Safety cutting pliers with locking function

Abstract

The invention relates to the technical field of shearing pliers, and discloses safe shearing pliers with a locking function, the safe shearing pliers comprise a first pliers body, a second pliers body is rotatably arranged in the first pliers body, and rubber sleeves are fixed on the outer walls of the first pliers body and the second pliers body; the locking assembly is connected to the rubber sleeve and used for rapidly locking the first clamp body and the second clamp body; the locking assembly comprises a first connecting plate, the upper surface of the first connecting plate is fixed to the rubber sleeve, a first meshing block is fixed to the outer wall of the first connecting plate, a second connecting plate is slidably connected to the outer wall of the second clamp body, an inserting rod is slidably arranged in the second connecting plate, and the outer wall of the inserting rod is slidably arranged in the second clamp body. Through cooperation of internal structures of the locking assembly, the effects that the cutting pliers cannot rotate easily after being locked, and opening of the cutting pliers is avoided are achieved, and the problems that when the cutting pliers are not used, the cutting pliers are prone to being opened accidentally, and accidental cutting is caused or a jaw is damaged are solved.

Description

Technical Field

[0001] The invention relates to the technical field of shearing pliers, in particular to a safety shearing pliers with a locking function. Background Art

[0002] Cables are made of one or more mutually insulated conductors and an outer insulating protective layer. They can transmit electricity or information from one place to another. They are usually made of several or several groups of wires (at least two in each group) twisted together to form a rope-like cable. Each group of wires is insulated from each other and often twisted around a center. The entire outer layer is covered with a highly insulating covering. Cables have the characteristics of being energized inside and insulated outside. Electricians often need to carry a variety of tools when working, and shears are usually required when repairing cables.

[0003] The main structure of existing shearing pliers usually includes a pliers handle and a pliers head. The pliers handle is used to provide the operating hand-gripping torque, while the pliers head contains a shearing blade or a clamping structure for realizing the shearing operation. However, although this simple structural design is effective in the shearing process, there is often a serious problem when not in use. That is, due to the lack of an effective locking mechanism, the shearing pliers are easily accidentally opened by a slight external force during placement or carrying. The sudden opening of the pliers head may cause two safety hazards.

[0004] On the one hand, the sharp cutting edges are exposed, which can easily cause accidental cuts to the user or other contact persons, especially in complex working environments or limited storage space, the risk is greatly increased. On the other hand, when the pliers head is accidentally opened, the cutting edges of the pliers may be damaged or worn due to the tool falling, collision or improper storage, thereby reducing the cutting performance of the pliers and even affecting its service life. This not only increases the cost of maintenance and tool replacement, but also affects work efficiency. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a safety shearing pliers with a locking function, which solves the problem that the main structure of the existing shearing pliers usually includes a pliers handle and a pliers head, and the shearing pliers are easily opened accidentally when not in use, causing accidental cuts or damage to the jaws.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a safety shear pliers with a locking function, comprising a first pliers body, inside which a second pliers body is rotated, and the outer walls of the first pliers body and the second pliers body are both fixed with rubber sleeves; a locking assembly, which is connected to the rubber sleeve and is used to quickly lock the first pliers body and the second pliers body; the locking assembly comprises a connecting plate 1, the upper surface of the connecting plate 1 is fixed to the rubber sleeve, the outer wall of the connecting plate 1 is fixed with an engaging block 1, the outer wall of the second pliers body is slidably connected with a connecting plate 2, the inside of the connecting plate 2 is slidably provided with an insert rod, the outer wall of the insert rod slides inside the second pliers body, the outer wall of the connecting plate 2 is fixed with an engaging block 2, and the engaging block 1 and the engaging block 2 are engaged with each other.

[0007] Preferably, the outer walls of the connecting plate 1 and the connecting plate 2 are both fixed with a shell, the outer wall of the shell is rotatably provided with a handle, the outer wall of the handle is fixed with a block, the outer wall of the block is rotatably provided with a transmission rod, the end of the transmission rod is rotatably provided with one end of spring 1, the other end of spring 1 is rotated inside the shell, a connecting head is fixed inside the shell, the connecting head and the distant blocks are engaged with each other, and the first caliper body and the second caliper body are quickly locked by engaging two groups of connecting heads and blocks with each other, and a limiting column is fixed inside the shell, and the limiting column and the outer wall of the block are meshed.

[0008] Preferably, the internal thread of the first caliper body is connected with a second bolt, and the outer wall of the second bolt slides inside the second caliper body.

