Timepiece, timepiece case, and timepiece manufacturing method

Abstract

The invention provides a timepiece and a timepiece case which can correctly fix a windshield and can restrain reduction of aesthetics caused by adhesives. A timepiece is provided with: a case having an open first end; a member located at the first end; and an adhesive that joins the housing and the member, the housing having: a protruding part that protrudes inward from the inner peripheral surface of the housing and extends in the circumferential direction; and a protrusion provided so as to protrude inward from the inner peripheral surface, in the member, at least one of a side surface of the member and the inner peripheral surface and a peripheral edge of a lower surface of the member and an upper surface of the protrusion is bonded via the adhesive, and a gap is provided in an opposing portion of the protrusion along the member. The volume of the gap in a partial region including the position of the protrusion in the facing portion is larger than the volume of the gap in a portion other than the partial region of the facing portion.

Description

[0001] This application is a divisional application: the application number of the parent case is "202210652000.4", and the name of the invention is "Clock and watch case".

[0002] This application claims priority based on Japanese Patent Application No. 2021-096882 filed on June 9, 2021, and all of the disclosure thereof is incorporated herein by reference. Technical Field

[0003] The invention relates to a timepiece, a timepiece casing and a method for manufacturing the timepiece. Background Art

[0004] In a timepiece, especially a portable timepiece that is required to be waterproof and dustproof, a driving unit, a time display unit, etc. are housed in a housing (casing), and a transparent windshield located on the upper surface or the front side is joined to the housing so that the display content of the display unit can be observed from the outside. It is known that an adhesive is used for the joining.

[0005] Adhesives used for bonding are usually used in places that are not visible from the outside. However, since adhesives are fluid before bonding, some of them spread from the bonding surface during crimping and fixing. Therefore, if the spread becomes large and overflows to a position that can be observed and confirmed by the user, the aesthetics will be deteriorated. In contrast, Japanese Utility Model Publication No. 58-37586 discloses the following technology: by providing a space for the adhesive to stay on the bonding surface of the housing that is bonded to the windshield, unnecessary outflow to the outside of the bonding surface is suppressed. Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, if a gap for storing adhesive is simply provided between the side surface of the windshield and the housing, the position of the windshield relative to the housing cannot be determined, and there is a problem that positional deviation occurs, which deteriorates the appearance.

[0008] An object of the present invention is to provide a timepiece and a timepiece case capable of accurately fixing a windshield and suppressing a decrease in appearance due to an adhesive.

[0009] The present invention provides a timepiece, characterized in that it comprises: a shell with an open first end; a component located at the above-mentioned first end; a functional component located inside the above-mentioned shell; and an adhesive for joining the above-mentioned shell and the above-mentioned component, the above-mentioned shell having: a protrusion, which protrudes inwardly from the inner peripheral surface of the shell and extends in a circumferential direction; and a plurality of protrusions, which are arranged to protrude inwardly from the above-mentioned inner peripheral surface and define the position of the above-mentioned component relative to the inner peripheral surface, in the above-mentioned component, the side surface of the component is joined to the above-mentioned inner peripheral surface via the above-mentioned adhesive, and the peripheral edge of the lower surface of the above-mentioned component is joined to the upper surface of the above-mentioned protrusion via the above-mentioned adhesive, in the above-mentioned functional component, the outer peripheral surface of the functional component extends along the inner side surface of the above-mentioned protrusion, and there is a gap in the opposing portion of the above-mentioned protrusion and the above-mentioned functional component along the above-mentioned component, and the above-mentioned gap in a part of the opposing portion including the position of the above-mentioned protrusion is wider than the above-mentioned gap in the portion other than the above-mentioned part of the opposing portion.

[0010] In addition, the present invention provides a watch case, characterized in that it has a shell with an open first end, and the shell has: a protrusion, which protrudes inward from the inner circumferential surface of the shell and extends circumferentially, and a component covering the first end is arranged on the upper surface; and a plurality of protrusions, which are arranged to protrude inward from the inner circumferential surface, and when the above-mentioned components are arranged, there is a gap between the opposing parts of the above-mentioned protrusion and the above-mentioned component, and the volume of the above-mentioned gap in a partial area of ​​the above-mentioned opposing part including the position of the above-mentioned protrusion is larger than the volume of the above-mentioned gap in the part other than the above-mentioned partial area of ​​the above-mentioned opposing part.

