CN111258203A - Intermittent reciprocating motion control mechanism - Google Patents
Intermittent reciprocating motion control mechanism Download PDFInfo
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- CN111258203A CN111258203A CN201811459552.3A CN201811459552A CN111258203A CN 111258203 A CN111258203 A CN 111258203A CN 201811459552 A CN201811459552 A CN 201811459552A CN 111258203 A CN111258203 A CN 111258203A
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- 230000033001 locomotion Effects 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 title claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 56
- 230000000712 assembly Effects 0.000 claims abstract description 3
- 238000000429 assembly Methods 0.000 claims abstract description 3
- 238000005096 rolling process Methods 0.000 claims description 17
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000002457 bidirectional effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 239000007858 starting material Substances 0.000 description 1
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- G04B13/026—
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- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B13/00—Gearwork
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Abstract
The invention discloses an intermittent reciprocating motion control mechanism, which comprises a starting assembly, a command assembly, a cam assembly, a transmission assembly and a reciprocating motion display assembly, wherein the starting assembly is used for starting the cam assembly; the starting wheel in the starting assembly is meshed with the command wheel sheet in the command assembly, and the command wheel lower sheet in the command assembly is meshed with the transmission wheel shaft in the transmission assembly; the driving wheel sheets in the driving assembly respectively drive the two groups of reciprocating motion display assemblies to work. The intermittent reciprocating mechanism has the beneficial effects that the lower piece of the command wheel combines the command wheel component and the cam component, so that the transmission wheel piece is rotated and drives the two groups of pointer components to rotate in the forward direction and the reverse direction respectively, namely, the intermittent reciprocating mechanism of the two groups of components is synchronously operated by one group of control mechanism, the indication is accurate, and the motion is stable.
Description
Technical Field
The invention relates to a control mechanism for intermittent reciprocating motion; in particular, to a mechanism capable of controlling two intermittent reciprocating motions in a mechanical watch.
Background
The mechanical watch has the main function of reading time, but along with the development of the mechanical watch, the mechanical watch is endowed with a plurality of additional functions (such as calendar display, energy display, timing function and the like) besides timing, the development of the current watch tends to a new and odd development direction, the artistic and appreciation properties of the watch are greatly improved by one mechanism of the mechanical watch, and meanwhile, the personalized requirements of people for novelty and beauty can be met.
The patent publication No. CN105446112A discloses an intermittent reciprocating structure, but the above technical solution structure belongs to a link structure, and has large accumulated error, poor consistency of two movements, complex mechanism, poor manufacturability, and difficulty in processing.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a mechanism capable of simultaneously controlling two intermittent reciprocating motions in a mechanical watch.
The technical scheme adopted by the invention is that the intermittent reciprocating motion control mechanism comprises a starting component, a command component, a cam component, a transmission component and a reciprocating motion display component; the starting wheel in the starting assembly is meshed with the command wheel sheet in the command assembly, and the command wheel lower sheet in the command assembly is meshed with the transmission wheel shaft in the transmission assembly; the driving wheel sheets in the driving assembly respectively drive the two groups of reciprocating motion display assemblies to work.
The starting assembly comprises a starting wheel and a starting gear shaft which are pressed into a whole; the starting wheel is a combination of toothed wheels and toothless wheels;
the command wheel assembly comprises a command wheel sheet and a command wheel lower sheet which are fixed on a command wheel shaft; the circumferential surfaces of the starting wheel and the command wheel sheet are a combination of teeth and missing teeth, the number of the teeth of the starting wheel is N, and the number of the teeth of the command wheel sheet participating in rotation is N-1;
the cam component comprises a cam gear shaft and a cam which are fixed into a whole,
the transmission assembly comprises a transmission wheel shaft, a rolling shaft and a transmission wheel sheet which are fixed together.
The tips of the teeth on both sides of the starter wheel are shorter than the other teeth.
The transmission wheel sheet is loosely matched with the rolling shaft.
The lower piece of the command wheel is meshed with the cam gear shaft, and the number of teeth corresponding to the rotating angle of the lower piece of the command wheel in each reciprocating period is the same as the number of teeth around the cam gear shaft; the cam fixed with the gear tooth shaft into a whole is always contacted with the rolling shaft fixed on the transmission wheel sheet.
