Exterior component unit and timepiece

Abstract

An exterior component unit is provided with: a first component which contains a brittle material and is fixed to the upper side of a timepiece case having an opening so as to surround the opening; and a second member which contains a brittle material, is disposed on the side of the timepiece case, is fixed to the timepiece case so as to restrict the movement to the side, and is restricted by the first member from moving upward.

Description

Technical Field

[0001] The present disclosure relates to an exterior component unit and a timepiece. Background Art

[0002] Japanese Patent Application Publication No. 2021-169968 discloses a watch equipped with a crown protection component. The protection component is fixed to the side of the exterior case with bolts. However, if brittle materials such as sapphire are used for exterior components like this protection component, it is difficult to machine the bolt holes due to the easy breakage. Summary of the Invention

[0003] Problems to be solved by the invention

[0004] The present disclosure has been made in view of the above circumstances, and an object thereof is to appropriately fix an exterior component to a timepiece case without using screw parts such as bolts.

[0005] Solutions to Problems

[0006] In order to achieve the above-mentioned object, the exterior component unit disclosed in the present invention comprises:

[0007] a first part comprising a brittle material and fixed to the upper side of a watch case having an opening so as to surround the opening; and

[0008] The second part is made of a brittle material and is disposed on the side of the watch case. The second part is fixed to the watch case so as to restrict lateral movement thereof, and upward movement thereof is restricted by the first part.

[0009] The effects of the invention are as follows.

[0010] According to the present disclosure, it is possible to appropriately fix exterior components to a timepiece case without using screw components. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of the main part of the timepiece according to the embodiment.

[0012] Figure 2 It is an exploded perspective view of the main parts of the timepiece according to the embodiment.

[0013] Figure 3 yes Figure 1 A partial cross-sectional view of the clock at line III.

[0014] Figure 4 yes Figure 1 A partial cross-sectional view of the clock at line IV.

[0015] Figure 5 It is a diagram showing the contact surface between the side bezel and the watch case according to the embodiment.

[0016] Figure 6 yes Figure 1 A partial cross-sectional view of the clock taken along line VI.

[0017] Figure 7 It is an exploded perspective view of the corner bezel according to the embodiment.

[0018] Figure 8 yes Figure 1 Partial cross-section of the watch at line VIII.

[0019] Figure 9A 、 Figure 9B It is an exploded perspective view showing a modified example of the fixing structure of the corner bezel.

[0020] Figure 10A 、 Figure 10B is a cross-sectional view for explaining a modified example of the fixing structure of the corner bezel. Figure 10A yes Figure 1 The cross-sectional view at the position of line IX, Figure 10B yes Figure 1 Cross-sectional view of the X-ray position.

[0021] Figure 11 It is a front view of the main part of a timepiece according to a modification of the embodiment.

[0022] Explanation of symbols

[0023] 2. 2A—watch case, 3—bezel unit (exterior part unit), 4. 4B—front bezel (second part), 5. 5B—side bezel (second part), 6. 6A, 6B—corner bezel, 7—upper bezel (first part), 10—watch module, 21—opening, 23—windproof part, 25a—step surface (step difference surface), 30—exterior part, 61. 61A, 61B—corner bezel body (third part), 62. 62A, 62B—retaining part, 82—second liner (fixing part), 231—first liner, 100—watch. DETAILED DESCRIPTION

[0024] Hereinafter, the embodiments of the present disclosure will be described with reference to the accompanying drawings. Figure 1 and Figure 2As shown, the timepiece 100 of this embodiment is a wristwatch worn on a user's wrist. Specifically, the timepiece 100 includes a timepiece case 2 and a bezel unit 3. In the following description, the X, Y, and Z directions of the timepiece 100 refer to the orientations shown in the respective figures. Specifically, the X direction refers to the 3:00-9:00 direction of an analog timepiece, the Y direction refers to the 12:00-6:00 direction, and the Z direction refers to the front-to-back direction of the timepiece 100 (the timepiece case 2). In the Z direction, the front side, which is the visually visible side, is referred to as the "upper side," and the back side is referred to as the "lower side." Furthermore, the direction perpendicular to the central axis Ax of the timepiece case 2 along the Z direction is referred to as the "radial direction," the direction of rotation about 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 farther away is referred to as the "outer side (outer diameter side)."

