CN2200036Y

CN2200036Y - Theft-proof lock with alarm device for bicycle

Info

Publication number: CN2200036Y
Application number: CN 94220109
Authority: CN
Inventors: 王文义
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-27
Filing date: 1994-08-27
Publication date: 1995-06-07
Anticipated expiration: 2004-08-27

Abstract

The utility model relates to an anti-theft alarm lock for a bicycle, comprising an outer shell, a lock body, a lock core, a common lock tongue, a lock ring, a tension spring, an alarm sounding device. An antitheft lock ring is connected with the common lock ring in parallel. Except that the common lock tongue is arranged, a shifting fork linked with the lock core, and an anti-theft lock tongue on the head part of the shifting fork are also arranged. An elastic touch bead is arranged in the common lock ring sleeve. A wedge-shaped bounce plate is arranged on a baffle plate. One switch of the alarm sounding device is arranged in the elastic touch bead, and the other switch of the alarm sounding device is arranged on the lock core. The anti-theft alarm lock for a bicycle has good anti-theft performance. After the anti-theft alarm lock for a bicycle is opened in a destructive mode, the lock ring of the anti-theft alarm lock for a bicycle can be automatically locked, a larcener can not immediately ride the bicycle when the anti-theft alarm lock for a bicycle alarms, and the anti-theft alarm lock for a bicycle plays a favorable anti-theft function.

Description

Theft-proof lock with alarm device for bicycle

The utility model relates to a kind of burglar alarm bicycle lock.

Bicycle lock theftproof performance in using at present is very poor, is easy to be prized, and is difficult for being found behind the sled.Chinese patent CN88212087U and CN2032229U disclose a kind of burglar alarm bicycle lock, and this kind lock has increased burglar alarm, are pried open but this kind often is locked in when reporting to the police lock, and the thief still can ride away car.

It is a kind of good in the pick-proof performance that the purpose of this utility model is to provide, in case lock is pried open perhaps otherwise destructive unlatching, the burglar alarm bicycle lock that can add a burglary insurance device automatically and report to the police simultaneously.

The utility model comprises shell, lock body, lock core, common dead bolt, lock ring, extension spring, warning acoustical generator, it is characterized in that being connected with an antitheft lock ring side by side with common lock ring, on the antitheft lock ring spring is arranged, the cross section of the inner one section lock ring of antitheft lock ring lacks shape for circle, and all there is locking notch at the two ends of this section lock ring; Between antitheft lock ring and the common lock ring dividing plate is arranged; Except that being provided with common dead bolt, also be provided with the shift fork that links with lock core on the lock core, the antitheft lock ring top of this shift fork head is provided with theft-proof bolt, and shift fork is the antitheft lock ring of lockable both, can stir theft-proof bolt again; There is an elasticity to bump pearl in the lock ring sleeve of housing; Be provided with the wedge diving board at common lock ring by on the dividing plate of extension spring afterbody, antitheft lock ring head has and the corresponding notch of wedge diving board; Be in series with two switches in the warning sounder circuit, a switch is located at elasticity and is bumped in the pearl, and another switch is located on the lock core, and the electric switch that elasticity is bumped in the pearl is normally closed, and the electric switch on the lock core is for often opening.

The utility model theftproof performance is good, after the unlatching of destroyed property, can automatic locking on antitheft lock ring, the thief can not be ridden away car when reporting to the police immediately, played good antitheft effect.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the structural representation of the utility model common lock layer.

Fig. 2 is the structural representation of the utility model theftproof lock layer.

Fig. 3 is the structural representation of the utility model theft-proof bolt and shift fork.

Fig. 4 is the structural representation that the utility model lock ring sleeve position wedge diving board and elasticity are bumped pearl.

(with reference to accompanying drawing) the utility model comprises shell (7), lock body (1), lock core (2), common dead bolt (4), lock ring (8), extension spring (9), warning acoustical generator (5), the utility model and common lock ring are provided with an antitheft lock ring (13) side by side, spring (12) is arranged on the antitheft lock ring (13), antitheft lock ring lacks shape by the cross section of one section of lining for circle, and all there is locking notch at the two ends of this section lock ring; Dividing plate (6) is arranged between antitheft lock ring and the common lock ring; Lock core (2) is gone up except that being connected with common dead bolt (4), also be provided with shift fork (3) with the lock core interlock, the antitheft lock ring top of this shift fork head is provided with theft-proof bolt (14), under common lock ring opening, the antitheft lock ring of shift fork (3) lockable (13), in the time of on the theftproof lock ring lock, shift fork can be stirred theft-proof bolt (14) again, and theftproof lock is opened; The common lock ring of this lock is provided with wedge diving board (11) by the dividing plate (6) of extension spring (9) root, antitheft lock ring head has and the corresponding notch of wedge diving board, this notch is the inclined-plane by one side of lining, and when theftproof lock was not locked, this wedge diving board was carved the head position and is in this notch; Have an elasticity to bump pearl (10) in the lock ring sleeve of housing, when on the common lock ring lock, common lock ring head just in time withstands elasticity and bumps pearl (10), and hand hay cutter wall a kind of farm tools of head is lived wedge diving board (11), and the theftproof lock ring lock firmly can not spued; Be in series with two switches in warning acoustical generator (5) circuit, a switch is connected to elasticity and bumps in the pearl (10), and another switch (15) connects on the lock core (2), and the switch that elasticity is bumped in the pearl (10) is normally closed, and the switch on the lock core (15) is for often opening.

The utility model course of work is as follows: when lock is opened, common lock ring and antitheft lock ring all are in opening, and shift fork (3) pins antitheft lock ring (13), and it can not ejected, alarm switch (15) on the lock core (2) disconnects, and the switch that elasticity is bumped in the pearl (10) is in closure; When lock is locked, dead bolt (4) pins common lock ring (13), lock core (2) moves on to outside the breach of antitheft lock ring (13) shift fork after rotating, decontrol antitheft lock ring (13), switch closure on the while lock core (2), common lock ring head pushes down wedge diving board (11) and elasticity is bumped pearl (10), and the switch that elasticity is bumped in the pearl (10) also is in disconnection, and the antitheft lock ring of wedge diving board asphyxia by external pressure on the chest and abdomen can not spue it.When the people pries open lock, after common lock ring (8) withdraws from, unclamp elasticity and bump pearl (10), make elasticity bump switch closure on the pearl, two switches of alarm all are in closure state, alarm equipment alarm, antitheft lock ring (13) loses the extruding of wedge diving board simultaneously, pushed by spring (12) and spue, theft-proof bolt (14) pins antitheft lock ring, and this moment as no key then must be pried open theftproof lock again and car can be ridden away.After theftproof lock pins, as opening theftproof lock, only need with key rotation lock core (2), shift fork (3) is with theft-proof bolt (14) jack-up, with handle theftproof lock loopback position.

Claims

1, a kind of burglar alarm bicycle lock, comprise shell, lock body, lock core, common dead bolt, lock ring, extension spring, warning acoustical generator, it is characterized in that being connected with an antitheft lock ring side by side with common lock ring, on the antitheft lock ring spring is arranged, the cross section of the inner one section lock ring of antitheft lock ring lacks shape for circle, and all there is locking notch at the two ends of this section lock ring; Between antitheft lock ring and the common lock ring dividing plate is arranged; Except that being provided with common dead bolt, also be provided with the shift fork that links with lock core on the lock core, the antitheft lock ring top of this shift fork head is provided with theft-proof bolt; There is an elasticity to bump pearl in the lock ring sleeve of housing; Be provided with the wedge diving board at common lock ring by on the dividing plate of extension spring afterbody, antitheft lock ring head has and the corresponding notch of wedge diving board; Be in series with two switches in the warning sounder circuit, a switch is located at elasticity and is bumped in the pearl, and another switch is located on the lock core.

2, burglar alarm bicycle lock as claimed in claim 1 is characterized in that the electric switch that described elasticity is bumped in the pearl is normally closed, and the electric switch on the lock core is for often opening.