JPS622099B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention locks or unlocks a locked object by inputting a memorized code consisting of a multi-digit number or symbol from the outside. The present invention relates to an electronic locking device, and particularly to an electronic locking device that can quickly and accurately unlock the lock in the event of an abnormal situation such as a failure of the electronic circuit system.

[Prior art]

Most electronic locking devices have a key button operation unit that inputs a recited code from the outside, a memory that stores the entered recited code, and a code processing control that compares the input with the stored code and outputs the calculation result. The lock is equipped with an operating section such as a solenoid or a motor that uses the output to drive and lock/unlock the lock, and the overall operation is controlled by a microcomputer or the like. These devices have been devised in various ways to maintain a high level of confidentiality of the recited code, such as those that allow a specific person to update the recited code at any time, and those that allow the recited code to be updated at a fixed time. There have been proposals to restrict and prevent unauthorized updates by third parties.

Most electronic locking devices devised in this way eliminate the hassle of carrying a key at all times and the worry of theft due to duplicate keys, etc., compared to conventional mechanical locks installed on the doors of houses. Furthermore, they have a higher level of confidentiality than combination locks, and are widely used not only in homes but also in safes, car doors, and travel bags.

[Problem that the invention seeks to solve]

Unlike mechanical locks or combination locks, these conventional electronic locking devices are mainly composed of electronic circuits as mentioned above, so they usually use a built-in DC3V or 6V battery as the power source for the microcomputer. Often, the voltage drops due to battery consumption,
In addition, memory consumption due to failure of electronic circuits made up of many electronic parts, and other functions such as computer failure, as well as consumption of built-in batteries as power sources for electromagnetic solenoids and small motors used as lock operating terminals, etc. Failures in the electrical system, such as failures in the rectifier that converts power to device power and power outages in commercial power, are unavoidable. If such a failure occurs in the power supply or circuit system while the door is locked, the solenoid or motor will not operate with normal key input, resulting in the problem that the door or bag cannot be unlocked.

The present invention solves the drawbacks of the conventional electronic locking device in which the lock cannot be unlocked due to an abnormal situation such as a failure of the electronic circuit or wear and tear of the power supply or drive power system of the solenoid or motor. If the drive power supply for the solenoid and motor is normal when the drive unit is inoperable, the lock can be unlocked easily and quickly by inputting the separately provided unlock code.If the drive power supply mentioned above also fails, The purpose is to provide a device that can be unlocked with a similar key input operation using an easily available external power source, and that has been designed to maintain airtightness in multiple ways during the unlocking operation in the above abnormal situation, so that it can be used with peace of mind. It is.

[Means for solving problems]

The electronic locking device according to the present invention has a key button operation section for inputting a recited code from the outside, stores the inputted recited code, and performs a comparison operation between the input code at the time of locking/unlocking and the stored recited code. and a control unit that outputs the calculation results, an electric drive unit operation unit that locks and unlocks the locked object based on the output from this control unit, and a power source for the control unit and a power source for the electric drive unit. In the electronic locking device, in the event of a failure in the circuit or power supply system of the control unit, the power source for the electric drive body or a separately installed external power source is switched to a key input signal source for unlocking in the event of an abnormality. a switching means, an abnormality unlocking determination means for storing a recitation code for unlocking in an abnormality, and comparing and determining the stored recitation code and an input code for unlocking in an abnormality;
The above-mentioned problem is solved by providing a supply means for supplying the power source for the electric drive body or an external power source to the electric drive body based on the determination output from the abnormal unlock determination means.

[Effect]

In the event of a failure in the control unit's circuit or power supply system, the switching means can be used to switch the power source for the electric drive body or a separately installed external power source to the key input signal source, and by inputting the recited code for unlocking in the event of an abnormality. The abnormality unlocking determination means compares it with a pre-stored recitation code, and if it is determined that they match, the power source for the electric driving body or the external power source is supplied to the electric driving body based on the determination output, and the electric driving body becomes unlocked.

