JP4858365B2 - Vehicle anti-theft device - Google Patents

Description

  The present invention belongs to a technical field related to a vehicle antitheft device in which a steering lock actuator is driven and controlled to selectively switch a steering between a locked state and an unlocked state.

  In recent years, it has been proposed to install a smart keyless entry system in a vehicle such as an automobile for the purpose of improving operability. In this smart keyless entry system, the passenger can lock / unlock the door by operating the outer door handle of the door or a switch provided in the vicinity thereof while holding the portable device. When the vehicle is present in the vehicle interior, the engine can be started and stopped by operating a push-type or rotary ignition switch provided in the vehicle interior.

On the other hand, in order to ensure the anti-theft property of the vehicle, the vehicle is provided with a steering lock mechanism. This steering lock mechanism is a mechanism that improves theft prevention by restricting the rotation of the steering in the parking state of the vehicle. In the steering lock mechanism of the vehicle having the smart keyless entry system as described above, the steering shaft The lock member that can be engaged and disengaged is driven by a steering lock actuator, and the drive of the actuator is controlled by a control device, so that the lock / unlock state of the steering is switched (for example, Patent Document 1 and Patent Document). 2).
Japanese Patent Laid-Open No. 2001-1865 JP 2003-293923 A

  By the way, in the anti-theft device that drives the steering lock actuator and switches the steering lock / unlock state as described above, the drive sound of the actuator may become relatively loud. In order to make the sound inconspicuous, for example, it is preferable to switch the steering lock / unlock state when the door is opened and closed (change from the open state to the closed state or change from the closed state to the open state). Therefore, as a timing for switching the steering from the unlocked state to the locked state, it is conceivable that the opening / closing of the door is detected when the ignition switch is turned off.

  However, at such a timing for switching to the locked state, for example, when the occupant turns off the ignition switch to take a nap in the passenger compartment, the opening / closing of the door is not detected. Even if the vehicle is in the passenger compartment, there is room for improvement from the viewpoint of preventing vehicle theft. In addition, even when the opening / closing of the door cannot be detected due to a failure of a switch or the like for detecting the opening / closing of the door or due to a half-door, the steering is not locked, and this is a problem from the viewpoint of reliably preventing vehicle theft. There is.

  The present invention has been made in view of such points, and an object of the present invention is to appropriately switch the steering timing to the locked state when the steering lock / unlock state is switched by the steering lock actuator. This is to ensure that the vehicle can be prevented from being stolen.

  In order to achieve the above object, according to the present invention, when the steering is unlocked and the ignition switch is in the off state, the lock knob operated by the vehicle occupant is actuated to lock the door. The steering is switched to the locked state when this is detected.

  Specifically, in the invention of claim 1, a lock member that is engaged with and disengaged from the movable member that is interlocked with the steering operation and selectively switches the steering between the locked state and the unlocked state, and the lock member, The present invention is directed to a vehicle antitheft device including a steering lock actuator that drives the steering lock / unlock state to be switched and a drive control unit that controls the drive of the actuator.

  An ignition switch operated by the vehicle occupant and a lock knob provided on the vehicle compartment side of the vehicle door and operated by the vehicle occupant to lock / unlock the door lock the door. A lock knob operation detecting means for detecting that the lock knob operation detecting means is operated when the steering is in an unlocked state and the ignition switch is in an off state. When it is detected that the lock knob is operated to lock the door, the steering lock actuator is driven to switch the steering to the locked state.

  With the above configuration, when the passenger tries to take a nap in the passenger compartment, the ignition switch is turned off, and the door is locked by operating the lock knob directly or by operating the door lock actuator by operating the switch. Switch to state. In other words, when the passenger is traveling, the door is unlocked so that the door can be smoothly opened in case of an accident, and when taking a nap, the occupant often locks the door for safety. . If the door is thus locked, the steering is switched to the locked state, so that the passenger can take a nap with peace of mind. Further, when the occupant leaves the vehicle, the operation switch of the portable device having an operation switch for locking / unlocking the door is operated, or the outer door handle or a switch provided in the vicinity thereof in the smart keyless entry system. Since the door is locked by operating or the like, at this time, the lock knob operates to the side that locks the door, and the steering is switched to the locked state. Therefore, vehicle theft prevention can be reliably performed. Furthermore, if the door is locked by the door lock actuator, the drive sound of the steering lock actuator overlaps with the drive sound of the door lock actuator (door lock sound). Even if it doesn't stand out.

  According to a second aspect of the present invention, in the first aspect of the present invention, the apparatus further comprises door open / closed state detecting means for detecting an open / closed state of the door, and the drive control means includes the steering in an unlocked state and the ignition. When the switch is in the OFF state, the door open / close state detection means does not detect that the door open / close state has changed, and the lock knob operation detection means operates the lock knob to lock the door. When this is detected, the steering lock actuator is driven to switch the steering to the locked state.

  According to a third aspect of the present invention, in the second aspect of the present invention, the drive control means includes the door open / closed state detecting means when the steering is in an unlocked state and the ignition switch is in an off state. When it is detected that the opening / closing state of the door has changed, the steering lock actuator is driven to switch the steering to the locked state.

  According to the second and third aspects of the invention, when the steering is unlocked and the ignition switch is off, the steering is switched to the locked state when the door open / close state changes. Thus, since the driving sound of the steering lock actuator overlaps with the door opening / closing sound, even if the driving sound is loud, it becomes inconspicuous. On the other hand, when the occupant takes a nap, the open / closed state of the door does not change, but if the door is locked by operating the lock knob or the like, the steering is switched to the locked state. An operation switch for locking / unlocking the door when the occupant leaves the vehicle, even if the occupant opens / closes the door to get out of the vehicle, even if the opening / closing of the door is not detected. Since the door is locked by operating the operation switch of the portable device having the door or by operating the outer door handle or a switch provided in the vicinity thereof in the smart keyless entry system, the lock knob locks the door at this time. The steering is switched to the locked state. Therefore, vehicle theft prevention can be reliably performed.

  According to a fourth aspect of the present invention, in the first aspect of the invention, a door lock actuator for locking / unlocking the door of the vehicle, and an instruction means for transmitting a lock instruction for locking the door or an unlock instruction for unlocking the door. A door lock control means for receiving a lock instruction or an unlock instruction from the instruction means and driving the door lock actuator according to the instruction, wherein the drive control means is configured such that the steering is unlocked. When the ignition switch is in the off state, the door lock control means does not receive a lock instruction from the instruction means, and the lock knob operation detection means causes the lock knob to open the door. When the steering lock is detected, the steering lock By driving the actuator, and that is configured to switch the steering locked.

  According to a fifth aspect of the present invention, in the fourth aspect of the invention, the drive control means is configured to lock the driving means when the steering is in an unlocked state and the ignition switch is in an off state. When the instruction is received, the steering lock actuator is driven to switch the steering to the locked state.

  According to the inventions of claims 4 and 5, a portable device having an operation switch for locking / unlocking a door and a smart keyless entry when the steering is unlocked and the ignition switch is off. In the system, when the door lock control means receives a lock instruction from an instruction means such as an outer door handle or a switch provided in the vicinity thereof, the driving sound of the steering lock actuator is obtained by switching the steering to the locked state. Since it overlaps with the drive sound of the door lock actuator (door lock sound), it becomes inconspicuous even if the drive sound of the steering lock actuator is loud. On the other hand, when the occupant takes a nap, the door lock control means usually does not receive the lock instruction from the instruction means, but if the door is locked by operating the lock knob or the like, the steering is switched to the locked state. In addition, when the occupant goes out of the vehicle, if the door lock control means does not receive a lock instruction from the instruction means, the door is not locked and the door lock sound is not generated. The mobile phone is judged to be abnormal and the door is locked with a mechanical key. As a result, the steering is locked, so that vehicle theft can be reliably prevented.

  According to a sixth aspect of the present invention, in the first aspect of the invention, the vehicle control apparatus further comprises vehicle stop state detecting means for detecting the stop state of the vehicle, wherein the drive control means has the steering in an unlocked state and the ignition. When the switch is in the OFF state, the vehicle stop state detection means detects the vehicle stop state when the lock knob operation detection means detects that the lock knob is operated to the side that locks the door. On this condition, the steering lock actuator is driven to switch the steering to the locked state.

  Thus, it is possible to reliably prevent the steering from being switched to the locked state during traveling of the vehicle, and to ensure safety during traveling.

  As described above, according to the vehicle antitheft device of the present invention, the lock knob operated by the vehicle occupant locks the door when the steering is unlocked and the ignition switch is off. By switching the steering to the locked state when it is detected that the vehicle has been actuated to the side, the vehicle is reliably prevented from being stolen during a nap in the passenger compartment or when the door open / close switch is broken. Will be able to.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a configuration of a vehicle antitheft device 1 according to an embodiment of the present invention. This anti-theft device 1 rotates a keyless entry device 2 that can lock / unlock a door and start an engine 5 without using a mechanical key, and a steering shaft 7 that is a movable member interlocked with a steering operation. And a steering lock device 3 for making the steering operation impossible. The engine 5 is controlled by an engine control unit (ECU) 6.

  The keyless entry device 2 includes a first control unit 10 and a first driver 11. The first control unit 10 includes a CPU 10a that performs information processing, a ROM 10b that stores programs and data, a RAM 10c that functions as a main storage device of the CPU 10a and provides a work area to the CPU 10a, and an EEPROM (electrically erasable programable ROM). ) 10d. The EEPROM 10d stores the current locked / unlocked state of the steering shaft 7 and stores a predetermined identification code in advance.

  The first control unit 10 is electrically connected to the first driver 11, push-type or rotary-type ignition switch 22, ECU 6, door lock control unit 41, and second control unit 30 described later. The mobile phone 21 is configured to be capable of wireless communication with the portable device 21 that wirelessly transmits the same identification code as that stored in the EEPROM 10d of the first control unit 10. Then, the power (electric power) of the battery 20 is supplied to the first control unit 10 and the first driver 11, and the first driver 11 is controlled by the first control unit 10, and the power supply is steered from the first driver 11. It is supplied to a later-described second control unit 30 and second driver 31 in the apparatus 3 so that supply can be stopped. The power is supplied from the first control unit 10 to the ECU 6 and the anti-lock brake system (ABS) 51 so that the supply can be stopped. Further, the power is supplied from the first control unit 10 to the door lock control unit 41 and switches 43 to 45 described later, and can be stopped from the door lock control unit 41 to the door lock actuator 42 described later. Supplied.

  The ABS 51 controls the braking force of the braking device so as to suppress the wheel lock at the time of braking of the vehicle, and has a vehicle speed detector 52 that detects the traveling speed of the vehicle. In this embodiment, the vehicle speed detection unit 52 constitutes a vehicle stop state detection unit that detects the stop state of the vehicle, and the vehicle speed is 0 (even if the vehicle speed is not exactly 0, the vehicle speed is substantially It is the maximum value that can be assumed to be 0, and may be, for example, 4 km / h) or less, and it is detected that the vehicle is in a stopped state. The vehicle speed detection unit 52 may be configured by a general vehicle speed sensor, or may estimate the vehicle speed from the speed of each wheel detected by each wheel speed sensor that detects the speed of each wheel. .

  The door lock control unit 41 controls the drive of the door lock actuator 42 for locking / unlocking the door of the vehicle, and drives the door lock actuator 42 based on a command from the first control unit 10. To do. The door lock control unit 41 includes a door open / close state detection switch 43 that detects the open / close state of the door, a door lock / unlock state detection switch 44 that detects the lock / unlock state of the door, and an outer door of the door. A door lock / unlock switch 45 provided at the handle or in the vicinity thereof is connected, and information from each of the switches 43 to 45 is input to the door lock control unit 41, and further from the door lock control unit 41 to the first Input to the control unit 10.

  The door lock / unlock state detection switch 44 is provided on the vehicle compartment side of the door of the vehicle and is operated by an occupant of the vehicle to lock / unlock the door or an interlocking member interlocked with the lock knob ( For example, the lock / unlock state of the door is detected by detecting the operating position of a link member that connects the lock knob and the lock mechanism), and when the vehicle occupant directly operates the lock knob. Even when the door lock actuator 42 is driven, the lock knob and the interlocking member can be operated to detect the locked / unlocked state of the door, and the lock knob changes from the unlocked position to the locked position. When it does, it detects that the lock knob act | operated to the side which locks a door. Thus, the door lock / unlock state detection switch 44 constitutes a lock knob operation detection means for detecting that the lock knob has been operated to the door locking side.

  The first control unit 10 constitutes an in-vehicle device that is mounted on a vehicle and receives an identification code from the portable device 21, and the identification code received by the first control unit 10 is stored in advance in the EEPROM 10d. The door can be locked / unlocked when it coincides with the identification code, and when the occupant operates the door lock / unlock switch 45 in this state, the door lock / unlock switch 45 switches to the first control unit 10. A lock instruction for locking the door or an unlock instruction for unlocking is transmitted, and the first control unit 10 receives this instruction, and the door lock actuator 42 via the door lock control unit 41 according to the instruction. To lock / unlock the door. Thus, the door lock / unlock switch 45 constitutes an instruction means for transmitting a lock instruction or an unlock instruction, and the first control unit 10 and the door lock control unit 41 receive a lock instruction or an unlock from the instruction means. The door lock control means is configured to receive the lock instruction and drive the door lock actuator in accordance with the instruction. The instruction means may be a portable device having an operation switch for locking / unlocking the door. In this case, the portable device issues a lock instruction or unlock instruction by operating the occupant's operation switch. 1 is transmitted to the control unit 10.

  Further, the first control unit 10 is configured to switch the ignition switch when the identification code received by the first control unit 10 matches the identification code stored in the EEPROM 10d in a state where the portable device 21 is present in the passenger compartment. 22 can be turned on. That is, the on-vehicle control device including the engine 5 can be operated. As described above, the first control unit 10 and the portable device 21 are mounted on the vehicle when the identification code received by the first control unit 10 matches the identification code stored in the first control unit 10 in advance. A smart keyless entry system that enables operation of the control device is configured.

  In the smart keyless entry system, when the occupant of the vehicle operates the door lock / unlock switch 45 while holding the portable device 21 to get into the vehicle, the door is unlocked, the door is opened and the vehicle is opened. When entering the room, the ignition switch 22 can be turned on. Then, the engine 5 is started by operating the ignition switch 22 to turn it on.

  On the other hand, when the occupant turns off the ignition switch 22 after the vehicle stops, gets off the vehicle while holding the portable device 21, closes the door, and operates the door lock / unlock switch 45, the door is locked. .

  The door can be locked / unlocked by inserting and turning the mechanical key into the key slot provided on the outside of the door of the vehicle so that it can cope with a failure of the portable device 21 or a battery exhaustion. The engine 5 can be started by inserting the mechanical key into a key slot provided in the steering column and turning it.

  The steering lock device 3 includes a second control unit 30, a second driver 31, a drive mechanism 33 including an electric motor 32 as a steering lock actuator, and a lock member 34. The second control unit 30 includes a CPU 30a that performs information processing, a ROM 30b that stores programs and data, a RAM 30c that functions as a main storage device of the CPU 30a and provides a work area to the CPU 30a, and an EEPROM 30d. . The EEPROM 30d stores the current lock / unlock state of the steering shaft 7.

  The second control unit 30 is electrically connected to the first control unit 10, the first driver 11, and the second driver 31, and is in a locked / unlocked state stored in the EEPROM 30d to the first control unit 10. Send information. The first control unit 10 stores this information in the EEPROM 10d. The second driver 31 is controlled by the second control unit 30 so that the power is supplied from the second driver 31 to the electric motor 32 so that the supply can be stopped. The electric motor 32 is driven while the power is supplied to the electric motor 32.

  The lock member 34 is engaged with and disengaged from an engaged portion 7a (concave portion) provided on the steering shaft 7 to selectively switch the steering shaft 7 (that is, the steering) between a locked state and an unlocked state. The electric motor 32 drives the lock member 34 so that the lock / unlock state of the steering shaft 7 is switched. The drive mechanism 33 includes a gear that transmits the output of the electric motor 32 to the lock member 34.

  The power of the battery 20 is supplied to the first control unit 10, the first driver 11, the door lock control unit 41, and the switches 43 to 45 when the ignition switch 22 is in the OFF state. The second driver 31 and the ABS 51 are basically not supplied. However, when it is time to drive the electric motor 32 as will be described later (when each determination in steps S2, S3, and S4 is YES in the flowchart described later), the power source is connected to the second control unit 30, When the second driver 31 is controlled by the second control unit 30 and the electric power is supplied to the electric motor 32, and the driving of the electric motor 32 is completed, the first control unit 30 Information indicating the completion (update information of an EEPROM 10d described later) is received from the second control unit 30, and power supply to the second control unit 30, the second driver 31, and the ABS 51 is stopped. Note that when the ignition switch 22 is in the off state, the power is not always supplied to the ECU 6, but is supplied when the ignition switch 22 is in the on state. Further, when the ignition switch 22 is turned on, the power is supplied to the second control unit 30, the second driver 31, and the ABS 51.

  The first control unit 10 outputs to the second control unit 30 a command for switching the steering shaft 7 from one of the locked state and the unlocked state to the other at a timing described later. The second control unit 30 In response, the electric motor 32 is driven via the second driver 31, and the lock member 34 is engaged with the engaged portion 7a, or is unlocked from the engaged portion 7a. Move from one to the other. Thus, the first and second control units 10 and 30 constitute drive control means for controlling the drive of the electric motor 32 (steering lock actuator). Then, when the switching of the lock / unlock state of the steering shaft 7 is completed, the second control unit 30 stops the power supply to the electric motor 32 and stores the lock / unlock state information stored in the EEPROM 10d. And the update information is transmitted to the first control unit 10.

  The first and second control units 10 and 30 operate as follows when the steering shaft 7 is switched from the unlocked state to the locked state.

  That is, the first control unit 10 determines that the door open / close state has been changed by the door open / close state detection switch 43 when the steering shaft 7 is unlocked and the ignition switch 22 is off (this embodiment). In the embodiment, when it is detected that the door is changed from the open state to the closed state, a command to switch the steering shaft 7 to the locked state is provided on the condition that the vehicle speed detection unit 52 detects the stop state of the vehicle. Is output to the second control unit 30, and the second control unit 30 drives the electric motor 32 to switch the steering shaft 7 from the unlocked state to the locked state. Note that the detection of the change in the open / closed state of the door may be detection of the door being changed from the closed state to the open state.

  On the other hand, when the steering shaft 7 is in the unlocked state and the ignition switch 22 is in the off state, the first control unit 10 does not detect that the door open / closed state has changed by the door open / closed state detection switch 43. Sometimes, it is determined whether or not there is a lock instruction from the door lock / unlock switch 45, and if there is a lock instruction, the steering shaft 7 is turned on condition that the vehicle speed detection unit 52 detects that the vehicle is stopped. A command to switch to the lock state is output to the second control unit 30. If there is no lock instruction, whether or not the door lock / unlock state detection switch 44 detects that the lock knob has been actuated to lock the door. Determine whether. If it is not detected that the lock knob is operated to lock the door, a command for switching the steering shaft 7 to the locked state is not output to the second control unit 30, that is, the steering shaft 7 is not switched to the locked state. When it is detected that the lock knob is operated to lock the door, the second control unit 30 issues a command to switch the steering shaft 7 to the locked state on condition that the vehicle speed detecting unit 52 detects the stop state of the vehicle. To switch the steering shaft 7 to the locked state.

  As described above, when the vehicle occupant operates the door lock / unlock switch 45 while holding the portable device 21 to get into the vehicle, the door is unlocked, but the first control unit 10 At the timing, an instruction to switch the steering shaft 7 from the locked state to the unlocked state is output to the second control unit 30. Alternatively, an instruction to switch the steering shaft 7 to the unlocked state may be output to the second control unit 30 substantially simultaneously with the door being changed from the closed state to the open state after the door is unlocked. In addition, when the steering shaft 7 is in the locked state, when the ignition switch 22 is turned on, an instruction to switch the steering shaft 7 to the unlocked state is output to the second control unit 30, and the steering shaft 7 is unlocked. Switch to the locked state.

  The operation of switching the steering shaft 7 to the locked state in the first control unit 10 will be described with reference to the flowchart of FIG.

  In the first step S1, it is determined whether or not the ignition switch is in an OFF state. If the determination in step S1 is NO, the process in step S1 is repeated, while if the determination in step S1 is YES, step S2 is performed. Proceed to

  In step S2, it is determined whether or not the door has been closed from the open state. If the determination in step S2 is NO, the process proceeds to step S3. If the determination in step S2 is YES, step S5 is performed. Proceed to

  In step S3, it is determined whether or not there is a lock instruction from the door lock / unlock switch 45. When the determination in step S3 is NO, the process proceeds to step S4, while when the determination in step S3 is YES. The process proceeds to step S5.

  In step S4, it is determined whether or not the lock knob is operated to lock the door. When the determination in step S4 is NO, the process returns to step S1, while when the determination in step S4 is YES, Proceed to step S5.

  In step S5, it is determined whether or not the vehicle is in a stopped state. If the determination in step S5 is NO, the process returns to step S1. If the determination in step S5 is YES, the process proceeds to step S6. Thus, a command to switch the steering shaft 7 to the locked state is output to the second control unit 30, and this switching process is terminated.

  By the processing operation of the first and second control units 10, 30, the occupant turns off the ignition switch 22 after the vehicle stops (at this stage, the steering shaft 7 is unlocked), and then opens the door. If the door is closed by opening and holding the portable device 21, the steering shaft 7 is switched from the unlocked state to the locked state. The driving sound of the electric motor 32 at this time overlaps with the sound of closing the door, so that the driving sound of the electric motor 32 is not noticeable even when the driving sound of the electric motor 32 is loud.

  Here, when it is not detected that the door has been closed due to an abnormality of the door open / close state detection switch 43 or a half door when the door is closed, a lock instruction from the door lock / unlock switch 45 may be issued. For example, the lock instruction locks the door, and the steering shaft 7 switches from the unlocked state to the locked state. The drive sound of the electric motor 32 at this time overlaps with the drive sound (door lock sound) of the door lock actuator 42, so that the drive sound of the electric motor 32 is not noticeable.

  Further, if there is no lock instruction due to a failure of the door lock / unlock switch 45 or the like, the door is not locked and the door lock sound is not generated, so the occupant recognizes that and determines that the portable device is abnormal. Then, the door is locked with a mechanical key. As a result, the lock knob operates to the side that locks the door, so that the steering shaft 7 is switched from the unlocked state to the locked state.

  Thus, even if it cannot be detected that the door is in the closed state, the steering shaft 7 can be surely locked in the locked state by locking the door, and the vehicle theft can be reliably prevented.

  Further, when the occupant takes a nap in the passenger compartment after turning off the ignition switch 22 after the vehicle stops, the door remains closed, and the steering shaft 7 switches from the unlocked state to the locked state. Absent. On the other hand, occupants often unlock the door so that the door can be opened smoothly in case of an accident while driving the vehicle. The door is locked by driving the door lock actuator 42 by operating the lock knob directly or by operating a switch (not shown) provided on the vehicle compartment side of the vehicle door. As a result, the lock knob operates to the side that locks the door, so that the steering shaft 7 is switched from the unlocked state to the locked state. As a result, even during a nap, the vehicle can be reliably prevented from being stolen and the occupant can take a nap with peace of mind. Here, when the door is locked by directly operating the lock knob, the door lock actuator 42 does not operate. Therefore, if the driving sound of the steering lock actuator is loud, it will be noticeable. There aren't many, so it doesn't matter.

  Then, after the nap ends, when the passenger turns on the ignition switch 22 again, the steering shaft 7 is switched to the unlocked state.

  In the flowchart of the above embodiment, the process of step S2 may be omitted, and the process may proceed to step S3 when the determination of step S1 is YES. Alternatively, the process in step S3 may be omitted, and the process may proceed to step S4 when the determination in step S2 is NO. Alternatively, both the processes in steps S2 and S3 may be omitted, and the process may proceed to step S4 when the determination in step S1 is YES.

  The vehicle of the above embodiment has a smart keyless entry system. However, even if the vehicle does not have a smart keyless entry system, the steering lock actuator switches the steering lock / unlock state. The present invention can be applied to any vehicle equipped with a prevention device.

  INDUSTRIAL APPLICABILITY The present invention is useful for a vehicle antitheft device in which the steering lock / unlock state is switched by a steering lock actuator, and particularly useful for a vehicle antitheft device having a smart keyless entry system.

It is a block diagram which shows the structure of the antitheft device of the vehicle which concerns on embodiment of this invention. It is a flowchart which shows the switching process operation | movement to the locked state of the steering shaft in a 1st control unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Antitheft device 2 Keyless entry device 3 Steering lock device 7 Steering shaft (movable member interlocked with steering operation)
10 First control unit (drive control means) (door lock control means)
21 portable device 22 ignition switch 30 second control unit (drive control means)
32 Electric motor (steering lock actuator)
34 Lock member 41 Door lock control unit (door lock control means)
42 Door lock actuator 43 Door open / closed state detection switch (door open / closed state detection means)
44 Door lock / unlock state detection switch (lock knob operation detection means)
45 Door lock / unlock switch (instruction means)
52 Vehicle speed detector (vehicle stop state detection means)

Claims (6)

A lock member that engages / disengages with respect to a movable member that is interlocked with the steering operation to selectively switch the steering between a locked state and an unlocked state, and the lock member is switched between the locked / unlocked state of the steering. An antitheft device for a vehicle comprising a steering lock actuator for driving the actuator and a drive control means for controlling the drive of the actuator,
An ignition switch operated by a vehicle occupant,
A lock knob operation detecting means for detecting that a lock knob provided on the vehicle compartment side of the vehicle door and operated by an occupant of the vehicle to lock / unlock the door is actuated to lock the door; With
The drive control means detects that the lock knob is actuated to lock the door by the lock knob operation detecting means when the steering is unlocked and the ignition switch is off. An anti-theft device for a vehicle, wherein the steering lock actuator is driven to switch the steering to a locked state. The vehicle antitheft device according to claim 1,
A door opening / closing state detecting means for detecting the opening / closing state of the door;
When the steering is unlocked and the ignition switch is in an off state, the drive control means is not detected by the door opening / closing state detecting means that the door opening / closing state has changed, and When the lock knob operation detecting means detects that the lock knob is operated to lock the door, the steering lock actuator is driven to switch the steering to the locked state. A vehicle antitheft device characterized by the above. The vehicle antitheft device according to claim 2,
The drive control means, when the steering is unlocked and the ignition switch is off, when the door open / close state detecting means detects that the door open / close state has changed, An anti-theft device for a vehicle, wherein the steering lock actuator is driven to switch the steering to a locked state. The vehicle antitheft device according to claim 1,
A door lock actuator for locking / unlocking the door of the vehicle;
An instruction means for transmitting a lock instruction for locking the door or an unlock instruction for unlocking the door;
Door lock control means for receiving a lock instruction or unlock instruction from the instruction means and driving the door lock actuator in response to the instruction;
The drive control means, when the steering is unlocked and the ignition switch is off, the door lock control means does not receive a lock instruction from the instruction means, and When the lock knob operation detecting means detects that the lock knob is operated to the side that locks the door, the steering lock actuator is driven to switch the steering to the locked state. A vehicle anti-theft device. The vehicle antitheft device according to claim 4,
The drive control means drives the steering lock actuator when receiving a lock instruction from the instruction means when the steering is unlocked and the ignition switch is off. A vehicle antitheft device configured to switch the steering to a locked state. The vehicle antitheft device according to claim 1,
The vehicle further includes a vehicle stop state detecting means for detecting the vehicle stop state,
The drive control means detects that the lock knob is actuated to lock the door by the lock knob operation detecting means when the steering is unlocked and the ignition switch is off. When the vehicle stop state is detected by the vehicle stop state detecting means, the steering lock actuator is driven to switch the steering to the locked state. A vehicle anti-theft device.

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