JP2000320211A - Electronic lock system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lock an electronic lock surely and severely by simple constitution by providing a master key-like electronic lock system unlocking a specific key cover in a plurality of key covers capable of rejecting an access from the outside to a key hole by one or a plurality of electronic keys, and to provide the electronic lock system in which only a permitted person or group can unlock the key covers easily and an electronic-lock mechanism can be added easily to an existing locking device having no electronic-lock mechanism. SOLUTION: Feeder circuits for the control section and locking section of a key cover connected to an electromagnetic induction secondary coil is supplied with power by electrical coupling in a noncontact manner to the electromagnetic induction coil for the key cover from an electromagnetic induction primary coil by using a UL power supply, the ID information signal and unlocking signal of a specific key cover in a plurality of key covers capable of rejecting an access from the outside to a key hole are transmitted by an R/W terminal equipment, and the locking section is unlocked when ID information transmitted from the R/W terminal equipment coincides with ID information peculiar to the key cover stored in the control section of the key cover.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key cover provided in a locking device main body, which is removably provided with a key cover capable of denying external access to the key hole. The present invention relates to an electronic lock system for unlocking a specific lock.

[0002]

2. Description of the Related Art Various types of electronic locks have been proposed. For example, in the technique disclosed in Japanese Patent Application Laid-Open No. 9-132977, when an electronic key is inserted into the lock body, a coil is inserted from the electronic key into the lock body. A method has been proposed in which power is transmitted by electromagnetic coupling of the electronic key and data for identification and collation is transmitted from the electronic key to the lock body in a manner superimposed on the transmitted power.

[0003]

However, in the technique such as the above-mentioned known example, an electronic key and a lock body are generally configured one-to-one, and one electronic key is used for a plurality of lock bodies. Since it is not a so-called master key type electronic lock to be used, a large number of electronic keys are required as many as the number of individual doors provided with the lock body. Further, in the above-mentioned known example, each electronic key is equipped with a power supply for power supply. Therefore, there is a problem that the cost of the electronic key is high, and the storage and management are complicated.

In addition, there is a problem that the weight of the electronic key is increased because a coil for transmitting electric power and a DC power supply are built in the electronic key itself, and the electronic key is increased in size, which is inconvenient to carry.

Further, since the lock body directly acts on the locking structure of the locking device, the electronic lock itself has a complicated structure, and the electronic locking mechanism cannot be easily added to an existing locking device having no electronic locking mechanism. There was a problem.

[0006] The present invention is to solve the above-mentioned problems,
It is an object of the present invention to provide a master key-type electronic lock system that unlocks a specific one of a plurality of locks that can deny external access to a keyhole by one or more electronic keys. By doing so, it is possible to securely and strictly lock the electronic lock with a simple configuration, and only an authorized person or group can easily unlock the electronic lock, and the electronic lock mechanism is installed in an existing locking device that does not have an electronic lock mechanism. It is an object of the present invention to provide an electronic lock system that can be easily added and that can reduce the size and weight of the electronic key itself.

[0007]

According to the present invention, there is provided an electronic lock system for unlocking a specific lock among a plurality of locks using one or more electronic keys. An electronic key capable of transmitting the ID information signal of the key cover and an unlocking signal for unlocking the key cover, The locking section to be disengaged and the ID information unique to each key cover are stored, and the ID information signal and the unlock signal transmitted from the electronic key are received, and the ID information transmitted from the electronic key is received. A key having a control unit capable of unlocking the locking unit when the ID information matches the stored ID information unique to the key cover, and an electromagnetic induction secondary coil connected to a power supply circuit of the control unit and the locking unit. The cover and the electromagnetic induction secondary coil of the key cover are contactlessly Coupled to and having a locking power unit having an electromagnetic induction primary coil capable of supplying electric power to the electromagnetic induction secondary coil.

According to the above configuration, the electromagnetic induction primary coil is electromagnetically coupled to the electromagnetic induction secondary coil of the key cover in a non-contact manner using the locking power supply unit, and is connected to the electromagnetic induction secondary coil. Power to the power supply circuit of the control unit and the locking unit of the locked keypad, and among a plurality of keypads that can deny external access to the keyhole, the ID information signal and unlock signal of the specific keypad Is transmitted by the electronic key, and when the ID information transmitted from the electronic key matches the ID information unique to the key cover stored in the control unit of the key cover, the locking unit can be unlocked.

Therefore, when managing access to a keyhole of a large number of authorized persons or groups under various different conditions such as a keyhole of a predetermined area or section, or a type of a company accessing the keyhole, one or more keyholes are managed. An electronic lock system for unlocking a specific lock among a plurality of locks with a plurality of electronic keys can be easily configured.

In addition, since the power supply unit for locking can supply power to the control unit and the locking unit of the key cover from the outside of the key contact in a non-contact manner, the control unit of the key cover and the locking unit can be provided to the electronic key or the key cover itself. Since a power supply for supplying power to the unit is not required and the electronic key and the key cover can be reduced in size and weight, it can be applied to various small-diameter keyholes. Also,
Since the lock itself does not have a power supply, there is no problem even during a power failure.

[0011] In addition, by adopting a structure in which a key cover is attached to a keyhole of an existing locking device that has been conventionally used, an electronic lock system can be easily applied, so that a large design change is not required and it is economically preferable.

A DC power supply is connected to an electromagnetic induction primary coil provided in the locking power supply unit via an inverter, and DC power supplied from the DC power supply is converted into AC power by the inverter, and the electromagnetic power is converted to AC power by the inverter. An alternating magnetic field is generated in the induction primary coil, and electromagnetically coupled to the electromagnetic induction secondary coil provided on the key cover in a non-contact manner to supply power to the electromagnetic induction secondary coil. Therefore, even if the power supply unit for locking is constituted by a portable DC power supply, an alternating magnetic field can be generated in the electromagnetic induction primary coil via the inverter, and the electromagnetic induction secondary coil provided on the key lid is not affected. It is possible to supply power to the electromagnetic induction secondary coil by electromagnetically coupling by contact.

It is preferable that the DC power supply is composed of a dry cell power supply or a vehicle battery power supply because it is inexpensive and easily portable.

Another configuration of the electronic lock system according to the present invention is an electronic lock system for unlocking a specific one of a plurality of locks by one or a plurality of electronic keys. An electronic key capable of specifying the lock, transmitting an ID information signal of the lock, and an unlock signal for unlocking the lock, and a locking unit for engaging or disengaging the keyhole. , Storing ID information unique to each key cover, receiving the ID information signal and the unlock signal transmitted from the electronic key, and transmitting the ID information transmitted from the electronic key to store the stored ID information unique to the key cover. A control unit capable of unlocking the lock unit when the ID information matches, and a solar cell connected to a power supply circuit of the control unit and the lock unit and provided on an exposed surface of the key cover. And a key cover.

According to the above configuration, the electric power generated by the solar cell provided on the exposed surface of the key lid can be supplied to the control section and the locking section of the key lid. Therefore, the power supply unit for locking can be omitted.

