JP2010256249A - Timepiece with function for displaying day, am and pm - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a timepiece with the function for displaying day, AM and PM, capable of confirming a type of before noon and afternoon, if required when a winding stem is drawn to a drawn position different from a normal needle handling position. <P>SOLUTION: The timepiece 1 with the function for displaying the day, AM and PM includes: a 24-hour wheel 40 rotated once in 24 hours; the winding stem 17 drawn between the normal needle handling position P0 and the drawn position P2; and an AM/PM displaying mechanism 3 for displaying before noon or afternoon in response to a rotational position of the 24-hour wheel 40 when the winding stem 17 is drawn to the drawn position P2. The AM/PM displaying mechanism 40 includes: an AM/PM displaying cam 42 rotated once in response to one rotation of the 24-hour wheel 40, and provided with a before noon displaying cam plane 43 and an afternoon displaying cam plane 44; and cam-following displaying means 4, 6 abutting on the before noon displaying cam plane 43 or the afternoon displaying cam plane 44, and displaying before noon or afternoon when the winding stem 17 is drawn to the drawn position P2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a timepiece having a date display function, and more particularly, to a timepiece having an AM / PM identification display function in addition to a date display function and a AM / PM display function-equipped timepiece.

  In a timepiece having a date display function, for example, once the hand stops, it is not possible to know whether the display time in 12-hour units indicated by the hour hand of the time is in the morning or in the afternoon. , There is a risk that the time will be set incorrectly in the morning and afternoon (the time will be adjusted so that the time is shifted by only 12 hours). It is hard to avoid becoming.

  For various intentions, watches having a morning / afternoon display function have been proposed (Patent Documents 1 to 3).

  In Patent Document 1, the time of the current location is displayed by a normal time display hand including an hour hand and a minute hand, and the time at another location having a time difference from the current location is displayed in another region. It has been proposed to be able to display AM / PM in addition to 12 hour time for another location.

  Further, Patent Document 2 proposes that a vehicle having alternately morning and afternoon displays be rotated by one minute every 12 hours.

  Further, in Patent Document 3, the date indicator is rotated every half of a normal daily feed every 12 hours, and the date indicator is provided with a display indicating the distinction between morning and afternoon in addition to the date. It has been proposed that a date wheel in a rotating position can display both the date and the morning / afternoon type via a date window (day display window).

  However, any of the proposals always displays the morning or afternoon type and is somewhat uncomfortable.

JP 2004-144754 A China Utility Model Patent Notice CN2015000548Y US Patent Application Publication No. 2008/0049557

  The present invention has been made in view of the above points, and its purpose is to confirm the type of AM / PM as necessary when the winding stem is pulled out to a pulling position different from the normal hand movement position. The purpose is to provide a clock with a display function for the day and the morning / afternoon to be obtained.

  In order to achieve the above-mentioned purpose, the timepiece with AM / PM display function of the present invention is a timepiece with date and AM / PM display function, which is a 24-hour car that rotates once every 24 hours, a normal hand movement position, and a drawer. A winding stem that can be taken in and out between positions, and an AM / PM display mechanism that indicates that it is AM or PM according to the rotational position of the 24-hour car when the winding stem is pulled out to the pull-out position Prepare.

  In the watch with the display function of the day and the morning / afternoon of the present invention, “When the winding stem is pulled out to the pull-out position, it is displayed that it is in the morning or the afternoon depending on the rotation position of the 24-hour car in the morning or afternoon. Since the “AM / PM display mechanism” is provided, the winding stem is pulled out to the pull-out position different from the normal hand movement position to indicate whether the hour hand display time is AM or PM when viewed in 24-hour units. It can be surely recognized. Therefore, typically, when the winding stem is pulled out to a pull-out position that is different from the normal hand movement position, the needle can be surely aligned with a predetermined current time in the morning or afternoon. As a result, in the timepiece with the morning / afternoon display function of the present invention, the date display change timing can be surely matched to the actual daily change timing. Here, in the morning / afternoon display, only when it is morning, it is displayed that it is morning, and when it is the afternoon, it is displayed that it is afternoon instead of morning by not displaying anything. However, in the meantime, if it is an afternoon, it is displayed only in the afternoon, and if it is in the morning, it is displayed in the morning instead of the afternoon by not displaying anything. In the case of, it may be explicitly (directly) displayed that it is morning, and in the case of afternoon, it may be explicitly (directly) displayed that it is afternoon.

