CN2467376Y

CN2467376Y - Hidden lock of bicycle

Info

Publication number: CN2467376Y
Application number: CN 01217741
Authority: CN
Inventors: 王腾云
Original assignee: SHENGCANG CAR-MOTORCYCLE FITTINGS Co LTD WENZHOU
Current assignee: SHENGCANG CAR-MOTORCYCLE FITTINGS Co LTD WENZHOU
Priority date: 2001-02-28
Filing date: 2001-02-28
Publication date: 2001-12-26
Anticipated expiration: 2011-02-28

Abstract

The utility model relates to a hidden lock for a bicycle. A lock body is fixed in a central shaft of the section which is threaded on a bicycle frame on a front fork; the top end, the bottom end and the opposite wall of the bottom end are provided with a lock core hole, a jack and a clamp hole. A lock shell can rotate, and a lock core, wherein, the surface of which is provided with teeth, is arranged in the lock cover hole; a lock core shaft is fixed on the lock body. A key hole and the clamp hole are formed on the central shaft of the front fork and the bicycle frame corresponding to the key hole on the lock core and the clamp hole on the lock body. A gear engaged with the teeth of the lock shell is clamped on a clamp cylinder, wherein, both ends of which are erected on the jack and the clamp hole, and the clamp cylinder is provided with spiral groove. Screw threads fixed on the bottom end of the lock body is butted on the spiral groove. The lock has the advantages of favorable theft-proof function, convenient storage and difficult loss.

Description

The built-in lock of bicycle

The utility model relates to a kind of built-in lock of bicycle.

Usually, locks adapted for bicycle has two kinds, a kind of is the dish lock that directly is fixed on the bicycle rear place, and another kind is the random chain lock of stationary bicycle, and these two kinds of locks all are exposed to outside the car body, the burglar is very easy to commit theft by instrument destruction lock body, and afterwards a kind of chain lock is not fixed on the car body, in the use, often takes up and down from car body, both be not easy to keeping, also very easily lost.

The purpose of this utility model is to provide a kind of built-in lock of bicycle, and it has good anti-theft feature, and is convenient to keeping, is difficult for losing.

For reaching above-mentioned purpose, solution of the present utility model is:

The built-in lock of bicycle mainly comprises members such as lock body, core, gear, card cylinder; Lock body is fixed on bicycle front fork and is set in that section center shaft on the vehicle frame, respectively offers a lock core hole, a jack and a hole clipping on the wall on lock body top, bottom and opposite, bottom; A lock housing core rotatable, that lock mandrel is rotatable places lock core hole, and lock mandrel is fixed on the lock body lock housing surface formation tooth; The key hole of the corresponding core of front fork center shaft and vehicle frame and the hole clipping of lock body also form key hole and hole clipping; The tooth engagement on gear and lock housing surface, gear fix on the card cylinder; Frame is on jack and hole clipping respectively at the two ends of card cylinder, and one section plug helix is offered on the surface of card cylinder; One end of a thread is fixed on the bottom of lock body, and the other end is butted on the plug helix of card cylinder.

Above-mentioned lock body is offered a knock hole on the lock core hole opposite, the inner end of lock mandrel is protruded and formed registration mast, and lock mandrel is inserted in the knock hole by registration mast and is fixed on the lock body.

The bottom of above-mentioned lock body has an aperture, and thread is inserted on the aperture, and stretches into lock body, and a fixture block plug drops out from lock body to prevent thread in aperture.

The axis hole of said gear is a hexagonal hole, and the corresponding hexagon that forms expands cervical part of esophagus on the card cylinder, and gear fixedly is nested with on the expansion cervical part of esophagus of card cylinder by jump ring.

Adopt said structure, the utility model compared with prior art is installed in bicycle inside because of lock body is hidden, and the burglar can't destroy lock body by instrument and commit theft under the prerequisite of not damaging frame, so, have good anti-theft feature; And, because lock body is fixedly mounted on car inside,, needn't consider the collection of lock body so only need carry key, both be convenient to keeping, also be difficult for losing.

