Guide mechanism, display mechanism, movement and timepiece.

专利摘要:
A guide mechanism (130) rotates and guides a display wheel (90) having a plurality of internal teeth (92) and displays information about a C axis in a predetermined cycle, the mechanism comprising a rotational guide part (140) formed separately from a stage (11) and combined with the stage in a state that it is disposed radially inside the display wheel with respect to the internal teeth, the part rotating guide comprising a guide surface (141) located at the same height as that of the internal teeth in the direction of the thickness of the platen and the guide surface being a curved surface having a radius (R2) equal to or less to the radius of a rotational path of a tooth tip chosen from among the internal teeth centered on the axis and facing at least two internal teeth from the inside in the radial direction.
公开号:CH717215A2
申请号:CH00226/21
申请日:2021-03-02
公开日:2021-09-15
发明作者:koda Masayuki；Mori Yuichi；Suzuki Shigeo；Fujieda Hisashi
申请人:Seiko Watch Kk；
IPC主号:

专利说明:

BACKGROUND OF THE INVENTION
1. Field of the invention
The present invention relates to a guide mechanism, an information display mechanism, a movement and a timepiece.
2. Description of the state of the art
In the state of the art, timepieces provided with calendar mechanisms are known as a timepiece which displays information other than time.
In general, the calendar mechanisms are provided with a date indicator displaying the date, a date indicator drive wheel which rotates once in 24 hours and which rotates the date indicator d 'a step (a day) and an indexing element such as a date jumper which sets the date indicator in a suitable position. The date indicator is rotatably supported by the plate and includes internal teeth around the entire circumference of an internal peripheral edge. The date indicator drive wheel comprises a date finger capable of engaging the internal toothing of the date indicator and it is possible to advance the date of the date indicator by the date indicator. 'intermediary of the date finger.
[0004] Consequently, by the rotation of the date indicator drive wheel, the date can be indexed, via the rotation of the date indicator by one step, for example, when it reaches midnight.
[0005] Furthermore, in this type of calendar mechanism, the date indicator must be rotatably supported (guided) in a state in which it is positioned in the direction of the plane on the plate. As such, many date indicators are positioned in the plane direction by a date indicator guide portion formed integrally on the plate and are rotatably guided in many cases. In particular, the date indicator guide portion disposed inside the internal teeth of the date indicator in the radial direction, having a guide surface whose internal teeth are in contact with each other or close to each other. from each other, is formed integrally on the plate, for example by cutting in many cases.
[0006] Therefore, it is possible to position the date indicator in the direction of the plane using the guide surface of the guide portion of the date indicator and rotate and guide the date indicator. date indicator while making sliding contact with internal teeth along the guide surface.
[0007] However, from the point of view of machinability and the like, the turntable is made of a copper-based metallic material, such as brass in many cases. Therefore, the entire plate, including the guide part of the date indicator, has lower mechanical strength than, for example, stainless steel and drawbacks such as scratches or deformation of the date. guiding surface are likely to occur due to contact (sliding contact) of the internal teeth with the rotation of the date indicator. Therefore, deterioration in quality during long-term use is possible.
[0008] Therefore, for example, as described in JP-A-2004-144482 (Reference Patent 1), a calendar mechanism is known which uses a plurality of rolling elements rotatably supported by a turntable to positioning and guiding in rotation of a date indicator in the direction of the plane.
[0009] However, the calendar mechanism described in the reference patent 1necessary a plurality of rolling elements and furthermore requires a support element such as a pin to combine these rolling elements with the plate. Therefore, the number of parts is increased, cost reduction is difficult, and drawbacks such as decrease in serviceability exist. Further, the combination of the plurality of rolling elements with the platen must be done accurately, and achieving high-precision assembly is difficult due to factors such as variations in processing of rolling elements and errors in operation. Assembly. Consequently, the precision of the date indicator rotation guide is liable to decrease and therefore there are possibilities for improvement in terms of quality stability.
SUMMARY OF THE INVENTION
[0010] One aspect of the present application relates to a guide mechanism, an information display mechanism, a movement and a timepiece which can rotate and guide a display wheel stably and accurately. information for a long period of time and reducing the number of parts, reducing the cost and improving serviceability. (1) The present application relates to a guide mechanism rotating and guiding an annular display wheel having a plurality of internal teeth and displaying information about an axis in a predetermined cycle, the mechanism comprising a rotational guide portion. formed separately from a stage and combined with the stage in a state that it is disposed radially inside the display wheel with respect to the internal teeth, the rotational guide portion comprising a guide surface located at the same height as that of the internal teeth according to the direction of the thickness of the plate and the guide surface being a curved surface having a radius equal to or less than that corresponding to a rotational path of a tooth tip among the centered internal teeth on the axis and facing at least two or more internal teeth from the inside in the radial direction.
According to the guide mechanism according to the present application, the rotational guide portion combined with the plate is disposed radially inwardly with respect to the internal teeth and comprises the guide surface facing at least two internal teeth or more radially from the inside. In particular, the guide surface is formed so as to have a radius equal to or less than the radius of the rotational path of each tooth tip among the plurality of internal teeth and is located at the same height as that of the internal teeth in the direction. thickness of the plate. Therefore, at least two teeth of the internal toothing of the display wheel can be brought into contact with the guide surface and the display wheel can be positioned in the direction of the plane of the stage. Further, when the display wheel rotates around the axis in a predetermined cycle, the behavior such as clicking of the display wheel in the direction of the plane of the stage can be suppressed. Further, when the display wheel rotates, the internal teeth can be brought into sliding contact with the guide surface, so that the display wheel can be rotated and guided.
In particular, since the rotational guide part can be arranged separately from the plate, the rotational guide part can be designed without any restriction on the plate. Therefore, for example, the rotational guide part can be formed in view of the mechanical strength, hardness, sliding characteristics and the like, and the degree of freedom in the selectivity of the material can thus be improved. Therefore, the prevention of scuffing or deformation of the guide surface due to contact, impact and sliding contact with the internal teeth is possible and the deterioration of the guide part. rotating, including the guide surface, can be omitted. Therefore, the display wheel can be rotated and guided stably and precisely for a long period of time.
[0013] In addition, since the rotational guide part having the guide surface is simply combined with the plate, unlike the case of using a rolling element or the like in the state of the art, the number parts can be reduced, which leads to a reduction in cost and an improvement in serviceability. In addition, unlike rolling elements and the like in the prior art, the guide surface can be machined with high precision and any machining variation is unlikely to occur. (2) The rotating guide part can be made of a high hardness material having a hardness higher than that of the platen.
In this case, when the plate is made of a commonly used copper-based metal material, such as brass, the rotational guide part can be made of a material of high hardness, such as carbon steel , stainless steel or ceramic. Therefore, the whole of the rotating guide part, including the guide surface, can have greater hardness, and the resistance to frictional forces can be increased accordingly. Thus, the guide surface is unlikely to be scratched or deformed due to contact, impact, sliding contact and the like with the internal teeth and any deterioration of the rotating guide part, including the guide surface, can be further reduced further. (3) In the rotational guide part, a coating layer having a coefficient of friction lower than that of the platen can be formed on at least the guide surface.
In this case, at least the guide surface is coated with the coating layer having a coefficient of friction lower than that of the plate, so that the sliding characteristics of the guide surface can be improved. Therefore, prevention of scuffing or deformation of the guide surface due to contact, impact and sliding contact with the internal teeth is possible and the deterioration of the rotating guide part. , including the guide surface, can be omitted. (4) An auxiliary guide part on the stage can be used in a state where it is arranged so as to align along a circumferential direction of the display wheel with respect to the guide part in rotation, the auxiliary guide portion being able to include an auxiliary guide surface located at the same height as that of the internal teeth in the direction of the thickness of the platen and the auxiliary guide surface being able to be a curved surface formed so as to have a radius less than that of the radius of the guide surface centered on the axis and capable of facing the internal teeth from the inside in the radial direction.
In this case, although the auxiliary guide surface is located at the same height as that of the internal teeth in the thickness direction of the plate, the auxiliary guide surface has a radius smaller than that of the surface of guide in the rotating guide part. Therefore, when the internal teeth of the display wheel and the guide surface in the rotating guide part are in contact with each other, the internal teeth and the auxiliary guide surface may on the contrary not be brought. in mutual contact.
Conversely, in the event that the display wheel is excessively shaken by vibrations in the plane of the stage when the display wheel rotates, the display wheel may be unintentionally moved by such that the internal teeth are separated from the guide surface. However, since the auxiliary guide part is arranged so as to align in the circumferential direction with respect to the rotational guide part, the internal teeth can be brought into contact with the auxiliary guide surface and the displacement not. intentional display wheel described above can be regulated and limited. Further, since the internal teeth can be slidably contacted with the auxiliary guide surface, it is possible to rotate and guide the display wheel adequately.
[0018] In this way, through the use of the auxiliary guide part, it is possible to rotate and guide the display wheel adequately while suppressing any behavior such as excessive displacement of the wheel. display in the plane of the board. Further, even in the case where an unintentional external force acts on the display wheel, excessive displacement of the display wheel in the direction of the plane of the stage can be prevented by using the part of the display. auxiliary guide, (5) The auxiliary guide part can be formed integrally with the plate.
[0019] In this case, for example, when the platen is formed into a predetermined shape by cutting or the like, since the auxiliary guide part can be formed simultaneously, the number of parts can be reduced which can contribute to a cost reduction or the like. (6) The rotating guide part may include a protruding piece projecting radially outwardly so as to overlap the internal teeth in the direction of the thickness of the platen and thereby lock the position of the display wheel in the direction of the thickness.
In this case, since the position of the display wheel in the thickness direction of the plate can be determined using the protruding part, for example, one can dispense with an element receiving wheel to hold the display wheel or its size may be reduced. Therefore, saving space is easy. (7) An information display mechanism according to the present application comprises the guide mechanism; the display wheel; a drive wheel comprising a finger capable of meshing with the internal teeth and of rotating the display wheel about the axis at a predetermined cycle; and an index member exerting a compressive force against the display wheel radially outwardly and determining a rotational adjustment position of the display wheel.
According to the information display mechanism according to the present application, for example, when a predetermined time is reached, the finger in the drive wheel engages with one of the internal teeth. Therefore, the energy can be transmitted to the display wheel through the finger when the driving wheel continues to rotate and the display wheel can be rotated around the axis in a predetermined cycle. . Further, since the display wheel receives the adjusting force from the index member outwardly in the radial direction, the display wheel is positioned in a state where the internal teeth are in contact. with the guide surface in the rotating guide part. Therefore, the display wheel is positioned in the plane of the stage and the rotational position is indexed. Therefore, when not rotating (in a stationary state), the display wheel can be stably positioned with less clicking, which can lead to smooth rotation of the display wheel. Therefore, the information can be displayed with high precision using the display wheel. (8) The rotational guide part can be arranged such that at least the guide surface is located radially on the side opposite to the indexing member, the axis being interposed between them.
