JPH08184233A - Electronic lock and electronic key - Google Patents

Abstract

PURPOSE: To unlock electrically by means of a code number by installing a connector which is connected to an electronic key, a code number memory means, a code number receiving means, a code number reference means and a locking means which locks after having received an unlocking command signal. CONSTITUTION: A connector 3A is inserted into a connector 4 of an electronic lock 1 when unlocked and a code number transmission signal command means 10 of a one key type electronic key 2A is depressed, thereby allowing a code number transmission means 11 to read a code number of a code number memory means 9 and converting the signal into an electric signal and transmitting the converted signal to an electronic key 1. A connector 3B of a ten key type electronic key is inserted into the connector 4 of the electronic lock 1 so as to input the code number with the code number input means, which converts electrically the code number which has entered the code number transmission means 13 and thereby transmits the converted signal to the electronic lock 1. The code number receiving means 6 is adapted to refer the signal with the received code number of the code number memory means 5. When the numbers are identical, a release command signal is output. An unlocking means 8 is adapted to receive a release command signal and unlocks the electronic lock 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic lock and an electronic key which can be unlocked by a personal identification number.

[0002]

2. Description of the Related Art Keys and locks are extremely important in terms of crime prevention, and various types have been proposed, but most of small locks such as padlocks are mechanical type locks.

[0003]

In the case of the conventional mechanical type lock, since the irregularities of the key ridge are used as a secret code, there is a limit to the type, and there is a problem that the security against forgery cannot be sufficiently secured. Further, the conventional mechanical lock has a problem that it can be unlocked by picking and can be opened even without a key.

The present invention has been made in order to solve the above problems, and replaces a conventional mechanical lock such as a padlock with
An object of the present invention is to provide an electronic lock and an electronic key that can be unlocked electrically using a personal identification number.

[0005]

In order to achieve the above-mentioned object, the present invention adopts the constitution as shown in FIG. That is, the electronic lock 1 of the present invention is the electronic key 2A (or 2B).
A connector 4 connected to the personal computer, a personal identification number storage means 5 storing a personal identification number for unlocking, a personal identification number receiving means 6 for receiving a personal identification number sent from an electronic key through the connector, and the reception. The personal identification number and the personal identification number stored in the personal identification number storage means are collated with each other, and when the two coincide, the personal identification number collating means 7 outputs an unlocking command signal, and a lock upon receiving the unlocking command signal. And an unlocking means for unlocking. The personal identification number stored in the personal identification number storage means 5 is preferably rewritable. In addition, the electronic key 2 is inserted through the connector 4.
It is preferable that the power source 14A (or 14B) is supplied from the A (or 2B) side. Furthermore, it is preferable that the body of the electronic lock 1 has a waterproof structure.

The first electronic key 2A of the present invention is an electronic lock 1
A connector 3A connected to the personal identification number, a personal identification number storage means 9 storing a personal identification number for unlocking, a personal identification number sending command means 10 for outputting a personal identification number sending command signal when operated during unlocking, When a personal identification number transmission command signal is received from the personal identification number transmission command means, the personal identification number stored in the personal identification number storage means is read out, converted into an electric signal, and transmitted to the connector. It is characterized by that. The personal identification number stored in the personal identification number storage means 9 is preferably rewritable. Further, it is preferable to supply the power source 14A of the electronic key 2A to the electronic lock 1 via the connector 3A.

The second electronic key 2B of the present invention is an electronic lock 1
To the connector 3B, a personal identification number input means 12 for inputting a personal identification number at the time of unlocking, and a personal identification number transmission means for converting the personal identification number input from the personal identification number input means into an electric signal and transmitting it to the connector. And 13 are provided. It is preferable to use a ten-key pad as the personal identification number input means 12. Further, it is preferable to supply the power supply 14B of the electronic key 2B to the electronic lock 1 via the connector 3B.

