JP6091942B2 - CALENDAR MECHANISM, MOVEMENT AND CALENDAR WATCH HAVING THE MECHANISM - Google Patents

Description

  The present invention relates to a calendar mechanism, and a movement and a calendar timepiece having the mechanism.

  In calendar clocks (hereinafter also referred to as “calendar clocks”), the date at the end of the month is corrected by feeding the date wheel two days to the date wheel at the end of a small month with 30 days or less per month. A calendar mechanism (hereinafter also referred to as “auto-calendar mechanism”) that minimizes the above is well known (for example, Patent Document 1).

  Providing this calendar mechanism, that is, an automatic calendar mechanism, with an instantaneous date feeding mechanism so that normal date feeding can be instantaneously performed at high speed has been proposed (Patent Documents 2 and 3).

  However, in the auto-calendar mechanism of Patent Document 2, in order to perform two-day feeding at the end of the small moon, the normal high-speed daily feeding mechanism is used for normal day feeding at the end of the small moon and the date wheel is used. The roller is pressed against a correction cam that has a cam surface in the form of an inclined surface that gradually increases in diameter over the entire circumference, and that has a month end cam surface that is inclined in a reverse direction when moving from the end of the month to the beginning of the month. At the end of the month, the roller presses the cam surface at the end of the month to rotate the date wheel for one day to feed additional dates. The structure is complicated because it requires a separate date feeding mechanism, and on the other hand, it is unavoidable that the daily load is structurally high.

  In addition, in the auto-calendar mechanism of Patent Document 3, in order to perform two-day feeding at the end of a small month, a normal high-speed daily feeding mechanism is used for normal day feeding at the end of the small month and Since only the end of the month is an additional date feed with another high-speed date feed mechanism for the end of the month, the end of the month is operated only at the end of the month. It is difficult to avoid the complexity of the structure because it requires a separate high-speed date feeding mechanism, and on the other hand, it has two date feeding mechanisms, although it is a high-speed date feeding mechanism, it is sufficiently effective to speed up the date feeding. It is hard to be done.

JP 2009-128119 A Japanese Patent No. 4246508 JP 2007-132944 A

  The present invention has been made in view of the above-mentioned points, and its object is to provide a calendar mechanism capable of performing two-day feeding by one high-speed date feeding mechanism at the end of a small moon and the mechanism. It is to provide a movement and a calendar watch equipped with the above.

The calendar mechanism of the present invention achieves the above-mentioned object,
The stroke of the date feeding claw that engages with the teeth of the date dial and pushes the teeth to perform the date feeding operation is increased. A high-speed daily feeding mechanism that performs daily feeding more than the daily feeding and a small moon whose number of days per month is 30 days or less are identified, and at the end of the small month, the high-speed daily feeding mechanism And a movable stroke control mechanism for performing minute feeding by the minute.

  In the calendar mechanism of the present invention, the stroke of the date feeding claw that engages with the teeth of the date dial and pushes the teeth to perform the date feeding operation is increased, and the date feeding claw with the increased stroke causes the date indicator teeth to move. Since it is provided with a high-speed daily feed mechanism that allows more daily feeds than a day's daily feed, normal daily feeds other than the end of the small moon are performed at high speed. There is provided a movable stroke control mechanism that identifies a small moon whose number of days in one month is 30 days or less and causes the high-speed date feeding mechanism to feed two days worth of data at the end of the month. Therefore, at the end of the small month, the date feeding claw having a large stroke can engage with the teeth of the date dial under the control of the high speed date feeding mechanism to perform the date feeding for two days at a high speed. In addition, in the calendar mechanism of the present invention, since the movable stroke control mechanism is combined with the high speed date feeding mechanism, the date feeding for two days can be performed by one high speed date feeding mechanism.

  In the above description, the “high speed” date feeding mechanism is configured to “activate the date during the time shorter than the time required for energy storage to engage with the teeth of the date dial and push the teeth to perform the date feeding operation. The energy is rapidly applied to the feeding claw, and the date feeding claw is used to push the teeth of the date wheel abruptly. This high-speed date feed typically refers to fast-to-instant date feed that is so fast that it is difficult for the user to follow the movement of date characters during date feed, and in practice, within a few seconds, typically It refers to an instantaneous date feed that occurs within a period of about 1 second or less. Therefore, the so-called “half-eye” state in which only half of the Japanese characters are visible during date feeding is not actually made visible to the user. However, it may proceed somewhat slower than that.

  In the calendar mechanism of the present invention, typically, the movable stroke control mechanism includes a small-moon recess that distinguishes a small moon from a large moon whose number of days is 31 a month, and a monthly cam that rotates once a year, A small-month-detecting cam follower for detecting a small moon and the date-feed claw, and a date-feed lever structure that is swingably supported on a support substrate; A month-end detecting section that allows the small-moon detecting cam follower to be fitted into the small-moon recess of the monthly cam, and the high-speed date feeding mechanism changes the date feeding by the date feeding claw daily. In order to carry out at a specific time, it has a date feeding lever drive mechanism for swinging the date feeding lever structure once a day, and at the end of the small moon, the date feeding lever structure The small moon detection cam follower fits into the small moon recess of the month cam Configured to perform two days of the date feeding swung from the pre-swing position I'm day to feed complete swing completion position.

  In that case, since the entire control of the movable stroke control mechanism can be performed through the swing of the date feeding lever structure, the space can be effectively used while avoiding the complexity of the structure.

  In the calendar mechanism of the present invention, typically, the date indicator includes a month end recess, the date feeding lever structure includes a month end detection lever engaging portion, and the month end detection portion includes the month end recess of the date indicator. A date feeding lever engaging portion that engages with the month end detecting lever engaging portion of the date feeding lever structure, and a month end detecting lever having a month end detecting end that can be engaged with the month end recess of the date indicator. And at the end of the small month, the end of the month detecting end of the end of month detecting lever is fitted into the end of the month end of the date indicator, whereby the small portion of the date feeding lever structure with respect to the small moon recess of the month cam The month detecting cam follower is allowed to be fitted, and the date feeding lever structure is configured to assume a pre-swing position.

  In that case, the month end detection can be performed using the month end recess of the date indicator, and the month end control of the small moon can be reliably performed. In this case, in the calendar mechanism of the present invention, typically, the date feeding lever structure is connected to the date feeding lever main body and the date feeding lever main body so as to be rotatable, and is provided with the date feeding claw at the tip. And a feed claw lever.

  In the calendar mechanism according to the present invention, instead of forming the month end recess in the date indicator as described above, the month cam is provided with 24 teeth and is rotated by two teeth a month. The moon moon recess is provided at the rear side of the moon, and the month end detection unit is formed with two month feeding protrusions formed at intervals in the circumferential direction at a position near the month end of the date indicator, and the month feeding A month feeding lever having a month end detecting end engageable with the protrusion and rotating the month cam by one tooth via the moon star wheel when the month end detecting end is engaged with the month feeding protrusion; The date feeding lever structure of the date feeding lever structure when the month feeding lever is rotated by the first month feeding projection of the two month feeding projections to rotate the month cam by one tooth. The small moon detection cam follower fits into the small moon recess of the month cam, and May be configured as a lever structure swings the pre swing position.

  In that case, month-end detection can be performed using the month feeding protrusion of the date indicator, and month-end control of the small moon can be reliably performed.

  In the calendar mechanism of the present invention, typically, the high-speed date feeding mechanism includes a date indicator wheel provided with one of a pin and an arc-shaped elongated hole, and the one of the pin and the arc-shaped elongated hole; A date-turning cam provided with the other of the pin and the arc-shaped elongated hole to be engaged, a date-turning cam follower forming a date follower of the cam and a cam follower of the cam, and a date feeding lever on the other end side An actuating lever having a date feeding lever engaging portion that engages with the actuating lever engaging portion of the structure.

  In that case, high-speed daily feeding can be performed reliably. In this case, the cam surface of the date turning cam is different from the cam surface of the conventional calendar mechanism that feeds only one day, so that the date can be fed for two days at the end of the month. The operation lever is engaged with the date driving cam follower so as to allow the large-stroke swing from the pre-swing position to the swing completion position of the feed lever structure.

  However, as long as high-speed daily feeding is permitted to allow large stroke swinging from the pre-swing position to the swing completion position of the date feeding lever structure, the combination of cam and lever, etc. may be different. Good.

The calendar mechanism of the present invention includes a clutch lever that is linked to the date correction operation, and the clutch lever is linked to the date correction operation so that the small moon detection cam follower of the date feeding lever structure is the small moon of the month cam. You may make it prevent fitting in a recessed part.
As a result, the date and month can be corrected at any time without restriction on the month or day, whether it is the end of a small month or a large month.

  Further, the clutch lever may block the date feeding claw of the date feeding lever structure from engaging with the teeth of the date dial in conjunction with the date correction operation.

  The calendar mechanism of the present invention includes a clutch lever that is linked to a date correcting operation, and the clutch lever is a first clutch lever that is linked to the date correcting operation, and a small moon of the date feeding lever structure that is linked to the first clutch lever. There may be provided a second clutch lever for preventing the detection cam follower from fitting into the small moon recess of the month cam and preventing the date feeding claw from engaging with the teeth of the date indicator.

  The movement of the present invention has the calendar mechanism as described above in order to achieve the above object. In addition, the calendar timepiece of the present invention has the calendar mechanism as described above in order to achieve the object.

