JP2022023386A - Switch device and timepiece - Google Patents

Abstract

To provide a switch device with which it is possible to relieve impact shock from the outside and improve impact resistance, and a timepiece provided with the switch device.SOLUTION: A switch device comprises: a case body 10, with an open hole 10b provided therein; an operation member 15 including an operation shaft 17 inserted into the open hole 10b of this case body 10 and an operation head part 18 provided to an outer end of the operation shaft 17; and a protective buffering member 16 formed with a flexible synthetic resin and attached to the outer surface of the case body 10, the protective buffering member 16 being provided with a first accommodation part 20 for accommodating the operation head part 18 and having a bottom part 20a that the inner end face of the operation head part 18 faces. Therefore, when the operation head part 18 receives impact shock from the outside, the impact shock can be elastically damped by the bottom part 20a of the first accommodation part 20, thereby preventing impact shock from propagating to the case body 10.SELECTED DRAWING: Figure 3

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, in a wristwatch switch device, as described in Patent Document 1, a pipe is fitted into a through hole of a case body, and an operation shaft of an operation member is slidably inserted into the pipe to operate the operation member. It is known that the head is projected to the outside of the case body and the protruding operating head is protected by an exterior member.

Japanese Unexamined Patent Publication No. 2000-329869

In this type of switch device, the exterior member includes an interior portion formed of a hard synthetic resin and an exterior portion formed of a soft synthetic resin to cover the interior portion, and the interior portion and the exterior portion include the exterior member. The operation head of the operation member is arranged in the protective hole provided through the protective hole, and is configured to be attached to the case body by a plurality of screws.

In such a wristwatch switch device, since the protective hole of the exterior member is provided through the protective hole, when the operating head of the operating member arranged in the protective hole receives an impact from the outside, the operation is performed by the impact. The head hits the case body. Therefore, in such a switch device, there is a problem that the operating member is damaged or the parts inside the case body are damaged by an impact from the outside.

An object to be solved by the present invention is to provide a switch device capable of cushioning an external impact and improving impact resistance, and a timepiece including the switch device.

The present invention has elasticity with a case provided with a through hole, an operation shaft to be inserted into the through hole of the case, and an operation member having an operation head provided at the outer end of the operation shaft. The protective cushioning member is provided with a protective cushioning member attached to the outer surface of the case, and the protective cushioning member has a bottom portion facing the inner end surface of the operating head and a storage portion for accommodating the periphery of the operating head. It is a switch device characterized by being equipped.

According to the present invention, it is possible to cushion an impact from the outside, thereby improving the impact resistance.

It is an enlarged front view which showed one Embodiment of the wristwatch to which this invention was applied. It is an enlarged perspective view of the wristwatch shown in FIG. FIG. 3 is an enlarged cross-sectional view showing a main part of the wristwatch shown in FIG. 1 when viewed from the arrow AA. FIG. 2 is an enlarged side view showing a state in which a part of the operating members is removed in the wristwatch shown in FIG. 2. FIG. 2 is an exploded perspective view of a main part of the wristwatch shown in FIG. 2 in which a state in which a protective cushioning member is attached to a case body is enlarged. It is an enlarged perspective view which showed the case body shown in FIG. The protective cushioning member shown in FIG. 5 is shown, (a) is an enlarged perspective view showing the appearance thereof, and (b) is an enlarged perspective view showing the inner surface side thereof. FIG. 3 is an enlarged cross-sectional view showing a main part of the wristwatch shown in FIG. 1 when viewed from the arrow BB. It is an enlarged front view which showed the screw member shown in FIG.

Hereinafter, an embodiment of a wristwatch to which the present invention is applied will be described with reference to FIGS. 1 to 9.
This wristwatch includes a wristwatch case 1 as shown in FIGS. 1 and 2. A band attachment portion 3 to be described later is provided on the 12 o'clock side and the 6 o'clock side of the wristwatch case 1, respectively, to which the watch band 2 is attached.

As shown in FIGS. 1 and 2, a switch device 4 is provided on the 2 o'clock side to the 4 o'clock side of the wristwatch case 1, and the 8 o'clock side and the 10 o'clock side of the wristwatch case 1 are provided, respectively. A push button switch 5 is provided. Further, a top switch 6 is provided on the 6 o'clock side of the wristwatch case 1. As shown in FIG. 3, a watch glass 7 is provided in the upper opening of the wristwatch case 1 via a glass packing 7a. A back cover 8 is attached to the lower portion of the wristwatch case 1 via a waterproof packing 8a.

As shown in FIG. 3, a watch module 9 is provided inside the watch case 1. Although not shown, the clock module 9 includes a clock movement that moves a pointer to indicate the time, a display unit that electro-optically displays information such as the time, and a circuit unit that electrically controls and drives these. It is equipped with various parts necessary for the clock function. In this case, as shown in FIG. 3, a dial 9a is arranged on the upper surface of the clock module 9, and a parting member 9b is provided on the outer peripheral portion of the upper surface of the dial 9a.

By the way, as shown in FIGS. 1 to 3, the wristwatch case 1 includes a case main body 10 and an exterior member 11. The case body 10 is made of a highly rigid polyamide resin containing carbon fiber or glass fiber, and is light in weight and has high strength. A metal reinforcing member 10a is embedded in the case body 10.

As shown in FIG. 6, band mounting portions 3 are provided on the 12 o'clock side and the 6 o'clock side of the case body 10, respectively. As shown in FIGS. 1 and 2, the exterior member 11 has a first cover 12 which is arranged so as to cover the upper part of the case body 10, and a band attachment portion between the 12 o'clock side and the 6 o'clock side of the case body 10. 3 is provided with two second covers 13 arranged to cover it.

As shown in FIGS. 1 and 2, the first cover 12 is formed of a metal such as stainless steel or titanium in a substantially ring shape. The two second covers 13 are formed of a soft synthetic resin such as urethane resin. In this case, the second cover 13 on the 6 o'clock side is provided with a switch opening 13a for exposing the upper surface switch 6. The first cover 12 and the second cover 13 are attached to the band attachment portion 3 of the case body 10 by a plurality of first screw members 14 on the 12 o'clock side and the 6 o'clock side.

On the other hand, as shown in FIGS. 1 to 3, the switch device 4 is provided with three push button switches, and is provided from the 2 o'clock side to the 4 o'clock side. That is, the switch device 4 is provided on the three operating members 15 provided on the 2 o'clock side, 3 o'clock side, and 4 o'clock side of the case body 10, and on the outer surface of the case body 10 from the 2 o'clock side to the 4 o'clock side. It is provided with one protective cushioning member 16 for protecting the three operating members 15.

As shown in FIGS. 3 and 6, each of the three operating members 15 is inserted into the three through holes 10b provided on the 2 o'clock side, 3 o'clock side, and 4 o'clock side of the case body 10, respectively. An operation head 18 provided at the outer end of the operation shaft 17 and arranged outside the case body 10 and a spring for urging the operation head 18 toward the outside of the case body 10. A member 19 and a member 19 are provided.

In this case, as shown in FIGS. 3, 5, and 6, the outer peripheral surface of the case body 10 corresponding to each of the operating members 15 on the 2 o'clock side and the 4 o'clock side has a cylindrical shape protruding outward. Guide protrusions 10c are provided on the same axis in each of the through holes 10b on the 2 o'clock side and the 4 o'clock side of the case body 10. Further, the operation shaft 17 of the operation member 15 is formed so that the outer diameter thereof is substantially the same as the inner diameter of the through hole 10b of the case body 10. The length of the operation shaft 17 in the axial direction is formed to be longer than the length of the through hole 10b of the case body 10.

As a result, as shown in FIG. 3, the operation shaft 17 is configured such that the inner end portion protrudes inside the case main body 10 and the outer end portion protrudes outside the case main body 10. In this case, the operation shaft 17 is configured such that a retaining member 17a such as an E-ring is attached to an inner end portion protruding inside the case body 10 so as not to be ejected to the outside of the case body 10 by the retaining member 17a. ing.

Further, as shown in FIG. 3, a plurality of waterproof rings 17b are provided on the outer periphery of the operation shaft 17. The plurality of waterproof rings 17b are configured to slide with their outer periphery in contact with the inner peripheral surface of the through hole 10b of the case body 10. As a result, the plurality of waterproof rings 17b are configured to be waterproof between the outer peripheral surface of the operation shaft 17 and the inner peripheral surface of the through hole 10b of the case body 10.

As shown in FIGS. 2 and 3, the operation head 18 is formed in a substantially disk shape. The operation head 18 has a structure in which a recess 18a is provided on the inner end surface on the case body 10 side, and an outer end portion of the operation shaft 17 is integrally provided on the inner surface of the recess 18a. The operation head 18 is formed so that its outer diameter is sufficiently larger than the outer diameter of the operation shaft 17 and smaller than the size in the front / back direction (thickness direction) of the case body 10.

As shown in FIG. 3, the spring member 19 is, for example, a coil spring, and the inner diameter is larger than the outer diameter of the operation shaft 17, and the outer diameter is the same as or larger than the outer diameter of the guide protrusion 10c of the case body 10. Is also formed in a slightly smaller size. As a result, in a state where the spring member 19 is arranged on the outer periphery of the operation shaft 17, one end thereof is in contact with the guide protrusion 8b of the case body 10, and the other end thereof is on the inner surface of the recess 18a of the operation head 18. It is configured to be in contact with the bullet and to urge the operating head 18 in a direction of pushing it toward the outside of the case body 10.

On the other hand, as shown in FIGS. 1 to 5, the protective cushioning member 16 is made of an elastic synthetic resin, for example, a urethane resin having high hardness. That is, the urethane resin ranges from A rank having a low hardness to E rank having a high hardness, and among these, a urethane resin having a hardness of C rank to E rank is preferable, and in this embodiment, D having a high hardness having a cushioning property is preferable. Uses rank urethane resin.

As shown in FIGS. 1 to 5, the protective cushioning member 16 is formed to have a thick overall wall thickness, and is arranged on the outer peripheral surface of the case body 10 from the 2 o'clock side to the 4 o'clock side. The protective cushioning member 16 includes a first storage unit 20 that stores the operation head 18 of the operation member 15 on the 4 o'clock side, and a second storage unit 21 that stores the operation head 18 of the operation member 15 on the 3 o'clock side. And a third storage unit 22 for storing the operation head 18 of the operation member 15 on the 2 o'clock side are provided.

Of these first to third storage units 20 to 22, the first and third storage units 20 and 22 on the 4 o'clock side and the 2 o'clock side are case bodies as shown in FIGS. 2 to 5 and 7. It is formed in a substantially cylindrical concave shape having bottoms 20a and 22a facing the inner end faces of the operation head 18 located on the 10 side. The first and third storage portions 20 and 22 and the bottom portions 20a and 22a are integrally formed. Each of the bottom portions 20a and 22a of the first and third storage portions 20 and 22 is configured so that the inner end surface of the operation head 18 elastically contacts and cushions the impact of the operation head 18. ..

That is, as shown in FIG. 3, each of the bottom portions 20a and 22a of the first and third storage portions 20 and 22 cushions the impact of the operating head 18, and the impact of the operating head 18 is applied to the case body 10. It is configured not to be transmitted. In this case, each of the bottom portions 20a and 22a of the first and third storage portions 20 and 22 has a wall thickness equal to or thicker than the wall thickness of the outer peripheral walls of the first and third storage portions 20 and 22. It is formed.

Further, as shown in FIGS. 3 to 7, shaft insertion holes 20b and 22b into which the operation shaft 17 of the operation member 15 is inserted are provided in the bottom portions 20a and 22a of the first and third storage portions 20 and 22, respectively. It is provided so as to correspond to each through hole 10b of the case body 10 on the same axis. The inner diameters of the shaft insertion holes 20b and 22b of the first and third storage portions 20 and 22 are approximately the same as the outer diameter of the guide protrusion 10c of the case body 10, and are formed to be larger than the inner diameter of the through hole 10b. The length in the axial direction is formed to be about twice as long as the length of the guide protrusion 10c.

As a result, as shown in FIG. 3, each of the shaft insertion holes 20b and 22b of the first and third storage portions 20 and 22 is inserted into the guide protrusion 10c of the case body 10 so that the case body can be inserted into the case body. It is configured to regulate and position the position of the protective cushioning member 16 with respect to 10. Further, in each of the shaft insertion holes 20b and 22b, one end of the spring member 19 is inserted into the inside thereof and elastically contacts the tip of the guide protrusion 10c of the case body 10, thereby restricting the position of one end of the spring member 19. Is configured to hold.

On the other hand, of the first to third storage units 20 to 22, the second storage unit 21 on the 3 o'clock side is from the first and third storage units 20 and 22 as shown in FIGS. 2, 4 to 7. Is also formed into a small diameter, almost cylindrical shape. That is, the second storage unit 21 is configured to store the operation head 18 having a size smaller than the outer diameter of each operation head 18 on the 4 o'clock side and the 2 o'clock side. In this case, the second storage portion 21 on the 3 o'clock side is formed in a substantially cylindrical shape having no bottom portion, and is configured so that the through hole 10b on the 3 o'clock side of the case body 10 is exposed to the outside.

By the way, as shown in FIGS. 1 and 2, each of the operating members 15 on the 2 o'clock side, the 3 o'clock side and the 4 o'clock side is provided from the center of the inside of the case body 10 toward the radial direction. In this case, as shown in FIG. 3, the operation member 15 on the 4 o'clock side is integrally provided with the operation shaft 17 at the center of the inner surface of the recess 18a of the operation head 18. As a result, as shown in FIGS. 4 and 7, the first storage portion 20 is provided with a shaft insertion hole 20b at the center of the bottom portion 20a.

Further, as shown in FIG. 3, the operating member 15 on the 4 o'clock side has an operating shaft 17 that rises in the vertical direction, which is the front and back direction of the case body 10, from the inside side to the outside side of the case body 10. Is inclined to. That is, the operating shaft 17 of the operating member 15 is inserted into the through hole 10b on the 4 o'clock side of the case body 10 in a state of being tilted in the vertical direction at a predetermined tilt angle, for example, a tilt angle of 15 °. In this case, the through hole 10b on the 4 o'clock side of the case main body 10 is provided so as to be inclined in the vertical direction like the operation shaft 17.

Although not shown, the operation member 15 on the 2 o'clock side is integrally provided with an operation shaft 17 at a position inclined downward from the central portion on the inner surface of the recess 18a of the operation head 18. As a result, as shown in FIGS. 4 and 7, the third storage portion 22 is provided with a shaft insertion hole 22b at a position biased downward from the center of the bottom portion 22a. Further, in the operation member 15 on the 2 o'clock side, the operation shaft 17 is tilted in the vertical direction at a predetermined inclination angle, for example, an inclination angle of 15 °, similarly to the operation shaft 17 on the 4 o'clock side. Also in this case, the through hole 10b on the 2 o'clock side of the case main body 10 is also provided so as to be inclined in the vertical direction like the operation shaft 17 on the 2 o'clock side.

Further, although not shown, the operation member 15 on the 3 o'clock side is integrally provided with the operation shaft 17 at a position inclined downward from the central portion on the inner surface of the recess 18a of the operation head 18. The operation member 15 on the 3 o'clock side is different from the operation shafts 17 on the 4 o'clock side and the 2 o'clock side, and the operation shaft 17 is substantially parallel to the front and back surfaces of the case body 10 and is on the 3 o'clock side of the case body 10. It is inserted into the through hole 10b of.

As a result, on the outer surface of the case body 10 on the 3 o'clock side, as shown in FIG. 4, the through hole 10b on the 3 o'clock side is located at a position biased downward from the portion corresponding to the central portion of the second storage portion 21. It is provided. The through hole 10b on the 3 o'clock side is provided substantially parallel to the front and back surfaces of the case body 10 like the operation shaft on the 3 o'clock side.

As shown in FIGS. 1 to 5 and 7, each of the first to third storage portions 20 to 22 has a structure in which notches 20c to 22c are provided in the upper semicircular portion of the outer peripheral end. There is. Therefore, in the first to third storage portions 20 to 22, the lower semicircular portion of the outer peripheral end is substantially the same height as the outer end surface of the stored operation head 18, and the upper semicircular portion is cut. The notches 20c to 22c are formed one step lower than the outer end surface of the operating head 18. As a result, the first to third storage units 20 to 22 are configured so that the stored operation head 18 can be easily pressed.

Further, as shown in FIGS. 4 to 7, the protective cushioning member 16 has bottom portions 20a and 22a of the first storage portion 20 on the 4 o'clock side and the third storage portion 22 on the 2 o'clock side located on both sides. Each is configured to be fastened to the outer surface of the case body 10 by a second screw member 23 which is a fastening member. That is, screw mounting holes 24 are provided in the bottom portions 20a and 22a of the first storage portion 20 and the third storage portion 22, respectively. Further, the case main body 10 is provided with a second screw hole 25 into which the second screw member 23 is screwed so as to correspond to each screw mounting hole 24 on the same axis.

In this case, as shown in FIGS. 4 and 7 (a), the heads of the second screw members 23 are arranged in each of the screw mounting holes 24 of the first storage portion 20 and the third storage portion 22. It has a diameter hole portion 24a and a small diameter hole portion 24b into which the screw portion of the second screw member 23 is inserted. Of these screw mounting holes 24, the screw mounting hole 24 of the first storage portion 20 is diagonally downward from the shaft insertion hole 20b of the bottom portion 20a toward the 5 o'clock side at a portion corresponding to the recess 18a of the operation head 18. It is located on the side. The screw mounting hole 24 of the third storage portion 22 is provided at a position corresponding to the recess 18a of the operation head 18 so as to be diagonally upward from the shaft insertion hole 22b of the bottom portion 22a toward the 1 o'clock side.

Along with this, of the second screw holes 25 of the case body 10, the second screw holes 25 corresponding to the first storage portion 20 are through holes 10b of the case body 10 as shown in FIGS. 4 to 7. It is located diagonally downward toward the 5 o'clock side and is provided so as to correspond to the screw mounting hole 24 of the first storage portion 20 on the same axis. The second screw hole 25 corresponding to the third storage portion 22 is located diagonally upward from the through hole 10b of the case body 10 toward the 1 o'clock side, and is on the same axis as the screw mounting hole 24 of the third storage portion 22. It is provided to correspond to.

As a result, as shown in FIGS. 4 and 5, the bottom portions 20a and 22a of the first storage portion 20 on the 4 o'clock side and the third storage portion 22 on the 2 o'clock side of the protective cushioning member 16 have second screws, respectively. By being attached to the outer surface of the case body 10 by the member 23, the end portion on the 5 o'clock side of the first storage portion 20 on the 4 o'clock side and the end portion on the 1 o'clock side of the third storage portion 22 on the 2 o'clock side. And are configured so that they do not turn over with respect to the case body 10.

Further, as shown in FIGS. 5 to 8, the protective cushioning member 16 is fastened by a fitting mounting portion 26 provided on both the outer surface of the case body 10 and the inner surface of the protective cushioning member 16 facing the outer surface. It is configured to be fastened to the outer surface of the case body 10 by the third screw member 27, which is a member, in the front / back direction (upper / lower surface direction) of the case body 10. Further, the third screw member 27 and the operating members 15 on the 2 o'clock side, the 3 o'clock side, and the 4 o'clock side are the outer surfaces (outer peripheral direction) of the case main body 10 as shown in FIGS. 1, 2, 5, and 8. ) Are arranged so that they do not overlap.

In this case, as shown in FIGS. 5 to 7, the fitting mounting portion 26 is provided on both sides of the second storage portion 21 in the intermediate portion of the first to third storage portions 20 to 22 of the protective cushioning member 16, that is, the first. , The second storage section 20 and 21 and the second and third storage sections 21 and 22 are provided at two locations, respectively. These two fitting mounting portions 26 are fastened to each other by the third screw member 27 in the vertical direction, which is the front and back direction of the case body 10, and the protective cushioning member 16 is pressed against the outer surface of the case body 10 to be mounted. It is configured.

That is, as shown in FIGS. 5 to 8, the fitting mounting portion 26 is located between the fixed protrusion 28 provided so as to project from the outer surface of the case body 10 and the substantially intermediate portion in the vertical direction on the inner surface of the protective cushioning member 16. The fitting recess 29 provided and fitted with the fixed protrusion 28 and the protective cushioning member 16 located above and below the fitting recess 29 are provided so as to project from each other and face the upper and lower surfaces of the fixed protrusion 28. It is provided with two mounting protrusions 30 and 31.

As a result, as shown in FIGS. 5 to 8, when the fixed protrusion 28 of the case body 10 is fitted into the fitting recess 29 of the protective cushioning member 16, the fitting mounting portion 26 of the fitting mounting portion 28 has a fixed protrusion 28. The mounting protrusions 30 on the upper side of the protective cushioning member 16 are arranged to face each other on the upper side, and the mounting protrusions 31 on the lower side of the protective cushioning member 16 are arranged to face each other on the lower side of the fixed protrusions 28. It is configured in.

In this case, as shown in FIGS. 6 to 8, the fixing protrusion 28 of the case body 10 is provided with a third screw hole 28a penetrating in the vertical direction, which is the front and back direction of the case body 10. In the mounting protrusion 30 located above the fitting recess 29 of the protective cushioning member 16, the first screw insertion hole 32 penetrates in the vertical direction corresponding to the same axis as the third screw hole 28a of the fixing protrusion 28. It is provided. Further, in the mounting protrusion 31 located below the fitting recess 29 of the protective cushioning member 16, the second screw insertion hole 31a moves up and down on the same axis as the third screw hole 28a of the fixing protrusion 28. It is provided without penetrating in the direction.

As shown in FIGS. 8 and 9, the third screw member 27 includes a head portion 27a, a neck portion 27b, a threaded portion 27c, and a non-threaded portion 27d. In the third screw member 27, the head portion 27a and the neck portion 27b are inserted into the first screw insertion hole 32 of the upper mounting protrusion portion 30, and the screw portion 27c is screwed into the third screw hole 28a of the fixing protrusion portion 28. Then, with the non-threaded portion 27d inserted into the second screw insertion hole 31a of the lower mounting protrusion 31, the upper and lower mounting protrusions 30 and 31 are fastened to the fixing protrusion 28 to provide a protective cushioning member 16. Is configured to be pressed against the outer surface of the case body 10 to be attached.

In this case, as shown in FIGS. 8 and 9, the head 27a is formed so that its outer diameter is larger than the outer diameter of the neck portion 27b and the axial length is shorter than the length of the neck portion 27b. The outer diameter of the neck portion 27b is larger than the outer diameter of the threaded portion 27c, and the axial length is formed to be substantially the same as the length of the threaded portion 27c. The non-threaded portion 27d is formed in a simple rod shape, the outer diameter thereof is formed to be smaller than the outer diameter of the threaded portion 27c, that is, the valley diameter of the thread groove, and the axial length is the length of the neck portion 27b and the threaded portion 27c. It is formed to be almost the same length as.

Further, as shown in FIG. 8, the first screw insertion hole 32 of the upper mounting protrusion 30 has a large diameter hole portion 32a into which the head 27a of the third screw member 27 is inserted and arranged, and the third screw. A small-diameter hole portion 32b into which the neck portion 27b of the member 27 is inserted is provided. In this case, the large-diameter hole portion 32a is formed so that the length in the axial direction is substantially the same as the length in the axial direction of the head 27a. The small-diameter hole portion 32b is formed so that the axial length is slightly longer than the axial length of the neck portion 27b so that the neck portion 27b does not abut on the fixed protrusion 28 when the third screw member 27 is tightened. Is formed in.

As shown in FIG. 8, the inner diameter of the second screw insertion hole 31a of the lower mounting protrusion 31 is smaller than the inner diameter of the third screw hole 28a of the fixed protrusion 28, that is, the inner diameter of the thread groove. It is formed to have the same size as the outer diameter of the non-threaded portion 27d of the third screw member 27. The second screw insertion hole 31a is a hole that does not penetrate the lower side of the lower mounting protrusion 31, and is formed so that the axial length is longer than the axial length of the non-threaded portion 27d, and the third screw is formed. When the member 27 is tightened, the tip of the non-threaded portion 27d is formed so as not to come into contact with the inner portion of the second screw insertion hole 31a.

As a result, as shown in FIG. 8, the protective cushioning member 16 is on the upper side of the upper and lower mounting protrusions 30 and 31 located on both sides of the second storage portion 21 by tightening the two third screw members 27. The mounting protrusion 30 is fixed to the fixed protrusion 28, the lower mounting protrusion 31 is fastened to the fixed protrusion 28, and the two fitting mounting portions 26 located on both sides of the second storage portion 21 are vertically oriented. The protective cushioning member 16 is pressed against the outer surface of the case body 10 so that the upper and lower edges of the protective cushioning member 16 do not turn over with respect to the case body 10.

That is, as shown in FIG. 8, in the protective cushioning member 16, the head portion 27a and the neck portion 27b of the third screw member 27 screwed to the fixing projection portion 28 of the case body 10 are on the upper mounting projection portion 30. The protective cushioning member 16 is inserted into the first screw insertion hole 32, the upper mounting protrusion 30 is fixed to the fixing protrusion 28 of the case body 10, and the protective cushioning member 16 is pressed against the outer surface of the case body 10. It is configured so that the turning of the edge portion on the upper side of the third screw member 27 is prevented by the head portion 27a and the neck portion 27b of the third screw member 27.

Further, as shown in FIG. 8, in the protective cushioning member 16, the non-threaded portion 27d of the third screw member 27 screwed to the fixed protrusion 28 of the case body 10 is the second of the lower mounting protrusion 31. The protective cushioning member 16 is inserted into the screw insertion hole 31a, the lower mounting protrusion 31 is fastened to the fixed protrusion 28 of the case body 10, and the protective cushioning member 16 is pressed against the outer surface of the case body 10. It is configured so that the turning of the edge portion on the lower side of the third screw member 27 is prevented by the non-threaded portion 27d of the third screw member 27.

Next, a case of assembling such a wristwatch will be described.
In this case, first, the watch glass 7 is attached to the upper opening of the case body 10 together with the glass packing 7a. In this state, the protective cushioning member 16 is attached to the outer peripheral surface of the case body 10 from the 2 o'clock side to the 4 o'clock side.

At this time, of the first to third storage portions 20 to 22 of the protective buffer member 16, both sides of the second storage portion 21 located in the middle portion, that is, between the first and second storage portions 20, 21 and the second. The two fitting mounting portions 26 located between the third storage portions 21 and 22 are fitted to each other. That is, the two fixing protrusions 28 of the case body 10 are fitted into the two fitting recesses 29 of the protective cushioning member 16, respectively. Then, the mounting protrusions 30 and 31 of the two fitting mounting portions 26 are arranged above and below the two fixing protrusions 28, respectively.

Then, in each of the third screw holes 28a of the two fixing protrusions 28, each of the first screw insertion holes 32 of the upper two mounting protrusions 30 and each second screw insertion hole 31a of the lower two mounting protrusions 31 And are associated with each other on the same axis. As a result, the protective cushioning member 16 is positioned and arranged on the outer surface of the case body 10. At this time, the shaft insertion hole 20b of the bottom 20a in the first storage portion 20 on the 4 o'clock side corresponds to the through hole 10b on the 4 o'clock side of the case body 10, and the guide protrusion 10c on the 4 o'clock side of the case body 10 is the first. 1 It is inserted into the shaft insertion hole 20b of the storage portion 20.

Similarly, the shaft insertion hole 22b of the bottom portion 22a in the third storage portion 22 on the 2 o'clock side corresponds to the through hole 10b on the 2 o'clock side of the case body 10, and the guide protrusion 10c on the 2 o'clock side of the case body 10 is the second. 3 It is inserted into the shaft insertion hole 22b of the bottom portion 22a of the storage portion 22. As a result, the protective cushioning member 16 has guide protrusions 10c on the 4 o'clock side and the 2 o'clock side of the case body 10 in the shaft insertion hole 20b of the first storage portion 20 and the shaft insertion hole 22b of the third storage portion 22. By inserting each of them, the positions of the protective cushioning member 16 in the vertical direction and the horizontal direction are restricted, and the protective cushioning member 16 is accurately positioned on the outer surface of the case body 10.

Further, at this time, each screw mounting hole 24 provided in the bottom 20a of the first storage portion 20 on the 4 o'clock side and the bottom portion 22a of the third storage portion 22 on the 2 o'clock side is the 4 o'clock side of the case body 10. Each second screw hole 25 with the 2 o'clock side corresponds to each on the same axis. Further, the through hole 10b of the case body 10 corresponding to the second storage portion 21 on the 3 o'clock side is exposed to the outside of the protective cushioning member 16 through the second storage portion 21.

In this state, the bottom portion 20a of the first storage portion 20 and the bottom portion 22a of the third storage portion 22 are attached to the case body 10 by the second screw member 23, respectively, and the two fitting attachment portions 26 are attached to the third screw member, respectively. The protective cushioning member 16 is attached to the outer surface of the case body 10 by fastening the case body 10 in the front-back direction (vertical direction) by 27.

In this case, when the bottom portion 20a of the first storage portion 20 and the bottom portion 22a of the third storage portion 22 are attached to the case main body 10, the bottom portion 20a of the first storage portion 20 and the bottom portion 22a of the third storage portion 22 are used. The second screw member 23 is inserted into each of the provided screw mounting holes 24, and the second screw member 23 is screwed into each of the second screw holes 25 of the case body 10 and tightened.

Then, the head of each second screw member 23 is arranged in the large diameter hole portion 24a of each screw mounting hole 24, and presses the small diameter hole portion 24b of each screw mounting hole 24, respectively. As a result, the protective cushioning member 16 is attached to the outer surface of the case body 10 and is located on each end side of the first and third storage portions 20 and 22 of the protective cushioning member 16, that is, on the 5 o'clock side and the 1 o'clock side. It is possible to prevent the edges of the protective cushioning member 16 on both ends from being turned over.

That is, the second screw hole 25 on the 4 o'clock side with respect to the first storage portion 20 is directed from the through hole 10b on the 4 o'clock side of the case body 10 toward the 5 o'clock side at the portion corresponding to the recess 18a of the operation head 18. It is located diagonally below. Further, the second screw hole 25 on the 2 o'clock side corresponding to the third storage portion 22 is located on the 1 o'clock side from the through hole 10b on the 2 o'clock side of the case body 10 at the portion corresponding to the recess 18a of the operation head 18. It is located diagonally above.

As a result, when the protective cushioning member 16 is attached to the outer surface of the case body 10 by the second screw member 23, the end portion on the 5 o'clock side of the bottom portion 20a of the first storage portion 20 and the third storage portion 22 The 1 o'clock side end of the bottom 22a is fixed to the case body 10. Therefore, in the protective cushioning member 16, the 5 o'clock side end portion of the 1 o'clock side first storage portion 20 and the 1 o'clock side end portion of the 2 o'clock side third storage portion 22 are formed in the case body 10. I can't turn it over.

Further, when the two fitting mounting portions 26 are fastened to each other by the third screw member 27 in the vertical direction of the case body 10, each screw portion 27c of the two third screw members 27 is attached to the upper two mounting protrusions. It is inserted into each first screw insertion hole 32 of the portion 30 and screwed into each third screw hole 28a of the two fixing protrusions 28 of the case body 10.

At this time, as each threaded portion 27c of the two third threaded members 27 is screwed in, each threaded portion 27c is gradually screwed into each third screw hole 28a, and each non-threaded portion 27d is on the lower side. The two mounting protrusions 31 are gradually inserted into the second screw insertion holes 31a, and each neck portion 27b is gradually inserted into the small diameter hole portion 32b of each first screw insertion hole 32 of the upper mounting protrusion portion 30.

Then, when the two third screw members 27 are each tightened and each screw portion 27c is screwed into each third screw hole 28a, each non-threaded portion 27d has two lower mounting protrusions 31. Each of the second screw insertion holes 31a is inserted and arranged, each neck portion 27b is inserted and arranged in each small diameter hole portion 32b of each first screw insertion hole 32, and each head portion 27a is each first. It is inserted and arranged in the large-diameter hole portion 32a of the screw insertion hole 32, respectively.

Therefore, by tightening the two third screw members 27, the two upper and lower mounting protrusions 30 and 31 located on both sides of the second storage portion 21 are attached to the fixed protrusions 28, respectively, and the second storage portion 21 is stored. Two fitting mounting portions 26 located on both sides of the portion 21 are fastened in the vertical direction. As a result, the protective cushioning member 16 is pressed against the outer surface of the case body 10 and attached. In this state, the two third screw members 27 prevent the upper and lower edges of the protective cushioning member 16 from being turned over with respect to the case body 10.

That is, in the protective cushioning member 16, the upper mounting protrusion 30 is fixed to the fixing protrusion 28 of the case body 10 by the head portion 27a and the neck portion 27b of the third screw member 27, and the protective cushioning member 16 is the case body 10. Since it is pressed against the outer surface of the protective cushion member 16, the turning of the edge portion on the upper side of the protective cushioning member 16 is surely prevented by the head portion 27a and the neck portion 27b of the third screw member 27.

Further, in the protective cushioning member 16, the lower mounting protrusion 31 is attached to the fixed protrusion 28 of the case body 10 by the non-threaded portion 27d of the third screw member 27, and the protective cushioning member 16 is attached to the case body 10. Since it is pressed against the outer surface, the turning of the edge portion on the lower side of the protective cushioning member 16 is surely prevented by the non-threaded portion 27d of the third threaded member 27.

Then, the three operation members 15 of the switch device 4, the operation members (not shown) of the push button switches 5 on the 8 o'clock side and the 10 o'clock side, and the operation members (not shown) of the top surface switch 6 are respectively the case main body. Attach to 10. In this case, when the three operating members 15 of the switch device 4 are attached, the operating shafts 17 of the operating members 15 on the 4 o'clock side and the 2 o'clock side are protected by the first and third storage portions 20 of the cushioning member 16. , 22 are inserted into the through holes 10b of the case body 10 from the shaft insertion holes 20b and 22b, and the operation shaft 17 on the 3 o'clock side is inserted into the through holes 10b of the case body 10 from the second storage portion 21 of the protective cushioning member 16. To insert into.

That is, when the operation member 15 on the 4 o'clock side is attached to the case body 10 among the three operation members 15, a plurality of waterproof rings 17b are attached to the outer peripheral surface of the operation shaft 17 in advance, and the outer circumference of the operation shaft 17 is attached. The spring member 19 is arranged in the spring member 19. In this state, the operation shaft 17 on the 4 o'clock side is inserted into the shaft insertion hole 20b of the bottom 20a of the first storage portion 20 from the outside of the first storage portion 20 on the 4 o'clock side of the protective cushioning member 16, and the case body 10 is inserted. It is inserted into the through hole 10b on the 4 o'clock side.

Then, a plurality of waterproof rings 17b provided on the outer peripheral surface of the operation shaft 17 on the 4 o'clock side are inserted into the through holes 10b of the case body 10, and one end of the spring member 19 is inserted into the shaft of the first storage portion 20. It is inserted into the insertion hole 20b and spring-contacted with the guide protrusion 10c of the case body 10. Then, the other end of the spring member 19 comes into contact with the inner surface of the operating head 18. At this time, since one end of the spring member 19 is inserted into the shaft insertion hole 20b of the first storage portion 20, the spring member 19 is position-controlled and held.

In this state, when the operation head 18 on the 4 o'clock side is pushed into the first storage portion 20, the inner end portion of the operation shaft 17 protrudes into the case main body 10. A retaining member 17a such as an E-ring is attached to the inner end of the protruding operating shaft 17. As a result, even if the operating head 18 of the operating member 15 on the 4 o'clock side is pushed out toward the outside of the case body 10 by the spring force of the spring member 19, the retaining member 17a comes into contact with the inner surface of the case body 10. The operating member 15 on the 4 o'clock side is attached to the case body 10 without coming out of the case body 10.

Similarly, the operation member 15 on the 2 o'clock side is attached to the case body 10. Also at this time, a plurality of waterproof rings 17b are attached to the outer peripheral surface of the operating shaft 17 in advance, and the spring member 19 is arranged on the outer peripheral surface of the operating shaft 17. In this state, the operation shaft 17 on the 2 o'clock side is inserted into the shaft insertion hole 22b of the bottom portion 22a of the third storage portion 22 from the outside of the third storage portion 22 on the 2 o'clock side of the protective cushioning member 16, and the case body 10 is inserted. It is inserted into the through hole 10b on the 2 o'clock side of.

Then, a plurality of waterproof rings 17b provided on the outer peripheral surface of the operation shaft 17 on the 2 o'clock side are inserted into the through holes 10b on the 2 o'clock side of the case body 10, and one end of the spring member 19 is stored in the third position. It is inserted into the shaft insertion hole 22b of the portion 22 and is brought into contact with the guide protrusion 10c of the case body 10. Then, the other end of the spring member 19 comes into contact with the inner surface of the operating head 18. Also at this time, since one end of the spring member 19 is inserted into the shaft insertion hole 22b of the third storage portion 22, the spring member 19 is position-controlled and held.

In this state, when the operation head 18 on the 2 o'clock side is pushed into the third storage portion 22, the inner end portion of the operation shaft 17 on the 2 o'clock side is inside the case body 10 as in the operation member 15 on the 4 o'clock side. Protruding to. A retaining member 17a such as an E-ring is attached to the inner end of the protruding operating shaft 17. As a result, even if the operating head 18 of the operating member 15 on the 2 o'clock side is pushed out toward the outside of the case body 10 by the spring force of the spring member 19, the retaining member 17a comes into contact with the inner surface of the case body 10. The operating member 15 on the 2 o'clock side is attached to the case body 10 without coming out of the case body 10.

