| 摘要 |
<p>A linkage anti-theft lock head, comprising a lock tube (16, 104), a lock core (2, 103), a brake bar (19, 127), a front tumbler (6, 108) with its return spring (20, 117), a rear tumbler (9) with its return spring and a key (1, 101). Clearance fits are provided between the front tumbler (6, 108) and the rear tumbler (9, 105) and the tumbler holes (26) distributed axially on the lock core (2, 103). The brake bar (19, 127) is mounted axially along the lock core (2, 103) thereof, brake teeth (8) of the brake bar (19, 127) engage with the tooth grooves (121) of the front tumbler and the rear tumbler. A mobile cam device is formed with the front tumbler (6, 108) and the rear tumbler (9) acting as moving cams set oppositely, the brake bar (19, 127) acting as a driven member and the lock core (2, 103) acting as a rack. The brake teeth (8) of the tooth grooves (121) of the front tumbler (6, 108) and the rear tumbler (9) are engaged to form a linkage engagement, and a brake groove (139) is formed on the lock tube (6, 104) to engage with the brake bar (19, 127).</p> |
