JPS6320251A - Burglar alarm control device for automobile - Google Patents

Abstract

PURPOSE:To reduce a shock noise, by furnishing a converting relay between the sensitivity control switch of a shock absorber control unit and a burglar alarm device, and converting the relay to prepare a defending condition to perceive a shock while a high sensitivity adjustment is made. CONSTITUTION:The loading condition to a shock absorber control unit 19 can be converted freely to a high, medium, and low levels by a manual selection switch 21, and when it is at the medium or the low, the second relay 23 is at the normally closed position NC, and a burglar alarm control device 18 is off. When the unit 19 is converted to the high position in a parking or the like, and the shock signal from the shock absorber 20 is input, the second relay 23 is converted to the normally opened position NO, the burglar alarm device 18 is on, and a defending condition is prepared. Therefore, the burglar alarm control device 18 is off in the running condition or the like, to prevent the running shock from making the error operation of the alarm, while the burglar alarm control device 18 is secured to operate accurately at a parking or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automobile theft alarm control device that activates an alarm by detecting vibrations and shocks from a vibration sensor or an impact sensor when preventing theft of an automobile. It is.

Conventional Technology This type of control device that activates an alarm by the vibration or impact force generated when a car is stolen is disclosed in, for example, Japanese Patent Application Laid-open No. 57-37048 and Japanese Patent Publication No. 52-3531.
7. Utility Model Application Publication No. 50-133160 has already been published, which detects vibrations and shocks when a car is illegally stolen, and at the same time emits a loud alarm to prevent the theft. be.

In addition, to prevent tire theft, vibration sensors and tilt sensors are installed on the shock absorbers installed on the vehicle body.
There is also a device that sounds an alarm when the vehicle is jacked up.

Problems to be Solved by the Invention Although a shock absorber is equipped with a so-called detection sensor that detects vibration and inclination, it is difficult to use on mountain roads with poor road surfaces.
The drawback is that the vibration is so strong that the vibration sensor activates and sounds an alarm.

Means for Solving the Problems The purpose of the present invention is to eliminate such drawbacks by lowering the sensitivity by operating a selection switch located near the driver's seat when the road surface is uneven, and by lowering the sensitivity when the road surface is uneven. At the operating position of the selection switch, which is adjusted according to the load applied to the shock absorber, the first relay is activated by the output signal from the theft alarm control device that is output in the event of theft. The purpose is to put it in a defensive state when it is closed.

The state of the load applied to the action shock absorber is appropriately selected by manual operation of the selection switch, and the selection switch has three sensitivity positions, divided into high, medium, and low. The second relay connected to the terminal of the selection switch is always closed, and if you switch the selection switch to the high-sensitivity position when parking, the theft alarm control device connected to the alarm or warning light will be activated. Since an output signal is generated at the time of theft, the second relay that receives this output signal switches from a normally closed state to an open state and enters a defensive state. The first relay supplies power when the key is not closing the ACC switch, for example when the key is removed.

Example An embodiment of the present invention will be described below with reference to the drawings.

The figure is an electrical block diagram showing electrical connection paths of the present invention.

The ACC switch 1 connected to the power supply B is in the open state when the key (not shown) is removed from the steering lock (not shown), and the normally closed contact NC connected to the power supply B is in the open state. The first relay 22 having a contact NO is switched to an open contact NO to supply power B when the ACC switch 1 is open, and the shock absorber control unit 19 is connected to the normally closed contact NC of the first relay 22. , the theft alarm control device 18 is connected to the normally open contact NO of the first relay 22. This theft alarm control device 18 is connected to the ACC switch 1 and the normally open contact No. of the second relay 23, and the normally closed contact No.
C is connected to the shock absorber control unit 19, and a selection switch 2 is manually operated to the normally closed contact NC of the second loop 23 and adjusts the sensitivity as appropriate.
Connect to the terminal 21' of No.1.

This selection switch 21 selects the sensitivity level from low S to medium M to high H.
A shock absorber control unit 19 is connected to each terminal wire, and a shock absorber 20 is connected to the shock absorber control unit 19 for reducing vibrations and the like applied to the vehicle body. . In addition, the power supply B is connected to the ACC switch 1, the first relay 22, the second relay 23, and the selection switch 21.
and a theft alarm control device 18, and an alarm and a warning light (not shown) are connected to the theft alarm control device 18, respectively. 24 is a movable needle for switching the selection switch 21.

Effects of the Invention As described above, the present invention selects the state of the load applied to the shock absorber using the selection switch, and when the selection switch is in the high sensitivity alarm preparation state, the second relay is activated by the output of the theft alarm control device. Since the device is switched to the defensive state, it has the effect of providing excellent anti-theft performance.

[Brief explanation of the drawing]

The figure shows one embodiment of the present invention, and represents a block diagram of an electrical system. B...Power supply, 1...ACC switch, 18...Theft alarm control device, 19...Shock absorber control unit, 20...Shock absorber, 21
...Selection switch, 22...First relay, 23...
・Second relay.

Claims (1)

[Claims] In a car theft alarm control device having a theft alarm control device configured to detect the state of the load applied to the shock absorber and generate an alarm, there is provided a shock absorber control unit that controls the load applied to the shock absorber, and the shock absorber control unit. A selection switch connected to the unit and capable of appropriately adjusting the sensitivity, and a second relay connected between the selection switch and the theft alarm control device and closed by the output from the theft alarm control device are provided. A theft alarm control device for an automobile, which is characterized by being able to adjust according to the load and set an alarm preparation state.