• 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:
    An automatic calendar mechanism, a movement, and a timepiece are proposed which make simple configuration possible and which are advantageous in terms of free arrangement for displaying a month and a date. An automatic calendar mechanism (10) includes a month wheel (80) which rotates around a first axis once a year; a short month date drive wheel (25) which rotates around the first axis once a day; a short month date unlocking finger (35) which is carried by the short month date drive wheel (25) and which rotates synchronously with the short month date drive wheel (25) by moving; a date wheel drive wheel (40) which has a date finger (42) and which rotates once a day; and a date wheel which has an end-of-month finger (53) and a toothing (51) pushed by the date finger (42) once a day and which rotates around a second axis (C2) once a day month. The short month date unlocking finger (35) rotates the date wheel by pushing the month end finger (53) on the last day of a short month, which is a month with 30 days or less.
    公开号:CH710109B1
    申请号:CH01291/15
    申请日:2015-09-08
    公开日:2020-02-28
    发明作者:Mori Yuichi
    申请人:Seiko Instr Inc；
    IPC主号:
    专利说明:

    Description
    Background of the invention
    1. Field of the invention The present invention relates to an automatic calendar mechanism, a movement, and a timepiece.
    2. Description of the Prior Art [0002] In timepieces with an attached calendar which can display a date and a month, a calendar mechanism is well known (hereinafter called "an automatic calendar mechanism") which adjusts the timepiece by two days in advance to minimize the date correction at the end of a short month in which the month is 30 days or less (for example, see Japanese Patent No. 4,624,848 (patent document 1) and Soichiro MATSUZAKI, "Chronos, Japanese version", Simsum Media Co., Ltd., February 3, 2011, pages 114 to 115 (non-patent document 1).
    Patent document 1 discloses an automatic calendar mechanism including a planetary gear mechanism having a lunar satellite unit which has five drive teeth and a set of fixed planetary teeth which is concentric with an indication roller. date and which is in direct training relationship with the lunar satellite unit.
    In addition, non-patent document 1 discloses an automatic calendar mechanism including a control cam, a date wheel lock arm which is actuated by the control cam, a wheel lock arm finger of date, a date wheel finger, and a month star wheel (the month wheel) and a date wheel, these two being arranged coaxially with each other.
    However, the configuration according to the prior art disclosed in the patent document 1 is complicated due to the planetary gear mechanism which uses a multitude of wheels. In addition, the arrangement made available for the display of the month and the date according to the prior art disclosed in non-patent document 1 is limited since the month wheel and the date wheel are arranged coaxially l with each other.
    Summary of the invention [0006] Consequently, the present invention is made with a view to the circumstances described above, and its object is to provide an automatic calendar mechanism, a movement, and a timepiece which make possible a simple configuration and which are advantageous at the level of free arrangement for the display of a month and a date.
    In order to solve the problem, according to the present invention, an automatic calendar mechanism is proposed by virtue of the present invention comprising: a month wheel which rotates around a first axis once a year; a short month date drive wheel that rotates around the first axis once a day; a short month date unlocking finger which is carried by the short month date drive wheel and which rotates synchronously with the short month date drive wheel while moving; a date wheel drive wheel which has a date finger and which rotates once a day; and a date wheel which has an end-of-month finger and a toothing pushed by the date finger once a day and which rotates around a second axis once a month, the month date unlocking finger making short turn the date wheel by pushing the month-end finger on the last day of a short month, which is a month with 30 days or less.
    According to the present invention, without the need to use a complicated planetary gear mechanism as disclosed in the prior art, it is possible to configure the automatic calendar mechanism by using a simple configuration including the month wheel, the short month date drive wheel, the short month date unlocking finger, the date wheel drive wheel, and the date wheel having the month end finger. In addition, the month wheel rotates around the first axis, and the date wheel rotates around the second axis. Consequently, in comparison with the prior art in which the month wheel and the date wheel are arranged coaxially with each other, it is possible to have more freely any means of displaying the month such as '' a month display disc or a month hand which nests with the date wheel and any date display means such as a date display disc or a date hand which nests with the date wheel. Therefore, it is possible to make available the automatic calendar mechanism which makes possible a simple configuration and which is advantageous in terms of free arrangement for the display of a month and a date.
    In addition, the automatic calendar mechanism can further include a month cam which, on an external peripheral surface, has a convex part and a concave part which correspond to the short month and to a long month which is a month having 31 days, and which is arranged coaxially with the month wheel and which rotates synchronously with the month wheel; and a short month date unlocking lever which is rotatably arranged relative to the short month date drive wheel and one end part of which comes into sliding contact with the convex part and the concave part of the month cam, and which rotates around the month cam in synchronism with the short month date drive wheel, the short month date unlocking finger being carried by the short month date unlocking rocker.
    According to this embodiment of the present invention, the automatic calendar mechanism includes the month cam which rotates synchronously with the date wheel and the short month date unlocking rocker which rotates around the cam. month while coming into sliding contact with the external peripheral surface having the convex part and the concave part which correspond to the short month and the long month. As a result, the short month date unlocking finger can reliably move corresponding to the short month and the long month using a simple configuration and the date wheel can be rotated on the last day of the short month using the short month date unlock. Therefore, it is possible to provide the automatic calendar mechanism which makes possible a simple configuration and which is very reliable.
    In addition, the automatic calendar mechanism can further include a date indicator wheel which actuates a date hand; a date cam which rotates around the second axis in synchronization with the date wheel and which has an outermost part located at a maximum separation distance from the second axis and an innermost part located at a separation distance minimum of the second axis; a needle lever which has a follower part in contact with the date cam and a lever toothing meshing with the date indicator wheel and which can go back and forth between an initial position closest to the date wheel month and a final position furthest from the month wheel; an energy transmission element which transmits a stress such that the needle lever is pressed towards the month wheel; and a month unlocking finger worn by the needle lever, which pushes and spins the month wheel on the last day of each month, the needle lever moving from the initial position to the final position due to the rotation of the date cam, and moves from the final position to the initial position by the stress transmitted by the energy transmission element, when the follower part moves from the most external part to the part more internal, and the month unlocking finger rotating the month wheel on the last day of each month in response to movement of the needle lever from the final position to the initial position.
