JPH04277276A - Door locking device - Google Patents

Abstract

PURPOSE:To close a door when a current feeding is cut off by maintaining the lock in an unlocked condition when the door is closed, while locking the door by a spring and releasing the locking by an electromagnetic solenoid. CONSTITUTION:A crank plate 21 rotated by a manual handle is pivoted to a door 11, and provided with upward and downward locking rods 14 and 15 on it. Then, an arm 22 connected to an electro-magnetic solenoid 24 is installed, and the end of the plate 21 is engaged and locked to an aperture 23 by pressing with a coil spring 27. Then, arms 32 and 33 rotary-energized by springs are installed, and the rotation of the arm 32 is stopped by the arm 33 when the door is closed. And the solenoid 24 is excited by an ID card, and the plate 21 is removed from the aperture 23 to unlock the rods 14 and 15 and open the door. Furthermore, the current is cut off after a specific time, but the arm 33 is separated from the arm 32 when the door is opened, the arm 32 is rotated to prevent the clockwise rotation of the arm 22, and the engagement of the plate 21 end and the aperture 23 is prevented. Consequently, even though the current is cut off when the door is opened, the door can be closed by preventing the locking, and the safety can be secured.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door locking device, and more particularly to an improvement in a door locking device using a spring and unlocking the door using an electromagnetic solenoid.

0002

2. Description of the Related Art In a conventional device of this kind, when the door is closed, a spring causes the locking mechanism to bridge the door and the main body, locking the door to the main body, and when the door is opened, Provisions have been made in which an electromagnetic solenoid deactivates the locking mechanism to unlock the door.

For example, in the device described in Japanese Utility Model Application Publication No. 56-132262, the door is slidably attached to the main body, and the locking mechanism that connects the door to the main body is made of a member having the form of a rotatable arm. A spring and an electromagnetic solenoid are connected to this arm member. When the door is closed, the arm member is rotated by the spring, and the end of the arm member engages with the door to lock the door. In this state, when the electromagnetic solenoid is activated, the arm member is rotated by the spring. The arm member is rotated in the opposite direction against the spring to unlock the door.

0004

As is well known, when the temperature of an electromagnetic solenoid increases, its lifespan and suction force decrease, making it impossible to use it continuously. For this reason, in the above-mentioned locking device, the power supply to the electromagnetic solenoid is normally stopped after a certain period of time has passed after the door is opened. However, when the electromagnetic solenoid is de-energized, the spring rotates the arm member toward the door, and the arm member is pressed against the door and presses the door, making it impossible to close the door.

[0005] An object of the present invention is to enable the door to close even if the supply of current to the electromagnetic solenoid stops.
An object of the present invention is to provide an improved door locking device.

[0006]

[Means for solving the problem] This locking device includes a door and a main body to which the door is attached so that the door can be opened and closed, and when the door is closed, a spring bridges the door and the main body, When opening, an electromagnetic solenoid forces it into a non-crosslinked state.

In order to achieve the above object, the locking device of the present invention forcibly puts the locking mechanism into a non-crosslinking state when the door is opened, and when the door is closed, the locking mechanism is forced into the non-crosslinked state by the spring. It is provided with restraint means for bringing it into a crosslinked state.

[0008] A door is slidably attached to the main body,
The locking mechanism consists of a member that rotates between a position that bridges the door and the main body and a position that separates from the door. When the door is in the closed position, a spring rotates this rotating member to the former position and closes the door. If the electromagnetic solenoid is rotating the rotary member against a spring when opening, the restraining means may, for example, force the rotary member to rotate directly into the non-bridging position when the door is opened, and Sometimes it becomes separated from the rotating member,
It consists of a member that causes the rotating member to return to the bridge position by means of a spring.

[0009] Furthermore, the door is attached to the main body by a hinge,
The locking mechanism includes a rotatable first member, a second member sliding between a position bridging the door and the body and a position retracted into the interior of the door, and a locking mechanism configured to rotate the first member. a rotatable third member disposed between the first member and the second member for sliding the second member into the respective position; a rotatable fourth member that prevents rotation of the third member when the second member is slid into the latter position and allows rotation of the third member when the second member is slid to the latter position; a plunger for rotating the fourth member to the blocking position when the electromagnetic solenoid energizes the coil; a spring is incorporated in the electromagnetic solenoid for moving the plunger when the coil is not energized; When the fourth member is rotated to the position that allows the above-mentioned permission, the restraining means comes into contact with the fourth member when the door is opened, for example,
a member or members disengaged from the fourth member and causing the second member to slide into the former position by means of a spring when the second member is forced to rotate to the latter position and the door is closed; It is composed of the following members.

0010

[Operation] With the locking device of the present invention, when the door is opened,
The restraining means forcibly changes the locking mechanism from the bridged state to the non-bridged state and maintains this state while the door is open, so even if the supply of current to the electromagnetic solenoid is cut off, the door will remain open. Can be closed. Then, when the door is closed, the restraining means restrains the locking mechanism,
A spring forces the locking mechanism into a bridged state.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the locking device of the present invention will be described below with reference to the drawings.

[0012] This locking device is attached to an automatic teller machine (ATM) having a main body 10 and a door 11 that seals the main body 10, as shown in FIG. 7, for example.

The main body 10 has a box-like shape with an open back, and has a partition shelf 12 built into it. For example, a dispensing mechanism for bills and coins is housed in the space at the bottom of the shelf 12, and a bankbook printing mechanism is housed in the space at the top of the shelf 12. The door 11 is attached to the main body 10 by a hinge and can be rotated toward the main body 10 to seal the main body 10.

The locking mechanism according to the invention includes rods 14,1
Contains 5. These rods are integrated into the door 11, and by closing the door 11 and rotating the handle 16 on the outer surface of the door 11, a mechanism inside the unit 17 on the door moves the ends away from the upper edge of the door. Make it stick out, body 1
0 to lock the door 11 and the main body 10, and in this state, by reversing the handle 16, the door 11 and the main body 10 are pulled into the door.
The door 11 is unlocked and the door 11 can be opened.

The unit 17 is electrically connected to a card reader 19 on the outer surface of the door 11, and by inserting an ID card 20 into the card reader 19,
The electromagnetic solenoid inside the unit 17 is activated and moves a mechanical member built into the unit to free the rods 14 and 15, allowing the handle 16 to rotate, that is, the door 12 can be opened. I'm making sure I can do that.

FIGS. 1 and 2 show details of the internal mechanisms of the unit 17 with the door 11 closed.

The rods 14 and 15 are arranged vertically on the back side of the door 11 and are held by sliding bearings on the door 11. The handle 16 is disposed in front of the door 11 and is held by a bearing on the door 11. A rotary plate 21 is engaged with and fixed to a shaft of the handle 16 on the back side of the door 11. Rod 14, 1
5 is connected to this rotary plate by a pin. The rod and the rotary plate constitute a crank mechanism, and the rotation of the crank plate 21 causes the rods 14 and 15 to slide in the vertical direction, so that the upper ends of these rods (not shown) align with the upper edge and lower edge of the door 11. It protrudes from the edge and is adapted to fit into a hole in the body 10. The arm 22 is connected to the crank plate 21 when the door 11 is locked.
This is for preventing the rotation of the rods 14 and 15 and the lowering of the rods 14 and 15, and is arranged on the back side of the door 11 and rotatably held on a shaft on the door 11. The arm itself has two side walls arranged parallel to the door 11,
These side walls have end walls arranged so as to connect the side walls to the side edges and upper edges thereof far from the crank plate 21, and the end walls are provided with openings 23. An electromagnetic solenoid 2 is located near the lower end of the arm 22.
4 is arranged and fixed to the door 11. Arm 22
is connected to the movable shaft 25 of this electromagnetic solenoid 24 by a pin. The electromagnetic solenoid 24 has a known configuration, and when the coil 26 is energized, the movable shaft 25 is drawn into the inside of the coil 26, and when the energization is stopped, the movable shaft 25 is caused to protrude from the coil 26 by a coil spring 27. It has become. In the drawing, the solenoid 24 is de-energized, the movable shaft 25 is projected from the coil 26 by the coil spring 27, the arm 22 is rotated clockwise, and the opening 23 of the arm 22 and the protrusion of the crank plate 21 are connected. The figure shows a state in which the crank plate 21 is engaged and the rotation of the crank plate 21 is prevented.

Lock 28 and member 2 connected thereto
Numerals 9 to 31 are for preventing the arm 22 from rotating when the door 11 is locked. Lock 28 is door 1
It is attached to the front of 1. An arm 29 is engaged with and fixed to a shaft of the lock 28 that is rotated by a key. The arm 30 is rotatably attached to a shaft in the door 11, and its lower end is connected to the solenoid 10 in the arm 22.
rotation between a position in which it contacts a connecting pin with the movable shaft 25 and a position away from this pin. The upper end of this arm is connected by a pin to the free end of the arm 29 by a link 31, and in the state shown in the drawing in which the lock 28 is unlocked with a key, the arm 30 is rotated to a position away from the aforementioned pin. has been done.

[0019] This locking device further includes an arm 32.
and an arm 33. As clearly shown in FIG. 3, the arm 32 is thick and has a slope 34 formed on its side surface. This arm is rotatably attached to a shaft 35 on the door 11. A helical spring 36 is engaged with the shaft 35, with one end attached to the pin in the door 11 and the other end attached to the arm 32.
The arm 32 is rotated counterclockwise. However, the rotation of arm 32 is stopped by arm 33. The arm 33 has a substantially U-shaped cross section, and is attached to the frame 3 fixed to the door 11.
6 and is engaged with a pin 37 arranged perpendicularly to 6. A helical spring 38 is inserted into the pin 37, and
One end is brought into contact with the arm 33 and the other end is brought into contact with a pin on the door 11. Since the door 11 is closed as described above, the arm 32 contacts the end surface of the shelf 12 on the main body 10, is rotated against the spring 36 to a position parallel to the door 11, and the free end is rotated against the spring 36 to a position parallel to the door 11. contacts the slope 34 on the arm 33, and the arm
The rotation of the drum 33 is stopped. As a result, the protrusion on the lower edge of the arm 33 engages with the arm 22, and the arm 22
2 is prevented from rotating.

The operation of this locking device will be explained. Figure 1,
When the lock 28 is unlocked with the key in the state where the door 11 is closed as shown in FIGS. 2 and 4,
Arm 29 rotates clockwise, link 31 is pulled,
Arm 32 rotates clockwise and separates from arm 22. When the ID card 19 is inserted into the card reader 18 and current flows through the coil 25 of the electromagnetic solenoid 24, the movable shaft 26 is drawn into the coil 25, and as shown in FIG. The arm 22 is rotated counterclockwise, and the opening 23 of the arm 22 is removed from the protrusion of the crank plate 21. When the handle 16 is rotated, the rod 14 is lowered and the rod 15 is raised, causing the ends of the rods 14, 15 to be drawn into the door, out of the member 18 on the body 10, and removed from the door 11.
to allow it to be opened freely.

When the door 11 is opened, the arm 33 is rotated by the spring 37 toward the front side of the paper in FIG.
Move away from arm 32. Then, the arm 32 is rotated counterclockwise by the spring 36 as shown in FIG.
The protrusion of the arm 32 contacts the upper end of the arm 22, and the arm 22
In other words, arm 2 is prevented from rotating clockwise.
2 from engaging the crank plate 21.

