JP2006010574A - Timepiece - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a timepiece capable of miniaturization in an outer peripheral direction by assembling a normal movement. <P>SOLUTION: The timepiece is provided with an external operation button 2 for pushing a winding stem outside part 9 of a setting lever 7 on the bottom part of a one-piece type external facing case. Thereby the winding stem outside part 9 of the setting lever 7 is pushed by operating the external operation button 2 from the same direction as the normal movement, and engagement of the setting lever 7 and a winding stem 4 is removed. Thus, the normal movement having no movement provided with a special component such as the setting lever can be used. In addition, a space for the projected setting lever and a regulation structure so as to excessively push the setting lever are not needed at a dial outer peripheral side, so that miniaturization can be performed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a timepiece having a one-piece type outer case.

The exterior case of a watch includes an exterior case having a back cover and a one-piece exterior case in which a portion corresponding to the back cover is integrally formed. The one-piece type outer case is used because it has a small number of parts, is clean in appearance, or hardly accumulates dirt between the back cover and the outer case.
Movements are housed in these exterior cases, and in the case of an analog type timepiece, a winding stem having a crown is inserted into the movement from the outside through the exterior case. A setting lever is engaged with the inserted winding stem.

  By the way, when it is necessary to remove the movement from the outer case for repair of the movement or the like, the movement must be taken out after removing the winding stem regardless of the form of the outer case. In addition, the winding stem itself may need to be replaced. For this reason, when the winding stem unloading portion provided on the setting lever is pushed by an external force, the engagement between the setting stem and the winding stem is released and the winding stem comes off.

  Specifically, in an outer case with a back cover, a winding stem unwinding portion of the setting lever is provided on the opposite side (back cover side) from the dial and the pointer so that it can be pressed by removing the back cover. Although it is possible to press from the dial side, it is not preferable in terms of appearance to provide a hole for pressing in the dial area, and the dial may be damaged when the unwinding part is pressed. There is also sex. Then, the back cover is removed, and the movement is removed after the winding stem is pulled out while pushing the unwinding portion on the back cover side.

On the other hand, in the case of a one-piece type outer case without a back cover, the glass edge that holds the cover glass is removed, and the unwinding part is pushed from the dial side. That is, a device is devised to push the unwinding portion at the outer periphery of the dial on the dial side.
For example, a movement lever is provided on the movement that can push the unwinding part of the setting lever hidden behind the dial, one end of the setting lever protrudes from the outer periphery of the dial, and one end of the setting lever is moved from the dial side. A method of operating and releasing the engagement between the winding stem unloading portion and the winding stem is known (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 7-270547 (pages 2 to 3, FIG. 1)

  However, according to Patent Document 1, since a setting lever is required as a movement accommodated in a one-piece type outer case, a normal movement that is accommodated in an outer case with a back cover is used as it is. There is a problem that it cannot be diverted as a movement for exterior cases. In addition, a space for the protruding lever lever and a restricting structure that prevents the lever lever from being pushed excessively must be provided on the outer periphery of the dial, requiring extra space on the outer periphery, which hinders downsizing. There are problems such as.

  An object of the present invention is to provide a timepiece that can incorporate a normal movement and can be downsized.

  The timepiece of the present invention includes a one-piece type outer case, a movement housed in the outer case, a winding stem that passes through the outer case and is inserted into the movement, and a setting lever that engages the winding stem. The bottom of the outer case is provided with an external operation button capable of pressing the winding stem unwinding portion of the setting lever from the outside.

  According to the present invention, the bottom part of the one-piece type outer case is provided with the external operation button capable of pushing the winding stem unwinding part from the outside, so that the external operation can be performed from the same direction as the normal movement. By operating the button, the unwinding portion of the setting lever is pressed, and the setting lever and the winding stem are disengaged. Therefore, even when a one-piece type outer case is used, it is not necessary to produce a movement having special parts such as a lever lever, and a normal movement is incorporated. Further, since there is no need for a space for the protruding lever lever or a restricting structure for preventing the lever lever from being pushed too much on the outer periphery side of the dial, it is easy to reduce the size.

In the present invention, the engaging portion of the setting lever with the winding stem is located on the opposite side of the dial from the dial, and between the engaging portion and the winding stem removing portion. The pivoting shaft of the setting lever is loosely fitted, and when the winding stem unloading portion is pressed against the dial side by the external operation button, the setting portion is configured so that the engaging portion is supported by the rotation shaft. A configuration in which the engagement with the winding stem is released by moving to the opposite side of the dial is preferable.
In the present invention, the engaging portion is surely detached to the bottom side by pressing the winding stem unwinding portion from the opposite side of the dial with the pivot shaft as a fulcrum.

In the present invention, it is preferable that the external input surface of the button is in a position recessed from the external surface of the one-piece type outer case.
In this invention, since the external input surface of the button is located on the movement side with respect to the external surface of the one-piece-type exterior case, an erroneous operation such as pressing the button accidentally without touching the external input surface in a normal use state. Disappears.

In the present invention, it is preferable that the unwinding portion is a curved long hole.
In this invention, when the movement is incorporated into the outer case, the setting lever moves, and even if the unwinding part and the external operation button are incorporated with the position slightly deviated, the unwinding part is hole-shaped. When the external operation buttons are accommodated, mutual positioning is surely performed.
Also, even if the setting lever moves when the winding stem is pulled to correct the time, etc., the external operation button is kept in a state of being fitted along the curved elongated hole winding section, and the setting lever is obstructed by the external operation button. I can move without it.

  According to the present invention, it is possible to provide a timepiece that can incorporate a normal movement and can be downsized.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a plan view, a cross-sectional view, and an enlarged cross-sectional view of the external operation button 2 in the vicinity of the external operation button 2 of the timepiece 1 according to the present embodiment.
1, 2, and 3, the winding stem 4 inserted through from the outside of the one-piece type outer case 3 is attached to the dial 11 by the setting part 7 and the engaging part 8 that are disposed on the base plate 6 of the movement 5. Engaged on the opposite side. The setting lever 7 is loosely fitted to a setting pin 10 as a rotating shaft, and its posture is held by a yoke 20 and a back press (not shown).
The setting lever 7 is provided with a winding stem unmounting portion 9 for releasing the engagement with the winding stem 4. The winding stem unmounting portion 9 is provided on the side opposite to the engaging portion 8 with respect to the setting pin 10. A tip end portion 14 of the external operation button 2 that can be pressed from the outside is in contact with the winding stem removal portion 9. Moreover, the shape of the winding stem unmounting portion 9 is a long hole-like groove that is curved along its own rotation trajectory, and even if the setting lever 7 rotates around the setting pin 10, the rotation is controlled by an external operation. The front end 14 of the button 2 is not obstructed.

The external operation button 2 is arranged as follows.
A round hole 12 is formed in the bottom 3a corresponding to the back cover of the one-piece type outer case 3 at a position where the unwinding portion 9 of the setting lever 7 can be pushed in a state where the movement 5 is set. A waterproof pipe 13 is fitted into the round hole 12, and the external operation button 2 is set in the waterproof pipe 13.

Hereinafter, the external operation button 2 will be described in detail with reference to FIG.
In FIG. 3, the external operation button 2 has a front end portion 14 that is in contact with the winding unwinding portion 9 of the setting lever 7, a flange 15 for preventing the external operation button 2 from falling off, and a packing groove in which a packing 18 is mounted. 16 and an external input surface 17 having a recess 30 is formed. The external operation button 2 is urged toward the bottom 3a side through the setting lever by the back press described above.
The material of the external operation button 2 was stainless steel. As the material of the external operation button 2, any material such as ceramic or synthetic resin may be used as long as the setting lever 7 can be pressed. For the packing 18, rubber, synthetic resin or the like can be used. Stainless steel was used for the material of the guide ring 17 and the waterproof pipe 13.

In the above configuration, the packing 18 is attached to the packing groove 16 of the external operation button 2, and the external operation button 2 is inserted into the waterproof pipe 13 from the inside of the exterior case 3 into the guide ring 19 and the waterproof pipe 13. At this time, when the external operation button 2 is completely inserted, the external input surface 17 having the recess 30 is in a position recessed from the external surface 31 of the outer case 3.
Thereafter, the movement is set on the outer case 3 by aligning the distal end portion 14 of the external operation button 2 with the groove of the winding unwinding portion 9. Next, the winding stem 4 is inserted through the outer case 3 until it engages with the setting lever 7. Finally, a cover glass and a glass edge are attached to obtain the timepiece 1.

The movement of each part by pressing the external operation button 2 is as follows.
When the external operation button 2 is pressed, the unwinding portion 9 of the setting lever 7 is pressed to the dial plate 11 side, and the setting portion 7 is tilted (indicated by a two-dot chain line) with the setting pin 10 as a fulcrum. Is separated from the winding stem 4, and the winding stem 4 comes out of the movement 5 through the outer case 3 (see the arrow in the enlarged sectional view of FIG. 3).
Since the external operation button 2 is urged toward the bottom 3a side of the outer case 3 via the setting lever 7 by the above-described back press, when the pressing is stopped, the external operation button 2 returns to the original position.

  It should be noted that, as shown in FIG. 1, for the crown 20, the setting lever 21, the clutch wheel 22, the minute wheel 23, the hour wheel 24, the second wheel 25, the third wheel 26, and the fourth wheel 27, Since the arrangement and operation are known, the description is omitted.

