Improved electric anti-theft device, especially for a motor vehicle

摘要

The electrical anti-theft system (10) includes an anti-theft switch (12) for controlling the engine starting circuits (DEM), and controlling the supply to other electrical circuits (ACC, ALL). A key-operated switch (14) is provided to detect the simulation of the introduction of a key, and a motorised locking device (34) is incorporated in the circuit. The key operated switch (14) includes a mobile contact (42) connected to the supply (+BAT), and able to cooperate with a first fixed contact (44) connected to the motor (34) in the absence of the key. Via a switch (82) which detects the locking of the anti-theft system this mobile contact, this mobile contact is connected to a second fixed contact (46) which is connected to the motor.