• 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:
    It is proposed a date indicator drive wheel, a calendar mechanism, a movement and a timepiece. The date indicator drive wheel includes a date gear (31) to which a rotational force is transmitted from a gear wheel rotating in a predetermined cycle and which rotates about a first axis (C1); a date finger (36) which is adapted to be in engagement and disengaged from a tooth (22) of the date indicator (20) and a control portion (45); ) regulating movement in the peripheral direction of the date gear (31) and movable in the radial direction of the date gear (31); and an elastic portion (41) resiliently supporting the date finger (36), wherein, by rotation of the date gear (31), the date finger (36) is engaged with the portion of control (45) for causing the resilient portion (41) to store elastic force, and then moves in the radial direction to disengage from the control portion (45) to release the elastic force and to engage the tooth (22) of the date indicator (20).
    公开号:CH712222A2
    申请号:CH00281/17
    申请日:2017-03-08
    公开日:2017-09-15
    发明作者:Kimura Reiji
    申请人:Seiko Instr Inc；
    IPC主号:
    专利说明:

    Description
    BACKGROUND OF THE INVENTION 1. Technical Field [0001] The present invention relates to a date indicator drive wheel, a calendar mechanism, a movement and a timepiece. 2. PRIOR ART [0002] Examples of mechanical timepieces equipped with a calendar mechanism are timepieces which are disclosed in Patent Document 1 (Japanese Patent No. 3,081,992) and in the patent document 2 (JP-A-2004-170271). However, in the calendar mechanism of the timepiece disclosed in patent document 1, the maneuver of effecting a date change by passing a date indicator takes place over a long period of more than one year. hour. In the timing mechanism of the timepiece disclosed in patent document 2, the maneuver of effecting a date change requires approximately 30 minutes, if not such a long duration of more than one hour.
    When it takes time to effect the date change as described above, part of the date displayed on the date indicator is offset from the date window, resulting in a state said to half an eye. Thus, there is room for improvement on this point.
    In this regard, there is known a timepiece described, for example, in the patent document 3 (JP-A-2007-24 900) and which is equipped with a calendar mechanism able to perform instantly. a date change.
    The calendar mechanism of this timepiece comprises a date indicator drive wheel performing a turn within 24 hours, a cam rotatably mounted on the date indicator drive wheel and having an eccentric shaft inserted into an arcuate aperture formed in the date indicator drive wheel, a rotational calendar passage member about an eccentric axis of the cam and having a date pass finger able to come into operation; contact with a tooth of the date indicator, a return spring applying a fixed rotational bias to the calendar passage member, a lever having a roller engaging the outer peripheral surface of the cam, and a spring instant jump spring (a spring for accumulating the force needed to instantly turn the date indicator) pressing this roller against the cam.
    In the calendar mechanism above, when the date indicator drive wheel rotates, the point of contact between the lever roller and the cam gradually undergoes a transition from a low portion to a portion high of the cam, with this rotation, so that power can be stored in the instantaneous jump spring. And, as the rotation progresses further and about midnight arrives, the above-mentioned point of contact undergoes a transition from the uppermost portion to the lowest portion of the cam. As a result, the spring force of the instant jump spring that has been stored can be released at once, thereby rotating the cam and calendar feed member abruptly. As a result, with the day pass, the date indicator can be rotated by one day, allowing the display of the date indicator to be changed instantly by one day.
    In the calendar mechanism disclosed in the patent document 3, it is necessary to provide a lever, a cam, a calendar passage member, a return spring, an instantaneous jump spring, etc., which it results in a rather large number of components and a complicated constitution. In addition, the lever and the instant jump spring are also located in the region on the outer side of the date indicator drive wheel, with the result that there is an increase in motion and it is to be feared the degree of freedom in the arrangement of the components is limited. Thus, the technique of the prior art leaves room for progress in terms of degree of freedom on the arrangement by means of space saving.
    SUMMARY OF THE INVENTION
    The present invention has been made in view of the above problems of the prior art. An object of the present invention is to provide a date indicator drive wheel, a calendar mechanism, a movement and a timepiece which are of simple constitution and which help to obtain progress in terms of degree of freedom on the arrangement, by means of a saving of space.
    In order to achieve the above object, it is proposed, according to the present invention, a date indicator drive wheel comprising: a date gear at which a rotational force is transmitted from a a toothed wheel rotating in a predetermined cycle and rotating about a first axis; a date finger which is intended to be able to engage and disengage with a date indicator tooth and a control portion controlling movement in the peripheral direction of the toothed wheel of the date wheel; date and which can move in the radial direction of the date gear; and an elastic portion resiliently supporting the date finger, wherein, by rotation of the date gear, the date finger is engaged with the control portion to cause the elastic portion to store elastic force, and then moves in the radial direction to disengage from the control portion to release the elastic force and to come into contact with the tooth of the date indicator.
    According to the present invention, there is provided a date gear, a movable date finger in the radial direction of the date gear and an elastic portion resiliently supporting the date finger, and the date finger is moved. away from the control part (also called the regulating part) to release the elastic force and comes into contact with the tooth of the date indicator, so that, in comparison with the prior art, it is possible to rotate the date indicator with a smaller number of components and a simpler constitution, making it possible to make the day pass instantly. In addition, the date finger moves in a radial direction to separate from the control portion and releases the elastic force and, at the same time, comes into contact with the tooth of the date indicator, so that by compared with the case where the date finger is provided so as to be movable in the axial direction, a reduction in the thickness of the date indicator drive wheel can be obtained. Thus, it is possible to propose a date indicator drive wheel which makes it possible to obtain progress in terms of degree of freedom on the arrangement, by means of space saving.
    In addition, a protrusion is provided on a component among the date gear and the date finger; a recess is provided on the other one of the date gear and the date finger; the protrusion enters the recess, whereby the date finger is mounted movably with respect to the date gear; and the elastic portion extends along the circumferential direction of the date gear, one end of this elastic portion being secured to the date gear, the other end of the elastic portion being secured to the date finger.
