CN113176724A

CN113176724A - Case and timepiece

Info

Publication number: CN113176724A
Application number: CN202110072418.3A
Authority: CN
Inventors: 平山千
Original assignee: Casio Computer Co Ltd
Current assignee: Casio Computer Co Ltd
Priority date: 2020-01-24
Filing date: 2021-01-20
Publication date: 2021-07-27
Anticipated expiration: 2041-01-20
Also published as: JP2022048271A; JP7020502B2; JP2021117080A; CN113176724B

Abstract

The invention provides a case capable of preventing a module from being damaged by impact and a timepiece having the case. The housing includes: a lower case (17) that houses the timepiece module (7) and is provided with a second through hole (48); an upper case (18) fixed to the upper part of the lower case (17) and having a rigidity higher than that of the lower case (17); and a second operation member (51) having an operation shaft (53) inserted into the second through hole (48) of the lower case (17) and protruding into the lower case (17), and an operation head (54) provided at the outer end of the operation shaft (53), wherein the upper case (18) has a shock-proof section (57) that comes into contact with a portion of the lower case (17) corresponding to the second operation member (51). Therefore, when the operation head (54) receives an impact from the outside, the impact can be blocked by the impact prevention part (57) of the upper housing (18). Therefore, the operating shaft (53) can be prevented from being pressed into the lower case (17) by impact, and the timepiece module (7) can be prevented from being damaged by the impact.

Description

Case and timepiece

Technical Field

The present invention relates to a case for an electronic device such as a wristwatch or a mobile communication device, and a timepiece provided with the case.

Background

For example, as described in patent document 1, a wristwatch is known in which an inner side of a fixed pipe is fitted into a through hole of a wristwatch case, a large-diameter protection pipe and a small-diameter retainer ring are attached to an outer side of the fixed pipe, a shaft portion of an operation head portion of an operation member is inserted into the fixed pipe, and the outer head portion of the operation head portion is disposed in the large-diameter protection pipe so as to be capable of approaching and separating from the small-diameter retainer ring.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2000-329867

In this wristwatch, when the operation head is rotated in a normal state, an outer end portion of an outer head portion of the operation head protrudes from the large-diameter protective tube, and an inner end portion of the outer head portion of the operation head is separated from the small-diameter retainer, an operation shaft of an operation member of a timepiece module connected to a shaft portion of the operation head and inserted into a case of the wristwatch is rotated to correct a time.

Disclosure of Invention

Problems to be solved by the invention

Such a wristwatch has the following problems: when the operation head portion receives an external impact, the operation head portion abuts against the stopper to prevent the operation shaft from being pushed into the timepiece module, but when the operation head portion abuts against the stopper, the operation shaft is pushed into the timepiece module if the wristwatch case is deformed by the impact, and the timepiece module is damaged.

The present invention addresses the problem of providing a case that can prevent damage to a module due to impact, and a timepiece that includes the case.

Means for solving the problems

The present invention is a housing, including: a first member that accommodates the module and is provided with a through hole; a second member fixed to an upper portion of the first member and having higher rigidity than the first member; and an operating member having an operating shaft inserted into the through hole of the first member and protruding into the first member, wherein the second member has an impact prevention portion that comes into contact with a portion of the first member corresponding to the operating member.

Effects of the invention

According to the present invention, damage to the module due to impact can be prevented.

Drawings

Fig. 1 is a front view showing an embodiment of a wristwatch to which the present invention is applied.

Fig. 2 is an enlarged sectional view of the wristwatch shown in fig. 1 viewed from a-a.

Fig. 3 is an exploded perspective view of the wristwatch shown in fig. 1.

Fig. 4 is an enlarged perspective view showing a state in which the first exterior piece of the first exterior member is exploded in the wristwatch shown in fig. 1.

Fig. 5 is an enlarged perspective view of the wristwatch shown in fig. 4, as viewed from the lower surface side, in a state where the second exterior member, to which the second exterior piece of the first exterior member and the third exterior piece are attached, is attached to the upper case portion.

Fig. 6 is an enlarged plan view showing a state where the second exterior sheet and the third exterior sheet of the first exterior member are attached to the second exterior member shown in fig. 5.

Fig. 7 is an enlarged perspective view of the second exterior member and the second exterior sheet and the third exterior sheet of the first exterior member shown in fig. 6, as viewed from the lower surface side.

Fig. 8 is an enlarged perspective view showing the second exterior member and the second exterior sheet and the third exterior sheet of the first exterior member shown in fig. 7 reversed front and back.

Fig. 9 is a cross-section of a second exterior sheet of a first exterior member attached to the second exterior member shown in fig. 6, wherein (a) is an enlarged cross-sectional view taken along line B-B thereof, and (B) is an enlarged cross-sectional view taken along line C-C thereof.

Fig. 10 is an enlarged perspective view of the wristwatch shown in fig. 1, cut away from the view D-D.

Fig. 11 is an enlarged cross-sectional view of the wristwatch shown in fig. 2, as seen from E-E.

Fig. 12 is a cross section of a main portion of the wristwatch shown in fig. 1, wherein (a) is an enlarged cross section viewed from F to F, and (b) is an enlarged cross section viewed from G to G.

Fig. 13 is an enlarged sectional view of the wristwatch shown in fig. 1, viewed from H-H.

Fig. 14 is an enlarged cross-sectional view showing a main part of a push button switch of the wristwatch shown in fig. 13.

Fig. 15 is an enlarged cross-sectional view of a main portion of the switch device of the wristwatch shown in fig. 2, in which the locking of the operating head portion by the locking portion of the operating member has been released.

Detailed Description

An embodiment of a wristwatch to which the present invention is applied will be described below with reference to fig. 1 to 15.

As shown in fig. 1 and 2, the wristwatch includes a wristwatch case 1. Band attaching portions 3 to which the band 2 is attached are provided on the 12 o 'clock side and the 6 o' clock side of the wristwatch case 1. A switch device 4 is provided on the 3 o ' clock side of the wristwatch case 1, and push switches 5 as switch devices are provided on the 2 o ' clock side, the 4 o ' clock side, the 8 o ' clock side, and the 10 o ' clock side of the wristwatch case 1, respectively.

As shown in fig. 1 and 2, a watch glass 6 is provided in an upper opening of the watch case 1 through a spacer 6 a. A timepiece module 7 is provided inside the watch case 1 via an intermediate frame 8. The timepiece module 7 includes an upper case 7a and a lower case 7 b. A circuit board 9 is provided between the upper case 7a and the lower case 7 b.

As shown in fig. 2, a dial 10 and a partition member 11 are provided on the upper portion of the upper case 7 a. The dial 10 is formed of a translucent material into a substantially disc shape, and a solar panel 10a is provided on the lower surface of the dial 10. The partitioning member 11 is formed in a ring shape, and time characters 11a are provided at equal intervals on the inner peripheral surface. The partitioning member 11 is attached to the inner peripheral surface of the wristwatch case 1 in a state of being disposed on the outer peripheral portion of the upper surface of the dial 10.

As shown in fig. 2, a plurality of timepiece movements 12 are provided in the upper case 7a, and a battery 13 is provided in the lower case 7 b. Each of the plurality of timepiece movements 12 includes a pointer shaft 12a protruding above the dial 10 and the solar panel 10a, and is configured to move a pointer 12b provided at an upper end portion of the pointer shaft 12a above the dial 10 to instruct display of information such as time.

As shown in fig. 1 to 4, the wristwatch case 1 includes a case body 15 and an exterior member 16. The housing main body 15 has a lower housing 17 (first member) and an upper housing 18 (second member). The lower case 17 includes a cylindrical side wall portion and a cylindrical bottom portion, and is integrally formed of a highly rigid synthetic resin such as a synthetic resin mixed with reinforced plastic, carbon fibers, and glass fibers. In this case, the attachment projection 17a of the tape attachment portion 3 projects from the side wall portions on the 12-point side and the 6-point side of the lower case 17.

As shown in fig. 2 and 3, a piezoelectric element 14 is provided at the bottom in the lower case 17. That is, the piezoelectric element 14 is provided on a diaphragm 14a, and the diaphragm 14a is attached to the bottom portion in the lower case 17 with a double-sided tape 14 b. A timepiece module 7 is disposed in the lower case 17 via an intermediate frame 8. The upper case 18 is formed in a substantially annular shape from a material having higher rigidity than the lower case 17, for example, a metal such as stainless steel.

That is, as shown in fig. 2 to 5, the upper case 18 includes a first ring 18a disposed on the upper end surface of the cylindrical side wall portion of the lower case 17, a second ring 18b in contact with the inner peripheral surface of the lower case 17, and a cylindrical portion 18c provided on the first ring 18a and to which the watch glass 6 is attached via a spacer 6 a. In this case, the upper case 18 is attached to the upper portion of the lower case 17 with a waterproof ring 19 interposed between the first ring portion 18a and the upper end surface of the lower case 17 by a plurality of screws 18 d.

