CN2111908U - Bicycle's anti-theft device - Google Patents

Abstract

The utility model provides a novel bicycle lock, which is fixed in the steel tube of the intersecting point of the tripod, the faucet and the front fork of the bicycle. The position of the safety trough or hole of the shaft of the faucet is appropriately selected. After the bicycle is locked, the front and the back wheels are arranged in a fixed non-parallel angle. The anti-theft system that the bicycle can not be pried and beaten to be damaged and the bicycle can not be pushed to walk is formed. The utility model only needs improve the safe structure of the existing bicycle a little, which is simple and easy. The novel bicycle lock can be used to improve the used bicycle, the used man-power tricycle and the used light motorcycle to improve the anti-theft effect, and the novel bicycle lock can also be used on the new bicycle, the new man-power tricycle and the new light motorcycle.

Description

Bicycle's anti-theft device

The utility model relates to the anti-theft safety device of bicycle.

The antitheft way of bicycle has two classes now, and the one, a bicycle lock is fixed under the cushion, block trailing wheel when locking, another kind of way is to lock with the activity of band chain to be locked on front-wheel or the trailing wheel temporarily.This two class formation all has two problems, and the one, lock body exposes very easily to be opened by sledge, and the one, bicycle front-wheel or the trailing wheel that pins lifted gently and bicycle can be pushed away away.Therefore anti-theft effect is very poor, the stolen worry that has become the resident of bicycle.

The purpose of this utility model is: invent the special-purpose lock that a kind of profile and structure all have innovation, be fixed in by the attachment that is complementary with it in steel pipe of bicycle tripod, make lock and car body form an integral body.And the non-parallel angle placement that makes the bicycle wheels of pinning become to fix by the position that is chosen in the safety groove left on front fork column tube and the tap axle or hole.Reach sledge and do not open, do not rot, push away the safe effect of not walking.

Below in conjunction with accompanying drawing 1,2 explanation concrete structures of the present utility model and device: Fig. 1 is structural representation, and Fig. 2 is the cross section A-A scheme drawing of Fig. 1.(1) be later-model special-purpose lock, (2) are attachments, and (3) are the spider steel pipes, and (4) are the front fork steel pipes, (5) be leading steel pipe, (6) are safety groove or hole, and (7) are dead bolts, and (8) are lock bodies, (9) be core, (10) are the eccentric shafts on the core, and (11) are lock housings.

The special use lock (1) of safety device, attachment (2) with a kind of special use is fixed on bicycle tripod (3), steel pipe the inside with front fork (4) tap (5) confluce, open a safety groove or hole (6) on bicycle front fork and tap axle, front and back wheel became fixing non-parallel angle (seeing accompanying drawing 1) after the position of safety groove not only will but also will make bicycle pin over against dead bolt.

The situation that special-purpose lock is installed in the steel pipe is seen accompanying drawing 2.(2) be that front end is hemispherical, the rear end is columned tubular attachment, and Yi Jinnan goes out.For novel lock can be complementary with attachment, be securely fixed in spider (3), front fork (4), in the steel pipe of tap (5) intersection, and it is little to overcome installing space, the problem of operating difficulties, and novel lock unit design becomes stepped, directly stir dead bolt (7) with the eccentric shaft (10) on the core (9), with lock housing (11) directly fixedly lock body (8) and core (9).

When pinning bicycle with this device, dead bolt stretches in safety groove or the hole, tap, front fork and spider are fixed together, and make the bicycle front-wheel become a fixing non-parallel angle to place with trailing wheel (car body just), though bicycle wheels can rotate, bicycle can only spin in the original place, can not ride away.The angle difference, the circle footpath of spinning is different.Even bicycle is dragged away or transported,, can not be opened by sledge because lock is fixed in the steel pipe.The lock sledge does not leave, and handle-bar, front fork, spider just are fixed together firmly and tear open not open.Thereby, steal the bicycle that goes and also become a pile scrap iron substantially, shaken cracksman's criminal motive to the foundation.

This new safety device, easy, firm, reliable, very easy implementation both can come the bicycle that is using is transformed with it, improved anti-theft effect, also can be installed on the bicycle of coming of new.Make a call to a suitably circular hole of size in man style or lady's bicycle spider front end, on the appropriate location of tap axle, open a sulculus or a hole that matches with the dead bolt size, set up special-purpose lock, promptly form an anti-theft bicycle that anti-theft effect is good.Use the same method and this safety device can be used on manual tricycle, perhaps on the light motorcycle.

Claims (3)

1, a kind of device that improves the bicycle theft-prevention safe effect: this device has a purpose made new exclusive lock (1), an attachment (2), on tap axle and front fork column tube, leave safety groove or hole (6), it is characterized in that new bicycle lock (1) being fixed on the steel pipe the inside of spider (3) and front fork (4), tap (5) intersection, and front and back wheel becomes to fix the placement of non-parallel angle after by the position of selecting safety groove on front fork and the tap axle or hole (6) bicycle being locked with special-purpose attachment (2).

2, device according to claim 1 is characterized in that the eccentric shaft (10) on the core of special special-purpose lock (1), directly stirs dead bolt (7), and with lock housing (11) directly fixedly lock body (8) and core (9), this locks integral body is stepped.

3, device according to claim 1 is characterized in that attachment (2) front end is hemispherical, and the rear end is cylindric.