Anti-disassembly limiting mechanism of anti-counterfeiting lock catch

Abstract

The utility model relates to the technical field of anti-fake lock catches, in particular to an anti-disassembly limiting mechanism of an anti-fake lock catch, which comprises a lock catch shell, a tongue depressor and an anti-disassembly one-way limiting component, a through notch is arranged on the side end face of the lock catch shell, a connecting fixing plate is arranged on the side of the lock catch shell, and the anti-disassembly one-way limiting component is arranged on the connecting fixing plate. A lock cylinder inserting plate is fixedly connected to the inner side of the connecting fixing plate, a buckle through groove is formed in the lock cylinder inserting plate, the lock cylinder inserting plate is slidably connected to the interior of the through groove opening, a built-in fixing block is arranged in the lock catch shell, and an anti-disassembly one-way limiting assembly is arranged in the built-in fixing block. And a movable pivot roll shaft is rotationally connected into the lock catch shell. The limiting tension plate is matched with the limiting groove, only one-way insertion of the insertion column is allowed, the structure can be blocked or damaged due to forced reverse movement, the structure cannot be repeatedly used subsequently, and therefore the anti-fake and anti-tamper functions are achieved.

Description

A counterfeit-proof lock anti-disassembly limiting mechanism Technical Field

[0001] This utility model relates to the field of anti-counterfeiting lock technology, and in particular to an anti-counterfeiting lock anti-disassembly limiting mechanism. Background Technology

[0002] Anti-counterfeiting locks are security devices used to prevent product packaging or goods from being illegally disassembled, replaced, or counterfeited. They are widely used in food, pharmaceuticals, tobacco and alcohol, electronic products, luxury goods, and other fields. In order to prevent products from being counterfeited, replaced, or tampered with in the circulation process, anti-disassembly limiting mechanisms are used.

[0003] Existing anti-counterfeiting locks mostly use two mating plates to achieve the anti-counterfeiting effect, but there are some drawbacks in actual use. Due to the lack of a tamper-proof limiting mechanism, the lock can be installed or disassembled at will. After being illegally opened, it can be restored with simple tools to cover up the disassembly marks, which greatly weakens the anti-counterfeiting performance of the lock and increases the risk of counterfeiting.

[0004] Therefore, addressing the problem that existing anti-counterfeiting locks lack a tamper-proof limiting mechanism, allowing for arbitrary installation or removal, and enabling them to be easily restored with simple tools after being illegally opened, thus concealing tampering marks and significantly weakening their anti-counterfeiting performance, this invention uses a limiting tension plate and a limiting groove to allow only unidirectional insertion of the plug pin. Forced reverse movement will cause the structure to jam or be damaged, making it unusable for subsequent reuse, thereby achieving anti-counterfeiting and anti-tampering functions. Summary of the Invention

[0005] In order to overcome the problem that existing anti-counterfeiting locks lack anti-disassembly limiting mechanisms, the locks can be installed or removed at will, and after being illegally opened, they can be restored with simple tools to cover up the disassembly marks, resulting in a significant weakening of the lock's anti-counterfeiting performance.

[0006] The technical solution of this utility model is as follows: an anti-counterfeiting lock anti-disassembly limiting mechanism, including a lock housing, a pressure tongue plate, and an anti-disassembly one-way limiting component. The lock housing has a through slot on its side end face, and a connecting fixing plate is provided on the side of the lock housing. A lock cylinder insert plate is fixedly connected to the inner side of the connecting fixing plate. A snap-fit ​​through slot is provided inside the lock cylinder insert plate. The lock cylinder insert plate is slidably connected to the inside of the through slot. An internal fixing block is provided inside the lock housing. An anti-disassembly one-way limiting component is provided inside the internal fixing block. A movable pivot roller is rotatably connected inside the lock housing. A pressure tongue plate is fixedly connected to the side end of the movable pivot roller. A locking insert plate is fixedly connected to the side end of the movable pivot roller.

[0007] Preferably, a first U-shaped block is fixed to the side end of the movable pivot roller, a reset spring is hinged to the inner side of the first U-shaped block, a second U-shaped block is hinged to the side end of the reset spring, and the second U-shaped block is fixed to the inner wall of the side end of the locking housing.

[0008] Preferably, the anti-tamper one-way limiting component includes a plug-in cavity, a limiting groove, a connecting short rod, a plug-in post, a mounting groove, a sliding block, an external fixing block, a limiting tension plate, a linkage short plate, and a retraction spring. The internal fixing block has a plug-in cavity, and the inner wall of the plug-in cavity has a limiting groove.

[0009] Preferably, a connecting rod is fixed to the side end of the movable pivot roller, and a plug is hinged to the upper end of the connecting rod.

[0010] Preferably, the plug has mounting grooves on both sides, and the inner walls of the mounting grooves have sliding grooves on the upper and lower sides. A sliding block is slidably connected inside the mounting groove, and the upper and lower sides of the sliding block are slidably connected to the sliding grooves on the inner walls of the mounting groove.

