CN2158432Y - Safety lock for bicycle - Google Patents

Abstract

The utility model relates to an anti-theft safety lock for bicycles. Which comprises a lock head composed of a lock shell, a lock core, a cylinder pressure spring, a lock core cylinder, etc. A lock shaft is separated from the lock head, and the lock head and a shaft shell are respectively fixed on a left and a right fixing frames. The opening and the closing of the lock is accomplished by the disengagement and the buckling of a projecting head on the head of a lock tongue in the lock head with a groove of the lock shaft. A lock chain can be arranged on the tail of the lock shaft, which can accomplish the dual-safety of the lock. The utility model has the advantages of firm structure and good theft-proof performance, such as anti-prizing performance, anti-cutting performance, anti-knocking performance, etc.

Description

Safety lock for bicycle

The utility model relates to the bicycle lock of a kind of lock, particularly a kind of burglary insurance.

Present bicycle lock mostly is that annular is unblanked, though easy to use, poor stability.Various bicycle theft-prevention safety lock structure of rising in recent years is all comparatively complicated, makes relatively difficulty.The patent No. is 89218375.6 burglary insurance locks, though structure is simpler, than the past annular theftproof performance of unblanking very big improvement has been arranged, but because its suitable being contained on the bicycle front-wheel crotch, therefore use pretty troublesomely, especially be placed in the higher place of bicycle density, open very inconvenient.This theftproof lock is if insure with tamper tool, and lock just is easy to be unlocked, so still there is certain defective in security performance.

The purpose of this utility model is to provide to society a kind of bicycle theft-prevention safety lock of novelty, and it is not only simple in structure, firm, making is easy, and has good pick-proof performance.

Task of the present utility model is achieved in that this lock comprises tapered end, lock shaft and the fixed mount of being made up of lock housing, lock core, marble pressuring spring, lock core marble etc., and lock shaft and tapered end are separated, and tapered end and axle housing are separately fixed on left and right two fixed mounts; Have through hole on the axle housing, lock shaft passes this through hole and tapered end is locked and opened; Be equipped with in the tapered end and press tongue, press the tongue spring and dead bolt, the latch bolt spring of the transmission that matches with lock core, the bottom of dead bolt has prominent head, and after lock shaft injected tapered end, the prominent head of dead bolt was interlocked with the revolution groove of lock shaft head; The afterbody of lock shaft can be loaded onto a chain as required; Be made up of fixed head and pressing plate with the fixed mount that tapered end is connected with axle housing, have slot on the fixed head vertical side, in the elbow inserting hole of pressing plate one end, the other end connects the two with bolt.

This bicycle theft-prevention safety lock has been broken the structure that conventional lock shaft and whole tapered end link together, and makes manufacturing process simple, easily.The prominent head that utilizes dead bolt in the tapered end and lock shaft head recess are interlocked, throw off the unlatching of carrying out lock and sealed, rational in infrastructure, reliably, and long service life.Load onto chain on the lock shaft in addition, can carry out dual fail-safe.And after locking, even utilize instrument also can't prize and steal, the burglary insurance performance is fabulous.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the utility model structural representation.

Fig. 2 is a dead bolt enlarged diagram in the utility model.

Fig. 3 is the local enlarged diagram of the utility model when sealed.

Local enlarged diagram when Fig. 4 is the utility model unlatching.

Tapered end among the figure comprises compositions such as lock housing (3), lock core (2), marble pressuring spring, lock core marble, and this part structure is the same with general iron bag lock construction, does not make enumeration at this.Tapered end also comprises dead bolt (6), latch bolt spring (5), presses tongue (15), presses tongue spring (18).The head of lock core has the prominent head of an off-centre (4).It is fastened in the groove (20) of dead bolt (6).Dead bolt (6) head has prominent head (19), and it can fasten with lock shaft (7) head revolution groove; Pressure tongue (15) is arranged and press tongue spring (18) in the place ahead of lock shaft (7) motion, between lock shaft (7) and dead bolt (6), have one to press tongue pin (14).Axle housing has mutually perpendicular through hole on (8), and through-hole diameter slightly than lock shaft (7) more greatly.The left and right fixed head of fixed mount (17,12) is connected with axle housing (8) with lock housing (2) on the tapered end with flat shoulder screw (9) respectively.Have slot on fixed head (17, the 12) vertical side, the elbow of left and right pressing plate (16,11) injects in fixed head (17, the 12) lateral aperture, uses hex screw (13) respectively fixed mount that tapered end and axle housing (8) are housed and bicycle crotch to be fixed then.

When sealed,, pass the spoke space with the parallel hole of lock shaft (7) by axle housing (8), inject tapered end, lock shaft (7) head pushes forward presses tongue (15), presses tongue spring (18) compression, meanwhile, lock shaft (5) upwards pushes the prominent head (19) of dead bolt (6), latch bolt spring (5) compression is after waiting to inject, when the prominent head of dead bolt (19) enters lock shaft (5) revolution groove, because latch bolt spring (5) restoring force, the prominent head of dead bolt just is interlocked with the groove of lock shaft.Extract key, bicycle promptly is lockable.If use instrument, no matter clamp, prize, cut a hole, strike and all can't make lock shaft disengaging tapered end from which direction.When needing, if use chain (10) and fixture bolt together, the safer insurance of bicycle.

During unlatching, key (1) is injected tapered end, toward changeing counterclockwise, the lock core (2) of the eccentric prominent head of band (4) rotates with key (1), prominent head (4) drives dead bolt (6) and upwards carries, and latch bolt spring (5) compression is when treating that the prominent head of dead bolt (19) breaks away from lock shaft (7) groove, the pressure tongue (15) in lock shaft (7) the place ahead is subjected to pressing the effect of tongue spring (18) restoring force, presses tongue (15) to promote lock shaft (7) and breaks away from tapered end.Press tongue (15) owing to press tongue pin (14) to stop with regard to stop motion.At this moment extract lock shaft (7), bicycle is opened, lock shaft (7) is inserted in axle housing (8) upright opening fixing, at this moment can be because of not being subjected to external impacts, and meet accident.

Claims (4)

1, a kind of bicycle theft-prevention safety lock, it comprises by lock housing (3), lock core (2), marble pressuring spring, tapered end, lock shaft (7), fixed mount that lock core marble etc. are formed, it is characterized in that lock shaft (7) and tapered end are separated, tapered end is separately fixed on left and right two fixed mounts with the axle housing (8) that has the through hole that can pass lock shaft (7).

2, bicycle theft-prevention safety lock according to claim 1, it is characterized in that also being equipped with in the tapered end pressure tongue (15), press tongue spring (18), and dead bolt (6), the latch bolt spring (5) of the prominent head of the band of the transmission that matches with lock core (2) (19), the head of lock shaft (7) has a revolution groove that is interlocked with dead bolt (5) prominent (19).

3,, it is characterized in that described lock shaft (7) afterbody is equipped with a chain (10) according to claim 1,2 described bicycle theft-prevention safety locks.

4, according to claim 1,2 described bicycle theft-prevention safety locks, it is characterized in that having slot on the vertical plane of fixed head (17,12) of described composition fixed mount, an end of pressing plate (16,11) has an elbow, and the other end has the hole.

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