JP7665992B2 - watch - Google Patents

Description

The present invention relates to a wristwatch .

For example, in the case of a wristwatch, which is an accessory, a structure is known in which a mounting recess is provided in the wristwatch case, and multiple decorative members made of brittle materials such as jewels are arranged in a planar fashion and fitted into the mounting recess, as described in Patent Document 1.

JP 2005-323735 A

This type of watch has the problem that it lacks decorativeness because multiple decorative elements are simply arranged in a two-dimensional fashion and fitted into the mounting recesses of the watch case, meaning that only two-dimensional decorative expression is possible.

The problem to be solved by this invention is to provide a wristwatch equipped with a highly decorative ornament .

This invention is a wristwatch comprising a ring-shaped decorative body made up of multiple laminated, light-transmitting decorative members, and a wristwatch case to which the ring -shaped decorative body is attached, wherein the decorative body comprises a ring-shaped holding member having a fixing portion to which the decorative members are fixed, the wristwatch case is separate from the ring-shaped holding member and has an attachment portion to which the ring-shaped holding member is attached, and each of the laminated decorative members is fixed by the fixing portion of the holding member .

This invention makes it possible to provide products that are highly decorative.

FIG. 1 is an enlarged perspective view of a wristwatch to which the present invention is applied. 2 is an enlarged cross-sectional view of the wristwatch shown in FIG. 1 taken along the line AA. FIG. 3 is an enlarged cross-sectional view showing a main part of the watch case shown in FIG. 2. FIG. 4 is an enlarged cross-sectional view of the essential parts, showing an exploded view of how a decorative object is attached to the watch case shown in FIG. 3. 5 is an enlarged cross-sectional view of the essential parts, showing in exploded view the state in which multiple decorative members are stacked and fitted into the holding member of the decorative body shown in FIG. 4. FIG. 6A and 6B show a holding member for the decorative body shown in FIG. 5, in which FIG. 6A is an enlarged perspective view thereof, and FIG. 6B is an enlarged developed view thereof. 1 is an enlarged cross-sectional view of a main portion showing a modified example of a decorative element in a wristwatch to which the present invention is applied.

An embodiment of a wristwatch to which the present invention is applied will now be described with reference to FIGS.
This wristwatch is an accessory worn on the wrist, and as shown in Figures 1 and 2, it has a wristwatch case 1 which is the accessory body. This wristwatch case 1 has a structure in which an upper case 1b is attached onto a lower case 1a via a waterproof ring 1c.

As shown in Figures 1 and 2, the 12 o'clock and 6 o'clock sides of the lower case 1a of the watch case 1 are provided with band attachment sections 2 to which a watch band (not shown) is attached. The 2 o'clock, 3 o'clock, 4 o'clock, 8 o'clock, and 10 o'clock sides (the 8 o'clock and 10 o'clock sides are not shown) of the lower case 1a of the watch case 1 are provided with switch sections 3.

As shown in Figures 1 and 2, a watch crystal 4 is attached to the upper opening of the watch case 1, i.e., the upper opening of the upper case 1b, via a packing 4a. A back cover (not shown) is attached to the lower part of the watch case 1. A watch module (not shown) is provided inside the watch case 1.

As shown in Figures 1 to 3, the upper part of the watch case 1, i.e., the upper part of the upper case 1b, has a mounting recess 6, which is an attachment part for attaching the decorative body 5, formed in a ring shape along the outer circumference of the watch case 1. In this case, the top surface of the upper case 1b of the watch case 1 is formed into a gently sloping surface that gradually becomes lower from the inner circumference side toward the outer circumference side. For this reason, the mounting recess 6 has a cross-sectional shape that is approximately square, and is formed slightly deeper on the inner circumference side of the watch case 1 than on the outer circumference side.

As shown in Figures 3 to 6, the decorative body 5 comprises a number of decorative members 7 made of a light-transmitting brittle material, and a holding member 8 into which the decorative members 7 are stacked and fitted. The holding member 8 is a thin metal plate 9 (see Figure 6(b)) made of stainless steel, titanium alloy, aluminum alloy, or the like, for example a metal plate 9 with a thickness of about 0.1 mm, and is formed into a ring shape as a whole.

That is, as shown in Figures 4 to 6, the retaining member 8 is formed by bending and raising the inner and outer periphery of a ring-shaped metal plate 9, forming a fitting recess 10 (fixing portion) with a concave cross-sectional shape. The fitting recess 10 is formed by the bottom 8a of the retaining member 8, the rising portion 8b on the inner periphery of the retaining member 8, and the rising portion 8c on the outer periphery of the retaining member 8, and is open upward.

In this case, as shown in Figures 6(a) and 6(b), the inner peripheral rising portion 8b and the outer peripheral rising portion 8c of the retaining member 8 have a plurality of notches 8d at predetermined intervals along the circumferential direction to facilitate bending the inner peripheral portion and the outer peripheral portion of the metal plate 9. This retaining member 8 is formed so that the distance between the outer surface of the inner peripheral rising portion 8b and the outer surface of the outer peripheral rising portion 8c, i.e., the radial length perpendicular to the circumferential direction of the bottom portion 8a, is the same as the radial length perpendicular to the circumferential direction of the mounting recess 6 of the watch case 1.