  The date display is typically performed by a date window displaying a date indicator and the date of the date indicator. However, if desired, the date indicating hand and the date star indicating the date itself may be rotated instead.

  In the time-of-day and morning / afternoon timepiece of the present invention, the 24-hour wheel is typically arranged concentrically with the hour hand and the minute hand. However, it may not be concentric with one or both of the hour hand and the minute hand. The date indicator for turning the date wheel is actually a 24-hour car that rotates once every 24 hours. There is no need to provide a 24-hour car.

  In the time-of-day and am / pm display timepiece of the present invention, typically, the am / pm display mechanism is rotated once in response to one rotation of the 24-hour car, and the 24-hour car is in the morning rotation position. An AM / PM display cam having an AM display cam surface portion indicating that it is in the afternoon position, and an AM display cam when the winding stem is pulled out to the extraction position. Display means in the form of a cam follower that is in contact with the surface portion or the afternoon display cam surface portion and displays that it is morning or afternoon. However, the AM / PM display mechanism is not a mechanical display mechanism, but instead of a mechanical display mechanism, when the winding stem is pulled out to the pull-out position, it indicates that it is AM or PM according to the rotation position of the 24-hour car. It may be displayed with specific information (for example, in the morning, “the daylight is illuminated in red”).

  When the AM / PM display mechanism has the AM / PM display cam as described above and the display means in the form of the cam follower as described above, when the winding stem is pulled out to the drawing position, the cam follower type is displayed. Since the display means abuts on the morning display cam surface portion or the afternoon display cam surface portion of the morning / afternoon display cam and displays that it is AM or PM, the AM / PM display corresponds to the drawer of the winding stem. It can be done reliably.

  Here, the display means is “when the winding stem is pulled out to the pulling position, it is brought into contact with the morning display cam surface portion or the afternoon display cam surface portion”, and the winding stem is moved to the pulling position. The display means does not come into contact with the cam surface in the normal hand movement state where the cam is not pulled out.

  In the time-of-day and morning / afternoon timepiece of the present invention, typically, the display means has a display lever which is movable between an operating position and a non-operating position and has a locked portion, and is wound. When the true has a locking portion and the winding stem is at a position other than the drawing position, the display lever is locked by the locking portion of the winding stem at the locked portion and stopped at the non-operating position.

  In this case, only when the winding stem is pulled out to the pull-out position, the lock of the display lever by the locking portion of the winding stem is released, and the display lever can be moved from the non-operating position to the operating position. Become.

  The display lever is typically configured to be rotatable about its rotation center axis between an operating position and a non-operating position. However, if desired, instead, the display lever may be swingable or reciprocally movable between the operating position and the non-operating position.

  In the time-of-day and morning / afternoon timepiece of the present invention, typically, the display means moves from the non-operating position of the display lever to the operating position with respect to the display lever main body including the locked portion. Elastic biasing means for exerting a biasing force toward

  In this case, the display lever can be displaced from the non-operating position to the operating position under the action of the elastic biasing means simply by unlocking the locked portion of the display lever by the winding stem locking portion.

  In the time-of-day and morning / afternoon timepiece of the present invention, typically, the elastic biasing means comprises a spring integral with the display lever body. However, the display lever body may be a separate body for the elastic biasing means. The elastic biasing means may be other than a spring.

  Note that, in the time-of-day and morning / afternoon timepiece of the present invention, the display means typically includes the display lever and a display hand attached to the display lever.

  In this case, the display hand can be formed of a member suitable for display, and the display lever can be formed of a member suitable for the operation. However, if desired, the display portion corresponding to the display hand may be formed integrally with the main body of the display lever. In addition, the display lever and the display needle constituting the display unit may be connected by a mechanism capable of relative movement instead of being fixed to each other.

  The watch with a display function for day and morning / afternoon of the present invention typically has a date wheel and a dial plate with a date window for displaying the date of the date wheel, and the winding stem is at the drawer position. When pulled out, the display means in the form of a cam follower is brought into contact with the morning display cam surface part or the afternoon display cam surface part so that a part of the display means appears in the day window.

  In that case, the date window used for date display may be used for the morning and afternoon display. Here, only when the winding stem is pulled out to the predetermined drawer position, the AM / PM display is performed. Therefore, unlike the case where the AM / PM display is always performed, an orthodox clock expression (hand and calendar) is displayed. Etc.), so there is little discomfort in the morning / afternoon display. In addition, the visibility is high unlike the case of displaying the morning and afternoon in the 24-hour car itself.

