JPH0730727U - 3-fold closure for wristbands - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the operability and safety by engaging with the wristwatch band fastener and adjusting the band length with the fastener itself while the watch is still worn on the wrist. [Structure] A slide plate having a notch in a groove built in a central portion of a lower plate of a fastener and an operation button having a pin are provided, and the lower plate can be locked with the pin in the notch. It has a clutch mechanism. [Effect] The band length can be gradually increased by pushing the slide plate into the lower plate with the wristwatch worn on the wrist.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fastener for a wristwatch band, and more particularly to a three-fold fastener that has good operability and high safety.

[0002]

[Prior art and problems]

 The conventional wristwatch band fasteners that have been used for diving have a slide plate built into the lower plate of the fastener that is pulled out in the length direction of the band, and the engaging position between the engaging portion and the lock piece The length of the band can be expanded and contracted by changing the length so that the length can be easily adjusted (Actually No. Sho 62-109615), but after the wristwatch is worn on the wrist, it is brought into closer contact with the wrist. Therefore, even if I tried to tighten the length, it was impossible to adjust the length without removing it from the arm. In particular, when wearing a dive watch and diving, the pressure around the arm is squeezed by the water pressure, so it is necessary to tighten it further easily during diving. In particular, when worn on a wet suit, the arm circumference was shortened by about 2 cm, and there was a high risk of slipping out of the arm unless tightened. 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 incorporates a slide plate having a saw-tooth cutout at the center of a bottom plate of a fastener, and the slide plate moves to the left and right with respect to the length direction of the band. A clutch mechanism that can form a locked pin that can be tightened and that can be tightened in the band length direction by pushing the slide plate is provided.

[0004]

【Example】

 Embodiments will be described below with reference to the drawings. In the drawing, reference numeral 1 is a lower plate, reference numeral 2 is an intermediate plate 2 rotatably connected to one end of the lower plate 1 by a hinge portion 3, and reference numeral 4 is connected to a free end portion of the intermediate plate by a hinge portion 5. Together with this, when the lower plate 1 and the middle plate 2 are folded and folded, a projection 6 is inserted into the hole 1d so as to cover the middle plate 2 and is locked by the operation buttons 14 and 15.

The lower plate 1 has a curved surface, and two square pieces are arranged in parallel to each other and have square holes 1e on the side surfaces of the operation portion. The square member 1f includes a bottom plate 1a, a cover 1b of the operation portion provided with holes 1d, The lower plate 1 is a slide plate 7 configured to be connected by a joint plate 1c on the free end side and slidable in the length direction of the band in the upper space of the bottom plate 1a and the bottom space of the cover portion 1b. Is inserted from the free end side.

The slide plate 7 is bent in the same manner as the lower plate 1, and a sawtooth-shaped notch 11 is formed at a constant pitch on a side surface of a groove 10 penetrating in a central portion in a band length direction. In addition, a pair of grooves 12 along the length of the band are formed in parallel on the outer side of these, and a cylinder for attaching the connecting piece of one wristwatch band piece A1 is provided at the end portion on the pull-out side.

The pin 8 is fixed to the operation button 9 inserted together with the operation buttons 14 and 15 in the square hole 1e of the lower plate 1 by welding, brazing, or integrally formed by metal injection molding. The protrusion 19 of the operation button 15 and the groove 9a of the operation button 9 engage the elastic force of the spring 16 for elastically sliding the operation plates 14 and 15 with the serrated notch 11 of the slide plate 7. As a result, elastic force is applied to the operation button 9, and the operation button 9 is urged in the direction of pressing outward from the central portion.

Further, the operation buttons 14 and 15 inserted into the square hole 1e together with the operation button 9 have a U-shape, and one end of the central portion of the operation button 14 and 15 are brought into contact with the inner side surface of the square bar 1f of the lower plate 1. A slidable protrusion is provided so that the inner slanted portion 17 can guide and lock the projection 6 that is fixed to the upper box 4 by welding or brazing. The spring 16 is inserted into the space 21 formed by combining the operation button 15 and the operation button 15 to obtain the repulsive force.

On the other hand, the middle plate 2 is formed in a shape conforming to the shape of the upper surface of the lower plate 1, and both side parts except the front end are raised and when the lower plate 1 is folded and folded, The rising portion 2a is adapted to engage with the groove 12 of the slide plate 7, and a hole 2b into which the projection of the upper box 4 can be inserted is provided at the center of the inner side of the free end portion thereof. .