As shown in fig. 1 to 8, the exterior member 16 includes a first exterior member 20 and a second exterior member 21. The second exterior member 21 is disposed on the upper case 18 so as to cover the upper surface of the first ring portion 18a of the upper case 18 and the outer peripheral surface of the cylindrical portion 18c, and is formed in a substantially annular shape from a decorative metal such as a titanium alloy or an aluminum alloy. The first exterior member 20 is disposed from the upper surface of the second exterior member 21 to the outer periphery of the case main body 15, and is divided into a plurality of portions in the outer peripheral direction of the case main body 15.

That is, as shown in fig. 1 to 8, the first exterior member 20 includes a first exterior sheet 22 disposed on the outer periphery of the case main body 15 and approximately half of the first exterior sheet 22 extending from the 12 o ' clock side to the one side of the 6 o ' clock side through the 9 o ' clock side, a second exterior sheet 23 disposed on the 6 o ' clock side with the tape mounting portion 3 facing the first exterior sheet 22, and a third exterior sheet 24 disposed on the 12 o ' clock side with the tape mounting portion 3 facing the first exterior sheet 22. The first to third exterior sheets 22 to 24 are each formed of a soft synthetic resin such as a urethane resin.

As shown in fig. 3 to 5, the first exterior sheet 22 includes an exterior body portion 25 corresponding to a portion from the 8 o 'clock side to the 10 o' clock side of the case body 15, a first cover portion 26 corresponding to the 7 o 'clock side of the case body 15, and a second cover portion 27 corresponding to the 11 o' clock side of the case body 15. The outer package body 25 has both side portions thereof arranged from the inner peripheral edge of the second outer package member 21 to the lower portion of the side wall portion of the lower case 17 through the upper surface of the second outer package member 21 and the side surface of the upper case 18.

As shown in fig. 3 to 5, the outer case body 25 is provided with button insertion holes 25a into which the head 43 of the push switch 5 is inserted, corresponding to the 8-point side and the 10-point side of the case body 15, respectively. As shown in fig. 4 and 12(a), first screw insertion holes 25b into which first screws 28 are inserted are provided in the upper portion of the exterior main body 25 so as to correspond to the 8-point side and the 10-point side, respectively.

In this case, as shown in fig. 1, 4, and 12(a), the first screws 28 are screwed into the first screw holes 17d provided in the upper end portion of the side wall portion of the lower case 17 through the second outer covering member 21 and the first ring portion 18a of the upper case 18 from the first screw insertion holes 25b of the outer covering body 25, and the outer covering body 25 and the second outer covering member 21 are mounted to the lower case 17 together with the upper case 18.

As shown in fig. 2 and 3, second screw insertion holes 25c into which second screws 29 are inserted are provided in the side portions of the outer case body 25 so as to correspond to the side surfaces of the case body 15 on the 9-point side. The second screws 29 are screwed into second screw holes 17e provided in the side surface of the side wall portion of the lower case 17 through second screw insertion holes 25c of the outer case body 25, thereby attaching the outer case body 25 to the side surface of the lower case 17.

As shown in fig. 3 to 5, the first cover portion 26 of the first cover piece 22 is disposed so as to cover the end portion of the case body 15 with the attachment portion 3 at the 6 o 'clock side of the wristwatch case 1 at the 7 o' clock side. As shown in fig. 5, first cover 26 is provided with first screw mounting holes 26a and first coupling holes 26 b.

In this case, as shown in fig. 10, a body insertion hole 17b that is coaxially aligned with the first screw attachment hole 26a of the first cover portion 26 is provided in the attachment projection 17a on the 6-point side of the lower case 17 so as to penetrate from the 7-point side toward the 5-point side in the outer peripheral direction of the lower case 17, that is, in the tangential direction with respect to the outer periphery of the lower case 17. A screw body 31 to which the screw member 30 is attached is inserted into the body insertion hole 17 b. The attachment screw member 30 includes a screw body 31 having female screw portions 31a at both ends thereof, and two male screws 32 screwed to the respective female screw portions 31a of the screw body 31.

Thus, as shown in fig. 10, in a state where the screw body 31 of the mounting screw member 30 is inserted into the body insertion hole 17b of the mounting protrusion 17a of the lower case 17, the first screw mounting hole 26a and the body insertion hole 17b of the mounting protrusion 17a are coaxially aligned, and the male screw 32 is screwed into the female screw 31a of the screw body 31 through the first screw mounting hole 26a, whereby the first cover portion 26 is mounted to the mounting protrusion 17a of the lower case 17.

As shown in fig. 10 and 11, a main body coupling hole 17c that is coaxially aligned with the first coupling hole 26b of the first cover portion 26 is provided in the mounting projection 17a on the 6-point side of the lower case 17 so as to penetrate from the 7-point side toward the 5-point side in the outer circumferential direction of the lower case 17, that is, in the tangential direction with respect to the outer circumference of the lower case 17. A pin member 33 as a rod member is inserted into the body coupling hole 17 c. The pin member 33 is formed to have a length in the axial direction longer than that of the main body coupling hole 17c of the mounting protrusion 17a, and is configured to protrude to both sides of the mounting protrusion 17a when inserted into the main body coupling hole 17 c.

As a result, as shown in fig. 10 and 11, the pin members 33 are inserted into the body coupling holes 17c of the mounting protrusion 17a and protrude to both sides of the mounting protrusion 17a, and the protruding pin members 33 are correspondingly inserted into the first coupling holes 26b, so that the first cover portion 26 is coupled and fixed to the end of the mounting protrusion 17a, and tilting relative to the mounting protrusion 17a can be prevented.

As shown in fig. 3 to 5, the second cover portion 27 of the first cover piece 22 is disposed so as to cover the end portion of the band attachment portion 3 on the 12-point side of the wristwatch case 1 on the 11-point side of the case main body 15. As shown in fig. 10 and 11, the second cover portion 27 is provided with a second screw mounting hole 27a and a second coupling hole 27 b.

The second cover portion 27 is configured such that, similarly to the first cover portion 26, second screw mounting holes 27a correspond coaxially to the body insertion holes 17b, and the body insertion holes 17b are provided in the mounting projection 17a of the lower case 17 in the outer circumferential direction of the lower case 17, that is, in the tangential direction with respect to the outer circumference of the lower case 17. Thus, the male screw 32 is screwed into the female screw portion 31a of the screw body 31 inserted into the body insertion hole 17b of the lower case 17 through the second screw attachment hole 27a, and the second cover portion 27 is attached to the attachment protrusion 17a of the lower case 17.

In addition, the second cover portion 27 is configured such that, similarly to the first cover portion 26, the second coupling hole 27b and the main body coupling hole 17c are coaxially aligned, and the main body coupling hole 17c is provided in the mounting protrusion 17a in the outer circumferential direction of the lower case 17, that is, in the tangential direction with respect to the outer circumference of the lower case 17. Thus, the second cover portion 27 is coupled and fixed to the end portion of the mounting protrusion 17a by inserting the pin members 33, which are inserted into the body coupling holes 17c of the mounting protrusion 17a and protrude to both sides of the mounting protrusion 17a, into the second coupling holes 27b, and tilting relative to the mounting protrusion 17a can be prevented.

On the other hand, as shown in fig. 4 to 9, the second exterior sheet 23 of the exterior member 16 is attached to a 5-point side portion of the case main body 15. The second exterior sheet 23 includes a second body portion 34 disposed from the inner peripheral edge of the substantially annular second exterior member 21 to the outer peripheral surface of the upper case 18 via the upper surface of the second exterior member 21, and a third cover portion 35 disposed at the end portion on the 5-point side of the case body 15 of the tape attachment portion 3 on the 6-point side of the wristwatch case 1.

As shown in fig. 6 to 9, the second exterior sheet 23 is temporarily fixed by attaching the second body portion 34 to the second exterior member 21 having a substantially ring shape. In this case, a pair of recessed grooves 21a recessed from the inner periphery toward the outer periphery and an engagement groove 21b provided in the outer periphery are provided in a portion where the second exterior member 21 of the second body portion 34 is attached. The second body portion 34 is provided with a pair of attachment projections 34a to be inserted into the pair of recessed grooves 21a of the second exterior member 21 and an engagement projection 34b to be engaged with the engagement groove 21b of the second exterior member 21.

As a result, as shown in fig. 6 to 9, when the second exterior sheet 23 is disposed on the outer peripheral surface of the upper case 18 from the inner peripheral edge of the substantially annular second exterior member 21 via the upper surface of the second exterior member 21, the pair of attachment projections 34a of the second body portion 34 are inserted into the pair of recessed grooves 21a of the second exterior member 21, and the engagement projections 34b of the second body portion 34 are engaged with the locking grooves 21b of the second exterior member 21, so that the second exterior sheet is temporarily fixed to the second exterior member 21.

