| 摘要 |
PURPOSE: A door switch apparatus for preventing theft is provided to alarm in opening a door without a normal key by detecting rotation of a rotor with installing a switch around a rotor case, and to simplify the structure by reducing the length of the locking apparatus. CONSTITUTION: An antitheft door switch device is composed of a rotor case(50) having a switch hole(50a); a rotor(60) inserted to the rotor case to lock and unlock a door by turning with arranging a lock plate(63) in inserting a key of a vehicle; and a switch unit(80) mounted around the rotor case, and contacted to the circumference of the rotor and a cam surface(65) to detect the rotation of the rotor. The cam surface is formed in the switch hole of the rotor case. The alarm is set and released with turning on and off the switch by turning the key. The rotational state of the rotor is detected with forming the switch unit around the rotor case, and the switch structure is simplified with reducing the length of the locking unit.
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