JP2002285744A - Locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking device which can prevent picking thereof by employing a relatively simple device without largely changing a conventional locking system. SOLUTION: The locking device is comprised of (a) a key, (b) a mechanical locking section, (c) an electric locking section, and (d) a time counting means. (a) The key includes a digital code section storing digital code information therein, and a key ridge section having notches conforming to key ridges. (b) The mechanical locking section assumes an unlocking position or an unlockable position when the notches thereof conform to the key ridges. (c) The electric locking section assumes an unlocking position when digital codes correspond to each other. (d) When one of the mechanical locking section and the electric locking section assumes the unlocking position, the time counting means starts counting of time. If the other locking section assumes the unlocking position within a predetermined waiting time, entire unlocking is permitted. On the other hand, if the other locking section is not switched to assume the unlocking position within the predetermined waiting time, the locking section already having assumed the unlocking position is canceled, or the other locking section is inhibited from assuming the unlocking position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device used for doors of buildings such as houses and buildings, safes, automobiles, and the like, and more particularly, to a security device using both an electric lock and a mechanical lock or using an electric lock alone. High locking device.

[0002]

2. Description of the Related Art Recently, crimes involving the opening of cylinder locks (called picking) using tools such as tweezers and wires, and the number of thieves entering the thieves, have become a kind of social problem.
A general cylinder lock is also called a pin tumbler lock, and the cylinder lock has a double structure of a fixed outer cylinder and a rotating inner cylinder. In a state where the key is not inserted, the member called a tumbler pin penetrates between the outer tube and the inner tube, so that the inner tube cannot rotate and cannot be unlocked. When the key is inserted, when the shape of the key matches the position and height of each tumbler pin, all the tumbler pins penetrated between the outer cylinder and the inner cylinder come off and the inner cylinder can be rotated, Can be unlocked. In this cylinder lock, it is said that picking is relatively easy because the tumbler pins are arranged in a straight line.

On the other hand, remote control keys and the like have been proposed for the purpose of preventing picking and providing convenience. Just like pressing a remote control button near a door, as in the case of practical use in automobiles and the like, infrared and radio waves are used. Can be locked and unlocked. Further, a system for unlocking with a password using a numeric keypad has been developed.

Further, Japanese Patent Application Laid-Open No. 11-315653 discloses that a member operated by an electronic code is added to a part of a normal cylinder lock, and unlocking is performed only when the electronic code matches in addition to the matching of the key shape. A possible electromechanical cylinder lock is described.

[0005]

However, the conventional locking and
Each of the unlocking systems has the following problems.
In a password unlocking system using a numeric keypad, the device tends to be large, and if the password is leaked or decrypted, there is no effective means for preventing picking. Even with an unlocking system using a remote control key, there is no effective way to prevent picking when an electronic code is decoded.

Also, according to the system described in Japanese Patent Application Laid-Open No. 11-315653, the mechanical unlocking information and the unlocking information by the electronic code are not linked. Will be possible.

That is, the present invention has been made in view of such a conventional problem, and a locking device capable of preventing picking with a relatively simple device without largely changing a conventional locking system. It is intended to provide a device.

[0008]

Means for Solving the Problems The invention according to the present application is:
It is as follows.

[1] (a) a key having a digital code portion having digital code information and a key portion having a key-shaped notch, and (b) an unlocked state or an unlockable state when the key shapes match ( Hereinafter, the unlocked state or the unlockable state is simply referred to as an unlocked state.); (C) an electric lock that is unlocked when the digital codes match; and (d) time measurement. Means for measuring the time from when the mechanical lock or the electric lock is unlocked first, and fully open when the other is unlocked within a predetermined waiting time. Permit the lock, but if the other does not become unlocked within a predetermined waiting time, cancel the unlocked state of the already unlocked lock or change the other lock to the unlocked state Locking device characterized by prohibiting .

[2] The electric lock includes a motor for driving a locking / unlocking operation and a control / calculation for judging coincidence of digital codes and controlling the motor with reference to the time measuring means. Means for controlling the unlocked / locked state of the electric lock to permit full unlocking, canceling the unlocked state of the electric lock when already in the unlocked state, or the locked state The lock device according to the above [1], wherein each operation of prohibiting the electric lock from changing to the unlocked state in the case of (1) is performed.

[3] The above [1] or [2], wherein the digital code changes with time.
The locking device according to any one of the preceding claims.

[4] The key has a clock, a memory storing a digital code, and a code generator for referring to the memory in accordance with the time of the clock. The locking device according to [3], wherein the digital code is generated.

[5] The locking device according to the above [4], wherein the digital code is transmitted from the key to the electric lock by wireless communication.

[6] The mechanical lock has a locking tongue for locking by engagement with a hole on the wall side, and the electric lock has a latching part fitted with the locking tongue. When the electric lock is in the locked state, the movement of the locking tongue is prohibited by fitting the locking tongue and the latch. When the electric lock is in the unlocked state, the locking tongue and the latch are locked. The locking device according to any one of the above [1] to [5], wherein the engagement is released to make the locking tongue movable, and the mechanical lock is allowed to be unlocked only during that period.

[7] The above-mentioned [1] to [1], wherein the mechanical lock and the electric lock are independently installed without mechanically fitting or engaging with each other.
The locking device according to any one of [5].

[8] The following (1a) to (1d): (1)
a) a clock for generating time information according to the user's unlocking operation time, (1b) a memory for storing a time-to-digital code comparison table, and (1c) a reference table stored in the memory. A code generator for generating a digital code corresponding to the generated time information;
d) A key having a transmitter for transmitting time information and a digital code to the lock side, and the following (2a) to (2d): (2a) a receiver for receiving time information and a digital code from the key side, (2b) time (2c) Refer to the time / digital code comparison table stored in the memory, and find the combination of the time information and the digital code received from the key side in the memory. Computing means for determining whether or not (2d) locking /
A lock having a controller that controls a motor for driving an unlocking operation.

[0017]

[9] The key has a key-side memory rewriting means for rewriting a comparison table between a time and a digital code stored in a memory, and the lock is a table for comparing a time and a digital code stored in a memory. 9. The lock-side memory rewriting means for rewriting the key, the key-side and lock-side rewriting means each have a communication means, and the key-side and lock-side memories can be simultaneously rewritten by communication. Digital locking device.

[10] (1a) A key in which digital code information is encoded in a key form;
(2c): (2a) code reading means for recognizing a key form and reading a digital code, (2b) a memory storing a digital code, and (2c) a digital code read from the key form and stored in the memory. A lock having arithmetic means for comparing codes.

[11] As the electric lock, the above-mentioned [8] or

The locking device according to the above [5], wherein the digital locking device according to [9] is used.

[12] As the electric lock, the above [1]
[0] The locking device according to [2], wherein the digital locking device according to [0] is used.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a flow chart for explaining the overall configuration of a locking system according to the present invention. The key used in the present invention has a normal key pile and a digital code part, and when the user tries to unlock (S1),
The lock side determines whether the key key shapes match (S2a) and the digital code (ID) matches (S2d). The acquisition of the key-shaped information is generated by an act of inserting a normal mechanical key into a keyhole and rotating the key. Acquisition of digital code information differs depending on how the digital code section is configured and how the digital recognition on the lock side is configured, and a specific example will be described later. Also, which of S2a and S2d is performed first depends on the configuration of the mechanical lock and the configuration of the electric lock.

When the key shapes match, the mechanical lock is unlocked or unlockable. In the flowchart of FIG. 1, this is represented as an unlocked state: AO = 1 (S3a). On the other hand, when the digital codes match,
The electric lock enters an unlocked state or an unlockable state. In the flowchart of FIG. 1, this is represented as an unlocked state: DO = 1 (S3d). In the actual configuration, the unlock signal (unlock enable signal) AO = 1 and / or D
Although O = 1 may be transmitted in some cases, particularly for mechanical locks, it may not be necessary to transmit a signal as described later in a specific example.

Then, the time is measured from the time when the mechanical lock or the electric lock is first unlocked (unlockable state) (S4). If the other is unlocked (unlockable state) within a predetermined waiting time (TT time) set in advance, all locks are unlocked and the door can be opened (S5, S6). However, the other lock is unlocked (unlockable state) within the TT time.
If not, cancel the unlocked state of the mechanical or electric lock that was previously unlocked (unlockable state), or the remaining locks that have not yet been unlocked are in the unlocked state. Is prohibited (S5, S7). In S7 of the flowchart of FIG. 1, the locked state of the mechanical lock is set to AO =
0, the locked state of the electric lock is represented by DO = 0.

As described above, in this locking device, since the mechanical lock and the electric lock are temporally linked to each other, both the mechanical lock and the electric lock have a limited waiting time for picking. Must be opened inside, which is virtually impossible.

Here, the waiting time can be appropriately set. For example, the waiting time is 1 second or more and 20 seconds or less, preferably
It can be set within 10 seconds, more preferably within 5 seconds.

In the lock device of the present invention, it is preferable that the digital code sent from the key to the electric lock changes with time. That is, even if the digital code is decrypted due to a change in the digital code, after a certain period of time has elapsed, the code has already been changed, so that the electric lock cannot be unlocked and picking cannot be performed. A more difficult locking device can be provided.

Each means and each component constituting the locking device of the present application includes hardware (including a computer or the like) or a combination of hardware and software.

Further, the locking device of the present invention can be applied not only to doors of buildings such as houses and buildings, but also to all devices that need to be locked, such as safes and automobiles.

Next, a description will be given based on a specific example.

<Example of Configuration of Entire Locking Apparatus> FIG. 2 shows an example of the locking apparatus of the present invention. In this figure, the wall 12 is partially hollowed out, and FIG. 3 is an enlarged view of the locking device. In this example, the mechanical lock 13 attached to the door 11 allows the inner cylinder to rotate when the key of the key coincides with the lock, similar to a normal mechanical lock.
Becomes movable. The electric lock 20 has a motor, a timer (time measuring means), and control / calculating means for judging coincidence of digital codes and performing motor control or the like with reference to the timer. The latch 22 can be moved up and down by a motor. On the other hand, the locking tongue 14 is provided with a hole (a recess or the like) that fits the latch 22. . FIG.
3 shows a locked state, in which the latch 22 and the locking tongue 14 are fitted. In this state, even if the key locks match and the mechanical lock becomes unlockable, the locking tongue 14 is locked. The entire lock cannot be released because the part cannot move left and right.

In order to release all locks with the locking device of this embodiment, first, a digital code is sent from the key to the electric lock, and when the digital code matches the digital code on the electric lock side, the latch is moved upward. It moves and is pulled out from the locking tongue. In this state, when the unlocking operation of the mechanical lock is performed by the key having the same key mountain, the locking tongue can move rightward, so that the lock can be fully unlocked.

However, if the mechanical lock is not unlocked within the set waiting time after the electric lock is unlocked (ie, the latch is pulled out of the locking tongue). Then, the latch portion descends to lock the locking tongue portion again. Therefore, in order to pick this locking device,
Since the mechanical lock must be unlocked within a limited time after unlocking the electric lock, breaking both the electric lock and the mechanical lock within a very limited time of about several seconds Is extremely difficult.

The key used together with the lock having the electric lock and the mechanical lock has a conventionally known key ridge and a digital transmission section capable of transmitting a digital code. FIG. 4 schematically shows one example. This key 24 is used together with a normal key pile 25 to
It has. When the key is inserted into the keyhole, the insulator 27
Between the contacts 28a and 28b drawn from the digital transmission section through the inside or surface of the keyhole, conduction is made by the metal member inside the keyhole, which triggers the transmission of the digital code. Instead of such a contact system, a key may be provided with a switch to serve as a trigger for digital code transmission.

The transmission of the digital code may be carried out by a wired or wireless communication system. However, in consideration of the miniaturization and simplicity of the device, the digital code is represented by radio wave communication using short waves or the like or optical communication using infrared rays or the like. Wireless communication system is preferred. The digital transmission section provided on the key has such a transmitting device and a memory storing the digital code. Correspondingly, the electric lock side also has a digital code receiver, and FIG. 3 schematically shows the antenna 21 for radio wave reception. In the case of infrared reception, however, the light receiver is located outside the wall. It may be provided on the side.

