JPH06125804A - Center clasp fixture of watchband - Google Patents

Abstract

PURPOSE:To constitute the center clasp fixture so that it can be detached without putting strength with a nail or a fingertip. CONSTITUTION:The upper side movable detaining member 2 and the lower side movable detaining member 3 are coupled so as to be rotateble, and in the lower side movable detaining member 3 of a middle part of a movable part, a projecting part 3c which becomes its supporting point is provided, and also, a fitting part having a vertical coupling hole, which becomes a rotary supporting point is provided, and in the vicinity of the projecting part 3c, a recess hole 3d is provided. In such a way, it is unnecessary to use a nail at the time of attaching and detaching the center clasp fixture, and also, an increase of thickness of the center clasp fixture itself can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a clasp for a watch band.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8, a clasp 5 has an upper movable locking member 5 rotatably attached to both side plates 5b.
There is known a structure in which there is a removal projection 5c provided on a, the removal is performed with a nail or a fingertip, and there is a space or a projection into which the nail or the fingertip is inserted.

[0003]

However, the conventional clasps for clasps have the following problems. (1) It is difficult for people with short nails and weak people to remove only the space to remove with nails. (2) Providing projections that can be removed with nails or fingertips has been a problem in terms of safety while carrying.

Therefore, in order to solve such a conventional problem, an object of the present invention is to structure without relying on a space or a projection to be removed by a nail or a fingertip and by simply pushing to apply the lever principle.

[0005]

In order to solve the above problems, the present invention takes the following means. (1) In the movable locking member of the clasp, the upper movable locking member and the lower movable locking member have a rotatable connection, and the upper movable locking member and the lower movable locking member are A structure in which a supporting portion serving as a fulcrum of the lower movable locking member toward the upper movable locking member is provided substantially at the center between the bite coupling side and the movable portion. (2) At the lower movable locking member facing the fixed locking member attachment portion of the upper movable locking member, in order to prevent the thickness of the entire clasp fitting from increasing due to the securing of the rotation width of the upper movable locking member. The structure has a hole at the end.

[0006]

[Function] In the clasp metal fitting configured as described above,
Pushing the vicinity of the movable portion of the upper movable locking member from the outside toward the lower movable locking member side, the upper movable locking member is supported from below by the protrusion of the central portion of the lower movable locking member at the center. Therefore, by the principle of leverage, the biting coupling portion of the upper movable locking member is released upward, that is, the biting coupling is released. On the contrary, in order to bitely connect the upper movable locking member to the lower movable locking member, the vicinity of the biting coupling portion of the upper movable locking member is fixed from the outside to the lower movable locking member like a conventional clasp. Push in the direction.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an engagement state of an embodiment of a clasp fitting of a watch band according to the present invention, which is characterized in that there is no protruding portion for releasing the engagement on the upper surface side. The fixed locking member 1, which is a first locking member made of a frame body attached to one end of the band piece 4, stores the upper movable locking member 2 in the frame body and attaches it to the band piece 4 at the other end. The width and height of the lower movable locking member 3 are substantially equal to each other. The upper movable locking member 2 and the lower movable locking member 3 form a second locking member.

FIG. 2A is a perspective view of the fixed locking member 1, which is a fixed locking pin 1 which becomes a hook portion in the width direction in the frame body.
a is provided. FIG. 2B is a perspective view showing a state in which the upper clasp 2 and the lower clasp 3 are connected to each other with the clasp clasp disengaged.

FIG. 3 (a) is a perspective view of the upper movable locking member 2, which has a back surface slightly curved in the longitudinal direction, and has a support shaft at one side in a notch provided in the width direction. Mounting part 2a
Is provided, and the other side has a bite locking portion 2e having a rounded tip end of an upright surface, and an interrupt groove 2f is provided at the center of the upright surface. In the upper movable locking member 2, a pin-shaped pin fixing plate 2c having a tip end hook shape is rotatably provided by a pin inserted into a protrusion provided on the inner surface of the upper movable locking member 2 in the vicinity of the mounting portion 2a. Is held. On the inner surface of the middle of the upper movable locking member 2, pin-hooked pin-shaped locking portions 2b, which are engaged with the fixed locking pin 1a, are provided at regular intervals. Further, for pin fixing, the dowel 2d is provided with a constant distance from the pin engaging portion 2b, and the pin fixing plate 2c is rotated to engage the hooked portion at its tip to engage the pin fixing plate 2c. It is supposed to stop.

FIG. 3 (b) is a perspective view of the lower movable locking member 3. The lower movable locking member 3 made of a plate-like member has an upper movable locking member in the widthwise direction at the standing portion at the tip. Attachment part 2a of member 2
Is provided with a coupling portion 3a having a vertically-long coupling hole into which the pin is inserted, a protrusion portion 3c is provided in the middle portion, and is a space for escaping the pin fixing plate 2c from the rising portion to the middle portion with the protrusion portion 3c interposed therebetween. A hole 3d is provided. The escape hole 3d may be a recess.