When the reciprocating motion display assembly is a pointer wheel assembly; the pointer comprises a first pointer wheel shaft and a first pointer wheel which are fixed into a whole, and a second pointer wheel shaft and a second pointer wheel which are fixed into a whole; the transmission wheel sheet is meshed with the first pointer wheel, the transmission wheel sheet is meshed with the intermediate wheel, and the transmission wheel sheet reversely drives the second pointer wheel to rotate through the intermediate wheel.
The reciprocating motion display component is a pointer, a bridge opened and closed at fixed time, a dancer with different actions or a reciprocating motion doll.
The gear missing part of the command wheel sheet is a command wheel locking arc, the gear missing part of the starting wheel is a starting wheel locking arc, and the command wheel locking arc and the starting wheel locking arc are in friction fit.
The command wheel locking arc and the starting wheel locking arc are in clearance fit, and the intermittent reciprocating motion control mechanism further comprises a positioning rod for stopping.
The invention has the advantages that the lower piece of the command wheel combines the command wheel component and the cam component, so that the transmission wheel piece is rotated and drives the two groups of pointer components to rotate in the forward direction and the reverse direction respectively, namely, the intermittent reciprocating mechanism of the two groups of components is synchronously operated by one group of control mechanism, the indication is accurate, and the motion is stable.
Drawings
FIG. 1 is a schematic plan view of the initial position of the control mechanism of the present invention;
FIG. 2 is a schematic view of the control mechanism of the present invention in its highest position;
FIG. 3 is an axial schematic view of the control mechanism of the present invention;
FIGS. 4 and 5 are schematic views showing the initial position and the uppermost position of the mechanism of the present invention, respectively;
FIG. 6 is a schematic view of portions of the actuator wheel of the control mechanism of the present invention;
FIG. 7 is a schematic view of portions of a command wheel of the control mechanism of the present invention;
FIG. 8 is a schematic view of portions of the cam of the control mechanism of the present invention;
FIG. 9 is a schematic view of the construction of the activation wheel and command wheel of the present invention;
FIG. 10 is a schematic view of the anti-rotation structure of the starting wheel of the present invention by the positioning rod.
In the figure:
1. double hour wheel 2, starting wheel 3, starting gear shaft
4. Command wheel lower sheet 5, command wheel shaft 6, command wheel sheet
7. Driving wheel sheet 8, driving wheel shaft 9, rolling shaft
10. Cam gear shaft 11, cam 12 and intermediate wheel
13. First pointer wheel 14, return spring A15, first pointer shaft
16. First fixed spring 17, first screw 18 and second pointer wheel
19. Second return spring 20, second pointer wheel shaft 21, second spring fixing sheet
22. Second screw 23 positioning rod.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
as shown in fig. 1 to 6, the present invention is a mechanism for simultaneously controlling two intermittent reciprocating motions, including an actuating portion, a command portion, a transmission portion, a cam portion, a pointer wheel portion, and a return spring portion. The starting part comprises a double hour wheel, a starting wheel and a starting gear shaft; the command wheel part comprises a command wheel shaft, a command wheel sheet and a command wheel lower sheet; the transmission part comprises a transmission wheel shaft, a transmission wheel sheet and a rolling shaft; the cam part comprises a cam gear shaft and a cam; the pointer wheel part comprises a first pointer wheel, a second pointer wheel, a first pointer wheel shaft and a second pointer wheel shaft; the return spring part comprises a return spring A, a second return spring, a first fixed spring sheet, a second fixed spring sheet, a first screw and a second screw.
The starting part comprises a double hour wheel 1, a starting wheel 2 and a starting gear shaft 3, the starting wheel 2 and the starting gear shaft 3 are fixed together, the double hour wheel 1 rotates to drive the starting gear shaft 3 and the starting wheel 2 to rotate, as shown in fig. 6, the starting wheel 2 is a partial gear with missing teeth, the part of the gear missing teeth between 2a and 2b of the starting wheel 2 is a starting wheel locking arc, and the parts 2c and 2d are two short teeth.