The digital code transmitted and received may be a fixed code, but in the present invention, the digital code is preferably changed. At this time, it is preferable that the digital code automatically changes with the passage of time without the user's awareness.

<Structural Example 1 of Transmit / Receive Digital Code> An example of a method of changing the code to be transmitted / received will be described with reference to FIG.

In this example, a clock 51 is provided on the key side, and when a command to transmit a digital code is received, the time of the clock is transmitted to the code generator 52.
The code generator refers to the memory 53, reads a digital code from a memory address corresponding to the time of the clock, and sends the code to the transmitter. The transmitter 54 pairs the clock time and the digital code and transmits them as communication data 55 by radio waves, infrared rays, or the like. FIG. 6 shows an example of correspondence between a memory address and a code in four digits in a binary system for simplicity. For example, address 001
When a transmission instruction is received at a certain time corresponding to 0, data is transmitted as a pair of a clock time and a code 0110.

On the other hand, on the lock side, this is received by the receiver 56 and sent to the decoder 59 (arithmetic means). When the decoder refers to the corresponding address 0010 in the memory 58 based on the clock time information, the code 58 is stored in the memory 58 as shown in FIG. When the coincidence is confirmed in this way, information indicating the coincidence is sent to the controller 60, and a drive command is transmitted to the motor 62 by referring to the timer 61 as necessary according to the configuration of the mechanical lock, and Unlock the lock.

In this example, since the code information in the memory on the key side and the code information in the memory on the lock side are the same, the digital code can be changed only by the clock on the key side. . Note that the addresses and codes of the key-side memory and the lock-side memory do not have to be completely the same, as long as they can correspond according to a specific rule. In addition, although the clock time is used together with the code as data for transmission and reception, in this example, the same operation can be performed even if an address is transmitted. Furthermore, the clock here is not only a clock that gives an actual time such as a month, a day, a time, and a second, but also a clock that is configured by a pulse generator, a pulse counter, and the like, and simply gives the number of pulses. Good.

In the example of FIG. 6, for simplicity, the code is shown in only four digits in binary. For example, considering a system in which the code changes in seconds (1 day = 86400 seconds) with one day as a delimiter, (1
86400 addresses are required. Therefore, for example, when a code length of 4 bytes (32 bits) is prepared as a memory capacity, 2 ³² (about 4.3 billion) codes can be obtained. Therefore, 2 ³² (approximately 4.3 billion) different codes can be selected for one address out of 86400 addresses.

[0041]

(Equation 1)

A lock system for a door can be provided.

Further, in the present invention (applicable to all embodiments including the present configuration example), a means for prohibiting access at the same clock time is provided in order to prevent a digital code from being decoded. preferable. That is, for example, in the example of FIG. 5, if the clock time data and the code information received by the decoder 59 are decoded and the clock time data is the same as the clock time data received shortly before, this is obvious. Is illegal access. Therefore, the time data of the received clock is held for a predetermined time (HT time), and when the same clock time is received within the HT time, reference to the code correspondence table of the memory 58 is prohibited, for example. It is preferable to configure the logic circuit so as not to allow unlocking. Here, the HT time is determined by considering how long the digital code is changed, and considering a time lag between the same keys when there are a plurality of identical keys such as when a family has a spare key. Can be set as appropriate. The HT time can be set, for example, in a range of about 30 seconds to 5 minutes, for example, about 60 seconds.

<Structural Example 2 of Transmitting / Receiving Digital Code> Different modes of changing the digital code include:
By installing a synchronized clock indicating the same time on the key side and the lock side, it is possible to transmit the digital code with time by transmitting only the digital code without transmitting clock time information as transmission data. Can be changed. That is, when a clock is also provided on the lock side, instead of referring to the memory 58 based on the time information of the clock received by the decoder 59 in the example of FIG. Is referred to the memory 58 based on. According to this method, the decoding of the digital code is extremely difficult and the security is high. However, if the clocks on the key side and the lock side are out of synchronization, the unlocking cannot be performed. (Reset) must be performed frequently, which tends to increase the size of the device.

<Exemplary Configuration 3 of Transmitting / Receiving Digital Code> Different modes of changing the digital code to be transmitted / received will be further described.

In this method, the security is further improved by rewriting the code pattern on the key side and the lock side as needed. One example is shown in FIG. In this example, the memory rewrite units 70 and 71 on the key side and the lock side, respectively.
Is provided, and the memories are changed at the same time by communicating between the memory rewriting units on the key side and the lock side when necessary. Normally, the lock side becomes the master, and it is convenient to rewrite the memory on the key side according to the data on the lock side. When rewriting the memory, for example, an input unit 72 such as a keyboard (numeric keypad) is provided on the lock side, and the memory is changed according to the input data. The memory rewrite unit on the lock side includes a necessary memory and an arithmetic unit.

The advantage of such a memory rewritable system will be described with reference to FIG. First, in the digital code changing method described with reference to FIGS. 5 and 6, a certain time is assigned to one address. Then,
When the time has elapsed for one cycle, the same address is referred to and the same digital code is transmitted from the key side to the lock side as an unlock request signal. Then, as described above, when one day is used as a unit, the same digital code is used at exactly the same time. In practice, by allocating one cycle to an odd time, the length of one cycle is also unknown, and the same time does not become the same code. It will be repeated periodically.

Therefore, the memory rewritable method is a method of rewriting a code stored at an address corresponding to time. FIG. 11A is a code correspondence table before rewriting. The address 00001 indicated by the arrow is
Suppose that this is a place to store code for a particular time.
Before rewriting, the code 0100 is stored. However, by rewriting, the code 01100 is stored as shown in FIG.
01 has been replaced. At this time, both codes are rewritten at the same time by communication between the lock side and the key side. As a result, the order of the codes changes, so that even if the codes are changed in a cycle of one day, different codes correspond to the same time, making unauthorized unlocking even more difficult. In addition, when one of the keys is lost, the code of the remaining key is rewritten, so that the lost key cannot be used and unauthorized unlocking can be prevented.

FIG. 12 schematically shows a method in which communication for rewriting between the key side and the lock side is performed by a contact method. That is, after unlocking and entering the room, the key box 80 connected to the door lock
When the key 81 is pointed to the terminal, the terminal 82 comes into contact with the terminal on the lock side to enable communication. Thus, by inputting from the ten key 83, the digital codes on the lock side and the key side are simultaneously rewritten.

The memory rewrite communication between the key side and the lock side may be performed by non-contact communication such as infrared communication or radio wave communication.

<Structural Example 4 of Transmitting / Receiving Digital Code> In the digital code changing method described above, the transmitted / received code changes. However, it is also useful to add a fixed code to the transmitting / receiving digital code. is there. For example, as shown in FIG. 13, even in the case where a fixed code is added before the variable code and the memory is rewritten (described in the configuration example 3 of the transmission / reception digital code), the fixed code portion prohibits the rewriting. By providing the fixed code portion, the effect of preventing unauthorized unlocking can be further enhanced, and this fixed code can be used, for example, as a group ID. For example, when a locking device is provided at the entrance of an apartment and each room, and when a locking device is provided at each of the entrance of a company and each floor, the unlocking of a representative lock such as the entrance of an apartment or the entrance of a company is performed by a fixed code. In this way, an electric lock according to the present invention using a variable code (or both a variable code and a fixed code) is used as an individual lock such as an entrance for each room or each floor. With such a configuration, the security of the individual lock can be enhanced without obstructing the opening / locking of the representative lock that needs to be shared by many people. The method of adding the fixed code can be added to the method described in the configuration example 1 or 2 of the transmission / reception digital code.

<Other Examples of Configuration of Entire Locking Apparatus> In the example shown in FIGS. 2 and 3 described above, the structure of the latch portion and the locking tongue that fits in the locking portion are formed by the latch portion. The configuration is not limited to that shown in this example as long as the configuration is such that movement can be prevented.

Next, FIG. 7 shows another embodiment of the present invention. In this example, the electric lock 30 is provided completely independently of the mechanical lock 13. Electric lock 20 shown in FIG.
Then, instead of moving the latch 21 up and down, the locking tongue 31 of the electric lock 30 is moved left and right,
Locking is performed.

