JPH0421452Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> This invention is a watch band clasp made of leather, urethane, metal, etc. in a round (cylindrical) shape.
More specifically, it relates to a clasp that has a simple structure and is easy to connect and disconnect.

<Problems to be solved by this invention> Conventionally, round watch bands have had the problem of lacking a clasp that can be easily attached and detached.

In the proposed Utility Model Application Publication No. 60-65021, the receiver is formed in the same bottomed cylindrical shape as the insertion tool, so the insertion part cannot be inserted unless it is directly facing the receiver. However, there was a problem in that they were thin and small, making it difficult to connect and disconnect them. Furthermore, since there is no effective means for fixing the insertion part between the connected insertion part and the holder, the insertion part may rotate unexpectedly due to contact with other objects and may be pulled out from the holder. There was a problem that the connection was broken. The present invention attempts to solve these problems.

<Structure of the invention> The invention is a clasp for a round watch band, in which a rotating operating ring is attached to one of the mounting fittings by being biased toward the fitting, and the tip of the operating ring is fitted with a rotating operating ring. Attach a T-shaped latching rod having a latching arm, attach a front plate whose back surface is a latching surface for the first latching arm to the tip of the other mounting bracket, and attach the latching rod to the front plate. It is characterized by providing an entry/exit groove with an open bottom surface for allowing the rod to enter and exit, and an engaging uneven portion for retaining the latching of the latching arm on the abutting surface of the one mounting bracket and the operating ring. It's on the clasp of the watch band.

<Example> Examples will be described below based on the drawings.

Cylindrical fittings 2a and 2b are fitted to the opposite ends of the urethane round bands 1a and 1b. One of the mounting brackets 2a has a first half with a stepped surface 3a and a front side closed with a bent wall 3c provided with a center hole 3b to form a hollow book section 3 inside. The operating ring 4 is rotatably fitted on the outside of the holder. The operating ring 4 has a front plate 4a, and a latching rod 5 extends from the center toward the tip of the latching rod 5.
Latching arms 5a and 5b are provided on both sides of the tip.
In addition, one end is screwed onto the inner surface of the front plate 4a to support the support shaft 8.
is inserted into the box portion 3 through the center hole 3b, and a coil spring 6 fitted into the support shaft 8 urges the operating ring 4 toward the base side of the mounting bracket 2a. One end of the coil spring 6 is stopped by a support plate 7 provided at the tip of the support shaft 8, and the other end is stopped against the bending wall 3c. 10 is a finger hook protrusion provided on the outer surface of the operating ring 4, and 11a and 11b are protrusions and recesses for engaging provided on the butting end surfaces of the stepped surface 3a and the operating ring 4, and the latching arms 5a and 5b are rotated. The operating ring 4 is fixed at a position where it is latched onto a latching surface to be described later. Note that the operating ring 4 will not rotate unless it is moved forward against the elasticity of the coil spring 6 to disengage the concavo-convex portions 11a and 11b.

The other mounting bracket 2b has a front plate 12, and the hanging rod 5 is attached to the front plate 12 with an open bottom surface.
and a narrow entrance/exit groove 1 that allows the locking arms 5a, 5b to be rotated in the vertical direction and inserted/removed in series.
There are 3. The back side of the front plate 12 is a latch arm 5
a, 5b serves as a retaining surface 12a. Reference numeral 14 denotes a hollow portion forming a retaining surface 12a.

When connecting the clasps configured as above,
The operating ring 4 is pulled and rotated against the elasticity of the coil spring 6 so that the latching arms 5a and 5b of the latching rod 5 are oriented vertically, and the latching rod 5 is moved to the front side of the entrance/exit groove 13 or Fit into the entrance/exit groove 13 from the lower open part, then rotate the operating ring 4 90 degrees in the original direction to release the locking arms 5a, 5.
b is turned sideways. The latching arms 5a and 5b are attached to the latching surface 1 on the back side of the front plate 12 with the entrance/exit groove 13 in between.
At the same time, the operating ring 4 returns to the stepped surface 3a side due to the elasticity of the coil spring 6 and retreats, causing the concave and convex portions 11a and 11b to engage, making the operating ring 4 non-rotatable. Become.

To release the middle retainer, the operation ring 4 is pulled forward against the elasticity of the coil spring 6 toward the locking rod 5 to disengage the concave and convex portions 11a and 11b, and the operation is reversed to that described above. . The hanging rod 5 has hanging arms 5a and 5b.
By arranging it in series with the inside of the entrance/exit groove 13, it is possible not only to retreat but also to lower it, extract it from the entrance/exit groove 13, and separate it.

<Effects of the invention> As described above, in the present invention, the entrance/exit groove of the other half metal fitting into which the hanging rod is inserted is formed with an open bottom surface.
Since the latching rod can be inserted and removed from the front as well as from below, a thin and small round watch band can be easily latched and unhooked. In addition, the operation ring is biased toward one mounting bracket, and a concave and convex portion for engagement is provided at the latching position of the abutting surface between the operating ring and one of the mounting brackets, so that the operation ring is latched by the engagement of the concave and convex portions. It is possible to visually check whether the arm is engaged with the engagement surface, and the engagement of the concave and convex portions can prevent accidental disengagement.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the watch in a separated state, Fig. 2 is a perspective view showing an example of the operation when the watch is removed from the connected state, Fig. 3 is a cross-sectional plan view of the same, and Fig. 4 is a perspective view of the watch mounting part. Figures 1a and 1b are watch bands, 2a and 2
b is the mounting bracket, 3 is the box part, 4 is the operating ring, 5
5a, 5b are latching arms, 6 is a coil spring, 7 is a support plate, 8 is a support shaft, 9 is a screw part, 10
11a and 11b are projections for finger hooks, 11a and 11b are concave and convex portions for engaging and fixing, 12 is a front plate, 12a is a latching surface, 13 is an entry/exit groove, 14 is a hollow portion, and 15 is a watch body.

Claims (1)

[Scope of utility model registration request] It is a round clasp for a watch band, and is attached to one of the mounting fittings by forcing a rotating operating ring toward the fitting, and has a latching arm at the tip of the operating ring. A hanging rod formed in the shape of a letter is attached, and a front plate whose back surface is used as a hanging surface for the locking arm is attached to the tip of the other mounting bracket, and the lower surface is opened to allow the hanging rod to be moved in and out of the front plate. A clasp for a watch band, characterized in that a groove is provided, and a mating surface of the one mounting bracket and the operation ring is provided with an engaging uneven part for holding the latching arm.