In this case, when the display wheel is pushed outwards in the radial direction under the action of the indexing element, the internal teeth can be brought into contact with the guide surface of the guide portion rotated so as to be reliably compressed against the guide surface. Therefore, for example, the display wheel can be positioned while supporting the display wheel at multiple points and when it is not rotating (in a stationary state), the display wheel can be so positioned. stable with less rattling and vibration. (9) The display wheel may be a date indicator displaying a date as information.
[0023] In this case, since the guide mechanism described above can rotate and guide the date indicator stably and precisely for a long period of time, the date can be displayed accurately without being moved. compared to an aperture on the dial, for example. (10) A movement according to the present application includes the information display mechanism described above. (11) A timepiece according to the present application comprises the movement described above.
[0024] In this case, since the guide mechanism is used, the display wheel displaying the information can be rotated and guided stably and precisely for a long period of time and high-quality movement and high performance as well as a corresponding timepiece can be obtained.
According to the present application, the rotation and guiding of the display wheel displaying information for a long period of time in a stable and precise manner is possible, and the number of parts can be reduced, the cost can be reduced and ease of maintenance can be improved.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a view showing a first embodiment according to the present invention and is an external view of a timepiece. Figure 2 is a plan view of a movement shown in Figure 1, seen from the rear. Figure 3 is a plan view of the movement shown in Figure 2, without the adjusting wheel plate which has been removed. Fig. 4 is a vertical cross-sectional view of the movement along the line AA shown in Fig. 3. Fig. 5 is a vertical cross-sectional view of a periphery of an hour wheel shown in Fig. 3. Fig. 6 is a perspective view of the movement shown in Figure 3. Figure 7 is a plan view of a date indicator shown in Figure 3. Figure 8 is a plan view of a periphery of a drive wheel. date indicator shown in Figure 3. Figure 9 is a plan view of the date indicator drive wheel shown in Figure 8. Figure 10 is a plan view of the date indicator drive wheel. date indicator shown in FIG. 9, bottom view (case back side). Fig. 11 is a plan view of the date indicator drive wheel shown in a state in which the spring cover is removed from the state shown in Fig. 10. Fig. 12 is a vertical cross-sectional view of the date indicator drive wheel along line BB shown in Fig. 10. Fig. 13 is a perspective view showing a state in which the date indicator guide plate is removed from the state shown. in Fig. 6. Fig. 14 is a perspective view of the date indicator guide plate shown in Fig. 6. Fig. 15 is a plan view showing a state in which the date indicator drive wheel rotates counterclockwise from a state shown in Fig. 8, and an engagement between the date indicator drive wheel and a date indicator regulator spring is released é. Fig. 16 is a plan view showing a state in which the date indicator is momentarily rotated counterclockwise by the date indicator drive wheel from a state shown in FIG. Fig. 15. Fig. 17 is a perspective view showing an example of modification of the date indicator shown in Fig. 14. Fig. 18 is a plan view of a movement showing a second embodiment of the present invention. Fig. 19 is a plan view of a movement showing a third embodiment of the present invention. Figure 20 is a vertical cross-sectional view of movement along line C-C shown in Figure 19.
DESCRIPTION OF EMBODIMENTS
(First embodiment)
A first embodiment according to the invention is described below, with reference to the drawings.
In the present embodiment, as an example of a timepiece, a mechanical timepiece having a direct gear structure of a seconds hand with three central hands in which an hour hand, a hand minutes and a seconds hand are arranged in the center of a movement is described by way of example. In each drawing of the present embodiment, in order to make the drawing easier to view, part of the components of the timepiece can be omitted and each part of the timepiece can be shown in a simplified manner.
Normally, a mechanical body comprising a drive part of the timepiece is called a "movement". The state in which a dial and hands are attached to this movement and placed in a timepiece case to produce a finished product is called the “complete movement” of the timepiece. Among the two sides of a plate constituting a timepiece board, the side of the timepiece case on which a crystal is placed (i.e. the side on which the dial is located) is called the “back” of the movement. In addition, among the two sides of the plate, a side of the timepiece case where a back is located (ie a side opposite the dial) is called the “front side” of the movement.
In the present embodiment, a direction from the bottom side (front side) to the dial is described as the upper side and a side opposite to it is described as the lower side. Therefore, a plate thickness direction is a vertical direction.
As shown in Figure 1, a complete timepiece 1du present embodiment is provided with a movement 10, a dial 4 having at least one scale indicating time information, hands comprising an hour hand 5 indicating the hour, a minute hand 6 indicating the minutes and a seconds hand 7 indicating the seconds, in a case 3 of a timepiece comprising a back (not shown) and a crystal 2.
The dial 4 is provided with an opening, that is to say a window 8 to clearly indicate a date value 91 displayed on a date indicator 90 described later. Therefore, the date can be checked in addition to the current time.
As illustrated in Figures 2 to 4, the movement 10 includes a plate 11 constituting the main plate of the movement 10.
At least one rear cog 12 comprising a roadway 40, a minute wheel 60 and an hour wheel 50, a calendar mechanism (information display mechanism according to the present invention) 13 and a date correction mechanism 14 are arranged at the rear (i.e. the top side) of the plate 11. The rear gear 12 is pivotally supported between a plate of the adjusting wheel 15 disposed at the rear of the plate 11 and the plate 11.
The wafer of the adjusting wheel 15est disposed in a date indicator 90 described later. In addition, a dial 4 is visibly disposed at the rear of the plate of the adjusting wheel 15 through the glass 2.
As shown in Figure 5, at least one finishing gear 16, an exhaust 17 which controls the rotation of the finishing gear 16 and a regulator (not shown) which controls the speed of the exhaust 17 are arranged at the front (i.e. the lower side) of plate 11.
(Finishing gear and rear gear)
The finishing gear 16 is arranged between the gear train bridge 18 disposed at the front of the plate 11 and the plate 11, rotates under the impulse of an output torque generated by the disarming of a barrel spring (no shown) and plays a role in the movement of the hour hand 5, the minute hand 6 and the seconds hand 7. The finishing gear 16 is mainly provided with a movement barrel to accommodate the spring. barrel, a central gear wheel, a third gear wheel 20 and a second gear wheel 30. In each drawing, the movement barrel and the central gear wheel are not shown.
The movement barrel can rotate under the action of an elastic return force (power) which accompanies the disarming, that is to say the unwinding of the barrel spring in its drum. The barrel spring is wound up via a winding rod 19 shown in FIG. 1.
The winding stem 19 is rotatably incorporated in a winding stem guide hole (not shown) formed in the plate 11. A crown 19a shown in Figure 1 is connected to the winding stem 19. Therefore, the crown 19a allows the winding stem 19 to be turned.
The position of the winding stem 19 according to the axial direction is determined by an adjusting wheel device (not shown) having an adjusting lever, a rocker, a rocker spring and the like. A winding pinion (not shown) rotatable relative to the winding stem 19 and stationary in the axial direction is fixed to a guide stem of the winding stem 19. A clutch wheel (not shown) not rotating with respect to the winding stem 19and movable in the axial direction is fixed to a part of the winding stem 19 located at the distal end of the winding pinion.
[0041] For example, when the winding stem 19 is put in the winding stem position (zero level) closest to the movement 10 in the axial direction, the winding pinion and the clutch wheel can engage the one in the other. Consequently, by the rotation of the winding stem 19 via the crown 19a in this state, it is possible to rotate the winding pinion around the axis coaxial with the winding stem 19 via the clutch wheel. By rotating the winding pinion, the barrel spring can be wound up via the ratchet wheel (not shown).
When the winding stem 19 rotates while it is at level one, for example, that is to say in a state withdrawn by one notch, the date can then be corrected. And when the winding stem 19 turns in a state withdrawn by two notches, it is the time which can be corrected. This will be described later.
The central gear mobile is said to be rotary via the rotation of the movement barrel which is driven in rotation under the impulse of the energy generated by the unwinding of the barrel spring. The central gear mobile is provided with a central pinion whose energy is transmitted from the movement barrel and with a central wheel which meshes with a third pinion 21 described later.
As shown in Figure 5, the third mobile gear 20 is pivotally supported by a stone stopper such as a hollow stopper whose lower tenon is held by the gear bridge 18, is pivotally supported by the stone stopper such as a hollow stopper whose upper tenon is held by the plate 11et can rotate about a first axis O1. The third mobile gear 20 is provided with a third pinion 21 which meshes with the central wheel and with a third wheel 22 which meshes with the second pinion 32 described later. Therefore, the third mobile gear 20 can rotate about the first axis 01 in synchronization with the rotation of the central gear mobile.
The second mobile gear 30 is arranged coaxially with respect to the central axis (axis according to the present invention) C of the plate 11 in a state disposed in a cylindrical part 25 held by the plate 11 and is rotatable about the axis central C.
The second mobile gear 30 comprises a shaft 31, a second pinion 32with which the third wheel 22 engages and a second wheel 33. The shaft 31est rotatably supported by the stone plug located in the cylindrical part 25. In the Example shown, the shaft 31est rotatably supported by two crimped plugs arranged at a distance in the vertical direction. The lower tenon of the shaft 31 is pivotally supported by the stone plug such as a hollow plug held by the gear bridge 18.
Consequently, the second mobile gear 30 can rotate around the central axis C in synchronization with the rotation of the third mobile gear 20.
The upper end of the shaft 31 protrudes upwards beyond the dial 4 and also projects upwards beyond the roadway 40 and the hour wheel 50. The seconds hand 7 is set at the upper end of the shaft 31. Consequently, it is a direct drive system in which the seconds hand 7 is moved directly by the rotation of the second mobile gear 30. The second hand seconds 7 rotates at a speed of rotation adjusted by the exhaust 17 and by the regulator, that is to say one rotation per minute.
The roadway 40 constituting the rear gear 12is arranged coaxially with the central axis C at the rear (upper side) of the plate 11 and can rotate around the central axis C. The roadway 40 includes a tubular main body 41 of the roadway which surrounds the cylindrical part 25, a wheel gear 42 which is combined with the lower end of the main body 41 of the roadway and which meshes with the third pinion 21 and a wheel gear 43 formed in a part of the main body 41 of the roadway located between the wheel gear 42 and the hour wheel 50. Consequently, the roadway 40 can rotate around the central axis C with the rotation of the third mobile gear 20.
