CN202706702U

CN202706702U - Serial-connection type theft-proof lock head

Info

Publication number: CN202706702U
Application number: CN 201220383224
Authority: CN
Inventors: 张卫
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-04
Filing date: 2012-08-04
Publication date: 2013-01-30
Anticipated expiration: 2022-08-04

Abstract

The utility model relates to a serial-connection type theft-proof lock head capable of arranging a plurality of movable lock cores in a serial connection manner in a lock cylinder, so as to improve the theft-proof performance of the lock head. Upper lock cores and lower lock cores are arranged in a central hole of the lock cylinder in a serial connection manner and are matched with dowels and positioned through limiting grooves. A backstop groove is arranged on the bottom surfaces of the upper lock cores along the periphery of a keyhole, and a spring and a backstop column are arranged on the top surfaces of the lower lock cores corresponding to the position of the backstop groove. A theft-proof hole is arranged at the bottom end of the keyhole of the lower lock cores, and a transmission piece is connected to the lower ends of the lower lock cores. When the lock is opened normally, a key is completely inserted into the keyhole of the upper lock cores and the lower lock cores and is turned, then the lock can be opened. When the lock is opened abnormally, the lower lock cores cannot be driven to turn by turning the upper lock cores. When the lower lock cores are directly turned, the upper lock cores turns along with the lower lock cores due to the action of the backstop column and the backstop groove, and since no point of stress exists in the theft-proof hole of the lower lock cores and a theft tool inserted into the lower lock cores can occupy partial space of the keyhole, the difficulty in thievishly opening the lock is increased.

Description

The tandem anti-theft lock end

Technical field

The utility model relates to a kind of anti-theft lock end, especially can several movable lock cores be set by series connection in lock cylinder, thereby improve the tandem anti-theft lock end of tapered end theftproof performance.

Background technology

At present, only be provided with the lock core of an activity in its lock cylinder of known anti-theft lock end, and the method for raising tapered end theftproof performance is exactly the structure complicated that makes lock core and key, and has therefore also improved the difficulty of processing.

Summary of the invention

In order to overcome existing anti-theft lock end complex structure, the deficiency that difficulty of processing is large, the utility model provide a kind of tandem anti-theft lock end, and this tandem anti-theft lock end can be connected in lock cylinder several movable lock cores are set, by the difficulty of increasing pirate of the open, thus the theftproof performance of raising tapered end.

The technical scheme that its technical problem that solves the utility model adopts is: the utility model comprises lock cylinder, pin, lower lock core, driver blade, upper lock core, keyhole, antitheft hole, stopper slot, back stop slot, spring, retaining post and installing hole.Lock cylinder is tubular construction, be provided with pin perpendicular to the lock cylinder centre bore at the stack shell of lock cylinder, upper lock core and lower lock core are cylindrical structural, keyhole is opened in the axial location of upper lock core and lower lock core, on the cylinder of upper lock core and lower lock core, all offer stopper slot, the series connection of upper lock core and lower lock core is arranged in the centre bore of lock cylinder, upper lock core and the lower lock core stopper slot by separately respectively with lock cylinder on corresponding pin cooperate the location.Periphery in the bottom surface of upper lock core along keyhole offers back stop slot, back stop slot is the ratchet slot structure of annular, offer installing hole at the end face of lower lock core corresponding to the position of back stop slot, in installing hole, be provided with spring and retaining post, the retaining post inserts in the back stop slot under the effect of spring, and retaining post and back stop slot consist of directional clutch jointly.Keyhole bottom at lower lock core offers antitheft hole, and antitheft hole is the turbination pore structure.Driver blade is connected to the lower end of lower lock core.During normal unlatching lockset, key is inserted fully in the keyhole of upper lock core and lower lock core, rotate key and can drive simultaneously upper lock core and lower lock core, and lower lock core will be opened lockset by driver blade.In the process of unnormal unlocking lockset, when the pirate of the open instrument directly rotated upper lock core, because the effect of directional clutch, upper lock core can not drive lower lock core and rotate.When the pirate of the open instrument enters and when directly rotating lower lock core from the keyhole of upper lock core, because the effect of directional clutch, upper lock core will rotate with lower lock core, but, owing to do not have stress point in the antitheft hole of lower lock core, and the pirate of the open instrument that inserts lower lock core can take again the segment space of keyhole, so the difficulty of pirate of the open will strengthen.

The beneficial effects of the utility model are, series connection arranges several movable lock cores in lock cylinder, by strengthening the difficulty of pirate of the open, thereby improve the theftproof performance of tapered end.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is front view of the present utility model.

Fig. 2 is the top view of Fig. 1.

Fig. 3 is the A-A profile of Fig. 1.

Fig. 4 is the B-B profile of Fig. 2.

Fig. 5 is the C-C sectional drawing of Fig. 4.

Fig. 6 is the D-D sectional drawing of Fig. 4.

Fig. 7 is the expanded view of back stop slot.

Among the figure: 1. lock cylinder.2. pin.3. descend lock core.4. driver blade.5. upper lock core.6. keyhole.7. antitheft hole.8. stopper slot.9. back stop slot.10. spring.11. retaining post.12. installing hole.

The specific embodiment

In Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, lock cylinder 1 is tubular construction, be provided with pin 2 perpendicular to lock cylinder 1 centre bore at the stack shell of lock cylinder 1, upper lock core 5 and lower lock core 3 are cylindrical structural, keyhole 6 is opened in the axial location of upper lock core 5 and lower lock core 3, on the cylinder of upper lock core 5 and lower lock core 3, all offer stopper slot 8,3 series connection of upper lock core 5 and lower lock core are arranged in the centre bore of lock cylinder 1, upper lock core 5 and lower lock core 3 stopper slot 8 by separately respectively with lock cylinder 1 on corresponding pin 2 cooperate the location.Periphery in the bottom surface of upper lock core 5 along keyhole 6 offers back stop slot 9, back stop slot 9 is the ratchet slot structure of annular, offer installing hole 12 at the end face of lower lock core 3 corresponding to the position of back stop slot 9, in installing hole 12, be provided with spring 10 and retaining post 11, retaining post 11 inserts under the effect of spring 10 in the back stop slot 9, retaining post 11 and back stop slot 9 common formation directional clutch.Keyhole 6 bottoms at lower lock core 3 offer antitheft hole 7, and antitheft hole 7 is the turbination pore structure.Driver blade 4 is connected to the lower end of lower lock core 3.

In Fig. 2, Fig. 3, Fig. 4, when normally opening lockset, key is inserted fully in the keyhole 6 of upper lock core 5 and lower lock core 3, rotate key and can drive simultaneously upper lock core 5 and lower lock core 3, and lower lock core 3 will be opened lockset by driver blade 4.In the process of unnormal unlocking lockset, when the pirate of the open instrument directly rotated upper lock core 5, because the effect of directional clutch, upper lock core 5 can not drive lower lock core 3 and rotate.When the pirate of the open instrument enters and when directly rotating lower lock core 3 from the keyhole 6 of upper lock core 5, because the effect of directional clutch, upper lock core 5 will rotate with lower lock core 3, but, owing to do not have stress point in the antitheft hole 7 of lower lock core 3, and the pirate of the open instrument that inserts lower lock core 3 can take again the segment space of keyhole 6, so the difficulty of pirate of the open will strengthen.

Claims

1. tandem anti-theft lock end, it comprises lock cylinder, pin, lower lock core, driver blade, upper lock core, keyhole, antitheft hole, stopper slot, back stop slot, spring, retaining post and installing hole, it is characterized in that: lock cylinder is tubular construction, be provided with pin perpendicular to the lock cylinder centre bore at the stack shell of lock cylinder, upper lock core and lower lock core are cylindrical structural, keyhole is opened in the axial location of upper lock core and lower lock core, on the cylinder of upper lock core and lower lock core, all offer stopper slot, upper lock core and the series connection of lower lock core are arranged in the centre bore of lock cylinder, upper lock core and the lower lock core stopper slot by separately respectively with lock cylinder on corresponding pin cooperate the location, periphery in the bottom surface of upper lock core along keyhole offers back stop slot, back stop slot is the ratchet slot structure of annular, offer installing hole at the end face of lower lock core corresponding to the position of back stop slot, in installing hole, be provided with spring and retaining post, the retaining post inserts in the back stop slot under the effect of spring, retaining post and back stop slot consist of directional clutch jointly, keyhole bottom at lower lock core offers antitheft hole, antitheft hole is the turbination pore structure, and driver blade is connected to the lower end of lower lock core.

2. tandem anti-theft lock end according to claim 1 is characterized in that: when directly rotating upper lock core, because the effect of directional clutch, upper lock core can not drive lower lock core and rotate.

3. tandem anti-theft lock end according to claim 1 is characterized in that: when directly rotating lower lock core, because the effect of directional clutch, upper lock core will rotate with lower lock core.