[0008]

The electronic key 2A of the present invention constitutes a so-called one-key type electronic key. When unlocking, the connector 3A is inserted into the connector 4 of the electronic lock 1 and then the personal identification number sending command means 10 is operated. Press. As a result, the personal identification number sending means 11 reads the personal identification number stored in advance in the personal identification number storage means 9, converts it into an electric signal, and sends it to the electronic lock 1 via the connector 3A.

Further, the electronic key 2B of the present invention constitutes a so-called ten-key type electronic key, and when unlocking, after inserting the connector 3B into the connector 4 of the electronic lock 1, the personal identification number input means. Operate 12 to enter the personal identification number. As a result, the personal identification number sending means 13 converts the input personal identification number into an electric signal, and the connector 3B.
To the electronic lock 1 via.

On the other hand, the password receiving means 6 of the electronic lock 1 is
When the personal identification number sent from the electronic key 2A or 2B is received via the connector 4, the received personal identification number is collated with the personal identification number stored in the personal identification number storage means 5, and when the personal identification number matches. The unlock command signal is output only to.

When the unlocking means 8 receives the unlocking command signal output from the personal identification number collating means 7, it drives the unlocking stepping motor or the like to unlock the electronic lock 1.
The password storing means 5 of the electronic lock 1 and the electronic key 2
If the personal identification number storage means 9 is an EEPROM (electrically rewritable read-only memory) and the personal identification number is rewritable, the user can freely register the personal identification number desired. You can

When the power supply 14A (or 14B) on the electronic key 2A (or 2B) side is supplied to the electronic lock 1 through the connector 3A (or 3B), the power supply needs to be built in the electronic lock 1. Since it is eliminated, the electronic lock can be made smaller, and battery replacement or the like is not necessary, so that it can be left for a long time and maintenance-free.

In addition, when the body of the electronic lock 1 has a waterproof structure, rain and water will not enter the inside of the lock to damage the electric circuit and the operating mechanism, and even in a place exposed to wind and rain outdoors. You can use it with confidence.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 2 to 6 show an embodiment of the electronic lock according to the present invention. 2 is an external view of the electronic lock, FIG. 3 is an external view of the electronic lock with the waterproof rubber cap removed, FIG. 4 is a front view showing the internal structure of the electronic lock, and FIG. 5 is an internal structure of the electronic lock. FIG. 6 is a side view and FIG. 6 is an electric circuit diagram of the electronic lock according to the embodiment.

The electronic lock 1 according to this embodiment has substantially the same shape as a conventionally known mechanical padlock as shown in FIG. The difference is that, instead of the conventional keyhole, a female connector 4 for exchanging signals such as a personal identification number and power supply is provided at an appropriate position such as the bottom surface of the body 101. A rubber cap 102 for waterproofing is fitted to the female connector 4 so that it can be removed from the female connector 4 and rotated around the pin 102a as shown in FIG.

The internal structure of the electronic lock 1 is shown in FIGS.
This will be described below. A push-in U-shaped hook 103 similar to a conventional padlock is provided on the upper end surface of the body 101. A hook spring 104 is contracted at one base end portion of the hook 103, and the hook 103 is biased by the spring so as to be constantly pushed outward.

On the other hand, a locking groove 105 for locking is formed at the tip of the hook 103 on the other end side.
When 3 is pushed in against the spring force of the hook spring 104, the tip of the latch 106 engages with the locking groove 105 to lock the hook 103 in the locked position.

Reference numeral 107 is a microminiature stepping motor for moving the latch 106 forward and backward. The worm 108 is attached to the rotary shaft. This warm 10
8 is meshed with the worm wheel 109, and the worm 1 is rotated by the rotation of the stepping motor 107.
The worm wheel 109 is adapted to rotate via 08.

On the side surface of the worm wheel 109,
A pin 110 for advancing and retracting the latch is planted at a position apart from the rotation axis by a predetermined distance. This worm wheel 10
A disc 111 is coaxially attached to the wheel shaft of the disc 9, and a notch (not shown) for detecting a rotational position is formed at a predetermined position on the circumferential surface of the disc.

