• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In order to easily repair a star wheel and a jumper, and to easily replace components only as needed, there is provided a gear body (44) comprising: a first gear (60) including a star wheel ( 66) having a plurality of latching portions (66b), rotated about an axis O2 by a rotational pulse force imparted by a power source and transmitted via a gear mechanism (23). ); a second gear (61) releasably coupled to the first gear operable in rotation about that axis; and an intermediate body (62) disposed between the first gear and the second gear, detachably engaged with the second gear, and having a jumper with a tilting restriction pawl for removably engaging with the snap portions, which is capable of elastic deformation, the jumper transmitting the rotation of the first gear to the second gear through the mutual grip of the tilting restriction pawl with the snap portions, and undergoing elastic deformation in order to release the mutual engagement of the tilting restriction pawl with the ratchet portions, thereby permitting relative rotation of the second gear with respect to the first gear.
    公开号:CH710118A2
    申请号:CH01320/15
    申请日:2015-09-11
    公开日:2016-03-15
    发明作者:Yasuhiro Arakawa
    申请人:Seiko Instr Inc；
    IPC主号:
    专利说明:

    BACKGROUND OF THE INVENTION
    1. Technical field of the invention
    The present invention relates to a gear body, an adjustment mechanism of a time difference, a watch movement, and a timepiece.
    2. Description of the prior art relating to the invention
    [0002] Time difference adjustment mechanisms are already known which make it possible to adjust the position of the hour hand in an arbitrary position in order to correct a temporal difference accompanying a movement from one region to another involving a change. time zone. Typically, the time adjustment consists of an operation of advancing or restoring the hour hand in an intermittent position at one hour intervals. For such time adjustment mechanisms, it is known, for example, to use a tilt restriction lever (jumper).
    For example, the mechanism for adjusting a time difference according to JP-UM-B-59-18377 (Patent Document 1) is equipped with a wheel hours in which is mounted a first portion of tube to which the hour hand is mounted, and which are integrated a second tube portion comprising a star wheel arranged to rotate with the rotation of a minute wheel, and a jumper brought inside the first wheel of the hours and fixed thereto, the whole being arranged as a block as a unit.
    The jumper comprises a tilting restriction portion in removable gear engagement with latching portions of the star wheel; thanks to this mutual gearing, the first hour wheel and the second hour wheel are rotated synchronously; in addition, by means of an elastic deformation, the engagement of the tilting restriction portion with respect to the pawl can be released, thus allowing a relative rotational movement of the first hour wheel relative to the second wheel of the hours.
    Thus, normally, the first hour wheel and the second hour wheel rotate synchronously relative to each other, so that the hour hand is rotated by the minute wheel. to display the time. On the other hand, when setting a time difference, the first hour wheel, at which the hour hand is mounted, is rotated. During this process, the rotation of the second hour wheel is regulated by the action of a fixed torque of needle displacement applied via a right-of-way with a gear mechanism, so that the jumper undergoes an elastic deformation, and releases the engagement of the tilting restriction portion vis-à-vis that of the ratchet. Therefore, it is possible to rotate the first hour wheel with respect to the second hour wheel by causing the jumper to slide, thereby making it possible to adjust the position of the hour hand.
    In order to move the hour hand intermittently in intervals of one hour, it is necessary to press the jumper against the star wheel with a large force, to reliably ensure the grip of the tilt restriction portion with each ratchet portion of the star wheel. Thus, during time difference setting operations, the star wheel and tilt restriction portion are subject to wear, requiring maintenance such as component repairs and replacements.
    However, the conventional hour wheel is a complicated structure formed by the integration of a plurality of components, as described above, so that repair work for example takes time and require a lot efforts; when a repair is too difficult to perform, there is nothing to do but replace the hour wheel with a new one. Thus, the maintenance costs (after-sales service) involved are rather high, and this economic burden is passed on to the user, which means that there is a good margin for improvement.
    SUMMARY OF THE INVENTION
    The present invention has been made in view of the problem above; an object of the present invention is to provide a gear body for easy repair of a star wheel and a jumper, as well as the replacement of components as required, and a time difference adjusting mechanism, a watch movement, and a timepiece that are equipped with it.
    [0009] (1) According to the present invention there is provided a gear body comprising: a first gear comprising a star wheel having a plurality of latching portions, rotated about an axis by a force of rotational impulse of a power source transmitted via a gear mechanism; a second gear removably coupled to the first gear, rotatable about that axis; and an intermediate body disposed between the first gear and the second gear, removably engaged with the second gear having a jumper having a tilting restriction pawl, removably engaged with the detent portions, and is capable of being elastically deformed, the jumper transmitting the rotation of the first gear to the second gear through engagement of the tilting restriction pawl with the detent portions, and undergoes elastic deformation to release the grip of the ratchet restriction pawl of the ratchet portions, thereby permitting relative rotational movement of the second gear relative to the first gear.
    In the above gear body, the tilter swing restriction pawl is engaged with the ratchet portions of the star wheel, so that the first gear and the second gear are mutually engaged. integrated via the jumper. Thus, when the first gear is rotated about the axis by the rotational force of the power source transmitted through the gear mechanism, this rotational force is transmitted to the second gear. gearing via the intermediate body including the jumper. Therefore, in the state where the first gear and the second gear are synchronized with respect to each other, it is possible to rotate the two gears about the axis. Thus, in the case where for example the hour hand is mounted to the second gear, it is possible to perform the display of the hour through the rotation of the hour hand.
    When the rotational impulse force is transmitted to the second gear, the rotational impulse force is transmitted to the first gear via the jumper; however, the rotation of the first gear is regulated by the action of a fixed torque of the applied hour hand because of its grip with the gear train. Thus, the jumper undergoes an elastic deformation in order to be deflected and release the mutual grip between the tilting restriction pawl and the snap portions. Therefore, it is possible to rotate the second hour wheel with respect to the first hour wheel by causing the jumper to slide relative to the star wheel. Thus, when for example, the hour hand is mounted to the second gear, it is possible to adjust the position of the hour hand, thus making it possible to adjust the time difference. In addition, when the second hour wheel is rotated relative to the first hour wheel, the jumper slides intermittently so that the tilting restriction pawl can exceed each of the teeth of the star wheel one by one. one, so that it is possible to rotate the second gear intermittently. Thus, it is possible, for example, to adjust the time difference by advancing the hour hand hour by hour.
