JPH11183650A - Electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an elastic buffer body to be pressed excellently, by preventing a retaining member from being rotated by the rotation of a cap body when the cap body is attached to an equipment case by rotating the cap body. SOLUTION: A back cap 20 is attached to a watch case 1 by screwing a male screw section 21 of the cap 20 in a female screw section 22 of the case 1, and a second elastic buffer member 12 provided between the cap 20 and a watch module 6 housed in the case 1 is pressed against the module 6 by means of a holder 13. Then a sliding member 24 with which the projecting section 16 of the holder 13 comes into contact is stuck to the internal surface of the cap 20. Since the holder 13 is slid by means of the sliding member 24 when the cap 20 is attached to the case 1 by rotating the cap 20, the rotation of the cap 20 is not transmitted to the holder 13 even when the cap 20 is rotated. Therefore, the rotation of the holder 13 caused by the rotation of the cap 20 can be prevented and the elastic buffer member 12 can be pressed excellently.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electronic device having an impact-resistant structure.

[0002]

2. Description of the Related Art Conventionally, as an electronic device having an impact resistant structure,
Electronic wrist watches are known. In this electronic wristwatch, an elastic buffer for absorbing and attenuating an external impact to absorb and attenuate is incorporated in a wristwatch case. The elastic buffer is disposed between the watch case and the watch module incorporated therein, and between the watch module and the back cover of the watch case. It is prevented from being transmitted to the watch module in the watch case. Further, such an electronic wristwatch employs a structure in which a metal back cover is screwed in to secure airtightness on the back side of the watch case. This screw-in structure forms a screw portion that is screwed to the inner peripheral surface on the back side of the watch case and the outer peripheral surface of the corresponding back cover, and the back cover is rotated to rotate the back cover on the back side of the watch case. The back cover is attached. In this case, in order to prevent the elastic buffer on the back cover side of the watch case from being irregularly deformed due to rotation when the back cover is attached, a holding plate for temporarily fixing the elastic buffer to the timepiece module and pressing it substantially uniformly. The pressing plate is provided with a plurality of projections for preventing full contact with the inner surface of the back cover.

[0003]

However, in such a wristwatch, since the inner surface of the back cover is cut,
Streaks formed by cutting on the inner surface of the back cover will be formed in an uneven shape, and these streaks will make the inner surface of the back cover slippery, so when turning the back cover and attaching it to the watch case, Protrusions of the plate are easily caught in the streaks on the inner surface of the back cover. In particular, when the back cover is made of a titanium material, it is difficult to be smooth as compared with a metal such as a stainless steel material. In such a case, the holding plate temporarily holding the timepiece module rotates with the rotation of the back cover, which causes the timepiece module to rotate within the wristwatch case and cause a positional shift, or a holding plate. The problem arises that the temporary fixing portion comes off.

[0004] It is an object of the present invention to prevent the holding member from rotating due to the rotation of the lid when the lid is rotated and attached to the device case, so that the elastic buffer can be pressed well.

[0005]

According to the first aspect of the present invention,
A device case having a screw portion formed thereon, a lid screwed to the screw portion of the device case, and attached to the device case, a device module housed in the device case, An elastic buffer disposed between the lid and the lid; a pressing member disposed between the elastic buffer and the lid to press the elastic buffer against the device module; and the pressing member and the lid. And a sliding member disposed between them. According to this invention, since the sliding member is arranged between the pressing member and the lid,
When the lid is rotated and attached to the device case, even if the lid rotates, the pressing member slides due to the sliding member, so that the rotation of the lid is not transmitted to the pressing member. Accordingly, it is possible to prevent the pressing member from rotating, and thereby the elastic module can be satisfactorily pressed without the device module rotating in the device case and causing a displacement.