In particular, in the roadway 40, the main body 41de roadway is arranged inside the main body 51de the hour wheel described later, the wheel pinion 43 straddling the hours gear mobile 52décrit later. Therefore, the roadway 40 is positioned in the vertical direction by the hour wheel 50, and can stably rotate around the central axis C while being guided by the hour wheel 50.
The pavement main body 41 and the wheel gear 42 are combined in a state in which a predetermined pressure contact force (frictional force) is maintained. Therefore, when a relative rotational force exceeding the pressing contact force (frictional force) acts between the road main body 41 and the wheel gear 42, for example at time of time setting, The wheel gear 42 can slide relative to the main body 41 of the roadway.
The upper end of the main body 41de roadway protrudes upwards from the hour wheel 50 and is disposed under the upper end of the shaft 31 of the second mobile gear 30. A minute hand 6 is fixed at the upper end of the main body 41de roadway. Therefore, the minute hand 6 is located closer to the dial 4 than the seconds hand 7 attached to the second mobile gear 30. Therefore, the minute hand 6 can be moved directly by the rotation of the carriageway 40. L The minute hand 6 rotates at a speed of rotation adjusted by the escapement 17 and by the regulator, that is to say one rotation per hour.
The hour wheel 50 constituting the rear wheel 12 is arranged coaxially with the central axis C at the rear (upper side) of the plate 11 and can rotate around the central axis C. The hour wheel 50 is provided with a cylindrical main body 51 of the hour wheel which surrounds the main body 41 of the roadway and of a mobile hour gear 52 which is integrally formed at the lower end of the main body 51 of the hour wheel and which meshes with a 61 minute pinion described later.
As shown in Figures 3 and 4, the minutes wheel 60 is pivotally supported by a stone stopper such as a hollow stopper whose lower tenon is held by the plate 11, is pivotally supported by the stone stopper such as a hollow stopper, the upper tenon of which is held by the plate of the adjusting wheel 15 and can rotate about a second axis 02. The minute wheel 60 is provided with a minute pinion 61 with which the gear mobile hours 52 meshes and a minute gear mobile 62 which meshes with the wheel pinion 43 of the roadway 40. Consequently, the minute wheel 60 meshes with both the roadway 40 and the hours wheel 50.
[0055] Therefore, the hour wheel 50 can rotate about the central axis C in synchronization with the rotation of the carriageway 40 and the minute wheel 60. In addition, the upper end of the main body 51 of the hour wheel is made. projecting upward from the dial 4et is disposed below the upper end of the main body 41de roadway. The hour hand 5 is attached to the upper end of the hour wheel main body 51.
[0056] Therefore, the hour hand 5 is located closer to the dial 4 than the minute hand 6 fixed to the carriageway 40. Therefore, the hour hand 5 can be moved directly by the rotation of the hour wheel 50. The hour hand 5 rotates at a speed of rotation adjusted by the escapement 17 and by the regulating member, that is to say one rotation per 12 hours.
(Exhaust and regulator)
As shown in Figure 5, the exhaust 17 is provided with an exhaust gear mobile 80 which rotates around the fourth axis 04 in synchronization with the rotation of the second gear mobile 30 and a fork (not shown ) which lets escape the escape gear mobile 80, which rotates the exhaust gear mobile 80 regularly and which controls the finishing gear 16 by a regular oscillation of a balance (not shown).
In the present embodiment, an example is chosen in which an intermediate exhaust gear mobile 70 which rotates about the third axis 03 is disposed between the exhaust gear mobile 80 and the second gear mobile 30 and the rotational force of the second gear mobile 30 is transmitted to the exhaust gear mobile 80 via the exhaust intermediate gear mobile 70.
However, since the intermediate exhaust gear mobile 70 mainly plays a role of adjusting the speed increase ratio of the finishing gear 16, the intermediate exhaust gear mobile 70 is not essential as an exhaust 17 and may not be present. In this case, for example, the second gear mobile 30 and the escape gear mobile 80 can be arranged so as to mesh directly with one another. Further, a plurality of escape intermediate gear wheels including the exhaust intermediate gear wheel set 70 are disposed between the escape gear wheel unit 80 and the second gear wheel unit 30 and the rotational force of the second wheel unit. gear 30 may be transmitted to the exhaust gear mobile 80 via the plurality of exhaust intermediate gear wheels.
The intermediate exhaust gear mobile 70 is pivotally supported by a stone stopper such as a hollow stopper whose lower tenon is held by the gear bridge 18, is pivotally supported by the stone stopper such as that a hollow plug, the upper tenon of which is held by the plate 11 and can rotate about a third axis 03. The intermediate exhaust gear mobile 70 is provided with an exhaust intermediate pinion 71 with which the second wheel 33 meshes and an escape intermediate gear wheel 72. Therefore, the escape intermediate gear mobile 70 can rotate about the third axis 03 in synchronization with the rotation of the second gear mobile 30.
The exhaust gear mobile 80 is pivotally supported by a stone stopper such as a hollow stopper, the lower tenon of which is held by the exhaust gear train bridge 85, is pivotally supported by the stopper stone such as a hollow stopper, the upper tenon of which is held by the plate 11 and can rotate about a fourth axis 04. The escape gear mobile 80 is provided with an escape pinion 81 with which the escape wheel escape intermediate gear 72 engages and an escape wheel 82 having a plurality of escape teeth. The fork includes a first pallet and a last pallet which can be uncoupled from the exhaust tooth.
The regulator member is provided with a balance which mainly uses a spring in the form of a spiral (also simply called a spiral spring, not shown) as a source of energy and which is driven by a back and forth movement. - comes (forward and backward rotation) with a constant amplitude (amplitude) according to the output torque of the barrel spring.
The rotation of the finishing gear 16 and the rear gear 12 can be controlled by the exhaust 17 and the regulating member designed as described above and, as described above, the seconds hand 7, the hand of minutes 6 and hour hand 5 can be moved adequately to maintain an accurate time.
(Calendar mechanism)
As illustrated in Figures 3 and 6, the calendar mechanism 13est disposed at the rear (upper side) of the plate 11.
The calendar mechanism 13 is provided with a date indicator (display wheel according to the present invention) 90, with a date indicator drive wheel (drive wheel according to the present invention) 100 which is rotatably disposed about the fifth axis 05 and which rotates (advance by date indexing) the date indicator 90 around the central axis C according to a predetermined cycle, of a date indicator gear 110 to rotate the date indicator drive wheel 100 with the rotation of the hour wheel 50, a date jumper (indexing element) 120 which adjusts the rotational position of the date indicator 90 and of a guide mechanism 130 which guides the rotation of the date indicator 90 around the central axis C.
The date indicator 90 is an annular element rotatably arranged on the upper surface of the plate 11 and the date values (information relating to the date) 91 representing days 1 to 31 are clearly indicated in order on the upper surface according to the circumferential direction. A method for clearly indicating the date 91 includes, for example, printing, engraving, affixing a label and the like and is not particularly limited.
The date indicator 90 can rotate in the opposite direction to the direction of clockwise (simply designated in the following as a counterclockwise direction), materialized by the arrow K1 shown in FIG. 3 seen from above (dial side 4) . Therefore, the date can be advanced by rotating the date indicator 90 counterclockwise. The direction of rotation opposite to the direction of rotation of the date indicator 90 is called clockwise (hereinafter simply referred to as clockwise).
However, the direction of rotation of the date indicator 90 is not limited to the above case and, for example, the date indicator 90 can be designed to rotate clockwise to achieve the advancement of date.
A plurality of internal teeth 92 are formed on an internal peripheral edge of the date indicator 90 at identical intervals along the circumferential direction over the entire circumference. The number of internal teeth 92 is 31 teeth. Consequently, via the rotation of the date indicator 90 of one tooth among the internal teeth 92, it is possible to carry out the date advancement of the date 91 displayed through the window 8, according to an indexation of one day at a time.
[0070] However, the number of internal teeth 92 is not limited to 31units and can be changed as needed, for example 62 teeth. In this case, the amount of rotation of the date indicator 90 to correspond to a day can be suitably changed depending on the number of internal teeth 92.
As shown in Figure 6, the inner peripheral edge of the date indicator 90 has a stepped shape so as to be located more on the side of the plate 11 than the other part of the date indicator 90. Consequently , the plurality of internal teeth 92 are located a little closer to the plate 11 than the other part of the date indicator 90.
In addition, each internal tooth 92 is provided with a first inclined surface 92a facing the counterclockwise direction, which is the direction of rotation of the date indicator 90, and with a second inclined surface 92b facing the direction. clockwise, the assembly constituting a triangular tooth which protrudes inwardly in the radial direction.
As shown in Figure 7, the date indicator 90 designed as described above is superimposed on the plate 11 being centered on the central axis C of the plate 11 in the step before the application of a pushing force by the date jumper 120 described later. Therefore, the rotational path M of the tips of the plurality of internal teeth 92 drawn by the rotation of the date indicator 90 around the central axis C is a virtual circle having a radius R1 centered on the central axis C. On the central axis C. FIG. 7, the date 91 is not shown.
In the present embodiment, the calendar mechanism 13 is designed so that the rotation of the date indicator 90 is started by the date indicator drive wheel 100 at a predetermined time (for example around of midnight) and the date indicator 90 rotates instantly in one-day indexing steps, that is to say of one tooth among the internal teeth 92, after a certain period of time for example.
As illustrated in Figures 3 and 6, the date indicator drive wheel 100 can rotate around the fifth axis 05 on the basis of the energy (rotational driving force) of the hour wheel 50 transmitted via the gear 110 for the date indicator. In particular, the date indicator drive wheel 100 rotates counterclockwise while being centered on the fifth axis 05, as represented by the arrow K2 shown in FIG. 3, and is designed to perform one rotation in 24 hours via deceleration. determined by the gear ratios provided by the date indicator gear 110.
As shown in Figures 6 and 8, the date indicator drive wheel 100 comprises a date indicator gear mobile 200 which rotates once counterclockwise around the fifth axis 05 in 24 hours in synchronization with the rotation of the hour wheel 50, a date finger unit 210 which is rotatably mounted about the fifth axis 05 with respect to the date indicator gear mobile 200 and a date indicator actuating spring 220 which applies a torque between the date indicator gear mobile 200 and the date finger unit 210 (see FIG. 10).
In the following description, the direction in which the date indicator drive wheel 100 rotates during a normal needle movement of the movement 10, that is to say the counterclockwise direction, can be called direction forward rotation.