    In particular, in this gear body, it is possible to disengage the second gear of the first gear, and it is possible to disengage the intermediate body of the second gear, so that it is possible to easily obtain a decomposition into three components (parts): the first gear, the second gear, and the intermediate body. Thus, even when the ratchet portions of the starwheel and tilt restriction pawl are worn by friction, and require repair, it is possible to easily repair the starwheel and jumper. In addition, as needed, it is possible to replace one by one the first gear, the second gear, and the intermediate body. Thus, it is possible to ensure maintenance operations easily and at low cost, by making it possible to shorten the duration of the maintenance operations, and to relieve the user of the economic burden generated by the maintenance operations.
    (2) The intermediate body may have a through hole through which the star wheel passes, and be equipped with a sheet-shaped body-sheet superimposed over the second gear and brought into engagement with removable with the second gear; and the jumper may be arranged at the inner face of the through-hole, and take the form of a tongue whose proximal end portion is connected to the body-leaf, and whose distal end portion is free, the tilt restriction pawl being arranged at the distal end portion.
    In this case, the body-sheet is engaged with the second gear when it is superimposed above the second gear, but it is possible to couple the intermediate body parallel to the second gear, so that it It is possible to avoid the application of any excessive stress to the jumper at the time of the combination. Thus, even if the gear body is dismantled for maintenance purposes, and then reassembled, it is possible to precisely engage the ratchet portions of the star wheel with the tilting restriction pawl. Thus, when for example, the time difference adjusting operation is carried out, it is possible to subject the jumper to adequate elastic deformation, so that it is possible to improve the performance of the gear body in terms of reliability for use over a long period of time.
    [0015] (3) The first gear may have a first gear portion engaged with a minute wheel, and the second gear may have a tubular body to which an hour hand is mounted and a second gear portion engaged with a setting wheel of a time difference.
    In this case, it is possible to use the gear body as an hour wheel, and to rotate the first gear and the second gear in synchronization with the rotation drive of the minute wheel. thus making it possible to rotate the hour hand for displaying the time. In addition, by rotating the hour setting wheel, it is possible to drive the second hour wheel in rotation with respect to the first hour wheel while causing the jumper to slide relative to the wheel. star, so that the position of the hour hand can be adjusted to adjust the time difference. By thus using the gear body as the hour wheel, it is possible to adjust the time difference appropriately.
    (4) The time difference adjusting mechanism according to the present invention is equipped with the gear body and a gear train for adjusting the time difference in order to drive in rotation the adjusting wheel of the time difference.
    In this time difference setting mechanism, it is possible to adjust the time difference appropriately by operating in rotation the clockwise adjustment wheel as required. In particular, it is equipped with a gear body that can be easily dismantled into three components, ie the first gear, the second gear, and the intermediate body, so that it is possible to perform the maintenance operation for the entire time difference adjustment mechanism easily and at low cost.
    [0019] (5) A watch movement according to the present invention is equipped with such a mechanism for adjusting a time difference.
    [0020] (6) A timepiece according to the present invention is equipped with such a watch movement.
    In the watch movement and the timepiece, the mechanism for adjusting a time difference described above is provided, so that it is possible to carry out maintenance operations relating to adjustments of the time. time difference easily and at low cost, thus providing a watch movement and a timepiece with better maintenance qualities.
    According to the present invention, it is possible to easily repair the star wheel and the jumper, and perform partial replacements, so that it is possible to perform maintenance operations easily and at low cost , by making it possible to shorten the duration of maintenance operations, and to relieve the user of the economic burden that results.
    BRIEF DESCRIPTION OF THE FIGURES
    [0023]<tb> Fig. 1 <SEP> is a view from the outside of the timepiece according to an embodiment of the present invention.<tb> Fig. 2 <SEP> is a partial sectional view of the movement illustrated in FIG. 1.<tb> Fig. 3 <SEP> is a partial sectional view of the movement illustrated in FIG. 1 according to a different point of view of FIG. 2.<tb> Fig. 4 <SEP> is a partial sectional view of the movement illustrated in FIG. 1 according to a point of view different from FIGS. 2 & 3.<tb> Fig. <SEP> is a sectional view illustrating a state in which, from the state illustrated in FIG. 3, a winding stem is pulled outwardly to bring a gear wheel into engagement with the minute wheel.<tb> Fig. 6 <SEP> is a sectional view of an hour wheel forming part of the movement shown in FIG. 2.<tb> Fig. 7 <SEP> is a sectional view taken along the axis A-A of the hour wheel shown in FIG. 6.<tb> Fig. 8 <SEP> is a sectional view of a first hour wheel constituting the hour wheel shown in FIG. 6.<tb> Fig. 9 <SEP> is a top view of the first hour wheel shown in FIG. 8.<tb> Fig. <SEP> is a sectional view of a second hour wheel constituting the hour wheel shown in FIG. 6.<tb> Fig. 11 <SEP> is a top view of the second hour wheel shown in FIG. 10.<tb> Fig. 12 <SEP> is a sectional view of a jumper of hours constituting the hour wheel illustrated in FIG. 6.<tb> Fig. 13 <SEP> is a top view of the hours jumper illustrated in FIG. 12.<tb> Fig. 14 <SEP> is a perspective view of a variant of the jumper hours illustrated in FIG. 12.<tb> Fig. <SEP> is a perspective view of another variation of the hour jumper illustrated in FIG. 12.<tb> Fig. 16 <SEP> is a sectional view of a variant of the second hour wheel illustrated in FIG. 10.
    DETAILED DESCRIPTION OF PREFERENTIAL EMBODIMENTS
    In what follows, we will describe an embodiment of the present invention with reference to the drawings.