Further, when the operation member 15 on the 3 o'clock side is attached to the case body 10, a plurality of operation members 15 on the 3 o'clock side are previously attached to the outer peripheral surface of the operation shaft 17 on the 3 o'clock side in the same manner as the operation members 15 on the 4 o'clock side and the 2 o'clock side. A waterproof ring 17b is attached, and the spring member 19 is arranged on the outer periphery of the operation shaft 17. In this state, the operation shaft 17 on the 3 o'clock side is inserted into the inside from the outside of the second storage portion 21 on the 3 o'clock side of the protective cushioning member 16 and inserted into the through hole 10b on the 3 o'clock side of the case body 10.

Then, a plurality of waterproof rings 17b provided on the outer peripheral surface of the operation shaft 17 on the 3 o'clock side are inserted into the through holes 10b of the case body 10, and one end of the spring member 19 is bulleted into the outer surface of the case body 10. The other end of the spring member 19 is brought into contact with the inner surface of the operating head 18. In this state, when the operation head 18 on the 3 o'clock side is pushed into the second storage portion 21, the inner end portion of the operation shaft 17 protrudes into the case main body 10.

A retaining member 17a such as an E-ring is attached to the inner end of the protruding operation shaft 17 on the 3 o'clock side. As a result, like the operating members 15 on the 4 o'clock side and the 2 o'clock side, the operating head 18 of the operating member 15 on the 3 o'clock side is pushed out toward the outside of the case body 10 by the spring force of the spring member 19. Also, since the retaining member 17a abuts on the inner surface of the case body 10, the operating member 15 on the 3 o'clock side does not come out of the case body 10 and is attached to the case body 10.

Then, the operation member (not shown) of each push button switch 5 is attached to the 8 o'clock side and the 10 o'clock side of the case body 10, and the operation member of the top switch 6 (not shown) is attached to the 6 o'clock side of the case body 10. To install. In this state, the exterior member 11 is attached to the outer peripheral surface of the case body 10. At this time, the first cover 12 of the exterior member 11 is arranged so as to cover the upper surface of the case body 10, and the two second covers 13 of the exterior member 11 are arranged on the 12 o'clock side and the 6 o'clock side of the case body 10. Each band mounting portion 3 is placed so as to cover it.

In this case, when the second cover 13 on the 6 o'clock side is arranged on the band attachment portion 3 on the 6 o'clock side, the switch opening 13a provided on the second cover 13 is attached to the 6 o'clock side of the case body 10. The top surface switch 6 is arranged so as to correspond to the top surface switch 6, and the top surface switch 6 is exposed from the switch opening 13a of the second cover 13 so that the switch can be operated.

In this state, the first cover 12 and the two second covers 13 are attached to the band attachment portions 3 on the 12 o'clock side and the 6 o'clock side of the case body 10 by a plurality of first screw members 14. As a result, the wristwatch case 1 is assembled. Then, the watch module 9 is inserted into the case body 10 from below and arranged, and the back cover 8 is attached to the lower part of the case body 10 together with the waterproof packing 8a. As a result, the wristwatch is assembled.

Next, the operation of the switch device 4 of such a wristwatch will be described.
In this switch device 4, normally, each operation head 18 of the three operation members 15 from the 2 o'clock side to the 4 o'clock side is pushed out toward the outside of the case body 10 by the spring force of the spring member 19, and each operation is performed. The head 18 is housed in the first to third storage portions 20 to 22, respectively.

In this case, the retaining member 17a provided at the inner end of each operation shaft 17 of the three operation members 15 comes into contact with the inner surface of the case body 10, and each operation shaft 17 comes out of the case body 10. Never. Therefore, in this switch device 4, the three operation heads 18 from the 2 o'clock side to the 4 o'clock side receive an impact from the vertical direction of the case body 10 by the first to third storage portions 20 to 22 of the protective buffer member 16. It is protected so that it will not be received.

In this state, when each operating head 18 of the three operating members 15 is pressed against the spring force of the spring member 19, the inner end portion of each operating shaft 17 is pushed into the case body 10. Then, each contact portion (not shown) of the watch module 9 in the case body 10 is pressed. As a result, each contact portion operates as a switch and is turned on. Further, when the pressing operation of each operating head 18 is released, the three operating members 15 are pushed out by the spring force of the spring member 19 to return to the initial position, and each contact portion is turned off.

Further, when each of the three operation heads 18 from the 2 o'clock side to the 4 o'clock side is impacted from the side of the case body 10 on the 4 o'clock side and the 2 o'clock side, Since each operating head 18 is pressed against the bottoms 20a and 22a of the first and third storage portions 20 and 22 against the spring force of the spring member 19 of each operating member 15, the bottoms 20a and 22a The impact is buffered.

Therefore, even if the operating heads 18 on the 4 o'clock side and the 2 o'clock side receive an impact from the side of the case body 10, damage to the operating members 15 on the 4 o'clock side and the 2 o'clock side can be prevented. Since the impact of each operating head 18 is not transmitted to the case body 10, it is possible to prevent damage to the watch module 9 in the case body 10 and the parts mounted therein.

That is, since the protective cushioning member 16 is made of elastic urethane resin, the operating heads 18 on the 4 o'clock side and the 2 o'clock side are impacted and the first and third storage portions 20 and 22 are subjected to impact. When pressed against the bottoms 20a and 22a of the above, the impact received by the operating heads 18 is buffered by the elasticity of the bottoms 20a and 22a.

In this case, the protective cushioning member 16 is made of a urethane resin having a hardness of A rank to E rank, which has a high hardness of C rank to E rank, and has a high hardness of D rank, which has a cushioning property. By being formed, the impact when each operation head 18 comes into contact with the bottom portions 20a and 22a of the first and second storage portions 20 and 22 can be satisfactorily buffered.

Further, the bottom portions 20a and 22a of the first and second storage portions 20 and 22 are formed to have a wall thickness equal to or thicker than the wall thickness of the outer peripheral walls of the first and second storage portions 20 and 22. As a result, the impact when each operation head 18 comes into contact with the bottom portions 20a and 22a of the first and second storage portions 20 and 22 can be more reliably and satisfactorily buffered.

Further, the protective cushioning member 16 has a case body in which the bottom portions 20a and 22a of the first and third storage portions 20 and 22 are fastened by a second screw member 23 among the first to third storage portions 20 to 22. When attached to the outer surface of 10, the head of the second screw member 23 is placed in the large-diameter hole portion 24a of each screw mounting hole 24 of each bottom portion 20a, 22a at a portion corresponding to the recess 18a of each operation head 18. The screw portions of the second screw member 23 are inserted into the small diameter hole portions 24b of the screw mounting holes 24 of the bottom portions 20a and 22a, respectively, and screwed into the second screw holes 25 of the case body 10.

Therefore, the heads of the second screw members 23 do not protrude into the first and third storage portions 20, 22. As a result, when each operation head 18 is pressed against the bottom portions 20a and 22a of the first and third storage portions 20 and 22 by an external impact, the head of each second screw member 23 is pressed against each operation head. Since it is provided at a position corresponding to the recess 18a of the portion 18 and is arranged in the large-diameter hole portion 24a of each screw mounting hole 24, the inner end surface of each operation head 18 is the head of each second screw member 23. It will not be pressed against the part. Therefore, the impact received by each operation head 18 is satisfactorily buffered by the bottom portions 20a and 22a of the first and third storage portions 20 and 22.