The command portion includes a command wheel shaft 5, a command wheel plate 6, a command wheel lower plate 4, and both the command wheel plate 6 and the command wheel lower plate 4 are fixed to the command wheel shaft 5. The starting wheel 2 rotates to drive the command wheel sheet 6 to rotate. As shown in fig. 7, the portions 6a, 6b, 6c of the command wheel piece 6 are command wheel locking arcs, and the command wheel locking arcs are in friction fit with the starting wheel locking arcs of the starting wheel 2. The command wheel sheet 6 always has a movement trend opposite to the working movement direction thereof, namely a reverse movement trend, under the action of the second return spring of the return spring A, B, and the non-return effect of the starting wheel 2 on the command wheel sheet 6 is realized through the friction fit between the command wheel locking arc and the starting wheel locking arc.
As shown in fig. 10, when the command wheel locking arc and the starting wheel locking arc are in clearance fit, a positioning rod 23 may be disposed on any one gear (wheel piece or wheel axle) in the transmission process of controlling two clearance reciprocating mechanisms simultaneously, so as to perform the functions of anti-rotation and anti-reverse.
The transmission part comprises a transmission wheel shaft 8, a transmission wheel sheet 7 and a rolling shaft 9, the rolling shaft 9 is fixed with the transmission wheel sheet 7, the transmission wheel sheet 7 is loosely matched with the rolling shaft 9, and the rolling shaft 9 can rotate around the central shaft of the rolling shaft relative to the transmission wheel sheet 7.
The cam comprises a cam gear shaft 10 and a cam 11, wherein the cam gear shaft 10 and the cam 11 are fixed together. The lower piece 4 of the command wheel rotates to drive the cam gear shaft 10 to rotate, the cam gear shaft 10 rotates to drive the cam 11 to rotate, the cam 11 rotates to drive the rolling shaft 9 to rotate, and the rolling shaft 9 rotates to drive the transmission wheel piece 7 to rotate. The cam 11 is divided into three parts, ab arc, bc arc and ca arc. According to the requirement of the invention, ab arc is designed to have increasing radius, bc arc is designed to have equal radius, and ca arc is designed to have decreasing radius; that is, when the cam 11 rotates counterclockwise, the ab arc participates in the work, the bidirectional pointer is slowly raised along with the increment of the radius of the cam, when the cam 11ac arc participates in the work, the bidirectional pointer is slowly lowered along with the decrement of the radius of the cam, when the cam 11bc participates in the work, the bidirectional pointer is static along with the constant radius of the cam, the length of the bc arc of the cam 11 determines the static time of the bidirectional pointer, and the radius change lengths of the ab arc and the ca arc determine the rising angle of the bidirectional pointer.
The pointer wheel part comprises a first pointer wheel shaft 15, a second pointer wheel shaft 20, a first pointer wheel 13 and a second pointer wheel 18, the first pointer wheel shaft 15 and the first pointer wheel 13 are fixed together, the second pointer wheel shaft 20 and the second pointer wheel 18 are fixed together, the transmission wheel sheet 7 rotates to drive the first pointer wheel 13 to rotate, the transmission wheel sheet 7 rotates to drive the intermediate wheel 12 to rotate, and the intermediate wheel 12 rotates to drive the second pointer wheel 18 to rotate.
The return spring part comprises a return spring A14, a second return spring 19, a first spring fixing piece 16, a second spring fixing piece 21, a first screw 17 and a second screw 22. The return spring a14 is fixed to the first pointer wheel shaft 15, and the other end of the return spring a14 is fixed to the first spring fixing plate 16 by a first screw 17. The second return spring 19 is fixed to the second pointer shaft 20, and the other end of the second return spring 19 is fixed to a second fixing spring 21 and fixed by a second screw 22. When the return spring part is installed, a certain pretightening force is needed to ensure that the first pointer wheel 13 is always meshed with the transmission wheel sheet 7 and simultaneously ensure that the rolling shaft 9 on the transmission wheel sheet 7 is always contacted with the cam 11; the second pointer wheel 18 is meshed with the intermediate wheel 12, the intermediate wheel 12 is always meshed with the transmission wheel sheet 7, and meanwhile, the roller 9 on the transmission wheel sheet 7 is also ensured to be always contacted with the cam 11, so that the tooth side clearance between gears is eliminated, the pointer is prevented from being asynchronous when being started and returned, and the pointer is prevented from shaking in the motion process.