[0025] The watch case 2 is formed into a substantially square cylindrical shape when viewed from the front (top), with an opening 21 on the front side (upper side) blocked by a transparent windshield member 23 that transmits visible light, and an opening on the back side (lower side) blocked by a back cover 24 (see FIG. Figure 3 The material (raw material) of the watch case 2 is, for example, a metal such as titanium, stainless steel, or a hard resin such as carbon. The watch case 2 can be a rigid body and its raw material can be any brittle material without any particular limitation. The watch module 10 (see FIG. 1 ) is housed inside the watch case 2. Figure 3 The watch module 10 includes, for example, a time display unit that displays the time, a battery as a power source, a circuit board on which a control circuit is mounted, etc. Furthermore, the top view shape of the watch case 2 is not limited to a square tube, and may be, for example, a polygon other than a quadrilateral, or a circle.

[0026] like Figure 2 and Figure 3 As shown, the outer surface of the watch case 2 is formed with a stepped portion 25, which is located on the outer diameter side in stages from the upper side to the lower side, roughly throughout the entire circumference. The stepped portion 25 has a stepped surface 25a facing upward and approximately perpendicular to the Z direction. The portion of the watch case 2 above the stepped portion 25 forms a cylindrical portion 26, which has a rounded square cylindrical shape when viewed from above. The windproof component 23 is embedded in the opening 21 on the inner diameter side of the cylindrical portion 26 via a first gasket 231.

[0027] The bezel unit 3 is an example of an exterior parts unit disclosed in the present invention, and includes two front bezels 4, two side bezels 5, four corner bezels 6, an upper bezel 7, and a spacer 81. The exterior parts 30 (front bezel 4, side bezel 5, the corner bezel body 61 described below, and the upper bezel 7) in the bezel unit 3, except for the retaining parts 62 of the corner bezel 6 described below and the spacer 81, are made of a light-transmitting material that allows visible light to pass, such as sapphire glass. The material (raw material) of the exterior parts 30 is not limited to light-transmitting materials, and widely includes, for example, brittle materials such as inorganic glass, ceramics, and shells. In addition, the exterior parts 30 are not particularly limited, and all surfaces are mirror-finished to a predetermined smoothness.

[0028] In a plane perpendicular to the Z direction, the two front bezels 4, the two side bezels 5, and the four corner bezels 6 of the bezel unit 3, excluding the upper bezel 7, are arranged in a ring shape as a whole to cover the outer side surface of the watch case 2. Among them, the front bezel 4 and the side bezel 5 are an example of the second part of the present disclosure, which are arranged on the side (outer side) of the watch case 2 and fixed to the watch case 2 in a manner that restricts lateral movement. In more detail, the front bezel 4 and the side bezel 5 correspond to the four sides of the roughly quadrilateral watch case 2 and are arranged along each side. The corner bezel 6 is an example of the third part of the present disclosure, which is arranged between two adjacent ones of the multiple front bezels 4 and side bezels 5 (that is, the corners of the four corners of the watch case 2).

[0029] Two front bezels 4 are arranged on either side of the watch case 2 in the Y direction. Each front bezel 4 is formed to extend in the X direction, corresponding to the Y-direction side of the watch case 2. Furthermore, each front bezel 4 is arranged to cover the upper side of a band attachment portion 29 in the watch case 2, to which a watch band (not shown) is attached. Each front bezel 4 is formed in a generally inclined plate shape, corresponding to the shape of the band attachment portion 29, with the shape gradually decreasing in the Y direction as it moves away from the central axis Ax.