〔Example〕

FIG. 1 shows a large bag (trunk), for example, for traveling abroad, equipped with an electronic locking device according to an embodiment of the present invention. Case 1 is made of, for example, duralumin, and the electronic locking device is installed near the handle. A board 2 is attached. Reference numeral 3 designates a key button operation panel which is a recessed portion sunk several mm below the panel surface of the board 2, and is provided with 10 number keys 0 to 9 and 5 function keys. 4 is a cover for the key button operation panel 3, which is closed except when opening and closing the bag.

The base/external connection terminals 5A and 5B of the case 1 have the function of locking and unlocking by the operation of the solenoids 6A and 6B indicated by dotted lines at the bottom. It is configured to function as an external power supply connection terminal for unlocking in the event of an abnormality. As an external power source, for example, DC 12V is drawn out from a car battery using a lead wire, and the tip thereof is inserted into the small hole 7 of the base/external connection terminal 5A on the (+) side and into the small hole 8 of 5B on the (-) side. The lead wire may be connected to the metal part of the cap using an alligator clip, for example, without providing a small hole. Although not shown, a control unit 13 consisting of a microcomputer that processes key inputs (described later) is provided on the back side of the board 2, and a control unit power source 11 (described later), such as a DC3V mercury battery, is also replaced in a position close to it. It is installed smoothly.

The dotted line at the bottom left of Case 1 shows that when the computer control unit fails (including a failure of its dedicated power supply), a normal solenoid drive power source, such as a DC6V mercury battery (installed at the base 2) This is a changeover switch 9 for converting the back side or the vicinity of the solenoids 6A and 6B to a key button circuit. The changeover switch 9 is configured as a single-pole double-throw reed switch or a proximity switch with a built-in magnet that is activated by applying a magnetic field change from outside the case 1 of the bag. Contact 9C-9NC is 9C
-9NO is switched, and the power supply connected to 9C is switched to the common of the key button circuit.

FIG. 2 is a block diagram showing the circuit configuration of this electronic locking device. Fifteen key buttons are arranged on the key button operation panel 3, and the key S is a power switch, which locks or locks when both the built-in operating end drive power source 10 and the control unit power source 11 are normal and there is no failure in the electronic circuit. Operate when unlocking. Key C is a clear key, which is operated to erase from the memory of the control unit 13 when a recited numerical value has been set by mistake using the numerical keys 12. Key L is a lock key, and after setting the memorized numerical value
Operate to activate and lock A and 6B.
After the lock is activated by the solenoid, operate the key S to turn on the operating end drive power source 10 and the control unit power source 11.
Locking is completed by turning it off. Key U is an unlock key, and when opening the bag, turn on the operating end drive power source 10 and the control unit power source 11 with the key S, set the recited value with the numeric key 12, and activate the solenoids 6A and 6B to unlock. Operate when locking.

The basic configuration is to store the recited numerical value set using the numerical keys 12 in the memory of the control unit 13, and check whether the numerical value Xn input using the numerical keys 12 and the recited numerical value match when locking or unlocking. A comparison calculation circuit of the control unit 13 performs a comparison calculation, and only when they match, a locking command signal Sl or an unlocking command signal is issued.
Su is output to the operating end drive control circuit 14. The solenoid 6 is connected to the operating end drive power source 10 by the operation of the operating end drive control circuit 14 in response to these command signals.
Power supply to A and 6B is controlled. When installing the locking device in a safe, etc., press the number key 12.
The set numerical value from
5 so that the setting operation can be confirmed. Also, when used for a door of a house, power is supplied from the commercial power supply 16 to the control unit power supply 11 and the operating end drive power supply 10. You may also do so.

