JP2015031622A - Switch device and watch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch device capable of successfully protecting an operation member by a simple structure and to provide a watch provided with the same.SOLUTION: A switch device comprises: a wrist watch case 1 having a through hole 7; an operation member 8 having an operation shaft 9 which is inserted into the through hole 7 of the wrist watch case 1 and an operation head 10 which is provided at an end of the operation shaft 9 and projects to the outside of the wrist watch case 1; and a guide protector 14 which is provided in the wrist watch case 1, and movably holds the operation head 10. Consequently, by a simple structure in which the wrist watch case 1 is only provided with the guide protector 14 which movably holds the operation head 10 of the operation member 8, displacement of the operation head 10 in a direction orthogonal to its axial direction can be prevented by the guide protector 14 even when the operation head 10 of the operation member 8 receives an impact from outside, thereby, curve deformation and breakage of the operation shaft 9 of the operation member 8 due to the impact can be certainly prevented.

Description

  The present invention relates to a switch device used in an electronic device such as a wristwatch and a timepiece including the switch device.

  For example, as described in Patent Document 1, a wristwatch is known that includes a switch device that performs time adjustment by operating a clock module in a wristwatch case with an operation member such as a crown. .

JP 2012-163340 A

  The operation member of such a switch device has an operation shaft portion inserted into the through hole of the watch case, and an operation head provided on the outer end portion of the operation shaft portion and positioned outside the watch case. ing. The switch device also includes a protective member that protects the operating head located outside the watch case.

  This protective member is disposed across a pair of protective projections provided on the wristwatch case located near both sides of the operation head and the respective distal ends of the pair of protection projections so as to cover the outer end surface of the operation head. A guard part for covering and an attachment shaft for rotatably attaching one end part of the guard part to the tip part of one protective projection part are provided.

  In this switch device, when operating the operating head of the operating member, the guard portion is rotated about the mounting shaft provided on one of the pair of protective projections to open the outer end surface of the operating head. In this state, the switch is operated by operating the operation head.

  In such a switch device, the structure is complicated because the outer end surface of the operation head is opened by rotating the guard portion around the mounting shaft provided on one of the pair of protective projections. There is a problem that the opening / closing operation of the guard part is troublesome, and there is also a problem that the guard part gets in the way when the outer end face of the operation head is opened.

  The problem to be solved by the present invention is to provide a switch device capable of satisfactorily protecting an operation member with a simple structure and a timepiece including the same.

  The present invention includes a case having a through hole, a shaft portion inserted into the through hole of the case, an operation member having a head portion provided at an end portion of the shaft portion and projecting to the outside of the case, And a guide protection unit that is provided to the case and holds the head portion movably along the axial direction of the shaft portion.

  According to this invention, even if the head of the operating member receives an impact from the outside with a simple structure in which the guide protecting portion for holding the head of the operating member so as to be movable is provided on the case, It is possible to prevent the head from being displaced in a direction perpendicular to the axial direction by the guide protector, which can reliably prevent bending deformation and breakage of the shaft part of the operating member due to impact. It can be reliably and well protected.

1 is an enlarged side view showing a first embodiment in which the present invention is applied to a wristwatch. It is an expanded sectional view of the principal part in the AA arrow of the wristwatch shown in FIG. It is an expanded sectional view of the principal part in the BB arrow of the wristwatch shown in FIG. It is the expanded sectional view of the principal part which showed the 1st modification in 1st Embodiment of this invention. It is an expanded sectional view of the important section showing a 2nd embodiment which applied this invention to a wristwatch. It is an expanded sectional view of the important section showing the 2nd modification in a 2nd embodiment of this invention.

(First embodiment)
A first embodiment in which the present invention is applied to a wristwatch will be described below with reference to FIGS.
The wristwatch includes a wristwatch case 1 as shown in FIGS. The wristwatch case 1 has a case body 2 and a bezel 3. The case body 2 is formed of a hard synthetic resin, and has a configuration in which a metal reinforcing member 2a is embedded in the synthetic resin. The bezel 3 is formed of a soft synthetic resin such as urethane resin, and is provided on the outer peripheral surface of the case body 2 so as to cover it.

  As shown in FIG. 2, a watch glass 4 is attached to the upper opening of the watch case 1, that is, the upper opening of the case body 2. Further, a back cover (not shown) is attached to the lower part of the watch case 1, that is, the lower part of the case body 2. Further, a watch module 5 is accommodated in the wristwatch case 1, that is, in the case body 2. The timepiece module 5 incorporates various parts (not shown) necessary for a timepiece function such as a circuit board.

