JPH10140896A - Automatic lock device for shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide such an automatic lock device for a shutter with excellent dust and water proof in a simple structure as being capable of preventing noise when the shutter is locked and unlocked. SOLUTION: A lock plate 56 with slant portions 56a, 56b at the end and a slider plate 57 with a slant portion 57a at the end are provided on a case mainbody 50 in a slidable manner. The ends of the lock plate 56 and the slider plate 57 are protruded from the opening 50e of the case mainbody 50 by a coil spring 58. A lock bar fixed to a shutter thrusts the lock plate 56 and the slider plate 57. When it is moved to a lock position, a lock mechanism formed with an association member 53 and a shaft 55 locks the lock plate 56 at the protruded position and an unlock mechanism formed with a solenoid 51 and a plunger 52 unlocks the lock plate 56.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter lock device installed in a house or the like, and more particularly, to a shutter automatic lock device capable of automatically locking a shutter at a closed position.

[0002]

2. Description of the Related Art A conventional automatic lock device for a shutter includes, as described in Japanese Utility Model Publication No. 5-38207, a lock bar in which a locking portion is pushed into a guide rail by a spring force. Provided at the lower end of the
A lower end of the guide rail is provided with a rotatable stopper body having a guide slope for guiding the locking portion of the lock bar and a locking surface for locking the locking portion.

Further, the guide rail is provided with a solenoid for holding the stopper body projecting into the guide rail via an interlocking body and for retracting the stopper body.

When the lock bar slides down by contacting the guide slope of the stopper body when the shutter is lowered, when the lock bar passes through the guide slope, the locking portion is locked by the locking surface of the stopper body to lock the lock bar. Is locked. As a result, the shutter is automatically locked in the fully closed state. Further, the stopper body is retracted by energizing the solenoid to release the lock of the lock bar, and the shutter can be pulled up.

[0005]

The above-mentioned automatic locking device has a structure in which a lock bar provided on a shutter side is slidable and a stopper body provided on a guide rail is rotatable. However, the configuration is complicated, and the size of the apparatus is increased, and the cost is increased.

Further, since the stopper body is structured to rotate, a guide rail for allowing the stopper body to enter and exit is provided.
There is a problem that the apertures provided in the door are always open and lack dust and water resistance.

Furthermore, when the lock bar is locked, a collision sound is generated when the locking portion of the lock bar comes into contact with the stopper body,
When the lock is released, a return sound of the lock bar which returns by the spring force is generated.

Accordingly, an object of the present invention is to provide an automatic locking device for a shutter of this type which is small in size, inexpensive, has excellent dustproof and waterproof properties, and does not generate noise when locked and unlocked. And

[0009]

In order to achieve the above-mentioned object, the present invention provides a shutter lock device provided on a guide rail for locking a shutter lock bar to maintain a shutter closed state. A lock bar fixed to the shutter is provided slidably on the main body, and has an inclined portion at the tip end, which is always urged to the advanced position by a spring force so that the inclined portion protrudes from the opening of the case body. A lock plate which is pressed by the lock bar and slides from the advanced position to the retracted position when the lock plate is moved to the lock position, and a lock plate provided on the case body, wherein the lock bar is inclined by the lock plate. When you get over the section and move to the lock position,
A lock mechanism that locks the lock plate sliding from the retracted position to the extended position by the spring force at the extended position and holds the lock bar at the locked position; and the lock plate provided on the case body, And a lock release mechanism for releasing the lock of the shutter.

[0010]

In this automatic locking device, a lock plate having an inclined portion at the tip is slidably provided on the case body.
The lock plate is urged to the advanced position by a spring force so that the tip protrudes from the opening of the case body.

When the lock bar is lowered in accordance with the closing operation of the shutter, the lock bar comes into contact with the inclined portion of the lock plate and pushes the inclined portion. The lock plate pushed by the lock bar slides from the advanced position to the retracted position against the spring force, and when the lock bar moves over the inclined portion to the lock position, the lock plate is moved by the spring force. Return to the advanced position. And lock play
When the plate returns, the lock mechanism provided on the case body locks the lock plate at its advanced position,
The lock bar is held in the locked position, and the shutter is kept closed.