As shown in fig. 4 to 9, the third cover portion 35 of the second cover piece 23 is disposed so as to cover the side portion on the 5-point side of the attachment protrusion 17a of the lower case 17 corresponding to the strap attachment portion 3 on the 6-point side of the wristwatch case 1, and faces the first cover portion 26 of the first cover piece 22. As shown in fig. 10 and 11, the third cover portion 35 is provided with third screw mounting holes 35a and third coupling holes 35 b.

As shown in fig. 10 and 11, the third cover portion 35 is configured such that the third screw mounting hole 35a is coaxially aligned with a body insertion hole 17b provided in the mounting projection 17a of the lower case 17 along the outer circumferential direction of the lower case 17, that is, in the tangential direction with respect to the outer circumference of the lower case 17. The male screw 32 is screwed into the female screw 31a of the screw body 31 inserted into the body insertion hole 17b of the lower case 17 through the third screw insertion hole 35a, and the third cover portion 35 is attached to the attachment projection 17a of the lower case 17.

As shown in fig. 10 and 11, the third cover portion 35 is configured such that the third coupling hole 35b coaxially corresponds to the body coupling hole 17c provided in the mounting protrusion 17a along the outer circumferential direction of the lower case 17, that is, in the tangential direction with respect to the outer circumference of the lower case 17. Thus, the pin members 33 inserted into the body coupling holes 17c of the mounting protrusion 17a and protruding to both sides of the mounting protrusion 17a are inserted into the third coupling holes 35b, so that the third cover portion 35 is coupled and fixed to the end of the mounting protrusion 17a, thereby preventing the mounting protrusion 17a from being lifted.

As shown in fig. 5 to 7 and 12(b), third screw insertion holes 23a into which third screws 36 are inserted are provided in the second exterior piece 23 at the boundary between the second body portion 34 and the third cover portion 35. Thus, the second exterior piece 23 is attached to the upper end portion of the lower case 17 on the 5-point side by inserting the third screw 36 into the third screw insertion hole 23a from above and screwing it into the third screw hole 17e provided in the upper end portion of the lower case 17 on the 5-point side.

On the other hand, as shown in fig. 4 to 9, the third exterior sheet 24 of the exterior member 16 is attached to a 1-point side portion of the case main body 15. The third exterior sheet 24 includes a third body portion 37 disposed from the inner peripheral edge of the substantially annular second exterior member 21 to the outer peripheral surface of the upper case 18 via the upper surface of the second exterior member 21, and a fourth cover portion 38 disposed at the end portion on the 1-point side of the case body 15 of the tape attachment portion 3 on the 12-point side of the wristwatch case 1, similarly to the second exterior sheet 23.

As shown in fig. 6 to 9, the third exterior sheet 24 is temporarily fixed by being attached to the substantially annular second exterior member 21 by the third body portion 37. In this case, similarly to the second exterior piece 23, a pair of recessed grooves 21a recessed from the inner periphery toward the outer periphery and an engaging groove 21b provided in the outer periphery are provided in a portion where the second exterior member 21 of the third body portion 37 is attached. The third body portion 37 is provided with a pair of attachment projections 37a to be inserted into the pair of recessed grooves 21a of the second exterior member 21 and an engagement projection 37b to be engaged with the engagement groove 21b of the second exterior member 21, similarly to the second exterior piece 23.

Thus, as shown in fig. 6 to 9, when the third exterior sheet 24 is configured similarly to the second exterior sheet 23 and is disposed on the outer peripheral surface of the upper case 18 from the inner peripheral edge of the substantially annular second exterior member 21 via the upper surface of the second exterior member 21, the pair of attachment projections 37a of the third body 37 are inserted into the pair of recessed grooves 21a of the second exterior member 21, and the engagement projections 37b of the third body 37 are engaged with the engagement grooves 21b of the second exterior member 21, so that the third exterior sheet is temporarily fixed to the second exterior member 21.

As shown in fig. 4 to 9, the fourth cover portion 38 of the third outer sheet 24 is disposed so as to cover the side portion of the attachment projection 17a of the lower case 17 at point 1 corresponding to the band attachment portion 3 at point 12 of the watch case 1, and is configured to face the second cover portion 27 of the first outer sheet 22. As shown in fig. 10 and 11, the fourth cover portion 38 is provided with a fourth screw mounting hole 38a and a fourth coupling hole 38 b.

The fourth cover portion 38 is configured such that, similarly to the third cover portion 35 of the second exterior piece 23, the fourth screw mounting holes 38a correspond coaxially to the body insertion holes 17b provided in the mounting projections 17a of the lower case 17 in the outer peripheral direction of the lower case 17, that is, in the tangential direction with respect to the outer periphery of the lower case 17. Thus, the fourth cover portion 38 is attached to the attachment protrusion 17a of the lower case 17 by screwing the male screw 32 to the female screw 31a of the screw body 31 inserted into the body insertion hole 17b of the attachment protrusion 17a through the fourth screw attachment hole 38 a.

Similarly to the third cover portion 35, the fourth cover portion 38 is configured such that the fourth coupling hole 38b coaxially corresponds to the body coupling hole 17c provided in the mounting protrusion 17a in the outer circumferential direction of the lower case 17, i.e., in the tangential direction with respect to the outer circumference of the lower case 17. Thus, the fourth cover portion 38 is coupled and fixed to the end of the mounting protrusion 17a by inserting the pin members 33, which are inserted into the body coupling holes 17c of the mounting protrusion 17a and protrude to both sides of the mounting protrusion 17a, into the fourth coupling holes 38b, thereby preventing the mounting protrusion 17a from being lifted.

Similarly to the second exterior sheet 23, fourth screw insertion holes 24a into which the third screws 36 are inserted are provided in the third exterior sheet 24 at the boundary between the third body portion 37 and the fourth cover portion 38. Thus, the third screw 36 is inserted into the fourth screw insertion hole 24a from above and screwed into the third screw hole 17e provided at the upper end portion on the 1-point side of the lower case 17, whereby the third outer sheet 24 is attached to the upper end portion on the 1-point side of the lower case 17.

As shown in fig. 1, 13, and 14, the plurality of push switches 5 of the wristwatch case 1 are provided at different positions and sizes, but all have substantially the same structure. That is, for example, the push switch 5 on the 1 st point side among the plurality of push switches 5 includes the first operating member 40 and the first spring member 41. The first operating member 40 includes a metal shaft portion 42 slidably inserted into the first through hole 39 of the lower case 17 and a synthetic resin head portion 43 provided at an outer end portion of the shaft portion 42, but the shaft portion 42 and the head portion 43 may be formed of metal.

In this case, as shown in fig. 14, the first through hole 39 of the lower case 17 includes a small-diameter hole portion 39a into which the shaft portion 42 is inserted and a large-diameter hole portion 39b in which the head portion 43 is disposed. The shaft portion 42 is formed to be longer than the axial length of the small-diameter hole portion 39a of the first through hole 39. Thus, when the shaft portion 42 is inserted into the small-diameter hole portion 39a, the inner end portion protrudes into the lower case 17, and the outer end portion protrudes into the large-diameter hole portion 39b of the first through hole 39.

As shown in fig. 14, the shaft portion 42 is configured such that a first retaining member 47 such as an E-ring is attached to an inner end portion protruding into the lower case 17, and the first retaining member 47 is brought into contact with the inner peripheral surface of the lower case 17 so as to be able to approach to and separate from the first through hole 39 so as not to fall out of the lower case 17. The shaft portion 42 is configured such that when the head portion 43 is pushed in, the inner end portion presses the contact portion 7c of the timepiece module 7 to perform an opening and closing operation. Further, a plurality of pad grooves 42a for mounting the first to third pads 44 to 46 are provided on the outer peripheral surface of the shaft portion 42.

As shown in fig. 14, the head portion 43 is formed such that the outer diameter thereof is slightly smaller than the inner diameter of the large diameter hole portion 39b of the first through hole 39, and a recess portion 43a in which the first spring member 41 is disposed is provided on the inner end surface of the head portion 43. The first spring member 41 is a coil spring, and has one end portion elastically contacting the stepped portion of the large-diameter hole portion 39b and the other end portion elastically contacting the inner surface of the recess 43a of the head portion 43, thereby biasing the head portion 43 in a direction of pushing outward the outer portion of the lower case 17.

Thus, as shown in fig. 14, when the head portion 43 is pushed outward by the elastic force of the first spring member 41 and the first stopper member 47 of the shaft portion 42 is brought into contact with the inner peripheral surface of the lower case 17, the push switch 5 is configured such that the outer end portion of the head portion 43 protrudes outward from the large-diameter hole portion 39b of the first through-hole 39 in a state where the inner end portion of the head portion 43 is disposed in the large-diameter hole portion 39b of the first through-hole 39 by being separated from the stepped portion of the large-diameter hole portion 39 b.

