JP4327488B2 - Electronic lock device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic lock control device that electrically locks and unlocks a door.
[0002]
[Prior art]
A so-called electronic lock device for electrically locking and unlocking a door has been well known. As the electronic lock device, for example, a locking / unlocking mechanism that mechanically operates a dead bolt of a door is attached, and an operation command for the locking / unlocking mechanism is remotely output to operate the dead bolt by the locking / unlocking mechanism. Thus, the door is locked or unlocked as an example (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP-A-6-50039 (page 3, Fig. 1)
[0004]
[Problems to be solved by the invention]
However, the electronic lock device requires a power supply cord for supplying power to the locking / unlocking mechanism, and the power supply cord passes through the door from the door opening side where the locking / unlocking mechanism is installed. In many cases, it is connected to a fixed power source (commercial power source, etc.) outside the door, and considerable labor and cost are required for the construction.
[0005]
In such a case, each time the door is opened / closed, the power supply cord may be routed, or bending may be repeated at a certain point of the power supply cord, which may cause deterioration or damage of the power supply cord. There was also a risk of a disconnection accident.
[0006]
In order to solve such a problem, a method has been adopted in which a battery is provided in a locking / unlocking mechanism that has been installed on a door, and power required for locking / unlocking is obtained using this battery power source. In this case, considering the miniaturization of the device, it is common to use an AA battery as the battery. However, the AA battery requires frequent battery replacement work due to its power consumption. It was inconvenient to.
[0007]
Accordingly, an object of the present invention is to provide an electronic lock device that does not cause a disconnection accident of the power supply cord due to opening and closing of the door and does not require any battery replacement work in order to solve the above-described problems. .
[0008]
[Means for solving problems]
The electronic lock device according to claim 1, wherein a primary side unit having a primary side of a coupling transformer is installed on the door frame side, and a secondary side of the coupling transformer configured to be separable from the primary side on the door side. A power supply device that supplies power from the primary unit to the secondary unit in a non-contact manner by the electromagnetic induction action of the coupling transformer, and to the secondary unit by the power supply device A control device that switches between locking and unlocking of the door using the supplied electric power, and the control device transmits a signal to the primary side unit and to a second signal transmission / reception circuit provided to the secondary side unit; A first signal transmission / reception circuit, and a drive stop circuit that switches driving / stopping of the power supply device in accordance with the output of the first signal transmission / reception circuit. For signal transmission / reception circuit A confirmation signal as to whether or not power can be supplied to the secondary unit is periodically transmitted. In the secondary unit, the second signal transmission / reception circuit receives the confirmation signal from the first signal transmission / reception circuit. A signal indicating that power can be supplied to the secondary unit is returned to the first signal transmission / reception circuit based on the information signal input to the second signal transmission / reception circuit. The signal transmission / reception circuit is configured to switch between driving / stopping of the drive stop circuit according to the presence / absence of a return signal from the second signal transmission / reception circuit, while the second signal transmission / reception circuit is configured to switch the first signal transmission / reception circuit. When the confirmation signal is not received from the circuit, no signal is transmitted / received to / from the first signal transmitting / receiving circuit .
[0009]
According to the electronic lock device of the first aspect, since it is not necessary to supply the power for locking or unlocking by the power supply cord, the power supply cord is routed by opening and closing the door and is damaged or deteriorated. It can be surely prevented.
[0010]
In addition, according to the electronic lock device of the first aspect, it is not necessary to secure power for locking or unlocking using the battery, so that no battery replacement work is required.
[0011]
Furthermore, according to the electronic lock device of claim 1, since it is possible to reliably grasp the open / closed state of the door, the locked / unlocked state, etc., and to supply power to the secondary unit only when necessary, Wasteful power consumption can be prevented.
[0012]
Moreover, according to the electronic lock device according to claim 1, can be reliably prevented from receiving the waste, the signal is performed according to the opening and closing status of the doors.
