초록 ▼

Anti-theft device for nuts/screws of automobile wheels, comprising a barrel (10) rotatably subassembled with a lock cylinder plug (18) the tumblers (24) of which are placed in position by simple insertion of the key (23), which key, however, once inserted and turned, cannot be withdrawn inasmuch as

Anti-theft device for nuts/screws of automobile wheels, comprising a barrel (10) rotatably subassembled with a lock cylinder plug (18) the tumblers (24) of which are placed in position by simple insertion of the key (23), which key, however, once inserted and turned, cannot be withdrawn inasmuch as a projection (28) on the key (23) then lies behind a shoulder (20) on the barrel. This subassembly may be rotatably locked upon the fastener element or removed therefrom using but one hand.

대표청구항 ▼

In a device for preventing theft of automobile wheels having a barrel which extends over a polygonal head of a threaded wheel fastener part, within which barrel there is arranged a lock cylinder plug, the tumblers of which projecting beyond a cylindrical surface of the lock cylinder plug and in an a

In a device for preventing theft of automobile wheels having a barrel which extends over a polygonal head of a threaded wheel fastener part, within which barrel there is arranged a lock cylinder plug, the tumblers of which projecting beyond a cylindrical surface of the lock cylinder plug and in an anti-theft position entering into annular grooves formed in an inner wall of the polygonal head, can be brought by a key into a position in which the tumblers are retracted from the annular grooves, the improvement wherein said tumblers are seated in the lock cylinder plug, said barrel is formed with a bearing opening, key means are provided for positioning said tumblers into said position in which the tumblers are retracted from the annular grooves by insertion into a key slot of said lock cylinder plug, said lock cylinder plug is formed with a collar which is rotatably mounted in the bearing opening of said barrel, a ring substantially closes said bearing opening and forms a shoulder connected to said barrel and disposed in front of and overlapping said collar of said lock cylinder plug, said ring is formed with a radial recess, said key means is formed with a projection which lies in a plane of the key slot when the key is inserted therein, said projection is at most as large as said recess in width and radially outermost extent, said projection is disposed behind said shoulder constituting means for pulling out the ring and the barrel connected thereto from the wheel fastener part by pulling said key means after said key means is inserted into said key slot, passed through said recess with the key slot in a basic position aligned with said recess and turned out of said basic position, and at least one O-ring is disposed on an inner wall of said barrel between and acting against said barrel and said wheel fastener part.