    According to this embodiment of the present invention, the needle lever moves from the initial position to the final position due to the rotation of the date cam. As a result, the date indicator wheel meshing with the toothing of the needle lever can be rotated in one direction, and the date hand can be moved from a position corresponding to the initial position (for example, the position corresponding to the first day of the month) to a position corresponding to the final position (for example, the position corresponding to the last day of the month). In addition, the needle lever moves from the final position to the initial position by the pressure transmitting energy from the energy transmitting element, when the follower part moves from the outermost part to the part the most internal. As a result, the date indicator wheel meshing with the toothing of the needle lever can rotate in the other direction and the date hand can be moved instantly from the position corresponding to the final position (for example, the position corresponding to the last day of the month) at the position corresponding to the initial position (for example, the position corresponding to the first day of the month). As described above, according to the present invention, the date hand can perform a back-and-forth movement, and it is therefore possible to produce a very advantageous date display. Furthermore, since the date cam rotates synchronously with the date wheel, the above-described back-and-forth movement of the date hand can be performed independently of the short month and the long month. In addition, the month release finger rotates the date wheel in response to movement of the needle lever from the end position to the initial position. Consequently, independently of the short month and the long month, it is possible to adjust the timepiece in advance of a month in the month display means such as the month display disc or the hand of the month which overlaps with the month wheel.
    In addition, the date wheel can include a month unlocking finger which pushes and rotates the month wheel on the last day of each month.
    According to this embodiment of the present invention, it is possible to adjust the timepiece in advance of a month in the month display means using a simple configuration in which the month unlocking finger is carried by the date wheel.
    In addition, the date wheel drive wheel and the short month date drive wheel can be arranged coaxially with each other.
    According to this embodiment of the present invention, it is possible to miniaturize the automatic calendar mechanism by arranging the date wheel drive wheel and the short month date drive wheel coaxially. one with the other.
    In addition, a movement according to the present invention includes the automatic calendar mechanism described above. In addition, a timepiece according to the present invention includes the movement described above.
    According to the present invention, there is provided the automatic calendar mechanism which makes possible a simple configuration and which is advantageous in terms of free arrangement for the display of a month and a date. Therefore, it is possible to provide the movement and the timepiece which are very reliable and very advantageous.
    According to the present invention, without the need to use a complicated planetary gear mechanism as disclosed in the prior art, it is possible to configure an automatic calendar mechanism by using a simple configuration comprising a date wheel, a short month date drive wheel, a short month date unlocking finger, a date wheel drive wheel, and a month wheel having an end of month finger. In addition, the month wheel rotates around a first axis, and the date wheel rotates around a second axis. Consequently, in comparison with the prior art in which the month wheel and the date wheel are arranged coaxially with each other, it is possible to have more freely any means of displaying the month such as '' a month display disc or a month hand which fits with the month wheel and any date display means such as a date display disc or a date hand which fits with the date wheel. Therefore, it is possible to make available the automatic calendar mechanism which makes possible a simple configuration and which is advantageous in terms of free arrangement for the display of a month and a date.
    Brief description of the drawings [0021]
    Fig. 1 is a plan view of a timepiece, a movement, and an automatic calendar mechanism.
    Fig. 2 is a plan view of a date unlocking mechanism.
    Fig. 3 is a plan view of a month unlocking mechanism.
    Fig. 4 is a block diagram illustrating an energy transmission path in the automatic calendar mechanism.
    Fig. 5 is an explanatory view of an automatic calendar mechanism according to a first example of modification of an embodiment.
    Fig. 6 is an explanatory view of an automatic calendar mechanism according to a second example of modification of the embodiment.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.
    In general, a machine body including a drive part of a timepiece is called a "movement". The finished product state by attaching a dial and hands to the movement and placing the movement in a timepiece box is called a "complete assembly" of the timepiece. Relative to the two sides of a main plate which constitutes the substrate of the timepiece, the side having a timepiece case glass, that is to say, the side having the dial is called the "Back side" of the movement. Relative to the two sides of the main stage, the side with the back of the timepiece case, that is, the side opposite the dial is called the "front side" of the movement.
    [0024] FIG. 1 is a plan view of a timepiece 1, of a movement 100, and of an automatic calendar mechanism 10. FIG. 1 is the plan view as seen from the rear side of the movement 100. In addition, in FIG. 1, each component of the structure is illustrated by piercing a dial 2 for reasons of ease.
    As illustrated in FIG. 1, the timepiece 1 is provided with the dial 2 which includes an indicator indicating information relating to time. Timepiece 1 is provided with an hour hand (not shown) indicating the hours, a minute hand (not shown) indicating the minutes, and a second hand (not shown) indicating the seconds .
    In addition, the timepiece 1 has a month display area 4 and a date display area 6.
    The month display area 4 includes a month display window 4a disposed between a position substantially 6 hours from the timepiece and the center of the timepiece 1. For example, the timepiece Watchmaking 1 displays a month to a user by exposing characters indicating the month (for example, in Fig. 1, the characters "FEB" representing "February") which are marked on a month display disc 5 to through the month display window 4a. The date display area 6 is mainly arranged in the region between 12 noon and 6 am. Timepiece 1 has a date hand 7 indicating a date. Timepiece 1 displays the date to the user by engaging the date hand 7 to indicate one of the characters between "1" and "31" which are marked on dial 2.
    The movement 100 has a winding stem 8 and a winding crown 9 arranged at a distal end of the winding stem 8. The movement 100 can correct a date and a month in such a way that the winding crown 9 is removed from a timepiece box 1a and is then turned in a predetermined direction to turn a date wheel 50 and a month wheel 80 (all will be described later).
    The movement 100 has the automatic calendar mechanism 10. The automatic calendar mechanism 10 has a date unlocking mechanism 20 and a month unlocking mechanism 60. Hereinafter, the automatic calendar mechanism 10 having the mechanism date unlocking mechanism 20 and the month unlocking mechanism 60 will be described in detail with reference to the respective drawings. In the following description, the clockwise direction in each plan view subsequent to FIG. 1 will be called "CW direction", and counterclockwise will be called "CCW direction".
    Date unlocking mechanism [0031] FIG. 2 is a plan view of the date unlocking mechanism, and FIG. 3 is a plan view of the month unlocking mechanism.
