JPH05295936A - Electric locking and unlocking device - Google Patents

Abstract

PURPOSE:To temporarily fix a door and a door frame detachably when the door is closed and a key is unlocked by forming a dead bolt for a drive key section and an interlock key section out of a magnetic body and, when the door is closed, engaging magnetically engaging protrusions by magnetic attractive force. CONSTITUTION:Dead bolts 3 and 11 are stored in housings 4 and 12 by coiled springs 5 and 13, respectively, to move a door 30 in closing direction. Next, with the door closed completely, the dead bolts 3 and 11 are pulled out from the housings 4 and 12 by each magnetic attractive force, respectively, to oppose the flat side faces of engaging protrusions 3a and 11a with each other. Then the engaging protrusions 3a and 11a are engaged with each other by magnetic force, and a separately provided locking and unlocking switch is pushed to pass electric current to a rotational drive device 6. Also the dead bolts 3 and 11 are rotated axially for locking and unlocking. In this case, the engaging protrusion 11a of the No.2 dead bolt 11 is engaged magnetically and mechanically with the engaging protrusion 3a of the No.1 dead bolt 3 to fix the door 30 completely to a door frame 31. When the door is opened, the locking and unlocking switch is pushed to rotate the dead bolts 3 and 11 axially.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric locking / unlocking device.

[0002]

2. Description of the Related Art FIG. 7 is a view showing a conventional example of an electric locking / unlocking device. In this specification, the "locked state" refers to a state in which the door cannot be opened manually, and the "unlocked state" refers to a state in which the door can be opened manually.

As shown in FIG. 7, a conventional electric locking / unlocking device 20 comprises a lock body 21 and a seat 22. As shown in FIG. 8, the seat 22 is attached to an edge surface 30a of a door 30. The lock body 21 is disposed and fixed, and the lock body 21 is disposed and fixed to the inner edge surface 31a of the door frame 31.

In FIG. 7, reference numeral 23 denotes a dead bolt, which is housed in a housing 24 so as to be movable back and forth in the axial direction. The dead bolt 23 is attached to the housing 24.
By energizing a solenoid (not shown) incorporated in the housing 24, the solenoid 24 moves forward and backward, and the tip of the housing 24 moves in and out. Further, the receiving seat 22 has a fitting insertion hole 26 for inserting and removing the tip end portion of the dead bolt 23.

When the door 30 is in a closed state and a separately provided locking / unlocking switch (not shown) is pressed to energize the solenoid of the lock body 21, the dead bolt 23 is driven and the tip portion thereof receives the lock. The seat 22 is fitted into the fitting hole 26. Thereby, the door 30 and the door frame 31 are
They are fixed to each other in the opening / closing direction of 0 and are in a locked state. When unlocking from that state, the locking / unlocking switch is pushed again to drive the dead bolt 23 in the opposite direction to the above, and the tip end thereof is withdrawn from the fitting insertion hole 26 of the receiving seat 22.

[0006]

However, in the electric locking / unlocking device 20 for locking / unlocking the dead bolt 23 by inserting / removing the dead bolt 23 into / from the fitting / inserting hole 26 of the receiving seat 22, for example, the door 30 is opened in the unlocked state. Since there is no function to attach and detach temporarily to the frame 31 (hereinafter referred to as "latch function"),
When it was used alone, the door 30 could easily be opened by a small external force such as wind when unlocking. Therefore, the cylinder lock 40 having a latch bolt has been used together in the past, but it is necessary to install the cylinder lock 40, which is expensive due to a complicated mechanism, on the door 30, which is very troublesome and costly. .. Also, there is an electric locking / unlocking device having the latch bolt and the dead bolt in the housing, but the internal mechanism is complicated and many parts are required, which is very expensive.

The present invention has been made in view of the above problems, and an object thereof is to provide a function (latch function) for detachably temporarily fixing the door and the door frame when the door is closed and unlocked. It is to provide an electric locking / unlocking device having the same.

