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    • 28. 发明专利
    • Anti-theft device for a vehicle
    • JP3641289B2
    • 2005-04-20
    • JP5300495
    • 1995-03-13
    • 富士通テン株式会社
    • 哲 春本
    • B60R25/10B60C23/02B60R25/30B60R25/32B60R25/34G08B3/10G08B13/00
    • PURPOSE: To prevent a burglary securely, by detecting the air pressure of the wheels of a vehicle by an air pressure sensor, and generating an alarm signal when the air pressure is made less than a preset value in the parking condition, responding to the output of the air pressure sensor, and the output of a parking condition detecting means. CONSTITUTION: Wheels 1 are installed by connecting the tires 30 to form the air chambers 29 closely to a rim 28, the rim 28 forms a passage 31 communicating to the air chambers 29, and an air passage 33 is formed to an axle 32. The passage 33 is led to an air pressure sensor 37 through a passage 36, and the air pressure sensor 37 detects the air pressure of the air chambers 29 of the wheels 1. When the air pressure is made less than a preset value in the parking condition, an alarm signal is generated, responding to the output of the air pressure sensor 37, and the output of the air pressure sensor 37 in the parking condition stored in a memory. Consequently, a burglary such as lifting up by a wrecker, or lifting up by inclining from the parking condition, can be prevented securely.