In addition to the above-mentioned configuration, the electronic locking device according to the present invention has the control unit 13 that prevents accidents caused by electronic parts and control unit power supply 1.
The structure is designed to prepare for an abnormal situation in which the device becomes inoperable due to wear and tear on the device. That is, the second
These are each block surrounded by a dashed-dotted line frame 21 in the figure and its signal system. Inputs from the key button operation panel 3 and the control unit 13 are input to the control unit 13 via the abnormality unlocking determination circuit 22. This determination circuit 22 is pre-stored with a three-digit numerical value, for example (248), for example, a code to be recited for unlocking in the above-mentioned abnormal situation (designated as Xa to distinguish it from a normal locking/unlocking code). After a signal voltage source, which will be described later, is applied to the key button operation panel 3, it is determined whether the numerical value entered from the numeric keys 12 matches the above (248), and only if it matches, the value is Input terminal 2
A gate circuit 23 is connected to output the input to the output terminal 25 from the input terminal 4 to the output terminal 25. The control section 13 mentioned above
If the failure occurs while the bag is locked, the changeover switch 9 as a proximity switch explained in FIG.
When the magnet 26 or iron piece approaches the movable contact 9C switches to 9NO, the operating end drive power source 1
A positive voltage +V10 of 0 is applied to the key button operation panel 3 and the gate circuit 23. If this +V10 is a specified value, for example, DC5 to 6V, the abnormality unlocking determination circuit 22 and the gate circuit 23 will operate normally, and as described above, the unlocking code Xa (248) will be input to the numeric key 12. If you select one of them and press them at the same time, the abnormality unlocking determination circuit 22 determines a match, turns on the gate circuit 23, and applies +V10 to the solenoids 6A and 6B to drive them to unlock.

However, if the voltage of the operating end drive power source 10 were to drop below the specified value, the lock would not be unlocked. In this way, in preparation for double accidents, the external power supply circuit uses the small holes 7 and 8 of the base/connection terminals 5A and 5B as connection ports explained in Fig. 1. A diode 27 and a resistor 28 are directly provided as a connection port for this. If a car battery is used as the external power source 29 for these diode 27 and resistor 28, the voltage will be
12V, which is the 5 to 6V of the operating end drive power supply 10.
It is to be adjusted to. The dotted line key B on the key button operation panel 3 is a circuit switching key in place of the changeover switch 9. When using this key, press this key B at the same time as the number key 12 to select the 3-digit recitation code Xa. Bye.

Next, with reference to FIG. 3, the structure and operation of a concrete example circuit of the abnormality unlocking determination circuit 22 and gate circuit 23 shown in FIG. 2 will be explained. 13S, which is input to the right of the common line 3L for 0 to 9 of the numeric keys 12 on the key button operation panel 3, is the locking/unlocking recitation code Xn during normal operation, as shown in Figure 2. This is the signal source for key input, but turns off in case of abnormality.
are doing. A portion surrounded by a dotted line 31 between the ten numeric keys 12 and the control section 13 has the functions of both the abnormality unlocking determination circuit 22 and the gate circuit 23 shown in FIG. Inverters I ₀ to I ₉ are connected to the output side of each key 0 to 9 of the numeric keypad 12.
is connected. And these inverters I ₀
Each output side of ~I ₉ is input to the AND circuit 32 through the pin hole of the short pin 33, and the output side of each key 0 to 9 is also input to the AND circuit 32 through the pin hole. There is. Further, the pin holes of each inverter _I0 to _I9 are connected to the pin holes of the corresponding keys 0 to 9, respectively. Using this inverter group I ₀ to I ₉ , the abnormal unlock code Xa
Describe the procedure for programming the memory of. For example, if the recitation code is the 3-digit number (248) mentioned above, then 3
Insert the book's short pin 33 into the pin holes of keys 2, 4, and 8 of the numeric keys 12 as indicated by the ● marks in the figure, and connect it to the AND circuit 32.
For the remaining keys 0, 1, 3, 5, 6, 7, 9, the corresponding inverters I ₀ , I ₁ , I ₃ , I ₅ , I ₆ ,
Insert the short pin 33 into the pin holes of I ₇ and I ₉ .
Connect to AND circuit 32. With the above operations (248)
The recited code is programmed. When keys 2, 4, and 8 are pressed simultaneously, a +10V (H) signal is input to the AND circuit 32 via the short pin 33, and the other seven keys are not pressed, so each input (L) The signal is inverted by inverters I ₀ , I ₁ , I ₃ , I ₅ , I ₆ , I ₇ , I ₉ and (H) the signal is ANDed via the short pin 33.
It is input to the circuit 32. In other words, AND circuit 3
2, all of its inputs are (H) signals, so the output is also at (H) level, this signal is input to amplifier OA and current amplified, and solenoid 6A, 6B
It activates. If a third person who does not know the unlock code now presses any one of keys 0 to 9, the output of the inverter of that circuit will be (L), the output of the AND circuit 32 will be (L), and the solenoid 6A and 6B do not operate and do not unlock. In this way, the emergency unlock code Xa is memorized by the program for setting the shot pin 33, and the gate remains OFF except when the number keys of the circuit marked with ● in Fig. 3 are simultaneously pressed. When the numeric keys are pressed at the same time, the signal SH, which is determined to be a match by the abnormality unlocking determination circuit 22 in FIG. 2, is sent to the gate circuit 2.
3 is output. The pyrogram of this shoot pin can be changed at any time, which is why it maintains a high degree of secrecy. The number of digits of the recitation code Xa is not limited to the three digits mentioned above,
Usually 2 to 5 digits are used. A single digit is fine, but since the lock can be unlocked by pressing 10 keys in sequence, it is less secure and should not be used. In order to further improve the security, a plurality of recitation code connecting lines for randomly setting the short pins 33 may be provided, and a NAND circuit may be configured with, for example, a 3-input AND circuit and an inverter, and a coincidence signal may be set at the output of the NAND circuit.

