JPS5810849Y2 - door lock - Google Patents

Description

[Detailed explanation of the invention] This invention is a retractor using a cam that is linked to the rotation of the knob.
This relates to a door lock that opens the door by sliding the latch bolt and pulling in the latch bolt. The purpose of this invention is to provide a door lock whose locking/unlocking state can be controlled electrically, and which can bring about various changes in the lock's operating mode.

One embodiment will be described below with reference to the drawings.

Reference numeral 1 denotes a latch bolt, which has a guide 1b at the rear end of the spindle 1a that fits into a guide hole in the case 2 and the case lid, and is provided so as to be retractable from the case.

1C is a spring that always biases the latch bolt in the projecting direction.

Reference numeral 3 denotes a tractor which is slidably provided within the case 2 and is engaged with the cam 4 at the bent pieces 3a, 3a'.

5 is a spring holder, which is connected to the other bent piece 3b of the retractor 3.
A compression coil spring 6 is installed between the two.

The cam 4 is rotatable in conjunction with the rotation of the inner and outer knobs by an operating rod of the outer knob that passes through the through hole 4a and fits into the inner knob.

The latch bolt 1 is in contact with the bent piece 3a of the retractor 3 at the guide 1b, and as the cam 4 rotates and the tractor 3 retreats, the latch bolt 1 can also be retracted into the case 2.

Reference numeral 7 denotes a trigger bolt, which is always urged in the protruding direction by the elastic force of a spring 7a, and is retracted into the case 2 when the door is closed.

Reference numeral 8 denotes a latch stopper, which is rotatably supported on a shaft, is given a counterclockwise elastic force by a spring 8a, and can come into contact with the rear end 1d of the head of the latch bolt 1 which is in a protruding state. There is.

7b is an interlocking piece in the form of a trigger bolt, which engages the tip of the latch stopper 8 when the trigger bolt 7 protrudes when the door is open and holds it in a position where it does not contact the rear end 1d of the head of the latch bolt. , in the recessed state with the door closed, the latch stopper 8 is in a free state, and ~
It is designed to come into contact with the throat rear end 1d.

When the knob is rotated in the closed state, the cam 4 rotates to move backward, and the protrusion 3C formed on the tractor 3 presses the other end 8b of the latch stopper and rotates it clockwise, causing the rear end of the head to move backward. The latch bolt 1 is pulled in after releasing the engagement state with the latch bolt 1d.

Next, to explain the locking/unlocking structure, in this example, a locking member capable of locking and separating with the beam tractor 3 is provided, and this locking member is connected to a plunger of a solenoid to lock and release the retractor 3. can be controlled electrically.

The locking member includes a slider 10 connected to the plunger 9a of the solenoid 9, and a locking lever 11 having a protrusion 11a that engages with a notch 10a of the slider.

The locking lever 11 is rotatably held on a shaft 12, and a spring 11 with one end hung on a knock 11b
C in a counterclockwise direction, that is, in a direction in which the retractor 3 engages with the protrusion 3C in the vicinity thereof.

10b is an engagement piece provided on the slider 10 that engages with the plunger 9a, and a second engagement piece 10b' is formed at a position where the mounting direction of the solenoid 9 is changed by 180 degrees.

Reference numeral 13 denotes a stopper rotatably held on the shaft 14, to which a spring 13b constantly applies a clockwise elastic force, and the bent piece 10 formed on the slider 10
It is in a state where it is in contact with the side surface of C.

When the slider 10 is operated by energizing the solenoid 9, the tip step portion 13b engages with the side edge of the bent piece 10C, and even if the solenoid 9 is not energized, the spring force applied to the plunger 9a or the elasticity of the spring 11C is The slider 10 is held in the operating position against the force.

13C is a folded piece for returning the stopper. When the slider 10 is engaged with the slider 10, when the return rod is inserted from the front side and this folded piece 13C is pushed, the stopper 13 rotates counterclockwise and the slider 10 is a state in which the coherence state is released and the state returns to the old state.

The state shown in FIG. 1 shows the door in an open state, and the lock/unlock structure is in a locked state.

That is, when the door is closed in the illustrated state, the latch bolt 1 and the trigger pole 1-7 each retract into the case, and only the latch bolt 1 protrudes again and fits into the strike.

In this state, the locking lever 11 is engaged with the retractor 3 near the protrusion 3C,
The inner and outer knobs cannot be rotated and are locked.

In this case, the latch stopper 8 is also engaged with the head rear end portion 1d of the latch bolt 1, and unauthorized unlocking is also prevented.

When the solenoid 9 is energized, the plunger 9a is attracted, the slider 10 slides, and the locking lever 11 is rotated clockwise, so that the retractor 3
The locking state with the stopper 1 is released, the knob can be rotated, and the unlocked state can be achieved.
3 and the slider 10, it is maintained even after the solenoid 9 is de-energized.

After opening the door, insert the return rod from the front side and bend the bent piece 13.
By pressing C and rotating the stopper 13, the lockable state can be restored again.

As mentioned above, the lock is electrically unlocked by energizing the solenoid 9, but the structure also allows mechanical unlocking.

That is, the latch actuation hub 15 and the latch actuation lever 1
The latch actuation hub 15 is rotatably provided in conjunction with the rotation of the cylinder or thumb turn, and the latch actuation hub 15 is connected to the latch actuation hub 15 at one end, and the latch actuation hub 15 is rotatably provided. The other end of the lever 16 is linked to the guide 1b of the latch bolt 1, so that the latch bolt 1 can be retracted when the latch actuation hub 15 is rotated, regardless of the state of engagement between the locking lever 11 and the retractor 3. This is what I did.

The latch stopper 8 is engaged with the rear end 1d of the head when the latch operating lever 16 is rotated, the other end 8 of the latch stopper 8 is engaged by the protrusion 16a provided on the back surface.
It is released by pressing b and rotating the latch stopper 8 clockwise.

The above is unlocked by energizing the solenoid 9 and maintained in the unlocked state by the stopper 13.
We have explained lock type I in which the return to the locked state is a manual method in which the stopper 13 is rotated back using a return rod, but if the stopper 13 is removed, the unlocked state remains only while the power is on, and the power is turned off. If so, it can be a type II lock that automatically returns to the locked state.

In addition, the mounting direction of the solenoid 9 is changed by 180 degrees, and the plunger 9a is connected to the retaining piece 10b' side of the slider 10.
If C is reversed and one end is applied to the lower side of the knock 11b to apply a clockwise elastic force,
Lock type III can be used, which maintains the locked state only while the solenoid 9 is energized and automatically returns to the unlocked state when the energization is cut off.

In addition, in this lock type, if the installation position of the stopper 13 and the formation position of the bending piece 10C of the slider 10 are adjusted and provided, the lock will be in a locked state when energized, and the locked state will be maintained by the stopper even if the energization is turned off. It can be of type IV.

In this case, for the unlocking operation, a separate solenoid is provided to rotate the stopper 13 back, and the lock is electrically unlocked.

In addition, the stopper 1 with the return rod is also used in the lock type ■ above.
If the return rotation of 3 is changed to electrical return rotation using a separate solenoid, a lock type (2) in which the locking operation can also be performed electrically can be achieved.

Furthermore, in the above embodiment, the locking member interlocked with the solenoid is provided so as to be able to engage and separate from the retractor, but the same effect can be obtained even if the locking member is capable of engaging and separating from the cam 4. It will be done.

In this case, if two cams are provided for the indoor knob and the outdoor knob, and two sets of locking members and solenoids are provided, the locking and unlocking of the indoor and outdoor sides can be controlled independently. It is also possible to have a unique lock type VI.

In addition, among the other symbols in the drawing, 17 and 18 are reed switches that use permanent magnets, and the trigger bolt 7
A reed switch 17, which has a permanent magnet attached to it, is used to indicate whether the door is open or closed, and a reed switch 18, which has a permanent magnet attached to the slider 10, is used to indicate whether the door is locked or unlocked.

The door lock according to this invention is particularly lock type II among the above lock types.
, III and VI, and as is clear from the above, the solenoid plunger is equipped with a solenoid plunger that can change the mounting state by 180°. The feature is that a slider is provided with a piece, and a locking lever is linked to the slider, which is spring-biased and swingable so as to be constantly engaged with or separated from the cam or tractor. The device maintains the unlocked or locked state, and automatically returns to the locked or unlocked state when the power is cut off.The same parts can be used in a variety of operating modes, and it can be used for gates and entrance doors.・We have been able to provide a unique door lock that can be operated in an optimal manner depending on the application, such as an emergency door, and the user's requests.

[Brief explanation of drawings]

Figure 1 shows an example of the door lock according to this invention, with the case lid removed and a front view showing the internal mechanism of the lock body.
The figure is a front view of the electrical actuation mechanism section, showing the unlocked state. FIG. 3 is a partial right side view of the mechanism. 1... Latch bolt, 3... Retractor 14... Cam, 9... Solenoid, 9a... Plunger 10... ...Slider, 11...Locking lever 13...
···stopper

Claims (2)

[Scope of utility model registration request] (1) In a door lock in which a latch bolt can be retracted by sliding a retractor via a cam that is linked to the rotation of a knob,
It has a plunger that is always given elastic force in the protruding direction,
It has a solenoid whose mounting direction can be changed by 180 degrees, and a first retaining piece and a second engaging piece for the plunger located at the front and rear of the solenoid.
The slider has a slider that can be connected to the plunger in any installation state that differs by 0 degrees, and a locking lever that is swingable by a spring to be constantly engaged with or separated from the cam or tractor. A door lock that is linked to. (2) It has two cams that individually interlock with the indoor knob and the outdoor knob, and each cam has a locking lever that can be engaged and released, a slider that is linked to this locking lever, and this slider is connected. A door lock according to claim 1, which is a utility model, and is provided with two sets of solenoids each having a plunger.