JPH0613282B2 - How to prevent car theft - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an antitheft method for a vehicle, and more specifically,
The present invention relates to a vehicle theft prevention method using a power seat whose seat position is automatically set.

(Prior Art) As a method for preventing the theft of an automobile, for example, the number and type of lock tumblers for cylinder locks on the doors are increased to increase the number of effective combinations of keys, or an alarm is issued when the door is opened without performing a predetermined procedure. There is a way to attach the emitting device to the car.

(Problems to be Solved by the Invention) However, the above-mentioned vehicle theft prevention method has a problem that it is difficult to identify the thief unless the third party inquires the vehicle number etc. once the vehicle is stolen.

The present invention has been made in view of the above problems, and an object of the present invention is to realize a vehicle theft prevention method capable of preventing theft and easily identifying a stolen vehicle even if the vehicle is once stolen.

(Means for Solving Problems) The above-mentioned problems are solved by the motor driven seat cushion,
A method for preventing theft of an automobile equipped with a power seat that is capable of changing the seat position by moving the seat back, in which the seat position of the power seat before the anti-theft seat position is stored. Detecting that a predetermined door lock operation has been performed, and responding to this detection result, drive the power seat so that at least the predetermined antitheft seat position with the seat back tilted forward, It is detected that the door unlocking operation has been performed, and the power seat is driven from the anti-theft seat position to the normal seat position in response to the detection result to restore the seat back. It is solved by the anti-theft method.

(Operation) By performing a predetermined door lock operation, for example, a keyless lock, the seat back of the power seat is tilted forward to move to the anti-theft position, and by performing a door unlock operation, the seat back is locked by the door lock. Return to the previous seat position.

Example An example of the present invention will be described below with reference to FIGS. 1 to 5. FIG. 1 is a view for explaining the state of the power seat 1, in which 1a is a seat back and 1b is a seat cushion. The power seat 1 drawn by a solid line is in a normal seat position, and the power seat 1 drawn by a chain double-dashed line is that the seat back 1a tilts forward in the direction of the steering wheel 2 and the seat cushion 1b slides forward. The anti-theft seat position is shown in which no one can enter between the power seat 1 and the steering wheel 2 and cannot drive.
FIG. 2 shows the vicinity of a door of an automobile having the system of the present invention, 3 is a door, 4 is a locking knob provided inside the door 3, 5 is an outside handle which is operated when the door is opened from outside the vehicle, 6 Is a key device for locking the door 3 from outside the vehicle, and 7 is an anti-theft switch provided on the dash panel.

FIG. 3 is a block diagram of the system. Reference numeral 8 in the figure denotes a microcomputer (hereinafter abbreviated as MPU), which outputs a control signal to a motor drive circuit 9 in response to a signal applied from a sensor described later to rotate the motor 10 in a predetermined direction by a predetermined amount. 11 is a locking knob sensor that detects whether or not the locking knob 4 is in the lock position, and 12 is the door 3
Is a door sensor that detects whether it is open or closed, 13 is a key sensor that detects whether a key rotor (not shown) of the key device 6 has rotated, and the output signal of each sensor is taken into the MPU 8. Be done. Reference numeral 14 denotes a seat position sensor that detects a tilt angle of the seat back 1a that moves based on the rotation of the motor 10 and a slide amount of the seat cushion 1b in the front-rear direction. An analog output signal of the seat position sensor 14 is an A / D converter. After being converted into a digital signal at 15, it is taken into the MPU 8.

Next, the operation of the above configuration will be described with reference to the flow charts shown in FIGS. First, the operation of the system set of this embodiment will be described with reference to FIG. The MPU 8 first checks whether the anti-theft switch 7 has been pressed (step 2
0) If pressed, the anti-theft system for automobiles of this embodiment becomes operable and the process proceeds to the next step. In this embodiment, the keyless lock, which is one of the door lock methods, is used to move to the anti-theft seat position. Therefore, the MPU 8 checks whether or not the locking knob 4 is pushed to the lock position while the door 3 is open. Specifically, in step 21, it is determined from the outputs of the locking knob sensor 11 and the door sensor 12 whether the door 3 was in the open state or the closed state when the locking knob 4 was in the lock position. If the door 3 is in the closed state when the locking knob 4 is in the lock position, the keyless lock will not be performed, so the determination in step 21 is continued and the process does not proceed to step 22. If the door 3 is in the open state when the locking knob 24 is set to the lock position, it is considered that the keyless lock is being operated, and therefore the process proceeds to the next step 22. In step 22, whether the door 3 is open or closed is determined by the output of the door sensor 12. When the door 3 is closed, the process proceeds to the next step 23,
Immediately after the door 3 is determined to be in the closed state, it is determined whether the locking knob 4 is in the lock position for 2 seconds, for example. This is to confirm that self-cancelling is not performed. Here, if the locking knob 4 returns to the unlocked position within 2 seconds, self-cancelling works and the locking knob 4 is canceled from the locked position.
Go to and keep watching if the keyless lock operation is performed again. On the other hand, the locking knob 4 moves to the locked position.
If it is held for a second, it is determined that the keyless lock has been performed, and the process proceeds to the next step 24. In step 24, the current seat position data (before shifting to the anti-theft seat position) is stored, and in the next step 25, the power seat 1 is turned on. Then, in step 26, the seat back 1a and the seat cushion 1b are moved to a preset anti-theft seat position (see FIG. 1). The data of the movement amount is detected by the sheet position sensor 14 and taken into the MPU 8. When the movement is completed, the power of the power seat 1 is turned off in step 27, and the system set of this embodiment is completed.

Next, with reference to FIG. 5, the operation of releasing the system of this embodiment will be described. First, when the key plate (not shown) is used to rotate the key rotor of the key device 6, the MPU determines that a proper door unlock operation has been performed (step 3).
0). When it is determined that the regular door unlock is performed, the power of the power seat 1 is turned on in the next step 31, the power seat 1 is returned to the seat position stored in step 24 in step 32, and the return is completed. In step 33, the power of the power seat 1 is turned off, and the system release of this embodiment is completed.

With such a configuration, in the case of theft such as breaking the window glass to unlock the door during the system setting, the power seat 1 is in the antitheft seat position even if the door is unlocked, and the operation is Since it is not possible, theft can be prevented. Furthermore, even if the power seat 1 in the anti-theft seat position is destroyed and a vehicle is stolen, the seat back 1a does not stand normally, so that a third person can easily identify the theft. Also, press the anti-theft switch 7,
Further, since the system of the present embodiment does not operate without the keyless lock, it is possible to set the antitheft system and to perform the keyless lock without setting the antitheft system.

The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the locking knob 4 can perform this function without providing the antitheft switch 7. However, in this case, the locking knob 4 is pushed down to the locked position, and the outside handle 5 is operated while the door 3 is being operated.
If you do a keyless lock made by closing
It is always an anti-theft system set, and cannot be simply keyless locked. The seat back 1a may be tilted forward to the antitheft seat position. The system can also be combined with other anti-theft systems. Further, the key device is not limited to a cylinder lock for rotating the key rotor with a key plate, but may be a key device using a ten-key pad or a device using light rays, ultrasonic waves, magnetism or the like.

(Effects of the Invention) As described above, according to the present invention, it is possible to prevent theft and to easily identify a stolen vehicle even if the vehicle is stolen. Further, since the door is returned to the seat position before the door is locked by the unlocking operation, the driver does not feel uncomfortable.

[Brief description of drawings]

FIG. 1 is an explanatory view of the state of a power seat in one embodiment of the present invention, FIG. 2 is a perspective view of the vicinity of a door of an automobile in one embodiment of the present invention, and FIG. 3 is one embodiment of a control system. FIG. 4 is a block diagram shown in FIG. 4, FIG. 4 is a flow chart showing an operation flow of a set of the system according to one embodiment of the present invention, and FIG. 5 is a flow chart showing a flow of operation of releasing the system in FIG. 1 ... Power seat, 1a ... Seat back 1b ... Seat cushion 2 ... Handle, 3 ... Door 4 ... Locking knob 5 ... Outside handle 6 ... Key device, 7 ... Anti-theft button

Claims (1)

[Claims] 1. An antitheft method for an automobile provided with a power seat configured to be able to change a seat position by moving a seat cushion and a seat back by driving a motor. The seat position of the power seat before it is stored is detected, and a predetermined door lock operation is detected, and in accordance with this detection result, at least the predetermined anti-theft seat position with the seat back tilted forward. The power seat is driven so that the normal door unlock operation is performed, and the power seat is driven from the anti-theft seat position to the normal seat position according to the detection result. A method for preventing the theft of an automobile, which comprises restoring the seat back.