JPS5834634B2 - Door lock receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a receiver for a door lock, in which an engaging member for a door latch can be fixed in a predetermined position, and can be fixed by remote control. It is configured to be movable from the predetermined position, so that when the door lock is in the locked state, by pulling the door from the outside, the engaging member can be displaced to open the door.

An embodiment of the present invention will be described below with reference to the drawings.
In FIG. 1, A is a door, B is a fixed part of the building as seen from the outside, and C is a receiver.

In the receiver C, 1 is a frame body in which an opening 1a is formed, and an engaging member 2 is provided facing the opening 1a.

Two support plates 3.3 are installed horizontally in the frame 1, sandwiching the opening 1a, and the engagement member 2 projects upward and downward from a shaft 4 fixed between the support plates 3, 3. It is rotatably supported by the portion 2a.

The engaging member 2 is always urged toward the front surface of the frame body 1 by one end of a coil spring 5 replaced with the shaft 4.

The rotating end portion of the engagement member 2, that is, the portion facing outdoors, is formed as an arcuate guide portion 2b, and an engagement recess 2c is formed inside the arcuate guide portion 2b.

The latch 6 of the lock of the door A engages in the engagement recess 2c.

Reference numeral 7 denotes a rotation prevention rod for the engaging member 2, which is rotatably supported at its base end on a shaft 8 fixed to the frame 1, and is always kept upward by one end of a coil spring 9 replaced with the shaft 8. The blocking portion 7a at the free end is positioned at the rear of the engaging member 2 to prevent its rotation, and the blocking portion 7a is moved from the movement trajectory of the engaging member 2 to prevent its rotation. Allow movement.

10 is a solenoid, and its plunger 10 is located below.
a protrudes, and the plunger 10a has a flange 1
A coil spring 11 provided between the upper surface of 0b and the solenoid 10 normally urges the lower end of the coil spring 11 downward so that it is located behind the engagement member 2, and at this time, the flange 10b is pressed against the rotation prevention rod 7. and press down.

When the solenoid 10 is energized, the plunger 10a is attracted upward against the coil spring 11, and the rotation prevention rod 7 is accordingly rotated upward by the coil spring 9.

12 is a rotation permissible state holding plate for the engagement member 2;
The base end of the coil spring 13 is rotatably supported on the shaft 4, and is always urged in the direction of the engagement member 2 by one end of the coil spring 13 replaced with the shaft 4, and is formed on the upper part of the free end thereof. The receiving plate portion 12a is in contact with the side surface of the plunger 10a, and when the plunger 10a is attracted upward when the solenoid 100 is energized, the receiving plate portion 12a is moved by the coil spring 13 so that the plunger 10
A rotates downward, and then the power is cut off and Pushinger 1
Even when 0a is about to descend, the receiving plate portion 12a
holds it in the raised position.

16 is a switch for a display circuit, etc., and 11 is an opening/closing lever for the switch 16.

In the above configuration, the receiver C is in the state shown in FIGS. 2 to 5, and the latch 6 of the lock of the locked door A is inserted into the engagement recess 2c of the engagement member 2.

A blocking portion 7a of a rotation blocking rod 7 is provided on the back side of the engaging member 2.
is located and cannot be rotated.

Therefore, in order to open the door A from the outside, the door A cannot be opened unless the lock is operated with a key and the latch 6, which is always urged in the protruding state by the coil spring, is pulled in.

When a visitor is confirmed through an interphone or the like, the solenoid 10 is energized by remote control.

When the solenoid is energized, the plunger 10a is attracted upward, and as a result, the receiving plate portion 12a of the rotation permissible state holding plate 12 that is in contact with the side of the plunger 10a is
is advanced below the plunger 10a by the coil spring 13, and maintains this state even after the current supply is cut off.

As the pusher 10a rises, the rotation preventing rod 7, which is released from its restraint, is rotated upward by the coil spring 9 and releases the restraint of the engagement member 2.

Therefore, when the door A is pulled in this state, the latch 6 disengages the engagement recess 2c while rotating the engagement member 2, so that the door can be opened while the door is in the locked state.