Below in conjunction with accompanying drawing and most preferred embodiment, the utility model is further described.

Fig. 1 is the utility model three-dimensional exploded view (one);

Fig. 2 is the utility model three-dimensional exploded view (two);

Fig. 3 is the utility model assembled state External view (unlocking condition);

Fig. 4 is the local enlarging section view of Fig. 3;

Fig. 5 is the utility model running condition External view (blocking figure);

Fig. 6 is the local enlarging section view of Fig. 5.

See also shown in Fig. 1,2, the built-in lock of the bicycle that the utility model provides mainly comprises members such as lock body 1, core 2, gear 3, card cylinder 4, wherein:

Lock body 1 is fixed on bicycle front fork by two rivets and is set in that section center shaft 9 on the vehicle frame 8, respectively offers a lock core hole 11, a jack 12 and a hole clipping 13 on the wall on lock body 1 top, bottom and opposite, bottom; Also offer a knock hole 14 on lock core hole 11 opposites, have an aperture 15 in addition, and on the sidewall of lock body 1, have an assembly opening 16 in the bottom of lock body 1.

A core 2 places lock core hole 11, the lock housing 21 of this core 2 turns, lock mandrel 22 is rotatable, and the inner end of lock mandrel 22 is protruded and is formed registration mast 23, and lock mandrel 22 is inserted in by registration mast 23 and is fixed in the knock hole 14 on the lock body 1, and lock housing 21 surfaces form tooth 211.

The key hole of front fork center shaft 9 and vehicle frame 8 corresponding cores 2 and the hole clipping of lock body 1 13

form key hole

91,81 and hole clipping 92,82, and during the position alignment of key hole 91, hole clipping 92 and key hole 81, hole clipping 82, the handle that is fixed on front fork center shaft 9 tops is miter angle.

Tooth 211 engagements on gear 3 and lock housing 21 surfaces, the axis hole of gear 3 is a hexagonal hole.

The two ends difference frame of a card cylinder 4 is on jack 12 and hole clipping 13.One section plug helix 41 is offered on the surface of card cylinder 4, and the hexagonal shaft hole of corresponding gear 3 forms a hexagon and expand cervical part of esophagus 42, and gear 3 fixedly is nested with on this expansion cervical part of esophagus 42 by jump ring 43.

A thread 5 is inserted on the aperture 15, and stretches into lock body 1, one fixture block (not shown) plug in aperture 15, drops out from lock body 1 to prevent thread 5; The inner end of thread 5 is butted on the plug helix 41 of card cylinder 4.

During the utility model assembling, as Fig. 3, shown in 4, earlier gear 3 is inserted in the lock body 1 by assembly opening 16, and will block cylinder 4 and be set in the lock body 1 by hole clipping 13, make gear 3 by jump ring 43, the hexagon axis hole expands cooperating of cervical part of esophagus 42 with hexagon and fixedly is nested with on the expansion cervical part of esophagus 42 of card cylinder 4, simultaneously, to block the two ends difference frame of cylinder 4 on jack 12 and hole clipping 13, then, core 2 is placed the lock core hole 11 of lock body 1, lock mandrel 22 is fixed on the lock body 1, and the gear 3 and the tooth 211 on lock housing 21 surfaces are meshed, again with thread 5 by a fixture block plug in aperture 15 and be inserted on the aperture 15, the inner end of thread 5 then is butted on the plug helix 41 of card cylinder 4, then, to assemble core 2, gear 3, card cylinder 4, the lock body 1 of thread 5 is fixed in the front fork center shaft 9 by rivet, make hole clipping 13 positions of the key hole of the key hole 91 of front fork center shaft 9 and hole clipping 92 and core 2 and lock body 1 corresponding, at last, the front fork center shaft 9 of having assembled lock body 1 placed be fixed in the vehicle frame 8, key hole 81 and hole clipping 82 on the vehicle frame 8 are in together on the circumference with the key hole of core 2 and the hole clipping 13 of lock body 1, promptly finish the combination of whole lock body, as shown in Figure 3.

