JPS642920Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a crescent rotation prevention device.

Current crescent locks can be unlocked by rotating the operating rod in the unlocking direction without fully rotating it to the rotation stop position. If the shoji was opened or closed in this condition, the crescent locks would collide with other shojis, resulting in damage to the crescent locks.

In order to deal with these shortcomings, Jikkosho has traditionally
Various crescent rotating devices have been proposed, such as the device disclosed in Japanese Patent No. 47-36560, but all of them have complicated structures and are difficult to install. This invention has thus been devised to address these conventional problems, and will be explained below based on the embodiments shown in the drawings.

In FIG. 4, reference numeral 1 indicates a rotation prevention unit.

The rotation prevention unit 1 is composed of a rectangular cylindrical case 2 whose upper and lower ends are open, and a slide rod 3 and a rotary rod 4 mounted inside the case 2. That is, inside the square tubular case 2, a slide rod 3 having a protrusion 6 that protrudes outward extends across opposing side walls 5, 5 of the case 2, and is attached by a spring 7 in the direction of the protrusion 6. It is attached with force.

Furthermore, a presser pawl 8 is formed in the case 2 at the end of the slide rod 3 on the opposite side to the direction of the protruding portion 6 .

Further, reference numeral 4 indicates a rotary rod, and this rotary rod 4 is mounted at a position below the mounting position of the slide rod 3 and perpendicular to the slide rod 3. A contact piece 10 is formed on the rotary rod 4 and comes into contact with a presser claw 8 of the slide rod 3. Also, on one end surface 9 of this rotating rod 4, a shaft portion 1 of a crescent 11 is provided.
A mounting hole 13 into which 2 is inserted is bored. Note that the rotating rod 4 is connected to the sliding rod 3 as shown in Fig. 5.
It may be provided above the mounting position.

The rotation prevention unit 1 is shown enlarged in FIG. 4, and is normally sized to fit into the hollow portion 15 of the stile 14.

Thus, the above-mentioned rotation prevention unit 1 is fitted into the hollow part 15 of the joining frame 14 and fixed. The crescent 11 is mounted by fitting the shaft portion 12 of the crescent 11 into the mounting hole 13 formed in the end surface 9 of the rotating rod 4.

With the above in mind, the state of use of the present invention will now be described. Normally, it stands still in the state shown in Figure 2. That is, in a state in which the operating rod 16 of the crescent 11 does not protrude from the width direction of the connecting frame 14,
In addition, in order to prevent the crescent 11 from rotating, the presser pawl 8 of the slide rod 3 and the contact piece 10 of the rotary rod 4 are brought into contact and locked.

When the shoji is closed from this state, the protruding portion 6 comes into contact with the side wall 17 of the other stile 14' and exits. Then, the slide rod 3 moves within the hollow part 15 of the joining frame 14, the presser pawl 8 and the abutment piece 10 are disengaged from each other, and the crescent 11 can freely rotate. All you have to do is lock it in this state.

Thus, the present invention consists of the above configuration. And with this crescent rotation prevention device, the operating lever will not rotate unless the shoji is closed and the facing stile is in the locking position, and when the shoji is unlocked and the shoji is opened, the operating lever is in the unlocked position. Since the presser claw locks the abutting piece so that it does not rotate, the crescent is in a fixed state, and there is no risk of damaging the crescent when opening and closing the shoji.

And such a rotation prevention device with a simple structure,
And it can be produced at low cost.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional example, Fig. 2 and Fig. 3 are schematic views showing the state of use of the present invention, Fig. 4 is an exploded perspective view of the present invention, and Fig. 5 is an enlarged perspective view of the main part showing another embodiment of the present invention. 1...Rotation prevention unit, 2...Case, 3...
...slide rod, 4...rotating rod, 5...side wall, 6...
...protrusion, 7...spring, 8...pressure claw, 9
. . one end surface of the rotating rod, 10 . . . abutment piece, 11 . . .
Crescent, 12...shaft portion, 13...mounting hole, 1
4, 14'...joint frame, 15...hollow portion of joint frame, 16...operating rod, 17...side wall.

Claims (1)

[Scope of utility model registration request] A slide rod having an outwardly projecting protrusion is mounted in a cylindrical case between opposing side walls of the case, and is biased toward the protrusion by a spring, and one end of the slide rod inside the case is mounted. On the side, a hanging presser claw is formed, and on the other hand, it is perpendicular to the slide rod and has an abutting piece that comes into contact with the presser claw, and the crescent shaft part is fitted to one end surface. A rotation prevention unit formed by attaching a rotary rod having a hole is installed in the stile, and the protrusion comes into contact with the side wall of another stile facing this stile, making it possible to exit. A crescent rotation blocking device characterized in that a rotating rod to which the crescent is attached is rotatable when the slide rod slides to release the abutting state between the presser claw and the contact piece.