JPH07270547A - Outer operating member detaching structure for watch - Google Patents

Abstract

PURPOSE:To detach a winding core surely by a structure wherein a movement regulating member and an outer operating member are disengaged and operated around a fulcrum, i.e., a part of the casing of member for mounting/demounting the outer operating member on/from the machine body. CONSTITUTION:A lever 4 of an outer operating member mounting/demounting member is set, while being sandwiched by a mandarin duck-shaped part 2 and a base plate 3, in a recess defined by the protrusions 3a, 3b in the thickness direction of the base plate 3. When the lever 4 is set at the time of assembling a movement, the lever 4 inclines due to unbalance of the center of gravity and begins to be removed from the base plate 3. But a thick part is hooked to the protrusions 3a, 3b and the set state is sustained thus enhancing the assembling performance. When the operating part 4a of the lever 4 is depressed, the lever 4 moves downward and a bent part 4b abuts on the step part of the case. When it is depressed further, the lever inclines about a reference line 8 and thereby the part 2 inclines to be disengaged from a core 1. When it is depressed furthermore, the step part 7c of the case abuts on the vicinity of the operating part 4a to block the depression thus protecting a component against fracture or deformation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for removing a winding stem from a timepiece movement.

[0002]

2. Description of the Related Art When removing the movement of a timepiece from the outer case or setting it in the outer case, it is necessary to remove the winding stem, which is an external operation member, from the movement. Generally, from the back lid side of the movement, you can press a part of a well-known rod that engages with the winding stem, and by pushing it, the rod tilts and the engagement with the winding stem disengages. Many structures are used that can remove the true. This is the case where the movement is inserted from the case back side, but unlike this, there is also the one-piece case where there is no case back and the movement can be entered from the dial side. The present invention relates to a structure for removing the winding true of this one-piece case, and a conventional example will be described below.

FIG. 4 is a partial plan view of a conventional example, and FIG. 5 is a sectional view thereof. 1 is a winding stem which is an external operation member,
2 is a lever that engages with the groove portion of the winding stem 1 and regulates the axial position of the winding stem. The winding stem 1 has a plurality of positions in the axial direction, and calendar correction and needle alignment can be performed corresponding to the positions. The position of the shidori is regulated by a known click member such as a presser foot so that the axial position of the winding stem is regulated. Reference numeral 3 is a main plate which is a base of the movement, 4 is a lever lever which is a winding stem removing member, 5 is a lever shaft which is a rotation center of the lever 4, 6 is a dial plate, and 7 is an outer case. Since the outer case 7 has a one-piece structure, the back case is integrally formed. Therefore, in order to insert the movement into the exterior case 7, it is necessary to insert it from the dial side, that is, from the upper side of FIG. Since the winding stem 1 is inserted into the through hole 7a provided in the outer case 7, the outer case 7
In order to move the movement in and out of the movement, it is necessary to remove the winding stem 1 from the movement. The outer case 7 has a stepped portion 7b that receives the machine drop portion of the main plate 3 over substantially the entire circumference thereof and holds the movement, and a stepped portion 7c that allows the lever 4 to escape. Further, although not shown in the figure, the outer case 7 is composed of glass and a glass edge for fixing it, and by removing the glass edge,
The movement can be taken in and out.

Next, the operation of removing the winding true will be described.
When the glass rim is removed from the outer case, the thumb lever 4 protruding in a plane from the dial 6 can be seen. The thumb lever 4 is provided with a recess or a hole 4a so that it can be easily pushed by tweezers or the like. When the operator pushes that portion, the lever 4 tilts with the tip 4b serving as a fulcrum. The inclined state is 4 ', and the bending position at that time is 2', the engagement with the winding stem 1 is released, and the winding stem can be removed from the movement. Excessive pushing of the lever 4 is prevented by the step 7c of the outer case 7.

[0005]

However, the conventional example has the following problems.

Since the thumb lever is pushed from the dial side, it is necessary to project from the dial outer shape. Therefore,
When the outer shape of the dial is large, it is necessary to extend the lever lever correspondingly. An example of this case is shown in FIG. As can be seen from FIG. 6, when the winding stem is removed, the outer end of the thumb lever moves greatly depending on the lever ratio, and it is necessary to increase the baffle of the outer case correspondingly. Originally, the characteristic of the one-piece case is that there is no back lid, so that the dial is made large and the outer circumference of the back side is squeezed to make it look thin, but in the conventional example structure there is a restriction to thin the outer circumference, It has the drawback of not being able to take advantage of its features. Similarly, it is also difficult to remove the winding true of the movement arrangement in which the lever is located inside the movement.
Also, as can be seen from Fig. 4, it is necessary to extend the tip to the inside of the movement as much as possible in order to improve the lever ratio when removing the winding stem. There are well-known bolts and other items that determine the number of items, and it is possible to extend the amount to a small extent.

The present invention solves the problems as described above, and even if the temple is relatively inside the outer shape of the dial, it is possible to reliably remove the winding true in a small space.

[0008]

SUMMARY OF THE INVENTION An external operating member removing structure for a timepiece according to the present invention is at least an external operating member, and a movement amount regulating member which engages with the external operating member and regulates an axial movement amount of the external operating member. A casing member that has a through hole through which the external operation member can penetrate and casing a machine body, and disengages the movement amount restricting member and the external operation member,
In a timepiece having an external operation member attaching / detaching member that enables the external operation member to be attached / detached to / from the machine body, the external operating member attaching / detaching member is configured to operate with a part of the casing member as a fulcrum.

[0009]

1 is a partial plan view of an embodiment of the present invention, and FIG. 2 is a sectional view thereof. A description will be given below with reference to the drawings.