In the configuration in which the electric lock and the mechanical lock are provided separately and independently as described above, it is determined whether the key shapes match (S2 in FIG. 1).
a) and digital code coincidence determination (S2d in FIG. 1)
May be performed first. However, when the mechanical lock is unlocked first, a means for detecting the unlocked state is provided,
If the electric lock does not enter the unlocked state within a predetermined TT time after the mechanical lock is unlocked, the electric lock is prohibited from being changed to the unlocked state (S5, S7 in FIG. 1). When the user or picker gives up unlocking and returns the mechanical lock, AO =
0, DO = 0, and return to the initial state.

<Other Methods of Digital Code Transmission / Reception> In the above description, wireless communication has been described as a digital code transmission / reception method. However, a code may be physically assigned to the key side. For example, in the key 33 shown in FIG.
To 34d) digital code part 3 representing heights 1 and 0
4 is provided. This digital code can be read non-contactly by a code reading means such as an optical sensor or a magnetic sensor on the lock side. Then, the digital code read from the key form is compared with the code stored in the memory by the arithmetic means with reference to the memory storing the digital code of the lock side, and when they match, the unlock information of the electric lock is obtained. It may be generated.

Further, as shown in FIG. 9, a digital code section 37 may be constituted by a bar code (or black point), a magnetic point or the like on the key 36, and this may be read by the lock side.

Each of these keys has a mechanism for electrically locking a latch tongue of a mechanical lock as shown in FIG. 2 and a mechanism for separately providing an electric lock as shown in FIG. Applicable to both. However, it is inferior to the above-described embodiment having a memory on the key side in that the digital code is fixed, and the number of different codes is limited to some extent, or the code becomes large when the number of codes is increased.

<Embodiment of Using Electric Lock Alone> In the above description, it is possible to use the electric lock portion alone as a digital locking device. At this time, the "key" in the digital locking device does not have to be in the form of a so-called key, but (1a) a clock for generating time information according to a user's unlocking operation time, (1b)
A memory for storing a time / digital code comparison table,
(1c) a generator for reading a digital code corresponding to the generated time information by referring to a comparison table stored in a memory; and (1d) a transmitter for transmitting the time information and the digital information to the lock side, There is no particular limitation as long as it can store memory rewriting means, input means for notifying the user of unlocking, and the like. Therefore, cards (magnetic cards, contact / contactless IC cards), mobile phones,
It is also possible to provide a digital clock, a digital camera, a car digital key, and the like with the key function of the digital locking device.

As a method for changing the transmission / reception digital code, the methods described in the configuration examples 1 to 4 of the transmission / reception digital code are particularly preferable.

[0060]

According to the present invention, it is possible to provide a locking device that can prevent picking with a small change without significantly changing the conventional lock system with a relatively simple device.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating an overall configuration of a locking system according to the present invention.

FIG. 2 is a diagram illustrating an example of a locking device.

FIG. 3 is a partially enlarged view of the locking device of FIG. 2;

FIG. 4 is a diagram showing an example of a key.

FIG. 5 is a diagram illustrating an example of a method of changing a code to be transmitted and received.

FIG. 6 is a diagram showing an example of a correspondence between a memory address in a memory and a digital code;

FIG. 7 is a diagram showing an example of a locking device.

FIG. 8 is a diagram showing an example of a key.

FIG. 9 is a diagram illustrating an example of a key.

FIG. 10 is a diagram illustrating an example of a different method for changing a code to be transmitted / received.

FIG. 11 is a diagram illustrating an example of a correspondence between a memory address in a memory and a digital code, and how the digital code is changed by rewriting.

FIG. 12 is a diagram schematically showing a method of performing contact-based communication for rewriting between the key side and the lock side.

