Multi-gear locking pliers with four-gear outward supporting function

Abstract

The utility model relates to the technical field of plier tools, in particular to a multi-gear locking plier with a four-gear outward supporting function, which comprises a fixed handle, a movable handle is arranged on the lower side of the fixed handle, the left end of the movable handle and the left end of the fixed handle are connected with a plier plate through rivets, and an outer supporting plier head is arranged at the left end of the fixed handle. The outer supporting plier head comprises an upper supporting claw and a lower supporting claw, the upper supporting claw is arranged at the left end of the fixed handle, the right end of the upper supporting claw is fixedly connected with the fixed handle, the lower supporting claw is arranged on the lower side of the upper supporting claw, and the problem that an existing locking plier can only clamp a workpiece inwards and cannot support and clamp the workpiece outwards is solved through the design. According to the locking pliers, the outer supporting plier head designed in a split type structure can extend into a workpiece, outward supporting and clamping of the workpiece are achieved, meanwhile, the multi-gear adjusting function is achieved, the workpieces of different sizes and shapes can be supported conveniently, and the application range of the locking pliers is greatly expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of pliers tools, in particular to a multi-position locking pliers with a four-position outward supporting function, aiming to solve the technical problem that the existing locking pliers can only clamp workpieces inwardly but cannot support and clamp the workpieces outwardly. Background Art

[0002] Locking pliers are a versatile pliers tool that is widely used in various industrial, maintenance and home environments. Its main design feature is that it can firmly clamp objects and maintain a stable clamping force, and will not loosen even when subjected to external forces. The working principle of locking pliers is based on the principle of leverage, and the movement of the handle is converted into the clamping force of the jaws. Usually this force can be amplified, so it is called "powerful" pliers.

[0003] The existing locking pliers tool has the main function of fixing the workpiece by clamping inwards, which plays an important role in many mechanical processing and maintenance occasions. However, in practical applications, when it is necessary to support and clamp the workpiece outwards, the locking pliers cannot achieve this purpose and cannot meet the use requirements. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a multi-position locking pliers with a four-position outward support function. Through ingenious structural design, it can achieve multi-position outward support clamping of the workpiece, greatly expanding the application range of the locking pliers.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A multi-speed locking pliers with a four-speed outward support function comprises a fixed handle and a movable handle, a movable handle is arranged on the lower side of the fixed handle, the left ends of the movable handle and the fixed handle are connected to the pliers plate by rivets, an external support pliers head is arranged on the left end of the fixed handle, a fine-tuning screw is threadedly assembled inside the right end of the fixed handle, a labor-saving connecting rod is connected to the inner side of the movable handle by rivets, a tension spring is assembled at the connection between the inner wall of the fixed handle and the pliers plate, a quick-release handle is assembled on the right side of the movable handle, the external support pliers head comprises an upper support claw and a lower support claw, the upper support claw is arranged at the left end of the fixed handle, and its right end is fixedly connected to the fixed handle, and the lower support claw is arranged on the lower side of the upper support claw.

[0007] Furthermore, a group of vertically structured connecting strips are welded and fixed to the front end surface of the upper supporting claw, and the connecting strips are rotatably connected to the lower supporting claw via positioning rivets.

[0008] Furthermore, a connecting hole is provided inside the lower supporting claw, and a plurality of penetrating positioning through holes are provided inside the connecting strip. The inner diameter of the positioning through hole is the same as the inner diameter of the connecting hole, and the positioning rivet passes through the positioning through hole and is inserted into the connecting hole inside the lower supporting claw.

[0009] Furthermore, an upper limit boss protruding outward is provided on the upper side surface of the upper support claw near the left end, and the upper limit boss and the upper support claw are an integrally formed structure. A lower limit boss is provided on the lower side surface of the lower support claw near the left end, and the lower limit boss and the lower support claw are an integrally formed structure.

[0010] Furthermore, a layer of rubber gasket is fixedly provided on the upper side surface of the upper support claw on the left side of the upper limit boss and on the lower side surface of the lower support claw on the left side of the lower limit boss.

[0011] Furthermore, the right end of the lower supporting claw is configured as a downwardly inclined special-shaped structure, and the right end thereof is in contact with the surface of the clamp plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model has an external support pliers head with a split structural design, which can be inserted into the inside of the workpiece to achieve outward support and clamping of the workpiece. At the same time, it has a multi-speed adjustment function, which is convenient for supporting workpieces of different sizes and shapes, greatly expanding the application range of the pliers.

[0014] 2. In the utility model, the lower supporting claw and the connecting strip are rotatably connected by positioning rivets. The positioning rivets not only fix the relative positions of the connecting strip and the lower supporting claw, but also allow the lower supporting claw to rotate relative to the upper supporting claw within a certain range, thereby realizing external support of the pliers head. At the same time, the lower supporting claw has a multi-speed adjustment function through the provision of multiple groups of positioning through holes. By inserting the positioning rivets into different positioning through holes and connecting them with the lower supporting claw, the opening and closing degree of the lower supporting claw and the upper supporting claw can be adjusted to facilitate the support of workpieces of different sizes and shapes.