  Further, as shown in FIGS. 1 to 3, a plurality of switch devices 6 are provided on the side of the wristwatch case 1. The switch device 6 is a push button switch, and includes an operation member 8 that is slidably inserted into a through hole 7 provided in the watch case 1. In this case, the through-hole 7 has a small-diameter hole 7a provided in the case body 2 of the watch case 1 and a large-diameter hole 7b provided in the bezel 3 of the watch case 1, and these are formed in steps. ing.

  As shown in FIG. 2, the operation member 8 is provided on the operation shaft portion 9 slidably inserted into the through hole 7 of the watch case 1 and the outer end portion of the operation shaft portion 9. It has the operation head 10 which protrudes outside, and these are formed integrally. The operation shaft portion 9 has an inner end projecting into the case main body 2 of the watch case 1 and an outer end portion having a length positioned within the bezel 3 of the watch case 1.

  In this case, as shown in FIG. 2, the operation shaft portion 9 is provided with a retaining member 11 such as an E-ring at its inner end, so that the retaining member 11 can be brought into contact with and separated from the inner surface of the case body 2. By being in contact with the wristwatch case 1, the watch case 1 is configured not to come out to the outside. Further, the operation shaft portion 9 has a plurality of waterproof rings 12 attached to the outer peripheral surface thereof, and the plurality of waterproof rings 12 are configured to slide in a state of being pressed against the inner surface of the small diameter hole 7a of the case body 2. ing.

  As shown in FIG. 2, the operation head 10 is formed in a substantially disk shape that is sufficiently larger than the outer diameter of the operation shaft portion 9 and smaller than the inner diameter of the large-diameter hole 7 b of the bezel 3. The operation shaft portion 9 is integrally formed on the inner end surface of the operation head portion 10 with the outer end portion of the operation shaft portion 9 positioned at the center thereof. Further, the operation member 8 includes a spring member 13 that urges the operation head 10 in a direction of pushing the operation head 10 toward the outside of the watch case 1.

  As shown in FIG. 2, the spring member 13 is a coil spring and is disposed on the outer periphery of the operation shaft portion 9 positioned between the case main body 2 and the operation head 10 of the watch case 1. The spring member 13 has an inner end portion disposed on a counterbore portion 2b provided on the outer surface of the case body 2 and an outer end portion disposed on a counterbore portion 10a provided on the inner end surface of the operation head 10. In this state, the operation head 10 is configured to be urged in the direction of pushing out toward the outside of the watch case 1.

  As a result, as shown in FIG. 2, the operation head 8 is pushed out toward the outside of the wristwatch case 1 by the spring force of the spring member 13 in a normal state, and the inner end of the operation shaft portion 9. The retaining member 11 is configured to abut against the inner surface of the case body 2 of the watch case 1. In this case, the operation member 8 has its inner end portion of the operation shaft portion 9 in contact with or approaching a switch contact plate (not shown) provided on the timepiece module 5 in the watch case 1 to turn off the switch contact plate. It is configured to be in a state.

  In addition, as shown in FIG. 2, when the operation head portion 10 is pushed against the spring force of the spring member 13, the operation member 8 moves inside the small diameter hole 7 a of the case body 2. By sliding, the inner end portion of the operation shaft portion 9 is configured to protrude into the case body 2. In this case, the operation member 8 is configured such that the inner end portion of the operation shaft portion 9 presses a switch contact plate (not shown) provided in the timepiece module 5 to perform a switch operation.

  By the way, as shown in FIG. 2, between the operation head 10 of the operation member 8 and the bezel 3, a guide protection unit 14 that holds the operation head 10 movably along the axial direction of the operation shaft 9. Is arranged. The guide protector 14 is formed in a cylindrical shape whose outer diameter is substantially the same as the inner diameter of the large-diameter hole 7 b of the bezel 3 and whose inner diameter is substantially the same as the outer diameter of the operation head 10. The guide protector 14 is formed integrally with the case body 2 in a state of protruding from the outer surface of the case body 2.

  In this case, as shown in FIG. 2, the guide protector 14 has an axial length that is substantially the same as the axial length of the operation head 10. Thereby, when the operation head 10 is pushed out of the watch case 1 by the spring force of the spring member 13, the outer end portion of the operation head 10 is more external than the outer end portion of the guide protection portion 14. It is comprised so that it may protrude. Further, when the operating head 10 is pushed toward the inside of the watch case 1 against the spring force of the spring member 13, the outer end of the operating head 10 becomes the outer end of the guide protection portion 14. It is comprised so that it may become the substantially same position.