    In this embodiment presently described, a mechanical watch will be described by way of example for the timepiece.
    [Construction of the timepiece]
    Generally, we refer to the "movement" to talk about the mechanical body including the drive portion of the timepiece. We refer to the "completeness" of a timepiece when talking about the complete product obtained by mounting the dial and hands to this movement, and placing everything in the case of the timepiece. Of the two sides of the main plate constituting the substrate of the timepiece, the one where the crystal of the timepiece is located (the side where the dial is located) is commonly called the "rear face" of the movement, while on both sides of the main stage, the one where the bottom of the timepiece is located (the opposite side to the dial) is commonly called the "front face" of the movement.
    In the description of the present embodiment, reference will be made to the direction extending from the dial towards the bottom as being the upper face, and reference will be made to the opposite side thereof as being the opposite face.
    As illustrated in FIGS. 1 & 2, the entirety of a timepiece 1 according to the present embodiment is equipped, inside a timepiece case 3 consisting of a bottom (not shown) and an ice cream 2 , a movement (movement of the timepiece according to the present invention) 10, a dial 11 provided with a scale or the like indicating hourly information.
    Between the dial 11 and the ice 2, are arranged a 12 hour hand indicating the time, a minute hand 13 indicating the minute, and a seconds hand 14 indicating the current second; in addition, a 24-hour hour hand is disposed coaxially with the hour hand 12, the minute hand 13, and the second hand 14. In addition, a bezel 4 with a scale of 24 hours is mounted on the housing 3 of the timepiece. Therefore, it is possible to simultaneously display the time information of two locations at the same time.
    In addition, the dial 11 is provided with a display portion of the date 5 indicating the date, for example at 3 o'clock. A date display hand 16 is arranged in the center of the display portion of the date 5. Therefore, in addition to the time, it is possible to check the date. In fig. 1, only part of the date is shown on the display portion of the date 5.
    [Movement of the timepiece]
    As illustrated in FIGS. 2 to 5, the movement 10 is equipped with a main plate 20, one or a plurality of support plates 21 disposed on the rear face of the main plate 20, and a gear train bridge 22 arranged on the front face of the main plate 20. On the rear face of the support plates 21 is arranged the dial 11 so that the latter is visible through the glass 2.
    Between the main plate 20 and the gear train deck 22 is at least arranged a gear mechanism 23 to perform the display of the current time, a drive mechanism of the indicator of date 24 to change the date, and a time difference adjusting mechanism 25 for adjusting the time difference of the hour wheel 12. A winding stem 30 is rotatably mounted in the main plate 20 through a guide hole of the winding stem (not shown).
    The winding stem 30 is connected to a ring 31 illustrated in FIG. 1, and its distal end portion is pivotally mounted in the main plate 20. In addition, the winding stem 30 can be moved in the direction of the axis O1 of the winding stem 30 when the ring 31 is pulled towards outside. During this process, the position of the winding stem 30 in the direction of the axis O1 is determined by a switching device including an adjusting lever, a rocker 32 (see Fig. 5), and a rocker spring.
    In the present embodiment described here, the winding stem 30 can be moved and maintained in three discrete positions: the position "0" which is its position proximal to the movement 10, the position "1" where the crown 31 is drawn one notch relative to the position "0", and the position "2" where the crown 31 is pulled a further notch relative to the position "1".
    At the winding stem 30 are mounted a clutch wheel 33 (see Fig. 5) and a winding pinion (not shown). The clutch wheel 33 is rotated about the axis O1 by the rotation of the winding stem 30; at the same time, it moves along the winding stem 30 due to the rocker 32 when the winding stem 30 moves in the direction of the axis O1. At this moment, the clutch wheel 33 moves in the opposite direction to that of the winding stem 30.
    More specifically, when the winding stem 30 is in position "0", the clutch wheel 33 is engaged with the winding pinion; when the winding stem 30 is in position "1", it moves inwardly of the movement 10 to be brought into engagement with the clockwise adjustment wheel 85; and when the winding stem 30 is in position "2", it moves even further inwardly of the movement 10 to be engaged with the minute wheel 43, as illustrated in FIG. 5.
    Between the main plate 20 and the gear train deck 22 are arranged a movement barrel 40, a central mobile 41, formed of a wheel and a pinion, driven in rotation by that of the barrel of the barrel. movement 40, a second mobile 42 formed of a wheel and a pinion driven in rotation by the first mobile 41 via a third mobile (also formed of a wheel and a pinion, not shown), the minute wheel 43 driven in rotation by the central mobile 41, an hour wheel (gear body according to the present invention) 44 driven in rotation by that of the minute wheel 43, an intermediate wheel hours 45 driven in rotation by that of the hour wheel 44, and a 24 hour hour wheel 46 driven in rotation by that of the hour intermediate wheel 45. These wheels constitute the gear mechanism 23 of the front face.
    As illustrated in FIG. 3, the barrel of the movement 40 is pivotally mounted with respect to the main plate 20, the support plate 21, the gear train deck 22, etc., and has a barrel toothing 40a and a main spring (not shown ) housed inside of it. The main spring is reassembled by a transmission gear such as a crown wheel through the rotation of the winding pinion via the rotation of the clutch wheel 33 mentioned above. The barrel of the movement 40 is rotated by using the force of the main spring as a source of energy when the latter relaxes.
    As illustrated in FIGS. 2 and 3, the mobile (wheel & pinion) central 41 is equipped with a tubular main body 41A engaged with the toothing of the barrel 40a and a barrel 41B disposed at a lower end portion of the main body 41A, and is supported by a support plate 21 so as to be rotatable about an axis O2. In this process, the rotation of the central wheel (pinion & pinion) 41 is controlled to effect a complete revolution per hour by a governance / escape mechanism 50 described below.
    The barrel 41B can rotate at the same time as the main body 41A of the mobile (wheel & pinion) central 41, and projects in the direction of the ice 2 beyond the dial 11. The minute hand 13 is mounted on the lower end portion of this projecting barrel 41B.
