JPH01111972A - Locking device for door - Google Patents

Abstract

PURPOSE: To reduce costs by unlocking a door through the sinking of a lock plate into a recessed stepped part provided in the stile of a door frame, and locking the door through the projecting of the lock plate from the stepped part. CONSTITUTION: When a card is inserted into a card reader to read cipher codes, data are temporarily stored in a register. Next, data stored in a memory are compared with the data stored in the register, and if both are coincident, a motor 9 is driven for forward rotation and a sector gear 10 is turned counterclockwise. Then a lock plate 6 is turned and sinks into a recessed stepped part 5 in the stile 3 of a door frame 2 to open a door 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a locking device for a revolving door.

[Conventional technology]

Conventional revolving door locking devices are installed by fitting a lock case into the door from the vertical stile of the door, and inserting a key into the cylinder lock from outside! 7) The deadbolt is moved in and out by operation, and when the deadbolt is retracted, the latch bolt is retracted by operating a lever or a grip ball from outside or indoors.

[Problem that the invention seeks to solve]

The movement of the cylinder lock, dead bolt, lever, grip ball, and latch bolt results in a complicated configuration, which poses a problem of increasing costs.

There was also the problem that the lock was easily unlocked due to damage to the lever or ball.

There was also the problem that clothes could get caught, especially in narrow corridors where the levers and grips were protruding.

[Means for Solving the Problems] 1 In order to solve the above problems, the present invention provides a recessed stepped portion provided on the vertical stile door stop protruding surface of a door frame having a door that opens and closes in a rotating manner; In addition to fitting into this recessed step, a lock plate whose end located in the opposite direction of the door stop is rotatably attached is inserted into the recessed step to avoid collision between the door and the tip of the lock plate. and a drive device for the lock plate, which is provided so as to protrude from the recessed step part and bring the tip of the lock plate into contact with the door surface, and an unlock code that is set in a memory only when the lock is operated. The electronic lock device is provided so that when a match is made, the unlocking circuit activates the drive VT position to rotate the lock plate in the retracting direction.

[Effect]

Normally, when the door is closed, the lock plate is rotated so as to protrude from the recessed step, so that the tip of the lock plate contacts the door surface, resulting in a locked state.

When the unlocking circuit of the electronic lock device is actuated by the card, the drive device is operated and the lock plate is rotated so as to be recessed into the recessed step, thereby avoiding a collision between the tip of the lock plate and the door.
It will be unlocked.

〔Example〕

As shown in the figure, a recessed step portion 5 is provided on the protruding surface of the door stop 4 of the vertical stile 3 of the door frame 2 having the door 1 that opens and closes in a rotational manner.

Reference numeral 6 denotes a lock plate which is fitted into the recessed stepped portion 5 and whose end opposite to the door stop 4 is rotatably attached via a vertical support shaft 7.

8 is inserted into the recessed step 5 to avoid collision between the door 1 and the tip of the lock plate 6, and is made to protrude from the recessed step 5 to bring the tip of the lock plate 6 into contact with the door 1 surface. This is a drive device for the provided lock plate 6.

In the illustrated case, the above drive device 8 includes a reversible motor 9, a sector gear 10 fixed to the output shaft of this motor 9, and a lock plate 6.
Although the gear 11 is fixed to the support shaft 7 that rotates together with the lock plate 6 and meshes with the sector gear 10, other methods may be used to rotate the lock plate 6 in the projecting and retracting directions.

Reference numeral 12 denotes an electronic locking device which operates a driving device 8 by an unlocking circuit to rotate the lock plate 6 in the retracting direction only when the code matches the unlocking code set in the memory during an unlocking operation.

As shown in FIG. 4, the electronic lock device 12 described above includes a card reader 13 (a code numeric keypad may be used instead of the card reader), a register 14, a comparator 15, and a memory 16.
, a code setting device 17, and a drive circuit 18 for the motor 9.When a magnetic card, c card, etc., on which an encryption code is written into the card reader 13 is inserted and the encryption code is read, the data is temporarily stored in the register. 14. The comparator 15 compares the cryptographic code data set in advance by the code setter 17 and stored in the memory 16 with the data in the register 14, and if the two match,
A command for normal rotation of the motor 9 is issued to the motor drive circuit 18, and the sector gear 10 is rotated counterclockwise in FIG. 3 by driving the motor 9 in the normal rotation.

As a result, the lock plate 6 is rotated and the lock plate 6 is inserted into the recessed stepped portion 5.
Since the front end of the lock plate 6 is retracted and collision between the tip of the lock plate 6 and the surface of the door 1 is avoided, the door 1 can be opened.

In addition, when door 1 is closed, the limit switch (
After confirming that the door 1 (not shown) is closed, the motor 9 is driven in reverse to rotate the lock plate 6 (to the chain line position in FIG. 3) so as to project it from the recessed step 5, thereby locking the door.

Further, when the push button switch 19 is pressed to unlock the lock from inside the room, the motor 9 is driven in the forward rotation direction and the lock plate 6 is rotated so as to be recessed into the recessed stepped portion 5.

Note that the push button switch 1S is not required for doors such as lockers.

Further, the lock plate 6 may be in contact with the entire length of the back surface of the door 1 in the vertical direction.

〔effect〕

As described above, according to the door locking device of the present invention, the vertical stile of the door frame is provided with a recessed step, and the lock plate is recessed into the recessed step so that the tip of the lock plate and the door The door is unlocked by avoiding collision with the surface, and the lock plate is protruded from the recessed step and the lock is locked by the contact between the tip of the lock plate and the door surface, so the door plate is thin and the lock case This eliminates the problem of having to fix the lock case to the back of the door because it cannot be fitted from the door stile.

In addition, since the door is opened by inserting the lock plate into the recessed part of the door stile, there is no risk of clothes getting caught on the head of the latch bolt protruding from the door stile, or furniture being brought in or taken out touching it. You can eliminate problems that can cause injury.

[Brief explanation of the drawing]

Are the drawings related to this invention? Fig. 1 is a front view, Fig. 2 is a partially cutaway perspective view showing the main parts of the same, Fig. 3 is a cross-sectional enlarged plan view of the same, and Fig. 4 is a diagram showing the operation. This is a flowchart. 1...Door, 2...Door frame, 3...
... Vertical stile, 4 ... Door stop, 5 ... Recessed step, 6 ... Lock plate, 7 ... Support shaft, 8 ...
...Drive device, 9...Motor, 10...
...Sector gear, 11...Gear, 12...
...Electronic locking device. Patent applicant Shun Yamashita Otoma Agent Kama 1) Bun 2

Claims (1)

[Claims] A recessed step provided on the protruding surface of the vertical stile door stop of a door frame having a door that opens and closes by rotation, and a recessed step that is fitted into the recessed step and the end located in the opposite direction of the door stop can be freely rotated. The lock plate installed in the recess is recessed into the recessed step to avoid collision between the door and the tip of the lock plate, and the lock plate is protruded from the recessed step to bring the tip of the lock plate into contact with the door surface. The driving device for the lock board is arranged such that only during an unlocking operation, when the code matches the unlocking code set in the memory, the driving device is actuated by the unlocking circuit to rotate the lock board in the retracting direction. A door locking device consisting of an electronic locking device.