CN106896693A - Perpendicular separation and reunion structure for wrist-watch - Google Patents

Abstract

The invention discloses a vertical clutch structure for a watch, which comprises a clutch lever component, a central wheel component and a clutch lever spring, wherein the clutch lever component is connected with the central wheel component through a connecting rod; the lever assembly and the central wheel assembly are fixed between the two layers of clamping plates, the lever assembly can swing under the action of external force, and the clutch lever spring is always in contact with the clutch lever assembly. The beneficial effects are that: due to the use of the circle internal contact clutch mode, the friction area is enlarged, and simultaneously the friction force arm is lifted to the maximum as possible, thereby being beneficial to the starting of the gear train; the motion of the clutch lever component relative to the cone pulley is radial motion and tangential motion, so that tangential force to the cone pulley is generated at the last stage of the opening motion of the clamp, and a motion trend beneficial to the starting of a gear train is formed; this simple structure, operation are reliable, the manufacturability is good, have avoided because of using the ageing function loss or the unstable problem that causes of organic matter, and simultaneously, separation and reunion lever subassembly provides the start friction for the train, reduces the influence to the time of walking.

Description

A vertical clutch structure for a watch

technical field

The invention relates to a watch component, in particular to a vertical clutch structure for a watch.

Background technique

At present, the vertical clutch structure has been widely used in chronograph movements. The vertical clutch structure has a tendency to replace the traditional planar clutch structure due to its advantages such as small plane space, high axial space utilization rate, and no beating when the second hand starts. A vertical clutch device is described in the publication number CN101324782A. Figure 7 is a schematic plan view of the vertical clutch device. It adopts the method of two coaxial moving parts, and through the friction mechanism between the two, one of them can be moved in the connected position. The rotation of the part is transmitted to the second moving part. This is almost the inherent design of all vertical clutch devices. The novelty in the publication number CN101324782A is the use of organic materials of "viscoelastic materials", such as natural rubber or synthetic rubber, chlorocarbon rubber, polybutadiene, polyurethane, silicon Copper, etc. to increase its reliability.

Simultaneously, the closing of the clutch by a set of clips (21, 22) makes the moving parts away from each other against the force of the spring, and the opening of the clips (21, 22) makes the moving parts contact each other under the action of the spring. When the clamp is opened (connected position), the contact of the moving parts will be maintained by the spring, and the first moving part (2) drives the second moving part (1) through friction. When the clamps (21, 21) are closed (disconnected position), the second moving part (1) is not in contact with the first moving part (2), and thus is not driven. Here, the clamps (21, 21) only play the role of opening and closing.

The publication number is CN101324782A. In the technical scheme shown in Fig. 8, although the viscoelastic material used makes the frictional force between the moving parts large enough in the connection position, the springs that keep the moving parts in contact should have a large force. At the same time, it can avoid various disadvantages caused by the use of lubricating oil. However, the viscoelastic material used in the technical solution is an organic matter, which also has the problems of aging and deterioration, and then causes the mechanism to fail. In addition, the function of the fixture is too simple, especially in the chronograph movement, the vertical clutch device is often placed at the end of the transmission, and it will receive a relatively large impact at the moment of starting, which will affect the travel time.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a vertical clutch structure for watches with a stable mechanical structure and favorable start of the gear train.

The technical solution adopted in the present invention is: a vertical clutch structure for watches, including a clutch lever assembly, a center wheel assembly and a clutch lever spring; the lever assembly and the center wheel assembly are fixed in the middle of two splints simultaneously, and The lever assembly can swing under the action of external force, and the clutch lever spring is always in contact with the clutch lever assembly.

The clutch lever assembly includes a riveted long lever and a short lever part, and the riveted clutch lever assembly can flexibly complete contraction and relaxation movements;

The central wheel assembly includes a central second part, a second tooth part, a spring, and a retaining ring; the second tooth part is coaxial with the central second part, and the second tooth part can slide on the central second part; the spring and retaining ring control the second The relative position of the tooth part and the central second part.

The short lever part includes a short lever and a lever shaft pressed together; the clutch lever assembly is placed on the fixed splint through the two lever shafts, and the clutch lever assembly can swing synchronously to a certain extent according to the linkage of the connecting rod, and the swing is flexible;

The central second part includes a clutch spring and a second peach spacer that are press-fitted to the central second shaft to form a whole; The second gear plate and the second pinion bevel are connected as a whole; the clutch spring is placed in the second pinion bevel.

When the structure is started, the lever assembly is stretched under the action of the clutch lever spring, and maintains a relatively stable static state; the center wheel assembly rotates together with other gears in the wheel train.

The long lever is disengaged from the second pinion bevel, the outer working end of the clutch spring is in friction contact with the inner side of the second pinion bevel, and the center wheel assembly can run synchronously and normally in the gear train.

When the lever assembly is in the retracted state, the long lever is in contact with the second pinion bevel and presses down the second pinion bevel, the second gear moves downward along the second pinion, and the outer working end of the clutch spring is in contact with the second pinion. The inner side of the shaft cone is disengaged.