As shown in Figures 3 to 5, the retaining member 8 is formed so that the rising portion 8b on the inner circumference is slightly higher than the rising portion 8c on the outer circumference. In other words, the retaining member 8 is formed so that the height of the rising portion 8b on the inner circumference is slightly lower than the height of the inner circumferential surface of the mounting recess 6 located on the inner circumference side of the watch case 1, and the height of the rising portion 8c on the outer circumference is the same as or slightly lower than the height of the inner circumferential surface of the mounting recess 6 located on the outer circumference side of the watch case 1.

As a result, when the retaining member 8 is fitted from above into the mounting recess 6 of the watch case 1 as shown in FIG. 3, the bottom portion 8a is in close contact with the bottom surface of the mounting recess 6 of the watch case 1, the inner rising portion 8b approaches the inner surface of the mounting recess 6 located on the inner side of the watch case 1 at a slightly lower height, and the outer rising portion 8c approaches the inner surface of the mounting recess 6 located on the outer side of the watch case 1 at the same height or a slightly lower height.

In this case, the retaining member 8 is configured to be adhered and fixed in the mounting recess 6 of the watch case 1 with adhesive 11, as shown in Figures 3 and 4. That is, this adhesive 11 is applied to a slightly thicker thickness on the bottom of the mounting recess 6 of the watch case 1, and when the retaining member 8 is attached to the mounting recess 6, the adhesive 11 flows from the underside of the bottom 8a of the retaining member 8 around to the outer surfaces of the rising portion 8b on the inner periphery of the retaining member 8 and the rising portion 8c on the outer periphery of the retaining member 8, adhering and fixing the retaining member 8 in the mounting recess 6.

For this reason, an adhesive reservoir 6a is provided below the vertical middle portion of the inner circumferential surface of the mounting recess 6, as shown in Figures 3 and 4, for storing adhesive 11 that has flowed from the underside of the bottom 8a of the retaining member 8 to the outer surfaces of the rising portion 8b on the inner circumferential side of the retaining member 8 and the rising portion 8c on the outer circumferential side of the retaining member 8.

As a result, as shown in Figures 3 and 4, when the holding member 8 is mounted in the mounting recess 6 and the adhesive 11 flows from the underside of the bottom 8a of the holding member 8 to the outer surfaces of the rising portion 8b on the inner periphery of the holding member 8 and the rising portion 8c on the outer periphery of the holding member 8, the adhesive 11 accumulates in the adhesive reservoir 6a of the mounting recess 6 and does not leak out to the upper side of the mounting recess 6.

As shown in Figs. 3 to 5, a colored layer 10a for coloring the multiple decorative members 7 is provided on the inner surface of the fitting recess 10 of the holding member 8. That is, the colored layer 10a may be provided on the entire bottom surface and both side surfaces of the fitting recess 10, or may be provided on a portion of the bottom surface and both side surfaces of the fitting recess 10. Although not shown, the colored layer 10a may be one of seven colors, such as red, orange, yellow, green, blue, indigo, and purple, or one of twelve colors, or may be partially different colors.

For example, although not shown, this colored layer 10a may be a different color in the left-right direction on the inner surface of the fitting recess 10, with the line connecting 12 o'clock and 6 o'clock as the boundary, or a different color in the up-down direction on the line connecting 3 o'clock and 9 o'clock as the boundary, or the inner surface of the fitting recess 10 may be divided into multiple parts, and these divided parts may be a different color. In this case, the colored layer 10a may be a different color in the parts corresponding to the hour characters representing 1 o'clock to 12 o'clock and the other parts, for example, or each hour character may be a different color.

On the other hand, the multiple decorative members 7 are formed of brittle materials such as gemstones such as sapphire, emerald, ruby, diamond, glass such as highly transparent quartz glass, or ceramics, which are transparent or translucent light-transmitting brittle materials, as shown in Figures 3 to 5. Each of the multiple decorative members 7 is formed in a substantially flat ring shape having the same size as the fitting recess 10 of the holding member 8. In this case, in this embodiment, two layers of the multiple decorative members 7 are stacked, but three or more layers may be stacked.

As shown in Figures 3 to 5, a decorative layer 7a is provided on each of the front (upper) and back (lower) surfaces of the multiple decorative members 7. These decorative layers 7a are faceted layers such as cut glass, or thin film layers such as printed or vapor-deposited layers with optical transparency, such as patterns or figures. As a result, when the multiple decorative members 7 are stacked, each decorative layer 7a can be seen from above, resulting in a three-dimensional decorative expression. In this case, the decorative layer 7a may be provided on all of the upper and lower surfaces of each of the multiple decorative members 7, or may be provided partially on either the upper or lower surface of each of the multiple decorative members 7.