    As illustrated in FIG. 2, the date unlocking mechanism 20 mainly includes an hour wheel 21, a short month date driving wheel 25, a short month date unlocking rocker 30, a month cam 27, a month wheel date wheel drive 40, a date wheel 50, and a date jumper 56.
    The hour wheel 21 turns thanks to the energy transmitted by an energy source (not shown) which is housed inside the timepiece box 1a, such as a motor or a barrel of movement, for example. The hour wheel 21 rotates around a predetermined axis in the direction CW. For example, the rotation of the hour wheel 21 is transmitted to the short month date drive wheel 25 by a gear train such as a minute wheel 22 and an intermediate date wheel 23.
    For example, the short month date drive wheel 25 is formed with an annular shape and meshes with an intermediate date wheel pinion 23a of the intermediate date wheel 23. The date drive wheel short month 25 revolves around a first axis C1 in the direction CCW once a day (that is to say, in 24 hours). The short month date drive wheel 25 is formed with the annular shape. A month cam 27 (to be described later) is arranged coaxially with the short month date drive wheel 25.
    The short month date unlocking lever 30 is carried by the short month date driving wheel 25. The short month date unlocking lever 30 is arranged to extend along a part inner edge of the short month date drive wheel 25 which is formed with the annular shape, and is itself formed with a substantially circular arc shape as a whole. The short month date unlocking lever 30 is attached to the short month date drive wheel 25 and rotates around the month cam 27 in synchronization with the short month date drive wheel 25.
    In the short month date unlocking lever 30, one end serves as a sliding contact part 31 which can come into sliding contact with the month cam 27, and the other end serves as a contact part 33 which comes into contact with a short month date unlocking finger spring 37 (will be described later). The contact portion 33 receives from the short month date unlocking finger spring 37 the energy outward in a radial direction. The short month date unlocking lever 30 is supported near the contact portion 33 by the short month date drive wheel 25 so that it can rotate about an axis parallel to the first axis C1.
    A short month date unlocking finger 35 is formed between the sliding contact part 31 and the contact part 33 of the short month date unlocking lever 30 to project outward in the radial direction. of the short month date drive wheel 25.
    The short month date unlocking finger 35 pushes a month end finger 53 carried by the date wheel 50 (will be described later) to rotate the date wheel 50. The date unlocking rocker short month 30 and the short month date unlocking finger 35 rotate around the first axis C1 in the direction CCW once a day in response to the rotation of the short month date drive wheel 25. Although details are described later, at this time, the short month date unlocking finger 35 rotates while moving inward and outward in the radial direction.
    In addition, the short month date unlocking finger spring 37 is carried by the short month date driving wheel 25. The short month date unlocking finger spring 37 has a spring portion elongated 38. The spring portion 38 is arranged to extend along an inner edge portion of the short month date drive wheel 25 in an arcuate shape formed around the first axis C1. Its nearest end portion is attached to the short month date drive wheel 25 and a distal end portion 38a is in contact with the contact portion 33 of the short month date release lever 30 In this way, the contact portion 33 of the short month date unlocking latch 30 receives the energy outward in the radial direction. In addition, the sliding contact part 31 disposed on the side opposite to the contact part 33 is pushed against the month cam 27 by a pressure transmitting the energy of the short month date unlocking finger spring 37, and between in contact with the month cam 27 due to the rotation of the short month date drive wheel 25.
    The month cam 27 rotates around the first axis C1 in the direction CCW step by step with the amount of 30 ° per month, and rotates once a year. The month cam 27 is arranged coaxially with a month wheel 80 (will be described later, see FIG. 3) and rotates in synchronism with the month wheel 80.
    Several convex parts 27a to 27e are arranged in an external peripheral surface of the month cam 27. The convex parts 27a to 27e of the month cam 27 are formed respectively at positions corresponding to short months (February, April, June, September and November) in which the month is 30 days or less, when the external peripheral surface of the month cam 27 is divided evenly into twelve parts around the first axis C1 with the amount of 30 ° and the twelve parts are distributed sequentially between January and December in the CCW direction. Parts between the plural convex parts 27a to 27e are concave parts, and the concave parts are formed at positions corresponding to the long months in which the month has 31 days.
    When the sliding contact part 31 is in sliding contact with the external peripheral surface of the month cam 27, the short month date unlocking lever 30 rotates around the first axis C1. When the sliding contact part 31 is in sliding contact with the convex parts 27a to 27e, a distal end part of the short month date unlocking finger 35 is positioned on the outermost side in the radial direction, and when the sliding contact part 31 is in sliding contact with the concave part, the distal end part of the short month date unlocking finger 35 is positioned on the innermost side in the radial direction. In this way, the month cam 27 causes the short month date unlocking finger 35 to move inward and outward in the radial direction in response to the rotation of the month date unlocking lever. short 30 rotating synchronously with the short month date drive wheel 25. Hereinafter, the position where the short month date unlocking finger 35 is arranged on the innermost side in the radial direction will be called the "innermost position" and the position where the short month date unlocking finger 35 is arranged on the outermost side in the radial direction will be called the "outermost position".
    The rotation of the short month date drive wheel 25 is transmitted to the date wheel drive wheel 40 by, for example, a date transmission wheel 24. The wheel drive wheel date 40 revolves around a predetermined axis in the direction CCW once a day (that is to say, in 24 hours).
    The date finger 42 is carried by the date wheel drive wheel 40. The date finger 42 has a spring portion 43 formed with a circular arc shape in a plan view and a portion of contact 45 disposed in a distal end of the spring portion 43, and is arranged to overlap the date wheel drive wheel 40 in the axial direction. The date finger 42 is arranged in one piece with the date wheel drive wheel 40, and rotates in synchronism with the date wheel drive wheel 40. The spring part 43 is resiliently deformable in the circumferential direction and in the radial direction. The contact portion 45 rotates about the central axis of the date wheel drive wheel 40 in response to the rotation of the date wheel drive wheel 40. In this way, the contact portion 45 pushes a date wheel toothing 51 (which corresponds to the "toothing" in the claims) for rotating the date wheel 50.
