CN2302181Y - Antitheft bicycle - Google Patents

Abstract

The utility model relates to an anti-theft bicycle. Two small sections of lock beams are respectively inserted between a turning shaft of a bicycle head, and a bicycle beam, and between a middle axle and a back beam. A mechanical bolt lock is arranged on a lock hole of the lock beam. A turning clamping pin and a clamping pin of the middle axle are driven to move through the work of the bolt lock. The turning clamping pin and the clamping pin of the middle axle respectively enter a corresponding turning fix hole and a corresponding clamping hole of the middle axle, the turning shaft and the connecting rotation of the middle axle are fixed, and the bicycle can not be used. Because the bolt lock which is adopted by the utility model is arranged in the bicycle beam and is not solely exposed, the bolt lock can not be opened by theft measures of prying, filing, drilling, cutting, etc., and the theft phenomenon of the bicycle is reduced.

Description

A kind of anti-theft bicycle

The utility model relates to a kind of bicycle, especially a kind of anti-theft bicycle.

The anti-joyride device of existing bicycle is a lock.Lock has types such as ring-like lock, chain lock, cable-type padlock, V-type lock, in order not allow thief open lock easily, lockmaking producer works hard on the structure of lock one after another, develop the various anti-theft column locks opened of being difficult to more, but outside all being exposed to when installing owing to these locks, still adopted fierce means to prize, file, saw, bore, cut off by the lawless person easily, car is stolen, cause damage to the user.

The purpose of this utility model provides and a kind of lock is installed in the car beam, can pin headstock and axis, the anti-theft bicycle that makes the burglar be difficult to open.

The utility model is achieved in that

Each one on the car beam of the utility model selection connection bicycle headstock steering column jacket and bottom bracket axle, between car beam and steering column jacket and bottom bracket axle, insert one little section lock bridge respectively, settle a structure identical on the lock cave in lock bridge, the mechanical pin lock that can freely dismantle, by the work of latch lock, drive and turn to bayonet lock and the displacement of axis bayonet lock, make them enter cooresponding fixed orifice and the axis card cave of turning to respectively, the rotation of fixed bit steering shaft and axis makes the bicycle use of can not advancing.

Because the latch that the utility model adopts lock is installed in the car beam of bicycle, form one with the car beam, outside not being exposed to separately, prize, file, saw, bore, cut and all be difficult to open, can get to come out even open because of the bayonet lock in the car beam yet, and cause lock to ruin the consequence that car can't use, make the burglar forbidding.Can significantly reduce the stolen phenomenon of bicycle.The utility model is easy to use, and cost amplification is little.

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

Fig. 1 is the utility model head lock cross-sectional view.

Fig. 2 is a shaft lock cross-sectional view in the utility model.

Fig. 3 is the utility model latch lock construction scheme drawing.

Shown in the number in the figure: 1, steering shaft, 2, turn to fixed orifice, 3, screw hole, 4, steering column jacket, 5, headstock crossbeam, 6, lock bridge, 7, the lock cave, 8, block tongue, 9, turn to bayonet lock, 10, the screw passage, 11, the bayonet lock passage, 12, the latch lock, 13, turn 14, locking face, 15, screw, 16, block tongue, 17, latch, 18, the back rest, 19, axis, 20, the card cave, 21, bottom bracket axle.

As figure, the utility model is to insert one little section lock bridge (6) between headstock crossbeam (5) and headstock steering shaft (1), have on the lock bridge (6) the lock cave (7) that is used to insert latch lock (12) and laterally logical steering shaft (1) check screw passage (10) and in establish and turn to bayonet lock (9), lead to the bayonet lock passage (11) that turns to fixed orifice (2), latch is locked the block tongue (16) of latch (17) end in (12) and is turned to the block tongue (8) of bayonet lock (9) one ends to buckle mutually, turns to bayonet lock (10) past to turn to fixed orifice (2) to make cross travel; Middle shaft lock is installed on the bicycle back rest (18), between the back rest (18) and axis (19), insert one little section lock bridge, its structure and connection mode are the same, open 1～5 corresponding card cave (20) in addition on axis (19), and the axis bayonet lock can be made cross travel toward axis card cave.Head lock and middle shaft lock can be installed simultaneously, also can distinguish head lock or middle shaft lock are installed separately.

Latch lock (12) is that 1.5cm is the most suitable with the minor increment of the steering column jacket (4) of bicycle, lock bridge (6) and crossbeam (5) are with screw thread or alternate manner socket, screw mounting hole (3) on the steering column jacket (4) is relative with check screw passage (10), and bore can be consistent.The available at ordinary times plug of screw mounting hole (3) clogs, when bicycle is not loaded onto steering shaft, the screw hole of locking by screw mounting hole (3) check screw passage (10) and latch (15), with screw latch lock (12) is fixed on the lock bridge, block tongue (16) on the latch lock (12) buckle mutually with the cylindrical block tongue (8) of bayonet lock (9) one ends that turns in the bayonet lock passage (11), turn to bayonet lock just with lock interior latch and be connected with each other.Turn to the diameter of bayonet lock (9) should be a bit larger tham the diameter of latch (17), perhaps identical.When the work of latch lock, turn (13) in the lock rotate 180 °, and latch drives bayonet lock and is displaced to ultimate range, as 2～10mm, make to turn to bayonet lock just to enter turning in the fixed orifice on the steering shaft, steering shaft is blocked, headstock just can not rotate, so reached the purpose of pinning headstock.

Middle also the same principle of shaft lock, with common giving voluntarily different be: the cooresponding axis of axis bayonet lock (19) is made the shape among the figure, the inside radius of the maximum radius of axis (19) and bottom bracket axle (21) preferably differs 1～2mm, when the displacement of axis bayonet lock enters card cave (20) on the axis, axis promptly has been fixed, also be difficult to it is got with blunt bump axis, otherwise cause bicycle not use the bottom bracket axle damage, reach theft-proof purpose with this.

A dismounting screw (15) is arranged on the latch lock (12), and the effect of this screw is: when needs take out the latch lock, unscrew the dismounting screw, make it to withdraw from a little, catch or pull out gently with instrument with hand and get final product.

Claims (1)

1, a kind of anti-theft bicycle comprises headstock, vehicle frame, wheel, sits saddle, axis and foot-operated, it is characterized in that:

A, between headstock crossbeam (5) and headstock steering shaft (1), insert one little section lock bridge (6), have on the lock bridge (6) the lock cave (7) that is used to insert latch lock (12) and laterally logical steering shaft (1) check screw passage (10) and in establish and turn to bayonet lock (9), lead to the bayonet lock passage (11) that turns to fixed orifice (2), latch is locked the block tongue (16) of latch (17) end in (12) and is turned to the block tongue (8) of bayonet lock (9) one ends to buckle mutually, turns to bayonet lock (9) past to turn to fixed orifice (2) to make cross travel;

B, middle shaft lock are installed on the bicycle back rest (18), insert one little section lock bridge (6) between the back rest (18) and axis (19), open 1～5 corresponding card cave (20) in addition on axis (19), and the axis bayonet lock can be made cross travel toward axis card cave (20).

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