JPS6142406Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a clasp device for a watch band.

Some watch bands use a push button to attach and detach the clasp, but when carrying the watch, the push button sometimes hits an object and is pressed, causing the watch to fall off the wrist.

The present invention was devised in view of the above problems, and aims to provide a highly reliable clasp device by adding a device to the clasp that prevents the push button from being pressed when unnecessary. be.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 to 3 show an embodiment of the present invention,
Figures 1a and 1b are a plan view and a side view of the main part showing a partial cross section of the internal structure of the clasp device, respectively;
The figure is a perspective view when one band and the other band are separated, and FIG. 3 is a perspective view when one band and the other band are combined.

In FIG. 1, a substantially U-shaped fixed locking member 2 is fixed to the end of one band 1, and is formed at both ends of the fixed locking member 2, and extends in the direction of the other band 3. A locking pawl 2a that bends downward into an L shape is formed at the tip of the protruding portion.

A through hole 3a is bored at the end of the other band 3, and both ends 4 of the spring rod 4 inserted into the through hole 3a are inserted into the through hole 3a.
The clasp body 5 is connected to the end of the other band 3 by inserting the cylindrical clasp body 5 into a pair of opposing through holes 5b formed in the side wall 5a of the cylindrical clasp body 5.

Another pair of opposing through holes 5c are bored in the side wall 5a of the clasp body 5, and both ends 8a of a pin member 8 supporting a pair of movable locking members 6 and a coil spring 7 are fitted into the through holes 5c. I'm wearing it.

A coil spring 7 is installed inside the pair of movable locking members 6.
are disposed, and the pair of movable locking members 6 are pressed by the coil spring 7 and abut on the side walls 5a of the clasp body 5, respectively.

Each movable locking member 6 is formed into a U-shaped cross section by opposing side walls and a flat portion between the opposing side walls, and a shaft hole 6b is bored in the opposing side wall 6a to accommodate the pin. It is supported by the member 8, and a U-shaped locking pawl 6c that locks with the locking pawl 2a of the fixed locking member 2 is formed from the middle part of a plane portion formed between the opposing side walls 6a. , a pressing piece 6d extending from one side wall 6a and having a U-shaped cross section extends outward to press against the side wall 5 of the clasp body 5.
It protrudes outward from one of the through-holes 5d formed opposite to a.

Both ends 4a of the spring bar 4 are connected to the side wall 5 of the clasp body 5.
The projecting portions of both ends 4a are inserted into through-holes 9b formed opposite to the opposing side walls 9a of the substantially U-shaped frame 9, and the frame 9 is inserted into the clasp main body. It is rotatably attached to the outside of 5.

By rotating the frame body 9 around the spring bar 4, its opposing side walls 9a can be inserted into the inside of the pressing piece 6d of the movable locking member 6.

In the embodiment, the tip of the pressing piece 6d protrudes outside the side wall 9a of the frame 9, but if necessary, the thickness of the side wall 9a of the frame 9 can be increased to overlap the pressing piece 6d of the side wall 9a. It is also possible to make a counterbore only in this portion so that the tip of the pressing piece 6d does not protrude outside the frame 9.

To explain how to attach and detach the clasp device of the present invention having the above-mentioned configuration, first, with the frame 9 raised up as shown in FIG. The locking claw 2a of the fixed locking member 2 fixed to the end of the band 1 is inserted into the cylindrical shape of the clasp body 5, and by loosening the pressing force of the pressing piece 6d, the locking claw 2a is inserted into the clasp body. 5 is locked to the locking claw 6c of the movable locking member 6 built in,
When the frame body 9 is folded down as shown in FIG. 3, attachment of the band is completed.

At this time, the side wall 9a of the frame 9 is placed inside the pressing piece 6d.
Since it becomes impossible to press the pressing piece 6d by entering the band, there is no fear that one band 1 and the other band 3 will separate even if an object hits the pressing piece 6d from the outside.

Note that the frame body 9 is held in contact with the inside of the pressing piece 6d by frictional force.

Next, to separate one band 1 and the other band 3, raise the frame 9 as shown in FIG.
This can be easily done by simply releasing the locked state between the movable locking member 6 and the locking pawl 6c.

As detailed above, the clasp device of the present invention is equipped with a frame on the outside of the clasp body that prevents the pressing piece as a push button from being pressed, so even if an object hits the pressing piece when carrying the watch, There is no need to worry about the wristwatch falling off the wrist due to the band separating from the other band, and the reliability of the clasp device can be improved.

Furthermore, since one of the bands can be held with one finger by hooking one's finger on the frame when the band is attached, there is an advantage that the band is easier to attach.

As mentioned above, the gist of the present invention is to prevent the pushbutton, which also protrudes from the side wall of the clasp body, from being retracted by the frame pivoted to the side wall of the clasp body, so the fixed locking member and The shape of each movable locking member that locks to the fixed locking member and the locking/disengaging mechanism within the clasp main body are not limited to the above embodiments, and various mechanisms may be employed.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention,
Figures 1a and 1b are a plan view and a side view of the main part showing a partial cross section of the internal structure of the clasp device, respectively;
The figure is a perspective view when one band and the other band are separated, and FIG. 3 is a perspective view when one band and the other band are combined. 1, 3... Band, 2... Fixed locking member, 4...
... Spring bar, 5 ... Neck clasp body, 6 ... Movable locking member, 7 ... Coil spring, 8 ... Pin member, 9 ...
frame body.

Claims (1)

[Scope of utility model registration request] A fixed locking member is fixed to the end of one band,
A clasp body incorporating a movable locking member capable of locking with the fixed locking member is coupled to an end of the other band;
The pressing piece of the movable locking member extends from the side wall of the movable locking member and protrudes from the side wall of the clasp main body, and the frame body rotatably pivoted on the outside of the clasp main body supports the pressing piece. A clasp device for a watch band, characterized in that it is configured to be able to be held in place.