[0009] Preferably, a slide groove is provided inside the second caliper body, the outer wall of the second bolt is arranged inside the slide groove, and a handle is provided on the outer wall of the second bolt for rotation.

[0010] Preferably, the outer walls of the first clamp body and the second clamp body are both fixed with anti-slip teeth, and the first clamp body and the second clamp body are both fixed with stripping teeth.

[0011] Preferably, connecting blocks are slidably provided inside the first pliers body and the second pliers body, and shearing edges are fixed on the outer walls of the connecting blocks, and the outer walls of the shearing edges slide inside the shearing edges.

[0012] Preferably, the interior of the connecting block is threadedly connected with bolt 1, the outer wall of the bolt 1 is threadedly connected to the interior of the first caliper body, the outer wall of the bolt 1 is threadedly connected with a nut, and the outer wall of the bolt 1 is rotatably provided with a connecting ring.

[0013] Preferably, an articulated block 1 is fixed on the lower surface of the rubber sleeve, one end of a spring 2 is fixed inside the articulated block 1, an articulated block 2 is fixed to the other end of the spring 2, the lower surface of the articulated block 2 is fixed to a rubber sleeve connected to the second caliper body, and a tether hole is opened inside the rubber sleeve.

[0014] Preferably, a rotating shaft is rotatably disposed at the end of the second pliers body, a wrench is rotatably disposed on the outer wall of the rotating shaft, and a cutting knife is rotatably disposed on the outer wall of the rotating shaft.

[0015] Working principle: When the device needs to be used, the locking component can keep the jaws of the shearing pliers locked during use to prevent them from accidentally opening when not in use. First, the outer walls of the first pliers body and the second pliers body are covered with rubber sleeves to provide an anti-slip function, and the locking function is achieved through the cooperation between the meshing block 1 and the meshing block 2. When the connecting plate 1 interacts with the connecting plate 2, the plug rod will slide inside the second pliers body to quickly lock the connecting plate 2. At this time, the connecting head and the card block are engaged with each other and reset under the action of spring 1. The limit column further provides stability. When unlocking is required, the transmission rod is driven to rotate by rotating the handle to release the locking card block to unlock the pliers body. During operation, the anti-slip teeth The stripping teeth are used to fit tightly and fix the cable sheath, while achieving the dual functions of stripping and cutting. The shearing blade is replaceably installed through the threaded connection between the connecting block and bolt one, and its tightness is adjusted by rotating the nut. The shearing blade can slide to the appropriate position as needed during the cutting process. The slide groove is embedded in the interior of the second pliers body, and the distance between the pliers bodies is adjusted by adjusting the bolt two and cooperating with the handle to meet the cutting needs of cable sheaths of different specifications. Articulated block one and articulated block two provide stable support through spring two to maintain the integrity of the tool structure. The relative rotation of the rotating shaft and the wrench drives the cutting knife to cut efficiently, so that the invention can efficiently and safely complete the stripping and cutting work.

[0016] The present invention provides a safety shearing pliers with a locking function. It has the following beneficial effects:

[0017] 1. The present invention achieves the effect of preventing the shearing pliers from rotating easily after being locked and preventing the shearing pliers from opening by cooperating between the internal structures of the locking assembly, thereby solving the problem that the main structure of the existing shearing pliers usually includes a pliers handle and a pliers head, and the shearing pliers are easy to open accidentally when not in use, causing accidental cuts or damage to the jaws.

[0018] 2. The present invention achieves the function of adding cutting to the stripping teeth through the cooperation between the shearing edge and the replacement parts, and the cutting edge can be replaced without the aid of tools. This not only improves the flexibility of the stripping and cutting operations, but also solves the problem that the replacement of the shearing edge in traditional tools is complicated and requires additional tools.

[0019] 3. The present invention achieves the purpose of facilitating the adjustment of the distance between the first clamp body and the second clamp body and facilitating the cutting of cable casings of different types through the cooperation between the slide groove, the second bolt and the handle and other structures, thereby solving the inconvenience of frequent replacement or manual adjustment of tools required for existing cutting tools when processing cables of different specifications, and greatly improving the operating efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the rod insertion part of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the outer shell part of the present invention;

[0023] Figure 4 It is a schematic diagram of the internal structure of the housing of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the handle part of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the second clamp body part of the present invention;

[0026] Figure 7 It is a schematic structural diagram of the first clamp body part of the present invention;

[0027] Figure 8 It is a partial structural schematic diagram of the connecting block of the present invention.

[0028] Among them, 1. the first pliers body; 2. the second pliers body; 3. the rubber sleeve; 4. the locking assembly; 401. the connecting plate 1; 402. the connecting plate 2; 403. the meshing block 1; 404. the meshing block 2; 405. the outer shell; 406. the grip; 407. the block; 408. the transmission rod; 409. the spring 1; 410. the connector; 411. the limit column; 412. the plug rod; 5. the anti-skid teeth; 6. the stripping teeth; 7. the shearing edge; 8. the bolt 1; 9. the connecting ring; 10. the connecting block; 11. the nut; 12. the slide groove; 13. the bolt 2; 14. the handle; 15. the tether hole; 16. the hinge block 1; 17. the spring 2; 18. the hinge block 2; 19. the rotating shaft; 20. the wrench; 21. the cutting knife. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Please see attached Figure 1 - Attachment Figure 4 The embodiment of the present invention provides a safety shear pliers with a locking function, comprising a first pliers body 1, in which a second pliers body 2 is rotated, and the outer walls of the first pliers body 1 and the second pliers body 2 are both fixed with rubber sleeves 3; a locking assembly 4, which is connected to the rubber sleeve 3 and is used to quickly lock the first pliers body 1 and the second pliers body 2; the locking assembly 4 comprises a connecting plate 1 401, the upper surface of the connecting plate 1 401 is fixed to the rubber sleeve 3, the outer wall of the connecting plate 1 401 is fixed with an engagement block 1 403, the outer wall of the second pliers body 2 is slidably connected with a connecting plate 2 402, the interior of the connecting plate 2 402 is slidably provided with an insertion rod 412, the outer wall of the insertion rod 412 slides inside the second pliers body 2, the outer wall of the connecting plate 2 402 is fixed with an engagement block 2 404, the engagement block 1 403 and the engagement block 403 are fixed to the engagement block 404. The second engaging block 404 is meshed with each other, and the outer walls of the connecting plate 1 401 and the connecting plate 2 402 are fixed with a shell 405, and a handle 406 is rotatably provided on the outer wall of the shell 405, and a block 407 is fixed on the outer wall of the handle 406, and a transmission rod 408 is rotatably provided on the outer wall of the block 407, and one end of a spring 1 409 is rotatably provided on the end of the transmission rod 408, and the other end of the spring 1 409 is rotated inside the shell 405, and a connector 410 is fixed inside the shell 405, and the connector 410 and the block 407 which are far away from each other are engaged with each other, and the first pliers body 1 and the second pliers body 2 are quickly locked by engaging two groups of connectors 410 and the block 407 with each other, and a limiting column 411 is fixed inside the shell 405, and the limiting column 411 and the outer wall of the block 407 are meshed with each other.

[0031] Specifically, through the action of the locking assembly 4, the shearing pliers can maintain the locked state of the jaws when in use, preventing them from accidentally opening due to external force or misoperation when not in use, thereby improving safety, and realizing the locking function through the precise mechanical cooperation between the meshing block 1 403 and the meshing block 2 404. The meshing angle and tooth pitch design between the meshing blocks make the locking process more stable and reliable, avoiding looseness after locking. When the connecting plate 1 401 interacts with the connecting plate 2 402, the insert rod 412 slides inside the second pliers body 2. The sliding process of the insert rod 412 is ensured to be smooth and unobstructed by its precise guide rail design, and at the same time, the connecting plate 2 402 can be quickly locked in place, thereby accelerating the response speed and accuracy of the locking operation. At this time, the connector 410 and the clamping block 407 are realized through precise clamping points. The mutual engagement provides additional locking stability, and under the action of spring 409, the block 407 can automatically reset to ensure that the state remains stable after the operation is completed. The limit column 411 further provides limit protection for the locking mechanism through its mechanical structure, avoiding accidental loosening or structural damage caused by excessive operation. When unlocking is required, the user only needs to rotate the handle 406 to drive the transmission rod 408 to rotate, and the rotation movement of the transmission rod 408 drives the block 407 to loosen the locking structure, thereby unlocking the pliers body. During the unlocking process, the entire operation is smooth and no additional tools are required, which further improves the convenience and safety of the operation. Through the cooperation of this structure, the user can easily and quickly complete the locking and unlocking operations of the shearing pliers, while preventing the risk of accidental opening and cutting during carrying or storage.