[0030] The inner diameter end 41 of each front bezel 4 is fixed to the watch case 2 by abutting. Specifically, the central portion of the inner side surface of the end 41, excluding the two sides in the X direction, becomes a planar first abutting surface 41a. The portion of the watch case 2 corresponding to the first abutting surface 41a becomes the two side portions in the Y direction of the outer side surface of the cylindrical portion 26 and the planar first case side plane 26a that is roughly orthogonal to the radial direction. When each front bezel 4 is arranged around the watch case 2, the first abutting surface 41a abuts against the first case side plane 26a of the watch case 2. The lower surface of the end 41 of each front bezel 4 abuts against the step surface 25a of the watch case 2 via the double-sided tape 83a. In other words, the lower surface of the end 41 and the step surface 25a of the watch case 2 are bonded by the double-sided tape 83a.

[0031] like Figure 2 、 Figure 4 and Figure 5 As shown, 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 extending in the Y direction corresponding to the side portion of the watch case 2 in the X direction.

[0032] The end 51 on the inner diameter side of each side bezel 5 is fixed in contact with the watch case 2. Specifically, the central portion of the inner side surface of the end 51, excluding the two sides in the Y direction, becomes a planar second abutting surface 51a. The portion of the watch case 2 corresponding to the second abutting surface 51a becomes the two side portions in the X direction of the outer side surface of the cylindrical portion 26 and a planar second case side plane 26b that is approximately orthogonal to the radial direction. When each side bezel 5 is arranged around the watch case 2, the second abutting surface 51a abuts against the second case side plane 26b of the watch case 2. The lower surface of the end 51 of each side bezel 5 abuts against the step surface 25a of the watch case 2 via the double-sided tape 83d. In other words, the lower surface of the end 51 of each side bezel 5 and the step surface 25a of the watch case 2 are bonded 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 addition, Figure 5 In the figure, the second contact surface 51 a and the second housing side plane 26 b are shown with dot patterns for easy understanding of the range, but the surface conditions of their planar regions are not particularly limited.

[0033] like Figure 2 and Figure 6 As shown, the portion of each side bezel 5 corresponding to the plurality of operating buttons 9 is formed with a U-shaped relief groove 52 that opens downward. Each operating button 9 is fixed to the portion of the watch case 2 below the cylindrical portion 26, extending in a direction that intersects both the X and Y directions and generally along the radial direction. Each operating button 9 includes a decorative member 91, a button tube 92, and a push button 93. The decorative member 91 is formed into a roughly cylindrical shape and is arranged in the relief groove 52 so as to sandwich a buffer body 94 (e.g., made of nitrile rubber) between the decorative member 91 and the side bezel 5 without direct contact. The side bezel 5 is pressed radially inward by the decorative member 91 via the buffer body 94. The button tube 92 is inserted into the decorative member 91 and is screwed to the watch case 2 with the flange portion extending radially outward pressing against the decorative member 91. The button tube 92 and the watch case 2 are sealed by an O-ring 95. The push button 93 is inserted through the button tube 92 and supported so as to be radially depressible. In addition, when the timepiece 100 is an analog display type and has a crown, the side bezel 5 can be constructed in the same manner as in this embodiment to avoid contact with the crown.

[0034] like Figure 1 、 Figure 2 、 Figure 7 and Figure 8As shown, four corner bezels 6 are arranged at the corners between the front bezel 4 and the side bezel 5 in the watch 100 when viewed from above. Each corner bezel 6 has a corner bezel body 61 and a retaining member 62 that retains the corner bezel body 61. The corner bezel body 61 is formed into a roughly prism shape that is longer in the Z direction. The surface of the corner bezel body 61 corresponding to the inner diameter side of the watch case 2 is formed into a stepped shape having a step surface 61a facing downward. The retaining member 62 has a groove that is open radially outward and along the Z direction, and the corner bezel body 61 is accommodated in the groove. The retaining member 62 has a step surface 62a facing upward that corresponds to the step surface 61a of the corner bezel body 61 in the groove. The angle bezel body 61 is bonded to the retaining member 62 by an adhesive in a state where the step surface 61a abuts against the step surface 62a of the retaining member 62 along the X direction and the end surface 61b on the inner diameter side abuts against the groove bottom surface 62b of the retaining member 62 along the radial direction. The method of joining the angle bezel body 61 and the retaining member 62 is not limited to an adhesive, and for example, a double-sided tape may be used. A convex portion 621 extending in the Z direction is formed on the surface on the inner diameter side of the retaining member 62. At each of the four corners of the watch case 2, a groove portion 28 extending in the Z direction is formed corresponding to the convex portion 621 (see FIG. 2 ). Figure 2 ). Each corner bezel 6 is arranged at the corner of the watch case 2 by fitting the protrusion 621 of the retaining component 62 into the groove 28 of the watch case 2. The top surface of the protrusion 621 of the retaining component 62 and the bottom surface of the groove 28 of the watch case 2 are bonded by a double-sided tape 83e. At this time, the downward step surface 621a formed at the lower end of the protrusion 621 of the retaining component 62 abuts against the upward step surface 28a in the groove 28 of the watch case 2. The retaining component 62 is sandwiched between the front bezel 4 and the side bezel 5, or between the front bezel 4 or the side bezel 5 and the corner bezel body 61 in the circumferential direction. The material (raw material) of the retaining component 62 is, for example, a metal such as titanium or stainless steel, or a hard resin such as carbon. Among them, the retaining component 62 can be a rigid body, and its raw material can be any material other than a brittle material, without any special limitation.

[0035] like Figure 2 and Figure 3As shown, the upper bezel 7 is an example of the first part of the present invention and is arranged above the watch case 2. The upper bezel 7 is a square ring in a plan view corresponding to the shape of the watch case 2, and is formed in a shape with a flange portion 71 extending inward throughout the entire circumference. The upper bezel 7 is fixed to the watch case 2 by being pressed into the outer diameter side of the cylindrical portion 26 of the watch case 2. The upper bezel 7 is fixed to the upper side of the watch case 2 in a manner that surrounds the opening 21 of the watch case 2 (that is, in a manner that surrounds the windproof component 23 that is fitted with the opening 21). In addition, the fixing method of the upper bezel 7 relative to the watch case 2 is not limited to pressing in. A second gasket 82 is arranged between the upper bezel 7 and the cylindrical portion 26 so that they do not directly contact each other. The second gasket 82 is made of a different material than the first gasket 231 and has a lower hardness (softer) than the first gasket 231. The flange portion 71 of the upper bezel 7 is arranged above the cylindrical portion 26 and the first gasket 231 so that the cylindrical portion 26 and the first gasket 231 cannot be visually recognized from the front side.

[0036] The upper bezel 7 clamps and secures the annularly arranged front bezel 4, side bezels 5, and corner bezels 6 between the watch case 2 in the Z direction, restricting their upward movement. Specifically, the end 41 of each front bezel 4 is fixed between the stepped surface 25a of the watch case 2 and the lower end surface of the upper bezel 7, while the end 51 of each side bezel 5 is fixed between the stepped surface 25a of the watch case 2 and the lower end surface of the upper bezel 7. The retaining member 62 of each corner bezel 6 is fixed between the stepped surface 28a of the watch case 2 and the lower end surface of the upper bezel 7, while the corner bezel body 61 is fixed between the stepped surface 62a of the retaining member 62 and the lower end surface of the upper bezel 7.

[0037] The upper bezel 7 has a metal (e.g. titanium) spacer 81 sandwiched between the front bezel 4, the side bezel 5 and the corner bezel 6 (corner bezel body 61) in a manner that does not directly contact them. The spacer 81 is formed into a square ring plate corresponding to the upper bezel 7 when viewed from above, and is arranged below the upper bezel 7 over the entire circumference of the watch case 2. Double-sided tape 83b is affixed to the lower surface of the spacer 81, and the double-sided tape 83b adheres the spacer 81 to the front bezel 4, the side bezel 5 and the corner bezel 6 (corner bezel body 61 and retaining component 62). Double-sided tape 83c is affixed to the upper surface of the spacer 81, and the double-sided tape 83c adheres the spacer 81 to the upper bezel 7. The material (raw material) of the spacer 81 is, for example, a metal such as titanium or stainless steel, or a hard resin such as carbon. Among them, the spacer 81 can be a rigid body, and its raw material can be any brittle material, without any special limitation.

[0038] Next, the procedure for assembling the bezel unit 3 to the watch case 2 will be described. The watch module 10 is previously housed in the watch case 2, the windshield member 23 and the back cover 24 are attached, and the operating button 9 is assembled. Furthermore, the four corner bezels 6 are assembled.

[0039] First, if Figure 2 and Figure 8 As shown, four corner bezels 6 are attached to the four corners of the watch case 2. Specifically, the corner bezels 6 are positioned at each corner of the watch case 2 by fitting the inner diameter-side projections 621 of the retaining member 62 of the corner bezel 6 into the grooves 28 of the corners of the watch case 2. Each corner bezel 6 is temporarily secured by adhering double-sided tape 83e affixed to the top surface of the projections 621 to the bottom surface of the grooves 28 of the watch case 2. At this point, the downward-facing stepped surface 621a formed on the lower end of the projections 621 of the retaining member 62 is brought into contact with the upward-facing stepped surface 28a within the grooves 28 of the watch case 2.

[0040] Then, if Figure 2 、 Figure 3 and Figure 4 As shown, the two front bezels 4 and the two side bezels 5 are sequentially attached to the watch case 2. With the first abutting surface 41a of each end 41 radially abutting the first case-side plane 26a of the watch case 2, the lower surface of each end 41 is temporarily secured by adhering it to the stepped surface 25a of the watch case 2 with double-sided tape 83a. With the second abutting surface 51a of each end 51 radially abutting the second case-side plane 26b of the watch case 2, the lower surface of each end 51 is temporarily secured by adhering it to the stepped surface 25a of the watch case 2 with double-sided tape 83d. At this point, the upper end surfaces of the front bezel 4, side bezel 5, and corner bezel 6 are approximately flush with each other within a plane approximately perpendicular to the Z direction.

[0041] Next, the spacer 81 is placed on the watch case 2. Double-sided tape 83c and 83b are attached to the upper and lower surfaces of the spacer 81, so that the cylindrical portion 26 is inserted through the spacer 81. The double-sided tape 83b on the lower surface of the spacer 81 is adhered to the upper surfaces of the front bezel 4, side bezel 5, and corner bezel 6, thereby temporarily securing the spacer 81.

[0042] Next, the upper bezel 7 is mounted on the watch case 2. Having previously positioned the second gasket 82 on the outer diameter side of the cylindrical portion 26 of the watch case 2, the upper bezel 7 is pressed from above into the outer diameter side of the cylindrical portion 26 via the second gasket 82. The upper bezel 7 is pressed in until it fully contacts the front bezel 4, side bezels 5, and corner bezels 6 via the spacers 81. This secures the front bezel 4, side bezels 5, and corner bezels 6, while being sandwiched between the watch case 2 and the upper bezel 7.

[0043] As described above, according to this embodiment, the upper bezel 7 (first component) made of a brittle material is fixed to the upper side of the watch case 2 in a manner that surrounds the opening 21. The front bezel 4 and side bezels 5 (second components) also made of a brittle material are arranged on the sides of the watch case 2 and fixed to the watch case 2 in a manner that restricts lateral movement (inner diameter side), and upward movement is restricted by the upper bezel 7. As a result, the exterior component 30 can be appropriately fixed to the watch case 2 without directly fixing the upper bezel 7, front bezel 4, and side bezel 5 to the watch case 2 using screw parts. Furthermore, the threaded holes that reduce the strength of the exterior component 30 are no longer required, and the impact resistance of the watch 100 can be improved.

[0044] Furthermore, according to this embodiment, the upper bezel 7 is fixed to the watch case 2 so as to surround the windshield member 23 that blocks the opening 21 of the watch case 2. Thus, for example, the upper bezel 7 can cover and hide the retaining portion (the cylindrical portion 26 and the first liner 231) surrounding the windshield member 23 so as to prevent it from being visually recognized from the front.

[0045] Furthermore, according to this embodiment, a second gasket 82 (fixing member) is disposed between the inner surface of the upper bezel 7 and the upper cylindrical portion 26 of the metal watch case 2. This prevents direct contact (abutment) between the upper bezel 7 and the watch case 2, thereby suppressing damage to the upper bezel 7, which is made of a brittle material. Furthermore, the fixing member interposed between the upper bezel 7 and the watch case 2 (cylindrical portion 26) only needs to prevent direct contact between the upper bezel 7 and the watch case 2 and properly secure them. It does not need to be a gasket, but may instead be an adhesive, for example.

[0046] Furthermore, according to this embodiment, the second gasket 82 interposed between the upper bezel 7 and the watch case 2 is lower in hardness (softer) than the first gasket 231 interposed between the windshield member 23 and the watch case 2. Thus, even when the windshield member 23 is pre-engaged (pressed into) the inner diameter side of the watch case 2 (cylindrical portion 26), the upper bezel 7 can be appropriately pressed into the outer diameter side of the watch case 2 (cylindrical portion 26).

[0047] Furthermore, according to the present embodiment, the movement of the front bezel 4 and the side bezel 5 (second part) arranged on the side of the watch case 2 to the side of the watch case 2 is restricted by the double-sided tape (adhesive tape) 83a, 83d sandwiched between the step surface (step difference surface) 25a of the watch case 2. As a result, the front bezel 4 and the side bezel 5 can be fixed more firmly. In addition, the component that restricts the movement of the second part may not be the double-sided tape 83a, 83d attached to the step surface 25a. For example, a gasket or adhesive may be sandwiched between the second part and the side of the watch case 2 (for example, the first case side plane 26a and the second case side plane 26b). Even in this case, the movement of the second part to the side of the watch case 2 can be appropriately suppressed by the gasket or adhesive.

[0048] In addition, the embodiments to which the present disclosure can be applied are not limited to the above-mentioned embodiments, and various modifications can be made without departing from the scope of the main purpose of the present disclosure. For example, in the above-mentioned embodiment, the exterior parts 30 of the exterior watch case 2 are divided and arranged into multiple parts in the circumferential direction and in the vertical direction of the watch case 2. However, the exterior parts unit of the present disclosure only needs to include a first part fixed to the upper side of the watch case and a second part arranged on the side of the watch case, and the division method is not particularly limited. For example, the second part arranged on the side of the watch case can also be an integrated annular component.

[0049] Furthermore, in the above embodiment, the corner bezel 6 is directly fixed to the watch case 2 only by the double-sided tape 83e. Therefore, if the adhesive force of the double-sided tape 83e decreases and the pressure of the upper bezel 7 in the Z direction is loosened, there is a concern that the corner bezel 6 will fall off to the outer diameter side (outer side). Therefore, for example, the corner bezel 6 can also be directly fixed to the watch case 2. Specifically, if Figure 9A 、 Figure 9B as well as Figure 10A 、 Figure 10BAs shown, the watch case 2A in this case has pocket-shaped locking recesses 28A that open upward at the four corners where the corner bezel 6A is located. The sidewall of the locking recess 28A has a cutout 281A at the circumferential center and approximately half of the upper portion. The retaining member 62A of the corner bezel 6A has a locking protrusion 622A formed on its inner diameter surface, corresponding to the locking recess 28A of the watch case 2A and protruding downward. The circumferential center of the opening of the locking protrusion 622A forms a solid portion 623A that fits into the cutout 281A of the locking recess 28A. With the corner bezel body 61A bonded as in the above embodiment, the retaining member 62A inserts the locking protrusion 622A from above and locks it into the locking recess 28A of the watch case 2A. During insertion, the solid portion 623A of the locking protrusion 622A is guided by the notch 281A of the locking recess 28A. Furthermore, by pre-filling the locking recess 28A with adhesive, the locking protrusion 622A and the locking recess 28A are more securely fixed. Thus, the corner bezel body 61A, while adhered to the retaining member 62A (metal component) sandwiched between the adjacent front bezel 4 and side bezels 5 and the corner bezel body 61A, is locked to the watch case 2A by this retaining member 62A, restricting outward movement. This prevents contact between the front bezel 4, side bezel 5, and corner bezel body 61A, thus preventing damage to them and preventing the corner bezel 6A from falling out of the watch case 2A.