  Further, as shown in FIG. 3, a retaining portion 15 for preventing the bezel 3 from peeling off from the case body 2 is formed on the outer peripheral surface of the guide protection portion 14. The retaining portion 15 is located on the inner surface side of the bezel 3 so that the outer end portion side of the guide protection portion 14 located on the outer surface side of the bezel 3 protrudes toward the inner surface of the large-diameter hole 7 b of the bezel 3. The inner side of the guide protector 14 is formed longer than the length protruding toward the inner surface of the large-diameter hole 7 b of the bezel 3.

  Thereby, the retaining part 15 is formed in the inclined surface which makes an undercut shape, as shown in FIG. For this reason, the retaining portion 15 formed on the outer peripheral surface of the guide protection portion 14 is configured such that when the bezel 3 is attached to the outer peripheral surface of the case body 2, the outer end side of the retaining portion 15 is It is configured to prevent the bezel 3 from peeling from the case body 2 by biting into the inner surface of the large-diameter hole 7b of the bezel 3 from the inner end side.

Next, the operation of the wristwatch switch device 6 will be described.
The switch device 6 is provided with a retaining member provided at the inner end portion of the operation shaft portion 9 when the operation head 10 is pushed out of the watch case 1 by the spring force of the spring member 13 in a normal state. The member 11 is in contact with the inner surface of the case body 2 of the watch case 1.

  At this time, the outer end portion of the operation head 10 of the operation member 8 protrudes to the outside from the outer end portion of the guide protection portion 14. Further, the operation member 8 has an inner end portion of the operation shaft portion 9 in contact with or approaching a switch contact plate (not shown) provided in the timepiece module 5 in the watch case 1 so that the switch contact plate is in an OFF state. It has become.

  In this state, when an impact is applied to the operation head 10 from the outer peripheral direction of the operation head 10, that is, the direction orthogonal to the axial direction of the operation head 10, the operation head 10 is surrounded by the guide protection unit 14. Therefore, the operation head 10 hardly receives an impact. However, when the operation head 10 protruding outside from the guide protection part 14 receives an impact, the operation head 10 is not attached to the guide protection part 14. Abuts on the inner surface.

  For this reason, even if the operation head 10 receives an impact, the operation head 10 is hardly displaced in the direction orthogonal to the axial direction. As a result, the operation shaft portion 9 does not bend in the direction orthogonal to the axial direction of the operation shaft portion 9 with the outer end portion of the small diameter hole 7a of the case body 2 as a fulcrum. Alternatively, it is possible to prevent the retaining member 11 of the operation shaft portion 9 from falling off.

  In this case, when an impact is applied toward the operation head 10 from the outer peripheral direction of the operation head 10, that is, the direction orthogonal to the axial direction of the operation head 10, the bezel 3 made of a soft synthetic resin is Even if it is deformed toward 10, a load due to the deformation of the bezel 3 is applied to the guide protection unit 14. For this reason, since the load due to the deformation of the bezel 3 can be received by the guide protector 14, the operation head 10 can be prevented from receiving an impact.

  At this time, the bezel 3 can be prevented from peeling from the case body 2 by the retaining portion 15 formed on the outer peripheral surface of the guide protection portion 14. That is, since the retaining portion 15 is formed on an inclined surface having an undercut shape, when the bezel 3 is mounted on the outer peripheral surface of the case body 2, the outer end side of the retaining portion 15 is the retaining portion. Since the inner surface of the large-diameter hole 7b of the bezel 3 is biting into the inner end portion of the bezel 15, the bezel 3 may be peeled from the case body 2 even if the bezel 3 is subjected to an impact and the bezel 3 is deformed. Absent.

  On the other hand, when the operation member 8 is operated to perform a switch operation, the operation head 10 is pushed toward the inside of the watch case 1 against the spring force of the spring member 13. Then, the operation shaft portion 9 slides in the small diameter hole 7 a of the case body 2, and the inner end portion of the operation shaft portion 9 projects into the case body 2. Thereby, the inner end portion of the operation shaft portion 9 of the operation member 8 presses a switch contact plate (not shown) provided in the timepiece module 5 to perform a switch operation.