When the door 11 is opened and a certain period of time has elapsed, the supply of current to the coil 26 of the electromagnetic solenoid 24 is stopped. Then, the movable shaft 26 protrudes from the coil 25 by the spring 27 and tries to rotate the arm 22 counterclockwise, but since the arm 32 prevents the arm 22 from rotating, the arm 22 is prevented from rotating. The ram 22 does not engage with the protrusion of the crank plate 21. Therefore, even if the handle 16 is accidentally rotated after the door 11 is opened, causing the rod 14 to rise and the rod 15 to fall, causing the ends of these rods to protrude from the upper and lower edges of the door, Crank plate 21 is arm 2
2, the rod 14 is lowered again and the rod 15 is raised, and the free ends of the rods 14, 15 are connected to the door 1.
It can be retracted into the upper and lower edges of door 1, that is, door 1
1 can be maintained in a state where it can be closed.

When maintenance and inspection work is finished and the door 11 is closed, the arm 33 contacts the shelf 12 of the main body 10 and is rotated against the spring 37 toward the back of the paper surface of the drawing.
It comes into contact with the slope of arm 32. The arm 32 is thereby rotated clockwise against the spring 36, and the arm 32 is rotated clockwise against the spring 36.
Stay away from 2. Therefore, the movable shaft 2 of the electromagnetic solenoid 24
6 protrudes from the coil 26 by a spring 27, and the arm 2
2 is rotated counterclockwise. In this state, when the handle 16 is reversed, the crank plate 21 is rotated counterclockwise, the protrusion of the crank plate 21 fits into the opening 23 of the arm 22, the rods 14 and 15 are prevented from sliding, and the door 11 is rotated counterclockwise. is locked. After this, when the key 30 is reversed and removed from the lock 28, the arm 29 is rotated counterclockwise, the link 31 rotates the arm 30 counterclockwise,
The lower end of the arm 30 contacts the connecting pin of the arm 22 with the electromagnetic solenoid 24, and the rotation of the arm 22 is stopped. Therefore, the supply of current to the coil 26 of the electromagnetic solenoid 24 is stopped, the movable shaft 26 is projected from the coil 26 by the spring, and the arm 22 is prevented from separating from the crank plate 21.

Furthermore, even if the power goes out while the door 11 is open, the door 11 can be similarly locked by closing the door 11 and rotating the lock 28 with the key. When the door 11 is closed, even if there is a power outage, the lock 28 can be turned with the key to open the door.
The arm 29 is rotated clockwise, the link 31 is pulled, and the arm 30 is rotated clockwise and separated from the arm 22 by rotating the handle 16 and sliding the rods 14, 15. Door 11 can be opened.

In the embodiment described above, the arm 33
Although the arm 33 is rotated by the shelf 11 on the main body 10, the arm 33 may be rotated by other parts of the main body 10, or the arm 33 may be rotated by a protrusion on the main body.
Changes and improvements can be made within the scope of the present invention, such as rotating the arm 33 and omitting the arm 33.

[0026]

[Effects of the Invention] According to the present invention, the door can be closed even if the supply of current to the electromagnetic solenoid is cut off when the door is opened. In devices where the door must be closed after loading the safe, etc.
Safety can be ensured.

[Brief explanation of the drawing]

FIG. 1 is a rear view showing an embodiment of a door locking device of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG. 1;

FIG. 3 is an enlarged plan view of a portion of FIG. 1;

FIG. 4 is an explanatory diagram showing an operating state.

FIG. 5 is an explanatory diagram showing another operating state.

FIG. 6 is an explanatory diagram showing still another state.

FIG. 7 is a perspective view showing an example of a casing incorporating this locking device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10...Main body, 11...Door, 14-16, 21, 22...Lock mechanism, 24...Electromagnetic solenoid, 27...Spring, 32, 3
3...Restraint means.

Claims (1)

[Claims] Claim 1: The door includes a door and a main body to which the door is attached so that it can be opened and closed; when the door is closed, a spring bridges the door and the main body; and when the door is opened, an electromagnetic solenoid is turned off. In a door locking device having a locking mechanism in a cross-linked state, when the door is opened, the locking mechanism is forced into a non-cross-linked state, and when the door is closed, the locking mechanism is freed, A door locking device comprising a restraining means for causing the spring to be in a bridged state.