As shown in Figures 3 to 5, each of the multiple decorative members 7 has chamfered portions 7b at each corner of the top and bottom surfaces. In this case, of the multiple decorative members 7, the topmost decorative member 7 has an upper surface that is formed into a gently sloping surface that gradually becomes lower from the inner circumference side to the outer circumference side, similar to the upper surface of the watch case 1. As a result, the multiple decorative members 7 are formed so that when they are stacked one on top of the other, the height of the inner circumference side is higher than the height of the outer circumference side.

When the multiple decorative members 7 are stacked one on top of the other as shown in Figures 3 and 4, the decorative layers 7a on the top and bottom surfaces are aligned and temporarily fixed with a transparent or translucent adhesive (not shown). Therefore, when the multiple decorative members 7 are stacked one on top of the other and fitted into the fitting recess 10 of the holding member 8, the top surface of the topmost decorative member 7 is inclined, and the portion of the topmost decorative member 7 that corresponds to the chamfered portion 7b on the top surface protrudes above the fitting recess 10.

In other words, as shown in Figures 3 and 4, when the multiple decorative members 7 are stacked and fitted into the fitting recess 10 of the holding member 8, the upper end portion corresponding to the chamfered portion 7b on the inner periphery of the upper surface of the top decorative member 7 is arranged to protrude above the rising portion 8b on the inner periphery side of the fitting recess 10.

Similarly, as shown in Figures 3 and 4, when multiple decorative members 7 are stacked and fitted into the fitting recess 10 of the holding member 8, the upper end portion that roughly corresponds to the chamfered portion 7b on the outer periphery of the upper surface of the top decorative member 7 is arranged to protrude above the rising portion 8c on the outer periphery side of the fitting recess 10.

As a result, as shown in Figures 2 and 3, the decorative body 5 is configured so that when the retaining member 8 is attached within the mounting recess 6 of the watch case 1, the upper surface of the uppermost decorative member 7 that protrudes above the fitting recess 10 of the retaining member 8 is positioned at an angle and approximately flush with the upper surface of the watch case 1. In other words, this decorative body 5 is configured so that even if the height of the retaining member 8 is slightly lower than the depth of the mounting recess 6 of the watch case 1, the upper surface of the uppermost decorative member 7 is positioned approximately flush with the upper surface of the watch case 1.

As shown in Figures 3 to 5, when multiple decorative members 7 are stacked and fitted into the fitting recess 10 of the holding member 8, they are configured to be fixed in the fitting recess 10 by the fixing portion 12, which is a member fixing portion. That is, this fixing portion 12 is provided with a locking protrusion 12a that is provided on the rising portion 8c on the outer periphery of the holding member 8, which is the inner surface of the fitting recess 10, and protrudes toward the inside of the fitting recess 10, and an engaging recess 12b that is provided along the circumferential direction on the outer periphery of the uppermost decorative member 7 and engages with the locking protrusion 12a of the fitting recess 10.

As a result, as shown in Figures 3 to 5, when multiple decorative members 7 are fitted in a stacked state into the fitting recess 10 of the holding member 8, the fixing portion 12 is configured so that the locking protrusion 12a protruding into the fitting recess 10 engages with the engagement recess 12b provided on the outer circumferential surface of the uppermost decorative member 7, thereby fixing the multiple decorative members 7 in a stacked state within the fitting recess 10.

As shown in Figures 3 to 5, the multiple decorative members 7 are stacked and fitted into the fitting recesses 10 of the holding member 8, and are also configured to be fixed into the fitting recesses 10 by ultraviolet-curing resin 13, which is a photocurable resin, as an adhesive. In other words, this ultraviolet-curing resin 13 has light-transmitting properties such as transparency or translucency, hardens when exposed to ultraviolet light, and is applied to almost the entire inner surface of the fitting recesses 10 of the holding member 8.

As a result, as shown in Figures 3 to 5, when multiple decorative members 7 are stacked and fitted into the fitting recess 10 of the holding member 8, and ultraviolet light is irradiated from above the topmost decorative member 7, the irradiated ultraviolet light passes through the multiple decorative members 7 and is irradiated onto the ultraviolet-cured resin 13, hardening the ultraviolet-cured resin 13, fixing the multiple stacked decorative members 7 within the fitting recess 10 and preventing misalignment due to circumferential rattling of the multiple decorative members 7.

Next, a method for manufacturing such a wristwatch will be described.
The manufacturing method for this wristwatch includes a first step of forming a retaining member 8 by bending a metal plate 9 to form an attachment recess 10, a second step of forming a decorative body 5 by stacking, fitting and fixing a plurality of decorative members 7 into the attachment recess 10 of the retaining member 8, and a third step of attaching the decorative body 5 to the mounting recess 6 of the wristwatch case 1.

That is, in the first step, as shown in Figures 6(a) and 6(b), the locking protrusions 12a (see Figure 5) of the fixing part 12 are formed in advance by pressing at locations corresponding to the outer peripheral rising part 8c located on the outer peripheral side of the bottom part 8a of the ring-shaped metal plate 9. At the same time, a plurality of notches 8d are provided at predetermined intervals along the circumferential direction at locations corresponding to the inner peripheral rising part 8b and the outer peripheral rising part 8c located on the inner peripheral side and outer peripheral side of the bottom part 8a of the metal plate 9.

As shown in Figures 5 and 6, the inner and outer periphery of the metal plate 9 are raised by a bending process such as press working, thereby forming rising portions 8b, 8c on the inner and outer periphery of the metal plate 9 at a location corresponding to the bottom 8a. At this time, the rising portion 8b on the inner periphery and the rising portion 8c on the outer periphery of the metal plate 9 can be easily and satisfactorily bent by a plurality of notches 8d provided at locations corresponding to the rising portion 8b on the inner periphery and the rising portion 8c on the outer periphery of the metal plate 9.

In this way, in the first step, a retaining member 8 is formed in which a fitting recess 10 that is open upward is formed by the bottom 8a of the metal plate 9, the rising portion 8b on the inner periphery of the metal plate 9, and the rising portion 8c on the outer periphery of the metal plate 9. At this time, a locking protrusion 12a is provided on the rising portion 8c on the outer periphery of the retaining member 8, which is the inner surface of the fitting recess 10, protruding toward the inside of the fitting recess 10.

In this first step, a colored layer 10a for coloring the multiple decorative members 7 is provided on the inner surface of the fitting recess 10 of the holding member 8. This colored layer 10a may be provided on the entire bottom surface and both side surfaces of the fitting recess 10, or may be provided on a portion of the bottom surface and both side surfaces of the fitting recess 10. In this case, the colored layer 10a may be a single color, or may be partially different colors.

For example, the colored layer 10a may be a different color in the left-right direction on the inner surface of the fitting recess 10, with the line connecting 12 o'clock and 6 o'clock as the boundary, or a different color in the up-down direction on the line connecting 3 o'clock and 9 o'clock as the boundary, or the inner surface of the fitting recess 10 may be divided into multiple parts, and these divided parts may be a different color. In this case, the colored layer 10a may be a different color in the parts corresponding to the hour characters representing 1 o'clock to 12 o'clock and the other parts, for example, or each hour character may be a different color.

In the second step, when fitting the multiple decorative members 7 into the fitting recesses 10 of the holding member 8, an engagement recess 12b is formed in advance on the outer peripheral surface of the uppermost decorative member 7, and the multiple decorative members 7 are stacked. At this time, the decorative layers 7a provided on the top and bottom surfaces of the multiple decorative members 7 are aligned, and the multiple decorative members 7 are stacked so that the decorative patterns and decorative figures provided by the decorative layers 7a are expressed three-dimensionally. In this state, the multiple stacked decorative members 7 are temporarily fixed by bonding them with a light-transmitting adhesive (not shown), such as a transparent or translucent adhesive.

When fitting the multiple stacked decorative members 7 into the fitting recesses 10 of the holding member 8, a UV-curable resin 13, which is a light-curable resin with optical transparency, is applied to almost the entire inner surface of the fitting recesses 10 in advance. In this state, the multiple stacked decorative members 7 are fitted into the fitting recesses 10 of the holding member 8. Then, the locking protrusions 12a on the rising portion 8c on the outer periphery of the holding member 8 engage with the engagement recesses 12b on the outer periphery of the topmost decorative member 7 of the multiple stacked decorative members 7, and the multiple stacked decorative members 7 are fixed in the fitting recesses 10 of the holding member 8.

At this time, the UV-curable resin 13 applied to almost the entire inner surface of the fitting recess 10 is not hardened and has fluidity, so when the stacked decorative members 7 are fitted into the fitting recess 10 of the holding member 8, they are smoothly and satisfactorily fitted into the fitting recess 10 of the holding member 8 without being affected by the UV-curable resin 13.

In this state, when ultraviolet light is applied from above the topmost decorative member 7, the irradiated ultraviolet light passes through the stacked decorative members 7 and is applied to the ultraviolet-curable resin 13 applied to the inner surface of the fitting recess 10. The ultraviolet light then hardens the ultraviolet-curable resin 13, and the stacked decorative members 7 are fixed in place in the fitting recess 10 of the holding member 8 by the hardened ultraviolet-curable resin 13, preventing misalignment due to circumferential wobble of the decorative members 7. This forms the decorative body 5.

In the third step, the decorative body 5 is attached and fixed in the mounting recess 6 of the watch case 1. At this time, as shown in FIG. 4, a thick layer of adhesive 11 is applied to the bottom side of the inner surface of the mounting recess 6 of the watch case 1, and in this state, the holding member 8 of the decorative body 5 is fitted into the mounting recess 6 of the watch case 1. Then, the adhesive 11 flows from the underside of the bottom 8a of the holding member 8 to the outer surfaces of the rising portion 8b on the inner periphery of the holding member 8 and the rising portion 8c on the outer periphery of the holding member 8.

As shown in FIG. 3, this adhesive 11 that has flowed around accumulates in an adhesive reservoir 6a that is provided at a location below the vertical middle part on the inner circumferential surface of the mounting recess 6. As a result, the holding member 8 is mounted in the mounting recess 6 and fixed by the adhesive 11. At this time, even if the adhesive 11 flows from the underside of the bottom 8a of the holding member 8 to the outer surfaces of the rising portion 8b on the inner circumferential side of the holding member 8 and the rising portion 8c on the outer circumferential side of the holding member 8, the adhesive 11 does not leak out to the upper side of the mounting recess 6 because it accumulates in the adhesive reservoir 6a of the mounting recess 6.

Next, the function of such a wristwatch ornament 5 will be described.
In this decorative body 5, a plurality of decorative members 7 made of a light-transmitting brittle material are stacked and arranged in the fitting recess 10 of the holding member 8, so that the decorative layers 7a provided on the upper and lower surfaces of the plurality of decorative members 7 can be seen from above, providing a three-dimensional decorative expression. This enhances the decorativeness.

In this case, the colored layer 10a is provided on the inner surface of the fitting recess 10 of the holding member 8, and the multiple decorative members 7 stacked in the fitting recess 10 of the holding member 8 are colored by this colored layer 10a. This also enhances the decorativeness. In this case, the colored layer 10a may be provided in a single color on almost the entire inner surface of the fitting recess 10, and the multiple decorative members 7 may be colored in a single color, or the colored layer 10a may be provided in different colors partially on the inner surface of the fitting recess 10, and the multiple decorative members 7 may be colored in different colors partially.

For example, the colored layer 10a may be colored differently in the left-right direction on the inner surface of the fitting recess 10, with the line connecting 12 o'clock and 6 o'clock as the boundary, so that the multiple decorative members 7 are colored differently in the left-right direction, or the colored layer 10a may be colored differently in the up-down direction, with the line connecting 3 o'clock and 9 o'clock as the boundary, so that the multiple decorative members 7 are colored differently in the up-down direction. Also, the colored layer 10a may be formed by dividing the inner surface of the fitting recess 10 into multiple parts, and these divided parts may be colored differently, so that the multiple decorative members 7 are colored partially in different colors. These methods also enhance the decorativeness.

In this way, the decorative body 5 of this wristwatch comprises a decorative member 7 formed from a brittle material with optical transparency, and a retaining member 8 having a fitting recess 10 into which the decorative member 7 is fitted and fixed, and the decorative member 7 is layered in multiple layers within the fitting recess 10 of the retaining member 8, providing a highly decorative piece.

In other words, in the decorative body 5 of this wristwatch, the multiple decorative members 7 are formed from a brittle material that is optically transparent, so even if multiple decorative members 7 are stacked, these stacked multiple decorative members 7 can be seen through, which allows for a three-dimensional decorative expression to be created by the stacked multiple decorative members 7, providing a highly decorative piece.

In this case, in the decorative body 5 of this wristwatch, a decorative layer 7a is provided on the front and back surfaces (top and bottom surfaces) of the multiple decorative members 7, allowing for a different decorative expression for each stacked decorative member 7, while also allowing for a three-dimensional decorative expression to be achieved by the entire stack of multiple decorative members 7. This allows for a three-dimensional decorative expression to be achieved by the multiple decorative layers 7a provided on the top and bottom surfaces of each of the multiple decorative members 7, providing an even more highly decorative product.

In addition, in the ornamental body 5 of this wristwatch, the fitting recess 10 of the retaining member 8 is formed by bending the metal plate 9, so that the thickness of the metal plate 9 can be reduced, and the thickness of the retaining member 8 can be made thin, and the fitting recess 10 can be easily manufactured. That is, the retaining member 8 has a plurality of notches 8d at predetermined intervals along the circumferential direction at locations corresponding to the rising portion 8b on the inner circumference side and the rising portion 8c on the outer circumference side of the ring-shaped metal plate 9, so that even if the retaining member 8 is ring-shaped, the rising portions 8b, 8c on the inner circumference side and the outer circumference side of the retaining member 8 can be easily formed by bending.

In addition, in the decorative body 5 of this wristwatch, the inner surface of the mounting recess 10 is colored with the colored layer 10a, so that the entirety of the multiple light-transmitting decorative members 7 can be colored, which also enhances the decorativeness. In this case, in this wristwatch, the colored layer 10a may be provided in a single color on almost the entire inner surface of the mounting recess 10, so that the multiple layered decorative members 7 are colored in a single color, or the inner surface of the mounting recess 10 may be partially provided in a different color, so that the multiple layered decorative members 7 are partially colored in different colors.

That is, in the decorative body 5 of this wristwatch, for example, the colored layer 10a may be colored differently in the left-right direction on the inner surface of the fitting recess 10, with the line connecting 12 o'clock and 6 o'clock as the boundary, so that the multiple stacked decorative members 7 are colored differently in the left-right direction, or the colored layer 10a may be colored differently in the up-down direction on the line connecting 3 o'clock and 9 o'clock as the boundary, so that the multiple stacked decorative members 7 are colored differently in the up-down direction. Also, the colored layer 10a may be formed by dividing the inner surface of the fitting recess 10 into multiple parts, and the multiple divided parts may be colored differently, so that the multiple stacked decorative members 7 are colored partially in different colors. These methods can also enhance the decorativeness.

In addition, the wristwatch ornament 5 is provided with a fixing portion 12 that fixes the multiple decorative members 7 within the fitting recesses 10 of the holding member 8, so that the multiple decorative members 7 can be securely and satisfactorily fixed in the fitting recesses 10 of the holding member 8 in a stacked state by the fixing portion 12.

In other words, in the decorative body 5 of this wristwatch, the fixing part 12 is provided with a locking protrusion 12a provided on the inner surface of the fitting recess 10, and an engagement recess 12b provided on the outer peripheral surface of the uppermost decorative member 7 of the multiple decorative members 7 with which the locking protrusion 12a engages. Therefore, when the multiple decorative members 7 are stacked and fitted into the fitting recess 10, the locking protrusion 12a of the fitting recess 10 can be engaged with the engagement recess 12b of the uppermost decorative member 7, so that the stacked multiple decorative members 7 can be easily and reliably fixed into the fitting recess 10 of the holding member 8.

Furthermore, in the ornamental body 5 of this wristwatch, multiple decorative members 7 are stacked and fixed in the fitting recess 10 of the holding member 8 by ultraviolet-curing resin 13, which is a photocurable resin. This allows the stacked multiple decorative members 7 to be fixed in the fitting recess 10 of the holding member 8 by this ultraviolet-curing resin 13, preventing misalignment due to circumferential wobble of the multiple decorative members 7. In this case, since the ultraviolet-curing resin 13 has a transparent or translucent light transmittance, the stacked multiple decorative members 7 can be colored through the ultraviolet-curing resin 13 even if a colored layer 10a is provided on the inner surface of the fitting recess 10.

The manufacturing method for the decorative body 5 in this wristwatch includes a first step of forming a retaining member 8 with a fitting recess 10 by bending a metal plate 9, and a second step of stacking and fitting and fixing a plurality of decorative members 7 made of a light-transmitting brittle material into the fitting recess 10 of the retaining member 8. This makes the structure of the retaining member 8 simple, allows the retaining member 8 to be easily manufactured, and allows the plurality of decorative members 7 to be easily and satisfactorily stacked and attached to the retaining member 8.

In this case, in the first step, a plurality of notches 8d are provided at predetermined intervals along the circumferential direction at locations corresponding to the inner peripheral side rising portion 8b and the outer peripheral side rising portion 8c located on the inner peripheral side and outer peripheral side of the bottom portion 8a of the ring-shaped metal plate 9, respectively, and in this state, the inner peripheral portion and the outer peripheral portion of the metal plate 9 are raised by a bending process such as a press process, so that the rising portions 8b, 8c can be easily and satisfactorily formed on the inner peripheral portion and the outer peripheral portion of the metal plate 9 at the location corresponding to the bottom portion 8a.

That is, at this time, even if the metal plate 9 is a ring-shaped flat plate, the inner peripheral side rising portion 8b and the outer peripheral side rising portion 8c of the ring-shaped metal plate 9 can be easily and satisfactorily bent by the multiple notches 8d provided at the locations corresponding to the inner peripheral side rising portion 8b and the outer peripheral side rising portion 8c located on the inner peripheral side and outer peripheral side of the bottom portion 8a of the metal plate 9. As a result, the fitting recess 10 that is open upward can be accurately and satisfactorily formed by the bottom portion 8a of the metal plate 9, the inner peripheral side rising portion 8b of the metal plate 9, and the outer peripheral side rising portion 8c of the metal plate 9.

In the second step, the decorative layers 7a on the front and back surfaces (top and bottom surfaces) of the multiple decorative members 7 are aligned, and the multiple decorative members 7 are stacked so that the decorative patterns and figures created by the decorative layers 7a are expressed three-dimensionally. In this state, the multiple decorative members 7 can be temporarily fixed by bonding them together with a transparent or translucent adhesive (not shown).

Therefore, in this second step, when the stacked decorative members 7 are fitted into the fitting recesses 10 of the holding member 8, the locking protrusions 12a of the fixing portion 12 provided on the rising portion 8c of the outer periphery of the holding member 8 can be engaged with the engaging recesses 12b of the fixing portion 12 provided on the outer periphery of the uppermost decorative member 7 among the stacked decorative members 7, so that the stacked decorative members 7 can be reliably and satisfactorily fixed in the fitting recesses 10 of the holding member 8.

In addition, in the manufacturing method of the decorative body 5 of this wristwatch, in the second step, after applying ultraviolet-curable resin 13, which is a light-curable resin with optical transparency, to the inner surface of the fitting recess 10, multiple decorative members 7 are stacked and fitted into the fitting recess 10, and in this state, ultraviolet light is irradiated onto the ultraviolet-curable resin 13 through the multiple decorative members 7 to harden the ultraviolet-curable resin 13. This hardened ultraviolet-curable resin 13 can fix the multiple decorative members 7 within the fitting recess 10, thereby preventing misalignment due to circumferential rattling of the multiple decorative members 7.

Furthermore, this watch is equipped with an ornamental body 5 in which multiple decorative members 7 are stacked and fitted into the fitting recess 10 of the retaining member 8, and a watch case 1 which is the main body of the accessory and has a mounting recess 6 which is an attachment portion to which the retaining member 8 of this ornamental body 5 is attached, so that the multiple stacked decorative members 7 can be easily and satisfactorily attached to the watch case 1 by the retaining member 8.

In the above embodiment, the fixing portion 12 that fixes the stacked decorative members 7 in the fitting recess 10 of the holding member 8 is described as having a locking protrusion 12a provided in the fitting recess 10 and an engaging recess 12b provided in the uppermost decorative member 7. However, the present invention is not limited to this, and may have a structure in which, for example, a locking recess is provided in the fitting recess 10 and an engaging protrusion is provided in the decorative member 7.

In the above embodiment, the stacked decorative members 7 are fixed in the fitting recesses 10 of the holding member 8 by the engagement between the locking protrusions 12a and the engagement recesses 12b of the fixing portion 12. However, the present invention is not limited to this. For example, the stacked decorative members 7 may be fixed in the fitting recesses 10 of the holding member 8 by a clamp portion 15, which is a member fixing portion, as shown in the modified example of FIG. 7.

That is, the clamp portion 15 of this modified example is a crimped portion provided at the upper end of the rising portion 8b on the outer periphery of the holding member 8, as shown in FIG. 7. This crimped portion, or clamp portion 15, may be configured to fix the multiple decorative members 7 in a stacked state in the fitting recess 10 of the holding member 8 by crimping the upper end of the rising portion 8b on the outer periphery of the holding member 8 when the multiple decorative members 7 are stacked and fitted into the fitting recess 10 of the holding member 8.

The clamping portion 15 of this modified example is a leaf spring portion provided at the upper end of the rising portion 8b on the outer periphery of the holding member 8, as shown in FIG. 7. When multiple decorative members 7 are stacked and fitted into the fitting recess 10 of the holding member 8, the clamping portion 15, which is a leaf spring portion, may be configured such that, when the multiple decorative members 7 are stacked and fitted into the fitting recess 10 of the holding member 8 against the spring force of the leaf spring portion at the upper end of the rising portion 8b on the outer periphery of the holding member 8, the uppermost decorative member 7 of the multiple stacked decorative members 7 is pressed down by the spring force of the leaf spring portion, thereby fixing the multiple stacked decorative members 7 in the fitting recess 10 of the holding member 8.

In the above embodiment, the ultraviolet curable resin 13 is used as the light-transmitting light-curable resin that fixes the multiple decorative members 7 in the fitting recesses 10 of the holding member 8. However, the present invention is not limited to this, and for example, an infrared curable resin that is light-transmitting may be used. This infrared curable resin hardens when irradiated with infrared rays.

In addition, in the above embodiment, the holding member 8 of the decorative body 5 is fixed in the mounting recess 6 of the watch case 1 by adhering it with adhesive 11, but the present invention is not limited to this, and for example, the holding member 8 of the decorative body 5 may be adhered and fixed in the mounting recess 6 of the watch case 1 with double-sided adhesive tape. In this case, since the double-sided adhesive tape has no fluidity, there is no need to provide an adhesive reservoir 6a on the inner surface of the mounting recess 6.

In addition, while the above embodiment has been described as being applied to a wristwatch, the invention does not necessarily have to be applied to a wristwatch, but can also be applied to accessories such as bracelets, brooches, pendants, necklaces, and earrings.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and includes the inventions described in the claims and their equivalents.
The invention as set forth in the claims of this application is set forth below.

(Additional Note)
The invention described in claim 1 is a decorative body comprising a decorative member formed of a brittle material having optical transparency, the decorative member being characterized in that a plurality of layers are laminated.

The invention described in claim 2 is the decorative body described in claim 1, characterized in that it includes a holding member having a fixing portion to which the decorative member is fixed, and the decorative member is laminated in multiple layers within the fixing portion of the holding member.

The invention described in claim 3 is a decorative body according to claim 1 or claim 2, characterized in that the multiple decorative members are decorated on the front and back surfaces.

The invention described in claim 4 is the decorative body described in claim 2, characterized in that the holding member has the fixing portion formed by bending a metal plate.

The invention described in claim 5 is the decorative body described in claim 2 or claim 4, characterized in that the inner surface of the fixing part is colored.

The invention described in claim 6 is a decorative body according to any one of claims 2, 4, and 5, characterized in that it is provided with a member fixing portion that fixes the multiple decorative members within the fixing portion of the holding member.

The invention described in claim 7 is the decorative body described in claim 6, characterized in that the member fixing part has a locking part provided on the inner surface of the fixing part and an engaging part provided on the outer peripheral surface of the decorative member with which the locking part engages.

The invention described in claim 8 is the decorative body described in claim 6, characterized in that the member fixing portion is a clamp portion that fixes the multiple decorative members within the fixing portion.

The invention described in claim 9 is a decorative body described in any one of claims 2 and claims 4 to 8, characterized in that the multiple decorative members are fixed in the fixing portion of the holding member by a light-curing resin having optical transparency.

The invention described in claim 10 is a decorative body according to any one of claims 2 and claims 4 to 9, characterized in that the fixing portion is a fitting recess into which the decorative member is fitted and fixed.

The invention described in claim 11 is an ornament according to any one of claims 1 to 10, characterized in that the decorative member is laminated in multiple layers on the accessory body.

The invention described in claim 12 is a method for manufacturing an ornamental body, characterized by comprising a first step of forming a holding member having a fixing portion by bending a metal plate, and a second step of stacking and fixing a plurality of decorative members made of a light-transmitting brittle material to the fixing portion of the holding member.

The invention described in claim 13 is the manufacturing method of the decorative body described in claim 12, characterized in that in the second step, after applying a light-transmitting photocurable resin to the inner surface of the fixing part, the multiple mounting members are stacked and fitted into the fixing part, and in this state, light is irradiated through the multiple decorative members to the photocurable resin to harden the photocurable resin, thereby fixing the stacked multiple mounting members into the fixing part.

The invention described in claim 14 is an accessory characterized by comprising an ornament described in any one of claims 2 and claims 4 to 10, and an accessory body provided with an attachment part to which the retaining member of the ornament is attached.

The invention described in claim 15 is a watch characterized by having a decorative body described in any one of claims 1 to 11.

REFERENCE SIGNS LIST 1 watch case 2 band attachment section 3 switch section 4 watch crystal 5 decorative body 6 mounting recess 6a adhesive reservoir section 7 decorative member 7a decorative layer 8 holding member 8a bottom section 8b, 8c raised section 8d notch section 9 metal plate 10 fitting recess 10a colored layer 12 fixing section 12a locking protrusion 12b engagement recess 13 ultraviolet curing resin 15 clamp section

Claims (15)

A ring-shaped decorative body in which a plurality of decorative members having optical transparency are laminated;
A watch case on which the ring-shaped ornament can be attached,
Equipped with
The decorative body includes a ring-shaped holding member having a fixing portion to which the decorative member is fixed,
the wristwatch case is separate from the ring-shaped holding member and includes an attachment portion to which the ring-shaped holding member is attached,
Each of the stacked decorative members is fixed by the fixing portion of the holding member.
A wristwatch characterized by 2. The wristwatch according to claim 1,
The wristwatch is characterized in that the decorative member is made of a brittle material. 2. The wristwatch according to claim 1,
A wristwatch characterized in that the decorative member is laminated in multiple layers within the fixed portion of the holding member. In the wristwatch according to any one of claims 1 to 3,
The decorative member is characterized in that the front and back surfaces of the decorative member are decorated. 4. The wristwatch according to claim 3,
The wristwatch, wherein the fixing portion of the holding member is formed by bending a metal plate. In the wristwatch according to claim 3 or 5,
A wristwatch characterized in that the inner surface of the fixing part is colored. In the wristwatch according to any one of claims 3, 5 and 6,
A wristwatch, characterized in that the decorative body is provided with a member fixing portion that fixes the decorative member within the fixing portion of the holding member. 8. The wristwatch according to claim 7,
A wristwatch characterized in that the member fixing portion comprises a locking portion provided on the inner surface of the fixing portion, and an engaging portion provided on the outer peripheral surface of the decorative member with which the locking portion engages. 8. The wristwatch according to claim 7,
A wristwatch characterized in that the member fixing portion is a clamp portion that fixes the decorative member within the fixing portion. In the wristwatch according to any one of claims 3 and 5 to 9,
A wristwatch, characterized in that the decorative member is fixed within the fixing portion of the holding member by a light-transmitting photocurable resin. In the wristwatch according to any one of claims 3 and 5 to 10,
The said fixing portion is a fitting recess into which the said decorative member is fitted and fixed. 2. The wristwatch according to claim 1 ,
the watch case is ring-shaped;
The wristwatch, characterized in that the attachment portion is formed in a ring shape along the outer periphery of the wristwatch case. 2. The wristwatch according to claim 1 ,
The attachment portion is a mounting recess,
The wristwatch, wherein the holding member is adhered and fixed within the mounting recess of the wristwatch case. The wristwatch according to any one of claims 1 to 13 ,
A wristwatch characterized in that the decorative body is shaped like a ring surrounding the crystal. In the wristwatch according to any one of claims 1 to 14 ,
A wristwatch, characterized in that the shape of the wristwatch case is a ring that surrounds the crystal.

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