  Thus, according to the wristwatch switch device 6, the wristwatch case 1 having the through-hole 7, the operation shaft portion 9 inserted into the through-hole 7 of the watchcase 1, and the outer end portion of the operation shaft portion 9. And an operation member 8 having an operation head 10 that protrudes outside the watch case 1 and a guide protector 14 that is provided on the watch case 1 and holds the operation head 10 movably along its axial direction. And the operation member 8 can be satisfactorily protected with a simple structure.

  In other words, the switch device 6 has a simple structure in which the guide protector 14 that holds the operation head 10 of the operation member 8 movably is provided in the wristwatch case 1, and the operation head 10 of the operation member 8 is externally provided. Even if it receives an impact, it is possible to reliably prevent the operation head 10 of the operation member 8 from being displaced in a direction perpendicular to the axial direction by the guide protection unit 14, and thereby the operation shaft portion of the operation member 8 due to the impact. 9 can be reliably prevented from being bent or deformed, or the retaining member 11 of the operating shaft portion 9 can be prevented from falling off, so that the operating member 8 can be reliably and satisfactorily protected.

  In this case, the watch case 1 includes a case main body 2 formed of a hard material and a bezel 3 formed of a soft material that covers the outer peripheral surface of the case main body 2. When an impact is applied from the outside, the impact can be buffered by the bezel 3 of a soft material, so that a high impact resistance can be provided.

  Further, in this switch device 6, the guide protector 14 is formed in a cylindrical shape that covers the outer peripheral surface of the operation head 10 of the operation member 6 and is formed integrally with the case main body 2. Since the number of parts does not increase even if it is provided, the assembly work is not complicated, and it is formed of the same hard synthetic resin as the case main body 2, so that the strength of the guide protection part 14 is ensured. As a result, the operating member 8 can be reliably and satisfactorily protected.

  In this case, since the retaining portion 15 for preventing the bezel 3 from peeling off from the case body 2 is formed on the outer peripheral surface of the guide protection portion 14, an impact is applied to the bezel 3 and the bezel 3 is deformed. However, it is possible to reliably prevent the bezel 3 from being peeled off from the case body 2 by the retaining portion 15, thereby preventing dust from entering between the bezel 3 and the guide protection portion 14.

  That is, since the retaining portion 15 is formed on an inclined surface having an undercut shape, when the bezel 3 is attached to the outer peripheral surface of the case body 2, the outer end side of the retaining portion 15 is Since the inner surface of the large-diameter hole 7b of the bezel 3 can be digged into the inner end portion side of the retaining portion 15, the bezel 3 is peeled off from the case body 2 even if the bezel 3 is deformed by an impact or the like. This can surely and well be prevented, whereby the screwing points of the bezel 3 can be reduced.

  In the first embodiment described above, the operation member 6 is directly attached to the through hole 7 of the watch case 1 and the guide protection part 14 is integrally formed on the case body 2 of the watch case 1. Not only this but the cylindrical member 17 is attached to the through-hole 7 of the wristwatch case 1 and the operation member 6 is attached to the cylindrical member 17 as in the first modified example shown in FIG. The guide protector 18 may be formed integrally with the guide 17.

  That is, the cylindrical member 17 is made of a highly rigid metal such as stainless steel, and as shown in FIG. 4, a small diameter cylinder fitted into the small diameter hole 7 a of the case body 2 that is a part of the through hole 7 of the watch case 1. A portion 17a and a flange portion 17b corresponding to the large-diameter hole 7b of the bezel 3 which is another part of the through hole 7 of the watch case 1 are provided. In this case, the small-diameter cylindrical portion 17a is configured such that a plurality of waterproof rings 17c are provided on the outer peripheral surface thereof, and the plurality of waterproof rings 17c are attached in a state of being pressed against the inner peripheral surface of the small-diameter hole 7a of the case body 2. Has been.

  Further, as shown in FIG. 4, the guide protection portion 18 is a cylindrical portion integrally formed on the flange portion 17b of the cylindrical member 17 so as to protrude outward from the case main body 2, and is provided in the first embodiment. Like the form, it is arranged between the operation head 10 of the operation member 8 and the bezel 3 and is configured to hold the operation head 10 movably along the axial direction of the operation shaft portion 9.

