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CN-224200401-U - Lock with good anti-theft performance

CN224200401UCN 224200401 UCN224200401 UCN 224200401UCN-224200401-U

Abstract

The scheme relates to a lockset with good anti-theft performance, which comprises a lock core and a key, wherein the lock core comprises a lock shell, a lock liner arranged in the lock shell and a poking sleeve arranged on the lock shell and connected with one end of the lock liner, a key hole for inserting a key is axially formed in the lock liner in a penetrating mode, the lock shell comprises a lock shell connecting part and an installation cavity for installing the lock liner, at least two oblique staggered inclined bead locking assemblies are further arranged between the lock shell and the lock liner, the key is provided with a tooth hole matched with the inclined bead locking assemblies correspondingly, when the key is not inserted into the key hole of the lock liner or is inserted incorrectly, the front end of the inclined bead locking assembly is propped into the lock liner and is propped into the key hole, and accordingly locking is achieved, when the key is inserted into the lock liner along a key Kong Zhujian, the inclined bead locking assemblies are propped into the correspondingly matched tooth holes by the key, and the key can be driven to rotate at the moment, so that unlocking is achieved. The lock of the scheme improves the anti-theft performance, increases the difficulty of technical unlocking and improves the difficulty of key duplication.

Inventors

  • ZENG XIONGFEI
  • WANG LIANGLIANG
  • Xu nanhai

Assignees

  • 中山市基信锁芯有限公司

Dates

Publication Date
20260505
Application Date
20250530

Claims (10)

  1. 1. A lockset with good anti-theft performance is characterized by comprising a lock cylinder (100) and a key (200), wherein the lock cylinder (100) comprises a lock shell (1), a lock liner (2) arranged in the lock shell (1) and a poking sleeve (8) arranged on the lock shell (1) and connected with the lock liner (2), a key hole (21) for inserting the key (200) is axially formed in the lock liner (2) in a penetrating mode, the lock shell (1) comprises a lock shell connecting part (11) and an installation cavity (12) for installing the lock liner (2), and the lockset is characterized in that at least two groups of oblique bead locking assemblies (3) which are obliquely staggered are arranged between the lock shell (1) and the lock liner (2), a tooth hole (201) which is correspondingly matched with the oblique bead locking assemblies (3) is formed in the key (200), when the key hole (21) of the lock liner (2) is not inserted with the key (200) or the key (200) is not correct, the front end of the oblique bead locking assemblies (3) is jacked into the lock liner (2) and the key hole (21) is jacked into the key hole (21) in a gradually matched with the key hole (200) when the key (2) is gradually locked, at the moment, the lock liner (2) can be driven to rotate by rotating the key (200) to unlock.
  2. 2. The lock with good anti-theft performance according to claim 1, wherein the oblique bead locking assembly (3) comprises a first spring (31), a flat bead (32) abutted against the upper end of the first spring (31) and a main bead (33) abutted against the upper end of the Yu Pingzhu (32), a first mounting hole (111) communicated with the mounting cavity (12) is obliquely staggered on the lock shell connecting portion (11), a second mounting hole (22) communicated with the key hole (21) is obliquely staggered on the lock liner (2), the first spring (31) and the flat bead (32) are mounted in the first mounting hole (111), the main bead (33) is mounted in the second mounting hole (22) in a limiting mode, the first mounting hole (111) is coaxially communicated with the second mounting hole (22), the diameter of the first mounting hole (111) is identical to the diameter of the lower end of the second mounting hole (22), and the diameter of the flat bead (32) is identical to the diameter of the lower end of the main bead (33).
  3. 3. The lock with good anti-theft performance according to claim 2, wherein the second mounting hole (22) comprises a limiting hole (221) and a movable hole (222), the diameter of the limiting hole (221) is larger than that of the movable hole (222) so as to form a limiting inner ring (223) at the joint of the limiting hole and the movable hole, the main marble (33) is in a bullet shape, the main marble (33) comprises a limiting end (331) movably arranged in the limiting hole (221) and a movable end (332) movably arranged in the movable hole (222), and a limiting outer ring (333) is formed at the joint of the limiting end (331) and the movable end (332).
  4. 4. The lock with good anti-theft performance according to claim 1, wherein the inclined bead locking assembly (3) is provided with three to six groups, and the tooth holes (201) are correspondingly provided with three to six groups.
  5. 5. A lock with good theft protection as claimed in claim 1, characterized in that the diameter of the orifice and the depth of the hole of each of the said tooth holes (201) are different.
  6. 6. The lock with good anti-theft performance according to any one of claims 1 to 5, wherein the lock cylinder (100) further comprises a side bead locking assembly (4) and a transverse grid locking assembly (5) which is matched with the side bead locking assembly (4) to lock the lock cylinder (2), when a key (200) is not inserted into the lock cylinder (2) or the key (200) is inserted incorrectly, the side bead locking assembly (4) and the transverse grid locking assembly (5) are both in a locking state, and when the correct key (200) is inserted into the lock cylinder (2), the side bead locking assembly (4) is driven to move so as to unlock the transverse grid locking assembly (5), so that unlocking is realized.
  7. 7. The lock with good anti-theft performance according to claim 6, wherein the side bead locking assembly (4) is provided with at least two groups, the side bead locking assembly (4) comprises side bead holes (41) formed in the side wall of one end of the lock cylinder (2), second springs (42) mounted at the bottoms of the side bead holes (41) and side beads (43) mounted in the side bead holes (41) and one end of each side bead is abutted to the corresponding second spring (42), a first groove (431) is formed in the upper side of each side bead (43) upwards, a top foot (432) is arranged at the lower end of each first groove in a downward extending mode, and a snake-shaped groove (202) matched with the corresponding top foot (432) is formed in each key (200).
  8. 8. The lock with good anti-theft performance according to claim 7, wherein the transverse grid locking assembly (5) comprises a transverse grid groove (51) formed in the side wall of the upper end of the lock liner (2) and communicated with the side bead hole (41), and a transverse grid (52) which is inserted into the transverse grid groove (51) and can move radially in the transverse grid groove (51), third mounting holes (53) are formed in bottoms of two ends of the transverse grid groove (51) in a concave mode, third springs (54) are mounted in the third mounting holes (53), the transverse grid (52) comprises protruding portions (521) arranged at two ends of the transverse grid groove, and lower ends of the protruding portions (521) at two ends of the transverse grid groove are respectively abutted to the third springs (54) at two ends of the transverse grid groove.
  9. 9. The lock with good anti-theft performance according to claim 8, wherein the inner wall surface of the installation cavity (12) is concavely provided with a long groove (121) for limiting the transverse grid (52) so as to limit the rotation of the lock cylinder (2), the cross section of the long groove (121) is arc-shaped, and the upper end of the transverse grid (52) is provided with an arc-shaped strip (522) which is matched with the shape of the long groove (121).
  10. 10. The lock with good anti-theft performance according to claim 9, wherein the anti-drilling sheet (6) is inserted on the lock cylinder (2), the anti-drilling pin (7) is inserted on the lock shell (1), a second groove (423) is further formed in the upper side of the side bead (43) upwards, and the second groove (423) is located on the left side of the first groove (431) and has a depth lower than that of the first groove (431).

Description

Lock with good anti-theft performance Technical Field The utility model relates to the field of locks, in particular to a lock with good anti-theft performance. Background In the field of locks, the lock core is used as a core component for guaranteeing safety, and the antitheft performance of the lock core is always the key point of research and development. At present, the common lock cylinders in the market are mainly divided into the following two types in the anti-theft structural design: The first type is a lock cylinder solution that employs a single type of bead. Such cylinders typically selectively use one of the beads, either floating, side, marble, primary or secondary, etc., as the core anti-theft component. Because of the simple structure, the parts are fewer, the production and manufacturing cost is lower, and the assembly and the use are more convenient. However, the structural design of such a single bead presents a significant safety hazard. The internal structure of the lock cylinder is strong in regularity, an lawbreaker can easily realize technical opening through professional tools and technologies, and meanwhile, the lock cylinder is poor in anti-theft performance and difficult to meet increasing safety requirements due to the fact that the corresponding relation between the tooth shape of a key and a bead structure is simple and the key copying difficulty is low. The second type is a lock cylinder scheme employing two bead combinations, common combinations including side bead and marble combinations, side bead and floating bead combinations, and the like. The scheme enhances the anti-theft performance of the lock cylinder to a certain extent. The principle is that two beads are matched with each other at different positions in different movement modes, so that the unlocking complexity is increased. The scheme has the defects that firstly, the structure is complex, the number of parts is increased, the production and manufacturing processes are complicated, the processing difficulty and the cost are increased, the installation process is more difficult, and the production efficiency is reduced; secondly, in this type of scheme, the side bead is usually installed at the lock courage side that punches, and marble or floating bead etc. are generally installed at the upper end or the lower extreme of lock courage through punching vertically, and same row's marble or floating bead size and structure are unanimous, all do vertical radial motion in the hole. This structural arrangement has been known to lawless persons over long periods of use. Because the corresponding relation between the tooth holes and the bead structures on the key has regularity, lawbreakers can easily unlock the lock by using professional tools or technical means according to the conventional lock cylinder structure layout, and meanwhile, the key is relatively easy to copy, so that the problem of insufficient anti-theft performance of the lock cylinder cannot be fundamentally solved. Therefore, how to improve the anti-theft performance of the lock core and increase the difficulty of copying and illegally opening the key under the premise of ensuring simple structure and convenient manufacture becomes an important subject to be solved by the technicians in the field. Disclosure of utility model The utility model overcomes the defects of the technology and provides the lockset with good anti-theft performance. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The lock with the good anti-theft performance comprises a lock core and a key, wherein the lock core comprises a lock shell, a lock liner arranged in the lock shell and a poking sleeve arranged on the lock shell and connected with the lock liner, a key hole for a key to insert is axially formed in the lock liner in a penetrating mode, the lock shell comprises a lock shell connecting part and an installation cavity for installing the lock liner, at least two oblique staggered oblique bead locking assemblies are further arranged between the lock shell and the lock liner, a tooth hole matched with the oblique bead locking assemblies is formed in the key in a corresponding mode, when the key is not inserted into the key hole of the lock liner or is inserted incorrectly, the front end of the oblique bead locking assembly is jacked into the lock liner and jacked into the key hole, and accordingly locking is achieved, when the key is inserted into the lock liner along a key Kong Zhujian, the oblique bead locking assemblies are jacked into the correspondingly matched tooth holes, and at the moment, the key can be driven to rotate to unlock. Further, the oblique ball locking assembly comprises a first spring, a flat ball abutted to the upper end of the first spring and a main ball abutted to the upper end of the flat ball, wherein first mounting holes communicated with the mounting cavity are obliquely staggered on the lo