  According to the present invention, two days of date feeding can be performed at high speed by one high-speed date feeding mechanism at the end of a small month.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory plan view showing an appearance of a calendar timepiece according to a preferred embodiment of the present invention having a movement according to a preferred embodiment of the present invention equipped with a calendar mechanism according to a preferred embodiment of the present invention. FIG. 2 is an explanatory plan view of a timepiece having a movement provided with the calendar mechanism of FIG. 1. FIG. 3 shows a part of FIG. 2 in cross-section, where (a) is a cross-sectional explanatory view taken along the line IIIA-IIIA in FIG. 2, and (b) is a cross-sectional explanatory view taken along the line IIIB-IIIB in FIG. 2 shows a part of FIG. 2 in section, (a) is a sectional view taken along the line IVA-IVA in FIG. 2, and (b) is a sectional view taken along the line IVB-IVB in FIG. FIG. 3 is an explanatory plan view similar to FIG. 2 when the timepiece of FIG. 1 is in a state in which a date is being sent from August 30th to 31st. FIG. 3 is an explanatory plan view similar to FIG. 2 when the timepiece of FIG. 1 is in a state in which date feeding to August 31 is completed. FIG. 3 is an explanatory plan view similar to FIG. 2 when the timepiece of FIG. 1 is in a state immediately before the date feeding from August 31 to September 1 is performed. FIG. 3 is an explanatory plan view similar to FIG. 2 when the timepiece of FIG. 1 is in a state in which a date is being sent from August 31 to September 1; The same plane as in FIG. 2 when the watch of FIG. 1 is in the middle of the date feeding from August 31 to September 1 and in the middle of the month feeding from August to September Illustration. FIG. 3 is an explanatory plan view similar to FIG. 2 when the timepiece of FIG. 1 is in a state in which the date feed to September 1 and the month feed are completed. FIG. 3 is an explanatory plan view similar to FIG. 2 when the watch of FIG. 1 is in a state immediately before the date feeding from September 29 to September 30 is performed. FIG. 3 is an explanatory plan view similar to FIG. 2 when the watch of FIG. 1 is in a state immediately before a date feed from September 30 to October 1 (date feed at the end of a small month) is performed. FIG. 3 is an explanatory plan view similar to FIG. 2 when the watch of FIG. 1 is in the middle of the first (advance additional) date feeding from September 30 to October 1; FIG. 3 is an explanatory plan view similar to FIG. 2 when the timepiece of FIG. 1 is in a state where the first (advance additional) date feeding from September 30 to October 1 is completed. FIG. 3 is an explanatory plan view similar to FIG. 2 when the timepiece of FIG. 1 is in the middle of the second date feeding (after the dated advance) from September 30 to October 1; The watch in FIG. 1 is in the middle of the second date feed from September 30 to October 1 (after the advance date) and in the middle of the month feed from September to October. Plane explanatory drawing similar to FIG. 2 at a certain time. FIG. 3 is an explanatory plan view similar to FIG. 2 when the timepiece of FIG. 1 is in a state where two daily feeds and monthly feeds from September 30 to October 1 are completed. A calendar clock according to a preferred modification of the present invention having a movement according to a preferred modification of the present invention equipped with a calendar mechanism according to a preferred modification of the present invention has a date feed from September 29 to September 30. FIG. 3 is an explanatory plan view similar to FIG. 2 in a state immediately before being performed. The watch in FIG. 18 is in a state where the first month feeding (month feeding when entering the end of the month from before the end of the month) is performed when the date feeding from September 29 to September 30 is performed. Plane explanatory drawing similar to FIG. 18 shown. FIG. 19 is an explanatory plan view similar to FIG. 18 when the timepiece of FIG. 18 is in a state immediately before a date feed from September 30 to October 1 (date feed at the end of a small month) is performed. FIG. 19 is an explanatory plan view similar to FIG. 18 when the watch of FIG. 18 is in a state where the first (advance additional) date feeding from September 30 to October 1 is completed. The clock in FIG. 18 is in the middle of the second date feed from September 30 to October 1 (after the advance date send) and in the middle of the month feed from September to October. Plane explanatory drawing similar to FIG. FIG. 19 is an explanatory plan view similar to FIG. 18 when the timepiece of FIG. 18 is in a state where two daily feeds and monthly feeds from September 30 to October 1 are completed. A modification of the high-speed date feeding mechanism is shown, (a) is an explanatory plan view showing an example in which the operating lever itself having a cam follower that engages the date feeding cam has a date feeding claw, and (b). FIG. 5 is an explanatory plan view showing an example in which a date feeding lever itself that engages with an operating lever having a cam follower that engages with a date feeding cam integrally has a date feeding claw. Plane explanatory drawing which showed the modification of the date correction mechanism in a calendar mechanism. An explanatory plan view showing a state in which the winding stem is pulled out by one stage in a modification of the date correction mechanism. An explanatory plan view showing a state in which the winding stem is pulled out by two stages in a modification of the date correction mechanism. VA-VA sectional view explanatory drawing which shows a part of FIG. 25 in a cross section.

  Next, some preferred embodiments of the present invention will be described based on preferred examples shown in the accompanying drawings.

  1 to 17 show a calendar timepiece of a preferred embodiment of the present invention having a movement 2 of a preferred embodiment of the present invention equipped with an auto-calendar mechanism 1 as a calendar mechanism of a preferred embodiment of the present invention. A timepiece 3 with a calendar mechanism is shown.

  The calendar timepiece 3 has an appearance 4 as shown in FIG. That is, the timepiece 3 includes a time display hand 11 including an hour hand 11a, a minute hand 11b, and a second hand 11c so as to be rotatable around the central axis C in a clockwise direction C1. The dial 12 of the timepiece 3 has a typesetting 12a representing the position at the hour, and a month / day display window 13 having a month display area 13a and a date display area 13b at approximately the 3 o'clock position. Reference numeral 14 denotes a watch case.

  In the examples shown in the cross-sectional views of FIGS. 3A and 3B and FIGS. 4A and 4B, the hour hand or hour wheel 16a with the hour hand 11a attached to the tip, and the minute hand 11b at the tip. The attached minute wheel 16b and the second wheel or fourth wheel 16c having the second hand 11c attached to the tip thereof are connected to the center axis C via a center pipe 7b supported by a main plate 6 or a second receiving (not shown). The wheel portion 16b of the hour wheel 16a or the cylindrical gear 16d, the minute gear 16e of the minute wheel 16b or the second gear of the minute wheel 16b, and the gear portion of the fourth wheel 16c or the fourth gear (not shown) are mutually supported. It is rotated by a handwheel train including other train trains connected to a drive source (not shown) such as a barrel with a clock spring.

  As shown in FIGS. 2 and 3, (a) and (b), and FIGS. 4 (a) and (b) in addition to FIG. In the watch case 14, a hour wheel 16 a that is housed behind the dial 12 and in front of the back cover (not shown) and rotated by a rotation driving source such as a barrel or a motor through a wheel train wheel (not shown) The hour hand 11a, the minute hand 11b, and the second hand 11c are attached to the respective leading ends, including the minute wheel 16b and the second wheel 16c. A crown 15 is attached to the tip of the winding stem 15a of the movement 2.

  The timepiece 3 includes a generally annular date wheel 20 that extends along the vicinity of the inner periphery of the case 14. As can be seen from FIGS. 2, 3 (a) and 3 (b), and FIG. 4 (a) and (b), etc., the date indicator 20 includes a large-diameter annular plate-shaped date indicator wheel 21, A large-diameter cylindrical portion 22a extending in parallel in the axial direction from the inner edge of the date indicator wheel portion 21, and a small-thick thick bowl-shaped portion 22b extending radially inward from the lower end of the large-diameter cylindrical portion 22a; A small-diameter thick cylindrical portion 22c extending parallel to the axial direction from the inner edge of the bowl-shaped portion 22b, a date gear 23 formed on the inner peripheral edge on the lower end side of the small-diameter thick cylindrical portion 22c, At the specific part Q1 in the circumferential direction of the bowl-shaped part 22b, the end-of-month recess 24 formed on the inner peripheral edge of the thick-walled bowl-shaped part 22b and the thick wall at another specific part Q2 in the circumferential direction of the thick-walled bowl-shaped part 22b And a month feeding pin 25 as a protrusion formed on the dial side surface 22d of the hook-shaped portion 22b. In addition, in this specification, in (a) and (b) of FIG. 3 and (a) and (b) of FIG. 4 and the like, unless otherwise specified, “upper” means the time indicating hand 11. The side (the dial 12 side) is said.

  On the dial-side surface 21a of the date display wheel portion 21, date display characters LD representing 31 dates from 1 to 31 are displayed at equal intervals. The date gear 23 includes 31 teeth 26 at equal intervals. The C2 direction rotation of the date indicator 20 is regulated by the date jumper 27 including the date jump control claw portion 27a and the date jump control spring portion 27b. As can be seen from FIG. 3A and the like, the displacement in the thickness direction of the date dial 20 is regulated by the date dial holder 6 a attached to the main plate 6 so as to cover the date gear 23. A month indicator wheel guide pipe 6b is fitted to the date indicator holder 6a so as to rotatably surround the large-diameter cylindrical portion 16f of the hour wheel 16a.