In the whole movement process, the transmission wheel sheet 7 respectively drives the movement in two directions, and one side directly drives the first pointer wheel 13; the other side drives the intermediate wheel 12 first, and then the intermediate wheel 12 drives the second pointer wheel 18. The intermediate wheel 12 can change the direction, so that one wheel can drive the movement in two directions simultaneously, and the consistency of the movement can be ensured.
The working process of the device for simultaneously controlling the two intermittent reciprocating mechanisms to be in the working state is as follows:
as shown in fig. 1 to 5, a process of simultaneously controlling the operation of two intermittent reciprocating mechanisms will be described in detail. A method for simultaneously controlling the starting positions of two intermittent reciprocating mechanisms as shown in fig. 1 and fig. 3. The double hour wheel 1 rotates clockwise to drive the starting gear shaft 3 to rotate anticlockwise, the starting gear shaft 3 is fixed with the starting wheel 2, the starting wheel 2 also rotates anticlockwise, the toothed part of the starting wheel 2 drives the command wheel sheet 6 to rotate clockwise by a certain angle, the command wheel sheet 6 is fixed with the command wheel lower sheet 4 through the command wheel shaft 5, therefore, the command wheel sheet 6 rotates clockwise by a certain angle, the command wheel shaft 5 and the command wheel lower sheet 4 also rotate clockwise by a certain angle, the number of teeth corresponding to the rotating angle of each reciprocating period of the command wheel lower sheet 4 is the same as the number of teeth of one circle of the cam gear shaft 10, and the command wheel lower sheet 4 rotates clockwise by a certain angle to drive the cam gear shaft 10 to rotate anticlockwise by a circle; the cam gear shaft 10 and the cam 11 are fixed together, and the cam gear shaft 10 rotates anticlockwise to drive the cam 11 to rotate anticlockwise. As shown in fig. 8, the outer edge working part of the cam 11 is divided into an ab arc, a bc arc and a ca arc, the ab arc rotates anticlockwise by the cam 11 to drive the roller 9 to move clockwise for a certain angle, and the roller 9 drives the transmission wheel sheet 7 to move clockwise for a certain angle; the cam 11 rotates anticlockwise to enable the ca arc to drive the rolling shaft 9 to move anticlockwise for a certain angle, and the rolling shaft 9 drives the transmission wheel sheet 7 to move anticlockwise for a certain angle; cam 11 anticlockwise rotates bc arc can not drive roller 9 and move, and roller 9 can not drive driving wheel piece 7 and move.
When the cam 11 drives the transmission wheel piece 7 to rotate clockwise by a certain angle, the transmission wheel piece 7 drives the first pointer wheel 13 to rotate anticlockwise by a certain angle, at this time, the return spring a14 is in a winding state, the first pointer wheel 13 is fixed with the first pointer wheel shaft 15, the pointer is mounted on the first pointer wheel shaft 15, and at this time, the pointer is in a slowly-raised state. When the cam 11 drives the transmission wheel piece 7 to rotate counterclockwise by a certain angle, the transmission wheel piece 7 drives the first pointer wheel 13 to rotate clockwise by a certain angle, at this time, the return spring a14 is in a relaxed state, the first pointer wheel 13 is fixed with the first pointer wheel shaft 15, the pointer is mounted on the first pointer wheel shaft 15, and at this time, the pointer is in a slow return state. When the cam 11 continues to rotate counterclockwise, that is, the cam 11ab arc is engaged, the driving wheel 7 is stationary, that is, the needle is in a stationary state.