The beneficial effects of the present invention are: due to the use of the circle inscribed clutch mode, while increasing the friction area, the friction arm is also raised to the maximum as much as possible, thereby facilitating the start of the wheel train; the movement of the clutch lever assembly relative to the cone wheel is eliminated In addition to the radial movement, there is also a tangential movement, so that a tangential force is generated on the cone wheel at the end of the clamp opening movement, and also forms a movement trend that is conducive to the start of the gear train; the structure is simple, reliable and manufacturable Well, the problem of function loss or instability caused by the aging of organic substances is avoided. At the same time, the clutch lever assembly provides starting friction for the wheel train and reduces the impact on travel time.

Description of drawings

Vertical clutch structure plane schematic diagram when Fig. 1 timing starting state of the present invention;

Figure 2 is an axial schematic diagram of the vertical clutch structure in the timing start state of the present invention;

Figure 3 is a schematic plan view of the vertical clutch structure in the stopped state of timing of the present invention;

Figure 4 is an axial schematic diagram of the vertical clutch structure in the timing stop state of the present invention;

Figure 5 is a schematic diagram of a three-dimensional view of the clutch spring of the present invention;

Fig. 6 is a three-dimensional schematic diagram of the vertical clutch structure of the present invention;

Figure 7 and Figure 8 are schematic plan views of a conventional vertical clutch device.

In the picture:

10: clutch lever assembly 11: long lever 12: short lever part

12a: Short lever 12b: Lever shaft 20: Center wheel assembly

21: Center seconds part 21a: Center seconds shaft 21b: Clutch spring

21c: Second Peach Spacer 22: Second Gear Part 22a: Second Pinion

22b: Second gear plate 22c: Second pinion bevel wheel 22d: Second pinion

23: Spring 24: Retaining ring 30: Clutch lever spring.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

As shown in Figures 1 to 6, a vertical clutch structure for a wristwatch of the present invention includes a clutch lever assembly 10, a center wheel assembly 20 and a clutch lever spring 30; the lever assembly 10 and the center wheel assembly 20 are fixed on the Between the two layers of splints, the lever assembly 10 can swing under the action of an external force, and the clutch lever spring 30 is always in contact with the clutch lever assembly 10 .

The clutch lever assembly 10 includes a riveted long lever 11 and a short lever part 12, the riveted clutch lever assembly 10 can flexibly complete contraction and relaxation within a certain range; the short lever part 12 includes a press fit An integrated short lever 12a and a lever shaft 12b; the clutch lever assembly 10 is placed in the fixed splint through the two lever shafts 12b, and the clutch lever assembly 10 can swing synchronously to a certain extent according to the linkage of the connecting rod, and the swing is flexible.

The center wheel assembly 20 includes a central second part 21, a second tooth part 22, a spring 23, and a retaining ring 24; the second tooth part 22 is coaxial with the central second part 21, and the second tooth part 22 can slide on the central second part 21, so The spring 23 and the stop ring 24 control the relative position of the second tooth part 22 and the central second part 21 . The central second part 21 includes a clutch spring 21b and a second peach spacer 21c that are pressed onto the central second shaft 21a; the second tooth part 22 includes a second pinion 22a, a second gear plate 22b, and a second pinion riveted together. The bevel wheel 22c and the second gear pin 22d connecting the second gear plate 22b and the second pinion bevel wheel 22c as a whole; the clutch spring 21b is placed in the second pinion bevel wheel 22c.

Working process of the present invention is as follows:

As shown in Fig. 1 and Fig. 2, the clutch lever assembly 10 and the center wheel assembly 20 are fixed in the middle of the two-layer splint at the same time, the clutch lever assembly 10 can swing under the action of external force, and relax under the effect of the clutch lever spring 30, and maintain a relatively stable static state. The center wheel assembly 20 can rotate in the wheel train and play a transmission role.

As shown in Figure 2, in the initial state, in the center wheel assembly 20, the spring 23 is in a half-release state, the second tooth part 22 is lifted by the elastic force of the spring 23, and the end face of the clutch spring 21b is forced to open, resulting in deformation, and its outer side works The end surface 21b' and the inner side 22c' of the second pinion bevel wheel 22c form a whole through frictional fit, so that the center wheel assembly 20 can run synchronously and normally in the gear train.

As shown in Figure 3 and Figure 4, when the clutch lever assembly 10 is subjected to an external force, the clutch lever assembly 10 is deformed, and the two long levers 11 gradually shrink under the linkage action of the connecting rod, and gradually align with the second pinion bevel wheel 22c contact, the second pinion bevel 22c moves downward along the second pinion 22a under the external force of the two long levers 11, because the second pinion bevel 22c is a part of the second gear 22, so the second gear moves along the second pinion 22a. The gear shaft 22a moves downward axially, and as the second gear part 22 moves downward axially, the deformation of the clutch spring 21b gradually disappears and returns to its original shape. Contact, the friction force disappears, and the movement of the second tooth part 22 cannot drive the center second part 21 to rotate. At this time, the spring 23 is deformed and further compressed because the second tooth part 22 moves downward. At the same time, the clutch lever spring 30 is also deformed due to the change of the clutch lever assembly 10 , and elastic potential energy is stored.