    According to the present invention, the elastic portion extends along the circumferential direction of the date gear, one of its ends being connected to the date gear, its other end being connected to the gear wheel. date, so that the elastic portion is not disposed on the outer side of the date indicator contrary to the prior art, and one can arrange the elastic portion on the inner side of the date gear. Thus, it is possible to provide a date indicator drive wheel to achieve progress in terms of degree of freedom by means of space saving.
    In addition, the date finger is mounted on the date gear so as to rotate about a second axis parallel to the first axis.
    According to the present invention, the date finger is mounted on the date gear so as to be pivotable about the second axis parallel to the first axis, so that, by a rotation of the date gear around from the first axis, the date finger can move in the radial direction of the date gear. Thus, in comparison with the case where the date finger is provided to be movable in the axial direction, a reduction in the thickness of the date indicator drive wheel can be achieved.
    In addition, by means of a rotation of the date gear about the first axis, the date finger can move in the radial direction of the date gear and can be engaged and disengaged from with the control part. As a result, after the accumulation of elastic force in the elastic portion, the date finger moves in the radial direction and is separated from the regulating portion to release the elastic force, and at the same time can come into operation. contact with the tooth of the date indicator, so that the date indicator can be rotated instantly to make a day pass.
    In addition, the projection enters the hollow, whereby the date finger is mounted on the date gear, so that even when an external shock is applied in the state where with the date finger is engaged with the control part, the movement of the date finger in the radial direction is defined by the projection and the recess. Thus, a higher date indicator drive wheel with respect to impact resistance can be provided.
    In addition, the date gear has a protrusion, and a sliding contact portion which comes into sliding contact with a proximal end of the date finger to define the movement of the date finger in the radial direction and which, when the date gear rotates by a predetermined angle, releases the sliding contact with the proximal end to allow the date finger to move in the radial direction, where the date finger includes the hollow extending at the level of the proximal end, along the peripheral direction.
    According to the present invention, there is provided a sliding contact portion which determines the movement of the date finger in the radial direction and which, when the date gear rotates by a predetermined angle, releases the sliding contact with the proximal end to allow the date finger to move in the radial direction, so that, by rotation of the date gear by a determined angle about the first axis, the date finger can move according to the radial direction of the date gear to separate from the control part. As a result, the date finger can separate from the control portion to release the elastic force and can come into contact with the tooth of the date indicator, so that the date indicator can be instantly rotated to perform a date pass.
    In addition, at the proximal end, the date finger is provided with a recess extending in the peripheral direction, so that the date finger can be arranged to be movable in the direction radial of the date gear without resulting in an increase in the size of the date gear in the radial direction. Thus, it is possible to provide a date indicator drive wheel for obtaining progress in terms of degree of freedom on the arrangement, by means of a saving of space.
    In addition, the date gear is provided with the sliding contact portion determining the movement of the date finger in the radial direction, so that even when an external impact is applied in the state where the finger of the date is engaged with the control part, the movement of the date finger in the radial direction is regulated by the projection, the hollow and the sliding contact portion. Thus, it is possible to provide a date indicator drive wheel superior in impact resistance.
    In addition, the date finger has a projection; the date gear comprises a hollow extending in the peripheral direction; and the recess has a curved portion having a predetermined curvature about the first axis, and a guide-finger portion extending in the radial direction, upstream of the curved portion in the direction of rotation of the date gear.
    According to the present invention, the date gear comprises a recess extending along the peripheral direction, so that the date finger can be arranged to be movable in the radial direction of the toothed wheel. date without resulting in an increase in the size of the date gear in the radial direction. Thus, it is possible to provide a date indicator drive wheel helping to achieve progress in terms of degree of freedom on the arrangement, by means of space saving.
    In addition, the hollow has the curved portion having a predetermined curvature about the first axis, and a guide-finger portion extending in the radial direction of the upstream side of the curved portion in the direction of rotation of the date gear, so that the date gear rotates and the protrusion of the date finger is guided by the guide-finger portion, whereby it is possible to move the date finger in the radial direction. As a result, the date finger is separated from the control portion to release the spring force and can come into contact with the tooth of the date indicator so that the date indicator can be rotated. instantly to make a day pass.
    In addition, the date finger is mounted on the date gear by causing the projection to enter the recess extending in the peripheral direction, so that even when an external shock is applied in the state where the date finger is engaged with the control part, the movement of the date finger in the radial direction is controlled. Thus, it is possible to provide a higher date indicator drive wheel with respect to impact resistance.
    In addition, the date finger and the elastic portion are in one piece with each other.
    According to the present invention, the date finger and the elastic portion are formed integrally with each other, so that further reduction of the number of components can be achieved. Thus, it is possible to provide a date indicator drive wheel helping to achieve progress in terms of degree of freedom on the arrangement, by means of space saving.
    In addition, according to the present invention, there is provided a calendar mechanism comprising a date indicator drive wheel as defined above, the date indicator, the control part, and a jumper of date that can be engaged and disengaged with a tooth of the date indicator.
    According to the present invention, it is proposed the date indicator drive wheel able to obtain a progress in terms of degree of freedom on the arrangement by means of a saving of space, so that it is possible to provide a small, higher timing mechanism with respect to the degree of freedom in the arrangement. In addition, it is possible to provide a higher timing mechanism for impact resistance and without a malfunction.
    The control part is provided on the date jumper.
    According to the present invention, the control part is provided on the date jumper, which is an existing component, so that it is possible to propose the control part without it resulting in an increase in the number of components. Thus, it is possible to provide a small, higher timing mechanism with respect to the degree of freedom in the arrangement.
    In addition, according to the present invention, there is provided a movement comprising a calendar mechanism as defined above.
    In addition, according to the present invention, there is provided a timepiece comprising a movement as defined above.
    According to the present invention, it is possible to provide a small movement and a timepiece superior in terms of the degree of freedom on the arrangement. In addition, it is possible to provide a movement and a timepiece superior for shock resistance and without a malfunction.
    According to the present invention, there is provided the date gear, the date finger movable in the radial direction of the date gear, and an elastic portion elastically supporting the date finger, in which the finger The date indicator is separated from the control portion to release the elastic force and comes into contact with the tooth of the date indicator so that, in comparison with the prior art technique, the date indicator is manipulated. in rotation by means of a smaller number of components and a simpler constitution, and by making it possible for the daytime passage to be effected instantaneously. In addition, the date finger is moved in the radial direction and is separated from the control portion to release the elastic force and to come into contact with the tooth of the date indicator, so that, in comparison with the case where the date finger is provided so as to be movable in the axial direction, a reduction in the thickness of the date indicator drive wheel can be achieved. Thus, it is possible to provide a date indicator drive wheel to obtain a progress in terms of degree of freedom on the arrangement, by means of a saving of space.
