JP2012054201A - Push button switch structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a push button switch structure which secures waterproofness and facilitates assembly work and disassembly work even if a through hole of a case is not formed in a long shape.SOLUTION: An operation member 13 is provided so as to move in an axial direction of a through hole 11 of a watch case 1 between a first position and a second portion which is pulled out from the first position. A first waterproof ring 16, which protrudes from a guide pipe 12 in the through hole 11 to the inner side of the watch case 1 when the operation member 13 is in the first position and is located in the guide pipe 12 of the through hole 11 when the operation member 13 is in the second position, and a second waterproof ring 17, which is located in the guide pipe 12 of the through hole 11 when the operation member 13 is in the first position, are provided at the operation member 13. Thus, even if the through hole 11 of the watch case 1 is not formed in a long shape, the waterproofness and airtightness are secured by either one of the first and second waterproof rings 16 and 17. Further, the structure facilitates the assembly work and the disassembly work.

Description

  The present invention relates to a push button switch structure used in a waterproof electronic device such as a watch such as a wristwatch, an electronic camera, and a mobile phone.

  Conventionally, in a wristwatch pushbutton switch structure, as described in Patent Document 1, a through hole is provided in a side wall portion of a watch case, and an operation member is inserted into the through hole so as to be slidable in the axial direction. A device is known that is configured to push a switch plate in a watch case by sliding the operation member.

Japanese Utility Model Publication No. 62-178391

  However, in such a conventional push button switch structure, when the tip of the operation member inserted into the through hole of the watch case protrudes long inside the watch case, the watch module is inserted into the watch case. Since the dial plate comes into contact with the protruding tip of the operation member, the timepiece module cannot be incorporated into the watch case with the operation member inserted into the through hole of the watch case.

  For this reason, in such a conventional push button switch structure, since the operation member must be mounted in the through hole of the watch case after the watch module is assembled in the watch case, the work of assembling and disassembling the watch is troublesome. In addition, there is a problem that before the watch module is assembled in the watch case, the watch case and the operation member cannot be airtightly and waterproofly tested with the operation member attached to the watch case.

  Further, in such a conventional push button switch structure, the length that the tip of the operation member protrudes inside the watch case is shortened so that the watch module can be incorporated into the watch case with the operation member mounted. Things are also considered. However, in such a structure in which the length of the tip of the operation member protruding into the inside of the watch case is simply shortened, the retaining member is attached to the tip of the operation member with the operation member mounted in the through hole of the watch case. Since the operation becomes difficult, it is necessary to sufficiently lengthen the sliding length of the operation member.

  In other words, if the slide length of the operation member is increased, when the retaining member is attached to the tip of the operation member with the operation member mounted in the through hole of the watch case, the operation member is directed toward the inside of the watch case. By pushing in, the tip of the operation member protrudes long into the wristwatch case, and the retaining member can be attached to the tip of the operation member in this state. Further, when the watch module is assembled in the watch case, the tip of the operation member can be prevented from getting in the way by pulling the operation member toward the outside of the watch case.

  However, in order to sufficiently lengthen the slide length of the operation member in this way, the watch case must be operated unless the side wall of the watch case is sufficiently thick and the through-hole length is not long. It is said that the waterproofing ring provided on the operation member is positioned in the through hole between the position where the operation member is most pulled out and the position where the operation member is pushed in most with the member mounted, and it is said that waterproofness cannot be secured. There is a problem that the entire wristwatch becomes large.

  The problem to be solved by the present invention is to provide a push button switch structure that can ensure waterproofness and can be easily assembled and disassembled without forming a long through hole in the case.

In order to solve the above problems, the present invention includes the following components.
According to the first aspect of the present invention, the operating member having a locking portion at the tip of the through-hole of the case has a first position in the axial direction and a second position where the operating member is pulled out from the first position. In the push button switch structure provided to be movable in position, the switch is mounted on the operation member, and protrudes from the through hole into the case when the operation member is at the first position in the axial direction. When the operating member is in the second position in the axial direction, the first waterproof ring positioned in the through hole and the operating member are mounted, and the operating member is installed in the first position in the axial direction. And a second waterproof ring positioned in the through hole when the switch is in a pushbutton switch structure.

  According to a second aspect of the present invention, when the first waterproof ring is in the first position in the axial direction of the operation member, the first waterproof ring protrudes from the through hole into the case. The pushbutton switch structure according to claim 1, wherein the pushbutton switch structure is locked to an inner edge portion of the through hole located in the case.

  According to a third aspect of the present invention, in the pushbutton switch according to the first or second aspect, a plurality of the second waterproof rings are mounted on the operation member along the axial direction thereof. Structure.

  The invention according to claim 4 is characterized in that the first waterproof ring and the second waterproof ring are made of different elastic materials. This is a push button switch structure.

  According to a fifth aspect of the present invention, the operation member is provided with a head portion that protrudes from the through hole of the case toward the outside of the case, and is positioned on the outer side of the head portion and the through hole. The push button switch structure according to any one of claims 1 to 4, wherein a spring member is disposed between the outer edge portion and the outer edge portion.

  According to this invention, when the operating member is in the first position in the axial direction, even if the first waterproof ring protrudes from the through hole of the case to the inside of the case, the second waterproof ring is the through hole. Therefore, when the operation member is in the first position in the axial direction, the second waterproof ring can ensure waterproofness. In addition, when the operation member is pulled out from the first position in the axial direction and is in the second position, the first waterproof ring is located in the through hole of the case, so that the operation member is in the axial direction. When in the position 2, airtightness and waterproofness can be ensured by the first waterproof ring, and airtightness and waterproof inspection can be performed.

  For this reason, even if the through-hole of the case is not formed long, waterproofing can be ensured by any of the first and second waterproof rings, and the operation member can be used at the time of assembly and repair. By pulling out from the position to the second position, even if the operating member is mounted in the through-hole, the tip of the operating member is not obstructed, and a component such as a module can be installed in the case. Since it is possible to take out parts such as a module, assembly work and disassembly work can be easily performed.

In Embodiment 1 which applied this invention to the wristwatch, it is the expanded sectional view of the principal part which showed the state which has an operation member in a 1st position. FIG. 3 is an enlarged cross-sectional view of a main part showing a state where an operation member is in a second position in the wristwatch shown in FIG. 1. FIG. 2 is an enlarged cross-sectional view of a main part illustrating a state in which the operation member is pushed in a state of being in a first position and a switch plate is operated by a switch in the wristwatch illustrated in FIG. 1. It is the expanded sectional view which showed the principal part in Embodiment 2 which applied this invention to the wristwatch. It is the expanded sectional view which showed the principal part in Embodiment 3 which applied this invention to the wristwatch.

(Embodiment 1)
A first embodiment in which the present invention is applied to a wristwatch will be described below with reference to FIGS.
As shown in FIG. 1, the wristwatch includes a wristwatch case 1. The wristwatch case 1 includes a case main body 1a and a bezel portion 1b attached to the upper outer periphery of the case main body 1a via a packing 1c.

  As shown in FIG. 1, a watch glass 2 is attached to the upper portion of the watch case 1, that is, the upper portion of the bezel portion 1b via a packing 2a, and the lower portion of the watch case 1, that is, the lower portion of the case body 1a. The back cover 3 is attached via a waterproof packing 3a. Further, as shown in FIG. 1, a watch module 4 is incorporated in the wristwatch case 1. The timepiece module 4 includes a housing 5.

  Although not shown in the figure, various parts necessary for a timepiece function such as a timepiece movement and a circuit board are incorporated in the housing 5. On the upper surface of the housing 5, as shown in FIG. 1, a dial plate 7 having light permeability is arranged through a solar panel 6. Further, as shown in FIG. 1, a ground plate 8 is provided on the lower surface of the housing 5. A switch plate 9 is provided on the ground plate 8 so as to face the side surface of the housing 5.

  Incidentally, as shown in FIG. 1, a push button switch 10 is provided on the side wall of the wristwatch case 1, that is, the side wall of the case main body 1a. The push button switch 10 is provided on the side wall portion of the watch case 1 and has a configuration in which an operation member 13 is slidable through a guide pipe 12 in a through hole 11 that penetrates the inside and outside of the watch case 1. It has become.

  In this case, as shown in FIG. 1, the through hole 11 has a large-diameter hole portion 11 a located on the outer side in the side wall portion of the watch case 1 and a small-diameter hole portion 11 b located on the inner side in the side wall portion of the watch case 1. Are provided on the same axis. A metal guide pipe 12 is fitted into the small-diameter hole portion 11 b in the through hole 11.

  As shown in FIG. 1, the guide pipe 12 has an outer end portion (the right end portion in FIG. 1) having a size substantially equal to or slightly smaller than the inner diameter of the large-diameter hole portion 11a. A portion 12a is provided, and the flange portion 12a is fitted into the small diameter hole portion 11b in a state where the flange portion 12a is in contact with the stepped surface 11c of the large diameter hole portion 11a. Further, the guide pipe 12 has an inner end portion 12 b (the left end portion in FIG. 1) located inside thereof slightly protruding into the watch case 1 from the small diameter hole portion 11 b of the through hole 11.

  On the other hand, the operating member 13 is formed in a round bar shape whose outer diameter is the same as or slightly smaller than the inner diameter of the guide pipe 12, and is slidably inserted into the guide pipe 12 as shown in FIG. It is configured. As shown in FIG. 1, a head portion 14 to be inserted into the large-diameter hole portion 11a is provided at an end portion of the operation member 13 located on the outer side of the watch case 1. The head 14 is formed so that its outer diameter is slightly smaller than the inner diameter of the large-diameter hole 11a.

  As shown in FIG. 1, the operation member 13 has its head 14 inserted into the large-diameter hole 11a and the outer end surface of the head 14 and the outer surface of the watch case 1 are located on the same plane. The tip 13a of the operation member 13 located on the opposite side of the head 14 protrudes into the watch case 1 and faces the switch plate 9 of the timepiece module 4. In this state, the tip 13a of the operation member 13 The switch plate 9 is formed so as to contact or approach the switch plate 9. A retaining ring 15 such as an E ring is attached to the tip 13 a of the operation member 13.

  Thereby, as shown in FIG. 3, the operating member 13 is pushed into the large-diameter hole portion 11a of the through-hole 11 so that the head portion 14 is brought into contact with the flange portion 12a of the guide pipe 12, as shown in FIG. As shown, the head 14 is pulled out of the large-diameter hole 11 a of the through hole 11, and the retaining ring 15 provided at the distal end 13 a of the operating member 13 contacts the inner end 12 b of the guide pipe 12. It is configured to slide between.

  In this case, as shown in FIGS. 1 and 3, the slide position of the operation member 13 is the first position in a state where the head 14 is movably inserted into the large-diameter hole portion 11 a of the through hole 11. 2, the head 14 has a second position in a state of being pulled out from the large-diameter hole portion 11 a of the through hole 11, and each of the first and second positions is provided. The operation member 13 is configured to move along the axial direction.

  The operation member 13 is provided with a first waterproof ring 16 and a second prevention ring 17 as shown in FIG. In this case, each of the first and second waterproof rings 16 and 17 is made of an elastic material such as nitrile rubber, butyl rubber, silicone rubber, or urethane rubber, and the cross-sectional shape thereof is circular, elliptical, semicircular (D-shaped), or the like. It is formed into a shape. Further, the outer peripheral surface of the operation member 13 is provided with a first mounting groove 13b in which the first waterproof ring 16 is mounted and a second mounting groove 13c in which the second prevention ring 17 is mounted. .

  As shown in FIGS. 1 and 3, the first prevention ring 16 protrudes from the small diameter hole portion 11b of the through hole 11 into the inside of the watch case 1 when the operation member 13 is in the first position. As shown in FIG. 2, when the operation member 13 is in the second position, the operation member 13 is positioned in the guide pipe 12 in the through hole 11 so as to maintain airtightness.

  That is, as shown in FIGS. 1 and 3, the first waterproof ring 16 is provided with the first mounting of the operation member 13 when the operation member 13 protrudes into the wristwatch case 1 at the first position. It protrudes elastically from the groove 13b toward the outer peripheral surface of the operating member 13, and the protruded portion is configured to elastically abut against and engage with the inner end portion 12b of the guide pipe 12 as shown in FIG. ing.

  Further, as shown in FIG. 2, the first waterproof ring 16 is elastically deformed when the operating member 13 moves toward the second position and is positioned in the guide pipe 12 in the through hole 11. Thus, the airtightness is maintained by elastically contacting the inner surface of the guide pipe 12 and sliding along the inner surface of the guide pipe 12 in this state.

  On the other hand, as shown in FIGS. 1 and 3, the second waterproof ring 17 is located in the guide pipe 12 in the through hole 11 when the operation member 13 is in the first position. It is constituted so that airtightness is maintained by elastically contacting the inner surface of 12 and sliding along the inner surface of the guide pipe 12 in this state.

  In addition, as shown in FIG. 2, the second waterproof ring 17 moves the operation member 13 from the first position toward the second position, so that the first waterproof ring 16 is in the through hole 11. When positioned in the guide pipe 12, the guide pipe 12 is configured to be positioned in the large diameter hole portion 11 a of the through hole 11 from the guide pipe 12. At this time, as shown in FIG. 2, the second waterproof ring 17 is configured to elastically return and elastically protrude from the first mounting groove 13 b of the operation member 13 toward the outer peripheral surface of the operation member 13. ing.

  By the way, each of the first and second waterproof rings 16 and 17 is formed of an elastic material having a different material. For example, the first waterproof ring 16 may be formed of an elastic material harder than the second waterproof ring 17, and conversely, the first waterproof ring 16 is more than the second waterproof ring 17. It may be formed of a soft elastic material.

Next, the operation of the push button switch 10 will be described.
First, before assembling the watch module 4 in the watch case 1, the operation member 13 of the push button switch 10 is attached to the through hole 11 of the watch case 1. At this time, as shown in FIGS. 1 to 3, the watch glass 2 is attached to the upper portion of the watch case 1 in advance. In addition, the first waterproof ring 16 is attached to the first mounting groove 13 b of the operation member 13, and the second waterproof ring 17 is attached to the second mounting groove 13 c of the operation member 13.

  Thereafter, the tip 13 a of the operation member 13 is inserted into the guide pipe 12 in the through hole 11 from the outside of the watch case 1. At this time, first, the first waterproof ring 16 is elastically deformed and inserted into the guide pipe 12 as shown in FIG. Then, the head 14 of the operation member 13 is positioned outside the large diameter hole portion 11a of the through hole 11, and the second waterproof ring 17 is positioned inside the large diameter hole portion 11a.

  When the operating member 13 is further pushed in this state, the head 14 of the operating member 13 is positioned in the large-diameter hole 11a of the through hole 11 and the second waterproof ring 17 is elastic as shown in FIG. It is deformed and inserted into the guide pipe 12. Accordingly, the first waterproof ring 16 moves in the guide pipe 12 and protrudes from the guide pipe 12 into the wristwatch case 1.

  Thereafter, as shown in FIG. 3, the operation member 13 is further pushed in, and the head 14 of the operation member 13 is brought into contact with the flange portion 12 a of the guide pipe 12 disposed in the large-diameter hole portion 11 a of the through hole 11. In a state where the second waterproof ring 17 is in elastic contact with the inner surface of the guide pipe 12, the first waterproof ring 16 protrudes into the watch case 1 and is farthest from the inner surface of the watch case 1. Accordingly, the tip 13 of the operation member 13 protrudes most into the watch case 1.

  In this state, the retaining ring 15 is attached to the tip 13 a of the operation member 13. At this time, since the tip 13 of the operation member 13 is sufficiently separated from the inner surface of the wristwatch case 1, the retaining ring 15 can be easily attached to the tip 13a of the operation member 13. Thereby, when the operation member 13 is pulled out, the retaining ring 15 abuts on the inner end portion 12 b of the guide pipe 12, so that the operation member 13 does not come out of the guide pipe 12.

Next, a case where the timepiece module 4 is assembled in the watch case 1 to which the operation member 13 is attached will be described.
In this case, as shown in FIG. 2, the operation member 13 is pulled out toward the outside of the watch case 1, and the retaining ring 15 attached to the tip 13 a of the operation member 13 is connected to the inner end 12 b of the guide pipe 12. Make contact.

  At this time, as shown in FIG. 2, the head 14 of the operation member 13 is pulled out from the large-diameter hole 11 a of the through hole 11, and the second waterproof ring 17 is pulled out from the guide pipe 12 to penetrate. The first waterproof ring 16 is located in the guide pipe 12 by being elastically deformed and located in the large-diameter hole portion 11 a of the hole 11. In this state, the first waterproof ring 16 is in elastic contact with the inner surface of the guide pipe 12, so that airtightness is maintained.

  For this reason, the airtightness and waterproofness of the watch case 1 can be inspected by attaching the back cover 3 to the lower portion of the watch case 1 via the waterproof packing 3a before the watch module 4 is incorporated in the watch case 1. it can. That is, when the airtightness and waterproofness of the watch case 1 are inspected, even when the operation member 13 is pulled out and is in the second position, the operation member 13 is pushed in and is in the first position. Also, the airtightness and waterproofness can be inspected well.

  For example, when the operation member 13 is pulled out and is in the second position, as described above, the first waterproof ring 16 elastically contacts the inner surface of the guide pipe 12 to maintain airtightness. The airtightness and waterproofness of the case 1 can be inspected. Further, when the operation member 13 is pushed in and is in the first position, the second waterproof ring 17 is elastically contacted with the inner surface of the guide pipe 12 to maintain the airtightness. It can also be tested for waterproofness.

  In this way, after the airtightness and waterproofness are inspected, the timepiece module 4 can be incorporated into the wristwatch case 1 by removing the back cover 3. At this time, as shown in FIG. 2, the operation member 13 is pulled out to the outside of the watch case 1, and the retaining ring 15 attached to the distal end 13 a of the operation member 13 is brought into contact with the inner end portion 12 b of the guide pipe 12. Let

  Thereby, the length by which the tip 13a of the operation member 13 protrudes into the wristwatch case 1 is the shortest. For this reason, as shown in FIG. 2, a gap is generated between the tip 13a of the operation member 13 and the side portion of the timepiece module 4 (that is, each side portion of the dial plate 7 and the solar panel 6). The watch module 4 can be easily and satisfactorily incorporated into the watch case 1 without the 13 tip 13a getting in the way. At this time, the switch plate 9 provided on the base plate 8 of the timepiece module 4 is made to correspond to the tip 13 a of the operation member 13.

  As shown in FIG. 1, when the operation member 13 is pushed in and the head 14 of the operation member 13 is inserted into the large-diameter hole portion 11 a of the through hole 11, the second waterproof ring 17 is elastically deformed. Arranged in the guide pipe 12, the first waterproof ring 16 protrudes from the guide pipe 12 into the watch case 1, and the tip 13 a of the operation member 13 comes into contact with or approaches the switch plate 9 of the timepiece module 4. . Thus, the push button switch 10 is configured.

  In this state, when the head 14 provided on the operation member 13 of the pushbutton switch 10 is pressed, the operation member 13 slides into the wristwatch case 1 as shown in FIG. While being pushed into the large-diameter hole portion 11 a of the hole 11, the second waterproof ring 17 slides in a state where it is elastically contacted with the inner surface of the guide pipe 12.

  As a result, the airtightness is maintained by the second waterproof ring 17, and the tip 13a of the operation member 13 is switched while the first waterproof ring 16 moves in the wristwatch case 1 as shown in FIG. A switch operation is performed by pressing the plate 9 and pressing the switch plate 9 against a contact portion (not shown) provided on the side surface of the timepiece module 4.

  In this case, when the first waterproof ring 16 moves in the wristwatch case 1, the first waterproof ring 16 elastically moves from the first mounting groove 13 b of the operation member 13 toward the outer peripheral surface of the operation member 13. As shown in FIG. 1, the protruding portion is elastically contacted and locked to the inner end portion 12 b of the guide pipe 12, so that the operation member 13 can move from the first position to the second position. Can be prevented from moving to.

  Thus, in a state where the operation member 13 is in the first position, the position where the first waterproof ring 16 abuts on the inner end portion 12b of the guide pipe 12 and the tip 13a of the operation member 13 press the switch plate 9. Thus, the switch member can be operated by sliding the operation member 13 smoothly and satisfactorily between the position where the switch operation is performed.

  By the way, when repairing such a wristwatch, the operation member 13 of the push button switch 10 is first pulled out of the wristwatch case 1 with the back cover 3 removed from the lower portion of the wristwatch case 1, and the operation member 13 is removed. The retaining ring 15 attached to the front end 13a of the watch is brought into contact with the inner end 12b of the guide pipe 12 located on the inner surface of the watch case 1.

  As a result, the length at which the tip 13a of the operation member 13 protrudes into the wristwatch case 1 is the shortest, so that the tip 13a of the operation member 13 does not get in the way as shown in FIG. The watch module 4 can be easily and easily removed from the case 1, and the detached watch module 4 can be repaired satisfactorily.

  As described above, according to the pushbutton switch 10 of the wristwatch, the first position in the axial direction and the second position drawn from the first position can be moved in the through hole 11 of the wristwatch case 1. When the operating member 13 protrudes from the guide pipe 12 in the through hole 11 to the inside of the watch case 1 when the operating member 13 is in the first position, and the operating member 13 is in the second position in the axial direction. The first waterproof ring 16 located in the guide pipe 12 of the through hole 11 and the second waterproof ring located in the guide pipe 12 of the through hole 11 when the operation member 13 is in the first position in the axial direction. By providing the ring 17, waterproofness and airtightness can be ensured and assembly and disassembly operations can be easily performed without forming the through hole 11 of the watch case 1 long.

  That is, according to this pushbutton switch 10, when the operation member 13 is in the first position in the axial direction, the first waterproof ring 16 moves from the guide pipe 12 of the through hole 11 in the watch case 1 to the watch case 1. Even if it protrudes inside, the second waterproof ring 17 is located in the guide pipe 12 of the through hole 11, so that when the operation member 13 is in the first position in the axial direction, the second prevention ring 17. By this, airtightness and waterproofness can be ensured.

  When the operation member 13 is pulled out from the first position in the axial direction and is in the second position, the first waterproof ring 16 is located in the guide pipe 12 of the through hole 11 in the watch case 1. When the operation member 13 is in the second position in the axial direction, the first waterproof ring 16 can ensure airtightness and waterproofness.

  For this reason, even if the through-hole 11 of the watch case 1 is not formed long, airtightness and waterproofness can be ensured by any of the first and second waterproof rings 16, 17. By pulling out the operating member 13 from the first position to the second position at the time of repair, the tip 13a of the operating member 13 does not get in the way even when the operating member 13 is mounted in the guide pipe 12 of the through hole 11. In addition, since the watch module 4 can be easily assembled in the watch case 1 and the watch module 4 incorporated in the watch case 1 can be easily taken out, assembly work and disassembly work can be facilitated.

  In this case, when the operation member 13 is in the first position in the axial direction, the first waterproof ring 16 projects in the watch case 1 from the inside of the guide pipe 12 of the through hole 11. The operation member 13 is prevented from arbitrarily moving from the first position to the second position by being locked to the inner edge portion 12b of the guide pipe 12, which is the inner edge portion of the through hole 11 positioned inside. Can do.

  Thus, in a state where the operation member 13 is in the first position, the position where the first waterproof ring 16 abuts on the inner end portion 12b of the guide pipe 12 and the tip 13a of the operation member 13 press the switch plate 9. Thus, the operation member 13 can be smoothly and satisfactorily slid between the switch-operated position and the switch operability.

  Further, in this pushbutton switch 10, the first waterproof ring 16 and the second waterproof ring 17 are formed of different elastic materials, so that even if the operating member 13 is pushed into the first position, Further, even when the operation member 13 is pulled out to the second position, it is possible to ensure waterproofness and airtightness by any one of the first and second waterproof rings 16 and 17, and the operability of the operation member 13. Can be improved.

  For example, if the first waterproof ring 16 is formed of an elastic material harder than the second waterproof ring 17, when the operation member 13 is pulled out to the second position, the first waterproof ring 16 is more than the second waterproof ring 17. The hard first waterproof ring 16 can ensure waterproofness and airtightness, and the operation member 13 is pushed into the first position so that the second waterproof ring 17 is inserted into the guide pipe 12 of the through hole 11. When positioned, the operation member 13 can be slid smoothly and satisfactorily by the second waterproof ring 17 that is softer than the first waterproof ring 16.

  If the first waterproof ring 16 is made of an elastic material that is softer than the second waterproof ring 17, when the operation member 13 is pulled out to the second position, the first waterproof ring 16 is more than the second waterproof ring 17. The operation member 13 can be smoothly and satisfactorily slid by the soft first waterproof ring 16, and the operation member 13 is pushed into the first position to guide the second waterproof ring 17 to the through hole 11. When positioned in the pipe 12, waterproofness and airtightness can be secured by the second waterproof ring 17 that is harder than the first waterproof ring 16.

(Embodiment 2)
Next, a second embodiment in which the present invention is applied to a wristwatch will be described with reference to FIG. In addition, the same code | symbol is attached | subjected and demonstrated to the same part as Embodiment 1 shown by FIGS. 1-3.
As shown in FIG. 4, the wristwatch has a configuration in which two second waterproof rings 21 and 22 are provided on the operation member 13 of the pushbutton switch 20, and the other configuration is substantially the same as that of the first embodiment. .

  In this case, the operation member 13 is provided with the first mounting groove 13b for mounting the first waterproof ring 16 as in the first embodiment, and, as shown in FIG. Two second mounting grooves 23 and 24 for mounting the waterproof rings 21 and 22 are provided. That is, of the two second waterproof rings 21 and 22, one second waterproof ring 21 is mounted in the second mounting groove 23 located in the vicinity of the first waterproof ring 16, and the other The second waterproof ring 22 is mounted in the second mounting groove 24 located on the head 14 side of the operation member 13.

  The two second waterproof rings 21 and 22 are connected to the outer end surface of the head 14 and the watch case at the first position where the head 14 of the operation member 13 is inserted into the large-diameter hole 11a of the through hole 11. 1 is configured to slide in a state where the outer surface of the first pipe is located on the same plane and is in contact with the inner surface of the guide pipe 12 within the guide pipe 12 in the through hole 11. Yes.

  Of the two second waterproof rings 21, 22, one second waterproof ring 21 is a first position where the head 14 of the operation member 13 is inserted into the large-diameter hole 11 a of the through hole 11. When the head portion 14 is pushed into the large-diameter hole portion 11a and comes into contact with the flange portion 12a of the guide pipe 12, the head portion 14 projects from the guide pipe 12 into the wristwatch case 1.

  Further, the other second waterproof ring 22 has the head 14 in the large-diameter hole 11a from the first position where the head 14 of the operation member 13 is inserted into the large-diameter hole 11a of the through hole 11. When moving from the guide pipe 12 to the second position drawn out to the outside, the guide pipe 12 is configured to protrude into the large-diameter hole portion 11a.

  Also in this case, the two second waterproof rings 21 and 22 are made of an elastic material such as nitrile rubber, butyl rubber, silicone rubber, and urethane rubber, as in the first embodiment. Further, the two second waterproof rings 21 and 22 and the first waterproof ring 16 are formed of different elastic materials. For example, the two second waterproof rings 21 and 22 may be formed of a softer elastic material than the first waterproof ring 16, and conversely, the two second waterproof rings 21 and 22 are It may be formed of an elastic material harder than the first waterproof ring 16.

  According to such a pushbutton switch 20, there are the same effects as in the first embodiment, and the operation member 13 is provided with two second waterproof rings 21 and 22. Can also increase waterproofness and airtightness. That is, in this pushbutton switch 20, at the first position where the head 14 of the operation member 13 is inserted into the large-diameter hole 11a of the through hole 11, the outer end surface of the head 14 and the outer surface of the watch case 1 are Since the two second waterproof rings 21 and 22 are positioned in the guide pipe 12 in the through hole 11 and are in elastic contact with the inner surface of the guide pipe 12 when they are located on the same plane. The waterproofness and airtightness can be sufficiently increased as compared with those.

(Embodiment 3)
Next, a third embodiment in which the present invention is applied to a wristwatch will be described with reference to FIG. Also in this case, the same parts as those in the first embodiment shown in FIGS.
As shown in FIG. 5, the pushbutton switch 30 of this wristwatch has a configuration in which a spring member 31 is provided in the large-diameter hole portion 11 a of the through hole 11, and the other configuration is substantially the same as that of the first embodiment. .

  That is, as shown in FIG. 5, the spring member 31 is a coil spring, and is located in the large-diameter hole portion 11 a of the through hole 11, and the head portion 14 of the operation member 13 and the flange portion of the guide pipe 12. It arrange | positions between 12a, It is comprised so that the head 14 may be urged | biased in the direction pushed out toward the exterior of the large diameter hole part 11a in this state.

  In this case, in the spring member 31, the second waterproof ring 17 elastically contacts the inner surface of the guide pipe 12 at the first position where the head 14 of the operation member 13 is inserted into the large-diameter hole 11 a of the through hole 11. The spring force of the spring member 31 is set stronger than the elastic contact force of the second waterproof ring 17 when sliding.

  Further, the spring member 31 is pulled out from the first position where the head 14 of the operation member 13 is inserted into the large-diameter hole 11a of the through-hole 11 to the outside of the large-diameter hole 11a. When moving to the second position, the spring force of the spring member 31 is set to be weaker than the elastic deformation force that the first waterproof ring 16 inserts into the guide pipe 12.

  Thereby, when the operation member 13 pushes the head 14 with a finger against the spring force of the spring member 31 at the first position where the head 14 is inserted into the large-diameter hole portion 11a of the through hole 11. The tip 13a of the operation member 13 is configured to press the switch plate 9 of the timepiece module 4 to switch the switch plate 9.

  Further, when the operating member 13 is in the first position and is pressed against the spring force of the spring member 31, if the finger is released from the head 14, the head force is applied by the spring force of the spring member 31. The portion 14 is pushed outward in the large-diameter hole portion 11a, and the distal end 13a of the operation member 13 is automatically separated from the switch plate 9 of the timepiece module 4.

