CN2331742Y - Anti-theft lock for bicycle - Google Patents

Abstract

The utility model relates to a theft proof lock for a bicycle, which is composed of main body and an auxiliary lock body, wherein, the main lock body is fixed to one fork foot of two fork feet of a bicycle through a press plate and hexagon socket head cap screws, and the main lock body is provided with a key and a cylindrical lock tongue; the auxiliary lock body is fixed to a shaft of a front wheel and is synchronously rotated with the front wheel; the cylindrical lock tongue on the main lock body can be extended into a hole on a chuck of the auxiliary lock body through the key, and the purpose of locking the bicycle can be achieved. The utility model has the advantages that as the main lock body is arranged on the front fork foot of the bicycle through the hexagon socket head cap screws, the auxiliary lock body is fixed to the shaft of the front wheel, when the bicycle is locked, the invisibility is good, the lock can not be pried off by tools, and the safety is high.

Description

Anti-theft lock for bicycle

A kind of anti-theft lock for bicycle belongs to transportation and vehicular field.

Common bicycle lock has two kinds, a kind of is that an annular cassette lock is installed on the vehicle frame below the rear wheel seat cushion, another kind is on a fork arm of two front fork stems of front vehicle wheel, install one and can stretch out the lock of dead bolt to the front vehicle wheel spoke, the former is pried open easily, and the latter puts in to reach in the front vehicle wheel spoke with a very long post strip dead bolt and stops front vehicle wheel to rotate purpose, but unblanks will pull dead bolt to vertical and level with hand with shutting all, use inconvenience, and still stolen easily.

The purpose of this utility model provides on the car front fork pin that a kind of main lock body is installed in bicycle, auxiliary lock body is installed on the front vehicle wheel sky core, and the autonomous lock body of dead bolt puts in the anti-theft lock for bicycle in the auxiliary lock body chuck.

Scheme of the present utility model is to be made of main lock body and auxiliary lock body, main lock body is packed on the fork pin of two front fork pin of bicycle with pressing plate, hexagon socket head cap screw, key, cylinder shape lock tongue are arranged on the main lock body, auxiliary lock body is installed on the sky core of front vehicle wheel, rotate synchronously with front vehicle wheel, cylinder shape lock tongue on the main lock body can put in key in the hole on the chuck of auxiliary lock body, reaches lock car purpose.

The utility model has the advantages that because main lock body is to be packed on the car front fork pin with hexagon socket head cap screw, auxiliary lock body is packed on the sky core of front vehicle wheel, good concealment behind the lock car is even also be difficult to pry open with instrument, so safety is good.

The utility model has following accompanying drawing, and accompanying drawing is briefly explained.

Accompanying drawing 1 is a front view of the present utility model.

Accompanying drawing 2 is auxiliary lock body front view and partial sectional view.

Accompanying drawing 3 is vertical views of accompanying drawing 2.

Accompanying drawing 4 is left side views of accompanying drawing 2.

Below in conjunction with accompanying drawing architectural feature of the present utility model is described further.

See also Fig. 1, front vehicle wheel tire 13, steel ring 14, front truck right fork pin 22 and spoke 15 are arranged among the figure, main lock body 1 usefulness pressing plate 2 and two hexagon socket head cap screws 3 are fixed tightly in car front fork pin 22, envelope is filled out with capping 4 in the top of hexagon socket head cap screw 3, make and cannot see bolt position, key 6, mortise pin 8, spring 5 and cylinder shape lock tongue 9 are arranged on the main lock body 1, dead bolt 9 puts in the circular hole of chuck 24 of auxiliary lock body 11 during locking shown in the figure, when unblanking, dead bolt 9 is withdrawn in the main lock body 1 automatically; Auxiliary lock body shown in the figure 11 is packed on the sky core 20 of front vehicle wheel, on the chuck 23 (24) that core 20 usefulness bearings in front vehicle wheel sky are installed on day mandrel 21 and auxiliary lock body 11 is connected as a single entity several circular holes 18 is arranged; It on the accompanying drawing 2 front view of auxiliary lock body 11, auxiliary lock body 11 is by a upper chuck 24 that has upper blocking seat body 16 and be connected as a single entity with the upper blocking seat body among the figure, deck body 17 and constitute under the having of another and its symmetry with lower chuck 23 that following deck body 17 is connected as a single entity, on, after following deck body covers, formation one has the cylinder of centre bore 19, the internal diameter of circular hole 19 is greater than the outside diameter of bicycle front-wheel sky core 20, on, lower chuck 24,23 periphery has several circular holes 18 symmetrically, the internal diameter of circular hole 18 is greater than the outside diameter of dead bolt 9, on, following deck body 16, have screw and screw thread on 17, be fastened at front vehicle wheel sky core 20 with interior corner bolt 12.

Main lock body 1 and auxiliary lock body 11 are fixed tightly on the car front fork pin 22, front vehicle wheel sky core 20 of bicycle with hexagon socket head cap screw 3,12 respectively, fill out envelope at the top of bolt 3,12 with capping 4, make and cannot see bolt position.

Claims (2)

1, a kind of anti-theft lock for bicycle, constitute by main lock body (1) and auxiliary lock body (11), it is characterized in that, main lock body (1) is packed on the fork pin (22) of two front fork pin of bicycle with pressing plate (2), hexagon socket head cap screw (3), key (6), cylinder shape lock tongue (9) are arranged on the main lock body (1), auxiliary lock body (11) is packed on the sky core (20) of front vehicle wheel, rotate synchronously with front vehicle wheel, cylinder shape lock tongue (9) on the main lock body (1) can put in the chuck (23) of auxiliary lock body (11), the hole (18) on (24) with key (6).

2, by the described anti-theft lock for bicycle of claim 1, it is characterized in that, auxiliary lock body (11) is by a upper chuck (24) that has upper blocking seat body (16) and be connected as a single entity with the upper blocking seat body, deck body (17) and constitute under the having of another and its symmetry with lower chuck (23) that following deck body (17) is connected as a single entity, on, after following deck body covers, formation one has the cylinder of centre bore (19), the internal diameter of circular hole (19) is greater than the outside diameter of bicycle front-wheel sky core (20), on, lower chuck (24), (23) periphery has several circular holes (18) symmetrically, the internal diameter of circular hole (18) is greater than the outside diameter of dead bolt (9), on, following deck body (16), (17) have screw and screw thread on, be fastened at front vehicle wheel sky core (20) with interior corner bolt (12).

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