    The date wheel 50 is formed with a disc shape, and the date wheel toothing 51 is formed in its outer peripheral edge. The date wheel toothing 51 has 31 teeth formed with a spacing of 360 ° / 31 = approximately 11.6 corresponding to the 31 days which represent the number of days in the long month. The date wheel toothing 51 is pushed once a day by the contact portion 45 of the date finger 42 which rotates once a day. In this way, the date wheel 50 rotates around the second axis C2 with the spacing of the same angle such as the spacing angle (approximately 11.6 °) of the date wheel toothing 51 in the direction CW, not step by step every day, and turns completely once a month (that is, in 31 days).
    The date wheel 50 has the month end finger 53. The month end finger 53 is arranged such that a main body portion 54 extends along the radial direction of the wheel. date 50. One end of the month-end finger 53 serves as a finger part 55 which projects outwards from the date wheel teeth 51. For example, the last day of the month runs short, when the body part main 54 of the month-end finger 53 is positioned so as to extend along a straight line connecting the first axis C1 and the second axis C2 (for example, the state illustrated in FIG. 2), the finger portion 55 is urged by the short month date unlocking finger 35 from the short month date unlocking rocker 30 located at the outermost position. In this way, on the last day of the short month, the date wheel 50 rotates with one step thanks to the short month date unlocking finger 35.
    A date jumper 56 is in contact with the date wheel 50. The date jumper 56 is a component for adjusting a position in the direction of rotation of the date wheel 50, and includes a part of date jumper spring 58, the distal end portion 57 of which is a free end and which is elastically deformable. The distal end portion 57 of the date jumper spring portion 58 can engage with the date wheel toothing 51. The date jumper 56 regulates the rotation of the date wheel 50 by engaging the distal end portion 57 with the date wheel toothing 51. In this way, the date wheel 50 can rotate step by day with the spacing of the same angle as the spacing angle (approximately 11.6 °) of the date wheel teeth 51.
    Unlocking mechanism for months As illustrated in FIG. 3, the month unlocking mechanism 60 mainly includes a date cam 61, a needle lever 70, a date indicator wheel 67, a month wheel 80, a month jumper 86, and the return wheel 78. Synchronized with the date wheel 50, the date cam 61 rotates around the second axis C2 in the direction CW once a month (that is to say, in 31 days). An outer peripheral surface of the date cam 61 serves as the cam surface 62 which is formed such that its radius gradually increases in a spiral shape in the CCW direction. The cam surface 62 has an outermost portion 63 having an optimized separation distance from the second axis C2 and an innermost portion 64 having an minimized separation distance from the second axis C2.
    The needle lever 70 includes a follower portion 71 and a lever main body portion 73, and is formed with an L shape as a whole. A connection part between the follower part 71 and the lever main body part 73 serves as a pivoting part 72, and is rotatably supported to make the round trips around a predetermined axis.
    The follower part 71 is formed so that its distal end is curved towards the cam surface 62 of the date cam 61.
    In the main lever body part 73, an end part on the side opposite to the pivoting portion 72 is formed with a fan shape, and a lever toothing 74 is formed in its edge part . The lever teeth 74 mesh with the date indicator wheel 67 (will be described later).
    The needle lever 70 is connected to the return wheel 78 (will be described later, and corresponds to an "energy transmitting element" in the claims) by the date indicator wheel 67. The lever needle 70 receives the energy around an axis of the pivoting portion 72 in the direction CW by the deflection wheel 78. In this way, the follower part 71 is pushed against the cam surface 62 of the cam date 61, and is put in sliding contact with the date cam 61 by the rotation of the date cam 61.
    The follower part 71 of the needle lever 70 moves relatively while coming into sliding contact with the cam surface 62 in response to the date cam 61.
    When the follower part 71 is positioned in the innermost part 64, the needle lever 70 is located in a position deviated as much as possible around the axis of the pivoting portion 72 in the CW direction. Hereinafter, the position where the needle lever 70 is deflected as far as possible in the CW direction will be called the "initial position". In addition, when the follower portion 71 is positioned in the outermost portion 63, the needle lever 70 is located in a position deviated to the maximum around the axis of the pivoting portion 72 in the direction CCW. In the following, the position where the needle lever is fully deflected in the CCW direction will be referred to as the "end position". In fig. 3, the needle lever 70 located in the initial position is illustrated by a dotted line, and the needle lever 70 located in the final position is illustrated by a solid line. Here, as described above, the date cam 61 rotates once a month. Consequently, the needle lever 70 goes back and forth between the initial position and the final position once a month.
    In the main lever body part 73, a month unlocking finger 75 is disposed between the pivoting portion 72 and the lever teeth 74. The month unlocking finger 75 is formed to protrude towards the month wheel 80 on the side opposite the date cam 61 on the other side of the main lever body part 73. The month unlocking finger 75 is supported to be able to rotate around a predetermined axis with respect to to the main lever body portion 73. The month release finger 75 pushes and spins the month wheel 80 on the last day of each month.
    In addition, a leaf spring portion 76 is formed in a central portion of the lever main body portion 73 to extend in the direction in which the lever main body portion 73 extends. leaf spring part 76 is elastically deformable as a whole, while one end part on the lever teeth 74 on the side is fixed to the main lever body part 73 and the other end part on the side of the pivoting portion 72 is a free end. The leaf spring portion 76 transmits energy to the month release finger 75 around a pivot axis in the CCW direction, while the other end portion is in contact with a portion of the release finger from 75 months.
    The lever teeth 74 of the needle lever 70 mesh with the date indicator wheel 67. The date indicator wheel 67 is connected to the date hand 7 (see fig. 1) , rotating the date hand 7 in this way.
    When the needle lever 70 is located in the initial position, the date indicator wheel 67 is in a state where it is turned as far as possible in the CCW direction. At this time, the date hand 7 indicates "1" among the numbers between "1" and "31" which indicate the date marked in dial 2. In addition, when the needle lever 70 is located at the position final, the date indicator wheel 67 is in a state where it is turned as far as possible in the direction CW. At this time, the date hand 7 indicates “31” among the numbers between “1” and “31” which indicate the date marked in dial 2. In this way, the date hand 7 is actuated with a not every day in response to the rotation of the date cam 61 and the movement of the needle lever 70.