According to a fourth aspect of the present invention, there is provided an equipment case having a threaded portion, a lid screwed to the screw portion of the equipment case and attached to the equipment case, and An elastic module disposed between the module and the lid; and an elastic module disposed between the elastic module and the lid to attach the elastic module to the module. And a sliding member is formed on the opposing surface of the lid facing the pressing member. According to this invention, since the sliding portion is formed on the opposing surface of the lid facing the pressing member, the lid rotates when the lid is rotated and attached to the device case, similarly to the invention according to claim 1. However, since the pressing member slides by the sliding portion of the lid, the rotation of the lid is not transmitted to the pressing member, and therefore, the pressing member can be prevented from rotating with the rotation of the lid. In addition to being able to satisfactorily press the elastic buffer, and especially since the sliding portion is formed on the lid, the number of components is smaller than that of the first aspect of the invention, and the assembling work and component management are simplified.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is applied to an electronic wristwatch will be described below with reference to FIGS. FIG. 1 is a front view of the electronic wristwatch, FIG. 2 is an enlarged sectional view of a main part showing a state where a back cover is attached, and FIG. 3 is an enlarged view of the main part with the back cover attached in FIG. It is sectional drawing. In these figures, reference numeral 1 denotes a watch case. A watch glass 2 is attached to the upper part of the watch case 1 via a packing 3, and a bezel 4 for giving decorativeness is attached to the upper part of the watch case 1 around the watch glass 2. Also,
Inside the watch case 1, a parting member 5 is provided, and the watch module 6 is connected to a first elastic cushioning member 7.
Is stored through. The clock module 6 calculates the time,
In addition to having a display unit 8 for displaying other information, it has various components such as a circuit board for controlling display contents and a battery for supplying power, and these components are assembled into a housing 9. I have. The first elastic cushioning member 7 is made of a soft synthetic resin such as rubber, and is fitted between the inner surface of the watch case 1 and the outer surface of the watch module 6 via a spacer 10 made of a synthetic resin.
It is configured to protect the timepiece module 6 against an impact from the side surface of the watch module. As shown in FIG. 1, a push button switch 11 for performing time correction, mode switching, alarm setting, and the like is provided on a side surface of the watch case 1.

[0010] As shown in FIGS. 2 and 3, a second elastic cushioning member (elastic cushioning member) 12 is temporarily fixed to a lower surface of the timepiece module 6 by a pressing plate (pressing member) 13. The second elastic cushioning member 12, like the first elastic cushioning member 7, is made of a soft synthetic resin such as rubber, and is formed in a ring shape as a whole. A plurality of elastic projections 14 are formed on the lower surface of the second elastic buffering member 12 at predetermined intervals along the circumference to prevent full contact with the pressing plate 13. The presser plate 13 is made of a metal plate such as stainless steel, and as a whole, is formed in a ring shape substantially the same as the second elastic buffer member 12, as shown in FIG. This holding plate 13
On the back surface of the holding plate 13, a plurality of protrusions 16 for preventing full contact with a sliding member 24 described later are provided along the circumference. They are formed at predetermined intervals. 2 and 3, the engaging piece 15 is formed by bending a part of the holding plate 13 upward, and the upper end thereof passes through the rectangular hole 17 of the second elastic cushioning member 12, and The watch module 6 is inserted and locked in a locking hole 18 formed in the housing 9 of the watch module 6, whereby the pressing plate 13 is configured to temporarily fix the second elastic buffer member 12 to the watch module 6.

As shown in FIG. 3, a back cover 20 is attached to the back surface of the watch case 1 via a waterproof packing 19. That is, the back cover 20 is made of a metal such as stainless steel or titanium, and a cylindrical male screw portion 21 is formed to protrude upward on the outer peripheral side of the inner surface (the upper surface in FIG. 2). 1 is attached to the back side of the watch case 1 by being screwed into a female screw portion 22 formed on the lower inner peripheral surface of the watch case 1. In addition, the inner surface of the back cover 20 is subjected to a cutting process,
A piezoelectric element 23 for notifying an alarm sound is bonded to a substantially central portion of the inner surface. As shown in FIGS. 3 and 5, a sliding member 24 to which the protrusion 16 of the holding plate 13 contacts is bonded to the inner surface of the back cover 20 around the piezoelectric element 23 by an adhesive layer 25. The sliding member 24 is made of a metal plate such as stainless steel, and as shown in FIG. 6, is entirely formed in a ring shape substantially the same as the pressing plate 13, and has an upper surface, that is, an opposing surface corresponding to the pressing plate 13. Is, as shown in FIG.
6 is formed.

