JP2022118088A - Watchband and watch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a watchband that can be easily manufactured with a simple structure and that excels in abrasion resistance and wearability, and to provide a watch equipped with the watchband.

SOLUTION: The watchband includes: a first resin layer 10 which is formed from flexible synthetic resin and which has abrasion resistance; and a second resin layer 11 which has a lower hardness than the first resin layer 10, which is synthetic resin of the same system as the first resin layer 10, and which is integrally formed on the rear face of the first resin layer 10. Consequently, the structure is simple, and the first resin layer 10 and the second resin layer 11 can be easily manufactured. Also, as the first resin layer 10 on the surface side has abrasion resistance, there is no wear even if the watchband is rubbed against a garment, a desk, etc., with durability secured. In addition, the second resin layer 11 on the rear face side has a lower hardness than the first resin layer 10 and has a higher tensile strength, so that when the watchband is put on the wrist, the watchband can be fitted to the wrist, which provides excellent wearability.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2022,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a band used for a wristwatch, a bag, a bag, etc., and a watch provided with the same.

For example, in a wristwatch band, as described in Patent Document 1, a band material is formed by laminating carbon fiber fabric on a synthetic resin band core, and this band material is repeatedly laminated to form a band material. A structure in which a plurality of laminated band materials are covered with a coat layer is known.

JP-A-07-136008

However, in such a wristwatch band, when the carbon fiber fabric is integrally formed with the band core by insert molding, the carbon fiber fabric must be impregnated with the same resin as the band core or a compatible resin. It is not possible to ensure the adhesion strength between the band core and the carbon fiber fabric and integrally mold the band core and the carbon fiber fabric.

In addition, this watch band has a structure in which the band material, in which carbon fiber fabric is layered on the band core, is repeatedly laminated. There is also the problem that the production is complicated and troublesome because it must be compressed and laminated under high pressure.

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to provide a band having a simple structure, easy to manufacture, and excellent wear resistance and wearability, and a timepiece having the same.

The present invention comprises a first resin layer formed of a synthetic resin having flexibility, and a synthetic resin having lower hardness than the first resin layer and of the same system as the first resin layer. a second resin layer integrally formed on the back surface; a peel prevention portion provided on the outer periphery of the first resin layer and covering the outer peripheral surface of the entire periphery of the second resin layer; and a retaining portion that protrudes and is embedded in the first resin layer, wherein the first resin layer has higher wear resistance than the second resin layer.

According to the present invention, it is possible to provide a device that can be easily manufactured with a simple structure and that is excellent in wear resistance and wearability.

1 is an exploded perspective view showing an embodiment in which the present invention is applied to a wristwatch; FIG. 2 is an enlarged cross-sectional view of the band shown in FIG. 1 taken along the line AA. FIG. 2 is an enlarged cross-sectional view showing a main part of the band shown in FIG. 1, taken along the line BB. FIG. FIG. 2 is an enlarged cross-sectional view of the band shown in FIG. 1 taken along line CC. 1 shows a first modified example of a wristwatch band to which the present invention is applied, (a) being an enlarged plan view showing a main part of the band, and (b) being an enlarged cross-sectional view taken along line DD of (a). . 2 shows a cross-section of a wristwatch band according to a second modification to which the present invention is applied, (a) being an enlarged cross-sectional view showing a cross-section at the same position as the CC arrow of the band shown in FIG. 1, (b) 2 is an enlarged cross-sectional view showing a cross-section of the band shown in FIG. 1 at the same position as the AA arrow.

An embodiment in which the present invention is applied to a wristwatch will be described below with reference to FIGS. 1 to 4. FIG.
This wristwatch includes a wristwatch case 1 as shown in FIG. Band attachment portions 3 to which a pair of bands 2 are attached are provided on the 12 o'clock side and the 6 o'clock side of the wristwatch case 1, respectively. A switch section 4 is provided on the 3 o'clock side of the wristwatch case 1 .

As shown in FIG. 1, each of the pair of bands 2 is made of synthetic resin in a band-like shape, and one end of each band is attached to each of the band mounting portions 3 on the 12 o'clock side and 6 o'clock side of the wristwatch case 1 by first pin members 5 . configured to be installed by In this case, one band 2 attached to the 6 o'clock side of the wristwatch case 1 is provided with a plurality of band holes 6 at regular intervals along the longitudinal direction.

1, a buckle 7 for connecting the pair of bands 2 is attached by a second pin member 8 to the other end of the other band 2 attached to the 12 o'clock side of the wristwatch case 1. It is Also, the other end of the other band 2 is provided with an idle ring 9 for inserting and fixing the other end of the one band 2 connected by the buckle 7 so as to overlap the other band 2. It is

In this case, the buckle 7 is arranged on both sides of the other end of the other band 2 as shown in FIG. and a stick 7b to be inserted into the band hole 6 of the band 2. That is, the buckle 7 is configured such that both ends of the main body portion 7a and a rod 7b disposed between the two ends are attached to the other end of the other band 2 by the second pin member 8. It is

As a result, the pair of bands 2, as shown in FIG. It is inserted into the body portion 7a of the buckle 7, the rod 7b attached to the buckle 7 is inserted into the band hole 6 of one band 2, and the inserted rod 7b is locked to the body portion 7a of the buckle 7. The pair of bands 2 are connected to each other.

By the way, as shown in FIGS. 2 to 4, each of the pair of bands 2 includes a first resin layer 10 made of a flexible synthetic resin and a synthetic resin of the same type as the first resin layer 10. and a second resin layer 11 integrally formed on the lower surface, which is the back surface of the resin layer 10 . The first resin layer 10 is made of flexible synthetic resin such as silicone resin, fluororesin, or urethane resin, preferably silicone resin.

The silicone resin of the first resin layer 10 has higher hardness and wear resistance than the second resin layer 11, as shown in FIGS. The second resin layer 11 is made of the same synthetic resin as the first resin layer 10, such as a flexible synthetic resin such as silicone resin, fluorine resin, or urethane resin, preferably the same silicone resin as the first resin layer 10. ing.

In this case, as shown in FIGS. 2 to 4, the second resin layer 11 is a silicone resin having a lower hardness than the first resin layer 10 and a higher tensile strength than the first resin layer 10. It is made of a silicone resin that is softer and more flexible than the layer 10 . The second resin layer 11 is formed thicker than the first resin layer 10 .

As a result, as shown in FIGS. 2 to 4, the first resin layer 10 and the second resin layer 11 are separated from each other when the first resin layer 10 and the second resin layer 11 are integrally formed by insert molding. Since the first resin layer 10 and the second resin layer 11 are made of the same silicone resin with different characteristics, the interface between the first resin layer 10 and the second resin layer 11 is fused and bonded with high adhesion. is configured to

In this case, the second resin layer 11 is formed thicker than the first resin layer 10, so that the entire band 2 is soft and has a high tensile strength. Moreover, the first resin layer 10 and the second resin layer 11 may be formed of the same color silicone resin, or may be formed of different color silicone resins.

By the way, each of the pair of bands 2 is provided with a peeling preventing portion 12 for preventing peeling of the first resin layer 10 and the second resin layer 11, as shown in FIGS. In this case, of the pair of bands 2, one band 2 is attached to the band attachment portion 3 on the 6 o'clock side of the wristwatch case 1, and the other band 2 is attached to the band attachment portion 3 on the 12 o'clock side of the wristwatch case 1. , the structure of the detachment preventing portion 12 is slightly different.

2 and 3, the anti-peeling portion 12 of one band 2 attached to the 6 o'clock side of the wristwatch case 1 is provided on the outer periphery of the first resin layer 10 and is attached to the second resin layer 11. An outer peripheral wall 12a covering the outer peripheral surface, and a second resin layer 11 provided in the first resin layer 10 corresponding to the plurality of band holes 6 provided in one of the bands 2, respectively, and corresponding to the plurality of band holes 6. and a plurality of cylindrical walls 12b respectively covering the inner peripheral surfaces of the .

As shown in FIGS. 2 and 3, the outer peripheral wall 12a has substantially the same thickness as the first resin layer 10, and extends over the entire length of the band 2 from the outer peripheral end of the entire circumference of the first resin layer 10 over the entire length of the band 2. It is provided over the lower surface of the entire circumference of the second resin layer 11 . Thus, the outer peripheral wall 12a is formed so as to cover the entire outer peripheral surface of the second resin layer 11, thereby preventing the first resin layer 10 and the second resin layer 11 from being separated from each other on the outer peripheral surface. .

2 and 3, each of the plurality of cylindrical walls 12b has substantially the same thickness as the first resin layer 10 and corresponds to the plurality of band holes 6 provided in one band 2. 10 to the lower surface of each inner circumference of the second resin layer 11 corresponding to the plurality of band holes 6 . As a result, the plurality of cylindrical walls 12b cover the respective inner peripheral surfaces of the second resin layer 11 corresponding to the plurality of band holes 6, thereby forming the first resin layer 10 and the second resin layer 10 corresponding to the plurality of band holes 6 and the second resin layer 11 corresponding to the plurality of band holes 6. It is formed so as to prevent separation from the resin layer 11 on each inner peripheral surface.

In this case, as shown in FIGS. 1 to 3, the plurality of cylindrical walls 12b are provided with a plurality of band holes 6 along the entire length of the band 2 in the longitudinal direction. Corresponding to the holes 6, they are provided at equal intervals over substantially the entire length of the band 2. As shown in FIG. For this reason, the plurality of cylindrical walls 12b are formed so as to prevent peeling of the inner peripheral surfaces of the first resin layer 10 and the second resin layer 11 corresponding to the plurality of band holes 6 over substantially the entire length of the band 2. formed.

On the other hand, the anti-peeling portion 12 of the other band 2 attached to the 12 o'clock side of the wristwatch case 1 is provided on the outer periphery of the first resin layer 10 to cover the outer periphery of the second resin layer 11, as shown in FIG. It has a structure having only the outer peripheral wall 12a. This outer peripheral wall 12a has the same structure as the outer peripheral wall 12a of one band 2 attached to the 6 o'clock side of the wristwatch case 1 described above.

Next, the action of the pair of bands 2 in such a wristwatch will be described.
When manufacturing one of the pair of bands 2 to be attached to the 6 o'clock side of the wristwatch case 1, the first resin layer 10 is formed integrally with the second resin layer 11 by insert molding. In this case, the first resin layer 10 having the detachment preventing portion 12 is formed in advance from a silicone resin having higher hardness and abrasion resistance than the second resin layer 11 .

That is, the peel-preventing portion 12 is formed on the first resin layer 10 of one of the bands 2 attached to the 6 o'clock side of the wristwatch case 1 . In this case, an outer peripheral wall 12 a is provided on the outer periphery of the first resin layer 10 to cover the outer peripheral surface of the second resin layer 11 ; and a plurality of cylindrical walls 12b for respectively covering the inner peripheral surfaces of the second resin layer 11 corresponding to the plurality of band holes 6 are formed.

When the first resin layer 10 formed in this manner is integrally molded with the second resin layer 11 by insert molding, the second resin layer 11 must be made of the same silicone resin with different characteristics from the first resin layer 10. As a result, the boundary surface between the first resin layer 10 and the second resin layer 11 is fused and joined reliably and favorably with high adhesion.

In this case, since the outer peripheral surface of the entire circumference of the second resin layer 11 is covered with the outer peripheral wall 12a of the peel preventing portion 12, peeling of the first resin layer 10 and the second resin layer 11 on the outer peripheral surface is prevented. be blocked. Further, in this case, since the inner peripheral surfaces of the second resin layer 11 corresponding to the plurality of band holes 6 are covered with the plurality of cylindrical walls 12b of the separation preventing portion 12, the plurality of band holes 6 are covered. Delamination of the corresponding inner peripheral surfaces of the first resin layer 10 and the second resin layer 11 is prevented.

In this case, the plurality of cylindrical walls 12b are provided at equal intervals over substantially the entire length of the band 2 corresponding to the plurality of band holes 6 provided at equal intervals over the entire length of the band 2 in the longitudinal direction. As a result, peeling of the inner peripheral surfaces of the first resin layer 10 and the second resin layer 11 corresponding to the plurality of band holes 6 over substantially the entire length of the band 2 is prevented.

On the other hand, when manufacturing the other band 2 attached to the 12 o'clock side of the wristwatch case 1, the first resin layer 10 is inserted into the first resin layer 10 in the same manner as the one band 2 attached to the 6 o'clock side of the wristwatch case 1. 2 Molded integrally with the resin layer 11 . Also in this case, the first resin layer 10 provided with the detachment preventing portion 12 is formed in advance from silicone resin having higher hardness and abrasion resistance than the second resin layer 11 .

That is, when forming the detachment preventing portion 12 on the first resin layer 10 of the other band 2 attached to the 12 o'clock side of the wristwatch case 1, Only the outer peripheral wall 12a for covering the outer periphery of the second resin layer 11 is formed. This first resin layer 10 is molded integrally with the second resin layer 11 by insert molding, like the one band 2 attached to the 6 o'clock side of the wristwatch case 1 .

At this time as well, the second resin layer 11 is made of the same silicone resin with different characteristics from the first resin layer 10, like the one band 2 attached to the 6 o'clock side of the wristwatch case 1. and the second resin layer 11 are fused together to ensure and excellent bonding with high adhesion. In this state, the outer peripheral surface of the entire circumference of the second resin layer 11 over the entire length of the band 2 is covered with the outer peripheral wall 12a of the peel preventing portion 12, so that the first resin layer 10 and the second resin layer 11 are separated from each other. detachment on the outer peripheral surface of the is prevented.

Further, when the first resin layer 10 and the second resin layer 11 of the pair of bands 2 attached to the 12 o'clock side and the 6 o'clock side of the wristwatch case 1 are formed of the same color silicone resin, the single A band 2 of one color is obtained. Further, when the first resin layer 10 and the second resin layer 11 in the pair of bands 2 are formed of silicone resins of different colors, the bands 2 can be colored, so that the colors are excellent and the design is excellent. Increased.

When the pair of bands 2 manufactured in this manner is attached to the wristwatch case 1 and used, one of the pair of bands 2 is attached to the band attachment portion 3 on the 6 o'clock side of the wristwatch case 1. The other band 2 is attached to the wristwatch case 1 on the 12 o'clock side band attachment portion 3 by the first pin member 5 .

In this case, the buckle 7 is attached in advance by the second pin member 8 to the other end of the other band 2 attached to the 12 o'clock side of the wristwatch case 1 . At this time, both ends of the body portion 7a of the buckle 7 and a rod 7b disposed between the two ends are attached to the other end of the other band 2 by the second pin member 8. As shown in FIG.

When the wristwatch case 1 is attached to the wrist by the pair of bands 2, the other end of one band 2 is inserted into the main body portion 7a of the buckle 7 of the other band 2, and the rod 7b to which the buckle 7 is attached is inserted. is inserted into the band hole 6 of one of the bands 2, and the inserted stick 7b is engaged with the body portion 7a of the buckle 7. As a result, the pair of bands 2 are connected to each other, and the wristwatch case 1 is attached to the arm.

When the wristwatch is carried and used in this state, even if the band 2 rubs against clothes, a desk, etc., the first resin layer 10 on the surface side of the band 2 has a higher hardness than the second resin layer 11 and is abrasion resistant. Since the first resin layer 10 on the surface side of the band 2 is not worn because it is made of a silicone resin having elasticity, the durability is improved.

In addition, when the band 2 is attached to the arm, the second resin layer 11 on the back side contacts the arm, but the second resin layer 11 has a hardness lower than that of the first resin layer 10 and has a tensile strength. Since the second resin layer 11 is made of a silicone resin having a high viscosity, that is, a silicone resin having softer flexibility than the first resin layer 10, the second resin layer 11 fits the arm and is worn well, so that the wearability is good. In this case, since the second resin layer 11 is thicker than the first resin layer 10, the band 2 as a whole becomes softer and the tensile strength is increased, thereby improving usability.

In addition, since the band 2 is provided with the anti-peeling portion 12, the first resin layer 10 and the second resin layer 11 are not peeled off by the anti-peeling portion 12, so that the band 2 can be worn on the arm. can be used successfully. That is, the separation prevention portion 12 includes an outer peripheral wall 12a that is provided on the outer periphery of the first resin layer 10 and covers the outer peripheral surface of the second resin layer 11, so that the first resin layer 10 and the second resin layer Separation on the outer peripheral surface from 11 is reliably prevented.

In this case, the anti-peeling portion 12 of one band 2 attached to the 6 o'clock side of the wristwatch case 1 is formed on the first resin layer 10 corresponding to each of the plurality of band holes 6 in addition to the outer peripheral wall 12a of the outer peripheral portion. Since a plurality of cylindrical walls 12b are provided to respectively cover the inner peripheral surfaces of the second resin layer 11 corresponding to the plurality of band holes 6, the cylindrical wall 12b corresponding to the band holes 6 can be fitted with the buckle 7. Even if the band 7b is inserted, the plurality of cylindrical walls 12b reliably prevent abrasion and peeling of the inner peripheral surfaces of the first resin layer 10 and the second resin layer 11 corresponding to the band hole 6 .

As described above, according to the wristwatch band 2, the first resin layer 10 made of flexible synthetic resin, having high hardness and abrasion resistance, and the first resin layer 10 having a hardness lower than that of the first resin layer 10 are formed. and a second resin layer 11 that is made of the same synthetic resin as the first resin layer 10 and has a higher tensile strength than the first resin layer 10, and is integrally formed on the back surface, which is the lower surface of the first resin layer 10. By having it, it is possible to easily manufacture with a simple structure, and to provide a device excellent in wear resistance and wearability.

That is, in this band 2, a first resin layer 10 made of a flexible synthetic resin and a second resin layer made of the same synthetic resin as the first resin layer 10 are integrally formed by insert molding (two-color molding). Since it is a structure that is formed into a flat shape, the structure is simple and can be easily manufactured. In this case, since the first resin layer 10 and the second resin layer 11 are made of the same silicone resin with different characteristics, the interface between the first resin layer 10 and the second resin layer 11 is fused to achieve high adhesion. can be reliably and satisfactorily joined.

In addition, in this band 2, the first resin layer 10 on the surface side is made of a synthetic resin having flexibility, and is harder than the second resin layer 11 and has abrasion resistance. Even if the first resin layer 10 rubs against clothes or a desk, the durability of the band 2 can be improved because the first resin layer 10 is not worn.

In this band 2, the second resin layer 11 on the back side is made of a silicone resin having lower hardness and higher tensile strength than the first resin layer 10, that is, silicone resin having softer flexibility than the first resin layer 10. Since the second resin layer 11 can be fitted to the arm when worn on the arm, the wearability is good.

In this case, since the second resin layer 11 is thicker than the first resin layer 10, the entire band 2 can be softened and the tensile strength of the entire band 2 can be increased. , it is possible to provide a user-friendly one because it can be fitted to the arm.

In this case, with this band 2, if the first resin layer 10 and the second resin layer 11 are made of the same color silicone resin, the band 2 can be provided in a single color. In addition, if the first resin layer 10 and the second resin layer 11 are formed of silicone resins of different colors, the band 2 can be colored, thus providing a product with excellent color and design. can do.

In addition, the band 2 is provided with the peel prevention portion 12 that prevents the first resin layer 10 and the second resin layer 11 from being peeled off. 11 can be reliably prevented from peeling off, the band 2 can be worn on the arm and used satisfactorily.

In this case, the detachment preventing portion 12 is provided with the outer peripheral wall 12a that is provided on the outer periphery of the first resin layer 10 and covers the outer peripheral surface of the second resin layer 11, so that the outer peripheral wall 12a prevents the first resin layer 10 from and the second resin layer 11 can be reliably prevented from being separated from each other. That is, the outer peripheral wall 12a is provided on the outer periphery of the first resin layer 10 corresponding to the entire circumference of the band 2, so that the first resin layer 10 and the second resin layer 10 and the second resin layer 10 on the entire circumference of the band 2 over the entire length are provided. Separation from the resin layer 11 at the outer peripheral portion can be reliably prevented.

In addition, the peel preventing portions 12 are provided on the first resin layer 10 corresponding to the plurality of band holes 6, respectively, and cover the respective inner peripheral surfaces of the second resin layer 11 corresponding to the plurality of band holes 6, respectively. By providing a plurality of cylindrical walls 12b, the plurality of cylindrical walls 12b can reliably prevent separation of the inner peripheral surfaces of the first resin layer 10 and the second resin layer 11 corresponding to the band holes 6. can.

In this case, since the plurality of band holes 6 are provided at regular intervals over the entire length of the band 2 in the longitudinal direction, the plurality of cylindrical walls 12b of the band 2 correspond to the plurality of band holes 6, respectively. Since they are provided at equal intervals over substantially the entire length of the band 2, peeling of the inner peripheral surfaces of the first resin layer 10 and the second resin layer 11 corresponding to the plurality of band holes 6 over substantially the entire length of the band 2 can be prevented. You can definitely prevent it.

Furthermore, in this band 2, a buckle 7 for connecting the pair of bands 2 is attached to the other end of the other band 2 attached to the 12 o'clock side of the wristwatch case 1. By inserting the rod 7b into the band hole 6 of one of the bands 2, the pair of bands 2 can be reliably and satisfactorily connected.

In this case, in this band 2, when connecting the pair of bands 2 with the buckle 7, even if the rod 7b with the buckle 7 is inserted inside the cylindrical wall 12b that is the band hole 6 of one of the bands 2, Wear of the band hole 6 can be prevented by the plurality of cylindrical walls 12b, and peeling of the inner peripheral surfaces of the first resin layer 10 and the second resin layer 11 corresponding to the band hole 6 can be reliably prevented. can.

In the above-described embodiment, the peel-preventing portion 12 includes the outer peripheral wall 12a provided on the outer periphery of the first resin layer 10 and the plurality of outer peripheral walls 12a provided on the first resin layer 10 corresponding to the plurality of band holes 6, respectively. Although the case where the cylindrical wall 12b is provided, the present invention is not limited to this. The structure provided with the retainer 15 as shown in FIG.

That is, as shown in FIGS. 5(a) and 5(b), the retaining portion 15 of this first modification is made of a silicone resin having lower hardness and higher tensile strength than the first resin layer 10, that is, the first A plurality of them protrude from the upper surface of a second resin layer 11 made of a silicone resin that is softer than the first resin layer 10 and are embedded in the first resin layer 10 .

In this case, as shown in FIGS. 5(a) and 5(b), the retaining portion 15 is provided along the longitudinal direction of the band 2 at a location avoiding the band hole 6 of the band 2 and extending substantially over its entire length. long formed. In addition, the retaining portion 15 has an inverted trapezoidal cross section in the width direction perpendicular to the longitudinal direction of the band 2 .

That is, as shown in FIGS. 5(a) and 5(b), the retaining portion 15 has a length in the width direction orthogonal to the longitudinal direction of the band 2 at the upper end surface protruding from the upper surface of the second resin layer 11. The width of the second resin layer 11 is formed to be longer than the length in the width direction of the lower surface of the portion located at the boundary with the upper surface of the second resin layer 11 .

For this reason, since the second resin layer 11 is made of a silicone resin having a lower hardness and flexibility than the first resin layer 10, the second resin layer 11 is molded with a molding die (not shown). Even if the cross section of the retaining portion 15 in the width direction is formed in an inverted trapezoidal shape, the retaining portion 15 can be easily removed from the mold due to the flexibility of the silicone resin. It is configured.

As a result, as shown in FIGS. 5A and 5B, the band 2 is formed with the second resin layer 11 provided with the retaining portion 15 in advance, and the second resin layer 11 is By inserting it into a two-color molding die (not shown) and forming the first resin layer 10 integrally with the second resin layer 11 in this state, the retaining portion 15 is inserted into the first resin layer 10. It is configured to be embedded and formed.

As described above, according to this wristwatch band 2, in addition to having the same effects as those of the first embodiment, the anti-peeling portion 12 is provided so as to protrude from the upper surface of the second resin layer 11 so that the first resin layer 10 By providing the retaining portion 15 embedded in the second resin layer 10, the retaining portion 15 of the second resin layer 11 embedded in the first resin layer 10 securely holds the first resin layer 10 and the second resin layer 11 together. Moreover, it is possible to firmly fix the first resin layer 10 and the second resin layer 11, thereby reliably preventing the first resin layer 10 and the second resin layer 11 from being separated.

In this case, the retainer portion 15 is formed along the longitudinal direction of the band 2 at a location avoiding the band hole 6 of the band 2 over substantially the entire length of the band 2 . The first resin layer 10 and the second resin layer 11 can be reliably and firmly fixed. In addition, the retaining portion 15 has an inverted trapezoidal cross section in the width direction perpendicular to the longitudinal direction of the band 2 , so that the retaining portion 15 embedded in the first resin layer 10 is formed by the first resin layer 10 . Since there is no escape from the layer 10, the first resin layer 10 and the second resin layer 11 can be reliably and firmly fixed.

In addition, in the first modification described above, the case where the retaining portion 15 is provided in the second resin layer 11 and embedded in the first resin layer 10 was described, but the present invention is not limited to this, and for example, the retaining portion 15 may be protruded from the lower surface of the first resin layer 10 and embedded in the second resin layer 11 . In this case, when the retaining portion 15 is formed integrally with the first resin layer 10 using a molding die, a slide core may be used.

In addition, in the above-described embodiment and its first modification, the case where the outer surface of the first resin layer 10 and the outer surface of the second resin layer 11 are exposed to the outside has been described. The structure is not limited to this, and a structure in which a coating layer 18 is provided as in the second modification shown in FIGS. 6A and 6B, for example, may be used.

That is, as shown in FIGS. 6(a) and 6(b), the coating layer 18 is a transparent protective layer, and is provided on the upper and outer peripheral surfaces of the first resin layer 10 and on the lower and outer surfaces of the second resin layer 11. It is provided on the outer peripheral surface and covers the entire outer surfaces of the first resin layer 10 and the second resin layer 11 . In this case, the thickness of the coating layer 18 on the upper surface side of the first resin layer 10 is thicker than the thickness on the lower surface side of the second resin layer 11 .

The coating layer 18 is also provided on the inner peripheral surface of the cylindrical wall 12b provided in the first resin layer 10 corresponding to the plurality of band holes 6, as shown in FIG. 6(b). As a result, the coating layer 18 covers the upper surface of the first resin layer 10 and the lower surface of the second resin layer 11 of the band 2, the outer surface of the outer peripheral wall 12a of the first resin layer 10, and the inner peripheral surface of the cylindrical wall 12b. Since the band 2 can be reliably covered and well protected, the durability of the band 2 can be further improved.

In addition, in the second modification described above, the case where the entire outer surfaces of the first resin layer 10 and the second resin layer 11 are covered and protected by the coating layer 18 was described, but the present invention is not limited to this, for example Alternatively, a coating layer 18 may be provided on the upper surface of the first resin layer 10 and the lower surface of the second resin layer 11 .

In addition, in the embodiment and each modification thereof, the case where the second resin layer 11 is formed thicker than the first resin layer 10 has been described. The two resin layers 11 may have substantially the same thickness, and the second resin layer 11 may be formed thinner than the first resin layer 10 .

In addition, the outer peripheral wall 12a and the plurality of cylindrical walls 12b of the separation preventing portion 12 are not limited to having substantially the same thickness as the first resin layer 10, and may be thicker or thinner than the first resin layer 10. FIG. In addition, the outer peripheral wall 12a of the detachment prevention portion 12 is provided over the entire circumference of the lower surface of the second resin layer 11. It may be halfway. That is, it is not necessary to cover the entire outer peripheral surface of the second resin layer 11 .

Similarly, the case where the plurality of cylindrical walls 12b are provided over the lower surface of each inner circumference of the second resin layer 11 has been described, but this is not limiting, and the cylindrical walls 12b do not reach the lower surface of the second resin layer 11 and may It may be up to That is, it is not necessary to cover all the inner peripheral surfaces of the second resin layer 11 .

Also, in the above-described embodiment and each of its modifications, the case where it is applied to the wristwatch band 2 has been described, but the present invention does not necessarily have to be applied to the wristwatch band 2, and can also be applied to bands such as bags and bags. can be applied.

Although one embodiment of the present invention has been described above, the present invention is not limited to this, and includes the invention described in the claims and the scope of equivalents thereof.
The invention described in the claims of the present application will be additionally described below.

(Appendix)
In the invention according to claim 1, a first resin layer formed of a synthetic resin having flexibility and a synthetic resin having lower hardness than the first resin layer and the same type of synthetic resin as the first resin layer, the and a second resin layer integrally formed on the back surface of the first resin layer, wherein the first resin layer has higher wear resistance than the second resin layer.

According to a second aspect of the present invention, there is provided the band according to the first aspect, further comprising a peel preventing portion for preventing peeling between the first resin layer and the second resin layer.

According to a third aspect of the invention, there is provided the band according to the second aspect, wherein the peel preventing portion includes an outer peripheral wall provided on the outer periphery of the first resin layer and covering the outer periphery of the second resin layer. It is a band characterized by

The invention according to claim 4 is the band according to claim 2 or 3, wherein the first resin layer and the second resin layer have a plurality of band holes provided along the longitudinal direction. and the peel preventing portions are provided in the first resin layer corresponding to the plurality of band holes, respectively, and cover the inner circumferences of the second resin layer corresponding to the plurality of band holes. A band characterized by having a wall.

The invention according to claim 5 is the band according to any one of claims 2 to 4, wherein the peel preventing portion is provided on one of the first resin layer and the second resin layer, The band is characterized by comprising a retaining portion embedded in the other of the first resin layer and the second resin layer.

The invention according to claim 6 is the band according to any one of claims 1 to 5, wherein a coating layer is provided on the outer surface of the first resin layer and the outer surface of the second resin layer. It is a band characterized by being

According to a seventh aspect of the invention, there is provided a timepiece comprising the band according to any one of the first to sixth aspects.

1 wristwatch case 2 band 3 band attachment portion 5 first pin member 6 band hole 7 buckle 8 second pin member 9 free ring 10 first resin layer 11 second resin layer 12 peel prevention portion 12a outer peripheral wall 12b cylindrical wall 15 retainer Part 18 Coating layer

The present invention comprises a first resin layer formed from a flexible synthetic resin, and a second resin layer having a hardness lower than that of the first resin layer and integrally formed on the back surface of the first resin layer. , wherein the first resin layer includes a plurality of band holes provided along the longitudinal direction, and the entire inner surfaces of the band holes are formed of the first resin layer . be.

Claims (6)

a first resin layer formed from a flexible synthetic resin;
a second resin layer that is lower in hardness than the first resin layer and made of the same synthetic resin as the first resin layer and integrally formed on the back surface of the first resin layer;
A peeling preventing portion provided on the outer periphery of the first resin layer and covering the outer peripheral surface of the entire periphery of the second resin layer;
a retaining portion protruding from the upper surface of the second resin layer and embedded in the first resin layer;
with
The band, wherein the first resin layer has higher abrasion resistance than the second resin layer. 2. The band according to claim 1, wherein the first resin layer and the second resin layer have a plurality of band holes provided along the longitudinal direction,
The separation preventing portions are provided in the first resin layer corresponding to the plurality of band holes, respectively, and have a plurality of cylindrical walls covering respective inner circumferences of the second resin layer corresponding to the plurality of band holes. A band comprising: 3. The band according to claim 1, wherein a coating layer is provided on the outer surface of said first resin layer and the outer surface of said second resin layer. 4. The band according to any one of claims 1 to 3, wherein the retaining portion has an inverted trapezoidal cross section in a direction perpendicular to the longitudinal direction of the band. 5. The band according to claim 1, wherein said first resin layer and said second resin layer are integrally molded by insert molding. A timepiece comprising the band according to any one of claims 1 to 5.

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