As illustrated in FIGS. 8 to 11, the date indicator gear mobile 200 is provided with a main gear mobile body 201 which meshes with a second intermediate calendar gear mobile 116 (cf. Figure 4) described later and of a first elastic pin 202A, a second elastic pin 202B and a release pin 203de regulating, projecting downward (bottom side) from the main body 201de gear movable.
Figures 8 and 9 are plan views of the date indicator drive wheel 100 seen from above (dial side) and Figures 10 and 11 are plan views of the date indicator drive wheel 100 view from below (bottom side). The gear movable main body 201 is rotatably disposed about the fifth axis 05, and a through hole through which a date axis 230 described later is inserted is formed in the corresponding central part.
As illustrated in Figures 10 and 11, the first elastic pin 202A and the second elastic pin 202B are supported by the main body 201de gear mobile respectively in eccentric positions relative to the fifth axis 05. The first elastic pin 202A and the second spring pin 202B are disposed side by side in the circumferential direction about the fifth axis 05. The first spring pin 202A is located in the forward direction of rotation relative to the second spring pin 202B.
In Figures 10 and 11, given that the date indicator drive wheel 100 is seen from below (bottom side), the direction of rotation towards the front of the date indicator drive wheel 100 date is opposite to that of Figures 8 and 9.
[0082] Further, in the present embodiment, since the first elastic pin 202A and the second elastic pin 202B are formed identically, when one of the first elastic pin 202A and the second elastic pin 202B n 'is not specified, it is simply referred to as a spring pin 202.
The elastic pin 202 is formed so as to have a circular cross section. The spring pin 202 is provided with a cylindrical portion 205 protruding downward from the gear movable main body 201 and an edge 206 protruding outwardly in the radial direction of the cylindrical portion 205 from the lower end of the gear. the cylindrical part 205. The edge 206 is located under the lower surface of the gear movable main body 201 at a distance from the lower surface.
203de regulation release pin is disposed at a distance in the direction of forward rotation relative to the first elastic pin 202A and the second elastic pin 202B. As shown in Fig. 12, the regulating release pin 203 is provided with a rod 207 fixed to the gear movable main body 201 and a flange 208 protruding outwardly in the radial direction of the rod 207 from. an intermediate part of the rod 207dans the vertical direction. The upper end of the rod 207 is driven into a through hole formed in the main gear movable body 201.
The flange 208 is located under the lower surface of the main body 201de gear movable at a distance from the lower surface and is disposed so as to avoid interference with a date indicator actuating spring 220d described later.
As illustrated in Figures 9 and 12, the date finger unit 210 is provided with a date axis 230, a date finger 240, a spring 250 of the date finger, a cover 260 of finger and a spring cover.
As shown in Figure 12, the date axis 230 is provided with a central tube 231 disposed coaxially with the fifth axis 05 and a finger seat 232 projecting from the central tube 231.
The central tube 231 is inserted into the through hole of the main body 201de gear movable so as to be relatively rotatable about the fifth axis 05 and protrudes from the main body 201de gear movable on both the upper side and the side. lower side. The finger seat 232 is disposed to overlap the upper surface of the gear movable main body 201. The finger seat 232 has an annular shape which protrudes outwardly from the central tube 231 in the radial direction and extends around the entire circumference in the circumferential direction.
As shown in Figure 9, the date finger 240 is arranged to overlap the finger seat 232 in a plan view and is arranged along the outer peripheral edge of the finger seat 232. The date finger 240 is rotatably supported by the finger seat 232 at an intermediate portion in the circumferential direction about the fifth axis 05. In particular, the date finger 240 is rotatably supported by the support shaft which forms. protruding upward from the finger seat 232.
The date finger 240 is provided with a main body 241de finger extending in the forward direction of rotation (counterclockwise) from the center of rotation of the support shaft and an arm 242s' extending in the opposite direction to the direction of rotation forward (clockwise) from the center of rotation.
The arm 242 is formed so as to be in contact with the outer peripheral surface of the central tube 231 of the date axis 230. The tip of the main body 241de finger is formed so as to protrude outward in the direction radial from the finger seat 232 in a plan view. The finger main body 241 is provided with an engaging surface 241a facing the forward direction of rotation.
The main finger body 241 is disposed in a position where the engagement surface 241a can contact the second inclined surface 92b of the internal teeth 92 of the date indicator 90 when the date finger unit 210 rotates in the forward direction of rotation (see figure 6).
The finger main body 241 can be moved inwardly in the radial direction centered on the center of rotation of the support shaft by contacting the first inclined surface 92a of the internal teeth 92 of the date indicator 90 when the date finger unit 210 rotates in the opposite direction to the forward direction of rotation (clockwise).
The date finger spring 250 is arranged so as to overlap the finger seat 232 in a plan view and pushes the date finger 240. The date finger spring 250 is provided with a base 251 fixed to the finger seat 232, a main spring body 252 extending from the base 251 in the forward direction of rotation of the date indicator drive wheel 100 and being in contact with the arm 242 of the date finger 240.
The base 251 is supported by a support shaft which projects upwardly from the finger seat 232. The main spring body 252 is in contact with the arm 242 of the date finger 240 from the outside in the radial direction and compress the arm 242 towards the inside in the radial direction by means of an elastic restoring force. Therefore, the date finger 240 is pushed in the direction that the arm 242 is brought into contact with the outer peripheral surface of the central tube 231 of the date axis 230. That is to say, the date finger 240 is pushed in. a direction in which the tip of the finger main body 241 projects outward in the radial direction from the finger seat 232 in plan view.
As illustrated in Figures 9 and 12, the finger cover 260 limits the upward movement of the date finger 240 and the spring 250 of the date finger. The finger cover 260 is disposed on the side opposite to the finger seat 232, the date finger 240 and the date finger spring 250 being interposed between them. The finger cover 260 has a disc shape having substantially the same diameter as the outer diameter of the finger seat 232 and is disposed coaxially with the finger seat 232.
At the center of the finger cover 260 is formed a through hole in which the upper end of the central tube 231 of the date axis 230est adjusted. Therefore, the finger cover 260 is integrally combined with the date axis 230.
The finger cover 260 has through holes to avoid interference with each of the support shafts which support the date finger 240 and the date finger spring 250.
As illustrated in Figures 10 and 12, the spring cover 270de is arranged coaxially with the fifth axis 05 under the main body 201de gear mobile of the date indicator gear mobile 200 and maintains the actuating spring Date indicator 220 between the spring cover 270 and the main body 201de movable gear. The spring cover 270 has a disc shape having a diameter smaller than that of the gear movable main body 201 and is formed with a through hole at the corresponding center in which the lower end of the central tube 231 of the date axis 230 is. adjusted. Therefore, the spring cover 270 is combined with the date axis 230 to form a single piece.
[0100] The spring cover 270de has a pin guide hole 271de and an engaging portion 272du regulator spring.
[0101] The lower end of the rod 207de the release pin 203de regulating the movable date indicator gear 200d'is inserted into the guide hole 271de pin. The pin guide hole 271 extends in an arcuate form centered on the fifth axis 05 so as to allow movement of the regulating release pin 203 about the fifth axis 05. The pin guide hole 271 is provided with a movement. first peripheral end 271a located in the forward direction of rotation and a second peripheral end 271b located in the direction opposite to the forward direction of rotation of the date indicator drive wheel 100. The lower end of the rod 207 of the regulating release pin 203 is located at the second peripheral end 271b of the guide hole 271 of the pin.
[0102] The engaging portion 272 of the regulating spring is a notch formed on the outer peripheral surface of the spring cover 270 and is formed near the first peripheral end 271a of the guide hole 271 of the pin. The engagement portion 272 of the regulator spring is provided with a resilient engagement surface 272a facing the forward direction of rotation of the date indicator drive wheel 100. The resilient engagement surface 272a is located in a position overlapping the flange 208 of the regulating release pin 203 in a plan view, in a state in which the lower end of the rod 207 of the regulating release pin 203 is located at the bottom. level with the first peripheral end 271a of the pin guide hole 271 (see Figure 15).
[0103] As illustrated in FIGS. 10 to 12, the date indicator actuating spring 220 is arranged between the main body 201de gear mobile of the date indicator gear mobile 200 and the spring cover 270 of the date indicator. date finger unit 210.
[0104] The date indicator actuating spring 220 is a spiral spring made of a metal such as iron or nickel or of a non-metal such as silicon. The date indicator actuating spring 220 is wound by the relative rotation of an outer end and an inner end and by winding these parts so as to reduce the diameter. The coiled date indicator actuating spring 220 deforms elastically to generate torque between the outer end and the inner end.
In the following description of the date indicator actuating spring 220, unless otherwise indicated, it is assumed that the amount of winding of the date indicator actuating spring 220 is the smallest among all the states of the date indicator. date indicator drive wheel 100 when the movement 10 operates.
[0106] The date indicator actuating spring 220 is provided with a main spring body 221 having a spiral shape, an elastic fastening part 222 located at the inner end and a part of the spring. elastic engagement located at the outer end. The main spring body 221 has a spiral shape extending along an Archimedean curve centered on the fifth axis 05, for example in a plan view. The spring main body 221 extends in the forward direction of rotation from the elastic attachment portion 222 to the elastic engagement portion 223.
[0107] The elastic attachment portion 222 is integrally formed with the inner end of the main spring body 221, has an annular shape and is disposed coaxially with the fifth axis 05. The elastic attachment portion 222 extends towards the central tube 231 of the date axis 230 and is combined integrally with the date axis 230.
[0108] The elastic engagement portion 223 is molded interlocking with the outer end of the main spring body 221. The elastic engagement portion 223 is disposed outwardly in the radial direction from the outer peripheral portion of the spring main body 221 and at a distance in the circumferential direction from the release pin 203de regulator. The elastic engagement portion 223 extends from the outer end of the spring main body 221 in the forward direction of rotation.
[0109] In addition, the elastic engagement portion 223 engages with the first elastic pin 202A and the second elastic pin 202B in the date indicator gear mobile 200d. Therefore, the movement of the elastic engagement portion 223 is limited in the direction opposite to the forward direction of rotation relative to the date indicator gear mobile 200.
[0110] The elastic engagement portion 223 has a pair of through holes 224 into which the first elastic pin 202A and the second elastic pin 202B are inserted. These through holes 224 are provided with a narrow part 224a in which the cylindrical part 205 of the elastic pin 202 is located and with a wide part 224b connected to the narrow part 224a in the circumferential direction and having a wider shape in the radial direction than. the narrow part 224a.