[0008]

In order to solve the above-mentioned problems, the present invention provides a first deadbolt formed of a magnetic material and having an engaging projection at its tip, and a shaft of the first deadbolt. A drive lock portion having a rotation drive device that rotates angularly as a rotation shaft, and a second dead bolt formed of a magnetic material and having an engaging projection at its tip end are rotatable about an axis. An electric locking / unlocking device comprising an interlocking lock part provided in a state, wherein the drive lock part and the interlocking lock part are selectively disposed and fixed to a door and a door frame, and when the door is closed, The side surfaces of the engaging protrusions of the dead bolts face each other,
The engagement protrusion of the first deadbolt and the engagement protrusion of the second deadbolt are magnetically engaged with each other, and the rotation drive device angularly rotates the first deadbolt to switch between locked and unlocked states. At the same time, at the time of locking, the engaging projections of the dead bolts are mechanically engaged with each other.

[0009]

In the electric locking / unlocking device according to the present invention, the first dead bolt of the drive lock portion and the second dead bolt of the interlocking lock portion are made of magnetic materials, and the dead bolts attract each other to be magnetically engaged. After that, the first dead bolt is angularly rotated by the rotation drive device. Following this, the second dead bolt is also angularly rotated.

[0010]

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

1 to 3 are sectional views showing an embodiment of the present invention. 2 shows the unlocked state of the electric locking / unlocking device when the door 30 is open, FIG. 1 shows the unlocking state of the electric locking / unlocking device when the door 30 is closed, and FIG. 3 shows the locked state.

1 to 3, 2 is a driving lock portion, 10
Is an interlocking lock part, and the driving lock part 2 and the interlocking lock part 10 constitute the electric locking / unlocking device 1 of the present invention. In the embodiment of the present invention, the drive lock portion 2 has the inner edge surface 31 of the door frame 31.
The interlocking lock portion 10 is disposed and fixed to the edge a of the door 30.
Although it is arranged and fixed to a, the interlocking lock portion 10 is provided with a door frame 31.
The drive lock portion 2 may be fixed to the inner edge surface 31a of the door 30 and the drive lock portion 2 may be fixed to the edge surface 30a of the door 30. The door 30 is provided with a door stop 30a so that it can be opened and closed only on one side.

In the drive lock portion 2, 3 is a first dead bolt. As shown in FIG. 6, the first dead bolt 3 is a substantially columnar body made of a magnetic material having a magnetic force. An engaging projection 3a having a semicircular cross section is provided at the tip of the first dead bolt 3, and the other end is provided at the other end. Is provided with a flange portion 3b. Further, as shown in FIG. 4, a shaft insertion hole 3d having a hooking groove 3c in the axial direction of the first deadbolt 3 is formed in the center of the surface of the other end.
Is provided. As shown in FIGS. 1 to 3, the first dead bolt 3 is housed in a drive lock housing 4 in a state of being rotatable about its axis and retractable in its axial direction. A coil spring 5 is loosely fitted to the first dead bolt 3,
Both ends of the coil spring 5 are mounted between the flange portion 3b of the first dead bolt 3 and the projecting portion 4a in the drive lock housing 4, and the first dead bolt 3 is driven by the drive lock housing. 4 It is urged in the direction of moving inward. Further, in the unlocked state shown in FIGS. 1 and 2, the first dead bolt 3 has the flat side surface portion 3e (FIG. 6) of the engaging protrusion 3a.
(See) is facing the direction in which the door 30 opens.

Reference numeral 6 is a rotary drive device. The rotary drive device 6 rotates the rotary shaft 6a 90-90 times in one rotation.
It is a device that electrically rotates at an angle of 180 degrees.
The rotary drive device 6 is preferably constructed by connecting the rotary shaft 6a to the shaft of a rotary angle control motor capable of controlling the rotary angle, but as shown in FIG. The rotary shaft 6a may be connected to the rotary shaft. A shaft stopper 6b is provided on the rotary shaft 6a so as to project in the axial direction (see FIG. 4), and the shaft stopper 6b is formed in the shaft insertion hole 3d of the first dead bolt 3. The rotation shaft 6 is fitted so as to fit in the hook groove 3c.
a is removably inserted in the shaft insertion hole 3d of the first dead bolt 3.

