JP2002283960A - Steering lock control device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a possibility of unnecessarily switching lock and unlock states of a steering device, even if an abnormality is generated in either one of first and second microcomputers in a steering lock control device for a vehicle provided with a steering lock means for switching the lock and unlock states according to an operation of an electric actuator, a first microcomputer for outputting a command signal for fixing the operation state of the electric actuator, a driver for driving the electric actuator and a second microcomputer capable of controlling the operation of the driver according to the command signal inputted from the first microcomputer. SOLUTION: The first microcomputer 10 controls continuity/interruption between a battery 14 and the driver 11 mounted on the vehicle to be a continuity state by time required for switching the lock and unlock states by the steering lock means 5 when outputting the command signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering lock control device for a vehicle, and more particularly to an improvement in a control device for electrically switching a lock and unlock state of a steering lock by a keyless entry device or the like.

[0002]

2. Description of the Related Art Conventionally, in such a control device, when a vehicle driver carrying a portable transmitter / receiver enters a passenger compartment, the first operation is performed by bidirectional communication with the portable transmitter / receiver. Microcomputer outputs a command signal for unlocking the steering device, and receives the command signal.
The microcomputer controls the operation of the driver, so that the electric actuator operates so that the steering device is unlocked. A command signal for the first microcomputer to lock the steering device in response to the two-way communication with the portable transmitter / receiver being interrupted by the vehicle driver carrying the portable transmitter / receiver going out of the vehicle. And the second microcomputer that has received the command signal controls the operation of the driver, so that the electric actuator operates to lock the steering device.

[0003]

In such a steering lock control device, it is essential that the operation for switching between locking and unlocking of the steering device is performed while the vehicle is stopped.
An abnormality may occur in any of the first and second microcomputers, and when such an abnormality occurs, the lock and unlock states of the steering device may be unnecessarily switched.

The present invention has been made in view of such circumstances, and even if an abnormality occurs in one of the first and second microcomputers, the lock and unlock states of the steering device can be switched unnecessarily. It is an object of the present invention to provide a vehicle steering lock control device that eliminates the problem.

[0005]

In order to achieve the above object, a first aspect of the present invention is a steering lock means having an electric actuator and switching between a locked state and an unlocked state according to the operation of the electric actuator; A first microcomputer that outputs a command signal that determines an operation state of the electric actuator; a driver that drives the electric actuator; and a second microcomputer that can control the operation of the driver according to a command signal input from the first microcomputer.
A first microcomputer, which controls conduction and interruption between a battery mounted on the vehicle and the driver, when the command signal is output, the steering lock means is in a locked and unlocked state. Is controlled so as to be in a conductive state only for a time necessary to switch the state.

According to the configuration of the first aspect of the present invention, the driver only needs to output a command signal from the first microcomputer to switch the steering device from one of the locked state and the unlocked state to the other. In a state where the power is supplied from the battery and the switching between the locked state and the unlocked state is not required, the driver is inactivated, so that even if the second microcomputer becomes abnormal, the steering lock means is not activated. There is no unnecessary switching between locked and unlocked states.

According to a second aspect of the present invention, there is provided a steering lock means having an electric actuator and switching between a locked state and an unlocked state according to the operation of the electric actuator, and outputs a command signal for determining an operation state of the electric actuator. A steering lock control device for a vehicle, comprising: a first microcomputer; a driver for driving the electric actuator; and a second microcomputer capable of controlling the operation of the driver in accordance with a command signal input from the first microcomputer. A traveling state detecting means for detecting a traveling state of the vehicle and inputting the traveling state to a second microcomputer;
The microcomputer controls the operation of the driver in response to a command signal input from the first microcomputer on condition that the vehicle is in a stopped state based on the detection signal of the traveling state detection means. It is characterized by.

According to the configuration of the second aspect of the present invention, the second microcomputer can control the operation of the driver only when the vehicle is stopped, and therefore, the first microcomputer that has become abnormal can be controlled. Even if the command signal is output from the microcomputer of the vehicle while the vehicle is running, the second microcomputer does not control the operation of the driver, and the locking and unlocking of the steering device due to the abnormality of the first microcomputer. The locked state is not undesirably switched during running of the vehicle.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on one embodiment of the present invention shown in the attached drawings.

In FIG. 1, the steering lock control device for a vehicle is used for a keyless entry device. Main control means 6 enabling bidirectional communication with the portable transmitter / receiver when the vehicle driver carrying the receiver enters the cabin, and a command from the main control means 6 And a lock operation control means 7 for controlling the operation of the steering lock means 5 in accordance with

The steering lock means 5 includes, for example, an electric motor 8 and a solenoid 9 as electric actuators, and the operation of the electric motor 8 and the solenoid 9 switches between a locked state and an unlocked state of the steering device.

The main control means 6 includes a first microcomputer 10. The first microcomputer 10 includes an electric motor 8 and a solenoid 9 provided in the steering lock means 5.
Command signal for determining the operation state of the two-way communication line 13
Can be output to

The lock operation control means 7 includes a driver 11 for driving the electric motor 8 and the solenoid 9 of the steering lock means 5 and a second control means for controlling the operation of the driver 11.
Microcomputer 12. The second microcomputer 12 is capable of two-way communication with the first microcomputer 10 via a two-way communication line 13, and operates in response to a command signal input from the first microcomputer 10. Operation can be controlled.

The battery 14 mounted on the vehicle
Is connected to the first microcomputer 10 and the second microcomputer at all times, and is connected to a driver 11 provided in the lock operation control means 7 so as to be able to switch between conduction and cutoff. Line 1
5, the conduction and cutoff between the battery 14 and the driver 11 are controlled. Moreover, the first microcomputer 10
Controlling the conduction / interruption so that, when a command signal is given to the second microcomputer 12, the steering lock means 5 is turned on for a time necessary for switching from one of the locked and unlocked states to the other. It is.

The second microcomputer 12 includes a shift position detector 16 for detecting that the shift lever of the automatic transmission is at the P position and a vehicle speed as travel condition detecting means for detecting the travel condition of the vehicle. Detector 17
Is input, and the second microcomputer 12
The operation of the driver 11 is performed in response to a command signal input from the first microcomputer 10 on condition that it is confirmed that the vehicle is in a stopped state based on the detection signals of the shift position detector 16 and the vehicle speed detector 17. Control.

Next, the operation of this embodiment will be described. The driver 11 included in the lock operation control means 7 for controlling the operation of the electric motor 8 and the solenoid 9 of the steering lock means 5 and the battery 14 mounted on the vehicle are used. The conduction / interruption between them is controlled by a first microcomputer 10 included in the main control means 6. When the first microcomputer 10 supplies a command signal to the second microcomputer 12, the first microcomputer 10 controls the steering lock means 5. Is a state in which the driver 11 and the battery 14 are electrically connected for a time necessary for switching between the locked state and the unlocked state.

Therefore, the power is supplied to the driver 11 from the battery 14 only when the command signal is output from the first microcomputer 10 to switch the locked state and the unlocked state of the steering device. The driver 11 is inactive in a state where switching of the state is unnecessary. Therefore, the second microcomputer 1
Even if 2 is abnormal, the lock and unlock states of the steering device are not unnecessarily switched.

The second microcomputer 12 receives detection signals from a shift position detector 16 and a vehicle speed detector 17 for detecting that the shift lever of the automatic transmission is at the P position. The microcomputer 12 of the driver 11 responds to a command signal input from the first microcomputer 10 on condition that it has confirmed that the vehicle is in a stopped state based on the detection signals of the detectors 16 and 17.
Controls the operation of.

That is, the second microcomputer 12 can control the operation of the driver 11 only when the vehicle is at a standstill. Even if the command signal is output while the vehicle is running, the second microcomputer 12 does not control the operation of the driver 11 and the locked and unlocked state of the steering device is changed due to the abnormality of the first microcomputer 10 during vehicle running. There is no undesired switching during.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible.

[0021]

As described above, according to the first aspect of the present invention, the driver can be deactivated in the state where switching between the locked state and the unlocked state is unnecessary, and the second microcomputer becomes abnormal. However, the steering lock means does not unnecessarily switch between the locked state and the unlocked state.

Further, according to the second aspect of the present invention, the lock and unlock states of the steering device are not undesirably switched during running of the vehicle due to the abnormality of the first microcomputer.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a vehicle steering lock control device.

[Explanation of symbols]

 8 ... Electric motor as electric actuator 9 ... Solenoid as electric actuator 5 ... Steering lock means 10 ... First microcomputer 11 ... Driver 12 ... Second microcomputer 14 ... Battery 16: shift position detector as traveling state detecting means 17: vehicle speed detector as traveling state detecting means

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masahiko Sueyoshi 3700, Wakayama, Shimonaka, Sadohara-cho, Miyazaki-gun, Miyazaki Prefecture Inside Honda Lock Co., Ltd. 3700 Wadayama Inside Honda Rock Co., Ltd. (72) Inventor Yu Asakura 1-4-1 Chuo, Wako-shi, Saitama Pref. Honda Research Institute, Inc. (72) Akira Uekura 1-4-4 Chuo, Wako-shi, Saitama No. 1 Inside Honda R & D Co., Ltd. (72) Inventor Kentaro Yoshimura 1-4-1 Chuo, Wako-shi, Saitama Pref.

Claims (2)

[Claims] A steering lock means (5) having an electric actuator (8, 9) and switching between a locked state and an unlocked state in accordance with the operation of the electric actuator (8, 9);
A first microcomputer (10) for outputting a command signal for determining an operation state of 9), a driver (11) for driving the electric actuator (8, 9), and a first microcomputer (10)
And a second microcomputer (12) capable of controlling the operation of the driver (11) in accordance with a command signal input from the vehicle, wherein the first microcomputer (10) is mounted on the vehicle. Control between the battery (14) and the driver (11) so that the steering lock means (5) is in a conductive state for a time necessary for switching between the locked state and the unlocked state when the command signal is output. A vehicle steering lock control device. 2. A steering lock means (5) having an electric actuator (8, 9) and switching between a locked state and an unlocked state in accordance with the operation of the electric actuator (8, 9);
A first microcomputer (10) for outputting a command signal for determining an operation state of 9), a driver (11) for driving the electric actuator (8, 9), and a first microcomputer (10)
And a second microcomputer (12) capable of controlling the operation of the driver (11) in response to a command signal input from the vehicle. 12), and includes running state detecting means (16, 17) input to the second microcomputer (1).
2) responding to a command signal input from the first microcomputer (10) on condition that it has been confirmed that the vehicle is in a stopped state based on the detection signal of the traveling state detecting means (16, 17). A steering lock control device for a vehicle, wherein the operation of the driver (11) is controlled.