In FIG. 1 and FIG. 2, 1 is a winding stem of an external operating member, 2 is a movement amount regulating member which regulates the axial movement amount of the winding stem 1, and 3 is a base of a timepiece body. A base plate, 4 is a lever of the external operation member attaching / detaching member, 5 is a lever shaft around which the lever 3 rotates, 6 is a dial, and 7 is an outer case.

The lever lever 4 is arranged in a recess formed by the thickness direction protrusions 3a and 3b of the base plate 3 so as to be sandwiched between the lever 2 and the base plate 3. The lever lever 4 has a larger width outside the recess of the main plate 3, so that portion hits the projecting portions 3a and 3b of the main plate,
It is positioned in a plane. Therefore, at the time of assembling the movement, if the lever lever 4 is first set, the center of gravity of the lever lever 4 tilts due to the imbalance and tries to come off from the main plate 3, but the thickened portion is caught by the main plate projecting portions 3a and 3b, Since the set state is maintained,
It is also easy to assemble. By placing the lever 2 on top of this, the lever lever is further stabilized in the set state.

The lever lever 4 protrudes in a plane from the outer shape of the dial plate 6, and the bent portion 4b is formed in the protruding portion.
The operation portion 4a is provided with a recess or a hole so that the portion can be easily pushed with tweezers or the like. The exterior case 7 is provided with a lever lever bending portion 4b and a step portion 7c that escapes with a slight clearance.

Next, the operation and operation of removing the winding stem will be described. When the operating portion 4a of the lever lever 4 is pushed from the dial side by tweezers or the like, the lever lever 4 is lowered due to backlash and spring property, and the bent portion 4d hits the outer case step portion 7c. When it is pressed further, it starts to tilt with the reference line 8 as the fulcrum. Along with that, the lever 2 also tilts, and the engagement with the winding stem 1 is released. When it is pushed harder, the shape of the lever lever 4 near the operation portion 4a hits the stepped portion 7c of the outer case 7 and cannot be pushed any further. Therefore, there is no risk of damage or deformation of parts due to excessive pushing. Also, the lever lever 4
Is pushed down in the disengaging direction on the engaging side of the rod 2 with the winding stem 1, and is hardly pushed down on the side opposite to the rod shaft 5. Therefore, there is an advantage that it is difficult to cause the well-known bolt and disengagement with the clamp foot.
Regarding the space, the conventional example
Although it was necessary to extend the lever lever to the center side of the movement considerably, according to the present invention, it is possible to operate as long as there is a shape near the lever shaft 5, and it is possible to lay out in a space that is largely smaller than the conventional one. is there.

The lever lever can be formed of a plate member having a substantially flat end, and can be easily processed. The tilting amount of the lever lever is almost determined by the bending amount, so that the variation can be suppressed. Regarding the balance of the force applied to remove the winding stem, since the operating portion 4a located at the intermediate portion between the winding stem 1 and the bent portion 4d of the lever 4 is pushed down, the movement does not rattle and the work becomes easy.

Further, even if the dial size becomes large and the distance from the dial outer shape to the thumb is long and the thumb lever becomes long, it is used in such a way that the tilt lever of the thumb lever is hardly affected. Like the conventional example,
The amount of actuation of the lever does not increase. Therefore, Gesari on the rear lever of the outer case is not affected by the size of the dial, and the outer circumference of the back cover can be thinly finished. FIG. 3 shows another embodiment in which the operation of the lever is different from that of the above embodiment. In the above-mentioned embodiment, the winding stem is removed by inclining the lever, but in this embodiment, like the conventional example, the lever is pushed down by the lever ratio. In this case as well, since the outer case is used as the fulcrum, the actuation amount of the lever can be small even if the dial size increases. Further, the shape of the lever lever can be simplified without bending. However, in this case, it is preferable to provide another stopper that is pushed too much.

The shape of the lever lever in the above embodiment is not limited to these, and any shape can be realized as long as the lever lever fulcrum for removing the winding stem is provided on the outer case.

[0017]

According to the present invention, since the fulcrum when the lever is operated is provided on the outer case, even if the dial size is changed and the lever is long, the winding true is removed. Requires less working stroke,
It is possible to realize a thin one-piece watch with a thin outer circumference on the back side of the outer case.

Further, the space required for the arrangement is smaller than that of the conventional one, and it is easy to adopt for a small timepiece. Moreover, since the shape is simple that can be formed by a plate member, it is low cost and
It is easy to handle.

In the embodiment, the one-piece exterior is taken as an example, but it can be applied to a type in which the winding stem removing operation is performed from the dial.

Further, although the winding stem has been described as an example of the external operation member, it can be applied to a device other than the winding stem as long as it penetrates the case and is fixed by the movement.

[Brief description of drawings]

FIG. 1 is a partial plan view of a timepiece according to an embodiment of the present invention.

FIG. 2 is a sectional view of FIG.

FIG. 3 is a partial sectional view of a timepiece according to another embodiment of the present invention.

FIG. 4 is a partial plan view of a conventional timepiece.

5 is a cross-sectional view of FIG.

FIG. 6 is a partial sectional view of a conventional timepiece.

[Explanation of symbols]

 1 winding true 2 sticker 3 base plate 4 sticker lever 5 stick shaft 6 dial 7 exterior case

Claims (1)

[Claims] 1. A machine body having at least an external operating member, a movement amount regulating member which engages with the external operating member and regulates an axial movement amount of the external operating member, and a through hole through which the external operating member can penetrate. External operation member removing structure for a timepiece having a casing member for casing, an external operation member attaching / detaching member that allows the external operation member to be detached from the machine body by disengaging the movement amount restricting member from the external operation member. In the above, the external operation member attaching / detaching member is configured to operate with a part of the casing member as a fulcrum.
External operation member removal structure of the watch.