[0032] Please see attached Figure 5 - Attachment Figure 8 The internal thread of the first pliers body 1 is connected with a bolt 2 13, the outer wall of the bolt 2 13 slides inside the second pliers body 2, a slide groove 12 is opened inside the second pliers body 2, the outer wall of the bolt 2 13 is arranged inside the slide groove 12, and a handle 14 is rotated on the outer wall of the bolt 2 13, the outer walls of the first pliers body 1 and the second pliers body 2 are fixed with anti-slip teeth 5, the first pliers body 1 and the second pliers body 2 are fixed with stripping teeth 6, the interiors of the first pliers body 1 and the second pliers body 2 are slid with a connecting block 10, the outer walls of the connecting block 10 are fixed with a shearing edge 7, the outer wall of the shearing edge 7 slides inside the shearing edge 7, the interior of the connecting block 10 is threadedly connected with a bolt 8, the outer wall of the bolt 8 is threadedly connected to the interior of the first pliers body 1, the outer wall of the bolt 8 is threadedly connected to a nut 11, and the outer wall of the bolt 8 is rotated with a connecting ring 9.

[0033] Specifically, the shearing blade 7 is replaceably installed through the threaded connection of the connecting block 10 and the bolt 8. The designed threaded structure makes it unnecessary to use additional tools when replacing the shearing blade 7. The user only needs to rotate to complete the replacement operation, and the tightness of the shearing blade 7 can be accurately adjusted by rotating the nut 11 to ensure that the blade will not loosen during the shearing process. The shearing blade 7 can slide to an appropriate position according to actual needs during the shearing process. With the design of the slide groove 12, the slide groove 12 is embedded in the interior of the second pliers body 2 to ensure that the sliding process is smooth and stable. The distance between the pliers bodies can be changed by adjusting the bolt 13. The linkage design of the bolt 13 and the handle 14 makes the adjustment process simple and intuitive, and the user can quickly adjust the opening size of the shearing pliers to suit In response to the cutting requirements of cable sheaths 405 of different specifications, the versatility and practicality of the device are further enhanced. The hinge block 16 and the hinge block 2 18 provide stable support through the spring 2 17. The elastic force of the spring can effectively absorb the vibration and impact generated during the operation, maintain the integrity of the tool structure and extend the service life. The relative rotation of the shaft 19 and the wrench 20 amplifies the force applied by the hand through the lever principle, thereby driving the cutting knife 21 to perform efficient cutting. The design of the cutting knife 21 combines the manufacturing of high-hardness materials to ensure its durability and cutting accuracy under frequent use, so that the invention can efficiently and safely complete the stripping and cutting of the cable sheath, which not only improves work efficiency, but also greatly reduces the work intensity of the operator.

[0034] Please see attached Figure 1 A hinge block 16 is fixed to the lower surface of the rubber sleeve 3, one end of a spring 17 is fixed inside the hinge block 16, and a hinge block 18 is fixed to the other end of the spring 17. The lower surface of the hinge block 18 is fixed to the rubber sleeve 3 connected to the second pliers body 2, and a tether hole 15 is opened inside the rubber sleeve 3. A rotating shaft 19 is rotated at the end of the second pliers body 2, a wrench 20 is rotated on the outer wall of the rotating shaft 19, and a cutting knife 21 is rotated on the outer wall of the rotating shaft 19.

