CN2316220Y - Anti-theft safety lock for bicycle - Google Patents

Abstract

The utility model discloses an anti-theft safety lock for bicycles, which comprises a lock core, a lock tongue, lock casings which are respectively fixed on a lower pipe of a bicycle frame and a front pipe and a plate of a lock hole is fixed on a front fork frame. After a bicycle tap is locked, the bicycle tap is clamped in an angle and can not rotate from left to right to achieve anti-theft safety effect that a bicycle can not be freely pushed for travel; the lock casings and the plate of a lock hole are welded on a bicycle frame and can not be dismounted with safety.

Description

A kind of bicycle theft-prevention safety lock

The utility model relates to a kind of bicycle theft-prevention safety device.

Before the utility model was made, the anti-theft safety lock that prior art is made was mainly made innovation on reinforcing lock dead bolt and lock core structure.And anti-theft safety lock is still locking bicycle rear wheel circle, steals with pick-proof.Though such safety lock is more firm than common iron sheet lock, the habitual little cleek that hangs on the waist-belt of the auto theft person rear wheel of slinging slightly still can rotate handlebar flexibly and comfortably, go-cart and walking.Therefore, though a large amount of safety lock listing does not reduce the car owner yet by the worry of auto theft.

The purpose of this utility model is to provide a kind of and handle-bar can be locked in a position, and the left and right directions of must not make it rotates, with the anti-theft safety lock that prevents that bicycle from arbitrarily being carried out.

The technical solution of the utility model is, this anti-theft safety lock comprises lock core, dead bolt, also comprises being fixed on the lock housing on the pipe and down tube before the vehicle frame and being fixed on selvage on the front truck crotch.3 waist shape lockholes of design on the selvage, a dead bolt pipe is equipped with in the lock housing bottom, and dead bolt is by in the waist shape lockhole on the dead bolt pipe insertion selvage.

The utility model advantage is, because handlebar is locked in a position by anti-theft safety lock, can not left-right rotation, and reached the theft protection effect that bicycle can not arbitrarily be carried out, and lock housing and selvage be welded on the vehicle frame, can not demolition, safe and reliable.

Fig. 1 is that the utility model is installed in the scheme drawing on the bicycle rack.

Fig. 2 is the front elevational schematic of selvage of the present utility model.

Fig. 3 is the utility model lock core, dead bolt part scheme drawing.

Below in conjunction with accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and embodiment are further described the utility model.

The inventor is a shell with steel pipe, and the liner copper sheathing is made into lock housing 1, and lock housing 1 is managed on 8 before being welded on down tube 7 and vehicle frame, lock housing 1 bottom welding dead bolt pipe 6.Lock core 2 still adopts blade construction, makes of E-metal.Lock core 2 one ends have the car key hole of slotting car key, and the other end is equipped with Xiao Zi 3.Dead bolt 4 is that little garden steel is done, and plating zinc on surface is handled, end mill one groove on the dead bolt 4.Selvage 5 is also made of steel plate, mills 3 waist shape lockholes on the plate, about two lockholes and center lockhole be 30 ° of angles, selvage 5 is welded on the front truck crotch 9.

When car key rotates, drive lock core 2 and rotate, the Xiao Zi 3 of lock core 2 just drives dead bolt 4 and moves up and down, and dead bolt 4 inserts the selvage 5 that is welded on the front truck crotch 9 by being welded in the dead bolt pipe 6 of lock housing 1 bottom.At this moment, handle-bar just firmly is locked in a position.When using the utility model, generally dead bolt 4 is inserted in the waist shape lockhole that selvages and center be the left side at 30 ° of angles or the right side, after handle-bar was locked, handlebar was stuck in a position by 30 ° of angles of askew mistake, must not left-right rotation.Therefore, bicycle can't arbitrarily be pushed away away.

Claims (3)

1. bicycle theft-prevention safety lock, it comprises lock core, dead bolt, it is characterized in that, it also comprises and is fixed on the lock housing on the pipe and down tube before the vehicle frame and is fixed on selvage on the front truck crotch.

2. anti-theft safety lock as claimed in claim 1 is characterized in that, design has 3 waist shape lockholes at an angle on the selvage.

3. anti-theft safety lock as claimed in claim 1 is characterized in that, a dead bolt pipe is equipped with in the lock housing bottom.

Images