JPH0739777B2 - Automatic locking device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an automatic locking device used for a doorway opening / closing door of a general house, a condominium such as a condominium, a hotel, or the like. The present invention relates to a dual-purpose automatic locking device that can be easily suppressed and can be easily switched and used as a general locking device.

[Conventional technology and problems]

Conventionally, a lock attached to a hinged door at a doorway has been locked and unlocked by a thumb turn from the inside and a key from the outside.

However, if the user forgets to lock the door after closing it, it may be stolen, so it is desirable to lock the door at the same time as closing the door, and in the case of a hurry, it is convenient if the time and effort for locking can be saved.

For this purpose, cylindrical locks and hotel locks with an automatic locking function have already been put into practical use, but on the contrary, when there is a little work outdoors, for example, when going to get milk or newspapers or outdoors. If the user inadvertently closes the door completely while talking, there is a risk that the key will be locked out unless he has a key, and in such a case, a locking device that is not automatically locked is desired.

In this way, it would be convenient to have a dual-use locking device that can be used properly such that even one door is automatically locked when going out and not automatically locked when going out for a while.

At present, there is no practical dual-purpose type, and a tool may be used to suppress the automatic locking function, but each time the tool is used to fix or release the automatic locking function. Is inconvenient.

The present invention has been made focusing on such problems,
(EN) A convenient dual-purpose locking device that can suppress an automatic locking function with an extremely simple operation.

[Means for solving problems]

The present invention is a locking device in which a dead bolt having a large mechanical strength is provided with an automatic locking function, and an automatic locking suppressing function is added, and a trigger bolt that is inserted into and retracted from a case and is biased outward. A stopper that tilts when the trigger bolt retracts toward the case, tilts the trigger bolt, a slider that is disengaged by the tilting of the stopper and moves, and a cam plate that rotates in conjunction with the movement of the slider. And an automatic locking device having a dead bolt that is pushed by the cam plate and projects from the case,
Engraving the locking groove on the trigger bolt, the protrusion protruding from the stopper engages with the locking groove when the trigger bolt retracts more than the retracted amount when the door is closed, and the stopper engages with the slider. The structure is such that the engagement is maintained.

[Action]

 With the above-mentioned configuration, it can be used as follows.

(A) When locking automatically When the door is closed as it is, the trigger bolt protruding from the case is retracted into the case, the stopper is tilted and the engagement with the stopper is released, the slider moves, and the cam plate that interlocks with the slider moves. Rotate.

Although the dead bolt protrudes from the case due to the rotation of the cam plate, the cam plate also acts on the guard lever to lock the protruding dead bolt, so that the door is automatically locked.

(B) Locking When the cam plate is rotated using a key or the like, the guard lever returns from the locking position as the cam plate returns and the dead bolt also interlocks with the return of the cam plate. Immerse yourself in the case.

Further, the slider that interlocks with the cam plate returns to the old position and engages with the stopper again.

Then, when the door is opened, the trigger bolt protrudes from the case and the automatic locking is possible.

(C) When suppressing the automatic locking function When the dead bolt is prevented from protruding with your finger and the trigger bolt is pushed and retracted beyond the retracted amount when the door is closed, the protrusion of the stopper is inserted into the locking groove of the trigger bolt. , The stopper remains engaged with the slider,
Even if you release your hand from the dead bolt, the dead bolt does not protrude, so even if you close the door it will not be locked automatically.

(D) When releasing the restraint of the automatic locking function When the cam plate is rotated in the unlocking direction with a key or thumb turn, the slider moves and the stopper that hits the slider tilts to release the engagement of the trigger bolt. , The trigger bolt protrudes and the automatic locking function is restored.

〔Example〕

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

FIG. 1 shows a front view of the automatic locking device in a door open state, reference numeral 1 shows a case embedded in an end surface of a door D, and a front surface of the case 1 (left side in the drawing) has a trigger bolt insertion hole 2 and The dead bolt insertion hole 3 is formed.

The trigger bolt 4 is inserted into the trigger bolt insertion hole 2 so as to be retractable.

The trigger bolt 4, as shown in FIGS. 6 and 7,
A shoulder 4a having a vertical surface is formed on the left side of the lower surface, and V is formed on the upper surface.
A V-shaped locking groove 4b is engraved.

And, a spring receiver 4c having a vertical surface is provided on the right side of the lower surface.

An L-shaped spring bearing 5 is attached to the inner surface of the case 1,
A spring 6 is mounted between the spring receivers 5 and 4c.

Therefore, the trigger bolt 4 is biased toward the left side in FIG. 1, and the shoulder portion 4a of the trigger bolt 4 is in contact with the door side plate 7.

Above the trigger bolt 4, a stopper 9 is rotatably pivotally attached to a pin 8 planted on the inner wall of the case 1, and is urged clockwise by a spring (not shown).

The stopper 9 has a protrusion 9a on the lower side, and when the trigger bolt 4 retracts (moves to the right), the trigger bolt 4
Comes into contact with the protrusion 9a, and the stopper 9 moves counterclockwise.

When the trigger bolt 4 is further retracted, the protrusion 9a becomes a locking groove.
It is fitted into 4b, and the stopper 9 is prevented from rotating counterclockwise.

Above the stopper 9, there is a recess that engages with the stopper 9.
A slider 10 having 10a is arranged.

As shown in FIGS. 8 and 9, the slider 10 is provided with a hole 11 having a bottom 11a in the longitudinal direction, a long hole 12 is formed at a right angle to the hole 11, and a protrusion 13 protruding on both side surfaces. Is projected.

Then, the rack 14 is provided on the lower surface.

The protrusion 13 is fitted into a long hole 15 formed in the case 1, and the pin 16 implanted in the case 1 is fitted into the long hole 12 of the slider 10.

Therefore, the slider 10 can slide in the left-right direction in FIG.

A spring 17 is attached between the bottom 11a of the hole 11 of the slider 10 and the pin 16, and the slider 10 is biased rightward.

Reference numeral 18 is a cam plate pivotally mounted on the case 1 and rotated by a thumb turn or a key, and provided with a projection 19, a pinion 20 meshing with the rack 14, and a drive piece 21 on the outer circumference.

A pin 22 is fixed to the driving piece 21, and one end of a spring 23 is wound around the pin 22.

The other end of the spring 23 is wound around a pin 24 provided on the inner surface of the case 1.

The dead bolt 25 is fitted into the dead bolt insertion hole 3 of the case 1, and the shaft 26 fitted into the hole provided in the dead bolt 25 and projecting from both ends of the dead bolt 25 is inserted into the long hole 27 provided in the case 1. It is fitted loosely.

Therefore, the dead bolt 25 can slide in the left-right direction in the drawing.

The dead bolt 25 has a groove 28 that engages with the drive piece 21,
A tapered portion 29 is formed at the end of the groove 28 on the opening side.

A step portion 30 is provided on the upper surface of the dead bolt 25, and a pin 31 fixed to the case 1 and a guard lever 32 are provided above the step portion 30.
Is pivotally attached.

As shown in FIGS. 10 and 11, the guard lever 32 has a lever 33 having a corner portion 33a and a lever 34 protruding substantially in the opposite direction, and a spring engaging groove 35 is formed on a side surface thereof. Set up.

A spring 36 is fitted in the spring engagement groove 35 to stabilize the guard lever 32 in the neutral position shown in FIG.

Next, the operation of the automatic locking device configured as described above will be described.

In the door open state shown in FIG. 1, the trigger bolt 4 pressed by the spring 6 protrudes from the case 1, but the stopper 9 biased by the spring in the clockwise direction is recessed in the slider 10.
I am involved in 10a.

In the cam plate 18 having the pinion 20 that meshes with the rack 14 of the slider 10, the drive piece 21 presses the concave groove 28 to the right side by the spring 23, and the dead bolt 25 is retracted into the case 1.

The stopper 33 is kept in a neutral state by a spring 36.

Next, when the hinged door D is closed, as shown in FIG. 2, the trigger bolt 4 comes into contact with the striker S on the fixed frame side and is pushed into the case 1, and the right end portion of the trigger bolt 4 protrudes from the stopper 9. Upon hitting 9a, the stopper 9 tilts counterclockwise against the spring urging clockwise, the stopper 9 and the recess 10a of the slider 10 are disengaged, and the slider 10 is pushed to the right by the pressing force of the spring 17. The cam plate 18 having the pinion 20 that meshes with the rack 14 rotates clockwise, the driving piece 21 moves to the left while pressing the dead bolt 25 to the left, and the left moving end by the spring 23. The dead bolt 25 is pushed into the fitting hole provided in the striker S.

On the other hand, the tip 33a of the lever 33 of the guard lever 32 tilted in the counterclockwise direction by pushing the lever 34 by the driving piece 21 engages with the step portion 30 of the dead bolt 24, and the dead bolt 25 is locked in the locked state. .

Therefore, only by closing the hinged door, the automatic locking by the powerful dead bolt is completed.

Next, unlocking the chained door will be described.

When the cam plate 18 is rotated counterclockwise by the key or thumb turn, as shown in FIG. 5, the slider 10 having the rack 14 that meshes with the pinion 20 moves to the left and the driving piece 21 of the cam plate 18 moves. The guide lever 32 is returned from the lever 14 to the neutral position by the spring 36,
The tip of 33 releases the engagement of the step portion 30 of the dead bolt 25.

Thus, the dead bolt 25 is retracted into the case 1 by the right movement of the drive piece 21.

On the other hand, the recess 10a of the slider 10 reaches the stopper 9, and the stopper 9 is urged clockwise by the spring.
Enters the recess 10a, locks the slider 10, and returns to the unlocked state shown in FIG.

Next, a case where the automatic locking function is suppressed will be described.

As shown in FIG. 3, the tip of the dead bolt 25 is held down by fingers to prevent it from protruding, and when the trigger bolt 4 is pushed in more than the retracted amount when the door is closed, the stopper is inserted into the locking groove 4b of the trigger bolt 4. The protrusion 9a of 9 is fitted and the trigger bolt 4 is locked.

The trigger bolt 4 is biased to the right by a spring 6, but the protrusion 9a and the locking groove 4b are engaged with each other, so that the trigger bolt 4 does not protrude even if a finger is released from the trigger bolt 4. Instead, the stopper 9 also remains biased in the clockwise direction by the spring 6, and the engagement state between the stopper 9 and the recess 10a of the slider 10 is maintained (see FIG. 4).

Even if the door is closed in this state, the slider 10 and slider
The cam plate 18 meshing with 10 is in a stopped state, the dead block 25 does not project, and the door is held in an unlocked state.

Next, in order to release the restraint of the automatic locking function, the cam plate 18 is rotated in the unlocking direction by the key or thumb turn, and the slider 10 moves to the left side, hits the stopper 9 and moves the stopper 9 counterclockwise. The trigger bolt 4 tilted and disengaged from the protrusion 9a and the engagement groove 4b and released from the engagement moves to the left by the pressing force of the spring 6 and protrudes from the case 1 (see FIG. 5). .

When the rotational force generated by the key or thumb turn is removed, the state shown in FIG. 1 is restored.

〔effect〕

 The present invention has the following effects.

(1) The present automatic locking device can be used as an automatic locking device or as a locking device with suppressed automatic locking function.

Moreover, since the switching operation is extremely simple and no tools are required, anyone can easily select and use it at any time.

(2) If the trigger bolt is pushed into the case, the automatic locking function is suppressed, so that the suppression can be immediately discriminated, and it is convenient in use because it does not require a check for confirmation.

(3) Although the automatic locking device can be used as an automatic locking device or as a locking device that is not automatically locked, it has the advantage that the manufacturing cost does not increase because it does not change from the number of constituent parts of the automatic locking device alone.

(4) Since this locking device locks with dead bolts,
The mechanical strength is greater than that of the latch fixed type or dead latch type, and the locking reliability is increased.

[Brief description of drawings]

1 to 11 show an embodiment of the present invention, FIG. 1 is a front view showing an unlocked state of an automatic locking device, FIG. 2 is a front view showing an unlocked state of an automatic locking device, and FIG. The figure is a front view showing how to suppress the automatic locking function, Fig. 4 is a front view of the automatic locking device with the automatic locking function suppressed, and Fig. 5 is a front view of the automatic locking device during the operation of releasing the suppression of the automatic locking function. Fig. 6, Fig. 6 is a plan view of the trigger bolt, Fig. 7 is a front view of the same as above, Fig. 8 is a side view of the slider, Fig. 9 is a front view of the same as above, Fig. 10 is a front view of a stopper, and 11 The figure is a bottom view of the above. D: hinged door, S ... striker, 1 ... case, 4
...... Trigger bolt, 4b ... Lock groove, 6 ... Spring, 9 ...
… Stopper, 9a …… Projection, 10 …… Slider, 14…
… Rack, 17 …… Spring, 18 …… Cam plate, 19 …… Protrusion, 20 …… Pinion, 21 …… Drive piece, 23 …… Spring, 25…
… Dead bolt, 28… Groove, 30… Step, 32… Guard lever, 36… Spring.

Claims (1)

[Claims] 1. A trigger bolt that is inserted into and retracted from a case and is biased outward, a stopper that tilts by hitting the trigger bolt when the trigger bolt retracts to the case side, and engagement by tilting of the stopper. Is locked to the trigger bolt by an automatic locking device having a slider that is released and moves, a cam plate that rotates in conjunction with the movement of the slider, and a dead bolt that is pushed by the cam plate and projects from the case. A structure in which a groove is formed, and when the trigger bolt retracts more than the retracted amount at the time of closing the door, the projection protruding on the stopper engages with the locking groove, and the stopper holds the engagement of the slider. The automatic locking device characterized in that