  Also in this case, as shown in FIG. 4, the guide protector 18 is formed so that its axial length is substantially the same as the axial length of the operation head 10. Moreover, between the collar part 17b of the cylindrical member 17, and the operation head 10, the spring member 13 is arrange | positioned similarly to 1st Embodiment. Thereby, when the operation head 10 is pushed out of the watch case 1 by the spring force of the spring member 13, the outer end portion of the operation head 10 is more external than the outer end portion of the guide protection portion 18. It is comprised so that it may protrude.

  Further, when the operating head 10 is pushed toward the inside of the watch case 1 against the spring force of the spring member 13, the outer end of the operating head 10 becomes the outer end of the guide protection unit 18. It is comprised so that it may become the substantially same position. Further, a retaining portion (not shown) for preventing the bezel 3 from peeling off from the case body 2 is formed on the outer peripheral surface of the guide protection portion 18 as in the first embodiment.

  According to the switch device 6 of the first modified example, the tubular member 17 is formed of a highly rigid metal such as stainless steel, in addition to the same effects as the first embodiment. Since the strength of the guide protection part 18 formed integrally with the member 17 can be increased as compared with that of the first embodiment, a higher impact resistance than that of the first embodiment is provided. can do.

  In the above-described first embodiment and the first modification thereof, the case where the retaining portion 15 provided on the outer peripheral surface of the guide protection portions 14 and 18 is formed on an undercut inclined surface has been described. However, the retaining portion is not necessarily an undercut inclined surface, and may be formed in an uneven shape such as a corrugated shape.

(Second Embodiment)
Next, a second embodiment of a wristwatch to which the present invention is applied will be described with reference to FIG. In addition, the same code | symbol is attached | subjected and demonstrated to the same part as 1st Embodiment shown by FIGS. 1-3.
As shown in FIG. 5, the wristwatch is different from the first embodiment in the structure of the operation head 20 of the operation member 8, and accordingly, the guide protector 21 is configured differently from the first embodiment. Other than this, the configuration is substantially the same as in the first embodiment.

  In this case, as shown in FIG. 5, the operation shaft portion 9 has an inner end protruding into the case body 2 of the watch case 1 and an outer end positioned to be within the bezel 3 of the watch case 1. Is formed. As in the first embodiment, a retaining member 11 such as an E-ring is attached to the inner end portion of the operation shaft portion 9. A plurality of waterproof rings 12 are attached to the outer peripheral surface of the operation shaft portion 9.

  As shown in FIG. 5, the operation head 20 is formed in a substantially cap shape having a guide groove 20a. The operating head 20 has an outer diameter that is the same as or slightly smaller than the inner diameter of the large-diameter hole 7 b of the bezel 3. On the inner end surface of the operation head 20, the operation shaft portion 9 is integrally formed with the outer end portion of the operation shaft portion 9 being positioned at the center thereof. A guide groove 20 a is formed in an annular shape on the inner end surface of the operation head 20.

  As shown in FIG. 5, the guide groove 20 a is formed concentrically along the outer periphery of the operation shaft portion 9. Further, the guide groove 20 a is formed so that the axial depth of the operation head 20 is slightly shallower than the axial length of the operation head 20. Also in this case, the operation member 8 includes the spring member 13 that urges the operation head 20 in the direction of pushing the operation head 20 toward the outside of the watch case 1 as in the first embodiment.

  Thereby, as shown in FIG. 5, the operation head 8 is pushed out toward the outside of the wristwatch case 1 by the spring force of the spring member 13 in a normal state, and the inner end of the operation shaft portion 9. The retaining member 11 is configured to abut against the inner surface of the case body 2 of the watch case 1. In this case, the operation member 8 has its inner end portion of the operation shaft portion 9 in contact with or approaching a switch contact plate (not shown) provided on the timepiece module 5 in the watch case 1 to turn off the switch contact plate. It is configured to be in a state.

  In addition, as shown in FIG. 5, when the operation head portion 20 is pushed against the spring force of the spring member 13, the operation shaft portion 9 moves inside the small diameter hole 7 a of the case body 2. By sliding, the inner end portion of the operation shaft portion 9 is configured to protrude into the case body 2. In this case, the operation member 8 is configured such that the inner end portion of the operation shaft portion 9 presses a switch contact plate (not shown) provided in the timepiece module 5 to perform a switch operation.

  By the way, as shown in FIG. 5, the guide protection unit 21 is inserted into a guide groove 20 a provided in the operation head 20 of the operation member 8 so as to be movable along the axial direction of the operation shaft unit 9. The head 20 is configured to be held. That is, the guide protection part 21 is formed in a cylindrical shape having substantially the same size as the guide groove 20 a of the operation head 20.

