JP2000187083A - Removal structure for external operating member of watch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a removal structure by which an external operating member can be removed in a small space and surely by a method wherein an operating point is pressed down, an external-operating-member loading and unloading member is turned while a part of a casing member is used as a fulcrum and the coupling of the external operating member to a movement-amount regulation member is released. SOLUTION: A mandarin-duck lever 4 (an external-operating-member loading and unloading member) protrudes from the outer shape of a dial 6. A bent part 4d and an operating part 4a are arranged in its protruding part. A step part 7c is provided at an outer case 7, and a slight gap is formed at the bent part 4d. When a core 1 (an external operating member) is removed, the operating part 4a of the mandarin-duck lever 4 is pressed from the side of the dial by using a part of tweezers or the like. Then, the mandarin-duck lever 4 is lowered due to a rattle or the elasticity of a spring, and the bent part 4d hits the step part 7c of the armor case 7. When the lever 4 is pressed further, the bent part 4d starts to tilt while the reference line of the outer case 7 is used as a fulcrum. At the same time, a mandarin duck 2 (a movement-amount regulation member) is tilted, and its coupling to the core 1 is released. When the lever 4 is pressed much more, the operating part 4a hits the step part 7c, and there is no fear that a component is destroyed and deformed when the lever 4 is pressed too much.

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 stem from a timepiece movement.

[0002]

2. Description of the Related Art When removing or setting a movement of a timepiece from an outer case, it is necessary to remove a winding stem, which is an external operation member, from the movement. In general, a part of a well-known shim that engages with the winding stem can be pressed from the back lid side of the movement, and by pushing on the part, the shim tilts, disengaging from the winding stem, and winding. Many structures are used so that the true can be removed. This is the case where the movement is inserted from the back cover side of the case. On the other hand, there is also the one-piece case where the movement is inserted from the dial side without the back cover. The present invention relates to a one-piece case unwinding structure, 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, and 2 is a bamboo that engages with the groove of the winding stem 1 to regulate the axial position of the winding stem. Makinshin 1
Has a plurality of positions in the axial direction, so that the calendar can be corrected and the hands can be adjusted in accordance with the positions. The position of the shim is regulated by a well-known click member such as a latch presser, thereby regulating the axial position of the winding stem.
Reference numeral 3 denotes a base plate serving as a base of the movement, 4 denotes a weighing lever which is a winding unwinding member, 5 denotes a weighing shaft which is a center of rotation of the weighing 4, 6 denotes a dial, and 7 denotes an outer case. Since the outer case 7 has a one-piece structure, it is integrally formed up to the back cover. Therefore, to insert the movement into the outer case 7, from the dial side,
That is, it is necessary to insert from above in FIG. Also Makimaki 1
Is inserted into the through hole 7a provided in the exterior case 7, so that the winding stem 1 needs to be removed from the movement to put the movement in and out of the exterior case 7. The outer case 7 has a stepped portion 7b that receives the machine-falling portion of the main plate 3 over almost the entire circumference and holds the movement, and a stepped portion 7c that escapes the pushing lever 4.
Although not shown in the figure, the exterior case 7 is composed of glass and a glass edge for fixing the glass, and the movement can be taken in and out by removing the glass edge. Next, the operation of unwinding the winding will be described. When the glass rim is removed from the outer case, the lever 4 that has protruded from the dial 6 in a planar manner can be seen. In order to push the lever 4 with tweezers, etc.,
A depression or hole 4a is provided. When the operator presses that portion, the pushing lever 4 tilts with the tip 4b as a fulcrum. The tilted state is 4 ', the resting 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. Rest lever 4
Is prevented by the step 7c of the outer case 7.