    In addition, the date indicator wheel 67 rotates very rapidly in the CCW direction, since the follower part of the needle lever 70 is moved instantaneously from the outermost part 63 to the innermost part 64 by a pressure transmitting the energy of the return wheel 78 (will be described later) and the needle lever 70 moves from the final position to the initial position. At this time, the date hand 7 rotates very rapidly in the CCW direction, and instantly changes from a state where it indicates the number "31" indicating the date marked in dial 2 to a state where it indicates the number " 1 ". In this way, the date hand 7 is actuated to go back and forth in a fan shape in the date display area 6.
    The month wheel 80 is arranged on the side opposite the date cam 61 on the other side of the needle lever 70 so that it can rotate around the first axis C1. The month wheel 80 is formed with a disc shape, and a month wheel toothing 81 is formed in its outer peripheral edge. The month wheel toothing 81 has twelve teeth formed with the spacing of 30 ° which corresponds to the twelve months which represent the number of months in a year. The month wheel toothing 81 is pushed once by a month unlocking finger 75 carried by the needle lever 70, when the needle lever 70 moves from the final position to the initial position. The needle lever 70 makes a round trip once a month. Consequently, the month wheel toothing 81 is pushed once by the month unlocking finger 75.
    The month necklace 86 is in contact with the month wheel 80. The month necklace 86 is a component for adjusting a position in the direction of rotation of the month wheel 80, and includes a part of month jumper spring 88, the distal end portion 87 of which is a free end and which is elastically deformable. The distal end portion 87 of the date jumper spring portion 88 can engage with the month wheel toothing 81. The month jumper 86 controls the rotation of the month wheel 80 through the end portion distal 87 engaging with the month wheel teeth 81. In this way, the month wheel 80 rotates around the first axis C1 of one step per month with the spacing of 30 ° in the direction CCW, and turns completely Once in a year.
    In addition, the month display disc 5 (see Fig. 1) is carried by the month wheel 80. The month display disc 5 is arranged so as to be coaxial with the wheel month 80 and to overlap the month wheel 80, and it rotates synchronously with the month wheel 80. The characters "JAN" (January) to "DEC" (December) which indicate each month are marked on the surface of the disc 5 month display and are spaced 30 ° in the CW direction.
    The idler wheel 78 is connected to the needle lever 70 by the date indicator wheel 67, and transmits energy to the needle lever 70 in a direction closer to the month wheel 80. The deflection wheel 78 has a hairspring part 79 in a central space part, while a main body part 78a is formed with an annular shape, for example. In the hairspring part 79, one end is fixed to a gear train bridge (not illustrated) of the timepiece 1, and the other end is connected to the main body part 78a of the idler wheel 78 .
    The hairspring part 79 is arranged coaxially with the idler wheel 78, and is formed with a shape of a spiral in the CCW direction so as to extend along an Archimedes curve, for example . The return wheel 78 rotates in the CCW direction, thereby encouraging the hairspring portion 79 to have a reduced diameter and to deform elastically.
    The needle lever 70 moves from the initial position to the final position, in this way turning the return wheel 78 in the CCW direction by the date indicator wheel 67. In this way, a pressure transmitting energy is accumulated in the hairspring portion 79 of the idler 78 to turn the idler 78 in the CW direction. In addition, after the needle lever 70 reaches the final position and the follower part 71 passes the outermost part 63 of the date cam 61, the pressure transmitting the energy of the hairspring part 79 is released, and the return wheel 78 rotates very rapidly in the direction CW. In this way, the needle lever 70 can move instantaneously from the final position to the initial position.
    Operation [0067] FIG. 4 is a block diagram illustrating the energy transmission path in the automatic calendar mechanism. In fig. 4, an arrow illustrated by a solid line indicates the direction of energy transmission, the arrow illustrated by a dotted line indicates the operation of a pressure transmitting energy, and the double line indicates the state of coaxial assembly .
    Next, the operation of the automatic calendar mechanism 10 described above will be described. In the following description, the reference numbers of the configuration components in the automatic calendar mechanism 10 can refer to Figs. 1 to 4. In addition, below, the operation of the automatic calendar mechanism 10 will be described in the case where the date becomes the first day of the following month after the first day to the last day of a month. In addition, in the following description, the operation of the automatic calendar mechanism 10 on the last day of the short month corresponds to the operation of the automatic calendar mechanism 10 on the last days of April, June, September and November except February.
    As illustrated in FIG. 4, the energy supplied by an energy source (not illustrated) such as a motor or a barrel of movement is transmitted to the drive wheel of date of short month 25 by a gear train such as the wheel of hours 21, the minutes wheel 22, and the intermediate date wheel 23. In this way, the short month date drive wheel 25 rotates around the first axis C1 in the direction CCW at a speed of one rotation by day. In addition, the short month date unlocking finger 35 carried by the short month date drive wheel 25 rotates around the first axis C1 in the direction CCW at the speed of one rotation per day, in synchronization with the month date drive wheel runs 25.
    In addition, the energy transmitted to the short month date drive wheel 25 is transmitted to the date wheel drive wheel 40 by the date transmission wheel 24 meshing with the drive wheel of short month date 25. In this way, the date wheel drive wheel 40 rotates about a predetermined axis in the direction CCW at the speed of one rotation per day. In addition, the date finger 42 carried by the date wheel drive wheel 40 rotates around the predetermined axis in the direction CCW at the speed of one rotation per day, synchronized with the drive wheel. date wheel 40.
    After being brought into contact with the date wheel toothing 51 of the date wheel 50 by rotation, the contact portion 45 of the date finger 42 pushes the date wheel toothing 51 with the flow of the time. The time when the contact portion 45 of the date finger 42 comes into contact with the date wheel toothing 51 of the date wheel 50 is generally set to a predetermined time before OOhOO (0:00 am) when the date is modified (for example, between 11:00 p.m. (11:00 p.m.) and OOhOO (0:00 a.m.) of the following day). Then, if the date wheel toothing 51 is pushed by the contact portion 45 of the date finger 42 and rotates in the direction CW by a predetermined angle, the distal end portion 57 of the date jumper 56 and the toothing date wheel 51 temporarily disengages from each other, then engages again. In this way, the date wheel 50 turns step by step with the predetermined amount in the direction CW, and turns completely once a month.
    In addition, the date cam 61 rotating in synchronism with the date wheel 50 rotates one step per day in the direction CW, and rotates completely once a month.
    Here, the follower part 71 moves relatively from the innermost part 64 to the outermost part 63 due to the rotation of the date cam 61, thereby moving the needle lever 70 from the initial position (position corresponding to the first day of the month) to the final position (position corresponding to the last day of the month). In this way, the date indicator wheel 67 meshing with the lever teeth 74 of the needle lever 70 rotates one step a day in the direction CW. In addition, the date hand 7 attached to the date indicator wheel 67 is actuated one day at OOhOO when the date is changed, in response to the rotation of the date indicator wheel 67. As described above, the automatic calendar mechanism 10 operates the date hand 7 step by step from the first day to the last day of the month.
    Then, when the date is changed from the last day of the month to the first day of the following month, the automatic calendar mechanism 10 actuates the date hand 7 as follows.
    First, the operation for a long month will be described.
    In the case of the long month, on the 30 th day which is the day preceding the last day, the short month date unlocking finger 35 is arranged in the innermost position by the month cam 27, and rotates with the passage of time, without being brought into contact with the end-of-month finger 53 by rotation. Consequently, the date wheel 50 is stopped in a state where its position is adjusted by the date jumper 56, without being pushed by the short month date unlocking finger 35. In addition, the date cam 61 rotating by synchronized with the date wheel 50 is also stopped without turning.
    Then, after being brought into contact with the date wheel teeth 51 of the date wheel 50 by rotation, the date finger 42 carried by the date wheel drive wheel 40 pushes the teeth of date wheel 51 with the passage of time. Then, if the date wheel toothing 51 is pushed by the contact portion 45 of the date finger 42 and rotates in the direction CW by a predetermined angle, the distal end portion 57 of the date jumper 56 and the toothing date wheel 51 temporarily disengages from each other, then engages again. In this way, the date wheel 50 and the date cam 61 rotate at a predetermined spacing angle.
    In this way, the date hand 7 is switched from the 30 th to the 31 st day, and is therefore actuated by the amount of one day.
    [0079] Then, if a time period corresponding to one day elapses, the date hand 7 is switched from the 31 th day from the first day, and is actuated by the amount of one day.
    That is to say, in the case of the long month, the date wheel 50 and the date cam 61 rotate step by day at a predetermined spacing angle.
    Next, the operation for a short month will be described.
    In the case of the short month, the last day, the short month date unlocking finger 35 is arranged in the outermost position by the month cam 27, and is brought into contact with the end finger of 53 months by rotation. Thereafter, the short month date unlocking finger 35 pushes a finger portion 55 of the month-end finger 53 with the passage of time. The time when the short month date unlocking finger 35 comes into contact with the finger portion 55 of the month-end finger 53 is generally set at a predetermined time before OOhOO when the date is changed (for example, between 21 hOO and 10 p.m.). Then, if the month end finger 53 is pushed by the short month date unlocking finger 35 and the date wheel 50 rotating in synchronism with the month end finger 53 rotates in the direction CW at a predetermined angle , the distal end portion 57 of the date jumper 56 and the date wheel toothing 51 temporarily disengage from each other, then engage again. In this way, the date wheel 50 and the date cam 61 rotate at a predetermined spacing angle.
    [0083] In this way, the date hand 7 is switched from the 30 th day to 31 th day, and is actuated by the amount of one day.
    Consequently, after being brought into contact with the date wheel teeth 51 of the date wheel 50, the date finger 42 carried by the date wheel drive wheel 40 pushes the wheel teeth. date 51 with the passage of time. Then, if the date wheel toothing 51 is pushed by the contact portion 45 of the date finger 42 and rotates in the direction CW at a predetermined angle, the distal end portion 57 of the date jumper 56 and the toothing of date wheel 51 temporarily disengages from each other, then engages again. In this way, the date wheel 50 and the date cam 61 rotate at a step with a predetermined spacing angle.
    [0085] In this way, the date hand 7 is switched from the 31 th day from the first day, and is actuated by the amount of one day.
    In the case of the short month, the operation described above incites the date wheel 50 and the date cam 61 to rotate two steps per day at a predetermined spacing angle.
    [0087] In other words, this operation prompts the date hand 7 to switch from the 30th day on the first day by tricking the 31 th day to move rapidly forwards.
    [0088] Thereafter, the date of cam 61 rotates by one step on the 31 th day is the last day of the month long or rotates two steps on the last day of the month short, encouraging in this way the follower portion 71 of the needle lever 70 to pass the outermost part 63 of the date cam 61. In addition, after the follower part 71 passes the outermost part 63, the needle lever 70 moves instantly from the final position to the initial position by a pressure transmitting the energy of the return wheel 78 (see the dotted line in fig. 3). In this way, the follower part 71 of the needle lever 70 moves relatively towards the innermost part 64 of the date cam 61.
    At this time, in the case of the last day of the long month, in response to the movement of the needle lever 70 from the initial position to the final position, the date indicator wheel 67 instantly turns in the direction CCW . In this way, the date hand 7 attached to the date indicator wheel 67 instantly moves from a position indicating "31" from the last day to a position indicating "1" from the first day.
    On the other hand, in the case of the last day of the short month, in the date indicator wheel 67, in response to the rotation of a step of the date wheel 50 and of the date cam 61 which is caused by the end of month finger 53, the needle lever 70 reaches the final position. At this time, the date indicator wheel 67 rotates one step in the CW direction. In addition, the date hand 7 attached to the date indicator wheel 67 moves from a position indicating "30" of the last day of the short month to the position indicating "31".
    Then, similarly to the case of the long month, in response to the movement of the needle lever 70 from the final position to the initial position, the date indicator wheel 67 instantly turns in the direction CCW. In this way, the date hand 7 attached to the date indicator wheel 67 instantly moves from the position indicating "31" of the last day to the position indicating "1" of the first day.
