JP2003184368A - Magnet type electronic key device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multifunctional electronic key device in which a magnet is arranged in a key and which allows an entrance lock to be opened/closed by detecting the arrangement of the magnet on the side of the lock by an electronic means. <P>SOLUTION: This electronic key device is composed of the lock A and the key B. The lock A has: a microcomputer 2 which has an abutting surface F on which a plurality of magnetometric sensors 1 are arranged, and makes a power source 4 and the magnetometric sensors 1 connected to the inside of an inside door D; an arrangement storage circuit 3a which is provided in a circuit 3 of the microcomputer 2 and in which the different magnet arrangements can be stored according to signals detected by the magnetometric sensors 1, by operating a storage resetting switch 9; a correspondence determining circuit 3b which determines whether or not the magnet arrangement stored in the circuit 3a correspond with the magnet arrangement detected by the magnetometric sensor 1; and an energization output circuit 3c which transmits a signal based on the determination of the circuit 3b. In the key B, a micro permanent- magnet 6 is fixed to a magnet arrangement surface 7 on which the magnet 6 can be fixed to a position, facing the magnetometric sensor 1, in a main body 5. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a key incorporating a magnet, and the lock side receiving the key reads the arrangement of the magnet incorporated in the key to obtain a specific arrangement. The present invention relates to an electronic key device that opens and closes a lock provided on a door such as a front door by an electronic circuit configured to output only a key for unlocking.

[0002]

2. Description of the Related Art Up to now, many small magnets have been arranged on a key, and an electronic circuit equipped with a magnetic sensor has been provided on the lock side.
Various types of electronic key devices have been proposed in which the magnetic sensor reads the arrangement of individual magnets on the key side and unlocks when the arrangement stored in advance matches the arrangement of the used key.

For example, a key switch in which a plurality of magnets are arranged on a key, and a hall element for sensing the magnetism is associated with the main body side corresponding to the key (JP-A-5-5).
9851) has been proposed. This key switch is designed to strengthen the magnetic force so that the Hall element can be detected even if the magnet of the key has a low magnetic force by disposing the magnet facing the magnet provided on the key on the main body side as well. Since a small magnet can be used, the key can be made smaller and lighter.

Further, a hatch opening / closing lock provided on a hatch of a tank of a tank truck (Japanese Patent Laid-Open No. 2000-29130).
1) is proposed. This is a hatch lock with multiple magneto-electric conversion elements, and the key body corresponding to the hatch lock has permanent magnets arranged correspondingly, but since it has low sensitivity, it corresponds to all of the multiple magneto-electric conversion elements. Then, the sub permanent magnet is attached so that the magnetic poles are opposite poles.
That is, the magnetic force is enhanced by making the opposite poles face each other.

All of them detect the magnetic arrangement of the key with a magnetic sensor provided on the lock, and confirm the correspondence between the one stored in advance and the one actually used, and match them. It was designed so that the lock can be opened when the lock was used.

A locking device with an electronic alarm device (Japanese Patent Laid-Open No. 56-64071) for the purpose of preventing theft of an automobile has been proposed. This device inputs to the code detection means so as to generate an output except for the code contents corresponding to the all non-grounded state in the locked state and the code contents previously given to the coding portion of the specific key. A code information compounding means including a plurality of logic gate circuit elements to which terminals are connected is provided, and when a key other than a specific key is used, an output is generated in the code information compounding means and an alarm is issued. . Since this device is an electrical contact type or non-contact type, the coding part is provided along the back part of the shank, and therefore the number of combinations of the contact and non-contact parts is small.

In any of the above-mentioned conventional devices, the number of possible combinations of individual key arrangements is small, and the small selection range for unlocking makes the unlocking easier, and thus the safety against crime is low. There is a drawback. Further, since the lock and the key have a fixed one-to-one correspondence with the key code, when the key is stolen, it is necessary to replace the lock in order to prevent the key from entering. Further, in the case where the key code is fixed one to one, it was not possible to recognize whether the person who entered the room was a family member or another cohabitant.

It is important to keep a record of who entered the room at what time in security control of entering a room where confidential work is being performed.
Although security management by cards is performed, such management could not be performed by the key device.

Further, in the past, one person had to carry out many different keys for entrance, car, parking lot, office, factory, locker, etc. individually and to go out as a key chain. Many of the keys that can be lowered were heavy and bulky, and when I put them in my pocket, the clothes on one side drooped down due to the weight, and I was worried about leaving them in the bag. For this reason, how to carry the key has also been very troublesome because the key is important for safety. Also,
When I was in a hurry, it was time-consuming to get the one key I needed out of the key ring, and finding a key with a similar shape.

