Anti-saw lock tongue

Abstract

The present invention relates to the technical field of lock tongues, and discloses an anti-saw-off lock tongue, comprising a pick, an anti-saw-off structure and a plurality of patches; the anti-saw-off structure is arranged on the pick, and the plurality of patches are respectively overlapped and arranged on both sides of the pick; the anti-saw-off structure comprises a movably arranged metal block, which can move relative to the pick; when someone uses a tool to saw the lock tongue, when the saw reaches the position of the metal block, since the position of the metal block is not fixed and can roll relative to the pick and the connecting shaft, when the tool saws the metal block, the metal block rolls, causing the sawed position to change continuously, thereby increasing the difficulty of being sawed off, and the arrangement structure of the plurality of patches is convenient for disassembly and replacement, and the thickness of the lock tongue can be changed by selecting the number of installed patches, thereby facilitating adaptation to lock slots of different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of lock tongues, in particular to a lock tongue that is anti-sawed. Background Art

[0002] The security performance of existing locks is getting higher and higher, and the types are gradually enriched. Among them, fingerprint locks are a type of lock that has emerged in recent years and has strong security. It drives the internal locking mechanism through fingerprint input and opens the door by turning the handle. However, due to its more complex structure, it requires higher flexibility of the internal parts.

[0003] At present, there are many types of lock tongues, including oblique tongues, square tongues, anti-saw lock tongues, double-hook lock tongues, etc. The lock core is also divided into single lock tongue lock core and multi-point lock tongue lock core according to the number of lock tongues. The inclined surface design of the oblique tongue and its internal spring components are completely for the convenience of closing the door. For those who pick the lock, the lock can be destroyed by sawing off the lock tongue. The existing lock tongue is easy to saw off, thereby reducing the sturdiness of the lock. Summary of the Invention

[0004] The purpose of the present invention is to provide a lock tongue that is resistant to sawing, aiming to solve the problem in the prior art that the lock tongue is easily sawed off.

[0005] The present invention is implemented as follows: the anti-saw-off lock tongue includes a pick, an anti-saw-off structure and a plurality of patches; the anti-saw-off structure is arranged on the pick, and the plurality of patches are respectively overlapped and arranged on both sides of the pick; the anti-saw-off structure includes a movably arranged metal block, and the metal block can move relative to the pick.

[0006] Furthermore, the metal block is cylindrical and can roll relative to the paddle.

[0007] Furthermore, a mounting hole for mounting the anti-saw-off structure is provided on the pick, and the mounting hole extends along the length direction of the pick; the anti-saw-off structure is mounted in the mounting hole, and the metal block rolls in the mounting hole.

[0008] Furthermore, the two sides of the mounting hole extend away from each other to form an inner groove, and the anti-saw-off structure includes a connecting shaft, the two ends of the connecting shaft are respectively embedded in the two inner grooves and connected to the pick; a sleeve is provided on the connecting shaft, the diameter of the sleeve is larger than the diameter of the connecting shaft, and a plurality of spaced connecting strips are provided on the sleeve, and the ends of the plurality of connecting strips extend to the metal block and are fixed to the metal block.

[0009] Furthermore, the diameter of the metal block is greater than the thickness of the pick, and the patch in contact with the pick forms a docking patch, which is recessed in a direction away from the metal block to form a groove, and both sides of the metal block extend to the grooves located on both sides of the pick.

[0010] Furthermore, a plurality of blocks are provided on the outer surface of the metal block, and the plurality of blocks are arranged at intervals on the outer surface of the metal block, and two adjacent blocks are arranged at intervals and staggered.

[0011] Furthermore, the outer surface of the block is a polished arc surface, and the thickness of the block gradually decreases from the middle of the block to the outer periphery of the block.

[0012] Furthermore, a sawtooth-shaped protrusion is provided between adjacent blocks, and the height of the protrusion is greater than the height of the periphery of the block.

[0013] Furthermore, a plurality of the patches are overlapped and riveted with the pick.

[0014] Furthermore, the metal block is steel.