    The barrel 41B is provided with a sliding mechanism relative to the main body 41A of the mobile (wheel & pinion) central 41; when the time adjustment operation described below is performed, the barrel 41B can be rotated while sliding relative to the main body 41A of the mobile (wheel & pinion) central 41.
    The second mobile (wheel & pinion) 42 has an axis 42a inserted inside the mobile (wheel & pinion) central 41, and is arranged coaxially with respect to the axis O2 of the mobile (wheel & pinion) central 41. For this purpose, an upper tenon portion and the axis 42a of the second mobile (wheel & pinion) 42 are respectively supported between the gear train deck 22 and the main plate 20 in order to be able to turn around the O2 axis. The second mobile (wheel & pinion) 42 is engaged with the central mobile (wheel & pinion) 41 via the third mobile (wheel & pinion also, not shown), and is rotated by the rotation of the central mobile (wheel & pinion). pinion) 41. In addition, the second mobile (wheel & pinion) 42 is engaged with an escape wheel (wheel & pinion) 51 constituting the governance / exhaust mechanism 50 controlling the rotation of the gear mechanism 23 Therefore, the second wheel (pinion & pinion) 42 is precisely controlled in rotation so that it makes a complete revolution per minute.
    The lower part of the axis 42a of the second mobile (wheel & pinion) 42 protrudes towards the window 2 beyond the lower end of the barrel 41 B, and the second hand 14 is mounted on this protruding end portion.
    The minute wheel 43 is mounted free to rotate on the main plate 20, and is engaged with the barrel 41B of the central mobile (wheel & pinion) 41. Therefore, the minute wheel 43 is rotated by the rotation of the central mobile (wheel & pinion) 41. Moreover, when the winding stem 30 is in position "2" after having pulled the ring 31 out of the caseband, as explained above, the clutch wheel 33 is brought into engagement with the minute wheel 43, as illustrated in FIG. 5. Thus, in this case, the minute wheel 43 is rotated by the rotation of the clutch wheel 33.
    As illustrated in FIGS. 2 and 3, the hours wheel 44 taken in its entirety has a tubular configuration, and is arranged coaxially with respect to the axis O2 of the central mobile (wheel & pinion) 41; it is rotatably mounted around the axis O2 around a central cylindrical tube 52 integrated in the support plate 21. For this hour wheel 44, a first hour wheel 60 described below is engaged with the minute wheel 43, while the hour wheel is rotated by the rotation of the minute wheel 43.
    In addition, the rotation of the hours wheel 44 is accurately controlled by the governing mechanism / exhaust 50 to perform a complete rotation every 12 hours. In addition, the hour hand 12 is mounted on the lower end portion of the second hour wheel 61 (described below) of the hour wheel 44. For this purpose, the hour hand 12 is arranged dial side 11 with respect to minute hand 13.
    The architecture of the hour wheel 44 is described in more detail in the following.
    As illustrated in FIG. 3, the hour intermediate wheel 45 is rotatably mounted on the main plate 20 and the support plate 21, and is engaged with the first hour wheel 60 of the hour wheel 44.
    The hour wheel 24 hours 46 has a tubular configuration, and is arranged coaxially with the axis O2 of the central mobile (wheel & pinion) 41; it is nested above the central tube 52, while remaining free in rotation relative to it. As a result, the 24 hour hour wheel 46 is supported by the central tube 52 so that it can rotate about the axis O2. The 24-hour hour wheel 46 is engaged with the hour intermediate wheel 45, so that it is rotated with the rotation of the hour wheel 44 via the hour intermediate wheel 45.
    The reduction ratio between the hour intermediate wheel 45 and the hour wheel 44 is 1/2. As a result, the rotation of the 24 hour hour wheel 46 is precisely controlled to perform a complete revolution every 24 hours. A 24-hour hour hand 15 is mounted on the lower end portion of the 24-hour hour wheel 46. In this case, the 24-hour hour hand is located on the dial side 11 relative to the hour hand 12.
    [Wheel of Hours]
    In what follows we will describe the hour wheel 44 previously mentioned in detail.
    As illustrated in FIGS. 6 and 7, the hour wheel 44 is equipped with a first hour wheel (first gear according to the present invention) 60, a second hour wheel (second gear according to the present invention) 61, a jumper hours (intermediate body according to the present invention) 62 disposed between the first hour wheel 60 and the second hour wheel 61, and the first hour wheel 60, the second hour wheel 61, and the hour jumper 62 are combined around the same axis, while remaining separated from each other, the axis O2 serving as a common axis. As a result, the hours wheel 44 in its entirety has a tubular configuration.
    As illustrated in FIGS. 6 to 9, the first hour wheel 60 is equipped with a first annular portion of the hour wheel (first gear portion according to the present invention) 65 comprising, on its entire peripheral edge, toothed portions 65a. engaged with the minute wheel 43 and the hour intermediate wheel 45, and a star wheel 66 having a plurality of detent portions 66b on a tubular main body 66a of the star wheel.
    The main body 66a of the star wheel is fitted above the barrel 41B of the central mobile (wheel & pinion) 41 so as to be free to rotate about the axis O2, the starwheel 66 being combined at the central mobile (wheel & pinion) 41. The upper end portion of the main body 66a of the star wheel is fixed to the first hour wheel portion 65 being for example, introduced from below. Within the outer peripheral surface of the star wheel main body 66a, the other than the upper end portion of the main body 66a of the star wheel (i.e., the non-nested portion of the star wheel). inside the first portion of the hour wheel 65) has snap portions 66b formed at regular intervals in the circumferential direction of the main body 66a of the star wheel. In the example illustrated, the number of teeth of the latching portions is 12.
    As illustrated in FIGS. 6, 7, 10, and 11, the second hour wheel 61 is disposed below the first hour wheel 60, and is detachably coupled to the first hour wheel 60. In the case of the presently described embodiment the second hour wheel 61 is kept in contact with the first hour wheel 60 only from below, and is coupled thereto by gearing via the hour jumper 62.
