JP2715376B2 - Automatic locking device to prevent wandering - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for automatically locking a door when a person approaches, especially in a facility where a person with a wandering habit resides, for example, in a nursing home with a demented elderly, etc. The present invention relates to an automatic door locking device for preventing unauthorized access to a door.

[0002]

2. Description of the Related Art Heretofore, in a facility such as a nursing home, if there are elderly people with dementia who have a wandering habit, these persons may go out of the facility without permission and become involved in an accident.

[0003] Therefore, in a facility where there is a person who may wander, all the entrances and exits of the building that lead to the outside of the building are locked all day, so that residents and other persons in the facility other than the person who has a habit of wandering can be locked. Employees were required to have a duplicate key and take measures such as unlocking and locking the doors themselves to enter and leave the facility.

[0004] However, the reason why all the doors leading to the outside of the facility are locked all day is that all residents and staff members of the facility other than those who have a tendency to wander always carry the keys to the facility. There is a problem that it is necessary to unlock and lock the door key which is extremely troublesome every time the person enters and exits.

[0005] Further, if any one person forgets to lock the key, it is impossible to completely prevent a person who has a wandering habit without going out without permission.

[0006] Instead of having a key for each person, a method of installing surveillance cameras in all doors and automatically opening and closing all doors from a management room can be considered. And the cost of these facilities also increases.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic door locking apparatus at a low cost which can prevent a person having a wandering habit outside a facility without permission with a simple apparatus.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a driving device for a locking piece for locking a door, a control device for operating the driving device, and a control device installed near the door. When a person carrying a magnet and having a wandering habit approaches the door, the control device detects a weak current flowing through the coil due to the approach of the magnet and locks the drive device. And an automatic locking device for preventing wandering, which prevents the person from passing through the door.

Further, instead of the magnet and the coil, a radio wave transmitting device and a radio wave receiving device are provided near the door, and the radio wave transmitting device always transmits a radio wave. With the resonating coil carried, when the person approaches the door, the radio wave receiving device receives the radio wave emitted when the coil receives the radio wave from the radio wave transmitting device and resonates, and receives the received signal. An automatic locking device for preventing wandering, which is sent to a control device, receives the received signal, locks the door by locking the driving device to lock the door, and prevents the person from passing through the door.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a first embodiment of the present invention,
A drive device for driving the locking piece is provided on the door leading to the outside of the facility, and a sensor with a built-in coil is provided near the door. If a weak current flows in the coil, appropriate means is provided via the control device. To lock the drive device.

In a normal state of the door, the key of the locking device is unlocked so that a person can open and close the door to freely enter and exit the facility and the outdoors.

On the other hand, a person with a wandering habit that may cause an accident outside the facility, for example, a demented elderly person in a nursing home, always carries a magnet piece in advance. As a means for carrying the magnet piece, there is a method of hanging the bag containing the magnet piece from the neck as a protective bag.

Here, when the person carrying the magnet and having the wandering habit approaches the door, the magnet piece hung from the neck approaches the coil provided near the door, and the coil generates a weak current due to electromagnetic induction. When the control circuit senses the weak current and locks and drives the locking piece driving device, the key is automatically locked and a person with a wandering habit escapes out of the facility through the door and wanders around the facility. Is prevented.

Further, in the second embodiment of the present invention, a driving device for a locking piece is provided in the door, and a radio wave transmitting device and a radio wave receiving device are provided near the door. Transmit radio waves.

On the other hand, a person who has a wandering habit always carries a coil that resonates with a radio wave from a radio wave transmitting device in place of the magnet used in the first embodiment.

When the person carrying the coil approaches the door, the coil hung from the neck resonates with the radio wave from the radio wave transmitting device provided near the door and reflects the radio wave of the resonance frequency. Receives this reflected radio wave, sends a received signal to the control device, activates the locking piece driving device by appropriate means according to this signal, and automatically locks the key, so that the facility of a person with a wandering habit Escape wandering out is prevented.