[0111] The radial width of the narrow part 224a is identical to the external diameter of the cylindrical part 205de the elastic pin 202 and the cylindrical part 205 can be held. The wide portion 224b is wider than the spring pin 202 in a plan view and allows passage of the edge 206 of the spring pin 202 in the vertical direction.
[0112] Consequently, it is possible to engage the elastic pin 202 and the elastic engagement part 223 by sliding and to move the elastic pin 202 in the direction opposite to the direction of forward rotation relative to the mobile gear 200d. date indicator and to position the elastic pin 202 in the narrow part 224a, the elastic pin 202 being inserted in the wide part 224b of the through hole 224.
The date indicator actuating spring 220 is wound on itself following the displacement of the elastic engagement part 223 with respect to the elastic fixing part 222 in the direction of forward rotation of the wheel. The date indicator drive 100 and a torque is generated in the forward direction of rotation in the elastic fixing portion 222. Therefore, the date indicator operating spring 220 can urge the date finger unit 210 in the forward direction of rotation.
The date indicator drive wheel 100 designed as described above is positioned in the vertical direction of the plate 11 in a state in which it can rotate about the fifth axis 05 by combination of a support pin (not shown ) located on the plate 11 so as to be inserted into the central tube 231à a connecting screw 280, shown in Figure 6à the support pin, by screwing.
[0115] In addition, as shown in FIG. 8, a date indicator regulator spring 290 is fixed to the plate 11 so as to be adjacent to the date indicator drive wheel 100. In each figure other than Figure 8, the representation of the date indicator regulator spring 290 is omitted as necessary.
As illustrated in FIG. 8, the date indicator regulator spring 290 has the shape of a beam. In the date indicator regulator spring 290, a base end 291 is fixed to the plate 11 and a distal end 292 can be slidably contacted with the outer peripheral surface of the spring cover 270. The tip 292 of the date indicator regulator spring 290 faces the clockwise direction of rotation opposite to the direction of rotation of the date indicator 90 and of the date indicator drive wheel 100. Therefore, the distal end 292 of the date indicator regulator spring 290 can engage the resilient engagement surface 272a of the regulator spring engagement portion 272 in synchronization with the rotation of the indicator drive wheel 100. date.
[0117] In addition, the date indicator regulator spring 290 is arranged such that the flange 208 of the release pin 203 for regulating the date indicator gear mobile 200 can come into contact with the distal end 292 when the The distal end 292 is brought into engagement with the regulator spring engaging portion 272.
As illustrated in Figures 4 and 6, the date indicator gear 110 is provided with a first intermediate date wheel 111 which rotates around the sixth axis 06 on the basis of the rotation of the hour wheel 50 and a second intermediate date wheel 115 which rotates around the seventh axis 07 on the basis of the rotation of the first intermediate date wheel 111. This first intermediate date wheel 111 and the second intermediate date wheel 115 are arranged between the plate 11 and the plate of the control wheel. adjustment 15and are supported in a movable manner in rotation by the plate 11.
The first intermediate date wheel 111 is provided with a first intermediate date gear wheel 112 which meshes with the hour gear wheel 52 of the hour wheel 50. In addition, the second intermediate date wheel 115 is provided with a second intermediate date gear wheel 116 which meshes with the first intermediate date gear wheel 112 and with a second intermediate date pinion 117 which meshes with the indicator gear wheel 200. date of the date indicator drive wheel 100.
[0120] Therefore, each of the first intermediate date wheel 111 and the second intermediate date wheel 115 can be rotated with the rotation of the hour wheel 50 and, as described above, the indicator drive wheel 100. date can be rotated counterclockwise around the fifth axis 05.
[0121] Although the first intermediate date wheel 111 and the second intermediate date wheel 115 constitute the date indicator gear 110, the present invention is not limited to such a case and the number of intermediate wheels can for example be increased. or decreased. Furthermore, the date indicator gear 110 is not essential and may not be used. In this case, the positional relationship between the date indicator drive wheel 100 and the hour wheel 50 can be adjusted such that a date indicator gear wheel 101 engages directly with the hour wheel 50.
[0122] As illustrated in FIGS. 3, 6 and 8, the date jumper 120 is a part of a timepiece which discreetly fixes the position of rotation of the date indicator 90 and which assists the rotation of the date indicator. date 90 and which is rotatably combined with the support shaft arranged on the plate 11.
[0123] The date jumper 120 is provided with a base 121 in which an insertion hole is formed for the insertion of a support shaft, a date arm 122 which is connected to the base 121 and which has a free end at the level of the distal end and of an elastic part 124de date jumper connected to the base 121.
[0124] The elastic part 124 of the date jumper is for example a leaf spring in the form of a U in a plan view and is arranged under the date indicator 90. The distal end 124a of the elastic part 124 of the date jumper engages a protrusion formed on plate 11 (see Figure 3) and uses an elastic return force to urge the distal end of date arm 122 outward in the radial direction around the support shaft. Therefore, the distal end of the date arm 122 can be used to urge the date indicator 90 with a holding force outwardly in the radial direction.
[0125] At the distal end of the date arm 122 is formed a jumper control part 123 which regulates the rotational indexing position of the date indicator 90. As described above, since the distal end of the date arm 122 is pushed outward in the radial direction by the elastic date jumper part 124, the jumper control part 123 can be pressed on the date indicator side 90 and the jumper control part 123 can be pressed. engage the internal teeth 92 of the date indicator 90.
[0126] In particular, the jumper control part 123 is brought into engagement with the internal teeth 92 in a state in which it is inserted between the two internal teeth 92 adjacent to each other in the circumferential direction and pushes the indicator. date 90 outwards in the radial direction.
The jumper control part 123 is provided with a first engagement surface 123a facing counterclockwise, which is the direction of rotation of the date indicator 90, and with a second engagement surface 123b facing clockwise and has a triangular shape protruding outwardly in the radial direction. Therefore, the jumper control portion 123 can be inserted between the internal teeth 92, such that the second engagement surface 123b engages with the first inclined surface 92a of the internal tooth 92 with respect to the internal tooth 92 located within. clockwise to the jumper control portion 123 and the first engagement surface 123a engages the second inclined surface 92b or an apex of the internal tooth 92 relative to the internal tooth 92 located counterclockwise vis-à-vis the control part 123de jumper.
The position of rotation of the date indicator 90est set by the date jumper 120 configured in this way.
[0129] Moreover, when the date indicator 90 is gradually made to rotate in the counterclockwise direction of rotation by the date finger 103 described above, the date indicator 90 begins to rotate slightly in the counterclockwise direction of rotation. against the compressive force of the date jumper 120. Therefore, the internal teeth 92 in engagement with the second engagement surface 123b of the jumper control portion 123 move in the counterclockwise direction of rotation so as to slide on it. the second engagement surface 123b while elastically deforming the elastic part 124de date jumper so as to push the date arm 122 towards the inside in the radial direction. When the internal teeth 92 pass over the second engagement surface 123b of the jumper control part 123 under the action of an additional force of the date finger 103 and reach an apex part of the jumper control part 123, the control of the date jumper 120 is released.
[0130] Therefore, as described above, the date advancing and indexing mechanism of the date indicator 90 can be performed using the date finger 103. Further, since the part elastic 124 of the date jumper is biased and elastically deformed in association with the rotation of the date indicator 90, the date arm 122 can be biased and moved outward in the radial direction and the first engagement surface 123a of the control part 123de jumper comes to compress in an auxiliary manner the second inclined surface 92b of the internal teeth 92 in the counterclockwise direction of rotation. Therefore, the rotation of the date indicator 90 can be assisted.
[0131] Consequently, the date indicator 90 can be rotated in the counterclockwise direction only by one of the internal teeth 92, and the calendar advancement for one day can be performed. When the date indicator 90 rotates only from an internal tooth 92, the jumper control part 123 of the date arm 122 re-enters between the internal teeth 92 adjacent to each other in the circumferential direction so that the position of rotation of the date indicator 90 is again indexed.
(Guide mechanism)
[0132] As illustrated in FIGS. 3, 4, and 6, the guide mechanism 130 plays a role of guiding in rotation the date indicator 90 which rotates around the central axis C according to a predetermined cycle.
[0133] The guide mechanism 130 is provided with a guide plate (rotating guide part according to the present invention) 140 of date indicator formed separately from the plate 11 and combined with the plate 11 in a state in which it is disposed towards the interior in the radial direction with respect to the internal teeth 92 of the date indicator 90 and of an auxiliary guide part (auxiliary guide part according to the present invention) 150 of the date indicator located on the plate 11 in a state in which it is arranged so as to align itself along the circumferential direction of the date indicator 90 with respect to the date indicator guide plate 140.
[0134] As illustrated in FIG. 4, the date indicator guide plate 140 has the shape of a plate having a guide surface 141 located at the same height as that of the internal teeth 92 according to the vertical direction which the direction of the thickness. of the plate 11. In particular, as illustrated in FIG. 3, the guide surface 141 is a curved surface having a radius R2 equal to or less than the radius R1 (cf. FIG. 7) of the rotational path M of the tip of the internal teeth 92centred on the central axis C and is formed so as to face the inner teeth 92 of at least two or more teeth from the inside in the radial direction.
[0135] This will be described in detail.
[0136] As shown in FIG. 3, the date indicator guide plate 140 of the present embodiment extends in the circumferential direction over an angular sector of approximately 180 ° centered on the central axis C and is a plate in the form of a thin strip having an arc shape of a predetermined width in the radial direction.
The date indicator guide plate 140 is combined with the plate 11 so as to be located on the opposite side with respect to the date indicator drive wheel 100, of the date indicator gear 110, of the jumper. date 120 and the like in the radial direction, the central axis C being interposed between them when looking from the direction of the central axis C. At this time, as illustrated in Figures 6 and 13, the guide plate The date indicator 140 is combined with the plate 11 in a state in which it is embedded in a recess 160 provided in the plate 11.
[0138] The recess 160est formed so as to form a housing from the upper surface 11a located on the dial side 4de side of the plate 11et is formed so as to follow the external shape of the date indicator guide plate 140d. The recess 160 is formed so as to have dimensions slightly greater than that of the date indicator guide plate 140.
Since the date indicator guide plate 140 is housed in the recess 160, the date indicator guide plate 140 is combined with the plate 11 in a state in which it is positioned in the plane of the plate. 11. The thickness of the date indicator guide plate 140 is the same as the depth of the recess 160, and the date indicator guide plate 140 is designed so as not to protrude in height from the window. upper surface 11a of plate 11.
[0140] As illustrated in Figure 14, a locating hole 142 through which a locating pin 161 protruding upwardly from the bottom surface of the recess 160 is inserted, an insertion hole 143 through which a connecting screw 162 is inserted and an escape hole 144 to avoid interference with other parts of the timepiece are formed on one peripheral end and the other peripheral end of the date indicator guide plate 140.
[0141] As illustrated in FIG. 6, the date indicator guide plate 140 is housed in the recess 160, the positioning pin 161 being inserted into the positioning hole 142, and is assembled to the plate 11 by tightening the screw. connection 162 through the insertion hole 143.
[0142] As illustrated in FIGS. 3 and 6, the outer peripheral surface of the date indicator guide plate 140 is the guide surface 141 and faces the internal teeth 92 from the inside in the radial direction. In particular, since the date indicator guide plate 140 of the present embodiment extends in the circumferential direction over an angular sector of approximately 180 ° centered on the central axis C, the guide surface 141 faces to the internal teeth 92, which are approximately half of the plurality of internal teeth 92, from the inside in the radial direction.
[0143] Moreover, as described above, the date indicator 90 is pushed by the application of a holding force outward in the radial direction by the jumper control part 123 of the date jumper 120 of such that the date indicator 90 is slightly offset with respect to the date jumper 120 as a whole. Therefore, the internal teeth 92 located on the opposite side with respect to the date jumper 120 in the radial direction among the plurality of internal teeth 92 approach the guide surface 141 of the date indicator guide plate 140.
[0144] In this regard, as described above, the date indicator guide plate 140 is combined so that the guide surface 141 is located on the side opposite the date jumper 120 according to the radial direction, the axis central C being interposed between them, and the internal teeth 92 located on the side opposite the date jumper 120 in the radial direction can be brought into contact reliably with the guide surface 141.
[0145] In addition, part of the guide surface 141 of the date indicator guide plate 140 located on the side opposite the date jumper 120 in the radial direction is a side surface 145 formed so as to be slightly recessed according to the radial direction. In the example illustrated, the sidewall surface 145 is formed such that the length in the circumferential direction corresponds to three teeth among the internal teeth 92.
[0146] Consequently, as illustrated in FIGS. 3 and 6, in the stationary state of the date indicator 90 pushed by the date jumper 120, the two internal teeth 92 located on both sides in the circumferential direction with respect to the three teeth. internal 92 facing the flank surface 145 are in reliably contact with the guide surface 141 of the date indicator guide plate 140.
[0147] Consequently, the date indicator 90du this embodiment is positioned, relative to the plane of the plate 11, by four points constituted by two contact positions (P1, P2) between these two internal teeth 92 and the surface. guide 141 and by two engagement positions between the jumper control part 123 in the date jumper 120 and the internal teeth 92, that is to say an engagement position (P3) between the first engagement surface 123a of the jumper control part 123 and the internal teeth 92 and an engagement position (P4) between the second engagement surface 123b of the jumper control part 123 and the internal teeth 92. The positioning of the date indicator 90 by the above four points is continued as long as the date indicator 90 is in a stationary state.
[0148] In the case where the date indicator 90 is in a stationary state, the position of rotation (circumferential position of the date indicator 90) of the date indicator 90 is determined by two points, the position of engagement (P3) between the first engagement surface 123a of the jumper control part 123 and the internal teeth 92 and the engagement position (P4) between the second engagement surface 123b of the jumper control part 123 and the teeth internal 92.
[0149] As illustrated in FIGS. 3, 4 and 6, an auxiliary guide portion 150 of the date indicator is formed integrally with the plate 11 and is configured in the form of an arc having an auxiliary guide surface 151 located at the bottom. same height as the internal teeth 92 according to the vertical direction, which is the direction of the thickness of the plate 11.
[0150] In particular, the auxiliary guide surface 151 is a curved surface formed with a radius R3 less than the radius R2 of the guide surface 141 of the date indicator guide plate 140 centered on the central axis C and is formed so as to facing the internal teeth 92 from the inside in the radial direction.
[0151] This will be described in detail.
[0152] The date indicator auxiliary guide portion 150 of the present embodiment is integrally formed with the plate 11 by cutting or the like and is formed such that the length along the circumferential direction corresponds to two. teeth of the internal teeth 92. Therefore, the auxiliary guide surface 151 faces the two internal teeth 92 from the inside in the radial direction. The auxiliary date indicator guide portion 150 is formed on the plate 11 so as to be located between the date indicator drive wheel 100 and the date indicator guide plate 140 and to be located outwardly in the date indicator. the radial direction with respect to the date indicator gear train 110.
[0153] However, in the date indicator auxiliary guide portion 150, although the auxiliary guide surface 151 is located at the same height as that of the internal teeth 92 in the vertical direction, the auxiliary guide surface 151 is formed so as to have a radius R3 lower than that of the guide surface 141de the date indicator guide plate 140. Therefore, in the case where the internal teeth 92 of the date indicator 90 and the guide surface 141 are in contact with each other, that is, the date indicator 90 is in a stationary state, the internal teeth 92 and the auxiliary guide surface 151 can be brought into a non-contact state.
(Date correction mechanism)
As illustrated in FIGS. 3 and 6, the date correction mechanism 14 is disposed above the plate 11 and is disposed in a zone between the date indicator guide plate 140 and the rear wheel 12.
[0155] The date correction mechanism 14 is provided with an oscillating plate 170 which can oscillate around an axis of oscillation S according to the movement of the winding stem 19 in the axial direction, with a first intermediate minute wheel 171 mounted. rotating on the oscillating plate 170, a second intermediate minute wheel 172 rotatably mounted on the oscillating plate 170 and meshing with the first intermediate minute wheel 171, an intermediate date correction wheel 173 rotatably mounted between the plate 11 and the the adjusting wheel 15 and meshing with the second intermediate minute wheel 172 and a date correction adjusting wheel 174 rotatably mounted between the plate 11 and the plate of the adjusting wheel 15 and meshing with the intermediate date correction wheel 173.
[0156] The first intermediate minute wheel 171 and the second intermediate minute wheel 172 are combined with the oscillating plate 170 in a state in which they are constantly in mutual gear engagement. For example, when the winding stem 19 moves from the position corresponding to the level “0” described above to the position of level “2”, i.e. withdrawn two notches, the oscillating plate 170 oscillates. towards a position in which the first intermediate minute wheel 171 meshes with the minute gear mobile 62 of the minute wheel 60. When the winding stem 19 is in a position other than that corresponding to level two, the oscillating plate 170 can oscillate from so as to release the gear between the first intermediate minute wheel 171 and the minute gear wheel 62.
[0157] FIGS. 3 and 6 represent a case in which the gear between the first intermediate minute wheel 171 and the minute gear mobile 62 is released.
[0158] The second intermediate minute wheel 172 engages with an adjusting wheel (not shown). The adjusting wheel meshes with the clutch wheel when the winding rod 19 is in the level position „1“ withdrawn one step from the step position „0“ or in the upper level position „2“ .
[0159] Therefore, by the rotation of the winding stem 19 in the state in which it is withdrawn in the level position "2", the first intermediate minute wheel 171 can be rotated by means of the wheel. clutch, the adjusting wheel and the second intermediate minute wheel 172, thereby rotating the minute gear mobile 62. Therefore, the time can be corrected by the rotation of the carriageway 40 and the wheel. 50 hours which mesh with the 62 minutes gear mobile.
[0160] Further, by the rotation of the winding stem 19 in a state in which the winding stem 19 is withdrawn in the level position "1", the second intermediate minute wheel 172 can be rotated via the dial wheel. clutch and the adjusting wheel, whereupon the date correction adjusting wheel 174 can be rotated by means of the intermediate date correction wheel 173. The date correction adjusting wheel 174 has a date finger. which engages the second inclined surface 92b of the internal teeth 92 of the date indicator 90. Therefore, through the rotation of the date correction adjusting wheel 174, the internal teeth 92 can be caused to rotate. in the counterclockwise direction of rotation through the date finger and the date advancement of the date indicator 90 can thus be achieved. Therefore, the date can be corrected. When the date is corrected, the time is not corrected because the gear between the first intermediate minute wheel 171 and the minute gear mobile 62 is released.
[0161] Since the winding stem 19 is not located in the level position "2" during the normal movement of the hands, the gear between the first intermediate minute wheel 171 and the minute gear wheel 62 is released. and the gear between the adjusting wheel and the clutch wheel is also released. Therefore, even if the date correction adjusting wheel 174 is rotated by the internal teeth 92 of the date indicator 90, the complete date correction mechanism 14 is in an idle state so that the normal movement of the date indicator. needles is not influenced.
(Operation of the timepiece)
In what follows, the operation of the timepiece 1 produced as described above will be described.
[0163] According to the timepiece 1 of the present embodiment, the central gear mobile and the third gear mobile 20 can be rotated one after the other while the finishing gear 16 and the rear gear 12 are controlled. regularly rotating via the energy of the barrel spring. Therefore, the rotation of the third mobile gear 20 can rotate the second mobile 30 and the roadway 40 and the hour wheel 50 can be rotated via the minute wheel 60. Therefore, the seconds hand 7, 6 minute hand and 5 hour hand can be moved respectively.
[0164] Moreover, when the hour wheel 50 rotates, the rotational force can be transmitted to the date indicator drive wheel 100 via the date indicator gear 110 (the first intermediate date wheel 111 and the second intermediate date wheel 115). Therefore, as illustrated in Fig. 3, the date indicator gear mobile 200 can be rotated counterclockwise about the fifth axis 05 so as to complete one revolution once in 24 hours. Therefore, the date indicator drive wheel 100 rotates fully in the counterclockwise direction of rotation and the date finger 240 approaches the internal date indicator teeth 92 90.
[0165] At this time, the date indicator 90 is stationary in a state in which the rotational position is adequately positioned, via the engagement (P3) between the first engagement surface 123a of the part of the device. control 123 of jumper and the internal teeth 92, and the engagement (P4) between the second engagement surface 123b of the jumper control part 123 and the internal teeth 92 in the date jumper 120. In addition, the date indicator 90 is positioned, with respect to the direction of the plane of the plate 11, by a four-point contact constituted by two contact positions (P1, P2) between the two internal teeth 92 and the guide surface 141 in the guide plate 140 of the indicator date and by two engagement positions (P3, P4) between the jumper control part 123 in the date jumper 120 and the internal teeth 92.
[0166] Consequently, the date indicator 90is maintained in a stable state with little clicking and the date 91 can be recognized visually and clearly without, for example, the date 91ne being offset with respect to the window 8.