In such an electronic wristwatch, the second elastic cushioning member 12 is temporarily fixed to the lower surface of the timepiece module 6 by the pressing plate 13, and the timepiece module 6 is placed in the watch case 1 via the first elastic cushioning member 7. The male screw portion 21 of the back cover 20 is screwed into the female screw portion 22 of the watch case 1 in this state, so that the back cover 2
0 is attached by rotating. At this time, the projection 16 of the holding plate 13 comes into contact with the mirror surface 26 of the sliding member 24 adhered to the back cover 20.
6 is reduced as much as possible. Therefore, even if the sliding member 24 rotates together with the back cover 20, the pressing plate 13
The protrusion 16 of the sliding member 24 moves smoothly on the mirror surface 26 of the sliding member 24, and the protrusion 16 of the holding plate 13 does not get caught in the streak unlike the related art. For this reason, even if the back cover 20 is made of a titanium material that is likely to cause streaks by cutting, the back cover 2
Since the rotation of 0 is not transmitted to the holding plate 13, the holding plate 13 can be prevented from rotating with the rotation of the back cover 20, whereby the timepiece module 6 rotates in the watch case 1. The second elastic cushioning member 12 can be satisfactorily pressed and compressed without causing any positional displacement or temporary fixing of the holding plate 13 to the timepiece module 6 by the engaging piece 15. An electronic wrist watch excellent in impact properties can be obtained.

In the first embodiment, the sliding member 24 made of a metal plate such as stainless steel is used as the sliding member. However, the present invention is not limited to this. For example, a silicone sheet is used as the sliding member, and the silicone sheet is bonded. Layer 25
In this case, a structure in which the inner cover 20 is adhered and fixed to the inner surface of the back cover 20 may be used. With the structure using such a silicone sheet as the sliding member, the same operation and effect as in the first embodiment can be obtained.

Next, a second embodiment in which the present invention is applied to an electronic wristwatch will be described with reference to FIG. In addition,
The same parts as those in the first embodiment shown in FIGS. 1 to 6 are denoted by the same reference numerals, and description thereof will be omitted. This electronic watch is
The material and the inner surface treatment of the back cover 30 are changed without using the sliding member 24, and the structure is substantially the same as that of the first embodiment except for this. That is, the back cover 30 is formed of a metal material such as stainless steel that can be mirror-finished.
After cutting the inner surface where the projection 16 abuts, it is formed into a mirror surface 31 as a sliding portion by diamond cutting or buffing. The mirror surface 31 may be formed on the entire inner surface of the back cover 30 as shown in FIG.
It may be formed only in a portion where the projection 16 of the holding plate 13 moves by contact. Also on this back cover 30, a cylindrical male screw part 32 screwed into the female screw part 22 formed on the lower inner peripheral surface of the watch case 1 is formed to protrude upward.

In such an electronic wristwatch, when the back cover 30 is rotated and attached to the back surface of the watch case 1, the projection 16 of the holding plate 13 abuts on the mirror surface 31 of the back cover 30. As a result, the frictional resistance against the protrusion 16 is reduced as much as possible, so that even if the back cover 30 rotates, the protrusion 16 of the holding plate 13 smoothly moves on the mirror surface 31 of the back cover 30 as in the first embodiment. The rotation of the back cover 30 is not transmitted to the holding plate 13. For this reason, the back cover 3
The pressing plate 13 does not rotate with the rotation of 0, the timepiece module 6 does not displace, or the temporary fixing of the pressing plate 13 to the timepiece module 6 by the engaging piece 15 does not come off. Good second elastic buffer member 12
Can be pressed and compressed, and an electronic wrist watch excellent in impact resistance can be obtained. Further, since the mirror surface 31 is formed on the inner surface of the back cover 30, the mirror surface 26 is formed as in the first embodiment.
The need for the sliding member 24 as a separate part having the above is eliminated, so that the number of parts is small, and the assembling work and the parts management are simplified.

Next, a third embodiment in which the present invention is applied to an electronic wristwatch will be described with reference to FIG. Also in this case, the same portions as those of the first embodiment shown in FIGS. 1 to 6 are denoted by the same reference numerals, and description thereof will be omitted. This electronic wristwatch has the same structure as that of the first embodiment except that the sliding member 24 is not used, and a coating layer 33 is formed on the inner surface of the back cover 20 as a sliding portion so that the projection 16 of the holding plate 13 abuts. The coating layer 33 is formed by coating the inner surface of the cut back cover 20 with glass, tephro, or the like, and may be formed on the entire inner surface of the back cover 20 as shown in FIG. It may be formed only in a portion where the thirteen protrusions 16 move in contact with each other.