[0013]
The claim 2 electronic lock device according an electronic lock device according to claim 1, wherein the control device, wherein the secondary unit, and outputs the unlocking information of the door to the second signal transmitter key A state detection circuit, a cipher input circuit for inputting a cipher for unlocking, a judgment circuit for judging whether or not the cipher input from the cipher input circuit is correct, and outputting the result to the second signal transmitting / receiving circuit; When the second signal transmission / reception circuit receives the confirmation signal from the first signal transmission / reception circuit and inputs a signal indicating the unlocked state from the key state detection circuit, the predetermined time is measured and unlocked. When the state continues for a predetermined period of time, the timer unit prevents the forgetting to lock by automatically supplying power from the primary unit to the secondary unit and locking / unlocking according to the output of the second signal transmitting / receiving circuit. Switching circuit for switching the lock It was configured by including.
[0014]
According to the electronic lock device of the second aspect , forgetting to lock can be surely prevented, which is beneficial for crime prevention .
[0015]
Solutions electronic lock device according to claim 3, in electronic lock device according to claim 2 Symbol placement, the control device, when the timer circuit is completed the measurement of the predetermined time, or, which is input to the password input circuit When the encryption for the lock is correct, the information signal is output to the second signal transmission / reception circuit .
[0016]
According to the electronic lock device of the third aspect, when a correct unlocking code (password) is input from the encryption input circuit, the unlocking can be performed easily and surely.
[0017]
The electronic lock device according to claim 4 is the electronic lock device according to claim 2 or 3 , wherein the control device includes means for detecting a human body existing near a door, and a light source that illuminates a keyhole. The signal transmission / reception circuit includes a signal indicating a locked state from the key state detection circuit and a signal indicating that the human body is detected from the human body detection means in a state where the confirmation signal is received from the first signal transmission / reception circuit. When output, the light source is turned on until a signal indicating an unlocked state is output from the key state detection circuit.
[0018]
According to the electronic lock device of the fourth aspect, by illuminating the key hole of the key cylinder, it is possible to surely prevent troublesome time to open the key at night.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing a state in which the electronic lock device A of the present invention is installed on a flash door 1, and in FIG. 1, 2 is a door opening / closing handle attached to the outside of the door 1 (hereinafter referred to as a chamber). Called the outer handle).
[0020]
Reference numeral 3 denotes a latch bolt that moves in and out with respect to a latch hole 5 formed in the door frame 4 from the open side surface of the door 1 by operating the outdoor handle 2 and an indoor handle described later. A dead bolt that moves in and out with respect to the key receiving hole 7 formed in the vicinity of the latch hole 5 by turning the thumb turn (see FIG. 2) that is manually locked and unlocked is shown.
[0021]
Reference numeral 8 denotes a key cylinder provided with a key insertion hole 8a used when the door 1 is manually locked or unlocked from the outdoor side, and 9 is a primary core (see FIG. 3) constituting the coupling transformer 10 (see FIG. 3). And a primary side unit which is provided with a primary winding 10a wound around this and attached to the door frame 4 so as not to swing.
[0022]
Reference numeral 11 denotes a secondary core (not shown) that is disposed opposite to the primary core with a predetermined gap between the door 1 and the secondary winding wound around the secondary core. This is a secondary unit provided with a wire 10b (see FIG. 3), and is attached to the open side of the door 1 so as not to swing.
[0023]
A person 12 who opens and closes the door 1 (hereinafter referred to as a user) normally inserts a key into the insertion hole 8a of the key cylinder 8 and operates the key cylinder 8 to unlock the door 1. Instead of the locking method, a panel device is shown for inputting the unlocking code (password) when it is desired to unlock the door 1 from the outdoor side without operating the key cylinder 8.
[0024]
FIG. 2 is a side view showing the open side of the door 1 when the secondary unit 11 is attached. The door 1 has an indoor handle having the same configuration as the outdoor handle 2 at a position symmetrical to the outdoor handle 2. 13 is attached. In addition, a thumb turn 14 for manually moving the dead bolt 6 in and out of the key receiving hole 7 is installed on the indoor side of the door 1.
[0025]
In addition, a mechanical mechanism for converting the operation of the thumb turn 14 or the key cylinder 8 into a retracting operation of the latch bolt 3 and the dead bolt 6 and a drive unit for electrically moving the dead bolt 6 in and out by electric power control are provided. The electronic lock 15 is securely accommodated and fixed using a fixing means 16 such as a screw in an installation space drilled at a predetermined depth from the open side of the door 1 to the inside of the door 1.
[0026]
Further, in the vicinity of the electronic lock 15 (above the electronic lock 15 in FIG. 2), the secondary unit 11 has a predetermined depth from the open side surface of the door 1 toward the inside of the door 1, similar to the electronic lock 15. It is accommodated and fixed in the installation space drilled by fixing means 16 such as screws.
[0027]
Next, the configuration of the electronic lock device A including the primary unit 9, the secondary unit 11, and the panel device 12 will be described with reference to the block diagram of FIG. In FIG. 3, reference numeral 17 denotes a commercial power source that supplies power to the primary side unit 9 of the electronic lock device A, and 18 denotes a circuit (rectifying and smoothing circuit) that rectifies and smoothes the output of the commercial power source 17.
[0028]
Reference numeral 19 denotes a drive stop circuit for applying an alternating current to the coupling transformer 10 after converting the output of the rectifying / smoothing circuit 18 into alternating current. Reference numeral 20 denotes a second circuit for transferring various signals to and from the secondary side unit 11. 1 shows a signal transmission / reception circuit.
[0029]
Reference numeral 21 denotes a rectifying / smoothing circuit connected to the secondary side of the coupling transformer 10, and reference numeral 22 denotes a second signal transmission / reception circuit that exchanges various signals with the first signal transmission / reception circuit 20. The first and second signal transmission / reception circuits 20 and 22 are formed by winding signal transmission / reception windings 23a and 23b around a primary core and a secondary core (both not shown) of the coupling transformer 10, for example. By applying a modulation signal from the signal transmission / reception circuits 20 and 22 to the signal transmission / reception windings 23a and 23b, the signal transmission / reception facing each other is performed using the electromagnetic induction action of the coupling transformer 10. It is comprised so that a signal may be transmitted to the coil | windings 23b and 23a for use.
[0030]
Reference numeral 24 denotes a key locking / unlocking detection circuit that detects the locking / unlocking state of the door 1, and is configured as shown in FIG. 4, for example. That is, the lock / unlock detection circuit 24 installs the limit switch 25 at a position where the switch piece 25a is pressed at the rear end 6a of the dead bolt 6 when the dead bolt 6 is unlocked. According to the advance / retreat operation (locking / unlocking operation), the switch piece 25 a is pressed / released reversibly and an information signal indicating the locked state and the unlocked state is output to the second signal transmitting / receiving circuit 22. It is configured.
[0031]
26 is output when the second signal transmission / reception circuit 22 receives a signal indicating the unlocked state from the key state detection circuit 24 when the transmission signal of the first signal transmission / reception circuit 20 is received. A timer circuit that receives a command signal and measures a time arbitrarily set in advance, and 27 is a drive unit (for example, a direct current motor such as a brush motor) 27 that moves the dead bolt 6 in and out.
[0032]
28 is a switching circuit for switching the direction of the current supplied to the drive unit 27 in accordance with the output of the second signal transmission / reception circuit 22, and 29 is a determination circuit for determining whether the password inputted from the panel device 12 is correct or incorrect. Is shown. Then, the determination result of the determination circuit 29 is input to the second signal transmission / reception circuit 22 as an information signal. In FIG. 3, solid arrows indicate power flow, and dotted arrows indicate signal flow.
[0033]
Further, the advance / retreat of the dead bolt 6 by the drive unit 27 may be realized by the mechanism shown in FIG. That is, FIG. 5 shows an example of a device that converts the rotational motion of the drive unit 27 into the linear motion of the dead bolt 6, and the drive unit 27 cannot be swung by the fixing device 30 on the side surface inside the door 1. Install.
[0034]
Further, the output shaft 33 of the drive unit 27 has a gear (not shown) at the tip, and can be interlocked with a gear (not shown) inside the speed reduction mechanism 32 that is fixedly mounted in the vicinity of the drive unit 27 by the fixing device 31. It is connected to.
[0035]
On the other hand, the dead bolt 6 meshes with an internal gear (not shown) constituting the speed reduction mechanism 32 with one end thereof being a rack (tooth tooth) (not shown) and interlockingly connected. As a result, when the drive unit 27 rotates the output shaft 33 forward / reversely, the forward / reverse rotation of the output shaft 33 is sufficiently decelerated by the speed reduction mechanism 32 and then transmitted to the dead bolt 6. Is made to appear and disappear with respect to the key receiving hole 7 shown in FIG.
[0036]
Next, the operation of the electronic lock device A will be described. First, when the primary side unit 9 and the commercial power source 17 are connected by a power supply cord (not shown), the primary side unit 9 is supplied with power from the commercial power source 17. Thus, the first signal transmission / reception circuit 20 secures a control power supply from the commercial power supply 17 and periodically sends a confirmation signal as to whether or not power can be supplied to the secondary unit 11 to the outside (for example, 5 Sent every second).
[0037]
At this time, if the door 1 is closed, the primary side unit 9 and the secondary side unit 11 face each other. Therefore, the confirmation signal transmitted externally by the first signal transmission / reception circuit 20 is the second signal transmission / reception. Received reliably by the circuit 22.
[0038]
In the second signal transmission / reception circuit 22 that has received the confirmation signal, the output (information signal) of the key state detection circuit 24 indicates the locked state, and the output (information signal) of the determination circuit 29 is the panel device. If the input password of 12 indicates that it is correct, a command signal is sent back to the first signal transmitting / receiving circuit 20 to supply power to the secondary side unit 11, and the switching circuit 28 is switched. Then, the drive unit (hereinafter simply referred to as a motor) 27 is controlled to rotate forward.
[0039]
The first signal transmission / reception circuit 20 that has received the reply signal from the second signal transmission / reception circuit 22 drives the drive stop circuit 19 to use the electromagnetic induction action of the coupling transformer 10 and from the primary unit 9. Electric power is supplied to the secondary unit 11 in a non-contact manner.
[0040]
The electric power transmitted to the secondary unit 11 is converted into a DC voltage by the rectifying and smoothing circuit 21 and supplied to the switching circuit 28. The positive DC voltage output from the rectifying / smoothing circuit 21 is supplied to a DC power source (not shown) to form a control power source (not shown) for various circuits constituting the secondary unit 11.
[0041]
At this time, since the switching circuit 28 is switched so that the motor 27 rotates forward by the power supplied to the secondary unit 11, the motor 27 rotates forward by the power supplied to the secondary unit 11. Then, the door 1 is shifted from the locked state to the unlocked state.
[0042]
When the door 1 is unlocked, the unlocked state of the door 1 is immediately detected by the key state detection circuit 24 and input to the second signal transmission / reception circuit 22 as an information signal. Therefore, the second signal transmission / reception circuit 22 confirms that the door 1 has shifted from the locked state to the unlocked state, and transmits a signal to the first signal transmitting / receiving circuit 20 to stop power feeding.
[0043]
The first signal transmission / reception circuit 20 receives this signal and controls the drive stop circuit 19 to stop the power supply from the primary side unit 9 to the secondary side unit 11.
[0044]
To summarize the above operations, when the user inputs a preset correct password from the panel device 12 while the door 1 is locked, power is supplied from the primary unit 9 to the secondary unit 11. The switching circuit 28 performs switching so that the motor 27 rotates forward.
[0045]
As a result, the electric power supplied to the secondary unit 11 rotates the motor 27 in the forward direction to retract the dead bolt 6 shown in FIG. 4 into the door 1 and unlocks the door 1.
[0046]
If the password is not input from the panel device 12 or the input password is incorrect when the key state detection circuit 24 is outputting a signal indicating the locked state, the second signal transmission / reception is performed. The circuit 22 does not send a reply to the confirmation signal to the first signal transmitting / receiving circuit 20. Accordingly, the first signal transmission / reception circuit 20 stops driving the drive stop circuit 19 and stops power supply to the secondary unit 11.
[0047]
That is, unless the correct password is input, power is not supplied to the secondary unit 11 and the door 1 continues to be locked.
[0048]
On the other hand, the second signal transmission / reception circuit 22 receives the confirmation signal from the first signal transmission / reception circuit 20, and the second signal transmission / reception circuit 22 inputs an information signal indicating the unlocked state from the key state detection circuit 24. In this case, the second signal transmission / reception circuit 22 starts activation of the timer circuit 26 and measures a predetermined time arbitrarily set in advance.
[0049]
When the timer circuit 26 finishes measuring the predetermined time, the second signal transmission / reception circuit 22 transmits a reply signal to the confirmation signal to the first signal transmission / reception circuit 20 and also sends a response signal to the switching circuit 28 to the motor. A switching command is transmitted so that 27 rotates in the reverse direction.
[0050]
The first signal transmission / reception circuit 20 that has received the reply signal drives the drive stop circuit 19 to supply power from the primary side unit 9 to the secondary side unit 11, and rotates the motor 27 in the reverse direction. The dead bolt 6 shown in 4 is advanced into the key receiving hole 7.
[0051]
When the door 1 is locked, this locked state is immediately detected by the key state detection circuit 24 and output to the second signal transmission / reception circuit 22. Based on this information signal, the second signal transmission / reception circuit 22 confirms that the door 1 has shifted from the unlocked state to the locked state, and transmits an information signal indicating that power supply is stopped to the first signal transmission / reception circuit 20. To do.
[0052]
Thereby, the first signal transmission / reception circuit 20 stops the drive stop circuit 19 and stops supplying power from the primary side unit 9 to the secondary side unit 11.
[0053]
That is, when the door 1 is closed and the unlocking state continues for an arbitrarily set time, power is supplied from the primary unit 9 to the secondary unit 11 and the motor 27 is turned on. By driving in the reverse direction, the door 1 can be automatically locked to reliably prevent forgetting to lock.
[0054]
Since the confirmation signal transmitted from the first signal transmission / reception circuit 20 is not received by the second signal transmission / reception circuit 22 in the state where the door 1 is opened, the second signal transmission / reception circuit 22 is of course the first signal. The first signal transmission / reception circuit 20 stops driving the drive stop circuit 19 without transmitting a reply signal to the transmission / reception circuit 20, and power is wasted from the primary unit 9 to the secondary unit 11 when power supply is not required. Will not be supplied.
[0055]
As described above, the electronic lock device A of the present invention can be easily unlocked by inputting a predetermined password from the panel device 12 if the door 1 is in the locked state. If the unlocked state continues for a predetermined time, it can be automatically locked.
[0056]
That is, when opening the door 1 when returning home, it is not necessary to unlock the key cylinder 8 by operating the key cylinder 8 by inserting a key into the insertion hole 8a (see FIG. 1) of the key cylinder 8, and the door 1 can be opened by inputting a password. It can be opened quickly, and even when the door 1 is forgotten to be locked when returning home or going out, it is automatically locked.