At the base end of the lower movable locking member 3, there is provided a band piece mounting portion 3e having a recess for engaging with the band piece.
A pair of bite dowels 3b facing each other in the width direction are provided on the bottom of the side surface to form a locking portion. 4 is shown in FIG.
FIG. 9 is a cross-sectional view taken along line AA ′ in FIG. Shows.

FIG. 5 shows the upper movable locking member 2 in FIG.
By pressing the pressing portion 2g near the upper mounting portion 2a in the direction of the arrow, the upper movable locking member 2 rotates about the engaging portion with the protruding portion 3c as a fulcrum, and the engaging portion 2e is covered with a dowel. Three
It shows a state in which the engagement pin of the attachment portion 2a is disengaged from the engagement with b and is positioned below the engagement hole of the engagement portion 3a.

FIG. 6 is a sectional view taken along the line BB 'of FIG. 1, in which the pin fixing plate 2c is engaged with the dowel 2d having the pin fixing plate and the fixing locking pin 1a is one of the pin locking portions. 2b shows the state of being engaged with 2b. 7 is the same as FIG.
4 is a cross-sectional view showing a state when the engagement described in the above is disengaged, and the pin fixing plate 2c is inserted into the clearance hole 3d of the lower movable locking member 3. FIG.
Indicates that the item contains.

[0014]

As described above, according to the present invention, in the clasp of the clasp for a watch band, there is provided an upper movable locking member to which the principle of leverage is applied, and the upper movable locking member is coupled. A non-circular hole is formed in the lower movable locking member, and the lower movable locking member has a space for escaping the pin fixing plate, and has the following effects. (1) The engagement is released simply by pushing the other end of the upper movable locking member, which is simple and does not damage the nail or fingertip. (2) Since it is not necessary to release the engagement with the nail or the fingertip, a protrusion for releasing the engagement with the nail or the fingertip is unnecessary,
There is no risk of injury when touching the skin. (3) By providing an escape hole at the center of the lower movable locking member, it is possible to prevent the thickness of the clasp itself from increasing.

[Brief description of drawings]

FIG. 1 is a perspective view of a clasp of a watch band clasp according to the present invention in a locked state.

FIG. 2 is a perspective view showing a state in which the locking clasp of the watch band of the present invention is unlocked and separated.

FIG. 3 is a perspective view of an upper locking member and a lower locking member of the movable locking member of the watch band clasp according to the present invention in a separated state.

FIG. 4 is a sectional view of the section AA ′ of FIG. 1 in a locked state.

5 is a cross-sectional view of the cross section AA ′ of FIG. 1 in an unlocked state.

6 is a cross-sectional view of the cross section taken along the line BB ′ of FIG. 1 in a locked state.

7 is a cross-sectional view of unlocking of the cross section of BB 'of FIG.

FIG. 8 is a perspective view of unlocking of a conventional watch band clasp.

[Explanation of symbols]

 1 Fixed Locking Member 1a Fixed Locking Pin 2 Upper Movable Locking Member 2a Mounting Part 2b Pin Locking Part 2c Pin Fixing Plate 2d Pin Fixing Plate Bait Dowel 2e Baiting Locking Part 2f Interruption Groove 2g Pressing Point 3 Lower movable locking member 3a Coupling part 3b Bawl 3c Projection part 3d Escape hole 3e Band piece mounting part 4 Band piece 5 Conventional middle clasp 5a Upper movable locking member 5b Side plate 5c Removal projection part

Claims (2)

[Claims] 1. A watch band comprising a first locking member mounted on one end of the watch band and a second locking member mounted on the other end of the watch band, which are locked and coupled to each other. In the fastener, the first locking member has a hook portion at its tip and a watch band mounting portion at the other end, and the second locking member has an upper movable member and a lower movable member. The lower movable member has a mounting portion at the base end thereof to the other end of the watch band and a locking portion at which one end of the upper movable member is bite-coupled, and at the tip thereof, The other end of the upper movable member has a coupling part that is rotatably attached with play, and a protrusion that abuts the upper movable member in the middle, and the upper movable member has one end of the lower movable member. Attached to the engaging part that bites to the engaging part and the connecting part of the lower movable member at the other end Has a biasing portion, the inside, clasp fitting watchband and having a locking portion for locking the engaging portion of said first engaging member. 2. In the second locking member, an escape hole or a recess is formed in the lower movable locking member to prevent interference when locking the upper movable locking member and the lower movable locking member. The clasp of clasp according to claim 1, characterized in that it has.