[0010]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the prior art. By arranging a magnet on a key and reading and storing the magnet arrangement by electronic means on the lock side. , It is possible to open and close the entrance lock only for keys with a specific arrangement that has been memorized, and you can open and close multiple different locks with one key, and you can freely arrange the key code without replacing the lock side The present invention provides an electronic key device that can be used interchangeably and that has a multi-functionality for indoor access control.

[0011]

In order to solve the above-mentioned problems, the present invention provides a magnetic electronic key comprising a lock A and a single key corresponding to the lock A or a plurality of keys B having different magnet arrangements. , The lock A has a verification surface F in which a plurality of magnetic sensors 1 for detecting a weak magnetic field are arranged on a key contact portion C provided facing the outside, and a power source 4 is provided inside the door D on the inside or inside the room. And a microcomputer 2 to which the magnetic sensor 1 is connected, and a memory reset switch 9 provided in a circuit 3 of the microcomputer 2 is operated to determine a plurality of different magnet arrangements from a signal detected by the magnetic sensor 1. An arrangement storage circuit 3a that can be coded and stored, and a code determination that determines whether the magnet arrangement code stored in the arrangement storage circuit 3a and the magnet arrangement detected by the magnetic sensor 1 are the same or not. It has a road 3b, and energizing output circuit 3c for sending the determination signal.

The key B is located on the main body 5 so as to face the collation surface F of the lock A and faces the magnetic sensors 1 and the minute permanent magnets 6 are provided.
Has magnet placement surfaces 7 capable of fixing the magnets, and allows the magnet placement surfaces 7 to be fixed with an arbitrary number of minute permanent magnets 6 at arbitrary positions, and at the same time, the entire magnet placement surfaces 7 can be fixed. A magnet fixing lid 8 that can be covered is provided so as to be integrally fixed to the main body 5.

When the magnet arranging surface 7 of the key B is brought into contact with the collation surface F, the energization is carried out when the sign judging circuit 3b judges that the magnet arrangement matches the stored code. An output signal is sent from the output circuit 3c, the power supply 10 for driving the lock 11 of the door D is energized to output the drive mechanism M of the lock, and the lock 11 is opened. It is a characteristic magnet type electronic key device.

In the above structure, the magnetic sensor 1 uses any one of a magnetoresistive element, a Hall element and a semiconductor magnetoresistive element.

Further, in the above structure, the main body 5 of the key B is a flat plate key 5a having a flat plate shape and a round bar key 5 having a round bar shape.
b or a card-shaped card key 5c having a magnet arrangement surface 7 formed on the surface thereof, and each magnetic sensor 1 arranged on the lock A so as to face each minute permanent magnet 6 arranged on the magnet arrangement surface 7. The reference plane F is formed.

Furthermore, in the above construction, each magnetic sensor 1 on the collation surface F of the lock A is arranged on the magnet arrangement surface 7 of the key B.
The magnet fitting hole 1 is provided with micro permanent magnets 6 facing all or part of the magnet, and the direction can be switched between the magnetic field sensed by the magnetic sensor 1 and the magnetic field not sensed by the magnetic sensor 1.
6 is provided.

Furthermore, in the above-mentioned structure, the magnet fixing lid 8 is provided with a lid attaching / detaching means 17 which is attachable / detachable to / from the main body 5 of the key B, so that the minute permanent magnets 6 can be freely set in any number and at any place. It is characterized in that it can be fitted in and replaced.

Further, in the above-mentioned structure, the minute permanent magnet 6 is sandwiched and fixed between the magnet arrangement surface 7 of the main body 5 of the key B and the magnet fixing lid 8, and when the magnet fixing lid 8 is opened, the minute permanent magnet 6 is opened. It is characterized in that the magnet 6 is designed to fall from the magnet arrangement surface 7.

Further, in the above-mentioned structure, when the energization output circuit 3c judges by the sign judging circuit 3b to be coincident with each other, the power of the output device 27 for lighting the entrance light and / or reproducing the recorded sound is energized and outputted. It was made possible.

Furthermore, in the above configuration, when the energization output circuit 3c determines that they do not coincide with each other by the sign determination circuit 3b, the power of the alarm device 26 that outputs the sound of the alarm and / or turns on the alarm light is energized. It is characterized in that the alarm is output.