[0011] Furthermore, the present invention provides a method for manufacturing a watch, characterized in that it includes a first step, in which a side surface of a component and a protrusion extending circumferentially from the inner circumferential surface of a case are joined together via an adhesive, at least one of the peripheral edge of the lower surface of the component and the upper surface of the above-mentioned protrusion; a component is arranged at an open first end of the above-mentioned case, the above-mentioned case is formed with a protrusion protruding inward from the above-mentioned inner circumferential surface, a gap is provided at the opposing portion of the above-mentioned protrusion along the above-mentioned component, and the volume of the above-mentioned gap in a partial area of ​​the above-mentioned opposing portion including the position of the above-mentioned protrusion is formed to be larger than the volume of the above-mentioned gap in a portion other than the above-mentioned partial area of ​​the above-mentioned opposing portion.

[0012] The effects of the invention are as follows.

[0013] According to the present invention, there is an effect that the windshield can be accurately fixed and degradation of the appearance of the timepiece due to the adhesive can be suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a diagram showing the upper surface of the timepiece according to the present embodiment.

[0015] Figure 2 This is a diagram showing a part of the cross section of the timepiece.

[0016] Figure 3 It is a figure explaining the incision position.

[0017] Figure 4 This is a diagram for explaining a state in which the parting plate is viewed from the side of a crack.

[0018] Figure 5 It is a cross-sectional view including the cross section of the protrusion.

[0019] Figure 6 It is a cross-sectional view showing a modification of the timepiece according to the present embodiment. DETAILED DESCRIPTION

[0020] Hereinafter, embodiments of the present invention will be described based on the drawings.

[0021] Figure 1 The upper surface of the timepiece 1 according to the present embodiment is shown.

[0022] The timepiece 1 is not particularly limited, and is, for example, a wristwatch that displays time using hands 2 .

[0023] The watch 1 includes: a housing 5 (watch case); a windshield 6 (not shown) (see FIG. Figure 2 ); a pointer 2 that displays the time by rotating under the windshield 6; a dial 3 that is located below the pointer 2 and has scales that are not shown; and a parting plate 8 that is located around the pointer 2 in a roughly annular shape along the inner circumferential surface 5a of the housing 5 on the dial 3. The windshield 6 is a member that transmits light (a light-transmitting member, member), and the dial 3, the pointer 2, and the parting plate 8 can be observed from the outside through the windshield 6.

[0024] The housing 5 accommodates various components (functional components) such as the control unit of the timepiece 1, the display unit including the above-mentioned pointer 2, dial 3 and parting plate 8, and batteries. The housing 5 has a cylindrical shape that is open at the top and bottom, and is a substantially cylindrical shape in this case. The material of the housing 5 is not particularly limited, and is a material that is appropriately bonded with the adhesive 7 described below, and in this case, for example, various resins. The windshield 6 is located at a position that covers one end (first end) of the open upper side of the housing.

[0025] The various components located within the housing 5 include the pointer 2 .

[0026] The side of the housing 5 opposite to the first end (the end on the lower side) may be open, and this end may be sealed by a rear cover (not shown) or the like.

[0027] Figure 2This is a diagram showing a part of the cross section of the timepiece 1 .

[0028] The housing 5 has a groove 51a on the upper surface of the protruding portion 51. The windshield 6 is supported and fixed by the upper surface of the protruding portion 51.

[0029] The windshield 6 has an annular film 61 (film layer) along the periphery of the lower surface. The film 61 is a colored (e.g., silver) non-light-transmitting film, for example, formed by printing on the windshield 6. The film 61 is a shielding film, and the adhesive 7 and the structure of the housing 5 located further below the film 61 are shielded by the film 61 and cannot be observed and confirmed from the upper side.

[0030] The adhesive 7 joins the film 61 (i.e., the periphery of the lower surface) of the windshield 6 to the upper surface of the protrusion, and joins the side surface to the inner peripheral surface 5a above the protrusion 51. The adhesive 7 is applied to the groove 51a, and the adhesive 7 on the protrusion 51 mainly stays in the groove 51a. In addition, there is a gap between the side surface and the inner peripheral surface 5a of the windshield 6, and the adhesive 7 also enters and stays in the gap. That is, due to the existence of the above-mentioned groove 51a and the gap, the adhesive 7 will not overflow from the joint surface to a large extent when it is pressed and heated. The adhesive 7 can be distributed to a degree that can obtain the required joint strength and the required waterproofness, dustproofness, etc., and does not necessarily fill the entire gap. The adhesive 7 is not particularly limited, and for example, it can be a thermosetting material. The thermosetting adhesive is a material that expands slightly (several percent, etc.) when heated and cured. The color of the adhesive 7 does not need to be colorless and transparent, and can also be colored (here, white is also included in the range of colored). In this way, the side surface of the windshield 6 is bonded to the inner peripheral surface 5 a of the housing 5 via the adhesive 7 , and the peripheral edge of the lower surface is bonded to the upper surface of the protruding portion 51 via the adhesive 7 .

[0031] Furthermore, the lower end of the side surface of the windshield 6 is chamfered so that the adhesive 7 can easily spread over the lower side and side surface of the windshield 6 during bonding. The chamfering can also be performed at an angle deeper than 45 degrees (the angle at which the chamfered surface 6a rises more steeply with respect to the bottom surface).

[0032] The outer peripheral surface 8a of the parting plate 8 faces the front end side surface (inner side surface) of the protrusion 51 (facing portion). There is a gap in the facing portion and along the windshield 6. The inner edge of the film 61 of the windshield 6 extends further inward than the outer edge of the parting plate 8. There may be a small gap between the upper surface of the parting plate 8 and the windshield 6.

[0033] Figure 3 It is a figure explaining the incision position.

[0034] like Figure 3As shown in (a), the housing 5 has protrusions 52 protruding from the inner peripheral surface 5a at multiple locations along the inner peripheral surface 5a, here at four locations at 90 degree intervals. The size of the circle passing through the front end of the protrusion 52 is substantially the same as the outer edge of the windshield 6 (actually slightly larger), thereby defining the position of the windshield 6 relative to the housing 5 (inner peripheral surface 5a). That is, the protrusions 52 may be located at three or more locations with an angle difference of less than 180 degrees in a manner that can define the circle. Furthermore, in the case where it is sufficient to provide the protrusion 52 at one or two locations depending on the shape of the windshield, the assembly method, etc., the number of the protrusions 52 may be one or two.

[0035] As described above, the distance from the center position of the housing 5 in a plan view to the inner peripheral surface 5a is locally very narrow in the cross section including the protrusion 52, so when the windshield 6 is joined to the housing 5, the adhesive 7 is squeezed out from the narrow portion and spreads to the surroundings due to the expansion caused by heating as described above. In particular, on the bottom surface side of the windshield 6, at a position further inside than the groove 51a, the gap between the windshield 6 and the protrusion 51 and the parting plate 8 is small, so the width of the adhesive 7 spreading inward is likely to be large relative to the volume of the squeezed adhesive 7. If the adhesive 7 spreads further inside than the film 61, the adhesive 7 is visible from the outside, and the aesthetics is reduced.

[0036] Figure 3 The parting plate 8 shown in (b) is a C-shaped plate having a slit 81 in one direction, but may also be a ring-shaped plate connected to one another. Although not particularly limited, the parting plate 8 is made of resin.

[0037] The parting plate 8 has cutouts 82 to 86 (cutouts). The cutouts 82 and 83 are located on both sides of the crack 81. The cutouts 84 to 86 are respectively located at positions arranged at 90 degree intervals including the cutout 83. When viewed from above, the angle range of the cutouts 83 to 86 includes the position of the protrusion 52 (angle direction). The widths of the cutouts 83 to 86 in the angle direction (in the direction along the inner circumferential surface 5a) are larger than the width of the protrusion 52 in the angle direction. Furthermore, the volumes (capacities) cut out from the cylindrical parting plate 8 by the cutouts 83 to 86 are larger than the volumes of the protrusions 52.

