CN2756773Y - Safety type bicycle pipe lock - Google Patents

Abstract

The utility model relates to a bicycle lock, concretely a safety type bicycle pipe lock. The safety type bicycle pipe lock comprises a lock ring (1) driving a toothed rack, a tubular lock (2), and a lock head, wherein the lock head is composed of a lock head (3), a lock core (4) rotatablely arranged in the lock head (3), and a toothed wheel disc fixed on the lock core (4). The toothed wheel disc (5) is engaged with the toothed rack. The utility model is characterized in that the lock head (3) is provided with a through hole (8) pointing to a disc surface of the toothed wheel disc (5) along the axial direction. The inside of the through hole (8) is provided with a stop pin (7) which can slide along the axial direction, and disc surface of the toothed wheel disc (5) is provided with a pin hole (6). When the lock is unlocked on the proper position, the pin hole (6) and the through hole (8) are aligned to form a locking mechanism of the toothed wheel disc. When the pipe lock rotates around the lock core (4) by 360 DEG under the rotary drive of a key, the pin hole (6) is aligned to the through hole (8). Under the action of manual operation or a lock pin spring, the front end of the stop pin (7) is inserted into the pin hole (6) to clamp the toothed wheel disc (5) and to cause the toothed wheel disc (5) not to be rotated. The lock ring (1) can not slide out to happen the erroneous locking by accident, and thus the utility model has good safety.

Description

Safety type bicycle pipe lock

Technical field: the utility model relates to bicycle lock, is specially safety type bicycle pipe lock.

Background technology: at present, bicycle lock can be divided into multiple by different structure, and U-shape lock, chain lock, steel cable lock, crab claw extension spring lock and crab claw pipe lock are arranged.Since crab claw pipe be locked in compare with U-shape lock, chain lock and steel cable lock have carry, advantage easy to use, have simple in structure, firm advantage again with the phase-locked ratio of crab claw extension spring simultaneously, therefore use extensive.Pipe is locked its primary structure and is comprised having lock ring, tubulose lock body, the tapered end that drives tooth bar, lock ring is slidably disposed in the tubulose lock body, tapered end is by tapered end and be arranged on the lock core in the tapered end rotationally and the toothed disc that is fixed on the lock core is formed, toothed disc and tooth bar engagement, drive lock core and toothed disc rotates together by screw key, and drive lock ring by toothed disc and tooth bar engagement and withdraw or stretch out the tubulose lock body and finish and unblank and lock.The bicycle lock of this structure is not owing to there is security insurance mechanism, and in the process of riding, because vibrations, lock ring may go out from lock Guan Zhongzhen, causes accident to lock, and bicycle is braked suddenly, causes personal injury accident, therefore exists potential safety hazard.

The utility model content: the purpose of this utility model is to provide a kind of safety type bicycle pipe lock that can unexpected not lock when the cycling for overcoming the deficiencies in the prior art.

The utility model is that to solve the problems of the technologies described above the technical scheme of taking as follows: a kind of safety type bicycle lock, comprise and have the lock ring that drives tooth bar, the tubulose lock body, tapered end, wherein tapered end is by tapered end be arranged on the lock core in the tapered end rotationally and the toothed disc that is fixed on the lock core is formed, toothed disc and tooth bar engagement, it is characterized in that: described tapered end upper edge is axially arranged with the through hole that points to the toothed disc card, being provided with in axial sliding in the through hole, the described toothed disc card of stop pin is provided with pin-and-hole, when unblanking to put in place, pin-and-hole and through hole align and constitute the toothed disc locking mechanism.

The utility model beneficial effect compared with prior art is: when pipe be locked in key turns drive unblank to put in place following one week of rotary locking cylinder after, pin-and-hole and through hole align, the stop pin front end inserts pin-and-hole and blocks toothed disc it can't be rotated manually or under the lock pin spring effect, thereby also produce the consequence of unexpected mistake lock, therefore have good safety with regard to making lock ring can not skid off too.

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

Description of drawings:

Accompanying drawing 1 is the utility model embodiment overall structure schematic diagram;

Accompanying drawing 2 is an embodiment overall structure schematic side view;

Accompanying drawing 3 is that embodiment tapered end A-A is to the structure sectional view.

Specific embodiment: as Figure 1-3, safety type bicycle pipe lock still comprises having the lock ring 1 that drives tooth bar, tubulose lock body 2, tapered end, lock ring 1 is slidably disposed in the tubulose lock body 2, tapered end is by tapered end 3 and be arranged on the lock core 4 in the tapered end 3 rotationally and the toothed disc 5 that is fixed on the lock core 4 is formed, lock core 4 breech faces are provided with the prismatic boss, described toothed disc 5 centers are provided with the installing hole that matches with the prismatic boss, toothed disc 5 installing holes are enclosed within on the prismatic boss and are connected, lock ring 1 outer surface is provided with tooth bar, toothed disc 5 and tooth bar engagement, tapered end 3 has placed end tubbiness tapered end shell 9, tapered end 3 is with tapered end shell 9 interference fit or use dowel fixes, tapered end shell 9 and tubulose lock body 2 one, described tapered end 3 upper edges are axially arranged with the through hole 8 that points to toothed disc 5 cards, preferably vertical with toothed disc 5 cards, being provided with in axial sliding in the through hole 8, stop pin 7 constitutes toothed disc 5 locking mechanisms, toothed disc 5 cards are provided with pin-and-hole 6, when unblanking to put in place, pin-and-hole 6 aligns with through hole 8, also through hole 8 can be made near the leading portion diameter of gear and be slightly larger than remainder, stop pin 7 is provided with and the slippery bulge loop of through hole 8 leading portion diameters near the front end place, insert through hole 8 from leading portion behind the sheathed lock pin spring on the stop pin 7, the afterbody part is outer to be exposed at outside the lock core 4 body end faces, stop pin 7 front ends become sphere, stop pin 7 can insert pin-and-hole 6 automatically when unblanking to put in place like this, when locking again, outside pulling stop pin 7 is exposed at lock core 4 external afterbodys parts its front end is pulled out from pin-and-hole 6, releasing can be locked by the backward rotation key to the restriction of toothed disc 5.

Claims (3)

1, a kind of safety type bicycle pipe lock, comprise and have the lock ring (1) that drives tooth bar, tubulose lock body (2), tapered end, wherein tapered end is by tapered end (3) be arranged on the lock core (4) in the tapered end (3) rotationally and the toothed disc (5) that is fixed on the lock core (4) is formed, toothed disc (5) and tooth bar engagement, it is characterized in that: described tapered end (3) upper edge is axially arranged with the through hole (8) that points to toothed disc (5) card, being provided with in axial sliding in the through hole (8), the described toothed disc of stop pin (7) (5) card is provided with pin-and-hole (6), when unblanking to put in place, pin-and-hole (6) aligns with through hole (8) and constitutes toothed disc (5) locking mechanism.

2, safety type bicycle pipe lock according to claim 1, it is characterized in that: the leading portion slightly larger in diameter of the close gear of described through hole (8) is in remainder, stop pin (7) is provided with and the slippery bulge loop of through hole (8) leading portion diameter near the front end place, stop pin (7) is arranged in the through hole (8) after going up sheathed lock pin spring, and stop pin (7) front end becomes sphere.

3, safety type bicycle pipe lock according to claim 1 and 2, it is characterized in that: lock core (4) breech face is provided with the prismatic boss, described toothed disc (5) center is provided with the installing hole that matches with the prismatic boss, and toothed disc (5) is enclosed within on the prismatic boss by installing hole and is connected.

Images