Furthermore, in the above structure, the fact that there is a match or a mismatch determined by the sign determination circuit 3b when the timepiece 18 is connected to the energization output circuit 3c is recorded and / or matched together with the time at that time. The recording circuit 3d for recording the code of the magnet arrangement described above is provided.

Further, in the above construction, a mechanical lock is integrally provided on the lock A, and the key B is provided with the insertion portion 20 having the uneven portion 21 corresponding to the mechanical lock on the main body 5 and the key contact portion. A rotation base 23 for rotating C around the center line of the insertion portion 20 is provided, and the insertion portion 20 of the key B is inserted into the mechanical lock and rotated, whereby the mechanical lock is unlocked and the sub lock 19 is unlocked. It is characterized by being opened.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. The present invention is a combination of a lock A and a key B as shown in FIG. The lock A has a collation surface F in which a plurality of magnetic sensors 1 for detecting a weak magnetic field are arranged in a key contact portion C provided facing the outside, and the lock A has an inside door D or an indoor side inside the door D. Of the magnetic sensor 1 by operating the memory reset switch 9 provided in the circuit 3 of the microcomputer 2 and the microcomputer 2 in which the magnetic sensor 1 is connected to the power source 4 which can be exchanged. It is determined whether the arrangement storage circuit 3a capable of encoding and storing a plurality of different magnet arrangements from a signal and the magnet arrangement code stored in the arrangement storage circuit 3a and the magnet arrangement detected by the magnetic sensor 1 are the same or not. It has a sign judgment circuit 3b for performing the judgment and an energization output circuit 3c for sending the judged signal.

As shown in FIG. 9, the microcomputer 2 is provided with a program memory, an electrically readable / writable non-volatile memory (EEPROM) in the arithmetic control section, and an input / output driver. The circuit 3 of the microcomputer 2 is a magnetic sensor (MR sensor) shown in FIG.
As shown in FIG. 8, a controller for controlling, commanding, and storing according to a program is provided corresponding to the configuration having a lock / unlock output, an alarm output, and a memory switch.

The key B is separated from the lock A, and a magnet arranging surface is formed on the main body 5 so as to face the collation surface F of the lock A and to fix the minute permanent magnets 6 at positions facing the respective magnetic sensors 1. A magnet fixing lid 8 which has 7 and is capable of fixing an arbitrary number of minute permanent magnets 6 on the magnet arrangement surface 7 at an arbitrary position and can cover the entire surface of the magnet arrangement surface 7. It is provided so that it can be fixed integrally with the main body 5. The key B for the lock A is a combination of one key B or a plurality of keys B having different magnet arrangements.

When the magnet arranging surface 7 of the key B is brought into contact with the collation surface F, when it is judged by the sign judging circuit 3b that the magnet arrangement coincides with the stored code, the energization is carried out. An output signal is sent from the output circuit 3c, the energization output of the drive power source 10 for operating the lock 11 of the door D is output via the output cord 22, the drive mechanism M of the lock is operated, and the lock 11 is opened. So that

In the lock driving mechanism M, as shown in FIG. 1, when an output signal is sent from the energization output circuit 3c, the current of the lock driving power source 10 is energized to the worm driving motor 28, and the motor 28 is driven. It is possible that the rack slider 14 formed integrally with the lock 11 is slid by the rotation of the worm 15 by means of which the lock rod 11 can be projected and retracted. The drive mechanism M drives the lock lock 11 to move in and out, and other various modes are possible.

As the magnetic sensor 1, any one of a magnetoresistive element, a Hall element and a semiconductor magnetoresistive element can be used. The direction in which the magnet is fixed to the key B varies depending on the type of element used in the magnetic sensor 1, but as shown in FIG. 5, (a) is a heteropolar face, (b) is a homopolar face, and (c) is a parallel face. It is possible to have each mode in which both poles have the same polarity, and (d) has parallel poles that have the different poles. However, when different poles face each other like (a) different pole facing surface and (d) parallel bipolar opposite pole facing surface, magnetic leakage and interference occur. The polar facing surface and the parallel bipolar homopolar facing surface of (c) are used.

Among them, semiconductor magnetoresistive element (MR element)
Is particularly sensitive to weak magnetic fields and is suitable for compactness. When this element is used, the fixing direction of the magnet with respect to the key B can be set laterally on the magnet arrangement surface 7 as shown in FIGS. 4 and 7. When using a Hall element, as shown in FIG. 6, it can be installed vertically on the magnet arrangement surface 7.