  As can be seen from FIGS. 2 and 3 (a) and (b), and FIGS. 4 (a) and (b), etc., the month wheel 30 is slidably rotatable around the central axis C so as to be able to slide. , A moon star wheel structure 31 fitted to the month display wheel guide pipe 6b, and a plate-shaped moon plate 32 fixed to the dial side surface of the moon star wheel structure body 31 at the inner peripheral edge. On the dial side surface 32a of the lunar plate 32, month display characters LM representing 12 months from January (JAN) to December (DEC) are displayed at equal intervals. The moon star wheel structure 31 includes a moon star wheel main body 33 having twelve teeth 33a and valleys 33b on the outer periphery, and a month intermediate first wheel 34 integrally formed with the moon star wheel 33 and having a large number of teeth 34a. Is provided. The rotation of the moon star wheel 33 in the C1 direction is regulated by a moon jumper 33c having a moon jump control claw portion and a moon jump control spring portion. The month wheel 30 is meshed with the month cam wheel 36 via the month middle second wheel 35 meshed with the month middle first wheel 34. The month cam wheel 36 rotatable around the central axis D includes a month cam body, that is, a month cam 37 and a month cam gear 36a. The month cam 37 is a large-diameter circle corresponding to the 31st month of the month. An arcuate cam surface 37a and a small-diameter arcuate portion or a small-moon concave portion 37b corresponding to a small moon whose one month is 30 days or less are provided. 16g is a month indicator.

  A month feeding lever 38 is supported on the date dial holder 6a so as to be rotatable around the central axis K in the K1 and K2 directions. The input side arm portion 38a of the month feeding lever 38 can be engaged with the month feeding pin 25 at the tip portion, and is rotated in the K1 direction by the month feeding pin 25 at the end of the month. A month feeding claw 38c is attached to the tip of the output side arm portion 38b of the month feeding lever 38, and is engaged with the teeth 33a of the month star wheel 33 each time the month feeding lever 38 is rotated in the K1 direction. Then, the moon star wheel 33 is rotated by one tooth in the C1 direction. 38d is a month feeding lever spring, and 6e is a back object presser. The month feeding claw 38c is elastically biased counterclockwise by the month feeding lever spring 38d with respect to the month feeding lever 38, and in the state shown in FIG. The relative rotation of is prohibited.

  A date feeding lever structure 40 is rotatably fitted to the large-diameter portion 6c of the month indicating vehicle guide pipe 6b so as to overlap the date dial holder 6a. The date feeding lever structure 40 includes a plate-like date feeding lever 41 and a date feeding claw 42 which form the main body of the structure 40. The date feeding lever 41 that is slidably and rotatably fitted to the month indicating vehicle guide pipe 6b in the circular opening 41a includes an operating lever engaging portion 43 that engages with a high-speed date feeding mechanism 50 that will be described in detail below, and a month end detection. A lever engagement arm portion 44 and a small moon detection cam follower 45 are provided. The date feeding claw 42 is supported by the date feeding lever 41 so as to be rotatable about the central axis E in the directions E1 and E2 at the arm portion 41b of the date feeding lever 41 on the small moon detection cam follower 45 side. E1 direction elastic biasing force is received by the claw spring 42a, and further relative rotation in the E1 direction is prohibited by an interlocking portion (not shown) in the state shown in FIG.

  The operating lever engaging portion 43 of the date feeding lever 41 of the date feeding lever structure 40 is arranged so that the high-speed date feeding mechanism 50 performs a central axis line when the high-speed date feeding mechanism 50 performs a high-speed date feeding instruction operation once a day. Rotating in the C2 direction around C, the date feeding claw 42 of the date feeding lever structure 40 engages with the tooth 26 of the date gear 23 and pushes it in the C2 direction, thereby moving the date indicator 20 in the date feeding direction. Do.

  Between the end-of-month detection lever engaging arm 44 of the date feeding lever 41 and the end-of-month recess 24 of the thick flange 22b of the date indicator 20, it can be rotated around the central axis F in the directions F1 and F2, and the end of the month. A month end detection lever 46 that receives an elastic biasing force in the direction F1 by the detection lever spring 46f is provided. At the end of each month, the end 46b of the outer lever portion 46a of the month end detection lever 46 comes to a position facing the month end recess 24 of the date indicator 20.

  Normally, the small moon detection cam follower 45 of the date feeding lever 41 does not fit into the small moon recess 37b of the month cam 37 (except at the end of the month or the month). That is, the small moon detection cam follower 45 faces the large-diameter arc-shaped cam surface 37a of the lunar cam 37 of the lunar cam wheel 36 and contacts the large-diameter arc-shaped cam surface 37a in the large moon. In this state, before the date feeding, the date feeding claw 42 of the date feeding lever structure 40 reaches the normal swing position P0 that is swung by a normal amount in the C1 direction so that the date feeding of the day can be performed.

  The small moon detection cam follower 45 faces the small moon concave portion 37b of the month cam 37 in the small moon, but the rotation of the date feeding lever 41 by the month end detection lever 46 except at the end of the small moon. Therefore, the small moon detection cam follower 45 does not engage with the small moon concave portion 37b of the monthly cam 37 (that is, does not fit into the small moon concave portion 37b). The facing position (position on the same circumference as the large-diameter arc-shaped cam surface 37a) is taken. Even in this state, before the date feeding, the date feeding claw 42 of the date feeding lever structure 40 reaches the normal swing position P0 that is swung by the normal amount in the C1 direction so that the date feeding of the day can be performed.

  On the other hand, at the end of the small month, the end 46b of the month end detection lever 46 is fitted into the month end recess 24 under the action of the spring 46f, and the month end detection lever 46 is rotated in the F1 direction to rotate the date feeding lever 41 in the C2 direction. Since the movement is allowed, the small-moon detecting cam follower 45 is fitted into the small-moon concave portion 37b and engaged with the small-moon concave portion 37b. In this state, before the date feeding, the date feeding claw 42 of the date feeding lever structure 40 is swung larger than usual in the C1 direction so that the stroke becomes large and two days of date feeding can be performed at once. A pre-swing position P1 (FIG. 12 described later) is reached. The pre-swing position P1 is a position that is swung in the C1 direction larger than the normal swing position P0.

  The high-speed date feeding mechanism 50 includes a date indicator driving wheel 51 and a date indicator driving cam 52 that are rotatable in the H1 direction around the central axis H of the shaft-like protrusion protruding from the main plate 6, and J1 and J2 directions around the central axis J. And an operating lever 53 supported by the date dial holder 6a so as to be rotatable.

  A date driving wheel 51 in the form of a 24-hour wheel is provided with a date driving gear portion 51a formed on the outer periphery and meshed with a cylindrical gear 16d and an arc-shaped long hole 51b, and around the central axis H in the H1 direction in one day. It is rotated once. The date turning cam 52 concentric with the date indicator driving wheel 51 has an energy application cam surface portion 54a in which the outer diameter of the engagement portion with the cam follower gradually increases when rotated along the rotation direction H1, and is generally linear. The cam surface 54 includes an energy releasing cam surface portion 54b in which the outer diameter of the engagement portion with the cam follower is sharply reduced when rotated along the rotation direction H1. A date turning pin 55 that is loosely fitted in the arc-shaped elongated hole 51 is provided. The actuating lever 53 is engaged with the input lever 53 a having a cam follower 56 that engages with the cam surface 54 at the tip and the actuating lever engaging portion 43 of the date feeding lever 41 of the date feeding lever structure 40. And an output side lever portion 53b having a feed lever side engagement portion 57. The operating lever 53 receives the J1 direction elastic biasing force by the operating lever spring 53c.

  In the high-speed date feeding mechanism 50, when the date indicator driving wheel 51 is rotated in the H1 direction as the cylindrical gear 16d rotates in the C1 direction, the engagement pin loosely fitted in the arc-shaped elongated hole 51b as the rotation proceeds. 55 is turned in the day 51 and pushed in the H1 direction at the downstream end 51c of the long hole 51 of the wheel 51 to start turning the cam 52 in the H1 direction. When the date turning cam 52 starts to rotate in the H1 direction, the cam follower 56 engaged with the minimum diameter region 54c of the cam surface portion 54a for energy application in the cam surface 54 becomes the cam for energy application of the cam surface 54. When the H2 direction is relatively displaced along the surface portion 54a, the cam follower 56 of the operating lever 53 rises along the energy applying cam surface portion 54a and the operating lever 53 is rotated in the J2 direction.

  This rotational displacement in the J2 direction gradually continues until a specific time T1 when the cam follower 56 of the lever portion 53a of the operating lever 53 reaches the maximum diameter portion 54d. When the date indicator driving wheel 51 is rotated in the H1 direction beyond the time point T1, the cam follower 56 of the operating lever 53 that receives the biasing force in the J1 direction by the spring 53c substantially falls freely along the cam surface portion 54b for releasing energy. Rotate in the J1 direction so as to drop sharply. Accordingly, the operating lever 53 causes the date feeding lever side engaging portion 57 to rapidly rotate the date feeding lever structure 40 in the C2 direction.

  As a result, the date feeding claw 42 of the date feeding lever structure 40 is swung in the C2 direction at high speed, and the teeth 26 of the date indicator 20 at the closest position are fed at high speed in the C1 direction along with the high speed swinging. . This date feeding takes a J1 direction rotation position where the cam follower 56 of the operating lever 53 reaches the minimum diameter portion 54 c of the cam surface 54, and the date feeding lever structure 40 is moved according to the rotation position of the operating lever 53. When the rotation position rotated in the C2 direction as much as possible is taken, the process is completed. This position is a rocking completion position P2 (FIGS. 6 and 17) where the date feeding claw 42 completes the date feeding.

  Here, the high-speed rocking range is a range φ0 from the normal rocking position P0 to the rocking completion position P2 in a normal time other than the end of the big moon or small moon. The range φ1 from the swing position P1 to the swing completion position P2 (where φ1 = φ0 + Δφ).

  As described above, the movable stroke control mechanism 5 includes the month cam 37, the date feeding lever structure 40 including the date feeding lever 41 and the date feeding claw 42, and the date feeding lever at a specific time of the day of the end of the small moon. The month detection cam follower 45 of the structure 40 includes a month end detection unit that allows the month follower 37 to fit into the moon recess 37b. Here, the month end detection unit includes a month end detection lever 46 and a month end recess 24.

  In addition, 61 is movable between the date correction position U1 indicated by the imaginary line in FIG. 2 and the month correction position U2 indicated by the solid line. For example, the winding stem is rotated in one direction with the winding stem pulled out one step. When the date correction position U1 is set, the date correction is performed by meshing with the date gear 23 of the date wheel 20 and turning the date gear 23 in the C2 direction, and the other direction with the winding stem pulled out one step. When the month correction position U2 is set by turning the winding stem, it is engaged with the vehicle of the month correction wheel train 62 and the month intermediate first wheel 34 is rotated in the C1 direction via the month correction wheel train 62. Is configured to correct the month.

  The operation of the calendar mechanism 1 of the calendar timepiece 3 according to a preferred embodiment of the present invention constructed as described above will be described with reference to FIGS. 1, 2, 3 (a) and (b) and FIG. 4 (a) and ( In addition to b), it will be described in detail with reference to FIGS.

  The state shown in FIG. 2 is that the calendar clock 3 is about 24 o'clock on August 30 or around 0:00 on August 31 just before the date is moved from the “30” day of the large month to the “31” day. It is a state. Since it is a large month, the small moon detection cam follower 45 of the date feeding lever 41 of the date feeding lever structure 40 is in contact with the large-diameter arcuate cam surface portion 37 a of the month cam 37, and the date feeding claw 42. Is normally located at the swing position P0. Further, the cam follower 56 of the actuating lever 53 is just in the state immediately before entering the energy releasing cam surface portion 54b after reaching the maximum diameter portion 54d by going up the energy applying cam surface portion 54a of the date turning cam 52. Therefore, the operating lever 53 takes the position rotated to the maximum in the J2 direction, and the date feeding lever side engaging portion 57 of the operating lever 53 has its rotating position defined by the large-diameter cam surface portion 37a of the month cam 37. The date feeding lever 41 in the state is separated from the operating lever engaging portion 43. Further, the date jumper 27 is in a state where the date indicator 20 is regulated. In addition, since it is the date feed from the “30” day in August to the “31” day and has not reached the stage past the end of the big moon (31st), the month feed pin 25 is still slightly away from the month feed lever 38. In a remote location.

  2, when the cam follower 56 of the operating lever 53 turns in the day and exceeds the maximum diameter portion 54d of the cam 52, the cam follower 56 is used for releasing energy as shown in FIG. It begins to drop at a stretch along the cam surface portion 54b. The operating lever 53 is suddenly rotated in the J1 direction in accordance with the displacement of the cam follower 56 along the energy releasing cam surface portion 54b, whereby the date feeding lever 41 is suddenly rotated in the C2 direction. The claw 42 engages with the teeth 26 of the date gear 23 located at the closest forward position, and the date indicator 20 is suddenly rotated in the C2 direction. The state shown in FIG. 5 is a state in which the apex of the jumping claw portion 27a of the date jumper 27 reaches the apex of the tooth 26 of the date gear 23 as the date gear 23 of the date dial 20 rotates in the C2 direction. In the 13 day display area 13b, 30 and 31 are located in half (a state that occurs in a very short time), and this time point is after a lapse of a short time from the time point of FIG. It is practically the same as time 2, that is, from 24 o'clock on August 30 to around 0:00 on August 31.

  Then, as shown in FIG. 6, with the passage of a short time thereafter, the date jumper 27 suddenly turns the date wheel 20 in the C2 direction for half a day and the jumping claw portion 27a is next to the date gear 23. It falls between the teeth 26, 26 and enters the state of setting the date dial 20 again. As a result, the date character LD in the date display area 13b of the date display window 13 becomes “31”. On the other hand, the cam follower 56 continues to drop along the energy release cam surface portion 54b, and the operating lever 53 further rapidly rotates in the J1 direction in accordance with the displacement of the cam follower 56 along the energy release cam surface portion 54b. Is done. However, at this stage, since the date indicator 20 has already been rotated in the C2 direction by the operation of the date jumper 27, the date feeding claw 42 at the tip of the date feeding lever 41 and the front tooth 26 of the date indicator 20 There is a gap. This time is also after a lapse of a little time from the time of FIG. 2 or FIG. 5, and is actually the same as the time of FIG. 2 or FIG. It's about time. Whether the time of 24 o'clock (0 o'clock) is the time shown in FIG. 2 or the time shown in FIG. 6 is set to the time in the meantime (for example, the time shown in FIG. 5). You may keep it.

  From the state shown in FIG. 2 to the state shown in FIG. 6 through the state shown in FIG. 5 is an operation that occurs in the same manner in all day feeds other than the end of the small month.

  Next, at the end of the big month, the daily feed and the monthly feed when moving from about 24 o'clock on August 31 to about 0 o'clock on September 1 will be described with reference to FIGS.

  The date feed itself at the end of the month is actually the same as the date feed described with reference to FIGS. In other words, FIG. 7 shows the date feed from the “31” day of the large month to the next day (September) from “14:00” on August 31 to around midnight on September 31. From the 30th day of the big month to the 31st day from 24 o'clock on August 30 to around 0 o'clock on August 31 as far as the state of the related parts related to day feeding is concerned. This is a state that is practically the same as FIG. 2 showing the state immediately before the date feeding is performed.

  Speaking of month feeding, from 24 o'clock on August 31 to around 1 o'clock on September 1st, the day feeding from "31" day of the big month to the next day (September) In the state of FIG. 7, which is the state immediately before being performed, the month feed pin 25 in the specific part Q <b> 2 of the date indicator 20 is in a position close to the end portion (outer end portion) of the input side arm portion 38 a of the month feed lever 38. It is in a state just before hitting the outer end.

  Fig. 8 shows the date from August 31 to 24 o'clock to September 1 o'clock from the 31st day of the big month to the next day (September). As far as the status of related parts related to date feeding is concerned, from 30 o'clock on August 30th to about 31 o'clock on August 31st, from 02:00 on August 31st This is a state that is substantially the same as FIG.

  From 24 o'clock on August 31 to around 0 o'clock on September 1st, the next day (September), which is the next day from the “31” day of the big month, is in progress. When the top of the jumping claw portion 27a of the date jumper 27 reaches the state of FIG. 8, which is in contact with the top of the tooth 26 of the date gear 23, the month feed pin 25 of the specific part Q2 of the date dial 20 Along with the rotation in the C2 direction, the lever 38 is contacted with the end 38a of the month feeding lever 38 and rotated in the K1 direction around the central axis K, whereby the month feeding claw 38c at the tip of the month feeding lever 38 is moved to the moon star wheel. The month wheel 30 is inserted into the valley portion 33 b of the star 33 and the moon wheel 30 is started to rotate via the moon star wheel 33 in relation to the teeth 33 a of the moon star wheel 33.

  From 24 o'clock on August 31 to around 0 o'clock on September 1st, the next day (September), which is the next day from the “31” day of the big month, is in progress. When the top of the jumping claw portion 27a of the date jumper 27 reaches the state shown in FIG. 9 in which the top of the tooth 26 of the date gear 23 is exceeded, the month feed rotated in the K1 direction by the month feed pin 25. The lever 38 rotates the month star wheel 33 in the C1 direction with the month feeding claw 38c, and the apex of the jumping claw portion of the month jumper 33c comes into contact with the apex of the teeth 33a of the month star wheel 33. In this state, the month wheel 30 is in a half-turned state. In the month display area 13a of the month / day display window 13, the month display character LM of AUG representing August and the month display character LM of SEP representing September are displayed. The middle part of is located. At this time, the date feeding claw 42 is still between the normal swing position P0 and the swing completion position P2.

  The state of FIG. 10 in which the date feed from the “31” day of the large moon to the next day (September) “1” day is completed from 24:00 on August 31 to 0:00 on September 1 At the same timing, the jumping claw portion of the moon jumper 33c also falls on the valley portion 33b between the next adjacent teeth 33a, 33a of the moon star wheel 33, and the month wheel 30 is moved at a predetermined rotational position. Correct. In this normal position, the display character “SEP” indicating September as the month display character LM on the moon plate 32 has just reached the month display area 13a of the month / day display window 13 and the month display is performed. The rotation of the moon star wheel 33 in the C1 direction is transmitted to the month cam wheel 36 via the first and second intermediate wheels 34 and 35, and the moon recess 37b indicating September in which the month cam 37 is a small moon. Adopts a rotation position where the small-month-detecting cam follower 45 of the date feeding lever 41 can face.

  FIG. 10 shows a state in which the date feed from the “31” day of the large moon to the next day (September) “1” day is completed from 24:00 on August 31 to 0:00 on September 1 However, as far as the state of related parts related to date feeding is concerned, the date feeding from the 30th day of the big month to the 31st day will be around 20:00 on August 30 or around 0:00 on August 31st. This is a state that is substantially the same as FIG. 6 showing the completed state.

  Although it is near the end of the month, it is not at the end of the month, for example, around 24:00 on September 29 or around midnight on September 30, as shown in FIG. Take a state. In this state, the date wheel 20 is in the state of one day ahead by being 29 days instead of 30 days, and the small moon detection cam follower 45 of the date feeding lever 41 is a month cam because it is a small moon. Except for the point which faces the small moon recess 37b of 37, it is practically the same as the state of FIG.

  In this state, with the passage of time, the hour wheel 16a rotates in the C1 direction, and accordingly, the date driving wheel 51 rotates in the H1 direction around the central axis H, and at the end 51c of the arc-shaped elongated hole 51b. Since the date turning cam 52 is turned in the H1 direction, the cam follower 56 of the operating lever 53 suddenly falls along the energy release cam surface portion 54b beyond the maximum diameter portion 54d of the cam 52, and accordingly the date feeding lever 41 The date feeding claw 42 is rapidly rotated in the C1 direction via the wheel and the date indicator 20 is rapidly rotated in the C2 direction by one tooth.

  When the date indicator 20 enters the 30th of the month with the C2 direction rotation, the month end recess 24 of the date indicator 20 faces the end 46b of the outer lever portion 46a of the month end detection lever 46, so that the date feeding lever 41 is C1. The small moon detection cam follower 45 of the date feeding lever 41 is fitted in the small moon recess 37b of the month cam 37, and the month end detection lever 46 is rotated in the F1 direction to rotate the outer lever of the month end detection lever 46. The end 46b of the portion 46a fits into the end-of-month recess 24 of the date dial 20. When the date feeding lever 41 is rotated in the C1 direction, the date feeding claw 42 is rotated in the E1 direction with respect to the date feeding lever 41, and is moved forward by one of the teeth 26 of the date indicator 20, that is, in the C2 direction. It moves so that it can engage with the tooth 26 on the near side by one in the C2 direction rather than the normal engagement.

  At the end of the small moon, that is, around 24:00 on September 30, that is, around 0:00 on October 1, the state becomes as shown in FIG. This state is a state immediately before daily feeding and monthly feeding are performed, and accordingly, the cam follower 56 of the operating lever 53 reaches the maximum diameter portion 54d of the date turning cam 52. In this state, the end 46 b of the outer lever portion 46 a of the month end detection lever 46 is fitted in the month end recess 24 of the date indicator 20, and the small moon detection cam follower 45 of the date feeding lever 41 is fitted in the small month recess 37 b of the month cam 37. Therefore, the date feeding lever 41 and the date feeding claw 42 supported by the date feeding lever 41 adopt a pre-swing position P1 in which the date feeding lever 41 is swung in the C2 direction. The pre-swing position P1 is a position that is extra swayed in the C2 direction by Δφ = (φ1-φ0) as compared to the normal swing position P0. The other points are the same as the states of FIG. 11 and FIG.

  When the cam follower 56 of the actuating lever 53 turns in the day and exceeds the maximum diameter portion 54d of the cam 52 after a little time has elapsed from the state of FIG. 12, the cam follower 56 is used for releasing energy as shown in FIG. It begins to drop at a stretch along the cam surface portion 54b. The operating lever 53 is suddenly rotated in the J1 direction in accordance with the displacement of the cam follower 56 along the energy releasing cam surface portion 54b, whereby the date turning lever 41 is suddenly rotated in the C2 direction, and the date feeding is performed. The claw 42 engages with the teeth 26 of the date gear 23 located at the closest forward position, and the date indicator 20 is suddenly rotated in the C2 direction. The state shown in FIG. 13 is the same as the state shown in FIG. 5 except for the difference between the big moon and the small moon, and the apex of the teeth 26 of the date gear 23 is caused by the rotation of the date gear 23 of the date wheel 20 in the C2 direction. In the state where the apex of the jumping claw portion 27a of the date jumper 27 has reached, the date display area 13b of the month / day display window 13 is in a state where 30 and 31 are halved (a state that occurs in a very short time). This time point is after a lapse of a short time from the time point of FIG. 12 and is practically the same as the time point of FIG. 12, that is, from 24 o'clock on September 30 to around 0:00 on October 1st.

  After that, as shown in FIG. 14 with a lapse of a short time, on the one hand, the date jumper 27 suddenly turns the date wheel 20 in the C2 direction for half a day and the jumping claw portion 27a is next adjacent to the date gear 23. It falls between the teeth 26, 26 and enters the state of setting the date dial 20 again. As a result, the date character LD in the date display area 13b of the date display window 13 becomes “31”. On the other hand, the cam follower 56 continues to drop along the energy release cam surface portion 54b, and the operating lever 53 further rapidly rotates in the J1 direction in accordance with the displacement of the cam follower 56 along the energy release cam surface portion 54b. Is done. However, at this stage, since the date indicator 20 has already been rotated in the C2 direction by the operation of the date jumper 27, the date feeding claw 42 at the tip of the date feeding lever 41 and the front tooth 26 of the date indicator 20 There may be a slight gap. In this example, it is illustrated that the date feeding claw 42 is swung in the C2 direction sufficiently early to be engaged with the teeth 26 in practice. This time is also after a lapse of a little time from the time of FIG. 12 and FIG. 13 and is practically the same as the time of FIG. 12 and FIG. 13, that is, from 24:00 on September 30 to 0:00 on October 1. is there.

  In the state of FIG. 14, the end-of-month detection end 46 b of the end-of-month detection lever 46 comes out of the end-of-month recess 24 of the date dial 20 and returns to the state of engaging with the inner peripheral surface of the thick bowl-shaped portion 22 b. Accordingly, in the state of FIG. 14, the date feeding lever 41 also returns to the state in which the small moon detection cam follower 45 comes out of the small moon recess 37b of the month cam 37, and the date feeding claw 42 also has a normal date feeding start position P0. Is actually back on.

  When a little time elapses from the state of FIG. 14, the cam follower 56 of the operating lever 53 rotates in the sun and continues to drop further along the energy release cam surface portion 54 b of the cam 52. The operating lever 53 is suddenly rotated in the J1 direction in accordance with the displacement of the cam follower 56 along the energy releasing cam surface portion 54b, whereby the date turning lever 41 is suddenly rotated in the C2 direction, and the date feeding is performed. The claw 42 engages (or remains engaged) with the teeth 26 of the date gear 23 located at the closest front position, and the date indicator 20 is suddenly rotated in the C2 direction. The state shown in FIG. 15 is similar to the state shown in FIGS. 5 and 8 except for the difference between the large moon and the small moon, and the teeth 26 of the date gear 23 are accompanied by the rotation of the date gear 23 of the date dial 20 in the C2 direction. When the apex of the jumping claw portion 27a of the date jumper 27 has reached the apex of the date, the date display area 13b of the date display window 13 has the date characters LD "31" and "1" located in half ( This time is a state that occurs in a very short time), and this time point is a little later than the time point of FIGS. 12 to 14 and is practically the same as the time point of FIGS. From 24:00 to around 0:00 on October 1. Since it is the end of the small month, at this time, the month feeding pin 25 of the date dial 20 is engaged with the end of the input side arm portion 38a of the month feeding lever 38, and the month feeding lever 38 is moved in the K1 direction. The moon feeding claw 38c is engaged with the teeth 33a of the month star wheel 33, and the moon star wheel 33 starts to rotate in the C1 direction. At this time, the date feeding claw 42 is between the normal swing position P0 and the swing completion position P2.

  When the time elapses slightly from the state of FIG. 15, the cam follower 56 of the operating lever 53 rotates in the sun and continues to drop further along the energy release cam surface portion 54 b of the cam 52. The operating lever 53 is suddenly rotated in the J1 direction in accordance with the displacement of the cam follower 56 along the energy releasing cam surface portion 54b, whereby the date turning lever 41 is suddenly rotated in the C2 direction, and the date feeding is performed. The date dial 20 is suddenly rotated in the C2 direction via the teeth 26 of the date gear 23 in which the claw 42 is in the closest closest position. The state shown in FIG. 16 is the same as the state shown in FIG. 9 except for the difference between the large moon and the small moon, and the jumping claw portion 27a of the date jumper 27 in accordance with the rotation of the date gear 23 of the date dial 20 in the C2 direction. In the state where the apex of the date wheel 23 starts to fall beyond the apex of the tooth 26 of the date gear 23, the date display character LD has the most part of “1” in the date display area 13b of the date display window 13, and As the moon star wheel 33 rotates in the C2 direction, the moon display character is displayed in the month display area 13a of the moon date display window 13 in a state where the vertex of the lunar jumper 33c reaches the vertex of the tooth 33a of the moon star wheel 33. The display “SEP” representing September as the LM and the display “OCT” representing October are located in half (a state occurring in a very short time), and this time is the time shown in FIGS. After a lapse of a short time from the time of FIG. No 24 hours of Flip ie 30 September to be around midnight of October 1. At this time, the date feeding claw 42 is still between the normal swing position P0 and the swing completion position P2.

  Then, as shown in FIG. 17, with the lapse of a short time thereafter, the date jumper 27 turns the date indicator 20 abruptly in the C2 direction by a fraction of a day, and the jumping claw portion 27a It falls between the next adjacent teeth 26 and 26 of the date gear 23 and enters the state of setting the date dial 20 again. As a result, the date character LD in the date display area 13b of the date display window 13 becomes “1”. Further, the moon jumper 33c turns the moon star wheel 33 by half a tooth further in the C1 direction, and the jumping claw part of the moon jumper 33c is a valley portion between the next adjacent teeth 33a and 33a of the moon star wheel 33. It falls into 33b and enters the state which regulates the month wheel 30 again. As a result, the month letter LM in the month display area 13a of the month / day display window 13 becomes the display “OCT” representing October. On the other hand, the cam follower 56 continues to drop along the energy release cam surface portion 54b, and the operating lever 53 further rapidly rotates in the J1 direction in accordance with the displacement of the cam follower 56 along the energy release cam surface portion 54b. Is done. However, at this stage, since the date indicator 20 has already been rotated in the C2 direction by the operation of the date jumper 27, the date feeding claw 42 at the tip of the date feeding lever 41 at the swing completion position P2 and the date indicator 20 There is a gap between the front teeth 26. This time is also after a lapse of a little time from the time of FIGS. 12 to 16, and is actually the same as the time of FIGS. 12 to 16, that is, from 24:00 on September 30 to 0:00 on October 1. is there.

  As described above, in the calendar timepiece 3 equipped with the calendar mechanism 1, at the end of the small moon, the date feeding claw 42 is largely swung to the pre-swing position P1, and then the high speed date feeding is performed. Since the mechanism 50 performs advance daily feeding for one day at a time, and further performs normal daily feeding at a stretch, it can perform two days of daily feeding at a high speed at the end of a small month as a whole. The calendar mechanism 1 can also be used as a component that is the base of the movement 2, and changes can be minimized.

  Instead of having 12 indications, the month wheel may have 24 indications, and the month cam may consist of 24 parts instead of 12 parts. Such an example will be described with reference to FIGS. 18 to 23 as a timepiece with calendar mechanism or a calendar timepiece 3A having a movement 2A provided with a calendar mechanism 1A according to a modification of the present invention. In the calendar timepiece 3A of FIGS. 18 to 23, the same elements as those of the calendar timepiece 3 shown in FIGS. 1 to 17 are denoted by the same reference numerals and have substantially the same functions but differ in function and shape. However, a suffix “A” is added to the symbol of the corresponding element of the calendar clock 3 for a certain element.

  In the calendar mechanism 3A, the lunar cam 37A has two cam surface portions for each month, and the second (rear) cam surface portion of the small moon is the small moon recess 37bA, and the other cam surface portions. Is a large-diameter arcuate surface portion 37aA. In the calendar mechanism 3A, the moon star wheel 33A is also provided with 24 teeth 33A and troughs 33b as a whole in two each month. In this example, the concave portion 37bA of the lunar cam 37A is actually a concave portion at the end of the small moon rather than a simple small moon concave portion.

  The calendar mechanism 3A lacks a month end detection lever, and instead of the end detection lever, the date indicator 20A is replaced with a normal month feed pin (second month feed pin) 25A and another month feed pin (first month feed pin). 24A is provided. The first month feed pin 24A is engaged with the month feed lever 38 one day before the last day of the end of the month (when it changes from the 29th to the 30th) and the month star wheel 33A is moved by the month feed claw 38c. The tooth is rotated in the C1 direction by one tooth, and the month cam 37A is rotated in the D1 direction by one month via the month intermediate wheels 34, 35 to change from the state before the small moon to the state after the small moon. Change.

  In this case, the movable stroke control mechanism 5A includes the month cam 37A, the date feeding lever structure 40A composed of the date feeding lever 41A and the date feeding claw 42, and the date feeding lever at a specific time of the day of the end of the small moon. The month detection cam follower 45 of the structure 40A includes a month end detection unit that allows the moon month cam 37A to be fitted into the moon recess 37bA. Here, the month end detection unit includes a first month feed pin 24A.

  In the calendar mechanism 3A, since the month end detection lever is not used, the operation lever 41A includes the operation lever engagement portion 43 and the small moon detection cam follower 45, but the month end revealing lever engagement arm portion is not required.

  The operation of the calendar mechanism 1A of the movement 2A of the calendar timepiece 3A configured as described above will be described with reference to FIGS.

  FIG. 18 shows a calendar clock 3A that is in the state immediately before the date feeding from 29th to 30th, from around 24:00 on September 29th to about 0:00 on September 30th. The state of the calendar timepiece 3A in FIG. 18 corresponds to the state of the calendar timepiece 3 shown in FIG. In the state of FIG. 18, the first month feed pin 24 </ b> A is located near the input side arm portion 38 a of the month feed lever 38.

  In this state, with the passage of time, the hour wheel 16a rotates in the C1 direction, the date driving wheel 51 rotates in the H1 direction, and rotates the cam 52 in the H1 direction at the end 51c of the arc-shaped elongated hole 51b. The cam follower 56 of the actuating lever 53 turns the day and exceeds the maximum diameter portion 54d of the cam 52 and suddenly falls along the energy release cam surface portion 54b, and the date feeding claw 42 rapidly rotates in the C1 direction. 20 is rapidly rotated in the C2 direction by one tooth.

  As the date indicator 20 rotates from the 29th day to the 30th day in the C2 direction, the first month feed pin 24A pushes the input side arm 38a of the month feed lever 38 and rotates the month feed lever 38 in the K1 direction. The month star wheel 33A regulated by the month jumper 33c is rotated in the C1 direction by the month feeding claw 38c by one tooth, and the month cam 37A is moved by one step via the month middle first and second wheels 34, 35. The state shown in FIG. 19 is reached by rotating in the direction D1 by (1/24). In this state, the small moon recess 37bA of the month cam 37A is in a rotational position facing the cam follower 45 so as to be engageable with the small moon detection cam follower 45 of the date feeding lever 41A.

  Thereafter, the cam follower 56 of the actuating lever 53 rotates in the day and falls off the energy release cam surface portion 54b of the cam 52, whereby the daily change from the "29" day to the "30" day is completed.

  As the date indicator 20 rotates in the C2 direction, the 30th day of the month starts. As time elapses, the cam follower 56 of the operating lever 53 rotates in the day and approaches the maximum diameter portion 52d of the cam 52. The date feeding lever 41A is disengaged and the date feeding lever 41A rotates in the C1 direction so that the small moon detection cam follower 45A of the date feeding lever 41A fits into the small moon recess 37bA of the month cam 37A. . When the date feeding lever 41A is rotated in the C1 direction, the date feeding claw 42 is rotated in the E1 direction with respect to the date feeding lever 41A and is moved forward by one of the teeth 26 of the date indicator 20, that is, in the C2 direction. It moves so that it can engage with the tooth 26 on the near side by one in the C2 direction rather than the normal engagement.

  At the end of the small moon, that is, around 24:00 on September 30, that is, around 0:00 on October 1, the state becomes as shown in FIG. 20 corresponding to FIG. This state is a state immediately before daily feeding and monthly feeding are performed, and accordingly, the cam follower 56 of the operating lever 53 reaches the maximum diameter portion 54d of the date turning cam 52. In this state, since the small moon detection cam follower 45 of the date feeding lever 41A is fitted in the small moon recess 37bA of the month cam 37A, the date feeding lever 41A and the date feeding claw 42 supported thereby swing in the C2 direction. The moved pre-swing position P1A is taken. This pre-oscillation position P1A is an extra position in the C2 direction by Δφ = (φ1-φ0) compared to the normal swing position P0A. Other points are the same as the state of FIG.

  When the cam follower 56 of the actuating lever 53 turns in the day and exceeds the maximum diameter portion 54d of the cam 52 after a short time has elapsed from the state of FIG. 20, the cam follower 56 falls down along the energy releasing cam surface portion 54b. At first, the operation lever 53 is suddenly rotated in the J1 direction, the date turning lever 41A is suddenly rotated in the C2 direction, and the date feeding claw 42 is engaged with the teeth 26 of the date gear 23 at the closest position in front. At the same time, the date indicator 20 is suddenly rotated in the C2 direction.

  After that, as shown in FIG. 21 corresponding to FIG. 14 with a lapse of time, the date jumper 27 suddenly turns the date indicator 20A in the C2 direction for half a day, and the jumping claw portion 27a It falls between the next adjacent teeth 26 and 26 of the date gear 23 and enters the state of setting the date dial 20 again. As a result, the date character LD in the date display area 13b of the date display window 13 becomes “31”. On the other hand, the cam follower 56 continues to drop along the energy releasing cam surface portion 54b, and the operating lever 53 is further rapidly rotated in the J1 direction. However, at this stage, since the date indicator 20 has already been rotated in the C2 direction by the operation of the date jumper 27, the date feeding claw 42 at the tip of the date feeding lever 41 and the front tooth 26 of the date indicator 20 There may be a slight gap. In this example, it is illustrated that the date feeding claw 42 is swung in the C2 direction sufficiently early to be engaged with the teeth 26 in practice. This time is after a lapse of a little time from the time of FIG. 20 and is practically the same as the time of FIG. 20, that is, from 24:00 on September 30 to around 0:00 on October 1.

  In the state of FIG. 21, the small moon detection cam follower 45 of the date feeding lever 41A returns to the state where it comes out of the small moon concave portion 37bA of the month cam 37A, and the date feeding claw 42 returns to the normal date feeding start position P0. Is actually back on.