    BRIEF DESCRIPTION OF THE DRAWINGS
    [0035]
    Fig. 1 is an external view of a timepiece according to one embodiment.
    Fig. 2 is a plan view of a movement including the calendar mechanism.
    Fig. 3 is an exploded view, in perspective, of a date indicator drive wheel according to a first embodiment.
    Fig. 4 is an enlarged plan view of a portion around the date indicator drive wheel according to the first embodiment and represents an initial state of engagement of a date finger portion with a regulation portion.
    Fig. 5 is an enlarged plan view of a portion around the date indicator drive wheel according to the first embodiment and illustrates the state after a moment has elapsed after engagement. the date finger portion with the control part.
    Fig. 6 is an enlarged plan view of the portion around the date indicator drive wheel according to the first embodiment and illustrates the state immediately prior to the release of the state in which the finger portion of date is engaged with the control party.
    Fig. 7 is an enlarged plan view of the portion around the date indicator drive wheel according to the first embodiment and illustrates the state after the release of the state in which the date finger portion. is engaged with the control party.
    Fig. 8 is an exploded view, in perspective, of a date indicator drive wheel according to a second embodiment.
    Fig. 9 is an enlarged plan view of a portion around the date indicator drive wheel according to the second embodiment and illustrates an initial state of engagement of the date finger portion with the control part.
    Fig. 10 is an enlarged plan view of the portion around the date indicator drive wheel according to the second embodiment and illustrates a state after a moment has elapsed after engagement of the finger portion with the control part.
    Fig. 11 is an enlarged plan view of the portion around the date indicator drive wheel according to the second embodiment and illustrates a state immediately prior to the release of the state in which the date finger portion is engaged with the control party.
    Fig. 12 is an enlarged plan view of the portion around the date indicator drive wheel according to the second embodiment and illustrates the state after the release of the state in which the date finger portion is engaged with the control party.
    Fig. 13 is an exploded view, in perspective, of a date indicator drive wheel according to a third embodiment.
    Fig. 14 is an enlarged plan view of a portion around the date indicator drive wheel according to the third embodiment and illustrates an initial state of engagement of the date finger portion with the control part.
    Fig. 15 is an enlarged plan view of the portion around the date indicator drive wheel according to the third embodiment and illustrates a state after a moment has elapsed after engagement with the date indicator drive wheel. date finger portion with the control part.
    Fig. 16 is an enlarged plan view of the portion around the date indicator drive wheel according to the third embodiment and illustrates a state immediately prior to the release of the state in which the date finger portion. is engaged with the control party.
    Fig. 17 is an enlarged plan view of the portion around the date indicator drive wheel according to the third embodiment and illustrates a state after the release of the state in which the date finger portion is in touch with the control party.
    DESCRIPTION OF THE EMBODIMENTS
    In the following, an embodiment of the present invention will be described with reference to the drawings.
    In what follows, a mechanical wristwatch (which corresponds to what is called a "timepiece" in the claims, in what follows, this mechanical wristwatch will simply be called "the timepiece And a motion will be described, whereupon a date indicator drive wheel and a calendar mechanism according to one embodiment will be described in detail.
    Timepiece [0038] A mechanical assembly including the driving part of the timepiece is called as a whole a "movement". A complete product obtained by mounting a dial and hands on this movement and putting it all inside a timepiece box will be called a "complete timepiece". Of the two sides of a plate forming a base plate of the timepiece, the side where the glass of the timepiece box is located, that is to say the side where the dial is located. will be called the "back side" of the movement. On both sides of the platen, the side where the box bottom of the timepiece box, i.e. the opposite side of the dial, is located will be called the "front side" of the movement.
    FIG. 1 is an external view of a timepiece according to one embodiment. In the following description, the clockwise direction in the plan views from FIG. 1 will be called the CW direction, while the counterclockwise direction will be called the CCW direction.
    As can be seen in FIG. 1, within a timepiece box 3 consisting of a box bottom (not shown) and a glass 2, the complete timepiece 1 according to the present embodiment comprises a movement 10, as well as a dial 11 having a graduation or the like for indicating time information, and that needles comprising a 12 hour hand for indicating the hour, a minute hand 13 for indicating the time, minutes, and a seconds hand 14 to indicate the seconds. The dial 11 is pierced with a window of days 11a exposing a letter of day 21 which is a number indicating the day. Because of this constitution, the timepiece 1 can display the time and day.
    FIG. 2 is a plan view of a movement provided with a calendar mechanism.
    As can be seen in FIG. 2, in the movement 10 is arranged at least one regulator / escapement mechanism (not shown) comprising a balance-spring, an escape wheel, an anchor, etc., and a front gear train comprising a mobile second, a mobile average, a mobile center, a barrel of movement, a wheel hours 16, etc. The seconds hand 14 (see Fig. 1) is mounted at the end, rear side, of the second hand and makes a turn in 60 seconds in the CW direction about the center axis O. minute hand 13 (see Fig. 2) is mounted on the end, rear side, of the center wheel and makes a turn in 60 minutes in the CW direction, around the center axis O.
    The hour wheel 16 meshes with the movement barrel (not shown) serving as a power source via the gear train. The hour wheel 16 is rotated by the power transmitted from the motion cylinder. The hour hand 12 (see Fig. 1) is mounted at the rear end of the hour wheel 16 and rotates in 12 hours in the CW direction about the center axis O. The rotation of the hour wheel is transmitted to a date indicator drive wheel 30 of a calendar mechanism 50 described below, via an intermediate wheel 17 for example.
    First Embodiment, Calendar Mechanism [0044] As can be seen in FIG. 2, the calendar mechanism 50 includes a date indicator 20, the date indicator drive wheel 30 and a date jumper 60.
