JP2553991Y2 - Watch band clasp - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clasp for a watch band, and more particularly to a clasp for a watch band capable of preventing rotation of a snap buckle for fastening the ends of two bands.

[0002]

2. Description of the Related Art In general, a watch band made of a noble metal is fastened using a snap buckle. The conventional snap buckle has a buckle lower plate and a buckle upper plate that are hinged, and one end of the buckle lower plate is pin-connected to one band end, and a retaining frame is pin-connected to the other band end. Then, with the retaining pin of this retaining frame hooked on the retaining hook on the buckle upper plate side, fold the upper buckle plate on the lower buckle plate and superimpose it, and fix the fixing claw on the buckle upper plate side to the member on the buckle lower plate side. Snap engagement.

[0003]

However, in the above-mentioned conventional snap buckle, the tip of the upper buckle plate easily projects upward from the upper surface of the band, and the tip hits a peripheral object to open the upper buckle plate and the band is opened. There was a problem that it was easy to come loose. In addition, an ultra-high-priced watch using precious metals or jewelry is often used with a longer band. In this case, it is rare that the snap buckle rotates around the pin and the buckle takes an upright posture, which may damage the cuffs of the clothes, injure the arm, or injure others. there were.

Accordingly, an object of the present invention is to solve the problem of the above-mentioned conventional clasp for a watch band and to provide a clasp for a watch band in which a snap buckle is prevented from rotating and standing around a pin. To provide.

[0005]

In order to achieve the above-mentioned object, the present invention has a buckle lower plate pinned to an end of a first band, and a buckle upper plate is foldable at a free end of the buckle lower plate. A pin for a watch band, wherein a pin is connected to an end of the second band while a pin is connected to the end of the second band, and a pin for the pin is hooked on a hook provided on an inner surface of the buckle upper plate. An anti-rotation member protruding forward is fixed to a substantially central portion of the retaining pin of the retaining frame.

[0006]

When the buckle of the clasp of the watch band of the present invention is fastened, the buckle upper plate of the second band is hooked on the buckle of the buckle upper plate of the snap buckle of the first band. When folded around the hinge axis and overlaid on the buckle lower plate, the anti-rotation member on the retaining pin of the retaining frame is sandwiched almost parallel between the upper buckle plate and the lower buckle plate, preventing rotation of the snack buckle I do.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a watch band fastener according to the present invention. In FIGS. 1A and 1B, reference numeral 1 denotes a part of a first band extending from the 6 o'clock position of a side case of a wristwatch, and a buckle is provided at the forefront of the band 1. The connecting piece 2 is pin-connected by a pin 3. The buckle connecting piece 2 has a pair of side arms 4, 4 arranged in parallel to the longitudinal direction of the band. Connecting pins 5 are provided at the ends of the side arms 4 and 4.
The buckle lower plate 6 is pin-coupled via. A buckle upper plate 7 is hinged to a free end of the buckle lower plate 6 via a hinge pin 8 so as to be foldable.

On the inner surface of the buckle upper plate 7, a hook-shaped retaining hook 9 is protruded. This fastening hook 9
Are provided so that the jaws 9a protrude forward. Further, fixed claws 10 are provided on the inner surface of the buckle upper plate 7 and at a position near the free end. The fixing claws 10 are provided on both sides of the buckle upper plate 7 in the width direction so as to be separated from each other.

The fixed claws 10, 10 are snap-engaged with the edges 11, 11 of the buckle lower plate 7 when the buckle is fastened.

As is apparent from FIG. 2, the safety plate 1 is located at a position near the hinge pin 8 of the buckle upper plate 7.
2 is hinged via a pin 13. The safety plate 12 has a safety claw 14 on the lower surface of the tip, and this safety claw 14 can be engaged with a locking groove 15 formed at the root of the fixed claw 10.

On the other hand, in FIG. 1, reference numeral 16 denotes a part of a second band extending from the 12 o'clock position of the side case of the wristwatch.
7 is pinned by a pin 18. The retaining frame 17 has a pair of side arms 19, 19 arranged in parallel with the longitudinal direction of the band, and a retaining pin 20 is fixed to the tip of each of them. A rotation preventing member 21 protruding forward is fixed to a substantially central portion of the retaining pin 20.

Next, the manner of use of the above-mentioned clasp for the watch band will be described. First, the wristwatch band in the released state is wrapped around the arm, the buckle upper plate 7 is opened, the claw 14 of the safety plate 12 is released, and the retaining frame 17 of the second band 16 is sunk into the buckle upper plate 7. Hooking the retaining pin 20 integrated with the rotation preventing member 21 on the retaining hook 9,
The safety plate 12 is lowered and the pawl 14 is engaged with the locking groove 15. Next, the buckle upper plate 7 is folded so as to overlap the buckle lower plate 6, and the fixed claws 10, 10 are snap-engaged with the edges 11, 11 of the buckle lower plate 6. At this time, the rotation preventing member 21 is sandwiched between the buckle lower plate 6 and the buckle upper plate 7 in the illustrated posture, as is apparent from FIG.

In the above-described embodiment, the safety plate 12 is formed of a band-like plate having a uniform width, but when the buckle upper plate 7 is released, the rotation preventing member 21
When the safety claw 14 is rotated together with the safety claw 12, the safety claw 14 may be inadvertently disengaged from the locking groove 15 by lifting the safety plate 12. To prevent this, a safety plate 22 as shown in FIG. 4 can be considered. That is, in this example,
In the foot plate 22, only the base end portion 22a and the front end portion 22b are formed to be narrow, the intermediate portion 22c is formed to be wide, and a window hole 23 is formed in the intermediate portion 22c. According to such an embodiment, when the buckle upper plate 7 is released, the rotation preventing member 2
1 rotates integrally with the retaining pin 20 and rises upward, but the rotation preventing member 21 passes through the window hole 23. With this configuration, it is possible to prevent the rotation preventing member 21 from pushing up the safety plate 12 when the buckle upper plate 7 is released. In the above-described embodiment, the plate-like rotation preventing member 21 is integrally fixed to the retaining pin 20. However, the present invention is not limited to this, and the retaining pin 20 itself is moved from the center. It can also be bent and formed in a convex shape.

[0014]

As described above, according to the present invention, a rotation preventing member is fixed to a substantially central portion of a retaining pin of a retaining frame of a buckle, and a parallel member is provided between the lower buckle plate and the upper buckle plate when the buckle is fastened. The buckle can be prevented from standing up and damaging the cuffs or being injured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a clasp for a watch band according to the present invention.

FIG. 2 is a perspective view seen from the inside of a buckle upper plate.

FIG. 3 is a side sectional view showing a buckle fastened state.

FIG. 4 is a perspective view showing a modification of the safety plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st band 2 Buckle connection piece 6 Buckle lower plate 7 Buckle upper plate 9 Fastening hook 10 Fixed claw 17 Fastening frame 20 Fastening pin 21 Rotation prevention member

Claims (1)

(57) [Scope of request for utility model registration] 1. A buckle lower plate is pin-connected to an end of a first band, and a buckle upper plate is foldably pin-connected to a free end of the buckle lower plate, while a retaining frame is provided at an end of the second band. In the clasp of the watch band, which is pin-coupled and the retaining pin of the retaining frame is hooked on the retaining hook provided on the inner surface of the buckle upper plate, the retaining pin of the retaining frame is directed forward toward substantially the center of the retaining pin. A clasp for a watch band, wherein a protruding rotation preventing member is fixed.