JPS6129294Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a clasp structure for a watch band.

The clasp structure of a conventional watch band will be explained based on FIG.

The conventional clasp structure shown in FIG. 1 includes a frame 1 having a pin 2, a back plate 4 rotatably attached to the frame 3, and a front plate 5 rotatably attached to the back plate 4. It was composed of

The conventional clasp having the above structure was connected by hooking the frame 1 having the pin 2 on the front plate 5, and then rotating the front plate 5 so that it bit into the back plate 4. Therefore, even if the top plate 5 is opened, the frame 1 does not come off immediately, so the user can
This has the advantage that it will not fall off your arm until it is removed from the top plate 5.

However, hooking or removing the frame 1 from the front plate 5 in this way requires an extremely difficult operation when attaching or detaching the strap of a portable wristwatch, since this operation must be performed with one hand. was.

Further, if the clasp is extremely miniaturized, the above-mentioned attachment/detachment operation becomes even more difficult, so it has been difficult to make the clasp smaller or thinner.

The present invention comprises a clasp including a back plate having a recess, an engaging member that is accommodated in the recess and engages with the back plate, and a front plate that is rotatably attached to the back plate. The purpose of this invention is to eliminate the drawbacks of the conventional example, to enable one-touch attachment and detachment, and to provide a compact or thin structure for the clasp.

Embodiments of the present invention will be described below based on the drawings. FIG. 2 is a perspective view showing an embodiment of the present invention. 6 is a back plate having a plate-like part 6a having a recessed part 6b;
It consists of an attaching part 6c provided on one side of the plate-like part 6a to the band body, and a protruding part 6d for positioning an engaging member 8, which will be described later.

Reference numeral 7 denotes a front plate rotatably attached to the plate-like portion 6a of the back plate 6, and a protrusion 7a is provided at the tip thereof. Reference numeral 8 denotes an engaging member, which includes a frame 8a and a support member 8b rotatably attached to the frame 8a.
and an engaging piece 8c that is attached to the support member 8b and has an engaging portion 8d at its tip.

Next, the engaged state of the clasp of this embodiment will be explained using FIGS. 3 to 8.

3 is a plan view of the clasp shown in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line AA of the clasp shown in FIG. 3.

When the middle piece 9 of the band is attached to the attachment part 6c of the back plate 6, there is a gap between the plate-like part 6a and the middle piece 9.
It is set so that G occurs.

During this time, G connects the engaging portion 8d of the engaging member 8 to the back plate 6.
This serves as an escape hole for the engaging portion 8d when the engaging portion 8d is bitten into the side surface of the plate-like portion 6a.

5 is a plan view showing a state when the back plate 6 and the engaging member 8 shown in FIG. 3 are fitted together, and FIG. 6 is a sectional view taken along line BB of the clasp shown in FIG. 5. It is.

The engagement piece 8c of the engagement member 8 fits into the recess 6b of the back plate 6.
is housed and positioned within.

Further, the protruding portion 6d of the back plate 6 positions the supporting member 8b of the engaging member 8, and also positions the supporting member 8b of the engaging member 8.
This is to fill the gap created between the frame 8a and the back plate 6. The back plate 6 and the engaging member 8 fitted in this way are arranged such that the engaging portion 8d of the engaging member 8 is connected to the back plate 6.
Since it is engaged with the plate-like portion 6a, it will not come off unless this engagement is released.

Figure 7 shows the top plate 7 of the clasp in the state shown in Figure 5.
FIG. 8 is a plan view showing the closed state of the seventh
It is a CC sectional view of the clasp shown in the figure.

As is clear from the figure, the top plate 7 has an engaging piece 8c.
is closed while being pressed against the back plate 6 side.

