CN2078724U

CN2078724U - Theft-proof bicycle

Info

Publication number: CN2078724U
Application number: CN 90216412
Authority: CN
Inventors: 谢志勇; 曾忠宁; 褚志刚
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-07-10
Filing date: 1990-07-10
Publication date: 1991-06-12

Abstract

The utility model belongs to a theftproof bicycle which is in large bent beam female type. The theftproof organization of the utility model comprises a clamp opening 1 fixed on a front fork standpipe, a movable control rod 4 which is controlled by a spring lock, and the spring lock; the movable control rod 4 can inserts and moves from the clamp opening 1. The fixing device of the theftproof organization of the utility model causes the theftproof organization to arranged on the connecting part of a tripod headstock bicycle sleeve tube; the fixing device of the theftproof organization of the utility model comprises a protecting cover 5 which is provided with a clamp opening 10 and an elastic clamp block 9 arranged on the theftproof organization. The utility model has stronger theftproof function than any antitheft devices with safety.

Description

Anti-theft bicycle

The utility model is about the anti-big curved lady's bicycle of stealing of shouldering of a kind of energy.

At present, bicycle itself can not prevent to steal.All needing to mix a lock to it behind user's buying car prevents stealing.And general lock is all made with iron sheet, is pried open than being easier to, even the lock that is not easy to pry open is arranged, after the robber also can shoulder away bicycle, lock is cut or severs and unloads, change new lock then, so the antitheft problem of bicycle does not also obtain solving fairly perfectly.And the utility model has solved this problem, and its great advantage can not be pried open or unload, and makes steathily that the car activity becomes very difficult,

The purpose of this utility model just provides a kind of bicycle that self has anti-theft capability, and its anti-theft capability is all stronger than other anti-joyride device, and is all safe and reliable.

If we block the headstock of bicycle and can not rotate by it on certain angle, this car just can't use so, but also can't push away away, as shown in drawings, anti-theft bicycle of the present utility model has changed conventional practice, big curved shouldering with the handing-over position of headstock sleeve pipe at spider installed an antitheft office, it is fixed on the bayonet socket on the vertical tube 1 on the front fork by one, movable control rod 4, control stalk sheath 2, spring 3 and a corresponding spring lock are formed, 6,7,8 three ones is respectively the control gliding mass of spring lock, lock body and pellet shot from a slingshot, wherein movable control rod 4 abuts against with gliding mass 6, during the locking bicycle, by key gliding mass 6 is pressed inward, gliding mass 6 just promotes movable control rod 4 and moves together, the one end is inserted on the front fork in the bayonet socket 1 on the vertical tube, key makes gliding mass 6 by locked then, can not reset, headstock just can not rotate like this, when opening bicycle, with key spring lock is unclamped, gliding mass 6 can reset and movable control rod 4 can be withdrawed from by spring 3 end that inserts it in the bayonet socket 1 that rebounds, and headstock just can rotate again like this.

In addition, anti-theft bicycle of the present utility model also has an antitheft machine-operated anchor fitting, as accompanying drawing, it is fixed on the vehicle frame by one, and inwall has in the protecting jacket of bayonet socket and the antitheft office a cooresponding with it elasticity fixture block group and produces, because protecting jacket can be fixed by welding on the bicycle, therefore, it can bear bigger impulsive force, and this protecting jacket can wholely entangle antitheft office, thereby make antitheft office be difficult to be pried open

If at will antitheft office is contained on the position of spider headstock sleeve pipe, it will destroy the specious of bicycle, and, after the robber also can shoulder away car, its antitheft office is sawed down or cuts off, to reach brokenly the purpose of lock, anti-theft bicycle of the present utility model has just in time overcome above deficiency, it is installed in spider headstock sleeve pipe and the big curved junction of shouldering with its anti-joyride device, when the plant produced bicycle tripod, on spider headstock sleeve pipe, fix a metal tube earlier as protecting jacket 5, and then curved greatly the shouldering of spider of burn-oning and having respective slot. has a bayonet socket 10 in advance in the bottom of protective jacket 5; Shut with bayonet socket 10 at theft-proof machine and correspondingly to fill an elastic clamping block 9; So that it can insert rear automatically spring in the bayonet socket 10 of protective jacket 5 and block antitheft office and be not drawn out protective jacket in antitheft office; The antitheft machine-operated fixture of anti-theft bicycle so of the present utility model has just been finished; During the assembling bicycle; To just form anti-theft bicycle of the present utility model in antitheft office its fixture of insertion; Even this car is shouldered away; Also can not use because prizing or unload lock

As accompanying drawing, in anti-theft bicycle of the present utility model, because its anchor fitting is imbedded the over half of antitheft office in big curved the shouldering, thereby guaranteed the specious of bicycle, protrude the decoration part that the position becomes bicycle, at this position switch lock, promptly convenient beautiful again, it is optimal site, for the big curved lady's bicycle of shouldering, bending the junction of shouldering with the front fork sleeve pipe greatly is a place that ratio is easier to rupture, and anchor fitting of the present utility model is fixed on this position, and has formed a triangle herein.This just makes this position obtain reinforcing, thereby has also improved the quality of bicycle.In addition, also just because antitheft office is contained in this position, make antitheft office obtain bending the protection of shouldering greatly and being difficult for destroyed.Even cut by force, whole bicycle is scrapped.Thereby make the pilferage bicycle lose meaning.

Claims

1: a kind of anti-theft bicycle that self has anti-theft capability, the antitheft office that it is characterized in that it forms by being fixed on the bayonet socket on the vertical tube 1 on the front fork, movable control rod 4, spring 3, control stalk sheath 2, control gliding mass 6, lock body 7 and pellet shot from a slingshot 8, and is fixed on by its anchor fitting in the vehicle frame of bicycle.

2: anti-theft bicycle according to claim 1 is characterized in that anchor fitting is made up of protecting jacket 5 that has bayonet socket 10 and the elasticity fixture block 8 that is contained in the antitheft office.

3: anti-theft bicycle according to claim 1, it is characterized in that the protecting jacket 5 of anchor fitting is fixed on the headstock sleeve pipe and the big curved junction of shouldering of spider, and partly protecting jacket is imbedded in the big knee.