[0038] The above-mentioned cutouts do not need to be intentionally added in accordance with the protrusion 52, and parts that are used or have been used for other purposes can be used. For example, the parting plate 8 is usually obtained by injection molding in which resin is flowed into a mold and hardened. At this time, the resin inflow path, that is, the surface of the gate including the cut-off mark can also be used as the cut-off parts 84, 86, etc. In addition, in the case where the parting plate 8 has a crack 81, during injection molding, sometimes the two sides of the crack 81 are connected into one by a connecting path (bridge member), so the surface having the cut-off mark of the bridge member and adjacent to the crack 81 (the position corresponding to the crack 81. The correspondence mentioned here shows the distance from the crack 81 determined by the manufacturing method of the parting plate 8, etc.) can also be used as the cut-off parts 82, 83. The shape of the gate and the bridge member can be appropriately determined as needed. In addition, the position of the cut-off parts 82 and 83 of the bridge member does not necessarily need to be in contact with the crack 81 but located on both sides. It can also be separated from the crack 81.

[0039] Figure 4 This is a diagram for explaining the state of the parting plate 8 as viewed from the side of the crack 81. The above-mentioned cut marks 87 may remain in the cut portions 82 and 83 located on both sides of the crack 81 after the bridge is cut. The cut marks 87 are not limited to protruding from the cut surfaces of the cut portions 82 and 83 or making the surface rough. In addition, the cross-sectional shape, size, etc. of the bridge may be arbitrary.

[0040] The positional relationship between the gate and the bridge is determined according to the direction of the desired crack 81, etc. Therefore, when the position of the cutout portion is inconsistent with the protrusion 52 or the number is insufficient, a separate cutout portion 85 may be formed.

[0041] Figure 5 Shown separately Figure 3 (a) is a cross-sectional view taken along section line AA and a cross-sectional view taken along section line BB.

[0042] Figure 5The cross-sectional view of the section line AA shown in (a) includes the protrusion 52 and the cut-out portion 84 having a cut-out mark at the position of the gate as described above. The portion (cut-out surface) corresponding to the cut-out portion 84 in the outer peripheral surface 8a of the parting plate 8 opposite to the inner peripheral surface 5a can be a plane (a straight line when viewed from above). Along with this, in the section including the cut-out portion 84, a gap corresponding to the height of the outer periphery of the parting plate 8 is generated between the inner side surface of the protrusion 51 and the outer peripheral surface 8a of the parting plate 8. The section including the cut-out portion 86 can also be of the same structure as the section including the cut-out portion 84. Furthermore, the section including the cut-out portion 82 corresponding to the mark of the bridge member can also be of the same structure as the section including the cut-out portion 84. That is, there is no need to distinguish between the mark of the gate and the mark of the bridge member. Since the angle difference between the cutout 83 and the cutout 82 is small, the parting plate 8 does not have the protrusion 52 in the direction corresponding to the cutout 83 , but may have the protrusion 52 in the direction corresponding to the cutout 83 .

[0043] Figure 5 The cross-sectional view along the section line BB shown in (b) has a protrusion 52 and a cutout portion 85 having no cutout trace of the gate as described above. The cutout portion 85 is not particularly limited, and has a cross-sectional shape different from that of the cutout portion 84. Here, the parting plate 8 is not completely cut in the vertical direction, but only a portion near the upper surface is cut. Even in such a shape, the cutout has a volume that can completely receive the adhesive 7 extending in the center direction along the lower surface of the windshield 6.

[0044] Thus, the gap in the part of the opposing portion where the inner side surface of the protrusion 51 faces the parting plate 8 and is in a partial region along the lower surface of the windshield 6 and in the top view range (angle direction) including the protrusion 52 is wider than the gap in the portion other than the partial region due to the cutouts 82 to 86. By providing such a large gap portion in the angle range where the gap between the inner peripheral surface 5a and the windshield 6 is narrow by the protrusion 52, the adhesive 7 squeezed out from the narrow gap and especially spread in the center direction of the windshield 6 stays in the gap, and the adhesive 7 is prevented from spreading further in the center direction. Thus, it is possible to prevent the adhesive 7 from spreading to the inner side of the film 61 and being observed from the outside.

[0045] [Modifications]

[0046] Figure 6 It is a cross-sectional view showing a modification of the timepiece 1 according to the present embodiment.

[0047] The section includes Figure 5 For the protrusion 52 having the same cross section as shown in (b), the same parts are denoted by the same reference numerals and their description is omitted.