    As described above, according to the automatic calendar mechanism 10 of this embodiment, the last day of the long month, the date wheel 50 is pushed by the date finger 42, and turns one step, thereby prompting the date hand 7 to be actuated by the amount of one day. Furthermore, according to the automatic calendar mechanism 10 of this embodiment, the last day of the short month, the month-end finger 53 is pushed by the short-month date unlocking finger 35, the date wheel 50 rotates. one step, and then the date wheel 50 is pushed by the date finger 42 to turn an additional step, thereby prompting the date hand 7 to be actuated by the amount of two days.
    In addition, when the date is changed from the last day of the month to the first day of the following month, the needle lever 70 moves from the final position to the initial position, thereby prompting the month unlocking finger. 75 to push the month wheel teeth 81 of the month wheel 80. Then, if the month wheel teeth 81 are pushed by the month release finger 75 and turns in the direction CCW at a predetermined angle, the part distal end 87 of the month jumper 86 and the month wheel teeth 81 temporarily disengage from each other, then engage again. In this way, the month wheel 80 and the month cam 27 rotate with a spacing of 30 °. In this way, it is possible to adjust the timepiece in advance of a month by turning the month display disc 5 which overlaps with the month wheel 80. Furthermore, in this case, each position of the convex portions 27a to 27e of the month cam 27 is also modified. Therefore, the short month date unlocking finger 35 can be moved corresponding to the long month and the short month.
    The operation described above is carried out repeatedly, further allowing the automatic calendar mechanism 10 of this embodiment to set the date wheel 50 in advance to the amount of a day, and prompting the 'date hand 7 to be actuated in the amount of one day on the last day of the long month. Then, the automatic calendar mechanism 10 sets the date wheel 50 in advance to the amount of two days, and prompts the date hand 7 to be actuated in the amount of two days on the last day of the short month, thereby displaying the dated. In addition, the automatic calendar mechanism 10 of this embodiment displays the month by turning the month display disc 5 to adjust the timepiece in advance of a month.
    According to the present embodiment, without the need to use a complicated planetary gear mechanism as disclosed in the prior art, it is possible to configure the automatic calendar mechanism 10 using a simple configuration including the wheel month wheel 80, the short month date drive wheel 25, the short month date unlocking finger 35, the date wheel drive wheel 40, and the date wheel 50 having the end finger month 53. In addition, the month wheel 80 rotates around the first axis C1, and the date wheel 50 rotates around the second axis C2. Consequently, in comparison with the prior art in which the month wheel 80 and the date wheel 50 are arranged coaxially with one another, it is possible to have more freely any means of displaying the month. such as the month display disc 5 which fits with the month wheel 80 and any date display means such as the date hand 7 which fits with the date wheel 50. Consequently, it is possible to make available the automatic calendar mechanism 10 which makes possible a simple configuration and which is very advantageous in terms of free arrangement for displaying a month and a date.
    In addition, the automatic calendar mechanism 10 includes the month cam 27 which rotates synchronously with the month wheel 80, and the short month date unlocking rocker 30 which rotates around the month cam 27 while coming into sliding contact with the convex portions 27a to 27e which correspond to the short month and the long month. Accordingly, the short month date unlocking finger 35 can reliably move corresponding to the short month and the long month using the simple configuration, and the date wheel 50 can turn the last day of the short month using the short month date unlocking finger 35. Therefore, it is possible to make available the automatic calendar mechanism 10 which makes possible a simple configuration and which is very reliable.
    In addition, the needle lever 70 moves from the initial position to the final position in response to the rotation of the date cam 61. Consequently, the date indicator wheel 67 meshing with the teeth of lever 74 of the needle lever 70 can rotate in the direction CW, and the date hand 7 can move from the position indicating the first day "1" of the month which corresponds to the initial position to the position indicating the last day "31" of the long month which corresponds to the final position. In addition, when the follower part 71 moves from the outermost part 63 to the innermost part 64, the needle lever 70 instantly moves from the final position to the initial position by the pressure transmitting the energy of the return wheel 78. Consequently, the date indicator wheel 67 meshing with the lever teeth 74 of the needle lever 70 can rotate in the direction CCW, and the date hand 7 can move instantly from the position indicating the last day "31" of the long month which corresponds to the final position in the position indicating the first day "1" of the month which corresponds to the initial position. As described above, according to the present embodiment, the date hand 7 can perform a backward movement operation, and it is therefore possible to produce a preferred date display. Furthermore, since the date cam 61 rotates synchronously with the date wheel 50, the above-described reverse movement of the date hand 7 can be performed independently of the short month and the long month. In addition, the month release finger 75 rotates the month wheel 80 in response to movement of the needle lever 70 from the final position to the initial position. Consequently, independently of the short month and the long month, it is possible to adjust the timepiece in advance of a month in the month display means such as the month display disc 5 which s 'nested with the month wheel 80.
    In addition, according to the movement 100 and the timepiece 1 of this embodiment, it is made available the automatic calendar mechanism 10 which makes possible a simple configuration and which is very advantageous in terms of arrangement free to display a month and a date. Consequently, it is possible to provide the movement 100 and the timepiece 1 which are very reliable and advantageous.
    Examples of Modification of the Embodiment Later, the examples of modification of the embodiment will be described.
    [0100] FIG. 5 is an explanatory view of an automatic calendar mechanism 10A according to a first example of modification of the embodiment.
    The automatic calendar mechanism 10 according to the embodiment is configured so that the month cam 27, the short month date drive wheel 25, and the short month date unlocking finger 35 rotate around the first axis C1, and the date wheel drive wheel 40 and the date finger 42 rotate about a predetermined axis which is different from the first axis C1 (cf. FIG. 2).
    However, as in the automatic calendar mechanism 10A according to the first example of modification of the embodiment which is illustrated in FIG. 5, it is possible to adopt a configuration in which the month cam 27, the short month date drive wheel 25, and the wheel drive wheel 40 are arranged coaxially with one another. other so that the month cam 27, the short month date drive wheel 25, and the wheel drive wheel 40, the short month date release finger 35, and the date finger 42 rotate around the first axis C1.
    According to the first example of modification of the embodiment, it is possible to miniaturize the automatic calendar mechanism 10A by arranging the month cam 27, the short month date drive wheel 25, and the wheel drive 40 coaxially with each other.
    [0104] FIG. 6 is an explanatory view of an automatic calendar mechanism 10B according to a second example of modification of the embodiment.