[0011] Preferably, an external fixing block is fixedly connected to the side end face of the plug-in post, and a limit tension plate is hinged to the inner side of the external fixing block.

[0012] Preferably, a linkage short plate is hinged to the inner side of the limiting tension plate, and the side end of the linkage short plate is hinged to the side end face of the sliding block. A contraction spring is installed on the inner wall of the mounting groove, and the side end of the contraction spring is fixed to the side end of the sliding block.

[0013] The beneficial effects of this utility model are:

[0014] 1. The mechanical one-way valve structure is formed by the cooperation of the limiting tension plate and the limiting groove, which only allows the plug to move in one direction into the plug cavity. When forcibly disassembled, the limiting tension plate will be jammed by the edge of the limiting groove. Continued illegal disassembly will cause irreversible damage to the limiting tension plate, sliding block and other parts. It intuitively shows the user that the buckle has been illegally disassembled and cannot be reused, effectively preventing criminals from using the disassembled buckle to counterfeit packaging and reuse.

[0015] 2. Basic mechanical locking is provided by inserting the locking plate into the buckle slot. The pressure plate needs to overcome the tension of the reset spring to rotate, which can avoid accidental triggering of the lock. The entire locking process can be triggered by simply pressing the pressure plate. Attached Figure Description

[0016] Figure 1 shows a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 shows a three-dimensional structural diagram of the movable pivot roller of this utility model;

[0018] Figure 3 shows a three-dimensional structural diagram of the insertion cavity of this utility model;

[0019] Figure 4 shows a three-dimensional structural diagram of the plug-in post of this utility model;

[0020] Figure 5 shows an enlarged three-dimensional structural diagram of point A in Figure 4 of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Lock housing; 2. Through slot; 3. Connecting fixing plate; 4. Lock core insert plate; 5. Snap-on through slot; 6. Internal fixing block; 101. Movable pivot roller; 102. Tongue plate; 103. Locking insert plate; 104. First U-shaped block; 105. Reset tension spring; 106. Second U-shaped block; 601. Insertion cavity; 602. Limiting groove; 603. Connecting short rod; 604. Insertion post; 605. Mounting groove; 606. Sliding block; 607. External fixing block; 608. Limiting tension plate; 609. Linkage short plate; 610. Contraction spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5. This utility model provides an embodiment: an anti-counterfeiting lock anti-disassembly limiting mechanism, including a lock housing 1, a tongue depressor 102, and an anti-disassembly one-way limiting component. The lock housing 1 has a through slot 2 on its side end face. A connecting fixing plate 3 is provided on the side of the lock housing 1. A lock cylinder insert 4 is fixedly connected to the inner side of the connecting fixing plate 3. A buckle through slot 5 is provided inside the lock cylinder insert 4. The lock cylinder insert 4 is slidably connected to the inside of the through slot 2. An internal fixing block 6 is provided inside the lock housing 1. An anti-disassembly one-way limiting component is provided inside the internal fixing block 6. A movable pivot roller 101 is rotatably connected inside the lock housing 1. The tongue depressor 102 is fixedly connected to the side end of the movable pivot roller 101. A locking insert 103 is fixedly connected to the side end of the movable pivot roller 101.

[0024] A first U-shaped block 104 is fixedly connected to the side end of the movable pivot roller 101. A reset spring 105 is hinged to the inner side of the first U-shaped block 104. A second U-shaped block 106 is hinged to the side end of the reset spring 105. The second U-shaped block 106 is fixedly connected to the inner wall of the side end of the latch housing 1. The reset spring 105 connects the first U-shaped block 104 and the second U-shaped block 106 to provide initial reset force. Pressing the pressure tongue plate 102 can trigger the locking, effectively avoiding locking caused by accidental contact.

[0025] The anti-tamper one-way limiting component includes a plug-in cavity 601, a limiting groove 602, a connecting short rod 603, a plug-in post 604, a mounting groove 605, a sliding block 606, an external fixing block 607, a limiting tension plate 608, a linkage short plate 609, and a retraction spring 610. The plug-in cavity 601 is provided inside the internal fixing block 603. The limiting groove 602 is provided on the inner wall of the plug-in cavity 601. The limiting groove 602 in the plug-in cavity 601, together with the limiting tension plate 608, can play a one-way limiting role for the plug-in post 604.

[0026] A connecting rod 603 is fixed to the side end of the movable pivot roller 101, and a plug pin 604 is hinged to the upper end of the connecting rod 603. When the movable pivot roller 101 rotates, the plug pin 604 will move into the plug cavity 601.

[0027] The plug post 604 has mounting grooves 605 on both sides, and the inner wall of the mounting groove 605 has sliding grooves on the upper and lower sides. The mounting groove 605 is slidably connected to the inside of the mounting groove 605, and the upper and lower sides of the sliding block 606 are slidably connected to the sliding grooves on the inner wall of the mounting groove 605.

[0028] An external fixing block 607 is fixedly connected to the side end face of the plug-in post 604. A limiting tension plate 608 is hinged to the inner side of the external fixing block 607. After the plug-in post 604 is fully inserted into the plug-in cavity 601, the limiting tension plate 608 is aligned with the notch of the limiting groove 602 to engage and achieve a one-way locking effect.

[0029] A linkage short plate 609 is hinged to the inner side of the limiting tension plate 608. The side end of the linkage short plate 609 is hinged to the side end face of the sliding block 606. A contraction spring 610 is installed on the inner wall of the mounting groove 605. The side end of the contraction spring 610 is fixed to the side end of the sliding block 606. When the limiting tension plate 608 enters the insertion cavity 601, the contraction spring 610 can cause the limiting tension plate 608 to contract first until it is engaged in the limiting groove 602.

[0030] Working principle: According to Figures 1-2, the connecting fixing plate 3 first pushes the lock cylinder insert plate 4 into the through slot 2 in the lock housing 1. When the external force presses the tongue plate 102, the movable pivot roller 101 drives the locking insert plate 103 to rotate synchronously. The locking insert plate 103 moves towards the lock cylinder insert plate 4 and is inserted into the buckle through slot 5 to achieve initial locking.

[0031] According to Figures 3-5, when the movable hub roller 101 rotates, the connecting rod 603 drives the insertion post 604 to move into the insertion cavity 601. During the insertion of the insertion post 604, the limiting tension plates 608 on both sides are squeezed by the inner wall of the limiting groove 602. Through the linkage short plate 609, the sliding block 606 is pushed to slide in the mounting groove 605, compressing the contraction spring 610. When the insertion post 604 is fully inserted into the insertion cavity 601, the limiting tension plate 608 is aligned with the notch of the limiting groove 602. The contraction spring 610 resets and pushes the sliding block 606, so that the limiting tension plate 608 is locked into the limiting groove 602, forming a one-way lock to prevent the insertion post 604 from reversing and exiting.

[0032] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A counterfeit-proof lock anti-disassembly limiting mechanism, comprising a lock housing (1); characterized in that: It also includes a tongue depressor (102) and an anti-tamper one-way limiting component. The side end face of the latch housing (1) is provided with a through slot (2). A connecting fixing plate (3) is provided on the side of the latch housing (1). A lock cylinder insert plate (4) is fixedly connected to the inner side of the connecting fixing plate (3). A buckle through slot (5) is provided inside the lock cylinder insert plate (4). The lock cylinder insert plate (4) is slidably connected to the inside of the through slot (2). An internal fixing block (6) is provided inside the latch housing (1). An anti-tamper one-way limiting component is provided inside the internal fixing block (6). A movable pivot roller (101) is rotatably connected inside the latch housing (1). A tongue depressor (102) is fixedly connected to the side end of the movable pivot roller (101). A locking insert plate (103) is fixedly connected to the side end of the movable pivot roller (101).

2. The anti-counterfeiting lock anti-disassembly limiting mechanism according to claim 1, characterized in that: The side end of the movable pivot roller (101) is fixedly connected to a first U-shaped block (104), and the inner side of the first U-shaped block (104) is hinged to a reset spring (105). The side end of the reset spring (105) is hinged to a second U-shaped block (106), and the second U-shaped block (106) is fixedly connected to the inner wall of the side end of the locking housing (1).

3. The anti-counterfeiting lock anti-disassembly limiting mechanism according to claim 1, characterized in that: The anti-tamper one-way limiting component includes a plug-in cavity (601), a limiting groove (602), a connecting short rod (603), a plug-in post (604), a mounting groove (605), a sliding block (606), an external fixing block (607), a limiting tension plate (608), a linkage short plate (609), and a retraction spring (610). The plug-in cavity (601) is provided inside the built-in fixing block (6), and the limiting groove (602) is provided on the inner wall of the plug-in cavity (601).

4. The anti-counterfeiting lock anti-disassembly limiting mechanism according to claim 3, characterized in that: The side end of the movable pivot roller (101) is fixedly connected to a connecting rod (603), and the upper end of the connecting rod (603) is hinged to a plug post (604).

5. The anti-counterfeiting lock anti-disassembly limiting mechanism according to claim 3, characterized in that: The plug post (604) has mounting grooves (605) on both sides. The inner wall of the mounting groove (605) has sliding grooves on the upper and lower sides. A sliding block (606) is slidably connected inside the mounting groove (605). The upper and lower sides of the sliding block (606) are slidably connected to the sliding grooves on the inner wall of the mounting groove (605).

6. The anti-counterfeiting lock anti-disassembly limiting mechanism according to claim 3, characterized in that: An external fixing block (607) is fixedly connected to the side end face of the plug-in post (604), and a limit tension plate (608) is hinged to the inner side of the external fixing block (607).

7. The anti-counterfeiting lock anti-disassembly limiting mechanism according to claim 3, characterized in that: The inner side of the limiting tension plate (608) is hinged with a linkage short plate (609), and the side end of the linkage short plate (609) is hinged to the side end face of the sliding block (606). The inner wall of the mounting groove (605) is equipped with a contraction spring (610), and the side end of the contraction spring (610) is fixed to the side end of the sliding block (606).

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