Case device, watch, and method for manufacturing case device

Abstract

A case device is provided with: a central case having a cylindrical peripheral wall part; a buffer part which is arranged on the central housing, is made of an elastic material, and has adhesive property; and a housing case that covers the outer peripheral sides of the center case and the buffer part.

Description

Technical Field

[0001] The invention relates to a shell device, a watch and a method for manufacturing the shell device. Background Art

[0002] Japanese Patent Publication No. 2019-152510 describes a housing device, which includes an annular housing for storing a module, a cover covering the surface side of the housing, a bottom cover covering the back side of the housing, and a shell material covering the outer periphery of the housing. In addition, it is described that in the case of an impact from the upper surface side of the housing device, in order to prevent the cover from deforming and damaging the internal components, the cover and the internal components are joined with an adhesive that acts as a shock absorbing material.

[0003] However, in such a housing device, it is difficult to absorb the impact when it is impacted from the side. In addition, depending on the position and size of the buffer body disposed between the components, there is a problem of being exposed to the outside and damaging the appearance.

[0004] The present invention is an invention for improving and solving such a situation and has good design. Summary of the invention

[0005] A shell device according to one embodiment of the present invention comprises: a central shell having a cylindrical peripheral wall portion; a buffer portion having an elastic tape arranged on the central shell and made of an elastic material and having adhesiveness; and an outer shell covering the outer peripheral side of the central shell and the buffer portion.

[0006] A shell device in another embodiment of the present invention comprises: a central shell having a cylindrical peripheral wall portion and a recess on the outer peripheral surface; a buffer portion having an elastic tape arranged in the recess of the central shell and made of an elastic material and having adhesiveness, and a plate arranged in the recess on the outer peripheral side of the elastic tape; and an outer shell covering the outer peripheral side of the central shell and the buffer portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a perspective view showing the structure of the watch according to the first embodiment.

[0008] Figure 2 It is a cross-sectional view showing the structure of the table.

[0009] Figure 3 It is an explanatory diagram showing the structure of the central case and the buffer portion of the watch.

[0010] Figure 4 It is a bottom view showing the structure of the watch.

[0011] Figure 5A It is a front view showing the structure of the first cover plate of the watch.

[0012] Figure 5B It is a side view showing the structure of the first cover plate of the watch.

[0013] Figure 5C It is a top view showing the structure of the first cover plate of the watch.

[0014] Fig. 6A It is a front view showing the structure of the second cover plate of the watch.

[0015] Figure 6B It is a side view showing the structure of the second cover plate of the watch.

[0016] Figure 6C It is a top view showing the structure of the second cover plate of the watch.

[0017] Fig. 7A It is an explanatory diagram showing a method for manufacturing the watch.

[0018] Figure 7B It is an explanatory diagram showing a method for manufacturing the watch.

[0019] Figure 8 It is a cross-sectional view showing the structure of a watch according to the second embodiment. DETAILED DESCRIPTION

[0020] (First Embodiment)

[0021] Below, refer to Figure 1 A wristwatch 1 (device) and a method for manufacturing the wristwatch 1 according to a first embodiment of the present invention will be described through FIG. 7 . Figure 1 It is a plan view showing the structure of the wristwatch 1 . Figure 2 It is a cross-sectional view showing the structure of the wristwatch 1. Figure 3 It is an explanatory diagram showing the structure of the center case and the buffer portion. Figure 4 It is a bottom view of the watch 1. Figure 5A It is the front view of the first cover plate. Figure 5B is a side view of the first cover plate. Figure 5C is a top view of the first cover plate. Fig. 6A It is the front view of the second cover. Figure 6B is a side view of the second cover plate. Figure 6C is a top view of the second cover plate. Fig. 7A , Figure 7B It is an explanatory diagram showing a step of assembling the bezel 13 to the center case 11 in the method of manufacturing the watch.

[0022] In addition, in each figure, appropriate structures are schematically shown by enlarging, reducing, or omitting. In the present embodiment, for example, the side facing the outer surface of the cover 30 of the watch 1 is referred to as the front side, and the side facing the outer surface of the bottom cover portion constituting the bottom of the watch case 10 is referred to as the back side. For example, the watch 1 is worn in a posture where the outer surface of the bottom cover portion is opposite to the arm of the wearer.