  However, instead of displaying AM / PM in the date window that displays the date of the date indicator, another window or other display area that displays AM / PM is provided, and AM / PM is displayed in the display area. Display may be performed. Further, the date may be displayed by rotating a date star wheel or other vehicle equipped with a date indicator hand with respect to the date displayed on the dial or bezel.

  In the timepiece having an AM / PM display function of the present invention, typically, the drawer position is a drawer position for hand alignment.

  In that case, pinch the crown and try to adjust the time of a watch that has stopped or is significantly out of time, and pull the winding stem to the pulling position for setting the needle (typically, the second stage or winding stem) It is possible to recognize whether the time displayed on the clock is in the morning or in the afternoon at the exact time when it is pulled out to the second stage), so there is no waste and no extra operations. Based on the morning / afternoon information, the following stitch matching operation can be performed.

  However, if desired, before pulling out the winding stem to the second stage (needle alignment position), for example, it is possible to display the morning and afternoon by simply pulling it out to the first stage (usually the date alignment position). (As long as the winding stem is pulled out to the second stage (needle alignment position), the morning and afternoon display is performed).

FIG. 1 shows the appearance of a timepiece according to a preferred embodiment of the present invention, in which (a) is a front explanatory view showing the appearance of the timepiece according to a preferred embodiment of the present invention in a normal hand-operated state, and (b) Front explanatory view showing the appearance of the watch of (a) when the winding stem is pulled out to the hand alignment position (two-stage pull-out position) when in the morning state, (c) is the winding when the watch is in the afternoon state Front explanatory drawing which showed the external appearance of the timepiece of (a) when true was pulled to the hand alignment position (two-stage pull-out position). FIG. 2 is an explanatory view of a longitudinal section of a part of the movement of the timepiece of FIG. 1. FIG. 1 shows a part of the movement of the watch of FIG. 1 from the front (rear side), (a) is a front explanatory view of a part of the movement in a state where the winding stem is at the 0th stage (normal hand movement state); b) Front explanatory drawing of a part of the movement in a state where the winding stem is in the second stage. FIG. 2 is an enlarged view of the morning / afternoon display mechanism of the timepiece of FIG. 1, wherein (a) is a preferred embodiment of the present invention when the timepiece is in a normal hand movement state and the timepiece is in the morning state. Front explanatory view showing an example of the morning / afternoon display mechanism, (b) is a front explanatory view similar to (a) showing a state in which the winding stem is pulled out to the second stage in the morning / afternoon display mechanism of (a) , (C) is a front explanatory view showing the morning / afternoon display mechanism of (a) when the watch is in the normal hand movement state and the watch is in the afternoon state, and (d) is the morning view of (c). Front explanatory drawing similar to (c) showing a state in which the winding stem is pulled out to the second stage in the afternoon display mechanism.

  A preferred embodiment of the present invention will be described based on a preferred embodiment shown in the accompanying drawings.

  A timepiece 1 according to a preferred embodiment of the present invention includes an hour hand 11, a minute hand 12 and a second hand 13 which are rotated clockwise C1 around a central axis C as shown in FIG. There is a date wheel 16 for displaying the date through the date window 15 of the plate 14. In the timepiece 1, during normal hand movement, the winding stem 17 is at the pushed-in position (so-called winding stem 0th stage or crown 0th stage) P0, and when hand alignment (correction of the display time) is performed, FIG. As shown in (b) and (c), the winding stem 17 is pulled out in the A1 direction at a pulling position for needle alignment (so-called second winding crown or second crown) P2. The position at which the winding stem 17 is pulled out by one step (so-called first winding stem or first crown) is the date correction drawing position. A crown 19 is attached to the protruding end of the winding stem 17.

  As shown in FIG. 2, the timepiece 1 includes a hour wheel 11 to which the hour hand 11 is attached, a second wheel 22 to which the minute hand 12 is attached, and a fourth wheel 23 to which the second hand 13 is attached. The center wheel 22 includes a second pinion 22a and a second gear 22b slip-engaged with the second pinion 22a. These vehicles 21, 22, and 23 are controlled by a speed governor / escaper (not shown) or a sun wheel 24 (see FIG. 3) under the action of rotational torque from a rotary drive source such as a mainspring (not shown). (See (a) or (b)), and each of them is rotated at respective predetermined rotational speeds. In this example, the mainspring (not shown) is also wound up by the rotating weight 25 for automatic winding. In FIG. 2, 8 is a base plate, 9 is a third receiving member, and 14a is a dial receiving ring.

