JPS585686A - Switching mechanism for timepiece - Google Patents

Abstract

PURPOSE:To reduce the number of components and thereby obtain a compact mechanism by constituting a spring member provided at a yoke in such a manner that it acts on both the yoke and a train wheel setting lever. CONSTITUTION:The arm part 16a of a train wheel setting lever 16 setting a yoke 17 and a wheel 24 is engaged with a setting lever 13, while the spring member 17a of the yoke 17 is engaged with the train wheel setting lever 16. While hands are operated, said components take positions shown by solid lines in the figure and a sliding pinion 18 is not engaged with a setting wheel 19. When a winding stem 12 is pulled out for correcting a time, the setting lever 13 takes a position shown by an alternate long and two short dashes line and the sliding pinion 18 is engaged with the setting wheel 19. Simultaneously, the spring force of the yoke 17 acts to rotate the train wheel setting lever 16 to a position 16', whereby the wheel 24 is set. The spring member 16a stops the motor of a crystal time piece through the intermediary of a reset pin 30 and thus the correction of a time is conducted. Therefore, a compact mechanism with less number of components can be obtained.

Description

[Detailed description of the invention] The present invention relates to a switching mechanism for a quartz watch.

In the structure of a conventional thin crystal watch, a lever 1, a bolt 2, a bolt spring 5, and a regulating lever 4 are arranged in a plane as shown in FIG. electronic technology.

With the development of processing technology and the thinning of fluorine crystals, thinner crystal watches have become possible. If you want to make it even thinner,
A thinner battery is used, but the thinner the battery, the larger the diameter to ensure a constant capacity tube. Therefore, it is necessary to miniaturize each mechanism in the movement and to create a layout that does not overlap on a plane. The structure shown in FIG. 1 has the drawback that the planar space is large, and even if it is made thinner, it cannot be made into a compact VC in a planar manner, reducing the degree of freedom in design.

In the present invention, the spring part provided on the bolt rotates the bolt in a certain direction and at the same time rotates the regulation lever in a certain direction, thereby reducing the number of parts, reducing the cost, and reducing the cross-sectional thickness. The purpose of this project is to eliminate the above-mentioned drawbacks by making the VC thinner and at the same time making the mechanism more compact in terms of the VC plane, reducing the movement size and allowing a greater degree of freedom in design.

Next, examples of the present invention will be described. FIG. 2 shows the planar structure of the switching mechanism according to the invention.

11Fi main plate, and is provided with a horizontal y<11 a that engages with the main plate 11rC winding stem 12. The winding stem 12 has an oshidori 15 whose rotation center is a bin 11b provided on the main plate 11, an oshidori 15F (: provided on the bin 15&), and an oshidori 15F (on which is provided), and the bins 11a and 11 (IK) provided on the main plate 11. It is guided and fixed with a screw 14.The position is determined by the concave and convex portion 15thK of the bolt presser foot 15.The above-mentioned pusher 15rcFi and the regulating lever 16 are normally set at V.
C24t-The bolt 17 applying rotational force in the regulating direction and the arm portion 16a of the regulating lever are engaged. Number 18 is a rolling wheel whose position is determined by the number 9 and the number 17. 19 is when turning the hand r (then, the hand wheel 1
It is a small railway car that matches B.

Next, the cross-sectional structure will be explained. The fifth prisoner is Oshidori 1
3. It shows the cross-sectional structure of the winding stem 12, thread, IKlB, small iron wheel 19, and needle drive wheel train not shown in FIG.

FIG. 3 shows the structure of the lead wheel 1 and wheel train in the state where the hands are moving. 20 ke Tetsu Denkogun, 21 hi Uragura, 22 Tsutsuguruma, 2
3 minutes by car. 25 is Kotetsusha, 19 and Kotetsu Denkogun 20
The gear train holder that determines the progress of the race.

