CN201433619Y

CN201433619Y - Theftproof lock capable of preventing reaming damage to lock core

Info

Publication number: CN201433619Y
Application number: CN2009200090784U
Authority: CN
Inventors: 林洋
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-17
Filing date: 2009-03-17
Publication date: 2010-03-31
Anticipated expiration: 2019-03-17

Abstract

The utility model discloses a theftproof lock, especially a theftproof lock having an idle type lock core, capable of preventing reaming damage to lock core. The theftproof lock comprises a lock bodycomposed of a lock tube, a lock core and a lock bar; the lock core is mounted in the lock tube; the lock core is a telescopic rotating-bolt lock core, comprises an iron sleeve, a copper sleeve and a copper core, wherein one end of the copper core is formed with a keyhole, and the other end is fixed with the dead bolt; a torsion spring is mounted between the iron sleeve and the copper core and thecopper core is kept to cooperate with the copper sleeve under the operation of the torsion spring. When the lock core of the utility model is reamed by a reamer, the copper core idles along the reamerunder the action of outside force, and because the reamer can only rotate to 90 degrees, it can not damage the lock core; and when the reamer is taken out, the copper core returns to the correct position under the operation of spring, and the theftproof lock can be also be used normally.

Description

A kind of theftproof lock that can prevent that lock core from being twisted bad

Technical field

The utility model relates to a kind of theftproof lock, and especially a kind of have an idle rotation type lock core, can prevent the theftproof lock that lock core is twisted bad.

Background technology

Chinese patent ZL200620148973 discloses the utility model patent of " a kind of theftproof lock of telescopic turning-bolt lock core " by name, its main technical schemes is: a kind of theftproof lock of telescopic turning-bolt lock core, comprise lock body and key, wherein lock body is by the lock pipe, lock core and locking bar constitute, it is the key of P type that described lock pipe is provided with to small part, one end of this key is the opening of internal diameter greater than key, described lock core is telescopic turning-bolt lock core, the keyhole of this lock core is corresponding with described opening, described key to small part is the L type, and this L type part matches with described opening.The advantage of this theftproof lock is: owing to be provided with P type key on the lock pipe, this key is provided with the opening of a convex, and uses L type key, makes keyhole, lock core can reach good hidden effect, allows external tool be difficult to touch, to twist and pry open lock; And lock core structure is inner with the lock pipe by jump ring and wear washer location, and does not use dowel fixes, can further prevent the destruction of violence unlocking tool, and reach idle running protection effect.But in actual use, above-mentioned theftproof lock is usually twisted bad lock core by L type reamer, causes the user to unblank, and must cut locking bar by special tool and just can open lock, brings very big inconvenience to the user.

Summary of the invention

In order to address the above problem, the utility model improves on above-mentioned patent basis, and a kind of theftproof lock that can prevent that lock core from being twisted bad is provided, and avoids occurring lock core and is twisted bad the problem that can't open by reamer.

Technical solutions of the utility model are: a kind of theftproof lock that can prevent that lock core from being twisted bad, comprise lock body, described lock body is made of lock pipe, lock core and locking bar, described lock core is installed in the described lock pipe, have P type groove on the described lock pipe, much larger than the end away from lock core, and to go up and form one on described lock body be the fan-shaped opening on summit with the lock body axle center to this P type groove near the width of lock core one end, and the drift angle of described fan-shaped opening is about 90 degree; Described lock core is telescopic turning-bolt lock core, is followed successively by the iron cover from outside to inside, and copper sheathing and copper core have corresponding pellet shot from a slingshot hole on described copper sheathing and the copper core, and described pellet shot from a slingshot is equipped with spring and pellet shot from a slingshot in the hole, and described iron cover passes through dowel fixes with copper sheathing; Described copper core one end has keyhole, and described keyhole is arranged in the described lock pipe, and corresponding with described P type groove, the other end of described copper core and described dead bolt are affixed; Between described iron cover and the described copper core torsion spring is housed, described copper core orders about down at described torsion spring and keeps mated condition with described copper sheathing.

The another kind of technical scheme of the utility model is: a kind of theftproof lock that can prevent that lock core from being twisted bad, comprise lock body, described lock body is made of lock pipe, lock core and locking bar, described lock core is installed in the described lock pipe, and described lock core is telescopic turning-bolt lock core, is followed successively by the iron cover from outside to inside, copper sheathing and copper core, have corresponding pellet shot from a slingshot hole on described copper sheathing and the described copper core, described pellet shot from a slingshot is equipped with spring and pellet shot from a slingshot in the hole, and described iron cover passes through dowel fixes with described copper sheathing; Described copper core one end has keyhole, and the other end of described copper core and described dead bolt are affixed; Have the right angle sector notch at described lock pipe near on the end face of keyhole one side, described right angle sector notch overlaps with described keyhole, key is inserted to revolve behind the described keyhole and turn 90 degrees, between described iron cover and the described copper core torsion spring is housed, described copper core orders about down at described torsion spring and keeps mated condition with described copper sheathing.

The utility model principle is, the lock core of existing theftproof lock is under the effect of external force, keyhole can produce annular or vertical shift in the lock pipe, make the key of lock itself also can put to enter, and seeks correct key eye position to the user and brings very big trouble the utility model.Adopt torsion spring to make described copper core and described copper sheathing keep dynamic mated condition, and do not use dowel fixes, when the thief twists lock core with reamer, the copper core is idle running thereupon under the effect of external force, because the restriction of P type key or right angle sector notch, reamer can only turn 90 degrees, can't destroy lock core, after the thief took out reamer, the copper core was got back to the tram again under the torsion spring effect, so theftproof lock can normally use again.