  In this case, even if the head 14 is pushed outward in the large-diameter hole portion 11 a by the spring force of the spring member 31, the first waterproof ring 16 is connected to the inner end portion 12 b of the guide pipe 12. The head 14 is configured to stop at the first position where the head 14 is inserted into the large-diameter hole 11 a of the through-hole 11.

  As described above, according to the pushbutton switch 30 of the wristwatch, in addition to the same effects as those of the first embodiment, the collar portion of the guide pipe 12 that is the outer edge portion located outside the through hole 11 of the wristwatch case 1 is provided. Since the spring member 31 is disposed between the head 12a of the operation member 13 and the first position where the head 14 of the operation member 13 is inserted into the large-diameter hole portion 11a of the through hole 11. The switch plate 9 can be switched by sliding the operation member 13 against the spring force of the spring member 31.

  In this case, in the spring member 31, the second waterproof ring 17 elastically contacts the inner surface of the guide pipe 12 at the first position where the head 14 of the operation member 13 is inserted into the large-diameter hole 11 a of the through hole 11. Since the spring force is set to be stronger than the elastic contact force, even if the operation member 13 is slid against the spring force of the spring member 31 to switch the switch plate 9, the operation member is operated by the spring force of the spring member 31. 13 can be automatically returned to the original position in the first position, so that the operability of the switch can be improved over that of the first embodiment.

  Further, the spring member 31 is pulled out from the first position where the head 14 of the operation member 13 is inserted into the large-diameter hole 11a of the through-hole 11 to the outside of the large-diameter hole 11a. When the first waterproof ring 16 is moved to the second position, the spring force is set to be weaker than the elastic deformation force that the first waterproof ring 16 is inserted into the guide pipe 12. Even when the inside of the large-diameter hole portion 11a is pushed outward, the head 14 is brought into contact with the inner end portion 12b of the guide pipe 12 so that the head portion 14 has the large-diameter hole portion 11a of the through-hole 11. The operation member 13 can be stopped at the first position where the operation member 13 is inserted.

  In the pushbutton switch 30 according to the third embodiment described above, the case where the operation member 13 is provided with one second waterproof ring 17 has been described. However, the present invention is not limited to this. For example, the embodiment shown in FIG. The present invention can also be applied to a configuration in which two second waterproof rings 21 and 22 are provided on the operation member 13 like the push button switch 20 of the second embodiment.

  In the above-described first to third 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, and may be applied to various watches such as a travel watch, an alarm clock, a table clock, and a wall clock. In addition, the present invention can be widely applied to waterproof electronic devices such as electronic cameras and mobile phones as well as watches.

DESCRIPTION OF SYMBOLS 1 Watch case 2 Watch glass 3 Back cover 4 Watch module 9 Switch board 10, 20, 30 Pushbutton switch 11 Through-hole 11a Large-diameter hole part 11b Small-diameter hole part 12 Guide pipe 12a Guide pipe collar part 12b Inner end part of guide pipe DESCRIPTION OF SYMBOLS 13 Operation member 14 Head 15 Retaining ring 16 1st waterproof ring 17 2nd waterproof ring 21 and 22 Two 2nd waterproof rings 31 Spring member

Claims (5)

In the through hole of the case, an operation member provided with a locking portion at the tip is provided so as to be movable between a first position in the axial direction and a second position pulled out from the first position. In pushbutton switch structure,
Mounted on the operation member, the operation member protrudes from the through hole into the case when the operation member is in the first position in the axial direction, and the operation member is in the second position in the axial direction. A first waterproof ring sometimes located in the through hole;
A pushbutton switch structure comprising: a second waterproof ring mounted on the operation member and positioned in the through hole when the operation member is in the first position in the axial direction.   The first waterproof ring is configured to protrude from the through hole into the case when the operating member is in the first position in the axial direction. The pushbutton switch structure according to claim 1, wherein the pushbutton switch structure is locked to an inner edge portion.   The pushbutton switch structure according to claim 1 or 2, wherein a plurality of the second waterproof rings are attached to the operation member along an axial direction thereof.   The push button switch structure according to any one of claims 1 to 3, wherein the first waterproof ring and the second waterproof ring are formed of different elastic materials. The operation member is provided with a head portion protruding from the through hole of the case toward the outside of the case, and between the head portion and an outer edge portion located on the outer side of the through hole. The push button switch structure according to any one of claims 1 to 4, wherein a spring member is disposed.

Images