CN101285354A

CN101285354A - Anti-theft lock

Info

Publication number: CN101285354A
Application number: CNA2008100736062A
Authority: CN
Inventors: 黄世明
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-05
Filing date: 2008-06-05
Publication date: 2008-10-15
Anticipated expiration: 2028-06-05
Also published as: CN101285354B

Abstract

The invention relates to a burglarproof lock, comprising a lock shell, a lock core and a matched key, wherein cylinder holes provided with cylinders are arranged inside the lock core and the lock shell; a key hole is arranged in the lock core; the inner end of the lock shell is provided with a limit pin inserted in a concave ring groove of the lock core; at least one spacer block which blocks up a key channel in an unlocking state and slides into a hole on the lock shell is arranged on the lock core; the spacer block is in contact with a spring on the lock core; a through hole for the insertion of the spacer block is arranged on the key. The invention has the advantages that: the burglarproof lock is simple in structure; as lawbreakers can seldom move all the cylinders aside by inserting a master key into the key hole, the burglarproof lock has very good burglarproof effect.

Description

A kind of lock

Technical field

The present invention relates to a kind of lockset, particularly a kind of lock of using improper instrument to unblank of preventing.

Background technology

Keyhole in the lock core of present most of mechanical lock all is straight-through chamber, and the aperture of keyhole is bigger, and the lawless person is easy to master key inserted and stirs pellet shot from a slingshot in the keyhole and unblank, and anti-theft effect is undesirable.

Summary of the invention

Technical problem to be solved by this invention provides a kind of lockset of good anti-theft effect.

The present invention addresses the above problem with following technical scheme: the key that lock of the present invention includes lock housing, lock core and is complementary, have keyhole in the lock core, be provided with the pellet shot from a slingshot hole that pellet shot from a slingshot is installed in lock core and the lock housing, there is the spacer pin that inserts in the lock core concave ring groove inner end of lock housing, a spacer block that blocks key channel when unlocking condition, slip into the hole on the lock housing when blocking is installed on the lock core at least, and spacer block contacts with spring on being installed in lock core; Have the through hole that inserts for spacer block on the key.

In order further to increase anti-theft effect, can also there be a bit of position one side to have the groove of dress torsionspring on the lock core, opposite side has the chute of the movable jube that installation is made up of two spacer blocks up and down, one end of described movable jube has two to stretch in the groove and the top pin of roof pressure torsionspring, two spacer blocks up and down of movable jube block key channel when unlocking condition, and movable jube slips into the hole of lock housing when blocking.

Can change the cartridge type spring into the contacted torsionspring of movable jube, and be installed in the counterbore of movable spacer block side, the cartridge type spring contacts with the spur of movable spacer block side.

Two top pin of described movable jube are close to a side of key also can respectively set up a projection.

The number of described movable jube is more than two.

Lock of the present invention is simple in structure, because the spacer block that is provided with can block the keyhole passage, makes the lawless person be difficult to utilize master key to insert in the keyhole all pellets shot from a slingshot are pushed aside simultaneously, therefore has good anti-theft effect.

Description of drawings

Fig. 1 is the structural representation of lock embodiment 1 of the present invention.Lock among the figure is the view behind the insertion key.

Fig. 2 is the status architecture schematic diagram after Fig. 1 promotes key.

Fig. 3 is the A-A cross-sectional schematic of Fig. 2.

Fig. 4 is the B-B cross-sectional schematic of Fig. 3.

Fig. 5 is the structural representation of lock embodiment 2 of the present invention.Lock among the figure is the view behind the insertion key.

Fig. 6 is the status architecture schematic diagram after Fig. 5 promotes key.

Fig. 7 is the A-A cross-sectional schematic of Fig. 6.

Fig. 8 is the B-B cross-sectional schematic of Fig. 7.

Fig. 9 is the C-C cross-sectional schematic of Fig. 7.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is further described:

Fig. 1～Fig. 4 is the structural representation of lock embodiment 1 of the present invention, this lock includes the lock housing 1 that the orthodox car mechanical lock all has, lock core 2 and the key 15 that is complementary, in the lock core 2 of automotive lock keyhole is arranged, be provided with the pellet shot from a slingshot hole that pellet shot from a slingshot 6 is installed in lock core 2 and the lock housing 1, lock core 2 also has the pilot hole that compression spring 8 is installed, compression spring 8 keeps contacting with pellet shot from a slingshot 6, there is the spacer pin 7 that locks in the concave ring groove 18 that can insert lock core 2 inner end of lock housing 1, there is a bit of position one side to have groove 3 on the lock core 2, steady pin 5 is installed in the groove 3, be set with torsionspring 4 on the steady pin 5, this section lock core is positioned on the position of groove 3 opposite sides and has chute 11, movable jube 9 is installed in the chute 11, movable jube 9 has plush copper 12 near an end of lock housing 1, a sliding bevel 10 is arranged at plush copper 12 bottoms, and the other end of movable jube 9 has two to stretch into also the top pin 17 of roof pressure torsionspring 4 and two spacer blocks 14 up and down in the groove 3; Have hole 13 on the lock housing 1, the plush copper 12 of movable jube 9 is a blocking when slipping into hole 13, as shown in Figure 1; The plush copper 12 of movable jube 9 is a unlocking condition when skidding off hole 13, and as shown in Figure 2, two spacer blocks 14 up and down of movable jube 9 all inserted in the corresponding on the key through hole that has and blocked key channel this moment; Concave ring groove 18 1 sides at lock core 2 are provided with the straight trough 19 that communicates with concave ring groove 18, and when locking, spacer pin 7 places straight trough 19, and when unblanking, lock core 2 pushes inward when proceeding to extreme position, and spacer pin 7 just is in the concave ring groove 18, and this moment, just rotatable lock core was unblanked.

In order further to strengthen anti-theft effect, can respectively be provided with a projection 16 that can stretch on the recessed flank of tooth of key in the side that two top pin 17 of movable jube 9 are close to key; A plurality of movable jubes can also be set with the increase unlocking difficulty, and the installation site of movable jube also can be top or middle part at lock core.

The contacted end of described movable jube and lock housing also can be made as faces end directly, this moment corresponding lock housing the Kong Zewei ramp bore so that movable jube slips in the hole of lock housing; Movable jube can be formed by a plurality of spacer block stack combinations, also can be that a plurality of spacer blocks are connected as a single entity.

When unblanking, key 15 is inserted in the keyhole, at this moment, key 15 just will connect the pellet shot from a slingshot 6 of lock core 2 and lock housing 1 and push aside, make that non-marble is connected between lock core and the lock housing, with key 15 lock core 2 is pushed inward then, the plush copper 12 of movable jube 9 just is forced out the hole 13 of lock housing 1 in this process, also move inwards simultaneously with lock core, this moment, two top pin 17 of movable jube 9 just pressed torsionspring 4, and two spacer blocks 14 also stretch in corresponding two through holes up and down of key simultaneously up and down, and key again can be finished and unblank at last.

During locking, key is gone back to initial position, this moment, spacer pin 7 moved to the entrance of straight trough 19, and then key outwards moved and drive lock core move outward, movable jube is also outer simultaneously moves, because sliding bevel 10 is arranged at its plush copper bottom, when movable jube is moved outside and under the effect of torsionspring 4, slip in the hole 13 of lock housing 1, key moves past outward that torsionspring is unclamped gradually in the journey, initial position when making movable jube return blocking, and the spacer block of movable jube also breaks away from the through hole of key, and just can transfer to key this moment, finishes block action.

Fig. 5～Fig. 9 is the structural representation of theftproof lock embodiment 2 of the present invention, movable jube 9 on this anti-theft lock core is substantially the same manner as Example 1, the spring of activity jube of just bearing down on one changes cartridge type spring 21 into and is installed in the counterbore 22 of movable jube 9 sides, and cartridge type spring 21 contacts with the spur 23 of movable jube side; Also have additional three spacer blocks 14 that are spaced from each other setting simultaneously, the side of spacer block 14 has the counterbore 22 of mounting spring 21, and spring 21 contacts with the spur 23 of spacer block 14; Lock housing 1 is equipped with ramp bore 20 with the corresponding position of each spacer block, can skid off when making spacer block at unlocking condition under the interaction of ramp bore 20 and spring 21 when ramp bore 20 is blocked key channel and inserted in the through hole of key, at blocking can slip in the ramp bore 20 of lock housing.It unblanks identical with embodiment 1 with the lock operation step.

Theftproof lock of the present invention also can only be provided with a spacer block and be connected with spacer block on lock core spring, and on lock housing, offer corresponding hole, just can realize purpose of the present invention.

Because the spacer block on the lock core must block key channel when unblanking, therefore form a slit, space with narrow and small complications, just can clamp down on effectively illegal unlocking tool to pellet shot from a slingshot action unblank, thereby strengthened the theftproof performance of lock.

Lock of the present invention also can be used for the mechanical lock of other difformity pellet shot from a slingshot.

Claims

1. lock, the key that includes lock housing, lock core and be complementary, be provided with the pellet shot from a slingshot hole that pellet shot from a slingshot is installed in lock core and the lock housing, have keyhole in the lock core, there is the spacer pin that inserts in the lock core concave ring groove inner end of lock housing, it is characterized in that: a spacer block that blocks key channel when unlocking condition, slip into the hole on the lock housing when blocking is installed on the lock core at least, and spacer block contacts with spring on being installed in lock core; Have the through hole that inserts for spacer block on the key.

2. lock according to claim 1, it is characterized in that: also have a bit of position one side to have the groove of dress torsionspring on the lock core, opposite side has the chute of the movable jube that installation is made up of two spacer blocks up and down, one end of described movable jube has two to stretch in the groove and the top pin of roof pressure torsionspring, two spacer blocks up and down of movable jube block key channel when unlocking condition, and movable jube slips into the hole of lock housing when blocking.

3. lock according to claim 2 is characterized in that: change the cartridge type spring into the contacted torsionspring of movable jube, and be installed in the counterbore of movable spacer block side, the cartridge type spring contacts with the spur of movable spacer block side.

4. lock according to claim 2 is characterized in that: the side that two top pin of described movable jube are close to key respectively has a projection.

5. lock according to claim 2 is characterized in that: the number of described movable jube is more than two.