JP2005133327A - Security system for door device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly-practical security system for a door, which stabilizes a security function by inhibiting the occurrence of a mutual malfunction between a door side and a security-device side. <P>SOLUTION: A door device 10 for locking/unlocking the door with a keyless entry system is connected with the security device 50 having the security function for prevention of fraudulent unlocking and the like by a signal transmission means 40 for transmitting a unidirectional optical signal of the security device 50 from the door device 10; and either of a pair of light-receptive elements of the means 40 is activated upon receiving light in either of the normal and reverse directions of an electric current which flows into an actuator 3 of the door device 10 so as to control the operation of the security device 50. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a door system security system in which a door of a vehicle or the like is locked and unlocked by a lock mechanism and an actuator thereof.

In recent years, illegal intrusions to homes, theft of cars, and on-vehicle aiming can be achieved by inserting a tool into the key cylinder of a house or car door and forcibly rotating it to destroy the key cylinder and activate the lock mechanism. There are many techniques for unlocking. As a deterring means against this kind of action, a number of door-opening / closing visualizing means (for example, see Patent Document 1) for visually confirming the opening and closing of the door and a number of electronic security devices using various detection sensors and control circuits have been proposed. (For example, refer to Patent Document 2).
Japanese Patent Laid-Open No. 9-021258 (stage 0017, FIG. 3) JP-A-8-108826 (summary)

  The vehicle door opening / closing visualizing means of Patent Document 1 includes a red confirmation lamp and a blue confirmation lamp connected in parallel to a power wire of an electric motor that unlocks and locks the door, and turns on the blue confirmation lamp when the door is unlocked. This system lights the red confirmation lamp when the door is locked, so that the passenger can see the door unlocking / locking, which helps prevent theft caused by forgetting to lock the door. However, the electric motor is operated by energizing for a few seconds for a short time to unlock and lock, and since the confirmation lamp lights only for this short time, it can be visually confirmed whether the door is unlocked or locked in a short time. Need attention. Although it is easy to extend the lighting time of such a confirmation lamp in terms of an electric circuit, the configuration becomes complicated by requiring a new power source for extending the lighting time.

  Further, the alarm device such as the security device of Patent Document 2 has to be complicated in the entire system. In other words, this type of security device can be broadly divided into an actuator side that generates an alarm and an IC circuit side that controls the actuator, but mutual error transmission of signals due to induced currents between the actuator side and the IC circuit side. May cause malfunction, and there is a problem that the entire system becomes complicated and expensive because it is necessary to supplement the circuit for preventing the malfunction. In addition, it is difficult for an amateur to retrofit such a security device to an existing car without security equipment.

  An object of the present invention is to provide a highly practical door device security system that suppresses the occurrence of malfunction between the door side and the security device side and stabilizes the security function.

  In order to achieve the above object, the present invention includes a lock mechanism that locks and unlocks a door, and an actuator that performs a locking operation and an unlocking operation of the locking mechanism by direct current energization and reverse direction energization. A door device security system, wherein a first light emitting element that emits light when energized in a forward direction of an actuator, a first light receiving element that receives light emitted from the first light emitting element, and a second light emitting element that emits light when energized in a reverse direction are received. A unidirectional signal transmission means having a second light receiving element; and a security device that performs a predetermined security operation based on an output signal at the time of light reception of the first light receiving element and the second light receiving element of the signal transmitting means. Features.

  Here, the door is a door that is desirably provided with a security function such as an automobile door or a warehouse door, and a door device is constructed by installing a mechanical or electromagnetic lock mechanism and an actuator for driving the lock mechanism. An existing door device can be applied, and a DC power source, for example, an electric motor driven by a battery, an electromagnetic solenoid, or a cylinder can be used as the actuator. The actuator is driven by energization in both forward and reverse directions to move the lock mechanism and select and perform each operation of locking and unlocking. The forward / reverse two directions of energization to the actuator and the two actions of locking / unlocking by the lock mechanism uniquely correspond. It is practically advantageous to apply a commercially available photocoupler to each of the pair of the first light emitting element and the first light receiving element and the pair of the second light emitting element and the second light receiving element of the unidirectional signal transmission means. The light emitting diode and the light receiving diode may be optically coupled with an optical fiber. This signal transmission means transmits a signal by light from the light projecting element to the light receiving element, but does not transmit a signal in the reverse direction, avoiding unnecessary erroneous signal transmission from the security device side to the door device side, for example, A malfunction of the lock mechanism due to a noise signal transmitted from the security device can be prevented. Further, even if an unnecessary electric signal is generated on the door device side, this electric error signal is not transmitted to the security device side by the signal transmission means, and the security operation is stably performed.

  In the present invention, the door device can be a system that locks and unlocks the door by a keyless entry system. As the door of the door device, a door that opens and closes manually or a door that automatically opens and closes can be applied. It is desirable to increase the security effectiveness by adopting a keyless entry system for the door.

  Further, it is desirable that the security device performs silent security operation and silent guard only for silent alarm. The silent security operation here is a threatening display by lighting or flashing the lamp, and it is a silent light display operation that does not generate a sound like an alarm sound, and has a threatening effect to prevent unauthorized unlocking of the door. There is no inconvenience caused by an unexpected alarm sound.

  In the present invention, when the door is an automobile door, the security device and the signal line of the ignition switch of the automobile can be wired, and the security operation of the security device can be controlled by the ON operation of the ignition switch. In other words, in the case of an automobile door, when the engine starts and can run, depending on the security device, it may be desirable to stop the operation when the engine is started, and this engine stop is started by an ignition switch. If done sometimes, it can be done reliably with a simple circuit configuration.

  According to the present invention, the security device includes a security light source element in which a light emitting surface is fixed to an outer side of the door in a key cylinder mounting key cylinder hole formed in the automobile door, and the light source element is attached to the automobile door. It is possible to include an unauthorized unlocking prevention device that selectively emits light at the time of locking and unlocking.

  The light source element here can be a light-emitting diode that emits light when energized, or a small component of a high-intensity lamp. By emitting light, it acts on the vision of an unauthorized person attempting to unlock the dishonesty, and makes the unauthorized unlocking work tricky. Demonstrate the threat. This light source element is fixed to the existing key cylinder hole of the automobile door instead of the key cylinder. That is, a key cylinder hole for attaching a key cylinder is formed in a door having a lock mechanism and a key cylinder of an ordinary automobile. In the practice of the present invention, the key cylinder in the key cylinder hole of the door is removed. Instead, install a light source element.

  In the present invention, the light source elements attached to the key cylinder hole of the automobile door are configured as a pair having different emission colors, and only one of the pair of light source elements is operated to flash or emit light when the automobile door is locked. When the unlocking operation is performed, it is desirable that only the other is caused to perform flashing light emission or continuous light emission operation. For example, a pair of light source elements is composed of a red light emitting diode and a green light emitting diode, the red light emitting diode is turned on (flashing light emission or continuous light emission) when locked, and the green light emitting diode is turned on (flashing light emission or continuous light emission) when unlocked. . If the red light emitting diode is turned on during locking, unauthorized unlocking is suppressed by the powerful threatening effect of red light emission, and the locking can always be clearly recognized.

  Further, in the present invention, when locking the automobile door, only one of the pair of light source elements is caused to emit light with the power of the on-vehicle battery, and the dedicated charging circuit is charged with the battery power and unlocked. Only the other light source element can be operated to emit light with the discharge charge of the charging circuit. In this case, if the light source element at the time of locking is a red light emitting diode, and this is emitted by an in-vehicle battery, the light emission time can be arbitrarily set and the threat of red light emission can be expected. In addition, when the light source element at the time of unlocking is a green light emitting diode and is turned on by discharging the charge previously charged in the charging circuit, the burden on the in-vehicle battery is reduced and power saving can be achieved. The green light-emitting diode is turned on by this discharge only for a short time determined by the time constant of the discharge circuit, but the green light emission is not a problem because it only recognizes the unlocking of the door performed by the passenger.