  A pinion wheel 31 is fitted and engaged with the winding stem 17, and the pinion wheel 31 is operated under the action of a switching mechanism 34 including a setting lever 32 and a crown 33 in accordance with the insertion and removal of the winding stem 17 in the A1 and A2 directions. Thus, the winding stem 17 is displaced in the A2 and A1 directions. When the winding stem 17 enters and exits in the A1 and A2 directions, the lever 35 is swung in the E1 and E2 directions under the action of the switching mechanism 34. On the lever 35, wheels 38a and 38b constituting a later-described needle turning intermediate wheel train 38 and wheels 39a and 39b constituting a date correcting wheel train 39 are rotatably supported.

  When the winding stem 17 is at the 0-th stage P0, the pinion wheel 31 is engaged with the round hole wheel 36b via the chisel wheel 36a, and the round hole wheel 36b or the square hole is rotated according to the one-way rotation of the winding stem 17. A mainspring (not shown) is wound up through a car (not shown).

  When the winding stem 17 is set to the second stage P2, as shown in FIG. 3B in addition to FIG. 2, the pinion wheel 31 is engaged with the small wheel 37 and the lever 35 is swung in the E1 direction. The wheel is engaged with the minute wheel 24 via the wheels 38 a and 38 b of the intermediate wheel train 38 which is meshed with the small wheel 37 by the movement. Accordingly, when the winding stem 17 is at the second stage P2, the small wheel 37, the needle turning intermediate wheels 38a and 38b, and the minute wheel 24 according to the rotation of B1 and B2 around the central axis B of the winding stem 17 Then, the hour wheel 11 and the minute hand 22a are rotated, and the hour hand 11 and the minute hand 12 are rotated to perform hand alignment. When the winding stem 17 is set to the second stage P2, the balance (not shown) constituting the speed governor / escapement is regulated via the balance regulating lever 18, and the rotation of the second hand 13 is also stopped. It is done.

  On the other hand, when the winding stem 17 is set to the first stage (not shown), the pinion wheel 31 is meshed with the small wheel 37 and the date when the lever 35 is meshed with the small wheel 37 by swinging in the E2 direction. The date wheel 16 is turned through the date correction wheel train 39 by being engaged with the cars 39a, 39b, etc. (see FIGS. 3A and 3B) of the correction wheel train 39, and the date display is changed. When the winding stem 17 is in the first stage, the small wheel 37 and the needle wheel train 38 are disengaged.

  The timepiece 1 includes a 24-hour wheel 40 that rotates around the central axis C in the C1 direction (clockwise) in addition to the various wheel trains as described above. The 24-hour wheel 40 is integrally provided with a 24-hour cam 42 as an AM / PM display cam in addition to the 24-hour gear 41. For example, as shown in an enlarged view in FIG. 4A, the 24-hour cam 42 has a substantially semicircular small-diameter arc-shaped portion or small-diameter arc-shaped cam surface 43 as an am-display cam surface portion, and an afternoon display. And a large semicircular large-diameter arc-shaped portion or large-diameter arc-shaped cam surface 44 as a cam surface portion for use. The small-diameter and large-diameter arcuate portions 43 and 44 are continuously and practically smoothly connected by connecting cam surfaces or transition cam surfaces 45a and 45b slightly inclined with respect to the radial direction.

  The 24-hour wheel 40 is engaged with the hour wheel 21 via a 24-hour intermediate wheel 48. More specifically, the 24-hour intermediate wheel 48 is meshed with the 24-hour gear 41 of the 24-hour wheel 40 at its gear portion, and the gear portion 48b is meshed with the gear portion 21b integral with the hour wheel 21 at the gear portion 48b. Yes.

  The timepiece 1 has an AM / PM display mechanism 3 as can be seen from FIGS. 4A to 4D which are enlarged views of the relevant portions of FIGS. 3A and 3B. The AM / PM display mechanism 3 includes the 24-hour cam 42 of the 24-hour wheel 40 described above, a display lever 4 that can be engaged with the cam 42, and a display hand 6 attached to the display lever 4. Here, the display means in the form of a cam follower, which is in contact with each other and displays that it is in the morning or afternoon, comprises a display lever 4 and a display hand 6.