[0167] As the date indicator drive wheel 100 rotates further counterclockwise, as shown in Figure 15, the distal end 292 of the date indicator regulator spring 290 engages the engagement portion 272 of the date indicator. regulator spring in the date indicator drive wheel 100. Therefore, the rotation of the date finger unit 210 in the counterclockwise direction of rotation (forward direction of rotation) is regulated. Therefore, the date indicator gear mobile 200 continues to rotate in the counterclockwise direction of rotation relative to the date finger unit 210. Thus, the date indicator gear mobile 200 rotates while moving the rod 207 of the regulating release pin 203 in the counterclockwise direction of rotation from the vicinity of the second peripheral end 271b of the unit pin guide hole 271. 210 date finger. The date indicator gear mobile 200 rotates in the counterclockwise direction of rotation while winding up the date indicator actuating spring 220.
[0168] Consequently, the date indicator actuating spring 220 is armed, that is to say wound on itself, while increasing the torque which pushes the date finger unit 210 in the direction of counterclockwise rotation.
[0169] As illustrated in FIG. 16, the rod 207 of the regulating release pin 203 reaches the proximity of the first peripheral end 271a (cf. FIG. 10) of the guide hole 271 of the pin while the mobile gear 200d'indicator date continues to run. Therefore, the flange 208 of the regulator release pin 203 contacts the distal end 292 of the date indicator regulator spring 290 and presses the distal end 292 of the date indicator regulator spring 290 outward in the radial direction. .
[0170] Therefore, the mutual engagement between the date indicator regulator spring 290 and the regulator spring engaging portion 272 can be released. The date indicator drive wheel 100 is designed such that the engagement between the date indicator regulator spring 290 and the regulator spring engagement portion 272 is released around midnight, for example.
[0171] Therefore, around midnight, the date indicator actuating spring 220, which is cocked, can disarm at once, the elastic force stored in the date indicator actuating spring 220 can be disarmed. released at once and the date finger unit 210 can be rotated rapidly in the counterclockwise direction of rotation. Therefore, as shown in Fig. 16, the main body 241 of the date finger 240 can be moved rapidly in the counterclockwise direction of rotation, and the engagement surface 241a can be brought into contact with the second inclined surface 92b of the internal teeth 92 in it. The date indicator 90. Therefore, the date indicator 90 can be instantly rotated while releasing the control of the jumper by the date jumper 120. Therefore, the date can be instantaneously indexed to perform the shift operation. calendar advance.
[0172] Moreover, at the time of the date advancement described above, the internal teeth 92 in mesh with the second engagement surface 123b of the jumper control part 123 in the date jumper 120 move in the direction of anti-clockwise rotation so as to slide on the second engagement surface 123b while elastically deforming the elastic part 124de date jumper so as to push the date arm 122 inwardly in the radial direction. The internal teeth 92 pass over the second engagement surface 123b of the jumper control part 123 with the momentary rotation of the date indicator 90 and reach the apex part of the jumper control part 123 as shown in Fig. 16.
[0173] Consequently, the date indicator 90 rotates by a single internal tooth 92 in the counterclockwise direction of rotation so that the date arm 122 can be recalled and moved by the elastic return force of the elastic part 124 of the jumper. date and the control part 123du jumper can again be inserted between the two internal teeth 92adjacent to each other in the circumferential direction. Therefore, as illustrated in Figures 3 and 6, the rotational position of the date indicator 90 can again be indexed.
[0174] Consequently, the date indicator 90 may be stationary in a state in which the rotational position of the date indicator 90 is indexed again, by the engagement (P3) between the first engagement surface 123a in the control part 123du jumper and the internal teeth 92 and the engagement (P4) between the second engagement surface 123b of the control part 123du jumper and the internal teeth 92in the date jumper 120.
[0175] In addition, the date indicator 90 can be stationary in a state in which it is positioned, in the plane of the plate 11, by the four-point contact constituted by two contact positions (P1, P2) between the two internal teeth 92 and the guide surface 141 in the date indicator guide plate 140 and by two engagements (P3, P4) between the jumper control part 123 in the date jumper 120 and the internal teeth 92.
[0176] In particular, the timepiece 1 of the present embodiment is provided with a guide mechanism 130 to guide the rotation of the date indicator 90 and the date indicator guide plate 140 on which the guide surface 141 facing the internal teeth 92 having at least two or more teeth from the inside in the radial direction is formed in combination with the plate 11. Further, the guide surface 141 is formed to have a radius R2 equal to or less than the radius R1 of the rotational path M of each tooth tip of the internal teeth 92 and is located at the same height as that of the internal teeth 92. Therefore, as described above, when the date indicator 90 is in a stationary state, at at least two internal teeth 92 can be brought into contact with the guide surface 141 and the date indicator 90 can be positioned in the plane of the plate 11.
[0177] In addition, when the date indicator 90 is driven in rotation (during the advance of the date), even if the date indicator 90 behaves as if the date indicator vibrates in the plane of the plate 11 , since the internal teeth 92 and the guide surface 141 can be brought into contact with each other, the behavior of the date indicator 90 can be suppressed. Further, when the date indicator 90 rotates, the internal teeth 92 can be brought into sliding contact with the guide surface 141, so that the date indicator 90 can be rotated and guided.
[0178] Even in the case where the advance of the date of the date indicator 90 is carried out, as shown in FIG. 16, given that the control part 123 of the jumper in the date jumper 120 and the internal teeth 92 are in contact. mutual, the date indicator 90 can be positioned in the plane of the plate 11 by a three-point contact between the contact position (P5) and two contact positions (P1, P2) between the two internal teeth 92 and the guide surface 141 in the date indicator guide plate 140.
[0179] In particular, as illustrated in FIGS. 3 and 6, given that the date indicator guide plate 140 can be formed separately from the plate 11, the date indicator guide plate 140 can be formed without restriction to the date. level of the stage 11. Therefore, for example, the date indicator guide plate 140 may be formed taking into account the mechanical strength, hardness, sliding characteristics and the like and the degree of freedom in the selectivity of the date. material can be improved. Therefore, the prevention of scuffing or deformation of the guide surface 141 due to contact, impact and sliding contact with the internal teeth 92 is possible and the deterioration of the guide plate. 140 date indicator comprising the guide surface 141 can be omitted. Therefore, the date indicator 90 can be rotated and guided stably and precisely for a long period of time.
[0180] In addition, given that the date indicator guide plate 140 having the guide surface 141 is simply combined with the plate 11, unlike the case of using a rolling element or the like in the state of the Technically, the number of parts can be reduced, which leads to a reduction in cost and an improvement in serviceability. In addition, unlike a rolling element or the like in the prior art, the guide surface 141 can be processed with high precision and machining variations and the like are unlikely to occur.
[0181] As described above, according to the guide mechanism 130 of the present embodiment, the rotation and guiding of the date indicator 90 for a long period of time in a stable and precise manner is possible, and the number of parts can be achieved. be reduced, the cost can be reduced and the serviceability can be improved.
[0182] Further, according to the calendar mechanism 13 of the present embodiment, since the guide mechanism 130 can rotate and guide the date indicator 90 stably and precisely for a long period of time, the date 91 can be rotated and guided. displayed with precision without being offset from the window 8 of the dial 4, for example. Therefore, according to the movement 10 and the timepiece 1 provided with the calendar mechanism 13, a high quality and high performance movement and timepiece can be obtained.
[0183] In particular, given that the date indicator guide plate 140 is arranged such that at least the guide surface 141 is located on the side opposite the date jumper 120 according to the radial direction, the central axis C being interposed between them, the date indicator guide plate 140 can be brought into contact with the guide surface 141 so as to reliably bear against the internal teeth 92 while the date indicator 90 is held in compression towards the end. outside in the radial direction by the holding force of the date jumper 120. Therefore, the date indicator 90 can be stably kept in an indexed and stationary state.
[0184] In addition, given that the guide surface 141 is positioned with precision within the functionally necessary range taking into account the position of the date jumper 120, various parts for the timepiece can be arranged without loss of space in other regions of the stage 11 and may contribute to the miniaturization and thinning of the movement 10.
[0185] Further, since the plate 11 of the timepiece 1 of the present embodiment is provided with an auxiliary guide portion 150 of the date indicator having an auxiliary guide surface 151, the following effects can be obtained. .
[0186] For example, in the case where the date indicator 90 generates excessive vibrations due to the latching in the plane of the plate 11, when the date indicator 90 rotates, the date indicator 90 can be moved unintentionally. such that the internal teeth 92 separate from the guide surface 141 of the date indicator guide plate 140. However, in this case, the internal teeth 92 can be brought into contact with the auxiliary guide surface 151, and the unintended movement of the date indicator 90 can thus be regulated. In addition, since the internal teeth 92 can be slidably contacted with the auxiliary guide surface 151, it is possible to rotate and guide the date indicator 90 adequately.
[0187] In this way, through the use of the auxiliary guide portion 150 of the date indicator, the date indicator 90 can be rotated and guided adequately while suppressing behavior such as excessive displacement of the date. date indicator 90 in the plane of the plate 11. Furthermore, for example, even in the case where an unintentional external force acts on the date indicator 90 following the impact of a fall, any excessive displacement of the date indicator 90 in the plane of the plate 11 can be prevented through the use of the auxiliary guide portion 150 of date indicator 90.
[0188] In addition, given that the date indicator auxiliary guide portion 150 is formed integrally with the plate 11, the date indicator auxiliary guide portion 150 can be produced simultaneously with the plate 11 in a predetermined shape or the like, for example by cutting. Therefore, the number of parts can be reduced and a contribution to further cost reduction and the like is possible.
[0189] However, the date indicator auxiliary guide portion 150 does not have to be formed immediately integrally with the plate 11, for example, the date indicator auxiliary guide portion 150 may be formed separately from the date indicator. plate 11 then combined with plate 11 so as not to form a single piece thereafter.
(Example of a variant of the first embodiment)
In the first embodiment, it is preferable that the date indicator guide plate 140 is made of a material of high hardness having a hardness greater than that of the plate 11.
[0191] For example, it is preferable that the plate 11 is made of a metal material based on copper commonly used, such as brass, and that the date indicator guide plate 140 is made of a material of high hardness, such as than carbon steel, stainless steel or ceramic. Therefore, the whole of the date indicator guide plate 140, including the guide surface 141, can be rigidly formed and the resistance to frictional forces can be improved. Therefore, the guide surface 141 is unlikely to be scratched or deformed due to contact, impact, sliding contact or the like with the internal teeth 92 and deterioration of the guide plate 140d '. date indicator comprising the guide surface 141 can be omitted.
