JPS6240038Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electric lock used for a sliding door to lock and unlock the door.

Conventionally, this type of electric lock was developed in 1986.
There is one shown in Publication No. 109797. As shown in FIG. 1, a lever 2 has one end supported pivotally on a frame 1, and a locking pawl 3 is pivotably supported on the other end.
A locking hole 4 is provided in this locking pawl 3, and a pin 5 passing through this locking hole 4 is provided in the lever 2, and the inner diameter of this locking hole 4 is made larger than the diameter of the pin 5, and the upper part of the door 6 is The locking pawl 3 is swingable only within a range where the lock catch 7 can come into contact with and pass through. Further, the frame 1 is provided with a stopper 8 for preventing the lever 2 from rotating rightward in the figure and falling, and a solenoid 9 is also provided, and a movable piece 9a of the solenoid 9 has a locking arm 10 that rotates. Pivotally supported for free movement,
A roller 11 contacts the lever 2 at the tip of the locking arm 10 and prevents it from rotating to the left in the figure.
is rotatably provided. When the door 6 is unlocked, the solenoid 9 is energized to move the movable piece 9a and the locking arm 10 to the right in the figure to release the locking state of the lever 2 by the roller 11, and when the door is locked,
The solenoid 9 is demagnetized, the movable piece 9a and the locking arm 10 are moved to the left in the figure, and the lever 2 is prevented from rotating by the roller 11.

However, with this conventional electric lock,
Since the solenoid is energized and unlocked when the door is opened, if the solenoid is not energized for some reason (power outage, disconnection, etc.), the door may be opened despite the unlock command. The problem is that it is not possible.

The present invention was made in view of the above problems, and it is an object of the present invention to manually operate an electric lock even if the solenoid is not energized for some reason.

In order to achieve the above object, the present invention provides a slide plate movable in the door opening/closing direction at the top of the frame, a long hole is bored in this slide plate, and an operating rod that passes through this long hole is locked. The other end of a return spring that is attached to the claw and whose one end is supported by the frame is supported on a slide plate, and a connecting member such as a wire fixed to the slide plate is connected to an unlocking means, and the unlocking means pulls the connecting member. The long hole in the slide plate locks the operating rod and swings the locking pawl to unlock the door.

The present invention will be explained below based on the embodiment shown in the drawings. Since the electric lock has the same structure as the conventional technology, the same reference numerals will be given and the explanation will be omitted. The second manual unlocking device
This will be explained based on Figures a and b.

The manual unlocking device 26 includes a slide plate 13 provided on the top of the frame 1, slotted holes 14 and 15 formed in the slide board 13 and the frame 1, respectively, and an operating rod 16 passing through these slots 14 and 15 engaged. Attach to stopper 3. Further, guide grooves 17 and 18 are formed in the slide plate 13, and the guide grooves 17 and 18 are formed in the slide plate 13.
Guide pins 19 and 20 passing through frame 1
The slide plate 13 is supported and guided by the guide grooves 17, 18 and the guide pins 19, 20, and is movable in the door opening/closing direction. The slide plate 13 supports the other end of the return spring 21 whose one end is supported by the guide pin 20, and also has a U-shaped locking portion 13a provided at the right end of the slide plate 13.
A fixture 22 for fixing a connecting member 23 such as a wire to
This connecting member 23 passes through a flexible protective tube 25 fixed to an L-shaped bracket 24 attached to the frame 1, and as shown in FIG. Connected to box 27.

This operation box 27 is provided with an unlocking means A as shown in FIGS. 4a and 4b. This consists of a rod 31 to which a connecting member 23 such as a wire is fixed at one end and an unlocking lever 30 at the other end, and a ball 32 pressed by a spring 33 into recesses 31a and 31b formed in the rod 31. When the locking mechanism 34 is configured to hold the rod 31 together, and when the unlocking lever 30 is operated to move the rod 31 in the vertical direction, the ball 32 pressed by the spring 33 moves into the recess 31a or 31b. The rod 31 is engaged to hold the connecting member 23, such as a wire, in the tensioned or relaxed position.

The operation of the present invention having the above-mentioned configuration will be explained.

First, when the solenoid 9 is demagnetized, the roller 11 locks the lever 2, so
The lock catch 7 on the top of the door 6 comes into contact with the locking pawl 3 and the lever 2
Even if an attempt is made to rotate it, it does not rotate, and the door 6 is locked and in the closed state shown in FIG. 3.

Now, when a door unlocking signal is sent to the solenoid 9 from the control panel (not shown), the solenoid 9 is energized and moves the movable piece 9a and the locking arm 10 to the right in the figure, and the lever 11 is activated by the roller 11. Release the locked state of 2. Therefore, when the door 6 is moved from the fully closed position in the direction of arrow a (opening direction) in FIG. It rotates in the middle left direction, and the locking state between the lock catch 7 and the locking pawl 3 on the upper part of the door 6 is released, and the door 6 is fully opened. At this time, the operation rod 16 does not lock the elongated hole 14 and move the slide plate 13 to the left in the figure, and does not affect the unlocking means A in the operation box 27. Then lever 2
The locking pawl 3 falls due to its own weight, the solenoid 9 is demagnetized, the movable piece 9a and the locking arm 10 are projected, and the roller 11 locks the lever 2. Therefore, when the fully open door 6 is moved from the fully open position in the direction of arrow b (closed direction) in FIG. The locking pawl 3 returns to its original position and the door 6 is locked.

Next, if the solenoid 9 is not energized even when the door unlock signal is transmitted, operate the unlock lever 30 in the operation box 27 shown in FIGS. 4a and 4b, and move the rod 31 downward. Move the connecting member 23 such as a wire passing through the protective tube 25 and pull the spring 33.
The ball 32, which is pressed by the recess 31a, is engaged with the recess 31a to hold the rod 31 in that position. Then, the fixture 22 that is locked to the locking part 13a of the slide plate 13 is pulled by the connecting member 23 such as a wire, and the slide plate 13 moves to the right in the figure against the spring 21. The long hole 14 of the slide plate 13 locks the operating rod 16 provided on the locking claw 3, and the locking claw 3
oscillate to the position indicated by the chain line in the figure. Therefore, even if the roller 11 locks the lever 2, the lock catch 7 on the top of the door 6 is no longer locked with the locking pawl 3, and the door 6 can be fully opened. Thereafter, the unlock lever 30 in the operation box 27 is operated to move the rod 31 upward, and the ball 32 pressed by the spring 33 is engaged with the recess 31b and held in that position. Then, the connecting member 23 such as a wire is loosened, and the slide plate 13 is moved to the left in the figure by the force of the spring 21, and the elongated hole 14 of the slide plate 13 is moved away from the operating rod 16 and returned to its original position. Return. Therefore, the locking pawl 3 falls under its own weight, and when the door 6 is fully closed in the same manner as described above, the lock catch 7 on the upper part of the door 6 and the locking insert 3 come into contact with each other, thereby locking the door 6.

Note that the unlocking means A in the operation box 27 described above is not limited to the embodiment shown in FIGS. 4a and 4b. For example, as shown in FIGS. When the connecting member 23 such as a wire is fixed to the rotating shaft 36 of the rotating shaft 36, the flat plate 37 and the operation box 27
When the unlocking handle 35 is rotated to the chain line position in the figure, the connecting member 23 such as a wire is When the flat plate 37 comes into contact with the locking fitting 38 as shown in FIG. 5c, the unlocking handle 3 is released.
5 may be held in that position.

Further, the unlocking means A is provided in an operation box 27 provided on a wall, etc., but as shown in FIGS. 6 and 7 a, b, and c, a wire extending from the manual unlocking device 26 The tube 2 protects the connecting member 23 such as
5. Connect to the unlocking lever 40 via the guide 39 provided in the blind 28, and attach the unlocking ball 41 to the connecting member 23.
At the same time, a hole 42 consisting of a large diameter part 42a larger than the diameter of the release ball 41 and a small diameter part 42b smaller than the diameter of the release ball 41 is bored in the guide tool 39, and the unlocking lever 40 is pulled downward. Pull the connecting member 23 such as a wire, and release the unlocking ball 41 into the hole 4 of the guide tool 39.
The unlocking ball 41 may be configured to be locked to the guide tool 39 by the small diameter part 42b of the hole 42 after passing through the second large diameter part 42a.

As is clear from the above, according to the present invention, if the solenoid is not energized when opening the door, or the door cannot be opened due to sticking rollers, etc., the electric lock can be operated manually to open the door. I can do it. Additionally, a long hole is drilled in the slide plate provided at the top of the frame, an operating rod that passes through this long hole is attached to the locking pawl, and a connecting member such as a wire fixed to the slide plate is pulled by the unlocking means. Since the elongated hole in the slide plate locks the operating rod and swings the locking pawl, normal electric locks operate independently of the slide plate, and the manual unlocking device's spring and This has the advantage that sagging of connecting members such as wires does not occur.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a conventional electric lock, Figures 2a and b are front and plan views of a conventional electric lock with the manual unlocking device of the present invention added, and Figure 3 is a booklet attached to a sliding door. A schematic diagram of an electric lock equipped with the manual unlocking device of the invention, FIGS. 4a and 4b are sectional views showing an embodiment of the unlocking means A, and FIGS. 5a and b are other implementations of the unlocking means A. FIG. 5c is a sectional view showing an example, and FIG. 5c is a sectional view taken along the line A in FIG. 5b, and FIGS. be. 1...Frame, 3...Latching claw, 6...Door, 7
... Lock receiver, 12 ... Electric lock, 13 ... Slide plate, 14 ... Long hole, 16 ... Operation rod, 21 ... Return spring, 23 ... Connection member, 26 ... Manual unlocking device, A ...Unlocking means.

Claims (1)

[Claims for Utility Model Registration] (1) One side of the lever is rotatably supported on the frame, and the other side of the lever is rotatably supported with a locking pawl for locking and unlocking the door. In an electric lock in which a stopper is provided to prevent the locking pawl from falling, and a solenoid is provided in the frame to protrude and insert a roller that comes into contact with the lever and prevents upward rotation, the lock is provided with a solenoid on the frame in the door opening/closing direction. A movable slide plate is provided in the slide plate, an elongated hole is bored in the slide plate, an operating rod passing through the elongated hole is attached to the locking pawl, and the other end of the return spring whose one end is supported on the frame is attached to the slide plate. A connecting member such as a wire provided on the slide plate is connected to the unlocking means so that the elongated hole of the slide plate locks the operation rod and swings the locking pawl to the position where the door is unlocked. A manual unlocking device for an electric lock. (2) The unlocking means includes a rod connected to a connecting member such as a wire on one side and provided with an unlocking lever on the other side;
A registered utility model characterized by a locking mechanism that engages a ball pressed by a spring in a recess formed in the rod when the rod is moved vertically by operating the unlocking lever. A manual unlocking device for an electric lock according to claim 1. (3) The unlocking means includes a flat plate provided on the rotating shaft of the unlocking handle and connecting a connecting member such as a wire;
Request for registration of a utility model characterized by a locking metal fitting having an inclined surface that is provided at a position where it comes into contact with a flat plate when the unlocking handle is rotated to the unlocked position and locks the flat plate by frictional force. A manual unlocking device for an electric lock according to item 1. (4) The unlocking means includes an unlocking lever connected to a connecting member such as a wire hanging down through a guide, an unlocking ball provided in the middle of the connecting member, and an unlocking ball bored in the guide. The manual unlocking device for an electric lock according to claim 1, which is a utility model, and comprises a hole formed by a large diameter part larger than the diameter of the ball and a small diameter part smaller than the diameter of the ball.