When the utility model uses,, show that card cylinder 4 only is on the hole clipping 13 of lock body 1, be not in the hole clipping 82 of vehicle frame 8, no any location between front fork center shaft 9 and the vehicle frame 8 and can relatively rotating as Fig. 4 at unlocking condition.

When desiring locking, cooperate Fig. 5, shown in 6, rotate front fork center shaft 9 earlier, key hole 81 and hole clipping 82 on the vehicle frame 8 are aimed at the key hole 91 and the hole clipping 92 of front fork center shaft 9 respectively, again key is passed vehicle frame 8 successively, front fork center shaft 9, the key hole of core 2, insert in the core 2, key, drive lock housing 21 rotates thereupon, tooth 211 and gear 3 engagements by lock housing 21 surfaces, be transmitted in gear 3 and rotate, thereby card cylinder 4 is also rotated, card cylinder 4 axially moves because of thread 5 cooperates with plug helix 41, card cylinder 4 stretches out from hole clipping 13 gradually until being through lock body 1 and front fork center shaft 9, the hole clipping 13 of vehicle frame 8,92, on 82, as shown in Figure 6, because of card cylinder 4 location can not relatively rotate, extract key out between front fork center shaft 9 and the vehicle frame 8, promptly be blocking, at this moment, the handle that is fixed on front fork center shaft 9 tops is miter angle, can make things convenient for parking of bicycle.

When desiring to unblank again, directly key is passed vehicle frame 8 successively, front fork center shaft 9, the key hole of core 2, insert in the core 2, key in the opposite direction, drive lock housing 21 rotates thereupon, tooth 211 and gear 3 engagements by lock housing 21 surfaces are transmitted in gear 3 and rotate, and drive card cylinder 4 and also rotate, card cylinder 4 axially moves because of thread 5 cooperates with plug helix 41, card cylinder 4 inwardly contracts again gradually, on the hole clipping 13 that is in lock body 1 again, and is not in the hole clipping 82 of vehicle frame 8, as shown in Figure 4, no longer include card cylinder 4 location between front fork center shaft 9 and the vehicle frame 8 and can relatively rotate, extract key out, promptly be unlocking condition.

Claims

1, the built-in lock of bicycle is characterized in that: mainly comprise members such as lock body, core, gear, card cylinder; Lock body is fixed on bicycle front fork and is set in that section center shaft on the vehicle frame, respectively offers a lock core hole, a jack and a hole clipping on the wall on lock body top, bottom and opposite, bottom; A lock housing core rotatable, that lock mandrel is rotatable places lock core hole, and lock mandrel is fixed on the lock body lock housing surface formation tooth; The key hole of the corresponding core of front fork center shaft and vehicle frame and the hole clipping of lock body also form key hole and hole clipping; The tooth engagement on gear and lock housing surface, gear fix on the card cylinder; Frame is on jack and hole clipping respectively at the two ends of card cylinder, and one section plug helix is offered on the surface of card cylinder; One end of a thread is fixed on the bottom of lock body, and the other end is butted on the plug helix of card cylinder.

2, the built-in lock of bicycle as claimed in claim 1 is characterized in that: lock body is offered a knock hole on the lock core hole opposite, and the inner end of lock mandrel is protruded and formed registration mast, and lock mandrel is inserted in the knock hole by registration mast and is fixed on the lock body.

3, the built-in lock of bicycle as claimed in claim 1 or 2 is characterized in that: the bottom of lock body has an aperture, and thread is inserted on the aperture, and stretches into lock body, and a fixture block plug is in aperture.

4, the built-in lock of bicycle as claimed in claim 3 is characterized in that: the axis hole of gear is a hexagonal hole, and the corresponding hexagon that forms expands cervical part of esophagus on the card cylinder, and gear fixedly is nested with on the expansion cervical part of esophagus of card cylinder by jump ring.