A photointerrupter 113 having a U-shaped cross section, which is formed by facing a pair of light emitting and receiving elements, is arranged on the disc 111 so as to sandwich the disc 111, and the photointerrupter 113 is provided with the cutout. Is detected, the rotational position of the worm wheel 109 is detected.

Therefore, when the notch comes directly under the photo interrupter 113, the stepping motor 107
If the electronic key is pulled out during the unlocking operation to be described later, the stepping motor will automatically turn to set the worm wheel at a fixed position when the key is reinserted. Therefore, the unlocking operation can be smoothly performed.

On the other hand, the inside of the latch 106 is hollow, and the tip of the shaft 114 is slidably inserted into the hollow and is then covered with a latch cover 116. The latch cover 116 and the fixed washer 1
A latch spring 118 is contracted between 17 to allow the latch 106 to expand and contract by the amount of the cavity, and to provide elasticity when engaging with the engaging groove 105. A shaft guide 120 having a guide groove 119 into which the pin 110 of the worm wheel 109 is loosely fitted is fixed near the other end of the shaft 114.

Therefore, the worm 108 is rotated by the stepping motor 107, and the worm wheel 1
When the 09 rotates, the pin 110 that rotates together with the worm wheel 109 pushes the guide groove 119.
The shaft 114 and the latch 106 have bearings 12 at both ends.
1 and 122, the shaft is slidably supported in the left-right direction.
The latch 106 moves back and forth in the left-right direction to lock and unlock the hook 103.

In FIGS. 4 and 5, reference numeral 150 is a printed circuit board for mounting an electric circuit. This printed circuit board 15
The female connector 4 and the components of the electric circuit as shown in FIG. Explaining the electric circuit of FIG. 6, 151 is an MPU (microprocessor),
Reference numerals 152 and 153 are motor drive circuits for rotationally driving the stepping motor 107. Phase φ of drive pulse output from these two motor drive circuits
By changing ₁ and φ ₂ , stepping motor 10
7 can be freely rotated in both forward and reverse directions.

Reference numeral 154 denotes an EEPROM (electrically rewritable read-only memory; hereinafter abbreviated as "memory") which stores a control program and a personal identification number, and 155 is a power for automatically resetting the circuit to an initial state when the power is turned on. An on-reset circuit 156 is a time constant circuit for clock oscillation.

In the illustrated example, the female connector 4 has a data input terminal 157 for receiving a personal identification number and the like, a data output terminal 158 for transmitting a status signal indicating the unlocked / locked state to the electronic key side, It is provided with four power source terminals 159 and 160 for supplying drive power from the electronic key side. 161 to 163 are Zener diodes for absorbing abnormal voltage, and 164 is a capacitor for removing power source noise.

In the case of this embodiment, the body 101 of the electronic lock 1 is divided into two in a shell type, and a waterproof packing is embedded along the entire periphery of one body half, and the other body half is sealed. The body halves are overlapped and screwed together to form a complete honey structure.

The electronic lock 1 according to the above embodiment has the same overall shape as a conventional padlock. Therefore, it can be easily replaced with a mechanical padlock, and discomfort in mounting can be eliminated. In addition, the lock mechanism is strong and has a structure that does not unlock even with external vibration, so that it will not unlock even if a fire should occur. Furthermore, since a micromotor is used as the stepping motor 107, power consumption is small.

Next, a first embodiment of an electronic key for unlocking the electronic lock 1 will be described with reference to FIGS. 7 and 8. FIG. 7 is an external perspective view of the electronic key, and FIG. 8 is an electric circuit diagram thereof. The first embodiment is an example of a so-called one-key type electronic key 2A (see FIG. 1).
This one-key type electronic key 2A is provided with only one unlocking key 201, as shown in the external view of FIG. 7, and has a male connector 3A projecting from one side surface to which a female connector of the electronic lock 1 is attached. After connecting to connector 4, unlock key 2
By pressing 01, the personal identification number is automatically sent to the electronic lock 1 to unlock it.