As shown in FIG. 3, the main body 5 of the key B has a flat plate-shaped flat key 5a (shown in FIG. 5A) and a round bar-shaped round bar key 5b (shown in FIG. )) Or a card-shaped card key 5c (shown in (c) of FIG. 5). In these cases, the magnet arranging surface 7 is formed on the surface thereof, and the collation surface F on which the magnetic sensors 1 are arranged is formed on the lock A so as to face the minute permanent magnets 6 arranged on the magnet arranging surface 7.

In the case of the round bar key 5b, an angle deviation may occur with respect to the collation plane F depending on the insertion angle. Therefore, an axial groove is provided so that the insertion can be made only from one direction. It is preferable that the collation surface F on which the sensor 1 is arranged is brought into contact with the collation surface F for accurate collation. Further, it is also possible to adopt a mode in which different magnet arrangements are formed by forming different magnet arrangement surfaces 7 on the front and back sides of the card key 5c and the flat plate key 5a. In this way, one key B can be used for different locks A.

Further, as shown in FIGS. 6 and 7, on the magnet arrangement surface 7 of the key B, the minute permanent magnets 6 facing all or part of each magnetic sensor 1 on the collation surface F of the lock A are arranged. However, a configuration is possible in which the magnet fitting hole 16 that can change the direction of the magnetic field sensed by the magnetic sensor 1 and the direction of the magnetic field not sensed is provided.

Furthermore, as shown in FIGS. 6 and 7,
The magnet fixing lid 8 is provided with a lid attaching / detaching means 17 that can be attached / detached to / from the main body 5 of the key B, so that any number of the minute permanent magnets 6 can be freely inserted and exchanged at any place. be able to.

Further, the magnet arrangement surface 7 of the main body 5 of the key B is
The minute permanent magnets 6 are sandwiched between the magnet fixing lid 8 and the magnet fixing lid 8 and fixed, and when the magnet fixing lid 8 is opened, the minute permanent magnets 6 can fall off from the magnet arrangement surface 7.

Further, as shown in FIG. 1, when the energization output circuit 3c is judged as coincident by the sign judging circuit 3b, the power source of the output device 27 for lighting the entrance light and / or reproducing the recorded sound is turned on. The power is supplied via the output cord 22b so that the power can be output.

Furthermore, as shown in FIG. 1, when the energization output circuit 3c is judged as unmatched by the sign judging circuit 3b, the alarm device 26 for outputting the sound of the alarm and / or turning on the alarm lamp. It is also possible that the power source is turned on through the alarm code 22a to output an alarm.

Furthermore, as shown in FIG. 1, the energization output circuit 3c is connected to a clock 18 such as an internal clock or an electronic timepiece, and the coincidence or non-coincidence judged by the sign judgment circuit 3b is detected. It is possible to provide a recording circuit 3d for recording and / or recording the code of the magnet arrangement which coincides with the time at that time.

The electronic parts of the lock A and the key B are almost the same as those described above, but there is also a compound device in which a conventional general mechanical lock (illustration of the internal structure is omitted) is combined therewith. It is possible. For example, in FIG. 2, the lock A is provided on the outside of the partition plate 25 provided in the door D, and the partition plate 25
A mechanical lock is combined on the back side of the key B corresponding to this.
What is formed is possible.

In this embodiment, the lock A is integrally provided with a mechanical lock, and the key B is provided with the insertion portion 20 having the uneven portion 21 corresponding to the mechanical lock in the main body 5 and the key contact portion C. A rotary table 23 that rotates around the center line of the insertion portion 20 is provided, and the insertion portion 20 of the key B is inserted into the mechanical lock and turned to the left and right to lock and unlock the mechanical lock. Make sure that the lock 19 is opened and closed.

If the key B is not the concave / convex portion 21 corresponding to the mechanical lock, it cannot be unlocked because it cannot be rotated even if it is inserted into the mechanical lock. The lock A is restricted in that it cannot be opened / closed unless the insertion portion 20 of the key B and the mechanical lock on the back correspond to each other, but the other functions are the same as those not provided in this combined device.

That is, regarding the key operation by the constraint,
When unlocking, insert the key B into the mechanical lock and rotate it to the right to unlock the sub lock 19. At the same time, the magnet arrangement surface 7 of the key B in which the magnet arrangement is stored is brought into contact with the verification surface F on which the magnetic sensors 1 of the lock A are arranged, and the magnet arrangement of the key B coincides with the stored arrangement. When it is determined that the lock 11 is on, the power supply 10 for driving the lock 11 of the door D is energized and the lock drive mechanism M opens the lock 11. Then, the key B is inverted and pulled out.

