JPH1122265A - Locking and unlocking controller for storing container group - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain reduction in wiring and improvement in reliability by connecting in series control circuits for an electric lock device provided to each storing container, and providing a controller with a pulse counter, thereby enabling detection of the storing container generating abnormality. SOLUTION: A set key code is input from a tenkey 7, and if it is correct a normally open contact closes to make impossible operation of a relay. In locking, a locking switch 10 is operated, while in unlocking, an unlocking switch 11 is operated to perform locking and unlocking of a corresponding storing container 2. In the case where an operational error generates in any opening/ closing member 1 so that an electric actuator is in operation condition, a current value does not decrease, and a pulse at that time is counted and the condition is displayed on a display lamp 2. In the case of failure in a third storing container, for example, the numeral 3 is displayed to make it possible to cope with the abnormal condition speedily. Wiring for central control is simplified to make easy the execution of work. Accordingly, the detection on abnormality in a storing container can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a number of lockers,
A storage, cabinet, or building room (hereafter,
These are collectively referred to as "storage." The present invention relates to a lock / unlock control device for a group of storages provided with an electric lock device capable of automatically locking and unlocking the opening / closing body of the storage by an electric driving means provided for each case.

[0002]

2. Description of the Related Art Japanese Unexamined Utility Model Publication No. Sho 61-5964 and Japanese Examined Patent Publication No. Hei 4-17698 disclose an apparatus for centrally controlling a large number of storage groups provided with an electric lock device. An electric lock device that independently controls the electric lock device of the storage is disclosed.

In the former disclosed in the above publication, wiring is individually provided from a power supply unit serving as a central control unit to a solenoid serving as an electric driving means provided for each storage.

[0004] In the latter disclosed in the above-mentioned publication, wiring is performed once from a central control unit to a plurality of repeaters provided for each block, and then wired from a repeater of each block to each electric drive means. Is given.

[0005]

In the above-mentioned prior art, it is necessary to perform wiring individually to the electric drive means directly from the central control unit or via a repeater, which requires a large amount of wiring cables. At the same time, near the central control unit, multiple wiring cables are connected in parallel and penetrate the housing wall of storage and other furniture, so wiring work at the beginning of installation,
There is a problem that a great deal of labor is required for wiring work, maintenance and inspection, and repair at the time of expansion.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention reduces the number of wiring cables, uses a power supply or a wiring cable with a small current capacity, reduces the cost, and reduces the number of core wires. An object of the present invention is to provide a locking / unlocking control device for a group of storages that enables confirmation of the locking / unlocking operation of all the storages even in the case of the two-wire system, thereby improving reliability.

Another object of the present invention is to be able to specify an open / closed body in which an abnormality has occurred if any of the openable / closed bodies has an abnormality.

[0008]

According to the present invention, the above-mentioned problem is solved as follows. (1) A lock / unlock control device for a group of storages provided with an electric lock means capable of automatically locking and unlocking the opening / closing body of each of the storages by electric drive means provided in each of the plurality of storages. An electric drive means for operating the electric lock means in the unlocking or locking direction when a required voltage is applied to each of the storages; and an input terminal for applying the applied input voltage to the electric drive means. Lock / unlock detection means operating in accordance with the voltage polarity applied to the input terminal and the lock / unlock state of the electric lock means, and an input terminal in a subsequent stage according to the operation state of the lock / unlock detection means, An output terminal for outputting an input voltage is provided, and each storage is connected in series by connecting an input terminal of another storage to an output terminal of each storage, and an input voltage is connected to an input terminal at the forefront stage. And the final The unlocking control box which receives the output voltage from the output terminal is provided for, the 該施 unlocking control box 1 in the input power applied to the foremost input terminal
A pulse counter is provided which counts a change in the amount of electricity required for the locking and unlocking operation of the opening / closing member of each storage box as a pulse and counts the number of pulses.

(2) In the above item (1), a timer for delaying the output of the input voltage from the output terminal to the subsequent input terminal is provided for each storage.

(3) In the above item (1) or (2), the locking / unlocking control box is provided with a display device for receiving a signal from the pulse counter and reporting the abnormal storage.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 shows an example of a centralized locking / unlocking system to which the present invention is applied in an office furniture facility in which a plurality of storages (2) each having an opening / closing body (1) such as a door or a drawer requiring locking are combined and integrated. It is a block diagram showing an outline.