  When time elapses slightly from the state of FIG. 21, the cam follower 56 of the operating lever 53 rotates in the sun and continues to drop further along the energy release cam surface portion 54 b of the cam 52. The operating lever 53 is suddenly rotated in the J1 direction in accordance with the displacement of the cam follower 56 along the energy releasing cam surface portion 54b, whereby the date turning lever 41A is suddenly rotated in the C2 direction, and the date feeding is performed. The claw 42 engages (or remains engaged) with the teeth 26 of the date gear 23 located at the closest front position, and the date indicator 20A is suddenly rotated in the C2 direction. As the date gear 23 of the date dial 20 rotates in the C2 direction, when the apex of the jumping claw portion 27a of the date jumper 27 reaches the apex of the teeth 26 of the date gear 23, the second month feed pin 25A of the date dial 20 is Engage with the end 38a of the month feeding lever 38, swing the month feeding lever 38 in the K1 direction, engage the month feeding claw 38a with the month star wheel 33A, and start turning the month star wheel 33A in the C1 direction. . At this time, the cam follower 56 of the operating lever 53 rotates in the sun and continues to drop further along the energy releasing cam surface portion 54b of the cam 52. The operating lever 53 is suddenly rotated in the J1 direction in accordance with the displacement of the cam follower 56 along the energy releasing cam surface portion 54b, whereby the date turning lever 41A is suddenly rotated in the C2 direction, and the date feeding is performed. The date dial 20 is suddenly rotated in the C2 direction via the teeth 26 of the date gear 23 in which the claw 42 is in the closest closest position. In the state of FIG. 22 corresponding to FIG. 16, as the date gear 23 of the date dial 20 rotates in the C2 direction, the apex of the jumping claw portion 27a of the date jumper 27 starts to fall beyond the apex of the teeth 26 of the date gear 23. In this state, the most part of 1 is in the date display area 13b of the month date display window 13, and the moon jumper 33c is placed on the apex of the tooth 33aA of the month star wheel 33A as the moon star wheel 33A rotates in the C2 direction. In a state where the apex of the jumping claw portion has reached, the display SEP representing September and the display OCT representing October are located in half in the month display area 13a of the month / day display window 13 (in a very short time). This time is after a slight time has elapsed from the time of FIG. 20 or FIG. 21 and is actually the same as the time of FIG. 20 or FIG. It is around 0:00 of the day. At this time, the date feeding claw 42 is between the normal swing position P0 and the swing completion position P2.

  After that, as shown in FIG. 23 corresponding to FIG. 17, the date jumper 27 rapidly turns the date wheel 20A further in the C2 direction by a fraction of a day as shown in FIG. 23 corresponding to FIG. The claw portion 27a falls between the next adjacent teeth 26, 26 of the date gear 23 and enters the state of setting the date dial 20A again. As a result, the date character LD in the date display area 13b of the date display window 13 becomes “1”. Further, the moon jumper 33c turns the moon star wheel 33A half a tooth further in the direction C1, and the jumping claw part of the moon jumper 33c is a valley between the next adjacent teeth 33aA and 33aA of the moon star wheel 33A. It falls to 33bA and enters the state where the month indicator 30A is regulated. As a result, the month letter LM in the month display area 13a of the month / day display window 13 becomes the display “OCT” representing October. On the other hand, the cam follower 56 continues to drop along the energy release cam surface portion 54b, and the operating lever 53 further rapidly rotates in the J1 direction in accordance with the displacement of the cam follower 56 along the energy release cam surface portion 54b. Is done. However, at this stage, since the date indicator 20A has already been rotated in the C2 direction by the operation of the date jumper 27, the date feeding claw 42 at the tip of the date feeding lever 41A at the swing completion position P2 and the date indicator 20 There is a gap between the front teeth 26. This time is also after a lapse of a little time from the time of FIGS. 20 to 22, and is actually the same as the time of FIGS. 20 to 22, that is, from 24:00 on September 30 to about 0:00 on October 1. is there.

  As described above, also in the calendar timepiece 3A provided with the calendar mechanism 1A, at the end of the small moon, the date feeding claw 42 is swung to the pre-swing position P1 largely on the near side (in the C1 direction), and then the high speed date Since the daily feeding is performed one day at a time by the feeding mechanism 50 and then the normal daily feeding is performed at once, the daily feeding for two days can be performed at a high speed at the end of the month.

  Speaking of the high-speed date feeding mechanism 50, both the calendar timepiece 3 including the calendar mechanism 1 shown in FIGS. 1 to 17 and the calendar timepiece 3A including the calendar mechanism 1A shown in FIGS. Although an example has been described in which the operating lever 53 having the cam follower 56 to be engaged operates the date feeding claw 42 through the date feeding levers 41 and 41A to perform high-speed date feeding, instead, for example, As shown in FIG. 24A, the operating lever 53B itself provided with the cam follower 56B that engages with the date feeding cam 52B may have a date feeding claw 42B.

  Instead, for example, as shown in FIG. 24 (b), the date feeding lever 41C itself engaging with the operating lever 53C provided with the cam follower 56C engaged with the date feeding cam 52C is replaced by the date feeding claw. 42C may be integrally provided.

By the way, in the calendar mechanism 1 according to the above-described embodiment, when the date is to be corrected by pulling out the winding stem 15a, the small month detection cam of the date feeding lever 41 at the end of a small month, for example, at midnight on the 30th. The follower 45 falls into the small moon recess 37 b of the lunar cam 37. Therefore, even if it is attempted to correct the date by correcting the date, the month cam 37 cannot be rotated, so that the date and month cannot be corrected in this time zone.
Next, as a modified example of the present embodiment, a calendar mechanism 1B including a date correction mechanism that can perform date correction with a change in month even at the end of a small month will be described below.

  A calendar mechanism 1B having a date correction mechanism 64 according to a modification will be described with reference to FIGS. In the calendar mechanism 1B shown in FIGS. 25 to 27, the winding stem 15a can correct the date by moving the date wheel 20 and the month wheel 30 when the first stage is pulled out, and the time can be corrected when the second stage is pulled out. ing.

  The front end portion 65a of the setting lever 65 is engaged and supported in the recess of the winding stem 15a provided in the movement 2, and the setting lever 65 rotates around the central axis P in conjunction with the advancement and retraction of the winding stem 15a. The click spring 66 provided in the vicinity of the setting lever 65 has three click grooves 66a, 66b, 66c, and the positioning pin 67 implanted in the setting lever 65 can be selectively engaged with any one of them. Has been. For example, when the winding stem 15a is in the retracted position where it is retracted into the movement 2, the positioning pin 67 is engaged with the first click groove 66a, and the second click groove 66b is pulled out in two stages at the position where it is pulled out one stage. The rotation angle of the lever 65 is engaged with the third click groove 66c at this position.

A first clutch lever 68 is provided on the side opposite to the setting lever 65 with the winding stem 15a interposed therebetween so as to be swingable about the central axis Q. The front end portion 65a of the setting lever 65 abuts on a chevron 68a provided on the side of the first clutch lever 68 and can slide, and the first clutch lever 68 can be swung by being pushed by the setting lever 65. Has been. One end portion 69a of a second clutch lever 69 that can swing around the central axis R is in contact with the first clutch lever 68 so that it can be interlocked.
The leading end 65a of the setting lever 65 abuts against one hook of the chevron 68a of the first clutch lever 68 when the winding stem 15a is retracted, and abuts against the top of the chevron 68a when the winding stem 15a is pulled out one step. The swing of the first clutch lever 68 is controlled by contacting the other hook of the chevron 68a at the position where the winding stem 15a is pulled out two steps.

An operating pin 70 is implanted at the other end of the second clutch lever 69, and when the second clutch lever 69 rotates in conjunction with the rotation of the first clutch lever 68, the date feeding claw 42 is moved by the operating pin 70. Is pushed clockwise around the central axis E so as to be separated from the tooth 26 of the date indicator 20, and the date feeding lever 41 is pushed by the operating pin 70 to make the small moon detection cam follower 45 small on the month cam 37. It can be detached from the moon recess 37b.
As shown in FIG. 28, a plate-like clutch lever press 72 is provided on the date dial 20, and the first and second clutch levers 68 and 69 are engaged between the clutch lever press 72 and the main plate 6. The joint is stored to prevent misalignment.

The date correction mechanism 64 of the calendar mechanism 1B according to the present modification has the above-described configuration, and next, a cam follower for detecting the small moon of the date feeding lever 41, which is a period in which the date cannot be corrected in the above-described embodiment. A description will be given of a date correction method in a period when 45 falls into the small moon recess 37b of the month cam 37, for example, at midnight on the 30th at the end of the small moon.
At midnight or 30th at the end of the small moon, as shown in FIG. 25, the small moon detection cam follower 45 of the date feeding lever 41 falls into the small moon recess 37 b of the month cam 37. In this state, as shown in FIG. 26, when the winding stem 15a is pulled out from the pulled-in position to correct the date, the tip 65a of the setting lever 65 is pulled out and rotates counterclockwise. 67 elastically deforms the click spring 66 and moves from the first click groove 66a to the second click groove 66b for positioning.

  At this position, the distal end portion 65a of the setting lever 65 moves from the ridge of the chevron 68a of the first clutch lever 68 to the top, so that the first clutch lever 68 is pushed and rotated around the central axis Q. In order to push one end 69a of the clutch lever 69, the second clutch lever 69 is rotated clockwise around the central axis R, and the date feeding claw 42 is pushed by the operating pin 70 to rotate clockwise around the central axis R. To disengage from the teeth 26 of the date dial 20. Further, when the second clutch lever 69 is rotated clockwise, the operating pin 70 pushes the date feeding lever 41 together with the date feeding claw 42 so that the small moon detecting cam follower 45 is small in the month cam 37. It separates from the moon recess 37b.

Since the date feeding lever 41 and the date feeding claw 42 are held in this state, the date and month can be corrected by rotating the date indicator 20 and the month indicator 33 by turning the crown 15 of the winding stem 15a. At this time, when the day is changed from midnight on the 30th of the end of the small moon to change the month, the small moon detecting cam follower 45 is detached from the small moon concave portion 37b of the monthly cam 37. Can be rotated. In addition, the date feeding claw 42 is rotated together with the date feeding lever 41 by the operating pin 70 to be detached from the teeth 26 of the date dial 20.
Note that, even in cases other than the end of the small moon, such as Otsuki, the small pin detection cam follower 45 of the date feeding lever 41 is similarly removed from the small moon recess 37b of the month cam 37 by the operating pin 70, and The date feeding claw 42 is held at a position away from the teeth 26. In addition, when the winding stem 15a is pulled out two steps, the leading end 65a of the setting lever 65 comes to the other hook of the chevron 68a of the first clutch lever 68 as shown in FIG. 69 returns to a position where the operating pin 70 does not push the date feeding lever structure 40.

  As described above, according to the date correcting mechanism 64 of the calendar mechanism 1B according to the present modification, the small month detecting cam follower 45 of the date feeding lever 41 is the small end of the month cam 37 at the end of the small month when correcting the date. Even if the lug recess 37 b is fitted, the operation pin 70 of the second clutch lever 69 can hold the small moon detection cam follower 45 of the date feeding lever 41 at a position separated from the lunar recess 37 b of the month cam 37. Further, the date feeding claw 42 can also be held at a position detached from the tooth 26. Therefore, it is possible to correct the date at any time without restriction of the month or day, whether it is the end of a small month or the big month.

In the above description, the date feeding claw 42 is also detached from the tooth 26 of the date dial 20 when correcting the date. However, the date feeding claw 42 is locked to the tooth 26 without being pushed by the operating pin 70. It may be. In this case, since the date wheel 20 rotates counterclockwise by turning the crown of the winding stem 15 a, the inclined surface of the tooth 26 pushes the inclined back surface of the claw portion of the date feeding claw 42 to push the date feeding claw from the tooth 26. 42 can be escaped.
Further, the date correction mechanism 64 according to the present modification can also be employed in the calendar mechanism 1A described above.

1, 1A, 1B Auto-calendar mechanism 2, 2A Movement 3, 3A Calendar clock (clock with calendar mechanism)
4 Appearance 5, 5A Movable stroke control mechanism 6 Main plate 6a Date wheel presser 6b Month indication vehicle guide pipe 6c Large diameter portion 6e Back object presser 7b Center pipe 11 Time indication hand 11a Hour hand 11b Minute hand 11c Second hand 12 Dial 12a Typesetting 13 Month day Display window 13a Month display area 13b Date display area 14 Clock case 15 Crown 15a Winding stem 16a Hour wheel 16b Minute wheel 16c Second wheel 16d Tube gear 16e Minute gear 16f Large diameter cylindrical portions 20, 20A, 20B, 20C Date wheel 21 Date indicator wheel portion 21a Dial side surface 22a Large diameter cylindrical portion 22b Thick flange portion 22c Small diameter thick cylindrical portion 22d Dial side surface 23 Date gear 24 End of month recess 24A First month feed pin 25 Month feed pin 25A Second month feed pin 26 tooth 27 date jumper 27a date jumping claw portion 27b date jumping spring portion 30 month wheel 31 month star wheel structure 31a hub portion 32 Moon plate 32a Dial side surface 33, aaA Moon star car body (moon star car)
33a, 33aA Teeth 33b, 33bA Valley 33c Lunar jumper 34 Lunar intermediate first wheel 34a Teeth 35 Lunar intermediate second wheel 36 Lunar cam wheel 36a Lunar cam gear 37, 37A Lunar cam 37a, 37aA Large-diameter arc-shaped cam surface 37b Small moon Concave part 37bA
38 Month feed lever 38a Input side arm 38b Output side arm 38c Month feed claw 38d Month feed lever spring 40, 40A Date feed lever structure 41, 41A, 41C Date feed lever 41a Circular opening 41b Arm 42, 42B, 42C Date feeding claw 43 Actuating lever engaging portion 44 Month end detection lever engaging arm portion 45 Small moon detection cam follower 46 Month end detection lever 46a Outer lever portion 46b End portion 50 High-speed date feeding mechanism 51 Date turning wheel 51a Date turning gear portion 51b Arc-shaped elongated hole 51c Downstream end 52, 52B, 52C Date turning cam 53, 53B, 53C Actuating lever 53a Input-side lever 53b Output-side lever 53c Actuating lever spring 54 Cam surface 54a Energy applying cam surface 54b Energy Release cam surface portion 54c Minimum diameter portion region (minimum diameter portion)
54d Maximum diameter portion 55 Engagement pin (Date turning pin)
56, 56B, 56C Cam follower 57 Date feeding lever side engaging portion 61 Calendar correction wheel 62 Month correction wheel train 64 Date correction mechanism 65 Setting lever 66 Click springs 66a, 66b, 66c Click groove 67 Positioning pin 68 First clutch lever 68a chevron 69 second clutch lever 69a one end 70 actuating pin 72 clutch lever press C, D, E, F, H, J, K, P, Q, R center axis C1, C2, D1, E1, E2, F1 , F2, H1, J1, J2, K1, K2 Rotation (rotation) direction LD Date display character LM Month display character P0 Normal swing position P1 Prior swing position P2 Swing completion position Q1 Specific part Q2 Specific part T1 Specific point U1 Date correction position U2 Month correction position φ0 range φ1 range

Claims (10)

The stroke of the date feeding claw that engages with the teeth of the date dial and pushes the teeth to perform the date feeding operation is increased. A high-speed date feeding mechanism that allows more than 1 day feeding,
A movable stroke control mechanism that identifies a small moon whose number of days in one month is 30 days or less, and causes the high-speed date feeding mechanism to perform date feeding for two days at the end of the month,
Equipped with a,
The movable stroke control mechanism is
The small moon is rotated once a year with a small moon recess that distinguishes the small moon from the large moon with 31 days.
Moon cam,
Equipped with a small moon detection cam follower for detecting the small moon and the date feeding claw, and can swing on a support substrate.
A date feeding lever structure supported by
At the end of the small moon, the small moon detection cam follower of the date feeding lever structure is
A month-end detector that allows the cam to fit into the crescent recess of the cam;
The high-speed date feeding mechanism has a date feeding lever drive mechanism for swinging the date feeding lever structure once a day in order to perform the date feeding by the date feeding claw;
At the end of the small moon, for the small moon detection of the date feeding lever structure when changing daily
The cam follower is swung from the previous rocking position where the cam follower is fitted in the small moon recess of the month cam.
A calendar mechanism configured to swing to the movement completion position and feed two days . The date wheel has a recess at the end of the month,
The date feeding lever structure includes a month end detection lever engaging portion;
The end-of-month detection unit is engageable with the end-of-month recess of the date indicator, the date-feed lever engaging portion that engages with the end-of-month detection lever engaging portion of the date feeding lever structure, and the end of month end of the date indicator. And a month end detection lever with a month end detection end,
At the end of the small moon, the end of the month detecting end of the end of month detecting lever fits into the end of the month end of the date indicator to detect the small moon of the date feeding lever structure with respect to the small moon recess of the month cam. fit narrowing is acceptable use cam follower, the calendar mechanism of claim 1, wherein the day feed lever structure is configured to take the pre-rocking position. The calendar mechanism according to claim 2 , wherein the date feeding lever structure includes a date feeding lever main body and a date feeding claw lever that is rotatably connected to the date feeding lever main body and includes the date feeding claw at a tip. The lunar cam has 24 teeth and is configured to be rotated by two teeth per month, and the lunar recess is provided on the rear side of the lunar month,
The month end detection unit
Two moon feeding protrusions formed at intervals in the circumferential direction at a position near the end of the month of the date indicator;
Month feed that includes a month end detection end that can be engaged with the month feed protrusion and rotates the month cam by one tooth via the moon star wheel when the month end detection end is engaged with the month feed protrusion. A lever,
When the month feeding lever is rotated by the first month feeding projection of the two month feeding projections and the month cam is rotated by one tooth, the small amount of the date feeding lever structure of the date feeding lever structure is reduced. 2. A calendar mechanism according to claim 1 , wherein a month detecting cam follower is fitted in the small moon recess of the month cam, and the date feeding lever structure is swung to the pre-swing position. . The high-speed date feeding mechanism, a date driving wheel provided with one of a pin and an arc-shaped elongated hole;
A date-turning cam provided with the other of the pin and the arc-shaped elongated hole so as to engage with the one of the pin and the arc-shaped elongated hole, and a cam follower of the date-turning cam on one end side. any of claims 1 to 4 having an actuating lever having said feed day that engages the actuating lever engaging portion lever engaging portion of the date feed lever structure at the other end with the forming date indicator driving cam follower The calendar mechanism according to any one of the items. It has a clutch lever that is linked to the date correction operation,
The clutch lever is configured to prevent the small-moon detecting cam follower of the date feeding lever structure from fitting into the small-moon recess of the month cam in conjunction with a date correction operation. The calendar mechanism according to any one of claims 1 to 5 . The clutch lever, the conjunction date corrective action, according to claim 6, characterized in that so as to prevent the date feed dog engages pawl date indicator of the day feed lever structure Calendar mechanism. It has a clutch lever that is linked to the date correction operation,
The clutch lever includes a first clutch lever that is linked to a date correction operation, and a small-moon detecting cam follower of the date feeding lever structure that fits into the small-moon recess of the month cam in conjunction with the first clutch lever. according to any one of claims 2 to 7, characterized in that a second clutch lever to prevent the engagement with the teeth of the blocking then and the date feed pawl date indicator that Calendar mechanism. A movement comprising the calendar mechanism according to any one of claims 1 to 8 . A calendar timepiece having the calendar mechanism according to any one of claims 1 to 8 .

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