    The date indicator 20 is a ring-type element rotatably mounted on a plate 5. On the surface of the date indicator 20 there are provided day letters 21 (see Fig. 1) representing days 1 to 31, along the ring road. Examples of a method of making day letters 21 include printing, stamping and stamping; however, there is no particular limitation on this subject. The date indicator 20 rotates in the CW direction. The letters of the day 21 are arranged in succession according to the direction of rotation of the date indicator 20.
    Teeth 22 are provided on the front side of the movement 10 and on the inner peripheral surface of the date indicator 20. A plurality of teeth 22 of the date indicator 20 are formed at peripheral intervals, so as to protrude inward in the radial direction.
    The date jumper 60 includes a gear train plate 7 having the shape of a plate carrying the gear train, and a portion forming date arm 63 capable of elastic deformation. The gear train plate 7 and the date arm portion 63 are integral with each other. The date arm portion 63 adjusts the position of the date indicator 20 in the direction of rotation and assists the rotation of the date indicator 20. A proximal end 61 of the date arm portion 63 is attached to the date indicator 20. platinum 5, while its distal end 62 is arranged as a free end. The date arm portion 63 biases the distal end 62 toward the side of the date indicator 20. The distal end 62 of the date arm portion 63 may be engaged with the teeth 22 of the indicator. date 20 or released, and, by the engagement, adjusts the rotation of the date indicator 20. As a result, the date indicator 20 can turn step by step with the same angular pitch as the angle step (approximately 11.6 °) of the teeth 22.
    FIG. 3 is an exploded view, in perspective, of the date indicator drive wheel 30 according to the first embodiment.
    As can be seen in FIG. 3, the date indicator drive wheel 30 includes a date gear 31, a date finger 36 and an elastic portion 41.
    The date gear 31 is provided so as to be rotatable about a first axis C1, by the rotational force transmitted from the hour wheel 16. The date gear 31 makes one turn per day to a fixed speed, in the CW direction, around the first axis C1.
    A projection 32 is projecting from the date gear 31, at an eccentric position relative to the first axis C1. The projection 32 is shaped so as to have a columnar shape around a second axis C2 parallel to the first axis C1.
    A proximal end 37 of the date finger 36 is connected to the toothed date wheel 31. A recess 33 corresponding to the projection 32 is formed at the proximal end 37 of the date wheel 36. The finger 36 is connected to the date gear 31 so as to be rotatable about the second axis C2, the projection 32 being inside the recess 33. Although it is shaped like a through hole in the present mode of realization, the hollow 33 may also be a blind hole. In addition, it is also possible to choose a constitution in which the date finger 36 is provided with a projection and in which the date gear 31 is provided with a recess.
    The date finger 36 is movable with the date gear 31, in the peripheral direction of the date gear 31. In addition, by pivoting about the second axis C2 eccentric with respect to the first axis C1 of the wheel Date tooth 31, the date finger 36 is also movable in the radial direction of the date gear 31.
    The elastic portion 41 resiliently supports the date finger 36. The elastic portion 41 is shaped to have an arcuate shape and extends along the circumferential direction of the toothed gear of date 31. One end of the elastic portion 41 is connected to the date gear 31, while its other end is connected to the distal end 38 of the date finger 36.
    FIG. 4 is an enlarged plan view of a portion around the date indicator drive wheel according to the first embodiment and illustrates the state in which the date finger portion is engaged with a portion control.
    As shown in FIG. 4, near the date indicator drive wheel 30 is provided a control portion 45 engaged with the distal end 38 of the date finger 36. The control portion 45 according to the present embodiment is provided on the gear train plate 7 of the date jumper 60 covering a portion of the date indicator drive wheel 30. The control portion 45 is formed by making a portion of the plate carry a gear train. gear 7 protrudes towards the side of the first axis C1.
    When the date finger 36 is engaged with the control portion 45, while the date gear 31 is rotating, the movement of the date gear 31 in the peripheral direction is regulated in the state in which the date finger 36 is movable in the radial direction of the date gear 31.
    Operation [0058] The operation of the calendar mechanism 50 provided with the date indicator drive wheel 30 according to the first embodiment will now be described.
    Figs. 5-7 are enlarged plan views of a portion around the date indicator drive wheel according to the first embodiment. Figs. 4 to 7 are arranged in a temporal succession in this order. In what follows, the operation of the calendar mechanism 50 will be described when the change is made from the 30th day to the 31st day.
    First, as shown in FIG. 1, the whole letter of day 21 which is "30" and which indicates the 30th day is moved to the window of days 11a. Power from a power source (not shown) such as a motor and a motion barrel is transmitted from the hour wheel 16 to the date indicator drive wheel 30. The drive wheel Date indicator 30 is rotated at a speed of one revolution per day.
    Before the date display changing maneuver begins, the date gear 31 is rotated in the CW direction around the first axis C1. The elastic portion 41 and the date finger 36 carried by the date gear 31 rotate with the date gear 31, in the peripheral direction of the date gear 31.
    As shown in FIG. 4, when the previous moment of 6 hours arrives the moment, for example, of the maneuver of changing the date display (around 18 hours), the distal end 38 of the date finger 36 abuts against the control portion 45 and is engaged therewith. As a result, the distal end 38 of the date finger 36 is controlled in its movement in the circumferential direction of the date gear 31.
    Then, as shown in FIG. 5, the date gear 31 continues to rotate about the first axis C1. The distal end 38 of the date finger 36 has its movement determined in the peripheral direction, by engagement with the control portion 45.
    The proximal end 37 of the date finger 36 rotates in a radius corresponding to the amount of eccentricity of the second axis C2, the projection 32 of the date gear 31 rotating about the first axis C1. The projection 32 of the date gear 31 makes a sliding rotation within the recess 33 of the date finger 36.
    The hollow 33 of the proximal end 37 of the date finger 36 moves in the peripheral direction, in a radius corresponding to the distance between the first axis C1 and the second axis C2. The distal end 38 of the date finger 36 in engagement with the control portion 45 moves toward, for example, the inner side (which is the outer side in some cases) in the radial direction of the date gear 31, due to the displacement of the proximal end 37.