When the engaging member 2 rotates, the rotation permissible state holding plate 12 is rotated, so that the plunger 10a loses support by the receiving plate portion 12a, and the engaging member 2 is located at a lower position than the receiving plate portion 12a. When the latch 6 is released, the engaging member 2 is immediately returned to its original position by the coil spring 5.

At the time of return, the lower end of Pushinger 10a is connected to engagement member 2.
When the retainer plate 120 is removed, the retaining plate 120 in the permissible rotation state is prevented from rotating via the receiving plate portion 12a located at a higher position than the upper surface of the retaining member 2, and falls between the engaging member 2 and the retainer plate 12. Therefore, the blocking portion 7a of the rotation blocking rod 7 is located on the back side of the engaging member 2, and as described at the beginning, the engaging member 2 is fixed in a predetermined position.

The latch in the locked state is capable of retreating inwardly against the spring that maintains the protruding state due to external pressure, and when the door is opened in the locked state by remote control, the latch 6 is engaged by closing the door. The member 2 enters the engagement recess 2c while being moved backward by the arcuate guide portion 2b, and is in the locked open state again.

After activating the solenoid 10 to release the restraint on the engagement member 20 and opening the door while rotating the false engagement member 2, the engagement member 2 immediately returns to its original position and rotates as described above. The position is fixed by the blocking rod 7.

However, if the solenoid is accidentally activated again by remote control before the door is closed in this state, the engagement member 2 becomes rotatable, but when closing the door A, the latch 6 Since the engagement member enters the engagement recess 2c while being rotated, this state is automatically resolved and the engagement member is fixed.

However, if the coil spring that biases the latch 6 is weaker than the coil spring 5 that biases the engagement member 2, the engagement member 2
The latch 6 moves backward and engages the engagement recess 2cK without any rotation of the latch 6. In this case, the door A can be pulled and opened from the outside again.

In order to eliminate this movement, a sensing plate portion 12b is provided at the free end of the rotation permissible state holding plate 12 and extends downward, and the door A is provided with a contact protrusion 14 for the sensing plate portion 12b. It protrudes while being biased outward by a coil spring.

Therefore, when door A is closed in this state, contact protrusion 1
4 collides with the sensing plate portion 12b and rotates the rotation permissible state holding plate 12 in the direction of separating from the plunger 10a as shown by the imaginary line in FIG. 6, so that the accidental rotation permissible state is automatically prevented. As a result, the engagement member 2 is securely fixed.

Since the present invention is constructed as described above, the engaging member for the latch can be displaced by activating the solenoid by remote control, so that the door can be opened from the outside while the door lock is in the locked state, and the door can be closed from this state. In such a case, the engagement member has the feature of being able to reliably prevent the displacement of the engagement member.

[Brief explanation of drawings]

Figure 1 is a front view of the door lock receiver according to the present invention in use, Figure 2 is a diagram of the internal mechanism seen from the right side of the same as above, Figure 3 is an exploded perspective view of the main mechanism, and Figure 4. is I in Figure 1
FIG. 5 is a sectional view taken along the line V-VI, FIG. 5 is a mechanical diagram of a main part seen from the left side of FIG. 2, and FIG. 6 is a sectional view similar to FIG. 4 showing the operation of the holding plate. 2...Engagement member, 10sonoid, 10a...
... Plunger, 12 ... Rotation permissible state holding plate, 14 ... Contact protrusion.

Claims (1)

[Claims] 1. An engagement member having a guide part and an engagement recess for a latch of a door lock is rotatably supported, and the engagement member is normally fixed at a position in the locus of movement of the engagement member, and the engagement member is normally fixed. A plunger is provided which allows the plunger to move out of the locus of movement when energized, and a retaining plate is pivotally supported on the back surface of the engagement member so as to be rotatable in a direction intersecting the direction of movement of the plunger, and a coil spring is provided. The holding plate is provided with a sensing plate portion for the contact element of the door, and the holding plate is provided with a sensing plate portion for the contact element of the door. A receiver for a door lock, characterized in that, during a closing operation, the contact member displaces the holding plate via the sensing plate portion to a position where the plunger is not supported.