JP3259727B2 - 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 external-operating-member loading and unloading member is provided with a rotation center shaft which is extended to the center from the circumference of a machine body, it is turned around the center shaft and the external operating member is loaded and unloaded. SOLUTION: A movement-amount regulation member (a mandarin duck) is coupled to an external operating member (a core) so as to regulate its axial-direction movement amount. A casing member comprises a through hole through which the external operating member is passed, and a machine body is cased. An external-operating-member loading and unloading member (a mandarin-duck lever) releases the coupling of the movement-amount regulation member to the external operating member, and the external operating member can be loaded onto, and unloaded from, the machine body. The external-operating-member loading and unloading member is provided with a rotation center shaft which is extended to the center direction from the circumference of the machine body. When it is turned around the center shaft, the external operating member can be loaded onto, and unloaded from, the machine body, In addition, the external-operating-member loading and unloading member is provided with a contact part which comes into contact with the casing member.

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 the shim, the shim tilts, disengaging from the winding stem, and the 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 back side outer periphery is squeezed thinly, and it looks thin, but there is a restriction in 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]

A timepiece according to the present invention has 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 wherein the external operation member penetrates. A casing member having a possible through-hole and casing the machine body; 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 the machine body. Wherein the external operating member attaching / detaching member has a fulcrum portion engaged with a part of the casing member, and a rotation center axis extending from the fulcrum portion toward the center of the machine body. The member detachable member rotates around the rotation center axis to move the movement amount regulating member, thereby enabling the external operation member to be disengaged from the machine body. Work member desorption member is comprising the abutment portion abutting on the casing member. The timepiece of the present invention is a machine having at least an external operation member, a movement amount regulating member that 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. Casing member for casing the body, disengagement of the movement control member and the external operation member,
In a timepiece having an external operation member detachable member that enables detachment of the external operation member from a machine body, the external operation member detachable member includes a fulcrum that engages a part of the casing member, and a fulcrum from the fulcrum. A rotating center axis extending in the direction of the center of the machine body, wherein the external operation member detaching member is rotated about the rotating center axis to move the movement amount regulating member, and The external operation member can be disengaged, and the external operation member detachable member can be operated between the rotation center axis and the external operation member to operate the external operation member detachable member. Is provided. Further, at least an external operation member, a movement amount regulating member that engages with the external operation member and regulates an axial movement amount of the external operation member, and a casing member that has a through hole through which the external operation member can penetrate and that casings a machine body. In a timepiece having an external operation member detachable member that disengages the movement amount regulating member and the external operation member and allows the external operation member to be detached from a machine body, the external operation member detachable member includes: A fulcrum that engages with a part of the casing member, and a rotation center axis extending from the fulcrum toward the center of the machine body, wherein the external operation member detachable member rotates about the rotation center axis. By moving the movement amount regulating member, it is possible to disengage the external operation member from the machine body, and further,
The fulcrum and the casing member are arranged so as to overlap in a plane. Further, the timepiece according to the present invention is characterized in that the timepiece includes an abutting portion in which the external operating member detachable member comes into contact with the casing member when the external operating member detachable member is pressed down. Further, in the timepiece of the present invention, the external operation member attaching / detaching member is provided with an operation unit for operating the external operation member attaching / detaching member between the rotation center axis and the external operation member. Features.

[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 planarly from the outer shape of the dial 6, and a bent portion 4 b and an operating portion 4 a provided with a depression or a hole so as to easily press the portion with tweezers or the like are arranged at the protruding portion. 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, it is possible to operate if the shape is close to the pushing shaft 5, 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 is provided on the outer case.

[0006]

According to the present invention, a fulcrum for operating the detachable member of the external operating member is provided on the casing member, and has a rotation center axis extending from the fulcrum toward the center of the machine body. Therefore, the movement stroke of the movement amount regulating member required for removing the external operation member from the machine body can be reduced,
A thin watch can be realized. In particular, according to the first aspect of the present invention, since the external operation member attaching / detaching member is provided with the contact portion that abuts on the casing member, the destruction or deformation of the timepiece component due to excessive pushing of the external operating member attaching / detaching member is prevented. Never wake up. According to the second aspect of the present invention, since the external operating member attaching / detaching member is provided with the operating portion for operating the external operating member attaching / detaching member between the rotation center axis and the external operating member. In addition, the planar space required for the removal operation can be reduced. Furthermore, according to claim 3 of the present invention, since the fulcrum and the casing member when the external operating member detachable member operates are overlapped in a plane, the planar space required for the arrangement is reduced,
It is easy to adopt for small watches. 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 cross-sectional view of a conventional timepiece.

[Explanation of symbols]

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

Claims (5)

(57) [Claims] 1. A casing 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. A timepiece having a casing member, 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. The member has a fulcrum that engages with a part of the casing member, and a rotation center axis extending from the fulcrum toward the center of the machine body. The external operation member detachable member has the rotation center axis. By pivoting about the center, the movement amount regulating member can be moved to disengage the external operation member from the machine body. Timepiece characterized by comprising contacting an abutment on the grayed member. 2. 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. A timepiece having a casing member, 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. The member has a fulcrum that engages with a part of the casing member, and a rotation center axis extending from the fulcrum toward the center of the machine body. The external operation member detachable member has the rotation center axis. By pivoting about the center, the movement amount regulating member can be moved to disengage the external operating member from the machine body. Central axis and between the external operating member, timepiece characterized by comprising an operation unit for operating the external operating member desorption member. 3. A casing 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. A timepiece having a casing member, 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. The member has a fulcrum that engages with a part of the casing member, and a rotation center axis extending from the fulcrum toward the center of the machine body. The external operation member detachable member has the rotation center axis. By pivoting about the center, the movement amount regulating member can be moved to disengage the external operating member from the machine body. Further, the fulcrum and the casing member are flat. Watch, characterized in that arranged overlapping. 4. The timepiece according to claim 3, wherein the external operation member attaching / detaching member is provided with a contact portion that contacts the casing member when the external operating member attaching / detaching member is pressed down. 5. The external operating member attaching / detaching member according to claim 3, further comprising an operating unit for operating the external operating member attaching / detaching member between the rotation center axis and the external operating member. A clock characterized by the following.