CN211007993U

CN211007993U - Anti-theft lock

Info

Publication number: CN211007993U
Application number: CN201921582435.6U
Authority: CN
Inventors: 周章华
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-07-14
Anticipated expiration: 2029-09-23

Abstract

The utility model discloses an anti-theft lock, including key and lock body, the key includes key handle and key body, the lock body includes the lock shell, well lock shell and lock core, lock core suit is in well lock shell, well lock shell suit is in the lock shell, be equipped with on the lock core and supply key body male lockhole, be equipped with the anomalous recess of range on its characterized in that key body, be equipped with the marble hole on the lock core, marble hole and lockhole intercommunication, the downthehole marble of installing of marble, the marble has insertion portion and pressure part, a bulge has between insertion portion and the pressure part, the shape and the recess shape of insertion portion match each other, be provided with in the pressure part and turn round the pressure spring, be equipped with on the bulge and turn round the pressure spring, the circumference of well lock shell radially is equipped with the annular, the pressure part and the annular cooperation of marble, a wide groove has in the annular. The utility model has the advantages of simple structure and reasonable design to can greatly improve the theftproof performance of tool to lock.

Description

Anti-theft lock

Technical Field

The utility model relates to a tool to lock, concretely relates to tool to lock that theftproof performance is good.

Background

At present, the opening of the lock is realized by a key for most of the locks on the market, the lock generally comprises a lock shell, a lock core and a blade, the inner side of a blade hole is provided with a bulge matched with the key, the outer side of the hole is provided with a groove, a spring seat is arranged on the blade, the lock core and the lock shell are provided with long grooves which are mutually communicated, and a transverse pin is arranged in the long groove, the lock with the structure has the working principle that the key is inserted to be matched with the bulge on the inner side of the blade hole, all the grooves on the blade are positioned on a straight line, at the moment, the transverse pins in the long grooves in the lock core and the lock shell fall down and are arranged in the grooves of all the blades, the transverse pins are flush with the outer circumference of the lock core, the lock core can be driven to rotate to realize the unlocking by rotating the key, the structure has the defect that when the lock is unlocked by adopting a foreign object, only the blade, the anti-theft performance is poor.

SUMMERY OF THE UTILITY MODEL

In view of the deficiency of the background art, the utility model aims to solve the technical problem that a simple structure is provided, reasonable in design to can greatly improve the tool to lock of its theftproof performance.

Therefore, the utility model discloses an adopt following scheme to realize:

the utility model provides an anti-theft lock, includes key and lock body, and the key includes key handle and key body, the lock body includes outer lock shell, well lock shell and lock core, the lock core suit is in well lock shell, well lock shell suit is in outer lock shell, be equipped with on the lock core and supply key body male lockhole, its characterized in that be equipped with on the key body and arrange anomalous recess, be equipped with the marble hole on the lock core, the marble hole with the lockhole intercommunication, the downthehole marble that installs of marble, the marble has insertion portion and pressure part, a convex body has between insertion portion and the pressure part, the shape of insertion portion with recess shape matches each other, be equipped with on the pressure part and turn round the pressure spring, the one end of turning round the pressure spring has the extension section, the extension section stretches into in the standing groove in the lock core, the circumference of well lock shell radially is equipped with the annular, the pressure part of the marble is matched with the ring groove, and a wide groove is arranged in the ring groove.

The insertion portion of the pin has a guide surface.

The lock core is characterized in that an arc-shaped cover plate is arranged at the pin hole of the lock core, a through hole is formed in the arc-shaped cover plate and corresponds to the pin hole, and after the arc-shaped cover plate is installed on the lock core, the arc surface of the arc-shaped cover plate and the arc surface of the lock core form a circumference.

And an anti-drilling piece is arranged at the entrance of the lock hole, and an insertion hole matched with the key body is formed in the anti-drilling piece.

The grooves on the key body are arranged on two sides of the key body, and the arrangement rules of the grooves on the two sides are the same.

Adopt above-mentioned technical scheme, the utility model discloses an advantage does: 1. the structure is simple, the design is reasonable, and the large-scale production can be realized; 2. by arranging the irregular groove on the key body, after the key body is inserted into the lock core, the insertion part on the marble can be inserted into the groove on the key body under the action of the torsion and compression spring and can drive the marble to rotate, so that the pressure part on the marble is aligned to the annular groove on the middle lock shell, the rotation of the lock core is ensured not to be blocked by the middle lock shell, and the lock core can be driven to rotate by rotating the key at the moment, so that the lock is unlocked. The lockset with the structure needs to ensure that each marble rotates to a preset angle, so that the pressure part of the marble is aligned with the annular groove on the middle lock shell, the lockset can be unlocked, in the actual use process, except for using a key, the rotation of the marble is difficult to realize through other objects, and the anti-theft performance of the lockset is effectively improved.

Drawings

The utility model discloses there is following figure:

FIG. 1 is an external structural view of the present invention;

FIG. 2 is a structural diagram of the key of the present invention;

FIG. 3 is the view of FIG. 1 with the outer lock shell removed;

FIG. 4 is the view of FIG. 3 with the middle lock shell removed;

FIG. 5 is the view of FIG. 4 with the arcuate cover removed;

FIG. 6 is an enlarged view of a portion of FIG. 5 at the point A;

FIG. 7 is a structural diagram of the lock cylinder of the present invention;

fig. 8 is a structural diagram of the marble of the present invention.

Detailed Description

As shown in the figures, the utility model discloses an anti-theft lock, including key and lock body, the key includes key handle 3 and key body 2, the lock body includes outer lock shell 1, well lock shell 5 and lock core 7, lock core 7 suit is in well lock shell 5, well lock shell 5 suit is in outer lock shell 1, be equipped with the lockhole 9 that supplies the key body to insert on the lock core 7, be equipped with the irregular recess 4 of range on the key body 2, be equipped with bullet hole 8 on the lock core 7, bullet hole 8 communicates with lockhole 9, install the pellet shot from a slingshot in the bullet hole 8, the pellet shot from a slingshot has insertion portion 10 and pressure part 11, have a convex body 12 between insertion portion 10 and pressure part 11, the shape of insertion portion 10 matches each other with recess 4 shape, be equipped with the pressure spring 18 on the pressure part 11, here the pressure spring 18 that twists, have the function of pressure spring promptly, have the function of torsion spring again, the one end of pressure spring 18 has extension section 19, extension section 19 stretches into standing groove 20 in, the circumference of the middle lock shell 5 is radially provided with a ring groove 6, a pressure part 11 of the marble is matched with the ring groove 6, and a wide groove 13 is arranged in the ring groove 6 to ensure that the pressure part 11 can smoothly rotate. The insertion portion 10 of the pin has a guide surface 14. So that the insertion portion 10 can be more smoothly inserted into the recess 4 of the key body 2. An arc-shaped cover plate 15 is arranged at the marble hole of the lock core 7, a through hole 16 is arranged on the arc-shaped cover plate 15, the through hole 16 corresponds to the marble hole 8, and after the arc-shaped cover plate 15 is installed on the lock core 7, the arc surface of the arc-shaped cover plate and the arc surface of the lock core 7 form a circumference to further limit the marble and ensure that the marble cannot be separated in the action process. The entrance of lockhole is equipped with prevents boring piece 17, prevents having the patchhole that matches with the key body on the boring piece 17 for the easy little electric drill of being bored of tool to lock is difficult, further promotes the theftproof performance of tool to lock. The grooves 4 on the key body 2 are arranged on two sides of the key body 2, the arrangement rules of the grooves 4 on the two sides are the same, the complexity inside the lock cylinder is further improved, and the lock breaking difficulty of the anti-theft lock is increased.

The utility model discloses a theory of operation is: when the key body 2 is inserted into the lock cylinder 7, the key body 2 firstly contacts with the insertion portion 10 of the pin tumbler and presses the pin tumbler to lift the pin tumbler, when the key body 2 is completely inserted, the insertion portion 10 on the pin tumbler is inserted into the groove 4 on the key body 2 under the action of the torsion compression spring 18 and drives the pin tumbler to slightly rotate, it should be noted that, in the locking state, the required rotation angle of the insertion portion 10 from the insertion into the groove 4 is generally set to be 5-20 degrees, and in addition, the action of the guide surface 14 on the insertion portion 10 ensures that the insertion portion 10 can be smoothly inserted into the groove 4, along with the rotation of the pin tumbler, the acting force is also exerted on the extension section 19 on the torsion compression spring 18, so that the pressure portion 11 on the pin tumbler is aligned with the annular groove 6 on the middle lock shell 5, and the rotation of the lock cylinder 7 is not hindered by the middle lock shell 5, and then the key can be rotated to drive the lock, realize the opening of tool to lock, after pulling out the key, the pellet shot from a slingshot can turn to initial angle under the effect of the section 19 of extending on the pressure spring 18 of turning round for pressure portion 11 on the pellet shot from a slingshot staggers with annular 6 on the well lock shell 5, and well lock shell 5 can cause the hindrance to the rotation of pellet shot from a slingshot at this moment, guarantees that the lock core can not take place to rotate, and then realizes closing of tool to lock. The lockset with the structure needs to ensure that each marble rotates to a preset angle, so that the pressure part 11 of the lockset is aligned with the annular groove 6 on the middle lock shell 5, the lockset can be unlocked, the rotation of the marble is difficult to realize through other objects except a key, and the anti-theft performance of the lockset is effectively improved.

Claims

1. The anti-theft lock comprises a key and a lock body, wherein the key comprises a key handle (3) and a key body (2), the lock body comprises an outer lock shell (1), a middle lock shell (5) and a lock cylinder (7), the lock cylinder (7) is sleeved in the middle lock shell (5), the middle lock shell (5) is sleeved in the outer lock shell (1), a lock hole (9) for inserting the key body is formed in the lock cylinder (7), the anti-theft lock is characterized in that irregular grooves (4) are formed in the key body (2), a marble hole (8) is formed in the lock cylinder (7), the marble hole (8) is communicated with the lock hole (9), marbles are installed in the marble hole (8) and are provided with an inserting part (10) and a pressure part (11), a convex body (12) is arranged between the inserting part (10) and the pressure part (11), the shape of the inserting part (10) is matched with the shape of the groove (4), be equipped with on pressure portion (11) and turn round pressure spring (18), the one end of turning round pressure spring (18) has extension section (19), extension section (19) stretch into in standing groove (20) in lock core (7), the circumference of well lock shell (5) radially is equipped with annular (6), the pressure portion (11) of pellet shot from a slingshot with annular (6) cooperation, a wide groove (13) have in annular (6).

2. Anti-theft lock according to claim 1, characterized in that the insertion portion (10) of the tumbler has a guide surface (14).

3. The anti-theft lock according to claim 1, characterized in that the pin hole of the lock core (7) is provided with an arc-shaped cover plate (15), the arc-shaped cover plate (15) is provided with a through hole (16), the through hole (16) corresponds to the pin hole (8), and after the arc-shaped cover plate (15) is installed on the lock core (7), the arc surface of the arc-shaped cover plate and the arc surface of the lock core (7) form a circumference.

4. The anti-theft lock according to claim 1, characterized in that an anti-drilling plate (17) is provided at the entrance of the lock hole, and the anti-drilling plate (17) has an insertion hole matching with the key body.

5. Anti-theft lock according to claim 1, characterized in that the grooves (4) of the key body (2) are arranged on both sides of the key body (2), the grooves (4) on both sides being arranged regularly.