    The second hour wheel 61 is equipped with a tubular body 70 inserted inside the central tube 52, and is supported by the central tube 52 in order to be rotated about the axis O2, and a second annular portion of the hour wheel (second gear portion according to the present invention) 71 provided, over its entire outer edge, toothed portions 71a engaged with the hourly difference adjusting wheel 85. According to the illustrated example, the upper part of the tubular body 70 and the second portion of the hour wheel 71 are integrally formed.
    As described above, the central mobile (wheel & pinion) 41 and the second mobile (wheel & pinion) 42 are inserted inside the tubular body 70. The hour wheel 12 is mounted on the part of In addition, the second portion of the hour wheel 71 is provided with a first mounting hole 72 for coupling with the jumper hours 62. According to the illustrated example, the first hole of 72 is formed in a circular configuration according to a plan view, and two such holes are arranged to face each other in the radial direction of the second hour wheel 61 and so that the axis O2 is interposed between the two.
    In addition, the second hour wheel 61 includes a gear part of the annular date 73 having, over its entire outer peripheral edge, toothed portions 73a engaged with the drive wheel of the date indicator 80 described below. This gear part of the date 73 is fixed to the tubular body 70 by interlocking. In this process, the gear part of the date 73 is fixed to the tubular body 70 so that it is in contact with the lower surface of the second part of the hour wheel 71.
    As illustrated in FIG. 2, the second hour wheel 61 thus assembled is precisely positioned in the direction of the axis O2 by inserting the tubular body 70 in the central tube 52, and placing the gear part of the date 73 at the level of the upper end of the opening of the central tube 52, and it can be actuated in rotation stably around the axis O2.
    As illustrated in FIGS. 6, 7, 12, and 13, the hour jumper 62 is releasably coupled to the second hour wheel 61 while being disposed between the first hour wheel 60 and the second hour wheel 61 in the direction of the O2 axis.
    The jumper hours 62 is provided with a jumper capable of being elastically deformed (jumper according to the present invention) 75, provided with a tilting restriction pawl 75a removably engaging with the portions of the invention. snap 66b of the star wheel 66, and a body-sheet 76 superimposed above the upper surface of the second portion of the hour wheel 71 and carrying the jumper 75. The jumper hours 62 is formed by pressing a thin metal plate or resin.
    The body-sheet 76 is formed in an outer circular configuration of diameter substantially identical to that of the first part of the hour wheel 65 and the second part of the hour wheel 71, and is provided with a hole through 76a through which passes the star wheel 66 of the first hour wheel 60. Therefore, the body-sheet 76 is superimposed above the upper surface of the second part of the hour wheel 71 surrounding the wheel in star 66, without however hindering the movement 66.
    In addition, the body-sheet 76 is provided with a second mounting hole 76b disposed in a position axially covering the first mounting hole 72 formed in the second part of the hour wheel 71. And a fixing pin 77 is inserted into the first mounting hole 72 via the second mounting hole 76b with the aid of, for example, an intermediate fit. As a result, the hour jumper 62 is removably engaged with the second portion of the hour wheel 71 via the sheet body 76.
    The jumper 75 is arranged on the inner face of a through hole 76a formed in the body-sheet 76, and its proximal end portion is connected to the body-sheet 76, the jumper being in the form of a tongue whose distal end portion is free. Thus, as indicated by the arrow in FIG. 7, the jumper 75 is resiliently deformable in the radial direction of the star wheel 66, its proximal end portion being in the center, and the tilting restriction pawl 75a is formed at the portion of distal end of the jumper 75.
    As illustrated in FIG. 2, the hours jumper 62 thus constructed is coupled with the first hour wheel 60 and the second hour wheel 61 to press the jumper 75 against the star wheel 66 with a fixed force to bring the restriction pawl tilt 75a engaged with the snap portions 66b of the star wheel 66. Therefore, due to the mutual reach of the tilt restriction pawl 75a with the snap portions 66b, the hour jumper 62 transmits the rotational impulse force of the first hour wheel 60 to the second hour wheel 61, so that the first hour wheel 60 and the second hour wheel 61 can rotate together synchronously.
    In addition, when the rotational impulse force is transmitted to the second hour wheel 61, the jumper 75 undergoes an elastic deformation, so that it is deflected outwards with respect to the wheel. star 66, thus releasing the mutual engagement of the teeth of the tilting restriction pawl 75a with respect to those of the snap portions 66b. Therefore, it is possible to rotate the second hour wheel 61 with respect to the first hour wheel 60 by causing the jumper 75 to slide relative to the star wheel 66.
    [Date Mechanism]
    As illustrated in FIG. 2, between the main plate 20 and the support plate 21, is arranged a drive wheel of a date indicator 80, rotated on the basis of the rotation of the hour wheel 44, and having a finger of date (not shown), and a date star wheel 81 rotated by the date finger. The date indicator drive wheel 80 and the date star wheel 81 constitute a calendar mechanism 24.
    The date indicator drive wheel 80 is rotatably mounted on the support plate 21, and is engaged with the second portion of the hour wheel 71 of the second hour wheel 61 of the wheel 44. Here, a reduction ratio between the driving wheel of the date indicator 80 with respect to the hour wheel 44 is 1/2. Therefore, the rotation of the drive wheel of the date indicator 80 is precisely controlled so that a complete revolution is performed every 24 hours.
    The date star wheel 81 is rotatably mounted on the support plate 21; it comprises 31 toothed portions 81a, and an axis 81b protruding towards the ice side 2 beyond the dial 11. This date star wheel 81 is indexed by one tooth each day via the date finger of the 80 date indicator drive wheel, thus making a complete revolution in 31 days. In addition, a date display needle 16 is mounted on the lower end portion of the shaft 81b. Thus, the date display is performed by the date display hand 16.
    The date star wheel 81 is engaged with a date jumper to ensure discrete positions during each indexing (not shown). Thus, the date star wheel 81 is reliably advanced one tooth each day.
    [0075] (Time difference adjustment mechanism)
    As illustrated in FIG. 4, between the main plate 20 and the support plate 21 is arranged a time difference adjusting wheel 85, engaged with the second hour wheel 61 at which the hour hand 12 is mounted.
