CN2476478Y

CN2476478Y - Auti-theft lock for bicycle

Info

Publication number: CN2476478Y
Application number: CN 01240430
Authority: CN
Inventors: 张五四
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-05-21
Filing date: 2001-05-21
Publication date: 2002-02-13
Anticipated expiration: 2011-05-21

Abstract

The utility model relates to an anti-theft lock for bicycle; a vertical bar 1 of a front fork for bicycle penetrates in a shell 2 of the lock; a bolt 6 corresponds to a locked groove 5 on the vertical bar; the shell is fixed with an inclined beam 4; the shell has a complete close structure with only a tapered end exposed.

Description

Anti-theft lock for bicycle

The utility model relates to a kind of anti-theft lock for bicycle.

Because the stolen phenomenon of bicycle occurs repeatedly, various anti-theft column locks also use and give birth to, wherein be no lack of the product that has the high-tech means utilized to produce, major part all structure is very complicated, and technology is loaded down with trivial details, manufacturing is difficult, cost is higher, fetch long price, weight are heavier.Also have some anti-theft column locks to separate with bicycle, lock Che Shicai usefulness, certain position of bicycle also will not carried or be locked in to the time spent, and special trouble is brought a lot of inconvenience to the user.And these locks mostly are easy to be pried open or are destroyed, and theftproof performance is poor, do not have the effect that guarantees bicycle safe equally.

The purpose of this utility model is exactly the defective that exists in the above-mentioned background technology in order to solve, and a kind of simple in structure but anti-theft lock for bicycle that theftproof performance is good is provided.

To achieve these goals, the utility model proposes correspondingly technical solution:

It mainly is the vertical rod that penetrates bicycle front fork in housing for this anti-theft lock for bicycle, and dead bolt is corresponding with the locked groove of vertical rod.The bottom and the cant beam of housing one side are fixed.Housing is for only exposing the full-closed structure of tapered end.

Fig. 1: structure of the present utility model and installation site scheme drawing.

The A-A cutaway view of Fig. 2: Fig. 1.

The B-B cutaway view of Fig. 3: Fig. 1.

Now reach embodiment in conjunction with the accompanying drawings the utility model is done an explanation.

As shown in Figure 1 and Figure 2, the housing 2 in the utility model is a full-closed structure that exposes tapered end 3, adopts the punching type burst to be welded with sheet steel, on the surface without any screw or slit.A common drawer lock is put into and is fixed on housing 2 by inner bolt from capping 8, and the tapered end 3 that wherein has key hole is exposed to a side of housing 2, and keeps at grade with housing 2.The vertical rod 1 of bicycle front fork has a locked groove 5 (referring to Fig. 3), and this vertical rod 1 is penetrated in the housing 2, makes the dead bolt 6 that is positioned at lock body 7 corresponding with this locked groove 5.The bottom on housing 2 one side and/or side are direct and cant beam 4 welding are fixing, and the overcoat 9 of the upper and lower plane of housing 2 and vertical rod fixes (referring to Fig. 3).Capping 8 is with the end sealing of housing 2.

This anti-theft column lock is fixedly mounted on the car body, because vertical rod 1 penetrates housing 2, so the vertical rod 1 of front fork can freely be rotated in the same old way, does not influence normally at all and rides.When riding or promote bicycle, locked groove 5 in the vertical rod 1 and dead bolt 6 dislocation; When needs lock car, as long as headstock is turned to a side, this moment, locked groove 5 was just in time aimed at dead bolt 6, by turning key, dead bolt 6 can be inserted in the locked groove 5, reached the purpose of lock car.At this moment if will ride or promote, bicycle can only be turn-taked in the original place, can not straight-line travelling.

The utility model is simple in structure, making is easy, cost is lower, and it mainly is that pick-proof, preventing destructing performance are fairly good, even tapered end is destroyed this lock of also not opening.If capping is removed, also can't make dead bolt break away from locked groove, have only with the key of this lock and just can open.As key loss, have only handlebar is laid down, with in the instrument insertion vertical rod dead bolt withdrawal could being opened by lock.Because housing is full-closed structure, appearance does not more have screw and connects without any the place that can prize, and joyriding is to have no way of doing it to this lock, so can realize the purpose that prevents that bicycle is stolen.

Claims

1, a kind of anti-theft lock for bicycle is characterized in that penetrating in the housing (2) of this lock the vertical rod (1) of bicycle front fork, and dead bolt (6) is corresponding with the locked groove (5) of vertical rod (1).

2, anti-theft column lock as claimed in claim 1 is characterized in that the bottom of housing (2) one sides and cant beam (4) are fixing.

3, anti-theft column lock as claimed in claim 1 or 2 is characterized in that housing (2) is for only exposing the full-closed structure of tapered end (3).

4, anti-theft column lock as claimed in claim 1 is characterized in that the last lower plane of housing (2) and overcoat (9) are fixing.