  The display lever 4 includes a display lever main body portion 50 integrally including a pair of rigid arm portions 51 and 52, and a spring portion 60 extending from the display lever main body portion 50.

  The display lever main body 50 is supported by a support member such as the base plate 8 so as to be rotatable in the directions D1 and D2 around the central axis D via a pin 54 at a connecting portion 53 of a pair of arm portions 51 and 52. . One arm portion 51 of the pair of arm portions 51 and 52 of the display lever main body portion 50 is provided with a copying engaging projection 55 that functions as a cam follower at the tip. The other arm portion 52 of the pair of arm portions 51 and 52 includes a display needle attaching portion 56 and an engaged protrusion 57 at the tip portion. The indicator needle 6 is integrally attached to the indicator needle attachment portion attachment portion 56, and the winding protrusion 0 57 as the locked portion is attached to the winding stem 0 stage or crown 0 stage (normal hand movement position). ) A front end portion 17a as a locking portion of the winding stem 17 at P0 can be engaged. When the winding stem 17 is pulled out to the second stage P2, the distal end portion 17a of the winding stem 17 moves backward in the A1 direction so as to be separated from the engaged projection 57, so that the distal end portion 17a of the winding stem 17 is The displacement of the engaging protrusion 57 is not restricted. The copying engaging projection 55 of the display lever main body 50 responds to the two-stage drawing of the winding stem 17 when the timepiece 1 is in the morning state (the 24-hour wheel 40 is in the rotational position corresponding to the morning). When the timepiece 1 is in the afternoon state (the 24-hour wheel 40 is in the rotational position corresponding to the morning), it can be brought into contact with the small-diameter arc-shaped portion 43 as the morning display cam surface portion. The large diameter arcuate portion 44 as the afternoon display cam surface portion can be brought into contact with the step drawer.

  The spring portion 60 as the elastic biasing means includes a spring main body portion 61 bent in a substantially U shape. One end 62 of the spring main body 61 is integrally connected to the outer portion 58 of the connecting portion 53 of the pair of arm portions 51 and 52 in the display lever main body 50. The U-shaped spring main body 61 is supported at the other end 63 in contact with a pin 8 a protruding from a support member such as the base plate 8. Accordingly, the spring 60 of the display lever 4 exerts a biasing force on the display lever main body 50 so as to always rotate the display lever main body 50 around the pin 54 in the direction D1.

  The display needle 6 includes a base large diameter portion 71 and a needle main body portion 72 elongated from the base large diameter portion 71. The display needle 6 is a base large-diameter portion 71 and is fixed to the display needle mounting portion 56 of the arm portion 52 of the display lever main body portion 50 via the connecting pin-shaped portion 72, and the display lever main body portion 50 of the display lever 4. However, when it is rotated in the directions D1 and D2, the needle main body 72 is swung in the directions D1 and D2 in accordance with the rotation.

  More specifically, as shown in FIGS. 4A and 4C, the winding stem 17 is in the normal hand movement position (the 0th stage), and the distal end portion 17 a of the winding stem 17 is the main body portion of the display lever 4. When the engaged protrusion 57 of the 50 arm portion 52 is pushed in the A2 direction, the main body portion 50 of the display lever 4 is swung in the D2 direction, and the arm portion 52 is swung in the D2 direction. 6 is also swung in the direction D2. In this state, the indicator hand 6 is located outside the date window 15, and the indicator hand 6 is not visible from the date window 15.

  On the other hand, when the winding stem 17 is pulled to the second stage P2 in the A1 direction and the main body portion 50 of the display lever 4 is greatly swung in the D1 direction, the display needle 6 attached to the arm portion 52 is also swung in the D1 direction. Thus, the main body portion 72 of the display hand 6 enters the range of the date window 15, and the main body portion 72 of the display hand 6 becomes visible from the date window 15. The degree of swing of the main body 50 of the display lever 4 in the D1 direction when the winding stem 17 is pulled to the second stage P2 in the A1 direction is the tip engagement portion 55 of the arm 51 of the display lever main body 50. This depends on the cam surfaces 43 and 44 of the cam 42 that engages with the cam 42.

  Next, the operation of the AM / PM display mechanism in the timepiece 1 configured as described above will be described with reference to FIGS. 1A to 1C and 4 in addition to FIGS. This will be described in more detail with reference to (a) to (d).