And when the external force acting on the clutch lever assembly 10 is withdrawn, the clutch lever assembly 10 returns to the initial state under the effect of the clutch lever spring 30, and now two long levers 11 do not contact with the second pinion bevel wheel 22c. At the same time, the elastic force of the spring 23 is released, pushing the second gear part 22 to move axially upward until the outer working end surface 21b' of the clutch spring contacts the inner wall 22c' of the second gear shaft bevel wheel 22c again, and becomes a whole through friction, the second gear part 22 can drive the center second part 21 to rotate synchronously again, make the center second assembly 20 normal operation.

The wristwatch of the present invention uses a vertical clutch structure, and realizes the effect of the horizontal clutch through the vertical clutch mode, which can avoid irregular jumping when the chronograph second hand starts; the traditional vertical clutch mode often needs to occupy a relatively large force arm in order to obtain a large enough force arm. Large plane space, and higher requirements for machining accuracy of parts. The structure used in the present invention can reduce the use of plane space as much as possible; because the traditional horizontal clutch uses the circumscribed circle clutch mode, the tangential friction cannot achieve the desired effect, so the sharp gear clutch is used. The structure of the present invention uses the circle inscribed clutch mode, While the friction area is enlarged, the friction arm is also raised to the maximum as much as possible, thereby facilitating the start of the gear train; the movement of the clutch lever assembly of the present invention relative to the cone wheel is different from that of the fixture in the traditional vertical clutch device, except for the radial movement In addition, there is also a tangential movement, so that a tangential force is generated on the cone wheel at the end of the clamp opening movement, forming a movement trend that is beneficial to the start of the gear train; the invention has simple structure, reliable operation, good manufacturability, and avoids The problem of function loss or instability caused by the aging of the used organic matter is solved. At the same time, the clutch lever assembly provides starting friction for the wheel train, reducing the impact on travel time.

It is worth pointing out that the scope of the present invention is not limited to the above-mentioned specific examples. According to the basic technical concept of the present invention, it is also possible to drive with basically the same structure, adjust the layout of the structure, and still achieve the purpose of the present invention. Only the implementations that can be conceived by those of ordinary skill in the art without creative effort all belong to the protection scope of the present invention.

Claims (6)

1. the vertical clutch structure of a kind of wrist-watch, it is characterised in that including clutch lever component（10）, center wheel assembly（20） With clutch lever spring（30）；The lever assembly（10）And center wheel assembly（20）It is fixed in the middle of two laminated planks simultaneously, institute State lever assembly（10）Can swing under external force, the clutch lever spring（30）With clutch lever component（10）All the time connect Touch.

2. the vertical clutch structure of wrist-watch according to claim 1, it is characterised in that the clutch lever component（10）Bag Include the long lever that riveted is integrated（11）With short lever part（12）, the clutch lever component after riveted（10）Can be neatly complete Into contraction and diastole campaign；

The center wheel assembly（20）Including center second part（21）, second teeth portion part（22）, spring（23）, back-up ring（24）；It is described Second teeth portion part（22）With center second part（21）Coaxially, second teeth portion part（22）Can be in center second part（21）Upper slip；It is described Spring（23）And back-up ring（24）Control second teeth portion part（22）With center second part（21）Relative position.

3. the vertical clutch structure of wrist-watch according to claim 2, it is characterised in that the short lever part（12）Including The short lever that pressing is integrated（12a）And lever shaft（12b）；Clutch lever component（10）By two lever shafts（12b）Place In on strap, clutch lever component（10）The synchronous hunting of certain amplitude, and flexible swinging can be done according to connection-rod linkage；

The center second part（21）Including pressing to center second axle（21a）One clutch spring of entirety of upper formation（21b）And the second Peach pad（21c）；The second teeth portion part（22）Including the incorporated second pinion of riveting（22a）, second gear sheet（22b）, second tooth Axial cone wheel（22c）With by second gear sheet（22b）With second pinion cone pulley（22c）The second tooth position nail for connecting as one（22d）；It is described from Close spring（21b）It is placed in second pinion cone pulley（22c）It is interior.

4. the vertical clutch structure of wrist-watch according to claim 3, it is characterised in that during structural priming, the lever group Part（10）In clutch lever spring（30）In the presence of diastole, and the inactive state for keeing relative stability；The center wheel assembly （20）Rotated together with other gears in train.

5. the vertical clutch structure of wrist-watch according to claim 4, it is characterised in that the long lever（11）With second pinion Cone pulley（22c）Depart from, the clutch spring（21b）Outside working end（21b’ ）With second pinion cone pulley（22c）Inner side（22c’ ） CONTACT WITH FRICTION, center wheel assembly（20）Being capable of the synchronous normal operation in train.

6. the vertical clutch structure of wrist-watch according to claim 3, it is characterised in that lever assembly（10）In contraction-like During state, the long lever（11）With second pinion cone pulley（22c）Contact and push second pinion cone pulley（22c）, second teeth portion part（22）Edge Second pinion（22a）Axle is moved down, the clutch spring（21b）Outside working end（21b’ ）With second pinion cone pulley（22c）It is interior Side（22c’ ）Depart from.