[0057]
Next, a second embodiment of the present invention will be described with reference to FIG. An electronic lock device B shown in FIG. 6 includes, in addition to the electronic lock device A (see FIG. 3), a sensor (for example, a human body detection sensor using infrared rays or ultrasonic waves) 41 that detects a human body existing near the door 1 and a key cylinder. The illumination means 42 includes a light source such as a light bulb that illuminates the eight insertion holes 8a.
[0058]
In the electronic lock device B, the second signal transmission / reception circuit 22 receives a confirmation signal (confirmation signal as to whether power supply to the secondary side unit 11 is possible) from the first signal transmission / reception circuit 20, and the key When the information signal indicating the locked state is input from the state detection circuit 24, when the human body detection means 41 outputs a signal indicating the presence of the human body, the second signal transmission / reception circuit 22 transmits the signal to the illumination means 42. Until the information signal indicating the unlocked state is input from the key state detection circuit 24, a command signal for projecting the insertion hole 8a of the key cylinder 8 is output.
[0059]
Thus, the insertion hole 8a is illuminated until the key is inserted into the insertion hole 8a and the key cylinder 8 is operated or a predetermined password is input from the panel device 12 until the door 1 is unlocked. Illuminated by the means 42, and then the door 1 is unlocked, the illumination means 42 is turned off.
[0060]
In other words, in the electronic lock device B, when the human body approaches the door 1, the keyhole (insertion hole) 8 a is illuminated by the illumination means 42 until the door 1 is unlocked, and the ambient brightness such as at night is increased. In an unsatisfactory situation, the position of the keyhole (insertion hole) 8a cannot be grasped, and the occurrence of problems such as troublesome unlocking can be reliably prevented.
[0061]
Thus, since the electronic lock devices A and B of the present invention are configured to supply power for locking and unlocking the door 1 in a non-contact manner using the electromagnetic induction action of the coupling transformer, For example, the power supply cord for power supply does not need to be drawn into the door 1 from the lower end of the support shaft side of the door 1 and disposed near the center of the door 1, thereby opening and closing the door 1. In this case, it is possible to surely eliminate the occurrence of problems such as damage or deterioration due to the feeding cord being routed or inducing an accident such as disconnection.
[0062]
【The invention's effect】
Since the electronic lock device according to claim 1 is configured to supply the electric power necessary for locking and unlocking the door by the electromagnetic induction action of the coupling transformer, the electric power cord is pulled into the door as before, and the electronic lock is There is no need to install the power cord near the center of the door, and the power cord can be routed even when the door is opened and closed, preventing accidents such as damage, deterioration, and disconnection. Can be convenient.
[0063]
The electronic lock device according to claim 1, wherein, if the door is open can be reliably prevented from wastefully power to stop power supply from the primary unit to the secondary side unit is consumed, also When the door is closed, the door 1 can be locked and unlocked smoothly and effectively by the power supplied from the primary unit to the secondary unit, which is effective.
[0064]
Furthermore, electronic lock device according to claim 1, since in a state in which the door is opened with no signals being sent to the first signal transmitting and receiving circuit from the second signal transmitting and receiving circuit, a first signal transmitting and receiving circuits in the signal unreceivable In some situations, no signal is transmitted from the second signal transmitting / receiving circuit, which is effective.
[0065]
The electronic lock device according to claim 2 can automatically lock or unlock the door when the door is unlocked for a certain period of time, so even if you forget to lock the door when you go out or go home Can be locked.
[0066]
Since the electronic lock device according to claim 3 can automatically unlock the door when the user inputs a predetermined password , the user can enter the predetermined password without using a key when returning home. The door can be unlocked easily and securely, which is very convenient.
[0067]
The electronic lock device according to claim 4 is provided with illumination means for illuminating the keyhole when the user approaches the door, so that the position of the keyhole cannot be grasped in a dark environment such as at night. Therefore, it is possible to satisfactorily prevent the occurrence of problems such as troublesome work, which is very convenient.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a flush door provided with an electronic lock device of the present invention.
FIG. 2 is an enlarged side view of a main part of a flush door with the electronic lock device installed as viewed from the open side.