    An end of the elastic portion 41 connected to the date gear 31 moves with the date gear 31, in the direction of rotation. The other end of the elastic portion 41, connected to the distal end 38 of the date finger 36, is maintained, with the date finger 36, in a position corresponding to the control portion 45. Due to the rotation of the With the date gear 31, the elastic portion 41 undergoes elastic deformation so that the two ends approach one another and a diameter reduction occurs, whereby elastic force is stored.
    Then, as shown in FIG. 6, the moment immediately before 24 hours arrives due to the passage of time, the amount of displacement of the distal end 38 of the date finger 36 in the radial direction of the date gear 31 increases to the limit of a range for engaging the control portion 45. The deformation of the elastic portion 41 becomes maximum and the elastic force is accumulated in the elastic portion 41 to a maximum level.
    As shown in FIG. 7, when a predefined time (e.g. around midnight) of the 30th day arrives, the amount of inward movement of the distal end 38 of the date finger 36 in the radial direction of the date gear 31 exceeds the limit of the range allowing to be engaged with the control part 45.
    Then, the state of the distal end 38 of the date finger 36 engaged with the control portion 45 is released and the date finger is moved away from the control portion 45. The elastic force accumulated in the part elastic 41 is released and the distal end 38 of the date finger 36 is urged to come into contact with the tooth 22 of the date indicator 20.
    The tooth 22 of the date indicator 20 is strongly pressed in the direction of rotation, by the distal end 38 of the date finger 36. When the tooth 22 of the date indicator 20 is pressed strongly according to the direction of rotation, by the distal end 38 of the date finger 36, the date indicator 20 rotates a tooth, against the retaining force of the date jumper 60 relative to the tooth 22. This results an instant day supply is executed and the day letter "31" is displayed in the day window 11 a.
    After that, the elastic portion 41 and the date finger 36 are released and they rotate together with the date gear 31.
    From this, the calendar mechanism 50 repeats the operation described above.
    In the date indicator drive wheel 30 according to the present embodiment there is provided a date gear 31, a date finger 36 movable in a radial direction of the date gear 31, as well as an elastic portion 41 resiliently supporting the date finger 36, wherein the date finger 36 is moved away from the control portion 45 to release the elastic force and comes into contact with the tooth 22 of the indicator. date 30, so that, by comparison with the prior art technique, it is possible to rotate the date indicator 20 with a smaller number of components and by means of a simpler constitution, making it possible to instantly bring the day's supply. On the other hand, the date finger 36 moves inwardly in the radial direction to be moved away from the control portion 45 to release the spring force and comes into contact with the tooth 22 of the indicator of date 20, so that, in comparison with the case where the date finger 36 is provided so as to be movable in the axial direction, it is possible to obtain a reduction in the thickness of the drive wheel of The date indicator 30. Thus, a date indicator drive wheel 30 can be provided to achieve progress in terms of the degree of freedom of the arrangement due to the space saving.
    In addition, the elastic portion 41 extends along the peripheral direction of the date gear 31, one of its ends being connected to the date gear 31 while its other end being connected to the date finger 36, so that it is possible to arrange the elastic portion 41 of the inner side of the date gear 31 without disposing the elastic portion 41 of the outer side of the date indicator 20, contrary to the technique of the prior art. Thus, a date indicator drive wheel 30 can be provided to achieve progress in terms of degree of freedom in the arrangement by means of space saving.
    In addition, the date finger 36 is mounted on the date gear 31 so as to be pivotable about the second axis C2 parallel to the first axis C1, so that the date finger 36 can move in the direction radial of the date gear 31, by a rotation of the date gear 31 around the first axis C1. Thus, in comparison with the case where the date finger 36 is provided to be movable in the axial direction, a reduction in the thickness of the date indicator drive wheel 30 can be achieved.
    In addition, by a rotation of the date gear 31 around the first axis C1, the date finger 36 can move in the radial direction of the date gear 31 and can be engaged with the control portion 45 and disengage therefrom. As a result, after an elastic force buildup in the elastic portion 41, the date finger 36 moves inwardly in the radial direction and is moved away from the control portion 45 to release the elastic force and at the same time may come into contact with the tooth 22 of the date indicator 20, so that it is possible to rotate the date indicator 20 instantaneously to carry out the day feed.
    In addition, the projection 32 enters the recess 33, whereby the date finger 36 is mounted on the date gear 31 so that even in the case where an external shock is applied in the state where the date finger is engaged with the control portion 45, the movement of the date finger 36 in the radial direction is defined by the protrusion 32 in the hole 33. Thus, it is possible to propose an indicator driving wheel of upper date for shock resistance.
    Furthermore, in the calendar mechanism 50 according to the present invention, there is provided a date indicator drive wheel 30 for achieving progress in terms of degree of freedom on the arrangement by means of space saving, so that a small, higher timing mechanism 50 can be provided in terms of the degree of freedom in the arrangement. In addition, there can be provided a calendar mechanism 50 without a malfunction and superior in impact resistance.
    In addition, the control portion 45 is provided on the gear train plate 7 of the date jumper 60, which is an existing component, so that a regulating portion 45 can be provided without generating an increase. number of components. Progress can be achieved in terms of the degree of freedom in the arrangement. Thus, one can provide a small calendar mechanism 50 greater in terms of degree of freedom on the arrangement.
    In addition, in the movement 10 and the timepiece 1 of the present embodiment, it is possible to propose the small movement 10 and the timepiece 1 which are greater in terms of degrees of freedom on the arrangement. . In addition, it can be proposed the movement 10 and the timepiece 1 which are superior for the impact resistance and free of a malfunction.
    Second movement [0081] FIG. 8 is an exploded view, in perspective, of a date indicator drive wheel according to a second embodiment.
    As shown in FIG. 8, the date indicator drive wheel 30 includes a date gear 31, a date finger 36 and an elastic portion 41.
    The date gear 31 is provided to be rotatable about the first axis C1 by the rotational force transmitted from the hour wheel 16. The date gear 31 rotates daily at a fixed speed. , in the CW direction, around the first axis C1.
    On the surface of the date gear 31 is provided a columnar projection 32 having its center at a position different from the first axis C1. At the proximal end 37 of the date finger 36 there is provided the slot 33 of the slot type, in which the projection 32 penetrates to slide therein, so as to extend in the circumferential direction of the date gear 31 The depression 33 has a predetermined curvature about the first axis C1.
    In addition, a sliding contact portion 34 coming into sliding contact with the proximal end 37 of the date finger 36 protrudes from the date gear 31. The sliding contact portion 34 comes into sliding contact with the end. proximal 37 of the date finger 36 to adjust the movement of the date finger 36 to the inner side in the radial direction. The sliding contact portion 34 is configured with an arcuate shape in a plan view and, as the date gear 31 rotates by a predetermined angle, its sliding contact with the date finger 36 is released, allowing the finger of date 36 to move to the inner side in the radial direction.
    The sliding contact portion 34 has an arcuate portion 34a having the first axis C1 as a center and a modified portion 34b, which is modified from the arcuate portion 34a. The date gear 31 and the date finger 36 rotate relative to make a transition from the arcuate portion 34a to the modified portion 34b, whereby the sliding contact of the sliding contact portion 34 with the date finger 36 is released, allowing the date finger 36 to move to the inner side in the radial direction of the date gear 31.
    The elastic portion 41 elastically supports the date finger 36. The elastic portion 41 is shaped to have an arcuate shape and extends along the direction of the peripheral direction of the toothed gear of date 31. A end of the elastic portion 41 is connected to the date gear 31 and the other end is connected to the date finger 36. In the present embodiment, the date finger 36 and the elastic portion 41 are integrally formed. with each other.
    As in the first embodiment, the control portion 45 engaged with the distal end 38 of the date finger 36 is provided around the date gear 31 (see Fig. 2). The control portion 45 is provided on the gear train plate 7 adjacent to the date gear 31 in the axial direction and projects on the side of the first axis C1. The date finger 36 is engaged with the control portion 45, whereby its movement along the peripheral direction of the date gear 31 is controlled.
    For the rest, this embodiment is of the same constitution as the first embodiment. Operation [0090] The operation of the calendar mechanism 50 having the date indicator drive wheel 30 according to the second embodiment will now be described.
    Figs. 9 to 12 are enlarged plan views showing the portion around the date indicator drive wheel according to the second embodiment; figs. 9 to 12 are arranged in a sequential succession in this order.
    Before the change of the date display operation begins, the date gear 31 is rotated in the CW direction around the first axis C1. The elastic portion 41 and the date finger 36 carried by the date gear 31 rotate with the date gear 31, in the peripheral direction of the date gear 31.
    As shown in FIG. 9, six hours before the start, for example, of the date display changing maneuver (i.e. around 18 hours), the distal end 38 of the date finger 36 abuts against the control portion 45 and is engaged therewith. As a result, the distal end 38 of the date finger 36 is controlled for movement in the peripheral direction of the date gear 31.
    Then, as shown in FIG. 10, the date gear 31 continues to rotate about the first axis C1. The distal end 38 of the date finger 36 is controlled for movement in the peripheral direction by the state in engagement with the control portion 45.
    With the rotation of the date gear 31, the projection 32 of the date gear 31 moves within the recess 33 at the proximal end 37 of the date finger 36. In addition, the proximal end 37 of the date finger 36 comes into sliding contact with the arcuate portion 34a provided on the sliding contact portion 34. The recess 33 and the arcuate portion 34a have arcuate shapes each having the first axis C1 as the center. Thus, the proximal end 37 of the date finger 36 is substantially held in a fixed position in the radial direction.
    One end of the elastic portion 41 moves with the date gear 31, according to the direction of rotation. The other end of the elastic portion 41 is held, with the date finger 36, at a position corresponding to the control portion 45. With a rotation of the date gear 31, the two ends of the elastic portion 41 s approach to each other and the elastic portion undergoes elastic deformation so as to have a decrease in diameter in order to store elastic force.
    Then, as shown in FIG. 11, when, for example, the instant immediately before midnight arrives with the passage of time, the projection 32 of the date gear 31 abuts against the end of the recess 33. In addition, the proximal end 37 of the date finger 36 is moved along the modified portion 34b of the sliding contact portion 34. As a result, the distal end 38 of the date finger 36 engaged with the control portion 45 moves to the inner side according to the radial direction of the date gear 31. At this time, the distal end 38 of the date finger 36 is increased in the amount of displacement in the radial direction of the date gear 31 to the limit of the range allowing the state in engagement with the control portion 45. The deformation of the elastic portion 41 is maximum and the elastic force is accumulated in the elastic portion 41 to a maximum level.
    As shown in FIG. 12, when a predetermined time (for example around midnight) of the 30th day arrives, the amount of which the distal end 38 of the date finger 36 is moved towards the inner side in the radial direction of the toothed wheel 31 is beyond the range allowing a state in engagement with the control portion 45.
    Then, the cooperation of the distal end 38 of the date finger 36 with the control portion 45 is released and the date finger is moved away from the control portion 45. The elastic force accumulated in the elastic portion 41 is released and the distal end 38 of the date finger 36 is urged to be brought into contact with the tooth 22 of the date indicator 20.
    The tooth 22 of the date indicator 20 is strongly pressed in the direction of rotation by the distal end 38 of the date finger 36. When the tooth 22 of the date indicator 20 is strongly pressed in the direction of rotation, by the distal end of the date finger 36, the date indicator 20 rotates a tooth against the retaining force of the date jumper 60 relative to the tooth 22. As a result, instant day pass is executed and the day letter "31" is displayed in the window of days 11a.
    After that, the elastic portion 41 and the date finger 36 are released and rotate together, with the date gear 31.
    From this, the calendar mechanism 50 according to the second embodiment repeats the operation described above.
    In the date indicator drive wheel 30 of the second embodiment, there is provided a sliding contact portion 34 which determines the movement of the date finger 36 towards the inside in the radial direction and which, when the date gear 31 rotates by a predetermined angle, releases the sliding contact with the proximal end 37 and allows the date finger 36 to move to the inner side in the radial direction, so that when the wheel Date tooth 31 rotates by a predetermined angle around the first axis C1, the date finger 36 moves to the inner side in the radial direction of the date gear 31 and can separate from the control portion 45. As a result, the date finger 36 separates from the control portion 45 and releases the elastic force and, at the same time, can come into contact with the tooth 22 of the date indicator 20, so that it can be real a day shift by means of an instantaneous rotation of the date indicator 20.
    In addition, at the proximal end of the date finger 36, there is provided a recess 33 extending in a peripheral direction, so that the date finger 36 can be arranged to be movable according to the radial direction of the date gear 31 without involving an increase in the size of the date gear 31 in the radial direction. Thus, a date indicator drive wheel 30 can be provided to achieve progress in terms of degree of freedom in the arrangement by means of space saving.
    In addition, the date gear 31 has the sliding contact portion 34 determining the movement of the date finger 36 towards the inner side in the radial direction, so that even when an external shock is applied in the state where the date finger 36 is engaged with the control portion 45, the movement of the date finger 36 in the radial direction is determined by the projection 32, the recess 33 and the sliding contact portion 34. Thus, provide a higher date indicator drive wheel with respect to impact resistance.
    In addition, in the date indicator drive wheel 30 according to the second embodiment, the date finger 36 and the elastic portion 41 are made in one piece with each other, so that a further reduction in the number of components can be achieved. Thus, a date indicator drive wheel 30 can be provided to achieve progress in terms of degree of freedom on the arrangement by means of space saving.
    Third Embodiment [0107] FIG. 13 is an exploded view, in perspective, of a date indicator drive wheel according to the third embodiment.
    As shown in FIG. 13, the date indicator drive wheel 30 includes the date gear 31, the date finger 36 and the elastic portion 41.
    The date gear 31 is provided to be rotatable about the first axis C1 by the rotational force transmitted from the hour wheel 16. The date gear 31 rotates daily at a fixed speed. , in the CW direction, around the first axis C1.
    The date finger 36 protrudes towards the outer side in the radial direction. On the side which, on both sides of the date finger 36, is that of the date gear 31, a columnar projection 32 is provided.
    The date wheel 31 is provided with the hollow of the oblong hole type 33 extending along the peripheral direction. The depression 33 has a curved portion 33a having a predetermined curvature about the first axis C1, and a guide-finger portion 33b extending to the inner side in the upstream radial direction (CCW side in the present embodiment ) of the curved portion 33a in the direction of rotation of the date gear 31.
    The projection 32 of the date finger 36 moves inside the hollow 33 of the date gear 31 while being in sliding contact therewith. Specifically, when the date gear 31 and the date finger 36 rotate relative, the protrusion 32 of the date finger 36 is guided along the shape of the recess 33. When the protrusion 32 is guided by the guide portion -Fig 33b, the date finger 36 moves to the outer side in the radial direction of the date gear 31.
    The elastic portion 41 resiliently supports the date finger 36. The elastic portion 41 is shaped to have an arcuate shape and extends along the circumferential direction of the date gear 31. One end of the elastic portion 41 is connected to the date gear 31 and its other end is connected to the date finger 36.
    In the present embodiment, the date finger 36 and the elastic portion 41 are made in one piece with each other.
    As in the first embodiment and in the second embodiment, around the date gear 31, there is provided a control portion 45 in engagement with the distal end 38 of the date finger 36 (see FIG. Fig. 2). The control portion 45 is provided on the gear train plate 7 of the date jumper 60 adjacent to the date gear 31 in the axial direction and projects on the side of the first axis C1. The date finger 36 is engaged with the control portion 45, whereby the movement of the date gear 31 in the peripheral direction is controlled.
    For the rest, this embodiment has the same constitution as the first embodiment. Operation [0117] The operation of the calendar mechanism including the date indicator drive wheel 30 according to the third embodiment will now be described.
    [0118] Figs. 14 to 17 are enlarged plan views of the portion around the date indicator drive wheel according to the third embodiment; figs. 14 to 17 are arranged in a sequential succession in this order.
    Before the change operation of the date display begins, the date gear 31 is rotated in the CW direction around the first axis C1. The elastic portion 41 and the date finger 36 supported by the date gear 31 are rotated with the date gear 31 in the circumferential direction of the date gear 31.
    As shown in FIG. 14, when the moment before 6 o'clock occurs the maneuver, for example, change of the date display (that is to say around 18 hours), the distal end 38 of the date finger 36 abuts against the control portion 45 and is engaged therewith. As a result, the distal end 38 of the date finger 36 is controlled for movement in the peripheral direction of the date gear 31.
    [0121] Then, as shown in FIG. 15, the date gear 31 continues to rotate about the first axis C1. The distal end 38 of the date finger 36 is controlled in its movement in the peripheral direction, by the state in engagement with the control part 45.
    The projection 32 of the date finger 36 moves inside the recess 33 of the date gear 31 while being in contact therewith. More specifically, when the date gear 31 and the date finger 36 rotate relative, the protrusion 32 of the date finger 36 moves along the curved portion 33a provided in the shape of the recess 33. The curved portion 33a is formed in an arcuate shape about the first axis C1, so that the date finger 36 is substantially maintained at a fixed position.
    One end of the elastic portion 41 moves with the date gear 31 in the direction of rotation. The other end of the elastic portion 41 is held, with the date finger 36, at a position corresponding to the control portion 45. Due to the rotation of the date gear 31, the elastic portion 41 undergoes an elastic deformation such that its two ends approach one another and it decreases in diameter, whereby the elastic force is stored.
    [0124] Then, as shown in FIG. 16, when, for example, the instant immediately before midnight arrives with the passage of time, the protrusion 32 of the date finger 36 is guided by the guide-finger portion 33b of the cogwheel of date 31. Here, the guide portion Finger 33b extends to the inner side in the radial direction. Thus, when the protrusion 32 is guided by the guide-finger portion 33b, the date finger 36 in engagement with the control portion 45 moves to the inner side in the radial direction of the date gear 31. At this time the amount by which the distal portion 38 of the date finger 36 is moved in the radial direction of the date gear 31 increases to the limit of the range allowing the state in engagement with the control portion 45. Deformation the elastic portion 41 is maximum and the elastic force is stored in the elastic portion 41 at a maximum level.
    As shown in FIG. 17, when a predetermined time (e.g. around midnight) of the 30th day arrives, the amount of which the distal end of the date finger 36 has been moved to the inner side in the radial direction of the date gear 31 exceeds the range allowing the state in engagement with the control part 45.
