CN2292054Y

CN2292054Y - Bicycle lock

Info

Publication number: CN2292054Y
Application number: CN97209265U
Authority: CN
Inventors: 刘涌
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-01-21
Filing date: 1997-01-21
Publication date: 1998-09-23
Anticipated expiration: 2007-01-21

Abstract

The utility model discloses a bicycle lock which is composed of a flat fork, a lock sleeve, a lock body, a lock beam, a lock pin, and a middle axle which is provided with a triangular arch. The utility model is characterized in that the triangular arch is arranged in the middle axle; an arc chute in the triangular arch is recessed in the middle axle; the diameter of a groove of the triangular arch is matched with the diameter of the middle axle; the flat fork is connected with a center tap and the lock sleeve; the lock beam is inserted into the connecting part of the flat fork and the centre tap form a lock beam hole on the lock sleeve. The utility model has the advantages of simple structure and convenient operation. The utility model is hard to be broken when the bicycle is locked. The bicycle body does not need to be greatly improved in installing, and the locking is firm.

Description

Bicycle lock

The utility model relates to a kind of bicycle lock, is used for a kind of blocking device of locking bicycle axis.

The bicycle theft phenomenon is very serious, so people have made diversified blocking device, is used for theft protection.It is purpose that lock commonly used is the direct pinning of annular vehicle wheel spoke motionless with the wheel commentaries on classics.But this lock all can be sawed-off or be destroyed, and makes lock lose function.Therefore at present a lot of locking devices are to be used for locking bicycle tap front fork or trailing wheel, can play certain antitheft effect, the dark root of Dahurian angelica of lock body or lock core, but still have weak point.Chinese patent discloses a kind of " built-in bicycle lock device ", " CN 2059445 ", be put in front fork and spider junction, must do bigger change to car body during installation, but still can push away away bicycle as the vertical kelly that the pintle hook lock horizontal rack is fallen in prying.And for example " anti-thief safety lock installed on front fork of bike ", " CN 2064400U ", can push away away bicycle by destroying lock housing, the directed anti-theft lock device complexity of bicycle front fork, also must special chain, also as " built-in lock of bicycle front fork ", " CN 2130738Y ", this locking device is complicated, the lock body and the dark root of Dahurian angelica that are installed in front fork four-way place are formed at the lock core of descending back end and front fork four-way piece junction, lock core is bolted on the back brake bolt hole by back brake, the lock housing of lock body has tapered end outward, lockhole and lockhole axle on the tapered end, the locking bolt of limiting stopper depression bar lock body insert reach on the lock core and lock core on push rod flexibly connect, the dead bolt on the lock core is corresponding with the dead bolt hole on the preceding fork shaft.These devices are hidden, and all kinds of annular anti-theft column lock that is specifically designed to the lock spoke has certain advantage, but still can be exposed to the outer part of car body by destruction, bear bicycle away.

The purpose of this utility model has provided a kind of bicycle lock, sets the triangle arc in bicycle middle shaft, and control trailing wheel, axis rotate, and be simple in structure, easy to use, and locking firmly.

For reaching above-mentioned purpose, the utility model by the following technical solutions: bicycle lock is made of chain stay, lock tube, lock body, lock bridge, purl, triangle arc etc.It is characterized in that chain stay links to each other with center tap, lock tube, the triangle arc is housed in axis, with spiral nail lock body is fixed in the lock tube then, fixedly behind the lock body, the lock bridge of axis lock beam hole from the lock tube is inserted into chain stay and links to each other lock bridge spring lock bridge fixed by nut with center tap.Again the purl spring is fixed to the purl afterbody, the square opening that purl is aimed on the lock tube inserts then, and passes lock body and lock tube, and the purl screw is fixed on the top of purl, at last axis being installed in the shaft adapter.

Fig. 1 is the bicycle lock structural representation

Fig. 2 is the cooperation scheme drawing of Fig. 1

Fig. 3 is the lock construction scheme drawing

Fig. 4 is a triangle arc structural representation

With reference to the accompanying drawings the utility model is described in further detail below:

According to Fig. 1, Fig. 2, Fig. 3, Fig. 4 as can be known, chain stay 2 joins with axis 1 and links to each other with lock tube 4, triangle arc 6 is housed in axis 1, deep-slotted chip breaker 20 is arranged in the axis 1, be beneficial in the deep-slotted chip breaker 20 that lock bridge is stuck in angle arc 6, chain stay 2 is a hollow tubular, chain stay 2 has corresponding hole with both sides and chain stay 2 that lock tube 4 joins, lock tube 4 top and the bottom are hollow, be convenient to lock body 5 from last insertion, respectively leave two fixedly spiral nail 13 holes of lock body at lock tube 4 front and backs, there is corresponding square hole at front, the back side with lock tube 4 below spiral nail 13 holes, are convenient to purl 7 and insert.With spiral nail 13 lock body 5 is fixed in the lock tube 4, lock beam hole, purl hole, spiral nail hole are arranged on the lock body 5.Fixedly behind the lock body 5, lock bridge 3 is inserted into chain stay 2 and center tap connecting place from lock beam hole, and lock bridge spring 9 usefulness lock bridge nuts 10 are fixing, and lock bridge is the circle bar shaped, diameter is less than bore in the chain stay 2, the lock bridge top is pointed, and the lock bridge afterbody has the silk mouth, is convenient to lock bridge nut 10, have two grooves on the lock bridge 3, be convenient on the one hand lock bridge dead bolts 19 in the lock body 5 and block lock bridge and advance, be convenient to purl 7 on the other hand and penetrate, and prevent that lock bridge 3 from ejecting under the tension force effect of lock bridge spring 9.Then purl spring 8 is fixed to the purl afterbody, the square opening that purl 7 is aimed on the lock tube inserts, and passes lock body 5 and lock tube 4, purl screw 16 is fixed to the top of purl 7.There is the purl dead bolt 15 that a groove is convenient in the lock body to block purl on the purl.The purl tip has the silk mouth to be convenient to the purl screw.At last axis 1 is installed in the center tap, triangle arc 6 is housed in the axis 1, the radius of triangle arc 6 is greater than the radius of axis 1, and less than the radius of center tap 14,6 minutes three lobes of triangle arc are triangular, in deep-slotted chip breaker 20 recessed axis 1 bars in the triangular form.Lock is made up of lock bridge 3 and purl 7, lock bridge 3 passes lock body 5 to the lock bridge dead bolt 19 in the lock body and blocks lock bridge 3, have only by just taking out lock bridge behind the key operated lock, after installing lock bridge 3, again lock bridge spring 9 and lock bridge nut 10 are docile and obedient from lock bridge 3 afterbodys and install, with the lock bridge card 17 on the lock bridge nut 10 spring is fixed on the lock bridge nut 10, the effect of lock bridge spring 9 and lock bridge nut 10 is when key operated lock, lock bridge is because the tension force effect of spring is sent lock bridge back to original position in triangle arc 6, and the triangle arc resistance that no longer blocks in the axis 1 hinders its rotation.Then purl spring 8 is through on the purl 7, with the purl card 18 on the purl cap 11 spring is fixed on the purl cap 11, again purl dead bolt 15 is blocked purl 7, when the effect of its purl spring 8 is pinned trailing wheel when purl, open the lock back and purl is sent back to original position, do not rotate so that do not influence trailing wheel by the spring tension effect of purl.After installing purl, at last again purl screw 16 by to purl, going on the purl top, prevent purl because the tension force of spring ejects lock body.

The utility model compared with prior art has the following advantages: simple in structure, easy to use, pin During car, survivable, cost is low, and the exposed parts volume is little, need not do bigger change to car body during installation, Locking firmly.

Claims

1, a kind of bicycle lock, it is made of chain stay (2), lock tube (4), lock body (5), lock bridge (3), purl (7), it is characterized in that in axis (1), being equipped with triangle arc (6), chain stay (2) links to each other with center tap (14), lock tube (4), and lock bridge (3) is gone up lock beam hole from lock tube (4) and is inserted into chain stay (2) and center tap (14) connecting place.

2, a kind of bicycle lock according to claim 1 is characterized in that purl spring (8) is through on the purl (7), and purl dead bolt (15) blocks purl (7).

3, a kind of bicycle lock according to claim 1 is characterized in that lock bridge (3) passes lock body (5) to the lock bridge dead bolt (19) in the lock body and blocks lock bridge (3).

4, a kind of bicycle lock according to claim 1 is characterized in that in the recessed axis of arc horizontal stroke (20) (1) in the triangle arc (6).