Another configuration of the electronic lock system according to the present invention is an electronic lock system for unlocking a specific one of a plurality of locks by one or a plurality of electronic keys. An electronic key capable of specifying the lock, transmitting an ID information signal of the lock, and an unlock signal for unlocking the lock, and a locking unit for engaging or disengaging the keyhole. , Storing ID information unique to each key cover, receiving the ID information signal and the unlock signal transmitted from the electronic key, and transmitting the ID information transmitted from the electronic key to store the stored ID information unique to the key cover. A key cover having a control unit capable of unlocking the locking unit when the ID information is matched, and a power supply terminal capable of electrically connecting an external power supply to a power supply circuit of the control unit and the locking unit. It is characterized by the following.

According to the above configuration, an external power supply can be connected to a power supply terminal provided on the key lid to supply power to the control unit and the locking unit of the key lid, and power can be supplied with a simple configuration. The power supply unit for locking can be omitted.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of an electronic lock system according to the present invention will be specifically described with reference to the drawings. FIG. 1A is a cross-sectional explanatory view showing a state in which a key cover is inserted into a cap receiving member provided on an outer peripheral surface portion of a keyhole of a locking device main body in the first embodiment of the electronic lock system according to the present invention, FIG. b) is a cross-sectional explanatory view showing a state in which a lock is inserted and locked in a cap receiving member provided on the outer peripheral surface portion of the keyhole of the locking device main body in the first embodiment, and FIG. 2 is a control chip serving as a control unit and locking. Block diagram showing a configuration of a locking unit serving as a unit;
3 is a perspective explanatory view showing a configuration of an electromagnetic induction power supply serving as a locking power supply unit, FIG. 4 is a diagram showing a circuit configuration of the electromagnetic induction power supply serving as a locking power supply unit, and FIG. 5 is an electromagnetic induction serving as a locking power supply unit. FIG. 6 is a diagram showing a circuit configuration for receiving electric power from a power supply by electromagnetic induction, FIG. 6 is a diagram showing a state of performing ID identification by a non-contact reader / writer terminal serving as an individual key and an electronic key, and FIG. 6 is a flowchart showing the procedure of FIG.

1 (a) and 1 (b), reference numeral 1 denotes a locking device main body, and A denotes a keyhole 1 provided in the locking device main body 1.
a locking portion cap 2 which is provided detachably with respect to the key hole 1a and which can deny external access to the keyhole 1a, and a control chip 4 serving as a control portion provided inside the fitting portion 2a of the locking portion cap 2 And a key cover having a locking unit 5 serving as a locking unit.

Reference numeral 3 denotes a cap receiving member which is fixed to the outer peripheral surface of the keyhole 1a of the locking device main body 1 by bolting, welding, or the like, and receives the locking portion cap 2. At a substantially central portion of the cap receiving member 3, Is formed with a through-hole 3a having substantially the same cross-sectional shape as the keyhole 1a.

The locking portion cap 2 has a fitting portion 2a which is fitted into the through hole 3a of the cap receiving member 3 toward the key hole 1a.
And a flange portion 2b abutting on the surface of the cap receiving member 3. When the key cover A is fitted into the through hole 3a of the cap receiving member 3 toward the key hole 1a, the locking portion cap 2
Micro switch 12 provided at the tip of fitting portion 2a
Is pressed into contact with the surface of the lock 1b of the locking device main body 1 and is turned on by the micro switch 12, thereby detecting that the key cover A is attached to the locking device main body 1. ing.

A non-contact reader / writer terminal (hereinafter referred to as "R") serving as an electronic key, which will be described in detail later, is provided inside the fitting portion 2a.
/ W terminal ”), and receives an ID information signal unique to key cover A and an unlock signal for unlocking key cover A, which are transmitted from outside by means of a key lock A, and transmits A control chip 4 serving as a control unit for permitting opening and closing of the locking device when the unique ID information and the ID information transmitted from the R / W terminal 10 match, and a control signal transmitted from the control chip 4 A lock unit 5 serving as a lock unit for locking / unlocking the key cover A with respect to the keyhole 1a is built in (see FIG. 2).

The control chip 4 is formed by integrally packaging an IC (semiconductor integrated circuit) chip, an LSI (semiconductor large scale integrated circuit) chip, or the like. As shown in FIG.
An OM 4b and a RAM 4c are provided, and a solenoid driver 4d is connected to the CPU 4a. Further, there are provided a receiver 4e for receiving an ID information signal unique to the key cover A and an unlock signal transmitted from the outside, and a power storage unit 4f for receiving power from the outside and storing the power.

The CPU 4a is a central processing unit that reads out programs and various data from a ROM 4b, which will be described later, performs necessary calculations and judgments, and performs various controls. The CPU 4a is provided with a counter,
The time elapsed since the solenoid driver 4d was driven can be counted.

The ROM 4b is a read-only memory, and stores various programs for operating the CPU 4a and various data necessary for collating a password or encryption transmitted from outside. The ROM 4b has a key cover A
Is stored.

The RAM 4c is a random access memory. The CPU 4a has a working area for temporarily storing the data in the command and the operation result, a password transmitted from the outside, an encryption code, ID information unique to the key cover A, and the like. It is composed of a buffer area for storing data.

The RAM 4c temporarily stores the ID information signal transmitted from the R / W terminal 10, and stores the ID information signal and the RO information.
The unique ID information of the key cover A stored in the M4b and the CPU
When the two are coincident with each other, the lock unit 5 serving as a lock unit releases the engagement of the key cover A with the keyhole 1a.

The power storage unit 4f receives the power of the control chip 4 from the outside and temporarily stores the power every time the unlocking operation of the locking device is performed, and the electromagnetic induction is substantially the same as the power storage unit 5c of the locking unit 5. It is charged by the action.

The locking unit 5 includes a solenoid driver 4
An electromagnetic solenoid 5a, which is driven and controlled by d, and a pin 5b protruding or retracted by the electromagnetic solenoid 5a are provided. The electromagnetic solenoid 5a is required for driving by a power storage unit 5c which receives electric power from the outside and temporarily stores the electric power. Power is supplied. However, power storage unit 5c is not a device that stores power for a long time, and key cover A does not have a power source for locking / unlocking itself.

As shown in FIG. 1B, the pin 5b driven by the electromagnetic solenoid 5a protrudes radially outward of the fitting portion 2a of the locking portion cap 2 to protrude from the cap receiving member 3.
Is provided so as to be engageable with an engagement hole 3b which is an engagement portion provided in the radial direction on the side of the through hole 3a, and the electromagnetic solenoid 5a controls the pin 5b by a control signal sent from a solenoid driver 4d of the control chip 4. Protruding / retracting.

3 and 4, reference numeral 6 denotes a control chip 4
And an electromagnetic induction power supply (hereinafter referred to as “UL (UnLock) power supply”) serving as a locking power supply unit for supplying power to the power storage units 4f and 5c of the locking unit 5, and a plurality of dry batteries 6a are connected in series. The generated DC power is applied to an inverter 6c that converts DC power into AC power by pressing a power transfer button 6b, and the AC current output from the inverter 6c flows through the electromagnetic induction primary coil 6d to generate an alternating magnetic field. I do.