    In the automatic calendar mechanism 10 according to the embodiment, the date cam 61 and the return wheel 78 encourage the needle lever 70 to go back and forth between the initial position and the final position, actuating in this way the date hand 7 to go back and forth with a fan shape in the date display area 6 (see fig. 1).
    In contrast, as in the automatic calendar mechanism 10B according to the second example of modification of the embodiment which is illustrated in FIG. 6, a date hand 7B can be operated in the CW direction in the date display area 6.
    As illustrated in FIG. 6, the date hand 7B is attached to the date wheel 50. The date hand 7B is supported so that the nearest end portion can rotate around the second axis C2. The distal end portion of the date hand 7B indicates the numbers from "1" to "31" which respectively display the dates marked as a ring in the date display area 6 of the dial 2, L ' date hand 7B is actuated in the CW direction by turning synchronously with the date wheel 50.
    In addition, a month unlocking finger 75B is carried by the date wheel 50. The month unlocking finger 75B is formed so that the distal end protrudes towards the month wheel 80. The finger month release 75B is supported so that the nearest end is rotatable about the second axis C2 in the direction CW. The month unlocking finger 75B rotates synchronously with the date wheel 50, and pushes and rotates the month wheel 80 on the last day of each month.
    According to the second example of modification of the embodiment, it is possible to adjust the timepiece in advance of one month in the month display disc 5 which is nested with the month wheel using a simple configuration in which the month unlocking finger 75B is carried by the date wheel 50.
    Without being limited to the embodiment described above with reference to the drawings, the present invention can adopt different examples of conceivable modification in its technical scope.
    The embodiment uses the return wheel 78 which includes the hairspring part 79 as an element transmitting energy to transmit energy to the needle lever 70 in the direction closest to the month wheel 80, but is not limited to it. Therefore, for example, a coil spring can be used as an energy transmitting element to transmit energy to the needle lever 70.
    The embodiment employs the month display disc 5 as the month display means, but is not limited thereto. Consequently, as a means of displaying the months, it is possible to adopt a configuration in which the characters for the display of the months are marked in the dial 2 to be indicated by a month hand. In addition, the embodiment and the second example of modification according to the embodiment employ the date hands 7 and 7B respectively as the date display means, but are not limited thereto. Therefore, as a date display means, it is possible to adopt a configuration in which the characters for the date display are marked in a date display disc and the characters for the date display are exposed through a date window.
    In addition, configuration elements according to the embodiment described above can be replaced appropriately by the known configuration elements without departing from the scope of the independent claims of the attached game.
    权利要求:
    Claims (7)
    [1]
    Claims
    1. Automatic calendar mechanism (10), comprising:
    a month wheel (80) which rotates around a first axis (C1) once a year;
    a short month date drive wheel (25) which rotates around the first axis (C1) once a day;
    a short month date unlocking finger (35) which is carried by the short month date drive wheel (25) and which rotates synchronously with the short month date drive wheel (25) by moving;
    a date wheel drive wheel (40) which has a date finger (42) and which rotates once a day; and a date wheel (50) which has an end of month finger (53) and a toothing (51) pushed by the date finger (42) once a day and which rotates around a second axis (C2) once a month, characterized in that the short month date unlocking finger (35) rotates the date wheel (50) by pushing the month-end finger (53) on the last day of a short month, which is a month with 30 days or less.
    [2]
    2. Automatic calendar mechanism (10) according to claim 1, further comprising:
    a month cam (27) which, on an external peripheral surface, has a convex part and a concave part which correspond to the short month and to a long month which is a month having 31 days, and which is arranged coaxially with the month wheel (80) and which rotates synchronously with the month wheel (80); and a short month date unlocking lever (30) which is rotatably disposed relative to the short month date drive wheel (25) and one end portion of which engages in sliding contact with the convex portion and the concave part of the month cam (27), which rotates around the month cam (27) in synchronism with the short month date drive wheel (25), characterized in that the finger short month date unlocking (35) is carried by the short month date unlocking lever (30).
    [3]
    3. Automatic calendar mechanism (10) according to claim 1 or 2, further comprising:
    a date indicator wheel (67) which actuates a date hand (7);
    a date cam (61) which rotates around the second axis (C2) in synchronization with the date wheel (50) and which has an outermost part (63) located at a maximum separation distance from the second axis ( C2) and an innermost part (64) located at a minimum separation distance from the second axis (C2); a needle lever (70) which has a follower part (71) in contact with the date cam (61) and a lever toothing (74) meshing with the date indicator wheel (67) and which can make back and forth between an initial position closest to the month wheel (80) and a final position farthest from the month wheel (80);
    an energy transmission element (78) which transmits a stress such that the needle lever (70) is biased towards the month wheel (80); and a month unlocking finger (75) carried by the needle lever (70), which pushes and turns the month wheel (80) on the last day of each month, characterized in that the needle lever (70) moves from the initial position to the final position due to the rotation of the date cam (61), and moves from the final position to the initial position due to the stress transmitted by the transmission element d energy (78) when the follower part (71) moves from the outermost part (63) to the innermost part (64), and in that the month release finger (75) rotates the month wheel (80) on the last day of each month in response to movement of the needle lever (70) from the final position to the initial position.
    [4]
    4. Automatic calendar mechanism (10) according to claim 1 or 2, characterized in that the date wheel (50) includes a month unlocking finger (75B) which pushes and rotates the month wheel (80) on last day of each month.
    [5]
    5. Automatic calendar mechanism (10) according to one of claims 1 to 4, wherein the date wheel drive wheel (40) and the short month date drive wheel (25) are arranged coaxially with each other.
    [6]
    6. Movement (100) including:
    an automatic calendar mechanism (10) according to one of claims 1 to 5.
    [7]
    7. Timepiece (1) comprising:
    a movement (100) according to claim 6.
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    同族专利:
    公开号 | 公开日
    CN105425572B|2019-03-19|
    CN105425572A|2016-03-23|
    CH710109A2|2016-03-15|
    JP2016057234A|2016-04-21|
    JP6344739B2|2018-06-20|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2014185499A|JP6344739B2|2014-09-11|2014-09-11|Auto-calendar mechanism, movement and watch|
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