[0035] Specifically, the articulated block 16 is designed to enhance the overall structural stability of the shearing pliers, and at the same time, one end of a spring 2 17 is fixed inside the articulated block 16. The design of the spring 2 17 enables the shearing pliers to have a certain rebound function during use, which can effectively buffer the impact force generated by operation and protect the pliers structure from wear and tear during long-term use. The other end of the spring 2 17 is fixed on the articulated block 2 18. The articulated block 2 18 is further connected to the second pliers body 2 to stabilize the relative position between the two pliers bodies, ensuring that the structure will not be displaced during cutting or peeling. A tether hole 15 is provided inside the rubber sleeve 3. The existence of the tether hole 15 provides users with the function of easy carrying and storage. Users can hang or fix the shearing pliers at a specific position through a tether to avoid work The tool is lost or dropped, the end of the second pliers body 2 is connected to the wrench 20 through the rotating shaft 19. The design of the rotating shaft 19 enables the wrench 20 to rotate freely, thereby driving the cutting knife 21 connected thereto to perform rotating cutting. The rotating connection design between the outer wall of the rotating shaft 19 and the cutting knife 21 can ensure that the cutting knife 21 remains stable and efficient during use. The cutting knife 21 can effectively cut the cable sheath or other materials through the rotation action, and it is made of high-strength material to ensure that it can remain sharp and durable under high-load use. Through the cooperation of these components, the entire shearing pliers not only maintains stability and efficiency during operation, but also has good durability and ease of operation, which greatly improves the user's operating safety and efficiency in different work scenarios.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety shear pliers with locking function, characterized in that: include: A first clamp body (1), inside which a second clamp body (2) is rotated, and outer walls of the first clamp body (1) and the second clamp body (2) are both fixed with rubber sleeves (3); A locking assembly (4) connected to the rubber sleeve (3) and used for quickly locking the first clamp body (1) and the second clamp body (2); The locking assembly (4) comprises a connecting plate 1 (401), the upper surface of which is fixed on the rubber sleeve (3), an outer wall of which is fixed an engaging block 1 (403), an outer wall of which is slidably connected to a connecting plate 2 (402), an insert rod (412) slidingly disposed inside the connecting plate 2 (402), an outer wall of which slides inside the second pliers body (2), an engaging block 2 (404) fixed on the outer wall of the connecting plate 2 (402), and the engaging block 1 (403) and the engaging block 2 (404) are engaged with each other.

2. A safety shear pliers with locking function according to claim 1, characterized in that: The outer walls of the connecting plate 1 (401) and the connecting plate 2 (402) are both fixed with a shell (405), the outer wall of the shell (405) is rotatably provided with a handle (406), the outer wall of the handle (406) is fixed with a clamping block (407), the outer wall of the clamping block (407) is rotatably provided with a transmission rod (408), the end of the transmission rod (408) is rotatably provided with one end of a spring 1 (409), and the other end of the spring 1 (409) is rotatably provided on the outer wall of the shell (405). 05), a connector (410) is fixed inside the shell (405), the connector (410) and a distant block (407) are engaged with each other, and the first clamp body (1) and the second clamp body (2) are quickly locked by engaging the two groups of connectors (410) and the block (407), and a limiting column (411) is fixed inside the shell (405), and the limiting column (411) and the outer wall of the block (407) are engaged with each other.

3. The safety shear pliers with locking function according to claim 1, characterized in that: The first caliper body (1) is internally threadedly connected with a second bolt (13), and the outer wall of the second bolt (13) slides inside the second caliper body (2).

4. The safety shear pliers with locking function according to claim 3, characterized in that: A slide groove (12) is provided inside the second pliers body (2), the outer wall of the second bolt (13) is arranged inside the slide groove (12), and a handle (14) is provided on the outer wall of the second bolt (13) for rotation.

5. The safety shear pliers with locking function according to claim 1, characterized in that: The outer walls of the first clamp body (1) and the second clamp body (2) are both fixed with anti-slip teeth (5), and the first clamp body (1) and the second clamp body (2) are both fixed with stripping teeth (6).

6. The safety shear pliers with locking function according to claim 1, characterized in that: A connecting block (10) is slidably mounted inside the first pliers body (1) and the second pliers body (2), a shearing edge (7) is fixed to the outer wall of the connecting block (10), and the outer wall of the shearing edge (7) slides inside the shearing edge (7).

7. The safety shear pliers with locking function according to claim 6, characterized in that: The interior of the connection block (10) is threadedly connected with a bolt (8), the outer wall of the bolt (8) is threadedly connected to the interior of the first caliper body (1), the outer wall of the bolt (8) is threadedly connected with a nut (11), and the outer wall of the bolt (8) is rotatably connected with a connecting ring (9).

8. The safety shear pliers with locking function according to claim 1, characterized in that: A hinge block 1 (16) is fixed on the lower surface of the rubber sleeve (3), one end of a spring 2 (17) is fixed inside the hinge block 1 (16), and a hinge block 2 (18) is fixed to the other end of the spring 2 (17). The lower surface of the hinge block 2 (18) is fixed on a rubber sleeve (3) connected to the second caliper body (2), and a tether hole (15) is provided inside the rubber sleeve (3).

9. The safety shear pliers with locking function according to claim 1, characterized in that: A rotating shaft (19) is rotatably mounted at the end of the second pliers body (2), a wrench (20) is rotatably mounted on the outer wall of the rotating shaft (19), and a cutting knife (21) is rotatably mounted on the outer wall of the rotating shaft (19).

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