    Then, the state in which the distal end 38 is engaged with the control portion 45 ends and the date finger 36 is separated from the control portion 45. The elastic force stored in the elastic portion 41 is released and the distal end 38 of the date finger 36 is urged to come into contact with the tooth 22 of the date indicator 20.
    The tooth 22 of the date indicator 20 is pushed strongly in the direction of rotation, by the distal end 38 of the date finger 36. When the tooth 22 of the date indicator 20 is pushed strongly according to the direction of rotation by the distal end 38 of the date finger 36, the date indicator 20 rotates a tooth, against the retaining force of the date jumper 60 relative to the tooth 22. As a result, an instant day pass is executed and the day letter "31" is displayed in the window of days 11a.
    After that, the elastic portion 41 and the date finger 36 are released and rotate together, with the date gear 31.
    From this, the calendar mechanism 50 of the third embodiment repeats the operation described above.
    权利要求:
    Claims (10)
    [1]
    In the date indicator drive wheel 30 of the third embodiment, the date gear 31 is provided with a recess 33 extending along the peripheral direction, so that the date finger 36 may be arranged to be displaceable in the radial direction of the date gear 31, without implying an increase in the size of the date gear 31 in the radial direction. Thus, it is possible to provide a date indicator drive wheel 30 for obtaining progress in terms of degree of freedom in the arrangement by means of space saving. In addition, the recess 33 includes the curved portion 33a having a predetermined curvature about the first axis C1, and the guide-finger portion 33b extending towards the inner side in the radial direction of the upstream side of the curved portion. 33a according to the direction of rotation of the date gear 31, so that when the date gear 31 rotates and the projection 32 of the date finger 36 is guided by the guide-finger portion 33b, the date finger 36 can be moved to the inner side in the radial direction. As a result, the date finger 36 is separated from the control portion 45 to release the spring force and, at the same time, can come into contact with the tooth 22 of the date indicator 20, so that the indicator of date 20 can be turned instantly to make the day pass. In addition, the projection 32 enters the recess 33 extending along the peripheral direction, whereby the date finger 36 is mounted on the date gear 31, so that even when external shock is applied in the state where the date finger 36 is engaged with the control portion 45, the movement of the date finger 36 in the radial direction is controlled. Thus, a higher date indicator drive wheel can be provided for impact resistance. In addition, in the date indicator drive wheel 30 according to the third embodiment, the date finger 36 and the elastic portion 41 are formed integrally with each other, so that a further reduction in the number of components can be achieved. Thus, it is possible to provide a date indicator drive wheel 30 for obtaining progress in terms of degree of freedom in the arrangement by means of space saving. The technical scope of this invention is not limited to the embodiments described above and various modifications are possible without departing from the more general scope of the present invention. While the control portion 45 is formed integrally with the date jumper 60 in the previously described embodiments, the control portion 45 and the date jumper 60 can be made as separate components. It should be noted, however, that the previous embodiments are better from the point of view of obtaining a reduction in the number of components. While the date finger 36 and the elastic portion 41 are made as separate components in the first embodiment, they can also be made in one piece with each other. While the date finger 36 and the elastic portion 41 are formed integrally with each other in the second and third embodiments, they may also be formed as separate components. Furthermore, it is possible to replace the components of the embodiments described above by well-known components, as appropriate, without departing from the more general scope of the present invention. claims
    A date indicator drive wheel, comprising: a date gear at which a rotational force is transmitted from a gear wheel rotating in a predetermined cycle and rotating about a first axis; a date finger which is intended to be able to engage and disengage with a date indicator tooth and a control portion controlling movement in the peripheral direction of the toothed wheel of the date wheel; date and which can move in the radial direction of the date gear; and an elastic portion resiliently supporting the date finger, wherein, by rotation of the date gear, the date finger is engaged with the control portion to cause the elastic portion to store elastic force, and then moves in the radial direction to disengage from the control portion to release the elastic force and to come into contact with the tooth of the date indicator.
    [2]
    The date indicator drive wheel according to claim 1, wherein a protrusion is provided on one of the date gear and the date finger; a recess is provided on the other one of the date gear and the date finger; the protrusion enters the recess, whereby the date finger is mounted movably with respect to the date gear; and the elastic portion extends along the circumferential direction of the date gear, one end of this elastic portion being secured to the date gear, the other end of the elastic portion being secured to the date finger.
    [3]
    The date indicator drive wheel according to claim 1 or 2, wherein the date finger is mounted on the date gear so as to be rotatable about a second axis parallel to the first axis.
    [4]
    The date indicator drive wheel according to claim 2, wherein the date gear has a projection, and a sliding contact portion which comes into sliding contact with a proximal end of the date finger to define the movement. a date finger in the radial direction and which, when the date gear rotates by a predetermined angle, releases the sliding contact with the proximal end to allow the date finger to move in the radial direction; and the date finger has the recess extending at the proximal end along the peripheral direction.
    [5]
    The date indicator drive wheel according to claim 2, wherein the date finger has a projection; the date gear comprises a hollow extending in the peripheral direction; and the recess has a curved portion having a predetermined curvature about the first axis, and a guide-finger portion extending in the radial direction, upstream of the curved portion in the direction of rotation of the date gear.
    [6]
    The date indicator drive wheel according to one of claims 1 to 5, wherein the date finger and the elastic portion are integral with each other.
    [7]
    A calendar mechanism comprising a date indicator drive wheel according to one of claims 1 to 6, the date indicator, the control portion, and a date jumper which can be engaged and to come off with a tooth of the date indicator.
    [8]
    8. Calendar mechanism according to claim 7, wherein the control part is provided on the date jumper.
    [9]
    Movement comprising a calendar mechanism according to claim 7 or 8.
    [10]
    Timepiece comprising a movement according to claim 9.
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    同族专利:
    公开号 | 公开日
    JP6649809B2|2020-02-19|
    CH712222B1|2022-01-14|
    JP2017161307A|2017-09-14|
    CN107168032B|2020-01-07|
    CN107168032A|2017-09-15|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2016044687A|JP6649809B2|2016-03-08|2016-03-08|Date wheel, calendar mechanism, movement and clock|
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