| 摘要 |
1,228,449. Vehicle anti-theft device; locks. NISSAN JIDOSHA K.K. 13 Sept., 1968 [23 Sept., 1967; 5 April, 1968], No. 43581/68. Heading B7J. [Also in Divisions E2 and G4] A key-operated steering lock for a vehicle has an associated alarm circuit such that the opening of a vehicle door with the steering not locked, operates an alarm. In Fig. 4, a steering shaft 15 has a sleeve 17 welded on it with a slot 16. A locking bolt 10, engages with this slot by means of a key 56 operating a key cylinder 24 ganged with rotor 44. This rotor is contained within a hollow slider 28 (Fig. 7) and is associated with an engine switch 1. Rotor 44 has a diametric groove 50 along which slides a plunger 49 and a stop 53. Rotation of the rotor moves the slider up and down, at the stop position, the slider being acted on by the peripheral edge of the shoulder of the rotor, hence forcing spring 27 into compression. The slider is held by the key tip 58 engaging with stop 53 and when the key is removed the locking bolt 10 is urged by the spring into the slot 16. Alarm switch 4 is operated by a ball 11 which opens the switch when the ball engages recess 10a of the locking bolt. A further switch 3 (Fig. 3, not shown) closes upon the opening of a car door, thus completing the alarm circuit if the engine and alarm switches are both already closed. Engine switch 48 controls the ignition and start circuits whilst also determining the key positions at which an alarm can be sounded. The alarm may operate only in the garage or stop positions or, Fig. 15 (not shown), in all key positions. |