When locking, the key B is inserted into the mechanical lock and rotated counterclockwise to lock the sub lock 19. At the same time, the magnet arrangement surface 7 of the key B in which the magnet arrangement is stored is brought into contact with the collation surface F on which the magnetic sensors 1 of the lock A are arranged, so that the magnet arrangement of the key B is stored. If it is determined that the lock D has been operated, the drive power supply 10 for operating the lock 11 of the door D is energized and output, the motor rotates in the opposite direction to that when unlocked, and the lock 11 is locked by the drive mechanism M. It is locked by protruding from the inside. And key B
Invert and pull out.

[0043]

[Usage method] The present invention has multiple functions, and the usage method thereof will be described below.

(B) Relocation of key magnet The computer management method using a magnetic card or an ID card has been implemented so far, but there is a drawback in that installation of equipment for that purpose and daily operation are very expensive. is there.
Further, in a magnetic card having a magnetic band, the magnetic storage may be destroyed by applying magnetism, or the contents may be rewritten by a writing device. Furthermore, there is a difficulty in that it is impossible to freely rewrite the ID number and the stored content even if it is one's own.

On the other hand, in the present invention, the owner of the key B can easily and arbitrarily replace the minute permanent magnet 6 and use it. That is, the lid attaching / detaching means 17 of the key B
The magnet fixing lid 8 fixed to the magnet arrangement surface 7 is opened by (a set screw in FIGS. 6 and 7). As shown in FIGS. 6 and 7, the minute permanent magnet 6 is fitted into the magnet fitting hole 16 of the magnet placement surface 7 of the key B. Regarding the embedding place, the magnet fitting hole 16 is entirely embedded, and at that time, the magnetic sensor 1
The direction of the magnetic field that is sensed by and the direction of the magnetic field that is not sensed are arranged so that the direction is changed by several.

As another method, as shown in FIG.
It is possible to use a method in which several magnets are blank instead of being entirely embedded in the magnet fitting holes 16. Further, in a mode in which the minute permanent magnet 6 is sandwiched and fixed between the magnet placement surface 7 of the main body 5 of the key B and the magnet fixing lid 8, when the magnet fixing lid 8 is opened, the minute permanent magnet 6 is placed in the magnet. Since it naturally spills from the surface 7, this restoration becomes extremely difficult and the safety against theft modification is enhanced.

(B) Coding of magnet arrangement of keys and storage in microcomputer The arrangement of the minute permanent magnet 6 is fixed and the fixed key B is inserted into the lock A or the key contact portion C of the superposition type. Apply to. Then, the memory reset switch 9 is pressed to code a plurality of different magnet arrangements from the signal detected by the magnetic sensor 1, and the arrangement storage circuit 3a stores the code.

The arrangement storage circuit 3a is provided with a memory as shown in FIG. 7 so that a large number of codes can be stored. This way, dozens of different keys with different codes B
Can be used. If each person has one key, a key B for several tens of people can be used for one lock A.

(C) Unlocking with the key For unlocking, use the key B in which the magnet arrangement is stored (any key is acceptable if the code is stored in the arrangement storage circuit 3a),
Insertion type (flat plate key 5a, round bar key 5 that is inserted into the hole of the lock A
b) or a superposition type (flat plate key 5a, which is placed on the verification surface F,
Touch the key contact portion C of the card key 5c). Then, a signal judged to be coincident by the coincidence judgment circuit 3b for judging whether the code of the magnet arrangement stored in the arrangement storage circuit 3a of the lock A and the magnet arrangement sensed by the magnetic sensor 1 are coincident or non-coincident. Door D sent by energization output circuit 3c
The energization output of the driving power supply 10 for operating the lock 11 is performed via the output cord 22. Then, the lock drive mechanism M is operated, and the lock 11 is retracted into the door D.

Then, even if the key B is removed from the lock A,
The lock 11 remains immersed in the door D. Then, as shown in FIG. 1, the door D can be opened by rotating the door knob 13 to open the lock block 12 (of a general structure).

Further, at this time, the power supply of the output device 27 for turning on the entrance light illuminating the feet and reproducing the voice recording the voice of the family is energized from the energization output circuit 3c through the output cord 22 to illuminate. It is also possible to output a voice. For example, if you connect it to a speaker with a recording / playback machine placed at the entrance, and a child inserts the key B, the entrance light will light up, and a voice such as "Welcome home" will be automatically output from the speaker of the energization output destination by the mother. It can also be set to output as desired.