  Further, as shown in FIG. 5, the guide protector 21 is formed integrally with the case body 2 in a state of protruding from the outer surface of the case body 2. In this case, the guide protector 21 is formed so that its axial length is substantially the same as the depth of the guide groove 20a of the operating head 20, that is, the length of the guide groove 20a in the axial direction of the operating head 20. ing.

  Thereby, when the operation head 20 is pushed out of the wristwatch case 1 by the spring force of the spring member 13, about half of the guide protection portion 21 is inserted into the guide groove 20a. ing. Further, when the operation head 20 is pushed toward the inside of the watch case 1 against the spring force of the spring member 13, almost the entire guide protection portion 14 is inserted into the guide groove 20 a. It is configured.

Next, the operation of the wristwatch switch device 6 according to the second embodiment will be described.
As in the first embodiment, in the switch device 6, in the normal state, the operation head 20 is pushed out of the watch case 1 by the spring force of the spring member 13, and the inner end of the operation shaft portion 9. The retaining member 11 is in contact with the inner surface of the case body 2 of the watch case 1.

  At this time, the outer end portion of the operation head 20 of the operation member 8 protrudes to the outside from the outer end surface of the watch case 1, that is, the outer end surface of the large-diameter hole 7 b of the bezel 3. For this reason, the guide protector 21 is in a state where approximately half of the outer end side is inserted into the guide groove 20 a of the operation head 20. Further, the operation member 8 has an inner end portion of the operation shaft portion 9 in contact with or approaching a switch contact plate (not shown) provided in the timepiece module 5 in the watch case 1 so that the switch contact plate is in an OFF state. It has become.

  In this state, when an impact is applied to the operating head 20 from the outer peripheral direction of the operating head 20, that is, the direction orthogonal to the axial direction of the operating head 20, the guide is guided into the guide groove 20 a of the operating head 20. Since approximately half of the protective part 21 is inserted, the inner peripheral surface of the guide groove 20a of the operating head 20 abuts on the outer peripheral surface of the guide protective part 21 inserted in the guide groove 20a.

  For this reason, even if the operation head 20 receives an impact, the operation head 20 is hardly displaced in the direction orthogonal to the axial direction. As a result, the operation shaft portion 9 does not bend in a direction orthogonal to the axial direction of the operation shaft portion 9 with the outer end portion of the small diameter hole 7a of the case body 2 as a fulcrum. For this reason, it is possible to prevent the operation shaft portion 9 from being bent or deformed or the retaining member 11 of the operation shaft portion 9 from falling off.

  In this case, when an impact is applied to the operation head 20 from the outer peripheral direction of the operation head 20, that is, the direction orthogonal to the axial direction of the operation head 20, the bezel 3 made of a soft synthetic resin is moved to the operation head. The load due to the deformation of the bezel 3 is applied to the outer peripheral surface of the operation head 20 at this time. However, also at this time, the operation head 10 is hardly displaced by the guide protection part 21. For this reason, it is possible to prevent the operation shaft portion 9 from being bent or deformed or the retaining member 11 of the operation shaft portion 9 from falling off.

  On the other hand, when the operation member 8 is operated to perform the switch operation, the operation head 20 is pushed toward the inside of the watch case 1 against the spring force of the spring member 13. Then, since the guide protection part 21 is relatively inserted into the guide groove 20a of the operation head 20, the operation shaft part 9 slides in the small diameter hole 7a of the case body 2, and the inner end part of the operation shaft part 9 Protrudes into the case body 2. Thereby, the inner end portion of the operation shaft portion 9 of the operation member 8 presses a switch contact plate (not shown) provided in the timepiece module 5 to perform a switch operation.

  As described above, according to the wristwatch switch device 6 of the second embodiment, the guide protection portion 21 that holds the operation head 20 of the operation member 8 movably along the axial direction, as in the first embodiment. The guide head protects the operating head 20 from being displaced in a direction perpendicular to the axial direction even when the operating head 20 of the operating member 8 receives an impact from outside. This can be reliably prevented by the portion 21. Accordingly, it is possible to reliably prevent the operation shaft portion 9 of the operation member 8 from being bent and deformed, or the retaining member 11 of the operation shaft portion 9 from falling off, so that the operation member 8 is reliably and satisfactorily protected. be able to.

  That is, in this switch device 6, the operation head 20 of the operation member 8 is formed with a guide groove 20 a in an annular shape on the inner surface located on the case body 2 side, and the guide protection portion 21 is provided with the guide groove 20 a of the operation head 20. Since it is formed in a cylindrical shape that is movably inserted into and holds the operating head 20, the operating member 8 can be reliably and satisfactorily protected, and the guide protector 21 is provided outside the watch case 1. Therefore, it is possible to provide a favorable appearance and design.

  Moreover, in this switch apparatus 6, since the guide protection part 21 is integrally formed in the case main body 2, even if the guide protection part 21 is provided as in the first embodiment, the number of parts may increase. Therefore, since the assembly work is not complicated, it is formed of the same hard synthetic resin as that of the case main body 2, so that the strength of the guide protection portion 21 can be ensured. It can be well protected.

  In the above-described second embodiment, the operation member 8 is directly attached to the through hole 7 of the watch case 1 and the guide protection part 21 is integrally formed on the case body 2 of the watch case 1. Not only this but the cylindrical member 25 is attached to the through-hole 7 of the wristwatch case 1 and the operation member 8 is attached to the cylindrical member 25 as in the second modified example shown in FIG. The guide protector 26 may be formed integrally with the 25.

  Also in this case, the cylindrical member 25 is made of a highly rigid metal such as stainless steel, and is fitted into the small diameter hole 7a of the case body 2 which is a part of the through hole 7 of the watch case 1 as shown in FIG. A small-diameter cylindrical portion 25a and a flange portion 25b corresponding to the large-diameter hole 7b of the bezel 3, which is another part of the through-hole 7 of the watch case 1, are provided. In this case, the small-diameter cylindrical portion 25a is configured such that a plurality of waterproof rings 25c are provided on the outer peripheral surface thereof, and the plurality of waterproof rings 25c are attached in a state of being pressed against the inner peripheral surface of the small-diameter hole 7a of the case body 2. Has been.

  Further, as shown in FIG. 6, the guide protection part 26 is a cylindrical part integrally formed on the flange part 25b of the cylindrical member 25 so as to protrude from the case body 2 toward the outside. Similar to the configuration, it is inserted into a guide groove 20 a provided in the operation head 20 of the operation member 8, and is configured to hold the operation head 20 movably along the axial direction of the operation shaft portion 9. Yes.

  Also in this case, as shown in FIG. 6, the guide protector 26 has an axial length substantially the same as the depth of the guide groove 20a of the operating head 20, that is, the axial length of the guide groove 20a. Is formed. Further, the spring member 13 is disposed between the flange portion 25b of the cylindrical member 25 and the operation head portion 20 as in the second embodiment.

  Thereby, as shown in FIG. 6, when the operation head 20 is pushed out of the watch case 1 by the spring force of the spring member 13, about half of the outer side of the guide protector 26. Is configured to be inserted into the guide groove 20 a of the operation head 20. Further, when the operation head 20 is pushed toward the inside of the watch case 1 against the spring force of the spring member 13, almost all of the guide protection portion 18 is in the guide groove 20 a of the operation head 20. It is configured to be inserted into.

  According to the switch device 6 of the second modified example as described above, there is an effect similar to that of the second embodiment, and the cylindrical member 25 is formed of a highly rigid metal such as stainless steel. Since the strength of the guide protection part 26 formed integrally with the shaped member 25 can be higher than that of the second embodiment, it is possible to provide a higher impact resistance than that of the second embodiment. it can.

  In addition, in each of the first and second embodiments and the modifications thereof described above, the case where the present invention is applied to the push button type switch device 6 has been described. However, the present invention is not limited thereto, and a winding stem such as a crown is provided. The present invention can also be applied to a switch device.

  In the above-described first and second embodiments and modifications thereof, the case where the present invention is applied to a wristwatch has been described. However, the present invention is not necessarily a wristwatch. For example, a travel watch, an alarm clock, a table clock, a wall clock, etc. In addition to being applicable to various types of watches, it can also be widely applied to electronic devices equipped with a switch device.

As mentioned above, although several embodiment of this invention was described, this invention is not restricted to these, The invention described in the claim and its equal range are included.
The invention described in the claims of the present application will be appended below.

(Appendix)
The invention according to claim 1 has a case having a through hole, a shaft portion inserted into the through hole of the case, and a head portion provided at an end portion of the shaft portion and protruding outside the case. A switch device comprising: an operation member; and a guide protection portion that is provided with respect to the case and holds the head portion movably along the axial direction of the shaft portion.

  According to a second aspect of the present invention, in the switch device according to the first aspect, the case includes a case main body formed of a hard material and a bezel formed of a soft material covering an outer peripheral surface of the case main body. It is provided with these. The switch apparatus characterized by the above-mentioned.

  According to a third aspect of the present invention, in the switch device according to the first or second aspect, the guide protection portion is formed in a cylindrical shape that covers an outer peripheral surface of the head portion of the operation member, and the case The switch device is formed integrally with a main body.

  According to a fourth aspect of the present invention, in the switch device according to the second or third aspect, a retaining portion for preventing the bezel from peeling off from the case main body is formed on the outer peripheral surface of the guide protection portion. The switch device is characterized in that

  According to a fifth aspect of the present invention, in the switch device according to the first or second aspect, the head of the operation member has an annular guide groove formed on an inner surface located on the case body side, The switch is characterized in that the guide protection part is formed in a cylindrical shape that is movably inserted into the guide groove of the head and holds the head, and is formed integrally with the case body. Device.

  According to a sixth aspect of the present invention, in the switch device according to the first or second aspect, a cylindrical member is attached in the through hole of the case, and the operation member is attached to the cylindrical member. The switch device is characterized in that the shaft portion of the member is inserted and the guide protection portion is integrally formed.

  A seventh aspect of the present invention is a timepiece including the switch device according to any one of the first to sixth aspects.

DESCRIPTION OF SYMBOLS 1 Watch case 2 Case main body 3 Bezel 5 Watch module 6 Switch apparatus 7 Through-hole 7a Small-diameter hole 7b Large-diameter hole 8 Operation member 9 Operation shaft part 10, 20 Operation head part 13 Spring member 14, 18, 21, 26 Guide protection part 15 Detachment part 17, 25 Cylindrical member 20a Guide groove

The present invention includes a case having a through hole, a shaft portion inserted into the through hole of the case, an operation member having a head portion provided at an end portion of the shaft portion and projecting to the outside of the case, A switch device comprising: a guide protection portion formed integrally with a case main body of the case, and holding the head movably along the axial direction of the shaft portion.

Further, in this switch device 6, the guide protection part 14 is formed in a cylindrical shape covering the outer peripheral surface of the operation head 10 of the operation member 8 and is formed integrally with the case body 2, so that the guide protection part 14 is formed. Since the number of parts does not increase even if it is provided, the assembly work is not complicated, and it is formed of the same hard synthetic resin as the case main body 2, so that the strength of the guide protection part 14 is ensured. As a result, the operating member 8 can be reliably and satisfactorily protected.

In the above-described first embodiment, the operation member 8 is directly attached to the through hole 7 of the watch case 1 and the guide protection portion 14 is integrally formed on the case body 2 of the watch case 1. Not only this but the cylindrical member 17 is attached to the through-hole 7 of the wristwatch case 1 and the operation member 8 is attached to the cylindrical member 17 as in the first modified example shown in FIG. The guide protector 18 may be formed integrally with the guide 17.

Claims (7)

A case having a through hole;
An operating member having a shaft portion inserted into the through hole of the case and a head portion provided at an end portion of the shaft portion and projecting to the outside of the case;
A guide protector provided for the case and holding the head movably along the axial direction of the shaft;
A switch device comprising:   2. The switch device according to claim 1, wherein the case includes a case main body formed of a hard material and a bezel formed of a soft material covering an outer peripheral surface of the case main body. Switch device to do.   3. The switch device according to claim 1, wherein the guide protection portion is formed in a cylindrical shape that covers an outer peripheral surface of the head portion of the operation member, and is formed integrally with the case main body. A switch device characterized by.   4. The switch device according to claim 2, wherein a retaining portion for preventing the bezel from peeling off from the case body is formed on an outer peripheral surface of the guide protection portion. apparatus.   3. The switch device according to claim 1, wherein a guide groove is formed in an annular shape on an inner side surface of the operation member positioned on the case body side, and the guide protection portion is formed of the head portion. A switch device, wherein the switch device is formed in a cylindrical shape that is movably inserted into the guide groove and holds the head, and is formed integrally with the case body.   3. The switch device according to claim 1, wherein a cylindrical member is attached in the through hole of the case, and the shaft portion of the operation member is inserted into the cylindrical member. And the guide protection part is integrally formed.   A timepiece comprising the switch device according to any one of claims 1 to 6.

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