  As shown in FIG. 1A, it is assumed that the timepiece 1 is stopped while pointing to “10: 8” on the third day. Just looking at this state of watch 1, it can be identified whether this watch 1 points to "'AM" 10: 8 "or"' PM "10: 8" on the 3rd Can not.

  Here, for example, assuming that the current time to be set is “7 pm xx minutes”, the time of the clock 1 is set at the time ““ pm ”7 xx minutes”.

  In the past, the winding stem was pulled out to the second level because it was unclear whether the clock hands pointed to “AM” 10:08 or “PM” 10:08. Above, check the hand position at which the date display by the date wheel is changed by turning the clockwise forward hand, and the state (needle position) indicating “'Afternoon' 7 o'clock x minute” with reference to the hand position. ) Until the needle is turned for 10 hours. That is, before setting the time (hand position), it is indispensable to confirm or check whether the clock hand points to the morning time or the afternoon time, which is troublesome and cumbersome.

  On the other hand, in the timepiece 1 having the morning / afternoon display mechanism 3, the hands are aligned as follows.

  First, the winding stem 17 is pulled out to the second stage P2 in the A1 direction.

  When the winding stem 17 is set to the second stage P2, when the clock indicates “'AM” 10: 8 ”, as shown in FIG. 1B, the AM / PM display mechanism The tip of the main body 72 of the third indicator hand 6 projects into the frame of the date window 15, and the indicator hand 6 is visible in the date window 15.

  More specifically, when the watch 1 stops at 10: 8 am, the 24-hour wheel 40 that rotates once in 24 hours stops at the corresponding rotational position, so that (a) and (b) in FIG. As shown in FIG. 4, the 24-hour cam 42 stops at the rotational position corresponding to 10: 8 am.

  When the winding stem 17 is in the normal hand movement position P0 as shown in FIG. 1A, the leading end 17a of the winding stem 17 is covered with the display lever main body 50 as shown in FIG. Since the engagement protrusion 57 is pushed in the A2 direction against the biasing force in the D1 direction of the spring 60 to restrict (inhibit) the rotation of the display lever main body 50 in the D1 direction, the display lever main body 50 is in the inoperative position R0. The display hand 6 is stopped at the non-display position Q0.

  When the winding stem 17 is pulled out in the A1 direction to the second stage P2 for turning the needle, as shown in FIG. 4 (b), the display lever main body 50 is engaged with the leading end portion 17a of the winding stem 17. Since the regulation of the mating projection 57 is released, the display lever main body 50 remains under the action of the spring 60 until the engagement projection 55 forming the cam follower hits the small-diameter arcuate cam surface 43 of the 24-hour cam 42. Is rotated in the direction D1, reaches the display operating position R1, and the display hand 6 also swings in the direction D1 to move to the display position Q1 within the range of the date window 15. Therefore, the display hand 6 can be seen through the date window 15 (the state shown in FIG. 1B). That is, in the timepiece 1, when the time pointed by the hands 11, 12 is the morning time, the indicator hand 6 of the AM / PM display mechanism 3 can be moved only by setting the winding stem 17 to the second stage P 2. Appears within the range of the day window 15 to inform that the time pointed by the clock 1 is the morning time. Therefore, unlike the conventional case, there is no need for complicated operations for “checking or checking whether the clock indicates the morning time or the afternoon time”. Can be broken.

  On the other hand, when the clock indicates “'PM” 10: 8 ”, as shown in FIG. 1C, even if the winding stem 17 is set to the second stage P2, AM / PM The display hands 6 of the display mechanism 3 do not protrude into the frame of the date window 15, and the display hands 6 do not appear in the date window 15.

  More specifically, when the watch 1 stops at 10: 8 pm, the 24-hour wheel 40 that rotates once in 24 hours stops at the corresponding rotation position, so that (c) and (d) in FIG. As shown, the 24-hour cam 42 is stopped at the rotational position corresponding to 10: 8 pm.