(D) To the place where the key B is removed from the lock A and the lock 11 remains in the door D (unlocked state).
When the key B is reinserted, the motor reverses and the lock 11 projects from the inside of the door D and is locked. And
Even if the key B is removed from the lock A, the lock 11 remains in the protruding state. Further, the lock can be performed by mechanically projecting the lock 11 from the inside of the door D by a locking knob (not shown) provided on the indoor side without inserting the key B.

(E) The anti-crime and anti-breaking key B (the key of which the code is not stored in the arrangement storage circuit 3a) is applied to the insertion or superposition type key contact portion C of the lock A. Then, the code determined by the sign determination circuit 3b for determining whether or not the code of the magnet arrangement stored in the arrangement storage circuit 3a of the lock A and the magnet arrangement detected by the magnetic sensor 1 are the same or not. The energization output circuit 3c sends the energization output of the driving power source 10 which activates the alarm, and the alarm is output from the alarm device 26 which outputs the sound of the alarm device and / or the alarm lamp. When the key B is removed from the lock A, the energization output of the driving power source 10 is stopped.

Further, in the case where the recording circuit 3d is provided, the recording and / or the code of the magnet arrangement corresponding to the recording is recorded together with the time at this time, and the recording is printed out from the connected printer. It is possible to confirm that there was evidence of an attempted intrusion and the date and time, and it can be useful for strengthening the alert system to prevent recurrence.

Further, when the energization output is made to the alarm device 26, it is possible to freely select an output destination such as automatic transmission to a mobile phone, transmission to a security company, connection to various crime prevention machines and the like. You can also

When the key B is stolen, the lock A cannot be used without replacing the lock A. The method is completed by erasing the magnet arrangement code stored in the arrangement storage circuit 3a by operating the storage reset switch 9. When the set number of stored codes, for example, 20 is set, it can be erased in advance by consuming the storage capacity by setting 20 times with the handy key B, and a simpler method. Alternatively, the code erasing switch 9a may be provided to perform the operation once.

When the lock A is unlocked using the theft key B, even if the code stored in the lock A is erased, the magnet arrangement is the same as the magnet arrangement code of the other usable keys B. However, in that case, the magnet arrangement will always be possible by repeatedly trying the permutation combination number of the magnet arrangements used, but in that case, Whenever an alarm is issued and the magnet arrangement is such that the number of magnet fitting holes 16 into which the small permanent magnets 6 used are fitted is 40, the number of fittings and the combination of the positions thereof is 1 trillion (40 in 2). It's almost impossible to find one out of them. Therefore, the key B of the erased code cannot be used.

In managing rental housing, company housing, employee dormitories, public facilities, nursing facilities, etc., living room users frequently move. In that case, you may have just returned the key you were using, but at the current time that the key is cheap and easily duplicated, you can not rest assured just by returning the key,
Normally, the lock is replaced so that the previous user cannot enter the room. Due to the increase in damage caused by picking, two-piece attachment has become popular, and a large cost is spent on the replacement work of the lock.

In the present invention, by operating the memory reset switch 9 of the lock A, a plurality of different magnet arrangements are coded from the signal detected by the magnetic sensor 1 for the key B and the code is stored in the arrangement storage circuit 3a. Since the key B is used for copying, even if the person who has left moves duplicates the key B and uses it, the key B cannot be used without changing the lock A to another one by erasing the code of the duplicate key B. . In addition, the key B returned by eviction can be used by changing the magnet arrangement and newly storing the code of the magnet arrangement. Therefore, by changing the magnet arrangement using the key B, another person can repeatedly use it. You can use it.

(F) Indoor entrance / exit management In the present invention, entrance / exit management can be performed by a key device which is very inexpensive in terms of cost as compared with the conventional ID card management methods. That is, the key B having a code which is not stored in advance cannot be used for access and the recording circuit 3
In the mode provided with d, since the code of the magnet arrangement that matches the time can be recorded together with the time when the person comes in and out, the time when the owner of the key B of the code came in and out is recorded. Further, it is possible to enter / exit a plurality of secret rooms with one key B, and it is possible to separate the room in which the room can enter and the room in which the room cannot enter / exit from each other.

Further, in the case of a private house, even if the parent is out, it is possible to check the individual behaviors of multiple children entering and leaving the house, so that the door of the room where the child is managed or if there is a cohabitant such as a renter The lock A can also be used as the lock A on the front door with a single key so that the family of the house cannot enter the room of the cohabitant.

[0062]

The present invention is as described above, and each magnetic sensor 1 in which the arrangement of each minute permanent magnet 6 of the key B is the lock A.
Is read and coded, and the code is stored in the arrangement storage circuit 3a of the microcomputer 2. Key B
The arrangement of the minute permanent magnets 6 can be easily changed by the user by opening the magnet fixing lid 8 and the operation of storing the arranged code for the lock A can be easily performed by operating the memory reset switch 9.

The key B is miniaturized by improving the performance of each magnetic sensor 1, and moreover, the combination of arrangements can be extremely large depending on the number of holes for accommodating the magnets. Further, when a key that is not stored is used, the lock A cannot be unlocked and a warning and an alarm can be automatically issued, which is useful for preventing crime such as burglary.

Even if the person who left the rental house does not return the key B to the manager, the manager or the resident may erase the code of the key B by operating the memory reset switch 9 of the lock A. The key B cannot be used without replacing the lock A with another one.
Also, the key B returned by eviction can be used by changing the magnet arrangement and newly storing the code of the magnet arrangement. Therefore, by changing the magnet arrangement using the key B, another person can repeatedly use it. Can be used.

Further, in the form provided with the recording circuit 3d,
Since the code of the magnet arrangement that matches the time can be recorded along with the time when you came in and out, it is recorded when the owner of the key B of that code used that key B, so each person should have one This allows you to manage the person in and out of the room.

Also, since a plurality of different locks A can be opened and closed with one key B, it is not necessary to hang and carry many heavy keys on the key chain, especially in the case of light clothing without pockets for storing keys in summer. Since I only need to hold one key B, I can walk around easily.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a state in which a part of a door of the present invention is cut away.

FIG. 2 is a schematic perspective view showing a state in which a part of a door in another form is cut away.

FIG. 3 is a perspective view showing a flat key in which a part of the magnet fixing lid is cut out, a round bar key in (b), and a card key in (c).

FIG. 4 is an electronic circuit block diagram.

[FIG. 5] (a) of the magnet is a heteropolar facing surface, (b) is a homopolar facing surface,
FIG. 4C is a layout diagram showing a mode in which (C) is a bipolar facing surface and (D) is a bipolar different facing surface.

FIG. 6 (a) of the key shows the shape of the magnet arrangement fixing hole,
FIG. 6B is a perspective view showing each state in which (B) has a magnet arranged in the hole.

[Fig. 7] Another key (a) shows the shape of the magnet arrangement fixing hole,
FIG. 6B is a perspective view showing each state in which (B) has a magnet arranged in the hole.

FIG. 8 is a block diagram of a microcontroller.

FIG. 9 is a configuration diagram of a CPU.

[Explanation of symbols]

1 Magnetic sensor 2 microcomputer 3 Microcomputer circuit 3a Placement memory circuit 3b code judgment circuit 3c energization output circuit 3d recording circuit 4 power supply 5 key body 5a Flat plate key 5b Round bar key 5c card key 6 Minute permanent magnet 7 Magnet placement surface 8 Magnet fixed lid 9 Memory reset switch 9a Code erase switch 10 Lock drive power supply 11 lock 12 no blocks 13 knobs 14 Rack slider 15 worms 16 Magnet fitting hole 17 Lid attaching / detaching means 18 clock 19 Vice lock 20 Vice lock key 21 Vent lock key 22 Output code 22a alarm code 22b output code 23 Turntable 24 frame 25 partition boards 26 Alarm device 27 Output device 28 worm drive motor A lock B key C key contact part F collation plane M lock drive mechanism D door

   ─────────────────────────────────────────────────── ─── Continued front page    (71) Applicant 501488284             Kanuma Chamber of Commerce             287-16 Mutsumicho, Kanuma City, Tochigi Prefecture (72) Inventor Kunihiko Takahashi             2-2138 Onaribashi, Kanuma City, Tochigi Prefecture Marui Keiki Co., Ltd.             Ceremony Company Kanuma Factory

Claims (10)

