JP2574477Y2 - Clock switching structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece switching structure.

[0002]

2. Description of the Related Art In a conventional timepiece switching structure, as shown in FIGS. 4, 5 and 6, a main plate opening 2a of a main plate 2 is provided.
And a latch tip 3a of a latch 1 that is engaged with the latch wheel recess 3b of the latch wheel 3 and is guided and supported by a guide pin (not shown) of the main plate 2.
There is known a switching structure of a timepiece including a continuous speed determining member 4 disposed with a gap A in a cross-sectional direction between the latch tip portion 1a and a holding member 5 disposed in a cross-section above the member. Had been.

[0003]

However, in the conventional timepiece switching structure, as shown in FIG. 6, a wheel wheel 3 which is guided and arranged in a base plate opening 2a provided in the base plate 2 is provided.
When the winding stem 6 is incorporated in the direction indicated by the arrow, the tip of the winding stem 6 hits the slope wheel portion 3a of the continuous wheel 3 in the cross-sectional direction, so that the continuous wheel 3 fluctuates. The engagement amount of the cross section between the third stop wheel concave portion 3b and the latch tip portion 1a cannot be ensured. In addition, since there is a gap A between the gripper tip determining portion 4 and the gripper degree determining member 4 for suppressing the amount of movement of the latch tip portion 1a in the cross-sectional direction, the gripper wheel 3 fluctuates. The latch 1 engaged with the wheel also fluctuates and the pinwheel recess 3 of the pinwheel 3
Since the amount of cross-sectional engagement with b cannot be secured and the latch 1 is easily detached from the pinwheel 3, there is a problem that assembly becomes difficult.

[0004]

Means for Solving the Problems In order to solve the above problems, the present invention employs the following configuration. As shown in FIG. 2, the continuous vehicle degree determining member 4 is provided with a continuous vehicle degree determining member opening 4 a, and the pressing member 5 penetrates through the continuous vehicle degree determining member opening 4 a and is near the bolt tip 1 a. Presser member protruding portion 5 protruding from vehicle degree determining member 4
a was provided.

[0005]

In the switching mechanism of the timepiece constructed as described above, when the winding stem is assembled into the continuous wheel, as shown in FIGS. 1 and 2, the end of the winding stem 6 hits the continuous wheel slope 3a. In this case, the gap between the latch tip 1a and the holding member projecting portion 5a is also changed to the latch tip 1a shown in FIG.
Since the gap A between the pinion determining member 4 and the gap 4 decreases to B shown in FIG. 2, the moving amount of the latch 1 decreases, and the cross-sectional engagement amount between the latching wheel 3 and the latch 1 is secured. By being increased, the latch 1 does not come off from the continuous wheel 3 and the assemblability can be improved.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, the main plate 2 is provided with a main plate opening 2a, and the pinwheel 3 is guided and arranged at the main plate opening 2a. The latch 1 is guided and supported by a guide pin (not shown) of the main plate 2, and a latch tip 1 a projecting beyond the maximum diameter of the latch wheel 3 is arranged in engagement with a concave portion of the latch wheel 3. A squeeze degree determining member 4 that is guided and supported by a guide pin (not shown) of the main plate 2 and is disposed with a gap between the squeeze wheel in the cross-sectional direction, is located near the upper part of the latch tip 1a of the latch 1. An opening 4a for determining the degree of continuity is provided. The holding member 5, which is guided by a guide pin (not shown) of the main plate 2 and is disposed so as to overlap the upper portion of the stiffness determining member 4 in cross section, has a stub provided on the stiffness determining member 4. Vehicle degree determining member opening 4a
, And a pressing member 5a protruding from the consequent vehicle speed determining member 4 is provided with a gap that is B with the latch tip portion 1a. Thus, when the winding stem 6 is incorporated into the pinwheel 3, even when the tip of the pinwheel 6 hits the ramp part 3a of the pinwheel, the bolt tip 1a and the pressing member protrusion 5 are provided.
The gap with A shown in FIG.
Therefore, the amount of movement of the latch 1 in the cross-sectional direction is reduced, and the latch 1 is less likely to be detached from the latch wheel 3 by securing the cross-sectional engagement amount between the latch wheel 3 and the latch 1. . At this time, as shown in FIGS. 1 and 3, the shape of the pressing member projecting portion 5a can be arbitrarily effective.

[0007]

[Effect of the Invention] The present invention relates to a watch switching structure,
By providing a protruding portion from the holding member through the gripping member at the upper end of the latch to prevent the detachment of the latch and the latch from occurring when the conventional winding stem is incorporated, the assembling process can be prevented. In addition, the provision of the protruding portion on the holding member has the effects of reducing the number of parts, reducing the manufacturing cost, and improving the productivity of the timepiece.

[Brief description of the drawings]

FIG. 1 is a plan view of a switching structure of a timepiece according to the present invention.

FIG. 2 is a sectional view of the timepiece switching structure according to the present invention.

FIG. 3 is a plan view of a timepiece switching structure showing another embodiment according to the present invention.

FIG. 4 is a plan view of a conventional watch switching structure.

FIG. 5 is a front sectional view of a conventional timepiece switching structure.

FIG. 6 is a side sectional view of a conventional watch switching structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Latch 1a Lever tip 2 Main plate 2a Opening of main plate 3 Slip wheel 3a Slip wheel slope 3b Slip wheel concave portion 4 Squeeze degree determining member 4a Squeeze degree determining member opening 5 Pressing member 5a Pressing member protruding Part 6 Makoto Makoto

Claims (1)

(57) [Scope of request for utility model registration] 1. A base plate serving as a base of a timepiece, a winding stem supported by a lateral hole of the base plate, a catch wheel guided by the base plate and engaged with a corner of the winding stem to slide. a yoke which recess engages the of the clutch wheel, drum of the clutch wheel of the winding stem is regulating the amount of movement of the cross-sectional direction of the clutch wheel during non-wearing
In the switching structure of a timepiece having a vehicle speed determining member and a holding member for pressing the continuous vehicle speed determining member, the tip of the latch is located inside the maximum diameter of the continuous wheel in a cross-sectional direction, and the planar direction is The pusher has a tip protruding from the outer diameter of the pinwheel, and the pressing member penetrates an opening provided in the pinch-degree determining member and protrudes near the tip of the latch. A switching structure for a timepiece, comprising: