Exterior parts, exterior part unit, and timepiece

Abstract

To suitably provide a timepiece case with exterior parts made of a brittle material.SOLUTION: Exterior parts 30 are made of a brittle material, and in a state of being arranged around a timepiece case 2 which is a rigid body, a planar region of an inner surface is in contact with a planar region in an outer surface of the timepiece case 2. Among the exterior parts 30, a first contact surface 41a of a front bezel 4 is in contact with a first case side flat surface 26a of the timepiece case 2 in a state of being arranged around the timepiece case 2. A second contact surface 51a of a side bezel 5 is in contact with a second case side flat surface 26b of the timepiece case 2 in a state of being arranged around the timepiece case 2.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an exterior part, an exterior part unit, and a timepiece. [Background technology]

[0002] Patent Document 1 discloses a wristwatch equipped with a protective member for the crown. The protective member is fixed to the side of the exterior case with a bolt. If an exterior part such as this protective member is made of a brittle material such as sapphire, it would be difficult to position it in a way that would prevent it from breaking. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-169968 Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention has been made in view of the above circumstances, and has as its object to suitably exteriorize a watch case with exterior components made of brittle materials. [Means for solving the problem]

[0005] In order to achieve the above object, the exterior part of the present invention comprises: Made of brittle material, When arranged around a rigid watch case, the flat area on the inner surface abuts against the flat area on the outer surface of the watch case. [Effects of the Invention]

[0006] According to the present invention, the watch case can be suitably exteriorized with exterior components made of brittle materials. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a front view of the main parts of the timepiece according to the embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the main parts of the timepiece according to the embodiment. [Figure 3] FIG. 2 is a partial cross-sectional view of the timepiece taken along line III in FIG. 1. [Figure 4] FIG. 2 is a partial cross-sectional view of the timepiece taken along line IV in FIG. 1. [Figure 5] FIG. 2 is a diagram showing the contact surfaces of the side bezel and the watch case according to the embodiment. [Figure 6] FIG. 2 is a partial cross-sectional view of the timepiece taken along line VI in FIG. 1. [Figure 7] FIG. 2 is an exploded perspective view of the rectangular bezel according to the embodiment. [Figure 8] FIG. 8 is a partial cross-sectional view of the timepiece taken along line VIII in FIG. [Figure 9] 10A and 10B are diagrams for explaining modified examples of division modes of the exterior part according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a timepiece 100 according to this embodiment is a wristwatch worn on a user's wrist. Specifically, the timepiece 100 includes a watch case 2 and a bezel unit 3. In the following description, the X, Y, and Z directions of the timepiece 100 refer to the directions shown in the respective drawings. That is, the X direction refers to the 3 o'clock-9 o'clock direction in an analog timepiece, the Y direction refers to the 12 o'clock-6 o'clock direction, and the Z direction refers to the front-to-back direction of the timepiece 100 (watch case 2). Within the Z direction, the front side, which is the visible side, is referred to as the "upper side (upper)" and the back side as the "lower side (lower)." Furthermore, the direction perpendicular to the central axis Ax of the watch case 2 along the Z direction is referred to as the "radial direction," the direction of rotation around the central axis Ax is referred to as the "circumferential direction," and within a plane perpendicular to the central axis Ax, the side closer to the central axis Ax is referred to as the "inner side (inner diameter side)," and the side further away from the central axis Ax is referred to as the "outer side (outer diameter side)."

[0009] The watch case 2 is formed into a roughly rectangular cylindrical shape when viewed from the front (top), with the front (upper) opening closed by a transparent crystal member 23 that transmits visible light, and the rear (lower) opening closed by a back cover 24 (see FIG. 3, etc.). The watch case 2 is made of a material such as a metal such as titanium or stainless steel, or a hard resin such as carbon. However, the watch case 2 may be rigid, and its material is not particularly limited as long as it is not a brittle material. In this embodiment, an object being "rigid" preferably has a greater rigidity than the brittle material it is in contact with, but it need not be made of an elastic material. The watch case 2 houses a watch module 10 (see FIG. 3, etc.). The watch module 10 includes, for example, a time display unit that displays the time, a battery that serves as a power source, and a circuit board on which a control circuit is mounted. The shape of the watch case 2 when viewed from the top is not limited to a rectangular cylindrical shape and may be, for example, a polygonal shape other than a rectangle, or a circle.

[0010] 2 and 3, a stepped portion 25 is formed around the entire circumference of the outer surface of the watch case 2, gradually increasing in size from top to bottom. The stepped portion 25 has a step surface 25a that faces upward and is generally perpendicular to the Z direction. The portion of the watch case 2 above the stepped portion 25 forms a cylindrical portion 26 that has a rounded rectangular cylindrical shape when viewed from above. The windshield member 23 is fitted onto the inner diameter side of the cylindrical portion 26 via a first packing 231.

[0011] The bezel unit 3 is an example of an exterior component unit according to the present invention and includes two front bezels 4, two side bezels 5, four corner bezels 6, a top bezel 7, and a spacer 81. The exterior components 30 of the bezel unit 3 (the front bezels 4, the side bezels 5, the corner bezel main body 61, and the top bezel 7) excluding the retaining member 62 of the corner bezel 6 (described later) and the spacer 81 (described later) are made of a translucent material that transmits visible light, such as sapphire glass. However, the material of the exterior component 30 is not limited to translucent materials and broadly includes brittle materials such as inorganic glass, ceramic, and shell. Furthermore, although not particularly limited, all surfaces of the exterior component 30 are mirror-finished to a predetermined smoothness.

[0012] Of the bezel unit 3, the two front bezels 4, two side bezels 5, and four corner bezels 6, excluding the top bezel 7, are arranged in a ring shape as a whole in a plane perpendicular to the Z direction, covering the outer surface of the watch case 2. Of these, the front bezels 4 and side bezels 5 are an example of a second part according to the present invention, and are arranged on the sides (outside) of the watch case 2. More specifically, the front bezels 4 and side bezels 5 correspond to the four sides of the approximately rectangular watch case 2, and are arranged along each of these sides. The corner bezel 6 is an example of a third part according to the present invention, and is arranged between two adjacent front bezels 4 and side bezels 5 (i.e., at the four corners of the watch case 2).

[0013] The two front bezels 4 are disposed on both sides of the watch case 2 in the Y direction. Each front bezel 4 is formed in a shape that extends in the X direction corresponding to the side of the watch case 2 in the Y direction. Each front bezel 4 is also disposed so as to cover the upper side of a band attachment portion 29 of the watch case 2 to which a band (not shown) is attached. Corresponding to the shape of the band attachment portion 29, each front bezel 4 is formed in the shape of a generally inclined plate that gradually becomes lower as it moves away from the central axis Ax in the Y direction.

[0014] The inner diameter end 41 of each front bezel 4 abuts against and is fixed to the watch case 2. Specifically, the central portion of the inner surface of the end 41, excluding both sides in the X direction, forms a planar first abutment surface 41a. The portion of the watch case 2 corresponding to the first abutment surface 41a is the planar first case side flat surface 26a on both sides in the Y direction of the outer surface of the tubular portion 26, which is approximately perpendicular to the radial direction. When each front bezel 4 is arranged around the watch case 2, the first abutment surface 41a abuts against the first case side flat surface 26a of the watch case 2. The underside of the end 41 of each front bezel 4 abuts against the step surface 25a of the watch case 2 via double-sided tape 83a. In other words, the underside of the end 41 and the step surface 25a of the watch case 2 are adhered by the double-sided tape 83a.

[0015] 2, 4, and 5, the two side bezels 5 are arranged on both sides of the watch case 2 in the X direction. Each side bezel 5 is formed in a shape that extends in the Y direction, corresponding to a side of the watch case 2 in the X direction.