[0048] In this modified example, the parting plate 8 does not have a cutout portion in the same cross section as the protrusion 52, but instead has a cutout portion 511 in which the protrusion width is narrower in a portion than in a portion other than the portion (other portion) in the protrusion 51 of the housing 5. Since the gap between the parting plate 8 and the protrusion 51 only needs to be partially enlarged along the windshield 6, the cutout portion that becomes the gap may be in either the parting plate 8 or the protrusion 51.

[0049] Here, the cutout portion 511 is located only in a portion further inside than the inner edge 51b of the groove 51a, but the edge 51b may be narrowed or the edge 51b may be partially absent.

[0050] In summary, the timepiece 1 of the present embodiment includes: a case 5, one end (first end) of the upper side of which is open; a windshield 6, which is located at the first end and is a member that transmits light; a parting plate 8, which is a functional component located inside the case 5; and an adhesive 7 that joins the case 5 and the windshield 6. The case 5 includes: a protrusion 51, which protrudes inward from the inner peripheral surface 5a of the case 5 and extends in the circumferential direction; and a plurality of protrusions 52, which are provided to protrude inward from the inner peripheral surface 5a and define the position of the windshield 6 relative to the inner peripheral surface 5a. In the windshield 6, the side surface of the windshield 6 is joined to the inner peripheral surface 5a via the adhesive 7, and the peripheral edge of the lower surface is joined to the upper surface of the protrusion 51 via the adhesive 7, and in the parting plate 8, the outer peripheral surface 8a of the parting plate 8 extends along the inner side surface of the protrusion 51. There is a gap between the protrusion 51 and the parting plate 8 facing each other along the windshield 6, wherein the gap in a portion including the position of the protrusion 52, i.e., the region where the cutouts 83 to 86 are formed, is wider than the gap in the portion other than the region of the cutouts 83 to 86.

[0051] By providing a gap in accordance with the protrusion 52 in this manner, the windshield 6 can be reliably positioned in the timepiece 1 , and the adhesive 7 can be prevented from overflowing to an unnecessary position, thereby preventing a decrease in the appearance.

[0052] Furthermore, a portion of the gaps of the cutouts 83 to 86 is formed by the parting plate 8. Since the extent to which the adhesive 7 extends to the inner side of the film 61 depends on the position and shape of the parting plate 8 (functional component), by adjusting the gap on one side of the parting plate 8, the number of patterns of the shape of the housing 5 corresponding to the product can be reduced.

[0053] Furthermore, the width of the cutouts 82 to 86 in the direction along the inner circumferential surface 5a is wider than the width of the protrusion 52 in the direction along the inner circumferential surface 5a. Thus, during bonding, the adhesive 7 is guided to spread more easily in the circumferential direction, and the thickness of the cutouts 82 to 86 is kept small, so that the influence on the size of the display screen of the timepiece 1 can be minimized.

[0054] Furthermore, the volume of each of the cutout portions 83 to 86 is larger than the volume of the corresponding protrusion 52. Thus, even if all the adhesive 7 squeezed out by the protrusion 52 flows into the cutout portions 83 to 86, it will not overflow, and thus the expansion of the adhesive 7 to the inside of the film 61 can be more reliably suppressed.

[0055] Furthermore, the surfaces of the cutouts 83 to 86 of the parting plate 8 are made of resin, and at least a portion of the surfaces of the cutouts 83 to 86 has a cut mark 87. That is, the entire cutouts 83 to 86 do not need to be formed for storing the adhesive 7. The cutouts generated in the use of gates, bridges, etc., and the portions after the gates and bridges are cut out, can be used efficiently as a storage place for the adhesive 7.

[0056] Furthermore, the parting plate 8 may have a crack 81 in the direction along the side surface (inner surface) of the front end side thereof, and may have cutouts 82 and 83 at positions corresponding to the crack 81, for example, adjacent to the cutouts 82 and 83. That is, the parting plate 8 may not necessarily be annular, depending on the function of the parting plate 8, the positional balance with other components, etc. Furthermore, the position of the crack 81 itself may correspond to the position of the protrusion 52, but when other components are located at the position of the crack 81, the positions of the cutouts 82 and 83 adjacent to the crack 81, mainly the position where the bridge member is cut, can be utilized.

[0057] Furthermore, the windshield 6 has a film 61 in an annular shape on the joint surface with the upper surface of the protruding portion 51, and the film 61 is joined to the upper surface of the protruding portion 51 by the adhesive 7. In this way, by joining the film 61 with the adhesive 7, the adhesive 7 does not directly adhere to the lower surface of the windshield 6, so the adhesive 7 does not interfere with the display surface displayed by the pointer 2 and the like through the windshield 6. In addition, since the adhesive 7 can be hidden by the film 61, the aesthetics can be improved.

[0058] In particular, when the adhesive 7 is colored so as to be easily visible from the upper surface, the adhesive 7 is not spread to the inner side of the film 61, and a decrease in the appearance can be appropriately suppressed.

[0059] The protrusion 52 is located between the protrusion 51 and the first end. Thus, the windshield 6 can be stably supported, and the adhesive 7 squeezed out from the area between the inner peripheral surface 5a and the windshield 6 can appropriately flow into the gap between the protrusion 51 and the outer peripheral surface 8a and stay there.

[0060] Furthermore, the watch case of the present embodiment includes a case 5 whose first end (upper end) is open. The case 5 includes a protrusion 51 that protrudes inward from the inner peripheral surface 5a of the case 5 and extends in the circumferential direction, and a windshield 6 covering the first end is arranged on the upper surface; and a plurality of protrusions 52 that protrude inward from the inner peripheral surface 5a and define the position of the windshield 6 relative to the inner peripheral surface 5a. A portion (notch portion 511) of the protrusion 51 that is located along the windshield 6 and that faces the windshield 6 is narrower than portions other than the protrusion 51.

[0061] In this way, the housing 5 may have a cutout 511 on one side, thereby preventing the adhesive 7 from spreading inward along the lower surface of the windshield 6 when the windshield 6 is bonded with the adhesive 7. This prevents the adhesive 7 from being visible from the upper side through the windshield 6, thereby preventing a reduction in aesthetics.

[0062] In addition, the present invention is not limited to the above-mentioned embodiment, and various modifications are possible. For example, in the above-mentioned embodiment, the case where the protrusions 52 correspond to the cutouts 83 to 86 one-to-one is described, but in the case where there is a portion where the intervals between the protrusions 52 are narrow, a plurality of protrusions 52 may be included in one cutout. In this case, the cutout preferably has a volume larger than the sum of the volumes of the plurality of protrusions 52.

[0063] Furthermore, in the above-mentioned embodiment, the cutouts 82 to 86 which are traces of cutting off the gate, bridge, etc. from the resin parting plate 8 are described as gaps in the ink reservoir, but all the gaps may be gaps obtained by specially provided cutouts. In particular, in the case of a functional member such as the parting plate 8 which is not made of resin but of metal, such cutting traces will not be produced, and therefore all of them may be separately provided for exclusive use.

[0064] Furthermore, the number and intervals of the cutouts 82 to 86 can be arbitrarily determined within a range that can define the position of the windshield 6. Furthermore, the shapes and sizes of the cutouts 82 to 86 may be different.

[0065] Furthermore, the cutout surfaces of the cutout portions 82 to 86 may not be flat in a plan view, but may be concave or convex curved surfaces.

[0066] Furthermore, since not all of the adhesive 7 squeezed out from the protrusion 52 flows into the cutouts 82 to 86, the volume of each of the cutouts 82 to 86 does not necessarily have to be larger than the volume of the protrusion 52. On the contrary, if the required volume is obtained, the cutouts may have a circumferential width narrower than the width of the protrusion 52.

[0067] Furthermore, the color of the adhesive 7 is not particularly limited, and may be colorless and transparent. Furthermore, the surface of the film 61 that is bonded to the windshield 6 may have an appropriate color depending on the design of the film 61 so that it can be viewed from the upper side. Furthermore, the adhesive 7 does not necessarily have to be thermosetting, and does not need to expand during thermal curing.

[0068] Furthermore, in the above-mentioned embodiment, the structure of the clock displayed by the pointer 2 is described, but it can also be a clock with a digital display screen. Furthermore, the clock 1 is not limited to an electronic clock. It can also be a mechanical clock using a spring, etc. Furthermore, the clock 1 is not necessarily a product dedicated to the time display. It can have basic functions such as a stopwatch and an alarm clock, or it can be a multifunctional product (including a smart watch) that can measure and display temperature, direction, altitude, weather changes, usage conditions, user activity conditions, pulse, SpO2, etc. by having physical sensors such as air pressure, geomagnetic field, temperature, acceleration, optical parameters, etc. Furthermore, it is also possible for the communication unit to obtain a variety of information from the outside and be able to display, notify actions, etc. Furthermore, the clock 1 is not limited to a watch worn on the wrist. It can also be a clock worn on other parts of the body, a pocket watch that is put into a pocket, etc. and moved, etc.