On the other hand, as shown in FIG. 5, the control chip 4 and the power storage units 4f and 5c of the locking unit 5 receive an electromotive force due to the electromagnetic induction effect of the alternating magnetic field generated in the electromagnetic induction primary coil 6d of the UL power supply 6. The electromagnetic induction secondary coil 7 that generates the electric current is provided so as to be electrically connected to the respective power supply circuits, and is converted from AC to DC by a rectifier 8 connected to the electromagnetic induction secondary coil 7, and includes a capacitor and the like. The electricity is stored in the storage device 9.

Accordingly, the electromagnetic induction primary coil 6d provided on the UL power supply 6 serving as the locking power supply unit is electromagnetically coupled to the electromagnetic induction secondary coil 7 provided on the key cover A in a non-contact manner. Electric power can be supplied to the electromagnetic induction secondary coil 7.

Reference numeral 9a denotes a display lamp which emits light when a predetermined amount of power required for operating the control chip 4 and the locking unit 5 in the battery 9 is stored. FIG. 5 shows the configuration of the power storage unit 5c of the locking unit 5;
The power storage unit 4f is configured in substantially the same manner.

FIGS. 6 and 7 are diagrams for explaining how to unlock the locking device using the R / W terminal 10 which is an electronic key for performing authentication and identification of a person or group who is permitted to unlock. It is. In the present embodiment, the R / W terminal 10 serving as one or a plurality of electronic keys is configured to unlock a specific lock A among a plurality of locks A. When a person or a group permitted to lock the door unlocks the specific lock A, the unlocker operates the R / W terminal 1 shown in FIG.
0, carry the personal identification tag 11 and the UL power source 6 and approach the target locking device.

In the state where the locking device is locked, FIG.
As shown in (b), the key cover A is the keyhole 1a of the locking device body 1.
When the pin 5b is attached to the cap receiving member 3 fixed to the outer peripheral surface of the
And is locked in a state of protruding from the lock.

The unlocker first places the UL power supply 6 shown in FIGS. 3 and 4 on the key cover A attached to the locking device body 1 and holds the power transfer button 6a for about 10 seconds. Push to control chip 4 and locking unit 5 from UL power supply 6
Is transferred to the power storage units 4f and 5c (step S1 in FIG. 7). Then, after confirming that the power is sufficiently stored by turning on the display lamp 9a, the power transfer button 6a is released.

Next, the personal identification tag 11 of the unlocker is set to R / W.
It is inserted into a tag slot (not shown) of the terminal device 10 (step S2 in FIG. 7), and a four-digit password, encryption and unique ID information of the target key cover A are entered (step S2 in FIG. 7).
3). At this time, the R / W terminal 10 allows the input of the personal identification number, the encryption and the ID information up to six times, and if the answer is incorrect six consecutive times, the display 10a of the R / W terminal 10 displays ""Accessdenied" is displayed and the personal identification tag 11 is displayed.
The self freezes (step S10 in FIG. 7), and the personal identification tag 11
Unable to be used until reset at the issuing center that manages the issuance of.

In step S4 of FIG. 7, if the answer is less than six times, the R / W terminal 10 checks the password, the encryption and the ID information and displays "PIN" and "PIN" on the display 10a. And "ID information confirmation" are displayed, and in step S5 in FIG. 7, whether or not access to the keyhole 1a of the locking device is determined based on the authentication content read from the personal identification tag 11.

If it is determined in step S5 in FIG. 7 that access is denied, the access is denied (step S11 in FIG. 7), and a message “access denied” is displayed on the display 10a of the R / W terminal 10.

In step S5, when it is determined that the access is permitted, the ID information signal unique to the key cover A, the unlock command, and the personal authentication code are released from the R / W terminal 10 to the control chip 4. It is transmitted as a lock signal (step S6 in FIG. 7).

The ID sent from the R / W terminal 10
The control chip 4, which has received the information signal and the unlock signal by the receiver 4e, temporarily stores the ID information signal and the unlock signal in the RAM.
4c and stored in the CPU 4a in step S7 of FIG.
Is compared with an ID information signal and an unlock signal which permit access previously stored in the ROM 4b, and when it is determined that the signal is an ID information signal and an unlock signal from a person or group permitted to access, the solenoid driver 4d, the electromagnetic solenoid 5a is turned on by the electric power stored in the power storage unit 5c, the pin 5b is pulled in, and the locking unit 5
Is unlocked (step S8 in FIG. 7). At this time,
The engagement between the pin 5b and the engagement hole 3b of the cap receiving member 3 is released, and the key cover A is ready to be detached from the cap receiving member 3.

Then, the unlocker pulls out the key cover A from the cap receiving member 3 and detaches it, and inserts a key (not shown) into the keyhole 1a to unlock the lock 1b (step S9 in FIG. 7).

In step S7, the R / W terminal
ID information signal and unlock signal sent from 10 and ROM
If the collation with the ID information signal permitting access stored in 4b and the unlock signal does not match, the access is rejected (step S12 in FIG. 7).

In step S8, the time during which the electromagnetic solenoid 5a pulls the pin 5b to unlock the locking unit 5 is set to about 10 seconds.
If the key cover A is not pulled out of the cap receiving member 3 within 0 seconds, the CPU 4a controls the solenoid driver 4d to turn off the electromagnetic solenoid 5a, and the pin 5b projects again to engage the engaging hole 3b of the cap receiving member 3. Engage, key cover A
Is locked to the cap receiving member 3.

When the locking device is to be locked, the fitting portion 2a of the locking portion cap 2 is dropped into the through hole 3a of the cap receiving member 3 toward the key hole 1a and inserted.
The micro switch 12 provided at the tip of the fitting portion 2a
Is pressed into contact with the surface of the lock 1b, and the micro switch 12 is turned on. Upon receiving this detection information, the CPU 4a controls the solenoid driver 4d to turn off the electromagnetic solenoid 5a of the locking unit 5 and to release the pin 5b. Is engaged with the engaging hole 3b of the cap receiving member 3 to lock the key cover A with respect to the locking device body 1.

The operating power of the locking unit 5 at this time is the power temporarily charged in the power storage unit 5c in the previous operation by the above-described method. In this locking work, R / W terminal
10. No personal identification tag 11 is required.

According to the above-described configuration, a specific key cover A among a plurality of key covers A that can deny external access to the keyhole 1a by the R / W terminal 10 serving as one or a plurality of electronic keys. It is possible to construct an electronic lock system like a master key that unlocks the electronic lock, so that the electronic lock can be securely and strictly locked with a simple configuration, and only an authorized person or group can easily unlock the electronic lock. An electronic lock mechanism can be easily added to an existing locking device having no electronic lock mechanism, and the electronic key itself can be reduced in size and weight.

That is, by using the UL power supply 6 serving as a locking power supply unit, the electromagnetic induction primary coil 6d is electromagnetically coupled to the electromagnetic induction secondary coil 7 of the key cover A in a non-contact manner, and the electromagnetic induction secondary coil is used. A plurality of keys capable of supplying power to the control chip 4 serving as a control unit of the key cover A connected to the coil 7 and the power supply circuit of the locking unit 5 serving as the locking unit and rejecting external access to the keyhole 1a. Of the lid A, I of the specific key lid A
R / W terminal that uses D information signal and unlock signal as electronic key
ID transmitted from the R / W terminal 10
If the information matches the unique ID information of the key cover A stored in the ROM 4b of the control chip 10 of the key cover A, the lock unit 5
Can be unlocked.

