The anti-theft system, a lock with a safe of second rank, when the anti-theft device is force by a thief

摘要

The present invention relates to an anti-theft device provided with a lock. It comprises at least one detector of the torque which is actuated when the torque on the barrel of the lock or / and on the steering wheel is abnormally high, this torque detector actuates a safety of second rank, in the respect of the ratios of force defined. It is constituted by a switch (5), of a key (6), of a cylinder (12), the pins (17) of a cylinder (12). The said cylinder (12) rotates so that its projection of the cam (12a) acts on the end of the finger (15) for locking the steering wheel (2), the said finger (15) is expelled from its housing (3a) by tangential when the flywheel (2) is stressed, which actuates a safety of second rank. The core (11) is integral with the body (8) of the contactor (5) thanks to the wire (10) which is securely in the body (8) by the segment (10a), then passes to the core (11) by the segment (10c) and finally leaves by the segment (10b). Before the said pins (17) does not break due to an abnormally high torque exerted by the thief on the cylinder (12), the wire (10) is sheared, which actuates another safety of second rank. The antitheft lock according to the invention is particularly intended to equip motor vehicles such as cars, lorries, motorcycles, scooters, boats..