JP3821398B2 - Storage group locking / unlocking control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a large number of storage groups having an electric lock device capable of automatically locking and unlocking the opening / closing body of the storage by means of electric drive means provided for each storage such as a large number of office furniture. The present invention relates to a locking / unlocking central control device.
[0002]
[Prior art]
As a device for centrally controlling a large number of storage groups having an electric lock device, Japanese Utility Model Laid-Open No. 61-15964 and Japanese Patent Publication No. 4-176978 disclose an electric lock device for each storage from the main central control unit. What controls each part independently is disclosed.
[0003]
In the former in the above prior art, wiring is individually performed from the power supply unit as the central control unit to the solenoid as the electric actuator provided for each storage.
[0004]
Similarly, in the latter case, wiring is once performed from the central control unit to a plurality of repeaters provided for each block, and then from each block repeater to each electric drive means.
[0005]
[Problems to be solved by the invention]
In the above prior art, it is necessary to perform wiring individually from the central control unit to the electric drive means or the relay unit, and further to the electric unit, the relay unit requires a large amount of wiring cables, and in the vicinity of the central control unit. Multiple wiring cables can be used in parallel to penetrate the cabinet wall of the storage cabinet or other fixtures. It takes time and effort.
[0006]
In addition, since the plurality of electric driving means are controlled independently, it is necessary to secure a large current capacity for simultaneously driving the electric driving means.
[0007]
Furthermore, in order to control each electric drive means independently and to confirm the operation by the central control unit, a signal line for obtaining an operation confirmation signal is required in addition to the wiring for supplying the drive power. As a result, the number of core wires of the wiring cable increases, and the labor of wiring work and the price of the wiring cable increase.
[0008]
In order to solve the above-mentioned problems, the present invention reduces the amount of use of a wiring cable, uses a power source and a wiring cable having a small current capacity, reduces the price, and reduces the number of core wires. It is an object of the present invention to provide a storage group locking / unlocking control device that can confirm the locking / unlocking operation of all the storages and can improve the reliability.
[0009]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) a plurality of electric drive means provided in each storing box, by its electric drive means, e Bei electric locking means which can be automatically locked and unlocked opening and closing of the repository, locking of the respective storage boxes At the time of lock control, by supplying a drive voltage to the electric drive means of each storage from a control box equipped with a power supply, the lock / unlock control of a storage is performed after the lock / unlock control of the previous storage, and thereafter In the locking / unlocking control device of the storage group in which the locking / unlocking control of the subsequent storage is performed , when the voltage of the required polarity is applied, the electric driving means that operates the locking device in the unlocking or locking direction, and the storage A lock / unlock control circuit for driving the electric drive means when the cabinet is operable to either lock or unlock;
Connected to the output terminal of the locking / unlocking control circuit in the previous storage, and the input terminal of the storage that can apply the input voltage applied from the output terminal to the electric drive means;
According to the voltage polarity applied to the input terminal of the storage, the locking / unlocking detecting means that operates according to the control state of either locking or unlocking of the electric locking means, and the operating state of the locking / unlocking detecting means, the input terminal of the locking and unlocking control circuit in the subsequent stage of the storing box, and an output terminal for outputting a voltage applied to the input terminal of the storage boxes with each storing box is provided, the input terminal of the locking and unlocking control circuit in each storing box And the output terminal are sequentially connected in a chain from the power source .
[0010]
(2) In the above item 1, the input terminal of the locking / unlocking control circuit in the foremost storage is connected to the output terminal of the power supply in the control box .
[0011]
(3) In the above item 1, the output terminal of the locking / unlocking control circuit in the final stage storage is connected to the complete check input terminal in the control box .
[0012]
(4) In any one of the above items 1 to 3, the input terminal of the locking / unlocking control circuit in the storage is in accordance with the detection state of either opening or closing of the open / close state detection means of the opening / closing body provided in the storage. The input voltage applied from the output terminal of the previous stage is applied to the input terminal of the lock / unlock control circuit of the storage .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 show an embodiment of the present invention.
FIG. 1 shows an example of a central locking / unlocking system to which the present invention is applied in an office furniture facility in which a storage (2) having an opening / closing body (1) such as a door or a drawer that requires locking is combined and integrated. It is a block diagram which shows an outline.