The above is an explanation of the large travel bag which is an embodiment of the present invention.As mentioned above, when used for the door of a house or a safe, for example, a lamp or a buzzer may be installed near the key button operation panel 3. It can also be used to indicate normal locking or to warn of illegal intruders.

〔effect〕

Since this invention is configured as described above,
Since conventional electronic locking devices are composed of a combination of many electronic components, failure of this electronic circuit, especially the control section of the microcomputer, will stop its normal function, for example, the memory storage will be reduced or
Or, it solves the problem of forgetting the unlock code, or becoming unable to unlock the lock due to wear and tear on the power supply system, which requires the help of experts.
Set a recited code for unlocking in abnormal situations such as the above, memorize it, compare the set code,
With a device configuration that emits a coincidence signal, we have created a highly reliable device that can quickly unlock the door in the event of any failure in the electrical or electronic system, and can maintain a high level of confidentiality during unlocking operations in abnormal situations. This is what we could have provided.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a large travel bag equipped with an electronic locking device of the present invention, Fig. 2 is a block diagram showing the configuration of the electronic locking device of the present invention, and Fig. 3 is an abnormality unlocking code. FIG. 3 is a circuit diagram showing an embodiment of an abnormality unlocking determination circuit that stores and compares and outputs a coincidence signal, and a control circuit that drives an unlocking operation end using this output. 3...Key button operation panel, 5A, 5B...Base/external power supply connection terminal, 6A, 6B...Solenoid, 9...Selector switch, 10...Operation end drive power supply, 11...Control unit power supply, 13S... ...Key input signal source during normal operation, Xn...Lock/unlock cipher code during normal operation, Xa...Unlock cipher code during abnormality, Sl...Lock command signal, Su...Unlock command signal, SH... ...Concordance signal, +V10...Signal and drive voltage for unlocking in an abnormal situation, 22...Unlocking determination circuit in an abnormal situation.

Claims (1)

[Scope of Claims] 1. A key button operation section for inputting a recitation code from the outside, and a key button operation section for storing the input recitation code,
A control unit that compares and calculates the input code for locking/unlocking with a stored recited code and outputs the result of the calculation, and the output from this control unit drives and operates the locking/unlocking of the locked object. In an electronic locking device comprising an electric driving body operating section, a power source for the control section, and a power source for the electric driving body, in the event of a failure in the circuit or power supply system of the control section, the power source for the electric driving body or separately installed switching means for switching the external power supply to a key input signal source for unlocking in the event of an abnormality, and storing a recited code for unlocking in the event of an abnormality, and a switching means for switching the external power supply of the and a supply means for supplying the power source for the electric drive body or an external power source to the electric drive body based on the determination output from the abnormality unlock determination means. An electronic locking device characterized by: 2. The electronic locking device according to claim 1, wherein the switching means is a proximity switch operated by an external magnetic field. 3. The abnormality unlocking determination means includes the same number of inverters as the number keys of the key button operation section, the same number of short pins as the number keys for selectively selecting either the number keys or the inverters, and an AND circuit. An electronic locking device according to claim 1, comprising: