CN2233875Y

CN2233875Y - Built-in lock for bicycle

Info

Publication number: CN2233875Y
Application number: CN 95224913
Authority: CN
Inventors: 肖模海
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-10-12
Filing date: 1995-10-12
Publication date: 1996-08-28
Anticipated expiration: 2005-10-12

Abstract

The utility model relates to a built-in lock for bicycles. The utility model is characterized in that a lock body is fixed in the handle tube and the front fork vertical tube of a bicycle, a shifting fork is fixed on a lock core, and a movable lock pin is arranged in the lock body. The lock core is rotated to drive the shifting fork to rotate, the rotation of the shifting fork causes the movement of the lock pin, and the lock pin is used for fixing the front fork and the frame of the bicycle to achieve the purpose of locking. The utility model which has the function that the utility model can not be broken by the destroying methods such as smashing, prizing, punching, etc. has the advantages of large safety factor, high theft-proof performance, etc.

Description

Built-in bicycle lock

The utility model belongs to daily living article, relates to a kind of improvement to bicycle lock.

Present existing bicycle lock all is bright lock, gear lock, chain lock, fork lock etc. are arranged, these locks usually all are that the spoke with bicycle blocks, wheel can not be rotated, reach the purpose of lock car, the deficiency of this class lock is with the unskilled labor prodigiosin lock to be opened, and bicycle has no to damage, so the conservative factor of these locks is low.

The purpose of this utility model provides good, the easy to manufacture built-in bicycle lock of a kind of anti-theft of installing in bicycle rack.

The technical solution of the utility model is that lock body is installed in bicycle front fork top and the handlebar tube bonded assembly vertical tube, be fixed with shift fork on the lock core, rotational lock core, lock core drives shift fork and rotates, shift fork drives lock pin and moves, the handlebar tube of bicycle, car front fork tube and seat tube are processed with the hole that is complementary with lock pin, and the mobile aperture lock pin pinning that car front fork pore and handlebar pore and seat tube are processed of lock fork reaches the purpose of locking car.

Feature of the present utility model is that lock core cylindrical middle part is fixed with shift fork, and movably lock pin is housed on lock body, is connected with spring behind the lock pin, is processed with two grooves on the shift fork, is processed with boss on the lock pin, lock body by screw retention in standpipe of front fork.

Principle of work of the present utility model is that lock body is screwed in handlebar tube and car front fork tube, the place is processed with lockhole at seat tube, rotating lockhole makes lock core drive the shift fork rotation, shift fork rotating band pendulum lock pin moves, lock pin is pressed the certain angle pinning with car front fork and vehicle frame, and front fork can not be rotated, the go-cart walking even bicycle can't be ridden, also front vehicle wheel must be lifted, otherwise can only be by the angle that wheel the stops implementation of turn-taking.

Good effect of the present utility model be since lock body in bicycle front fork, with pound, prize, saw, dash, destruction methods such as cutter all can not open lock, so conservative factor is big, and the utlity model has advantages such as simple in structure, easy for installation, that conservative factor is big.

Fig. 1 is an erection plan of the present utility model;

Fig. 2 is a constructional drawing of the present utility model.

At Fig. 1, lock body 1 is screwed in bicycle handle bar pipe and front fork tube.

In Fig. 2, lock core 3 cylindricals are fixed with shift fork 2, and shift fork 2 is processed with two grooves, and lock pin 6 is contained in the lock body 1, is processed with boss on the lock pin 6, and spring 5 one ends withstand on the lock pin 6, and the other end is positioned in the lock body 1 by gland 4.

Claims

1, a kind of built-in bicycle lock is characterized in that:

A, lock core (3) cylindrical are fixed with shift fork (2);

B, movably lock pin (6) is housed on lock body (1);

C, lock body (1) by screw retention in the bicycle front fork vertical tube.

2, built-in bicycle lock according to claim 1 is characterized in that: be processed with three grooves on the shift fork (2), be processed with boss on the lock pin.