JPH0421987Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a door lock that is attached to the door.

[Conventional technology]

As shown in Japanese Utility Model Application Publication No. 55-48906, in conventional door locks, after entering the room, the push rod is moved forward by an operation on the indoor side, and the push rod and the unlocking arm are engaged, and the lock is unlocked by the outdoor handle. The latch is prevented from rotating in the unlocking direction via the lock arm.

In addition, as shown in Public Relations Publication No. 51-49267,
When the operating plate is slid up and down using the knob, the lock piece rotates in and out, allowing locking and unlocking from the indoor side.When the key is inserted into the cylinder lock and the rotating body is turned, the lock and pinion are activated. The operation plate slides up and down, and the lock piece rotates in and out in the same way as described above, so it can be locked and unlocked from the outside.

[The problem that the idea attempts to solve]

According to the former type of lock mentioned above, the lock prevents the outdoor handle from rotating, and there is no lock mechanism that prevents the engaged latch from rotating in the unlocking direction, so the lock is easily unlocked. It was hot.

Further, even in the case of the latter type of lock, there is a problem that the lock is easily unlocked because there is no locking mechanism that prevents the lock pieces in the engaged state from rotating in the unlocking direction, as described above.

Furthermore, due to the above-mentioned problem, there was a problem that a separate lock was required.

Therefore, the object of this invention is to provide a door top lock that prevents the engaged rocking plate from rotating in the disengagement direction after the door is closed.

[Means to solve the problem]

In order to solve the above problems, this invention has a door frame side metal fitting consisting of a mounting seat plate, a protruding piece protruding from the surface of the mounting seat plate, and a horizontal pin whose end is supported by this protruding piece. , a mounting box having an opening into which a protruding piece is fitted, a rocking plate which is incorporated into this box and whose end located at the back of the box is rotatably attached to a horizontal axis, and when the door is closed, A hook part is provided at the tip of the rocking plate that engages with a pin on the metal fitting on the door frame side and detaches from the pin when the door is opened, and a hook part is provided at the tip of the rocking plate so that it can be detached from the pin when the door is opened. A rolling weight that is moved to the tip, a stopper that is provided so that the tip of the hook part stops at a position lower than the pin,
A door lock is constructed of an arc-shaped edge provided on the tip edge of a swinging plate so as to rotate the swinging plate in the upright direction by contact with a pin. The slider is provided with a slider that is moved up and down by a camera that is operated from the top, and a stopper device is provided on the slider to prevent the swing plate from rotating in the upright direction as the slider is lowered.

[Effect]

As the door closes, just before closing, the tip of the swing plate is brought into contact with the pin, and the swing plate is rotated in the upright direction, and when the hook part rides on the pin and finishes passing, the door frame side When the door-side vertical stile collides with the vertical stile, the force of the collision causes the rolling weight to move toward the hook, and the rolling weight maintains the engagement state between the pin and the hook when the door is closed. .

When the door is closed, the slider is lowered by operating the cylinder lock, and a stopper device is used to prevent the tip of the rocking plate from rising to lock the door, and the door is unlocked by raising the slider. It is something.

〔Example〕

In the figure, A is the metal fitting on the door frame side.

The door frame side metal fitting A is composed of a mounting seat plate 14, a protruding piece 2 protruding from the surface of the mounting seat plate 1, and a horizontal pin 3 supported at the tip of this protruding piece 2. .

In the illustrated case, the pin 3 has both ends supported by the pair of protrusions 2, 2, but it may be of a cantilever type.

B is the door side metal fitting.

The above door side metal fitting B has an opening 4 into which the protruding piece 2 is fitted.
a mounting box 5 having a mounting box 5; a rocking plate 7 which is incorporated into the box 5 and whose end located at the back of the box 5 is pivotally supported via a horizontal shaft 6;
A hook part 8 is provided at the tip of the rocking plate 7 so that it engages with the pin 3 when the door is closed, and disengages from the pin 3 when the door is opened. A rolling weight 9 that is moved from the front end of the upper edge shaft 6 to the tip, and a hook portion 8
A stopper 10 is provided so that the tip of the pin 3 is stopped at a lower position than the pin 3, and a stopper 10 is provided so that the tip of the pin 3 is stopped at a position lower than the pin 3.
and an arcuate edge 11 provided to rotate the swing plate 7 in the upright direction upon contact with the swing plate 7.

In the case shown in the figure, the stopper 10 has pieces extending downward in series from the end of the rocking plate 7, and the rear edge of the piece abuts against the inner surface of the rear wall of the box 5, but other configurations may also be used. You can.

Further, in the box 5, a slider 13 is provided which is moved up and down by a cylinder lock 11' of the door side metal fitting B which is operated from outside and a camera 12 which is operated from inside the room.