[0192] Further, in the first embodiment, as shown in FIG. 17, a coating layer 180 having a coefficient of friction lower than that of the plate 11 can be formed on at least the guide surface 141 of the guide plate. 140 date indicator.
[0193] In particular, for example, the coating layer 180 may be made of a fluororesin (Teflon resin (registered trademark)) by performing a surface lubrication treatment such as a fluororesin coating, or the coating layer 180 may be. formed by carrying out a surface lubrication treatment such as a Teflon plating treatment (registered trademark).
[0194] Therefore, at least the guide surface 141 is coated with the coating layer 180 having a coefficient of friction lower than that of the plate 11, so that the sliding characteristics of the guide surface 141 can be improved. Therefore, it is possible to prevent scratching or deformation of the guide surface 141 due to contact, shock or sliding contact with the internal teeth 92, and deterioration of the brake pad. date indicator guide 140 comprising the guide surface 141 can be omitted. Although the coating layer 180 is formed on the guide surface 141 in Fig. 17, the entire date indicator guide plate 140 may be coated with the coating layer 180.
[0195] As described above, it is more preferable that the date indicator guide plate 140 itself is made of a material of high hardness, such as carbon steel, and that the entire plate date indicator guide 140 is Teflon-plated (registered trademark).
(Second embodiment)
[0196] In what follows, a second embodiment according to the invention will be described, with reference to the drawings. In the second embodiment, the same parts as the elements in the first embodiment are designated by the same reference number and the corresponding description will not be repeated in detail.
[0197] In the first embodiment, although a date indicator guide plate 140 extending along the circumferential direction is combined with the plate 11, in the second embodiment, a plurality of date indicator plates. date indicator guide are combined with plate 11.
[0198] As shown in Figure 18, a guide mechanism 190 according to the present embodiment is provided with a first guide plate 191 of date indicator, a second guide plate 192 of date indicator and a third date indicator guide plate 193. The first date indicator guide plate 191, the second date indicator guide plate 192 and the third date indicator guide plate 193 act as a rotational guide part according to the present invention and are combined with the date indicator. platinum 11.
In FIG. 18, essentially the first date indicator guide plate 191, the second date indicator guide plate 192, the third date indicator guide plate 193, the date indicator 90 and the jumper date 120 are illustrated and the representation of other parts of the timepiece has been deliberately omitted for the sake of simplification.
[0200] The first date indicator guide plate 191, the second date indicator guide plate 192 and the third date indicator guide plate 193 are superimposed on the plate 11 using the fixed positioning pin 161. to plate 11 and are combined with plate 11 using the connecting screw 162.
[0201] The first date indicator guide plate 191 and the second date indicator guide plate 192 are located on the side opposite the date jumper 120 in the radial direction, the central axis C being interposed between them, seen according to the direction of the central axis C, and are arranged at a certain distance in the circumferential direction. The third date indicator guide plate 193 is located on the side of the clockwise direction of rotation with respect to the second date indicator guide plate 192.
[0202] The outer peripheral surface of the first date indicator guide plate 191 is configured so as to have a radius R2 equal to or less than the radius R1 (see FIG. 7) of the rotational path M of the tip of the internal tooth. 92centred on the central axis C and constitutes the guide surface 195 facing the internal teeth 92 of at least two teeth or more from the inside in the radial direction.
[0203] Similarly, each of the outer peripheral surfaces of the second date indicator guide plate 192 and of the third date indicator guide plate 193 has a radius R2 equal to or less than the radius R1 of the rotational path M of the date indicator. inner tooth tip 92 centered on the central axis C and constitute the guide surface 195 facing the inner teeth 92 of at least two or more teeth from the inside in the radial direction.
[0204] Even with the guide mechanism 190 of the present embodiment designed as described above, the same effects as those of the first embodiment can be obtained.
In particular, the first date indicator guide plate 191 and the second date indicator guide plate 192 are arranged such that at least the guide surface 195 is located on the side opposite the date jumper. 120 in the radial direction, the central axis C being interposed between them. Consequently, in the stationary state of the date indicator 90 held in position under the action of the compressive force exerted by the date jumper 120, one of the internal teeth 92 facing the first guide plate 191d ' date indicator is in reliable contact with the guide surface 195, and one of the internal teeth 92 facing the second date indicator guide plate 192 is in reliable contact with the guide surface 195.
[0206] Therefore, even in the case of the present embodiment, the date indicator 90 may find itself in a stationary state where the rotational position is adequately positioned, by the engagement (P3) between the first surface. 123a of the jumper control part 123 and the internal teeth 92 and the engagement (P4) between the second engagement surface 123b of the jumper control part 123 and the internal teeth 92 in the date jumper 120.
[0207] In addition, the date indicator 90 is positioned, relative to the direction of the plane of the plate 11, by a four-point contact consisting of two contact positions (P1, P2) between the two internal teeth 92 and the guide surface 195 and by two engagement positions (P3, P4) between the jumper control part 123 in the date jumper 120 and the internal teeth 92.
[0208] In the second embodiment, for example, the guide surface 195 of the third date indicator guide plate 193 may act as an auxiliary guide surface according to the present invention by forming a ray from it. of the central axis C smaller than that of the guide surface 195 of the first guide plate 191 of the date indicator and the like.
(Third embodiment)
[0209] Next, a third embodiment according to the invention will be described, with reference to the drawings. In the third embodiment, the same parts as the elements in the first embodiment are designated by the same reference number and the corresponding description will be omitted.
[0210] As illustrated in Figures 19 and 20, the guide mechanism 130 of this embodiment is provided with the date indicator guide plate 140 which has a projecting part 300 projecting outwardly in the radial direction so overlapping the internal teeth 92 in the thickness direction of the plate 11 and determining the position of the date indicator 90 in the thickness direction.
[0211] The protruding part 300 is formed along the outer peripheral edge of the date indicator guide plate 140 and has a prominent shape as a rim outwardly in the radial direction so as to be located above the guide surface 141. Therefore, the protrusion 300 is located above the internal teeth 92, and is disposed so as to cover at least the tip of the internal teeth 92 from above.
[0212] According to the date indicator guide plate 140 according to the present embodiment designed in this way, the same effects as those of the first embodiment can be achieved and the protruding part 300 can be used to adjust the position of the date indicator. the date indicator 90 in the direction of the thickness of the plate 11. Therefore, for example, the size of the plate of the adjusting wheel 15 now the date indicator 90 can be reduced and it is easy to save time. the place.
[0213] In the above, although the embodiments of the present invention are described, these embodiments are presented as examples and are not intended to limit the protective field conferred for the invention. The embodiment can be implemented using different other forms and different omissions, different replacements and different modifications can be made without departing from the spirit of the invention as defined in the claims. Embodiments and examples of corresponding variations include, for example, those which can be readily provided by those skilled in the art, those which are substantially identical, those which have the same and similar scope.
[0214] For example, in each of the above embodiments, although the mechanical timepiece is described by way of example, the present invention is not limited to such a case and could for example be applied. to a quartz type timepiece. In this case, for example, the driving force of a stepper motor can be used to turn each wheel.
[0215] Further, in each of the above embodiments, although the date indicator is described as an example of a display wheel for displaying information, the invention is not limited to a date indicator. For example, a day indicator which displays the day of the week as information could be applied as a display wheel or a display wheel which would display various other information could also be employed.

权利要求:
Claims (11)
[1]
A guide mechanism (130) rotating and guiding an annular display wheel (90) having a plurality of internal teeth (92) and displaying information about an axis at a predetermined cycle, the mechanism comprising:a rotational guide portion (140) formed separately from a stage (11) and combined with the stage (11) in a state that it is disposed radially inside the display wheel (90) with respect to to the internal teeth (92),the rotational guide portion (140) comprising a guide surface (141) located at the same height as that of the internal teeth (92) in the direction of the thickness of the plate (11) andthe guide surface (141) being a curved surface having a radius (R2) equal to or less than that of a rotational path of a tooth tip selected from internal teeth (92) centered on the central axis, and forming facing at least two or more internal teeth (92) from the inside in the radial direction.
[2]
2. Guide mechanism (130) according to claim 1,the rotational guide part (140) being made of a material of high hardness having a hardness greater than that of the plate (11).
[3]
3. Guide mechanism (130) according to claim 1 or 2,a coating layer (180) having a coefficient of friction lower than that of the platen (11) being formed on at least the guide surface (141) in the rotational guide portion (140).
[4]
4. A guide mechanism (130) according to any one of claims 1 to 3, further comprising:an auxiliary guide part located on the stage (11) in a state that it is disposed so as to align along a circumferential direction of the display wheel (90) with respect to the guide part in rotation (140),the auxiliary guide portion comprising an auxiliary guide surface (141) located at the same height as that of the internal teeth (92) in the thickness direction of the plate (11) andthe auxiliary guide surface (141) being a curved surface having a radius less than the radius (R2) of the guide surface (141) centered on the axis, and facing the internal teeth (92) from the inside in the radial direction.
[5]
5. Guide mechanism (130) according to claim 4,the auxiliary guide part being formed integrally with the plate (11).
[6]
6. Guide mechanism (130) according to any one of claims 1 to 5,the rotational guide portion (140) comprising a protrusion (300) projecting outwardly in the radial direction so as to overlap the internal teeth (92) in the thickness direction of the plate (11) and adjusting a position of the display wheel (90) in the thickness direction.
[7]
7. Information display mechanism comprising:the guide mechanism (130) according to any one of claims 1 to 6;the display wheel (90);a drive wheel (100) comprising a finger capable of meshing with the internal teeth (92) and of rotating the display wheel (90) about the axis at a predetermined cycle; andan index member exerting an adjusting force on the display wheel (90) radially outward and determining a rotational adjustment position of the display wheel (90).
[8]
8. An information display mechanism according to claim 7,the rotational guide portion (140) being arranged such that at least the guide surface (141) is located on the side opposite to the indexing element in the radial direction, the axis being interposed between them.
[9]
9. An information display mechanism according to claim 7 or 8,the display wheel (90) being a date indicator displaying a date (91) as information.
[10]
10. Movement (10) comprising:the information display mechanism according to any one of claims 7 to 9.
[11]
11. Timepiece (1) comprising:the movement (10) according to claim 10.

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同族专利:

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公开号 | 公开日

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CN113341674A|2021-09-03|

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JP2021139637A|2021-09-16|

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JP6766283B1|2020-10-07|

引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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JP2020034874A|JP6766283B1|2020-03-02|2020-03-02|Guidance mechanism, information display mechanism, movement and clock|

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