| 摘要 |
PURPOSE:To simply and surely check the invasion of a thief and preventing the theft in an automobile by expanding an expansive body instantly in the interior space on the basis of a detection signal sent from a door sensor and a window sensor, when a car thief destroys a door lock and a window glass to invade the automobile. CONSTITUTION:The turning on and off of an ignition switch in an automobile are detected by an ignition sensor 1. Whether persons are in the interior space or not is detected by a person sensor 2, and the opened or closed state of a door is detected by a door sensor 3, and the destruction of a window glass is detected by a window sensor 4. On the other hand, a bag-shaped expansive body 8 is provided in the interior space, and a driving device 7 and a gas supply device 8 for expanding the expansive body 8 are provided there. The driving device 7 is controlled on each detection signal issued from each of sensors 1 to 4 according to the turning on and off of a primary switch 5 by a controller 6. Namely, when a car thief destroys a door lock and the window glass and invades the automobile the expansive body 8 is expanded in the interior space to check the invasion of the thief. |