The door using the automatic locking device of the first and second embodiments is normally in an unlocked state, and the staff and the like can freely enter and leave the door without carrying the key. For a locked door when a person approaches the door,
Unlocking work with a key is required. However, it is no longer necessary to lock the door leading to the outside of the facility for persons who do not know when and when to wander, so that the inconvenience when other people enter and leave under normal conditions is eliminated.

[0018]

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

(Embodiment 1) FIG. 1 (A) shows an automatic locking device according to the present invention applied to a pivoting door, wherein 1 is a pivoting door and 2 is a door frame. Is a driving device of the locking piece provided on the door frame, 4 is a control device thereof, 5 is a sensor provided near the door frame, and has a coil built therein.

FIG. 1B is a perspective view of the vicinity of the driving device 3, in which a dead bolt 8 is provided as a locking piece inside the driving device 3.
The dead bolt 8 is retracted in the normal state, and the door 1 is in the unlocked state and can be freely opened and closed.
When a current flows from the power supply 6 to the motor 9, the dead bolt 8 protrudes and moves toward the door 1 due to the rotation of the motor 9 and is inserted into the recess 10 of the door 1 to perform locking.

The installation place of the driving device 3 is not particularly limited, and it can be provided at the door knob 7 on the door 1 side. However, since the locking mechanism of the door knob 7 from the beginning becomes complicated, when it is retrofitted, As in the case of the first embodiment, it is easier to provide the door frame 2 at an appropriate portion.

FIG. 2 is a circuit diagram for supplying a current I for operating the motor 9. The control device 4 detects a weak current i from the detector 5 having the coil 12 therein,
The current I supplied from is supplied.

The staff and residents other than the wandering person
The door 1 can be opened and closed by using the door knob 7 installed on the door 1 from the beginning, and the door 1 can be freely entered and exited. However,
It is well known that the door 1 is always closed instead of being opened.

Here, as shown in FIG. 2, when the wandering elderly man carrying the magnet piece 11 approaches the sensor 5 near the door 1, a weak current i flows through the built-in coil 12 due to electromagnetic induction. The control device 4 causes the motor 9 to supply the current I from the power supply 6 with the current i, and the door 1 is locked.

The door 1 in the locked state by the operation of the driving device 3 prevents the wandering elderly from going out, but in this state, it obstructs the passage of other people, so the control device 4 locks the door. A signal for notifying the operation is sent to the management room, and the locking operation is notified to the management by a lamp or the like for notifying the operation state, so that the management can open the door in the operation state.

At the time of unlocking of this device, the manager uses the dedicated key to control the control device 4 from the control power supply 6 to the motor 9 to supply a current in the opposite direction to that at the time of locking, so that the motor 9 is activated. The door 1 is unlocked by reversing the rotation and retreating the dead bolt 8.

The automatic locking device of the present invention is intended to automate only the locking operation, and after the automatic locking, goes to the door operated by the manager and unlocks it with the key for the locking device. With simple wiring, it is also possible to remotely control the unlocking operation from the management room.

(Embodiment 2) Next, an embodiment in which the automatic locking device of the present invention is applied to a sliding door will be described.
Components to which the same components can be applied, such as the control circuit 4 and the like, will be described with the same reference numerals.

As shown in FIG. 3A, reference numeral 13 denotes a sliding opening / closing type sliding door, and a driving device 15 of the present invention is provided in a door frame 14 portion. Other arrangements of the control device 4, the sensor 5, and the power supply 6 are almost the same as those in the first embodiment.

As shown in FIG. 3 (B), the locking piece inside the driving device 15 is a rotatable sickle lock 16, which is rotated toward the opening door 13 by driving the motor 9, and
To stop the movement of the hinged door 13.

When the wandering old man approaches the hinged door 13, as in the case shown in FIG.
Supplies the electric power I from the power supply 6 to the motor 9, the sickle lock 16 enters the recess 17 of the hinged door 13 and is locked, thereby preventing the wandering elderly person from going out without permission.

(Embodiment 3) FIG. 4 shows a case where the second embodiment of the present invention using a radio wave transmitting device and a radio wave receiving device is applied to a door 1 of a rotary opening and closing system. 1
The same parts as those described above are denoted by the same reference numerals and described.

A radio wave transmitting device 19 and a radio wave receiving device 20 are installed near the door 1, and an old man who has a wandering habit is provided with a talisman containing a portable coil.

As shown in FIG. 5, radio waves are always transmitted from the radio wave transmitting device 19, and the elderly person who has a wandering habit
When the person approaches, the coil 21 carried by the person resonates with the radio wave transmitted from the radio wave transmitting device 19,
This resonance generates a radio wave of a resonance frequency.

The radio wave is received by the radio wave receiving device 20 and a reception signal is sent to the control device 21 so that the person's door 1
The control device 21 senses the approach of the door, and the motor 9 of the locking piece driving device 3 is operated to lock the door 1 to prevent a person with a wandering habit from escaping from the facility. Become.

The radio wave transmitting device 18 and the receiving device 1
The third embodiment using the ninth embodiment is not limited to the pivoting door 1 used in the first embodiment, but may be applied to the sliding door 13 used in the second embodiment. .

In the first to third embodiments, the rotation of the motor 9 is used for driving the locking piece. However, the present invention is not limited to this as long as the means for operating the locking piece is used. The unlocking operation is not limited to the reverse rotation of the motor 9, and the locking piece may be moved backward by a mechanical action.

[0038]

As described above, according to the present invention, the door is automatically locked by detecting the approach of a person carrying a magnet piece or a coil. Even without monitoring the door, it is possible to prevent these persons from escaping out of the facility, and to prevent accidents caused by wandering outdoors.

In addition, a staff member and a resident other than a person who has a wandering habit can open and close a door using this device as well as a normal door, and can freely enter and leave.

Furthermore, the existing door can be installed with only minor modifications, and there is no need to use a complicated and large-scale device, which is advantageous in terms of cost.

[Brief description of the drawings]

FIG. 1A is a schematic view showing an embodiment of the present invention,
(B) is an enlarged perspective view near the driving device.

FIG. 2 is a circuit diagram of the locking device.

FIG. 3A is a schematic diagram showing another embodiment of the present invention, and FIG. 3B is an enlarged perspective view of the vicinity of the driving device.

FIG. 4 is a schematic view showing another embodiment of the present invention.

FIG. 5 is a circuit diagram of a locking device according to another embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 door 2 door frame 3, 15 drive device 4, 20 control device 5 sensor 6 power supply 7 door knob 8 deadbolt 9 motor 10, 17 concave portion 11 magnet piece 12 coil 13 sliding door 14 doorframe 16 sickle lock 18 radio wave transmission device 19 Radio wave receiving device 21 Portable coil

Claims (2)

(57) [Claims] 1. A driving device for a locking piece for locking a door, a control device for operating the driving device, and a coil installed near the door and connected to the control device, wherein a person carrying a magnet carries the door. When approaching, the control device detects a weak current flowing through the coil due to the approach of the magnet, locks the drive device and locks the door, thereby preventing the person from passing through the door. apparatus. 2. A driving device for a locking piece for locking a door, a control device for operating the driving device, a radio wave transmitting device installed near the door, and a radio wave receiving device also installed near the door. A radio wave is transmitted from the radio wave transmitting device, and when the person carrying the coil approaches the door, the radio wave receiving device receives the radio wave emitted when the coil receives this radio wave and resonates, and the received signal is received by the control device. An automatic locking device for preventing wandering, which locks the door by causing the control device to lock the driving device, thereby preventing the person from passing through the door.