JPS6335793B2 - - 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. The engaging member is configured to be movable from the predetermined position, and the engaging member can be opened by pulling the door from the outside when the door lock is in the locked state, and the engaging member can be opened by remote control. It is designed to be able to change from a displaceable state to a fixed state.

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 a building as seen from the outside, and C is a receiver.

In the money receiver C, 1 is a frame and has 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 between them, and the engaging member 2 projects above and below a shaft 4 fixed between the support plates 3, 3. Part 2
It is rotatably supported with a. The engaging member 2 is always urged toward the front surface of the frame body 1 by one end of a coil spring 5 wound around the shaft 4. The rotating end portion of the engagement member 2, that is, the portion facing the outdoors, is formed as an arcuate guide portion 2b, and an engagement recess 2 is formed inside the arcuate guide portion 2b.
c is formed. 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 engagement member 2, which is rotatably supported by a shaft 8 whose base end is fixed to the frame body 1, and one end of a coil spring 9 wound around the shaft 8. The blocking portion 7a at its 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 allow its rotation.

10 is a solenoid, and its plunger 10a projects downward;
a is normally urged downward by a coil spring 11 provided between the upper surface of the flange 10b and the solenoid 10 so that its lower end is located behind the engagement member 2, and at this time the flange 10b is rotated. It comes into contact with the blocking rod 7 and pushes it downward. 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.

Reference numeral 12 denotes a rotationally permissible state holding plate for the engagement member 2, which is rotatably supported at its base end with respect to the shaft 4, and at the same time is always held by one end of a coil spring 13 wound around the shaft 4. A receiving plate portion 12a formed on the upper part of the free end of the engaging member 2 is biased in the direction of the engaging member 2, and is in contact with the side surface of the plunger 10a, so that the plunger 10a is attracted upward when the solenoid 10 is energized. In this case, the receiving plate portion 12a is rotated below the plunger 10a by the coil spring 13, and even when the plunger 10a attempts to descend after the current is cut off, the receiving plate portion 12a maintains it in the raised position. .

A through hole 2d is formed in the arcuate guide portion 2b of the engagement member 2 in the front and back directions, and a latch sensing finger 14 is supported in the through hole 2d so as to rotate slightly on a shaft 15. The sensing portion 14a of the latch sensing finger 14 moves in and out of the arcuate guide portion 2b as it rotates, and the driven portion 14b includes the driving plate portion 12b at the side end of the rotation permissible state holding plate 12.
When the door is locked, the drive plate portion 12b engages and separates from the plunger 1.
0a, the driven portion 14b is held at a separate position where it is not restrained.

16 is a switch for a display circuit, etc., and 17 is an opening/closing lever for the switch 16.

A rotation permissible state holding plate 12 is provided at the bottom of the engagement member 2.
A driving solenoid 18 is provided for the driving solenoid 18, and its plunger 18a projects upwardly.
is urged upward by. The flange portion 18b has a drive piece 18c for the engaging bent portion 12c at the lower part of the rotation permissible state holding plate 12. 20
21 is a switch for the display circuit, etc., and 21 is an opening/closing plate for the switch 20.

In the above configuration, the money receiver C is in the state shown in FIGS. 2 to 5, and the latch 6 in the lock of the door A is in the locked state in the engagement recess 2c of the engagement member 2.
is accepted. A blocking portion 7a of a rotation preventing rod 7 is located on the back surface of the engaging member 2, so that the engagement member 2 cannot be rotated. Therefore, to open door A from the outside,
This can only be done by operating the lock with a key and retracting the latch 6.

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 along with this, the plunger 10a
Rotation permissible state holding plate 12 that was in contact with the side of a
The receiving plate portion 12a of the plunger 10a is moved downwardly by the coil spring 13 and remains in this state even after the power supply is cut off. plunger 1
Due to the rise of 0a, the rotation preventing rod 7, which has released 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 separates from the engagement recess 2c while rotating the engagement member 2, so that the door can be opened while the door remains locked.

Before opening the door A, in order to release the restraint release state of the engagement member 2 formed by operating the solenoid 10, the drive solenoid 18 is energized by remote control and its drive piece 18c moves the engagement bent portion. The rotation permissible state holding plate 12 is slightly rotated via the rotation permissible state holding plate 12c, whereby the lower end of the plunger 10a whose support is cut off falls between the engagement member 2 and the rotation permissible state holding plate 12, and At the same time, the blocking portion 7a of the rotation blocking rod 7 is located on the back surface of the engaging member 2 to prevent its rotation.

When the engaging member 2 rotates, it rotates the rotation permissible state holding plate 12, so that the plunger 10a loses support by the receiving plate portion 12a and the receiving plate portion 1
The engagement member 2 is now supported by the upper surface of the engagement member 2 located lower than 2a, and when the latch 6 is released, the engagement member 2 is immediately returned to its original position by the coil spring 5. At the time of return, the lower end of the plunger 10a prevents rotation of the rotation permissible state holding plate 12 through the receiving plate portion 12a located at a higher position than the upper surface of the engagement member 2 when the plunger 10a disengages the engagement member 2. Engagement member 2
Therefore, the blocking portion 7a of the rotation preventing rod 7 is located on the back side of the engaging member 2, and the engaging member 2 is held at a predetermined position as described at the beginning. This leads to fixation.

The latch 6 in the locked state can be retracted inward by external pressure against a spring (not shown) that maintains the latch in its protruding state. When the latch 6 is closed, the latch 6 is once retracted by the arcuate guide portion 2b of the engagement member 2 and enters the engagement recess 2c, thereby returning to the locked closed state.

After activating the solenoid 10 to release the restraint of the engaging member 2 and opening the door A while rotating the engaging member 2, the engaging member 2 immediately returns to its original position as described above. The position is fixed by the rotation prevention rod 7.

However, if the solenoid 10 is accidentally activated again by remote control before the door A is closed in this state, the engagement member 2 becomes rotatable, and when the door A is closed, the latch 6 is moved from the engagement member. If the engagement member 2 enters the engagement recess 2c while rotating the engagement member 2, the state will be automatically canceled and the engagement member 2 will be fixed. In contrast, if the spring (not shown) biasing the latch 6 is weak, the latch 6 will move backward and engage the engagement recess 2c without any rotation of the engagement member 2. In this case, the door can be opened again from the outside by pulling the door A.

A latch sensing finger 14 is provided to eliminate such movement. That is, the relationship between the latch sensing finger 14 and the rotation permissible state holding plate 12 is as shown in FIG. 4 before the solenoid 10 is energized.
2 is prevented from rotating beyond a certain limit by the plunger 10a, so its driving plate portion 12b is separated from the driven portion 14b of the latch sensing finger 14, but when the solenoid 10 is energized, the plate 12 is The coil spring 13 advances from the imaginary line position in FIG. 6 to the solid line position, and the driving plate portion 12b contacts the driven portion 14b and rotates the finger 14, causing the sensing portion 14a to protrude from the arcuate guide portion 2b. let

Therefore, when the door A is closed in this state, the latch 6 abuts against the sensing portion 14a and rotates the latch sensing finger 14 as shown by the imaginary line in FIG.
The driven portion 14b of the latch sensing finger 14 rotates the rotation permissible state retaining plate 12 in a direction away from the plunger 10a against the relatively weak coil spring 13, thus causing an inadvertent rotation permissible state. is automatically canceled, and the engaging member 2 is securely fixed.

Note that the inward rotation of the door A (upward in FIG. 4) is prevented by an additional structure in the fixed part B of the building, as is well known.

Since the present invention is constructed as described above,
By activating a solenoid by remote control, the engaging member relative to the latch can be displaced, so that the door can be opened from the outside while the door lock is in the locked state, and when the door is closed from this state, displacement of the engaging member is reliably prevented. Furthermore, it has the feature that the engaging member can be changed from a displaceable state to a fixed state by remote control.

[Brief explanation of the drawing]

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. 5 is a sectional view taken along the line 1 in FIG. 1, FIG. 5 is a diagram of the main mechanism seen from the left side of FIG. 2, and FIG. 6 is a sectional view similar to FIG. 4 showing the operation of the latch sensing finger. 2...Engagement member, 10...Solenoid, 10a
... Plunger, 12 ... Rotation permissible state holding plate, 14 ... Latch sensing finger, 18 ... Solenoid.

Claims (1)

[Claims] 1 An engaging member having a guide portion and an engaging recess for a latch of a door lock is rotatably supported between a locked position and an unlocked position, and the plunger of a solenoid is moved by a locus of movement of the engaging member in the locked position. The engagement member is provided so as to be movable forward and backward relative to the plunger, and is biased by a spring when the solenoid is de-energized to position the engagement member in a locked position, and a rotation permissible state holding plate having a receiving plate portion relative to the plunger is attached to the engagement member. is rotatably supported by a coil spring in the direction of the engaging member so as to be able to come into contact with and separate from the engaging member on the back surface of the engaging member, and when the solenoid is energized in the locked position of the engaging member, the rotary member is rotated. The receiving plate portion of the permissible state holding plate enters the movement locus of the plunger to hold the plunger apart from the movement locus of the engagement member, and further engages with the rotation permissible state holding plate. A receiver for a door lock, characterized in that a solenoid is provided to release support for the plunger by rotating the rotation permissible state holding plate in a direction away from the engagement member.