Fig. 4 1 shows how the cross sections of the lock 15, the regulating lever 16, and the bolt 17 are aligned. There is a bend in the edges, and they overlap and engage in cross section. On the other hand, the spring portion tip 17a of the bolt 17 is engaged with the regulating lever 16 as shown in FIG. 11d is a stepped bottle, the one with the larger diameter i1 is the regulating lever, and the one with the smaller diameter is the bar presser 1.
I am giving guidance on 5.

Figure 5 shows the bottle 1, which is the center of rotation of the bolt 17.
1c and the cross-sectional engagement state of the bar screw. Bin 11CII'i Same as the pin 11ct, the larger diameter is the center of rotation, and the smaller diameter is used to guide the bar presser.

FIG. 6 shows a cross section taken along line A-A' in FIG.

16), i', and 1lt24. 25 wheel train bridge, 22 is hour wheel, 25! It is a d minute car.

Next, the operating VC will be explained with reference to FIG. The bolt 17 acts to engage the spring portion 17aV (the lock 13), and at the same time acts to rotate the regulating lever 16 in the direction of the wheel 24.However, the regulating lever 1
One of the arm portions 16a of the number 6 is fixed in position by the bar holder 15 shown in FIG. However, since the regulation lever 16Fi cannot be rotated, it is in the state Kfk shown by the solid line. Kannuki 17ij
, Tsuzumi J [18 is Kotetsu Jli19] which is engaged with the tip of the bolt because the force is acting in the direction of Oshidori 13.
It never meshes with me.

Next, when the time is to be adjusted, the winding stem 12 is pulled out and the dial 13 is placed at the position &17' indicated by the two-dot chain line. That fc, Tsuzumi car 18 is also 18') #VC, small iron car 1
It meshes with 9. On the other hand, while the regulating lever 14ij is being positioned, the lever 15 rotates to the position VC of 13' and becomes free. Then, the spring force of the bolt moves and rotates the regulating lever 16 times, j2, 16 times as shown by the two-dot chain line.
' position and adjust the wheel 24. This is a reset bin that is a component of the circuit block of a 50q crystal clock. The reset bin 50 and the spring portion 16'b of the regulating lever constitute a switch for stopping the motor of the crystal watch. The regulation lever 16 is operated with a slight time difference so that the reset switch is turned on, and then the regulation lever 16 regulates the lever 24. To prevent the forces from being balanced, the spring installed on the mechanical lever 2 has a greater spring force than the spring on the reset switch installed on the regulation lever.

As described above, according to the present invention, since the spring portion provided on the bolt acts on both the bolt and the regulating lever, the number of parts can be reduced and a compact switching mechanism can be achieved.

When the winding stem is pulled out and in the normal position, the spring part of the bolt applies a larger force to the control lever, making it possible to provide sufficient force for adjusting the wheel train. The bolt spring is heat treated W#
In addition, the position of the tail of the spring fluctuates and the spring force tends to change.

In the present invention, since the position of the spring acting on the regulation lever is at the center of rotation with respect to the wheel train regulation part, it becomes a mechanism trap that reduces the variation in regulation force even if the spring force changes, resulting in stable regulation. It can output power. This prevents large pressure from being applied to the car, causing damage to the car or causing insufficient control force.

As described above, the effects of the present invention are extremely large.

[Brief explanation of the drawing]

#iI, FIG. 1 shows a conventional example, and FIG. 2 shows an embodiment of the present invention. The top views of the switching mechanism are shown in Figures 5, 4, and 5.
6 and 6 are cross-sectional views showing the cross-sectional structure of each part of FIG. 2, and FIG. 7 is an enlarged plan view showing the operation of the switching mechanism. 12... Volume stem, 15... Oshidori, 16.
...Regulation lever, 17...Kanuki, above Applicant Daini Seikosha Co., Ltd. Agent Patent attorney Mogami

Claims (1)

[Claims] It consists of a shim that is rotated by a winding stem, a regulation lever that is operated by the shim to regulate the wheel train, and a gankei K that has a spring part that constantly applies force to the regulation lever rC and that engages with the shim. A clock switching mechanism characterized by: