JP2010286260A - Electronic wrist watch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic wrist watch that shares a connection component such as a terminal board and takes measures against static electricity, even when the shape of a wrist watch case and the installation position of an operation member depend on the wrist watch. <P>SOLUTION: The terminal board 15 electrically connected to a top surface button 10 as the operation member is disposed in the wrist watch case 1, and a contact piece 17 having a length adjustment section 18 is disposed in the terminal board 15. Therefore, when the contact piece 17 of the terminal board 15 disposed in the wrist watch case 1 is brought into contact with a rear lid, the length of the contact piece 17 to the rear lid can be adjusted by a length adjustment section 18 of the contact piece 17. Therefore, even when the shape of the wrist watch case 1 and the installation position of the top surface button 10 vary for every wrist watch, the terminal board 15 can be shared, and the measures against static electricity on the top surface button 10 can be certainly and sufficiently taken by the terminal board 15. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electronic wristwatch provided with an operation member such as a push button.

  Conventionally, in an electronic wristwatch, in order to prevent adverse effects due to static electricity when operating an operation member such as a push button, an annular inner frame formed of a conductive material such as metal is provided in the watch case, and a battery is provided on the inner frame. The first contact piece that comes into contact with the presser plate and the second contact piece that comes into contact with the operation member are integrally formed, and the battery presser plate that comes into contact with the battery electrode and the operation member are electrically connected by the middle frame. Therefore, there is known one configured to release static electricity.

JP 2006-215043 A

  However, in such a conventional electronic wristwatch, when the middle frame is arranged in the wristwatch case, the height, angle, and width of the middle frame with respect to the wristwatch case differ depending on the shape of the wristwatch case, and the push button Since the mounting angle and installation position of the operation member differ depending on the shape of the watch case, there is a problem that the inner frame must be manufactured according to the shape of the watch case and the installation position of the operation member.

  The problem to be solved by the present invention is to provide an electronic wristwatch capable of taking countermeasures against static electricity by using a common connection part such as a terminal plate even if the shape of the wristwatch case and the installation position of the operation member are different for each wristwatch. That is.

In order to solve the above problems, the present invention includes the following components.
The invention described in claim 1 is a wristwatch case, a conductive back cover attached to the back surface of the wristwatch case, an operation member provided in the wristwatch case so as to penetrate inside and outside, A contact plate attached to the inner surface of the watch case and in contact with the back cover, and a terminal plate electrically connected to the operation member; and the back cover on the contact piece of the terminal plate This is an electronic wristwatch provided with a length adjusting portion capable of adjusting the length of contact with the watch.

  According to a second aspect of the present invention, the length adjusting portion is a plurality of cutout portions provided at both sides of the contact piece along the longitudinal direction at a predetermined interval, and the cutout for each predetermined interval is provided. The electronic watch according to claim 1, wherein the contact piece can be bent or cut by the notch.

  According to a third aspect of the present invention, the length adjusting portion is a plurality of holes provided at predetermined intervals along the longitudinal direction of the contact piece, and the contact piece is formed by the holes at every predetermined interval. The electronic wristwatch according to claim 1, wherein bending or cutting is enabled.

  According to a fourth aspect of the present invention, the length adjusting portion is a net-like portion that is continuously provided along the longitudinal direction of the contact piece and has a large number of small holes. The electronic watch according to claim 1, wherein the contact piece can be bent or cut.

  According to a fifth aspect of the present invention, an arrangement portion for arranging the terminal plate protrudes from an inner surface of the watch case at a position where the operation member is located, and the protrusion is provided on the terminal plate. The electronic wristwatch according to any one of claims 1 to 4, wherein a pair of attachment pieces for sandwiching both side portions of the arranged portion is provided.

  According to the present invention, when the contact piece formed on the terminal plate electrically connected to the operation member is brought into contact with the back cover, the length adjusting portion provided on the contact piece allows the contact piece to be attached to the back cover. The length can be adjusted. For this reason, even if the shape of the watch case and the installation position of the operation member are different for each wristwatch, the terminal plate which is a connecting part can be used in common, and this terminal plate ensures reliable and good antistatic measures on the operation member. Can be aimed at.

1 is an enlarged front view showing Embodiment 1 of an electronic wristwatch to which the present invention is applied. It is an expanded sectional view in the AA arrow of the electronic wristwatch of FIG. FIG. 3 is an enlarged perspective view of a main part showing a state in which the vicinity of a top button is viewed from the back side in the watch case of FIG. 2. It is the disassembled perspective view which showed the principal part in the upper surface button of FIG. It is the expansion perspective view which showed the terminal board of FIG. It is the enlarged front view which showed Embodiment 2 of the electronic wristwatch to which this invention is applied. It is an expanded sectional view in the BB arrow of the electronic wristwatch of FIG. FIG. 8 is an enlarged perspective view of a main part showing a state in which the vicinity of the top button is viewed from the back side in the watch case of FIG. 7. It is the disassembled perspective view which showed the principal part in the upper surface button of FIG. FIG. 10 is an enlarged perspective view showing the terminal board of FIG. 9. FIG. 10 is an enlarged perspective view showing a modification of the terminal board of Embodiment 2. It is the expansion perspective view which showed only the terminal board in Embodiment 3 of the electronic wristwatch to which this invention is applied.

(Embodiment 1)
A first embodiment of an electronic wristwatch to which the present invention is applied will be described below with reference to FIGS.
This electronic wristwatch includes a wristwatch case 1 as shown in FIGS. The wristwatch case 1 includes a case body 2, an annular first bezel 3 provided on the upper portion of the case body 2, and a second bezel 4 provided on the outer periphery of the case body 2 and the first bezel 3. Has been.

As shown in FIG. 2, a watch glass 5 is attached to the upper opening of the case main body 2 of the watch case 1 via a packing 5a, and a conductive material such as metal is attached to the lower portion of the case main body 2. A back cover 6 having a rim is attached via a waterproof ring 6a. In addition, a clock module 7 is accommodated in the case body 2. Although not shown, the timepiece module 7 includes various parts necessary for a timepiece function such as a display unit for displaying information such as time and a timepiece movement for indicating the time by moving the hands.

Further, as shown in FIG. 1, a side button 8 is provided on each side portion corresponding to 2 o'clock, 4 o'clock, 8 o'clock and 10 o'clock in the wristwatch case 1, and 6 As shown in FIGS. 1 and 2, an upper surface button 10 is provided on the upper surface side corresponding to the occasion. The side button 8 and the top button 10 are operation members for operating from the outside of the watch case 1, respectively, and are provided in the watch case 1 so as to penetrate from the outside to the inside.

Among these operating members, the top button 10 located on the 6 o'clock side includes a button portion 11 and a button shaft 12 as shown in FIG. 2, and the button portion 11 is located outside the watch case 1, The shaft 12 is configured to protrude into the watch case 1 through the through hole 2 a of the case body 2. In this case, as shown in FIG. 2, the case body 2 is provided with a through hole 2 a inclined from the upper side toward the lower side.

As shown in FIG. 2, the button portion 11 is disposed on the outer surface of the case body 2 so as to correspond to the through hole 2 a. The button shaft 12 is slidably inserted into the through hole 2a of the case body 2 and protrudes into the case body 2, and a metal tip such as an E-ring is formed at the protruding tip (the lower right end in FIG. 2). The retaining ring 13 is attached, and the retaining ring 13 is configured not to come out of the case body 2 to the outside.

In this case, as shown in FIGS. 2 and 3, the inner surface of the case main body 2 where the upper surface button 10 as the operation member is located is inclined from the upper side to the lower side (from the lower side to the upper side in FIG. 3). An inclined arrangement portion 14 is formed so as to protrude inside the case body 2. The inclined arrangement portion 14 is a portion corresponding to the retaining ring 13, and the corresponding arrangement surface is formed to be slightly larger than the outer diameter of the retaining ring 13.

Further, a terminal plate 15 is disposed on the inclined arrangement portion 14. The terminal plate 15 is made of a conductive metal plate, and as shown in FIGS. 3 and 4, as shown in FIGS. 3 and 4, the main body portion 16 disposed in the inclined arrangement portion 14 in the case main body 2 and the contact contacting the back cover 6. The piece 17 is configured to be integrally formed. That is, the main body 16 of the terminal board 15 is formed in a flat plate shape as shown in FIGS.

Further, as shown in FIGS. 3 to 5, an insertion hole 16 a into which the button shaft 12 of the upper surface button 10 that is an operation member is inserted is provided at the center of the main body 16. Further, as shown in FIGS. 3 and 4, a pair of attachment pieces 16 b for sandwiching both side portions of the inclined arrangement portion 14 that protrudes from the inside of the case body 2 as shown in FIGS. Is provided.

That is, the pair of attachment pieces 16b are bent toward the direction of approaching each other at an angle slightly smaller than an angle of 90 ° with respect to the main body portion 16 of the terminal plate 15, for example, an angle of about 80 °. Is placed along the both sides of the inclined arrangement part 14 protruding inside the case main body 2 and the both sides of the inclined arrangement part 14 are sandwiched by The main body portion 16 is configured to be attached to the inclined arrangement portion 14.

Thereby, as shown in FIG. 3, when the main body portion 16 is arranged on the inclined arrangement portion 14 of the case main body 2, the pair of attachment pieces 16 b sandwich the both sides of the inclined arrangement portion 14. In this state, the tip of the button shaft 12 of the top button 10 (the left end in FIG. 4) is inserted into the insertion hole 16a, and the retaining ring 13 is attached to the tip of the inserted button shaft 12. The retaining ring 13 is configured to be in contact with the main body portion 16 to be conducted.

On the other hand, as shown in FIGS. 3 to 5, the contact piece 17 of the terminal plate 15 extends from the side portion (upper side portion in FIG. 4) of the terminal plate 15 located on the back cover 6 side to the back cover 6 side (in FIG. 4). It is formed in a strip shape extending sufficiently long (upward). As shown in FIGS. 4 and 5, the strip-shaped contact piece 17 is provided with a length adjusting portion 18 that can adjust the length of contact with the back cover 6.

As shown in FIG. 5, the length adjusting portion 18 is a plurality of notches 18 a provided at predetermined intervals along the longitudinal direction on both sides of the contact piece 17. The plurality of cutout portions 18a are V-shaped cut grooves formed on both sides of the contact piece 17 so as to face each other. As shown in FIG. The contact piece 17 is configured to be bent or cut at each position of each of the plurality of notches 18a.

That is, the length adjusting portion 18 is located at a position corresponding to the contact length with respect to the back cover 6 among the plurality of cutout portions 18a provided at both sides of the contact piece 17 along the longitudinal direction thereof. When the length of the contact piece 17 is adjusted by bending the contact piece 17 as shown in FIGS. 3 and 4 at the notch portions 18a facing each other, or when the contact piece 17 is longer than necessary. Further, the length of the contact piece 17 is adjusted by cutting the contact piece 17 at the location of the notch portion 18a facing each other at an unnecessary location corresponding to the contact length with the back cover 6. Yes.

Next, a case where the terminal plate 15 is attached to the wristwatch case 1 will be described.
First, the main body portion 16 of the terminal plate 15 is arranged on the inclined arrangement portion 14 formed on the inner surface of the case main body 2 of the watch case 1. At this time, as shown in FIG. 3, the insertion hole 16a provided in the central portion of the main body portion 16 is made to correspond to the through hole 2a provided in the case main body 2, and in this state, provided on both side portions of the main body portion 16. The pair of mounting portions 16b are press-fitted along both side portions of the inclined arrangement portion 14 protruding inside the case main body 2.

As a result, the pair of attachment portions 16b sandwich the both side portions of the inclined arrangement portion 14 of the case main body 2, so that the main body portion 16 of the terminal plate 15 is attached without being detached from the inclined arrangement portion 14 of the case main body 2. In this state, as shown in FIG. 2, the button shaft 12 of the upper surface button 10 which is an operation member is inserted into the through hole 2a of the case body 2 from the outside of the watch case 1, and the tip of the button shaft 12 (FIG. 2). Then, the right end) is protruded into the case body 2.

At this time, the distal end portion of the button shaft 12 is inserted into the insertion hole 16 a provided in the main body portion 16 of the terminal plate 15 and protrudes into the case main body 2. A retaining ring 13 is attached to the protruding end of the button shaft 12. Thus, the top button 15 is slidably attached in the push-in direction without the button shaft 12 coming out of the watch case 1 in a state where the button portion 11 is exposed to the outside of the watch case 1 and is prevented from being removed. The ring 13 comes into contact with the main body portion 16 of the terminal board 15 and is conducted.

In this state, the length of the contact piece 17 of the terminal plate 15 with respect to the back cover 6 is adjusted. At this time, the contact piece 17 is bent or cut according to the contact length with respect to the back cover 6 by the length adjusting portion 18 provided on the contact piece 17, so that the contact piece 17 is bent. Adjust the length of 17. In this case, as shown in FIG. 5, the length adjusting portion 18 is a plurality of notches 18 a provided at predetermined intervals along the longitudinal direction on both sides of the contact piece 17.

For this reason, as shown in FIG. 3 and FIG. 4, the contact piece 17 is formed at the position of the notch portions 18 a facing each other at a position corresponding to the contact length with the back cover 6 among the plurality of notch portions 18 a. By bending, the length of the contact piece 17 is adjusted so that the contact piece 17 is in good contact with the inner surface of the back cover 6. Further, when the contact piece 17 is longer than necessary, the contact piece 17 is cut on the inner surface of the back cover 6 by cutting the contact piece 17 at the position of the notch 18a facing each other at the position of the unnecessary portion. The length of the contact piece 17 is adjusted so that the contact is good.

When the back cover 6 is attached to the back surface of the case body 2 in this state, the contact piece 17 of the terminal plate 15 comes into contact with the back cover 6 and becomes conductive. For this reason, when the main body portion 16 of the terminal plate 15 is in contact with the retaining ring 13 attached to the button shaft 12 of the upper surface button 10 that is an operation member, the retaining ring 13 that is a part of the upper surface button 10. And the back cover 6 are electrically connected by the terminal plate 15, and static electricity generated in the top button 10 can be released to the back cover 6.

As described above, according to the electronic wristwatch, the conductive back cover 6 attached to the back surface of the watch case 1 and the upper surface which is an operation member provided in the watch case 1 so as to penetrate the inside and the outside of the watch case 1. A button 10 and a terminal plate 15 attached to the inner surface of the wristwatch case 1 and formed with a contact piece 17 that contacts the back cover 6 and electrically connected to the upper surface button 10 are provided. Since the length adjusting portion 18 capable of adjusting the length of contact with the back cover 6 is provided on the piece 17, even if the shape of the watch case 1 and the installation position of the top button 10 are different for each watch, the terminal board 15 can be shared to take measures against static electricity.

That is, when the contact piece 17 formed on the terminal plate 15 electrically connected to the upper surface button 10 which is an operation member is brought into contact with the back cover 6, the length adjusting portion 18 provided on the contact piece 17 is used. The length of the contact piece 17 with respect to the back cover 6 can be adjusted. For this reason, even if the installation position of the upper surface button 10 with respect to the wristwatch case 1 is different for each wristwatch, the terminal plate 15 can be made common, thereby facilitating the inventory management of parts and the terminal plate 15. Thus, it is possible to reliably and satisfactorily take countermeasures against static electricity in the upper surface button 10.

In this case, the length adjusting portion 18 is a plurality of cutout portions 18a provided at both sides of the contact piece 17 along the longitudinal direction at a predetermined interval, and the contact piece is formed by the cutout portions 18a at every predetermined interval. The structure that enables the bending or cutting of 17 makes the structure of the length adjusting portion 18 simple and easy to manufacture, and also to the back cover 6 of the plurality of notches 18a. The contact piece 17 can be easily bent at the position of the notch portions 18a facing each other at a position corresponding to the contact length, and if the contact piece 17 is longer than necessary, the unnecessary portion The contact piece 17 can be easily cut at the locations of the notch portions 18a facing each other, whereby the length of the contact piece 17 can be easily adjusted.

In addition, the terminal plate 15 faces the direction in which the pair of attachment portions 16b on both sides of the main body portion 16 approach each other at an angle slightly smaller than an angle of 90 ° with respect to the main body portion 16, for example, an angle of about 80 °. Since it is bent, when attaching the main body portion 16 to the inclined arrangement portion 14 protruding inside the case main body 2, the pair of attachment portions 16 b can be press-fitted along both sides of the inclined arrangement portion 14. Thus, the main body portion 16 can be securely attached to the inclined arrangement portion 14. For this reason, the terminal board 15 can be securely attached to the inclined arrangement portion 14 without using a double-sided adhesive tape or an adhesive.

(Embodiment 2)
Next, a second embodiment of an electronic wristwatch to which the present invention is applied will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected and demonstrated to the same part as Embodiment 1 shown by FIGS.
As shown in FIG. 10, the electronic wrist watch has a configuration in which the contact piece 20 of the terminal plate 15 is different from that of the first embodiment, and the configuration other than this is substantially the same as that of the first embodiment.

In this case, as shown in FIGS. 6 and 7, the watch case 1 is provided with a first bezel 3 on the upper outer periphery of the case body 2, and a bezel cover 3a on the outer periphery of the first bezel 3. The second bezel 4 is provided on the outer periphery of the first embodiment, and the other configurations are the same as those of the first embodiment. Also in this case, a side button 8 is provided on each side portion of the watch case 1 at 2 o'clock, 4 o'clock, 8 o'clock, and 10 o'clock, and the upper surface of the watch case 1 at 6 o'clock is provided on the upper side. As shown in FIGS. 6 and 7, a top button 10 is provided.

By the way, the terminal board 15 consists of a metal plate like Embodiment 1, and as shown in FIGS. 8-10, the main-body part 16 arrange | positioned at the inclination arrangement | positioning part 14 in the case main body 2, and the back cover 6 are attached. The contact piece 20 that comes into contact is formed integrally. Also in this case, the main body portion 16 of the terminal board 15 is formed in a flat plate shape as shown in FIGS. 9 and 10, and the button shaft 12 of the upper surface button 10 that is an operation member is provided at the center thereof. An insertion hole 16a for insertion is provided. Further, a pair of attachment pieces 16 b are provided on both sides of the main body 16 so as to sandwich the both sides of the inclined arrangement portion 14 protruding inside the case main body 2.

As a result, the terminal plate 15 has the main body portion 16 disposed in the inclined arrangement portion 14 of the case main body 2 and the pair of attachment pieces 16b sandwich the both side portions of the inclined arrangement portion 14 as in the first embodiment. Then, the tip of the button shaft 12 of the top button 10 (the end of the left side in FIG. 4) is inserted into the insertion hole 16a, and the retaining ring 13 is attached to the tip of the inserted button shaft 12. The retaining ring 13 is configured to come into contact with the main body portion 16 to conduct.

On the other hand, as shown in FIG. 9 and FIG. 10, the contact piece 20 of the terminal plate 15 extends from the side portion (upper side portion in FIG. 9) of the terminal plate 15 located on the back cover 6 side to the back cover 6 side (in FIG. 9). It is formed in a strip shape extending sufficiently long (upward). As shown in FIGS. 9 and 10, the strip-shaped contact piece 20 is provided with a length adjusting portion 21 that can adjust the length of contact with the back cover 6.

As shown in FIG. 10, the length adjusting portion 21 is a plurality of long holes 21 a provided in the contact piece 21 at predetermined intervals along the longitudinal direction thereof. The plurality of long holes 21a are elongated in the width direction orthogonal to the longitudinal direction of the contact piece 20, and each of the plurality of long holes 21a is in accordance with the length in contact with the back cover 6. It is configured to allow the contact piece 20 to be bent or cut in position.

That is, the length adjusting portion 21 is a length of a position corresponding to the length of contact with the back cover 6 among the plurality of long holes 21a provided at predetermined intervals along the longitudinal direction of the contact piece 20. The length of the contact piece 20 is adjusted by bending the contact piece 20 at the location of the hole 21a, or when the contact piece 20 is longer than necessary, at the location of the long hole 21a located in the unnecessary portion. The length of the contact piece 20 is adjusted by cutting the contact piece 20.

Such an electronic wrist watch has the same effect as that of the first embodiment, and contacts the back cover 6 with the contact piece 20 formed on the terminal plate 15 that is electrically connected to the top button 10 that is an operation member. When doing so, the length of the contact piece 20 with respect to the back cover 6 can be adjusted by the length adjusting portion 21 provided on the contact piece 20. Therefore, even if the position of the upper surface button 10 with respect to the wristwatch case 1 and the shape of the wristwatch case 1 are different for each wristwatch, the terminal board 15 can be made common, thereby facilitating inventory management of parts. In addition, the terminal plate 15 can reliably and satisfactorily take measures against static electricity on the upper surface button 10.

In this case, the length adjusting unit 21 is a plurality of long holes 21a provided at predetermined intervals along the longitudinal direction of the contact piece 20, and the contact pieces 20 are bent or bent by the long holes 21a at the predetermined intervals. Due to the configuration that enables cutting, the structure of the length adjusting unit 21 is simple and can be easily manufactured, and the length of the plurality of long holes 21a is in contact with the back cover 6. The contact piece 20 can be easily bent at the position of the long hole 21a at the position where the contact piece 20 is longer than necessary, and if the contact piece 20 is longer than necessary, the contact piece 20 at the position of the long hole 21a located at the unnecessary portion. Can be easily cut, whereby the length of the contact piece 20 can be easily adjusted.

In the second embodiment described above, the length adjusting portion 21 provided on the contact piece 20 of the terminal plate 15 is a plurality of long holes 21 a provided at predetermined intervals along the longitudinal direction of the contact piece 20. However, the present invention is not limited to this. For example, as shown in FIG. 11, as the length adjusting portion 23, one long hole 23 a continuous along the longitudinal direction of the contact piece 20 is provided, and the long holes 23 a are mutually connected. The structure which provided the some notch part 23b at predetermined intervals along the longitudinal direction of the contact piece 20 in the edge part which opposes may be sufficient.

If comprised in this way, back cover 6 among the some notch parts 23b provided in the edge part of one long hole 23a which continues along the longitudinal direction of the contact piece 20 similarly to Embodiment 1,2. The contact piece 20 can be easily bent at the position of the pair of notch portions 23b facing each other at a position corresponding to the length of contact with the contact piece 20, and if the contact piece 20 is longer than necessary, The contact piece 20 can be easily cut at the pair of notch portions 23b located in unnecessary portions, and the length of the contact piece 20 can be easily adjusted.

(Embodiment 3)
Next, with reference to FIG. 12, Embodiment 3 of the electronic wrist watch to which the present invention is applied will be described. Also in this case, the same parts as those in the first embodiment shown in FIGS.
As shown in FIG. 12, the electronic wrist watch has a length adjusting unit 31 provided on the contact piece 30 of the terminal plate 15 that is different from that of the first embodiment, and the other configurations are the same as those of the first and second embodiments. It has become.

That is, the contact piece 30 of the terminal plate 15 is the same as in the first embodiment, from the side of the terminal plate 15 located on the back cover 6 side (the upper left side in FIG. 12) to the back cover 6 side (left in FIG. 12). It is formed in a strip shape extending sufficiently long (upwardly obliquely). As shown in FIG. 12, the strip-shaped contact piece 30 is provided with a length adjusting unit 31 that can adjust the length of contact with the back cover 6.

As shown in FIG. 12, the length adjusting portion 31 is a net-like portion 32 in which a large number of small holes 32 a are provided in an elongated region continuous along the longitudinal direction of the contact piece 30. The net-like portion 32 is provided with a large number of small holes 32a in the region, so that the contact piece 30 can be bent or cut at a position corresponding to the length of contact with the back cover 6. It is configured to be

That is, the length adjusting portion 31 is provided at an arbitrary position of the net-like portion 32 by providing the contact piece 30 with a large number of small holes 32a in the net-like portion 32 continuous along the longitudinal direction. When the contact piece 30 is bent and the length of the contact piece 30 is adjusted, or the contact piece 30 is longer than necessary, the contact piece 30 is cut at a position located at an unnecessary portion thereof. It is configured to adjust the length.

According to such an electronic wristwatch, in addition to the same effects as those of the first embodiment, the length adjusting portion 31 of the contact piece 30 is provided continuously along the longitudinal direction of the contact piece 30, and many The contact piece 30 can be easily bent at an arbitrary position of the net-like portion 32 corresponding to the length of contact with the back cover 6. When the contact piece 30 is longer than necessary, the contact piece 30 can be easily cut at an arbitrary position of the net-like portion 32 located in the unnecessary portion, thereby making the length of the contact piece 30 easy. Can be adjusted to.

In the above-described first to third embodiments and modifications thereof, the case where the operation member is applied to the upper surface button 10 located on the 6 o'clock side of the watch case 1 has been described, but the upper surface button 10 is not necessarily required. The present invention can also be applied to the side button 8 provided on each side of the watch case 1 at 2 o'clock, 4 o'clock, 8 o'clock, and 10 o'clock.

DESCRIPTION OF SYMBOLS 1 Watch case 2 Case main body 2a Through-hole 6 Back cover 7 Clock module 8 Side button 10 Upper surface button 11 Button part 12 Button shaft 13 Retaining ring 14 Inclined arrangement part 15 Terminal board 16 Main part 16a Insertion hole 16b A pair of attachment pieces 17 , 20, 30 Contact pieces 18, 21, 23, 31 Length adjusting portion 18a, 23b Notch portion 21a, 23a Long hole 32 Net-like portion 32a Small hole

Claims (5)

A watch case,
A conductive back cover attached to the back of the watch case;
An operation member provided through the inside and outside of the watch case;
A contact plate that is attached to the inner surface of the watch case and that is in contact with the back cover and is electrically connected to the operation member;
An electronic wristwatch characterized in that a length adjusting portion capable of adjusting a length of contact with the back cover is provided on the contact piece of the terminal plate.   The length adjusting portion is a plurality of notches provided at predetermined intervals along the longitudinal direction on both sides of the contact piece, and the contact pieces are bent by the notch at every predetermined interval. The electronic wristwatch according to claim 1, wherein the electronic wristwatch can be cut.   The length adjusting portion is a plurality of holes provided at predetermined intervals along the longitudinal direction of the contact piece, and the contact pieces can be bent or cut by the holes at predetermined intervals. The electronic wristwatch according to claim 1. The length adjusting portion is a net-like portion that is continuously provided along the longitudinal direction of the contact piece and has a large number of small holes, and the contact piece is bent or cut by the net-like portion. The electronic wristwatch according to claim 1, which is made possible. An arrangement portion for arranging the terminal plate is provided on the inner surface of the wristwatch case at a position where the operation member is located, and the terminal plate is sandwiched between both side portions of the protruding arrangement portion. The electronic wristwatch according to claim 1, further comprising a pair of attachment pieces to be attached.

Images