JPH0334094Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> This invention relates to an adjuster pin for a watch band.

<Problems that this invention attempts to solve> The adjuster pin structure for this type of watch band is described in the Collection of Known and Commonly Used Techniques (Metal Watch Bands) published by the Japan Patent Office on December 25, 1982, page 120. There is an elastic tube (C-ring) formed in the shape of a missing circle with the pin, but this azimuth pin structure uses the elasticity of the C-ring to hold and fix the pin, but since the C-ring is thin and small, its elasticity deteriorates and If the pin is inserted in a biased manner, the C-ring will not hold it properly and the pin will often come out. The present invention attempts to solve such problems.

<Structure of the invention> The present invention provides a step enlarged part in a part of the connecting hole that crosses the meshing part between the pieces, and inserts a short elastic tube into the connecting hole, and passes through the elastic short tube from one end of the connecting hole to the other end. In a structure in which a connecting pin is press-fitted in between, and the pin is held and fixed by the short elastic tube, an inwardly bent pressing piece is formed by a cut in the middle of the short elastic tube, and the pressing piece The adjustment pin structure for a watch band is characterized in that a protrusion is provided on the inner surface of the center portion of the pin, and a concave ring that fits with the protrusion is provided on the circumferential surface of the pin.

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

As shown in FIG. 2A, the elastic short pipe 1 has a bowl-shaped notch 2 on the side surface of the middle part of the elastic pipe 1a, and the part surrounded by the notch 2 is pushed inward to form a pressing piece 3. The pressing piece 3 with the protrusion 4 is placed in the middle of an end pipe 1b which is formed by providing a protrusion 4 on the inner surface of the central part of the pipe 1b, or by having a folded end face 5 as shown in FIG. 2C. Form a notch. In the latter case, the pressing piece 3 with the protrusion 4 is formed in a flat plate state before the end faces 5 are folded together to form a pipe, and then the end pipe 1b is formed.

The connecting pin 6 has an outer diameter that allows it to be inserted into and removed from the elastic short tube 1 formed in this way, and has a concave ring 7 provided around it at a position where it fits into the protrusion 4.

FIGS. 4 to 7 show various examples of connections according to the present invention, between the pieces 8a for fixed connection,
In each of the connection between the bridge bodies 8b and the watch case 9 and the bridge body 8a that are connected for removal adjustment, a stepped enlarged hole portion 10a is provided in a part of the connection hole 10 for connection.
After the short elastic tube 1 is inserted into the connecting hole 10, the connecting holes 10 are communicated with each other by engaging the pieces, and the pin 6 is inserted from one side. During the insertion and fitting process, the pin 6 pushes the pressing pieces 3 apart, and at the point of completion, the concave ring 7 fits and fixes on the protrusion 4 due to the return pressure of the pressing piece 3, thereby connecting the pieces, etc. That will happen. When the connection between the pieces is to be released, the pin 6 is pushed out against the engagement between the protrusion 4 and the concave ring 7.

<Effects of the invention> As described above, in the present invention, an inward pressing piece is provided by a cut in the middle of the short elastic tube, and the connecting pin is held and fixed in the pressing piece part, so that the connecting pin is This has the effect of making it easier to press fit into the connecting hole and being firmly held by the return pressure of the pressing piece.

Further, even if the degree of pressure of the insertion pin against the short elastic tube is weak, the pressing piece absorbs the pressure and continues to hold the pin. Furthermore, since a repulsion sound is produced when the protrusion and the concave ring are fitted together, it is possible to confirm whether the fitting is normal.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a wristwatch knitted using the adjuster pin mechanism of the present invention, FIG. 2A is a perspective view showing a first example of an elastic short tube, and FIG. Figure 2C is a perspective view of a second example of an elastic short tube;
Fig. 3 is a sectional view showing the fitted and locked state of the short elastic tube and the pin, Fig. 4 is a cross-sectional plan view showing an example of the connection between pieces for fixed connection, and Fig. 5 is a second example of the same. , FIG. 6 is a sectional view of an example of the connection between the bridge bodies connected for removal and adjustment, and FIG. 7 is a sectional view of an example of the connection between the watch case and the bridge body. 1 is an elastic short tube, 2 is a notch, 3 is a pressing piece, 4 is a protrusion, 5 is a folded end surface, 6 is a connecting pin,
7 is a concave ring, 8a and 8b are pieces, 9 is a watch case,
10 is a connecting hole, and 10a is a step enlarged part.

Claims (1)

[Scope of utility model registration request] A stepped enlarged hole is provided in a part of the connecting hole that crosses the meshing part between the pieces, into which a short elastic tube is inserted, and a connecting pin is press-fitted from one end of the connecting hole through the elastic short tube and between the other ends. In the structure in which the pin is held and fixed by the short elastic tube, an inwardly bent pressing piece is formed by a cut in the middle of the short elastic tube, and a protrusion is formed on the inner surface of the central part of the pressing piece. An adjustment pin structure for a watch band, characterized in that a concave ring is provided on the circumferential surface of the pin to fit with the protrusion.