[0015] Compared with the prior art, the anti-saw-off lock tongue provided by the present invention, when someone uses a tool to saw off the lock tongue, when the saw reaches the position of the metal block, since the position of the metal block is not fixed and can roll relative to the pick and the connecting shaft, when the tool saws the metal block, the metal block rolls, causing the sawed position to constantly change, thereby increasing the difficulty of sawing it off, and the arrangement structure of multiple patches is convenient for disassembly and replacement, and the thickness of the lock tongue can be changed by selecting the number of installed patches, thereby facilitating adaptation to lock slots of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 2 is a three-dimensional schematic diagram of a saw-off-proof lock tongue provided by an embodiment of the present invention;

[0017] Figure 2 1 is a perspective schematic diagram of an anti-saw-off structure in an anti-saw-off lock tongue provided by an embodiment of the present invention;

[0018] Figure 3 It is a three-dimensional schematic diagram of a metal block provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0022] Reference Figure 1-3 As shown, a preferred embodiment of the present invention is provided.

[0023] The anti-saw-off lock tongue includes a pick 1, an anti-saw-off structure and multiple patches 2; a mounting hole 3 is provided on the pick 1 for installing the anti-saw-off structure, and the square saw-off structure includes a connecting shaft 7 and a metal block 4. The two ends of the connecting shaft 7 are respectively fixed to the pick 1, and the metal block 4 is movably sleeved on the connecting shaft 7. The metal block 4 is cylindrical and is made of steel, and can roll relative to the connecting shaft 7 and the pick 1; multiple patches 2 are respectively overlapped and arranged on both sides of the pick 1, and the multiple patches 2 are overlapped and riveted with the pick 1, so that the pick 1 and the anti-saw-off structure are clamped between the patches 2.

[0024] The anti-saw-off lock tongue provided above, when someone uses a tool to saw off the lock tongue, when the saw reaches the position of the metal block 4, since the position of the metal block 4 is not fixed and can roll relative to the pick 1 and the connecting shaft 7, when the tool saws to the metal block 4, the metal block 4 rolls, causing the sawed position to constantly change, thereby increasing the difficulty of being sawed off, and the arrangement structure of multiple patches 2 is convenient for disassembly and replacement, and the thickness of the lock tongue can be changed by selecting the number of installed patches 2, thereby facilitating adaptation to lock slots of different sizes.

[0025] The two sides of the mounting hole 3 extend away from each other to form an inner groove. The anti-saw-off structure includes a connecting shaft 7, the two ends of the connecting shaft 7 are respectively embedded in the two inner grooves and connected to the pick 1; the metal block 4 is sleeved on the connecting shaft 7, and the two ends of the connecting shaft 7 are respectively provided with a hoop 8. The diameter of the hoop 8 is slightly larger than the diameter of the connecting shaft 7. A plurality of connecting strips 9 are connected to the hoop 8. The plurality of connecting strips 9 are arranged at intervals, and the ends of the plurality of connecting strips 9 extend the ends of the metal block 4 respectively and are fixed to the metal block 4 to connect the metal block 4 and the connecting shaft 7 to ensure that the metal block 4 rolls smoothly, and the two ends of the metal block 4 are respectively extended to be long enough, that is, the tool cannot touch the two ends of the metal block 4 and cannot be sawed directly from the side of the metal block 4, to ensure that the tool will encounter the metal block 4 when sawing off the lock tongue.

[0026] The cross-sectional area of ​​the metal block 4 is larger than that of the pick 1. The patch 2 in contact with the pick 1 forms a docking patch 2. The docking patch 2 is recessed in the direction away from the metal block 4 to form a groove. The two sides of the metal block 4 extend to the grooves on both sides of the pick 1 respectively. The diameter of the metal block 4 is appropriately increased to better prevent sawing.

