JPH0636742Y2 - Double-door type one-touch Nakadome for watch band - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a double door type one-touch clasp for watch bands.

<Prior Art> Japanese Utility Model Laid-Open No. 60-195521 discloses a type of clasp.
The publication describes that in a three-fold metal fitting of a double-door type that is connected between the bands, the upper lid of the three-fold metal fitting and the spring-loaded box inside the upper lid are replaceably mounted.

<Problems to be Solved by the Invention> However, in the above-mentioned publication, since the one-touch fitting is attached to the head portion of one of the bands, there is a problem that opening and closing operations are troublesome and complicated.

<Means for Solving the Problem> In the present invention, in a double-door type clasp with open / close plates pivotally fixed to both ends of the intermediate plate, a hook claw appears on the middle of the intermediate plate. One-touch button metal fittings are attached, a groove is provided on the head portion of the band for engaging and disengaging the hooking claw, and a push spring for raising the head portion of the band when released is laid on the one-touch metal fitting. Is.

<Example> An example will be described below with reference to the drawings.

FIGS. 1 to 6 show the first embodiment, in which the opening / closing plates 2a, 2b are pivotally fixed to both ends of the intermediate plate 1, and the rotating members 3a, 3b are attached to the tips of the opening / closing plates 2a, 2b. The outer surfaces of the rotating members 3a, 3b are brazed to the lower surfaces of the bands 4a, 4b. The head portions 5a, 5b of the bands 4a, 4b are provided with hooking grooves 6a, 6b respectively on one side thereof. A cover metal fitting 7 is provided on the middle of the intermediate plate 1, and a cover metal fitting 7 is provided.
A push button fitting 11 in which a push button member 10 is arranged with a member 8 and a V-shaped leaf spring 9 brazed to the inner surface of the
Fix and install. 13 is a screw hole and 14 is a through hole. The push button metal fitting 11 is a groove 1 into which the head portions 5a and 5b of the band are fitted.
5a, 15b on both sides, one of the grooves 15a, 15b is provided on the push button member 10 so that the engaging grooves 6a, 6b and the engaging claws 16a, 16b for engaging and disengaging, appear and disappear, Push springs 17a and 17b, which are partially connected to the bottom of the member 8, are laid on the other side of the grooves 15a and 15b.

Therefore, when the bands 4a, 4b are folded down on the intermediate plate together with the opening / closing plates 2a, 2b, the head portions 5a, 5b are fitted into the grooves 15a, 15b of the push button fitting 11 while the latching pawls 16a, 16b are retracted. Then, the latching claws 16a, 16b enter into the latching grooves 6a, 6b for latching, and as shown in FIG. 2, when the portion of the push button member 10 exposed from the cover fitting 7 is pushed back, The hook is released by the retracting of the pawl, and at the same time, as shown in FIG.
By pressing, the head part of the band will be flipped up.

7 to 9 show a second embodiment, in which the head portion of the band is provided with engaging grooves 6a and 6b on both sides, and is engaged with each of the member 8 and the push button member 10 constituting the push button metal fitting. nail
16a and 16b are provided so that a total of four can be attached and detached. 18a and 18b are long holes so that the member and the push button member 10 can be slid around the set screws 19a and 19b.

<Effect of Device> As described above, the present invention has the effect of facilitating the one-touch operation of the double door open type clasp because the push-button fitting for one-touch is mounted on the middle of the intermediate plate.

When released, the head portion of the band is pushed up by the push spring, which further facilitates the unfolding operation.

[Brief description of drawings]

FIG. 1 is a plan view showing a watch band using a double-door type one-touch clasp of the present invention, FIG. 2 is a perspective view showing the clasp in a semi-expanded state, and FIG. FIG. 4 is an enlarged transverse sectional view showing the clasping state of the clasp, FIG. 5 is a longitudinal sectional view taken along the line AA in FIG. 4, and FIG. 6 is the same. FIG. 7 is a longitudinal sectional view showing a state in which it is unraveled, FIG. 7 is a perspective view showing a second embodiment in a semi-deployed state, FIG. 8 is the same, perspective views of respective members, and FIG. Enlarged cross-sectional view of the push button metal part, 1 is an intermediate plate, 2a and 2b are opening and closing plates, 3a,
3b is a rotating member, 4a and 4b are bands, 5a and 5b are head portions, 6
a and 6b are hook grooves, 7 is a cover fitting, 8 is a brazed member, 9 is a V-shaped leaf spring, 10 is a push button member, 11 is a push button fitting, 12 is a screw, 13 is a screw hole, 14 Through holes, 15a, 15
b is a groove, 16a and 16b are latching claws, 17a and 17b are push springs, and 18a and 18b
Is a long hole, and 19a and 19b are set screws.

Claims (2)

[Scope of utility model registration request] 1. A double-door type clasp with a band sandwiched between opening and closing plates for pivoting at both ends of the intermediate plate, and a one-touch button fitting for fitting and retracting a hook is attached to the middle of the intermediate plate. A double-door type clasp for watch bands, characterized in that a groove is provided on the head portion of the band so that the hook can be hooked and unhooked. 2. The clasp according to claim 1, wherein a push spring for raising the head portion of the band when the latching pawl is released by being retracted is laid on the one-touch button fitting.