FIG. 3 is a block diagram showing the configuration of the electronic lock device in the first embodiment of the present invention.
FIG. 4 is a cutaway cross-sectional view showing a main part of an example of a device for detecting a lock / unlock state of a key in the electronic lock device of the present invention.
FIG. 5 is a side view showing an example of a device that converts the rotational motion of the drive unit of the electronic lock device into a linear motion of a dead bolt.
FIG. 6 is a block diagram illustrating a configuration of an electronic lock device according to a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Flash type door 4 Door frame 6 Dead bolt 7 Key receiving hole 9, 9a Primary side unit 11, 11a Secondary side unit 12 Panel apparatus 15 Electronic lock 18, 21 Rectification smoothing circuit 19 Drive stop circuit 20 1st signal transmission / reception Circuit 22 Second signal transmission / reception circuit 23a, 23b Signal transmission / reception winding 24 Key state detection circuit 26 Timer circuit 27 Drive unit (motor)
28 switching circuit 29 determination circuit 41 human body detection means 42 illumination means A, B electronic lock device

Claims (4)

A primary unit having a primary side of a coupling transformer is installed on the door frame side, and a secondary side unit having a secondary side of the coupling transformer configured to be separable from the primary side is installed on the door side. A power supply device that supplies power from the primary side unit to the secondary side unit in a non-contact manner by electromagnetic induction action of the coupling transformer, and a door that uses the power supplied to the secondary side unit by the power supply device. A control device that switches between locking and unlocking, and the control device transmits and receives signals to and from the primary side unit with a second signal transmission and reception circuit provided in the secondary unit. And a driving stop circuit that switches driving / stopping of the power supply device in accordance with the output of the first signal transmission / reception circuit, and a secondary unit from the first signal transmission / reception circuit to the second signal transmission / reception circuit. Power can be supplied to The secondary unit transmits and receives the second signal transmission / reception in a situation where the second signal transmission / reception circuit receives the confirmation signal from the first signal transmission / reception circuit. Based on the information signal input to the circuit, a signal indicating that power can be supplied to the secondary side unit is returned to the first signal transmission / reception circuit. When driving / stopping of the drive stop circuit is switched according to the presence / absence of a return signal from the signal transmission / reception circuit, and when the second signal transmission / reception circuit does not receive the confirmation signal from the first signal transmission / reception circuit The electronic lock device is configured not to transmit / receive any signal to / from the first signal transmitting / receiving circuit . The control device includes a key state detection circuit that outputs door unlocking / unlocking information to the second signal transmission / reception circuit, and a cipher input circuit for inputting an unlocking cipher, A determination circuit that determines whether the encryption input from the encryption input circuit is correct and outputs the result to the second signal transmission / reception circuit, and the second signal transmission / reception circuit receives the confirmation signal from the first signal transmission / reception circuit. When a signal indicating the unlocked state is input from the key state detection circuit, a predetermined time is measured. When the unlocked state continues for a predetermined time, power is automatically supplied from the primary unit to the secondary unit. 2. A timer circuit for preventing forgetting to lock by automatically locking , and a switching circuit for switching between locking and unlocking according to the output of the second signal transmission / reception circuit. Electronic locking device. The control device outputs the information signal to the second signal transmission / reception circuit when the timer circuit finishes measuring the predetermined time or when the unlocking encryption code input to the encryption input circuit is correct The electronic lock device according to claim 2, wherein the electronic lock device is configured as described above. The control device includes means for detecting a human body near the door and a light source that illuminates the keyhole of the door, and the second signal transmission / reception circuit receives the confirmation signal from the first signal transmission / reception circuit. When a signal indicating the locked state is output from the key state detecting circuit and a signal indicating that a human body is detected from the human body detecting means, a signal indicating the unlocked state is output from the key state detecting circuit. 4. The electronic lock device according to claim 2 or 3, wherein the light source is turned on until the first time .

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