Inside the electronic key 2A, as shown in FIG. 8, an MPU (microprocessor) 202, an EEPROM (hereinafter abbreviated as "memory") 203 in which a control program and a personal identification number are stored, and is automatically activated when the power is turned on. A power-on reset circuit 204 for resetting the circuit to an initial state, a time constant circuit 205 for clock oscillation, an LED (light emitting diode) 206, an electronic buzzer 207, a female connector 208 for personal identification number registration, an electronic key 2A itself and an electronic key. A battery 209 serving as a driving power source for the first battery and a power source connection circuit 221 are provided. 210 to 214 are Zener diodes for absorbing abnormal voltage.

The male connector 3A has a shape that makes a pair with the female connector 4 of the electronic lock 1, and has a data output terminal 215 for transmitting a personal identification number and the like, and a status signal indicating the unlocked / locked state. There are four terminals, namely, a data input terminal 216 for receiving the power and a power supply terminal 217, 218 for supplying driving power to the electronic lock side. Further, as shown in FIG. 7, a waterproof rubber cap 220 is attached to the opening of the female connector 208 for registering the personal identification number.

Next, the unlocking operation of the electronic lock 1 and the electronic key 2A will be described with reference to FIGS. 9 and 10. 9 is a flowchart of the unlocking operation, and FIG. 10 is an explanatory diagram of the ringing operation of the electronic buzzer 207 incorporated in the electronic key 2A.

Now, it is assumed that a four-digit number "1234" is registered in advance in each of the memory 154 in the electronic lock 1 and the memory 203 in the electronic key 2A as a password for unlocking. The personal identification number can be freely rewritten using a master key or the like, as described later.

To unlock the electronic lock 1, first, the male connector 3A of the electronic key 2A is inserted into the female connector 4 of the electronic lock 1 (step S1 in FIG. 9). Next, when the unlock key 201 of the electronic key 2A is pressed (step S2), the MPU 20
2 detects this, buzzes the electronic buzzer 207 for a short time, controls the power supply connection circuit 221 to close its contact, and from the battery 209 in the electronic key 2A to the power supply terminal 2
Power terminals 159, 16 of the electronic lock 1 via 17, 218
Supply power for driving to 0. The power-on reset circuit 155 in the electronic lock 1 is activated by this power supply, and M
Registers (not shown) in the PU 151 are reset to the initial state to prepare for the unlocking operation.

After the power is supplied, the MPU 202 reads the personal identification number "1234" from the memory 203 and sends the personal identification number to the electronic lock 1 via the data output terminal 215 according to a predetermined transmission format (step S3). ). When the electronic lock 1 receives the personal identification number through the data input terminal 157, the electronic lock 1 reads the personal identification number “1234” set in the memory 154 and determines whether or not it coincides with the personal identification number sent from the electronic key 2A. Collate (step S4).

When the personal identification numbers match, as shown in FIG. 10A, the status signal "1" indicating that the collation results match is output from the data output terminal 158 and the motor drive circuit. An unlocking command signal is sent to 152 and 153 to start the unlocking operation of the hook 103 (step S5).

That is, the motor drive circuits 152 and 153, which have received the unlock command signal from the MPU 151, send drive pulses φ ₁ and φ ₂ having a predetermined phase difference to the drive coils 165 and 166 of the stepping motor 107, respectively. The motor 107 is rotated in the unlocking direction.
When the stepping motor 107 rotates, the worm 108 fixed to the motor shaft rotates, and the worm wheel 109 meshing with the worm 108 starts rotating.

When the worm wheel 109 starts to rotate, the pin 110 implanted on its side also rotates, and this pin 110 pushes the guide groove 119 of the shaft guide 120 fixed to the shaft 114, and the shaft 114 and the latch 106. Is moved in the unlocking direction (to the right in FIG. 4).