[0016] The inner diameter end 51 of each side bezel 5 abuts and is fixed to the watch case 2. Specifically, the central portion of the inner surface of the end 51, excluding both sides in the Y direction, forms a flat second abutment surface 51a. The portion of the watch case 2 corresponding to the second abutment surface 51a is the flat second case side flat surface 26b on both sides in the X direction of the outer surface of the tubular portion 26, which is approximately perpendicular to the radial direction. When each side bezel 5 is arranged around the watch case 2, the second abutment surface 51a abuts the second case side flat surface 26b of the watch case 2. The underside of the end 51 of each side bezel 5 abuts the step surface 25a of the watch case 2 via double-sided tape 83d. In other words, the underside of the end 51 of each side bezel 5 and the step surface 25a of the watch case 2 are adhered by the double-sided tape 83d. The height of the end 51 of the side bezel 5 in the Z direction is approximately the same as that of the end 41 of the front bezel 4. In FIG. 5, the second contact surface 51a and the second case side flat surface 26b are shown with a dotted pattern for ease of understanding, but the surface state of these flat areas is not particularly limited.

[0017] In each side bezel 5, the inner surface of the end portion 51 has a curved first curved surface 51b on both sides in the Y direction other than the second abutment surface 51a. The portions of the watch case 2 corresponding to the first curved surface 51b are the four corners of the outer surface of the tubular portion 26, which are curved first case-side curved surfaces 26c. When each side bezel 5 is arranged around the watch case 2, it is preferable that the first curved surface 51b is separated from (not in contact with) the first case-side curved surface 26c of the watch case 2. This allows the second abutment surface 51a of each side bezel 5 to more reliably abut against the second case-side flat surface 26b of the watch case 2. Note that it is sufficient that at least a portion of the first curved surface 51b of the side bezel 5 and the first case-side curved surface 26c of the watch case 2 are separated from each other, and they may abut partially due to processing errors, for example.

[0018] As shown in FIGS. 2 and 6 , a U-shaped undercut groove 52 opening downward is formed in the portion of each side bezel 5 corresponding to the multiple operation buttons 9. Each operation button 9 is fixed to a portion of the watch case 2 below the cylindrical portion 26, intersecting both the X and Y directions and extending approximately along the radial direction. Each operation button 9 includes a decorative piece 91, a button pipe 92, and a push button 93. The decorative piece 91 is formed in a substantially cylindrical shape and is placed in the undercut groove 52 without direct contact with the side bezel 5, with a buffer 94 (e.g., made of nitrile rubber) sandwiched between it and the side bezel 5. The side bezel 5 is pressed radially inward by the decorative piece 91 via the buffer 94. The button pipe 92 is inserted into the decorative piece 91 and screwed to the watch case 2, with its flange projecting outward to hold the decorative piece 91 in place. An O-ring 95 seals the gap between the button pipe 92 and the watch case 2. The push button 93 is inserted into the button pipe 92 and is supported so that it can be pressed radially. If the timepiece 100 has an analog display system and is equipped with a crown, the side bezel 5 can be structured similarly to this embodiment to avoid contact with the crown.

[0019] As shown in Figures 1, 2, 7, and 8, the four bezels 6 are arranged in the corners of the watch 100 between the front bezel 4 and the side bezels 5 when viewed from above. Each bezel 6 has a bezel main body 61 and a retaining member 62 that holds it. The bezel main body 61 is formed in a generally rectangular column shape that is elongated in the Z direction. The surface of the bezel main body 61 that corresponds to the inner diameter side of the watch case 2 is formed in a stepped shape with a downward-facing step surface 61a. The retaining member 62 has a groove that opens radially outward and runs along the Z direction, and the bezel main body 61 is housed in this groove. The retaining member 62 has an upward-facing step surface 62a within the groove that corresponds to the step surface 61a of the bezel main body 61. The rectangular bezel main body 61 is bonded to the holding member 62 with an adhesive, with its step surface 61a abutting against the step surface 62a of the holding member 62 in the X direction and its inner diameter end surface 61b abutting against the groove bottom surface 62b of the holding member 62 in the radial direction. However, the method of joining the rectangular bezel main body 61 and the holding member 62 is not limited to adhesive, and double-sided tape, for example, may be used. A convex portion 621 extending in the Z direction is formed on the inner diameter surface of the holding member 62. A groove portion 28 (see FIG. 2) extending in the Z direction corresponding to the convex portion 621 is formed at each of the four corners of the watch case 2. Each rectangular bezel 6 is positioned at a corner of the watch case 2 by fitting the convex portion 621 of the holding member 62 into the groove portion 28 of the watch case 2. The top surface of the convex portion 621 of the holding member 62 and the bottom surface of the groove portion 28 of the watch case 2 are bonded with double-sided tape 83e. At this time, a downward-facing step surface 621a formed on the lower end of the protrusion 621 of the retaining member 62 abuts against an upward-facing step surface 28a in the groove 28 of the watch case 2. The retaining member 62 is an example of a spacer according to the present invention, and is interposed circumferentially between the front bezel 4 and the side bezel 5, or between the front bezel 4 or the side bezel 5 and the rectangular bezel main body 61. The material (raw material) of the retaining member 62 is, for example, a metal such as titanium or stainless steel, or a hard resin such as carbon. However, the material of the retaining member 62 is not particularly limited as long as it is rigid and is not a brittle material.

[0020] As shown in Figures 2 and 3, the top bezel 7 is an example of a first component according to the present invention, and is arranged above the watch case 2. The top bezel 7 is a square annular shape in top view that corresponds to the shape of the watch case 2, and is formed in a shape with a flange 71 that protrudes inward around the entire circumference. The top bezel 7 is fixed to the watch case 2 by being press-fitted onto the outer diameter side of the cylindrical portion 26 of the watch case 2. A second gasket 82 is arranged between the top bezel 7 and the cylindrical portion 26 so that they do not come into direct contact. The second gasket 82 is made of a different material than the first gasket 231, and is softer (has a lower hardness) than the first gasket 231. The flange 71 of the top bezel 7 is arranged above the cylindrical portion 26 and first gasket 231 so that they are not visible from the front side.

[0021] The top bezel 7 secures the annularly arranged front bezel 4, side bezels 5, and rectangular bezel 6 by sandwiching them between the watch case 2 and the top bezel 7 in the Z direction. Specifically, an end 41 of each front bezel 4 is secured between the step surface 25a of the watch case 2 and the lower end surface of the top bezel 7, and an end 51 of each side bezel 5 is secured between the step surface 25a of the watch case 2 and the lower end surface of the top bezel 7. Each rectangular bezel 6 has a retaining member 62 secured between the step surface 28a of the watch case 2 and the lower end surface of the top bezel 7, and a rectangular bezel main body 61 secured between the step surface 62a of the retaining member 62 and the lower end surface of the top bezel 7.

[0022] A metal (e.g., titanium) spacer 81 is interposed between the top bezel 7 and the front bezel 4, side bezel 5, and rectangular bezel 6 (bezel main body 61) to prevent direct contact with them. The spacer 81 is formed in a square ring shape when viewed from above, corresponding to the top bezel 7, and is arranged below the top bezel 7 around the entire circumference of the watch case 2. Double-sided tape 83b is attached to the underside of the spacer 81, and this double-sided tape 83b bonds the spacer 81 to the front bezel 4, side bezel 5, and rectangular bezel 6 (bezel main body 61 and holding member 62). Double-sided tape 83c is attached to the top surface of the spacer 81, and this double-sided tape 83c bonds the spacer 81 to the top bezel 7. The material of the spacer 81 is, for example, a metal such as titanium or stainless steel, or a hard resin such as carbon. However, the material of the spacer 81 is not particularly limited as long as it is rigid and is not a brittle material.

[0023] Next, we will explain the procedure for assembling the bezel unit 3 to the watch case 2. It is assumed that the watch module 10 is already housed in the watch case 2, and that the crystal member 23 and back cover 24 are attached, and that the operation buttons 9 are also attached. It is also assumed that each of the four corner bezels 6 has already been assembled.

[0024] First, as shown in Figures 2 and 8, the four bezels 6 are attached to the four corners of the watch case 2. Specifically, the bezels 6 are positioned at each corner of the watch case 2 by fitting the convex portions 621 on the inner diameter side of the retaining members 62 of the bezels 6 into the grooves 28 at the corners of the watch case 2. Each bezel 6 is temporarily fixed by being adhered to the bottom surface of the grooves 28 of the watch case 2 with double-sided tape 83e attached to the top surface of the convex portions 621. At this time, the downward-facing step surface 621a formed on the lower end of the convex portions 621 of the retaining members 62 is brought into contact with the upward-facing step surface 28a in the grooves 28 of the watch case 2.

[0025] Next, as shown in Figures 2, 3, and 4, the two front bezels 4 and two side bezels 5 are sequentially attached to the watch case 2. Each front bezel 4 is temporarily fixed by adhering the underside of the end 41 to the step surface 25a of the watch case 2 with double-sided tape 83a, with the first abutment surface 41a of the end 41 in radial contact with the first case-side flat surface 26a of the watch case 2. Each side bezel 5 is temporarily fixed by adhering the underside of the end 51 to the step surface 25a of the watch case 2 with double-sided tape 83d, with the second abutment surface 51a of the end 51 in radial contact with the second case-side flat surface 26b of the watch case 2. At this time, the heights of the upper end surfaces of the front bezel 4, side bezel 5, and corner bezel 6 are approximately flush in a plane approximately perpendicular to the Z direction.

[0026] Next, the spacer 81 is placed on the watch case 2. With double-sided tapes 83c and 83b attached to the top and bottom surfaces, the spacer 81 is placed on the watch case 2 so that the cylindrical portion 26 is inserted through it. The spacer 81 is temporarily fixed by being adhered to the top surfaces of the front bezel 4, side bezel 5, and corner bezel 6 with the double-sided tape 83b on its bottom surface.

[0027] Next, the top bezel 7 is attached to the watch case 2. With the second packing 82 already placed on the outer diameter side of the cylindrical portion 26 of the watch case 2, the top bezel 7 is press-fitted from above onto the outer diameter side of the cylindrical portion 26 via the second packing 82. The top bezel 7 is press-fitted until it is in sufficient contact with the front bezel 4, side bezel 5, and square bezel 6 via the spacers 81. This allows the front bezel 4, side bezel 5, and square bezel 6 to be appropriately fixed in place while being sandwiched between the watch case 2 and the top bezel 7.

[0028] As described above, according to this embodiment, when the exterior part 30 made of a brittle material is arranged around the watch case 2, which is a rigid body, the flat area on the inner surface abuts against the flat area on the outer surface of the watch case 2. Specifically, the watch case 2 includes a first case-side flat surface 26a and a second case-side flat surface 26b, which are flat areas on the outer surface. Of the exterior part 30, the front bezel 4 includes a first abutment surface 41a, which is a flat area on the inner surface, and the side bezel 5 includes a second abutment surface 51a, which is a flat area on the inner surface. When the front bezel 4 is arranged around the watch case 2, the first abutment surface 41a abuts against the first case-side flat surface 26a of the watch case 2. When the side bezel 5 is arranged around the watch case 2, the second abutment surface 51a abuts against the second case-side flat surface 26b of the watch case 2. This allows the front bezel 4 and side bezels 5, which are made of a brittle material, to come into surface contact with the rigid watch case 2, preventing the front bezel 4 and side bezels 5 from moving in the event of an impact. Support members for absorbing impact are generally made of elastic materials, but if a brittle material such as sapphire is supported by an elastic material, excessive deformation may occur in the event of an impact, resulting in breakage. Therefore, by preventing the front bezel 4 and side bezels 5 from moving in the event of an impact, damage to the exterior component 30 can be prevented. This, in turn, improves the impact resistance of the timepiece 100. Therefore, the watch case 2 can be suitably exteriorized with an exterior component 30 made of a brittle material.

[0029] Furthermore, according to this embodiment, when the side bezels 5 are arranged around the watch case 2, the first curved surface 51b on the inner surface is spaced apart from the first case-side curved surface 26c on the outer surface of the watch case 2. This allows the second abutment surface 51a of the side bezel 5 to abut more reliably against the second case-side flat surface 26b of the watch case 2. Note that, similar to the side bezels 5, the curved surface area of ​​the front bezel 4 other than the first abutment surface 41a may also be spaced apart from the curved surface area of ​​the watch case 2 other than the first case-side flat surface 26a.

[0030] Furthermore, according to this embodiment, the multiple exterior components 30 (front bezel 4, side bezels 5, square bezel 6 (square bezel main body 61), and top bezel 7) are arranged around the watch case 2 so that they do not come into contact with one another. This prevents the exterior components 30 from coming into direct contact with one another and causing damage. Therefore, the watch case 2 can be suitably exteriorized with the multiple exterior components 30.

[0031] Furthermore, according to this embodiment, metal spacers (spacers 81, holding members 62) are interposed between the multiple exterior components 30. This makes it possible to prevent damage caused by the multiple exterior components 30 coming into contact with each other. Furthermore, the holding members 62, which are arranged as spacers between the front bezel 4 and the side bezel 5, may be formed integrally with the watch case 2.

[0032] Furthermore, according to this embodiment, a spacer 81 is disposed between the top bezel 7 (first component) disposed above the watch case 2 and the front bezel 4 and side bezel 5 (second components) disposed to the sides of the watch case 2. This makes it possible to prevent damage caused by contact between the front bezel 4 and side bezel 5 and the top bezel 7.

[0033] Furthermore, according to this embodiment, the multiple exterior components 30 include one top bezel 7 arranged above the watch case 2, and multiple front bezels 4 and side bezels 5 arranged to the sides of the watch case 2. In other words, the exterior components 30 are arranged divided into multiple parts both in the vertical and circumferential directions. This makes it easier to abut each exterior component 30 individually against each part of the watch case 2. Furthermore, because the exterior components 30 can be divided into multiple parts in each direction, it is easy to polish each surface of each exterior component 30 to a mirror finish.

[0034] Furthermore, according to this embodiment, the watch case 2 is formed in a generally polygonal shape including multiple sides when viewed from above, and the front bezel 4 and side bezel 5 (second parts) are arranged to correspond to the multiple sides of the watch case 2. This allows the front bezel 4 and side bezel 5 to be in suitable surface contact with each side of the watch case 2, while also allowing the outer surface of the watch case 2 to be suitably exteriorized.

[0035] Furthermore, according to this embodiment, the exterior part 30 includes a corner bezel 6 (corner bezel main body 61) that is arranged between the adjacent front bezel 4 and side bezel 5. This allows the corners of the watch case 2 to be suitably exteriorized in addition to the sides thereof.

[0036] It goes without saying that the embodiments to which the present invention can be applied are not limited to the above-described embodiments, and various modifications are possible without departing from the spirit of the present invention. For example, in the above-described embodiment, the exterior component 30 that exteriorly covers the watch case 2 is divided into multiple parts both in the circumferential direction and in the vertical direction of the watch case 2. However, the multiple exterior components according to the present invention only need to be arranged around the watch case so as not to come into contact with each other, and there are no particular limitations on how they are divided.

[0037] For example, in the above embodiment, the front bezel 4 and the side bezel 5 are arranged to correspond to each side of the watch case 2, and the corner bezel 6 is arranged between the front bezel 4 and the side bezel 5, but the circumferential division is not limited to this. For example, as shown in FIG. 9(A), each exterior component 30A may be arranged so as to include a corner of the watch case 2 and span two adjacent sides. In this case, one of the two flat surface areas 31a on both sides of the exterior component 30A abuts the opposing flat surface area 26d of the watch case 2. In this case, it is also preferable that the curved surface area 31b between the two flat surface areas 31a of the exterior component 30A is separated from the opposing curved surface area 26e of the watch case 2. Alternatively, as shown in Figure 9(B), each exterior component 30B may be arranged over a corner of the watch case 2 and part of the adjacent side. However, it is preferable to divide it so that it does not interfere with the operation button 9 (or crown) and does not make assembly difficult. In this case, the flat surface area 32a of the exterior component 30B abuts against the opposing flat surface area 26f of the watch case 2. Also in this case, it is preferable that the curved surface area 32b of the exterior component 30B other than the flat surface area 32a is spaced apart from the opposing curved surface area 26g of the watch case 2.

[0038] Furthermore, the position of the contact surface of exterior part 30 against watch case 2 is not particularly limited as long as it can suitably restrict movement of said exterior part 30. For example, it may be located at an end rather than the center of exterior part 30. It is preferable that said contact surface be set so as to ensure as large an area as possible, corresponding to the division mode of exterior part 30 described above.

[0039] In addition, the lower surface of the exterior part 30 (for example, the lower surface of the top bezel 7) made of a translucent material may be coated or vapor-deposited with an opaque layer to prevent internal parts such as double-sided tape from being visible from the front side. [Explanation of symbols]

[0040] 2...watch case, 3...bezel unit (exterior part unit), 4...front bezel (second part), 5...side bezel (second part), 6...corner bezel (third part), 7...top bezel (first part), 10...watch module, 26a...first case side flat surface (flat area), 26b...second case side flat surface (flat area), first case side curved surface 26c (curved area), 30, 30A, 30B...exterior part, 41a...first contact surface (flat area), 51a...second contact surface (flat area), first curved surface 51b (curved area), 62...holding member (spacer), 81...spacer, 100...watch

Claims

1. Made of brittle material, When arranged around a rigid watch case, the flat area on the inner surface abuts against the flat area on the outer surface of the watch case. Exterior parts.

2. When arranged around the watch case, the curved area on the inner surface is spaced apart from the curved area on the outer surface of the watch case. The exterior part according to claim 1 .

3. A plurality of exterior components according to claim 1 or 2 are provided, The plurality of exterior components are arranged around the watch case so as not to come into contact with each other. Exterior parts unit.

4. Further, a metal spacer is provided between the plurality of exterior components. The exterior part unit according to claim 3 .

5. The spacer is integrally formed with the watch case. The exterior part unit according to claim 4 .

6. The spacer is disposed between a first part disposed above the watch case and a second part disposed to the side of the watch case. The exterior part unit according to claim 4 .

7. The plurality of exterior components include one first component disposed above the watch case and a plurality of second components disposed to the sides of the watch case. The exterior part unit according to claim 3 .

8. The watch case is formed in a generally polygonal shape including multiple sides when viewed from above, the plurality of second components are arranged corresponding to the plurality of sides; The exterior part unit according to claim 7.

9. the plurality of exterior components include a third component disposed between two adjacent ones of the plurality of second components, The exterior part unit according to claim 8.

10. A clock module; a rigid watch case that houses the watch module; an exterior part made of a brittle material, which, when arranged around the watch case, has a flat area on its inner surface that abuts against a flat area on the outer surface of the watch case; A watch equipped with.

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