Accordingly, a large number of authorized persons or groups can access the keyhole 1a under various different conditions, such as the keyhole 1a of the locking device in a predetermined area or section, or the type of trader accessing the keyhole 1a. At the time of management, an electronic lock system for unlocking a specific lock A among a plurality of locks A by one or a plurality of R / W terminals 10 can be easily constructed.

Further, power is supplied from the outside of the key cover A to the control chip 4 serving as a control unit of the key cover A and the locking unit 5 serving as a locking unit from the outside of the key cover A by a UL power supply 6 serving as a locking power supply unit. Therefore, a power supply for supplying power to the R / W terminal device 10 serving as an electronic key, the control chip 4 serving as a control unit for the key cover A itself, and the locking unit 5 serving as a locking unit is not required. Since the terminal 10 and the key cover A can be reduced in size and weight, they can be applied to various small-diameter keyholes 1a. Further, since the key cover A itself does not have a power source, there is no problem even at the time of a power failure.

In addition, by adopting a structure in which the key cover A is attached to the keyhole 1a of an existing locking device which has been conventionally used, the electronic lock system can be easily applied, so that a large design change is not required and it is economically preferable. .

An inverter 6 is connected to an electromagnetic induction primary coil 6d provided in the UL power supply 6 serving as a locking power supply unit.
A dry battery 6a serving as a DC power supply is connected via the power supply c. The DC power supplied from the dry battery 6a is converted into AC power by the inverter 6c to generate an alternating magnetic field in the electromagnetic induction primary coil 6d. The configuration is such that the electromagnetic induction secondary coil 7 is electromagnetically coupled to the provided electromagnetic induction secondary coil 7 in a non-contact manner so as to supply power to the electromagnetic induction secondary coil 7, thereby achieving UL.
Even if the power source 6 is composed of a portable dry battery 6a, an alternating magnetic field can be generated in the electromagnetic induction primary coil 6d via the inverter 6c, and the electromagnetic field is not applied to the electromagnetic induction secondary coil 7 provided on the key cover A. Power can be supplied to the electromagnetic induction secondary coil 7 by electromagnetic coupling through contact.

The UL power supply 6 serving as a power supply unit for locking
The DC power source may be a vehicle battery power source in addition to the dry cell 6a. It is preferable to use such a DC power source for a locking power supply unit because it is inexpensive and easily portable.

In the apparatus of this embodiment, the control chip 4 is a CPU.
4a and the ROM 4b, it is possible to register different persons or groups who are permitted access for each locking device.

That is, for example, only the group x can access the locking device x, and only the group y can access the locking device y.
Further, it is possible to make a setting such that both the groups x and y can access the locking device z.

In the above-described embodiment, the case where the engaging portion with which the pin 5b of the locking unit 5 is engaged is constituted by the engaging hole 3b provided in the cap receiving member 3 has been described. It is also possible to provide a protruding portion protruding radially inward of the through hole 3a of the receiving member 3, so that the pin 5b abuts and engages the rear surface of the protruding portion.

Next, a second embodiment of the electronic lock system according to the present invention will be described with reference to FIG. FIG. 8A is a cross-sectional explanatory view showing a state in which a key cover is inserted into a keyhole of a locking device main body in the second embodiment of the electronic lock system according to the present invention, and FIG. 8B is a locking device in the second embodiment. It is sectional explanatory drawing which shows the mode that the key cover was inserted in the keyhole of the main body, and was locked. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

In the first embodiment, the cap receiving member 3 is fixed to the outer peripheral surface of the keyhole 1a of the locking device main body 1 as shown in FIG. 1, but in the present embodiment, the cap receiving member 3 is omitted. And lock the key cover A directly to the locking device body 1
In the keyhole 1a.

8 (a) and 8 (b), on the surface of the keyhole 1a of the locking device main body 1, there is provided a projection 1c serving as an engaging portion projecting radially inward of the keyhole 1a. The fitting portion 2a of the locking portion cap 2 is inserted into the keyhole 1a through the space between the projecting portions 1c, and the flange portion 2b of the locking portion cap 2 is formed.
Is brought into contact with the surface of the locking device main body 1 and the key cover A is mounted.

The pin 5b of the locking unit 5 protrudes radially outward of the fitting portion 2a and abuts on the rear surface of the protruding portion 1c to lock the key cover A in the keyhole 1a of the locking device body 1. ing.

In the present embodiment, the key cover A can be easily formed simply by providing a projection 1c protruding radially inward of the keyhole 1a above the keyhole 1a of an existing locking device conventionally used.
Since it is possible to adopt a structure for mounting the radiator, a large design change is not required, which is economically preferable.

The other configuration is the same as that of the first embodiment, and the same effects can be obtained.

Next, third and fourth embodiments of the electronic lock system according to the present invention will be described with reference to FIGS. 9 and 10. FIG.
FIG. 9A is a cross-sectional explanatory view showing a state in which a key cover is inserted into a cap receiving member provided on an outer peripheral surface portion of a keyhole of a locking device main body in the third embodiment of the electronic lock system according to the present invention, and FIG. FIG. 10B is a cross-sectional explanatory view showing a state in which a lock is inserted into a cap receiving member provided on the outer peripheral surface portion of the keyhole of the locking device body in the third embodiment and locking is performed, and FIG. 10A is an electronic device according to the present invention. FIG. 10B is a cross-sectional explanatory view showing a state where a key cover is inserted into a keyhole of a locking device main body in the fourth embodiment of the locking system. FIG. It is sectional explanatory drawing which shows the mode that it did. The same components as those in the first and second embodiments are denoted by the same reference numerals, and description thereof is omitted.

In the third embodiment shown in FIGS. 9 (a) and 9 (b) and the fourth embodiment shown in FIGS. 10 (a) and 10 (b), the pin 5b of the locking unit 5 is made of an elastic member such as a spring (not shown). Is always urged in the protruding direction.

In the third embodiment shown in FIGS. 9A and 9B, the surface of the through hole 3a of the cap receiving member 3 of the first embodiment shown in FIGS. A tapered surface 3c is formed so that the pin 5b urged in the protruding direction abuts and slides to draw the pin 5b against the urging force of the elastic member.

When the fitting portion 2a of the locking portion cap 2 is inserted into the through hole 3a of the cap receiving member 3, the pin 5
b comes into contact with the tapered surface 3c formed on the upper portion of the through hole 3a, slides in, and is pulled in against the urging force of the elastic member.
When the pin 5b reaches the position of the engaging hole 3b of the cap receiving member 3, the pin 5b protrudes by the urging force of the elastic member and engages with the engaging hole 3b, and the locking portion cap 2 locks the locking device main body 1. The keyhole 1a is locked.

In the fourth embodiment shown in FIGS. 10 (a) and 10 (b), the surface of the keyhole 1a of the locking device body 1 of the second embodiment shown in FIGS. A pin 5b urged in a projecting direction is always in contact with the pin 5b, and a tapered surface 1d is formed to draw the pin 5b against the urging force of the elastic member.

