CN113176724B - Shell and clock - Google Patents

Abstract

The invention provides a case capable of preventing breakage of a module caused by impact and a timepiece having the case. The housing is provided with: a lower case (17) which accommodates the timepiece module (7) and has 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 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 an operating head (54) provided at the outer end of the operating shaft (53), wherein the upper case (18) has an impact-preventing portion (57) that abuts against a part of the lower case (17) corresponding to the second operating member (51). Therefore, when the operation head (54) receives an impact from the outside, the impact can be blocked by the impact-proof part (57) of the upper housing (18). Therefore, the operation shaft (53) can be prevented from being pressed into the lower housing (17) due to impact, and breakage of the timepiece module (7) caused by the impact can be prevented.

Description

Shell and clock

Technical Field

The present invention relates to a case for electronic devices such as watches and mobile communication devices, and a timepiece including the case.

Background

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

Prior art literature

Patent literature

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

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

Disclosure of Invention

Problems to be solved by the invention

Such a wristwatch has the following problems: when the operation head is impacted from the outside, the operation head is abutted against the retainer ring to prevent the operation shaft from being pressed into the clock module, but when the operation head is abutted against the retainer ring, the operation shaft is pressed into the clock module and the clock module is broken if the watch case is deformed due to the impact.

The invention provides a case capable of preventing breakage of a module due to impact and a timepiece including the case.

Means for solving the problems

The present invention is a housing, comprising: a first member which accommodates the module and has a through hole; a second member fixed to an upper portion of the first member and having a 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 preventing portion that abuts against a part of the first member corresponding to the operating member.

Effects of the invention

According to the present invention, breakage of 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 as 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 a first exterior sheet of the first exterior member is disassembled in the wristwatch shown in fig. 1.

Fig. 5 is an enlarged perspective view of the wristwatch shown in fig. 4, as seen from the lower surface side, with the second exterior member of the second exterior sheet and the third exterior sheet attached to the first exterior member attached to the upper case portion.

Fig. 6 is an enlarged plan view showing a state in which the second exterior member and the third exterior member 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 shown in fig. 7 and the second exterior sheet and the third exterior sheet of the first exterior member with their front and back surfaces reversed.

Fig. 9 shows a cross section of a second exterior sheet of the first exterior member attached to the second exterior member shown in fig. 6, (a) is an enlarged cross section view in the direction of B-B, and (B) is an enlarged cross section view in the direction of C-C.

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

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

Fig. 12 shows a cross section of a main portion of the wristwatch shown in fig. 1, (a) is an enlarged cross section view in the F-F direction thereof, and (b) is an enlarged cross section view in the G-G direction thereof.

Fig. 13 is an enlarged sectional view of the wristwatch shown in fig. 1 as seen from the H-H direction.

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 showing a main portion of the switch device of the wristwatch shown in fig. 2 in a state in which the locking portion of the operation member is unlocked from the operation head.

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 attachment portions 3 for attaching the band 2 are provided on the 12-point side and the 6-point side of the wristwatch case 1. The switch device 4 is provided on the 3-point side of the wristwatch case 1, and the push-button switches 5 as the switch devices are provided on the 2-point side, 4-point side, 8-point side, and 10-point 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 gasket 6 a. A timepiece module 7 is provided in the wristwatch case 1 through a middle frame 8. The timepiece module 7 includes an upper case 7a and a lower case 7b. A circuit board 9 is provided between the upper case 7a and the lower case 7b.

As shown in fig. 2, a dial 10 and a dividing member 11 are provided on the upper portion of the upper case 7a. The dial 10 is formed into a substantially circular plate shape from a light-transmitting material, and a solar panel 10a is provided on the lower surface of the dial 10. The dividing member 11 is formed in a ring shape, and time characters 11a are provided on the inner peripheral surface at equal intervals. The dividing 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 timepiece movements 12 includes a pointer shaft 12a protruding above the dial 10 and the solar panel 10a, and is configured such that a pointer 12b provided at an upper end portion of the pointer shaft 12a is moved over the dial 10 to indicate information such as display 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 includes 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 synthetic resin having high rigidity, such as a synthetic resin mixed with reinforced plastic, carbon fiber, or glass fiber. In this case, the mounting projections 17a of the belt mounting portion 3 are provided to protrude 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 the vibration plate 14a, and the vibration plate 14a is attached to the bottom inside the lower case 17 by the double-sided tape 14 b. A timepiece module 7 is disposed in the lower case 17 via a middle 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 portion 18a disposed on an upper end surface of a tubular side wall portion of the lower case 17, a second ring portion 18b that abuts an inner peripheral surface of the lower case 17, and a tubular portion 18c provided on the first ring portion 18a and to which the timepiece glass 6 is attached via the gasket 6 a. In this case, the upper case 18 is attached to the upper portion of the lower case 17 with a plurality of screws 18d, with a waterproof ring 19 interposed between the first ring portion 18a and the upper end surface of the lower case 17.

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 and the outer peripheral surface of the cylindrical portion 18c of the upper case 18, and is formed into a substantially annular shape from a decorative metal such as a titanium alloy or an aluminum alloy. The first exterior member 20 is arranged from the upper surface of the second exterior member 21 to the outer periphery of the housing main body 15, and is divided into a plurality in the outer peripheral direction of the housing main body 15.

That is, as shown in fig. 1 to 8, the first exterior member 20 includes a first exterior piece 22 disposed on the outer periphery of the case main body 15 in approximately half of a single side from the 12-point side to the 6-point side via the 9-point side, a second exterior piece 23 disposed so that the tape mounting portion 3 on the 6-point side faces the first exterior piece 22, and a third exterior piece 24 disposed so that the tape mounting portion 3 on the 12-point side faces the first exterior piece 22. The first to third outer sheets 22 to 24 are each formed of a soft synthetic resin such as polyurethane resin.

As shown in fig. 3 to 5, the first exterior sheet 22 includes an exterior body portion 25 corresponding to a portion of the case body 15 from the 8-point side to the 10-point side, a first cover portion 26 corresponding to the 7-point side of the case body 15, and a second cover portion 27 corresponding to the 11-point side of the case body 15. The outer body 25 is disposed from the inner periphery of the second outer member 21 to the lower part of the side wall of the lower case 17 via the upper surface of the second outer member 21 and the side surface of the upper case 18.

As shown in fig. 3 to 5, the exterior body 25 is provided with button insertion holes 25a into which the heads 43 of the push-button switches 5 are inserted, corresponding to the 8-point side and the 10-point side of the housing 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 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 screw 28 is screwed into the first screw hole 17d provided in the upper end portion of the side wall portion of the lower case 17 through the holes of the second outer member 21 and the first ring portion 18a of the upper case 18 from the first screw insertion hole 25b of the outer body portion 25, and the outer body portion 25 and the second outer member 21 are attached to the lower case 17 together with the upper case 18.

As shown in fig. 2 and 3, a second screw insertion hole 25c into which the second screw 29 is inserted is provided in the side of the exterior body 25 corresponding to the 9-point side surface of the housing body 15. The second screw 29 is screwed from a second screw insertion hole 25c of the exterior body 25 into a second screw hole 17e provided in a side surface of a side wall portion of the lower case 17, and thereby the exterior body 25 is attached to the side surface of the lower case 17.

As shown in fig. 3 to 5, the first cover portion 26 of the first exterior sheet 22 is disposed so as to cover the end portion of the case body 15 of the band attachment portion 3 on the 6-point side of the wristwatch case 1 on the 7-point side. As shown in fig. 5, the first cover portion 26 is provided with a first screw mounting hole 26a and a first coupling hole 26b.

In this case, as shown in fig. 10, the mounting protrusion 17a on the 6-point side of the lower case 17 is provided with a main body insertion hole 17b corresponding to the first screw mounting hole 26a of the first cover 26 on the same axis, penetrating 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 screw body 31 to which the screw member 30 is attached is inserted into the body insertion hole 17b. The mounting screw member 30 includes a screw body 31 having female screw portions 31a at both end portions 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 corresponds to the body insertion hole 17b of the mounting protrusion 17a on the same axis, and the male screw 32 is screwed into the female screw portion 31a of the screw body 31 through the first screw mounting hole 26a, whereby the first cover 26 is mounted to the mounting protrusion 17a of the lower case 17.

As shown in fig. 10 and 11, the mounting projection 17a on the 6-point side of the lower case 17 is provided with a main body coupling hole 17c corresponding to the first coupling hole 26b of the first cover 26 on the same axis 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 main body coupling hole 17c. 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 projection 17a, and protrudes to both sides of the mounting projection 17a when inserted into the main body coupling hole 17c.

As a result, as shown in fig. 10 and 11, the pin member 33 is inserted into the main body coupling hole 17c of the mounting protrusion 17a and protrudes to both sides of the mounting protrusion 17a, and the protruding pin member 33 is inserted into the first coupling hole 26b, so that the first cover 26 is coupled and fixed to the end of the mounting protrusion 17a, and tilting with respect to the mounting protrusion 17a can be prevented.

As shown in fig. 3 to 5, the second cover portion 27 of the first exterior sheet 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 27 is provided with a second screw mounting hole 27a and a second coupling hole 27b.

The second cover portion 27 is configured similarly to the first cover portion 26 such that the second screw mounting hole 27a corresponds to the main body insertion hole 17b on the same axis, and the main body insertion hole 17b is provided in the mounting protrusion 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 mounting hole 27a, and the second cover 27 is mounted on the mounting protrusion 17a of the lower case 17.

The second cover portion 27 is configured similarly to the first cover portion 26, in that the second coupling hole 27b corresponds to the main body coupling hole 17c on the same axis, and the main body coupling hole 17c is 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 second cover 27 is coupled to the end of the mounting projection 17a by inserting the pin members 33 inserted into the main body coupling holes 17c of the mounting projection 17a and protruding toward both sides of the mounting projection 17a into the second coupling holes 27b, and tilting with respect to the mounting projection 17a can be prevented.

On the other hand, as shown in fig. 4 to 9, the second exterior piece 23 of the exterior member 16 is attached to the 5-point side of the case main body 15. The second exterior sheet 23 includes a second body 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 35 disposed at the 5-point end of the case body 15 of the band attachment unit 3 on the 6-point side of the wristwatch case 1.

As shown in fig. 6 to 9, the second outer sheet 23 is temporarily fixed by attaching the second body 34 to the substantially annular second outer member 21. In this case, a pair of recess grooves 21a which recess from the inner peripheral side toward the outer peripheral side and locking grooves 21b provided in the outer peripheral portion are provided at the portion of the second outer member 21 to which the second body portion 34 is attached. The second body 34 is provided with a pair of mounting projections 34a inserted into the pair of recess grooves 21a of the second housing member 21 and an engaging projection 34b engaged with the engaging groove 21b of the second housing member 21.

Thus, as shown in fig. 6 to 9, when 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 via the upper surface of the second exterior member 21, the pair of mounting projections 34a of the second body 34 are inserted into the pair of recessed grooves 21a of the second exterior member 21, and the engaging projections 34b of the second body 34 are engaged with the engaging grooves 21b of the second exterior member 21, whereby the second exterior member 21 is temporarily fixed.

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

As shown in fig. 10 and 11, the third cover portion 35 is configured such that the third screw mounting hole 35a corresponds to the main body insertion hole 17b provided in the mounting protrusion 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 portion 31a of the screw main body 31 inserted into the main body insertion hole 17b of the lower case 17 through the third screw attachment hole 35a, and the third cover portion 35 is attached to the attachment protrusion 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 corresponds to the main 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 main body coupling holes 17c of the mounting projections 17a and protruding toward both sides of the mounting projections 17a are correspondingly inserted into the third coupling holes 35b, and the third cover 35 is coupled and fixed to the end portions of the mounting projections 17a, thereby preventing the mounting projections 17a from tilting.

As shown in fig. 5 to 7 and fig. 12 (b), a third screw insertion hole 23a into which a third screw 36 is inserted is provided in the second outer sheet 23 at a boundary between the second main body 34 and the third cover 35. Thereby, the third screw 36 is inserted into the third screw insertion hole 23a from above and screwed into the third screw hole 17e provided in the 5-point upper end portion of the lower case 17, and the second exterior piece 23 is attached to the 5-point upper end portion of the lower case 17.

On the other hand, as shown in fig. 4 to 9, the third exterior piece 24 of the exterior member 16 is attached to the 1-point side portion of the case main body 15. The third exterior sheet 24 includes, like the second exterior sheet 23, a third main body 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 38 disposed at the end of the case main body 15 on the 1-point side of the band attachment portion 3 on the 12-point side of the wristwatch case 1.

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

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

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

The fourth cover portion 38 is configured to correspond to the fourth screw mounting hole 38a on the same axis as the main body insertion hole 17b provided in the mounting protrusion 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, similarly to the third cover portion 35 of the second outer sheet 23. 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 mounting boss 17a through the fourth screw mounting hole 38a, and the fourth cover 38 is mounted on the mounting boss 17a of the lower case 17.

The fourth cover portion 38 is configured to correspond to the fourth coupling hole 38b on the same axis as the main 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, similarly to the third cover portion 35. Thus, the fourth cover portion 38 is coupled and fixed to the end of the mounting projection 17a by inserting the pin member 33 inserted into the main body coupling hole 17c of the mounting projection 17a and protruding to both sides of the mounting projection 17a into the fourth coupling hole 38b, whereby tilting with respect to the mounting projection 17a can be prevented.

In the third exterior sheet 24, similarly to the second exterior sheet 23, a fourth screw insertion hole 24a into which the third screw 36 is inserted is provided at the boundary between the third main body 37 and the fourth cover 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 in the upper end portion on the 1-point side of the lower case 17, and the third exterior 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-button switches 5 of the wristwatch case 1 are provided in different positions and sizes, respectively, but are all of substantially the same structure. That is, the 1-point side push switch 5 among the plurality of push switches 5 includes the first operation 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 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 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 come close to or separate from the inner peripheral surface, so that the first retaining member does not fall out of the lower case 17 from the first through hole 39. 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 switching operation. Further, a plurality of pad grooves 42a are provided on the outer peripheral surface of the shaft 42, to which the first to third pads 44 to 46 are attached.

As shown in fig. 14, the head 43 is formed to have an outer diameter slightly smaller than an inner diameter of the large-diameter hole 39b of the first through hole 39, and a recess 43a in which the first spring member 41 is disposed is provided on an inner end surface of the head 43. The first spring member 41 is a coil spring, and is configured such that one end portion is in elastic contact with the stepped portion of the large-diameter hole portion 39b, and the other end portion is in elastic contact with the inner surface of the concave portion 43a of the head portion 43, thereby biasing the head portion 43 in a direction of pushing the outside of the lower case 17.

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

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

As shown in fig. 14, first to third pads 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 42 at predetermined intervals from the outer end side toward the inner end side on the outer periphery of the shaft 42. The first to third pads 44 to 46 are configured such that, when the shaft portion 42 is inserted into 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 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 abrasion resistance and durability, small permanent deformation due to compression, and excellent sliding properties, for example, nitrile rubber. The third gasket 46 is formed of a material having heat resistance and weather resistance, such as butyl rubber.

Thus, the push button switch 5 is constructed such that the first gasket 44 of fluororubber secures heat resistance and chemical resistance, prevents penetration of liquid such as water, oil, or chemical, the second gasket 45 of nitrile rubber having small permanent deformation due to compression secures abrasion resistance, durability, and sliding property, prevents penetration of water, the third gasket 46 of butyl rubber secures heat resistance and weather resistance, prevents penetration of gas such as water vapor, and prevents mist of the watch glass 6, thereby realizing high-pressure waterproof.

In this case, as shown in fig. 14, the first to third pads 44 to 46 are arranged in this order from the outer end side toward the inner end side of the shaft portion 42 of the first operation member 40, the first pad 44, the second pad 45, and the third pad 46. Therefore, the push button switch 5 is constituted such that the penetration of liquid such as oil and chemical is reliably prevented by the first gasket 44, the penetration of water is reliably prevented by the second gasket 45, and the penetration of gas such as steam is reliably prevented by the third gasket 46, thereby preventing the mist of the watch glass 6, and thus high-pressure waterproof is efficiently achieved.

On the other hand, as shown in fig. 2 and 15, the 3-point side switch device 4 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 outside the lower case 17, and a locking portion 52 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 middle diameter tubular portion 50b inserted into the middle 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 protruding into the lower case 17, and a second retaining member 50d is attached to the protruding inner end portion.

As shown in fig. 2 and 15, the tubular member 50 is provided with a plurality of waterproof gaskets 50e on the outer periphery of the intermediate diameter tubular portion 50 b. Thus, the tubular member 50 is elastically contacted with the inner peripheral surface of the intermediate diameter hole portion of the second through hole 48 by the plurality of waterproof gaskets 50e, thereby realizing the waterproof 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 connected to an outer end portion of the operating shaft 53, a joint 55 connecting the operating shaft 53 and the operating head 54, and a second spring portion 56 biasing the operating head 54 toward the outside of the lower case 17. The operation shaft 53 has an inner end slidably inserted into the timepiece module 7 and an outer end 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 waterproof rings 54d are slidably and elastically contacted with the inner peripheral surface of the cylindrical member 50. Further, a coupling boss 55 and a second spring member 56 are disposed in the cylindrical shaft 54a, and an outer end portion of the operating shaft 53 is inserted. In this case, the outer end of the operation shaft 53 is connected 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 so that, when the operation head 54 is pushed out to a neutral state on the outer side of the lower case 17 by the elastic force of the second spring member 56, the operation head 54 idles, and the rotation of the operation head 54 is not transmitted to the operation shaft 53.

As shown in fig. 2 and 15, when the operation head 54 is further pulled out from the neutral state toward the outside of the lower case 17, the coupling joint 55 is configured to maintain the stopped state without moving even if the cylinder shaft 54a slides, and to engage with the cylinder shaft 54a in the cylinder shaft 54a, thereby transmitting the rotation of the operation head 54 to the operation shaft 53.

As shown in fig. 2 and 15, the lock portion 52 is a screw lock mechanism, and includes a male screw 52a provided on the outer peripheral surface of the large-diameter cylindrical 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 substantially equal to the outer diameter of the large-diameter tube 50c of the tubular member 50.

As a result, as shown in fig. 2 and 15, when the operation head 54 in the neutral state in which the coupling boss 55 is idle is rotated in one direction while being pushed into the lower case 17 against the elastic force of the second spring member 56, 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 female screw 52b of the recess 54c is screwed and locked with the male screw 52a of the large-diameter cylindrical portion 50 c.

As shown in fig. 2 and 15, in the locking portion 52, when the operation head 54 is rotated in a direction opposite to the one direction in a state where the male screw 52a of the large-diameter cylindrical portion 50c and the female screw 52b of the recess 54c are screwed together, the screw joint between the male screw 52a of the large-diameter cylindrical portion 50c and the female screw 52b of the recess 54c is released, and the locking by the male screw 52a and the female screw 52b is released, so that 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 the state is neutral.

As a result, as shown in fig. 2 and 15, in the switch device 4, when the lock portion 52 is in a neutral state in which the lock of the operation head 54 is released and 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, the shaft 54a of the operation head 54 and the coupling joint 55 are not engaged, and therefore, even if the operation head 54 is rotated, the coupling joint 55 is free from rotation with respect to the operation head 54, the operation shaft 53 is not rotated, the timepiece movement 12 of the timepiece module 7 is not operated, and the correction of the time and the like is not performed.

As shown in fig. 2 and 15, in the switch device 4, when the lock portion 52 releases the lock of the operation head 54 and the operation head 54 in the neutral state is pulled out further toward the outside of the lower case 17, the shaft 54a of the operation head 54 is engaged 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 in the timepiece module 7, and the timepiece movement 12 in the timepiece module 7 is operated, whereby correction of the time and the like can be performed.

As shown in fig. 2, 5, and 15, the upper case 18 is provided with an impact preventing portion 57 that abuts against an inner peripheral portion of the lower case 17 corresponding to the switch device 4. That is, the impact prevention portion 57 is configured to protrude from the lower surface of the first annular portion 18a of the upper case 18 corresponding to the second operating member 51 of the switching device 4 and the outer peripheral surface of the second annular portion 18b of the upper case 18, and to abut against the inner peripheral portion of the lower case 17 in the axial direction of the operating 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 from 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. Thus, in the switching device 4, when the operation head 54 of the second operation member 51 receives an impact from the outside, the impact is received by the lower case 17 through the tubular member 50.

Therefore, in this switching 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 impact is blocked from the outside by the impact preventing portion 57 because the inner peripheral portion of the lower case 17 abuts against the impact preventing portion 57 of the metal upper case 18.

As a result, as shown in fig. 2 and 15, the switch device 4 is configured such that the impact is blocked from the outside by the impact prevention portion 57, and the operation shaft 53 of the second operation member 51 is not pushed into the timepiece module 7 by the impact, so that even if the operation head 54 of the second operation member 51 receives the impact from the outside, breakage of the timepiece module 7 due to the operation shaft 53 can be prevented.

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 notch portions 58a provided on the outer peripheral portions of the first ring portion 18a of the upper case 18 on the 12-point side and the 6-point side, respectively, and a pair of protruding portions (not shown) provided on the upper end portions of the side wall portions of the lower case 17 and engaged with the pair of notch portions 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 such that a pair of protrusions (not shown) provided at the upper end portion of the lower case 17 engage with a pair of notch portions 58a provided at the first ring portion 18a of the upper case 18, thereby accurately positioning the upper case with respect to the position in the outer circumferential direction of the lower case 17. In this case, the upper case 18 is configured such that the impact preventing portion 57 of the upper case 18 is disposed so as to correspond to the switching device 4 by positioning the position of the upper case 18 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 where the wristwatch is assembled 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 mounted on the vibration plate 14a, and the vibration plate 14a is attached to the bottom inside the lower case 17 by the double-sided tape 14 b. In this state, the plurality of push switches 5 and the switch device 4 are mounted to the lower case 17.

That is, when the plurality of push switches 5 are mounted on the lower case 17, the first to third pads 44 to 46 are mounted in advance in 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 pad 44, the second pad 45, and the third pad 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 stepped 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 operating member 40. In this state, the head 43 is pressed, the inner end of the shaft 42 is projected 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 retaining member 47 of the shaft portion 42 abuts against the inner peripheral surface of the lower case 17, and the shaft portion 42 does not drop from the lower case 17 to the outside.

At this time, the head 43 is disposed in the large-diameter hole 39b of the first through hole 39 in a state in which the inner end of the head 43 of the push button switch 5 is separated from the step of the large-diameter hole 39b, and the outer end of the head 43 protrudes from the large-diameter hole 39b to the outside of the lower case 17. In this state, the outer peripheral portions of the first to third pads 44 to 46 slidably and elastically contact the small-diameter hole portion 39a of the first through hole 39.

In this state, the first gasket 44 of the fluororubber secures heat resistance and chemical resistance, prevents the penetration of liquids such as oil and chemicals, and the second gasket 45 of the nitrile rubber having small permanent deformation due to compression secures abrasion resistance, durability, and sliding property, prevents the penetration of water, and the third gasket 46 of the butyl rubber secures heat resistance and weather resistance, prevents the penetration of gases such as water vapor, and prevents the penetration of mist of the watch glass 6. Thus, the push button switch 5 realizes high-voltage 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 operation member 40. In this state, the first gasket 44 reliably prevents the penetration of liquids such as oil and chemicals, the second gasket 45 reliably prevents the penetration of water, and the third gasket 46 reliably prevents the penetration of gases such as water vapor, thereby preventing the mist of the watch glass 6. Thereby, high-voltage waterproofing of the push button switch 5 is achieved. In this way, the plurality of push switches 5 are mounted on the 2-point side, 4-point side, 8-point side, and 10-point side of the lower case 17, respectively.

On the other hand, when the switch device 4 is mounted to the lower case 17, first, the tubular member 50 is mounted to the second through hole 48 of the lower case 17. At this time, a plurality of waterproof gaskets 50e are previously attached to the outer peripheral surface of the intermediate diameter tube portion 50b of the tubular member 50. In this state, the tubular member 50 is fitted into the second through hole 48 of the lower case 17 together with the plurality of waterproof gaskets 50e. At this time, the small-diameter cylindrical portion 50a of the cylindrical member 50 is disposed in the small-diameter hole portion of the second through hole 48, the intermediate-diameter cylindrical portion 50b is disposed in the intermediate-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 gaskets 50e are in elastic contact with the inner peripheral surface of the intermediate diameter hole portion of the second through hole 48, and waterproof between the second through hole 48 of the lower case 17 and the tubular member 50 is achieved. At this time, the inner end of the small-diameter tube 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. Thereby, the tubular member 50 is attached to the second through hole 48 without being separated from the second through hole 48.

In this state, the timepiece module 7 is mounted in 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 shaft portions 42 of the plurality of push switches 5.

Then, the second operating member 51 of the switching 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 portion of the operation shaft 53 of the second operation 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 in the second operation member 51, the coupling joint 55 is inserted, and the outer end portion of the operation shaft 53 is inserted.

Thus, the operation shaft 53 is coupled to the cylinder shaft 54a of the operation head 54 via the coupling boss 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. Thus, operating shaft 53 is operatively coupled to timepiece movement 12 of timepiece module 7. Thereby, the switching device 4 is mounted to the lower case 17.

Then, a metal upper case 18 is attached to the synthetic resin lower case 17, and the case body 15 is assembled. At this time, the waterproof ring 19 is disposed in advance at the upper end portion of the tubular side wall portion of the lower case 17. At this time, the dividing 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 gasket 6 a. In this case, the watch glass 6 is fitted into the cylindrical portion 18c of the upper case 18 via the gasket 6a, whereby the watch glass 6 is protected by the upper case 18 having higher rigidity than the lower case 17, and the water resistance of the upper case 18 is ensured.

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 tubular 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 portion 58. Therefore, the impact preventing portion 57 provided in the second ring portion 18b is accurately arranged in correspondence with the switching 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 cylindrical side wall portion and a bottom portion, the opening portion of the cylindrical side wall portion of the lower case 17 is reinforced by the upper case 18 made of metal, so that the rigidity of the entire case main body 15 can be improved.

In this case, the lower case 17 is formed of a synthetic resin, so that the manufacturing operation is simplified, the manufacturing cost is reduced, and the cost is reduced, as compared with the case of forming it of a metal. In this case, the upper case 18 is attached to the lower case 17 with a waterproof ring 19 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. Thus, the waterproofing of the housing main body 15 is achieved by the waterproof ring 19. Thereby, the housing main body 15 is assembled.

In this state, the exterior member 16 is attached to the housing 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 piece 23 is attached to the second exterior member 21, the second exterior piece 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 via the upper surface of the second exterior member 21.

At this time, the pair of mounting projections 34a provided on the second body portion 34 of the second exterior sheet 23 are inserted into the pair of recess grooves 21a of the second exterior member 21, and the engaging projections 34b of the second body portion 34 are engaged with the engaging grooves 21b of the second exterior member 21. Thereby, the second exterior sheet 23 is mounted on the second exterior member 21 and temporarily fixed.

Similarly, when the third exterior piece 24 is attached to the second exterior member 21, the third exterior piece 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 via the upper surface of the second exterior member 21. At this time, the pair of mounting projections 37a provided on the third main body 37 of the third exterior piece 24 are inserted into the pair of recess grooves 21a of the second exterior member 21, and the engaging projections 37b of the third main body 37 are engaged with the engaging grooves 21b of the second exterior member 21. Thereby, the third exterior piece 24 is mounted on the second exterior member 21 and temporarily fixed.

Then, the second exterior member 21 with the second exterior piece 23 and the third exterior piece 24 attached thereto is assembled to the upper case 18 and then to the lower case 17. That is, when the second exterior member 21 is assembled 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 and the outer peripheral surface of the cylindrical portion 18c of the upper case 18.

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

At this time, the third screw mounting hole 35a provided in the third cover portion 35 of the second outer sheet 23 corresponds to the main body insertion hole 17b provided in the 6-point side mounting protrusion 17a of the lower case 17 in the tangential direction with respect to the outer periphery of the lower case 17 on the same axis. At the same time, the third coupling hole 35b provided in the third cover portion 35 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 6-point side mounting protrusion 17 a. In this case, the third screw insertion hole 23a provided at the boundary between the second main body 34 and the third cover 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 exterior sheet 24 corresponds to the main body insertion hole 17b provided in the lower case 17 at the 12-point side along the tangential direction with respect to the outer periphery of the lower case 17. At the same time, the fourth coupling hole 38b provided in the fourth cover portion 38 corresponds to the main body coupling hole 17c of the mounting protrusion 17a on the 12-point side. In this case, the fourth screw insertion hole 24a provided at the boundary between the third main body 37 and the fourth cover 38 corresponds to the third screw hole 17e provided at the upper end portion of the lower case 17 on the 1-point side.

In this case, the pin members 33 are inserted into the main body coupling holes 17c provided in the lower case 17 on the 6-point side and the 12-point side in the tangential direction with respect to the outer periphery of the lower case 17, respectively, and the pin members 33 are protruded to both sides of the main body coupling holes 17 c. Thus, when the third coupling hole 35b of the third cover portion 35 of the second outer sheet 23 corresponds to the main body coupling hole 17c of the 6-point side mounting projection 17a, the pin members 33 protruding from both ends of the main 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 exterior 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 members 33 protruding at both ends of the main body coupling hole 17c are inserted into the fourth coupling hole 38b of the fourth cover portion 38. In this way, when the pin members 33 are inserted into the third coupling holes 35b of the third cover portion 35 and the fourth coupling holes 38b of the fourth cover portion 38, the second exterior member 21 presses the upper case 18 against the lower case 17.

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

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

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

At this time, the first cover portion 26 of the first outer sheet 22 is disposed so as to cover the 7-point end portion of the mounting projection 17a provided on the 6-point side of the lower case 17, and is opposed to the third cover portion 35 of the second outer sheet 23 with the mounting projection 17a interposed therebetween. In this state, the first screw mounting hole 26a of the first cover portion 26 corresponds to the main body insertion hole 17b of the mounting projection 17a on the same axis.

At this time, the first coupling hole 26b of the first cover portion 26 corresponds to the main body coupling hole 17c of the mounting protrusion 17a on the same axis. Then, the pin members 33 inserted into the main body coupling holes 17c of the mounting projections 17a and protruding toward both sides of the main body coupling holes 17c are inserted into the first coupling holes 26b of the first cover 26. Thus, the first cover 26 is coupled to the mounting projection 17a, and tilting of the first cover 26 with respect to the mounting projection 17a can be prevented.

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

At this time, the second coupling hole 27b of the second cover 27 corresponds to the main body coupling hole 17c of the mounting protrusion 17a on the same axis. Then, the pin members 33 inserted into the main body coupling holes 17c of the mounting projections 17a and protruding toward both sides of the main body coupling holes 17c are inserted into the second coupling holes 27b of the second cover portion 27. Thus, the second cover 27 is coupled to the mounting projection 17a, and tilting of the second cover 27 with respect to the mounting projection 17a can be prevented.

In this state, the first exterior member 20 is screwed to the housing main 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 outer body 25 of the first outer 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 outer member 21 and the first ring portion 18a of the upper case 18. Thereby, the exterior body 25 presses the second exterior member 21 and the upper case 18 and is attached to the lower case 17.

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

Further, in this state, the screw body 31 to which the screw member 30 is attached is inserted into the body insertion hole 17b provided to the attachment protrusion 17a of the lower case 17 from the first screw attachment hole 26a provided to the first cover portion 26 of the first exterior sheet 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 the female screw portion 31a of the screw main body 31 inserted into the main body insertion hole 17b of the mounting protrusion 17a, thereby fastening.

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 outer sheet 23 opposed to the first cover portion 26 of the first outer sheet 22, and is screwed into the female screw portion 31a of the screw main body 31 inserted into the main body insertion hole 17b of the mounting projection 17a, thereby being fastened. Thereby, the first cover portion 26 of the first exterior sheet 22 and the third cover portion 35 of the second exterior sheet 23 are attached to both end portions of the attaching projection 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 provided in the mounting protrusion 17a of the lower case 17 from the second screw mounting hole 27a provided in the second cover portion 27 of the first exterior sheet 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 the female screw portion 31a of the screw main body 31 inserted into the main body insertion hole 17b of the mounting protrusion 17a, thereby fastening.

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 outer cover piece 24 facing the second cover portion 27, and is screwed into the female screw portion 31a of the screw main body 31 inserted into the main body insertion hole 17b of the mounting projection 17a, thereby being fastened. Thereby, the second cover portion 27 of the first exterior sheet 22 and the fourth cover portion 38 of the third exterior sheet 24 are attached to both end portions of the attaching projection 17 a.

Thereby, the wristwatch is assembled. In this case, in the wristwatch case 1 of the wristwatch thus assembled, since the exterior member 16 and the case body 15 are coupled and fixed by the pin member 33, the wristwatch case is reduced in size compared to the case where the exterior member 16 and the case body 15 are screwed, and the wristwatch case is easy to disassemble and easy to reassemble and maintain compared to the case where the exterior member 16 and the case body 15 are fixed by an adhesive or a double-sided tape.

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

In this wristwatch, in a normal state, the hands 12b of the timepiece movement 7 are respectively set on the dial 10 to indicate information such as the display time, and the information such as the display time can be seen from the outside through the timepiece glass 6.

In this state, if the plurality of push switches 5 are pushed, the mode of the timepiece is switched. That is, if the head portion 43 of the first operation member 40 is pushed against the elastic force of the first spring member 41, the shaft portion 42 is slidably pushed into 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 switching operation.

In this way, when the head portion 43 of the first operating member 40 is pressed to slide the shaft portion 42 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 in contact with the inner peripheral surface of the small-diameter hole portion 39a of the first through hole 39. Therefore, the high-pressure waterproof between the shaft portion 42 of the first operating member 40 and the small-diameter hole portion 39a of the first through hole 39 is achieved by the first to third gaskets 44 to 46.

That is, in the push-button switch 5, the heat resistance and chemical resistance are ensured by the first gasket 44 of the fluororubber, the penetration of liquid such as oil or chemical is prevented, the abrasion resistance, durability, and sliding property are ensured by the second gasket 45 of the nitrile rubber having small permanent deformation due to compression, the penetration of water is prevented, the heat resistance and weather resistance are ensured by the third gasket 46 of the butyl rubber, the penetration of gas such as water vapor is prevented, and the mist of the watch glass 6 is prevented, whereby high-pressure waterproof is realized.

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 operation member 40. Therefore, the push button switch 5 is reliably prevented from being impregnated with liquid such as oil or chemical by the first gasket 44, reliably prevented from being impregnated with water by the second gasket 45, and reliably prevented from being impregnated with gas such as steam by the third gasket 46, thereby preventing mist of the watch glass 6. Thus, high-voltage waterproofing of the push button switch 5 is realized efficiently, reliably and well.

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 screw 52a of the tubular member 50 and the female screw 52b of the operation head 54 are screwed together, when the operation head 54 is rotated to disengage the female screw 52b from the male screw 52a, the locking by the male screw 52a and the female screw 52b is released.

Then, the operation head 54 is pushed outward of the lower case 17 by the elastic force of the second spring member 56, and is brought into 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 a stopped state and does not move, and the coupling joint 55 is in an idle state with respect to the operation head 54, so that the rotation of the operation head 54 is not transmitted to the operation shaft 53. Therefore, in this neutral state, no correction such as time is performed.

In this neutral state, the operation head 54 is further pulled out toward the outside of the lower case 17. Then, the cylindrical shaft 54a slides, and the coupling joint 55 engages with each other in the cylindrical shaft 54a, and the coupling joint 55 rotates 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 boss 55, and the timepiece movement 12 in the timepiece module 7 is operated. Thus, correction of time and the like is performed.

In the switch device 4, if the operation head 54 is externally impacted while 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 is impacted via the tubular member 50, and the inner peripheral portion of the lower case 17 abuts against the impact-preventing portion 57 provided in the upper case 18 made of metal.

Therefore, even if the operation head 54 receives an impact from the outside, the impact is blocked by the impact preventing portion 57. Accordingly, the operating shaft 53 of the second operating member 51 is not pushed into the timepiece module 7 by the impact, and therefore, even if the operating head 54 of the second operating member 51 is impacted from the outside, breakage of the timepiece module 7 due to the operating shaft 53 can be prevented.

In this case, 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 the inner peripheral portion of the lower case 17 in the axial direction of the operation shaft 53, so that deformation in the axial direction of the operation shaft 53 of the lower case 17, which is lower in rigidity than the upper case 18 due to the impact 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.

In addition, the outer peripheral surface of the lower case 17 is provided so as to protrude outward from the outer peripheral surface of the upper case 18, and when the operation head 54 receives an impact, the lower case 17 receives the impact, and the impact received by the lower case 17 is reliably and satisfactorily blocked by the impact preventing portion 57 of the upper case 18.

In this case, the tubular member 50 into which the operation shaft 53 of the second operation member 51 is slidably inserted is disposed in the second through hole 48 of the lower case 17, so that the second operation 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, operability of the second operating member 51 can be ensured.

Thus, according to the wristwatch case 1, it includes: a lower case 17 as a first member which accommodates the timepiece module 7 and is provided with a second through hole 48; an upper case 18 as a second member, which is fixed to an upper portion of the lower case 17 and has 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, wherein the upper case 18 includes an impact prevention portion 57 abutting against a part of the lower case 17 corresponding to the second operating member 51, so that 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 therefore, 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 on the inner peripheral portion of the lower case 17 in the axial direction of the operation shaft 53, so that deformation of the lower case 17 in the axial direction of the operation shaft 53, which is lower in rigidity than the upper case 18 due to impact received by the operation head 54, can be reliably and satisfactorily suppressed.

In the wristwatch case 1, since the outer peripheral surface of the lower case 17 is provided so as to protrude outward from 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, if the operating head 54 receives an impact, the impact received by the lower case 17 via the tubular member 50 can be reliably and satisfactorily blocked by the impact preventing portion 57 of the upper case 18.

In the wristwatch case 1, since the tubular member 50 into which the operation shaft 53 of the second operation member 51 is slidably inserted is disposed in the second through hole 48 of the lower case 17, the second operation member 51 can be reliably and satisfactorily held by the tubular member 50 even when the lower case 17 is less rigid than the upper case 18, and thus the operability of the second operation member 51 can be improved.

In the wristwatch case 1, since the watch glass 6 as the protective glass is fitted into the upper case 18, the watch glass 6 can be reliably and satisfactorily fitted into the upper case 18 having a higher rigidity than the lower case 17 via the gasket 6a, and the watch glass 6 can be reliably and satisfactorily attached to the upper case 18, the watch glass 6 can be satisfactorily protected by the upper case 18, and the waterproof property of the upper case 18 can be ensured.

Further, in the wristwatch case 1, since the positions of the lower case 17 and the upper case 18 in the outer circumferential direction are regulated by the positioning portion 58, the lower case 17 and the upper case 18 can be accurately positioned by the positioning portion 58 when the upper case 18 is attached to the lower case 17, and the impact preventing portion 57 of the upper case 18 can be accurately arranged in correspondence with the second operating member 51, so that 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 main body coupling hole 17c is formed to linearly penetrate each of the mounting projections 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 main body 15 has been described, but the present invention is not limited to this, and the main body coupling hole 17c may be formed to penetrate the mounting projections 17a so as to curve along the outer periphery of the case main body 15, for example. In this case, the pin member 33 may be bent at the same curvature as that of the main body coupling hole 17c, and the first to fourth coupling holes 26b, 27b, 35b, 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-point side and the 12-point side of the lower case 17, the main body coupling holes 17c are provided so as to penetrate the mounting projections 17a in the tangential direction with respect to the outer periphery of the case main body 15, and the pin members 33 are inserted into the main body coupling holes 17c and protrude to both sides of the mounting projections 17a, but the present invention is not limited thereto, and for example, main body coupling holes may be provided in the non-penetrating state on both sides of each mounting projection 17a, and the first to third exterior sheets 22 to 24 may be independently coupled to each mounting projection 17a of the lower case 17 by the pin members inserted into the main body coupling holes.

That is, in this modification, main body coupling holes may be provided on both sides of the mounting projection 17a, respectively, and pin members may be provided so as to protrude from the main body coupling holes, respectively, and the protruding pin members may be independently 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 cover member 20, respectively, and may be independently inserted into the third coupling holes 35b of the third cover portion 35 of the second cover member 23 and the fourth coupling holes 38b of the fourth cover portion 38 of the third cover member 24, respectively, and may be coupled and fixed.

In the above-described embodiment, the description has been made of the case where the first to third pads 44 to 46 are provided on the outer periphery of the shaft portion 42 of the first operating member 40 of the push button switch 5, but the present invention is not limited to this, and for example, a structure may be adopted in which the first pad 44 is formed of a material having heat resistance and chemical resistance, and the second pad 45 is formed of a material having wear resistance and durability, small permanent deformation due to compression, and excellent sliding property.

The present invention is not limited to this, and for example, a structure may be adopted in which a first liner 44 and a third liner 46 are provided, the first liner 44 being made of a material having heat resistance and chemical resistance, and the third liner 46 being made 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 pad 44, the second pad 45, and the third pad 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 thereto, and may be arranged in any order.

In the above-described embodiment, the case where the present invention is applied to a wristwatch has been described, but the present invention is not necessarily limited to a wristwatch, and can be applied to various watches such as a traveling 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 present invention has been described with reference to the above embodiments, the present invention is not limited thereto, and the invention described in the claims and the equivalent scope thereof are included.

Claims (7)

1. A housing, comprising:

a first member which accommodates the module and has a through hole;

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

an operation member including an operation shaft inserted into the through hole of the first member and protruding into the first member, and an operation head connected to an outer end portion of the operation shaft,

the second member includes an impact-resistant portion that abuts against a portion of the first member corresponding to the operation member,

the entire impact-preventing portion is located in a region corresponding to the operation head portion in a plan view of the operation member as viewed in the operation axis direction,

The first member includes a cylindrical side wall portion,

the second member includes a first ring portion disposed on an upper end surface of a cylindrical side wall portion of the first member, a second ring portion abutting an inner peripheral surface of the first member, and a cylindrical portion provided on the first ring portion,

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.

2. The housing of claim 1, wherein the housing is configured to receive the cartridge,

the outer peripheral surface of the first member is provided to protrude outward from the outer peripheral surface of the second member, and the first member receives an impact received from the outside by the operation member.

3. The housing of claim 1, wherein the housing is configured to receive the cartridge,

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

4. The housing of claim 2, wherein the housing is configured to receive the cartridge,

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

5. The housing of claim 1, wherein the housing is configured to receive the cartridge,

The second member is embedded with a cover glass.

6. The housing of claim 1, wherein the housing is configured to receive the cartridge,

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

7. A timepiece, characterized in that,

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

Images