In such an electronic wristwatch, when the back cover 20 is rotated and attached to the back side of the watch case 1, the projections 16 of the holding plate 13 contact the coating layer 33 of the back cover 20. Projection 1 by 33
6, the protrusion 16 of the holding plate 13 smoothly moves on the coating layer 33 of the back cover 20, even if the back cover 20 rotates, as in the first embodiment. The rotation of the back cover 20 is not transmitted to the holding plate 13. For this reason, even if the back cover 20 is made of a titanium material that is likely to have streaks due to cutting, the holding plate 13 does not rotate with the rotation of the back cover 20,
The second elastic cushioning member 1 can be satisfactorily prevented without causing the timepiece module 6 to be displaced or the temporary fixing of the holding plate 13 to the timepiece module 6 by the engaging pieces 15 being released.
2 can be pressed and compressed, and an electronic wrist watch excellent in impact resistance can be obtained. In addition, since the coating layer 33 is formed on the inner surface of the back cover 20, the number of components is small, as in the second embodiment, and the assembling work and component management are simplified.

In the first to third embodiments, the case where the present invention is applied to an electronic wristwatch as an electronic device is described. However, the present invention is not limited to this. For example, an electronic timepiece such as a travel watch, a pager, a mobile phone, etc. It can be widely applied to other electronic devices.

[0017]

As described above, according to the first aspect of the present invention, when the cover is rotated and attached to the equipment case, even if the cover is rotated, the space between the holding member and the cover is maintained. Since the pressing member is slid by the arranged sliding member, the rotation of the lid is not transmitted to the pressing member, and therefore, the pressing member can be prevented from rotating with the rotation of the lid, and thereby, The elastic buffer can be satisfactorily pressed without the device module rotating in the device case and causing a displacement. According to the fourth aspect of the present invention, similarly to the first aspect of the invention, when the cover is rotated and attached to the device case, even if the cover rotates, the cover facing the pressing member faces the pressing member. Since the pressing member slides due to the sliding portion formed on the surface, the rotation of the lid is not transmitted to the pressing member, so that the pressing member can be prevented from rotating with the rotation of the lid, In addition to being able to satisfactorily press the elastic buffer, especially since the sliding part was formed on the lid,
Compared to the first aspect, the number of parts is smaller, and the assembling work and the parts management are simplified.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment in which the present invention is applied to an electronic watch.

FIG. 2 is an enlarged cross-sectional view of a main part showing a state in which a back cover is attached in the electronic wristwatch of FIG. 1;

FIG. 3 is a cross-sectional view in which main parts are further enlarged in a state where a back cover is attached in FIG. 2;

FIG. 4 is an enlarged plan view of the holding plate of FIG. 2;

FIG. 5 is a sectional view of a main part showing a state in which a sliding member is attached to the back cover of FIG. 2;

FIG. 6 is a plan view of the sliding member of FIG. 5;

FIG. 7 is an enlarged cross-sectional view of a main part of a back cover according to a second embodiment in which the invention is applied to an electronic watch.

FIG. 8 is an enlarged sectional view of a main part of a back cover according to a third embodiment in which the invention is applied to an electronic wristwatch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wristwatch case 6 Watch module 12 Second elastic buffering member 13 Pressing plate 16 Projection 20, 30 Back cover 21 Male screw part 22 Female screw part 24 Sliding member 25 Adhesive layer 26, 31 Mirror surface 33 Coating layer

Claims (8)

[Claims] An equipment case having a threaded portion, a lid screwed to the threaded portion of the equipment case and attached to the equipment case, an equipment module housed in the equipment case, An elastic buffer disposed between the device module and the lid; a pressing member disposed between the elastic buffer and the lid to press the elastic buffer against the device module; An electronic device, comprising: a sliding member disposed between a member and the lid. 2. The electronic apparatus according to claim 1, wherein the sliding member is a metal plate fixed to the lid, and at least a surface facing the pressing member is formed as a mirror surface. . 3. The electronic device according to claim 1, wherein the sliding member is a silicone sheet fixed to the lid. 4. A device case having a screw portion formed therein, a lid screwed to the screw portion of the device case and attached to the device case, a device module housed in the device case, An elastic buffer disposed between the device module and the lid; and a pressing member disposed between the elastic buffer and the lid to press the elastic buffer against the device module, An electronic device, wherein a sliding portion is formed on a surface of the lid facing the holding member. 5. The electronic apparatus according to claim 4, wherein the sliding portion is a mirror surface obtained by polishing the facing surface of the lid. 6. The electronic device according to claim 4, wherein the sliding portion is a coating layer obtained by performing a coating process on the facing surface of the lid. 7. The electronic device according to claim 1, wherein a plurality of projections are provided on a surface of the pressing member facing the lid. 8. The device case is a watch case, the lid is a back cover attached to the back of the watch case, and the device module is a watch module housed in the watch case. The electronic device according to claim 1.