CN2440090Y

CN2440090Y - Double-unlocking anti-theft lock

Info

Publication number: CN2440090Y
Application number: CN 00247600
Authority: CN
Inventors: 王有传
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-14
Filing date: 2000-09-14
Publication date: 2001-07-25
Anticipated expiration: 2010-09-14

Abstract

The utility model discloses a mechanical anti-theft lock, which mainly solves the problem that the existing anti-theft lock can not prevent being opened by a universal key. The utility model is characterized in that a second lock core groove vertical to a lock core groove is arranged on the inner end surface of a lock core, and the second lock core groove is communicated with the lock core groove. A lock plank groove communicated with the second lock core groove is arranged on the inner end surface of a lock plank, an elastic blocking sheet of which the opening is protruded outward is fixed on an elastic blocking ring along the center of the elastic blocking ring, and the elastic blocking sheet is inserted into the second lock core groove and the lock plank groove. The lock can be opened only when the elastic blocking sheet is opened firstly and the key is turned. The problem that the lock can be opened by the universal key is effectively solved.

Description

A kind of dual unlatching theftproof lock

The utility model relates to a kind of mechanical anti-theft lock.

Mechanical lock is owing to have durability, stability and do not have advantage such as misoperation, thereby obtains extensively should having, and becomes the lockset of tradition use.In order to improve the theftproof performance of lock; numerous technician improve the lockset of the easiest round thief destruction successively; for example the single cog lock core changes cross four sides tooth lock core into; set up protective cover, anti-drilling sheet etc. at the end face of tapered end; these improvement make tapered end have anti-drilling, pick-proof, anti-advantage such as draw, but can not solve the problem of existing theftproof lock with unlocked by universal key.

The purpose of this utility model is to provide a kind of theftproof lock that can prevent unlocked by universal key.

For achieving the above object, a kind of dual unlatching theftproof lock of the present utility model, comprise lock head component, dead bolt assembly and poke rod, lock head component comprises the lock embryo, in the centre bore of lock embryo the lock core that turns and have keyhole is housed, marble spring and lock embryo pellet shot from a slingshot are housed in the lock embryo, the other end of lock embryo pellet shot from a slingshot inserts in the lock core and with lock core marble and contacts, the other end of lock core marble is exposed in the keyhole outward, the inner face of lock core has a lock core groove, one end of poke rod is provided with a breach, this end is inserted in the lock core groove, and poke rod is fixed on the lock core by circlip, the other end of poke rod is connected with the dead bolt assembly, on the lock core inner face, also have the second lock core groove vertical with the lock core groove and that be communicated with, have the lock embryo groove that is connected with the second lock core groove at lock embryo inner face, on circlip, fix one along its center and pass the overhanging elastic barrier sheet of its opening, the elastic barrier sheet is inserted in the second lock core groove and the lock embryo groove, the elastic barrier sheet corresponding to the position of keyhole to the bending of keyhole direction.

As to improvement of the present utility model; intrinsic protective cover is inserted in the outer end of lock embryo; protective cover is provided with and the corresponding cover of keyhole hole; one anti-drilling sheet is housed in the gap of lock core and protective cover inner face; the center of anti-drilling sheet is provided with and keyhole, the corresponding film perforation in cover hole; an affixed sleeve on the external cylindrical surface of protective cover and lock embryo, sleeve have a groove that communicates with lock embryo groove.

As the utility model is further improved, the position near the dead bolt assembly on the poke rod is provided with a block.

The utility model is owing to adopt said structure, on the lock core inner face, also have the second lock core groove vertical with the lock core groove and that be communicated with, have the lock embryo groove that is connected with the second lock core groove at lock embryo inner face, on circlip, fix one along its center and pass the overhanging elastic barrier sheet of its opening, the elastic barrier sheet is inserted in the second lock core groove and the lock embryo groove, the elastic barrier sheet corresponding to the position of keyhole to the bending of keyhole direction, have only when unblanking with key and at first push the elastic barrier sheet open, key again, lock could be opened, can effectively solve the problem of offender like this, make the anti-theft effect of theftproof lock more perfect with the unlocked by universal key lock.Position near the dead bolt assembly on the poke rod is provided with a block, has stopped that the offender prizes poke rod down and then stirs the dead bolt assembly lock is opened from lock core with tool used in crime, thereby the anti-theft effect of theftproof lock is further strengthened.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the sectional view of the utility model embodiment;

Fig. 2 is that the A-A of the utility model embodiment shown in Figure 1 is to sectional view;

Fig. 3 is the lock core sectional view of the utility model embodiment;

Fig. 4 is the lock core right view of the utility model embodiment;

Fig. 5 is the elastic barrier sheet schematic diagram of the utility model embodiment;

Fig. 6 is the poke rod schematic diagram of the utility model embodiment;

Fig. 7 is the opening sectional view of the utility model embodiment.

Extremely shown in Figure 6 as Fig. 1, a kind of dual unlatching theftproof lock comprises lock head component, dead bolt assembly 9 and poke rod 7, lock head component comprises lock embryo 1, in the centre bore of lock embryo 1 lock core 5 that turns and have keyhole 17 is housed, marble spring 18 and lock embryo pellet shot from a slingshot 19 are housed in the lock embryo 1, the other end of lock embryo pellet shot from a slingshot 19 inserts in the lock core 5 and with lock core marble 20 and contacts, the other end of lock core marble 20 is exposed at outward in the keyhole 17, the inner face of lock core 5 has a lock core groove 11, one end of poke rod 7 is provided with a breach 14, this end is inserted in the lock core groove 11, and poke rod 7 is fixed on the lock core 5 by circlip 6, the other end of poke rod 7 is connected with dead bolt assembly 9, on lock core 5 inner faces, also have and the lock core groove 11 vertical second lock core grooves 12 that also are communicated with, have the lock embryo groove 13 that is connected with the second lock core groove 12 at lock embryo 1 inner face, on circlip 6, fix one along its center and pass the overhanging elastic barrier sheet 10 of its opening, elastic barrier sheet 10 is inserted in the second lock core groove 12 and the lock embryo groove 13, elastic barrier sheet 10 corresponding to the position of keyhole 17 to keyhole 17 direction bendings.Intrinsic protective cover 3 is inserted in the outer end of lock embryo 1, and protective cover 3 is provided with and keyhole 17 corresponding cover holes 21.In the gap of lock core 5 and protective cover 3 inner faces an anti-drilling sheet 4 is housed, the center of anti-drilling sheet 4 is provided with and keyhole 17, cover hole 21 corresponding film perforations 22.An affixed sleeve 2 on the external cylindrical surface of protective cover 3 and lock embryo 1, sleeve 2 have a groove 23 that communicates with lock embryo groove 13.Position near dead bolt assembly 9 on the poke rod 7 is provided with a block 16.

As shown in Figure 1, lock core 5 is fixed on the lock embryo 1 by lock embryo pellet shot from a slingshot 19, and lock core 5 can not be rotated, and is inserted into the elastic barrier sheet 10 on the second lock core groove 12 and the lock embryo groove 13 because stopping of lock embryo groove 13 also makes lock core 5 not rotate.As shown in Figure 7, have only elastic force that key bit overcomes elastic barrier sheet 10 that barrier sheet 10 is released lock embryo grooves 13 and key bit and will lock embryo pellet shot from a slingshot 19 by lock core marble 20 and be pushed into and lock in the embryo 1, lock could be opened.

Claims

1. dual unlatching theftproof lock, comprise lock head component, dead bolt assembly (9) and poke rod (7), lock head component comprises lock embryo (1), the lock core (5) that turns and have keyhole (17) is housed in the centre bore of lock embryo (1), marble spring (18) and lock embryo pellet shot from a slingshot (19) are housed in the lock embryo (1), the other end of lock embryo pellet shot from a slingshot (19) inserts in the lock core (5) and with lock core marble (20) and contacts, the other end of lock core marble (20) is exposed at outward in the keyhole (17), the inner face of lock core (5) has a lock core groove (11), one end of poke rod (7) is provided with a breach (14), this end is inserted in the lock core groove (11), and poke rod (7) is fixed on the lock core (5) by circlip (6), the other end of poke rod (7) is connected with dead bolt assembly (9), it is characterized in that: on lock core (5) inner face, also have the second lock core groove (12) vertical with lock core groove (11) and that be communicated with, have the lock embryo groove (13) that is connected with the second lock core groove (12) at lock embryo (1) inner face, on circlip (6), fix one along its center and pass the overhanging elastic barrier sheet (10) of its opening, elastic barrier sheet (10) is inserted in the second lock core groove (12) and lock embryo groove (13), elastic barrier sheet (10) corresponding to the position of keyhole (17) to keyhole (17) direction bending.

2. dual unlatching theftproof lock as claimed in claim 1 is characterized in that: intrinsic protective cover (3) is inserted in the outer end of lock embryo (1), and protective cover (3) is provided with and keyhole (17) corresponding cover hole (21).

3. dual unlatching theftproof lock as claimed in claim 2; it is characterized in that: in the gap of lock core (5) and protective cover (3) inner face an anti-drilling sheet (4) is housed, the center of anti-drilling sheet (4) is provided with and keyhole (17), the cover corresponding film perforation in hole (21) (22).

4. dual unlatching theftproof lock as claimed in claim 3 is characterized in that: an affixed sleeve (2) on the external cylindrical surface of protective cover (3) and lock embryo (1), sleeve (2) have a groove (23) that communicates with lock embryo groove (13).

5. as one of them described dual unlatching theftproof lock of claim 1 to 4, it is characterized in that: the position that poke rod (7) is gone up near dead bolt assembly (9) is provided with a block (16).