[Claims] 1. A magnetic electronic key comprising a lock (A) and one key or a plurality of keys (B) having separate magnet arrangements corresponding to the lock (A), wherein the lock (A) is located outside. The key abutting portion (C) provided so as to face has a verification surface (F) on which a plurality of magnetic sensors (1) for detecting a weak magnetic field are arranged, and a power source 4) and the magnetic sensor (1) connected to the microcomputer (2)
And a plurality of different magnet arrangements are coded and stored from a signal sensed by the magnetic sensor (1) by operating a memory reset switch (9) provided in the circuit (3) of the microcomputer (2). A possible arrangement storage circuit (3a), and a code determination circuit (3) for determining whether or not the magnet arrangement code stored in the arrangement storage circuit (3a) and the magnet arrangement detected by the magnetic sensor (1) are the same or not.
b) and an energization output circuit (3c) for sending the judged signal
The key (B) has a small permanent magnet (6) fixed to the main body (5) at a position facing the verification surface (F) of the lock (A) and facing each magnetic sensor (1). The magnet placement surface (7), and an arbitrary number of minute permanent magnets (6) can be fixed to the magnet placement surface (7) at any place. A magnet fixing lid (8) capable of covering the entire surface of (7) is provided so as to be integrally fixed to the main body (5), and the magnet arrangement surface (7) of the key (B) is the verification surface (F). When it is contacted with the door, the sign determination circuit (3b) determines that the arrangement of the magnets matches the stored code, and the energization output circuit (3c) sends an output signal to the door (D ) The lock power supply (10) for driving the lock (11) is energized to output the lock. Driving mechanism (M) is activated, the magnet electronic key device, characterized in that said lock (11) is to be opened. 2. The magnetic electronic key device according to claim 1, wherein the magnetic sensor (1) uses any one element of a magnetic resistance element, a Hall element, and a semiconductor magnetic resistance element. 3. A main body (5) of the key (B) is a flat plate-shaped key (5a), a round bar-shaped round bar key (5b) or a card-shaped card key (5c), and a magnet on the surface thereof. A collation surface (F) on which the magnetic sensor (1) is arranged on the lock (A) so as to face the minute permanent magnets (6) arranged on the magnet arrangement surface (7) while forming the arrangement surface (7). The magnet type electronic key device according to claim 1, wherein the magnet type electronic key device is formed. 4. A magnet permanent surface (7) of the key (B) is provided with a minute permanent magnet (6) facing all or part of each magnetic sensor (1) of the verification surface (F) of the lock (A). The magnet fitting hole (1) which is arranged so that the direction of the magnetic field sensed by the magnetic sensor (1) and the direction of the magnetic field not sensed by the magnetic sensor (1) can be changed.
6) The magnetic electronic key device according to claim 1, further comprising: 5. The magnet fixing lid (8) is provided with a lid attaching / detaching means (17) adapted to be attached / detached to / from the main body (5) of the key (B), and any number of minute permanent magnets (6) can be freely attached. The magnet type electronic key device according to any one of claims 1 to 4, wherein the magnet type electronic key device can be replaced by being fitted in an arbitrary place. 6. A minute permanent magnet (6) between the magnet placement surface (7) of the main body (5) of the key (B) and the magnet fixing lid (8).
The micro permanent magnet (6) is designed to spill and fall from the magnet arrangement surface (7) when the magnet fixing lid (8) is opened by sandwiching and fixing. The magnet type electronic key device as described in one item. 7. An output device (27) for illuminating a front light and / or reproducing a recorded sound when the energization output circuit (3c) judges that they match by the sign judging circuit (3b).
7. The power supply of claim 1 is energized to enable output.
The magnet type electronic key device according to any one of the above. 8. An alarm device (26) for outputting an audio signal from an alarm and / or turning on an alarm lamp when the energization output circuit (3c) determines that they do not match by the sign determination circuit (3b).
The magnet type electronic key device according to any one of claims 1 to 7, wherein the power source is turned on to output an alarm. 9. A timepiece (18) is provided in the energization output circuit (3c).
And a recording circuit (3d) for recording the coincidence or non-coincidence judged by the coincidence judgment circuit (3b) with the time and / or recording the code of the magnet arrangement which coincides. The magnet type electronic key device according to claim 1, wherein the electronic key device is a magnet type electronic key device. 10. A lock (A) is integrally provided with a mechanical lock, and a key (B) is formed with an insertion portion (20) having a concave and convex portion (21) corresponding to the mechanical lock in a main body (5). At the same time, a rotation base (23) for rotating the key contact portion (C) around the center line of the insertion portion (20) is provided, and the insertion portion (20) of the key (B) is inserted into the mechanical lock. The magnetic electronic key device according to any one of claims 1 to 9, wherein the mechanical lock is unlocked by inserting and turning the auxiliary lock (19).