JP6205402B2 - clock - Google Patents

Description

  The present invention comprises a stepper mechanism for periodically feeding a character disk of a digital display section, and a display control driving section which is arranged on the first axis and can be rotationally driven in periodic steps. The present invention relates to a timepiece in which a character disk can be rotationally driven by a drive unit in periodic steps via a display gear train.

  It is often desired to equip a timepiece, particularly a wristwatch, with a hammer mechanism that can be struck according to the time and manually released. In that case, if the digital display unit is forwarded during the hammering operation of the hammer mechanism, the digital display unit that is forwarded in periodic steps will interfere with the parts that define the number of strikes, particularly with the cam plate or closure disk. May occur.

  The object of the present invention is to arrange the function expansion parts around the hammer mechanism that can be squeezed according to the time and can be manually released, thereby avoiding interference between the above-mentioned parts, and also saving space and simplifying. It is to provide a watch that can be made into a model.

  In order to solve this problem, according to the present invention, a timepiece includes a tension spring built in a spring housing, and the movement of the timepiece and a hammer mechanism that generates a sound according to the displayed time are driven by the tension spring. It is possible to provide a release element that can be manually moved from the non-release position to the release position. At the release position of the release element, the hammer mechanism can be released and the display control drive unit or the display gear train can be suppressed.

  If the tension spring in the spring housing is used not only for driving the movement but also for driving the hammer mechanism, the required space can be reduced, and therefore the timepiece can be made compact.

  The display control drive unit or display gear train is automatically deterred during the operation of the hammer mechanism, so that parts that are driven by the display control drive unit or gear train and define the number of impacts, particularly cam plates or closure discs, are provided. Switching is impossible, and there is no collision with a part contacting the cam plate or the closure disk. The character disk on the digital display cannot be switched while the hammer mechanism is operating, but is restored after the hammer mechanism is operated, so that the exact time is displayed again.

  The display control drive unit may have a single-tooth or multi-tooth control drive unit. In this case, not only can the locking element be pivoted periodically within and outside the peripheral region of the teeth in the control drive unit, but also the switching restraining claw can be pivoted when the release element is in the release position.

  Thus, the single-tooth or multi-tooth control drive unit described above can have a dual function while saving space and simplifying the configuration.

  The release element can be configured as a release rocker that can pivot about a predetermined pivot axis between a non-release position and a release position. In this case, the switching lock claw can be driven to turn around the claw axis parallel to the turning axis of the release rocker by the release rocker.

  Also in this case, the release locker can have a dual function while saving space and simplifying the configuration. Since the release of the hammer mechanism and the suppression by the display control drive unit or the display gear train are performed by a single component, that is, the release locker, the display control drive unit or the display gear train is reliably suppressed when the hammer mechanism is released. The

  In a simple embodiment, the above-described release rocker is configured as a two-arm arm, the hammer mechanism can be released by the first arm, and the switching restraining claw can be driven to turn around the claw axis by the second arm.

  The spring housing has a spring housing wheel. This spring housing wheel can be driven to rotate by a crown by means of a first crown wheel that can be engaged with the spring housing wheel via a winding wheel train, and the tension spring in the spring housing can be driven by rotation in the winding direction. Winding is possible. The first crown wheel is supported so as to be able to turn around the first crown wheel axis on a crown wheel lever that can turn around a lever turning axis parallel to the rotation axis of the spring housing wheel. The crown wheel lever is pivoted between an engagement position where the first crown wheel meshes with the spring housing wheel and a non-engagement position where the first crown wheel does not mesh with the spring housing wheel by the second arm of the release rocker. It can be swiveled around an axis. When the crown wheel lever is turned to its non-engagement position, the switching restraining claw can be turned in the peripheral region of the teeth of the single-tooth or multi-tooth control drive unit. On the other hand, in a state where the crown wheel lever is pivoted to the engagement position, the switching restraining claw can pivot outside the peripheral region of the teeth of the single-tooth or multi-tooth control drive unit.

  Also in this case, the crown wheel lever can be provided with a double function while saving the space and simplifying the configuration. That is, on the one hand, when the release element is actuated, the display control drive unit or the display gear train is suppressed, and on the other hand, the winding train connected to the crown is separated from the spring housing, so that it is driven by the spring housing. When the hammer mechanism is activated, the crown does not rotate together.

  In a simple embodiment, the switching detent pawl is configured as a two-arm arm, the first arm of which is configured as a pawl arm that can be swung in the peripheral region of the tooth in a single-tooth or multi-tooth control drive, and the second arm Is configured as a connecting arm whose free end can be turn-loaded by a crown wheel lever.

  In this case, in order to simplify the turning load of the crown wheel lever, the crown wheel lever can be provided with an entrainment slot into which the free end of the connecting arm enters in the radial direction of the lever turning shaft.

  A second crown wheel constituting a winding wheel train connected to the crown is supported on the crown wheel lever so as to be rotatable around a crown axle coaxial with the lever turning shaft and engaged with the first crown wheel. It can be configured. In this case, even if the first crown wheel is separated from the spring housing wheel, the connected state between the first crown wheel and the winding wheel train is maintained. Therefore, when the first crown wheel is re-engaged later, it is only necessary to engage with the spring housing wheel, and it is not necessary to synchronize the first crown wheel with the spring housing wheel and the winding wheel train.

  In order to realize a simplified drive unit for turning the crown wheel lever, a long hole can be formed at the end of the second arm of the release rocker. The slot extends tangentially to the spring housing wheel and orthogonal to the pivoting movement of the second arm. An entrainment pin disposed on the crown wheel lever spaced from the first crown axle can be inserted into the elongated hole. The entrainment pin can be disposed between the first crown axle and the second crown axle in the crown wheel lever.

  In this case, one end of the long hole can be formed in a fork shape.

  If the entraining roller is rotatably supported on the entraining pin, the friction loss can be reduced.

  In particular, when saving space in a watch, the stepper mechanism can be driven to rotate in periodic steps by the stepper device, and the stepper device can also drive the drive shaft that functions as the escapement shaft of the escapement to rotate periodically. Thus, the escapement accumulation spring can be wound up. This not only causes the character disk to be forwarded in periodic steps only by a single stepper device, but also causes the accumulation spring to roll up in the escapement.

It is a perspective view of a stepper mechanism including an escapement, a winding wheel train and a release rocker in a repeater watch. It is a top view in the position just before the event of the stepper mechanism shown in FIG. It is a bottom view in the position just before the event of the stepper mechanism shown in FIG. It is a top view in the position immediately after the event of the stepper mechanism shown in FIG. It is a bottom view in the position immediately after the event of the stepper mechanism shown in FIG. It is a top view which shows the stepper mechanism shown in FIG. 1 in the position after cancellation | release of a hammer mechanism. It is a bottom view which shows the stepper mechanism shown in FIG. 1 in the position after cancellation | release of a hammer mechanism.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  Each figure shows a cylindrical spring housing 1. An external tooth 2 for driving the movement is disposed at the lower end of the spring housing 1.

  A spring core 3 surrounded by a spiral tension spring (not shown) is rotatably arranged in the spring housing 1. The tension spring has an outer end fixed to the inner wall of the spring housing 1 and an inner end fixed to the spring core 3.

  A spring housing wheel 4 is firmly arranged at the upper end of the spring core 3 protruding from the spring housing 1. A first crown wheel 5 constituting a winding wheel train connected to a crown (not shown) of a repeater timepiece can be engaged with the spring housing wheel 4.

  A hammer mechanism drive wheel 6 is engaged with the spring housing wheel 4 at other locations.

  The first crown wheel 5 is supported on the crown wheel lever 7 so as to be rotatable around the first crown wheel shaft 8. The first crown axle 8 extends parallel to the axis of the spring housing wheel 4 and thus to the spring core 3.

  On the crown wheel lever 7, a second crown wheel 9 that engages with the first crown wheel 5 (configures a winding wheel train) is supported so as to be rotatable around the second rotation shaft 10. In this case, the crown wheel lever 7 as a whole is supported so as to be rotatable around a lever turning shaft 20 extending coaxially with the second crown wheel 10.

  The crown wheel lever 7 can turn between an engagement position where the first crown wheel 5 is engaged with the spring housing wheel 4 and a non-engagement position where the crown wheel lever 7 is not engaged.

  At the engagement position where the first crown wheel 5 is engaged with the spring housing wheel 4, the tension spring in the spring housing 1 can be wound up with the crown via the winding wheel train, the second crown wheel 9 and the first crown wheel 5. It is.

