JPS598793B2 - Clock switching mechanism - Google Patents

Description

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

Conventionally, a switching mechanism of a watch has a structure as shown in FIG.

In the case of quartz watches, as electronic components have become smaller and thinner in recent years, it has become possible to construct thinner movements, and dressier watches have become possible.

However, simply making the movement thinner does not reduce the apparent thickness very much when it is installed in a case and the winding stem position of the cross section is on the back cover side.

To this end, the winding stem has been moved as close as possible to the dial side, but in the switching mechanism shown in Figure 1, if the hour wheel and the hour wheel 3 are made smaller and thinner, flat vibration of the wheel occurs due to processing. ,
Furthermore, the winding wheel 4 has limitations such as requiring a certain diameter in order to engage with the small iron wheel 5, which is a disadvantage in that the winding stem position must be moved toward the dial side.

The present invention solves the above-mentioned drawbacks by arranging the constituent members of the switching mechanism on the back cover side of the main plate and operating the correcting wheel, which is a constituent member, in a direction perpendicular to the winding stem, thereby changing the cross-sectional position of the winding stem. This provides a switching mechanism that is moved as close to the dial side as possible.

Next, examples of the present invention will be described.

First, to explain the structure, FIG. 2 is a plan view according to the present invention, in which reference numeral 11 is a winding stem and a main plate 12 is inserted.

The position of the winding stem 11 is determined by a winding stem pushing spring 13.

Reference numeral 14 denotes a pressing member that engages with the winding stem 11, has a correction wheel 15 that engages with the first correction transmission wheel 16, and operates in a direction perpendicular to the winding stem by the operation of the winding stem, which will be described later. be able to.

Reference numeral 17 denotes a second modified transmission wheel that engages with the Hinoura wheel 18 and is coaxial with the first modified transmission wheel.

14a and 14b are screws that fix the pressing member 14.

Next, to explain the cross-sectional structure in FIG. 3, the winding stem 11 has a convex part 11a that determines the winding stem position, a 1 lb. 11c1 A pinion 11d that engages with the correction wheel 15 is formed, respectively.

15.2 is a pin for fixing the correction wheel 15 to the pressing member 14.

Next, the operation will be explained.

FIG. 3 shows a state in which the hands are moving normally, and the winding stem 11 is positioned by the winding stem pushing spring 13.

The Hinoura wheel 18 rotates the second correction transmission car 17, the first correction transmission car 16, and further the correction wheel 15.

In this state, even if the winding stem is rotated, the force of the winding stem has no effect on the vehicles 15, 16, 17.

Next, as shown in Fig. 4, when the winding stem is pulled out, the winding stem presses the spring 1.
3 is bent as shown in Fig. 2, 13a, and the winding stem can be pulled out.

Further, the bent portion 14c of the pressing member 14 is moved to 11c by the 1lb of the winding stem 11 when the winding stem is pulled out, and the pinion 11d is also moved at the same time. , comes to engage with the pinion 11d of the winding stem.

When the winding stem 11 is rotated in this state, the rotational force of the winding stem is transmitted to the pinion 11d1 correction wheel 15, the first correction transmission wheel 16, the second correction transmission wheel 17, and the hour wheel 18, and the time is adjusted. enable.

After the time adjustment is completed, press the winding stem 11, and the adjustment wheel 15
is moved again by the winding stem, resulting in the state shown in Fig. 3.

As described above, according to the present invention, the constituent members of the switching mechanism are arranged on the back cover side of the main plate, and the intermediate wheel is provided to transmit the force from the back cover side of the main plate to the Hi-no-ura wheel. A switching mechanism that brings the winding stem position closer to the dial side is possible regardless of the thickness of the reverse wheel and hour wheel, and the diameter of the dial wheel. The slope of the pig can be made large, the apparent thickness of the composite can be reduced, and design restrictions are reduced.

In addition, when making a watch with a display mechanism such as a calendar thinner, the calendar components are all placed below the dial, so in the conventional switching mechanism, the relative position of the winding stem relative to the thickness of the movement is on the back cover side. Therefore, the degree of freedom in design has been restricted, but this can be overcome by using the present invention, and has many effects.

[Brief explanation of drawings]

FIG. 1 shows a cross-sectional view of a conventional switching mechanism. Fig. 2 is a plan view of the switching mechanism according to the present invention, Fig. 3 shows the winding stem position in normal hand movement state and the meshing state of the vehicle, and Fig. 4 shows the state of engagement of the winding stem during time adjustment. This shows the position of the winding stem and the engagement state of the vehicle. 11... Winding stem, 11a... Convex portion, 11
c...Groove part, 11d...Kinus part, 14
・・・・・・Osho wood, 15 ・・・Repair car, 16
... 1st revised transmission car, 17... 2nd revised transmission car.

Claims (1)

[Claims] 1. In a watch that has a winding stem that has multiple grooves for positioning and a pinion part that rotates the gear train, one end is fixed to the main plate with a screw, and a part has a bent part that engages with the groove of the winding stem. A presser member that elastically operates in a direction perpendicular to the movement of the winding stem through this bent portion is pivotally attached to the presser member and engages directly or indirectly with the hinoura wheel, depending on the drawer position of the winder stem. Consisting of a correction wheel that engages with the pinion part of the winding stem, and an intermediate wheel provided between the correction wheel and the Hinokura wheel,
These are arranged on the back cover side of the main plate, and when the winding stem is pulled out to a specific position, the correction wheel operates in a direction perpendicular to the winding stem in conjunction with the holding member, and engages the winding stem pinion. A time switching mechanism characterized by adjusting the time.