On the other hand, in the protective cushioning member 16, since the bottom portion 20a of the first storage portion 20 and the bottom portion 22a of the third storage portion 22 are attached to the case body 10 by the two second screw members 23, the protective cushioning member 16 Even if an external force such as an impact is applied to both ends of the 2 o'clock side and 4 o'clock side from the outer peripheral direction of the case body 10, the external force causes each end of the first, third storage portions 20 and 22 of the protective cushioning member 16. The edges on both ends of the protective cushioning member 16 located on the portion side, that is, on the 5 o'clock side and the 1 o'clock side, do not turn over with respect to the case body 10.

That is, in the protective cushioning member 16, the 5 o'clock side end portion of the bottom portion 20 of the first storage portion 20 and the 1 o'clock side end portion of the bottom portion 22a of the third storage portion 22 are cased by the second screw member 23. It is fixed to the main body 10. Therefore, in the protective cushioning member 16, the end portion on the 5 o'clock side of the first storage portion 20 on the 4 o'clock side and the end portion on the 1 o'clock side in the third storage portion 22 on the 2 o'clock side are the case body 10. Even if an external force such as an impact is received from the outer peripheral direction, the 5 o'clock side end portion and the 1 o'clock side end portion of the protective cushioning member 16 do not turn over to the case body 10 due to the external force.

Further, in this protective cushioning member 16, two fitting mounting portions 26 located on both sides of the second storage portion 21 are fastened in the vertical direction by two third screw members 27, respectively, and are attached to the outer surface of the case body 10. By being pressed and attached, even if an external force such as an impact is applied from the vertical direction of the case body 10, each edge located above and below the protective cushioning member 16 does not turn over to the case body 10. ..

That is, in the protective cushioning member 16, the upper two mounting protrusions 30 are fixed to the two fixing protrusions 28 of the case body 10 by the heads 27a and the necks 27b of the two third screw members 27. Since it is pressed against the outer surface of the main body 10, even if an external force such as an impact is applied from the upper side of the protective cushioning member 16, the upper edge of the protective cushioning member 16 is turned up against the case main body 10 by the external force. There is no.

Further, in the protective cushioning member 16, the lower two mounting protrusions 31 are fastened to the two fixing protrusions 28 of the case body 10 by the non-screwed portions 27d of the two third screw members 27, and the case. Since it is pressed against the outer surface of the main body 10, even if an external force such as an impact is applied from the lower side of the protective cushioning member 16, the edge portion on the lower side of the protective cushioning member 16 is turned up with respect to the case main body 10 by the external force. There is no.

As described above, according to the switch device 4 of this wristwatch, the case main body 10 provided with a plurality of through holes 10b, the operation shaft 17 to be inserted into each through hole 10b of the case main body 10, and the operation shaft 17 A plurality of operating members 15 having an operating head 18 provided at an outer end portion, and a protective cushioning member 16 formed of an elastic synthetic resin and attached to the outer surface of the case body 10 are provided, and the protection thereof is provided. The cushioning member 16 has first and third storage portions 20 and 22 having bottom portions 20a and 22a facing each other of the inner end surfaces of the plurality of operation heads 18 and accommodating the operation heads 18, respectively. Therefore, the impact resistance can be improved by cushioning the impact from the outside.

That is, in this switch device 4, when each of the operation heads 18 of the plurality of operation members 15 receives an impact from the outside of the case body 10, each operation head 18 is placed on the first and third storage units 20 and 22. Since it can be brought into contact with the bottoms 20a and 22a, the elasticity of the bottoms 20a and 22a can buffer the impact from the outside, so that the impact received from the outside by each operation head 18 can be received from the outside. It can be prevented from being transmitted to the main body 10.

Therefore, in this switch device 4, it is possible to prevent damage to each operating member 15 due to an impact from the outside, and each operating head 18 is attached to the bottom portions 20a and 22a of the first and third storage portions 20 and 22. Since the impact at the time of contact is not transmitted to the case body 10, it is possible to prevent the watch module 9 in the case body 10 and the parts mounted therein from being damaged, thereby improving the impact resistance. can.

Further, in this switch device 4, since the protective cushioning member 16 is made of elastic urethane resin having high hardness, each operation head 18 housed in the first and third storage portions 20 and 22 is provided. When the bottom portions 20a and 22a of the first and third storage portions 20 and 22 are subjected to an impact, the first and third storage portions 20 and 22 are formed of a urethane resin having high elasticity and high hardness. Due to the elasticity of the bottom portions 20a and 22a of the above, the impact from the outside can be reliably and satisfactorily buffered.

In this case, the protective cushioning member 16 is made of a urethane resin having a hardness of A rank to E rank, which has a high hardness of C rank to E rank, and has a high hardness of D rank, which has a cushioning property. Due to the formation, when each operation head 18 that has received an external impact comes into contact with the bottom portions 20a, 22a of the first and second storage portions 20, 22, the impact is surely and good. Can be buffered in.

Further, in this switch device 4, is the wall thickness of the bottom portions 20a and 22a of the first and third storage portions 20 and 22 the same as the wall thickness of the outer peripheral walls of the first and third storage portions 20 and 22? Since it is formed thicker than the above, the impact when each operation head 18 comes into contact with the bottom portions 20a and 22a of the first and third storage portions 20 and 22 is applied to the first and third storage portions 20 and 22. The thick bottoms 20a and 22a of the above allow for more reliable and good buffering.

Further, in the switch device 4, of the first to third storage portions 20 to 22 of the protective cushioning member 16, the bottom portions 20a and 22a of the first and third storage portions 20 and 22 are fastened to the outer surface of the case body 10. By being attached by the second screw member 23 which is a member, the protective cushioning member 16 can be easily and surely attached to the case body 10.

That is, in this switch device 4, screw mounting holes 24 into which the second screw member 23 is inserted are provided in the bottom portions 20a and 22a of the first and third storage portions 20 and 22, respectively, and these screw mounting holes 24 are on the same axis. Since the structure is such that the corresponding second screw hole 25 is provided in the case main body 10, the second screw member 23 is inserted into the screw mounting holes 24 of the bottom portions 20a and 22a of the first and third storage portions 20 and 22. The protective cushioning member 16 can be easily and surely attached to the case body 10 simply by screwing the case body 10 into each of the second screw holes 25.

In this case, each of the screw mounting holes 24 provided in the bottom portions 20a and 22a of the first and third storage portions 20 and 22 has a large diameter hole portion 24a in which the head of the second screw member 23 is arranged. Since the small diameter hole portion 24b into which the threaded portion of the second screw member 23 is inserted is provided, each second screw member 23 is inserted into each screw mounting hole 24 and is inserted into each second screw hole 25 of the case body 10. When each is screwed, the head of each second screw member 23 can be arranged without protruding into the first and second storage portions 20, 22.

Therefore, in this switch device 4, when each operation head 18 comes into contact with the bottom portions 20a, 22a of the first and second storage portions 20, 22 due to an external impact, the inner end surface of each operation head 18 is reached. Does not come into contact with the head of each second screw member 23, so that the impact received by each operation head 18 is satisfactorily buffered by the bottoms 20a and 22a of the first and second storage portions 20 and 22. Can be done.

Further, in this switch device 4, three operating members 15 are provided from the 2 o'clock side to the 4 o'clock side along the outer circumference of the case main body 10, and the protective cushioning member 16 operates each of the three operating members 15. By providing the first to third storage portions 20 to 22 for storing the heads 18, the three operation members 15 are provided by the first to third storage portions 20 to 22 provided in one protective buffer member 16. It is possible to satisfactorily protect each operation head 18 of the above, and as a result, it is not necessary to individually manufacture and attach the protective cushioning member 16 for each of the first to third storage portions 20 to 22, so that the number of parts can be increased. It is possible to reduce the number and improve the assembly workability.

Further, in the switch device 4, among the first to third storage portions 20 to 22 of the protective buffer member 16, the first and third storage portions 20 and 22 located on both sides of the 4 o'clock side and the 2 o'clock side are By being attached to the case body 10 by the second screw member 23, even if the protective cushioning member 16 includes the first to third storage portions 20 to 22, the first to third storage portions 20 to 22 are the first. The two second screw members 23 do not need to be attached individually, and the two second screw members 23 allow the protective cushioning member 16 to be securely and satisfactorily attached to the outer surface of the case body 10.

In this case, in the protective cushioning member 16, the bottom portions 20a and 22a of the first and third storage portions 20 and 22 located on both the 4 o'clock side and the 2 o'clock side are formed on the outer surface of the case body 10 by the second screw member 23. Even if an external force such as an impact is applied to both the 4 o'clock side and the 2 o'clock side of the protective cushioning member 16 in the direction along the outer periphery of the case body 10, the protective cushioning member 16 due to the external force is applied to the case body 10. It is possible to prevent turning over on both sides of the 4 o'clock side and the 2 o'clock side.

In the above-described embodiment, the case where the protective cushioning member 16 is made of urethane resin has been described, but the present invention is not limited to this, as long as it is a synthetic resin having elasticity and a predetermined hardness, an elastomer or the like is used. , Any synthetic resin may be used.

Further, in the above-described embodiment, the case where the protective shock absorber 16 includes the first to third storage portions 20 to 22 has been described, but the present invention is not limited to this, and the present invention includes four or more storage portions. It may be a structure having two storage portions or one storage unit.

Further, in the above-described embodiment, the case where the second storage unit 21 does not have a bottom portion has been described, but the second storage unit 21 may have a bottom portion as in the first storage unit 20 and the third storage unit 22.

Further, in the above-described embodiment, when the fitting mounting portion 26 provided on the outer surface of the case main body 10 and the inner surface of the protective cushioning member 16 is fastened by the third screw member 27, the third from above the case main body 10. The case where the screw member 27 is inserted and attached has been described, but the present invention is not limited to this, and the third screw member 27 may be inserted and attached from below the case body 10.

In this case, the upper mounting protrusion 30 of the protective buffer member 16 is provided with a second screw insertion hole 31a into which the non-threaded portion 27d of the third screw member 27 is inserted, and the lower mounting protrusion 31 is provided with the third screw. The structure may be such that the first screw insertion hole 32 into which the head portion 27a and the neck portion 27b of the member 27 are inserted is provided.

Further, in the above-described embodiment, among the first to third storage portions 20 to 22 of the protective buffer member 16, both side portions of the second storage portion 21, that is, between the first and second storage portions 20, 21 and the second. The case where two fitting mounting portions 26 are provided between the third storage portions 21 and 22 has been described, but the present invention is not limited to this, and when two storage portions are provided, two fitting portions 26 are provided. One fitting mounting portion 26 may be provided between the storage portions.

Further, the present invention is not limited to this, and when four or more storage portions are provided, a structure may be provided in which fitting mounting portions 26 are provided between the respective storage portions, and the positions are located on both side portions. The structure may be provided only between the storage portion to be used and the storage portion adjacent to the storage portion.

Further, in the above-described embodiment, the case where it is applied to a wristwatch has been described, but the present invention does not necessarily have to be a wristwatch, and may be applied to various clocks such as a travel watch, an alarm clock, a table clock, and a wall clock. can. Further, the present invention does not necessarily have to be a watch, and can be applied to electronic devices such as mobile phones and mobile information terminals.

Although one embodiment of the present invention has been described above, the present invention is not limited to this, and includes the invention described in the claims and the equivalent range thereof.
Hereinafter, the inventions described in the claims of the present application will be added.

(Additional note)
The invention according to claim 1 comprises a case provided with a through hole, an operation shaft to be inserted into the through hole of the case, and an operation member having an operation head provided at an outer end portion of the operation shaft. The protective cushioning member comprises a protective cushioning member that is elastically attached to the outer surface of the case, and the protective cushioning member has a bottom portion facing the inner end surface of the operating head and around the operating head. It is a switch device characterized by having a storage unit for storing.

The invention according to claim 2 is the switch device according to claim 1, wherein the accommodating portion and the bottom portion are integrally formed.

The invention according to claim 3 is the switch device according to claim 1 or 2, wherein the protective cushioning member is made of a urethane resin having a high hardness.

The invention according to claim 4 is the switch device according to any one of claims 1 to 3, wherein the protective buffer member has the same thickness of the bottom portion as the wall thickness of the side wall portion of the storage portion. It is a switch device characterized by being formed thicker than that.

The invention according to claim 5 is the switch device according to any one of claims 1 to 4, wherein the protective cushioning member has a bottom portion attached to the outer surface of the case by a fastening member. It is a switch device characterized by.

The invention according to claim 6 is the switch device according to any one of claims 1 to 5, wherein a plurality of the operating members are provided along the outer periphery of the case, and the protective cushioning member is a protective cushioning member. The switch device is characterized in that a plurality of the storage portions for storing the operation heads of the plurality of operation members are provided.

According to a seventh aspect of the present invention, in the switch device according to the sixth aspect, the protective cushioning member has the storage portions located at both ends of the plurality of storage portions attached to the case by a fastening member. It is a switch device characterized by being present.

The invention according to claim 8 is a timepiece including the switch device according to any one of claims 1 to 7.

1 Watch case 4 Switch device 9 Watch module 10 Case body 10a Reinforcing member 10b Through hole 10c Guide protrusion 11 Exterior member 15 Operating member 16 Protective shock absorber 17 Operating shaft 18 Operating head 19 Spring member 20-22 1st to 3rd storage Part 20a, 22a Bottom part 20b, 22b Shaft insertion hole 20c-22c Notch part 23 2nd screw member 24 Thread mounting hole 24a Large diameter hole part 24b Small diameter hole part 25 2nd screw hole 26 Fitting mounting part 27 3rd screw member 27a Head 27b Neck 27c Thread 27d Non-thread 28 Fixed protrusion 28a Third screw hole 29 Fitting recess 30, 31 Mounting protrusion 31a Second screw insertion hole 32 First screw insertion hole 32a Large diameter hole 32b Small diameter Hole

Claims (8)

A case with a through hole and
An operating shaft to be inserted into the through hole of the case, and an operating member having an operating head provided at the outer end of the operating shaft.
A protective cushioning member that has elasticity and is attached to the outer surface of the case,
Equipped with
The protective cushioning member has a bottom portion on which the inner end surfaces of the operation head face face each other, and also includes a storage portion for accommodating the periphery of the operation head.
A switch device characterized by that. In the switch device according to claim 1,
The storage portion and the bottom portion are integrally formed.
A switch device characterized by that. In the switch device according to claim 1 or 2.
The protective cushioning member is made of a urethane resin having a high hardness.
A switch device characterized by that. In the switch device according to any one of claims 1 to 3.
The protective cushioning member is formed so that the wall thickness of the bottom portion is the same as or thicker than the wall thickness of the side wall portion of the storage portion.
A switch device characterized by that. In the switch device according to any one of claims 1 to 4.
The protective cushioning member has a bottom portion attached to the outer surface of the case by a fastening member.
A switch device characterized by that. In the switch device according to any one of claims 1 to 5.
A plurality of the operating members are provided along the outer circumference of the case.
The protective buffer member is provided with a plurality of storage portions for storing the operation heads of the plurality of operation members.
A switch device characterized by that. In the switch device according to claim 6,
Of the plurality of storage portions, the storage portions located at both ends of the protective cushioning member are attached to the case by fastening members.
A switch device characterized by that. A timepiece comprising the switch device according to any one of claims 1 to 7.

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