JP2823459B2 - Electric lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric lock device for locking and unlocking a lock by the operation of an electromagnetic solenoid, and more particularly to a device for driving and controlling a plurality of electric lock devices.

[0002]

2. Description of the Related Art As an operation method of an electromagnetic solenoid in an electric lock, a lock is maintained in an unlocked state while one electromagnetic solenoid is energized, and automatically unlocked when energization is stopped. The drive control device and, while energizing one electromagnetic solenoid, keep the lock in a locked state,
A lock-on type drive control device that automatically unlocks when power is stopped and a lock mechanism is operated via a latch mechanism that alternately performs lock operation and unlock operation on one electromagnetic solenoid. Each time a pulse signal is sent to the electromagnetic solenoid, a locked state (a state in which the bar is protruded and fixed) and an unlocked state (the protruding bar can be retracted by turning the knob of the door). An instantaneous energization that has a drive control device of the locking / unlocking type that changes state alternately, an electromagnetic solenoid for locking and an electromagnetic solenoid for unlocking, and executes each operation each time a pulse signal is applied to each electromagnetic solenoid. There are drive control devices of a locking / unlocking type 2 solenoid type and the like. Usually, one of these drive control devices is arranged for each lock.

[0003]

In the above-described drive control device of the unlocked-on-power-on type and the lock-on-power-on-type, the power supply to the electromagnetic solenoid must be maintained while the unlocked or locked state is maintained. There is a problem that electric power consumption increases. In addition, the instantaneous energization locking / unlocking type 2 solenoid type requires two electromagnetic solenoids, and thus has a problem that the drive control device for the lock is bulky.

On the other hand, an instantaneously energized locking / unlocking type drive control device has a small amount of electricity consumption and has a single electromagnetic solenoid, so it is compact, and can be installed adjacent to a lock such as a door. preferable. However, since there is only one central control device for controlling one entry management device or the like, that is, a command signal for locking / unlocking, and thereby performing locking / unlocking of a plurality of locks, the lock location When the drive control device provided for each operation is operated, the instantaneous energization locking / unlocking type drive control device, as described above, switches between the locked state and the unlocked state each time a pulse signal is sent to the relay that operates the electromagnetic solenoid. Since a specific operation of alternately changing the state is performed, there are the following inconveniences.

[0005] For example, as shown in FIG.
Drive control device 100 installed at every 06 locations (however, FIG. 5
Only one is connected to the power supply 101, one electromagnetic solenoid 102 and the locking / unlocking relay 103 are connected as shown in FIG. When the first command pulse signal P is issued to instruct locking from the device 105, in all the drive control devices 100, the switch 103a related to the relay 103 is closed for a certain period of time, and the electromagnetic solenoid 102 is turned off for a predetermined time. The lock is operated only for a time, and a bar (not shown) in each lock 106 is rotated in the locking direction. Next, in order to issue an unlock command from the central control unit 105, the second
When the second command pulse signal P is issued, in all the drive control devices 100, the switch unit 1
03a is closed for a predetermined time, and the electromagnetic solenoid 102 is closed.
It is assumed that the lock 106 is operated for a predetermined time to operate the bar in the unlocking direction. Reference numeral 104 denotes a sensor (micro switch) for detecting the movement of a bar (not shown) of the lock 106. The sensor 104 is a detection signal of an actual lock state, which is related to the movement of the latch mechanism.
An unlocked state detection signal is sent to the central controller 105, where the locked / unlocked state can be recognized (sensed).

[0006] Then, the central control unit 105 issues a command pulse signal P for locking, and the relays 103 for operating the electromagnetic solenoids 102 in all the drive control units 100 for a certain period of time operate for a certain period of time. The 106 bars move in the locking direction. However, the bar of the other lock is completely locked, but the bar in one lock is not completely locked due to the engagement of the mating part of the mating member, or only the electromagnetic solenoid in one lock is electrostatic. If it does not operate due to the influence of the above, the latch mechanism at that location does not move, the state is recognized by the central control device 105 by the signal of the sensor 104, and the operator again unlocks,
When a locking command is input by the central control device 105,
Each time the command pulse signal P is output, the other lock 10
In the latch mechanism in the drive control device 100 for the lock 6, the lock is changed from the unlocked state to the unlocked state. On the other hand, in the latch mechanism where the locking is incomplete, the other lock state is changed from the unlocked to the locked state. Therefore, there is a problem that all locks cannot be brought into the same locked state or unlocked state even if the locking / unlocking command is repeated several times.

The lock / unlock command signals are output in parallel from one central control device to the drive control devices in all locks, and the state signals are also input to the central control device in parallel. According to the circuit configuration, when the number of the above-mentioned instantaneously energizing / unlocking type drive control devices increases, the number of lines for circuit connection becomes enormous and the input / output contacts in the central control device are the number of drive control devices (locks). In addition, there is a problem that the control program in the central control unit becomes complicated, the memory capacity increases, and the cost increases.