[0069] Furthermore, the outer shape of the opening end of the housing 5 and the windshield 6 may not be circular. They may be elliptical, or may be polygonal with rounded corners or cut-off shapes. Furthermore, the outer shape of the windshield 6 and the outer shape of the parting plate 8 may be different shapes. In particular, in the case of a clock 1 having a digital display screen, the parting plate 8 may be in a shape corresponding to the digital display screen.

[0070] In the above embodiment, the parting plate 8 is used as an example of a functional component, but the present invention is not limited thereto. When the dial 3 directly contacts the protrusion 51 of the case 5, the dial 3 may be a functional component or a component used for other purposes.

[0071] In addition, the specific configuration, content of processing operations, operation sequence, etc. shown in the above-mentioned embodiments can be appropriately changed within the scope not departing from the gist of the present invention.

[0072] Although several embodiments of the present invention have been described, the scope of the present invention is not limited to the above-described embodiments but includes the scope of the invention described in the claims and the scope of equivalents thereof.

Claims

1. A timepiece, characterized in that: have: a housing having an open first end; a component located at said first end; and an adhesive for joining the housing to the component, The housing has: a protrusion extending in a circumferential direction from the inner circumferential surface of the housing so as to protrude inward; as well as a protrusion which is provided to protrude inward from the inner peripheral surface, In the above-mentioned component, at least one of the side surface of the component and the inner peripheral surface, and the peripheral edge of the lower surface of the component and the upper surface of the protrusion is bonded via the above-mentioned adhesive. There is a gap between the protruding portion and the opposing portion of the component. A volume of the gap in a partial region of the facing portion including a position of the protrusion is larger than a volume of the gap in a portion other than the partial region of the facing portion.

2. The timepiece according to claim 1, characterized in that The volume of each of the gaps is larger than the volume of the corresponding protrusion.

3. The timepiece according to claim 1, characterized in that The member includes a film layer along a bonding surface with the upper surface of the protrusion, and the adhesive bonds the film layer and the upper surface of the protrusion.

4. The timepiece according to claim 1, characterized in that The above adhesive is colored.

5. The timepiece according to claim 1, characterized in that The protrusion is located between the projection and the first end.

6. The timepiece according to claim 1, characterized in that The number of the protrusions is two or more.

7. The timepiece according to claim 1, characterized in that The lower end of the side surface of the component has a chamfered portion.

8. A watch casing, characterized in that: A housing having an open first end, The housing has: a protrusion that protrudes inward from the inner peripheral surface of the housing and extends in the circumferential direction, and a member that covers the first end is disposed on the upper surface; and A plurality of protrusions are provided protruding inward from the inner peripheral surface, In a state where the above-mentioned component is arranged, there is a gap between the above-mentioned protrusion and the opposing portion of the above-mentioned component. A volume of the gap in a partial region of the facing portion including a position of the protrusion is larger than a volume of the gap in a portion other than the partial region of the facing portion.

9. A method for manufacturing a watch, characterized in that: The method comprises a first step of bonding at least one of a side surface of a component and a protrusion extending inwardly from an inner peripheral surface of a shell and a peripheral edge of a lower surface of the component and an upper surface of the protrusion via an adhesive, and arranging the component at an open first end of the shell, The housing is formed with a protrusion protruding inward from the inner peripheral surface. There is a gap between the protruding portion and the opposing portion of the component. The volume of the gap in a partial region of the facing portion including the position of the protrusion is formed to be larger than the volume of the gap in a portion other than the partial region of the facing portion.

10. The method for manufacturing a timepiece according to claim 9, characterized in that: The position of the member relative to the inner peripheral surface is defined by the protrusion.

11. The method for manufacturing a timepiece according to claim 9, characterized in that: A functional component is provided inside the housing. The gap in the partial region is formed at the opposing portions of the functional component and the protrusion along the component.

12. The method for manufacturing a timepiece according to claim 11, characterized in that: The gap in the partial region is formed by a cutout of the functional component.

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