JP3011432U - Structure of the member for hanging and detaching in one-touch Nakadome of watch band - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention aims to provide a one-touch clasp for a watch band that minimizes friction and wear. According to the present invention, in a one-touch clasp of a watch band having an upright retaining claw and two retaining members for retaining the retaining claw from both sides, the two retaining members are rotatable. The structure of the hooking / unhooking member in one-touch clasp of a watch band, which is characterized in that it is configured with a pin.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a one-touch clasp of a watch band, and more specifically to a structure of a hanging member for the one-touch clasp.

[0002]

[Prior art]

 One-touch Nakadome for all kinds of watch bands, including three-fold type, two-fold type, double-door type and separate type, has traditionally been made of the same metal material as shown in Fig. 4 to provide the hooks and hook-and-detach members. It is what you have formed.

[0003]

[Problems to be solved by the device]

 However, if the pawl and the hook-and-hook member are made of relatively soft metal, especially light weight and pure titanium or titanium alloy that does not induce metal allergy, the sliding abutting parts will wear out and cannot be quickly removed. There was a problem of becoming.

[0004]

[Means for Solving the Problems]

 The present invention is a one-touch clasp of a watch band having an upright retaining claw and two retaining members for retaining and retaining the retaining claw from both sides. In order to solve such a problem,

[0005]

[Action]

 According to the present invention, since the latching member is formed by the rotating pin, when the clasp is clamped or unclipped by the latching member when folding or unfolding the clasp of the watch band, While the latching member rotates, the pawl can be clamped with a light force and released.

[0006]

【Example】

 Hereinafter, the embodiment will be described in detail with a three-fold type middle clasp made of pure titanium.

The spring box 12 is mounted between the vertical walls 11a and 11b of the upper body 10. Inside the spring box 12, there are formed push members 13a and 13b projecting to the outside of the hanging walls 11a and 11b, and slide members 14a and 14b assembled in a toe-like shape as shown in FIG. Coil springs 15a and 15b for tensioning are stretched between the outer ends of 14a and 14b, and play holes 16a and 16b are provided at the inner ends, respectively, so that pins 17 and 17 as the engaging / disengaging members can be freely rotated. Fit. In addition, 18 and 18 are plugs for preventing the pins 17 and 17 from being pulled out. Reference numeral 19 is an intermediate hole for exposing the pins 17 and 17, and 20a and 20b are holding claws, which are loosely fitted in the holes 21a and 21b provided inside the push portions 13a and 13b and are springs of the slide members 14a and 14b. It is designed to prevent it from being pulled out from the box 12. Reference numeral 22 is a middle plate rotatably connected to the upper body 10 by a pivot 23, 24 is a polymerization hole which is polymerized in the intermediate hole 19 when folded, 25 is a lower plate rotatably connected to the middle plate 22 by a pivot 26, 27 Is a retaining pawl cut out at a fixed position on the lower plate 25, and 28a and 28b are clock bands connected to the pivot 29, respectively.

When the three-fold type Nakadome is folded first, the upper body 10 is pressed while the middle plate 22 is overlapped on the lower plate 25 as shown in FIG. 3 (a). The pawl 27 hits the pins 17 and 17 through the overlapping hole 24 and the intermediate hole 19 and inserts them into the pins 17 and 17 while rotating and widening the pins 17 and 17, and the coils of the pins 17 and 17 are inserted. The return movement caused by the action of the springs 15a and 15b causes the pins 17 and 17 to be locked and folded as shown in FIG. 3 (b).

When unfolding the clasp, as shown in FIG. 3 (c), the push portions 13a and 13b on both sides are pushed to compress the coil springs 15a and 15b to expand the space between the pins 17 and 17 and the pawl 27. The upper body 10 is pivotally deployed together with the middle plate 22 from the lower plate 25 by releasing the latch.

Nakatome is folded and unfolded by the above-mentioned repetition.

[0011]

[Effect of device]

 As described above, according to the present invention, the two retaining members for engaging and disengaging the retaining claws constituting the one-touch clasp of the watch band from both sides are composed of rotatable pins. As the pin rotates and the pawl is inserted and released to minimize friction between them, even if the clasp is formed from a metal that easily wears away, such as pure titanium metal, it will not be possible for a long time. The effect of continuing to hang normally is produced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a three-fold type of the present invention.

FIG. 2 is a rear perspective view showing the same before the slide member and the spring box are assembled.

FIG. 3A is a cross-sectional view showing a state in which it is being folded, FIG. 3B is a state in which it is hooked, and FIG. 3C is a state in which it is being released.

FIG. 4 is a diagram illustrating a conventional example.

[Explanation of symbols]

 10 is upper body 11a, 11b is vertical wall 12 is spring box 13a, 13b is push part 14a, 14b is slide member 15a, 15b is coil spring 16a, 16b is play hole 17, 17 is pin 18, 18 is plug 19 Intermediate holes 20a and 20b are presser pawls 21a and 21b, hole 22 is intermediate plate 23, pivot 24 is superposed hole 25, lower plate 26 is pivot 27, stop pawl 28a, 28b is watch band 29, pivot 29 is pivot.

Claims (1)

[Scope of utility model registration request] 1. A one-touch clasp of a watch band having an upright retaining claw and two retaining members for retaining the retaining claw from both sides so that the two retaining members are rotatable. A structure of a member for hanging and detaching in one-touch Nakadome of a watch band, which is characterized by being composed of pins.