JP2022051811A - Band and watch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a band that can prevent band pieces from breaking by impact even if the band pieces are formed with a brittle material, and also to provide a watch equipped with the band.

SOLUTION: The band includes: a plurality of band pieces 3 in which a projected part 6 is prepared in one end and a recessed part 7 with the size corresponding to the projected part 6 is prepared in the other end and in which a brittle material is used; a buffer cylinder 4 which is inserted into a first piece connection hole 8 that is provided in the projected part 6 of these band pieces 3 and into a second piece connection hole 9 that is provided in both side parts 7a of the recessed part 7 of the other band piece 3 for the projected part 6 to be arranged, and which fastens the projected part 6 of the band piece 3 and the recessed part 7 of the other band piece 3 in a noncontact state; and a connection pin 5 which is inserted into the buffer cylinder 4 and which connects the band piece 3 and the other band piece 3. Consequently, the projected part 6 of the band piece 3 and the recessed part 7 of the other band piece 3 can be fastened in a noncontact state with the buffer cylinder 4, so that the band pieces 3 can be prevented from breaking by impact even if the band pieces 3 are formed with the brittle material.

SELECTED DRAWING: Figure 4

COPYRIGHT: (C)2022,JPO&INPIT

Description

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

For example, in a wristwatch band, as described in Patent Document 1, band pieces having a convex portion at one end and a concave portion having a size corresponding to the convex portion at the other end are provided. When connecting, a structure is known in which a convex portion of a band piece is arranged in a concave portion of another adjacent band piece, and the convex portion and the concave portion are connected by a metal connecting pin.

JP-A-2017-80605

In this type of band, an elastic material is placed between both sides of the convex portion and both sides of the corresponding concave portion in a state where the convex portion of the band piece is arranged in the concave portion of another adjacent band piece. It is configured to hold the rotation angle between the band pieces connected by the connecting pin at an arbitrary angle by the elastic force of the elastic member.

In such a wristwatch band, when the band piece is made of a brittle material such as sapphire, glass, or ceramic, the elastic material can prevent the band piece from being damaged due to contact between the convex portion of the band piece and the concave portion of another band piece. Even if it is possible, the convex part of the band piece and the concave part of the other band piece are in contact with the metal connecting pin that connects them. There is a problem that the concave part of the band piece is easily damaged.

An object to be solved by the present invention is to provide a band capable of preventing the band piece from being damaged by an impact even if the band piece is formed of a brittle material, and a timepiece including the band.

In the present invention, a band piece made of a brittle material having a convex portion provided at one end and a concave portion having a size corresponding to the convex portion provided at the other end, and a concave portion in which the convex portion of the band piece is arranged are provided. It is inserted into another member of the brittle material provided, a first connecting hole provided in the convex portion of the band piece, and a second connecting hole provided in both sides of the concave portion of the other member. A shock absorber that fixes the convex portion of the band piece and the concave portion of the other member in a non-contact state, and a connecting member that is inserted into the buffer cylinder to connect the band piece and the other member. It is a band characterized by having.

According to the present invention, even if the band piece is made of a brittle material, it is possible to prevent the band piece from being damaged by an impact.

It is an enlarged front view which showed the 1st Embodiment which applied this invention to a wristwatch. It is an enlarged side view of the wristwatch shown in FIG. The main part of the band shown in FIG. 1 is shown, (a) is an enlarged front view thereof, and (b) is an enlarged side view thereof. FIG. 3 is an enlarged cross-sectional view taken along the line AA of the band shown in FIG. 3A. FIG. 3 is an enlarged front view showing a main part of the band shown in FIG. 3A in an exploded manner. FIG. 3 is an enlarged cross-sectional view taken along the line BB of the band shown in FIG. 3 (a). FIG. 3 is an enlarged cross-sectional view taken along the line CC of the band attachment portion of the wristwatch shown in FIG. 1. It is an exploded perspective view which showed the state which the band is attached to the band attachment part of the wristwatch shown in FIG. FIG. 3 is an enlarged cross-sectional view of a main part showing a modified example of the band shown in FIG. It is an enlarged front view which showed the main part of the band in the 2nd Embodiment which applied this invention to a wristwatch. FIG. 3 is an enlarged cross-sectional view taken along the line DD of the band shown in FIG. It is an enlarged perspective view which showed the cushioning member of the band shown in FIG.

(First Embodiment)
Hereinafter, a first embodiment in which the present invention is applied to a wristwatch will be described with reference to FIGS. 1 to 8.
This wristwatch includes a wristwatch case 1 and a band 2 as shown in FIGS. 1 and 2. As shown in FIGS. 3 to 5, the band 2 includes a plurality of band pieces 3, and the plurality of band pieces 3 are sequentially connected by a pair of shock absorbers 4 and a connecting pin 5 which is a connecting member. ing.

As shown in FIGS. 3 to 5, each of the plurality of band pieces 3 is made of a hard brittle material such as sapphire, glass, or ceramic. The band piece 3 is provided with a convex portion 6 at one end and a concave portion 7 having a size substantially corresponding to the convex portion 6 at the other end. The convex portion 6 is provided at an intermediate portion of one end portion of the band piece 3.

As shown in FIGS. 3 to 5, the convex portion 6 has a width direction in which the length in the width direction orthogonal to the longitudinal direction of the band 2, which is the connecting direction of the band piece 3, is orthogonal to the connecting direction of the band piece 3. It is formed with a length of about half of the length of. Further, the convex portion 6 is formed so that the protruding length of the band piece 3 protruding in the connecting direction is about half the length of the band piece 3 in the connecting direction.

As shown in FIGS. 3 to 5, the recess 7 of the band piece 3 is provided in the middle portion of the other end of the band piece 3 located on the opposite side of the convex portion 6. The recess 7 is formed so that the length in the width direction orthogonal to the longitudinal direction of the band 2, which is the connecting direction of the band piece 3, is slightly longer than the length in the width direction orthogonal to the connecting direction of the band piece 3 of the convex portion 6. Has been done. Further, the recess 7 is formed so that the notch length in the connecting direction of the band piece 3 is slightly longer than the protruding length in the connecting direction of the band piece 3 of the convex portion 6.

As a result, as shown in FIGS. 3 to 5, the band piece 3 faces both side surfaces of the convex portion 6 when the convex portion 6 is arranged in the concave portion 7 of another adjacent band piece 3. It is configured so that a slight gap is provided between both side surfaces in the concave portion 7 and between the tip surface of the convex portion 6 and the inner end surface in the corresponding concave portion 7.

In this case, as shown in FIG. 4, the convex portion 6 is provided with the first piece connecting hole 8 penetrating in the width direction orthogonal to the longitudinal direction of the band 2, which is the connecting direction of the band piece 3. Further, both side portions 7a of the recess 7 are provided with second piece connecting holes 9 penetrating in the width direction orthogonal to the connecting direction of the band piece 3.

As shown in FIG. 4, the first piece connecting hole 8 of the convex portion 6 and the second piece connecting hole 9 of both side portions 7a of the concave portion 7 are the other band pieces 3 to which the convex portion 6 of the band piece 3 is adjacent. When arranged in the recess 7, it is provided so as to correspond to the same axis. Further, the inner diameters of the first piece connecting hole 8 of the convex portion 6 and the second piece connecting hole 9 of both side portions 7a of the concave portion 7 are different from each other. That is, the inner diameter of the first piece connecting hole 8 of the convex portion 6 is formed to be smaller than the inner diameter of the second piece connecting hole 9 of both side portions 7a of the concave portion 7.

On the other hand, as shown in FIGS. 4 and 5, the pair of shock absorbers 4 are formed in a tubular shape by a soft synthetic resin having elasticity such as silicone rubber. These pair of shock absorbers 4 are configured to be arranged in the first and second piece connecting holes 8 and 9, respectively, in the both side portions 7a of the recess 7 of the band piece 3. That is, the shock absorber 4 includes a small-diameter cylinder portion 4a to be inserted into the first piece connecting hole 8 of the convex portion 6, and a large-diameter cylinder portion 4b to be inserted into the second piece connecting hole 9 of both side portions 7a of the concave portion 7. It is provided with a stepped portion 4c provided at a boundary portion between the small diameter tubular portion 4a and the large diameter tubular portion 4b.

In this case, as shown in FIG. 4, the small-diameter cylinder portion 4a has a length in the axial direction slightly shorter than the inner diameter of the shock absorber 4, and both sides of the convex portion 6 and both sides of the concave portion 7 facing the convex portion 6. It is formed sufficiently longer than the gap between the surfaces. Further, the large-diameter tubular portion 4b is formed so that its axial length is longer than the axial length of the second piece connecting hole 9 provided on both side portions 7a of the recess 7 of the band piece 3.

As a result, as shown in FIG. 4, the shock absorber 4 has an inner end portion of the large diameter cylinder portion 4b when the large diameter cylinder portion 4b is inserted into the second piece connecting hole 9 of both side portions 7a of the recess 7. Protrudes into the recess 7 to insert the small diameter tubular portion 4a into the first piece connecting hole 8 of the convex portion 6 of the other band piece 3, and the stepped portion 4c to the side surface of the convex portion 6 of the other band piece 3. In this state, the outer end portion of the large-diameter tubular portion 4b is configured to project to the outside of both side portions 7a of the recess 7.

Therefore, as shown in FIG. 4, in this shock absorber 4, the inner end portion of the large diameter cylinder portion 4b protrudes into the concave portion 7, and the stepped portion 4c is pushed to the side surface of the convex portion 6 of the other band piece 3. When hit, both sides of the convex portion 6 of the band piece 3 and the concave portion 7 of the other band piece 3 are provided with a gap between the convex portion 6 of the band piece 3 and the concave portion 7 of the other band piece 3. It is configured to temporarily fix the portion 7a.

As shown in FIGS. 4 and 5, the connecting pin 5 is a metal rod-shaped member, and is inserted into a pair of shock absorbers 4 so that the convex portion 6 of the band piece 3 and the convex portion 6 are arranged. It is configured to connect both side portions 7a of the recess 7 of the other band piece 3 in a rotatable state. That is, the outer diameter of the connecting pin 5 is substantially the same as the inner diameter of the shock absorber 4, and the length in the axial direction is slightly longer than the length between the outer end faces of both side portions 7a of the recess 7 of the band piece 3. It is formed.

As a result, as shown in FIGS. 4 and 5, the pair of shock absorbers 4 are inserted into the first piece connecting hole 8 of the band piece 3 and the second piece connecting hole 9 of the other band piece 3. When inserted into the pair of shock absorbers 4 in this state, both ends of the connecting pin 5 are arranged in both ends of the pair of shock absorbers 4, and the convex portions 6 of the band piece 3 and the other band pieces are arranged. The convex portion 6 of the band piece 3 and the both side portions 7a of the concave portion 7 of the other band piece 3 adjacent thereto are connected in a rotatable state without contacting both side portions 7a of the concave portion 7 of 3. It is configured.

By the way, as shown in FIGS. 5 and 6, a pair of band protection members 10 are attached to both side portions of the band piece 3 by screw members 11. In this case, the band piece 3 is provided with a mounting hole 14 into which the screw member 11 is inserted so as to penetrate between the convex portion 6 and the concave portion 7 in the width direction orthogonal to the connecting direction of the band piece 3. Has been done. The pair of band protection members 10 are formed of a light and highly rigid material such as carbon resin in the same shape as the end faces on both sides of the band piece 3.

As shown in FIG. 6, the pair of band protection members 10 are each provided with counterbore holes 10a corresponding to the mounting holes 14 of the band piece 3 on the same axis. Further, as shown in FIG. 4, each end of the pair of shock absorbers 4 protruding from both side portions 7a of the recess 7 of the band piece 3 is inserted into each facing surface of the pair of band protection members 10. The holes 10b are provided in a concave shape without penetrating each of them.

As shown in FIG. 6, the screw member 11 includes a female screw portion 12 and a male screw portion 13. The female screw portion 12 includes a head portion 12a, a shaft portion 12b, and a screw hole 12c provided at an end portion of the shaft portion 12b. The female screw portion 12 is configured such that the shaft portion 12b is inserted into the mounting hole 14 of the band piece 3 while the head portion 12a is inserted and arranged in the counterbore hole 10a of one of the band protection members 10. ing.

As shown in FIG. 6, the male screw portion 13 includes a head portion 13a and a screw portion 13b. The male threaded portion 13 is arranged with the head portion 13a inserted into the counterbore hole 10a of the other band protection member 10, and the threaded portion 13b is inserted into the mounting hole 14 of the band piece 3 to form the female threaded portion 12. It is configured to be screwed into the screw hole 12c provided at the end of the shaft portion 12b of the above.

In this case, as shown in FIG. 6, the inner diameter of the mounting hole 14 of the band piece 3 is formed to be larger than the outer diameter of the shaft portion 12b of the female screw portion 12. Further, the counterbore hole 10a of the band protection member 10 has a large diameter portion in which the head portion 12a of the female screw portion 12 and the head portion 13a of the male screw portion 13 are arranged, and the shaft portion 12b and the male screw portion 13 of the female screw portion 12. It is provided with a small diameter portion into which the screw portion 13b is inserted. The small diameter portion of the counterbore hole 10a is formed so that the inner diameter thereof is smaller than the inner diameter of the mounting hole 14 of the band piece 3.

As a result, as shown in FIG. 6, in the screw member 11, the shaft portion 12b of the female screw portion 12 is inserted into the mounting hole 14 of the band piece 3 from the counterbore hole 10a of one of the band protection members 10, and the female screw portion 12 is inserted. When the head portion 12a of the band piece 12a is arranged in the counterbore hole 10a of the band protection member 10, the shaft portion 12b of the female screw portion 12 is configured so as not to come into contact with the mounting hole 14 of the band piece 3.

Further, as shown in FIG. 6, in this screw member 11, the head portion 12a of the female screw portion 12 is arranged in the counterbore hole 10a of the band protection member 10, and the screw portion 13b of the male screw portion 13 is the other. When the band piece 10 is inserted into the mounting hole 14 of the band piece 3 through the counterbore hole 10a of the band protection member 10 and screwed into the screw hole 12c of the shaft portion 12b of the female screw portion 12, the male screw portion is inserted into the mounting hole 14 of the band piece 3. It is configured so that the threaded portion 13b of 13 does not come into contact with each other.

As a result, as shown in FIG. 6, the threaded member 11 screwes the threaded portion 13b of the male threaded portion 13 into the threaded hole 12c of the shaft portion 12b of the female threaded portion 12 to tighten the female threaded portion 12 and the male threaded portion 13. The head portion 12a of the female screw portion 12 is arranged in the counterbore hole 10a of one band protection member 10, and the head portion 13a of the male screw portion 13 is arranged in the counterbore hole 10a of the other band protection member 10. The band protection member 10 is configured to be pressed against both side surfaces of the band piece 3.

In this case, as shown in FIGS. 4 and 6, when the pair of band protection members 10 are arranged on both side portions of the band piece 3, the pair of cushioning members project from both side portions 7a of the recess 7 of the band piece 3. By inserting each end of the cylinder 4 into each locking hole 10b, the pair of band protection members 10 are configured not to rotate around the screw member 11. Further, the screw member 11 is configured so that the shaft portion 12b of the female screw portion 12 does not come into contact with the band piece 3 when the shaft portion 12b is inserted into the mounting hole 14 of the band piece 3.

On the other hand, as shown in FIGS. 1 and 2, the band 2 is attached to a band attachment portion 15 provided on each side portion of the wristwatch case 1 on the 12 o'clock side and the 6 o'clock side, respectively. In this case, switch portions 16 are provided on each of the four locations on the 2 o'clock side, 4 o'clock side, 8 o'clock side, and 10 o'clock side of the wristwatch case 1.

As shown in FIG. 8, the wristwatch case 1 has a case body 17 made of a hard brittle material such as sapphire, glass, or ceramic, and the case body 17 at 1 o'clock side, 5 o'clock side, 7 o'clock side, and 11 o'clock side. A plurality of first case protective members 18 arranged on the upper surface and side surfaces located at four locations of the above, and a pair of second case protective members 19 arranged on each side of the case body 17 on the 3 o'clock side and the 9 o'clock side. And have.

As shown in FIGS. 1, 2, and 8, a watch glass 20 is attached to the upper opening of the case body 17. A back cover 21 is attached to the lower part of the case body 17. Further, each band mounting portion 15 of the case body 17 is provided with a recess 22 in which the convex portion 6 of the band piece 3 located at the end of the band 2 is arranged. As shown in FIG. 7, the case connecting holes 23 correspond to the first piece connecting holes 8 of the convex portions 6 of the band pieces 3 arranged in the recesses 22 on both side portions 22a of the concave portions 22. It is provided.

As shown in FIG. 7, the case connecting hole 23 is formed so that the inner diameter thereof is larger than the inner diameter of the first piece connecting hole 8 of the convex portion 6 of the band piece 3. As a result, the case connecting hole 23 of the band mounting portion 15 is configured such that the large diameter cylinder portion 4b of the shock absorber 4 is inserted and arranged inside the case connecting hole 23. Also in this case, the axial length of the large-diameter tubular portion 4b of the shock absorber 4 is longer than the axial length of the case connecting hole 23 provided in both side portions 22a of the recess 22 of the band mounting portion 15. It is formed.

That is, as shown in FIG. 7, the shock absorber 4 is inside the large diameter cylinder 4b when the large diameter cylinder 4b is inserted into the case connecting holes 23 of both side portions 22a in the recess 22 of the band mounting portion 15. The end portion protrudes into the concave portion 22, and the small diameter tubular portion 4a is inserted into the first piece connecting hole 8 of the convex portion 6 of the band piece 3, and the stepped portion 4c is pressed against the side surface of the convex portion 6 of the band piece 3. In this state, the outer end portion of the large diameter tubular portion 4b is configured to project to the outer side of both side portions 22a in the recess 22 of the band mounting portion 15.

As a result, as shown in FIG. 7, in the shock absorber 4, the inner end portion of the large diameter cylinder portion 4b protrudes into the concave portion 22, and the stepped portion 4c is pressed against the side surface of the convex portion 6 of the band piece 3. At that time, with a gap provided between the convex portion 6 of the band piece 3 and the concave portion 22 of the band mounting portion 15, the convex portion 6 of the band piece 3 and both side portions 22a of the concave portion 22 of the band mounting portion 15 are separated from each other. It is configured to be temporarily fixed.

Further, as shown in FIGS. 7 and 8, the shock absorber 4 rotates the convex portion 6 of the band piece 3 and both side portions 22a of the concave portion 22 of the band mounting portion 15 by inserting the connecting pin 5. It is configured to connect in the possible state. That is, like the band piece 3, the connecting pin 5 has an outer diameter substantially the same as the inner diameter of the shock absorber 4, and the axial length is the outer end surface of the concave portion 22 of the band mounting portion 15 on both side portions 22a. It is formed a little longer than its length.

As a result, as shown in FIGS. 7 and 8, the connecting pin 5 has a pair of shock absorbers 4 inserted into the case connecting hole 23 of the band mounting portion 15 and the first piece connecting hole 8 of the band piece 3. When inserted into the pair of shock absorbers 4, both ends of the connecting pin 5 are arranged in both ends of the pair of shock absorbers 4.

Further, as shown in FIGS. 7 and 8, when both ends of the connecting pin 5 are arranged in both ends of the pair of shock absorbers 4, the connecting pin 5 is banded with both side portions 22a of the recess 22 of the band mounting portion 15. The convex portion 6 of the band piece 3 is rotatably connected to both side portions 22a of the concave portion 22 of the band mounting portion 15 without coming into contact with the convex portion 6 of the piece 3.

On the other hand, as shown in FIGS. 1, 2 and 8, the first and second case protection members 18 and 19 are made of a light and highly rigid material such as carbon resin, like the band protection member 10. .. The pair of second case protection members 19 extends from one side of the band mounting portion 15 located on the 12 o'clock side of the case body 17 to one side of the band mounting portion 15 located on the 6 o'clock side of the case body 17. , The case body 17 is configured to be arranged on both sides of the 3 o'clock side and the 9 o'clock side, respectively.

In this case, as shown in FIG. 8, the second case protection member 19 located on the 3 o'clock side is the side portion of the case body 17 on the 3 o'clock side by the screw 24 (see FIG. 2) located at 3 o'clock. It is attached to. Through holes (not shown) are provided on the 2 o'clock side and the 4 o'clock side of the second case protection member 19 on the 3 o'clock side, respectively, with respect to the switch portion 16.

Similarly, as shown in FIG. 8, the second case protective member 19 located on the 9 o'clock side has a side portion of the case body 17 on the 9 o'clock side by a screw 24 (see FIG. 2) located at 9 o'clock. It is attached to. Through holes (not shown) are provided on the 8 o'clock side and the 10 o'clock side of the second case protection member 19 on the 9 o'clock side, respectively, with respect to the switch portion 16.

Further, as shown in FIGS. 7 and 8, the pair of second case protective members 19 has a locking hole 25 into which each end of the pair of shock absorbers 4 protruding from both sides of the band mounting portion 15 is inserted. Are provided respectively. These locking holes 25 are in a state where the second case protection member 19 is attached to the side portion of the band attachment portion 15 by the screw 24 because the end portion of the large diameter cylinder portion 4b of the shock absorber 4 is inserted. The second case protective member 19 is configured so as not to rotate around the screw 24.

Next, the operation of the band 2 in such a wristwatch will be described.
When assembling this band 2, first, the convex portion 6 of the band piece 3 is arranged in the concave portion 7 of the other band piece 3, and each of the first piece connecting hole 8 of the convex portion 6 and both side portions 7a of the concave portion 7. The second piece connecting hole 9 is made to correspond on the same axis. In this state, the shock absorber 4 is inserted into each of the second piece connecting holes 9 of both side portions 7a of the recess 7.

At this time, the inner end portion of the large-diameter cylinder portion 4b of the shock absorber 4 is projected into the recess 7 from the second piece connecting hole 9 of both side portions 7a of the recess 7. Then, the small-diameter cylinder portion 4a of the shock absorber 4 is inserted into the first piece connecting hole 8 of the convex portion 6, and the stepped portion 4c of the shock absorber 4 is pressed against the side surface of the convex portion 6. At this time, the large-diameter cylinder portion 4b of the shock absorber 4 is fitted into the second piece connecting hole 9 of both side portions 7a of the recess 7, and the outer end portion of the large-diameter cylinder portion 4b is external from both side portions 7a of the recess 7. Protruding into.

In this state, a slight gap is provided between both side surfaces of the convex portion 6 and both side surfaces in the concave portion 7 facing the convex portion 6 by the stepped portion 4c of the shock absorber 4, and the tip surface of the convex portion 6 and this. A slight gap is also provided between the concave portion 7 and the inner end surface corresponding to the above. Therefore, the convex portion 6 and both side portions 7a of the concave portion 7 are temporarily fixed by the shock absorber 4 without contacting the convex portion 6 and the concave portion 7.

Then, the connecting pins 5 are inserted into the pair of buffer cylinders 4, and both ends of the connecting pins 5 are arranged in the ends of the large-diameter cylinders 4b of the pair of buffer cylinders 4. In this state, the metal connecting pin 5 is arranged without contacting the convex portion 6 and the both side portions 7a of the concave portion 7. As a result, the convex portion 6 of the band piece 3 and the both side portions 7a of the concave portion 7 of the other band piece 3 adjacent thereto are connected to the band piece 3 in a rotatable state by the connecting pin 5. Another adjacent band piece 3 is connected. In this way, the plurality of band pieces 3 are sequentially connected.

Then, a pair of band protection members 10 are arranged on both sides of each of the plurality of band pieces 3 and attached by the screw members 11. At this time, the outer end portions of the shock absorber 4 protruding from both side portions 7a of the recess 7 are inserted into the locking holes 10b provided on the facing surfaces of the band protection member 10, and the counterbore holes 10a of the band protection member 10 are inserted. Corresponds to the mounting hole 14 of the band piece 3 on the same axis.

In this state, the shaft portion 12b of the female screw portion 12 of the screw member 11 is inserted into the mounting hole 14 of the band piece 3 from the counterbore hole 10a of one of the band protection members 10. Then, the screw portion 13b of the male screw portion 13 is inserted into the mounting hole 14 of the band piece 3 from the counterbore hole 10a of the other band protection member 10, and the screw hole provided at the end of the shaft portion 12b of the female screw portion 12. It is screwed into 12c, and in this state, the female screw portion 12 and the male screw portion 13 are tightened.

Then, the head portion 12a of the female screw portion 12 and the head portion 13a of the male screw portion 13 are arranged in the counterbore holes 10a of the pair of band protection members 10, and the pair of band protection members 10 are provided on both sides of the band piece 3. It is pressed and fixed. In this state, since the outer end portion of the shock absorber 4 is inserted into the locking hole 10b of the band protection member 10, the band protection member 10 does not rotate around the screw member 11. As a result, the band 2 is assembled.

When attaching the band 2 to the wristwatch case 1, first, the convex portion 6 of the band piece 3 located at one end of the band 2 is arranged in the concave portion 22 of the band attaching portion 15 of the case main body 17. At this time, the first piece connecting hole 8 provided in the convex portion 6 of the band piece 3 and the case connecting hole 23 provided in both side portions 22a of the concave portion 22 of the band mounting portion 15 are made to correspond on the same axis.

In this state, the shock absorber 4 is inserted into each of the case connecting holes 23 provided in both side portions 22a of the recess 22 of the band mounting portion 15. At this time, the inner end portion of the large diameter cylinder portion 4b of the shock absorber 4 is projected from the case connecting hole 23 in both side portions 22a of the recess 22 of the band mounting portion 15 into the recess 22 of the band mounting portion 15.

Then, the small-diameter cylinder portion 4a of the shock absorber 4 is inserted into the first piece connecting hole 8 of the convex portion 6 of the band piece 3, and the stepped portion 4c of the shock absorber 4 is pressed against the side surface of the convex portion 6. At this time, the large-diameter cylinder portion 4b of the shock absorber 4 is fitted into the case connecting hole 23 of both side portions 22a of the recess 22 of the band mounting portion 15, and the outer end portions of the large-diameter cylinder portion 4b are both side portions of the recess 22. It projects outward from 22a.

In this state, both side surfaces of the convex portion 6 of the band piece 3 and both side surfaces in the concave portion 22 of the band mounting portion 15 facing the convex portion 6 are arranged in a non-contact state with a gap by the stepped portion 4c of the shock absorber 4. At the same time, a slight gap is provided between the tip surface of the convex portion 6 and the inner end surface in the concave portion 22 corresponding to the tip surface. Therefore, the convex portion 6 and the concave portion 22 do not come into contact with each other, and the convex portion 6 of the band piece 3 and both side portions 22a of the concave portion 22 of the band mounting portion 15 are temporarily fixed by the shock absorber 4.

In this state, the connecting pins 5 are inserted into the pair of buffer cylinders 4, and both ends of the connecting pins 5 are arranged in the ends of the large-diameter cylinders 4b of the pair of buffer cylinders 4. In this state, the metal connecting pin 5 is arranged without contacting the convex portion 6 of the band piece 3 and the both side portions 22a of the concave portion 22 of the band mounting portion 15. As a result, the convex portion 6 of the band piece 3 and the both side portions 22a of the concave portion 22 of the band mounting portion 15 are rotatably connected by the connecting pin 5, so that the band piece 3 is connected to the band mounting portion 15 of the case body 17. It is connected in a rotatable state.

Then, a pair of second case protection members 19 are arranged on each side of the case body 17 on the 3 o'clock side and the 9 o'clock side, and attached by screws 24. At this time, each end of the pair of shock absorbers 4 protruding from both sides of the band mounting portion 15 is inserted into each of the locking holes 25 provided in the pair of second case protection members 19, respectively, and the pair of second cases is inserted. Case protection members 19 are arranged on both sides of the band mounting portion 15.

In this state, the pair of second case protection members 19 are attached to the 3 o'clock side and the 9 o'clock side of the case body 17 by the screws 24. At this time, since the end portion of the shock absorber 4 is inserted into the locking hole 25 of the second case protection member 19, the second case protection member 19 is attached to the side portion of the band attachment portion 15 by the screw 24. In this state, the second case protective member 19 does not rotate around the screw 24.

In the band 2 of the wristwatch assembled in this way, the band piece 3 is made of a hard brittle material such as sapphire, glass, or ceramic, so that it can be colored, so that it is highly decorative and colorful. Since the band piece 3 is exposed except for the band protection member 10, it is possible to obtain a product having excellent design and high commercial value.

Further, in the band 2 of this wristwatch, even if the band piece 3 is made of a hard brittle material such as sapphire, glass, or ceramic, the convex portion 6 of the band piece 3 and the concave portion 7 of another band piece 3 adjacent thereto Since the sapphire is arranged in a non-contact state with a slight gap by the stepped portion 4c of the shock absorber 4, the convex portion 6 of the band piece 3 and the other adjacent portion 6 are adjacent to the convex portion 6 of the band piece 3 when an impact is received due to a drop or the like. The recess 7 of the band piece 3 does not come into contact with each other. Therefore, it is possible to prevent damage between the convex portion 6 of the band piece 3 and the concave portion 7 of another band piece 3 adjacent thereto due to the impact.

In this case, the metal connecting pin 5 that connects the convex portion 6 of the band piece 3 and the concave portion 7 of the band piece 3 adjacent thereto is adjacent to the first piece connecting hole 8 of the convex portion 6 of the band piece 3. The convex portion 6 of the band piece 3 and another band piece 3 adjacent thereto are inserted into the shock absorber 4 inserted into the second piece connecting hole 9 of both side portions 7a of the concave portion 7 of the other band piece 3. Since it is arranged without contacting the concave portion 7 of the band piece 7, when the band 2 receives an impact due to dropping or the like, both sides of the convex portion 6 of the band piece 3 and the concave portion 7 of another band piece 3 adjacent thereto The portion 7a and the portion 7a are not damaged by the connecting pin 5.

Further, since the band protection member 10 made of a light and highly rigid material such as carbon resin is attached to the side portion of the band piece 3, even if the side portion of the band piece 3 receives an impact due to dropping or the like, the band protection member 10 is attached. Since the impact can be received by the band protection member 10, the edge of the side portion of the band piece 3 does not crack or chip, and the band protection member 10 reliably and satisfactorily protects the side portion of the band piece 3. can do. Further, even in the longitudinal direction of the band 2, the band protection member 10 and the band protection member 10 come into contact with each other, so that the band piece 3 and the band piece 3 do not come into contact with each other and are not damaged.

On the other hand, in the wristwatch case 1 to which the band 2 is attached, even if the case body 17 and the band attachment portion 15 are made of a hard brittle material such as sapphire, glass, or ceramic, the convex portion 6 and the band attachment portion of the band piece 3 are formed. Since the concave portion 22 of the 15 is arranged in a non-contact state with a slight gap by the stepped portion 4c of the shock absorber 4, the convex portion 6 of the band piece 3 and the band are arranged when an impact such as a drop is received. The recess 22 of the mounting portion 15 does not come into contact with each other. Therefore, it is possible to prevent damage between the convex portion 6 of the band piece 3 and the concave portion 22 of the band mounting portion 15 due to an impact.

In this case, the metal connecting pin 5 that connects the convex portion 6 of the band piece 3 and the concave portion 22 of the band mounting portion 15 is formed in the first piece connecting hole 8 and the band mounting portion 15 of the convex portion 6 of the band piece 3. It is inserted into the shock absorber 4 inserted into the case connecting hole 23 of both side portions 22a of the concave portion 22, and is arranged without contacting the convex portion 6 of the band piece 3 and the concave portion 22 of the band mounting portion 15. .. Therefore, when the band 2 receives an impact due to dropping or the like, the convex portion 6 of the band piece 3 and the both side portions 22a of the concave portion 22 of the band mounting portion 15 are not damaged by the connecting pin 5.

Further, since the second case protective member 19 made of a light and highly rigid material such as carbon resin is attached to the side portion of the band attachment portion 15, the side portion of the band attachment portion 15 receives an impact due to dropping or the like. However, the impact can be received by the second case protective member 19. Therefore, the edge portion of the band mounting portion 15 is not cracked or chipped, and the side portion of the band mounting portion 15 can be reliably and satisfactorily protected by the second case protection member 19.

In this case, since the second case protective member 19 is arranged on the 3 o'clock side and the 9 o'clock side of the case body 17, even when the case body 17 receives an impact from the side, the impact is second. It can be received by the case protection member 19. Therefore, the side portion of the case body 17 is not cracked or chipped, and the side portion of the case body 17 can be reliably and satisfactorily protected by the second case protection member 19.

As described above, according to the band 2 of this wristwatch, a plurality of band pieces 3 made of brittle material are provided with a convex portion 6 at one end and a concave portion 7 having a size corresponding to the convex portion 6 at the other end. And the first piece connecting hole 8 provided in the convex portion 6 of these band pieces 3 and the second piece connecting hole provided in both side portions 7a of the concave portion 7 of the other band piece 3 in which the convex portion 6 is arranged. A cushioning cylinder 4 that is inserted into the cushioning cylinder 4 to fix the convex portion 6 of the band piece 3 and the concave portion 7 of the other band piece 3 in a non-contact state, and the band piece 3 and others inserted into the buffer cylinder 4 By providing the connecting pin 5 for connecting the band piece 3 to the band piece 3, even if the band piece 3 is made of a brittle material, the band piece 3 can be prevented from being damaged by an impact.

That is, in the band 2 of this wristwatch, the convex portion 6 of the band piece 3 and the concave portion 7 of the other band piece 3 are arranged without contact by the shock absorber 4, so that the band piece 3 is formed of a brittle material. However, when the band piece 3 receives an impact such as a drop, the impact causes damage due to mutual contact between the convex portion 6 of the band piece 3 and the concave portion 7 of another band piece 3 reliably and satisfactorily. Can be prevented.

Further, in the band 2 of this wristwatch, the connecting pin 5 is inserted into the shock absorber 4 to connect the convex portion 6 of the band piece 3 and the both side portions 7a of the concave portion 7 of the other band piece 3. Even if the piece 3 is made of a brittle material, when the band piece 3 receives an impact such as dropping, the connecting pin 5 causes the connecting pin 5 to both sides of the convex portion 6 of the band piece 3 and the concave portion 7 of the other band piece 3. Since it does not come into contact with the portion 7a, damage to both side portions 7a of the convex portion 6 of the band piece 3 and the concave portion 7 of the other band piece 3 by the connecting pin 5 can be reliably and satisfactorily prevented.

In this case, in the band 2 of this wristwatch, the inner diameter of the first piece connecting hole 8 of the band piece 3 and the inner diameter of the second piece connecting hole 9 of the other band piece 3 are different. Since the stepped portion 4c for preventing the convex portion 6 and the concave portion 7 from coming into contact with each other is provided at the boundary portion between the connecting hole 8 and the second piece connecting hole 9, the shock absorber 4 is the first piece of the convex portion 6. When inserted into the connecting hole 8 and the second piece connecting hole 9 of both side portions 7a of the concave portion 7, a slight gap is surely provided between the convex portion 6 and the concave portion 7 by the stepped portion 4c of the shock absorber 4. be able to.

That is, in the band 2 of this wristwatch, the inner diameter of the first piece connecting hole 8 of the band piece 3 is formed to be smaller than the inner diameter of the second piece connecting hole 9 of the other band piece 3, and the shock absorber 4 is the first piece. A small-diameter cylinder 4a to be inserted into the connecting hole 8, a large-diameter cylinder 4b to be inserted into the second piece connecting hole 9, and a stepped portion 4c provided at the boundary between the small-diameter cylinder 4a and the large-diameter cylinder 4b. When the large-diameter cylinder portion 4b of the buffer cylinder 4 is inserted into the second piece connecting hole 9 and the small-diameter cylinder portion 4a of the buffer cylinder 4 is inserted into the first piece connecting hole 8, the buffer is buffered. The stepped portion 4c of the cylinder 4 can be reliably pressed against the side portion of the convex portion 6 of the band piece 3.

Therefore, in the band 2 of this wristwatch, a slight gap can be surely provided between the convex portion 6 and the concave portion 7 by the stepped portion 4c of the shock absorber 4, so that the band piece 3 receives an impact such as dropping. At that time, since the convex portion 6 of the band piece 3 and the both side portions 7a of the concave portion 7 of the other band piece 3 do not come into contact with each other due to the impact, the convex portion 6 of the band piece 3 and the other It is possible to reliably and satisfactorily prevent damage to both side portions 7a of the recess 7 of the band piece 3.

Further, in the band 2 of this wristwatch, a pair of band protection members 10 are attached to both side portions of the band piece 3, so that when the band piece 3 receives an impact such as a drop from the side, the impact is received. Since it can be received by the pair of band protection members 10, it is possible to reliably and satisfactorily prevent cracks and chips on both sides of the band piece 3.

In this case, the pair of band protection members 10 are each provided with a counterbore hole 10a into which the screw member 11 is inserted, and a mounting hole in which the female screw portion 12 of the screw member 11 is provided in the band piece 3 through one counterbore hole 10a. The band is inserted into the 14 and the male screw portion 13 of the screw member 11 is inserted into the mounting hole 14 of the band piece 3 through the other counterbore hole 10a and screwed into the screw hole 12c of the shaft portion 12b of the female screw portion 12. The band protection members 10 can be securely and satisfactorily attached to both sides of the piece 3.

That is, the counterbore 10a of the band protection member 10 has a large diameter portion in which the head portion 12a of the female screw portion 12 and the head portion 13a of the male screw portion 13 are arranged, and the shaft portion 12b and the male screw portion 13 of the female screw portion 12. A small diameter portion into which the threaded portion 13b is inserted is provided, and since the inner diameter of this small diameter portion is smaller than the inner diameter of the mounting hole 14 of the band piece 3, the shaft portion 12b and the male screw of the female screw portion 12 inserted into the mounting hole 14 are provided. It is possible to prevent the threaded portion 13b of the portion 13 from coming into contact with the band piece 3.

Therefore, in this band 2, even if the band piece 3 is made of a brittle material, the screw member 11 does not come into contact with the band piece 3, so that when the band piece 3 receives an impact such as a drop, the screw member 11 does not come into contact with the band piece 3. Since the screw member 11 does not come into contact with the band piece 3 due to the impact, damage to the band piece 3 by the screw member 11 can be reliably and satisfactorily prevented.

As described above, in the band 2 of this wristwatch, the band piece 3 is not damaged by the impact, so that the band piece 3 can be formed of a hard brittle material such as sapphire, glass, or ceramic to be colored. As a result, it is possible to enhance the decorativeness and color, and to provide a product having high design and high commercial value.

Further, according to the band 2 of this wristwatch, a band piece 3 of a brittle material having a convex portion 6 at one end and a brittle material having a concave portion 22 in which the convex portion 6 of the band piece 3 is arranged. The band is inserted into the band mounting portion 15, the first piece connecting hole 8 provided in the convex portion 6 of the band piece 3, and the case connecting hole 23 provided in both side portions 22a of the concave portion 22 of the band mounting portion 15, and the band is inserted. A shock absorber 4 that fixes the convex portion 6 of the piece 3 and the concave portion 22 of the band mounting portion 15 in a non-contact state, and a connecting pin that is inserted into the buffer cylinder 4 to connect the band piece 3 and the band mounting portion 15. Even if the band piece 3 and the band mounting portion 15 are made of a brittle material, the band piece 3 and the band mounting portion 15 can be prevented from being damaged by an impact.

That is, in the band 2 of this wristwatch, the convex portion 6 of the band piece 3 and the concave portion 22 of the band mounting portion 15 are arranged without contact by the shock absorber 4, so that the band piece 3 and the band mounting portion 15 are brittle. Even if it is formed of a material, damage due to mutual contact between the convex portion 6 of the band piece 3 and the concave portion 22 of the band mounting portion 15 due to an impact such as dropping can be reliably and satisfactorily prevented.

Further, in the band 2 of this wristwatch, the connecting pin 5 is inserted inside the shock absorber 4 to connect the convex portion 6 of the band piece 3 and the both side portions 22a of the concave portion 22 of the band mounting portion 15. Even if the piece 3 and the band mounting portion 15 are formed of a brittle material, the connecting pin 5 may come into contact with the convex portion 6 of the band piece 3 and both side portions 22a of the concave portion 22 of the band mounting portion 15 due to an impact such as dropping. Therefore, it is possible to reliably and satisfactorily prevent damage between the convex portion 6 of the band piece 3 and the both side portions 22a of the concave portion 22 of the band mounting portion 15 due to the connecting pin 5.

In this case, in the band 2 of this wristwatch, the inner diameter of the first piece connecting hole 8 of the band piece 3 and the inner diameter of the case connecting hole 23 of the band mounting portion 15 are different, and in the shock absorber 4, the first piece connecting hole 8 is used. By providing a stepped portion 4c at the boundary between the case and the case connecting hole 23 to prevent contact between the convex portion 6 of the band piece 3 and the concave portion 22 of the band mounting portion 15, the shock absorber 4 becomes the band piece 3. When inserted into the first piece connecting hole 8 of the convex portion 6 and the case connecting hole 23 of both side portions 22a of the concave portion 22 of the band mounting portion 15, the convex portion 6 and the concave portion 22 are provided by the stepped portion 4c of the shock absorber 4. A slight gap can be reliably provided between the and.

That is, in the band 2 of this wristwatch, the inner diameter of the first piece connecting hole 8 of the band piece 3 is formed to be smaller than the inner diameter of the case connecting hole 23 of the band mounting portion 15, and the shock absorber 4 is formed in the first piece connecting hole 8. It is provided with a small-diameter cylinder portion 4a to be inserted into, a large-diameter cylinder portion 4b to be inserted into the case connecting hole 23, and a stepped portion 4c provided at a boundary between the small-diameter cylinder portion 4a and the large-diameter cylinder portion 4b. As a result, when the large diameter cylinder portion 4b of the shock absorber 4 is inserted into the case connecting hole 23 and the small diameter cylinder portion 4a of the shock absorber 4 is inserted into the first piece connecting hole 8, the stepped portion 4c of the cushioning cylinder 4 is inserted. It can be reliably pressed against the side portion of the convex portion 6 of the band piece 3.

Therefore, in the band 2 of this wristwatch, a slight gap can be surely provided between the convex portion 6 of the band piece 3 and the concave portion 22 of the band mounting portion 15 by the stepped portion 4c of the shock absorber 4, so that the wristwatch can be dropped. Since the convex portion 6 of the band piece 3 and the both side portions 22a of the concave portion 22 of the band mounting portion 15 do not come into contact with each other due to an impact such as, the convex portion 6 of the band piece 3 and the concave portion of the band mounting portion 15 due to the impact. Damage to both side portions 22a of 22 can be reliably and satisfactorily prevented.

Further, in the band 2 of this wristwatch, a pair of second case protection members 19 are attached to both side portions of the band attachment portion 15, so that when the band attachment portion 15 receives an impact such as a drop from the side. Since the impact can be received by the pair of second case protection members 19, cracks and chips on both sides of the band mounting portion 15 can be reliably and satisfactorily prevented.

As described above, in the band 2 of this wristwatch, the band mounting portion 15 is not damaged by the impact, so that the band mounting portion 15 and the case body 17 are integrally formed of a hard brittle material such as sapphire, glass, or ceramic. In addition to being able to colorize the band mounting portion 15 and the case body 17, it is possible to enhance the decorativeness and colorability, and to provide a product with high design and high commercial value. Can be done.

In the first embodiment described above, the case where the connecting pin 5 has a simple rod shape has been described, but the present invention is not limited to this, and the connecting screw member is not limited to this, for example, as in the modified example shown in FIG. 30 may be used. That is, the shock absorber 4 of the modified example shown in FIG. 9 has a structure in which a counterbore hole 4d is provided at an end portion located on the outer side of the band piece 3.

As shown in FIG. 9, the connecting screw member 30 includes a female screw portion 31 and a male screw portion 32. The female screw portion 31 includes a head portion 31a, a shaft portion 31b, and a screw hole 31c provided at an end portion of the shaft portion 31b. The female screw portion 31 is arranged with the head portion 31a inserted into the counterbore hole 4d of one of the buffer cylinders 4, and the shaft portion 31b is connected to the first piece of the convex portion 6 of the band piece 3 through the cushioning cylinder 4. It is configured to be inserted into the hole 8.

As shown in FIG. 9, the male threaded portion 32 includes a head portion 32a and a threaded portion 32b. The male screw portion 32 is arranged with the head portion 32a inserted into the counterbore hole 4d of the other buffer cylinder 4, and the screw portion 32b is connected to the first piece of the convex portion 6 of the band piece 3 through the cushion cylinder 4. It is inserted into the hole 8 and is configured to be screwed into the screw hole 31c provided at the end of the shaft portion 31b of the female screw portion 31.

As a result, as shown in FIG. 9, in the connecting screw member 30, the shaft portion 31b of the female screw portion 31 changes from the counterbore hole 4d of one of the buffer cylinders 4 to the first piece connecting hole 8 of the convex portion 6 of the band piece 3. After being inserted, the threaded portion 32b of the male threaded portion 32 is inserted from the counterbore hole 4d of the other buffer cylinder 4 into the first piece connecting hole 8 of the convex portion 6 of the band piece 3, and the shaft portion 31b of the female threaded portion 31 is inserted. When screwed into the screw hole 31c of the above, the female screw portion 31 and the male screw portion 32 are configured so as not to come into contact with the band piece 3.

Therefore, in this band 2, the head portion 31a of the female screw portion 31 and the head of the male screw portion 32 are tightened by screwing the screw portion 32b of the male screw portion 32 into the screw hole 31c of the shaft portion 31b of the female screw portion 31. Since the pair of buffer cylinders 4 can be sandwiched in the axial direction by the portions 32a, the stepped portions 4c of the pair of buffer cylinders 4 can be reliably and satisfactorily pressed against both side surfaces of the convex portions 6 of the band piece 3. This makes it possible to reliably provide a gap between the convex portion 6 of the band piece 3 and the concave portion 7 of another band piece 3 adjacent thereto. As shown in FIG. 9, when the connecting screw member 30 is used, the same configuration can be made in connecting the convex portion 6 of the band piece 3 and the concave portion 22 of the band mounting portion 15.

Further, in the first embodiment described above, the stepped portion 4c of the shock absorber ensures a gap between the convex portion 6 of the band piece 3 and the concave portion 7 of the other band piece 3 or the concave portion 22 of the band mounting portion 15. For example, an O-ring or washer shape formed of an elastic body is provided by providing a notch such as a groove in the recess 7 of another band piece 3 or the recess 22 of the band mounting portion 15. The cushioning member may be arranged, the cushioning cylinder 4 may be inserted, and the cushioning member may be arranged on the outer peripheral portion of the cushioning cylinder 4.

By providing a cushioning member in addition to the stepped portion 4c of the shock absorber 4, when an impact is received from the outside such as a drop, the convex portion 6 of the band piece 3 and the concave portion 7 or the band mounting portion 15 of the other band piece 3 The recesses 22 do not come into contact with each other, a gap can be provided more reliably, and damage can be prevented.

Further, the cushioning member may be arranged by providing a notch such as a groove in the convex portion 6 of the band piece 3. When an O-ring made of an elastic body or a washer-shaped cushioning member is provided, the inner diameters of the first piece connecting hole 8 and the second piece connecting hole 9 or the case connecting hole 23 are the same, and the cushioning cylinder 4 is provided. May be configured by a cylinder portion having the same diameter without providing a step portion 4c provided at a boundary portion between the small diameter cylinder portion 4a and the large diameter cylinder portion 4b.

(Second Embodiment)
Next, a second embodiment in which the present invention is applied to a wristwatch band will be described with reference to FIGS. 10 to 12. The same parts as those of the first embodiment shown in FIGS. 1 to 8 will be described with the same reference numerals.
As shown in FIGS. 10 and 11, the band 2 of this wristwatch has a pair of cushioning members 35 for preventing contact between the convex portion 6 of the band piece 3 and the concave portion 7 of another band piece 3 adjacent thereto. The structure is different from that of the first embodiment, and other than that, the structure is almost the same as that of the first embodiment.

That is, as shown in FIGS. 10 and 11, each of the pair of cushioning members 35 is arranged between the side surface of the convex portion 6 of the band piece 3 and the inner surface surface of the concave portion 7 of the other band piece 3 adjacent thereto. It is provided with a first cushioning portion 36 to be formed, and a tubular second cushioning portion 37 inserted into a second piece connecting hole 9 provided in both side portions 7a of the recess 7 and into which a connecting pin 5 is inserted. .. The cushioning member 35 is made of a light and highly rigid material such as carbon resin or reinforced plastic, and the first cushioning portion 36 and the second cushioning portion 37 are integrally formed.

In this case, the second piece connecting holes 9 provided on both side portions 7a of the concave portions 7 of the band piece 3 are formed from the first piece connecting holes 8 provided on the convex portions 6 of the band piece 3 as in the first embodiment. Also has a large inner diameter. As shown in FIGS. 11 and 12, the first cushioning portion 36 is formed in a washer shape, and is one end of a cylindrical second cushioning portion 37, that is, an inner end located on the inner side of the recess 7 of the band piece 3. It is provided in the section. The first buffer portion 36 is formed so that the outer diameter is larger than the inner diameter of the second piece connecting hole 9 of the recess 7 of the band piece 3 and smaller than the thickness of the band piece 3.

As shown in FIGS. 11 and 12, the second buffer portion 37 has an outer diameter substantially the same as the inner diameter of the second piece connecting hole 9 provided on both side portions 7a of the recess 7 of the band piece 3, and has an inner diameter. Is formed to have substantially the same size as the inner diameter of the first piece connecting hole 8 of the convex portion 6 of the band piece 3. Further, the length of the second buffer portion 37 in the axial direction is formed to be slightly shorter than the length in the axial direction of the second piece connecting hole 9 of the recess 7 of the band piece 3.

As a result, as shown in FIGS. 11 and 12, the pair of cushioning members 35 have the second cushioning portion 37 from the inside of the recess 7 of the band piece 3 to the inside of the second piece connecting hole 9 of the recess 7 of the band piece 3. The first buffer portion 36 is configured to come into contact with each inner side surface in the recess 7 of the band piece 3 when each is inserted into the band piece 3. In this case, in each of the pair of cushioning members 35, the outer end portion of the second cushioning portion 37 on the opposite side of the first cushioning portion 36 does not protrude to the outside from the second piece connecting hole 9, and the second piece is connected. It is configured to be arranged in the hole 9.

By the way, as shown in FIG. 11, the connecting pin 5 for connecting the band pieces 3 to each other is a metal rod-shaped member, and a shock absorber 38 is provided on the outer periphery thereof, and together with the shock absorber 38, the recess 7 of the band piece 3 is provided. By being inserted into the second buffer portion 37 of the cushioning member 35 inserted into the second piece connecting hole 9 and into the first piece connecting hole 8 of the convex portion 6 of the band piece 3, the connecting pin 5 is the center. The band pieces 3 are configured to be connected to each other in a rotatable state.

In this case, the shock absorber 38 is formed of an elastic soft synthetic resin such as silicone rubber, as in the first embodiment. As shown in FIG. 11, the shock absorber 38 has an inner diameter of the same size as the outer diameter of the connecting pin 5, and the outer diameter is the inner diameter of the first piece connecting hole 8 of the convex portion 6 of the band piece 3 and the cushioning member. It is formed to have the same size as the inner diameter of the second buffer portion 37 of 35.

On the other hand, as shown in FIG. 11, the connecting pin 5 has an outer diameter the same as the inner diameter of the shock absorber 38, and the axial length is orthogonal to the connecting direction of the band piece 3 in the width direction of the band piece 3. It is formed a little longer than the length of. As a result, the connecting pin 5 has the inside of the second cushioning portion 37 of the cushioning member 35 inserted into the second piece connecting hole 9 of the concave portion 7 of the band piece 3 and the first piece connecting hole 8 of the convex portion 6 of the band piece 3. When inserted into and out of the band piece 3, it is configured to project to both sides of the band piece 3 and be inserted into each of the locking holes 10b of the pair of band protection members 10.

In this case, as shown in FIG. 11, the shock absorber 38 has a length in the axial direction shorter than the length in the axial direction of the connecting pin 5, and a length slightly shorter than the length in the width direction of the band piece 3. It is formed by the length. As a result, when the shock absorber 38 is mounted on the outer periphery of the connecting pin 5, both ends of the connecting pin 5 are configured to protrude from both ends of the shock absorber 38.

Further, as shown in FIG. 11, the shock absorber 38 is the second cushion member 35 inserted into the second piece connecting hole 9 of the recess 7 of the band piece 3 in a state of being mounted on the outer periphery of the connecting pin 5. When inserted into the buffer portion 37 and the first piece connecting hole 8 of the convex portion 6 of the band piece 3, both ends of the buffer cylinder 38 are inserted into the second piece connecting hole 9 of the recess 7 of the band piece 3. It is configured to be substantially at the same position as each outer end portion of each second cushioning portion 37 of the cushioning member 35.

By the way, the pair of band protection members 10 are attached to both side portions of the band piece 3 by screw members 11 as in the first embodiment. That is, as shown in FIG. 6, these pair of band protection members 10 are connected so as to project from both side portions 7a of the recess 7 of the band piece 3 when they are attached to both side portions of the band piece 3 by the screw member 11. By inserting each end of the pin 5 into each locking hole 10b, the pair of band protection members 10 are configured not to rotate around the screw member 11.

Next, the operation of the band 2 of the wristwatch in such a second embodiment will be described.
When assembling the band 2, first, each of the second cushioning portions 37 of the pair of cushioning members 35 is inserted into the second piece connecting holes 9 provided in both side portions 7a of the recesses 7 of the band piece 3. That is, the cylindrical second cushioning portion 37 is inserted into the second piece connecting hole 9 of the recess 7 of the band piece 3 from the inner side of the recess 7 of the band piece 3, and the first cushioning portion 36 is inserted into the band piece 3. Press against both side surfaces in the recess 7.

At this time, the outer end portions of the second buffer portion 37 inserted into the second piece connecting hole 9 of the recess 7 of the band piece 3 do not protrude from both sides of the band piece 3, and the second portion 7 of the recess 7 of the band piece 3 does not protrude. It is arranged in the piece connecting hole 9. In this state, the convex portion 6 of the other band piece 3 adjacent to the concave portion 7 of the band piece 3 is arranged in the concave portion 7. In this state, the first buffer portion 36 is sandwiched between both side surfaces in the concave portion 7 and both side surfaces of the convex portion 6 facing the concave portion 7.

Then, each second cushioning portion 37 of the pair of cushioning members 35 inserted into the second piece connecting hole 9 of the concave portion 7 of the band piece 3 and the first piece connecting hole 8 of the convex portion 6 of the band piece 3 are the same. Correspond to the axis. At this time, the tip surface of the convex portion 6 and the corresponding concave portion 7 are sandwiched between both side surfaces in the concave portion 7 and both side surfaces of the convex portion 6 facing the concave portion 6. A slight gap is provided between the inner end surface and the inner end surface. Therefore, the concave portion 7 of the band piece 3 and the convex portion 6 of the other band piece 3 adjacent thereto do not come into contact with each other.

In this state, the connecting pin 5 is inserted together with the cushioning cylinder 38 into each of the second cushioning portions 37 of the pair of cushioning members 35. At this time, the shock absorber 38 is attached to the outer periphery of the connecting pin 5 in advance. Then, one end of the connecting pin 5 is inserted into the second piece connecting hole 9 of the recess 7 of the band piece 3 together with the shock absorber 38 into the second cushioning portion 37 of the one cushioning member 35 from the outside of the band piece 3. The other buffer inserted into the second piece connecting hole 9 of the concave portion 7 of the band piece 3 after being inserted into the first piece connecting hole 8 of the convex portion 6 of the other adjacent band piece 3. It is inserted into the second cushioning portion 37 of the member 35 from the inside of the recess 7 of the band piece 3.

As a result, the metal connecting pin 5 is arranged by the shock absorber 38 without contacting the second piece connecting hole 9 of both side portions 7a of the concave portion 7 and the first piece connecting hole 8 of the convex portion 6. In this state, both side portions 7a of the concave portion 7 of the band piece 3 and the convex portions 6 of the other band pieces 3 adjacent thereto are connected in a rotatable state by the connecting pin 5. Therefore, the band piece 3 and another band piece 3 adjacent to the band piece 3 are connected in a rotatable state about the connecting pin 5. In this way, the plurality of band pieces 3 are sequentially connected.

Then, a pair of band protection members 10 are arranged on both side portions of the plurality of band pieces 3 and attached by the screw members 11. At this time, as in the first embodiment, both ends of the connecting pin 5 protruding from both side portions 7a of the recess 7 are inserted into the locking holes 10b provided on the facing surface of the band protection member 10, and the band protection member 10 is inserted. The counterbore hole 10a is made to correspond to the mounting hole 14 of the band piece 3 on the same axis.

In this state, the shaft portion 12b of the female screw portion 12 of the screw member 11 is inserted into the mounting hole 14 of the band piece 3 from the counterbore hole 10a of one of the band protection members 10. Then, the screw portion 13b of the male screw portion 13 is inserted into the mounting hole 14 of the band piece 3 from the counterbore hole 10a of the other band protection member 10, and the screw hole provided at the end of the shaft portion 12b of the female screw portion 12. It is screwed into 12c, and in this state, the female screw portion 12 and the male screw portion 13 are tightened.

Then, the head portion 12a of the female screw portion 12 and the head portion 13a of the male screw portion 13 are arranged in the counterbore holes 10a of the pair of band protection members 10, and the pair of band protection members 10 are provided on both sides of the band piece 3. It is pressed and fixed. In this state, since the outer end portion of the shock absorber 4 is inserted into the locking hole 10b of the band protection member 10, the band protection member 10 does not rotate around the screw member 11. As a result, the band 2 is assembled.

In the band 2 of the wristwatch assembled in this way, as in the first embodiment, the band piece 3 is made of a hard brittle material such as sapphire, glass, or ceramic, so that it can be colored and is therefore decorative. Further, since the band piece 3 having high colorability and the band piece 3 at the portion other than the band protection member 10 is exposed, a product having excellent design and high commercial value can be obtained.

Further, in the band 2 of this wristwatch, the first cushioning portion 36 of the cushioning member 35 is provided between both side surfaces of the convex portion 6 of the band piece 3 and both side surfaces in the concave portion 7 of the other band piece 3 adjacent thereto. Since the band piece 3 is arranged, even if the band piece 3 is made of a hard brittle material such as sapphire, glass, or ceramic, when it receives an impact due to dropping or the like, the convex portion 6 of the band piece 3 and the other adjacent portion 6 The recess 7 of the band piece 3 does not come into contact with each other. Therefore, it is possible to prevent damage between the convex portion 6 of the band piece 3 and the concave portion 7 of another band piece 3 adjacent thereto due to the impact.

Further, in the band 2 of this wristwatch, the second cushioning portions 37 of the cushioning member 35 are inserted into the second piece connecting holes 9 provided on both side portions 7a of the recesses 7 of the band piece 3, and these second cushioning portions 37 are inserted. Since both ends of the connecting pin 5 are inserted into the first piece connecting hole 8 provided in the convex portion 6 of the other adjacent band piece 3, the connecting pin 5 is inserted into the band piece 3. It does not come into contact with the second piece connecting hole 9 of the concave portion 7 and the first piece connecting hole 8 of the convex portion 6 of the other band piece 3 adjacent to the second piece connecting hole 9. Therefore, when the band 2 receives an impact due to dropping or the like, the convex portion 6 of the band piece 3 and the both side portions 7a of the concave portion 7 of the other band piece 3 adjacent thereto may be damaged by the connecting pin 5. not.

In this case, the metal connecting pin 5 that connects the convex portion 6 of the band piece 3 and the concave portion 7 of the band piece 3 adjacent thereto is provided with a shock absorber 38 on the outer periphery thereof, so that the band piece 3 has a cushioning tube 38. In the second cushioning portion 37 of the cushioning member 35 inserted into the second piece connecting hole 9 of both side portions 7a of the concave portion 7, and the first piece connecting hole 8 of the convex portion 6 of the other band piece 3 adjacent thereto. Even if it is inserted, it does not come into contact with the convex portion 6 of the band piece 3 and the concave portion 7 of another band piece 3 adjacent thereto.

Therefore, in the band 2 of this wristwatch, when the band 2 receives an impact due to dropping or the like, the impact can be cushioned by the shock absorber 38 provided on the outer periphery of the connecting pin 5, so that the band piece 3 can be used. The convex portion 6 and the both side portions 7a of the concave portion 7 of the other band piece 3 adjacent thereto are not damaged by the connecting pin 5.

Further, since the band protection member 10 made of a light and highly rigid material such as carbon resin is attached to the side portion of the band piece 3, the side portion of the band piece 3 is dropped due to the drop or the like as in the first embodiment. Even if an impact is received, the impact can be received by the band protection member 10, so that the edge of the side portion of the band piece 3 is not cracked or chipped, and the side portion of the band piece 3 is not cracked or chipped by the band protection member 10. Can be reliably and well protected.

As described above, according to the band 2 of the wristwatch in the second embodiment, in addition to having the same effect as that of the first embodiment, the convex portion 6 of the band piece 3 and the concave portion of the other band piece 3 adjacent thereto have the same effect. The cushioning member 35 for preventing contact with 7 is arranged between the convex portion 6 of the band piece 3 and the concave portion 7 of another band piece 3 adjacent thereto, and the first cushioning portion 36 and the second concave portion 7. By providing a tubular second cushioning portion 37 inserted into the piece connecting hole 9, the convex portion 6 of the band piece 3 and the concave portion 7 of another band piece 3 adjacent thereto are damaged by an impact. Can be prevented.

That is, in the band 2 of this wristwatch, the first cushioning portion 36 of the cushioning member 35 is between both side surfaces of the convex portion 6 of the band piece 3 and both side surfaces in the concave portion 7 of the other band piece 3 adjacent thereto. Therefore, when an impact is received due to a drop or the like, both side surfaces of the convex portion 6 of the band piece 3 and both side surfaces in the concave portion 7 of another band piece 3 adjacent to the convex portion 6 come into contact with each other. This makes it possible to reliably prevent damage between the convex portion 6 of the band piece 3 and the concave portion 7 of another band piece 3 adjacent thereto due to the impact.

Further, in the band 2 of this wristwatch, the tubular second cushioning portion 37 of the cushioning member 35 is inserted into the second piece connecting hole 9 of the recess 7, and both side portions of the connecting pin 5 are inserted in the second cushioning portion 37. Since it is inserted into the first piece connecting hole 8 of the convex portion 6 of the other adjacent band piece 3 in the inserted state, even if the connecting pin 5 is made of metal, the second portion 7 of the concave portion 7 of the band piece 3 is inserted. It does not come into contact with the first piece connecting hole 8 of the convex portion 6 of the other band piece 3 adjacent to the piece connecting hole 9. Therefore, when the band 2 receives an impact due to dropping or the like, the convex portion 6 of the band piece 3 and both side portions 7a of the concave portion 7 of the other band piece 3 adjacent thereto are not damaged by the connecting pin 5. can do.