When the fitting portion 2a of the locking cap 2 is inserted into the keyhole 1a of the locking device main body 1, the pin 5b comes into contact with and slides on the tapered surface 1d formed above the keyhole 1a of the locking device main body 1. The pin 5b is pulled in against the urging force of the elastic member, and the pin 5b projects above the keyhole 1a.
c, the pin 5b projects by the urging force of the elastic member and abuts and engages with the back surface of the protruding portion 1c, so that the locking portion cap 2 engages with the keyhole 1a of the locking device body 1. It is designed to be locked.

According to the above configuration, the pin 5b is always urged in the protruding direction, is brought into contact with the tapered surfaces 3c, 1d and slides in, and is pulled into the position where the pin 5b reaches the engagement hole 3b or the protrusion. 1c, the pin 5b engages with the engagement hole 3b and the projection 1c to mechanically interlock with the operation of attaching the key cover A to the keyhole 1a of the locking device main body 1. Since the lid A is locked to the keyhole 1a of the locking device main body 1, it is sufficient to drive the electromagnetic solenoid 5a to retract the pin 5b only when the pin 5b is retracted, which is necessary in the first and second embodiments. The micro switch 12 is omitted and the power supply for locking is not required.
Control can be simplified. Other configurations are configured in the same manner as the above embodiments, and the same effects can be obtained.

Next, a fifth embodiment of the electronic lock system according to the present invention will be described with reference to FIGS. FIG.
FIG. 11A is a cross-sectional explanatory view showing a state in which a lock is inserted into a keyhole of a locking device main body in a fifth embodiment of the electronic lock system according to the present invention, and FIG. 11B is a sectional view of the locking device main body in the fifth embodiment. FIG. 12 is a cross-sectional explanatory view showing a state where a key cover is inserted into a keyhole and locked, and FIG. In addition, components configured in the same manner as the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted.

In the second embodiment shown in FIG.
Is inserted into the keyhole 1a of the locking device body 1, the key cover A
11b is configured to protrude from the upper surface of the locking device main body 1, but in the present embodiment, as shown in FIGS. 11A and 11B, the flange 2b of the key cover A is omitted. When the key cover A is inserted into the keyhole 1a of the locking device main body 1, the upper surface of the key cover A and the upper surface of the keyhole 1a are substantially flush with each other. Then, the power of the control chip 4 and the locking unit 5 is changed to a non-contact U
Although the power is transferred by the L power source 6 and stored in the power storage units 4f and 5c, in this embodiment, as shown in FIG.
Power supply circuit.

As shown in FIGS. 11 (a) and 11 (b),
Is entirely inserted into the keyhole 1a of the locking device main body 1. When the key cover A is inserted into the keyhole 1a of the locking device main body 1, the upper surface of the key cover A and the keyhole 1a are inserted. Is formed so that the upper surface thereof is substantially flush with the upper surface.

On the surface of the keyhole 1a, there is provided a projection 1c serving as an engagement portion projecting radially inward of the keyhole 1a, and the locking portion cap 2 is passed between the projections 1c to form the keyhole 1a. The key cover A is attached by being inserted into the.

The pin 5b of the locking unit 5 projects radially outward of the key cover A and abuts on and engages with the back surface of the protruding portion 1c so that the key cover A is locked in the keyhole 1a of the locking device body 1. ing.

A power supply terminal 21 connected to a protection circuit 22 shown in FIG. 12 is built in the key cover A so that the front end of the key cover A is exposed. It is connected to the.

The output side of the protection circuit 22 is connected to the power supply circuit of the control chip 4 and the locking unit 5, and is connected to a power storage unit 23 composed of a common capacitor and the like connected to the control chip 4 and the locking unit 5, respectively. ing.

Then, the power supply terminal provided on the R / W terminal 10 or another external power supply terminal is brought into contact with the power supply terminal 21 and the locking device main body 1 via the protection circuit 22 to control the control chip 4, the locking unit 5, and the like. The power can be supplied to the power storage unit 23, and the control chip 4 and the locking unit 5 can be operated by the power charged in the power storage unit 23 even after the power supply terminal is disconnected.

The other structure is the same as that of each of the above-described embodiments, and can obtain the same effect. In the key cover A of each of the above-described embodiments, a control unit is used instead of the electromagnetic induction secondary coil 7 and the like. Power supply terminal 21 electrically connected to the power supply circuit of the control chip 4 serving as a locking unit and the locking unit 5 serving as a locking unit.
And an external power supply may be electrically connected to the power supply terminal to supply power.

According to the above configuration, an external power supply is connected to the power supply terminal 21 provided on the key cover A to supply power to the control chip 4 serving as a control unit of the key cover A and the locking unit 5 serving as a locking unit. Power can be supplied with a simple configuration, and the UL power supply 6 serving as a locking power supply unit can be omitted.

Next, a sixth embodiment of the electronic lock system according to the present invention will be described with reference to FIGS. FIG.
FIG. 13A is an explanatory cross-sectional view showing a state in which a lock is inserted into a keyhole of a locking device main body in the sixth embodiment of the electronic lock system according to the present invention. FIG. 13B is a sectional view of the locking device main body in the sixth embodiment. FIG. 14 is an explanatory sectional view showing a state in which a key cover is inserted into a keyhole and locked, and FIG. 14 is a block diagram of a power supply circuit according to a sixth embodiment. In addition, components configured in the same manner as the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted.

In this embodiment, a solar cell 31 is disposed on the exposed surface of the key cover A of the first embodiment shown in FIG. 1 and described above, and the output terminals of the solar cell 31 are shown in FIG. This is connected to the protection circuit 22 of the fifth embodiment described above. The output side of the protection circuit 22 is connected to a power supply circuit of the control chip 4 and the locking unit 5, and is also connected to a power storage unit 23 including a common capacitor and the like connected to the control chip 4 and the locking unit 5, respectively.

The other structure is the same as that of each of the above embodiments, and can obtain the same effect. In the key cover A of each of the above embodiments, the electromagnetic induction secondary coil 7 and the power supply terminal 21 are provided. Instead, a control chip 4 serving as a control unit and a solar cell 31 electrically connected to a power supply circuit of a locking unit 5 serving as a locking unit are provided on the exposed surface portion of the key cover A to supply power by itself. You may.

According to the above configuration, the electric power generated by the solar cell 31 provided on the exposed surface of the key cover A is
Can be supplied to the control chip 4 serving as a control unit and the locking unit 5 serving as a locking unit. Since the power supply is self-sufficient, it is economical, and the UL power supply 6 serving as a locking power supply unit can be omitted.

Next, a case where the above-mentioned electronic lock system is constructed using a keyhole A detachably attached to a manhole cover (including a handhole cover) or a keyhole 1a of a door will be described with reference to FIGS. .

In recent years, with the advancement of road functions, the number of road occupied properties such as water and sewage, electric power, telephone, telecommunications, and gas, and management-related facilities, etc., have increased, and management information has been diversified. The information collection and the operation when performing such operations are complicated, complicated, and inefficient. For this reason, at present, construction and the like cannot be performed unless a plurality of maps, records, and the like of each road private property manager are collected and decoded.