The slider 13 can be moved up and down by providing a vertical elongated hole 14 in the box 5 as shown in the figure.
The rotary body 1 is rotated by the key of the cylinder lock 11'.
A free-rotating pinion 16 is fitted into the pinion 16, a notch 17 is provided in a range of approximately 130° from the end face of the pinion 16, and a protrusion 18 protruding from the outer periphery of the rotating body 15 is fitted into the notch 17. A rack 19 hanging from the slider 13 is engaged with the pinion 16, and when the photographing 12 is operated, the pinion 16 is freely rotated to raise and lower the slider 13, and the protrusion 1 is attached to the edge of the notch 17 by operating the key.
8 is engaged, the slider 13 is moved up and down together with the rack 19 by the rotating pinion 16.

Furthermore, the slider 13 has the slider 13
A stopper device 20 is provided to prevent the swinging plate 7 from rotating in the upright direction as it descends.

The above-mentioned stopper device 20 consists of a horizontal pin 21 fixed to the slider 13 and a stopper 1 as shown in the figure.
This is done by bringing the protrusion 22 protruding from the front edge of the lower end of the 0 into contact with each other.

In the figure, reference numeral 23 denotes a recessed portion provided from the front end of the upper edge shaft 6 of the rocking plate 7 toward the tip;
A rolling weight 9 of a metal ball is moved between both ends of the ball.

The door lock according to this invention has the above-mentioned configuration, and the door frame side metal fitting A is attached to the vertical stile of the door frame a, and the door side metal fitting B is attached to the vertical stile of the door b.

At this time, a box 5 is embedded in the stile of door b.

When the door b is slid and closed, the tip of the swing plate 7 comes into contact with the pin 3 just before closing, and the arcuate edge 11
As a result, the tip of the swing plate 7 is pushed up.

Then, the tip of the hook portion 8 rides on the pin 3, and when the tip of the hook portion 8 finishes passing over the pin 3, the rocking plate 7 is rotated in the direction of falling down due to its own weight, and the hook portion 8 is placed on the pin 3. Lock (as shown in Figure 3).

At this time, the vertical stile of door b collides with the vertical stile of door frame a, and the collision force causes the weight 9 to roll toward the hook portion 8 and move (from the solid line position to the chain line position in Figure 3).
Therefore, the state of engagement between the pin 3 and the hook portion 8 at the end of closing the door b is maintained by the rolling weight 9.

The above-mentioned rolling weight 9 rolls to the end of the rocking plate 7 and returns after the door b is closed.

When opening the door b, the swing plate 7 is rotated in the upright direction so that the hook part 8 comes off from the pin 3 when pushed back strongly, so the hook part 8 comes off from the pin 3 automatically.

In addition, after the door b is closed, the slider 13 is lowered by operating the camera 12 from inside the room, and from the outside by using the key inserted into the cylinder 11', and the protrusion 22 of the stopper 10 collides with the pin 21 of the slider 13 (the second (as shown in Figure 3),
A locked state can be maintained.

〔effect〕

As described above, according to the door lock according to this invention, when the door is closed, the hook part of the rocking plate of the door frame side metal fitting engages with the pin of the door frame side metal fitting, thereby eliminating the half-open state of the door. At the same time, after the door is closed, the slider is lowered and the stopper device prevents the rocking plate from rotating in the upright direction, so that the door can be locked.

This eliminates the need for two locks.

In addition, since a rolling weight is provided on the upper edge of the rocking plate, the rolling weight can prevent problems such as the hook part lifting up and coming off the pin due to a collision when the door is closed. .

[Brief explanation of drawings]

Figure 1 is a partially cutaway front view of the door lock according to this invention, Figure 2 is a vertical side view of the same as above, Figure 3 is a vertical front view when the lock is locked, and Figure 4 is a vertical cross-section with the stopper device raised. It is a front view. A...Door frame side metal fitting, B...Door side metal fitting, 1...Mounting seat plate, 2...Protrusion piece, 3...Pin, 4...Opening, 5...Box, 6...Shaft, 7... ...swing plate,
8... Hook portion, 9... Weight, 10... Stopper, 11'... Cylinder lock, 12... Photograph, 13
...Slider, 14 ... Long hole, 15 ... Rotating body,
16...Pinion, 17...Notch, 18...Protrusion, 19...Rack, 20...Stopper device, 2
1...Pin, 22...Protrusion.

Claims (1)

[Scope of utility model registration request] A mounting seat plate, a protruding piece protruding from the surface of the mounting seat plate, a door frame side metal fitting consisting of a horizontal pin whose end is supported by the protruding piece, and a mounting box having an opening into which the protruding piece is fitted. , is assembled into this box, and when the door is closed, a rocking plate whose end located on the back side of the box is rotatably attached to a horizontal shaft engages with a pin on the metal fitting on the door frame side, and when the door is closed, A hook part provided at the tip of the rocking plate so that it comes off from the pin when the door is opened, a rolling weight that is moved from the upper end of the rocking plate to the tip by the collision force that occurs when the door is closed, and a hook part. a stopper provided so that the tip of the swing plate stops at a position lower than the pin; and an arcuate edge provided on the tip edge of the swing plate so that the swing plate rotates in the upright direction upon contact with the pin. In the lock, a cylinder lock that is operated from outside is installed in the mounting box, and a slider that is moved up and down by a cylinder lock that is operated from inside the room is installed. A door lock characterized by being equipped with a stopper device that prevents movement.