When it is moved in the unlocking direction, the latch 106 which has been engaged with the engaging groove 105 of the hook 103 until then is released from the engaging groove 105, and the entire hook 103 is hook spring 1.
The electronic lock 1 is unlocked by being pushed out of the body by 04. After unlocking, the stepping motor 107 continues to rotate further, and when the notch of the disk 111 formed integrally with the worm wheel 109 makes one rotation and reaches directly below the photo interrupter 113, the photo interrupter 1
13 detects this, stops the stepping motor 107, and completes the unlocking operation (step S6). The time from the sending of the personal identification number to the completion of the unlocking operation is about 1 second.

As described above, the photo interrupter 11
When 3 detects the notch and completes the unlocking operation, the electronic lock 1
The MPU 151 switches the status signal "1" which has been continuously output to the data output terminal 158 to "0" as shown in FIG. Electronic key 2A MPU2
When 02 detects the switching of the status signal from “1” to “0”, it determines that the unlocking of the electronic lock 1 is completed, and the electronic key 207 is set to “P” as shown in FIG. 10 (A). And the LED 206 is turned on to inform that the electronic lock 1 has been unlocked.

On the other hand, if the personal identification numbers do not match in step S4, the process proceeds to step S7, and the process ends without performing the unlocking operation. In this case,
As shown in FIG. 10B, the MPU 151 of the electronic lock 1 continues to send the status signal “0” to the data output terminal 158, and the status signal is never inverted to “1”.

The MPU 202 of the electronic key 2A monitors the status signal sent from the data input terminal 216 and inverts the status signal from "0" to "1" within a predetermined time (for example, within 1 second). If not, it is determined that the personal identification numbers do not match, and as shown in FIG. 10B, the electronic buzzer 207 beeps for a certain period of time, indicating that unlocking is impossible. Inform.

As described above, the electronic lock 1 is unlocked only when the personal identification number registered in the electronic key 2A and the personal identification number registered in the electronic lock 1 match. Therefore, the electronic lock 1 cannot be unlocked unless the user has an electronic key with the same personal identification number.

Next, regarding the second embodiment of the electronic key,
This will be described with reference to FIGS. 11 and 12. FIG. 11 is an external perspective view of the electronic key, and FIG. 12 is an electric circuit diagram thereof. The second embodiment is an example of a so-called ten-key type electronic key 2B (see FIG. 1). As shown in FIG. 11, the numeric keypad type electronic key 2B includes numeric keys and “#” and “*” keys instead of the unlock key 201 of the one-key type electronic key 2A described above. The so-called numeric keypad 219 is provided.
The electronic lock 1 is unlocked by inputting the personal identification number from 9.

The parts other than the numeric keypad 219 have basically the same configuration as the one-key type electronic key 2B described above, except that the control program stored in the memory 203 is different. The same parts are designated by the same reference numerals, and detailed description thereof will be omitted.

Next, the unlocking operation using the electronic key 2B will be described with reference to the flowchart of FIG. As is apparent from a comparison between FIG. 13 and FIG. 9 described above, steps S11 and S12 are different in that the unlocking operation of the ten-key type electronic key 2B is different from that of the one-key type electronic key 2A described above. Since the operation of other step portions is the same as that of FIG. 9 described above, the operation of other step portions other than the above two steps will be briefly described.

Now, it is assumed that a four-digit number "1234" is registered in advance in the memory 154 in the electronic lock 1 as a personal identification number for unlocking. No secret code is stored in the electronic key 2B. Therefore, when the ten-key type electronic key is used, the user needs to record the personal identification number set in the electronic lock in some way, such as by making a note or a personal identification number.

