JP2001197911A - Band for wristwatch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assemble a wristwatch band by securely holding side pieces by means of a connection pin and securely retaining a center piece from both sides by the side pieces without using such a constitution that each shaft end of the connection pin projecting outward from each insertion hole of the center piece is press-fitted in the fixing hole of the side piece. SOLUTION: Connection pins 2a, 2b are insereted in insertion holes 10a, 10b, 11a, 11b of respective center pieces 1a, 1b, etc. Each shaft end of the connection pins 2a, 2b projecting from the adjacent insertion holes 10a, 10b, 11a, 11b of these center pieces 1a, 1b, etc., is inserted in fixing holes 30a, 30b, 31a, 31b of the side pieces 3a, 3b, to hold the center pieces 1a, 1b, etc., from both sides by the side pieces 3a, 3b, etc. Further, stopper pieces 4a, 4b are inlaid into spot facing holes 4a, 4b of the side pieces 3a, 3b, etc., and projections 40a, 40b, 41a, 41b are engaged with respective steps 20a, 20b, 21a, 21b of the connection pins 2a, 2b and further the side pieces 3a, 3b, etc., are held by the connection pins 2a, 2b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a wristwatch band.

[0002]

2. Description of the Related Art Conventionally, as a band for a wristwatch, a through hole penetrating in the lateral direction is provided near both ends of a side face, and a plurality of center pieces are arranged in series, and a center piece is formed by projecting both ends of a shaft outward. A connecting pin inserted into each through-hole and a stop hole for inserting a shaft end of the connecting pin protruding from an adjacent through-hole of each center piece are provided near both ends of the side surface so as to extend between adjacent side portions on both sides of each center piece. There is a type in which a side piece is configured as an assembly part.

In the wristwatch band, each shaft end of a connecting pin projecting outward from each through hole of a center piece is press-fitted into a stop hole of a side piece, and the side piece is held by the connecting pin. It is assembled in a chain by holding the center piece from both sides with side pieces.

However, in the wristwatch band, the diameter of the stop hole and the diameter of both shafts of the connecting pin must be strictly controlled. Since the press-fitting into the stop holes of the pieces must be carefully performed, the assembling requires time and effort.

[0005] In particular, when the center piece and the side piece are formed of a super-hard material such as a cemented carbide or ceramics, it is necessary to apply a special electric discharge machining technique to the pore machining. It takes time.

[0006]

SUMMARY OF THE INVENTION The present invention is not limited to a configuration in which each shaft end of a connecting pin projecting outward from each through hole of a center piece is press-fitted into a stop hole of the side piece. An object of the present invention is to provide a wristwatch band that can be securely held by a connecting pin and that can be assembled by securely holding a center piece from both sides with side pieces.

[0007] In addition to the above-mentioned problems, it is another object of the present invention to provide a wristwatch band that can be easily assembled from structurally simple parts and that is well assembled.

[0008]

According to a first aspect of the present invention, there is provided a wristwatch band according to the first aspect of the present invention, wherein a plurality of center pieces arranged in series are provided with through holes penetrating in the lateral direction near both ends of the side face. The center pin is provided with a connecting pin that projects outwardly and inserted into each through hole of the center piece, and a stop hole that inserts the shaft end of the connecting pin that protrudes from the adjacent through hole of each center piece near both ends of the side face. It is assembled from side pieces extending between the adjacent side parts on both sides of the piece, and a connecting pin provided at both ends of the shaft to insert a step portion for reducing the shaft diameter into a stop hole of the side piece, and a counterbore hole reaching the stop hole of the side piece. With a side piece provided from the inner surface side, and a stopper piece provided with a projection that fits into the counterbore of the side piece and engages with the step of the connection pin, and connects both ends of the shaft outward. Pin the center piece Insert each shaft end of the connecting pin that protrudes from the adjacent through hole of this center piece into the stop hole of the side piece, hold the center piece from both sides with the side piece, and further, attach the stopper piece to the side piece's seat. It has a chain portion which is fitted into a counterbore and has a side piece held by the connecting pin by engaging the projection of the stopper piece with each step of the adjacent connecting pin.

A wristwatch band according to a second aspect of the present invention comprises a chain portion assembled with a side piece provided with a stop hole which does not penetrate from the side facing the center piece to the other side. ing.

In the wristwatch band according to a third aspect of the present invention, a pair of hooks having a substantially semicircular locking portion on the side edge near the front end for engaging with each step portion from between the adjacent connecting pins. It is constituted by having a chain portion assembled with a stopper piece provided with a stopper projection.

According to a fourth aspect of the present invention, there is provided a wristwatch band having a chain portion assembled with a center piece and a side piece made of a super hard material such as a hard metal or ceramics. I have.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, FIG. 1 shows a side view of a wristwatch band B equipped with a wristwatch C, except for a buckle. In the wristwatch band B, the chain portion b _1, a chain portion b _2, the chain portion b _3, the chain portion b ₄ are constituted by respective different structures. In the chain unit in the chain portion b ₁ it is mainly composed of a special structure. Note that, for convenience, the connection side with the wristwatch C will be referred to as “the tip side of the wristband B” and the contact side with the wrist will be referred to as “the inside of the wristband B”.

[0013] As a chain portion _{b 1} is passed through holes 10a, 10b, 11a, a plurality of center piece 1a provided with 11b at both ends near the side penetrating the lateral direction as shown in Figure 2, 1
b and the through holes 10a, 1 of the center pieces 1a, 1b,.
0b, 11a, 11b, connecting pins 2a, 2b
And through holes 10 adjacent to each center piece 1a, 1b.
b, 11a, are assembled with side pieces 3a, 3b provided with stop holes 30a, 30b, 31a, 31b for inserting the shaft ends of the connection pins 2a, 2b protruding from both ends of the side surface.

FIG. 2 shows the minimum assembly required to assemble a series of chain blocks. If there are a plurality of parts each having a different size or the like, the center piece 1a has through holes 10a and 10b penetrating in the lateral direction as shown in FIGS. 3a and 3b. Provision near the part, while forming the overall shape substantially elliptical,
It is configured by chamfering the outer contour edge.

The connecting pin 2a has a center piece 1 at both shaft ends.
a through the through holes 10a and 10b, and inserted through the through holes 10a and 10b. The shaft diameter of the through hole 1a of the center piece 1a is allowed to allow the center piece 1a to swing.
It is formed slightly thinner than 0a and 10b. As shown in FIG. 4, the connecting pin 2a has a stepped portion 2 for reducing the shaft diameter.
0a and 20b are through holes 10a and 10b of the center piece 1a.
It is provided at each shaft end projecting more outward.

As shown in FIG. 5A and FIG. 5B, the side pieces 3a are formed with the center holes 1a, 1b with the stop holes 30a, 30b.
Are provided near both ends of the side surface on the side opposite to..., The entire shape is formed substantially elliptical, and the outer contour edge is chamfered. The stop holes 30a and 30b of the side piece 3a are provided as stop holes that do not penetrate from the side facing the center piece 1a to the other side surface. The side piece 3a has a stop hole 30a, 3
A counterbore 30c reaching 0b is provided for press-fitting a stopper piece described later.

In addition to each of the assembled parts, a main chain part b
_As shown in FIG. 2, a projection 40 is fitted into the counterbore holes 30c, 31c of the side pieces 3a, 3b to engage with the step portions 20a, 21a, 20b, 21b of the connecting pins 2a, 2b.
a, 40b, a stopper piece 4a provided with 41a, 41b,
4b.

The stopper piece 4a is formed by providing a pair of latching projections 40a, 40b, 41a, 41b as projections as shown in FIG. Each of the latching projections 40a, 40b, 41a, 41b has a substantially semicircular locking portion 40c, 40d, 41c that engages with each step portion of the connecting pin from between adjacent connecting pins (not shown). , 4
1d is formed on the side edge near the front end. The main body is formed in substantially the same shape so as to fill the counterbore 30c of the side piece 3a.

[0019] To assemble a chain portion _{b 1} from the respective components, and inserting the shaft end portions connecting pin 2a to protrude outward, 2b the center piece 1a, through-holes 10b = 1b, the 11a, the center piece Adjacent through holes 10 of 1a, 1b
b, 11a, the shaft ends of the connecting pins 2a, 2b are inserted into the stop holes 30a, 30b, 31 of the side pieces 3a, 3b.
a, 31b, and the center pieces 1a, 1b are held from both sides by side pieces 3a, 3b.

Next, the stopper pieces 4a and 4b are
a, 3b are fitted into the counterbore holes 30c, 31c, and the latching projections 40a, 40b, 41a, 41b are connected to the adjacent stepped portions 20a, 20b, 21a, 2 of the connecting pins 2a, 2b.
1b to engage the side pieces 3a, 3b with the connecting pins 2.
What is necessary is just to assemble so that it may hold by a and 2b. From this chain block, each block that follows may be configured as chain portion b ₁ by assembling sequentially repeated as described above.

[0021] When configured in this manner a chain portion _{b 1} is the center piece 1a as shown in FIG. 7 and FIG. 8, 1b
Can be securely held from both sides by the side pieces 3a, 3b, and the latching projections 40a, 40 of the stopper pieces 4a, 4b fitted into the counterbore holes 30c, 31c of the side pieces 3a, 3b.
The side pieces 3a, 3b can be securely held by the connecting pins 2a, 2b by engaging the steps b, 41a, 41b with the step portions 20a, 21a, 20b, 21b of the adjacent connecting pins 2a, 2b.

Accordingly, the through holes 1 in the center pieces 1a, 1b
0a, 10b, 11a, 11b and side pieces 3a, 3
The stop holes 30a, 30b, 31a, 31b need not be strictly controlled in diameter, and the connecting pins 2a,
It is not necessary to strictly control both shaft diameters of 2b. As a result, it is possible to assemble the parts without any trouble from parts that are easy to process and structurally simple. Also, the side pieces 3a, 3b are provided with stop holes 30a, 30b, 31a, 31b which do not penetrate from the side facing the center pieces 1a, 1b to the other side face, so that they can be assembled in a good shape.

In this wristwatch band, the center pieces 1c and 1d are connected to the side pieces 3 as shown in FIG.
c, 3d and hold the side pieces 3c, 3
The side pieces 3c, 3d are held by the connecting pins 5a, 5b by engaging the latching projections of the stopper pieces 4a, 4b fitted in the counterbore holes d with the step portions of the adjacent connecting pins 5a, 5b. It can be configured as chain portion _{b 2} by.

[0024] In the chain portion _{b 2,} for example, the connecting pin 5
A through hole may be provided as a stop hole for inserting a. Even if the stopper hole of the connecting pin 5a is provided as a through hole, the engaging projections of the stopper pieces 4a, 4b
The side pieces 3c and 3d can be securely held by engaging with the step portions a and 5b, and by fitting the shaft fixing collar 5c on the axis of the connecting pin 5a and inserting it into the through hole of the center piece 1c. It is assembled as follows.

The connection side with the wristwatch C is as shown in FIG.
Connecting pin 1 protruding from through hole 10a of center piece 1a
c into the stop holes of the side pieces 6a and 6b,
Connect the side pieces 6a, 6b to both sides of the center piece 1a.
The chain part b ₃By assembling
Wristwatch C can be equipped.

The side pieces 6a and 6b are the center pieces 1
The components arranged on both sides of a are formed symmetrically.
This side piece will be described with reference to one side 6a.
A stop hole 60 for fitting the shaft end of the connecting pin protruding from the through hole of the center piece, a receiving edge 61 for supporting the frame of the watch C from the lateral side, and a frame for the watch C from below And a stepped portion 62.
In the chain portion b _3, it is assembled by using a short linking pin 1c from the need for inserting the support pin watch C.

The connection side of the buckle, the end piece 7, as shown in Figure 7, are assembled as a chain portion b ₄ comprises a buckle mounting piece 8. The end pieces 7 are shown in FIGS.
As shown in the figure, a notch 70 for receiving the center piece 1e at the rear end side, both overhanging portions 71a and 71b, and a bridging portion 72 are formed in a substantially U-shaped plane. A fitting hole 73 for the buckle attachment piece 8 is provided inside each of the overhang portions 71a and 71b from the bridge portion 72. Also, a stop hole 74 with the center piece 1e is provided in both overhang portions 71a and 71b.
a, 74b and stop holes 75a, 7 of the buckle attachment piece 8
5b is provided.

On the other hand, the buckle attachment piece 8 is
11A, a main body 80 to be fitted into a fitting hole of an end piece, and legs 81 projecting inward from the main body 80 as shown in FIG.
a, 81b are formed in a front inverted U-shape. The buckle attachment piece 8 has a stop hole 82 with an end piece.
0 are provided as through holes, and stop holes 83a, 83b through which the support pins on the buckle side are inserted are leg portions 81a, 81b.
b.

As shown in FIGS. 7 and 8, the end piece 7 has a connection pin 9a having a long axis and can be connected to the center piece 1e. 7
3 and can be fixed to the end piece 7 by a connecting pin 9b having a long axis. In addition to this, the collars 9c, 9
By inserting d into the through-hole of the center piece 1c and the stop hole 82 of the buckle attachment piece 8 by fitting it on the axis of the connecting pins 9a and 9b, each part can be securely assembled and held.

In order to construct each part from the simple structure described above, the center pieces 1a, 1b... And the side pieces 3a, 3b
Can be easily formed of a cemented carbide such as tungsten carbide (WC), tantalum carbide (TaC) or titanium carbide (TiC), or a super-hard material such as zirconia ceramics. This makes it possible to configure the wristwatch band B that is unlikely to be scratched or the like. In particular, when formed from a ceramic material such as zirconia ceramics, it can be configured to be suitable for users who may be allergic to metals.

[0031]

As described above, according to the wristwatch band of the first aspect of the present invention, the connecting pins provided at both ends of the shaft for inserting the steps for reducing the shaft diameter into the stop holes of the side pieces, A side piece provided with a counterbore hole reaching the stop hole from the inner surface side, and a stopper piece provided with a projection that fits into the counterbore hole of the side piece and engages with the step of the connecting pin, and has both ends of the shaft. Insert the connecting pin into the through hole of each center piece by projecting outward, insert each shaft end of the connecting pin protruding from the adjacent through hole of this center piece into the stop hole of the side piece, and put the center piece on both sides with the side piece , And further, the stopper piece is fitted into the counterbore of the side piece, and the projection of the stopper piece is engaged with each step of the adjacent connecting pin, and the chain portion holding the side piece with the connecting pin is formed. By providing The side piece can be securely held by the connecting pin, and the center piece can be connected to the side piece without depending on the configuration in which each shaft end of the connecting pin protruding outward from each through hole of the piece is press-fitted into the stop hole of the side piece. And can be easily assembled from structurally simple parts by securely holding from both sides.

According to the wristwatch band according to the second aspect of the present invention, by providing a chain portion assembled with a side piece provided with a stop hole which does not penetrate from the side opposite to the center piece to the other side surface. Assembled in good appearance.

According to the wristwatch band according to the third aspect of the present invention, a pair of substantially semicircular locking portions which engage with each stepped portion at the side edge near the front end are provided between the adjacent connecting pins. By assembling the chain portion with the stopper pieces provided with the latching projections, the side pieces can be securely held by the connecting pins, and the center piece can be securely held from both sides by the side pieces.

According to the wristwatch band according to the fourth aspect of the present invention, by providing a chain portion assembled with a center piece and a side piece made of a super hard material such as a hard metal or a ceramic, It can be configured as a wristwatch band that is unlikely to be scratched, and particularly when formed from a ceramic material such as zirconia ceramics, it can be configured to be suitable for a wearer who may be allergic to metal.

[Brief description of the drawings]

FIG. 1 is a side view showing a wristwatch band according to the present invention.

FIG. 2 is an elevation perspective view showing the minimum assembly components required for assembling the wristwatch band in a developed state.

FIG. 3A is a plan view showing a center piece required for assembling the wristwatch band.

FIG. 3b is a side view showing the center piece of FIG. 3a.

FIG. 4 is a plan view showing connection pins required for assembling the wristwatch band.

FIG. 5A is a plan view showing a side piece required for assembling the wristwatch band.

FIG. 5b is a side view showing the side piece of FIG. 5a.

FIG. 6 is a front view showing stopper pieces required for assembling the wristwatch band.

FIG. 7 is a plan view showing the wristwatch band with one side partially cut away.

FIG. 8 is a side view showing the watch band of FIG. 7 partially cut away.

FIG. 9A is a plan view of a side piece on a timepiece equipment side required for assembling the wristwatch band.

9b is a side view showing the side piece of FIG. 9a.

FIG. 10a is a plan view showing an end piece on a buckle equipment side required for assembling the wristwatch band.

FIG. 10b is a side view showing the end piece of FIG. 10a.

FIG. 11A is a front view showing a buckle attachment piece required for assembling the wristwatch band.

FIG. 11b is a side view showing the buckle attachment piece of FIG. 11a.

[Explanation of symbols]

 1a, 1b: Center piece 10a, 10b, 11a, 11b Through hole 2a, 2b Connecting pin 20a, 20b, 21a, 21b Step 3a, 3b ... Side piece 30a, 30b, 31a, 31b Stop hole 30c, 31c Counterbore 4a, 4b Stopper pieces 40a, 40b, 41a, 41b Projection

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Susumu Shibata 3-8-22 Nitta, Adachi-ku, Tokyo Inside Namiki Seimi Jewelry Co., Ltd. (72) Inventor Isamu Takahashi 3--8, Nitta, Adachi-ku, Tokyo No. 22 Namiki Seiki Inside the Jewel Co., Ltd.

Claims (4)

[Claims] 1. A center piece having a plurality of through-holes penetrating in the lateral direction near both ends of a side face and being arranged in series, and a connecting pin having both ends of a shaft protruding outward and being inserted into each through-hole of the center piece. For a wristwatch assembled from side pieces extending between adjacent side parts on both sides of each center piece, a stop hole for inserting the shaft end of a connecting pin protruding from an adjacent through hole of each center piece is provided near both ends of the side face. In the band, a connecting pin provided at both ends of the shaft to insert a step portion to reduce the shaft diameter into the stop hole of the side piece, a side piece provided with a counterbore hole from the inner surface to the stop hole of the side piece, and a counterbore of the side piece A stopper piece provided with a projection that is fitted into the hole and engages with the step of the connecting pin, and the both ends of the shaft are protruded outward to insert the connecting pin into the through hole of each center piece, and to be adjacent to this center piece. Matching Insert each shaft end of the connecting pin protruding from the hole into the stop hole of the side piece, hold the center piece from both sides with the side piece, further fit the stopper piece into the counterbore hole of the side piece, and project the stopper piece. A wristwatch band comprising: a chain portion in which a side piece is held by a connecting pin by engaging with a step of an adjacent connecting pin. 2. The wristwatch according to claim 1, further comprising a chain portion assembled with a side piece provided with a stop hole which does not penetrate from the side facing the center piece to the other side surface. band. 3. A stopper piece provided with a pair of latching projections having a substantially semicircular engaging portion on a side edge near the front end thereof for engaging with each step portion from between the adjacent connecting pins. The wristwatch band according to claim 1 or 2, wherein the wristband includes a chain portion. 4. A chain part assembled with a center piece and a side piece made of a super-hard material such as a cemented carbide or ceramics.
The wristwatch band according to any one of the above.