The beneficial effects of the utility model are: the utility model is rational in infrastructure, and is easy to use, can effectively prevent the violence damage of unlocking tool to theftproof lock, and reach better anti-theft effect.

Description of drawings:

The utility model is described in further detail below in conjunction with the drawings and specific embodiments:

Fig. 1 is the front view of the utility model embodiment one,

Fig. 2 be the utility model embodiment one partly cut open figure,

Fig. 3 is the sectional drawing of the utility model lock core,

Fig. 4 be the utility model embodiment two partly cut open figure,

Fig. 5 is the front view of the utility model embodiment two keyholes.

The specific embodiment:

Embodiment one

Referring to Fig. 1,2,3, a kind of theftproof lock that can prevent that lock core from being twisted bad, comprise lock body, described lock body is made of lock pipe 10, lock core 11 and locking bar 12, lock core 11 is installed in the lock pipe 10, has P type groove 13 on the lock pipe 10, and the width of P type groove 13 close lock core 11 1 ends is much larger than the end away from lock core 11, and forming one on described lock body is the fan-shaped opening on summit with the lock body axle center, and the drift angle of described fan-shaped opening is about 90 degree.Described lock core 11 is telescopic turning-bolt lock core, is followed successively by iron cover 1 from outside to inside, and copper sheathing 4 and copper core 6 have corresponding pellet shot from a slingshot hole 9 on described copper sheathing 4 and the copper core 6, in the described pellet shot from a slingshot hole 9 spring and pellet shot from a slingshot are housed, and described iron cover 1 is fixing by pin 3 with copper sheathing 4.Described copper core 6 one ends have keyhole, and described keyhole is arranged in the described lock pipe 10, and is corresponding with P type groove 13, and the other end of copper core 6 and dead bolt 8 are affixed; Between iron cover 1 and the copper core 6 torsion spring 5 is housed, copper core 6 orders about down and copper sheathing 4 maintenance mated condition at torsion spring 5.

The operating principle of lock core 11 is to have an oblique chute on copper core 6 peripheries, described copper sheathing 4 inner headed faces are provided with a projection corresponding with described chute, or boring on described copper sheathing 4, an inwardly outstanding pin is installed, described pin head stretches in the described chute, when described copper core 6 rotated in described copper sheathing 4 vertically, described projection or pin slided in described chute, ordered about described copper core 6 and dead bolt 8 and protracted or bounce back.

Embodiment one need use to the key 15 of small part as the L type, is applicable to the key that adopts cross or flat sword type.

Embodiment two

Referring to Fig. 4,5, a kind of theftproof lock that can prevent that lock core from being twisted bad, comprise lock body, described lock body is made of lock pipe 10, lock core 11 and locking bar 12, lock core 11 is installed in the lock pipe 10, has right angle sector notch 14 at lock pipe 10 near on the end face of keyhole one side, and described right angle sector notch 14 overlaps with described keyhole, key is inserted can only revolve behind the described keyhole to turn 90 degrees, remainder is identical with embodiment one.

When normal the use, the revolving force the when torsion of torsion spring 5 is unblanked greater than the user does not influence and unblanks; And when the thief twists lock core 11 with the reamer violence, external force is greater than the torsion of torsion spring 5, torsion spring 5 is subjected to force compresses, copper core 6 is idle running thereupon under the effect of external force, because the restriction of P type key 13 or right angle sector notch 14 is arranged, reamer can only turn 90 degrees, can't revolve three-sixth turn and destroy lock core 11, after the thief took out reamer, copper core 6 was got back to the position that cooperates with copper sheathing 4 again under torsion spring 5 effects, so theftproof lock can normally use again.

Claims

1. theftproof lock that can prevent that lock core from being twisted bad, comprise lock body, described lock body is made of lock pipe, lock core and locking bar, described lock core is installed in the described lock pipe, have P type groove on the described lock pipe, the width of close lock core one end of this P type groove is much larger than the end away from lock core, and one of formation is the fan-shaped opening on summit with the lock body axle center on described lock body, and the drift angle of described fan-shaped opening is about 90 degree; Described lock core is telescopic turning-bolt lock core, is followed successively by the iron cover from outside to inside, and copper sheathing and copper core have corresponding pellet shot from a slingshot hole on described copper sheathing and the copper core, and described pellet shot from a slingshot is equipped with spring and pellet shot from a slingshot in the hole, and described iron cover passes through dowel fixes with described copper sheathing; Described copper core one end has keyhole, and described keyhole is arranged in the described lock pipe, and corresponding with described P type groove, the other end and the dead bolt of described copper core are affixed; It is characterized in that between described iron cover and the described copper core torsion spring being housed, described copper core orders about down at described torsion spring and keeps mated condition with described copper sheathing.

2. theftproof lock that can prevent that lock core from being twisted bad, comprise lock body, described lock body is made of lock pipe, lock core and locking bar, described lock core is installed in the described lock pipe, and described lock core is telescopic turning-bolt lock core, is followed successively by the iron cover from outside to inside, copper sheathing and copper core, have corresponding pellet shot from a slingshot hole on described copper sheathing and the described copper core, described pellet shot from a slingshot is equipped with spring and pellet shot from a slingshot in the hole, and described iron cover passes through dowel fixes with described copper sheathing; Described copper core one end has keyhole, and the other end and dead bolt are affixed; It is characterized in that at described lock pipe near having the right angle sector notch on the end face of keyhole one side, described right angle sector notch overlaps with described keyhole, key is inserted to revolve behind the described keyhole to turn 90 degrees; Between described iron cover and the described copper core torsion spring is housed, described copper core orders about down at described torsion spring and keeps mated condition with described copper sheathing.