In this case, in the band 2 of this wristwatch, the shock absorber 38 is provided on the outer periphery of the metal connecting pin 5 that connects the convex portion 6 of the band piece 3 and the concave portion 7 of the band piece 3 adjacent thereto. , The second cushioning portion 37 of the cushioning member 35 inserted into the second piece connecting hole 9 of both side portions 7a of the concave portion 7 in the band piece 3, and the first piece of the convex portion 6 of the other band piece 3 adjacent thereto. Even if the connecting pin 5 is inserted into the connecting hole 8, the convex portion 6 of the band piece 3 and the concave portion 7 of another band piece 3 adjacent thereto do not come into contact with the convex portion 6.

Therefore, in the band 2 of this wristwatch, when an impact is received due to dropping or the like, the impact can be cushioned by the shock absorber 38 provided on the outer periphery of the connecting pin 5, so that the convex portion 6 of the band piece 3 can be cushioned. And the side portions 7a of the recess 7 of the other band piece 3 adjacent thereto can be surely prevented from being damaged by the connecting pin 5.

In the second embodiment described above, the structure for connecting the band pieces 3 to each other has been described, but the present invention is not limited to this, and the band attachment of the band piece 3 and the wristwatch case 1 is not limited to this, for example, as in the first embodiment. It can also be applied to a structure for connecting the portion 15.

Further, in the second embodiment described above, the case where the connecting pin 5 has a simple rod shape has been described, but the present invention is not limited to this, and the connecting screw member is not limited to this, for example, as in the modified example shown in FIG. 30 may be used to connect the convex portion 6 of the band piece 3 and the concave portion 7 of another band piece 3 adjacent thereto.

Further, in the second embodiment described above, the case where the second cushioning portion 37 of the cushioning member 35 is inserted into the second piece connecting hole 9 provided in both side portions 7a of the recess 7 of the band piece 3 has been described. The present invention is not limited to this, for example, in a state where the first cushioning portion 36 of the cushioning member 35 is arranged between the concave portion 7 of the band piece 3 and the convex portion 6 of another band piece 3 adjacent thereto. The structure may be such that the second cushioning portion 37 is inserted into the first piece connecting hole 8 provided in the convex portion 6 of the band piece 3.

Further, in the second embodiment described above, the second cushioning portion 37 of the cushioning member 35 is provided in the second piece connecting hole 9 provided in both side portions 7a of the recess 7 of the band piece 3 and the convex portion 6 of the band piece 3. The case where the first piece connecting hole 8 is inserted into one of the first piece connecting holes 8 has been described, but the present invention is not limited to this. The second buffer portion 37 is placed between the convex portion 6 of the other adjacent band piece 3 and the first piece connecting hole 8 of the convex portion 6 of the band piece 3 and another band piece adjacent thereto. The structure may be such that it is inserted into both the recess 7 of 3 and the second piece connecting hole 0.

Further, in the second embodiment described above, the first cushioning portion 36 of the cushioning member 35 is placed between both side surfaces of the convex portion 6 of the band piece 3 and both side surfaces in the concave portion 7 of the other band piece 3 adjacent thereto. However, the present invention is not limited to this, and for example, a part of the first buffer portion 36 is formed on the tip surface of the convex portion 6 of the band piece 3 and another band piece 3 adjacent thereto. It may be extended between the inner end surface of the concave portion 7 and provided with a gap between the tip surface of the convex portion 6 and the inner end surface of the corresponding concave portion 7.

Further, in the above-mentioned second embodiment, the case where the cushioning member 35 includes the washer-shaped first buffering portion 36 and the tubular-shaped second buffering portion 37 has been described, but the present invention is not limited to this. The cushioning member 35 may have a structure including only a washer-shaped first buffering portion 36.

Further, in the first and second embodiments described above, the case where it is applied to the band 2 of the wristwatch has been described, but the present invention does not necessarily have to be the band 2 of the wristwatch, for example, a bag, a bag, a bracelet, or the like. It can also be applied to bands.

Although some embodiments of the present invention have been described above, the present invention is not limited to these, and includes the inventions described in the claims and the equivalent scope thereof.
Hereinafter, the inventions described in the claims of the present application will be added.

(Additional note)
In the invention according to claim 1, a band piece made of a brittle material having a convex portion at one end and a concave portion having a size corresponding to the convex portion at the other end, and the convex portion of the band piece are provided. The other member of the brittle material provided with the recess to be arranged, the first connecting hole provided in the convex portion of the band piece, and the second connecting hole provided in both sides of the recess of the other member. A cushioning cylinder that is inserted into the cushion cylinder to fix the convex portion of the band piece and the concave portion of the other member in a non-contact state, and is inserted into the buffer cylinder to connect the band piece and the other member. It is a band characterized by having a connecting member and a connecting member.

According to the second aspect of the present invention, in the band according to the first aspect, the inner diameter of the first connecting hole of the band piece and the inner diameter of the second connecting hole of the other member are different. It is a band characterized in that a stepped portion is provided at a boundary portion between the first connecting hole and the second connecting hole to prevent contact between the convex portion and the concave portion.

In the invention according to claim 3, in the band according to claim 1 or 2, the cushioning member for preventing contact between the convex portion of the band piece and the concave portion of the other member is the convex portion or the concave portion. It is a band characterized by being provided in.

The invention according to claim 4 is the band according to claim 3, wherein the cushioning member includes a first cushioning portion arranged between the convex portion of the band piece and the concave portion of the other member. It is characterized by comprising a tubular second cushioning portion inserted into at least one of the first connecting hole of the convex portion and the second connecting hole of the concave portion into which the connecting member is inserted. It's a band.

In the invention according to claim 5, in the band according to any one of claims 1 to 4, protective members are attached to both side portions of the band piece and both side portions of the other member. It is a band characterized by.

The invention according to claim 6 is the band according to any one of claims 1 to 5, wherein the other member is the same band piece as the band piece, and the convex portion of the band piece is adjacent to the band piece. It is a band characterized in that it is arranged and connected in the recess of the other band piece.

The invention according to claim 7 is the band according to any one of claims 1 to 5, wherein the other member is a band attachment portion of a brittle material provided in a case, and the band attachment portion of the band attachment portion. It is a band characterized in that the convex portion of the band piece is arranged and connected in the concave portion.

The invention according to claim 8 is a timepiece including the band according to any one of claims 1 to 7.

1 Wristwatch case 2 Band 3 Band piece 4, 38 Cushion tube 4a Small diameter tube 4b Large diameter tube 4c Step 5 Connecting pin 6 Convex 7, 22 Concave 7a, 22a Both sides 8 1st piece Connecting hole 9 2nd piece Connecting hole 10 Band protection member 10a Counterbore hole 10b, 25 Locking hole 11 Thread member 12, 31 Female thread 12a, 31a Head 12b, 31b Shaft 12c, 31c Thread hole 13, 32 Male thread 13a, 32a Head 13b , 32b Threaded part 14 Mounting hole 15 Band mounting part 17 Case body 19 Second case protection member 23 Case connecting hole 30 Connecting screw member 35 Cushioning member 36 First cushioning part 37 Second cushioning part

In the present invention, a band piece provided with a convex portion , another member provided with a concave portion, a first connecting hole provided in the convex portion of the band piece, and the concave portion of the other member . A band, which is inserted into a second connecting hole provided in the band piece and has a shock absorber for fixing the convex portion of the band piece and the concave portion of the other member in a non-contact state. Is.

Claims (8)

A band piece made of a brittle material having a convex portion at one end and a concave portion having a size corresponding to the convex portion at the other end.
The other member of the brittle material provided with the recess in which the convex portion of the band piece is arranged, and
The convex portion of the band piece and the other member are inserted into the first connecting hole provided in the convex portion of the band piece and the second connecting hole provided in both sides of the concave portion of the other member. With a shock absorber that fixes the recess in a non-contact state,
A connecting member inserted into the shock absorber to connect the band piece and the other member,
A band characterized by being equipped with. In the band according to claim 1, the inner diameter of the first connecting hole of the band piece and the inner diameter of the second connecting hole of the other member are different, and the shock absorber has the first connecting hole and the second connecting hole. A band characterized by being provided at a boundary portion with a connecting hole and provided with a stepped portion for preventing contact between the convex portion and the concave portion. The band according to claim 1 or 2, characterized in that a cushioning member for preventing contact between the convex portion of the band piece and the concave portion of the other member is provided in the convex portion or the concave portion. Band to do. In the band according to claim 3, the cushioning member includes a first cushioning portion arranged between the convex portion of the band piece and the concave portion of the other member, and the first connecting hole of the convex portion. A band characterized by comprising a tubular second cushioning portion inserted into at least one of the recess and the second connecting hole into which the connecting member is inserted. The band according to any one of claims 1 to 4, wherein protective members are attached to both side portions of the band piece and both side portions of the other member. In the band according to any one of claims 1 to 5, the other member is the same band piece as the band piece, and the convex portion of the band piece is in the concave portion of the other band piece adjacent to the band piece. A band characterized by being placed and connected. In the band according to any one of claims 1 to 5, the other member is a band mounting portion of a brittle material provided on the case, and the convex portion of the band piece is inserted into the concave portion of the band mounting portion. A band characterized by the arrangement and connection of parts. A timepiece comprising the band according to any one of claims 1 to 7.

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