[0003]

However, the prior art has the following problems. Since the lever is pushed from the dial side, it is necessary to protrude from the dial outer shape. Therefore, when the dial outer shape is large, it is necessary to extend the pushing lever by that much. FIG. 6 shows an example in this case. As can be seen from FIG. 6, when the winding stem is removed, the outer end of the pushing lever is largely moved depending on the lever ratio, and it is necessary to increase the degree of baldness of the outer case. Originally, the feature of the one-piece case is that there is no back cover, the dial is made larger, the outer periphery on the back side is squeezed thinly, and it looks thin, but there is a restriction on making the outer periphery thinner with the conventional imaginary structure, It has the disadvantage of not being able to take advantage of its features. Also, due to the arrangement of the movement, it is also difficult to unwind the winding when the rest is on the inside of the movement. In addition, as can be seen from FIG. 4, in order to improve the lever ratio at the time of unwinding the winding lever, it is necessary to extend the tip to the inside of the movement as much as possible,
There is a well-known latch or the like which engages with a setting lever and determines the position of a ratchet wheel, and can be extended only a little. The present invention solves the above-described problems. Even if the torsion is relatively inside the outer shape of the dial, the unwinding can be reliably performed in a small space.

[0004]

The structure for detaching an external operation member of a timepiece according to the present invention comprises at least an external operation member and a movement amount regulating member which engages with the external operation member and regulates an axial movement amount of the external operation member. A casing member having a through hole through which the external operation member can penetrate and casing the machine body, disengagement of the movement amount regulating member and the external operation member,
In a timepiece having an external operation member detachable member capable of detaching the external operation member from the machine body, the external operation member detachable member is configured to operate around a part of the casing member as a fulcrum.

[0005]

FIG. 1 is a partial plan view of an embodiment of the present invention, and FIG. 2 is a sectional view thereof. This will be described below with reference to the drawings. 1 and 2, reference numeral 1 denotes a winding stem of an external operation member, 2 denotes a movement amount regulating member that regulates an axial movement amount of the winding stem 1, 3 denotes a main plate serving as a base of the watch body, 4. Numeral denotes a lever for detaching the external operation member, 5 denotes a pivot shaft serving as a rotation center of the lever 3, 6 denotes a dial, and 7 denotes an outer case. The pushing lever 4 is provided in the thickness direction of the base plate 3 in the thickness direction.
a, 3b in the depression created by a, 3b
It is arranged so that it may be sandwiched between. Since the weighing lever 4 has a large width outside the depression of the main plate 3, its portion hits the protrusions 3a and 3b of the main plate and is positioned in a planar manner. Therefore, when the assembling lever 4 is first set at the time of assembling the movement, the assembling lever 4 tilts due to the unbalance of the center of gravity and tends to come off the main plate 3.
Since it is caught by a and 3b and the set state is maintained, assemblability is also good. By setting the shim 2 from above, the shim lever is further stably set. The weighing lever 4 protrudes two-dimensionally from the outer shape of the dial 6, and the protruding portion is provided with a bent portion 4 b and an operation portion 4 a provided with a depression or a hole so as to easily press the portion with tweezers or the like. I have. The outer case 7 is provided with a bending lever bent portion 4b and a stepped portion 7c which escapes with a slight gap. Next, the unwinding operation and operation will be described. When the operating portion 4a of the lever 4 is pushed from the dial side with tweezers or the like, the lever 4 is lowered by looseness or resilience, and the bent portion 4d hits the outer case step 7c. When the button is further pressed, it starts to tilt with the reference line 8 as a fulcrum. Along with that, tilt 2 also,
The engagement with the winding stem 1 is released. When the pushing lever is further pressed, the shape near the operation portion 4a of the pushing lever 4 hits the step portion 7c of the outer case 7, and cannot be pushed any more. Further, the lever 4 is pushed down in the direction of releasing the engaging side of the shim 1 with the winding stem 1, and is hardly pushed down on the side opposite to the shim 5. Therefore, there is an advantage that it is difficult to cause disengagement with a well-known latch or a latch presser. As for the space, in the conventional example, it was necessary to extend the pushing lever to the movement center side considerably from the pushing shaft 5, but according to the present invention, if the shape is close to the pushing shaft 5, the operation is possible, It is possible to lay out in a space much smaller than in the past. The shape of the lever can be made of a substantially flat plate, and the processing is easy. Since the amount of tilting of the pushing lever is also substantially determined by the amount of bending, the variation can be suppressed with little variation. Regarding the balance of the force applied to the unwinding operation, the operating unit 4a located in the middle of the winding unit 1 and the bent portion 4d of the pushing lever 4 is pressed down.
The work is easy without the movement rattling.
In addition, even if the dial size becomes large, the distance from the dial outer shape to the shim is longer, and the grip lever is longer,
Since the usage is such that it hardly affects the manner in which the lever is tilted, the amount of operation of the lever is not increased as in the conventional example. Therefore,
Guesarai can be used for the lever on the outer case, regardless of the size of the dial. FIG. 3 shows another embodiment in which the operation of the pushing lever is different from that of the above-described embodiment. In the above-described embodiment, the unwinding is performed by inclining the torsion, but in this embodiment, as in the conventional example, the torsion is pushed down by the lever ratio.
Also in this case, since the outer case is used as a fulcrum, even if the dial size becomes large, the amount of actuation of the pushing lever may be small. Further, the staking lever shape can be simplified without bending. However, in this case, it is preferable to provide another stopper for over-pressing. The shape of the weighing lever in the above embodiment is not limited to these, and any shape can be realized as long as the weighing lever fulcrum that is unwound is provided on the outer case.