As shown in fig. 14, in the push switch 5, when the head portion 43 is pushed in against the elastic force of the first spring member 41 and the inner end portion of the head portion 43 is brought close to or into contact with the stepped portion of the large diameter hole portion 39b, the first spring member 41 is compressed and arranged in the recessed portion 43a of the head portion 43, the first stopper member 47 of the shaft portion 42 is separated from the inner peripheral surface of the lower case 17 and protrudes into the lower case 17, and the inner end portion of the protruding shaft portion 42 presses the contact portion 7c of the timepiece module 7 to perform a switching operation.

As shown in fig. 14, first to third spacers 44 to 46 are attached to the shaft portion 42 of the push switch 5. That is, the first to third pads 44 to 46 are disposed in the pad grooves 42a of the shaft portion 42 at predetermined intervals from the outer end side toward the inner end side of the outer periphery of the shaft portion 42. Further, when the shaft portion 42 is inserted into the small-diameter hole portion 39a of the first through hole 39, the first to third pads 44 to 46 are configured such that the outer peripheral portions of the first to third pads 44 to 46 slidably contact the inner peripheral surface of the small-diameter hole portion 39a of the first through hole 39.

In this case, the first gasket 44 is formed of a material having heat resistance and chemical resistance, for example, fluororubber. The second gasket 45 is formed of a material having wear resistance and durability, small permanent deformation due to compression, and excellent sliding properties, such as nitrile rubber. The third gasket 46 is formed of a material having heat resistance and weather resistance, such as butyl rubber.

Accordingly, the push switch 5 is configured to prevent water, oil, chemicals, and other liquids from entering by securing heat resistance and chemical resistance with the first gasket 44 of the fluorine rubber, to prevent water from entering by securing abrasion resistance, durability, and slidability with the second gasket 45 of the nitrile rubber having a small permanent deformation due to compression, to prevent water from entering, and to prevent gas such as water vapor from entering by securing heat resistance and weather resistance with the third gasket 46 of the butyl rubber, and to prevent fogging of the watch glass 6, thereby achieving high-pressure waterproofing.

In this case, as shown in fig. 14, the first to third spacers 44 to 46 are arranged in this order from the outer end side to the inner end side of the shaft portion 42 of the first operating member 40, as the first spacer 44, the second spacer 45, and the third spacer 46. Therefore, the push switch 5 is configured to prevent the entry of liquid such as oil and chemicals by the first gasket 44, to prevent the entry of water by the second gasket 45, and to prevent the entry of gas such as water vapor by the third gasket 46, thereby preventing the fogging of the watch glass 6, and thus to achieve high-pressure waterproofing with high efficiency.

On the other hand, as shown in fig. 2 and 15, the switching device 4 on the 3 o' clock side of the wristwatch case 1 includes a tubular member 50 fitted into the second through hole 48 of the lower case 17, a second operating member 51 inserted into the tubular member 50 and protruding to the outside of the lower case 17, and a lock portion 52 for locking the second operating member 51.

As shown in fig. 2 and 15, the tubular member 50 includes a small-diameter tubular portion 50a inserted into the small-diameter hole portion of the second through hole 48 of the lower case 17, a medium-diameter tubular portion 50b inserted into the medium-diameter hole portion of the second through hole 48, and a large-diameter tubular portion 50c inserted into the large-diameter hole portion of the second through hole 48, and these are made of metal such as stainless steel. In this case, the tubular member 50 has an inner end portion of the small diameter tubular portion 50a projecting into the lower case 17, and a second retaining member 50d attached to the projecting inner end portion.

As shown in fig. 2 and 15, the cylindrical member 50 has a plurality of waterproof packings 50e on the outer periphery of the intermediate diameter cylindrical portion 50 b. Thus, the cylindrical member 50 is elastically contacted with the inner peripheral surface of the middle diameter hole portion of the second through hole 48 by the plurality of waterproof packing 50e, thereby achieving waterproofing with the second through hole 48 of the lower case 17.

As shown in fig. 2 and 15, the second operating member 51 includes an operating shaft 53 as a stem, an operating head 54 coupled to an outer end of the operating shaft 53, a coupling joint 55 coupling the operating shaft 53 and the operating head 54, and a second spring portion 56 biasing the operating head 54 outward of the lower case 17. The operating shaft 53 has an inner end portion slidably inserted into the timepiece module 7 and an outer end portion slidably disposed in the tubular member 50.

As shown in fig. 2 and 15, the operation head 54 includes a cylindrical shaft 54a slidably inserted into the intermediate diameter cylindrical portion 50b of the cylindrical member 50, and an outer head 54b provided at an outer end portion of the cylindrical shaft 54 a. A plurality of waterproof rings 54d are provided on the outer periphery of the cylindrical shaft 54a, and the plurality of waterproof rings 54d are in slidable elastic contact with the inner peripheral surface of the cylindrical member 50. Further, a connecting node 55 and a second spring member 56 are disposed in the cylindrical shaft 54a, and an outer end portion of the operation shaft 53 is inserted. In this case, the outer end of the operating shaft 53 is coupled to the coupling joint 55.

As shown in fig. 2 and 15, the coupling joint 55 is slidably disposed in the cylindrical shaft 54a, and is configured to rotate idly relative to the operation head 54 and not transmit the rotation of the operation head 54 to the operation shaft 53 in a neutral state in which the operation head 54 is pushed outward to the outside of the lower case 17 by the elastic force of the second spring member 56.

As shown in fig. 2 and 15, when the operation head 54 is further pulled out to the outside of the lower case 17 from the neutral state, the coupling joint 55 is configured to engage with the cylindrical shaft 54a inside the cylindrical shaft 54a and transmit the rotation of the operation head 54 to the operation shaft 53 while maintaining the stopped state and not moving even if the cylindrical shaft 54a slides.

As shown in fig. 2 and 15, the locking portion 52 is a screw locking mechanism, and includes a male screw 52a provided on the outer peripheral surface of the large diameter tube portion 50c of the tubular member 50 and a female screw 52b provided on the inner peripheral surface of the recess 54c in the outer head portion 54b of the operation head portion 54. In this case, the inner diameter of the recess 54c provided in the outer head 54b of the operation head 54 is formed to be approximately equal to the outer diameter of the large diameter tube 50c of the tubular member 50.

Thus, as shown in fig. 2 and 15, when the operation head 54 in the neutral state in which the connecting node 55 is idling is rotated in one direction while being pushed into the lower case 17 against the elastic force of the second spring member 56, the locking portion 52 is configured such that the large diameter cylindrical portion 50c of the cylindrical member 50 is pushed into the recess 54c of the outer head 54b of the operation head, and the internal thread 52b of the recess 54c is screwed to the external thread 52a of the large diameter cylindrical portion 50c to be locked.

As shown in fig. 2 and 15, when the operation head 54 is rotated in a direction opposite to one direction in a state where the male thread 52a of the large diameter cylindrical portion 50c and the female thread 52b of the recess 54c are screwed, the locking portion 52 is configured such that the male thread 52a of the large diameter cylindrical portion 50c and the female thread 52b of the recess 54c are disengaged from each other, the locking portion is unlocked by the male thread 52a and the female thread 52b, and the operation head 54 is pushed outward of the lower housing 17 by the elastic force of the second spring member 56, and is in a neutral state.

Thus, as shown in fig. 2 and 15, in the switch device 4, in the neutral state in which the lock of the operation head 54 by the lock portion 52 is released and the operation head 54 is pushed outward of the lower case 17 by the elastic force of the second spring member 56, the barrel shaft 54a of the operation head 54 and the coupling joint 55 are not engaged with each other, and therefore, even if the operation head 54 is rotated, the coupling joint 55 idles with respect to the operation head 54, the operation shaft 53 does not rotate, the movement 12 of the timepiece module 7 is not operated, and the time or the like is not corrected.

As shown in fig. 2 and 15, in this switch device 4, when the lock of the operation head 54 by the lock portion 52 is released and the operation head 54 in the neutral state is further pulled out to the outside of the lower case 17, the cylindrical shaft 54a of the operation head 54 engages with the coupling joint 55, and therefore the coupling joint 55 rotates with the rotation of the operation head 54, the operation shaft 53 rotates within the timepiece module 7, and the timepiece movement 12 in the timepiece module 7 is operated, whereby the time and the like can be corrected.

As shown in fig. 2, 5, and 15, the upper case 18 is provided with a shock-proof portion 57 that abuts against an inner peripheral portion that is a part of the lower case 17 corresponding to the switch device 4. That is, the impact prevention portion 57 is provided to protrude from the lower surface of the first ring portion 18a of the upper case 18 and the outer peripheral surface of the second ring portion 18b of the upper case 18 corresponding to the second operation member 51 of the switch device 4, and is configured to abut against the inner peripheral portion of the lower case 17 in the axial direction of the operation shaft 53.

In this case, as shown in fig. 2 and 15, the outer peripheral portion of the lower case 17 is provided to protrude outward beyond the outer peripheral surface of the upper case 18, and the second operation member 51 is configured to be inserted into the tubular member 50 fitted into the second through hole 48 of the lower case 17. Thus, when the operation head 54 of the second operation member 51 receives an impact from the outside, the switch device 4 is configured such that the impact is received by the lower case 17 via the tubular member 50.

Therefore, in this switch device, as shown in fig. 2 and 15, even if the operation head 54 of the second operation member 51 receives an impact from the outside, the synthetic resin lower case 17 is deformed by the impact, and the inner peripheral portion of the lower case 17 abuts against the impact prevention portion 57 of the metal upper case 18, so that the impact is blocked from the outside by the impact prevention portion 57.

Thus, as shown in fig. 2 and 15, the switch device 4 is configured such that the operation shaft 53 of the second operation member 51 is not pushed into the timepiece module 7 by an impact due to the impact being received from the outside by the impact prevention portion 57, and therefore, even if the operation head 54 of the second operation member 51 receives an impact from the outside, the timepiece module 7 can be prevented from being damaged by the operation shaft 53.

In this case, as shown in fig. 5, the upper case 18 is configured to be positioned on the lower case 17 by the positioning portion 58. That is, the positioning portion 58 includes a pair of notches 58a provided on the outer peripheral portions of the first ring portion 18a of the upper case 18 on the 12 o 'clock side and the 6 o' clock side, respectively, and a pair of protrusions (not shown) provided on the upper end portion of the side wall portion of the lower case 17 and engaged with the pair of notches 58a of the upper case 18.

As a result, as shown in fig. 2, 5, and 15, when the first ring portion 18a is disposed at the upper end portion of the side wall portion of the lower case 17, the upper case 18 is configured to be accurately positioned with respect to the position in the outer circumferential direction of the lower case 17 by engaging a pair of protrusions (not shown) provided at the upper end portion of the lower case 17 with a pair of notches 58a provided at the first ring portion 18a of the upper case 18. In this case, the upper case 18 is configured such that the impact prevention portion 57 of the upper case 18 is disposed in correspondence with the switch device 4 by positioning the position with respect to the lower case 17 by the positioning portion 58.

Next, the operation of such a wristwatch will be described.

First, a case of assembling the wristwatch will be described. In this case, the piezoelectric element 14 is mounted in the lower case 17. At this time, the piezoelectric element 14 is attached to the diaphragm 14a, and the diaphragm 14a is attached to the bottom portion in the lower case 17 with the double-sided tape 14 b. In this state, the plurality of push switches 5 and the switch device 4 are mounted on the lower case 17.

That is, when the plurality of push switches 5 are attached to the lower case 17, the first to third pads 44 to 46 are attached to the plurality of pad grooves 42a provided on the outer periphery of the shaft portions 42 of the first operating members 40, respectively. At this time, the first spacer 44, the second spacer 45, and the third spacer 46 are attached in this order from the outer end side toward the inner end side of the shaft portion 42. In this state, the first spring member 41 is disposed on the outer periphery of the shaft portion 42 of the first operation member 40, and the shaft portion 42 is inserted into the first through hole 39 of the lower case 17 from the outside.

Then, the first spring member 41 is disposed between the step portion of the large-diameter hole portion 39b of the first through hole 39 and the inner surface of the recess 43a in the head portion 43 of the first operation member 40. In this state, the head 43 is pressed to project the inner end of the shaft 42 into the lower case 17, and the first retaining member 47 is attached to the inner end of the projected shaft 42. In this state, the head portion 43 is pushed outward by the elastic force of the first spring member 41, the first stopper member 47 of the shaft portion 42 abuts against the inner peripheral surface of the lower case 17, and the shaft portion 42 is not detached from the lower case 17 to the outside.

At this time, in a state where the inner end portion of the head portion 43 of the push switch 5 is separated from the stepped portion of the large diameter hole portion 39b, the head portion 43 is disposed in the large diameter hole portion 39b of the first through hole 39, and the outer end portion of the head portion 43 protrudes from the inside of the large diameter hole portion 39b to the outside of the lower case 17. In this state, the outer peripheral portions of the first to third gaskets 44 to 46 are in slidable elastic contact with the small-diameter hole portion 39a of the first through hole 39.

In this state, the first gasket 44 of the fluororubber ensures heat resistance and chemical resistance to prevent the ingress of liquid such as oil and chemicals, the second gasket 45 of the nitrile rubber having a small permanent deformation due to compression ensures abrasion resistance, durability and slidability to prevent the ingress of water, and the third gasket 46 of the butyl rubber ensures heat resistance and weather resistance to prevent the ingress of gas such as water vapor to prevent fogging of the watch glass 6. Thus, the push switch 5 realizes high-pressure waterproofing.

In this case, the plurality of pads 44 to 46 are arranged in the order of the first pad 44, the second pad 45, and the third pad 46 from the outer end side toward the inner end side of the shaft portion 42 of the first operating member 40. In this state, the first packing 44 reliably prevents the entry of liquid such as oil and chemicals, the second packing 45 reliably prevents the entry of water, and the third packing 46 reliably prevents the entry of gas such as water vapor, thereby preventing the fogging of the watch glass 6. Thereby, high-pressure waterproofing of the push switch 5 is achieved. In this way, the plurality of push switches 5 are attached to the lower case 17 at the 2 o 'clock side, the 4 o' clock side, the 8 o 'clock side, and the 10 o' clock side, respectively.

On the other hand, when the switch device 4 is attached to the lower case 17, first, the tubular member 50 is attached to the second through hole 48 of the lower case 17. At this time, a plurality of waterproof packings 50e are attached to the outer peripheral surface of the intermediate diameter cylindrical portion 50b of the cylindrical member 50 in advance. In this state, the cylindrical member 50 is fitted into the second through hole 48 of the lower case 17 together with the plurality of waterproof packings 50 e. At this time, the small-diameter cylindrical portion 50a of the tubular member 50 is disposed in the small-diameter hole portion of the second through hole 48, the middle-diameter cylindrical portion 50b is disposed in the middle-diameter hole portion of the second through hole 48, and the large-diameter cylindrical portion 50c is disposed in the large-diameter hole portion of the second through hole 48.

In this state, the plurality of waterproof packing 50e elastically contacts the inner peripheral surface of the middle diameter hole portion of the second through hole 48, and water is prevented between the second through hole 48 of the lower case 17 and the tubular member 50. At this time, an inner end portion of the small-diameter cylindrical portion 50a of the tubular member 50 protrudes into the lower case 17, and the second retaining member 50d is attached to the protruding inner end portion. Thereby, the tubular member 50 is attached to the second through hole 48 without coming out of the second through hole 48.

In this state, the timepiece module 7 is loaded into the lower case 17 from above. At this time, the timepiece module 7 is assembled in advance, the dial 10 is disposed on the upper portion of the timepiece module 7 together with the solar panel 10a, and the middle frame 8 is attached to the outer periphery of the timepiece module 7. In this state, the timepiece module 7 is disposed in the lower case 17 together with the middle frame 8, and the plurality of contact portions 7c of the timepiece module 7 are made to correspond to the inner end portions of the respective shaft portions 42 of the plurality of push switches 5.

Then, the second operating member 51 of the switch device 4 is attached to the tubular member 50, and the tubular member 50 is attached to the lower case 17. At this time, the coupling joint 55 is coupled to the outer end of the operating shaft 53 of the second operating member 51 in advance. In this state, the second spring member 56 is inserted into the cylindrical shaft 54a of the operation head 54 provided on the second operation member 51, the coupling joint 55 is inserted, and the outer end of the operation shaft 53 is inserted.

Thus, the operation shaft 53 is coupled to the cylindrical shaft 54a of the operation head 54 via the coupling node 55. In this state, the operating shaft 53 is inserted into the tubular member 50 from the outside of the lower case 17, and is inserted into the timepiece module 7 in the lower case 17. Operating shaft 53 is then operatively coupled to timepiece movement 12 of timepiece module 7. Thereby, the switch device 4 is mounted on the lower case 17.

Thereafter, the metal upper case 18 is attached to the synthetic resin lower case 17, and the case body 15 is assembled. At this time, a waterproof ring 19 is disposed in advance at the upper end of the cylindrical side wall portion of the lower case 17. At this time, the partition member 11 is disposed in the cylindrical portion 18c of the upper case 18 in advance, and the watch glass 6 is attached together with the spacer 6 a. In this case, the watch glass 6 is fitted into the cylindrical portion 18c of the upper case 18 via the packing 6a, so that the watch glass 6 is protected by the upper case 18 having higher rigidity than the lower case 17, and the waterproof property of the upper case 18 is secured.

In this state, when the upper case 18 is attached to the lower case 17, the first ring portion 18a of the upper case 18 is disposed at the upper end portion of the cylindrical side wall portion of the lower case 17, and the second ring portion 18b of the upper case 18 is disposed so as to correspond to the inner surface of the side wall portion of the lower case 17. At this time, the upper case 18 and the lower case 17 are accurately positioned by the positioning portions 58. Therefore, the shock-proof portion 57 provided in the second ring portion 18b is accurately arranged in correspondence with the switch device 4 attached to the lower case 17.

Then, the first ring portion 18a of the upper case 18 is attached to the upper end portion of the cylindrical side wall portion of the lower case 17 by a plurality of screws 18 d. In this case, even if the lower case 17 is formed of synthetic resin, the strength of the entire case main body 15 can be ensured by the upper case 18. That is, even if the lower case 17 has a structure having a cylindrical side wall portion and a bottom portion, the rigidity of the entire case main body 15 can be improved because the opening portion of the cylindrical side wall portion of the lower case 17 is reinforced by the upper case 18 made of metal.

In this case, since lower case 17 is made of synthetic resin, the manufacturing operation is simplified, the manufacturing cost is reduced, and the cost is reduced as compared with the case where it is made of metal. In this case, the waterproof ring 19 is interposed between the first ring portion 18a of the upper case 18 and the upper end portion of the side wall portion of the lower case 17, and the upper case 18 is attached to the lower case 17. Thus, waterproofing of the case body 15 is achieved by the waterproof ring 19. Thereby, the case main body 15 is assembled.

In this state, the exterior member 16 is attached to the case main body 15. At this time, the exterior member 16 is assembled in advance. That is, the second exterior sheet 23 and the third exterior sheet 24 of the first exterior member 20 are attached to the second exterior member 21. In this case, when the second exterior sheet 23 is attached to the second exterior member 21, the second exterior sheet 23 is disposed from the inner peripheral edge of the substantially annular second exterior member 21 to the outer peripheral surface of the upper case 18 through the upper surface of the second exterior member 21.

At this time, the pair of attachment projections 34a provided on the second body portion 34 of the second exterior sheet 23 are inserted into the pair of recessed grooves 21a of the second exterior member 21, and the engagement projections 34b of the second body portion 34 are engaged with the engagement grooves 21b of the second exterior member 21. Thereby, the second exterior sheet 23 is attached to the second exterior member 21 and temporarily fixed.

Similarly, when the third exterior sheet 24 is attached to the second exterior member 21, the third exterior sheet 24 is disposed from the inner peripheral edge of the substantially annular second exterior member 21 to the outer peripheral surface of the upper case 18 through the upper surface of the second exterior member 21. At this time, the pair of attachment projections 37a provided on the third body portion 37 of the third exterior piece 24 are inserted into the pair of recessed grooves 21a of the second exterior member 21, and the engagement projections 37b of the third body portion 37 are engaged with the engagement grooves 21b of the second exterior member 21. Thus, the third exterior sheet 24 is attached to the second exterior member 21 and temporarily fixed.

Then, the second exterior member 21 to which the second exterior sheet 23 and the third exterior sheet 24 are attached is attached to the upper case 18 and then attached to the lower case 17. That is, when the second exterior member 21 is attached to the upper case 18, the second exterior member 21 is disposed on the upper case 18 in a state where the second exterior member 21 covers the upper surface of the first ring portion 18a of the upper case 18 and the outer peripheral surface of the cylindrical portion 18 c.

In this case, third cover portion 35 of second exterior sheet 23 attached to second exterior member 21 corresponds to the side portion of lower case 17 on the 5-point side of attachment projection 17a provided on the 6-point side, and covers the side portion of attachment projection 17a on the 5-point side. Similarly, fourth cover portion 38 of third exterior sheet 24 attached to second exterior member 21 corresponds to the side portion of lower case 17 at point 1 of attachment projection 17a provided at point 12, and covers the side portion of attachment projection 17a at point 1.

At this time, the third screw mounting holes 35a provided in the third cover portions 35 of the second exterior piece 23 correspond coaxially to the body insertion holes 17b provided in the tangential direction with respect to the outer periphery of the lower case 17 at the mounting protrusions 17a provided on the 6 o' clock side of the lower case 17. At the same time, the third coupling hole 35b provided in the third cover portion 35 and the main body coupling hole 17c provided in the mounting protrusion 17a on the 6 o' clock side in the tangential direction with respect to the outer periphery of the lower case 17 are coaxially aligned. At this time, the third screw insertion hole 23a provided at the boundary between the second body portion 34 and the third cover portion 35 corresponds to the third screw hole 17e provided at the upper end portion of the lower case 17 on the 5-point side.

Similarly, the fourth screw mounting hole 38a provided in the fourth cover portion 38 of the third outer attachment piece 24 corresponds coaxially to the body insertion hole 17b provided in the tangential direction with respect to the outer periphery of the lower case 17 at the mounting projection 17a provided on the 12 o' clock side of the lower case 17. At the same time, the fourth coupling hole 38b provided in the fourth cover portion 38 and the main body coupling hole 17c of the attachment protrusion 17a on the 12-point side correspond coaxially. At this time, the fourth screw insertion hole 24a provided at the boundary between the third body portion 37 and the fourth cover portion 38 corresponds to the third screw hole 17e provided at the upper end portion of the lower case 17 on the 1 st point side.

In this case, the pin members 33 are inserted into the body coupling holes 17c provided in the tangential direction with respect to the outer periphery of the lower case 17 in advance in the respective mounting protrusions 17a provided on the 6 o 'clock side and the 12 o' clock side of the lower case 17, and the respective pin members 33 are projected to both sides of the respective body coupling holes 17 c. Thus, when the third coupling hole 35b of the third cover portion 35 of the second exterior piece 23 corresponds to the body coupling hole 17c of the mounting protrusion 17a on the 6 o' clock side, the pin members 33 protruding at both ends of the body coupling hole 17c are inserted into the third coupling hole 35b of the third cover portion 35.

Similarly, when the fourth coupling hole 38b of the fourth cover portion 38 of the third outer sheet 24 corresponds to the main body coupling hole 17c provided in the tangential direction with respect to the outer periphery of the lower case 17 at the mounting protrusion 17a on the 12-point side, the pin member 33 protruding at both ends of the main body coupling hole 17c is inserted into the fourth coupling hole 38b of the fourth cover portion 38. When each pin member 33 is inserted into third coupling hole 35b of third cover portion 35 and fourth coupling hole 38b of fourth cover portion 38 in this manner, second outer covering member 21 presses upper case 18 against lower case 17.

In this state, the third screws 36 are inserted into the third screw insertion holes 23a of the second exterior sheet 23 from above, and screwed into and fastened to the third screw holes 17e provided in the upper end portion of the lower case 17 on the 5-point side. Thereby, the second exterior sheet 23 is attached to the lower case 17 while pressing the second exterior member 21 and the upper case 18. Similarly, the third screw 36 is inserted into the fourth screw insertion hole 24a of the third exterior piece 24 from above, and is screwed into and fastened to the third screw hole 17e provided at the upper end portion of the lower case 17 on the 1 st point side. Thus, the third exterior sheet 24 is attached to the lower case 17 while pressing the second exterior member 21 and the upper case 18.

Then, the first exterior sheet 22 of the first exterior member 20 is attached to the side surface of the case main body 15 from the 12 o ' clock side to the 6 o ' clock side through the 9 o ' clock side. At this time, the outer case body 25 of the first outer sheet 22 is aligned with the side surface of the case body 15 from the 8 o 'clock side to the 10 o' clock side. At the same time, the first cover portion 26 of the first exterior sheet 22 is made to correspond to the 7-point-side end portion of the mounting protrusion 17a provided on the 6-point side of the lower case 17, and the second cover portion 27 of the first exterior sheet 22 is made to correspond to the 11-point-side end portion of the mounting protrusion 17a provided on the 12-point side of the lower case 17.

At this time, the head portions 43 of the push switches 5 provided on the 8-point side and the 10-point side of the case main body 15 are inserted into the push-button insertion holes 25a of the outer case main body 25 provided in the first outer sheet 22, and the second screw insertion holes 25c provided in the outer case main body 25 correspond to the second screw holes 17c provided in the side wall portion of the lower case 17. At this time, the first screw insertion holes 25b provided in the upper portion of the outer package body 25 are inserted through the second outer package member 21 and the first ring 18a of the upper case 18, and correspond to the first screw holes 17d provided in the upper end portion of the lower case 17.

In this case, the first cover portion 26 of the first exterior sheet 22 is disposed so as to cover the end portion of the lower case 17 on the 7-point side of the mounting protrusion 17a provided on the 6-point side, and faces the third cover portion 35 of the second exterior sheet 23 across the mounting protrusion 17 a. In this state, the first screw mounting hole 26a of the first cover portion 26 and the body insertion hole 17b of the mounting protrusion 17a correspond on the same axis.

In this case, the first coupling hole 26b of the first cover portion 26 and the body coupling hole 17c of the attachment protrusion 17a correspond to each other on the same axis. Then, the pin members 33 inserted into the body coupling holes 17c of the mounting protrusions 17a and protruding to both sides of the body coupling holes 17c are inserted into the first coupling holes 26b of the first cover portions 26. Thus, first cover portion 26 is coupled and fixed to mounting protrusion 17a, and first cover portion 26 is prevented from tilting relative to mounting protrusion 17 a.

Similarly, the second cover portion 27 of the first exterior piece 22 is disposed so as to cover the end portion of the lower case 17 on the 11-point side of the attachment projection portion 17a provided on the 12-point side, and faces the fourth cover portion 38 of the third exterior piece 24 across the attachment projection portion 17 a. In this state, the second screw mounting hole 27a of the second cover portion 27 corresponds to the body insertion hole 17b of the mounting protrusion 17a on the same axis.

At this time, the second coupling hole 27b of the second cover portion 27 and the main body coupling hole 17c of the mounting protrusion 17a correspond to each other on the same axis. Then, the pin members 33 inserted into the body coupling holes 17c of the mounting protrusions 17a and protruding to both sides of the body coupling holes 17c are inserted into the second coupling holes 27b of the second cover portion 27. Thus, the second cover portion 27 is coupled and fixed to the mounting protrusion 17a, and the second cover portion 27 is prevented from being lifted up with respect to the mounting protrusion 17 a.

In this state, the first exterior member 20 is screwed to the case body 15. At this time, the first screws 28 are inserted into the first screw insertion holes 25b provided in the upper portion of the exterior body portion 25 of the first exterior sheet 22 from above, and the first screws 28 are screwed into the first screw holes 17d provided in the upper end portion of the lower case 17 through the second exterior member 21 and the first ring portion 18a of the upper case 18. Thereby, the outer package body 25 is attached to the lower case 17 while pressing the second outer package member 21 and the upper case 18.

In this state, the second screw 29 is inserted from the outside side into the second screw insertion hole 25c provided in the side portion of the exterior body portion 25, and the second screw 29 is screwed into and fastened to the second screw hole 17c provided in the side wall portion of the lower case 17. Thus, the outer case body 25 of the first outer sheet 22 is attached to the lower case 17.

Further, in this state, the screw body 31 of the mounting screw member 30 is inserted into the body insertion hole 17b of the mounting protrusion 17a provided in the lower case 17 from the first screw mounting hole 26a provided in the first cover portion 26 of the first exterior piece 22. Then, the male screw 32 of the mounting screw member 30 is inserted into the first screw mounting hole 26a of the first cover portion 26, and screwed into and fastened to the female screw 31a of the screw body 31 inserted into the body insertion hole 17b of the mounting protrusion 17 a.

At this time, the male screw 32 of the mounting screw member 30 is inserted into the third screw mounting hole 35a of the third cover portion 35 of the second cover portion 23 facing the first cover portion 26 of the first cover portion 22, and is screwed and fastened to the female screw 31a of the screw body 31 inserted into the body insertion hole 17b of the mounting protrusion 17 a. Thus, the first cover portions 26 of the first exterior piece 22 and the third cover portions 35 of the second exterior piece 23 are attached to both end portions of the attachment protrusion 17a of the lower case 17.

Similarly, the screw body 31 of the mounting screw member 30 is inserted into the body insertion hole 17b of the mounting protrusion 17a provided in the lower case 17 from the second screw mounting hole 27a of the second cover portion 27 provided in the first outer cover 22. Then, the male screw 32 of the mounting screw member 30 is inserted into the second screw mounting hole 27a of the second cover portion 27, and screwed into and fastened to the female screw 31a of the screw body 31 inserted into the body insertion hole 17b of the mounting protrusion 17 a.

At this time, the male screw 32 of the mounting screw member 30 is inserted into the fourth screw mounting hole 38a of the fourth cover portion 38 of the third cover portion 24 facing the second cover portion 27, and screwed into and fastened to the female screw 31a of the screw body 31 inserted into the body insertion hole 17b of the mounting protrusion 17 a. Thus, the second cover portions 27 of the first outer sheet 22 and the fourth cover portions 38 of the third outer sheet 24 are attached to both end portions of the attachment protrusion 17 a.

Thereby, the wristwatch is assembled. In this case, in the wristwatch case 1 of the wristwatch thus assembled, the exterior member 16 and the case body 15 are coupled and fixed by the pin member 33, and therefore, the wristwatch case is more compact than the wristwatch case in which the exterior member 16 and the case body 15 are screwed together, and further, the wristwatch case is easier to disassemble and assemble and easier to maintain than the wristwatch case in which the exterior member 16 and the case body 15 are fixed by an adhesive or a double-sided tape.

Next, a case of using this wristwatch will be described.

In this wristwatch, in a normal state, the plurality of timepiece movements 12 of the timepiece module 7 move the hands 12b over the dial 10 to instruct and display information such as time, and the information such as time displayed by the instruction can be seen from the outside through the timepiece glass 6.

In this state, if the plurality of push switches 5 are pushed, the timepiece mode is switched. That is, if the head portion 43 of the first operation member 40 is pressed against the elastic force of the first spring member 41, the shaft portion 42 is pushed in slidably in the small-diameter hole portion 39a of the first through hole 39. Then, the inner end portion of the shaft portion 42 is pushed into the lower case 17, and presses the contact portion 7c of the timepiece module 7 to perform an opening and closing operation.

Thus, when the head portion 43 of the first operation member 40 is pressed and the shaft portion 42 slides in the small-diameter hole portion 39a of the first through hole 39, the outer peripheral portions of the first to third pads 44 to 46 provided on the outer periphery of the shaft portion 42 slide in a state of being elastically contacted to the inner peripheral surface of the small-diameter hole portion 39a of the first through hole 39. Therefore, the first to third gaskets 44 to 46 provide high-pressure water-proof between the shaft portion 42 of the first operating member 40 and the small-diameter hole portion 39a of the first through hole 39.

That is, in the push switch 5, the first gasket 44 of the fluorine rubber ensures heat resistance and chemical resistance to prevent the intrusion of liquid such as oil and chemicals, the second gasket 45 of the nitrile rubber having small permanent deformation due to compression ensures abrasion resistance, durability and slidability to prevent the intrusion of water, and the third gasket 46 of the butyl rubber ensures heat resistance and weather resistance to prevent the intrusion of gas such as water vapor to prevent fogging of the watch glass 6, thereby achieving high-pressure waterproofing.

In this case, the plurality of pads 44 to 46 are arranged in the order of the first pad 44, the second pad 45, and the third pad 46 from the outer end side toward the inner end side of the shaft portion 42 of the first operating member 40. Therefore, in the push switch 5, the first spacer 44 reliably prevents the entry of liquid such as oil and chemicals, the second spacer 45 reliably prevents the entry of water, and the third spacer 46 reliably prevents the entry of gas such as water vapor, thereby preventing the fogging of the watch glass 6. This effectively, reliably and satisfactorily prevents the push switch 5 from being exposed to high pressure water.

On the other hand, when the operation switch device 4 is operated to correct the time or the like, first, the lock of the second operation member 51 by the lock portion 52 is released. That is, in a locked state in which the male thread 52a of the tubular member 50 and the female thread 52b of the operation head 54 are screwed together, when the operation head 54 is rotated to disengage the female thread 52b from the male thread 52a, the locking by the male thread 52a and the female thread 52b is released.

Then, the operation head 54 is pushed outward toward the outside of the lower case 17 by the elastic force of the second spring member 56, and becomes a neutral state. At this time, even if the cylindrical shaft 54a of the operation head 54 slides, the coupling joint 55 is kept in the stopped state and does not move, and the coupling joint 55 is in a state of idling with respect to the operation head 54, and therefore, the rotation of the operation head 54 is not transmitted to the operation shaft 53. Therefore, in this neutral state, the time and the like are not corrected.

In this neutral state, the operation head 54 is further drawn out toward the outside of the lower case 17. Then, the cylindrical shaft 54a slides, the coupling joints 55 engage with each other in the cylindrical shaft 54a, and the coupling joints 55 rotate with the rotation of the operation head 54. In this state, when the operation head 54 is rotated, the operation shaft 53 is rotated by the coupling 55, and the timepiece movement 12 in the timepiece module 7 is operated. This corrects the time and the like.

In the switch device 4, if the operation head 54 receives an impact from the outside in a state where the operation head 54 is pushed in and the operation head 54 is locked to the tubular member 50 by the locking portion 52, the lower case 17 receives the impact via the tubular member 50, and the inner peripheral portion of the lower case 17 abuts against the impact prevention portion 57 provided in the metal upper case 18.

Therefore, even if the operation head 54 receives an impact from the outside, the impact is blocked by the impact prevention portion 57. Thus, the operation shaft 53 of the second operation member 51 is not pushed into the timepiece module 7 by an impact, and therefore, even if the operation head 54 of the second operation member 51 receives an impact from the outside, the timepiece module 7 can be prevented from being damaged by the operation shaft 53.

In this case, since the shock-proof portion 57 is provided on the lower surface of the upper case 18 corresponding to the second operation member 51 and abuts against the inner peripheral portion of the lower case 17 in the axial direction of the operation shaft 53, deformation in the axial direction of the operation shaft 53 of the lower case 17 having lower rigidity than the upper case 18 due to the shock received by the operation head 54 can be suppressed. Therefore, the operating shaft 53 is not pushed into the timepiece module 7 by the impact.

Further, the outer peripheral surface of lower case 17 is provided to protrude outward beyond the outer peripheral surface of upper case 18, and when operation head 54 receives an impact, lower case 17 receives the impact, and the impact received by lower case 17 is reliably and favorably blocked by impact prevention portion 57 of upper case 18.

In this case, the tubular member 50 into which the operating shaft 53 of the second operating member 51 is slidably inserted is disposed in the second through hole 48 of the lower case 17, so that the second operating member 51 can be reliably and satisfactorily held by the tubular member 50 even if the lower case 17 has lower rigidity than the upper case 18. Therefore, the operability of the second operating member 51 can be ensured.

As described above, the wristwatch case 1 includes: a lower case 17 as a first member that houses the timepiece module 7 and is provided with a second through hole 48; an upper case 18 as a second member fixed to an upper portion of the lower case 17 and having higher rigidity than the lower case 17; and a second operating member 51 having an operating shaft 53 inserted into the second through hole 48 of the lower case 17 and protruding into the lower case 17, and the upper case 18 having a striking prevention portion 57 coming into contact with a portion of the lower case 17 corresponding to the second operating member 51, whereby breakage of the timepiece module 7 due to impact can be prevented.

That is, in this wristwatch case 1, when the operation head 54 receives an impact from the outside, the impact can be blocked by the impact prevention portion 57 provided in the upper case 18 having a higher rigidity than the lower case 17, so that deformation of the lower case 17 having a lower rigidity than the upper case 18 due to the impact received by the operation head 54 can be suppressed, and thus the operation shaft 53 protruding into the lower case 17 can be prevented from being pushed into the lower case 17 due to the impact, and breakage of the timepiece module 7 due to the impact can be prevented.

In this case, in the wristwatch case 1, the impact prevention portion 57 is provided on the lower surface of the upper case 18 corresponding to the second operation member 51 and abuts against the inner peripheral portion of the lower case 17 in the axial direction of the operation shaft 53, and thus deformation of the lower case 17 in the axial direction of the operation shaft 53, which has lower rigidity than the upper case 18 due to the impact received by the operation head 54, can be reliably and satisfactorily suppressed.

In the wristwatch case 1, the outer peripheral surface of the lower case 17 is provided to protrude outward beyond the outer peripheral surface of the upper case 18, and the second operating member 51 is inserted into the tubular member 50 fitted into the second through hole 48 of the lower case 17, so that if the operating head 54 receives an impact, the impact received by the lower case 17 through the tubular member 50 can be reliably and satisfactorily blocked by the impact prevention portion 57 of the upper case 18.

In the wristwatch case 1, the tubular member 50 into which the operating shaft 53 of the second operating member 51 is slidably inserted is disposed in the second through hole 48 of the lower case 17, so that even if the lower case 17 has lower rigidity than the upper case 18, the second operating member 51 can be reliably and satisfactorily held by the tubular member 50, and thus the operability of the second operating member 51 can be improved.

In addition, in the watch case 1, the watch glass 6 as a protective glass is fitted into the upper case 18, and the watch glass 6 can be reliably and favorably fitted into the upper case 18 having a higher rigidity than the lower case 17 via the spacer 6a, whereby the watch glass 6 can be reliably and favorably attached to the upper case 18, and therefore the watch glass 6 can be favorably protected by the upper case 18, and the waterproof property of the upper case 18 can be ensured.

Further, in the wristwatch case 1, the positions of the lower case 17 and the upper case 18 in the peripheral direction are regulated by the positioning portions 58, so that the lower case 17 and the upper case 18 can be accurately positioned by the positioning portions 58 when the upper case 18 is attached to the lower case 17, whereby the impact prevention portions 57 of the upper case 18 can be accurately arranged to correspond to the second operation members 51, and therefore the upper case 18 can be attached to the lower case 17 with high accuracy and reliability.

In the above-described embodiment, the case where the body coupling hole 17c is linearly passed through the mounting protrusions 17a on the 6-point side and the 12-point side of the lower case 17 in the tangential direction with respect to the outer periphery of the case body 15 has been described, but the present invention is not limited to this, and the body coupling hole 17c may be passed through the mounting protrusions 17a so as to be curved along the outer periphery of the case body 15. In this case, the pin member 33 may be bent at the same curvature as that of the body coupling hole 17c, and the first to

fourth coupling holes

26b, 27b, 35b, and 38b of the first to fourth cover portions of the first to third outer sheets 22 to 24 may be similarly bent.

In the above-described embodiment, the mounting projections 17a with the mounting portions 3 are provided on the 6 o 'clock side and the 12 o' clock side of the lower case 17, the body coupling holes 17c are provided in the mounting projections 17a so as to pass through in the tangential direction with respect to the outer periphery of the case body 15, and the pin members 33 are inserted into the body coupling holes 17c and projected to both sides of the mounting projections 17a, but the present invention is not limited to this, and for example, the body coupling holes may be provided in both side portions of each mounting projection 17a so as not to pass through, and the first to third exterior pieces 22 to 24 may be independently coupled to each mounting projection 17a of the lower case 17 by the pin members inserted into these body coupling holes.

That is, in this modification, body coupling holes are provided on both sides of the mounting projection 17a, pin members are provided in these body coupling holes so as to project, and these projecting pin members are inserted into the first coupling holes 26b and 27b of the first cover portion 22 and the

second cover portions

26 and 27 of the first exterior member 20 and are coupled and fixed independently of each other, and are inserted into the third coupling hole 35b of the third cover portion 35 of the second exterior member 23 and the fourth coupling hole 38b of the fourth cover portion 38 of the third exterior member 24 and are coupled and fixed independently of each other.

In the above-described embodiment, the first to third spacers 44 to 46 are provided on the outer periphery of the shaft portion 42 of the first operating member 40 of the push switch 5, but the present invention is not limited to this, and for example, a structure may be adopted in which the first spacer 44 is formed of a material having heat resistance and chemical resistance and the second spacer 45 is formed of a material having abrasion resistance and durability, and having little permanent deformation due to compression and excellent sliding properties.

The present invention is not limited to this, and for example, a structure may be adopted in which the first gasket 44 is formed of a material having heat resistance and chemical resistance, and the third gasket 46 is formed of a material having heat resistance and weather resistance.

In addition, the present invention is not limited thereto as long as the first gasket 44 is formed of a material having at least chemical resistance and the third gasket 46 is formed of a material having at least weather resistance.

In the above-described embodiment, the first spacer 44, the second spacer 45, and the third spacer 46 are arranged in this order from the outer end side toward the inner end side of the shaft portion 42 of the first operating member 40, but the present invention is not limited to this, and may be arranged in any order.

In the above-described embodiments, the description has been made on the case of being applied to a wristwatch, but the present invention is not necessarily applied to a wristwatch and can be applied to various timepieces such as a travel wristwatch, an alarm clock, a desk clock, and a wall clock. The present invention is not necessarily limited to a timepiece, and can be applied to electronic devices such as a mobile terminal and a mobile communication device.

While the embodiments of the present invention have been described, the present invention is not limited thereto, and includes the inventions described in the claims and their equivalents.

Claims

1. A housing is characterized by comprising:

a first member that accommodates the module and is provided with a through hole;

a second member fixed to an upper portion of the first member and having higher rigidity than the first member; and

an operating member having an operating shaft inserted into the through hole of the first member and protruding into the first member,

the second member includes an impact prevention portion that comes into contact with a portion of the first member corresponding to the operation member.

2. The housing of claim 1,

the impact prevention portion is provided on a lower surface of the second member corresponding to the operation member, and abuts against an inner peripheral portion of the first member in an axial direction of the operation shaft.

3. The housing according to claim 1 or 2,

the outer peripheral surface of the first member is provided so as to protrude outward beyond the outer peripheral surface of the second member, and the first member receives an impact from the outside of the operating member.

4. The housing according to any one of claims 1 to 3,

a tubular member into which the operation shaft of the operation member is slidably inserted is disposed in the through hole of the first member.

5. The housing according to any one of claims 1 to 4,

the second member has a cover glass embedded therein.

6. The housing according to any one of claims 1 to 5,

the positions of the first member and the second member in the outer circumferential direction are regulated by a positioning portion.

7. A timepiece, characterized in that it comprises, in a case,

a housing according to any one of claims 1 to 6.