JPH0612143Y2 - Electric lock locking / unlocking mechanism - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is applied to electric locks such as hotel locks that can be opened from the outside by being unlocked by an unlocking signal issued by matching the secret code. The present invention relates to a locking / unlocking mechanism of an electric lock that can be opened by rotating the handle in any direction.

[Conventional technology and problems]

Electric locks used for hotel locks and the like generally have a locking / unlocking mechanism that unlocks the latch bolt by an unlocking signal and rotates the handle on the outside to immerse the latch bolt in the door and open it. However, there were the following problems.

(a) When the handle is rotated to open the door after being unlocked,
Since the turning direction of the handle is limited to one direction, there was a problem that the door could not be opened when the handle was turned in the opposite direction due to carelessness or discomfort.

(b) An electric locking / unlocking mechanism is disclosed in, for example, Japanese Patent Publication No. 52-455.
It is generally complex, as seen in the technique described in the '59 publication.

In order to make the locking / unlocking mechanism as compact and compact as possible, to operate smoothly and reliably, and to have durability and high reliability, it is desirable that the mechanism is not as complicated as possible.

The present invention has been made to solve such a problem.

[Means for solving problems]

The present invention includes a case provided inside an end portion of a door on the door frame side,
The lever drive cam is rotatably fitted in the case and rotated by an outdoor handle or the like to form two lever drive cams and one plate drive cam on the outer peripheral surface, and an engaging groove is formed at the tip of the plate drive cam. An outdoor hub provided, an indoor hub that is rotatably fitted in the case and is rotated by an indoor knob or the like to form two lever drive cams on the outer peripheral surface, and a solenoid fixed in the case The locking plate whose end slides in the case and engages and disengages with the engaging groove of the plate driving cam, and one end engages with the locking plate and the other end drives the plate. A return plate in close proximity between the cam and the lever drive cam,
One end is pivotally attached to the case, the other end is engaged with a latch bolt, and a protrusion protruding in the middle is provided in a direction protruding between the two lever drive cams of the indoor hub and the outdoor hub. The structure has a hub lever that is biased.

[Action]

With the above configuration, the solenoid is operated in response to the unlock signal, the locking plate moves in the direction opposite to the outdoor hub and the indoor hub, and the locking plate is provided on the plate drive cam of the outdoor hub. Separate from the groove.

Next, when the outdoor hub is rotated in any direction, the return plate is rotated by being pushed by the lever drive cam or the plate drive cam, and one end of the return plate is engaged with the locking plate. Moves to contact the lever drive cam.

On the other hand, the hub lever pressed by one of the two lever drive cams of the outdoor hub is rotated by the rotation of the outdoor hub, the latch bolt is retracted into the case, and the door can be opened.

When the outdoor hub is released after opening the door, the hub lever is urged in the direction to press the outdoor hub, so that the lever pressed by the hub lever rotates so that the hub lever contacts between the two lever drive cams. It moves to return to the old posture, and the locking plate fits into the engagement groove of the plate drive cam, so that it returns to the locked state at the same time as the door is closed.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a front view in which the case cover 1 of the electric lock A is partially broken, and the case 2 embedded in the end portion of the door and the hole formed through the case cover 1 to the outdoor side hub 3 and The indoor hub 4 is rotatably fitted (for the outdoor hub 3, see FIG. 2).

The outdoor hub 3 is attached to the indoor hub 4 by the outdoor handle.
2 are individually rotated by the indoor side knob and the like, but as shown in FIG. 2, two lever drive cams 6 and 7 both projecting from the outer circumference circle 5 are provided, and two lever drive cams are provided. A recess 8 is formed between 6 and 7.

Further, only the outdoor hub 3 is provided with a plate drive cam 9 substantially on the opposite side of the recess 8, and an engaging groove 10 is formed in the plate drive cam at substantially the center thereof.

A solenoid 11 is fixed to the inner wall of the case 2, and when the solenoid 11 is energized, the plunger 12 is pushed outward.

A guide plate 13 is attached to the tip of the plunger 12, and both ends of a spring 14 wound around the plunger 12 are attached to the solenoid 11 and the guide plate 13 (see FIG. 2).

One end of the guide plate 13 is fitted in a long groove 16 provided in a locking plate 15 slidably fitted in the case 2.

Therefore, when the solenoid 11 is energized, the plunger 1
2 projects, and the locking plate 15 moves in the same direction via the guide plate 13.

The locking plate 15 is provided with a long hole 17 on the opposite side of the long groove 16 in the moving direction of the locking plate 15.

On the other hand, the pin 18 is provided on the inner wall surface of the case 2,
8 has a hole 20 provided in the middle of the return plate 19.
Is loosely fitted.

Then, the projection 21 provided at one end of the return plate 19 is inserted into the elongated hole 17, and the other plate-shaped portion 22 extends between the plate drive cam 9 and the lever drive cams 6, 7.

The hub lever 2 is attached to the shaft 23 installed on the inner wall surface of the case 2.
One end of 4 is rotatably pivotally mounted, and one end of a spring 25 fitted and inserted into the shaft 23 is in pressure contact with the inner wall surface of the hub lever 24 and the other end is in pressure contact with the case 2 (see FIG. 1).

Therefore, the hub lever 24 has a protrusion 26 provided on the side surface.
Is urged in a direction of coming into contact with the recess 8 between the lever drive cams 6, 7.

The rear end 29 of the latch bolt 28 contacts the free end 27 of the hub lever 24.

The latch bolt 28 is a spring 3 inserted between a spring receiver 30 provided on the case 2 and a head 31 of the latch bolt 28.
The rear end portion 28 presses the free end 27 by being urged in the direction of protruding to the outside of the door by 2.

A permanent magnet 33 is attached to the end of the door in the case 2.

The operation of the locking / unlocking mechanism of the electric lock A configured as above will be described.

(Locked state) Since the solenoid 11 is not energized, as shown in FIG. 1, the guide plate 13 is pulled by the spring 14 so that the end of the locking plate 15 is fitted into the engagement groove 10 and the outdoor handle. Cannot be operated to rotate the outdoor hub 3.

Due to the spring 25, the hub lever 24 causes the lever drive cams 6, 7
Between the free end 27 and the free end 27.
Moves toward the head 31 of the latch bolt 28, and the head 31 of the latch bolt 28 projects from the door and engages with the strike of the door frame, so the door cannot be opened from the outside.

However, the indoor hub 4 is rotatable because it is not engaged with the locking plate 15, and if the indoor hub 4 is rotated clockwise by rotating the indoor knob, the lever drive cam 6 is released.
Pushes the protrusion 26 to rotate the hub lever 24 counterclockwise, moves the free end 27 to the right and pushes the rear end 29 to push the head 31 of the latch bolt 28 into the door. You can open the door.

Even when the indoor hub 4 is rotated in the counterclockwise direction, the lever drive cam 7 presses the protrusion 26, so that the door can be similarly opened.

As described above, the door can be opened from the inside by turning the knob on the inside in any direction.

(Unlocking) When an unlocking signal is issued due to coincidence of the personal identification number, the solenoid 11 is energized, the plunger 12 projects against the spring 14, the guide plate 13 moves to the left and is attracted to the permanent magnet 33. .

Therefore, even after the solenoid 11 has been de-energized after being energized for a certain period of time, the guide plate 13 is still in the position of being attracted to the permanent magnet 33, and the locking plate 15 is kept in a state of being disengaged from the engagement groove 10. .

The outdoor side hub 3 which is disengaged from the locking plate 15 is rotatable.

At this time, the projection 21 of the return plate 19 is relatively moved by the leftward movement of the locking plate 15 from the position in the elongated hole 17 near the guide plate 13 to the position on the opposite side near the end of the elongated hole 18.

When the handle on the outdoor side is operated to rotate the outdoor hub 3 in the clockwise direction from such a state, the return plate 19 pressed against the plate-shaped portion 22 by the plate drive cam 9 causes the pin 1 to move.
8 is rotated counterclockwise about the fulcrum and the projection 21 is formed into the long hole 1
The guide plate 13 which pushes the end portion to 7 and moves the locking plate 15 to the right and is separated from the permanent magnet 33 receives the tensile force of the spring 14, and the locking plate 15 abuts the plate drive cam 9.

On the other hand, the clockwise rotation of the outdoor hub 3 causes the outdoor hub 3 to rotate.
Since the plate drive cam 9 presses the protrusion 26, the head portion 30 of the latch bolt 28 can be retracted into the door and opened as in the case where the indoor hub 4 is rotated.

When the outdoor hub 3 is rotated in the counterclockwise direction, the lever drive cam 6 presses the inclined surface of the end of the plate-like portion 22, so that the return plate 19 moves rightward in the same manner as described above, and the lever is driven. Since the cam 7 presses the protruding portion 7, the door can be opened similarly to the above.

As described above, the outdoor side hub 3 is unlocked regardless of which direction it is rotated.

[Effect of device]

 The present invention has the following effects.

(a) Since the door can be opened by rotating the outdoor handle in either direction after unlocking, the inconvenience that the handle can be rotated only in one direction as in the past is eliminated, and it is not convenient for the person who opens the door. The fear of giving pleasure has disappeared.

(b) Since this locking / unlocking mechanism has a small number of parts and the structure is simple, it has the advantages of being compact and compact, operating smoothly and reliably, and having a durable and reliable electric lock. .

[Brief description of drawings]

1 and 2 show an embodiment of the present invention, FIG. 1 is a partially cutaway front view of an electric lock, and FIG. 2 is a perspective view of some main parts constituting the locking / unlocking mechanism. A: Electric lock, 1 ... Case cover, 2 ... Case, 3
...... Outdoor hub, 4 …… Indoor hub, 6, 7 …… Lever drive cam, 9 …… Plate drive cam, 10 …… Engagement groove,
11 ... Solenoid, 13 ... Guide plate, 14 ...
… Spring, 15… Locking plate, 17… Slot,
19 ... Return plate, 21 ... Protrusion, 24 ... Hub lever, 25 ... Spring, 26 ... Protrusion, 28 ... Latch bolt, 32 ... Spring, 33 ... Permanent magnet.

Claims (1)

[Scope of utility model registration request] 1. A case provided inside an end portion of a door on the side of a door frame, and two lever drive cams and one lever drive cam fitted on the case so as to be rotatable and rotated by an outdoor handle or the like. Of the plate drive cam and an outer side hub in which an engaging groove is formed in the tip of the plate drive cam, and a hub that is rotatably fitted in the case and is rotated by a knob in the room An inner hub having a lever drive cam formed therein, a locking plate that slides in the case by the operation of a solenoid fixed in the case, and an end of the locking plate engages and disengages with an engaging groove of the plate drive cam, A return plate pivotally attached to the case, one end of which engages with the locking plate and the other end of which is adjacent between the plate drive cam and the lever drive cam, and one end of which is pivotally attached to the case and the other end engages with a latch bolt. Projected in the middle part Electric lock unlocking mechanism protrusion which is characterized by comprising a Habureba biased in a direction to protrude between the two lever drive cam of the indoor-side hub and the outdoor-side hub.