  When the winding stem 17 is in the normal hand movement position P0 as shown in FIG. 1A, the leading end 17a of the winding stem 17 is covered with the display lever main body 50 as shown in FIG. Since the engagement protrusion 57 is pushed in the A2 direction against the biasing force in the D1 direction of the spring 60 to restrict (inhibit) the rotation of the display lever main body 50 in the D1 direction, the display lever main body 50 is in the inoperative position R0. The display hand 6 is stopped at the non-display position Q0. The relationship between the display lever 4 and the winding stem 17 in the case of FIG. 4C is the same as the relationship between the display lever 4 and the winding stem 17 in the case of FIG. Here, there is typically a gap between the engaging protrusion 55 forming the cam follower and the large-diameter arcuate cam surface 44 of the 24-hour cam 42. However, if desired, they may actually touch each other. However, even in such a case, in the state of FIG. 4C, the display lever main body 50 rotates in the D1 direction by the contact of the tip 17a of the winding stem 17 with the engaged protrusion 57 of the display lever main body 50. This regulation (prohibition) is maintained in practice.

  When the winding stem 17 is pulled out in the A1 direction to the second stage P2 for turning the needle, as shown in FIG. 4 (d), the engagement of the display lever main body 50 by the tip 17a of the winding stem 17 is performed. Although the regulation of the mating projection 57 is released, when the display lever main body 50 starts to rotate in the direction D1 along with the release, the engagement projection 55, which is a cam follower, becomes larger in the 24-hour cam 42. Since the display lever main body 50 is immediately brought into contact with the radial arc-shaped cam surface 44, the display lever main body 50 is only slightly rotated in the direction D1, and the rotation is prohibited again and stops at the non-display operation position R2. Further, the display hand 6 is only slightly swung in the direction D1, and actually stops at the non-display position Q0 outside the range of the date window 15. Accordingly, the indicator hand 6 is not visible in the date window 15 (the state shown in FIG. 1C).

  That is, in the timepiece 1, when the time pointed by the hands 11 and 12 is the afternoon time, the display hand 6 of the AM / PM display mechanism 3 is set to the date even if the winding stem 17 is set to the second stage P2. Since it does not appear within the range of the window 15, it informs that the time pointed by the clock 1 is the afternoon time. Therefore, unlike the conventional case, there is no need for complicated operations for “checking or checking whether the clock indicates the morning time or the afternoon time”. Can be broken.

  In the timepiece 1 as described above, when the timepiece 1 is in the morning state, the indicator hand 6 appears in the date window 15 in response to the winding stem 17 being pulled out to the second stage P2. The appearance is the same as that of a conventional ordinary timepiece, and a high-class feeling can be maintained in that the orthodox timepiece expression is maintained as it is.

  In the above description, the engagement protrusion 55 of the display lever main body 50 is in contact with the small-diameter arc-shaped portion (small-diameter arc-shaped cam surface) 43 in the morning, and the large-diameter arc-shaped portion (large-diameter arc-shaped cam) Although the example in which the afternoon is in contact with the surface 44) has been described, instead, the engagement protrusion 55 of the display lever main body 50 contacts the small-diameter arc-shaped portion (small-diameter arc-shaped cam surface) 43. The 24-hour cam 42 may be positioned relative to the 24-hour gear 41 so that it is afternoon and it is the morning that it contacts the large-diameter arc-shaped portion (large-diameter arc-shaped cam surface) 44.

  Further, for example, the diameters of the small-diameter arc-shaped portion (small-diameter arc-shaped cam surface) 43 and the large-diameter arc-shaped portion (large-diameter arc-shaped cam surface) 44 are formed to be slightly smaller than the illustrated example. The indicator hand 6 appears at a position slightly shifted to 4 o'clock from the 3 o'clock direction of the date window 15, and in the afternoon, the indicator hand 6 is shifted slightly to 2 o'clock from the 3 o'clock direction of the date window 15. It may appear at a position. In that case, whether it is morning or afternoon, the display hand 6 can be visually recognized through the date window 15 so that it can be recognized that the distinction between the morning and the afternoon is performed, and the display hand 6 Whether the position is shifted to the 4 o'clock side or the 2 o'clock side from the 3 o'clock position can be identified as morning or afternoon.

  Furthermore, if desired, for example, even before the winding stem 17 is pulled from the 0th stage (normal hand movement position) to the 2nd stage (needle alignment position), the first stage (typically calendar (date) adjustment) It is also possible to make the indicator hand 6 appear at least partially in the date window 15 simply by pulling it to the position).

  In the above, the example in which the display lever 4 is rotated in the directions D1 and D2 around the rotation center axis 54 has been described. However, the display lever 4 may be swung instead of being rotated. , It may be reciprocally translated.

  Further, in the above description, the example in which the display needle 6 and the display lever 4 are fixed to each other is described. However, the display needle 6 is relatively displaced with respect to the display lever 4 according to the displacement of the display lever 4. It may come to be.