[0014]
FIG. 2 is an electric circuit diagram for controlling the electric lock means (4) including the electric actuator (3) provided in each storage (2). In addition, since the connection structure of the electric lock means (4) and the locking mechanism is the same as the conventional one, the illustration is omitted.
[0015]
The electric actuator (3) is an electric drive that operates the electric lock means in the unlocking or locking direction when a required voltage is applied in conjunction with the locking / unlocking mechanism that locks the opening / closing body (1) of the storage (2). Means. Examples of the electric actuator (3) include an electric motor type, a bistable solenoid type, and a monostable solenoid type.
[0016]
(5) is a locking / unlocking control box provided in any one of the central control unit or each storage (2), and is configured with the control circuit shown in FIG.
The unlocking control box (5) includes a DC power source (6), a numeric keypad (7), a power switch (8), an emergency master key switch (9), a locking operation switch (10), and an unlocking operation switch (11). And a necessary state indicator lamp group (12).
[0017]
From the numeric keypad (7), the key code set by the security administrator of the office equipment is input, and when the key code is judged to be appropriate by the key code decoding unit (13), The normally open contact (14) is closed, and the locking relay (15) and the unlocking relay (16) can be operated.
[0018]
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 operation state is self-held by the 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 the self-holding contact (16a).
The operation of the locking relay (15) is as follows. The voltage of the DC power supply (6) is applied to the power output terminals (17a) and (17b) by the pair of normally open contacts (15b) and (15b). Is applied so as to be positive.
[0020]
The unlocking relay (16) is operated by a pair of normally open contacts (16b) and (16b) to connect the voltage of the DC power source (6) to the power output terminals (17a) and (17b) and the lower terminals (17b ) Is applied so as to be positive.
[0021]
That is, the locking relay (15) and the unlocking relay (16) can output voltages having opposite polarities to the power output terminals (17a) and (17b).
[0022]
One of the drive circuit connecting ends of both the locking relay (15) and the unlocking relay (16) is connected to each other in common, and the connection point is 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 terminals (18) and (18) is connected to the DC power supply (6) through the parallel circuit and in series with the parallel circuit. ) Is connected to the negative terminal which is one end of the terminal.
Note that the power of the key code decoding unit (13) is supplied through the normally closed contact (19a) so that the key code decoding unit (13) can be reset.
[0023]
The electric lock means (4) in each storage (2) is provided with a locking / unlocking control circuit (20) shown in FIG.
[0024]
The locking / unlocking control circuit (20) includes a pair of input terminals (21a) (21b) and a pair of output terminals (22a) (22b). The output terminals (22a) and (22b) of the storage box (2) are connected to the input terminals (21a) and (21b) of the subsequent storage box (2), and the upper terminals (21a and 22a) are The lower terminals (21b) and (22b) are connected in a chain so as to be connected to each other.
[0025]
The input terminals (21a) and (21b) of the foremost storage (2a) are connected to the power output terminals (17a) and (17b) of the locking / unlocking control box (5) and the output of the final storage (2b). The terminals (22a) and (22b) are respectively connected to the completion check input terminals (18) and (18) of the locking and unlocking control box (5) in the same manner as the storage boxes (2).
[0026]
When the output voltage is applied between the input terminals (21a) and (21b) from the output terminals (22a) and (22b) in the previous stage, the locking / unlocking control circuit (20) in each storage (2) ) Is in an unlockable state, the voltage is applied to the electric actuator (3) of the electric lock means (4), and the electric actuator (3) Works according to.
[0027]
After the electric actuator (3) operates in the unlocking direction, when the storage (2) is in the unlocked state, a voltage is applied to the electric actuator (3) with a voltage polarity in the opposite direction to the previous operation. Then, the electric actuator (3) operates in the direction opposite to the previous time, and does not operate in the direction opposite to the previous time with the same voltage polarity as the previous time. 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.
[0028]
For example, when an input voltage having a positive polarity at the upper input terminal (21a) is applied, if the electric actuator (3) is driven in the locking direction, the electric actuator (3) is driven in the unlocking direction. Applies an input voltage with the upper input terminal (21a) having a negative polarity.