In order to unlock the electronic lock 1 with the electronic key 2B, after inserting the male connector 3B of the electronic key 2B into the female connector 4 of the electronic lock 1 (step S10 in FIG. 13),
Press the "*" key on the numeric keypad 219 (step S1)
1). As a result, the power supply connection circuit 221 operates and the power supply 209 is started to be supplied to the electronic lock 1.

Next, the numbers "1", "2", "3" and "4" of the personal identification number are sequentially input from the ten-key 219, and finally the "#" key which notifies the end of input is pressed (step S1).
2). The MPU 202 sends the personal identification number input according to a predetermined transmission format to the electronic lock 1 (step S13).

Each time each key of the numeric keypad 219 is pressed, the electronic buzzer 207 beeps to notify that the key has been pressed. Also, after pressing the "*" key, if no key operation is performed for 15 seconds, the power is automatically turned off. The electronic lock 1 checks whether or not the personal identification number sent from the electronic key 2B matches the personal identification number stored in the memory 154 (step S1).
4).

If they match, a status signal "1" indicating that the matching results match is output to the electronic key 2B, and the motor drive circuits 152 and 153 are also output.
To start the unlocking operation (step S15). Then, when unlocking is completed, the electronic buzzer 207 beeps, the LED 206 is turned on, and the process ends (step S16).

On the other hand, if they do not match, the electronic buzzer 207 beeps for a certain period of time to notify that it cannot be unlocked (step S1).
7), the process ends. Numeric keypad 2 as above
The electronic lock 1 is unlocked only when the personal identification number input from 19 and the personal identification number registered in the electronic lock 1 match. Therefore, the electronic lock 1 cannot be unlocked unless the personal identification number is known.

Next, the process of changing the personal identification number registered in the electronic lock 1 will be described with reference to the flowchart of FIG. In addition, in order to perform the process of changing the personal identification number, the ten-key type electronic key 2B shown in FIG.
Alternatively, a master key having the same configuration as this may be used. In the following description, the electronic key 2B of FIG.
Take as an example the case where is used as a master key for rewriting.

When changing the personal identification number registered in the electronic lock 1, after connecting the male connector 3B of the ten-key type electronic key 2B to the female connector 4 of the electronic lock, first, the personal identification number currently registered is changed. The electronic lock 1 is input to enter the unlocked state (step S30). In addition, at the time of factory shipment, "0000" is registered in the electronic lock 1 as an initial password. Therefore, when the personal identification number changing process is performed first after shipping, "0000" may be input.

Then, the channel number for which the personal identification number is to be changed is selected. That is, as long as the memory 154 in the electronic lock 1 has room, a plurality of personal identification numbers can be registered. Therefore, in order to identify this personal identification number that can be registered, it is distinguished by the channel number. In the case of FIG. 14, C
The case where three channels H1 to CH3 are provided is shown.

When changing the personal identification number of the first channel CH1, the numeric keypad 219 of the electronic key 2B is pressed "1 *" (step S31 in FIG. 14). This "1 *" signal is
It is sent to the electronic lock 1 in a predetermined transmission format. Then, the status signal "1" is returned from the electronic lock 1 to the electronic key 2B. As a result, the LED 206 of the electronic key 2B is turned on and off to notify that the personal identification number changing mode of the channel CH1 has been entered.

In this state, after inputting the desired four-digit personal identification number (step S32), the "#" key indicating the end of the personal identification number is pressed (step S33), and the personal identification number is transmitted in a predetermined transmission format. Sent to electronic lock 1. The MPU 151 of the electronic lock 1 transfers the transmitted personal identification number to the address position of the first channel CH1 of the memory 154, erases the old personal identification number stored until then, and stores the new personal identification number. When the registration of the new personal identification number is completed, the status signal "1" sent from the electronic lock 1 to the electronic lock 2B is switched to "0", and the electronic key 2B sounds the electronic buzzer 207 only once. In addition to notifying that the personal identification number of the first channel has been changed, the blinking LED 206 is turned off.

By repeating the above-mentioned changing process similarly for each of the second channel CH2 and the third channel CH3 (steps S34 to S39), the password of the desired channel can be rewritten to any desired new password. . It should be noted that when the registration of the second channel CH2 is completed, the electronic buzzer 207 beeps twice to notify that the personal identification number of the second channel has been changed, and the LED 206 is turned off (step S36). Further, when the registration of the third channel CH3 is completed, the electronic buzzer 207 is sounded three times, "peep, pee, pee" to notify that the secret code of the third channel has been changed, and the LED 206 is turned off (step S39). ).

When the ten key 219 is not operated for a predetermined time (for example, 15 seconds) during the changing process, the power is automatically turned off and the process is terminated. Next, the process of changing the personal identification number registered in the one-key type electronic key 2A will be described.
Note that only one personal identification number is registered in the one-key type electronic key 2A.

When changing the personal identification number of the one-key type electronic key 2A, the waterproof cap 220 (see FIG. 7) on the bottom of the electronic key 2A is removed to expose the female connector 208 for personal identification number registration. The male connector 3B of the electronic key 2B, which serves as a master key for changing the personal identification number, is connected to the connector 208.

Then, as in the case of the process of changing the personal identification number of the electronic lock, the ten-key 219 of the electronic key 2B serving as the master key may be operated to input the personal identification number. As a result, the personal identification number input from the numeric keypad 219 of the electronic key 2B is sent to the electronic key 2A, and the new personal identification number is registered in place of the old personal identification number stored in the memory 203.

In the above embodiment, the personal identification number is 4
Although the case where the number of digits is used and the number of registered channels of the personal identification number registered in the electronic lock is 3 is illustrated, the number of digits of the personal identification number and the number of registered channels are MP.
It can be set freely according to the requirements of U and memory.

Further, although the above-mentioned embodiment illustrates the case where the electronic lock of the present invention is incorporated in the conventional padlock, the invention is not limited to the padlock and can be applied to locks of other shapes. Further, in the above-described embodiment, the personal identification number is transmitted from the electronic key to the electronic lock only once, but the personal identification number may be transmitted a plurality of times and collated a plurality of times.

[0064]

According to the electronic lock and the electronic key of the present invention described above, the following excellent effects can be obtained. (1) In the case of the conventional mechanical lock, there is a limit to the type of the unevenness of the key ridge, and since the unevenness itself is visible, it is extremely easy to forge and it is difficult to ensure safety. On the other hand, when the electronic lock and the electronic key according to the present invention are used, the personal identification number is used as a key, and the personal identification number is converted into a predetermined electric signal and transmitted from the electronic key to the electronic lock for unlocking. Therefore, a huge number of PINs can be adopted, and because the PINs themselves are invisible, forgery is extremely difficult, and the security as a key can be significantly improved. . Also, unlike mechanical locks,
Unlocking by picking is impossible and there is no need to worry about mischief. (2) Since the personal identification number can be rewritten, the user can freely rewrite the personal identification number and the usability of the key can be improved. (3) Since the power is supplied from the electronic key side to the electronic lock, it is not necessary to incorporate a power source in the electronic lock,
The electronic lock can be made smaller, and battery replacement or the like is not necessary. Therefore, the electronic lock can be left for a long time and can be maintenance-free. Also, unless power is supplied,
Since the internal mechanism of the electronic lock cannot operate at all, the safety as a lock can be further enhanced. (4) The electronic lock body has a waterproof structure that prevents rain and water from entering the lock and ruining the electric circuit and operating mechanism, and can be used safely even in places exposed to wind and rain outdoors. be able to. (5) If the personal identification number is sent by pressing only one key, the operation becomes extremely simple. (6) When the personal identification number is sent out using the numeric keypad, it is possible to unlock a large number of electronic locks with different personal identification numbers using one electronic key, and various uses depending on the purpose. You can

[Brief description of drawings]

FIG. 1 is a principle configuration diagram of the present invention.

FIG. 2 is an external view of an embodiment of an electronic lock according to the present invention.