DESCRIPTION OF SYMBOLS 1 Clock 3 AM / PM display mechanism 4 Indicator lever 6 Indicator hand 8 Ground plate 8a Pin 11 Hour hand 12 Minute hand 13 Second hand 14 Dial 15 Date window 16 Date wheel 17 Winding stem 17a Winding stem tip 18 Balance dial lever 19 Crown 21 Second wheel 21b Second wheel 22a Second wheel 22a
22b Second gear 23 Fourth wheel 24 Day wheel 25 Rotating weight 31 Pinch wheel 32 Adjusting wheel 33 Handwheel 34 Switching mechanism 35 Lever 36a Hitch wheel 36b Round hole wheel 37 Small iron wheel 38 Needle turning intermediate wheel train 38a, 38b Needle turning Intermediate car 39 day correction wheel train 39a, 39b Day correction (intermediate) car 40 24 hour car (24 hour car)
41 24-hour gear 42 24-hour cam 43 Small-diameter arc-shaped portion (small-diameter arc-shaped cam surface)
44 Large-diameter arc-shaped part (large-diameter arc-shaped cam surface)
45a, 45b Connection cam surface (transition cam surface)
48 24 o'clock intermediate wheel 48a Kana portion 48b Gear portion 50 Display lever main body portion 51 Rigid arm portion 52 Rigid arm portion 53 Connecting portion 54 Pin 55 Copying engagement protrusion (cam follower)
56 Display needle mounting portion 57 Engaged projection portion 58 Outer portion 60 Spring portion 61 Spring main body portion 62 Base end portion 63 Tip end portion 71 Base large diameter portion 72 Needle main body portion 73 Connecting pin-shaped portion A1, A2 Winding stem insertion / removal direction B Center axis of winding stem B1, B2 Rotation direction C Center axis D Center axis D1, D2 Direction of display lever rotation (direction of display needle swinging)
E1, E2 Lever swing direction P0 0 (zero) stage P2 2nd stage Q0 Non-display position Q1 Display position R0 Non-operation position R1 Display operation position R2 Non-display operation position

Claims (8)

A watch with a display function for day and morning / afternoon,
A 24-hour car that rotates once in 24 hours;
A winding stem that can be taken in and out between the normal hand movement position and the withdrawal position,
When the winding stem is pulled out to the pull-out position, a clock with a display function of the day and the morning / afternoon with an am / pm display mechanism that indicates that it is in the morning or afternoon according to the rotation position of the 24-hour car . AM / PM display mechanism
A cam surface portion for morning display indicating that the 24-hour vehicle is in the morning rotational position and an afternoon display cam surface portion indicating that the 24-hour vehicle is in the morning rotational position are provided. Morning and afternoon display cams,
And a cam follower in the form of a cam follower, which is in contact with the morning display cam surface portion or the afternoon display cam surface portion and indicates that it is in the morning or afternoon when the winding stem is pulled out to the extraction position. Clock with date and morning / afternoon display function as described in 1. When the display means has a display lever that is movable between an operating position and a non-operating position and has a locked portion, the winding stem has a locking portion, and the winding stem is at a position other than the drawing position. 3. A timepiece with a date and morning / afternoon display function according to claim 2, wherein the display lever is locked at the locked portion by the winding stem locking portion and stopped at the non-operating position. 4. The day and morning according to claim 3, wherein the display means includes elastic biasing means for exerting a biasing force from the non-operating position of the display lever toward the operating position with respect to the display lever main body including the locked portion. -Clock with afternoon display function. 5. A timepiece with a display function for day and morning / afternoon according to claim 4, wherein the elastic biasing means comprises a spring integral with the display lever body. The timepiece with date and morning / afternoon display function according to any one of claims 3 to 5, wherein the display means includes the display lever and a display hand attached to the display lever. And a dial with a date window for displaying the date of the date indicator, and when the winding stem is pulled out to the pull-out position, the cam follower is attached to the morning display cam surface portion or the afternoon display cam surface portion. 7. The day and the morning / afternoon according to any one of claims 2 to 6, wherein the display means in the form of a clause is brought into contact with the display means so that a part of the display means appears in the day window. Clock with display function. The timepiece with date and morning / afternoon display function according to any one of claims 1 to 7, wherein the drawer position is a drawer position for hand alignment.

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