Also, in the interlocking lock portion 10, 11 is a second dead bolt. As shown in FIG. 6, the second deadbolt 11 is a substantially columnar body made of a magnetic material having a polarity different from that of the first deadbolt 3, and has an engaging projection 11a having a semicircular cross section at its tip. And a flange 11b is provided at the other end. The second dead bolt 11 is housed in the interlocking lock housing 12 in a state in which the second dead bolt 11 is rotatable about the axis and is movable back and forth in the axial direction. A coil spring 13 is mounted between the flange portion 11b of the second dead bolt 11 and the projecting portion 12a in the interlock lock housing 12, and the coil spring 13 is the second dead bolt. It is loosely fitted to the bolt 11. Further, in the unlocked state shown in FIGS. 1 and 2, the second dead bolt 11 has the flat side surface 11c (see FIG. 6) of the engaging projection 11a of the door 30.
Is facing the direction of closing.

Next, the operation of the electric locking / unlocking device in the embodiment of the present invention will be described. In the state of FIG. 2, the first
The dead bolt 3 and the second dead bolt 11 are completely housed in the housings 4 and 12 by the coil springs 5 and 13, respectively. When the door 30 is moved in the closing direction from this state, the first dead bolt 3 and the second dead bolt 11 are moved to their respective housings due to mutual magnetic attraction at the moment when the door 30 is completely closed. 4,1
2, the engaging projections 3a and 11a are magnetically engaged with each other so that the flat side surfaces 3e and 11c of the engaging projections 3a and 11a face each other, and the state shown in FIG. 1 is obtained. ..

In the state of FIG. 1, the door 30 can be opened against the magnetic forces of the dead bolts 3 and 11, but the drive lock portion 3 is pushed by pressing a lock / unlock switch (not shown) provided separately. When the rotary drive device 6 is energized, the rotary shaft 6a
To follow the first dead bolt 3 and the second dead bolt 1
1 rotates axially at an angle of 180 degrees and enters a locked state as shown in FIG. In this state, the engagement protrusion 11a of the second dead bolt 11 is magnetically and mechanically engaged with the engagement protrusion 3a of the first dead bolt 3, so that the door 30
The door 30 cannot be opened, and the door 30 is completely fixed to the door frame 31.

When the rotation drive device 6 is composed of the rotation angle control motor, it can rotate the rotation shaft 6a by 180 degrees, but when it is composed of the rotary solenoid, the rotation shaft 6a can be rotated. Since 6a is rotated in an angular range of a little more than 90 degrees at maximum, in that case, the flat side surface portion 3e of the engaging protrusions 3a, 11a of the first dead bolt 3 and the second dead bolt 11 are locked at the time of locking. 11c each has a door 3
It should be oriented at an angle of about 45 degrees with respect to the opening and closing direction of 0.

When the door 30 is opened from the locked state shown in FIG.
The locking / unlocking switch is pushed again to pivot the first dead bolt 3 and the second dead bolt 11 again at an angle of 180 degrees to bring them into the state shown in FIG. In this state,
The door 30 can be opened against the magnetic force of the dead bolts 3 and 11. When the door 30 is opened from this state, the dead bolts 3 and 11 are housed in the housings 4 and 12 by the restoring force of the coil springs 5 and 13 attached to the dead bolts 3 and 11, as shown in FIG. Although the state shown in FIG. 1 is the unlocked state, the door 30 and the door frame 31 are detachably temporarily fixed to each other by the magnetic attractive force of the dead bolts 3 and 11, so that a small external force such as wind may be applied. The door 30 does not open easily.