FIG. 13 is a diagram for explaining a method of using a fixed code and a variable code as transmission / reception digital codes.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Door 12 Wall 13 Mechanical lock 14 Locking tongue 20 Electric lock 21 Antenna 22 Latch 24 Key 25 Key mountain 26 Digital transmission unit 27 Insulator 28a, 28b Contact 30 Electric lock 31 Locking tongue 51 Clock 52 Code Generator 53 Memory 54 Transmitter 55 Communication data 56 Receiver 58 Memory 59 Decoder 60 Controller 61 Timer 62 Motor 70 Memory rewrite unit 71 Memory rewrite unit 72 Input unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E250 AA02 AA03 AA12 AA14 AA21 BB02 BB08 BB09 BB65 BB66 BB67 CC19 DD03 DD06 DD07 EE02 EE17 FF22 FF25 FF28 FF33 FF34 FF36 FF38 FF44 GG07 GG11 GG01 GG03 GG01 GG03

Claims (12)

[Claims] (A) a key having a digital code portion having digital code information and a key portion having a key-shaped notch; and (b) an unlocked state or an unlockable state when the key shapes match (hereinafter, referred to as "key"). , An unlocked state or an unlockable state is simply referred to as an unlocked state), (c) an electric lock which is unlocked when the digital codes match, (d) time measuring means The time is measured from when the mechanical lock or the electric lock is unlocked first, and when the other is unlocked within the predetermined waiting time, it is fully unlocked. And if the other does not unlock within the predetermined waiting time,
A locking device for canceling an unlocked state of a lock already in an unlocked state or prohibiting another lock from changing to an unlocked state. 2. The electric lock according to claim 1, further comprising: a motor for driving a locking / unlocking operation; and a control / arithmetic means for judging a coincidence of a digital code and controlling said motor with reference to said time measuring means. By controlling the unlocked / locked state of the electric lock, allowing full unlocking, canceling the unlocked state of the electric lock when already in the unlocked state, or changing to the locked state 2. The locking device according to claim 1, wherein each operation of prohibiting the electric lock from changing to the unlocked state in a certain case is performed. 3. The locking device according to claim 1, wherein the digital code changes with time. 4. The key has a clock, a memory storing a digital code, and a code generator that refers to the memory in accordance with the time of the clock. 4. The locking device according to claim 3, wherein the digital code is generated. 5. The locking device according to claim 4, wherein the digital code is transmitted from the key to the electric lock by wireless communication. 6. The mechanical lock has a locking tongue for locking by engagement with a hole on the wall side, and the electric lock has a latch to fit with the locking tongue. When the electric lock is in the locked state, the movement of the locking tongue is prohibited by the engagement of the locking tongue and the latch. When the electric lock is in the unlocked state, the engagement of the locking tongue and the latch is performed. The locking device according to any one of claims 1 to 5, wherein the engagement is released to make the locking tongue movable, and the unlocking of the mechanical lock is permitted only during that period. 7. The device according to claim 1, wherein the mechanical lock and the electric lock are independently installed without mechanically engaging or engaging with each other. The locking device according to any of the preceding claims. 8. The following (1a) to (1d): (1a) a clock for generating time information in accordance with a user's unlocking operation time, (1b) a memory for storing a comparison table of time and digital code, (1c) a code generator for generating a digital code corresponding to the generated time information by referring to a comparison table stored in a memory; and (1d) a transmitter for transmitting the time information and the digital code to the lock side. (2a) Receiver for receiving time information and digital code from key side, (2b) Memory storing comparison table of time and digital code, (2c) Memory An operation that refers to the stored time / digital code comparison table and determines whether the combination of the time information and digital code received from the key side exists in the comparison table. Stage, and (2d) digital locking device and a lock having a controller for controlling the motor for driving the locking and unlocking operation. 9. The key has a key-side memory rewriting means for rewriting a comparison table between a time stored in a memory and a digital code. 9. A lock-side memory rewriting means for rewriting a comparison table, wherein the key-side and lock-side rewriting means are provided with respective communication means, and the key-side and lock-side memories can be simultaneously rewritten by communication. Digital locking device as described. (1a) a key in which digital code information is encoded in a key form; (2a) to (2c): (2a) code reading means for recognizing the key form and reading a digital code; (2) a memory storing a digital code, and (2c) a digital code read from a key form.
A lock having arithmetic means for comparing codes stored in a memory. 11. The locking device according to claim 5, wherein the digital locking device according to claim 8 or 9 is used as the electric lock. 12. The locking device according to claim 2, wherein the digital locking device according to claim 10 is used as the electric lock.