The clasp with the top plate 7 closed in this way is
It has approximately the same thickness as the middle piece 9 of the band, and the vertical and horizontal dimensions of this clasp are almost the same as the band pieces. FIG. 9 is a perspective view showing another embodiment of the present invention. It should be noted that the same parts as in the embodiment described above are given the same reference numerals. In this embodiment, the recess 6b of the back plate 6 of the clasp is provided with a protrusion 6e projecting from its bottom surface. on the other hand,
The engagement piece 8c of the engagement member 8 has a protrusion 6e on the back plate 6.
A hole 8e is provided at a position corresponding to the hole 8e, and when the engaging piece 8c is accommodated in the recess 6b of the back plate 6, the hole 8e and the protrusion 6e are made to fit and are temporarily connected. FIG. 10 is a perspective view showing another embodiment of the present invention. Note that in this embodiment as well, the same parts as in the other embodiments are given the same reference numerals. Engagement piece 8c of engagement member 8 in this embodiment
is provided with a protrusion 8f on its side surface, and an engagement piece 8 of the engagement member 8 is provided on the plate-shaped portion 6a of the back plate 6.
A recess 6b having a shape matching the shape of c is provided.

As is clear from its shape, when the engaging piece 8c is fitted into the recess 6b of the back plate 6, the clasp is temporarily connected without coming off in the longitudinal direction of the band.

According to the present invention, the clasp is temporarily connected by simply pushing the engaging member into the recess of the back plate, so it can be easily connected with one hand, and when removed, the front plate must be opened to engage the clasp. It is only necessary to lightly lift the mating member, and it can be easily attached and detached with one hand.

In addition, as mentioned above, the clasp of the present invention has excellent operability, and its function is not impaired even when it is made smaller and thinner.Therefore, in terms of design, it has almost the same dimensions and shape as the band pieces. It is possible to realize a middle clasp having the following properties.

As mentioned above, the present invention is a watch band clasp structure with remarkable practical effects.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the structure of a conventional clasp, Fig. 2 is a perspective view showing an embodiment of the present invention, Fig. 3 is a plan view of the clasp shown in Fig. 2, and Fig. 4 is a diagram showing the structure of the clasp of the present invention. Fig. 5 is a plan view showing a state in which the back plate shown in Fig. 3 and the engaging member are fitted together, and Fig. 6 is a cross-sectional view of the clasp shown in Fig. 5. B-B sectional view, Figure 7 is the 5th
A plan view showing the closed state of the top plate of the clasp shown in the figure,
Figure 8 is a cross-sectional view of the clasp shown in Figure 7,
The figure is a perspective view showing another embodiment of the invention, and FIG. 10 is a perspective view showing another embodiment of the invention. 6...Back plate, 7...Top plate, 6a...Plate-like part, 7
a...Protrusion, 6b...Recess, 8...Engagement member, 6
c...Mounting part, 8a...Frame, 6d...Protrusion part, 8
b...Supporting member, 6e...Protrusion, 8c...Engaging piece, 8d...Engaging portion, 8e...Hole, 8f...Protrusion.

Claims (1)

[Claims for Utility Model Registration] 1. A plate-like part having a recess, a mounting part of the band body provided on one side of the plate-like part, and a mounting part of the plate-like part opposite to the mounting part. A back plate consisting of a protrusion provided on the other side, a top plate rotatably attached to the side of the plate-like part of the back plate, a frame attached to the band body, and a frame that rotates on the frame. The back plate includes: a movably attached support member; and an engagement member that is attached to the support member and fits into the recess of the back plate and engages with the plate-shaped portion; The supporting member of the engaging member is positioned by the protruding part, the engaging piece of the engaging member is fitted into the recess of the back cover to temporarily connect, and the front plate is closed to connect. The distinctive feature of the watch band is the clasp structure. 2. The engaging piece of the engaging member has an engaging part at the tip, and the engaging part is inserted into the gap formed between the plate-like part of the back plate and the band main body, and the engaging piece of the engagement member is inserted into the gap between the plate-like part of the back plate and the band body. The clasp structure for a watch band according to claim 1, wherein the clasp structure is engaged by biting into the side surface of the watch band. 3 The concave portion of the back plate is provided with a protrusion that protrudes from the bottom surface thereof, and the engagement piece of the engagement member is provided with a hole at a position corresponding to the protrusion, and the protrusion and the hole are connected. The clasp structure for a watch band according to claim 1, which is characterized in that it is adapted and temporarily connected.