[0050] Alternatively, the front bezel and the side bezel (two second parts) adjacent in the circumferential direction may limit the movement of the corner bezel (third part) therebetween. Figure 11 As shown, the front bezel 4B and side bezel 5B, located on either side of the angular bezel 6B in the circumferential direction, are inclined so that the two side surfaces 43B and 53B, circumferentially opposed by the angular bezel 6B, approach each other as they radially move away from the center axis Ax of the watch case 2. Furthermore, the circumferential side surfaces of the retaining member 62B of the angular bezel 6B, circumferentially opposed to the front bezel 4B and side bezel 5B, are also inclined so that the width narrows as they radially move away from the center axis Ax of the watch case 2. Thus, with the retaining member 62B (metal component) sandwiched between the adjacent front bezel 4B and side bezel 5B and the angular bezel body 61B, the outward movement of the angular bezel 6B is restricted by the front bezel 4B and side bezel 5B. Consequently, contact between the front bezel 4B, side bezel 5B, and angular bezel body 61B is avoided, preventing damage to them and preventing the angular bezel 6B from falling out of the watch case 2.

[0051] Furthermore, the contact surface between the exterior component 30 and the watch case 2 is not particularly limited in position, as long as it appropriately restricts the movement of the exterior component 30. For example, it may be located at an end rather than the center of the exterior component 30. The contact surface is preferably designed to ensure as large an area as possible, corresponding to the aforementioned division of the exterior component 30.

[0052] Furthermore, the lower surface of the exterior component 30 (eg, the lower surface of the upper bezel 7 ) made of a light-transmitting material may be coated or vapor-deposited with an opaque layer, so that internal components such as double-sided tape cannot be visually identified from the front side.

[0053] Furthermore, the present disclosure can be widely applied to an exterior component unit (exterior component structure) that secures a first component and a second component, each made of a brittle material, to a watch case without using screws. The material of the exterior components other than the first component and the second component is not limited to brittle materials. The material of the watch case is also not particularly limited.

Claims

1. An exterior component unit, characterized in that: have: a first part comprising a brittle material and fixed to the upper side of a watch case having an opening so as to surround the opening; and The second part is made of a brittle material and is disposed on the side of the watch case. The second part is fixed to the watch case so as to restrict lateral movement thereof, and upward movement thereof is restricted by the first part.

2. The exterior component unit according to claim 1, wherein: The first part is fixed to the watch case so as to surround a windproof member that closes the opening of the watch case.

3. The exterior component unit according to claim 2, wherein: The watch case is made of metal. A fixing member is arranged between the inner side surface of the first part and the upper portion of the watch case.

4. The exterior component unit according to claim 2, wherein: have: a first gasket interposed between the windproof member and the watch case; and A second gasket is provided between the first part and the watch case. The second gasket has a lower hardness than the first gasket.

5. The exterior component unit according to claim 1, wherein: Movement of the second part to the side of the watch case is restricted by a gasket or adhesive interposed between the second part and the side surface of the watch case, or by an adhesive tape interposed between the second part and the step surface of the watch case.

6. The exterior component unit according to claim 1, wherein: A plurality of the second parts are arranged on the side of the watch case. The exterior component unit further includes a third component, the third component comprising a brittle material and arranged between two adjacent second components among the plurality of second components. The third part is bonded to the metal member sandwiched between the two adjacent second parts. The metal member is locked to the watch case and its movement toward the outside is restricted.

7. The exterior component unit according to claim 1, wherein: A plurality of the second parts are arranged on the side of the watch case. The exterior component unit further includes a third component made of a brittle material and arranged between two adjacent second components among the plurality of second components. In a state where the metal member is interposed between the two adjacent second parts, the outward movement of the third part is restricted by the two adjacent second parts.

8. A timepiece, characterized in that: have: Clock module; a watch case, which houses the watch module and has an opening; a first part made of a brittle material and fixed to the upper side of the watch case so as to surround the opening; as well as The second part is made of a brittle material and is arranged on the side of the watch case and fixed to the watch case so as to restrict lateral movement. The second part is also restricted in upward movement by the first part.

Images