[0023] like Figure 1 As shown, the watch 1 has a case 10 (housing device) constituting an outer contour, a module 20 arranged in the case 10, a cover 30 covering the surface side of the module 20, and a strap 40 having a pair of strap parts connected to two opposite positions of the outer periphery of the case 10, respectively.

[0024] The watch case 10 is circular and includes a central case 11 disposed on the outer periphery of the module 20, a bezel 13 (outer case) disposed on the outer periphery of the central case 11, and a plurality of buffers 51 and 52 disposed between the central case 11 and the bezel 13. In addition, a plurality of switches 15 and a crown are provided at predetermined locations on the outer periphery of the watch case 10.

[0025] like Figure 1 and Figure 2 As shown, the watch case 10 is constituted by a central case 11 and a storage portion 11 a as a circular space for arranging the module 20 . The opening on the surface side of the central case 11 is covered by a cover 30 .

[0026] The central housing 11 integrally includes a circular or polygonal frame portion 11b covering the outer periphery of the module 20 disposed in the storage portion 11a of the central housing 11 and a bottom cover portion 11c disposed opposite to the back side of the module 20. For example, the central housing 11 is formed by, for example, injection molding, such as fiber-reinforced resin. A storage portion 11a for storing the watch module 20 is formed inside the central housing 11. The central housing 11 may also be composed of a plurality of housing components.

[0027] The center housing 11 has a band mounting portion 16 for mounting the band members 41 and 42 at two locations on the outer periphery that are opposite to each other, such as the 6 o'clock and 12 o'clock positions. For example, the band mounting portion 16 has a connection structure having a connection hole (hole) connected to the band members 41 and 42 by a connection member such as a screw, a pin, or a spring rod. In addition, the band mounting portion 16 may be integrally formed with the watch case 10, or may be separately formed from the watch case 10 and assembled to the watch case 10.

[0028] like Figure 3 As shown in FIG. 1 , a storage recess 111 in which the buffer portions 51 and 52 are arranged is formed on the outer peripheral side surface (outer peripheral surface) of the central housing 11. Figure 1As shown, a plurality of switches 15 and two belt mounting portions 16 are arranged in the circumferential direction of the outer peripheral side surface of the central housing 11 , and a plurality of first storage recesses 111 and second storage recesses 112 are formed at a plurality of locations avoiding these switches 15 and belt mounting portions 16 .

[0029] The storage recesses 111 and 112 are formed by indenting a predetermined area of ​​the outer peripheral side surface of the central housing 11 inward in the radial direction. For example, the storage recesses 111 and 112 have bottom portions 111a and 112a that form a plane of a rectangular shape when viewed from the radial outside of the watch 1, and peripheral wall portions 111b and 112b that are erected from the peripheral edges of the bottom portions 111a and 112a. For example, the width dimension of the bottom portion 111a along the circumferential direction of the watch 1 is greater than the width dimension of the bottom portion 112a. In addition, the height dimensions of the bottom portions 111a and 112a along the axial direction of the watch 1 are configured to be equal.

[0030] The storage recesses 111 and 112 are arranged at multiple locations in the circumferential direction of the watch 1. As an example, six locations are provided. That is, the watch 1 is provided with two switches 15 on both sides of the axis passing through 6 o'clock and 12 o'clock as the center, and the storage recesses 111 and 112 are arranged at multiple locations avoiding the four switches 15 and the band mounting portion 16.

[0031] As an example, first storage recesses 111 are provided at 3 o'clock and 9 o'clock of the watch, and second storage recesses 112 having a smaller bottom surface area than the first storage recesses 111 are formed at 1 o'clock, 5 o'clock, 7 o'clock, and 11 o'clock.

[0032] Buffering parts 51 and 52 are provided in the plurality of storage recesses 111 and 112. The buffering parts 51 and 52 are provided at a plurality of locations corresponding to the plurality of the above-mentioned recesses. For example, in the present embodiment, the first buffering part 51 is arranged in the first storage recess 111, and the second buffering part 52 is arranged in the second storage recess 112. That is, the first buffering part 51 with a large area is arranged at the positions of 3 o'clock and 9 o'clock of the watch, and the second buffering part 52 with a smaller area than the first buffering part 51 is arranged at the positions of 1 o'clock, 5 o'clock, 7 o'clock, and 11 o'clock.

