CN2256911Y

CN2256911Y - Anti-picking lock

Info

Publication number: CN2256911Y
Application number: CN 96203071
Authority: CN
Inventors: 邱顺明
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-13
Filing date: 1996-02-13
Publication date: 1997-06-25
Anticipated expiration: 2006-02-13

Abstract

The utility model relates to a pickproof lock core which is formed by matching a lock core cylinder, a key and an exposed steel sheath which is sheathed at the front end of the lock core cylinder, wherein the center of the steel sheath is provided with a cross-shaped locking hole corresponding to a lock core hole, and the locking hole forms a stopping block. The steel sheath and the lock core cylinder are connected into a whole by pins. The middle segment of the key is provided with a groove of which the width is slightly larger than that of the locking hole of the steel sheath. Because the exposed surface of the lock core cylinder is protected by the steel sheath which can prevent the lock core cylinder from being damaged. Because a user only uses the key of which the middle segment is provided with the groove to not touch the stopping block of the locking hole of the steel sheath for locking a lock, the utility model ensures the safety of the lock.

Description

Anti-picking lock

The utility model relates to a kind of Anti-picking lock, belongs to a kind of lockset accessory.

Existing lockset generally is core made of copper, and directly exposedly also very easily lockset is destroyed with electric drill by the evildoer even core has extremely complicated structure outside, so safety inadequately.

The purpose of this utility model is that a kind of Anti-picking lock will be provided, and it can avoid core directly to destroy from the external world, thereby strengthens anti-theft feature, reaches the purpose of safe handling.

The purpose of this utility model is achieved in that this Anti-picking lock is by core tube, key be placed in steel bushing that core tube front end exposes and cooperate and form, the steel bushing center is provided with and the corresponding cross lockhole of lock core hole, this lockhole forms the stopper that prevents turn, steel bushing and core tube fuse with pin, the key stage casing is provided with groove, the little width greater than the steel bushing lockhole of recess width.

Advantage of the present utility model is:

1, because of core tube exposed face, protected by steel bushing, the steel bushing material is hard, can exempt from the ruffian and directly destroy.

2, because of after key penetrates the core tube, have only the key that utilizes the groove that the middle part has, just can not be subjected to blocking of steel bushing stopper, in lock core hole, rotate, open lockset, thereby must use original key to unblank, anti-theft feature further tightens security.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof:

Fig. 1 is the utility model three-dimensional exploded view;

Fig. 2 is the utility model core tube and steel bushing combination back stereogram;

Fig. 3 is the utility model combination back sectional view;

Fig. 4 is the B-B section enlarged diagram of Fig. 3.

Describe in detail below in conjunction with accompanying drawing:

With reference to Fig. 1,2, this Anti-picking lock is matched by core tube 1 and key 3 and forms, it is characterized in that front end at core tube 1, cover unification steel bushing 2, be provided with a cross lockhole 20 in the middle of the steel bushing 2, lockhole 20 is corresponding with core tube 1 middle set lock core hole 10, and formation prevents the stopper 200 of turn, steel bushing 2 upper limbs, be provided with one the perforation 21, pin A pass the perforation 21 and core tube 1 on the perforation 21 corresponding holes 11, steel bushing 2 and core tube 1 are fused, key 3 can be inserted in the combination of steel bushing 2 and core tube 1, and is provided with groove 30, the little width greater than steel bushing 2 lockholes 20 of these groove 30 width in the stage casing.

With reference to Fig. 3,4, when opening lockset, the lockhole 20 that key 3 is passed steel bushing 2 enters the lock core hole 10 of core tube 1, the little width of groove 30 width because of key 3 stage casings greater than steel bushing 2 lockholes 20, make the groove 30 of key 3 just in time stride across the interior outer rim of lockhole 20, when turn key 3 drives lock core hole 10 rotations, can not run into steel bushing 2 lockholes 20 formed stoppers 200, and lockset is opened, realized the purpose that necessary use original key just can be unblanked, and when unblanking key unlocking, must be subjected to stopping of stopper 200 with other, can't turn lock core hole 10, lockset can't be opened.

Claims

1, a kind of Anti-picking lock, match by core tube (1) and key (3) and to form, it is characterized in that front end in core tube (1), cover unification steel bushing (2), be provided with a cross lockhole (20) in the middle of the steel bushing (2), lockhole (20) is corresponding with the middle set lock core hole (10) of core tube (1), and formation prevents the stopper 200 of turn), steel bushing (2) upper limb, be provided with a perforation (21), pin A passes perforation (21) and enters last and perforation (21) corresponding hole (11) with core tube (1), steel bushing (2) and core tube 1 are fused, key (3) can be inserted in the combination of steel bushing (2) and core tube (1), and is provided with groove (30), the little width greater than steel bushing (2) lockhole (20) of this groove (30) width in the stage casing.