CN2145842Y - Bicycle anti-theft lock - Google Patents

Abstract

The utility model relates to an anti-theft lock for bicycles, comprising a lock body, a lock-tongue, a lock core, etc., wherein, the lock body is latently buried inside a tripod pipe; a lock-tongue hole is arranged in a front fork standpipe, and the lock-tongue and the tripod pipe which are arranged in a parallel way can be telescopic to the front fork standpipe. A key hole is arranged in a wall of the tripod pipe. When a front wheel and a back wheel are not on a same plane surface, the lock-tongue is caused to insert into the lock-tongue hole of the wall of the front fork standpipe so as to lock a bicycle handle bar. The bicycle which is caused to be unable to alter directions is unable to be ridden and pushed. The lock body of the lock is latently buried, and the lock core and the lock-tongue are firm, which are unable to be unclenched. The anti-theft lock for bicycles has a good antitheft performance, which is a novel and ideal anti-theft lock for bicycles.

Description

Bicycle anti-theft lock

The utility model relates to lock a kind of and bicycle formation one.

Numerous bicycle locks is an exposed type, and lock body exposes, and with fixing back (preceding) wheel, makes and can not drive, and reaches antitheft purpose.Say on the whole, this class bicycle lock theftproof performance fragility, sled opens conveniently, and the stolen phenomenon of bicycle takes place repeatedly, leads to " public hazards ".CN90220732.6 disclose Cai Guangcai's " front fork pre-buried type bicycle lock ", be and the distinct a kind of recessive lock of exposed type lock body, be difficult for destroyed, theftproof performance is good, but the lock body of this lock is embedded in the front fork axis hole, and the internal diameter in this hole is less, in the lock body that buries also must be tiny, the collapsing length of dead bolt also is restricted, and firmness is barely satisfactory.

The purpose of this utility model provides a kind of lock body buried for overcoming the deficiencies in the prior art, lock core and dead bolt firm, can't prize open, bicycle lock that theftproof performance is good.

The purpose of this utility model can realize by following measure: it is made up of lock body, lock core, dead bolt etc. equally, its unusual part is that lock body is buried in the tripod pipe of bicycle, can be to vertical tube of front fork flexible dead bolt and the parallel installation of tripod pipe, dead bolt hole is opened on vertical tube of front fork, and keyhole is opened on the tripod tube wall.

The also available following measure of the utility model is perfect: lock core the inner is coaxial with it and a be fixed as one gear, and the tooth of this gear is meshed with the tooth of dead bolt inboard.

Drawing of the present utility model is described as follows:

Accompanying drawing is the utility model structural representation.

The utility model is described in detail below in conjunction with embodiment: lock body 5 is fit to do into the garden cylindricality, and the about 2cm of its diameter and length is for well, excessive difficulty in the pipe, the too small intensity that influences filled in.Inclined tube was near vertical tube of front fork 1 place before the tripod pipe 4 of buried lock body 5 should be selected for use, and to avoid a core screw mandrel, lock body 5 glues together with the available screw of combining of tripod 4 or with seccotine.The inner of lock core 6 can make gear 8(or half age wheel also can), the tooth of its tooth and dead bolt 3 inboards meshes, keyhole is opened on tripod 4 tube walls, has dead bolt hole 2 on the vertical tube of front fork wall 1.Key 7 inserts in the keyhole, clockwise direction turn lock core 6, making the tooth on top stir dead bolt 3 inserts and hundle-bar can not be turned to the dead bolt hole 2 of vertical tube of front fork, reach the purpose of locking, if with 6 dead bolts of key 7 counter-clockwise direction turn lock cores, 3 retractions, hundle-bar activity again just can drive freely.For making the locked hand effect better, the location of dead bolt hole 2 should consider that front-wheel and trailing wheel are not locked as when a plane.Because,, can on straight way, push away away though bicycle can not drive if front-wheel and trailing wheel lock when a plane, when a plane, do not lock, bicycle also only can spin in the original place when then boosting, and can not advance.

Forward fork shaft one end has a baffle ring in the tripod pipe of the bicycle that has, and influences lock body 5 and imbeds in the pipe, and prior available universal joint milling cutter mills this baffle ring.

The structure of dead bolt 3 and lock core 6 and fit system are not necessarily selected this gear of present embodiment, ratch structure for use, can extensively adopt life to implement with the structure of locking, and this is that the those of ordinary skill of lockmaking industry is familiar with, and does not give unnecessary details for this reason.

This lock also can be applied in the vehicles such as tricycle, motorcycle.

The advantages such as it is buried that the utility model has lock body compared to existing technology, and lock core and dead bolt are firm, can't prize and open, and theftproof performance is good.

Claims (2)

1, a kind of anti-theft lock for bicycle, form by lock body (5), dead bolt (3), lock core (6) etc., it is characterized in that said lock body (5) is buried in the tripod pipe (4) of bicycle, can open on vertical tube of front fork wall (1) with the parallel installation of tripod pipe, dead bolt hole (2) to the flexible dead bolt (3) of vertical tube of front fork (1), keyhole is opened on tripod pipe (4) wall.

2, bicycle lock as claimed in claim 1, the inner that it is characterized in that lock core (6) are coaxial with it and a be fixed as one gear (8), and the tooth of this gear is meshed with the tooth of dead bolt (3) inboard.

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