[0027] The outer surface of the metal block 4 is provided with a plurality of blocks 5, and the plurality of blocks 5 are arranged at intervals on the outer surface of the metal block 4, and the adjacent two blocks 5 are arranged at intervals and staggered; and the outer surface of the block 5 is a polished arc surface, and the thickness of the block 5 gradually decreases along the direction from the middle of the block 5 to the outer periphery of the block 5; in this way, when an outsider uses a tool to saw the lock tongue to the position of the metal block 4, the polished surface on the surface of the block 5 can cause the tool to slip, and the thickness of the block 5 decreases from the middle of the block 5 to the outer periphery. The staggered arrangement of the blocks 5, coupled with the rotation of the metal block 4, can make the tool used for sawing unable to stay in one place for sawing, and the sawing position keeps changing, thereby increasing the difficulty of sawing.

[0028] There are multiple cone-shaped protrusions 6 between adjacent blocks 5, and the height of the protrusions 6 is greater than the height of the outer periphery of the block 5. The multiple protrusions 6 are staggered and arranged between the blocks 5. When the tool slips due to the surface of the block 5 and slides between two blocks 5, the protrusions 6 located between the two blocks 5 can cause the tool to wear. Since the blocks 5 are staggered, the tool cannot stay between two of the blocks 5 and will continue to slide to the next protrusion 6. In this way, the tool can continue to wear while effectively reducing the damage to the protrusion 6 caused by the tool.

[0029] Furthermore, the interior of the metal block 4 is hollow, and the connecting shaft 7 can also rotate relative to the pick 1. A roller 10 is provided on the connecting shaft 7. The roller 10 is located inside the metal block 4, and the roller 10 and the metal block 4 are separated. When the metal block 4 is cut, the roller 10 takes over and continues to roll, so that the tool cannot be fixed in a fixed position, thereby increasing the difficulty of sawing; and the surface of the roller 10 is also provided with a plurality of protrusions with an arc-shaped polished outer surface. The plurality of protrusions are staggered, so that the tool continues to slip during the sawing process, further increasing the difficulty of sawing; and a plurality of cone-shaped protrusions 6 are also provided between the protrusions to continue to wear the damaged tool.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Anti-saw-off lock tongue, characterized in that: The invention comprises a pick, an anti-saw cut structure and a plurality of patches; the anti-saw cut structure is provided on the pick, and the plurality of patches are respectively overlapped and arranged on both sides of the pick; the anti-saw cut structure comprises a movable metal block, and the metal block is movable relative to the pick; The metal block is cylindrical and can roll relative to the paddle; The outer surface of the metal block is provided with a plurality of blocks, which are arranged at intervals on the outer surface of the metal block, and two adjacent blocks are arranged at intervals and staggered; The outer surface of the block is a polished arc surface, and the thickness of the block gradually decreases from the middle of the block to the outer periphery of the block; Cone-shaped protrusions are provided between adjacent blocks, and the height of the protrusions is greater than the height of the periphery of the blocks.

2. The anti-saw-off lock tongue according to claim 1, characterized in that: The plectrum is provided with a mounting hole for mounting the anti-saw-off structure, and the mounting hole extends along the length direction of the plectrum; the anti-saw-off structure is mounted in the mounting hole, and the metal block rolls in the mounting hole.

3. The anti-saw-off lock tongue according to claim 2, characterized in that: The two sides of the mounting hole extend away from each other to form an inner groove, and the anti-saw-off structure includes a connecting shaft, the two ends of the connecting shaft are respectively embedded in the two inner grooves and connected to the pick; a sleeve is provided on the connecting shaft, the diameter of the sleeve is larger than the diameter of the connecting shaft, and a plurality of spaced connecting strips are provided on the sleeve, and the ends of the plurality of connecting strips extend to the metal block and are fixed to the metal block.

4. The anti-saw-off lock tongue according to any one of claims 1 to 2, characterized in that: The diameter of the metal block is greater than the thickness of the pick, and the patch in contact with the pick forms a docking patch. The docking patch is recessed in a direction away from the metal block to form a groove, and both sides of the metal block extend to the grooves located on both sides of the pick respectively.

5. The anti-saw-off lock tongue according to any one of claims 1 to 2, characterized in that: A plurality of the patches are overlapped and riveted with the pick.

6. The anti-saw-off lock tongue according to any one of claims 1 to 2, characterized in that: The metal block is chrome steel.

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