JPH0411110Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial field of application" The present invention relates to a device to prevent sliding doors from falling off in buildings.

"Problems to be Solved by the Prior Art and Ideas" Conventional shoji fall prevention equipment for buildings has a complicated structure using cams and links, and is expensive.

``Means that the invention attempts to solve'' Therefore, in view of the above-mentioned circumstances, the present invention aims to provide a device for preventing shoji from falling off with a simple structure, at low cost, and by bringing the locking piece and the opening piece into contact with each other in the case. Further, a rotating arm having an operating pin for a locking piece protruding from one end and an operating pin for an open piece protruding from the other end is placed over the contact portion of the locking piece and the open piece. It is housed in a case so as to be rotatable around an erected support shaft, and has an escape hole in the sliding direction for providing an insertion portion for the support shaft of the lock piece, and is perpendicular to the sliding direction of the lock piece. The operating pin of the locking piece is received in a guide groove carved in the same manner as shown in FIG.
A stopper is formed at the opening end of the open piece,
When the lock piece is protruded from the case so as to be locked, the operating pin of the lock piece passes through the rotational dead center with respect to the support shaft, and the rotating arm is set so as to come into contact with the stopper of the open piece.

``Function'' When the lock piece is pushed into the case, the other end of the lock piece protrudes outside the case so that it can be locked, the rotating arm rotates, and the operating pin of the lock piece reaches its rotational dead center relative to the spindle. pass. On the other hand, when releasing the lock, when the open piece is pushed into the case, the rotating arm rotates in the opposite direction, passes through the rotational dead center, and pulls the lock piece back into the case.

``Example'' As shown in FIG. 4, the shoji fall prevention device A of the present invention is attached to the upper stile member 2 of the shoji 1, and the lock piece 1
The window frame 12 is set so that it will not fall off if l, which is indicated by a two-dot chain line, protrudes.

This shoji fall prevention tool A consists of a case 13, a lock piece 11 and an open piece 14 housed in the case 13.
It consists of a rotating arm 15 and a support shaft 16 that stands up in the case 13 and serves as the center of rotation of the rotating arm 15.

Case 1 having opposing openings 21a and 21b
3 has a rectangular parallelepiped-shaped lock piece 11 and open piece 14.
are housed so as to be slidable in the axial direction in parallel with each other in contact with each other. Both the lock piece 11 and the open piece 14 have openings 21.
The end surfaces 11a and 14a on the a side are operating end surfaces. A rotary arm 15 having an operating pin 22 of the lock piece 11 protruding from one end and an operating pin 23 of the open piece 14 protruding from the other end is attached to the lock piece 11 and the open piece 14.
The insertion hole 2 in the upper wall of the case 13
The support shaft 1 is inserted into the case 13 and erected inside the case 13.
It is housed in a case 13 so as to be rotatable around 6.

The lock piece 11 and the open piece 14 have a recess 3 in the center in order to overlap the rotating arm 15.
1 and 32 are respectively recessed. An escape hole 33 in the sliding direction is formed at the contact portion of the lock piece 11 with the open piece 14 for providing an insertion portion for the support shaft 16. Further, a guide groove 34 is cut in the lock piece 11 so as to be orthogonal to the sliding direction, and the operating pin 22 of the lock piece 11 of the rotating arm 15 is received in the guide groove 34. A guide groove 35 is also carved in the open piece so as to be perpendicular to the sliding direction, and the guide groove 35
receives the operating pin 23 of the open piece 14 of the rotating arm 15.

The rotating arm 15 is rotatably provided around a support shaft 16 erected in the case 13, and as the rotating arm 15 rotates, the operating pins 22, 2
3, the lock piece 11 is inserted through the guide grooves 34 and 35.
And the open piece 14 slides in the axial direction of the case 13. That is, when the lock piece 11 is pushed into the case 13, the rotating arm 15 rotates about the support shaft 16, and the operating pin 23 causes the open piece 14 to slide toward the opening 21a. When the open piece 14 is pushed into the case 13, the operating pin 22 rotates and slides the lock piece 11 toward the opening 21a.

Note that a mounting plate 3 is provided on the opening 21a side of the case 13.
6 is provided, and mounting holes 37, 37 are bored in the mounting plate 36.

When locking, the locking piece 11 is pushed into the case 13 so that the other end protrudes from the opening 21b so that the state shown in FIG. 2 changes to the state shown in FIG. 3. As shown in FIG. 3, the operating pin 22 of the locking piece 11 of the rotating arm 15 is set so as to pass through the rotational dead center D with respect to the support shaft 16. Also, lock piece 1
1 is locked, the rotating arm 15 is moved to the stopper 4 formed at the end of the open piece 14 on the opening 21b side.
Stops at 1. After locking, even if a load is applied to the tip of the lock piece 11, the guide groove 34 collides with the actuating pin 22 that has passed the rotation dead center D, and the rotation arm 15
Since the rotary arm 15 is in contact with the stopper 41, the rotating arm 15 does not rotate in the unlocking direction, and the lock is never released.

When releasing the lock, when the open piece 14 is pushed into the case 13, the operating pin 22 passes through the rotational dead center D and opens the lock piece 11 so that the state shown in FIG. 3 changes to the state shown in FIG. Pull it back to the 21a side.

``Effects of the invention'' As mentioned above, the present invention has a simple structure in which the locking piece, the opening piece, and the rotating arm are housed in the case, so it is inexpensive. It is safe because it is set to pass through.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a specific embodiment of the present invention;
Figures 2 and 3 are plan views illustrating the operation of the device to prevent the shoji from falling off. Figure 2 shows the unlocked state, Figure 3 shows the locked state, and Figure 4 shows the shoji falling off. It is a longitudinal cross-sectional view showing a state in which the preventer A is attached to the window frame. 13...Case, 11...Lock piece, 14...
Open piece, 22...Lock operating pin, 23...
...open piece actuation pin, 15...swivel arm,
16... Support shaft, 33... Relief hole, 34... Guide groove for lock piece, 35... Guide groove for open piece, D...
...Rotation dead center, 41...Stoppa.

Claims (1)

[Scope of utility model registration request] Lock piece 11 and open piece 14 inside the case 13
The locking arm 15 is slidably housed in parallel in contact with the locking arm 15, and the locking arm 15 has an operating pin 22 of the locking arm 11 at one end and an operating pin 23 of the open arm 14 projecting at the other end. 11 and the open piece 14, and is housed in the case 13 so as to be rotatable around a support shaft 16 that stands upright over the contact area between the lock piece 11 and the open piece 14. An escape hole 33 is formed, and the operating pin 22 of the lock piece 11 is received in a guide groove 34 carved perpendicularly to the sliding direction of the lock piece 11, and is carved perpendicularly to the sliding direction of the open piece 14. The operating pin 23 of the open piece 14 is received in the guide groove 35, and a stopper 41 is formed at the end of the open piece 14 on the opening 21b side. 11
A device for preventing falling of a shoji screen, characterized in that the operating pin 22 is set so as to pass through a rotational dead center D with respect to the support shaft 16, and the rotation arm 15 is set to abut against a stopper 41 of the open piece 14.