According to this embodiment, there are the following effects.
(1) Since the bottom portion 3a of the one-piece type outer case 3 is provided with the external operation button 2 that can push the winding stem unwinding portion 9 of the setting lever 7 from the outside, the same direction as the normal movement 5 is provided. By operating the external operation button 2 from, the winding stem unmounting portion 9 of the setting lever 7 can be pressed, and the setting lever 7 and the winding stem 4 can be disengaged. Therefore, it is not necessary to produce a movement provided with special parts such as a lever lever, and a normal movement 5 can be incorporated even in a one-piece type outer case 3. Furthermore, since there is no need for a space for the protruding setting lever and a regulating structure for preventing the setting lever from being pushed too much on the outer peripheral side of the dial, the size can be reduced.

(2) Even if the setting lever 7 moves when the movement 5 is incorporated into the outer case 3 and the winding stem unmounting portion 9 and the external operation button 2 are slightly displaced, the unwinding portion 9 has a hole shape. As a result, the external operation button 2 can be accommodated so as to be guided by the hole, and the mutual positioning can be performed reliably.
Even if the setting lever 7 moves when the winding stem 4 is pulled due to time correction or the like, the distal end portion 14 of the external operation button 2 is located in the curved long hole-shaped winding stem unmounting portion 9. Therefore, the setting lever 7 can be moved without being disturbed by the external operation button 2.

(3) By pressing the winding unwinding portion 9 from the opposite side of the dial 11 with the setting pin 10 as a fulcrum, the engaging portion 8 can be reliably removed to the bottom 3a side.

(4) Since the external input surface 30 of the external operation button 2 is located on the side of the movement 5 that is recessed from the external surface 31 of the one-piece type outer case 3, it is possible to eliminate erroneous operations such as pressing the external operation button 2 by mistake. Can do.

(5) Since the external operation button 2 includes the packing 18, it is possible to prevent sweat and water from entering through the external operation button 2 from the outside.

(6) Static electricity that enters the movement 5 through the winding stem 4 can escape to the human body through the metal setting 7, the external operation button 2, the waterproof pipe 13, the guide ring 19, and the exterior case 3. it can.
Even if the outer case 3 is made of a synthetic resin, if other members are conductive members, static electricity can escape through the waterproof pipe 13, and there is no problem with respect to static electricity countermeasures.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
The winding stem removal portion 9 does not have to be a groove having a concave cross section, and may be hole-shaped as long as it can be pushed by the distal end portion 14 of the external operation button 2 and can guide the distal end portion 14. In this case, the tip end portion 14 has, for example, a stepped shape. In the above-described embodiment, the tip portion 14 returns to the original position through the setting lever 7 by the biasing of the back presser. A spring can be inserted between the ring 19 and the ring 19 to be surely returned. In that case, the spring and the guide ring 19 may be fixed with a conductive adhesive. By doing so, the locking structure between the spring and the guide ring 19 can be simplified, and it is also a countermeasure against static electricity.
Furthermore, the present invention can be applied to a case having a back cover. If an external operation button is provided on the back cover, the replacement can be performed without removing the back cover, for example, when only the winding stem needs to be replaced.

Although the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, the present invention is not limited to this. That is, the invention has been illustrated and described primarily with respect to particular embodiments, but may be configured for the above-described embodiments without departing from the scope and spirit of the invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations.
Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such restrictions is included in this invention.

The partial top view of the timepiece concerning one embodiment of the present invention. The fragmentary sectional view of the timepiece concerning one embodiment of the present invention. The expanded sectional view of the button part of the timepiece concerning one embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Clock, 2 ... External operation button, 3 ... One-piece-type exterior case, 3a ... Bottom of (outer case), 4 ... Winding stem, 5 ... Movement, 6 ... Base plate, 7 ... Shiddle, 8 ... Engagement part, DESCRIPTION OF SYMBOLS 9 ... Unwinding part, 10 ... Setting pin as rotating shaft, 11 ... Dial, 30 ... External input surface (of external operation button), 31 ... External surface (of exterior case)

Claims (4)

One-piece exterior case,
A movement housed in the exterior case;
A winding stem inserted through the outer case and into the movement,
A setting lever that engages the winding stem,
The timepiece according to claim 1, wherein an external operation button capable of pressing the unwinding portion of the setting lever from the outside is provided at the bottom of the outer case. The timepiece according to claim 1,
The engaging portion of the setting lever with the winding stem is located on the opposite side of the dial from the dial, and the setting lever is between the engaging portion and the winding stem removal portion. The swivel shaft is loosely fitted, and when the unwinding portion is pressed to the dial side by the external operation button, the engaging portion is connected to the dial with the pivot shaft as a fulcrum. Moves to the opposite side, and the engagement with the winding stem is released. The timepiece according to claim 1 or 2,
The timepiece characterized in that an external input surface of the external operation button is in a position recessed from an external surface of the one-piece type outer case. The timepiece according to any one of claims 1 to 3,
The timepiece unwinding portion has a curved long hole shape.

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