Further, the upper box 4 is formed by bending a metal plate as a whole in a U-shape to cover the outer side of the lower plate 1 and the middle plate 2 in a folded state, and has operation buttons on the side surface. There is a groove 4a for accommodating 9,14,15, and a free end of the groove 4a is provided with a connecting portion 20 to which a connecting piece of the other wristwatch band A2 can be attached to adjust the band length stepwise. .

In the wristwatch band fastener thus configured, when the operation buttons 14 and 15 are simultaneously pressed as indicated by an arrow A in FIG. 4 from the locked state shown in FIG. When the slopes 17 of each of 15 are moved outward, the protrusions 6 of the upper box 4 that have been locked are released, and the lower plate 1, the middle plate 2 and the upper box 4 are expanded as shown in FIG. can do. When only one of the operation buttons is pressed, the projection 6 is released due to the slope of the one operation button, but the slope of the other operation button keeps the projection 6 locked and the fastener is expanded. I can't. In the state shown in FIG. 1, when the operation button 9 is pushed as shown by arrow B in FIG. 4, the pin 8 of the operation button 9 which is locked in the sawtooth cutout 11 of the slide plate 7 is moved to the central portion. Then, the clutch is released, and when the slide plate 7 is pulled in the band length direction in this state, the slide plate 7 can be pulled out from the lower plate 1 as shown by the chain double-dashed line in FIG. Therefore, when adjusting the band length, pull out the slide plate 7 while pressing the operation button 9 and releasing the clutch of the slide plate 7 while keeping the fasteners closed as shown in FIG. Then, by pushing the slide plate 7 in the band length direction to change the engagement position between the sawtooth cutout 11 and the pin 8 of the operation button 9, the screw plate 7 is gradually tightened while attached to the arm. Can be increased. The pin 8 of the operation button 9 is locked to the tip of the groove 10 of the slide plate 7 to prevent the slide plate 7 from coming off when the slide plate 7 is pulled out from the lower plate 1 to the vicinity of the tip. You can

On the other hand, as shown in FIGS. 1 and 4, in the slide plate 7, the pin 8 of the operation button 9 is locked in the sawtooth cutout 11, so that when tension is applied to the band, The pin 9 can be prevented from being accidentally pulled out by maintaining the locked state without being pinched.

Further, since the projection 6 of the upper box 4 is not released unless the operation plates 14 and 15 are simultaneously pressed, there is no fear that the fastener will be opened accidentally, and even when the fastener is opened, the so-called three-fold type Because of this structure, by keeping the entire band in a loop, it goes without saying that the entire wristwatch does not fall off the wrist of the wearer.

In the construction of the present invention, the material of each component is preferably a highly corrosion-resistant metal such as stainless steel or titanium, but engineering plastic or other material may be used as long as it has sufficient strength.

[0015]

[Effect of device]

 The present invention has the following effects due to the above-mentioned configuration. (1) With the wristwatch worn on one arm, with the other hand, push the slide plate with the sawtooth cutout in the groove into the lower plate of the fastener to tighten the band length stepwise. Is now possible. (2) When a force pulling the slide plate to the outside is applied to the slide plate, it has an effect of preventing the band length from extending. (3) We have realized a three-fold fastener for wristwatch bands that has excellent operability and high safety without a large increase in cost. (4) In terms of size, it could be realized without increasing the plane direction and the thickness direction as compared with the conventional fastener.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a locked state of a three-fold fastener for a watch band.

FIG. 2 is a front sectional view showing a state where a lower plate, a middle plate and an upper box of FIG. 1 are spread out.

FIG. 3 is a development view of FIG. 1.

FIG. 4 is a perspective view taken along the line II-II of FIG.

5 is a view taken along line I-I of FIG.

[Explanation of symbols]

 1 Lower Plate 1a Bottom Plate 1b Cover Part 1c Joint Plate 1d Hole 1e Square Hole 1f Square Bar 2 Middle Plate 2a Start-up Part 2b Hole 3 Hinge Part 4 Upper Box 4a Groove 5 Hinge Part 6 Projection 7 Slide Plate 8 Pin 9 Operation Button 9a Groove Part 10 Grooves 11 Sawtooth Notches 12 Grooves 13 Cylindrical Body 14 Operation Buttons 15 Operation Buttons 16 Springs 17 Slopes 18 Projections 19 Projections 20 Connections 21 Spaces A1, A2 Watch Band Pieces

Claims (1)

[Scope of utility model registration request] Attach the pin 8 attached to the fastener operation button 9 to the slide plate 7
The clutch mechanism that is locked in the notch 11 of the groove 10 provided in the above has a structure that prevents the slide plate 7 from being pulled out carelessly, and the band length is gradually changed while being worn on the arm. A three-fold fastener for watch bands that can be tightened.