Accordingly, recently, a road management system using computer mapping is being promoted. An IC chip storing management data of roads, management facilities for the roads, and buried and housed property for road occupation is attached to a manhole cover, and the road is managed. A technique has been proposed in which a manager or a site builder reads the information with a non-contact reader in a management operation, thereby realizing speedy and accurate patrol, and efficiency of investigation, construction, witness and the like in site construction.

FIG. 15 shows an example in which the electronic lock system according to the present invention is applied to a locking system for a plurality of manhole covers.
FIG. 16A is a cross-sectional explanatory view showing an example of a double manhole cover in which a key cover A is applied to an inner cover of a manhole cover, FIG. 16A is a perspective view showing an example of a key of a locking device for a manhole cover, and FIG. ,
(C) is a schematic plan view showing how the arm of the locking portion of the locking device for the manhole cover is rotated to open and close.

FIG. 17 is an explanatory cross-sectional view showing an example in which the key cover A of the electronic lock system according to the present invention is applied to a single manhole cover, and FIG. 18 opens and closes the arm of the locking section of the manhole cover locking device. 19A is a cross-sectional view showing the structure of a rotating-open manhole cover, and FIG. 19B is a sectional explanatory view showing the structure of a rotating-open manhole cover. FIG. 20 is an explanatory plan view showing the configuration of the lid, and FIG. 20 is a diagram showing a specific example of ID information.

FIGS. 15 to 19 show the configuration of a manhole cover (including a handhole cover) provided in a manhole (including a handhole) serving as an opening through an underground object, an underground structure facility, and the ground. FIG. 15 shows an example of a double manhole cover including an inner cover and an outer cover, and FIGS. 17 and 19 show examples of a single manhole cover with only an outer cover.

In FIG. 15, the manhole inner cover 43 is supported by the inner cover receiving portion 42a of the cover receiving frame 42 laid almost flush with the ground surface of the ground 41, and the manhole is further supported by the outer cover receiving portion 42b of the cover receiving frame 42. An outer lid 44 is supported. In FIG. 17, a manhole cover 45 is supported by a cover receiving frame 42 laid almost flush with the ground surface of the ground 41.

The manhole inner cover 43 shown in FIG. 15 is provided with locking means for mechanically engaging and locking the manhole inner cover 43 with the cover receiving frame 42.
16 (b) and 16 (c), the cover opening handle shown in FIG. 16 (a) is inserted into the keyhole 1a of the locking device body 1 provided at the center of the manhole inner cover 43 as shown in FIGS. key
By inserting the key 46 and rotating the key 46, an arm 43b provided rotatably about a hinge 43a provided on the outer periphery of the locking device main body 1 is rotated while rotating about the hinge 43a. An arm guide 43 provided on the manhole inner cover 43 rotates about the locking device body 1 integrally with the hinge portion 43a.
c, the locking position where the arm 43b is brought into contact with and engaged with the lower surface of the inner lid receiving portion 42a, and the locking device is located at the center of the manhole inner lid 43 more than the inner lid receiving portion 42a. The lock position is set to the unlock position retracted to the main body 1 side.

Further, at least a substantially central portion of the manhole outer cover 44 and a portion 44a of the manhole inner cover 43 corresponding to the upper part of the locking device body 1 are made of a non-magnetic stainless steel material. There is no problem in the transfer of electric power using the electromagnetic induction effect of the above.

The handle key 46 for opening the cover shown in FIG. 16 (a) has the keyhole 1a of the locking device main body 1 provided at the center of the manhole inner cover 43 when the handle portion 46a is folded around the rotation shaft 46b. The protrusion 46d is housed inside the key portion 46c inserted into the key portion 46c. When the handle portion 46a is rotated about the rotation shaft 46b and expanded as shown in FIG. The protrusion 43d protrudes from the lock device main body 1 and engages with an engaging portion (not shown) of the locking device main body 1. By rotating the handle portion 46a about the shaft 46e, the arm 43b is moved to the position shown in FIG.
The manhole inner cover 43 can be locked / unlocked by rotating as shown in FIG.

On the other hand, the manhole cover 45 shown in FIG. 17 is also provided with locking means for mechanically engaging and locking the manhole cover 45 with the cover receiving frame 42.
A cover opening handle key (not shown) is inserted into a key hole 1a of the locking device main body 1 provided at the center of the lock device main body 1 and is engaged with an engagement hole 47b of a rotary disk 47 shown in FIG. By rotating the key, the arm is fitted into the spiral groove 47a formed in the rotating disk 47 on the outer periphery of the locking device main body 1, and is fixed to a support shaft 48a movable along the spiral groove 47a. The arm guide 45 provided on the manhole cover 45 moves as the 48 moves along the spiral groove 47a with the rotation of the turntable 47.
a, the locking position where the arm 48 is engaged with and engaged with the lower surface of the engaging portion 42c of the lid receiving frame 42 and is locked at the center of the manhole lid 45 relative to the lid receiving frame 42. The unlock position is set to the retracted position to the side.

The manhole cover 45 shown in FIGS. 19A and 19B is pivotally opened with respect to the cover receiving frame 42 by a hinge portion 45b provided at the outer peripheral end of the manhole cover 45. At the outer peripheral end of the manhole cover 45 on the side opposite to the hinge portion 45b, a locking claw 45c to be locked to an engaging portion (not shown) of the cover receiving frame 42 is provided.

The locking claw 45c is engaged with an engaging portion (not shown) of the lid receiving frame 42 in conjunction with the operation of closing the manhole cover 45, and the manhole cover 45 is locked to be locked. When opening the manhole cover 45, an unlocking tool (not shown) is inserted into a keyhole 1a provided at a position corresponding to the locking claw 45c of the manhole cover 45, and the locking claw 45c is shown in the cover receiving frame 42. The manhole cover 45 is opened by retreating from the engaging portion not to be unlocked.

The manhole cover 43 shown in FIG. 15, FIG. 17 and FIG.
The keyhole A is inserted and locked in the keyhole 1a provided in the manhole cover 45 shown in FIG.
Is configured to be able to deny access from outside.

Here, the manhole cover includes a large-sized iron cover for opening and closing an opening through an underground buried object in a sewer, an underground structure facility, and the ground, a sewage basin cover, and underground facility equipment in electric power and communication. Opening / closing iron cover for open / closed gutters, power transmission iron cover, power distribution iron cover, underground pipes for water supply and gas piping, and the auxiliary doors that connect auxiliary equipment and the ground to the ground Fire hydrant lid,
It is applicable as a water control valve cover, a partition valve cover, an air valve cover, a gas pipe cover, a water meter cover, and the like.

In the present embodiment, as the unique ID information of the key cover A detachably attached to the keyhole 1a of each of the manhole covers provided in a plurality of predetermined regions and sections, as shown in FIG.
As shown in FIG. 20, the section code number of the district or area where the manhole cover is provided, the series number of the manhole cover provided in a specific section, and the R / W terminal 10 are set.
The information is collated by inputting and transmitting the ID information and the trader number of each trader permitted to access the keyhole 1a and the personal code number of the permitted person or group, and the access is permitted. .

