CN2142873Y

CN2142873Y - Anti-theft lock for bicycle

Info

Publication number: CN2142873Y
Application number: CN 92237686
Authority: CN
Inventors: 陈宪明; 涂元晞
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-16
Filing date: 1992-11-16
Publication date: 1993-09-29
Anticipated expiration: 2002-11-16

Abstract

The utility model relates to an anti-theft lock for a bicycle. A hand turning on an annular lock tongue is extended from the inner circle side thereof in a connection way, accordingly a hand turning moving slot seam is arranged on the inner flange side of a lock case, in the lock case, a lock tongue buckle mechanism formed by the lock core body, a bayonet pin, and a groove at the relevant position of the annular lock tongue is coated and covered by a groove-shaped guard plate, and the lock core body and the lock tongue buckle mechanism can not be contacted even if the lock case is forcibly prized. The utility model has double safety functions, and the anti-theft performance is increased.

Description

Anti-theft lock for bicycle

The utility model relates to a kind of bicycle lock.

It all is to move in the line of rabbet joint of lock housing outer edge side that traditional bicycle lock, the hand on its ring-shaped lock dead bolt are turned round, and dead bolt deduction structure also is positioned at homonymy, therefore very easily utilizes this line of rabbet joint sled tongue button that undoes the lock to make its disengaging, and theftproof performance is poor.

The purpose of this utility model is exactly in order to address the above problem, and a kind of anti-theft lock for bicycle is provided.

Technical solution of the present utility model:

A kind of anti-theft lock for bicycle, it includes lock housing 1, ring-shaped lock dead bolt 2 and lock core body 3, it is characterized in that hand on the ring-shaped lock dead bolt 2 turn round 4 from its in the garden side connect and stretch out, correspondingly hand is turned round the motion line of rabbet joint 5 and is also opened on the inner edge side of lock housing 1, in lock housing 1, the dead bolt deduction structure that the groove of lock core body 3 and termination bayonet lock thereof and ring-shaped lock dead bolt 2 relevant positions constitutes is flute profile backplate 6 bags and covers admittedly, also can't be touched lock core body 3 and dead bolt deduction structure even feasible lock housing 1 pries open by force.

The utility model is torqued into hand the inner edge side of lock housing; and in lock housing, lock core body and dead bolt deduction structure bag are lived admittedly with the flute profile metal sheet; the utility model had both kept the mode of operation and the dead bolt button form of traditional lock like this; the movable line of rabbet joint that simultaneously hand is turned round can not be utilized to picking lock; even pry open lock housing by force, because of the protection of trough slab, still can not touch dead bolt deduction structure again; have the safeguard function of double insurance, theftproof performance improves greatly.

Fig. 1 is a profile schematic diagram of the present utility model;

Fig. 2 is a partial cutaway diagrammatic sketch of the present utility model;

Fig. 3 is the A-A profile of Fig. 2.

As Fig. 1,2, the outer edge side of the utility model lock housing 1 is an enclosed construction, and its inner rim side has hand and turns round the motion line of rabbet joint 5, turns round 2 motions of 4 drive ring-shaped lock dead bolts so that pull hand.Flute profile backplate 6 is preferably metal casing, and as Fig. 2,3, it is positioned at lock housing 1, and its notch two sides is with lock core body 3 and dead bolt deduction structure capping position.Like this, the hand of lock housing 1 inner edge side is turned round the motion line of rabbet joint 5 and just is not easy to prize very much to open, even pry open by force, because the protective effect of flute profile backplate 6 still can not touch lock core body 3 and dead bolt deduction structure, the safe antitheft performance is increased greatly.

Claims

1, a kind of anti-theft lock for bicycle, it includes lock housing 1, ring-shaped lock dead bolt 2 and lock core body 3, it is characterized in that hand on the ring-shaped lock dead bolt 2 turn round 4 from its in the garden side connect and stretch out, correspondingly hand is turned round the motion line of rabbet joint 5 and is also opened on the inner edge side of lock housing 1, in lock housing 1, the dead bolt deduction structure that the groove of lock core body 3 and termination bayonet lock thereof and ring-shaped lock dead bolt 2 relevant positions constitutes is flute profile backplate 6 bags and covers admittedly, also can't be touched lock core body 3 and dead bolt deduction structure even feasible lock housing 1 pries open by force.

2, by the described anti-theft lock for bicycle of claim 1, it is characterized in that flute profile backplate 6 is preferably metal casing.