[0006]

According to the present invention, since the fulcrum at the time of operating the pushing lever is provided on the outer case, even if the dial size changes and the pushing lever becomes longer, the winding can be removed. The required working stroke is small,
A thin one-piece timepiece with a thin outer periphery on the back side of the outer case can be realized. In addition, the space required for the arrangement is reduced as compared with the related art, so that it can be easily adopted for a small timepiece. Moreover,
Since the shape is also a simple one that can be formed by a plate member, it is low-cost and easy to handle. In the embodiment, a one-piece exterior is used as an example. However, the present invention can be applied to a type in which the unwinding operation is performed from a dial. Further, although the winding stem has been described as an example of the external operation member, any other member than the winding stem can be applied as long as it penetrates the case and is fixed by a movement.

[Brief description of the 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.

FIG. 5 is a sectional view of FIG. 4;

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

[Explanation of symbols]

 1 Makoto Makoto 2 Oshidari 3 Main plate 4 Oshidori lever 5 Oshidori axis 6 Dial plate 7 Outer case

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[Procedure amendment]

[Submission date] March 15, 2000 (200.3.1.
5)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004]

In order to solve the above-mentioned problems, an external operation member detaching structure of a timepiece according to the present invention comprises at least an external operation member and an axial movement amount of the external operation member engaged with the external operation member. A movement amount regulating member that regulates the movement of the external operation member, a casing member having a through hole through which the external operation member can penetrate, and a casing member that casings a machine body, disengaging the movement amount regulation member and the external operation member, In the external operation member detaching structure for a timepiece having an external operation member detachable member capable of detaching from a machine body, the external operation member detachable member rotates around a part of the casing member as a fulcrum, and the external operation member Between the engagement point of the movement amount regulating member and the fulcrum on the casing member,
An operation point by a user is provided, and when the operation point is pressed down by the user, the movement amount regulating member and the external operation member are disengaged from each other.

Claims (1)

[Claims] 1. A machine body having at least an external operation member, a movement amount regulating member which engages with the external operation member and regulates an axial movement amount of the external operation member, and a through hole through which the external operation member can pass. External operation member removal structure for a timepiece having a casing member to be casing, an external operation member detachable member that disengages the movement amount regulating member from the external operation member and allows the external operation member to be detached from a machine body. In the above, it is characterized in that the external operating member detachable member is configured to operate around a part of the casing member as a fulcrum,
External operation member removal structure of watch.