Further, in the electric locking / unlocking device 20 of the conventional example, a large amount of electric power was required to drive the dead bolt 23 forward / backward in the locking / unlocking operation, but in the electric locking / unlocking device 1 of this embodiment. , Each dead bolt 3, 1
No direct power is used to drive 1 back and forth,
Instead, since the electric power is required to rotate the shafts of the dead bolts 3 and 11, the power consumption required for the locking / unlocking operation can be reduced.

Further, the respective dead bolts 3 and 11 are not moved back and forth, but the positions of the respective tip end portions are fixed to the positions at which the respective tip end portions can be engaged so that only the axial rotation is possible. May be.

In the above embodiment, when an open / close detection sensor (not shown) for detecting the open / closed state of the door 30 is made to interlock with the electric locking / unlocking device 1 of the present embodiment, that is,
After the door 30 is completely closed, when the rotary drive device 6 of the drive lock unit 2 is energized to be in the locked state,
Since the door 30 is locked every time a person goes in and out, the electric locking / unlocking device 1 is very excellent in terms of crime prevention without accidentally forgetting to lock.
Can be done. Of course, the opening / closing detection sensor may be incorporated in the electric locking / unlocking device 1. In this case, the power supply to the rotary drive device 6 may be delayed by a certain time from the moment the door 30 is closed by a timer or the like.

[0023]

As described above, the electric locking / unlocking device according to the present invention has the first dead bolt formed of a magnetic material and having the engaging projection at the tip thereof, and the first dead bolt rotating about its shaft. A state in which a drive lock portion having a rotary drive device for angularly rotating as a moving shaft, and a second dead bolt formed of a magnetic material and having an engaging projection portion at its tip end portion can be pivotally rotated. An electric locking / unlocking device comprising an interlocking lock part having a drive lock part and an interlocking lock part selectively attached to and fixed to a door and a door frame. The rotation driving device is configured such that the engagement protrusions of the first dead bolt and the engagement protrusions of the second dead bolt are magnetically engaged with each other so that the side surfaces of the engagement protrusions of the bolt face each other. By turning the first deadbolt angularly to switch the locked / unlocked state and In the above, since the engaging projections of the dead bolts are mechanically engaged with each other, the door and the door frame are detachably temporarily fixed when unlocked, Even if a cylinder lock or a separate latch bolt is not used as in the past, even if it is used alone, the door will not easily open even with a small external force such as wind when closing and unlocking the door. .. Further, since each of the dead bolts also has the latch function at the same time, it is not necessary to provide a separate latch bolt, and an electric locking / unlocking device having a latch function can be realized with an extremely simple structure.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing an embodiment of the present invention.

FIG. 3 is a sectional view showing an embodiment of the present invention.

FIG. 4 is a diagram showing a main part of an embodiment of the present invention.

FIG. 5 is a diagram showing a main part of an embodiment of the present invention.

FIG. 6 is a diagram showing a main part of an embodiment of the present invention.

FIG. 7 is a diagram showing a conventional example.

FIG. 8 is a diagram showing a state of arrangement on a door and a door frame of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric locking / unlocking device 2 Drive lock part 3 1st dead bolt 3a Engagement protrusion 6 Rotation drive device 10 Interlocking lock part 11 2nd dead bolt 11a Engagement protrusion

Claims (1)

[Claims] 1. A first dead bolt formed of a magnetic material and having an engaging projection at its tip, and a rotary drive device for angularly rotating the first dead bolt with its shaft as a rotary shaft. Electric locking / unlocking comprising a driving lock part having the same, and a interlocking lock part having a second dead bolt formed of a magnetic material and having an engaging projection at its tip end in a state in which the shaft is rotatable. In the locking device, the drive lock portion and the interlocking lock portion are selectively disposed and fixed to a door and a door frame, and when the door is closed, the side surfaces of the engaging protrusions of the dead bolts face each other. As described above, the engagement protrusion of the first dead bolt and the engagement protrusion of the second dead bolt are magnetically engaged with each other, and the rotation drive device angularly rotates the first dead bolt to lock and unlock. While switching the state, when locking it, the engaging protrusions of the dead bolts Electric unlocking apparatus which people are characterized by mechanical engagement with one another.