CN2175812Y - Anti-theft lock for bicycle - Google Patents

Abstract

The utility model relates to a burglarproof lock of a bicycle. Because the existing bicycle locks can only lock the back wheels, a person stealing bicycles can push a bicycle to travel forward by raising the back wheel of the bicycle. The product comprises a lock core 1, a lock case 10 fixedly connected to the lock core 1, a lock-tongue 9 which passes through the lock core 1 and the hole 2 of the lock case 10, a slot 8 arranged on the lock case 10. When the lock-tongue 9 is locked, a sealing ring is formed by the lock-tongue 9 and the slot 8. An end head and a Y-shaped connecting rod connected with the front axle of a bicycle are fixed on the lock case 10. When the pedal crank, the pedal shaft or other elements of a bicycle body is locked by the slot 8 and the lock-tongue 9 of the lock case 10, one side of the front end of the Y-shaped connecting rod is fixedly connected to the front axle, the other side of the Y-shaped connecting rod is inserted into a bicycle front wheel, and so the pedal crank and the front wheel can not be rotated. The utility model can be widely used for a bicycle, a manpower vehicle and a motorcycle to play the function of theft protection.

Description

Anti-theft lock for bicycle

The utility model relates to a kind of lock that prevents to use without authorization or steal bicycle.

Common lock is the rear wheel of lock bicycle, and the cracksman can lift trailing wheel, is pushing away car and is moving ahead.It is its poor safety performance.Number of patent application is September 25 1991 902264087(day for announcing) patent application document in disclosed bicycle Lock with double safety guard, a kind of bicycle lock that bicycle front fork and axis are pinned is provided.It is compared with common lock, and its theftproof performance is better.But the complex structure of this bicycle Lock with double safety guard is installed difficulty, and particularly it must be at perforate or groove on the bicycle tripod, on the front fork, on the axis, and this will influence its intensity.

The purpose of this utility model provides a kind of any parts simple in structure, easy for installation, not disabled car, theftproof performance good pedal car theftproof lock.

Content of the present utility model comprises: lock core, with the lock box that lock core is connected, pass the dead bolt in hole on lock core, the lock box, and on lock box, have groove, dead bolt when locking and this groove formation closed-loop, on lock box, be connected with the Y shape connecting rod that the termination links to each other with the bicycle front axle.

Advantage of the present utility model is:

1, theftproof performance is good.Its lock box and dead bolt make pedal cranks not rotate the pedal cranks locking of bicycle, can not ride.Lock Che Shike forms 30～50 degree angles with front-wheel and vehicle frame, and Y shape connecting rod front end one end links to each other with front axle, and the other end inserts in the spoke of front-wheel, and it is stuck with connecting rod jump ring to be set, and can not return, and can't carry out behind the lock car.Make it really to have the function of double insurance.

2, easy to install.During installation, Y shape connecting rod one end is fixed in front axle left side, other establishes hook or socket and is fixed on the handlebar core and gets final product.During the lock car connecting rod and lock are left behind from hook or socket, rotate handlebar and make front-wheel and tripod form 30～50 angles, the auxilliary bar 6～20cm of front-wheel is inserted in another termination of Y shape connecting rod, pedal cranks or pedal shaft etc. is put into lock box, locking gets final product.

3, simple in structure.Any parts that must not change bicycle are installed, safe and reliable, can be used for bicycle, tricycle, motorcycle etc.

4, lock after since the lock the fixed bar screw thread link closely the axle screw play a kind of function of carrying on the back cap, can prevent that front-wheel is stolen.

5, lock after, can bear a people on the foot rest and stand in top weight.

Fig. 1 is the structural representation (right side is a stereogram, and the left side is the complete section front view, and the lock box right-hand member is a pedal cranks, and leaning out axletree in dead bolt 9 and the lock box 10 is the foot rest axle) of the utility model embodiment 2 and embodiment 3 included contents;

Fig. 2 is corresponding part 4 under the state, part 5, part 6 operating angles (Y shape) schematic diagram (part 6 termination gaps are the bicycle front axle, omit part 7) overlooked with Fig. 1;

Fig. 3 is an embodiment 1Y shape connecting rod left side schematic diagram

Fig. 4 is an embodiment 4Y shape connecting rod left side schematic diagram

For example the utility model is described in detail below in conjunction with accompanying drawing:

Embodiment 1:

Lock core 1, the lock box 10 that is connected with lock core 1, pass the dead bolt 9 in hole 2 on lock core 1, the lock box 10, dead bolt 9 can be extracted or be inserted after lock core 1 usefulness is key operated, on lock box 10, have groove 8, its spill can be used to hold pedal cranks head (Fig. 2) or foot rest axle, also can be used to hold a certain axle (bar) on the vehicle frame, and the spill in back two kinds of situation Baltimore grooves is at the axis direction of connecting rod.Dead bolt 9 is used for sealing the opening of Baltimore groove, be dead bolt when locking and these groove 8 formation closed-loops, be connected with the Y shape connecting rod that the termination links to each other with the bicycle front axle on the lock box 10, insert in the front-wheel spoke another termination (referring to Y shape top), front-wheel can not be rotated, pedal cranks can not be rotated, adjust Y shape length of connecting rod according to vehicle, when making front and back wheel at an angle, antitheft, anti-to push away away performance better.

Embodiment 2:

Close with embodiment 1, can change into by following in addition part for Y shape connecting rod and to form: (1) fixed bar 6, formation Y shape top one end is used for linking to each other with the car front axle; (2) the connecting rod cover 3 hinged with fixed bar 6, connecting rod cover 3 can be arranged in the Baltimore groove of fixed bar 6 one ends, and fixed bar 6 can put around jointed shaft 5 at connecting rod and freely rotate; (3) jointed shaft 5 can be established 1～2; (4) pitman shaft 4 that is connected of an end that is connected with connecting rod cover 3 pine covers and described lock box 10, owing to be that pine is overlapped connection, connecting rod 3 can move freely along pitman shaft 4, there is defining flange pitman shaft 4 ends, in case slippage when moving freely.But because its rotatory, can establish hook on handlebar core or vehicle frame, or socket, lock is opened the back and needn't be pulled down with the front axle fixed end, only Y shape connecting rod is inserted wheel one sidespin and goes out, and lock box one end hung on hook or the socket gets final product.

Embodiment 3:

Close with embodiment 2, at pitman shaft 4 more in short-term, for preventing the spacing inefficacy of Y shape, leave one group of unidirectional spacing pit apart from termination 6～20cm place at pitman shaft 4, be a spacing side for the plane or the curved surface of pitman shaft 4 axis normal, another side is the inclined-plane that tilts with axis, pit is bumped into for the locating part 7 on the adapter sleeve 3, the composition of locating part 7 can comprise shell, elastic component (as various springs) and have the spacer pin on inclined-plane, this inclined-plane is corresponding with pitman shaft 4 ramps, uses long side that intersects facial plane or curved surface with the inclined-plane to play position-limiting action, shrinks back to lock box 10 directions in order to limiting rod axle 4.

Embodiment 4:

On embodiment 1 basis, one is made in the top and the bottom of Y shape connecting rod, between the end that links to each other with front axle and other parts (promptly made one other two ends) hinge is housed and the other end is in Y shape small end fork, makes between them and can relatively rotate.

Claims (4)

1, a kind of Anti-theft lock for bicycle, its composition comprises: lock core, the lock box that is connected with lock core, pass the dead bolt in hole on lock core, the lock box, it is characterized in that: on described lock box, have groove, with this groove formation closed-loop, be connected with the Y shape connecting rod that the termination links to each other with the bicycle front axle on the described lock box during locking of described dead bolt.

2, Anti-theft lock for bicycle according to claim 1, it is characterized in that: the composition of described Y shape connecting rod comprises: fixed bar, pass through the hinged connecting rod cover of axle with fixed bar, the pitman shaft that an end that is connected with connecting rod cover pine cover and described lock box are connected, there is defining flange this pitman shaft termination.

3, Anti-theft lock for bicycle according to claim 2 is characterized in that: described connecting rod puts flexible unidirectional locating part, the unidirectional spacing pit that has one group of above-mentioned locating part of confession to be bumped into apart from termination 6～20cm place on described pitman shaft.

4, Anti-theft lock for bicycle according to claim 1 is characterized in that: between the end that described Y shape connecting rod links to each other with front axle at the place of diverging to, upper end and other parts hinge is housed.

Images