JPH0513209Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a watch band in which a front piece is wound around a core plate to form a piece. Regarding what we can offer various bands like.

(b) Prior Art In this type of conventional watch band, the front piece is wrapped around a core plate to form a piece, and when the front piece is bent, the foot of the connecting piece, which has a substantially H-shaped planar shape, is exposed. Multiple pieces were connected by engaging inside the pieces.

(c) Problems that the invention aims to solve In the conventional watch bands mentioned above, it was necessary to connect the pieces during assembly, so finishing or plating was not applied until after the band was assembled. Therefore, it was not possible to finish the piece with a single piece.

Furthermore, when plating parts of the parts constituting the band, it is necessary to cover the parts other than the parts to be plated with a mask, which is time consuming and costly.

(d) Means for Solving the Problems The purpose of the present invention is to provide a watch band that allows finishing of individual pieces and also allows for combinations of various pieces like the Muku band.

In order to solve the above problems and achieve the purpose, the watch band of the present invention includes a back plate having a convex portion on one end surface in the longitudinal direction of the band, and a back plate joined to the back plate,
A middle plate having a length in the longitudinal direction of the band that is longer than the length of the back plate in the longitudinal direction of the band, and a bent part at the end in the longitudinal direction of the band, and the bent part is bent to connect the middle plate and the back. In order to fix the middle plate and the back plate and form a tubular part by abutting against the stepped part formed between the folded plate and the plate, and to prevent the back plate and the middle plate from shifting in the band width direction. A front piece formed by fitting a concave portion provided at an end of a curved portion with a convex portion of the back plate; a connecting pin inserted into a tubular portion of the front piece and having a circumferential groove near the end; and a ring which is wrapped around the end of the connecting pin protruding from the tubular part of the front piece and the end of the connecting pin of the adjacent piece, and is bent and attached within the circumferential groove. .

(e) Examples Examples of the present invention will be described below based on the drawings.

Fig. 1 is a partially exploded back view showing a watch band according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of the piece shown in Fig. 1, and Fig. 3 is a connecting portion between the connecting pin and ring shown in Fig. 1. FIG.

A piece 1 is composed of a back plate 2, a middle plate 3, and a front piece 4.

This back plate 2 has a convex portion 2a projecting from one end surface 2b in the band longitudinal direction, and the length of the convex portion 2a in the band longitudinal direction is set to l.

The middle plate 3 is joined to the back plate 2 by spot welding or the like, and in this embodiment, its four corners are cut off to form a concave portion in the width direction of the band to fit a ring to be described later, so as to protrude in the longitudinal direction of the band. Projecting portions 3a and 3b are formed.

In addition, the length of the middle plate 3 in the band longitudinal direction is
l+1, and when the back plate 2 and middle plate 3 are joined, a stepped portion is formed between the protrusions 3a and 3b of the back plate 2 and the middle plate 3.

The front piece 4 has a substantially cross-shaped planar shape in the unfolded state, and has bent portions 4a and 4b at the ends in the longitudinal direction of the band.
is provided.

These bent portions 4a and 4b correspond to the protruding portion 3 of the middle plate 3.
a, 3b, and its ends 4c, 4d are brought into contact with the step formed between the back plate 2 and the middle plate 3, as shown in FIG.

Thereby, the middle plate 3 and the back plate 2 are fixed without coming off in the direction of the back surface of the front piece 4.

Further, the end 4c of the bent portion 4a of the front piece 4 is provided with a recessed portion 4e that fits the convex portion 2a of the back plate 2, and when bending this bent portion 4a, the recessed portion 4e is It is fitted into the portion 2a.

Thereby, the back plate 2 and the middle plate 3 are not displaced in the band width direction within the front piece 4, and are reliably positioned.

Further, as shown in FIG. 2, the bent portions 4a, 4b are curved away from the end surfaces of the protruding portions 3a, 3b of the middle plate 3 in the band longitudinal direction. Tubular portions 4f and 4g are formed by the end surfaces in the longitudinal direction of the band and the inner surfaces of the curved portions.

5 is a connecting pin, and circumferential grooves 5c and 5d are formed near both ends 5a and 5b of the connecting pin.

This connecting pin 5 is connected to the tubular portions 4f and 4g of the front piece 4.
It is inserted into.

The length of this connecting pin 5 is set to be approximately equal to the length of the front piece 4 in the band width direction, so when it is inserted into the tubular parts 4f, 4g of this front piece 4, the ends 5a, 5b protrudes from the tubular portions 4f, 4g.

Reference numeral 6 denotes a ring, which has a substantially H-shaped planar shape when unfolded, and its end part is bifurcated.

As shown in FIG.
folded inward.

Therefore, the ring 6 is fixed to the connecting pin 5 without coming off in the band width direction.

When attaching the ring 6 to the connecting pin 5 in this way, the ring 6 is also wrapped around and fixed to the end of the connecting pin 8 which is inserted into the tubular part of the adjacent piece 7, thereby connecting a plurality of pieces. be able to.

(f) Effects of the invention According to the invention, after the pieces are assembled, they are connected using connecting pins and rings, so it is possible to finish the pieces individually.

In addition, since the pieces and rings can be finished separately, especially when plating one of them, there is no need to cover the other with a mask, which saves the cost and time required for masks. can.

Furthermore, a plurality of pieces with various finishes or platings can be manufactured in advance, and these pieces can be freely combined, making it possible to increase the variety of bands without changing the structure.

In addition, since the connection is made using a connecting pin and a ring wrapped around the end of the connecting pin, the pieces move easily and can be provided with quality comparable to high-end bands.

Further, since the end of the ring is wrapped around the outer periphery of the end of the connecting pin and bent into the circumferential groove to be firmly fixed, the pin does not come off and reliability can be improved.

[Brief explanation of the drawing]

Fig. 1 is a partially exploded back view showing a watch band according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of the piece shown in Fig. 1, and Fig. 3 is a connecting portion between the connecting pin and ring shown in Fig. 1. FIG. 1, 7... Piece, 2... Back plate, 2a... Convex part, 3
... middle plate, 3a, 3b ... protrusion, 4 ... front piece,
4a, 4b...bent part, 4c, 4d...end part, 4
e...Concave portion, 4f, 4g...Tubular portion, 5, 8...
Connecting pins, 5a, 5b...ends, 5c, 5d...
Circumferential groove, 6...ring.

Claims (1)

[Claims for Utility Model Registration] A back plate having a convex portion on one end surface in the longitudinal direction of the band, and a band having a length in the longitudinal direction of the band that is joined to the back plate and is longer than the length of the back plate in the longitudinal direction of the band. The middle plate has a bent part at the end in the longitudinal direction of the band, and the bent part is bent and brought into contact with a step formed between the middle plate and the back plate. In order to form a tubular part and to prevent the back plate and the middle plate from shifting in the band width direction, the concave part provided at the end of the bent part and the convex part of the back plate are fitted. A connecting pin that is inserted into the tubular part of the front piece and has a circumferential groove near its end, and a connecting pin that is adjacent to the end of the connecting pin that protrudes from the tubular part of the front piece. A watch band comprising: a ring wrapped around an end of a connecting pin and bent and attached within the circumferential groove.