  Moreover, in this invention, a light source element can be installed in the some door of a motor vehicle, and the light source element of a some door can be lighted by time division.

  For example, in a car model in which a key cylinder is attached to a total of four doors, two doors for the driver's seat and front passenger seat and two doors for the rear seat, a light source element is attached to the four doors, and the two doors for the front seat and the back door In a five-door model in which a key cylinder is attached to a total of three doors, a light source element can be attached to the three doors. When the light source elements are attached to such a plurality of doors, one or more of the light source elements of the doors other than the door of the driver's seat can be dummy parts that do not perform the light emission operation. And if it is made to light in order for a short time one by one, ie, time-division lighting, without lighting the light source element of several doors simultaneously, power consumption can be reduced and the burden of a vehicle-mounted battery can be reduced. it can.

  The security device has a function of selectively causing a light source element other than the light source element to emit light according to locking / unlocking of an automobile door by a keyless entry system, and turning off the light source element by turning on an ignition switch. Can be given. The “light source element other than the light source element” is a light source element other than a light source element in which a light emitting surface is fixed to a key cylinder hole formed in an automobile door so that the light emitting surface faces the outer side of the door. The attachment position and attachment method of the device are not particularly limited. As this type of display security device, a scanner device that sequentially blinks a plurality of lamps, a laser pointer that displays characters with a laser, an EL panel, and the like can be used. These display security devices can be newly designed as dedicated products, or commercially available products can be used. By turning off the light source element of the display security device by turning on the ignition switch, it is possible to prevent the light source element from being turned on while the vehicle is running.

  The security device can have a function of controlling a vehicle travel regulation device that regulates the travel of the vehicle in accordance with locking / unlocking of the vehicle door by the keyless entry system. The automobile travel regulation device is a device for regulating the travel of the automobile. For example, in addition to a device that regulates the start of the engine, a device that locks the travel system or the steering system can be considered. By linking this type of vehicle travel restriction device on / off with the locking / unlocking of the vehicle door, even if the ignition switch is on, the vehicle travel restriction device is turned on unless it is properly unlocked by the keyless entry system. The driving of the car can be regulated. Therefore, even if the ignition switch can be turned on by an unauthorized operation, the driving of the automobile can be restricted and the security effect is enhanced.

  Furthermore, in this invention, the external terminal connected with the vehicle-mounted battery can be provided outside the vehicle. In this way, even when the power of the in-vehicle battery is completely consumed, it becomes possible to connect the in-vehicle battery of another vehicle to the in-vehicle battery via the external terminal and to supply power. Can be locked and unlocked. Such a system is particularly effective in a keyless entry system.

  According to the system of the present invention, the security device operates to prevent unauthorized unlocking of a person who attempts to unlock the door illegally, and unnecessary security between the security device and the door device is prevented during the security operation. Inappropriate transmission of an erroneous signal is prevented by the unidirectional signal transmission means, so that the operations of both the security device and the door device are stabilized, and the reliability of the door security system is increased. Further, since the security device and the door device are connected by a unidirectional signal transmission means such as a photocoupler, there is a practical effect that the security device can be retrofitted to the existing door device with a simple operation.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  FIG. 1 shows a door device 10 that unlocks and locks a door 1 in a keyless entry system, a security device 50 that performs a specific security operation corresponding to the locking operation and unlocking operation of the door 1, and a door device. 1 is a block diagram of an entire security system including unidirectional signal transmission means 40 that connects signal lines of the security device 50 to the security device 50. The door 1 is an automobile door, and a locking operation and an unlocking operation are alternately performed by a lock mechanism 2 and an actuator 3 installed on the vehicle body side. The actuator 3 is, for example, an electric motor. Hereinafter, the actuator 3 is referred to as a motor 3. The motor 3 is wired to the door control device 6 by two power wires 12a and 12b, and the motor 3 rotates forward and backward in the forward / reverse direction of the direct current of the in-vehicle battery 8 flowing through the wire to lock / open the lock mechanism 2. Make the lock move.

  The security device 50 can be retrofitted to the automobile door 1, and has a function of suppressing unauthorized unlocking by an unauthorized person by a threatening effect such as light emission, and a device having various security functions known for other commercially available products. The basic structure of these various security devices is the same as that of commercially available products. The security device 50 operates based on a signal transmitted one-way from the door device 10 through the one-way signal transmission means 40. FIG. 3 is a system circuit diagram in which three types of security devices are provided. One security device is an unauthorized unlocking prevention device 50A, and the other two security devices are, for example, a display security device 50B and an automobile travel regulation device 50C. There will be described later in detail.

  The unidirectional signal transmission means 40 includes a first light emitting element 41a and a second light emitting element 41b connected in parallel to the motor 3, a first light receiving element 42a optically coupled to the first light emitting element 41a, and a second light emitting element. The second light receiving element 42b is optically coupled to 41b. A specific example of the signal transmission means 40 is shown in FIG. 2 and is composed of two photocouplers 40a and 40b. The first light emitting element 41a of one photocoupler 40a is a light emitting diode, the first light receiving element 42a is a light receiving diode, and these are optically coupled in a state where they are housed in one small case. The second light-emitting element 41b of the other photocoupler 40b is a light-emitting diode and the second light-receiving element 42b is a light-receiving diode, which are optically coupled in a state where they are housed in one small case. The first light-emitting element 41a and the second light-emitting element 41b are connected in parallel to the motor 3 in opposite directions, and are either one of the light-emitting elements 41a or 41b determined by the direction of the diversion of the direct current that is supplied to the motor 3. Emits light, the corresponding light receiving element 42a or 42b receives the light, and a security operation corresponding to this light reception is performed. In the case of the unidirectional signal transmission means 40 using a pair of photocouplers 40a and 40b, not only light transmission from the security device 50 side to the door device 10 side, but also transmission of electrical signals other than light is blocked. The type and number of security devices 50 can be selected in a wide range, and malfunctions due to erroneous signal transmission are eliminated, and countermeasures are not required.

  The motor 3 shown in FIG. 1 rotates in the forward and reverse directions when the direct current of the in-vehicle battery 8 is energized in the forward or reverse direction from the door control device 6 to operate the lock mechanism 2. For example, when a lock signal is input from the receiver 7 of the keyless entry system to the door control device 6, the motor 3 rotates in the forward direction for a predetermined short time by energizing in the forward direction to cause the lock mechanism 2 to perform a locking operation. When an unlock signal is input from the receiver 7 to the door control device 6, the motor 3 rotates in the reverse direction for a predetermined short period of time by reverse energization to cause the lock mechanism 2 to unlock. The receiver 7 alternately outputs a lock signal and an unlock signal to the door control device 6 every time a pulse signal is received from a transmitter (not shown) outside the vehicle.

  A side view of the door 1 of FIG. 1 viewed from the outside is shown in FIG. 4, a partially enlarged view thereof is shown in FIG. 5, and a perspective view of the door 1 viewed from the inside is shown in FIG. The lock mechanism 2 shown in the figure locks and unlocks the door 1 by engaging and disengaging the striker on the vehicle body side and the latch on the door side. FIG. 6 is a door layout diagram in a four-door vehicle, showing only one door, and the remaining three doors showing only the motor 3 as a door locking / unlocking actuator.

  The lock mechanism 2 can be locked and unlocked by a keyless entry system, which will be described later, or manually by a door lock switch 4 or a door lock knob 5 provided on the inner panel of the door 1 shown in FIG. The door lock switch 4 and the motor 3 are wired to a door control device 6 common to the four doors. The door control device 6 uses the in-vehicle battery 8 as a power source. When a lock signal is input from the receiver 7 of the keyless entry system, the four motors 3 are simultaneously rotated in the normal direction to perform the locking operation, and the unlock signal is input. Then, the four motors 3 are simultaneously reversely rotated to perform the unlocking operation. The door control device 6 is accommodated in a case and installed in a dashboard near the door 1.

  FIG. 5 is a front view of the outside handle 15 of the door 1 as seen from the outer side. A key cylinder hole 14 is formed in the base 13 to which the handle 15 is attached, and a key cylinder (not shown) is formed in the key cylinder hole 14. Instead, the light source element 20 is mounted. The light source element 20 is a component having an external size similar to an existing key cylinder, and its specific structure is shown in FIG.

  As shown in FIG. 7, the light source element 20 includes a cylindrical housing portion 31 that houses a pair of light emitting diodes 21 and 22 having different emission colors. A lens 32 is housed in the front end portion of the housing portion 31, and a pair of light emitter odes 21 and 22 are disposed behind the lens 32. A cylindrical screw portion 33 is integrally formed at the rear end of the housing portion 31. The housing portion 31 is attached to the key cylinder hole 14 via a lock nut 35 and two spacers 36 and 37.

  Before the light source element 20 is attached to the key cylinder hole 14, a key cylinder (not shown) is attached to the key cylinder hole 14. The key cylinder is removed from the inner side of the door 1, and instead, the housing portion 31 of the light source element 20 is inserted from the outer side, and the spacers 36 and 37 and the lock nut 35 are inserted from the inner side. A flange portion 31 ′ protruding from the outer periphery of the front end of the housing portion 31 is locked to the opening end portion of the key cylinder hole 14, a spacer 37 is applied to the rear end of the key cylinder hole 14, and another spacer 36 is attached to the spacer 37. The lock nut 35 is tightened so as to be pressed, and the light source element 20 is fixed to the key cylinder hole 14. The surface of the base 13 where the key cylinder hole 14 is located and the front surface (light emitting surface) where the lens 32 of the light source element 20 is located are substantially flush with each other so that the appearance of the base 13 is improved. Such attachment work can be performed, for example, by peeling the inner lining of the door 1 and putting the hand in one of the holes provided in the inner panel. This operation can be easily performed even by an unskilled amateur by referring to the installation manual. In addition, the attachment structure and attachment procedure of the key cylinder hole 14 and the light source element 20 are not limited to the above.

  Two-wire input / output power wires 12a and 12b are led out from the motor 3 of the door 1, and the input / output power wires 12a and 12b are wired to a common door control device 6. When one power cable 12a is set to the positive electrode and the other power cable 12b is switched to the ground electrode, the motor 3 is rotated forward and locked, and when the opposite electrode is switched, the motor 3 is rotated backward and opened. The lock is done. The light source elements 20,... Of the security device 50 are wired to the power wires 12a, 12b of the motor 3 via the signal transmission means 40 as shown in the circuit diagram of FIG.

  One of the security devices 50 in FIG. 3 is an unauthorized unlocking prevention device 50A in which the light source element 20 is provided in each of the doors 1 in FIG. 6, and another security device is provided to the control unit 51 of the unauthorized unlocking prevention device 50A. The display security device 50B and the automobile travel regulation device 50c are connected. The control unit 51 is a central processing circuit incorporating an IC circuit element such as a flip-flop. The operation state of locking / unlocking of the door device 10, the unauthorized unlocking prevention device 50A, the display security device 50B, and the automobile travel regulation device 50C. The operation status is read and stored, and the overall control of the entire system is performed. Further, the unauthorized unlocking prevention device 50A shown in FIG. 3 includes a charging circuit 52 that is charged by the in-vehicle battery 8, a lighting control circuit 53 that blinks the plurality of light source elements 20 in a time-sharing manner, and a light source element at the time of locking. It has a timer circuit 54 that determines 20 lighting times.

  The pair of light emitting diodes 21 and 22 of the light source element 20 attached to each door 1 is of two types having different emission colors. For example, one is a red light emitting diode 21 such as a GaAlAs-based LED having an excellent threatening effect, and the other is a human. This is a green (yellow-green) light emitting diode 22 such as a GaP-based LED that gives a sense of security to the user. Each of the light emitting diodes 21 and 22 has a blinking function in order to enhance the visibility as well as the threatening effect. The description of the connection form between these light source elements 20 and other circuits is substituted by the description of the operation for preventing unauthorized unlocking described later.

  Further, as shown in FIG. 3, an external terminal 55 is wired to the in-vehicle battery 8. The external terminal 55 is attached to an inconspicuous location outside the vehicle, for example, near the tire house, and is connected to the in-vehicle battery 8 via a fuse. When the in-vehicle battery 8 consumes power and the keyless entry system does not operate, the keyless entry system can be operated by connecting the battery 56 of another vehicle via the external terminal 55 and supplying power.

  Next, the operation of the unauthorized unlocking prevention device 50A shown in FIG. 3 will be described.

  When a lock signal for locking the door is transmitted from the transmitter outside the vehicle to the receiver 7 inside the vehicle, the door 3 is energized for a certain time from the door control device 6 to the power wires 12a and 12b of the motor 3, and the motor 3 is rotated forward. The lock mechanism 2 performs a locking operation. At this time, one of the power wires 12a becomes a positive pole, and the other power wire 12b is energized. With this energization, the first light emitting element 41a emits light, and the first light receiving element 42a receives the emitted light. Output to the control unit 51. The control unit 51 reads the output from the first light receiving element 42a, causes the red light emitting diode 21 to emit light by energization from the in-vehicle battery 8, and at the same time turns on the switch element S of the charging circuit 52 to perform electrolysis via the resistor R. Capacitor C is charged. Each of the four-door red light emitting diodes 21 is controlled by the lighting control circuit 53 to emit flashing light and repeat the time-division lighting in order. The lighting time of the red light emitting diode 21 is appropriately set by the timer circuit 54, and power saving of the in-vehicle battery 8 is achieved by setting the lighting time.

  The burden on the in-vehicle battery 8 is reduced by lighting the red light emitting diodes 21 of the four doors in order in a time-sharing manner, and the locking of the door 1 can be easily seen from outside the vehicle by blinking lighting. Intimidation is increased against the intended fraud and deters unauthorized fraud. Even if an unauthorized person tries to unlock the card without being fooled by this threat, the key cylinder itself has been removed, and there is no part of the vehicle that can be used for unlocking. . Even if an unauthorized person applies an external force to the light source element 20 and tries to remove it by force, the light source element 20 is fixed on the inner side of the outer panel of the door 1 and cannot be removed from the outside of the vehicle. Even if the light source element 20 is successfully removed, the small key cylinder hole 14 is present after the removal, and it is difficult to operate the lock mechanism 2 and the unlocking cannot be performed. In order to prevent such forcible removal of the light source element 20, the flange portion 31 'of the light source element 20 exposed to the outside of the vehicle is formed in close contact with the base 13 as much as possible and formed in a smooth shape with few irregularities.

  When an unlock signal for unlocking the door is transmitted from the transmitter outside the vehicle to the receiver 7 inside the vehicle, the energization path from the door control device 6 to the motor 3 is switched in the reverse direction, and the motor 3 rotates in the reverse direction. 2 performs the unlocking operation. At this time, the polarities of the power wires 12a and 12b of the motor 3 are reversed, the second light emitting element 41b emits light, the second light receiving element 42b receives light and outputs it to the control unit 51. The control unit 51 reads the output from the second light receiving element 42b and switches the switch element S to OFF. Then, the electric charge charged in the electrolytic capacitor C of the charging circuit 52 flows to the green light emitting diode 22, and the green light emitting diode 22 emits light. The green light emission is performed for a short time, for example, about 5 seconds determined by the self-constant of the electrolytic capacitor C3 and the resistance R, and is turned off. Since this green lighting is also performed at the conspicuous key cylinder hole position of the automobile door 1, the unlocking can be easily visually recognized from the outside of the vehicle. Further, when the green light emitting diode 22 is turned on for unlocking only for a predetermined short time using the charging circuit 51, power can be saved, and the power consumption of the in-vehicle battery 8 can be suppressed.

  When the driver unlocks from the outside of the vehicle and enters the vehicle, closes the door and locks with the motor 3, the red light emitting diode 21 is lit in the manner described above. When the driver inserts a key into the ignition switch and turns on the ignition switch 57 to start the engine, the ignition signal line 58 is grounded in a short time after the ignition switch is turned on. The light emitting diode 21 is turned off. In this way, red light emission is prevented from accidentally occurring while the vehicle is traveling.

  Further, when the power of the in-vehicle battery 8 is consumed to such an extent that the lock mechanism 2 of the door 1 cannot be operated, the motor 3 is operated by the battery 56 of the other vehicle using the external terminal 55 installed in an inconspicuous place outside the vehicle. Can be unlocked, and the engine can be started to charge the in-vehicle battery 8.

  The unauthorized unlocking prevention device 50A can be applied to the automobile door 1 before adopting the keyless entry system shown in FIG. For example, FIG. 8 is a wiring diagram of a system in which a motor 3 is retrofitted into a door 1 of a car that is locked and unlocked by key operation of a key cylinder so that it can be locked and unlocked by a keyless entry system. The key cylinder is removed and the light source element 20 is retrofitted instead.

  In addition, when retrofitting the unauthorized unlocking prevention device 50A to the existing door device 10, it is conceivable that the signal transmission means 40 is erroneously connected to the power wires 12a and 12b of the motor 3 in the reverse direction of the normal direction. Even if the reverse connection is made in this way, the green light emitting diode is turned on at the time of locking, and the red light emitting diode is turned on at the time of unlocking, and there is no harmful effect. A connection error to 12b is immediately known and can be easily corrected.

  A display security device 50B shown in FIG. 3 selectively emits a light source element in accordance with unlocking / locking by a keyless entry system. As this display security device 50B, for example, a commercially available scanner device can be used. When the door device 10 is in the locked state, it is turned on and operates intimidating by blinking of the scanner lamp, and the ignition switch 57 is turned on. When it is turned on, it turns off and goes off. By attaching the display security device 50B to the control unit 51, the cover security device 50B can be switched off when the ignition is turned on by using the ignition signal input to the control unit 51 via the ignition signal line 58. It can be carried out. A commercial product of this type of display security device 50B is usually provided with an input line (not shown) for an ignition signal in order to switch to an off state in conjunction with the ignition. Must be connected to the ignition switch, and requires expertise in wiring. On the other hand, in the present invention, since the ignition signal is input to the control unit 51 via the ignition signal line 58, if the output unit is provided in the control unit 51 in advance, the input line is connected to the output unit. Wiring is completed by simply doing so, and anyone can easily attach a commercial product to expand the security function.

  The automobile travel restriction device 50C is an apparatus for restricting the traveling of the automobile when an unauthorized person breaks the door 1 to enter the vehicle and attempts to start the engine illegally. This travel regulation includes, for example, engine start regulation (cutting off power to the cell motor, fuel pump, etc.), travel system lock (holding the shift lever at the parking position, locking the rotation of the tire, etc.), or steering It can be performed by locking the system (for example, locking the handle). A function equivalent to a so-called immobilizer function can be obtained by switching on / off of the vehicle travel regulation device 50c according to the operation state of the security device 50, that is, the unlocked / locked state by the keyless entry system. For example, even if the control unit 51 detects the ignition on signal, the ignition on signal is detected unless the control unit 51 detects the light reception signal from the second light receiving element 42b and recognizes the unlocked state immediately before that. Can be considered to be illegal, hold the on-state of the vehicle travel regulation device 50c, and regulate the travel of the vehicle. In this case, if the ignition ON signal is detected after detecting the light reception signal from the second light receiving element 42b, the control unit 51 determines that the signal is a normal signal, and turns off the vehicle travel regulation device 50c. Switching and canceling automobile driving regulations.

  Further, if another security device, for example, a vibration detection type siren type security device is attached to the control unit 51 and threatened by the siren when an abnormal vibration is detected, the security effect can be further enhanced.

  Each of the various security devices as described above is controlled in operation by a one-way optical signal from the unidirectional signal transmission means 40, similarly to the unauthorized unlocking prevention device 50A. There is no fear that an unnecessary signal is transmitted to the apparatus 10 side to cause a malfunction, and various security operations are executed in a stable state.

  It should be noted that the security system of the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the gist of the present invention.

  Although the automobile door is realistic as a target of unauthorized unlocking, the security system of the present invention is used for doors where unauthorized unlocking is considered problematic and dangerous, such as automatic doors of houses and doors of railway vehicles. It is valid and available.

It is a block diagram which shows the outline | summary of the security system of this invention. It is a circuit diagram which shows embodiment of the one-way signal transmission means in the FIG. 1 system. 1 is a circuit diagram of the entire system. It is a side view from the outside of the door in the system of FIG. FIG. 5 is a partially enlarged view of the door of FIG. 4. It is the wiring diagram seen from the inside of the door of FIG. FIG. 6 is an enlarged cross-sectional view taken along line tt in FIG. 5. It is the other wiring diagram seen from the inner side of the door of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door 2 Lock mechanism 3 Actuator, motor 4 Door lock switch 5 Door lock knob 6 Door control device 7 Receiver 8 Car-mounted battery 10 Door device 12a Power cable 12b Power cable 14 Key cylinder hole 15 Outside handle 20 Light source element 21 Light emitting diode 22 Light-emitting diode 40 Unidirectional signal transmission means 40a Photocoupler 40b Photocoupler 41a First light-emitting element 41b Second light-emitting element 42a First light-receiving element 42b Second light-receiving element 50 Security device 50A Unauthorized unlocking device 50B Display security device 50C Automotive Travel restriction device 51 Control unit 52 Charging circuit 53 Lighting control circuit 54 Timer circuit 55 External terminal 56 Battery 57 Ignition switch

Claims (12)

A door device security system comprising: a lock mechanism for locking and unlocking a door; and an actuator for performing a locking operation and an unlocking operation of the locking mechanism by direct current energization and reverse direction energization,
One direction having a first light emitting element that emits light by energizing in the forward direction of the actuator, a first light receiving element that receives this light emission, a second light emitting element that emits light by energizing in the reverse direction, and a second light receiving element that receives this light emission. Sex signal transmission means;
A security device that performs a predetermined security operation based on output signals at the time of light reception of the first light receiving element and the second light receiving element of the signal transmitting means;
A door device security system comprising:   The door device security system according to claim 1, wherein the door device locks and unlocks the door by a keyless entry system.   The door system security system according to claim 1 or 2, wherein the security device performs a silent security operation with only a silent alarm.   The door system security system according to any one of claims 1 to 3, wherein the door is an automobile door.   The door system security system according to claim 4, wherein a signal line of an ignition switch of an automobile is wired to the security device, and a security operation of the security device is controlled by an ON operation of the ignition switch.   The security device includes a security light source element having a light emitting surface fixed to a key cylinder hole for key cylinder mounting formed on an automobile door so that the light emitting surface faces the outer side of the door, and the light source element is opened when the automobile door is locked. 6. The door device security system according to claim 4, further comprising an unauthorized unlocking prevention device that selectively emits light when locked.   The light source elements are configured as a pair having different emission colors, and only one of the pair of light source elements emits light when the automobile door is locked, and only the other emits light when the unlocking operation is performed. Item 7. The door device security system according to Item 6.   When locking the automobile door, only one of the pair of light source elements is operated to emit light with the power of the in-vehicle battery and the dedicated charging circuit is charged with the same power, and when the unlocking operation is performed, only the other light source element is 8. The door device security system according to claim 7, wherein the light emitting operation is performed by discharging the charging circuit.   The door device security system according to claim 7 or 8, wherein the light source elements are installed in a plurality of doors of an automobile, and the light source elements of the plurality of doors are turned on in a time-sharing manner.   The security device has a function of selectively causing light source elements other than the light source elements to emit light in response to locking / unlocking of an automobile door by a keyless entry system, and turning off the light source elements by turning on an ignition switch. The door device security system according to claim 6, wherein the door device security system is provided.   The said security apparatus has a function which controls the motor vehicle travel control apparatus which controls driving | running | working of a motor vehicle according to locking and unlocking of the motor vehicle door by a keyless entry system. The door device security system described.   The door security system according to any one of claims 4 to 11, wherein an external terminal connected to the vehicle battery is provided outside the vehicle.