[0029]
Between the input terminals (21a) and (21b), there are provided a locking detection means (23) and an unlocking detection means (24) for detecting the locked state and the unlocked state, respectively.
[0030]
Unlocking of both detecting means (23) (24), in response to a voltage polarity applied between the input terminal (21a) (21b), and facilities tablets or unlocking any state of the electric lock means (4) Is supposed to work.
[0031]
For example, the locking mechanism in 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 the unlocking mechanism are unlocked. In the lock state detection switch (26), diodes (27) and (28) for determining the input voltage polarity are provided in series with opposite polarities, respectively, so that both detection switches (25) and (26) and diodes (27) and (28) ), The locking detection relay (29) and the unlocking detection relay (30) are operated.
[0032]
The locking detection relay (29) includes a diode (27) having a forward polarity with respect to an input voltage polarity (the upper input terminal (21a) is positive) capable of operating the electric actuator (3) in the locking direction; When the locking mechanism completes locking, it can be operated by a series circuit (logical product) with the locking state detection switch (25) that closes the contact.
[0033]
The unlock detection relay (30) is a diode (28) having a forward polarity with respect to the input voltage polarity (the upper input terminal (21a) is negative) capable of operating the electric actuator (3) in the unlocking direction. When the unlocking mechanism completes unlocking, it can be operated by a series circuit (logical product) with the unlocking state detection switch (26) that closes the contacts.
Both detection relays (29) and (30) operate when the detection purpose of locking and unlocking is achieved, respectively.
[0034]
Both detection relays (29) and (30) are each provided with a switching contact (29a) and (30a), and the switching contact (29a) and (30a) are connected to the input terminal (21a) side and the switching common contact (29b) ( The normally closed contacts (29c) and (30c) are connected in series so as to be on the 30b) side, and are connected in series with the electric actuator (3).
Thereby, when both the detection relays (29) and (30) are not operating, the input voltage applied to the input terminals (21a) and (21b) is applied to the electric actuator (3).
[0035]
The normally open contacts (29d) and (30d) that are switched with respect to the common contacts (29b) and (30b) of the switching contacts (29a) and (30a) are connected in common to each other and connected to the output terminal (22a) in the upper part of the figure. ing.
Thus, when either one of the detection relays (29) and (30) is operated, the input voltage is applied between the output terminals (22a) and (22b).
[0036]
In this way, both detection relays (29) and (30) are intended for operation according to the input voltage polarity, that is, if the upper input terminal (21a) is positive, the purpose of locking is that purpose. When the operation is completed, the locking detection relay (29) operates, the normally open contact (29d) of the switching contact (29a) is closed, and the input voltage is applied to the output terminals (22a) (22b).
[0037]
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 unlocking detection relay (30) is activated and the switching contact (30a) is normally connected. The open contact (30d) is closed and the input voltage is applied to the output terminals (22a) and (22b).
[0038]
In both locking and unlocking, when the unlocking operation according to the purpose of each input voltage polarity is completed, the power of the power source is sent to the subsequent storage (2), and the lock (unlocking) of each storage (2) is sequentially advanced. When the final stage storage (2b) is locked and unlocked, the output voltage is output from the final stage output terminals (22a) and (22b) to the complete check input terminal (18) of the locking and unlocking control box (5). Will be sent.
[0039]
In the locking / unlocking control box (5), the operation completion confirmation relay (19) operates regardless of whether the positive or negative voltage at the time of locking or opening is input to the complete check input terminal (18). At that time, the locking relay (15) or unlocking relay (16) is restored by the opening operation of the normally closed contact (19a), the key code decoding part (13) is reset, and the voltage output of the DC power supply (6) And the control of locking / unlocking is surely terminated.
[0040]
The above has described the control for sequentially locking and unlocking each storage (2). However, if any of the opening / closing bodies (1) of each storage (2) is open during locking, Since confirmation takes time and effort, a separate 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.
[0041]
Each storage (2) is provided with an open / close body full-close detection switch (32) for detecting that the open / close bodies (1) are all closed.
[0042]
The rough detection switch (32) has a normally open contact (32a) that opens the circuit when the switch is open, connected in series with the switch closing detector relay (33), and an input terminal (21'a) ( 21'b). The normally open contact (32a) is connected in parallel with a diode (34) having a forward polarity with respect to the lower input terminal (21′b) to which positive polarity is applied at the time of unlocking.
[0043]
The input terminals (21'a) and (21'b) of the open / close body opening / closing detection circuit (31) correspond to the input terminals (21a) and (21b) of the locking control circuit (20) and By providing the detection circuit (31) in front of the locking control circuit (20), the input terminals (21'a) and (21'b) in the foremost stage are the control circuit as the storage (2) according to the present invention. This is the entire input terminal.
[0044]
The switching body closing detection relay (33) includes a switching contact (33a), and the switching common contact (33b) in the switching contact (33a) is connected to the input terminal (21a) to which a positive voltage is applied at the time of unlocking. The normally open contact (33d) connected and switched by this contact (33b) is connected to the lock detection switch (25) and the unlock detection switch (26), and the input terminal (21a)
Connected to a line connected to
[0045]
The normally closed contact (33c) formed by the common contact (33b) is connected to alarm means (36) via 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.
[0046]
The alarm means (36) may be either the sound generation type buzzer (37) or the light emitting type light emitting diode (38), but if both are used, a prompt response process can be performed.
[0047]
For example, in the sound alarm only for the buzzer (37), it may be difficult to confirm which storage (2) open / close body (1) is open or incompletely closed. If it is provided in front of the storage (2), attention is alerted by an alarm sound, the storage (2) having an abnormality can be quickly confirmed, and the opening / closing body (1) can be quickly closed.
[0048]
The open / close body closing detection relay (33) operates when the open / close body (1) of the storage (2) is completely closed when the voltage is applied to the upper input terminal (21a) with a positive polarity. Then, the switching contact (33a) is switched to the normally open contact (33d) side, and the input voltage is applied to the electric actuator (3).
[0049]
The capacitor (39) and the resistor (40) in the alarm means (36) are connected to the buzzer (36) for a short time until the switching contact (33a) is switched when the input voltage is applied when the switch body is fully closed. ) Is a delay element that does not sound.
[0050]
When locking the lower input terminal (21b) to the positive polarity, the opening / closing body closing detection relay (33) is detected by a diode (34) provided in parallel with the opening / closing body fully closing detection switch (32). Regardless of the open / close state of (32), the open / close detection relay (33) is operated to apply the input voltage to the electric actuator (3).
[0051]
In the above embodiment, the storage has been described as a fixture that mainly includes an open / close body such as a locker or cabinet. However, even if it is a variety of other office fixtures such as desks and bookshelves, the required storage is provided. If it is an automatic locking device provided with an electric lock means in the part, it can be linked with a general storage to centrally control the locking and unlocking.
[0052]
【The invention's effect】
According to the present invention, the following effects can be achieved.
[0053]
(A) According to the invention of claim 1, since the central control wiring is completed simply by connecting each storage box in a chain form with a two-wire cable having a small number of core wires, the amount of use of the cable is small. Wiring work can be done easily.
[0054]
(B) Since locking and unlocking are selectively controlled according to the polarity of the power supply voltage, the consistency with the locking and unlocking detection means is good, and highly reliable centralized control can be performed with a simple circuit configuration.
[0055]
(C) Since only one electric actuator with high power consumption can be operated at a time for each storage, it does not require a large power source, is economical, and has a small shape. As a result, the central control box can be installed in the extra space between the walls of the storage cabinet or in the space between the desks and shelves in other fixtures and equipment that are not directly related to control. Construction is easy.
[0056]
(D) According to the invention of claim 2, since the power supply side seen from the input terminal of the storage that requires control is the same for both the power supply and the other storage, the power is turned on where the wiring is formed in a chain shape. However, the configuration of the chain wiring becomes easy, and there is no problem with the storage location of the central control box.
[0057]
(E) According to the invention of claim 3, after the locking or unlocking of each of the storages connected in a chain shape is reliably performed, the complete check input terminal of the power source that first outputs the control voltage is Since the output voltage returns, it is possible to easily confirm the operation of locking / unlocking.