When the shutter is opened, when the lock release mechanism provided on the case body is operated, the lock release mechanism releases the lock of the lock plate, whereby the lock bar rises from the lock position. Allowed, the shutter can be opened.

[0013]

Next, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show the appearance of an automatic lock device according to the present invention. FIG. 1 is a front view of the lock device, FIG. 2 is a rear view of the lock device, FIG. 3 is a left side view of the lock device, 4 is a plan view of the lock device, FIG. 5 is a partially enlarged rear view showing the inside of the lock device by removing the rear case body, and FIG. 6 is a view of the lock device from the right side. FIG. 7 is a partially enlarged cross-sectional view of the lock device as viewed from the left side.

In these drawings, reference numeral 50 denotes a front case 5
A housing body is formed of a housing 50a and a rear case 50b. A housing is formed inside the housing. Above the housing, a solenoid 51 fixed to the front case 50a is provided. At the lower end of the plunger 52 provided in the solenoid 51, an interlocking member 53 composed of an interlocking plate 53a and a driven plate 53b provided so as to sandwich the interlocking plate 53a is connected, and the lower end of the solenoid 51 and the interlocking plate 53a are connected. The interlocking member 53 is always urged downward together with the plunger 52 by a coil spring 54 interlocked with the upper end of the armature.

The driven plate 53b of the interlocking member 53 includes
A shaft 55 is fixed laterally to the lower end.

The interlocking member 53 and the shaft 55 constitute a lock mechanism, and the solenoid 51 and the plunger 52 constitute a lock release mechanism.

A lock plate 56 and a slider plate 57 are housed below the housing of the case body 50. As shown in FIG. 6, the lock plate 56 has a front end formed in a mountain shape so as to have inclined portions 56a and 56b at the front end, and a long groove 56c into which a coil spring 58 described later is inserted is formed at the rear end side. In addition, a notched engaging portion 56d is provided at the upper rear end.

As shown in FIG. 7, the slider plate 57 has an inclined portion 57a and a vertical portion 57b at the front end, and a long groove 5 for inserting a coil spring 59 described later at the rear end side.
7c, and a notched engaging recess 57d is provided in the upper portion near the rear end.

On the other hand, in the front case 50a of the case main body 50, guide holes 50c and 50d for sliding the above-mentioned sliders 56 and 57 are formed, and these guide holes 50c and 50d are formed.
The tip of d is an opening 50e.

The above-described lock plate 56 and slider
The plate 57 is provided with a guide hole 50 formed in the front case 50a.
c, 50d. The ends of the lock plate 56 and the slider plate 57 are guided by coil springs 58 and 59 interposed between the ends of the long grooves 56c and 57c and the rear case 50b.
The case 50 is housed in the case body 50 so as to protrude from an opening 50e communicating with the case d.

In the lock plate 56 and the slider plate 57, raised portions 56e, 57e are formed in front of the long grooves 56c, 57c, respectively.
A guide groove (not shown) for guiding 57e is formed in the front case 50.
a, the raised portions 56e and 57e abut on the tips of the guide grooves, thereby forming the lock plate 56 and the slider plate 57.
Are prevented from coming out of the opening 50e. Note that the guide groove is formed by the lock plate 56 and the slider plate.
In the state where the projections 57 are protruding, the ridges 56e,
The long groove 57e has a groove end that abuts.

The lock plate 56 and the slider urged in the projecting direction by the coil springs 58 and 59.
The shaft 55 provided on the driven plate 53b of the interlocking member 53 abuts against the plate 57, as shown in FIG.
3 is constantly pushed upward against the coil spring 54.

The lock plate 56 is located between the driven plates 53b as shown in FIG. 5, and is not joined to the shaft 55 as shown in FIG.

Reference numeral 61 in the figure denotes a power supply cord connected to a solenoid. The above-mentioned automatic locking device is attached to a lower portion of a guide rail for guiding a shutter so that the shutter can be opened and closed.

Next, the operation of the above-described automatic lock device will be described. FIG. 8 is a view for explaining the operation of the automatic lock device. Reference numeral 60 shown in FIG.
It is.

As shown in FIG. 8 (a), the lock plate 56 and the slider plate 57
Due to the urging forces of 8, 59, each of the tips is
More protruding.

When the lock bar 60 is lowered in accordance with the closing operation of the shutter, the lock bar 60 is locked.
The sliders 56 and the slider plate 57.
6a and 57a are pushed.

The lock plate 56 and the slider plate 57 pushed by the lock bar 60 are opposed to the respective coil springs 58, 59, so that the respective guide holes 50c,
It moves to the retracted position (left direction in the figure) while sliding on 50d.

That is, when the lock plate 56 moves first, the engaging portion 56d passes directly below the shaft 55, and the upper edge of the lock plate 56
Abuts. Subsequently, the slider plate 57 moves, and the engagement concave portion 57d is located immediately below the shaft 55.

Next, as shown in FIG. 8 (b), the lock bar 60 is further lowered, and the inclined portion 56 of the lock plate 56 is lowered.
When the lock plate 56 gets over the position a, the lock plate 56 is moved to the projecting position by the coil spring 58. At this time, the slider plate 57 is at the retracted position since the vertical portion 57b abuts on the lock bar 60. This slider
At the retracted position of the plate 57, the engagement recess 57d of the slider plate 57 is
5 is located immediately below.

When the lock plate 56 returns to the protruding position while the slider plate 57 is at the retracted position, the shaft 55 is moved by this return movement.
6 and faces the engaging portion 56d of the slider plate 57 and the engaging concave portion 57d of the slider plate 57.
The shaft 55 is lowered by the urging force of
The slider 56 falls into the engaging recess 56d of the slider plate 57.

As a result, since the engaging portion 56d is locked by the shaft 55, the lock plate 56 is locked at the protruding position, and as shown in FIG. To lock the shutter in the closed state.

Next, when opening the shutter, the solenoid 51 is energized. This energization causes the plunger 52
Is sucked, the interlocking member 53 rises against the coil spring 54, and the shaft 55 comes out of the engaging portion 56d of the lock plate 56 and the engaging concave portion 57d of the slider plate 57. Thus, the lock plate 56 can be moved to the retracted position, and the shutter can be opened.

The interlocking member 53 is prevented from rising when the interlocking plate 53a comes into contact with a receiving portion 50f (see FIG. 6) formed on the case body 50.

When the shutter is opened, the lock bar 6 is opened.
8 pushes the inclined portion 56b of the lock plate 56, and FIG.
As shown in (d), the lock plate 56 moves to the retracted position.

When the lock bar 60 separates from the lock plate 56 and the slider plate 57, the lock plate 56 is biased by the coil spring 58 and the slider plate 57 is biased by the coil spring 59. Move in the protruding directions, and the state shown in FIG.

When the energization of the solenoid 51 is stopped, the interlocking member 53 is lowered by the urging force of the coil spring 54, and the shaft 55 contacts the upper rear end of the slider plate 57 as shown in FIG. . As a result, the lock device returns to the normal state.

In the above-described automatic locking device, the plunger 52 is sucked into the solenoid 51 by energizing the solenoid 51 when the shutter is opened, and the plunger 52 is sucked by the interlocking plate 53a of the interlocking member 53.
The process is performed until it comes into contact with the receiving portion 50f of the main body 50.
When the interlocking plate 53a is in contact with the receiving portion 50f, the plunger 52 can keep a predetermined space with respect to a stopper (not shown) provided in the solenoid 51. Therefore, since the plunger 52 does not come into contact with the above-mentioned stopper, the plunger 5
There is no collision sound between 2 and the stopper, and the plunger 5
Even if there is residual magnetism in the stopper 2 and the stopper, both are not attracted, so that the plunger 52 continues to operate favorably.

Generally, this type of silencing type solenoid has a stopper in the solenoid, and a silencer is attached to the plunger side via an E-ring to prevent the plunger from coming into contact with the stopper when the plunger is sucked. The noise reduction rubber is configured to contact the outer wall of the solenoid so as to generate a predetermined space between the plunger and the stopper. Therefore, the automatic lock device shown in the above embodiment is a silence type solenoid that does not require members such as a silencer and an E-ring.

Next, another embodiment of the present invention will be described. The automatic lock devices shown in FIGS. 9 to 11 are each configured using one lock plate.

In the lock device shown in FIG. 9, the lock plate 63 is urged by the coil spring 62 to the protruding position as shown in FIG. 9A, and the tip of the locking lever 64 is further locked. The lock plate 63 is prevented from rotating clockwise by engaging with the engaging portion 63a.

When the lock bar 65 is lowered, the lock plate 63 pushed by the lock bar 65 rotates in the counterclockwise direction (in the direction of the solid line arrow).
Is rotated clockwise by the urging force of the coil spring 62 and returns to the normal state. As a result, the lock bar 65 becomes the lock plate 6
3 prevents the rise.

Next, when releasing the lock of the lock bar 65, the solenoid 66 is energized to raise the interlocking lever 68 connected to the plunger 67, and the locking lever 64 is moved as shown in FIG. 9B. Rotate. As a result, the lock plate 63 disengaged from the locking lever 64 is moved to the position shown in FIG.
It is possible to rotate clockwise from the position shown in FIG.

When the lock bar 65 starts to rise from the dotted line position shown in FIG. 9A, the lock plate 63 pushed by the lock bar 65 rotates clockwise as shown in FIG. 9B. To allow the lock bar 65 to rise. When the lock plate 63 is released from the pushing of the lock bar 65,
The normal state shown in FIG. 9A is restored by the urging force of the coil spring 62.

Thereafter, when the power supply to the solenoid 66 is stopped, the plunger 67 is lowered by the spring force, the locking lever 64 is rotated via the interlocking lever 68, and the leading end of the locking lever 64 is locked. -Engages with the engaging portion 63a of the gate 63.

The lock device shown in FIG. 10 urges the lock plate 70 to the projecting position by the coil spring 69 and urges the interlocking member 72 provided with the lock plate 70 by the compression spring 71 in the direction of the solid line arrow. Further, the interlocking member 72 is pushed against the compression spring 71 by an interlocking lever 74 connected to the plunger 73.

When the lock bar 75 descends and pushes the lock plate 70, the lock plate 70 moves rightward in the figure against the coil spring 69, and the lock bar 75 moves.
When the lock plate 70 further descends and separates from the lock plate 70, the lock plate 70 is again moved to the protruding position by the urging force of the coil spring 69, thereby preventing the lock bar 75 from rising.

To release the lock of the lock bar 75, the solenoid is energized to suck the plunger 73, and the interlocking lever 74 pushing the interlocking member 72 is raised to release the pushing force. Thereby, the interlocking member 72 moves in the direction of the solid line arrow by the urging force of the compression spring 71,
The lock plate 70 moves away from the moving path of the lock bar 75.

After the lock of the lock bar 75 is released and the lock bar 75 is raised and the energization of the solenoid is stopped, the plunger 73 is lowered and the interlocking member 72 is pushed by the interlocking lever 74 to the state shown in FIG. Return to

The lock device shown in FIG. 11 urges the lock plate 77 to the projecting position by the coil spring 76, and the upper edge of the interlocking member 79 is pressed by the compression spring 78 to the engaging portion 84 a of the case body 84. To come into contact with.

On the other hand, the plunger 80 is urged downward by a spring.
The shaft 81 provided at the end of the lock plate 77 is normally engaged with the upper edge of the interlocking member 79, and the lock plate 77 can slide from the projecting position to the retracted position.

The interlocking member 79 is provided with a long groove 79a, and a guide portion 82 is inserted into the long groove 79a so as to be movable in the vertical direction in the figure.

When the lock bar 83 descends and pushes the lock plate 77, the lock plate 77 moves rightward (retracted position) in the figure against the coil spring 76,
When the lock bar 83 is further lowered, the distal end of the lock bar 83 comes into contact with the engaging portion 79b of the interlocking member 79, and the interlocking member 79 is pushed by the lock bar 83 and the coil spring 7 is moved.
Descends against 8.

The lock bar 83 is connected to the lock plate 7.
By moving away from the lock plate 7, the lock plate 77 returns to the projecting position by the urging force of the coil spring 76.

The shaft 81 is moved by the movement of the lock plate 77 to the projecting position and the lowering operation of the interlocking member 79.
Moves from the interlocking member 79 to the lock plate 77,
As shown in the figure, it engages with the engaging portion 77a of the lock plate 77. This prevents the lock plate 77 from moving to the retracted position, and locks the lock bar 83 at the lock position.

When the lock of the lock bar 83 is released, the solenoid is energized to suck the plunger 80, and the shaft 81 engaged with the lock plate 77 is raised to release the engagement. From this, the lock plate 7
7 can be moved to the retracted position.
Is unlocked.

The raising of the lock bar 83 causes the interlocking member 7 to move.
9 is raised by the urging force of the spring 78 so that the upper edge thereof comes into contact with the engaging portion 84a of the case body 84.

When the energization of the solenoid is stopped,
The shaft 81 is engaged with the upper edge of the interlocking member 79 by the plunger 80 lowered by the spring force.

[0059]

As described above, the automatic locking device according to the present invention has a configuration in which the slider pushed by the lock bar slides on the case main body. This simplifies the process and makes it possible to reduce the size of the device, while reducing the production cost.

Further, since the slider is always present in the opening provided in the case body, the device is excellent in dustproof and waterproof properties.

Further, since the lock bar pushes the inclined portion formed at the tip of the slider, the collision noise when the lock bar comes into contact with the slider is small, and no noise is generated.

[Brief description of the drawings]

FIG. 1 is a front view of a lock device according to the present invention.

FIG. 2 is a rear view of the lock device of the present invention.

FIG. 3 is a left side view of the lock device of the present invention.

FIG. 4 is a plan view of the lock device of the present invention.

FIG. 5 is a partially enlarged rear view showing the inside of the locking device with the rear case body removed.

FIG. 6 is a partially enlarged cross-sectional view of the lock device as viewed from a right side surface.

FIG. 7 is a partially enlarged cross-sectional view of the lock device as viewed from a left side surface.

FIGS. 8A and 8B are explanatory diagrams of the operation of the lock device, in which FIG. 8A shows when the shutter is open, FIG. 8B shows when the shutter is closed, and FIGS. FIG.

FIG. 9 is a simplified view of a lock device showing another embodiment of the present invention.

FIG. 10 is a simplified view of a lock device showing another embodiment of the present invention.

FIG. 11 is a simplified view of a lock device showing another embodiment of the present invention.

[Explanation of symbols]

 50 Case main body 50c, 50d Guide hole 50e Opening 51 Solenoid 52 Plunger 53 Interlocking member 54 Coil spring 55 Shaft 56 Lock plate 56a, 56b Inclined portion 57 Slider plate 57a Inclined portion 58, 59 Coil spring 60 Lock bar

Claims (1)

[Claims] A shutter lock device provided on a guide rail for locking a shutter lock bar to maintain a shutter closed state, wherein the shutter lock device is slidably provided on a case body and has an inclined portion at a tip end. The inclined portion is constantly urged to the advanced position by a spring force so as to protrude from the opening of the case body, and the inclined portion is pressed against the lock bar as the lock bar fixed to the shutter moves to the lock position. A lock plate that slides from the advanced position to the retracted position, and is provided on the case body. When the lock bar moves over the inclined portion of the lock plate and moves to the locked position, the lock plate is retracted by the spring force. A lock mechanism for locking a lock plate sliding from a position to an extended position at the extended position and holding the lock bar at the locked position; and a lock mechanism provided on the case body, An automatic shutter lock device comprising a lock release mechanism for releasing a lock of a shutter.