[0015] 3. The utility model provides a limiting support function for the upper support claw and the lower support claw by setting an upper limit boss and a lower limit boss, so that the upper support claw and the lower support claw can be firmly connected to the workpiece. When the outer support clamp head is closed, the upper and lower limit bosses work together to ensure the stability and safety of the outer support clamp head when clamping the workpiece.

[0016] 4. The utility model plays a buffering role through the gasket, which can reduce the direct pressure of the upper support claw and the lower support claw on the workpiece surface, avoid scratching or damaging the workpiece surface during the clamping process, and at the same time, the surface of the rubber gasket is rough, which can increase the friction with the workpiece surface, prevent sliding or falling off during the clamping process, and improve the stability and safety of clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a front view of the utility model.

[0019] Figure 3 It is a schematic diagram of the structure of the foreign and domestic support clamp heads of the utility model.

[0020] Figure 4 It is a structural schematic diagram of the upper supporting claw in the utility model.

[0021] Figure 5 It is a structural schematic diagram of the lower supporting claws in the utility model.

[0022] In the figure: 1. External supporting pliers head; 11. Upper supporting claw; 12. Lower supporting claw; 13. Positioning rivet; 14. Upper limit boss; 15. Gasket; 16. Connecting strip; 17. Positioning through hole; 18. Connecting hole; 19. Lower limit boss; 2. Fixed handle; 3. Fine-adjusting screw; 4. Clamp plate; 5. Movable handle; 6. Quick-release handle; 7. Tension spring; 8. Labor-saving connecting rod. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example:

[0025] like Figures 1 to 5As shown, a multi-speed locking pliers with a four-speed outward supporting function comprises a fixed handle 2 and a movable handle 5, the movable handle 5 is arranged on the lower side of the fixed handle 2, the movable handle 5 and the left ends of the fixed handle 2 are connected to the pliers plate 4 by rivets, an external supporting pliers head 1 is arranged on the left end of the fixed handle 2, a fine-tuning screw 3 is threadedly assembled inside the right end of the fixed handle 2, a labor-saving connecting rod 8 is connected to the inner side of the movable handle 5 by rivets, a tension spring 7 is assembled at the connection between the inner wall of the fixed handle 2 and the pliers plate 4, a quick-release handle 6 is assembled on the right side of the movable handle 5, the external supporting pliers head 1 comprises an upper supporting claw 11 and a lower supporting claw 12, the upper supporting claw 11 is arranged on the left end of the fixed handle 2, and its right end is fixedly connected to the fixed handle 2, the lower supporting claw 12 is arranged on the lower side of the upper supporting claw 11, this design solves the problem that the existing locking pliers can only clamp the workpiece inwardly but cannot support and clamp the workpiece outwardly.

[0026] A group of vertical connecting strips 16 are welded and fixed on the front end surface of the upper supporting claw 11. The connecting strips 16 are rotatably connected to the lower supporting claw 12 through positioning rivets 13. The connecting strips 16 serve as a connecting bridge between the upper supporting claw 11 and the lower supporting claw 12, and play a role in connecting and transmitting force.

[0027] A connection hole 18 is provided inside the lower support claw 12, and a plurality of positioning through holes 17 are provided inside the connecting bar 16. The inner diameter of the positioning through hole 17 is the same as that of the connecting hole 18. The positioning rivet 13 passes through the positioning through hole 17 and is inserted into the connecting hole 18 inside the lower support claw 12. The lower support claw 12 and the connecting bar 16 are rotatably connected by the positioning rivet 13. The positioning rivet 13 not only fixes the relative position of the connecting bar 16 and the lower support claw 12, but also allows the lower support claw 12 to rotate relative to the upper support claw 11 within a certain range, thereby realizing the external support of the pliers head 1. At the same time, the plurality of positioning through holes 17 are provided to enable the lower support claw 12 to have a multi-gear adjustment function. By inserting the positioning rivet 13 into different positioning through holes 17 and connecting with the lower support claw 12, the opening and closing degree of the lower support claw 12 and the upper support claw 11 can be adjusted, so as to support workpieces of different sizes and shapes.

[0028] An upper limit boss 14 is provided near the left end of the upper side surface of the upper support claw 11, and the upper limit boss 14 and the upper support claw 11 are an integrally formed structure. A lower limit boss 19 is provided near the left end of the lower side surface of the lower support claw 12, and the lower limit boss 19 and the lower support claw 12 are an integrally formed structure. The upper limit boss 14 and the lower limit boss 19 provide a limit support function for the upper support claw 11 and the lower support claw 12, so that the upper support claw 11 and the lower support claw 12 can be firmly connected to the workpiece. When the outer support clamp head 1 is closed, the upper and lower limit bosses 19 work together to ensure the stability and safety of the outer support clamp head 1 when clamping the workpiece.

[0029] A layer of rubber gasket 15 is fixedly arranged on the upper side surface of the upper support claw 11 on the left side of the upper limit boss 14 and on the lower side surface of the lower support claw 12 on the left side of the lower limit boss 19. The gasket 15 plays a buffering role, which can reduce the direct pressure of the upper support claw 11 and the lower support claw 12 on the surface of the workpiece, and avoid scratching or damaging the surface of the workpiece during the clamping process. At the same time, the surface of the rubber gasket 15 is rough, which can increase the friction with the surface of the workpiece, prevent sliding or falling off during the clamping process, and improve the stability and safety of the clamping.

[0030] The right end of the lower support claw 12 is set to a downwardly inclined special-shaped structure, and its right end is in contact with the surface of the nipper plate 4. The special-shaped structure allows the right end of the lower support claw 12 to always be in contact with the surface of the nipper plate 4, and can be more firmly fixed on the surface of the nipper plate 4 when clamping the workpiece, reducing looseness caused by vibration or external force, thereby improving clamping stability, and at the same time, the force can be more effectively transmitted from the nipper plate 4 to the lower support claw 12.

[0031] The working principle of the multi-speed locking pliers with four-speed outward support function is as follows: when using, first open the movable handle 5 and the fixed handle 2, at which time the heads of the upper support claw 11 and the lower support claw 12 are closed, and then the upper support claw 11 and the lower support claw 12 are placed in the workpiece, and when the upper limit boss 14 and the lower limit boss 19 on the upper support claw 11 and the lower support claw 12 are both against the workpiece, close the movable handle 5 and the fixed handle 2, and at this time the upper support claw 11 and the lower support claw 12 are stressed, and the heads of both support the inner wall of the workpiece outward, support from the inside of the workpiece, and then take out the workpiece. When it is necessary to adjust the opening amount of the upper support claw 11 and the lower support claw 12, the positioning rivet 13 can be moved to connect the lower support claw 12 to different positioning through holes 17 on the connecting strip 16 to achieve the adjustment of different gears of the lower support claw 12.

[0032] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A multi-position locking pliers with a four-position outward support function, comprising a fixed handle (2) and a movable handle (5), characterized in that: A movable handle (5) is provided at the lower side of the fixed handle (2); the movable handle (5) and the left end of the fixed handle (2) are both connected to the pliers plate (4) via rivets; an external supporting pliers head (1) is provided at the left end of the fixed handle (2); a fine-tuning screw (3) is threadedly mounted inside the right end of the fixed handle (2); a labor-saving connecting rod (8) is connected to the inside of the movable handle (5) via rivets; a tension spring (7) is mounted at the connection between the inner wall of the fixed handle (2) and the pliers plate (4); and a quick-release handle (6) is mounted on the right side of the movable handle (5); The external support pliers head (1) comprises an upper support claw (11) and a lower support claw (12); the upper support claw (11) is arranged at the left end of the fixed handle (2), and its right end is fixedly connected to the fixed handle (2); the lower support claw (12) is arranged at the lower side of the upper support claw (11).

2. The multi-position locking pliers with four-position outward support function according to claim 1, characterized in that: A group of vertically structured connecting bars (16) are welded and fixed to the front end surface of the upper supporting claw (11), and the connecting bars (16) are rotatably connected to the lower supporting claw (12) via positioning rivets (13).

3. The multi-position locking pliers with four-position outward support function according to claim 2, characterized in that: A connecting hole (18) is provided inside the lower supporting claw (12), and a plurality of penetrating positioning through holes (17) are provided inside the connecting strip (16). The inner diameter of the positioning through holes (17) is the same as the inner diameter of the connecting holes (18), and the positioning rivets (13) pass through the positioning through holes (17) and are inserted into the connecting holes (18) inside the lower supporting claw (12).

4. The multi-position locking pliers with four-position outward support function according to claim 3, characterized in that: An upper limit boss (14) protruding outward is provided on the upper side surface of the upper supporting claw (11) near the left end, and the upper limit boss (14) and the upper supporting claw (11) are an integrally formed structure. A lower limit boss (19) is provided on the lower side surface of the lower supporting claw (12) near the left end, and the lower limit boss (19) and the lower supporting claw (12) are an integrally formed structure.

5. The multi-position locking pliers with four-position outward support function according to claim 4, characterized in that: A layer of rubber gasket (15) is fixedly provided on the upper side surface of the upper support claw (11) on the left side of the upper limit boss (14) and on the lower side surface of the lower support claw (12) on the left side of the lower limit boss (19).

6. The multi-position locking pliers with four-position outward support function according to claim 5, characterized in that: The right end of the lower supporting claw (12) is arranged as a downwardly inclined special-shaped structure, and the right end is in contact with the surface of the clamp plate (4).

Images