  The turning drive portion of the crown wheel lever 7 is configured as a release rocker 11 that can turn around a turning shaft 12 that is arranged in parallel to the spring core 3 outside the spring housing 1 in the radial direction. The release rocker 11 is constituted by a two-arm arm and can be manually turned from the non-release position to the release position against the spring 13.

  The release rocker 11 has a fork-like long hole 15 at the end of the second arm 14 thereof. The long hole 15 extends in a tangential direction with respect to the spring housing wheel 4, and an entraining roller 17 supported rotatably on the entraining pin 16 enters. Furthermore, the entrainment pin 16 is disposed between the first crown wheel 5 and the second crown wheel 9 in the crown wheel lever 7 in parallel with the spring core 3.

  A ratchet claw 19 that engages with the ratchet wheel 28 is disposed at the free end of the first arm 18 of the release rocker 11. When the release rocker 11 is turned from the non-release position to the release position, the first crown wheel 5 is separated from the spring housing wheel 4 on the one hand, and the hammer mechanism is activated by the ratchet pawl 19 rotating the ratchet wheel 28 on the other hand. .

  The hammer mechanism drive wheel 6 is further provided with a free wheel 21. Thereby, when the spring housing wheel 4 rotates in the winding direction, the rotation of the hammer mechanism driving wheel 6 is not transmitted to the hammer mechanism driving system directly connected to the hammer mechanism (not shown) of the repeater watch.

  The first small bottom wheel (third wheel) 30 that is firmly disposed on the drive shaft 44 can be rotationally driven by the spring housing 1 via the intermediate pinion 29.

  The first small bottom wheel 30 is engaged with the display control drive unit 31. The display control drive unit 31 is rotatably disposed on the first shaft 32, and a single tooth control drive unit 33 is rotatably disposed at one end of the first shaft 32.

  Starting from the display control drive unit 33, a display drive wheel (not shown) of a display gear train can be driven to rotate, whereby the minute display disk can be rotated periodically.

  On the minute display disk, numbers 0 to 9 assigned uniformly in the circumferential direction are arranged. In this case, the displayed time can be visually recognized through a window of a watch cover (not shown).

  The single-tooth control drive unit 33 is rotated every minute by the stepper device. As a result, an event occurs in which the single-tooth control drive unit 33 suddenly rotates over about 20 °.

  The drive shaft 44 functioning as an escapement shaft is also rotated by the stepper device every minute, and the escapement accumulation spring 34 is wound up. The accumulation spring 34 is arranged so as to surround the drive shaft 44. The inner end of the accumulation spring 34 is firmly connected to a hub of a second small bottom wheel (third wheel) 35, on which the second small bottom wheel 35 is rotatably supported on a drive shaft 44. ing.

  The second small bottom wheel 35 can continuously rotate and drive the fourth shaft 36 on which the second wheel 37 is arranged. The second wheel 37 is engaged with an escape wheel 38 constituting an escapement of a vibration mechanism in the timepiece.

  An eccentric cam 39 is disposed in one end region of the fourth shaft 36. The eccentric cam 39 is surrounded by a fork 40 at the free end of the first arm 41 of the three-arm lever 42. The three-arm lever 42 is supported so as to be rotatable around a lever shaft 43 parallel to the fourth shaft 36. When the fourth shaft 36 is rotated, the first arm 41 is turned between the first end position and the second end position by the eccentric cam 39.

  A first locking element configured as a first pallet 46 is arranged at the free end of the second arm 45 in the three-arm lever 42. Further, a second locking element configured as a second pallet 48 is disposed at the free end of the third arm 47.

  If the three-arm lever 42 is in the first end position, the first pallet 46 turns into the peripheral region of the tooth 49 in the single-tooth control drive unit 33 arranged on the first shaft 32.

  If the three-arm lever 42 is in the second end position, the first pallet 46 moves away from the peripheral region of the tooth 49. On the other hand, the second pallet 48 turns into the peripheral region of the tooth 53 of the second single gear 50 arranged on the fifth shaft 51 parallel to the fourth shaft 36.

  If the three-arm lever 42 is in the first end position, the second pallet 48 is located away from the peripheral region of the tooth 53 in the second single gear 50.

