CN2176951Y - Fully concealed lock head anti-theft lock of bicycle - Google Patents

Abstract

The utility model relates to a bicycle burglarproof lock of lock head fully concealed type. The utility model is characterized in that a lock body shell is fixedly welded between the upper cross beam and the lower oblique beam of the front vertical tube of a bicycle frame. A cylinder lock which is provided with a lock core with a spiral groove is arranged in the lock body shell. A bicycle front fork vertical tube and a handle vertical tube are respectively provided with a lock nostril. The lock nostrils is on the left of the lock core and as high as the lock core. When the bicycle is parked, the head of the bicycle is tilted toward the side of human body, and so the lock nostrils coincide with the lock core. The lock core is rotated clockwise, then the front end of the lock core is inserted into the lock nostrils. So the head of the lock can not be restored, the bicycle can not travel ahead normally, and so the burglarproof goal is achieved.

Description

Fully concealed lock head anti-theft lock of bicycle

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

Existing Anti-theft lock for bicycle all be car, lock separately, lock is installed in behind the car on wooden fork or the preceding wooden fork, or uses chain lock.Use existing lock, because of lock is exposed to outside the car body fully, easily pried open or cut off, theftproof performance is relatively poor.

Task of the present utility model provides a kind of improved Anti-theft lock for bicycle, and it is difficult for being pried open or cutting off, and can not keep straight on even be damaged vehicle.

Task of the present utility model is finished as follows: before cycle stand standpipe on weldering one lock body shell between flat-topped ridge and the lower inclined beam, the spring lock of the rotatable advance and retreat of intrinsic lock core in it, clockwise rotate key, lock core advances and inserts in the circular hole of stem and the preceding wooden fork standpipe of car, stop the bicycle handlebar to rotate, can not play guiding and use, vehicle can not be kept straight on, thereby reaches antitheft purpose.

Below with reference to accompanying drawing the utility model is described in further detail.

Fig. 1 is an assembling scheme drawing of the present utility model.

Fig. 2 is lock core of the present utility model and lock body assembling scheme drawing.

Fig. 3 is the lock nose scheme drawing on the stem.

Fig. 4 is the lock nose scheme drawing on the wooden fork standpipe before the handlebar.

Fig. 5 is a vertical front frame pipe lock body opening scheme drawing.

With reference to Fig. 1,2,3,4,5, bore the lock body opening ［ 14 ］ that a diameter is slightly larger than lock body ［ 7 ］ between the last flat-topped ridge of standpipe before cycle stand ［ 3 ］ and the lower inclined beam, the lock body shell ［ 10 ］ that internal diameter and lock body opening ［ 14 ］ are equal to aligns solid welding with it, and welding gusset ［ 5 ］, ［ 11 ］ reinforce (as Fig. 6), lock body ［ 7 ］ is packed in the lock body shell ［ 10 ］ by vertical front frame pipe ［ 3 ］ port, fixing by two pieces of screws ［ 6 ］, corresponding to the position of lock core ［ 8 ］ hole that is slightly larger than lock core ［ 8 ］ diameter is arranged at the aft end face of lock body shell ［ 10 ］, so that lock core ［ 8 ］ rotates smoothly and advances and retreat.Lock body ［ 7 ］ is identical with existing five hole spring locks basically with the structure of lock core ［ 8 ］, it is characterized in that the length of the length of lock core ［ 8 ］ greater than lock body ［ 7 ］, right-hand screw groove ［ 15 ］ shown in Figure 2 is arranged on the lock core ［ 8 ］, and on the lock body ［ 7 ］ that the A corresponding to spiral grooves ［ 15 ］ holds, be drilled with through hole, straight pin ［ 16 ］ and spring ［ 17 ］ are housed in it, straight pin ［ 16 ］ is snapped in the spiral grooves ［ 15 ］ of lock core ［ 8 ］ all the time, key ［ 9 ］, lock core ［ 8 ］ relatively rotates with lock body ［ 7 ］, and lock core ［ 8 ］ can be advanced and retreat with respect to lock body ［ 7 ］ under the effect of plug helix ［ 15 ］ and straight pin ［ 16 ］.With reference to Fig. 3, Fig. 4, go up corresponding to the lock height of body opening ［ 14 ］ of vertical front frame pipe ［ 3 ］ at stem ［ 1 ］ and preceding wooden fork standpipe ［ 2 ］ and to make lock nostril ［ 13-2 ］, ［ 13-1 ］ respectively, the position center line is taken back, front-wheel is askew to left avertence so that bicycle is parked the back, makes lock nostril ［ 13-2 ］, ［ 13-1 ］, aligns with lock core ［ 8 ］, lock core ［ 8 ］ is inserted smoothly, with the headstock locking, can not lead, thereby reach antitheft purpose.

The utility model also is applicable to the vehicle that steering handles such as motor bike turn to.

Claims (3)

1, a kind of complete hidden tapered end formula anti-theft column lock of bicycle that constitutes by lock core [8], lock body [7], lock body shell [10], lock nostril [13-1], [13-2], it is characterized in that being shaped on the lock core [8] spiral grooves [15], bore a circular hole on the relevant position of lock body [7], pack in it straight pin [16], spring [17], one end of straight pin [16] is inserted in the lock core spiral grooves [15], with key rotation lock core [8], lock core [8] advances (or retreating) with respect to lock body [7], and the left end of lock core [8] can insert or withdraw from lock nostril [13-1], [13-2].

2,, it is characterized in that locking nostril ［ 13-1 ］, ［ 13-2 ］ and be produced in before the car on the wooden fork standpipe ［ 2 ］ and stem ［ 1 ］ by the complete hidden tapered end formula anti-theft column lock of the described bicycle of claim 1.

3,, it is characterized in that lock body is installed on the preceding standpipe ［ 3 ］ of cycle stand by claim 1 or the complete hidden tapered end formula anti-theft column lock of 2 described bicycles.

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