| 摘要 |
A theft safeguarding is serving the purpose of locking a bicycle (1) with a frame part (2) and a handlebars part (4) which is mounted such that it can be turned about an axis in relation to the frame part (2). The theft safeguarding comprises a first and a second safety part (9, 10) which are mounted on the frame part (2) and on the handlebars part (4) respectively, and also a cylinder lock (12) on one of the safety parts (9) to unturnably locking up the second safety part (10) by shooting a lock-pin (18) into a lock hole (20) in said part. On the two safety parts (9, 10) there are furthermore opposite safety faces (22, 23) each of which is situated in a surface of rotation with axis in common with the axis of rotation of the handlebars part (4). On the second safety part (23) is furthermore formed at least one arched curved tongue (24) and on the first safety face (22) there is in relation to this tongue complementarily formed an arched curved groove (25) which is open at both ends, and which can engage with the tongue (24) and prevent that the two safety parts (9, 10) axially are removed from each other. This construction makes an efficient theft safeguarding which cannot be broken up by an unauthorized person who has ordinary tools at his disposal.
|