Thus, the R / W terminal 10 serving as one or a plurality of electronic keys allows a plurality of keyholes 1 in a plurality of manhole covers.
Only the person who knows the specific ID information of the specific lock A among the locks A attached to the a can access the keyhole 1a provided in the specific manhole cover. An electronic lock that can easily manage access to the keyhole 1a of a specific manhole cover of a large number of authorized persons or groups under various different conditions for each type of business such as construction, maintenance, inspection, meter reading, etc. It is possible to build a system.

FIG. 21 is a perspective view showing an example in which the electronic lock system according to the present invention is applied to a system for locking a plurality of doors. In FIG. 21, a keyhole 1a is provided on the surface of a door knob 52 connected to the locking device main body 1 of the door 51, and a key cover A is attached to the keyhole 1a.

In the present embodiment, a key cover that is detachably attached to a plurality of key holes 1a of a plurality of doors 51 in each room of a hotel, an apartment, an office building, or the like, which is constructed in a predetermined area or section. As the unique ID information of A, similarly to the case shown in FIG. 20, the area code number assigned according to the district or ridge where the target door 51 is arranged, the number of floors, etc., and the series number of the door 51 arranged in a specific area. Is set and R
The ID information from the / W terminal 10 and the number of each company that performs security, cleaning, delivery, maintenance, inspection, construction, etc., which are permitted to access the keyhole 1a, and the authorized person or group. By entering and sending a personal code number, it is verified and access is granted.

As a result, a specific one of the locks A among the locks A attached to the keyholes 1a of the plurality of doors 51 by the R / W terminal 10 serving as one or a plurality of electronic keys is provided.
Only the person who knows the unique ID information can access the keyhole 1a provided in the specific door 51, and various types of security such as security, cleaning, delivery, maintenance, inspection, construction, etc. It is possible to construct an electronic lock system that can easily manage access to the keyhole 1a of a specific door 51 of a large number of authorized persons or groups under different conditions.

[0105]

Since the present invention has the above-described structure and operation, it is possible to prevent external access to the keyhole by one or more electronic keys.
By providing a master key-like electronic lock system that unlocks a specific key cover, it is possible to securely and strictly lock the electronic lock with a simple configuration, and only an authorized person or group can easily unlock it. It is possible to construct an electronic lock system that can easily add an electronic lock mechanism to an existing locking device that does not have an electronic lock mechanism and that can reduce the size and weight of the electronic key itself.

That is, using the power supply unit for locking, the electromagnetic induction primary coil is electromagnetically coupled to the electromagnetic induction secondary coil of the key cover in a non-contact manner, and the key cover connected to the electromagnetic induction secondary coil is not contacted. The power supply circuit of the control unit and the locking unit is supplied with power, and the ID information signal and the unlock signal of the specific key cover among the plurality of key covers that can deny external access to the keyhole are transmitted by the electronic key. Outgoing and I sent from the electronic key
When the D information matches the ID information unique to the lock stored in the control unit of the lock, the locking unit can be unlocked.

Therefore, when managing access to a keyhole of a large number of authorized persons or groups under various different conditions such as a keyhole of a predetermined area or section, or a type of a company accessing the keyhole, one or more keyholes are managed. An electronic lock system for unlocking a specific lock among a plurality of locks with a plurality of electronic keys can be easily configured.

Further, since the power supply unit for locking can supply power to the control unit and the locking unit of the key cover in a non-contact manner from the outside of the key cover, the control unit of the key cover and the locking unit can be supplied to the electronic key or the key cover itself. Since a power supply for supplying power to the unit is not required and the electronic key and the key cover can be reduced in size and weight, it can be applied to various small-diameter keyholes. Also,
The lock itself does not have a power source, so there is no problem even during a power outage.

Further, by adopting a structure in which a key cover is attached to a keyhole of an existing locking device which has been conventionally used, an electronic lock system can be easily applied, so that a large design change is not required and it is economically preferable.

A DC power supply is connected via an inverter to an electromagnetic induction primary coil provided in the locking power supply unit, and the DC power supplied from the DC power supply is converted into AC power by the inverter to convert the DC power into AC power. If the coil is configured to generate an alternating magnetic field and electromagnetically couple to the electromagnetic induction secondary coil provided on the key cover in a non-contact manner to supply power to the electromagnetic induction secondary coil, locking Even if the power supply unit is composed of a portable DC power supply, an alternating magnetic field can be generated in the electromagnetic induction primary coil via the inverter, and the electromagnetic induction secondary coil provided on the key lid is contactless Power can be supplied to the electromagnetic induction secondary coil.

It is preferable that the DC power supply is composed of a dry cell power supply or a vehicle battery power supply because it is inexpensive and easily portable.

When the electric power generated by the solar cell provided on the exposed surface of the key cover is supplied to the control unit and the locking unit of the key cover, it is economical because it is a self-sufficient power type, and it is economical. Power supply unit can be omitted.

Further, when an external power supply is connected to a power supply terminal provided on the key cover to supply power to the control unit and the locking unit of the key cover, power can be supplied with a simple configuration.
The power supply unit for locking can be omitted.

[Brief description of the drawings]

FIG. 1A is a cross-sectional explanatory view showing a state in which a key cover is inserted into a cap receiving member provided on an outer peripheral surface portion of a keyhole of a locking device main body in a first embodiment of an electronic lock system according to the present invention; b) is a cross-sectional explanatory view showing a state in which the lock is inserted and locked in the cap receiving member provided on the outer peripheral surface of the keyhole of the locking device main body in the first embodiment.

FIG. 2 is a block diagram illustrating a configuration of a control chip serving as a control unit and a locking unit serving as a locking unit.

FIG. 3 is an explanatory perspective view showing a configuration of an electromagnetic induction power supply serving as a power supply unit for locking.

FIG. 4 is a diagram showing a circuit configuration of an electromagnetic induction power supply serving as a locking power supply unit.

FIG. 5 is a diagram showing a circuit configuration for receiving electric power by electromagnetic induction from an electromagnetic induction power supply serving as a locking power supply unit.

FIG. 6 is a diagram showing how ID identification is performed by a personal identification means and a non-contact reader / writer terminal serving as an electronic key.

FIG. 7 is a flowchart showing a procedure of unlocking.

FIG. 8A is a cross-sectional explanatory view showing a state in which a key cover is inserted into a keyhole of a locking device main body in a second embodiment of the electronic lock system according to the present invention, and FIG. 8B is a locking device in the second embodiment. It is sectional explanatory drawing which shows the mode that the key cover was inserted in the keyhole of the main body, and was locked.

FIG. 9A is a cross-sectional explanatory view showing a state in which a key cover is inserted into a cap receiving member provided on an outer peripheral surface portion of a keyhole of a locking device main body in a third embodiment of an electronic lock system according to the present invention; b) is a cross-sectional explanatory view showing a state in which a lock is inserted and locked in a cap receiving member provided on an outer peripheral surface portion of a keyhole of a locking device main body in the third embodiment.

10A is a cross-sectional explanatory view showing a state in which a key cap is inserted into a keyhole of a locking device main body in a fourth embodiment of the electronic lock system according to the present invention, and FIG. 10B is a locking device in the fourth embodiment. It is sectional explanatory drawing which shows the mode that the key cover was inserted in the keyhole of the main body, and was locked.

FIG. 11A is an explanatory cross-sectional view illustrating a state in which a key cover is inserted into a keyhole of a locking device main body in a fifth embodiment of the electronic lock system according to the present invention, and FIG. 11B is a cross-sectional view illustrating the locking device in the fifth embodiment. It is sectional explanatory drawing which shows the mode that the key cover was inserted in the keyhole of the main body, and was locked.

FIG. 12 is a block diagram of a power supply circuit according to a fifth embodiment.

13A is an explanatory cross-sectional view showing a state in which a key cap is inserted into a keyhole of a locking device main body in a sixth embodiment of an electronic lock system according to the present invention, and FIG. 13B is a locking device in the sixth embodiment. It is sectional explanatory drawing which shows the mode that the key cover was inserted in the keyhole of the main body, and was locked.

FIG. 14 is a block diagram of a power supply circuit according to a sixth embodiment.

FIG. 15 is an example in which the electronic lock system according to the present invention is applied to a locking system of a plurality of manhole covers, and is a cross-sectional explanatory view illustrating an example of a double manhole cover in which a lock is applied to an inner cover of the manhole cover. is there.

16A is a perspective view illustrating an example of a key of a locking device for a manhole cover, and FIGS. 16B and 16C illustrate a state in which an arm of a locking unit of the locking device for a manhole cover is opened and closed. FIG. It is a plane schematic diagram.

FIG. 17 is an explanatory cross-sectional view showing an example in which the key cover of the electronic lock system according to the present invention is applied to a single manhole cover.

FIG. 18 is a diagram showing a configuration of a turntable in which a spiral groove for opening and closing an arm of a locking portion of a locking device for a manhole cover is formed.

FIG. 19A is a cross-sectional explanatory view illustrating a configuration of a rotating open manhole cover, and FIG. 19B is a plan explanatory view illustrating a configuration of a rotating open manhole cover.

FIG. 20 is a diagram illustrating a specific example of ID information.

FIG. 21 is a perspective view showing an example in which the electronic lock system according to the present invention is applied to a system for locking a plurality of doors.

[Explanation of symbols]

A: key cover, 1: locking device body, 1a: keyhole, 1b: lock,
1c: projecting portion, 1d: tapered surface, 2: locking portion cap, 2a: fitting portion, 2b: flange portion, 3: cap receiving member, 3a: through hole, 3b: engaging hole, 3c: tapered surface,
4 ... Control chip, 4a ... CPU, 4b ... ROM, 4c ...
RAM, 4d: solenoid driver, 4e: receiver, 4
f: power storage unit, 5: locking unit, 5a: electromagnetic solenoid, 5b: pin, 5c: power storage unit, 6: UL power supply, 6a ...
Dry battery, 6b ... power transfer button, 6c ... inverter, 6
d: electromagnetic induction primary coil, 7: electromagnetic induction secondary coil, 8
... Rectifier, 9 ... Capacitor, 9a ... Indicator lamp, 10 ... R / W
Terminal, 10a… Display, 11… Personal identification tag, 12…
Micro switch, 21 ... Power supply terminal, 22 ... Protection circuit, 23 ...
Power storage unit, 31 solar cell, 41 ground, 42 lid cover frame, 42a
Inner lid receiving part, 42b: Outer lid receiving part, 42c: Engaging part, 43: Manhole inner lid, 43a: Hinge part, 43b: Arm, 43c: Arm guide, 44: Manhole outer lid, 44a: Stainless steel part, 45 ... manhole cover, 45a ... arm guide, 45b ... hinge part, 45c ... locking claw, 46 ... handle key for opening the lid, 46a
... handle part, 46b ... rotating shaft, 46c ... key part, 46d ... projection, 46e ... shaft, 47 ... rotating plate, 47a ... spiral groove, 47b
… Engaging holes, 48… arms, 48a… support shafts, 51… doors, 52… door knobs

Continued on the front page (72) Inventor Toshinari Kato 1-53 Miyanodai, Toshocho, Katori-gun, Chiba F-term (reference) in Wing Metal Co., Ltd. 2E250 AA00 AA01 BB02 BB08 BB10 BB65 CC10 CC19 CC24 DD01 EE04 FF24 FF36 5G003 AA04 BA01 GB06 GB08 GC05

Claims (5)

[Claims] 1. An electronic lock system for unlocking a specific one of a plurality of locks by one or more electronic keys, wherein the lock is specified and ID information of the lock is specified. An electronic key capable of transmitting a signal and an unlocking signal for unlocking the lock, a locking unit for engaging or disengaging with the keyhole, and storing ID information unique to each lock, When the ID information signal and the unlocking signal transmitted from the electronic key are received and the ID information transmitted from the electronic key matches the stored ID information unique to the key cover, the locking unit is unlocked. A key cover having a control unit capable of being controlled, and an electromagnetic induction secondary coil connected to a power supply circuit of the control unit and the locking unit; Electromagnetic induction primary coil capable of supplying power to the electromagnetic induction secondary coil An electronic lock system comprising: a locking power supply unit having a lock. 2. A DC power supply is connected to an electromagnetic induction primary coil provided in the locking power supply unit via an inverter, and DC power supplied from the DC power supply is converted into AC power by the inverter, and An alternating magnetic field is generated in the electromagnetic induction primary coil, and power is supplied to the electromagnetic induction secondary coil by being electromagnetically coupled to the electromagnetic induction secondary coil provided in the key cover in a non-contact manner. The electronic lock system according to claim 1. 3. The electronic lock system according to claim 2, wherein the DC power supply is a dry cell power supply or a vehicle battery power supply. 4. An electronic lock system for unlocking a specific one of a plurality of locks with one or a plurality of electronic keys, wherein the lock is specified, and ID information of the lock is specified. An electronic key capable of transmitting a signal and an unlocking signal for unlocking the lock, a locking unit for engaging or disengaging with the keyhole, and storing ID information unique to each lock, When the ID information signal and the unlocking signal transmitted from the electronic key are received and the ID information transmitted from the electronic key matches the stored ID information unique to the key cover, the locking unit is unlocked. An electronic control unit comprising: a control unit capable of being operated; and a key cover connected to a power supply circuit of the control unit and the locking unit, and a solar cell provided on an exposed surface portion of the key cover. Locking system. 5. An electronic lock system for unlocking a specific one of a plurality of locks with one or more electronic keys, wherein the lock is specified, and ID information of the lock is specified. An electronic key capable of transmitting a signal and an unlocking signal for unlocking the lock, a locking unit for engaging or disengaging with the keyhole, and storing ID information unique to each lock, When the ID information signal and the unlocking signal transmitted from the electronic key are received and the ID information transmitted from the electronic key matches the stored ID information unique to the key cover, the locking unit is unlocked. A key cover having a possible control unit and a power supply terminal capable of electrically connecting an external power supply to a power supply circuit of the control unit and the locking unit;
An electronic lock system comprising: