JPH0730726U - Mechanism of the fastener for watch band - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the durability and operability by integrating the release push button and the spring with regard to the mechanism of the watch band fastener. [Structure] Partly having an operation button formed with an elastic body that can elastically slide in an arc shape, combine the operation buttons face to face, and press the two operation buttons at the same time It has a mechanism that can be released.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fastener for a watch band.

[0002]

[Prior art and problems]

 Usually, in order to release the fastener used in the watch band from the locked state, the upper part of the fastener, that is, the upper box or the upper plate, is hooked and released, and this is done by There was a risk of injury and there was a safety issue. Therefore, in recent years, a type has been developed in which a fastener as shown in FIG. 1 is provided with a pair of or one operation button, and the operation button can be easily released by simply pushing the operation button with a finger. -111301 etc.). The operation button moves smoothly using the elastic force of the coil spring or leaf spring provided in the space for sliding. However, when a leaf spring is used, if the spring has an unreasonable shape, the spring may crack and break, or dust may invade the spring section during repeated sliding movements. Caused a malfunction and had a problem with durability. In addition, it was not possible to say that the ease of assembly was good because the spring was not fixed to the operation button, regardless of the structure of the operation unit used to date. The present invention seeks to solve such a problem.

[0003]

[Means for solving the problem]

 In order to solve the above problems, the present invention integrates a spring portion for elastic sliding with an operation button, and provides an operation button having a shape capable of obtaining elastic force.

[0004]

【Example】

 Embodiments will be described below with reference to the drawings. First, FIG. 1 shows an embodiment of a fastener for a watch band using the mechanism of the present invention, in which reference numeral 1 is a lower plate, and reference numeral 2 is a part of the lower plate 1 rotatably connected by a hinge portion 3. The center plate 2 and the reference numeral 4 are connected to the free end of the center plate by a hinge portion 5 and cover the middle plate 2 when the lower plate 1 and the middle plate 2 are folded and the projection 6 has a guide hole 10. It is an upper box that is inserted into and is locked by the operation buttons 7 and 8.

In the embodiment, the operation buttons 7 and 8 provided with an integral spring mechanism for releasing the fastener for the watch band are inserted into the fastener lower plate 1. Details will be described.

The lower plate 1 has a curved surface, a square hole 9 is provided on the side surface of the operation portion, and a guide hole 10 for a protrusion fixed to the upper box is provided on the upper surface. The free end portion opposite to the hinge portion 3 is composed of a connecting portion 11 for connecting to the band piece.

Each of the operation buttons 7 and 8 has an arc-shaped elastic body 12 having a size so as to come into contact with the side surface of the square hole 9 when the operation button is inserted into the square hole 9 in a part of the inside of the operation portion, A step 14 is provided near the base of the elastic body 12 so as to regulate when the operation buttons 7 and 8 are slid, and the upper box 4 is welded to the inside of the other end opposite to the operation portion 7a or 8a. The slope 13 is formed so that the protrusion 6 fixed by attachment can be guided and locked.

As shown in FIG. 2, the operation button 7 of which one side is turned in the opposite direction is combined with the other operation button 8 so that the arcuate elastic body 12 is in contact with the side surfaces 7b and 8b of the operation button. Insert the operation parts 7a and 8a into the square holes 9 on the side surface of the lower plate so as to project.

In the operation portion spring mechanism of the fastener configured as described above, when the operation portions 7a and 8a are simultaneously pushed from the locked state as shown by the arrow A, the protrusion 6 that has been locked causes the slope 13 to move. And the arc-shaped elastic body 12 is pressed against the side surfaces 7b and 8b of the operation button 7 and 8, the radius of the arc becomes smaller, and the tip of the elastic body 12 moves in the direction of arrow B. The side surfaces 7b and 8b slide smoothly, and the side surfaces 7b and 8b hit the step 14 at the base of the elastic body 12 to restrict sliding, so that the tip of the elastic body hits the side surface of the step 14. It is possible to regulate the sliding without exceeding the elastic limit of the elastic body.

Further, when the projection 6 of the upper box 4 is locked by the operation buttons 7 and 8, if one operation button 7 or operation button 8 is pressed as shown by an arrow A in FIG. The button 8 or the operation button 7 is in a state in which the projection 6 is still locked, so that the fastener is not released accidentally.

In one embodiment, the mechanism for forming the arcuate elastic body 12 in a part of the operation buttons 7 and 8 has such a size as to hit the side surface of the square hole 9 and the other operation button 7 or operation button. Although it is configured to contact the side surfaces 7b and 8b of the operation button 8, the operation button 15 is not limited to the structure of the embodiment, and an arcuate elastic body is used as a separate component as shown in FIG. Elasticity that is integrated with the cutout portion 17 of the side surface of 16 by brazing or pressing, and the vicinity of the curved tip end contacts the side surface 15a of the other operation button 15 and the side surface 16a of the operation button 16. A structure having the body 18 may be used.

In the present invention, the material of the operation button portion is preferably a highly corrosion-resistant metal having elastic force such as stainless steel or super elastic nickel titanium alloy, but engineering plastic or other materials can be used if strength and durability are secured. It doesn't matter.

[0013]

[Effect of device]

 The present invention has the following effects with the above configuration. (1) By integrating the operation button of the fastener and the spring component, durability was improved and supple operability with a good feel was obtained. (2) Since the spring is not used as a single part, the total number of parts for the fastener is reduced, leading to cost reduction and improved assembly. (3) In terms of size, by utilizing the spring storage space effectively compared to the conventional spring mechanism, it was possible to achieve without increasing the size.

[Brief description of drawings]

FIG. 1 is a development view of a three-fold fastener for a watch band.

FIG. 2 is a perspective view taken along the line I-I of FIG.

3 is a sectional view taken along line II-II of FIG.

FIG. 4 is an application diagram of FIG.

[Explanation of symbols]

 1 Lower plate 2 Middle plate 3 Hinge part 4 Upper box 5 Hinge part 6 Protrusion 7 Operation button 7a Operation part 7b Side surface 8 Operation button 8a Operation part 8b Side surface 9 Square hole 10 Guide hole 11 Contact part 12 Elastic body 13 Slope 14 Step 15 Operation button 15a Side 16 Operation button 16a Side 17 Notch 18 Elastic body

Claims (1)

[Scope of utility model registration request] A mechanism for a watch band fastener, characterized in that an arc-shaped elastic body is formed in a part of the operation button, and an operation button integrated spring mechanism that elastically slides like a spring when the operation button is pressed is provided.