FIG. 2 is an electric circuit diagram for controlling the electric lock means (4) provided in each storage (2) and having the electric actuator (3) as electric drive means. In addition,
The connection mechanism between the electric lock means (4) and the locking / unlocking mechanism is the same as the conventional one, so that it is not shown.

The electric actuator (3) unlocks or locks the electric lock means (4) when a required voltage is applied in conjunction with a locking / unlocking mechanism for locking / unlocking the opening / closing body (1) of the storage (2). This is an electric drive unit that operates in the locking direction.

The electric actuator (3) includes an electric motor type, a solenoid type and the like.

The locking / unlocking control box (5) includes a central control unit,
Alternatively, it is provided in any one of the storages (2), and FIG.
The control circuit shown in FIG. The lock / unlock control box (5) includes a DC power supply (6), a numeric keypad (7), a power switch (8), an emergency master switch (9), a lock operation switch (10), and an unlock operation switch. (11), a group of required status indicators (12), and a pulse counter (41).

The pulse counter (41) is a switch for opening and closing one storage (2) with the electric power applied to the first stage of the locking and unlocking control circuit (20) of the serially connected locking and unlocking control circuit (20). (1)
The amount of change in the amount of electricity required for the locking / unlocking operation is counted as a pulse (see FIG. 4), and the number of pulses is counted.

In FIG. 4, the above change is regarded as a change in the current value.

When a malfunction or the like occurs in any of the opening / closing members (1) and the electric actuator (3) remains in the operating state, the current value does not decrease. In such a case, the pulse counter (41) keeps counting the pulses when the pulse count reaches the high value, and displays the count number on the status indicator lamp group (12). For example, if an abnormality occurs in the opening / closing body (1) of the third storage from the forefront, and the electric actuator (3) of the storage (2) remains in the operating state,
The drop of the third pulse from the beginning in FIG. 4 disappears, and 3 is displayed on the status indicator lamp group (12), and it is reported to the person who locked and unlocked that the abnormality has occurred in the third storage from the forefront. Inform.

From the numeric keypad (7), a key code set by the security manager of the office furniture is input, and the key code is judged to be appropriate by the key code decoder (13). Then, the operation permission normally open contact (14) is closed, and the locking relay (15) and the unlocking relay (16) become operable.

The master key switch (9) is provided with a normally open contact (9a) connected in parallel to the operation permission normally open contact (14). The locking relay (15) operates by closing a locking operation switch (10) provided in series with the locking relay (15), and its operating state is self-held by a self-holding contact (15a). The unlocking relay (16) is operated by closing an unlocking operation switch (11) provided in series with the unlocking relay (16), and its operation state is self-held by a self-holding contact (16a).

The operation of the locking relay (15) is a pair of normally open contacts.
By (15b) and (15b), the voltage of the DC power supply (6) is applied to the power supply output terminals (17a) and (17b) so that the terminal (17a) in the upper part of the figure becomes positive.

The operation of the unlocking relay (16) is a pair of normally open contacts.
By (16b) and (16b), the voltage of the DC power supply (6) is applied to the power supply output terminals (17a) and (17b) so that the terminal (17b) below the drawing has a positive polarity.

That is, the locking relay (15) and the unlocking relay (1)
6) outputs voltages of opposite polarities to the power supply output terminals (17a) and (17b).

One of the drive circuit connecting ends of the locking relay (15) and the unlocking relay (16) is connected in common to each other, and the connection point is connected to the operation permission normally open contact (14) and the normally open contact (9a). ), The normally closed contact (19a) of the operation completion confirmation relay (19) connected to the completion check input terminal (18) (18) is connected in series with the parallel circuit, It is connected to a negative terminal, which is one end of (6). The power of the key code decoding unit (13) is supplied from the normally closed contact (19a) so that the key code decoding unit (13) can be reset.

Electric lock means (4) in each storage (2)
Is provided with an unlocking control circuit (20) shown in FIG.

The lock / unlock control circuit (20) has a pair of input terminals (2
1a) and (21b) and a pair of output terminals (22a) and (22b). Between each storage (2), the output terminal of the storage (2) in the preceding stage is provided.
(22a) and (22b) and the input terminals (21a) and (21b) of the storage (2) at the subsequent stage are sequentially chain-connected to each other via a delay circuit (42).

The delay circuit (42) is a circuit for controlling the flow of current to the next lock / unlock control circuit (20) by a variable capacitor (not shown), and the time (Ts) between pulses shown in FIG. This is a circuit that can adjust the pulse count and accurately perform the pulse count by the pulse counter (41).

The input terminal (21) of the storage (2a) at the forefront stage
a) and (21b) are the power output terminals (17) of the locking and unlocking control box (5).
a) (17b), output terminal (22a) (22b) of the last storage (2b)
Is the completion check input terminal (1) of the lock / unlock control box (5).
8) and (18) are connected in the same manner as the storages (2).

Locking / unlocking control circuit (20) in each storage (2)
Is connected between the input terminals (21a) and (21b), and the output terminals (22a) (22
When the output voltage is applied from b), when the storage (2) is in a lockable / unlockable state, the voltage is controlled by the electric lock means.
The electric actuator (3) is applied to the electric actuator (3) of (4), and the electric actuator (3) operates according to the applied voltage polarity at that time and the locked / unlocked state.

After the electric actuator (3) operates in the unlocking direction, when the storage (2) is in the unlocked state,
When a voltage is applied to the electric actuator (3) in a voltage polarity opposite to the previous operation, the electric actuator (3) operates in the opposite direction to the previous operation. Do not work. Therefore, in order to operate the electric actuator (3) in the locking direction at the time of unlocking, a voltage having a polarity opposite to that at the time of unlocking must be applied.

For example, when an input voltage having a positive polarity at the upper input terminal (21a) is applied, the electric actuator (3)
Is driven in the locking direction, to drive the electric actuator (3) in the unlocking direction, the upper input terminal (21)
Apply an input voltage that makes a) a negative polarity.

A lock detecting means (23) and an unlock detecting means (24) for detecting a locked state and an unlocked state are provided between the input terminals (21a) and (21b).

Both the unlocking and unlocking detecting means (23) and (24) are input terminals.
(21a) The voltage polarity applied between (21b) and the electric lock means
It operates according to the locked / unlocked state of (4).

For example, the locking mechanism of the electric lock means (4) is provided with a locking state detection switch (25) and an unlocking state detection switch (26) interlocked with the main part of the mechanism, and the locking state detection switch (25) ) And unlocked state detection switch (26), diodes (27) and (28) for determining the input voltage polarity are provided in series with polarities opposite to each other, and both detection switches (25) and (26)
The lock detection relay (29) and the unlock detection relay (30) are respectively operated by AND of the diodes (27) and (28).

The lock detecting relay (29) has a diode (27) having a forward polarity with respect to the input voltage polarity (the upper input terminal (21a) has a positive polarity) capable of operating the electric actuator (3) in the locking direction. ), And when the locking mechanism has completed locking,
It can operate by a series circuit (logical product) with a lock state detection switch (25) that closes a contact.

The lock detection relay (30) has a diode (28) having a forward polarity with respect to the input voltage polarity (the upper input terminal (21a) has a positive polarity) capable of operating the electric actuator (3) in the locking direction. ), And when the locking mechanism has completed locking,
It can operate by a series circuit (logical product) with a lock state detection switch (26) that closes a contact. The two detection relays (29) and (30) operate when the locking and unlocking detection purposes are achieved, respectively.

The two detection relays (29) and (30) have switching contacts (29a) and (30a), respectively, and the switching contacts (29a) and (30a)
Switches the input terminal (21a) side to the switching common contacts (29b) (30
The normally closed contacts (29c) and (30c) are connected in series with each other so as to be on the b) side, and are connected so as to be in series with the electric actuator (3). With this, both detection relays
When (29) and (30) are not operating, the input terminals (21a) (21
The input voltage applied to b) is applied to the electric actuator (3).

Switching contact (29a), common contact (29b) of (30a)
The normally open contacts (29d) (30d) that are switched with respect to (30b)
They are commonly connected to each other, and are connected to an output terminal (22a) in the upper part of the figure. As a result, when one of the two detection relays (29) and (30) operates, the input voltage is changed to the output terminals (22a) and (22).
b) applied during

In this way, the two detection relays (29) and (30)
Is for the purpose of operation according to the input voltage polarity, that is, for the purpose of locking if the upper input terminal (21a) is positive polarity, and when the locking operation for that purpose is completed, the lock detection relay (29) Operates and the switching contact (29a) normally open contact
(29d) is closed to apply the input voltage to the output voltages (22a) and (22b).

Similarly, if the upper input terminal (21a) has a negative polarity, the purpose is to unlock, and when the intended unlocking operation is completed, the unlock detection relay (30) operates and the switching contact (30) is activated.
The normally open contact (30d) of a) is closed and the input voltage is output to the output terminal (22a).
(22b).

In each of the locking and unlocking, when the locking and unlocking operation according to the purpose of each input voltage polarity is completed, the power of the power source is sent out to the storage (2) at the subsequent stage, and each storage is sequentially turned on.
When the lock / unlock of the last stage is completed by proceeding the lock / unlock of (2), the completion check input of the lock / unlock control box (5) from the output terminals (22a) and (22b) of the last stage. The output voltage is sent to the terminal (18).

In the lock / unlock control box (5), the operation completion confirmation relay (19) operates even if a positive or negative voltage is input to the completion check input terminal (18) at the time of locking or unlocking. At that time, the opening relay of the normally closed contact (19a) returns the locking relay (15) or the unlocking relay (16), resets the key code decoding unit (13), and outputs the voltage output of the DC power supply (6). And the control of locking and unlocking is surely terminated.

The control for sequentially locking and unlocking each storage (2) has been described above.
If any of the opening / closing body (1) is open at the time of locking, it takes time to check, so the opening / closing body opening / closing detection circuit (31)
Is provided in front of the locking control circuit (20) so that a quick locking operation can be performed.

Each storage (2) is provided with a switch (32) for detecting that the opening / closing member (1) is completely closed.

The detection switch (32) is connected in series with a normally open contact (32a), which opens a circuit when the open / close body is open, with an open / close body close detection relay (33), and an input terminal (21 '). a) (21'b)
It is provided between them. The normally open contact (32a) is connected in parallel with a diode (34) having a forward polarity with respect to a lower input terminal (21'b) to which a positive polarity is applied at the time of unlocking.

The input terminal of the opening / closing body opening / closing detection circuit (31)
(21′a) and (21′b) are input terminals (21 ′) of the lock control circuit (20).
a) Corresponding to (21'b), open / closed body open / close detection circuit (31)
Is provided before the locking control circuit (20).

An opening / closing body closing detection relay (33) is a switching contact
(33a), the switching common contact (33b) of the switching contact (33a) is connected to the input terminal (21a) to which a positive voltage is applied at the time of unlocking, and is normally switched by this contact (33b). The open contact (33d) is connected to the input terminal (21) to which the lock detection switch (25) and the unlock detection switch (26) are commonly connected.
Connected to the line connected to a).

The normally closed contact (33c) formed in cooperation with the common contact (33b) includes a diode (35) connected in series in the forward direction with respect to the positive voltage of the upper input terminal (21a). It is connected to the alarm means (36) via the control unit.

The alarm means (36) may be either a sounding buzzer (37) or a light emitting diode (38), but if both are used, prompt response processing can be performed.

For example, in the case of the sounding alarm of only the buzzer (37),
It is sometimes difficult to check which storage (2) is open or incompletely closed.
If (38) is provided on the front of the storage (2), the alarm sounds to alert the user, the abnormal storage (2) can be promptly confirmed, and the opening / closing body (1) is completely closed. Can be done promptly.

The opening / closing body closing detection relay (33) is connected to the upper input terminal.
(21a) operates when the opening / closing body (1) of the storage (2) is completely closed when the voltage is applied to the positive polarity, and the switching contact (33a) is normally opened (33d). Side, and the input voltage is applied to the electric actuator (3).

The capacitor (39) and the resistor (40) in the alarm means (36) are used for a short time until the switching contact (33a) switches when an input voltage is applied when the switch is completely closed. , A delay element that does not cause the buzzer (36) to sound.

At the time of locking in which the lower input terminal (21b) is applied with a positive polarity, the opening / closing body closing detection relay (33) is provided with a diode (34) provided in parallel with the opening / closing body full-close detection switch (32).
Therefore, regardless of the opening / closing operation of the detection switch (32),
By operating the opening / closing body detection relay (33), the input voltage is applied to the electric actuator (3).

In the above embodiment, the storage (2)
Has been described as a furniture facility having an opening and closing body such as a door or a drawer, such as a locker or a cabinet.
As long as it has an opening / closing body such as a door or a drawer, the present invention can be applied to, for example, a case where centralized control of locking and unlocking of a desk, a book shelf, and each room in a building is performed.

[0055]

The invention of claim 1 has the following effects.
By simply connecting each storage with a two-wire type cable having a small number of cores in a chain, centralized control wiring is completed. Therefore, the number of cables is reduced and wiring work can be performed easily.

With a simple circuit configuration, highly reliable centralized control can be performed. In the unlikely event that there is an error in unlocking or unlocking the opening / closing body of one of the storages, the count of the pulse counter stops. It is possible to immediately know whether an abnormality has occurred, and to quickly respond to the abnormal state.

According to the second aspect of the present invention, the pulse interval is lengthened by delaying the supply of the signal from the output terminal of one storage to the input terminal of the next storage by the timer, thereby increasing the pulse counter. Can accurately count the number of pulses, and the detection performance of the abnormal storage can be improved.

According to the third aspect of the present invention, the storage in which the abnormality has occurred can be quickly known.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an automatic locking and unlocking fixture system provided with an embodiment of the present invention.

FIG. 2 is an electric circuit for automatic locking and unlocking control in one storage in FIG. 1;

FIG. 3 is a control electric circuit diagram of the centralized control box shown in FIG.

FIG. 4 is a diagram showing a change in an operating current flowing through a control circuit.

[Explanation of symbols]

 (1) Opening / closing body (2) (2a) (2b) Storage (3) Electric actuator (Electric driving means) (4) Electric locking means (5) Locking / unlocking control box (6) DC power supply (7) Numeric keypad (8 ) Power switch (9) Emergency master key switch (9a) Normally open contact (10) Locking operation switch (11) Unlocking operation switch (12) Status indicator group (13) Key code decoding part (14) Operation permission normal Open contact (15) Locking relay (15a) Self-holding contact (15b) Normally open contact (16) Locking relay (16a) Self-holding contact (16b) Normally open contact (17a) (17b) Power output terminal (18) Complete operation Check input terminal (19) Operation completion confirmation relay (19a) Normally closed contact (20) Lock control circuit (21) (21a) (21b) Input terminal (22) (22a) (22b) Output terminal (23) Lock detection Means (24) Unlock detection means (25) Lock detection switch (26) Unlock detection switch (27) Diode (28) Diode (29) Lock detection relay (30) Unlock detection relay (31) Drive detection relay (29a) (30b) Switching contact (29b) (3 0b) Common contact (29c) (30c) Normally closed contact (29d) (30d) Normally open contact (30a) Switching contact (31) Opening / closing body open / close detection circuit (32) Opening / closing body fully closed detection switch (33) Detection relay (32a) Normally open contact (33a) Switching contact (33b) Common contact (33c) Normally closed contact (33d) Normally open contact (34) Diode (35) Diode (36) Alarm means (37) Buzzer (38) Light emitting diode (39) Capacitor (40) Resistance (41) Pulse counter (42) Delay circuit

Claims (3)

[Claims] An unlocking control of a group of storages provided with an electric lock means capable of automatically locking and unlocking an opening and closing body of each of the storages by an electric driving means provided in each of the plurality of storages. In the device, when a required voltage is applied to each of the storages, an electric drive unit that operates the electric lock unit in an unlocking or locking direction, and applies the applied input voltage to the electric drive unit. An input terminal, lock / unlock detection means operating in accordance with the voltage polarity applied to the input terminal and the lock / unlock state of the electric lock means, and an input terminal in a subsequent stage in accordance with the operation state of the lock / unlock detection means An output terminal for outputting an input voltage, and by connecting the input terminal of another storage to the output terminal of each storage, the respective storages are connected in series, and
A lock / unlock control box for receiving an output voltage from the final-stage output terminal while applying an input voltage to the foremost-stage input terminal is provided, and the lock / unlock control box is provided with an input power applied to the forefront-stage input terminal. A locking / unlocking control device for a group of storages, wherein a pulse counter is provided which counts the number of pulses as a change in the amount of electricity required for the operation of locking and unlocking the opening / closing body of one storage. 2. The lock / unlock control device for a group of storages according to claim 1, wherein a timer for delaying output of an input voltage from an output terminal to an input terminal at a subsequent stage is provided for each storage. 3. The lock / unlock control device for a group of storages according to claim 1, wherein the lock / unlock control box is provided with a display device for receiving a signal from the pulse counter and notifying the storage having an abnormality.