[0033] The first buffer portion 51 includes an elastic adhesive tape 53 (elastic tape) adhered to the bottom surface portion 111 a of the housing recess 111 , and a first cover plate 55 (plate) adhered to the outside of the elastic adhesive tape 53 .

[0034] The second buffer portion 52 includes an elastic adhesive tape 54 (elastic tape) adhered to the bottom surface portion 112 a of the housing recess 112 , and a second cover plate 56 (plate) adhered to the outside of the elastic adhesive tape 54 .

[0035] The elastic adhesive tapes 53 and 54 are adhesive sheets. For example, the elastic adhesive tapes 53 and 54 are adhesive tapes having adhesive layers on both sides and made of elastically deformable resin materials. The elastic adhesive tapes 53 and 54 are formed of, for example, a rubber material or a porous sponge material having a plurality of small holes containing bubbles. For example, when viewed from the radial outer side of the watch 1, the areas of the elastic adhesive tapes 53 and 54 are respectively smaller than the areas of the first cover plate 55 and the second cover plate 56, and are respectively smaller than the areas of the storage recesses 111 and 112, and are configured in a rectangular shape. In addition, the thickness T1 of the elastic adhesive tapes 53 and 54, which is the radial dimension of the watch 1, is smaller than the height of the peripheral wall portions 111b and 112b of the storage recesses 111 and 112, that is, the depth dimension T0. For example, the first elastic adhesive tape 53 is configured so that the width dimension along the circumference of the watch 1 is larger than that of the second elastic adhesive tape 54.

[0036] The first cover plate 55 and the second cover plate 56 are made of resin. For example, the first cover plate 55 and the second cover plate 56 are made of a hard resin material that is harder than the elastic adhesive tapes 53 and 54. For example, the first cover plate 55 and the second cover plate 56 are made of the same material as the central shell 11, or contain the same material as the material contained in the central shell 11. As an example, the first cover plate 55 and the second cover plate 56 contain a carbon material like the central shell 11. For example, the first cover plate 55 and the second cover plate 56 are configured to have a width dimension and a height dimension that are smaller than the storage recesses 111 and 112. For example, the first cover plate 55 is configured to have a width dimension that is larger than the second cover plate 56.

[0037] For example, FIG. 5A to FIG. 5C , FIG. 6A to FIG. 6C As shown, the first cover plate 55 and the second cover plate 56 respectively have inner surface portions 55a, 56a bonded opposite to the elastic adhesive tapes 53, 54, outer surface portions 55b, 56b facing the outside opposite to the inner surface portions 55a, 56a, edges 55c, 56c on the surface side of the watch 1, edges 55d, 56d on the back side, and a pair of side edges 55e, 55f, 56e, 56e, 56f on both sides of the circumference of the watch 1.

[0038] For example, when viewed from the outer peripheral side of the watch 1, the first cover plate 55 and the second cover plate 56 are configured to be larger than the elastic adhesive tapes 53 and 54 and smaller than the storage recesses 111 and 112. For example, the first cover plate 55 and the second cover plate 56 have chamfered portions 55h and 56h chamfered into a flat or curved shape at the edges of the outer surface portions of the outer peripheral side of the watch 1. For example, the first cover plate 55 has a chamfered portion 55h inclined in a tapered shape at one end side in the width direction, and the second cover plate 56 has a chamfered portion 56h inclined in a tapered shape at both ends in the width direction.

[0039] The inner surface parts 55a and 56a are respectively configured in a flat surface shape.

[0040] When the outer surface portions 55b and 56b are observed from the visual side, i.e., the surface side, of the watch 1, Figure 5C As shown in the top view of the embodiment, the curved surface is formed with the center in the width direction as the top. In addition, the outer surface portions 55b and 56b have tapered sliding surfaces 55i and 56i which are inclined radially inward as the upper end portions on the surface side of the watch 1. For example, the base end portions of the sliding surfaces 55i and 56i are located on the inner side of the storage recesses 111 and 112 in the radial direction of the watch 1. That is, the outer surface portions 55b and 56b are inclined radially inward at the front end side of the installation direction when installed on the bezel 13.

[0041] In the first cover plate 55 and the second cover plate 56, for example, the thickness T2 which is the radial dimension of the watch 1 is greater than the thickness T1 of the adhesive tapes 53 and 54. In addition, the sum of the thickness T1 of the elastic adhesive tapes 53 and 54 and the thickness T2 of the first cover plate 55 and the second cover plate 56 is greater than the depth dimension T0 which is the radial dimension of the watch 1 of the recesses 111 and 112.

[0042] The bezel 13 is mounted on the outside of the center housing 11. For example, the bezel 13 integrally includes a circular or polygonal peripheral wall portion 13a disposed on the outer peripheral portion of the frame portion 11b of the center housing 11 and a frame-shaped bezel frame portion 13b disposed opposite to the surface side of the frame portion 11b of the center housing 11. The bezel 13 is fixed to the center housing 11 by a connection portion such as a screw.

[0043] For example, the bezel 13 is made of a carbon reinforced resin material, i.e., forged carbon, which is formed by mixing short carbon fibers cut into short pieces into a resin material and hot pressing. In addition, a cushioning member such as a seal may be sandwiched between the frame portion 13b of the bezel 13 and the frame portion 11b of the central housing 11.

[0044] The module 20 includes a display unit that displays information such as time and date, a movement that operates the display unit, a circuit substrate equipped with electronic components such as an IC and an antenna, and various components required for the watch function such as a battery. For example, the display unit may be a digital display unit such as a liquid crystal display panel with a digital display function, or an analog display unit such as a dial and a pointer. In addition, a plurality of display units may be provided.

[0045] The cover 30 is a transparent member formed of inorganic glass such as SiO2 glass. For example, the cover 30 is a transparent disk-shaped mirror, which is arranged on the surface side of the module 20 and covers the module 20. For example, the cover 30 is supported on the inner periphery of the opening on the surface side of the central housing 11. A seal is sandwiched between the outer periphery of the cover 30 and the inner periphery of the central housing 11.

[0046] The watch band 40 includes a first band member 41, a second band member 42, and a connecting mechanism portion connected to the first band member 41 and the second band member 42. For example, one end side of each band member 41, 42 is connected to the watch case 10, and the other end side is connected to each other through the connecting mechanism portion so as to be detachable.

[0047] Next, a description will be given of a step of assembling the bezel 13 to the center case 11 in the method of manufacturing the wristwatch 1 according to the present embodiment.

[0048] The manufacturing method of the watch 1 in this embodiment includes: a first step, in which a plurality of plates 55, 56 corresponding to the plurality of recesses 111, 112 are respectively adhered to the plurality of recesses 111, 112 of the central shell 11 via elastic adhesive tapes 53, 54; and a second step, in which the bezel 13 serving as the outer shell case is mounted on the outer periphery of the central shell 11 obtained in the first step.

[0049] First, if Fig. 7A As shown, with the module 20 etc. housed in the central housing 11, the first cover 55 and the second cover 56 are adhered to the flat bottom surfaces 111a, 112a of the plurality of housing recesses 111, 112 of the central housing 11 via elastic adhesive tapes 53, 54 (first step).

[0050] Here, the sum of the thickness T1 of the elastic adhesive tapes 53 and 54 as double-sided adhesive tapes and the thickness T2 of the first cover plate 55 and the second cover plate 56 is configured to be larger than the depth dimension T0 (in the radial direction of the watch 1) of the recesses 111 and 112, so that in a state before the bezel 13 is attached, the outer surface portions 55b and 56b of the first cover plate 55 and the second cover plate 56 protrude further outward than the outer surface around the storage recesses 111 and 112 of the center case 11. The outermost portions of the outer surface portions 55b and 56b of the first cover plate 55 and the second cover plate 56 are arranged further outward in the radial direction of the watch 1 than the innermost portion of the inner side edge of the peripheral wall portion 13a of the bezel 13.

[0051] Then, if Figure 7B As shown, the bezel 13 is pressed into and mounted on the outer periphery of the center case 11 from the surface side (second step). At this time, the bezel 13 forms tapered inclined surfaces, i.e., sliding surfaces 55i, 56i, on the outer surface portions 55b, 56b of the first cover plate 55 and the second cover plate 56 at the ends of the insertion direction of the bezel 13, i.e., the ends on the surface side of the watch 1, so that the bezel 13 can be easily inserted. When the bezel 13 is mounted on the center case 11, the bezel 13 pushes the first cover plate 55 and the second cover plate 56 to compress the elastic adhesive tapes 53, 54, and the first cover plate 55 and the second cover plate 56 are pushed to the inner surface of the bezel 13 by the restoring force of the elastic adhesive tapes 53, 54.

[0052] According to the watch 1 and the manufacturing method of the watch 1 constructed as described above, high design properties can be ensured by sandwiching elastic adhesive tapes 53 and 54 with a buffering effect. That is, there are few restrictions on the hardness and shape of the first cover plate 55 and the second cover plate 56, and the freedom of design can be ensured. For example, if the buffer component is hard, the buffering effect is weak, but if it is soft, it is difficult to position the components when assembling them. However, by making the elastic adhesive tapes 53 and 54 have buffering properties, the freedom of design of the size, shape or material of the first cover plate 55 and the second cover plate 56 can be ensured. Through this structure of the present application, it is possible to improve and solve the problem that when a buffer body is arranged between components in order to improve impact resistance, the buffer effect is weak when the buffer body is too hard, and if there is no certain degree of hardness, it is difficult to position the components when assembling them. In addition, since the buffer body is exposed to the outside according to the position and size, it is also possible to improve and solve the problem that may become the main cause of damage to the appearance.

[0053] Therefore, for example, by making the first cover plate 55 and the second cover plate 56 from the same material as the central shell 11 or a common material, even if the first cover plate 55 and the second cover plate 56 are visible from the gap between the central shell 11 and the bezel 13, for example, on the back side of the watch 1, they can be made to have commonality in appearance with peripheral parts such as the central shell 11, and the appearance can be improved.

[0054] In addition, the elastic adhesive tapes 53 and 54 are attached to the bottom surfaces 111a and 112a of the storage recesses 111 and 112 which are indented from the outer surface of the central housing 11, and the thickness T1 of the elastic adhesive tapes 53 and 54 is smaller than the depth T0 of the storage recesses 111 and 112, so that the elastic adhesive tapes 53 and 54 can be hidden, and the appearance can be improved. In addition, by storing the elastic adhesive tapes 53 and 54, most of the first cover plate 55 and the second cover plate 56 in the storage recesses 111 and 112, miniaturization can be achieved, and by changing the thickness or material of the first cover plate 55, the strength of the buffer effect can be adjusted, and the shaking of the components can be suppressed. In addition, since the first cover plate 55 and the second cover plate 56 have the sliding surfaces 55i and 56i inclined inward on the surface side, when the bezel 13 is installed by relatively moving from the surface side to the back side, the insertion into the bezel 13 is guided, and high installation workability can be achieved.

[0055] In addition, the buffer parts 51 and 52 are divided into a plurality of parts on the outer periphery of the watch 1 and are partially provided respectively, so that they do not need to be provided on the entire circumference, and the individual parts 53, 54, 55, and 56 are small and easy to paste. For example, compared with using an annular buffer material throughout the entire circumference, it is easy to position, and it is not easy to deflect or bend when pasting, so the pasting operation is simple. In addition, since the bezel 13 is covered in a state covered by the hard first cover plate 55 and the second cover plate 56, the installation performance of the bezel 13 when moving in the axial direction is good. In particular, by configuring the large-sized buffer parts 51 at the 3 o'clock and 9 o'clock positions of the watch, the impact absorption effect can be effectively improved.

[0056] In addition, the above-mentioned embodiment is an example and does not limit the scope of the invention.

[0057] For example, the position or shape of the first cover plate 55 and the second cover plate 56 or the elastic adhesive tapes 53 and 54 is not limited to the above-mentioned embodiment, and can be appropriately changed. In addition, the material of the first cover plate 55 and the second cover plate 56 is not limited to hard resin, and the first cover plate 55 and the second cover plate 56 can also be made of elastic material. For example, by using elastic material as the material of the first cover plate 55 and the second cover plate 56, the impact absorption can be further improved. In addition, the configuration of the buffering parts 51 and 52 is not limited to the above. For example, it can also be set in other parts such as the outer surface of the belt mounting part 16, and can be set according to the part where the impact is required to be buffered.

[0058] (Second Embodiment)

[0059] Below, refer to Figure 8 A wristwatch 1A (device) according to a second embodiment of the present invention will be described. Figure 8 It is a cross-sectional view showing the structure of the wristwatch 1A.

[0060] like Figure 8As shown, the structure may be a structure in which no recess is formed on the central housing 11. In addition, the buffer portion may also be a structure without a plate. In this case, since one or more elastic tapes 53A (elastic tapes) are attached to the surface of the central housing 11, it becomes a structure protruding from the surface of the central housing 11. That is, the watch case 10 of the wristwatch 1 of this embodiment includes: the central housing 11 having a cylindrical peripheral wall portion, the elastic tape 53A (elastic tape) disposed on the central housing 11 and composed of an elastic material and having adhesiveness on one surface, that is, the buffer portion 51A, and the bezel 13 covering the outer peripheral side of the central housing 11 and the buffer portion 51A. However, since the bezel 13 covers the outer peripheral side of the central housing 11 and the buffer portion 51A, the elastic tape 53A is compressed to some extent. For example, the buffer portion 51A having the elastic tape 53A is respectively provided at multiple locations on the outer periphery of the central housing 11. The multiple elastic tapes 53A may have different shapes depending on the different attachment locations.

[0061] For example, when the bezel 13 is pressed and mounted from the surface side of the center case 11 to which the elastic tape 53A is attached, the elastic tape 53A can use a so-called single-sided tape in which an adhesive layer is formed on one surface opposite to the center case 11 and no adhesive layer is formed on the other surface opposite to the outer case 13 in the assembled state. The other structures of the watch 1A are the same as those of the watch 1.

[0062] Although some embodiments of the present invention have been described, the present invention is included in the invention described in the claims and the scope of equivalents thereof.

Claims

1. A housing device, characterized in that: have: A central housing having a cylindrical peripheral wall portion; a buffer portion, which is disposed on the central housing and is made of an elastic material and has adhesiveness; and The outer shell covers the outer peripheral sides of the central shell and the buffer portion.

2. A housing device, characterized in that: have: A central housing having a cylindrical peripheral wall portion and a recessed portion formed on an outer peripheral surface of the peripheral wall portion; a buffer portion including an elastic tape disposed in the recessed portion of the central housing and made of an elastic material and having adhesiveness, and a plate disposed on an outer peripheral side of the elastic tape in the recessed portion; and The outer shell covers the outer peripheral sides of the central shell and the buffer portion.

3. The housing device according to claim 2, characterized in that: A plurality of the recesses are formed, The buffer portion is provided at a plurality of locations corresponding to the plurality of recessed portions.

4. The housing device according to claim 2, characterized in that: The elastic tape is a double-sided adhesive tape made of porous material.

5. The housing device according to claim 2, characterized in that: The plate is made of a resin material that is harder than the elastic tape.

6. The housing device according to claim 2, characterized in that: The outer surface portion of the plate has a tapered sliding surface whose one end side in the mounting direction is inclined inward when mounted on the housing case.

7. The housing device according to claim 2, characterized in that: The depth dimension of the recess is smaller than the sum of the thickness of the elastic tape and the thickness of the plate, In a mounted state where the outer shell is mounted on the central shell, the elastic tape of the buffer portion is compressed by the outer shell.

8. The housing device according to claim 2, characterized in that: The plate has a chamfered portion chamfered into a flat surface or a curved surface at an edge portion of an outer surface portion on the outer peripheral side of the housing device.

9. A table, characterized in that have: The housing device according to any one of claims 1 to 8; and The watch module is arranged in a storage portion formed inside the peripheral wall portion of the central housing.

10. A method for manufacturing a housing device, characterized in that: include: A first step of attaching a plurality of plates corresponding to the plurality of recesses of a central housing having a plurality of recesses on an outer peripheral surface of a cylindrical peripheral wall portion, respectively, via an elastic tape made of an elastic material and having adhesiveness, to the plurality of recesses; as well as a second step of attaching an outer shell to the outer periphery of the central shell obtained in the first step, The plurality of elastic tapes and the plates are correspondingly disposed in the plurality of recesses.

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