Meanwhile, the intermediate wheel 12 changes the direction of the last pointer movement, that is, when the ab arc of the cam 11 drives the roller 9 to move clockwise by a certain angle, and the roller 9 drives the transmission wheel 7 to rotate clockwise by a certain angle, the transmission wheel 7 drives the intermediate wheel 12 to rotate counterclockwise first, the intermediate wheel 12 drives the second pointer wheel 18 to rotate clockwise by a certain angle, at this time, the second return spring 19 is in a tightly-wound state, the second pointer wheel 18 and the second pointer wheel shaft 20 are fixed together, the pointer is mounted on the second pointer wheel shaft 20, and at this time, the pointer is in a slowly-lifted state. When the cam 11ac drives the transmission wheel piece 7 to rotate counterclockwise by a certain angle, the transmission wheel piece 7 firstly drives the intermediate wheel 12 to rotate clockwise, the intermediate wheel 12 drives the second pointer wheel 18 to rotate counterclockwise by a certain angle, the return spring A14 is in a relaxed state at the moment, the second pointer wheel 18 and the second pointer wheel shaft 20 are fixed together, the second pointer wheel shaft 20 is provided with a pointer, and the pointer is in a slow falling state at the moment. When the cam 11 continues to rotate counterclockwise, that is, the cam 11bc is engaged, the driving wheel 7 is stationary, that is, the needle is in a stationary state.
The transmission wheel sheet 7 drives the two sides to move simultaneously, so the mechanism moves simultaneously, the intermediate wheel 12 changes the direction, and the moving directions of the two sides are opposite.
FIG. 10 is a schematic view of the anti-rotation structure of the starting wheel of the present invention by the positioning rod.
The basic technical concept of the invention can also realize the purpose of the invention by transmitting with basically the same structure and changing the appearance or fixing mode of parts. As shown in fig. 9, the object of the present invention can be achieved by changing the structure of the starting wheel and the command wheel piece. The fixing mode of the return spring of the mechanism is changed, and the type of the spring can be changed; the cam can be designed to be in a working state at various angles, and the rest degrees are in an intermittent state; the design directions of the pointers with opposite bidirectional movements can be the same; the reciprocating display assembly may also be designed as a pointer, a timed opening and closing bridge, a dancer with different motions, or a reciprocating doll. The embodiments that can be imagined by those skilled in the art without creative efforts belong to the protection scope of the invention.
Claims (9)
1. An intermittent reciprocating motion control mechanism is characterized by comprising a starting assembly, a command assembly, a cam assembly, a transmission assembly and a reciprocating motion display assembly; the starting wheel in the starting assembly is meshed with the command wheel sheet in the command assembly, and the command wheel lower sheet in the command assembly is meshed with the transmission wheel shaft in the transmission assembly; the driving wheel sheets in the driving assembly respectively drive the two groups of reciprocating motion display assemblies to work.
2. The intermittent reciprocating motion control mechanism of claim 1, wherein the start assembly comprises a start wheel (2) and a start pinion (3) that are press-fitted together; the starting wheel (2) is a combination of a toothed wheel and a non-toothed wheel;
the command wheel assembly comprises a command wheel sheet (6) and a command wheel lower sheet (4) which are fixed on a command wheel shaft (5); the circumferential surfaces of the starting wheel (2) and the command wheel sheet (6) are a combination of teeth and missing teeth, the number of teeth of the starting wheel (2) is N, and the number of teeth of the command wheel sheet (6) participating in rotation is N-1;
the cam component comprises a cam gear shaft (10) and a cam (11) which are fixed into a whole,
the transmission assembly comprises a transmission wheel shaft (8), a rolling shaft (9) and a transmission wheel sheet (7) which are fixed together.
3. The intermittent reciprocating motion control mechanism of claim 2, wherein the teeth of the start wheel (2) have tips on both sides of the teeth that are shorter than the other teeth.
4. The intermittent reciprocating motion control mechanism of claim 2, wherein the drive wheel plate (7) is loosely fitted with the roller (9).
5. The intermittent reciprocating motion control mechanism as claimed in claim 1, wherein the command wheel lower plate (4) is engaged with the cam gear shaft (10), and the number of teeth corresponding to the angle of rotation of the command wheel lower plate (4) per reciprocating period is the same as the number of teeth in one circle of the cam gear shaft (10); a cam (11) fixed with the gear shaft (10) into a whole is always contacted with a rolling shaft (9) fixed on the transmission wheel sheet (7).
