JP2000106920A - Middle hook for watch band - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a middle hook mechanism for watch band by which a middle hook part using a folded member is made thin in appearance with a simple configuration. SOLUTION: The third member 7 of the folded member 9 becomes a flat state after going between arm parts in the second member 6 and also, in this sate, the whole folded member 9 is stored in a storing groove 10. Therefore, the folded member 9 is not projected and exposed to an outer part in a wearing state even when the watch band using the middle hook is worn. Then, a thickness in the middle hook part is made to be thin to a degree being the same as that in other band parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism of a clasp used to connect the ends of a watch band for a wristwatch.

[0002]

2. Description of the Related Art Conventionally, in a watch band for a wristwatch, the ends of the band are connected by a clasp, and the clasp has a structure that can be opened when the wristwatch is attached to or detached from a wrist. ing. Although there are many types of structures of the clasp, as a basic structure, a two-folded member generally provided with a pair of connecting members rotatably with each other is often used.

Usually, the two-folded member is provided at the end of the band so as to be rotatable and openable and closable. When the wristwatch is worn on the wrist, it comes into contact with the inner surface of the band in a folded state. When attaching or removing a watch,
The wristwatch is opened and spread from the folded state, so that the wristwatch can be easily worn from the hand to the arm.

[0004]

However, the conventional watch band provided with the two-folded member is folded when the wristwatch is worn on the wrist and is in contact with the inner surface of the band. Therefore, the portion where the band and the two-folding member overlap is thicker than the other band-only portion, and the side surface of the two-folding member is visible from the outside.

[0005] For this reason, even if the design of the watch and the watch band is thin and clean as a whole, since the structure of the clasp using the two-folded member is as described above, it becomes thick at the site. Therefore, there has been a problem that an unnaturalness in appearance has been caused.

[0006] In particular, in a wristwatch exhibiting a sense of quality, such as a watch or a watch band manufactured using a Muku material, it is possible to solve the above-described problem in the middle clasp portion in order to further enhance the decorativeness. Was desired.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a centerpiece mechanism of a watch band which has a simple structure and can make a middle part using a two-folded member thinner in appearance.

[0008]

According to the present invention, there is provided a clasp mechanism comprising a two-fold member rotatably provided at an end of a watch band, wherein the two-fold member is folded. A groove for accommodating the two-folded member is formed in a portion that contacts in a folded state.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a closed state of a three-fold clasp according to a first embodiment of the present invention, FIG. 2 is a partial cross-sectional view of a clasp of FIG. 1, and FIG. It is a perspective view showing the state where the clasp part in an embodiment was opened.

As shown in FIGS. 1 and 3, the center clasp 1 is configured such that ends of a watch band (not shown) are fixed to both ends, respectively. A buckle part 3 is formed by connecting the pieces 2, and a first member 5 rotatably provided on a mounting piece 4 to which one end of the watch band is attached, and one end 6 a of the first member 5 is provided. A second member 6 including two fixed arms 6b, a third member 7 having one end 7a rotatably provided between the arms 6b at the other end 6c of the second member 6, The shaft member 8 is provided on the buckle portion 3 and rotatably supports the other end 7 b of the third member 7.

The second member 6 and the third member 7 constitute a two-fold member 9. Further, on the inner side of the buckle portion 3 (on the side in contact with the arm), the two-folding member 9 is housed as shown in FIG. A storage groove 10 is formed.

Therefore, when the clasp is closed, the third member 7 of the two-folded member 9 enters the space between the arms 6b of the second member 6 and becomes flat. Since the entirety enters the storage groove 10, even when the watch band using the clasp of this configuration is worn on the wrist, the two-folded member 9 projects outside and is not exposed in the worn state.

Therefore, the thickness of the middle clasp portion is as thin as that of the other band portions, the watch band is thin as a whole, and it has a very clean and smart appearance, and the conventional clasp The design problem caused by the emphasis on the thickness of the portion can be solved.

In the three-fold folding clasp 1, the second member 6 of the two-fold member 9 is composed of two arms 6b, and the third member 7 is composed of one arm. But it is not limited to such a shape and structure.
For example, it is also possible to employ a known plate-like member rotatably connected to each other.

FIG. 4 is a perspective view showing a closed state of a double-opening (double door) type clasp according to a second embodiment of the present invention, and FIG. 5 is a perspective view showing a state where the clasp part of the second embodiment is opened. is there.

As shown in FIGS. 4 and 5, the center clasp 11 has ends of a watch band (not shown) fixed to both ends, respectively. Piece 12
And a pair of independent buckle portions 13
a, 13b, the shaft portions 14a, 14b provided on the buckle portions 13a, 13b respectively have one end 15a,
16a, the first and second members 15 rotatably supported,
16, the other end 15b of each of the first and second members 15, 16,
A third member 17 rotatably supports 16b between two arms 17a and 17b.

The first and second members 15, 16 and the third members 15, 17 form a pair of two folding members 18, 19.
Is configured. Further, two fold members 18 and 19 are provided on the inner surface side (side in contact with the arm) of each of the buckle portions 13a and 13b.
In a closed state of the clasp closed as shown in FIG. 4, storage grooves 20 and 21 for storing the two folding members 18 and 19 are formed.

Therefore, when the clasp is closed, the first and second members 15 and 16 of the two folding members 18 and 19 enter between the arms 17a and 17b on both sides of the third member 17 to be flat. In this state, the two folded members 1
Since the entirety of the straps 8 and 19 enter the storage grooves 20 and 21, respectively, even if the watch band using the clasp is worn on the wrist, the two folded members 18 and 19 project and are exposed to the outside in the worn state. Never.

Therefore, in the middle clasp of the second embodiment,
Similar to the middle clasp of the first embodiment, the thickness of the clasp is reduced to the same extent as the other band portions, so that the entire wristwatch or watch band is thin and has a very clean and smart appearance. Thus, it is possible to solve the conventional design problem caused by the emphasis on the thickness of the clasp.

The double-opening clasp 11 of the second embodiment is not limited to the shape and structure shown in the drawing, as in the first embodiment. It is also possible to employ ones connected as much as possible.

In addition, usually, an adjuster piece into which a detachable pin for adjusting the length of the band is inserted is provided in the middle clasp, but the clasp is used in the first and second embodiments of the present invention. Since the storage grooves 10, 20, and 21 are formed in the portion, an adjustment piece having a pin as in the related art cannot be provided, and therefore, the adjustment piece needs to be provided in another band portion.

[0024]

As described above, according to the clasp mechanism of the watch band of the present invention, in the clasp using the two-folded member, the two-folded portion does not project outside and is not exposed. Therefore, the watch band has the same thickness as the other band portions in appearance, and the watch band as a whole is thin, and has excellent decorativeness.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a closed state of a three-fold clasp according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of a middle clasp of FIG. 1;

FIG. 3 is a perspective view showing a state where a clasp portion in the first embodiment is opened.

FIG. 4 is a perspective view showing a closed state of a double-ended clasp according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing a state where a clasp portion in a second embodiment is opened.

[Explanation of symbols]

 1,11 Nakadome 3,13a, 13b Buckle part 3,9,18,19 Folded member 10,20,21 Storage groove

Claims (3)

[Claims] 1. A clasp mechanism comprising a two-fold member rotatably provided at an end of a watch band, wherein the two-fold member is in contact with the folded part in a folded state,
A clasp mechanism for a watch band, wherein a groove for accommodating the two-folded member is formed. 2. The clasp mechanism according to claim 1, wherein the two-folding member forms a three-folded clasp. 3. The buckle mechanism according to claim 1, wherein the two-folding member constitutes a double-sided clasp.