The present invention solves these problems, reduces the number of command signal systems from one central control unit, reliably prevents malfunction of the drive control unit of each lock, and provides a safe and inexpensive electric lock. It is intended to provide a system.

[0009]

In order to achieve the above object, an electric lock device according to the present invention comprises one central control device and one electric lock device.
A plurality of drive control devices provided for each lock are connected by a common command signal line, and each drive control device is provided with a pulse signal for locking / unlocking command from the central control device. The relay is configured to drive the bar of each lock in a locking direction and an unlocking direction via an electromagnetic solenoid by operating the relay for an appropriate time, and in each of the drive control devices, a switch unit of a locking relay; The switch section of the unlocking relay is connected in parallel to the electromagnetic solenoid, and a switching mechanism associated with a sensor for detecting the locking / unlocking state of the bar is connected in series to each of the switch sections. It is characterized by.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described. FIG. 1 shows that a plurality of rooms 2 are provided along a corridor 1 of a building, and a door 3 of each room 2 has a lock of an electric lock described later. FIG. 2 is a diagram including a lock controller 4 and a drive control device 5, and one central control device 6 as a room entry management device arranged at a position separated from the lock 4 and the drive control device 5.

FIG. 2 is a component layout diagram of the lock 4 in each door 3 and a main part of the drive control device 5. The bar 7 in the lock 4 is fitted to a fitting portion 8 provided on the front pillar or the like of the chamber 2. The electromagnetic solenoid 9 is provided on the door 3 so as to be movable in and out.
Is operated so that the bar 7 moves out and back (moves forward and backward) to and from the fitting portion 8 via an intermittent operation type latch mechanism 10 (not shown in detail). When the operating body 11 moves in the direction of the arrow A (locking direction) and the bar 7 is locked, the locked state is changed to a first sensor 12 such as a photo-interrupter formed of a pair of a light emitting diode D1 and a phototransistor Tr1 described later. Detect with. Further, when the operating body 11 moves in the direction of arrow B (unlocking direction) and the bar 7 is unlocked, the unlocked state is changed to a photo-interrupter or the like composed of a pair of the light emitting diode D2 and the phototransistor Tr2. The second sensor 13 is configured to detect.

Each drive control device 5 of the present invention has a circuit configuration as shown in FIG. 4, and is connected by a common command signal line 14 from the central control device 6 as shown in FIG.
Are input from the first sensor 12 and the second sensor 13 to the central controller 6. Central control device 6
Then, the input of the locking and unlocking commands is performed by a key input operation such as a card reader or a numeric keypad (not shown). The power supply 16 may be installed at each drive control device 5, or may be led from another location, for example, from the central control device 6.

When a command pulse signal P1 for locking is issued from one central control unit 6, the command input unit 17 is turned on in all the drive control units 5, and the switch unit 18a associated with the locking relay 18 is turned on. When the command pulse signal P2 for instructing the unlocking is issued from the central control device 6, the switch section 19 is turned on in all the drive control devices 5, and the switches related to the unlocking relay 20 are turned on. The switch unit 18a and the switch unit 20a are connected to the electromagnetic solenoid 9 in parallel so as to close the unit 20a.

The switch units 18a and 20a
In addition, a switching mechanism that operates based on signals from the first sensor 12 and the second sensor 13 for detecting the movement of the bar 7 of the lock is connected. That is, the collector of the transistor Tr3 is connected to the switch section 18a, and the emitter is connected to the minus side of the power supply 16. Similarly, the transistor Tr4 is connected to the switch section 20a, and the emitter is connected to the minus side of the power supply 16. The base of the transistor Tr3 is connected to the collector of the phototransistor Tr1 of the first sensor 12, and the base of the transistor Tr4 is connected to the collector of the phototransistor Tr2 of the second sensor 13. The changeover switch section for the light emitting diodes D1 and D2 in FIG. 4 functionally shows the operation of the first sensor 12 and the second sensor 13.

With this configuration, the operation of executing locking from the lock 4 in the unlocked state (the state in which the bar 7 is retracted in the direction of arrow A in FIG. 2) will be described. First, the locking command pulse signal P1 (one pulse) is sent from the central control unit 6 to the command input unit 17.
When entering, the locking relay 18 is turned on, the switch 18a is closed, the line X1 becomes conductive, the electromagnetic solenoid 9 starts operating, and the bar 7 is moved in the direction of arrow B.

As a result, the changeover switch for the light emitting diodes D1 and D2 is switched, the first sensor 12 transistor Tr1 is operated, and the transistor Tr3 is turned on.
Hold in FF. Therefore, even if the switch 18a of the locking side relay 18 is ON, the X1 line is cut off, the excitation of the electromagnetic solenoid 9 ends, and the locking operation is completed. In this manner, the electromagnetic solenoids 9 of all the drive control devices 5 are actuated for an appropriate time by the locking command pulse signal P1 from one central control device 6, and the bar 7 is driven in the locking direction.

However, the bar 7 associated with any one of the plurality of drive control devices 5 is shown in FIG.
When the operation to move in the direction of arrow B is incomplete or the electromagnetic solenoid 9 does not operate due to the influence of static electricity or the like, the transistor Tr3 of the first sensor 12 in the drive control device 5 remains ON. Become. Further, a signal (unlockable) from the first sensor 12 related thereto can be recognized by the central control device 6. On the other hand, in the drive control device 5 in which the movement of the bar 7 in the locking direction is completed, even if an input signal is input to the command input unit 17 after completion of the locking operation, the transistor Tr3 is kept in the OFF state. The electromagnetic solenoid 9 in the drive control device 5 is not driven. In addition, the central control device 6 can recognize the completion of the locking by the signal from the first control 12 related thereto.

Therefore, when the worker issues a command pulse signal P1 for locking again at the central control device 6, the operator again drives only the electromagnetic solenoid 9 of the drive control device 5 for which the locking could not be completed. The same operation as above is repeated, but the electromagnetic solenoid 9 does not operate at the place where the locking operation is completed, and therefore, there is no malfunction that a plurality of locks operate in a gap.

In the unlocking operation, when the command pulse signal P2 is input to the unlocking command input unit 19, the unlocking relay 20 is turned on, and the switch unit 20a is turned on.
Is closed, the line X2 becomes conductive, the electromagnetic solenoid 9 starts operating, and the bar 7 is moved in the direction of arrow A. When the unlocking operation is completed, the transistor Tr4 as a switching mechanism is turned off by the operation of the second sensor 13.
The subsequent operation is substantially the same as the locking operation, and a detailed description thereof will be omitted.

[0020]

As described above, according to the present invention, one central control device and a plurality of drive control devices provided for each lock are connected by a common command signal line. Each time a pulse signal for locking / unlocking is issued from the central control device, the bar rod of each lock is locked via an electromagnetic solenoid by operating a relay provided in each drive control device for an appropriate time. Each drive control device has a switch section of a locking relay and a switch section of an unlocking relay connected in parallel to an electromagnetic solenoid. A switching mechanism associated with a sensor for detecting the locked / unlocked state of the switch unit is connected in series to each of the switch units, and a common command signal is transmitted from one central control device via a common command signal line. For multiple drive controllers Only that it is possible to operate the 閂杆 padlock which is associated therewith by operating all of the drive control unit in unison so as to lock or unlock.

When there is a malfunction of the electromagnetic solenoid or the bar of the lock related to one or a plurality of driving devices, while the operation of the others is completed, the same command signal as described above is sent to one Even when the drive control device is released from the central control device, the drive control device for the portion where the operation has been completed can maintain the state without operating again, and the same operation can be repeated again only for the portion where the operation has failed.

Therefore, according to the present invention, the number of command signal lines from one central control unit to a plurality of drive control units can be reduced, thereby reducing the cost and reliably preventing the drive control unit of each lock from malfunctioning. Thus, there is an effect that a safe electric lock system can be provided.

[Brief description of the drawings]

FIG. 1 is a layout diagram showing an installation example of an electric lock system.

FIG. 2 is an explanatory diagram of an operation of a main part of the electric lock.

FIG. 3 is a block diagram showing a connection state between a central control device and a drive control device.

FIG. 4 is a circuit diagram of a drive control device.

FIG. 5 is a block diagram showing a connection state between a conventional central control device and a drive control device.

[Explanation of symbols]

 Reference Signs List 3 door 4 lock 5 drive control device 6 central control device 7 bar 9 electromagnetic solenoid 12 first sensor 13 second sensor 14 common command line 17 locking command input unit 19 unlock command input unit 18, 20 relay Tr3, Tr4 transistor

Claims (1)

(57) [Claims] 1. A central control device and a plurality of drive control devices provided for each lock are connected by a common command signal line, and a command for locking / unlocking is issued from the central control device. Each time a pulse signal is issued, the bar provided for each lock is driven in the locking direction and the unlocking direction via an electromagnetic solenoid by operating a relay provided in each drive control device for an appropriate time. In the control device, the switch section of the locking relay and the switch section of the unlocking relay are connected in parallel to the electromagnetic solenoid, and the switching related to the sensor that detects the locking and unlocking state of the bar rod An electric lock device, wherein a mechanism is connected in series to each of said switch units.