[0058]
(F) According to the invention of claim 4, since the open / close state of the opening / closing body is automatically detected and the electric drive means is not operated when it is not suitable for locking and unlocking, there are a large number of storages. There is no inconvenience of ending the central control while one of the cabinets remains forgotten to be locked.
[Brief description of the drawings]
FIG. 1 is a block diagram of an automatic locking / unlocking fixture system for explaining the point of implementation of the present invention.
2 shows an embodiment of the present invention, and is an electric circuit diagram of automatic locking / unlocking control in one storage in FIG. 1. FIG.
FIG. 3 is a control electric circuit diagram of the centralized control box shown in FIG. 1;
[Explanation of symbols]
(1) Opening and closing body
(2) (2a) (2b) Storage
(3) Electric actuator
(4) Electric lock 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) Unlock operation switch
(12) Status indicators
(13) Key code decoding part
(14) Operation permission normally open contact
(15) Locking relay
(15a) Self-holding contact
(15b) Normally open contact
(16) Unlocking relay
(16a) Self-holding contact
(16b) Normally open contact
(17a) (17b) Power supply output terminal
(18) (18) Complete check input terminal
(19) Operation completion confirmation relay
(19a) Normally closed contact
(20) Locking / unlocking control circuit
(21) (21) (21a) (21b) Input terminal
(22a) (22b) Output terminal
(22) (22) (22a) (22b) Output terminal
(23) Locking detection means
(24) Unlock detection means
(25) Locking state detection switch
(26) Unlocked state detection switch
(27) (28) Diode
(29) Locking detection relay
(30) Unlock detection relay
(29a) (30a) switching contact
(29b) (30b) Common contact
(29c) (30c) Normally closed contact
(29d) (30d) Normally open contact
(30a) Switching contact
(31) Open / close body open / close detection circuit
(32) Open / close detection switch
(33) Open / close body close detection relay
(32a) Normally open contact
(33a) Switching contact
(33b) Common contact
(33d) Normally open contact
(33c) Normally closed contact
(34) Diode
(35) Diode
(36) Alarm means
(37) Buzzer
(38) Light emitting diode
(39) Condenser
(40) Resistance

Claims (4)

An electric drive means provided for each of the plurality of the storing box, due to its electric drive means, e Bei electric locking means which can be automatically locked and unlocked opening and closing of the repository at the time of unlocking the control of the respective storage boxes By supplying a drive voltage to the electric drive means of each storage from a control box equipped with a power supply, the lock / unlock control of a certain storage is performed after the lock / unlock control of the previous storage, and then the latter In the storage / locking control device of the storage group in which the storage / unlocking control of the storage is performed ,
When a voltage of the required polarity is applied, the electric drive means for operating the electric lock means in the unlocking or locking direction;
A lock / unlock control circuit that drives the electric drive means when the storage is operable to either lock or unlock;
Connected to the output terminal of the locking / unlocking control circuit in the previous storage, and the input terminal of the storage that can apply the input voltage applied from the output terminal to the electric drive means;
Locking / unlocking detecting means that operates according to the voltage polarity applied to the input terminal of the storage and the control state of either locking or unlocking of the electric lock means;
According to the operation state of the locking / unlocking detection means, an output terminal for outputting the voltage applied to the input terminal of the storage to the input terminal of the locking / unlocking control circuit in the subsequent storage
And a storage group locking / unlocking control device in which the input terminals and the output terminals of the locking / unlocking control circuit in each storage are sequentially connected from the power supply . The lock / unlock control device for a storage group according to claim 1, wherein an input terminal of a lock / unlock control circuit in the foremost storage is connected to an output terminal of a power source in the control box . The lock / unlock control device for a storage group according to claim 1, wherein an output terminal of the lock / unlock control circuit in the final stage storage is connected to a complete check input terminal in the control box . The input terminal of the lock / unlock control circuit in the storage is applied with the input voltage applied from the output terminal of the previous stage, depending on whether the open / close state detection means of the opening / closing body provided in the storage is open or closed. 4. The storage group locking / unlocking control device according to any one of claims 1 to 3, which is applied to an input terminal of a lock / unlock control circuit of the storage.

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