FIG. 3 is an external view of an electronic lock with a waterproof rubber cap removed.

FIG. 4 is a front view showing the internal structure of the electronic lock.

FIG. 5 is a side view showing the internal structure of the electronic lock.

FIG. 6 is an electric circuit diagram of an electronic lock.

FIG. 7 is an external perspective view of an embodiment of a one-key type electronic key according to the present invention.

FIG. 8 is an electric circuit diagram of a one-key type electronic key.

FIG. 9 is a flowchart of an unlocking operation of an electronic lock using a one-key type electronic key.

FIG. 10 is an explanatory diagram of a ringing operation of an electronic buzzer incorporated in the electronic key.

FIG. 11 is an external perspective view of an embodiment of a ten-key type electronic key according to the present invention.

FIG. 12 is an electric circuit diagram of a ten-key type electronic key.

FIG. 13 is a flowchart of an unlocking operation of an electronic lock using a ten-key type electronic key.

FIG. 14 is a flowchart of an operation of changing a personal identification number of an electronic lock and an electronic key.

[Explanation of symbols]

 1 electronic lock 2A one-key type electronic key 2B ten-key type electronic key 3A electronic key 2A connector 3B electronic key 2B connector 4 electronic lock 1 connector 5 electronic lock 1 secret code storage means 6 electronic lock 1 secret code reception Means 7 Personal identification number collating means for electronic lock 1 Unlocking means for electronic lock 1 Personal identification number storage means for electronic key 2A 10 Personal identification number sending command means for electronic key 2A 11 Personal identification number sending means for electronic key 2A 12 Electronic key 2B PIN code input means 13 PIN code sending means for electronic key 2B 14A Power supply for electronic key 2A 14B Power supply for electronic key 2B

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Keigo Yoshida 322-7 Notsubo, Nakahara-ku, Kawasaki-shi, Kanagawa Inside Art Technology Center Co., Ltd. Inside the Equipment Co., Ltd. (72) Inventor Oshima Family 160 Notsubo, Nakahara-ku, Kawasaki-shi, Kanagawa No. Signal Equipment Co., Ltd.

Claims (10)

[Claims] 1. A connector connected to an electronic key, a personal identification number storing means for storing a personal identification number for unlocking, and a personal identification number receiving means for receiving a personal identification number sent from an electronic key through the connector. And a personal identification number collating means for collating the received personal identification number with the personal identification number stored in the personal identification number storage means, and outputting an unlocking command signal when both coincide with each other, and the unlocking command signal. An electronic lock comprising: an unlocking means for receiving and unlocking the lock. 2. The electronic lock according to claim 1, wherein the personal identification number stored in the personal identification number storage means is rewritable. 3. The electronic lock according to claim 1 or 2, wherein power is supplied from the electronic key side through the connector. 4. The electronic lock according to claim 1, wherein the body has a waterproof structure. 5. A connector connected to an electronic lock, a personal identification number storing means for storing a personal identification number for unlocking, and a personal identification number sending command for outputting a personal identification number sending command signal when operated at the time of unlocking. And a personal identification number sending means for reading the personal identification number stored in the personal identification number storage means, converting the personal identification number into an electrical signal, and transmitting the electrical signal to the connector when the personal identification number transmission command signal is received from the personal identification number transmission instruction means. An electronic key characterized by having. 6. The electronic key according to claim 5, wherein the personal identification number stored in the personal identification number storage means is rewritable. 7. The electronic key according to claim 5, wherein power is supplied to the electronic lock via the connector. 8. A connector connected to an electronic lock, a personal identification number input means for inputting a personal identification number when unlocking, and a personal identification number input from the personal identification number input means converted into an electric signal and sent to the connector. An electronic key, which comprises: 9. The electronic key according to claim 8, wherein the personal identification number input means is a ten-key pad. 10. A power source is supplied to the electronic lock via the connector.
The described electronic key.