  The second drive wheel 52 can be driven to rotate by the first small bottom wheel 30 and is supported by the fifth shaft 51.

  If the three-arm lever 42 is in the first end position, the teeth 49 come into contact with the first pallet 46, so that the rotation of the single-tooth control drive unit 33 is suppressed.

  Thereby, the rotation of the first small wheel 30 is also suppressed through the first shaft 32 and the display control unit 31. Accordingly, the first small bottom wheel 30 does not directly wind the accumulation spring 34 by driving the tension spring in the spring housing 1.

  However, the fourth shaft 36 is continuously driven to rotate under the control of the vibration mechanism by the second small wheel 35 loaded by the accumulating spring 34, and accordingly the eccentric cam 39 is also driven to rotate.

  Thus, the escapement is controlled by the vibration mechanism of the watch.

  At this time, the eccentric cam 39 causes the three-arm lever 42 to turn from the first end position toward the second end position.

  As a result, the first pallet 46 is separated from the peripheral region of the teeth 49, and the single-tooth control drive unit 33 is released.

  With this release, the second pallet 48 moves toward the peripheral region of the tooth 53.

  In this case, the first small wheel 30 is slightly rotated together with the drive shaft 44 by the spring force of the tension spring in the spring housing 1.

  At that time, the second driving wheel 52 rotates through the fifth shaft 51 until the teeth 53 come into contact with the second pallet 48.

  Thereafter, the lever 42 pivots from the second end position to the first end position by the eccentric cam 39. At that time, the first pallet 46 moves into the peripheral region of the tooth 49, and the second pallet 48 moves out of the peripheral region of the tooth 53.

  In this case, the tension in the spring housing 1 is maintained until the teeth 49 of the single-tooth control drive 33 abut against the first pallet 46 and thus the rotation of the single-tooth control drive 33 and the first small wheel 30 is restrained. The drive shaft 44, the first small wheel 30, the single-tooth control drive unit 33, and the second single gear 50 are rotationally driven by the spring force of the spring.

  As the single-tooth control drive unit 33 rotates once, the minute display disk also rotates by one digit.

  When the first small wheel 30 is rotated, the accumulation spring 34 for continuously driving the escapement and the vibration mechanism by the second wheel 37 is periodically wound up.

  A damping wheel 54 parallel to the second single gear 50 is disposed on the fifth shaft 51. The damping wheel 54 is engaged with a pinion 55 disposed on an impeller shaft 56 that supports the impeller 57.

  During the movement of the escapement, the impeller 57 is also driven, so that the movement of the escapement is attenuated. As a result, the teeth 49 and 53 do not collide strongly with the pallets 46 and 48, and therefore no rebound occurs.

  The crown wheel 7 has an entrainment slot 58 that opens outward in the radial direction of the lever turning shaft 20, and a corresponding connecting arm 59 projects into the entrainment slot 58. The connecting arm 59 is a first arm of the switching restraining claw 60 supported so as to be rotatable around the claw shaft 61, and a second arm of the switching restraining claw 60 is configured as a claw arm 62. In this case, the claw arm 62 can be swung from the non-engagement position to the engagement position in the peripheral region of the tooth 49 in the single-tooth control drive unit 33, and thus the rotational movement of the control drive unit 33 can be suppressed.

  This is because when the release rocker 11 is turned from the non-release position to the release position, the crown wheel lever 7 that turns the switching restraining claw 60 to the meshing position by the entrainment slot 58 also turns simultaneously.

  When the release rocker 11 is turned back to the non-release position, the switching prevention claw 60 turns again to the non-engagement position where the control drive unit 33 is released.

  2 and 3, the control drive unit 33 is in a state immediately before being released by the first pallet 46. When the first pallet 46 is separated from the peripheral region of the tooth 49, the second pallet 48 moves into the peripheral region of the tooth 53 of the second single gear 50. When the control drive unit 33 is released by the first pallet 46, the control drive unit 33 and the second single gear 50 are about 20 until the second pallet 48 comes into contact with the peripheral region of the teeth 53 of the second single gear 50. This produces an angular motion of °. That is, a so-called event occurs. 2 and 3 show the situation immediately before this event occurs.

  4 and 5 show a state immediately after the above event occurs. In this case, the second wheel 37 continues to rotate together with the eccentric cam 39. The three-arm lever 42 releases the second single gear 50 by the second pallet 48. Accordingly, the first pallet 46 moves again toward the peripheral region of the teeth 49 of the control drive unit 33.

  If the hammer mechanism is not operated, the control drive unit 33 and the teeth 49 of the second single gear 50 are rotated over the remaining 340 ° until they collide with the first pallet 49. In this case, the minute display disk is switched and the cam plate constituting the hammer mechanism is switched by one stage. At the same time, the accumulation spring 34 is wound up by the tension spring in the spring housing 1.

  When the hammer mechanism is actuated by the release rocker 11, the release rocker 11 turns around the operating shaft 12. In the elongated hole 15 of the release rocker 11, the entraining roller 17 disposed on the entraining pin 16 rotates. As a result, the crown wheel lever 7 turns around the second crown axle 10. Since the first crown wheel 5 is rotatably supported on the crown wheel lever 7, it moves together with the crown wheel lever 7. By turning the crown wheel lever 7, the switching prevention claw 60 also turns, and the claw arm 62 reaches the peripheral region of the teeth 49 of the control drive unit 33.

  At the other end of the release rocker 11, a ratchet claw 19 that is entrained during the turning movement of the release rocker 11 and engages with the ratchet claw 28 is disposed. As a result, the ratchet wheel 28 rotates, and thus the hammer mechanism operates.

  6 and 7 show the operating state of the hammer mechanism. In this case, the hammer mechanism wheel train is driven by the rotation of the spring housing wheel 4. While the hammer mechanism is in operation, the switching inhibition claw 60 allows the above-described event, but switching of the minute display disk is inhibited. That is, after the event occurs, the control drive unit 33 and the second single gear 50 continue to produce an angular movement of about 6 °. After this angular movement of 6 ° occurs, the teeth 49 of the control drive unit 33 are generated. Collides with the claw arm 62 of the switching restraining claw 60. Therefore, the minute display disk is not fed, and the cam plate constituting the hammer mechanism is not switched. Thereby, the time displayed when the release locker 11 is operated is reliably notified by the bell. Since the cam plate does not rotate during hammering by the hammer mechanism, it is not damaged by collision.

  While the time change is suppressed, the second wheel 37 and the eccentric cam 39 continue to rotate. This is because these are driven by the accumulation spring 34. Therefore, an accurate time is maintained for the second. With the end of the operation of the hammer mechanism, the release rocker 11 returns to the original position. As a result, the first crown wheel 5 turns so as to re-engage with the spring housing wheel 4, and the delayed time is switched.

1 Spring Housing 2 External Teeth 3 Spring Core 4 Spring Housing Wheel 5 First Crown Wheel 6 Hammer Drive Wheel 7 Crown Wheel Lever 8 First Crown Wheel 9 Second Crown Wheel
10 Second crown axle
11 Release locker
12 Release rocker swivel axis
13 Spring
14 Second arm
15 Long hole
16 Entrainment pin
17 Entrained roller
18 First arm
19 Ratchet claws
20 Lever pivot
21 Freewheel
28 Ratchet car
29 Intermediate pinion
30 First small bottom car
31 Display control drive
32 axis 1
33 Single-tooth control drive
34 Accumulated spring
35 Second small bottom car
36 Axis 4
37 seconds car
38 Ganga
39 Eccentric cam
40 forks
41 First arm
42 Three-arm lever
43 Lever shaft
44 Drive shaft
45 Second arm
46 First palette
47 3rd arm
48 Second palette
49 Single-tooth control drive teeth
50 2nd single gear
51 axis 5
52 Second drive gear
53 Second single gear teeth
54 Damping car
55 pinion car
56 impeller shaft
57 impeller
58 Entrainment Slot
59 articulated arm
60 Switching deterrence claw
61 Claw axis
62 Claw arm

Claims (12)

A timepiece having a stepper mechanism for periodically feeding a character disk of a digital display unit, wherein a display control drive unit (31) capable of being rotationally driven in a periodic step is disposed on a first axis (32), The character disk can be rotationally driven in periodic steps through the display gear train by the display control drive unit (31); the movement of the watch is displayed by the tension spring built in the spring housing (1). time can be driven and the hammer mechanism for sound according to; release element, with a manually movably disposed to the release position from the non-release position, in its release position, the hammer mechanism is released, the display A timepiece in which switching of a part defining the number of hits is suppressed by suppressing the control drive unit (31) or the display gear train. 2. The timepiece according to claim 1, wherein the display control drive unit (31) has a single-tooth or multi-tooth control drive unit (33 ) and meshes with a tooth (49) of the control drive unit (33). The locking element can pivot periodically between the area around the possible tooth (49) and outside the area around the tooth (49) that cannot mesh with the tooth (49) of the control drive (33) In addition, the timepiece is characterized in that when the release element is in the release position, the switching restraining claw (60) is located in the peripheral region of the tooth (49).   3. The timepiece according to claim 2, wherein the release element is configured as a release rocker (11) that can turn around a predetermined turning axis (12) between a non-release position and a release position, and the release rocker. The timepiece according to (11), wherein the switching prevention claw (60) can be driven to rotate around a claw axis (61) parallel to the rotation axis (12).   The timepiece according to claim 3, wherein the release rocker (11) is configured as a two-arm arm, the hammer mechanism can be released by the first arm (18), and the second arm (14) A timepiece characterized in that the switching restraining claw (60) can be pivotally driven around the claw shaft (61). 5. The timepiece according to claim 4 , wherein the spring housing (1) has a spring housing wheel (4), and the spring housing wheel (4) is connected to the spring housing via a winding wheel train by a crown. The first crown wheel (5) that can be engaged with the vehicle (4) can be driven to rotate, and the tension spring in the spring housing (1) can be wound up by rotating in the winding direction; The crown wheel (5) turns around the first crown axle (8) on the crown wheel lever (7) which can turn around the lever turning axis (20) parallel to the rotation axis of the spring housing wheel (4). The crown wheel lever (7) is engaged by the second arm (14) of the release rocker (11) so that the first crown wheel (5) meshes with the spring housing wheel (4). Position and the first The unwinding wheel (5) can be swiveled around the lever swivel axis (20) between the unengaged position where it does not mesh with the spring housing wheel (4); when the crown wheel lever (7) is pivoted to the disengaged position, pivoted peripheral region of the teeth (49) in the control drive of the single tooth or multiple-tooth (33), said crown wheel lever (7) There when pivoted into its engaged position, clock, characterized in that the pivoting out of the peripheral region of the teeth (49) in the drive control unit of a single tooth or multiple-tooth (33). The timepiece according to any one of claims 4 to 5, wherein the switching restraining claw (60) is configured as a two-arm arm, the first arm is configured as a connecting arm (59), and The free end of the crown wheel lever (7) can be swiveled, and the second arm is a claw arm that can swivel in the peripheral region of the tooth (49) of the single-tooth or multi-tooth control drive (33). Watch characterized in that it is configured as (62).   The timepiece according to claim 6, wherein the crown wheel lever (7) has an entrainment slot (58) into which a free end of the connection arm (59) enters in a radial direction of the lever pivot shaft (20). A watch characterized by that.   The timepiece according to any one of claims 5 to 7, wherein the second crown wheel (9) included in the winding wheel train connected to the crown is a crown axle coaxial with the lever turning shaft (20). (10) A timepiece that is rotatably supported around and is engaged with the first crown wheel (5). The timepiece according to any one of claims 4 to 8, wherein a long hole (15) is formed at an end of the second arm (14) of the release rocker (11), and the long hole (15). Extends in a tangential direction with respect to the spring housing wheel (4) and perpendicular to the pivoting movement of the second arm (14), and the elongated hole (15) has the first crown A timepiece characterized in that an entrainment pin (16) disposed on the crown wheel lever (7) spaced from the axle (8) is inserted.   The timepiece according to claim 9, wherein the entrainment pin (16) is disposed between the first crown axle (8) and the second crown axle (10) in the crown wheel lever (7). A watch characterized by   11. The timepiece according to claim 9, wherein an entraining roller (17) is rotatably supported on the entraining pin (16).   The timepiece according to any one of claims 1 to 11, wherein the stepper mechanism can be periodically rotated by a stepper device, and a drive shaft (44) functioning as an escapement shaft by the stepper device. ) Can also be periodically rotated, whereby the escapement accumulation spring (34) can be wound up.