6. The intermittent reciprocation control mechanism of claim 1, wherein the reciprocation display assembly is a pointer wheel assembly; comprises a first pointer wheel shaft (15) and a first pointer wheel (13) which are fixed into a whole, and a second pointer wheel shaft (20) and a second pointer wheel (18) which are fixed into a whole; the transmission wheel sheet (7) is meshed with the first pointer wheel (13), the transmission wheel sheet (7) is meshed with the intermediate wheel (12), and the transmission wheel sheet (7) reversely drives the second pointer wheel (18) to rotate through the intermediate wheel (12).
7. The intermittent reciprocation control mechanism of claim 1, wherein the reciprocation display assembly is a pointer, a timed on/off bridge, a dancer with different motions, or a reciprocating doll.
8. The intermittent reciprocating motion control mechanism of claim 2, wherein the missing tooth portion of the command wheel piece (6) is a command wheel locking arc, the missing tooth portion of the starting wheel (2) is a starting wheel locking arc, and the command wheel locking arc and the starting wheel locking arc are in friction fit.
9. The intermittent reciprocation control mechanism of claim 2 wherein the command wheel locking arc is a clearance fit with the starting wheel locking arc, the intermittent reciprocation control mechanism further comprising a detent lever for backstopping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811459552.3A CN111258203B (en) | 2018-11-30 | 2018-11-30 | Intermittent reciprocating motion control mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811459552.3A CN111258203B (en) | 2018-11-30 | 2018-11-30 | Intermittent reciprocating motion control mechanism |
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| Publication Number | Publication Date |
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| CN111258203A true CN111258203A (en) | 2020-06-09 |
| CN111258203B CN111258203B (en) | 2023-11-07 |
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| CN201811459552.3A Active CN111258203B (en) | 2018-11-30 | 2018-11-30 | Intermittent reciprocating motion control mechanism |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2676246Y (en) * | 2004-01-09 | 2005-02-02 | 上海表业有限公司 | Reciprocating time interval indicating mechanism of horologe |
| CN101107577A (en) * | 2005-01-24 | 2008-01-16 | 精工爱普生株式会社 | Display device for timepiece, movement, and timepiece |
| CN201278088Y (en) * | 2008-09-26 | 2009-07-22 | 天津海鸥表业集团有限公司 | Hour and minute returning indication mechanism for watch |
| JP2010197077A (en) * | 2009-02-23 | 2010-09-09 | Seiko Instruments Inc | Retrograde display mechanism, calendar display mechanism with the same, and analog timepiece with the mechanisms |
| JP2014062784A (en) * | 2012-09-20 | 2014-04-10 | Seiko Instruments Inc | Display mechanism, clock movement, and mechanical clock |
| CN105446112A (en) * | 2014-08-27 | 2016-03-30 | 天津海鸥表业集团有限公司 | Intermittent reciprocating motion control system in watch |
| CN209417527U (en) * | 2018-11-30 | 2019-09-20 | 天津海鸥表业集团有限公司 | intermittent reciprocating motion control mechanism |
-
2018
- 2018-11-30 CN CN201811459552.3A patent/CN111258203B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2676246Y (en) * | 2004-01-09 | 2005-02-02 | 上海表业有限公司 | Reciprocating time interval indicating mechanism of horologe |
| CN101107577A (en) * | 2005-01-24 | 2008-01-16 | 精工爱普生株式会社 | Display device for timepiece, movement, and timepiece |
| CN201278088Y (en) * | 2008-09-26 | 2009-07-22 | 天津海鸥表业集团有限公司 | Hour and minute returning indication mechanism for watch |
| JP2010197077A (en) * | 2009-02-23 | 2010-09-09 | Seiko Instruments Inc | Retrograde display mechanism, calendar display mechanism with the same, and analog timepiece with the mechanisms |
| JP2014062784A (en) * | 2012-09-20 | 2014-04-10 | Seiko Instruments Inc | Display mechanism, clock movement, and mechanical clock |
| CN105446112A (en) * | 2014-08-27 | 2016-03-30 | 天津海鸥表业集团有限公司 | Intermittent reciprocating motion control system in watch |
| CN209417527U (en) * | 2018-11-30 | 2019-09-20 | 天津海鸥表业集团有限公司 | intermittent reciprocating motion control mechanism |
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| CN111258203B (en) | 2023-11-07 |
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