    The time difference adjusting mechanism 85 is rotatably mounted on the support plate 21; when the winding stem 30 is in position "1" after pulling the crown 31, it is brought into engagement with the clutch wheel 33 via an intermediate wheel (not shown). Therefore, the clock difference adjusting wheel 85 is rotated by that of the clutch wheel 33, and at the same time actuates the second hour wheel 61 in rotation about the axis O2 relative to the first hour wheel 60. It is thus possible to adjust the time difference through the rotation of the hour hand 12.
    Thus, the winding stem 30 and the clutch wheel 33 constitute a clockwise adjustment gear train 86 actuating the hourly difference adjusting wheel 85 in rotation. In addition, the time difference adjusting gear train 86 and the hour wheel 44 constitute a time difference adjusting mechanism 25.
    [Operation and manipulation of the timepiece]
    In what follows, we will describe the operation of the timepiece 1 built according to the architecture described above.
    First, we will describe the display of the time and date.
    As illustrated in FIGS. 2 and 3, in this case, the barrel of the movement 40 is actuated in rotation by using the expansion force of the main spring as a source of energy, so that the rotational impulse force of the latter is transmitted. at the central mobile (wheel & pinion) 41, and the central mobile (wheel & pinion) 41 is rotated about the axis O2. The rotational impulse force transmitted to the central mobile (wheel & pinion) 41 is transmitted to the third mobile (wheel & pinion), to the second mobile (wheel & pinion) 42, to the minute wheel 43, and the first wheel of the 60 hours, so that all these wheels are rotated.
    As illustrated in FIG. 7, with respect to the hour wheel 44, at this time, the tilt restriction pawl 75a of the jumper 75 is engaged with the detent portion 66b of the star wheel 66, so that the first hour wheel 60 and the second hour wheel 61 are integrally coupled via the jumper 75. Thus, the rotational impulse force transmitted to the first hour wheel 60 is transmitted to the second hour wheel 61 via the jumper. hours 62, so that the entire hour wheel 44 rotates about the axis O2, with the first hour wheel 60 and the second hour wheel 61 in full synchronization with respect to each other .
    Thus, as illustrated in FIGS. 2 and 3, it is possible to actuate in rotation the second hand 14 mounted on the second mobile (wheel & pinion) 42, the minute hand 13 mounted on the barrel 41B of the central mobile (wheel & pinion) 41, and the hour hand 12 mounted on the second hour wheel 61 of the hour wheel 44. At this time, the escape wheel 51 (ie the wheel & the escape pinion) is engaged with the second movable (wheel & pinion) 42, and the rotation of the gear mechanism 23 is precisely controlled by the governing mechanism / exhaust 50, so that it is possible to cause the rotation of the second hand 14 to the rhythm of a complete revolution per minute, that of the minute hand 13 at the rate of a complete revolution per hour, and that of the hour hand 12 to the rhythm of a complete revolution every twelve hours, thus making it possible to accurately display time as it glossy in fig. 1.
    In addition, as illustrated in FIG. 3, the rotational impulse force transmitted to the hour wheel 44 is transmitted to the hourly intermediate wheel 45 and to the 24 hour hour wheel 46, thereby driving all these wheels in rotation. Thus, it is possible to accurately ensure that the 24-hour hour hand makes a complete revolution every 24 hours. Thus, as illustrated in FIG. 1, it is possible to accurately display a different time from that displayed by the hour hand 12 with the 24-hour hour hand 15, and the bezel 4 provided with a 24-hour scale.
    In addition, as illustrated in FIG. 2, the rotational pulse force transmitted to the hour wheel 44 is transmitted to the date indicator drive wheel 80, so that the date indicator drive wheel 80 performs a complete revolution. every 24 hours. For example, when the midnight hour is reached, the date indicator drive wheel 80 indexes the date star wheel 81 of a tooth with a force exerted against the date jumper. using the date finger. Therefore, as illustrated in FIG. 1, it is possible to rotate the display needle of the date 16 by an additional day, so that it is possible to display the date precisely.
    In what follows, the handling will be described when performing the adjustment operation of a time difference.
    In this case, the crown 31 is pulled two notches to the outside of the middle part so that the winding stem 30 moves from the "0" position to the "2" position. Therefore, as illustrated in FIG. 5, the clutch wheel 33 moves inwardly of the movement 10 to be brought into contact with the minute wheel 43. Thus, by actuating the winding stem 30 in rotation about the axis O1, it It is possible to turn the minute wheel 43 via the clutch wheel 33.
    Then, the rotational impulse force of the minute wheel 43 is transmitted to the barrel 41B and the first hour wheel 60, so that each of these wheels are rotated. At this stage, due to a fixed torque of needle movement acting on these elements due to gear engagement with the barrel teeth 40a and the third wheel (gear & pinion), the amplitude of the rotation of the central body 41A of the central mobile (wheel & pinion) is restricted, so that the latter performs a relative rotation, the barrel 41B sliding on the main body 41A of the central mobile (wheel & pinion). As a result, the minute hand 13 is rotated with that of the winding stem 30, thereby making it possible to adjust the minute hand 13.
    In addition, as in the case of the display of the time described above, the rotational impulse force transmitted to the first hour wheel 60 is transmitted to the second hour wheel 61 via the jumper hours 62, so that the entire hour wheel 44 rotates about the axis O2, with the first hour wheel 60 and the second hour wheel 61 in full mutual synchronization. Thus, it is possible to adjust the time on the hour hand 12 by operating the rotating hour hand 12 through that of the winding stem 30 about the axis O1.
    In addition, the rotational impulse force transmitted to the hour wheel 44 is transmitted to the hour intermediate wheel 45, so that it is possible to adjust the time on the wheel. 24 hour hour hand 15 by operating the 24-hour hand rotating 15 through the rotation of the winding stem 30. In addition, the rotational pulse force transmitted to the hour wheel 44 is also transmitted to the date indicator drive wheel 80, so that, by continuing to rotate the winding stem 30, it is possible to adjust the date via the rotation of the date display hand 16.
    In what follows, we will describe the case where the setting of a time difference is performed on the hour hand 12.
    In this case, the ring 31 is pulled from a notch out of the caseband, moving the winding stem 30 from the "0" position to the "1" position. As a result, the clutch wheel 33 moves inwardly of the movement 10, and is brought into engagement with the clock difference adjusting wheel 85 shown in FIG. 4. Thus, by rotating the winding stem 30 about the axis O1, it is possible to rotate the hourly difference adjusting wheel 85.
    Then, the rotational impulse force of the time difference adjusting wheel 85 is transmitted to the second hour wheel 61, so that the second hour wheel 61 is rotated. At this time, the rotational impulse force transmitted to the second hour wheel 61 is transmitted to the first hour wheel 60 via the hours jumper 62; however, the rotation of the first hour wheel 60 is restricted due to the action of a fixed needle displacement torque attributable to the gearing with the minute wheel 43. Thus, the jumper 75 shown in FIG. fig. 7 undergoes elastic deformation and is deflected, thereby releasing the tilting restriction pawl 75a of the snap portions 66b. Therefore, it is possible to rotate the second hour wheel 61 relative to the first hour wheel 60 while causing the jumper 75 to slide relative to the star wheel 66.
    Therefore, it is possible to perform the time difference setting operation by rotating the hour hand 12 through the rotation of the winding stem 30. In particular, when the second wheel 61 hours rotates relative to the first hour wheel 60, the jumper 75 slides intermittently so that the tilt restriction pawl 75a passes over the ratchet portions 66b (12 in total) of the wheel in a star 66, one by one, so that it is possible to rotate the second hour wheel 61 intermittently. Thus, it is possible to perform the operation of setting a time difference by indexing in rotation the hour hand 12 hours per hour.
    The rotational impulse force transmitted to the second hour wheel 61 is transmitted to the intermediate hour wheel 45 so that, by continuing to turn the winding stem 30, it is also possible to adjust 16 date display needle for setting the date.
    As described above, in the timepiece 1 of the present embodiment, there is provided an hour wheel 44 provided with a first hour wheel 60, a second hour wheel 61, and a jumper 62 hours, so that by turning the second hour wheel 61 relative to the first hour wheel 60, it is possible to properly adjust a time difference.
    In particular, as illustrated in FIG. 6, the hour wheel 44 is formed by separately combining the first hour wheel 60, the second hour wheel 61, and the hour jumper 62, so that by dismounting the second hour wheel 61 of the first hour wheel 60, and by disassembling the hours jumper 62 of the second hour wheel 61, it is possible to easily dismantle the hours wheel 44 into three components (parts).
    Thus, for example, even when the ratchet portions 66b of the starwheel 66 and the tilting restriction pawl 75a are worn away by abrasion or the like and require repair, it is possible to repair easily. the star wheel 66 and the jumper 75 as required. In addition, it is also possible to replace one by one the first hour wheel 60, the second hour wheel 61, and the jumper hours 62 as needed.
    [0100] Thus, it is possible to carry out maintenance operations easily and at low cost, by making it possible to reduce the time required for maintenance operations, and to relieve the user of the economic burden generated by these operations. maintenance.
    In addition, when the hour wheel 44 is dismantled for a maintenance operation, and then reassembled after repair, replacement of a component, etc., the hour jumper 62 is assembled to the second hour wheel 61 in using a fixing pin 77, the body-sheet 76 being superimposed above the second portion of the hour wheel 71 of the second hour wheel 61. Thus, at the time of assembly, it is possible to prevent the application of a surplus of stress to the jumper 75, thus making it possible to precisely engage the snap portions 66b of the star wheel 66 with the tilting restriction pawl 75a.
    Thus, by performing the time difference adjusting operation, it is possible to cause an appropriate elastic deformation of the jumper 75, so that it is possible to provide a wheel hours 44 having better properties in terms long-term operational reliability.
    The technical scope of the present invention is not limited to the embodiments described above, but allows various variants without departing from the scope or spirit of the present invention.
    For example, while the embodiment described above applies to a mechanical timepiece 1, the present invention is also applicable to a quartz timepiece. In this case, the gear mechanism 23 can be operated using, for example, the driving force of a stepper motor.
    In addition, while the above embodiment is equipped with a 24 hour hour wheel and a date display needle 16, these components are not essential and must not be used. necessarily be provided. In this case, in particular, it is not necessary to provide a gear portion of the date 73 to rotate the date indicator drive wheel 80, so that it is possible to simplify still the construction of the second hour wheel 61.
    In addition, by displaying the date, the element used is not limited to a display needle of the date 16; for example, it is also possible to rotate a date indicator using a tooth-by-tooth date display via a date indicator drive wheel 80, clearly indicating the date of the date indicator. the date indicator through a date window practiced in the dial 11.
    In addition, while according to the embodiment described above the jumper hours 62 is detachably coupled to the second hour wheel 61 using a fixing pin 77, such an implementation should not be interpreted in a limiting way.
    For example, as illustrated in FIG. 14, it is also possible to adopt a jumper hours (intermediate body according to the present invention) 90 in which a convex protrusion 91 is integrally formed on the body-sheet 76. Regarding this protrusion 91, it can be formed integrally by so-called "dowelling" or "protrusion molding" when, for example, the jumper hours 90 is formed by pressing.
    In the case of a jumper hours 90 thus formed, by fitting the protrusion 91 in the first mounting hole 72 of the second hour wheel 61, the jumper hour 90 can be removably coupled with the second hour wheel 61.
    In addition, as illustrated in FIG. 15, it is also possible to form a jumper hours (intermediate body according to the present invention) 95 in which a prominent member 96 bent at right angles is integrally formed with the body-sheet 76. In this case, when, by For example, the pressing operation of the jumper hour 95 is performed, the protruding member 96 is formed such that it is supported by the inner peripheral edge of the opening 97, the prominent member 96 being bent at right angles around from its base after the pressing operation.
    In the case of a jumper hours 95 thus formed, by fitting the protruding member 96 in the first mounting hole 72 of the second part of the hour wheel 71, it is possible to removably couple the jumper from hours 95 to the second hour wheel 61. In this case, in accordance with the configuration of the prominent member 96, the first mounting hole 72 may take the form of a slit, for example.
    In addition, even if as illustrated in FIG. 6, according to the embodiment described above, the star wheel 66 is fixed to the first part of the hour wheel 65 by interlocking, it is also possible, for example, to couple the star wheel 66 to the first part of the hour wheel 65 removably. This makes possible the unitary replacement of the first part of the hour wheel 65 and the star wheel 66, so that the maintenance operation is all the easier; at the same time, it is possible to relieve the user of the economic burden generated by the maintenance operations.
    In addition, as illustrated in FIG. 16, it is also possible to form the second part of the hour wheel 71 and the tubular body 70 separately, and to couple the second portion of the hour wheel 71 and the tubular body 70 removably one to the other using the mounting hole 71b formed in the second part of the hour wheel 71. This makes it possible to replace one by one parts such as the second part of the hour wheel 71, and the tubular body 70, such that the maintenance operation is further facilitated; at the same time, it is possible to relieve the user of the economic burden generated by the maintenance operations.
    As illustrated in FIG. 16, in the case where the second part of the hour wheel 71 and the tubular body 70 are formed separately, it is possible to fit the tubular body 70 inside the mounting hole 71b of the second part of the wheel hours 71 for mutual attachment, integrally coupling the second portion of the hour wheel 71 and the tubular body 70 to one another.
    As illustrated in FIG. 6, in the case where the second hour wheel 61 in which the second part of the hour wheel 71 and the tubular body 70 is integrally formed for example by machining, a relatively high level of technical skill is required in many cases to form the first mounting hole 72 in a precise position.
    On the contrary, as illustrated in FIG. 16, when the second part of the hour wheel 71 and the tubular body 70 are formed separately, only the second part of the hour wheel 71 can be formed for example by pressing a metal plate, so that the hole 71b and the first mounting hole 72 (including toothed portions 71a in some cases) can be formed easily and with great accuracy. Then, the tubular body 70 is fixed, for example, by being fitted into the mounting hole 71b of the second portion of the hour wheel 71, the second hour wheel 61 can thus be formed.
    In this way, by forming the second part of the hour wheel 71 and the tubular body 70 separately, it is possible to form the first mounting hole 72 beforehand easily and accurately, so that the production is facilitated, and can thus advantageously contribute to a reduction in component costs.
    In addition, while according to the embodiment previously described the gear body according to the present invention is applied to a wheel hours 44, such an implementation should not be interpreted in a limiting manner; the proposed architecture is also applicable to other gear parts of a timepiece.
    权利要求:
    Claims (6)
    [1]
    A gear body (44) comprising:a first gear (60) having a star wheel (66) provided with a plurality of detent portions (66b), and which is rotated about an axis by a rotational impulse force imparted by a power source; energy, and transmitted via a gear mechanism;a second gear (61) releasably coupled to the first gear operable in rotation about that axis;an intermediate body (62) disposed between the first gear (60) and the second gear (61), releasably engaged with the second gear (61), and having a jumper (75) provided with a restriction pawl tilting means (75a) for detachably engaging the detent portions (66b) and being elastically deformable,wherein the jumper (75) transmits the rotation of the first gear (60) to the second gear (61) through the mutual grip of the tilting restriction pawl (75a) with the detent portions (66b), and undergoing a elastic deformation to release the mutual engagement of the tilt restriction pawl (75a) with the snap portions (66b), thereby allowing the relative rotation of the second gear (61) relative to the first gear (60).
    [2]
    The gear body (44) according to claim 1, wherein the intermediate body (62) has a through-hole (76a) through which the star wheel (66) passes, and is equipped with a sheet-body (76) superimposed on the second gear (61) and removably engaged with the second gear (61); andthe jumper (75) is disposed on the inner face of the through hole (76a), and takes the form of a tongue whose proximal end portion is connected to the body-sheet (76), and whose end portion distal is free, the tilt restriction pawl (75a) being arranged at the distal end portion.
    [3]
    The gear body (44) of claim 1 or 2, wherein the first gear (60) is provided with a first gear portion engaged with the minute wheel (43); andthe second gear (61) has a tubular body with an hour hand (12) mounted thereon and a second gear portion engaged with a clock difference adjusting wheel (85).
    [4]
    4. Mechanism for adjusting a time difference comprising:a gear body (44) as claimed in claim 3; anda gear train for setting a time difference, rotating the time difference adjusting wheel (85).
    [5]
    5. Watch movement equipped with a claimed time difference adjusting mechanism according to claim 4.
    [6]
    6. Timepiece equipped with a watch movement as claimed in claim 5.
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    同族专利:
    公开号 | 公开日
    CN105425569A|2016-03-23|
    CH710118B1|2019-11-15|
    CN105425569B|2019-06-14|
    JP2016057269A|2016-04-21|
    JP6510781B2|2019-05-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP3474083A1|2017-09-25|2019-04-24|Seiko Epson Corporation|Timepiece movement and timepiece|JPS5918377Y2|1978-02-08|1984-05-28|
    CH657007GA3|1984-08-23|1986-08-15|Tissot Sa|
    CH685965B5|1994-02-23|1996-05-31|Nardin Ulysse Sa|horological piece which the hour hand can be an advance or backward by an hour steps.|
    JPH0990061A|1995-09-27|1997-04-04|Citizen Watch Co Ltd|Clock with correction of difference in time|
    CN200972581Y|2006-11-24|2007-11-07|番禺明珠星钟厂|Watch movement|
    DE602007010423D1|2007-04-04|2010-12-23|Eta Sa Mft Horlogere Suisse|Gear for clockwork and device for correcting a display mechanism for a clock with such a gear|JP6962101B2|2017-09-25|2021-11-05|セイコーエプソン株式会社|Watch movements and watches|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2014186442A|JP6510781B2|2014-09-12|2014-09-12|Gear body, time difference correction mechanism, movement for watch and watch|
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