JPS60154938A - Car theft prevention device - Google Patents

Abstract

PURPOSE:To prevent theft through normal operation of car without requiring special operation by functioning a door switch as a detection sensor to activate an alarm means. CONSTITUTION:Door switches 6L, 6R, 6B, door lock switches 7L, 7R, 7B and key cylinder switches 8L, 8R, 8B can function as sensors and the operating modes are controlled by a controller 4. Under open state of any one of left/right doors through pulling of ignition key switch 11, door lock switch 7L or 7R interlocked with a door lock lever is turned on to close all doors thus to set each switch 6L, 6R, 6B, 8L, 8R, 8B, 7L, 7R, 7B, 9, 10, etc. functionable asd a detection sensor into functionable state and to activate alarm means such as a horn 12.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an anti-theft device for a vehicle which does not require any special operation but is operated by normal vehicle handling operations.

PRIOR ART As a vehicle theft prevention means for preventing intrusion of people or objects into the interior of a vehicle, there is a known vehicle theft prevention means that operates a detection skewer sensor and drives some kind of alarm means when there is an intrusion. However, as a specific means for setting the above-mentioned detection sensor to an operable state,
The following means are known as described in Japanese Unexamined Patent Publication No. 162040 and Japanese Utility Model Application No. 50-74638.

(1) After reciting the predetermined code and keying in, get out of the car and unlock the door.

(2) Install a hidden switch at a specific location inside or outside the vehicle, and set it unconditionally by closing the door.

(3) Operate by remote control using media such as radio waves, radio waves, and ultrasonic waves.

To reset each of these means, the +11 door is opened and the recited code set when exiting the vehicle is keyed in within a certain period of time.

(2) Operate the hidden switch0 (Cancel using 31 remote control.

Operations such as these are performed.

Each method has the following disadvantages.

(1) If you forget to recite the code, you can cancel it; however, in the case of a manned parking lot, the person who sets it and the person who resets it are different, causing confusion in the ability to use the code.

(2) Since the mounting position of the switch must be randomly selected for each vehicle, it is not suitable for mass production.

(3) The remote control device becomes expensive and is less effective unless it is provided with a unique code and has a 1-to-1 correspondence like a key.

Each of these means requires an additional operation in addition to the normal vehicle handling operation, so there is a drawback that it is time-consuming in terms of operability.

OBJECTS OF THE INVENTION The present invention has been made in response to the above-mentioned problems, and it is an object of the present invention to enable operation by normal door lock operation.

The feature of the structure of the invention is that it is equipped with a detection sensor and an alarm means, and when the ignition key is removed and the door is opened, a switch linked to the door lock lever is operated, and then when the door is closed, the detection sensor is activated. The sensor is set to the enable state, and when there is an act of intrusion into the interior of the vehicle, the detection sensor is activated and the alarm means is activated.

Embodiments of the present invention will be described below with reference to the drawings.

Embodiment FIG. 1 is a schematic diagram showing a vehicle theft prevention device 7 according to an embodiment of the present invention, where 1 is the vehicle body, 2 is the front part, and 3 is the rear part s1.
4 is a controller provided inside the vehicle, and 5 is a steering wheel. 6 L, 6 R, 6, B are door switches, 7
L, 7R, 7B are door lock switches, 8L, SR, 8
B is a key cylinder switch, and L is for the left side, R is for the right side, and B is for the back side (trunk side).

Also, 9 is a bonnet switch, 1O is a sunroof switch, 11 is an ignition (iG) key switch, 12
13A, 13B, and 130 indicate a horn relay, an IG lock relay, and a hazard relay, respectively. The following elements are merely examples, and similar types can be added depending on the type, model, structure, function, etc. of the vehicle.

Each of the above switches can operate as a detection sensor, and the operating state thereof is controlled by the controller 4. The output sensor is not limited to the above-mentioned switches, and sensor means such as a fuel switch, seat load switch, ultrasonic sensor, microwave sensor, etc. can be used as options.

FIG. 2 is a circuit diagram showing the mutual relationship of the p elements in FIG. 1, and the qJr elements are connected to the controller 4 and controlled to perform predetermined operations.

In the above configuration, the ignition key switch 11
After turning on the door lock switch 7 or 7RY linked to the door lock lever with either the left or right door open, each switch 6L can operate as a detection sensor by closing all the doors. ,6R,6
B, 8L, 8R.

8B, 7 L, 7B, 7B, 9.10, etc. can be set to the ready state (Yokota standby state).

If there is an intrusion into the car in this state, for example if the door is forced open, the door switches 6L, 6R,
6B acts as a detection sensor and drives alarm means such as a horn, so people around can be aware of abnormal conditions. The warning means can be a siren, a horn, a hazard, etc., and any means can be adopted depending on the purpose. In addition, if there is an attempt to break into the vehicle through the glass window, an ultrasonic sensor installed inside the vehicle can be operated to detect changes in the interior of the vehicle and activate the alarm means.

Note that when set to the detection standby state as described above,
Since the G key switch is also locked, it is impossible to start the engine even in such a case using the duplicate key 7.

When the driver returns to the vehicle and opens the front door, press door switches 6L, 6R and door lock switches 7, L.
,7. By releasing Rw, the controller section resets the detection sensor. Also, when the driver returns temporarily from the luggage, etc., by releasing switches 6B, 7B, etc. in the trunk on the back side, the controller section temporarily interrupts the detection standby state and locks again. ', the detection standby state is continued. Additionally, the trunk or rear door lock can be configured mechanically without an electrical signal.

Therefore, the purpose of anti-theft can be achieved only by normal vehicle handling operations without requiring additional operations from the 1bT, thereby improving operability.

Effects of the Invention As is clear from the above description, the present invention is equipped with a detection sensor and an alarm means, and closes the door after performing a switching operation in conjunction with the door lock lever when the ignition key is removed and the door is open. Accordingly, the above-mentioned detection sensor is set in an operable state, and when there is an act of intrusion into the interior pressure of the vehicle, the above-mentioned detection sensor is activated and the alarm means is activated, so that the drawbacks of the conventional system can be eliminated. .

[Brief explanation of drawings]

1 and 2 are schematic diagrams and circuit diagrams showing embodiments of the present invention. 4... Controller, 6 L, 6R, 6B... Door switch, 7L, 7B, 7B... Door lock switch, 8L, 8R, 8B... Key cylinder switch, 1
1...Ignition key switch, 12...Pawn. Patent applicant: Toyo Kogyo Co., Ltd.

Claims (1)

[Claims] (1) Equipped with an output sensor and an alarm means 7, a first switch that operates when the ignition key is removed, a second switch that operates when the door is opened, and a door opening that is linked to the door lever. After operating the second and third switches 11 from the third switch that operates in the state, the above-mentioned detection sensor is set to the operable state by closing the door 7 a-r, and the detection sensor is set to the operable state. A vehicle theft prevention device is constructed such that when an intrusion occurs, the detection sensor is operated and the alarm means is activated. (2) The detection sensor is in an operable state. When the rear door is opened with the rear door or the trunk key, the operation is temporarily interrupted by a fourth switch that detects unlocking with the key, and when the rear door is unlocked again, the operation becomes possible. Detection sensor according to scope 1.