JPH0593225U - Nakadome structure - Google Patents

Abstract

(57) [Summary] [Object] The present invention provides a clasp structure for a wristwatch band, which has a push button with improved operability. [Structure] Push button 1 placed on Nakadome main body 11.
3, a clasp composed of an arm 14 movable by the pressing force, a leaf spring 16 for returning the position of the arm 14 to the original position, and a front cover 12. The front cover 12 has a catch 12a on its lower surface.
The front lid 12 is hooked on the arm 14 arranged on the clasp body 11. When the push button 13 is pressed, the hook portion 12a and the arm tip 14a are unlocked. [Effect] Even if the precision of Nakadome components varies, the function is stable, and the latch can be released by operating the push button, improving operability.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a clasp structure for a wristwatch band.

[0002]

[Prior Art]

 Conventionally, as shown in FIG. 5, one mounting member 3 is connected to one end of one band 1 via a middle piece 2, and a recess 4 is formed at the tip of the mounting member 3 to form a recess 4 of the mounting member 3. The locking plate 6 is connected to the other end 8 of the other band 7 via the middle piece 9 to connect the locking plate 10 to the other end 8 of the other band 7. Nakadome of a wrist watch, in which a recess 111 is formed at the tip and a locking pin 112 is installed in the recess 111 of the locking metal fitting 10, is known from Japanese Utility Model Publication No. 60-1611.

[0003]

[Problems to be solved by the device]

 In the conventional clasp, the locking plate 6 is inserted into the recess 111 of the locking fitting 10, the connecting piece side portion 5a of the connecting piece 5 and the engaging piece 113 are engaged, and the band is engaged. It is difficult to process the locking plate 6 and the connecting piece 5, and the component dimensions tend to vary. Also, when the band is attached, the engaging piece 113 provided at one end of the locking plate 6 and the connecting piece 5 are engaged, but due to the variation of the parts, the engaging force becomes excessive and the locking cannot be released. There was a drawback that accidents such as injuries or fingertip injuries occurred. An object of the present invention is to solve the above-mentioned drawbacks and provide a clasp structure with improved operability.

[0004]

[Means for Solving the Problems]

 In this invention, the clasp main body is attached to the tip of one band, the front lid is rotatably attached to the clasp body, and the U-shaped locking part attached to the tip of the other band is With a clasp structure that is attached by sandwiching it between the clasp body and the front lid, two push buttons are attached to both sides of the clasp body, and two arms are rotated inside the two push buttons. The leaf springs are attached so that they can be attached to each other and the two arms are pushed out from the inside of the two arms. Only when the two push buttons are pressed at the same time with the tip of the arm hooked on the catch provided on the tip of the front lid, the catch on the hook and the tip of the two arms are released. It is characterized by.

[0005]

【Example】

 An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a partially cutaway plan view showing a clasp structure of the present invention, and FIG. 2 is a sectional view taken along the line 1A-A of FIG. For Nakadome, the Nakadome main body 11 is attached to the front end of one band, and the front lid 12 is rotatably attached to the Nakadome main body 11 as well, and the U-shaped locking portion attached to the tip of the other band. In the clasp structure which is attached by sandwiching 17 between the clasp body 11 and the front lid 12, two push buttons 13 are attached to both sides of the clasp body 11, and the two push buttons 13 are attached. A leaf spring 16 is attached to the inner side of each of the two arms 14 so as to push the arm 14 from the inside. The front cover 12 is hooked to the clasp main body 11 via a catch 12a and an arm tip 14a. The unlocking will be described with reference to FIGS. 3 and 4. When the arm tip 14a hooked on the catch 12a provided on the tip of the front cover 12 is pushed simultaneously by the two push buttons 13, The arm 14 rotates about the pin 15 as a fulcrum toward the center of the clasp main body 11, and the arm tip 14a retracts from the catch 12a to release the clasp main body 11 from the front lid 12. To be done.

[0006]

[Effect of the device]

 As described above, according to the present invention, even if the accuracy of the component parts of the clasp is varied, the function is stable, and the engagement can be released by operating both push buttons, greatly improving the operability. Also, since the structure is simple, a thin clasp can be used, and the degree of freedom in design is improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing a hooked state of a clasp body and a front lid of a clasp structure according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a partially cutaway plan view showing a state in which the latch is released by pressing the push button according to the present invention.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a perspective view of a conventional clasp.

[Explanation of symbols]

 11 Nakadome Main Body 12 Front Lid 12a Hooking Part 13 Push Button 14 Arm 14a Arm Tip 15 Pin 16 Leaf Spring 17 Locking Part

Claims (1)

[Scope of utility model registration request] 1. A clasp body is attached to the tip of one of the bands, a front lid is rotatably attached to the clasp body, and a U-shaped locking portion attached to the tip of the other band is provided. In the clasp structure attached between the clasp body and the front cover, two push buttons are attached to both sides of the clasp body, and two arms are rotated inside the two push buttons. It is possible to attach the leaf springs from the inside of the two arms so as to push them apart from each other, and attach the tip of the arm that is hooked to the catch provided on the tip of the front cover to the two push buttons. , The clasp structure of the band, wherein the hook portion and the tip ends of the two arms are released only when they are pushed simultaneously.