Labor-saving clamp holder

Abstract

The labor-saving clamping device comprises a gun shell, an extension pipe is arranged on the gun shell in an extending mode, the outer end of the extension pipe is connected with a clamping head assembly capable of being opened and closed, and a driving assembly used for driving the clamping head assembly to be opened and closed is arranged in the gun shell. The driving assembly comprises a sliding block connected in the gun shell in a sliding mode and a pulley block connected with the sliding block, a traction rope is connected between the pulley block and the chuck assembly, the gun shell is movably connected with a trigger, and the trigger is connected with the sliding block through a transmission structure and used for driving the sliding block to slide and finally driving the traction rope. The device has the advantages of being more labor-saving and more comfortable to operate.

Description

Technical Field

[0001] The invention relates to the technical field of clampers, and in particular to a labor-saving clamper. Background Art

[0002] The prior art garbage clamp and other similar clamps usually adopt a simple lever mechanism, whose main components include a gun-shaped grip and a pair of clamps. The grip is provided with a trigger inside and is directly connected to the clamps through a wire rope. When the user squeezes the trigger, the wire rope is pulled, thereby driving the clamps to close and clamp the target object. After releasing the trigger, the clamps open by their own elasticity or other reset mechanisms.

[0003] However, this traditional clamp design has a significant drawback: since the clamping force is directly transmitted from the user's fingers to the clamp through the trigger and wire rope, the user needs to exert a greater grip force when clamping heavier or harder objects, which can easily cause finger fatigue in the user, especially when it is required for a long time or frequent use. This fatigue will be more obvious. In addition, for some users with weak hand strength, such as the elderly or the disabled, operating this traditional clamp may be very difficult or even impossible to use. This direct drive method also limits the size of the clamping force, making it difficult to effectively clamp objects of different sizes and hardness.

[0004] Therefore, it is necessary to further improve and perfect the prior art to overcome these shortcomings, and the present invention is made based on this situation. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a clamp that is more labor-saving and more comfortable to operate.

[0006] The present invention is achieved through the following technical solutions:

[0007] In order to solve the above technical problems, the present invention provides a labor-saving clamp, including a gun housing, an extension tube extending from the gun housing, the outer end of the extension tube is connected to a chuck assembly that can be opened and closed, the gun housing is provided with a driving assembly for driving the chuck assembly to open and close, the driving assembly includes a slider slidably connected to the gun housing and a pulley group connected to the slider, a pulling rope is connected between the pulley group and the chuck assembly, a trigger is movably connected to the gun housing, the trigger is connected to the slider through a transmission structure, and is used to drive the slider to slide and ultimately drive the pulling rope.

[0008] In order to further solve the technical problem to be solved by the present invention, in a labor-saving clamp provided by the present invention, the pulley group includes a fixed shaft fixedly connected to the gun housing, and a movable shaft movably connected to the gun housing, at least one fixed pulley is rotatably connected to the fixed shaft, and at least one movable pulley is rotatably connected to the movable shaft, a rope is provided between the slider, the fixed pulley and the movable pulley, one end of the rope is connected to the slider, and the other end of the rope is connected to the fixed shaft after passing through the fixed pulley and the movable pulley in turn, and the inner end of the pulling rope is connected to the movable shaft.

[0009] In order to further solve the technical problem to be solved by the present invention, in a labor-saving clamp provided by the present invention, a first swing frame is rotatably connected to the fixed shaft, and the end of the rope is connected to the first swing frame.

[0010] In order to further solve the technical problem to be solved by the present invention, in a labor-saving clamp provided by the present invention, a second swing frame is rotatably connected to the movable shaft, and the inner end of the pulling rope is connected to the second swing frame.

[0011] In order to further solve the technical problem to be solved by the present invention, in a labor-saving clamp provided by the present invention, a first slide groove arranged along the length direction of the extension tube is provided in the gun housing, and the movable shaft is slidably connected in the first slide groove.

[0012] In order to further solve the technical problem to be solved by the present invention, in a labor-saving clamp provided by the present invention, a second slide groove facing the fixed pulley is provided in the gun housing, and the sliding block is slidably connected in the second slide groove.

[0013] In order to further solve the technical problem to be solved by the present invention, in a labor-saving clamp provided by the present invention, the transmission structure adopts an inclined transmission structure.

[0014] In order to further solve the technical problem to be solved by the present invention, in a labor-saving clamp provided by the present invention, the trigger is slidably connected in the gun housing and protrudes outside the gun housing, and the inclined transmission structure includes a driving inclined surface arranged on the trigger, and a pressing head arranged on the slider and extending toward the driving inclined surface; when the user presses the trigger, the driving inclined surface presses the pressing head inwardly as the trigger slides, thereby driving the slider to move in a direction away from the pulley assembly, and finally driving the movement of the chuck assembly.

[0015] In order to further solve the technical problem to be solved by the present invention, in a labor-saving clamp provided by the present invention, the end of the pressing head is provided with a chamfer that can cooperate with the driving inclined surface.

[0016] In order to further solve the technical problem to be solved by the present invention, in a labor-saving clamp provided by the present invention, the chuck assembly includes two jaws rotatably connected to the end of an extension tube, the inner ends of the two jaws are rotatably connected to the same connecting rod, the connecting rod is connected to the outer end of the pulling rope, and an elastic reset member is provided between the connecting rod and the extension tube for pressing the connecting rod in the direction of opening the jaws.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The labor-saving clamp of the present invention realizes force amplification through the pulley group, so that the user only needs to apply a small force to clamp the target object. The fixed pulley changes the direction of the force, and the movable pulley decomposes the force, thereby achieving a labor-saving effect. This design makes the clamping force greater under the same force, and the structure is compact, and the arrangement of various components is more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 is a cross-sectional view of the chuck assembly;

[0022] Figure 3 is an exploded schematic diagram of the drive assembly;

[0023] Figure 4 is a cross-sectional schematic diagram of the present invention;

[0024] Figure 5 It is an exploded schematic diagram of the pulley assembly;

[0025] Figure 6 It is a schematic diagram of the use state of the present invention. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] like Figures 1 to 6 As shown, the labor-saving clamp of the present invention is in the shape of a gun as a whole, and mainly comprises a gun housing 1, an extension tube 2, a clamp assembly 3 and a drive assembly 4.

[0028] The gun housing 1 constitutes the main frame of the clamp, and its shape is similar to a pistol, with a grip portion and a gun body portion. The grip portion is ergonomically designed to facilitate the user to hold it comfortably. The gun body portion is connected to the extension tube 2. The extension tube 2 extends from the front end of the gun housing 1, and the length of the extension tube 2 can be adjusted according to actual needs. The clamp assembly 3 is located at the end of the extension tube 2 and is used to clamp the target object. In this embodiment, the clamp assembly 3 includes two clamping jaws 31, which are respectively fixed to the ends of the extension tube 2 by a rotational connection. The inner ends of the two clamping jaws 31 are rotatably connected to the same connecting rod 32. The connecting rod 32 is connected to the outer end of the pulling rope 43. An elastic reset member 33 (such as a spring) is provided between the connecting rod 32 and the extension tube 2, and its function is to keep the clamping jaws 31 in an open state in the absence of external force, so as to facilitate the clamping of the target object.

[0029] The core of the present invention lies in the design of the driving assembly 4, which cleverly integrates a slider 41, a pulley block 42 and a trigger 44 to achieve the function of labor-saving clamping. The driving assembly 4 mainly includes a slider 41 slidably connected to the inside of the gun housing 1, and a pulley block 42 connected to the slider 41. The pulley block 42 is connected to the chuck assembly 3 through a pulling rope 43, so as to transmit the driving force to the clamping claw. The trigger 44 movably connected on the gun housing 1 is connected to the slider 41 through a transmission structure, which is used to drive the slider 41 to slide, thereby driving the pulling rope 43, and finally realizing the clamping action.

[0030] More specifically, the pulley block 42 includes a fixed shaft 421 fixedly connected to the gun housing 1 and a movable shaft 422 movably connected to the gun housing 1. At least one fixed pulley 423 is rotatably connected to the fixed shaft 421, and at least one movable pulley 424 is rotatably connected to the movable shaft 422. The slider 41, the fixed pulley 423 and the movable pulley 424 are connected to each other through a rope 425. One end of the rope 425 is connected to the slider 41, and the other end of the rope 425 is connected to the first swing frame 426 on the fixed shaft 421 after passing through the fixed pulley 423 and the movable pulley 424 in sequence. The inner end of the pulling rope 43 is connected to the second swing frame 427 on the movable shaft 422, thereby forming a complete pulley system.

[0031] The first swing frame 426 is rotatably connected to the fixed shaft 421, and the second swing frame 427 is rotatably connected to the movable shaft 422. The first swing frame 426 and the second swing frame 427 are both provided with buckles that can quickly clamp the rope, and the length and tension of the rope can be adjusted as needed. By adjusting the fixed position of the rope 425 on the first swing frame 426, the mechanical properties of the pulley block can be fine-tuned. Similarly, by adjusting the fixed position of the pulling rope 43 on the second swing frame 427, the response speed and sensitivity of the clamp can be fine-tuned.

[0032] The present invention adopts the design of the pulley block 42, the purpose of which is to reduce the force required for the user to press the trigger 44. The fixed pulley 423 is mainly used to change the direction of the force, while the movable pulley 424 is used to decompose the force, thereby achieving the effect of saving effort. The combination of the fixed pulley 423 and the movable pulley 424 not only achieves labor saving, but also enables a greater clamping force to be generated under the same force. In addition, this design is also conducive to optimizing the layout of parts and making the overall structure more compact (the pulley block is located at the gripping part of the gun housing 1 and the gun body part).

[0033] In order to guide the movement of the movable shaft 422 and ensure that it moves along a predetermined track, a first slide groove 11 is provided inside the gun housing 1 along the length direction of the extension tube 2, and the movable shaft 422 is slidably connected in the first slide groove 11. Similarly, in order to guide the movement of the slider 41, a second slide groove 12 facing the fixed pulley 423 is also provided inside the gun housing 1, and the slider 41 is slidably connected in the second slide groove 12.

[0034] The transmission structure of the present invention adopts an inclined transmission structure. The trigger 44 is slidably connected in the gun housing 1 and protrudes outside the gun housing 1 for user operation. The inclined transmission structure specifically includes a driving inclined surface 441 arranged on the trigger 44, and a pressing head 411 arranged on the slider 41 and extending toward the driving inclined surface 441. When the user presses the trigger 44, the driving inclined surface 441 presses the pressing head 411 inwardly as the trigger 44 slides, thereby driving the slider 41 to move along the second slide groove 12 in a direction away from the pulley block 42. The movement of the slider 41 ultimately drives the pulling rope 43 and the chuck assembly 3 through the pulley block to achieve a clamping action. In order to improve transmission efficiency and smoothness, the end of the pressing head 411 is provided with a chamfer 412 that cooperates with the driving inclined surface 441.

[0035] In addition, in this embodiment, the trigger 44 is designed to be block-shaped, with a relatively large volume, a height of about nine-tenths of the height of the grip portion, and protrudes from the front side of the grip portion of the gun housing 1. This design conforms to the principle of ergonomics, making the user more comfortable when pressing the trigger and reducing finger fatigue.

Claims

1. A labor-saving clamp, characterized in that: The invention comprises a gun housing (1), an extension tube (2) extending from the gun housing (1), an outer end of the extension tube (2) being connected to a chuck assembly (3) that can be opened and closed, a driving assembly (4) for driving the chuck assembly (3) to open and close being provided in the gun housing (1), the driving assembly (4) comprising a slider (41) slidably connected to the gun housing (1) and a pulley block (42) connected to the slider (41), a pulling rope (43) being connected between the pulley block (42) and the chuck assembly (3), a trigger (44) being movably connected to the gun housing (1), the trigger (44) being connected to the slider (41) via a transmission structure, and being used to drive the slider (41) to slide and finally drive the pulling rope (43).

2. A labor-saving clamp according to claim 1, characterized in that: The pulley group (42) comprises a fixed shaft (421) fixedly connected to the gun housing (1), and a movable shaft (422) movably connected to the gun housing (1); at least one fixed pulley (423) is rotatably connected to the fixed shaft (421); at least one movable pulley (424) is rotatably connected to the movable shaft (422); a rope (425) is provided between the slider (41), the fixed pulley (423) and the movable pulley (424); one end of the rope (425) is connected to the slider (41); the other end of the rope (425) is connected to the fixed shaft (421) after passing through the fixed pulley (423) and the movable pulley (424) in sequence; the inner end of the pulling rope (43) is connected to the movable shaft (422).

3. A labor-saving clamp according to claim 2, characterized in that: A first swing frame (426) is rotatably connected to the fixed shaft (421), and the end of the rope (425) is connected to the first swing frame (426).

4. The labor-saving clamp according to claim 2, characterized in that: A second swing frame (427) is rotatably connected to the movable shaft (422), and the inner end of the pulling rope (43) is connected to the second swing frame (427).

5. The labor-saving clamp according to claim 2, characterized in that: The gun housing (1) is provided with a first sliding groove (11) arranged along the length direction of the extension tube (2), and the movable shaft (422) is slidably connected in the first sliding groove (11).

6. The labor-saving clamp according to claim 1, characterized in that: The gun housing (1) is provided with a second sliding groove (12) facing the fixed pulley (423), and the sliding block (41) is slidably connected in the second sliding groove (12).

7. The labor-saving clamp according to claim 1, characterized in that: The transmission structure adopts an inclined plane transmission structure.

8. The labor-saving clamp according to claim 7, characterized in that: The trigger (44) is slidably connected in the gun housing (1) and protrudes outside the gun housing (1); the inclined transmission structure comprises a driving inclined surface (441) provided on the trigger (44), and a pressing head (411) provided on the slider (41) and extending toward the driving inclined surface (441); when the user presses the trigger (44), the driving inclined surface (441) presses the pressing head (411) inwardly as the trigger (44) slides, thereby driving the slider (41) to move in a direction away from the pulley assembly (42), and finally driving the movement of the chuck assembly (3).

9. The labor-saving clamp according to claim 8, characterized in that: The end of the pressing head (411) is provided with a chamfer (412) that can cooperate with the driving inclined surface (441).

10. The labor-saving clamp according to claim 1, characterized in that: The clamping head assembly (3) comprises two clamping jaws (31) rotatably connected to the end of the extension tube (2), the inner ends of the two clamping jaws (31) are rotatably connected to the same connecting rod (32), the connecting rod (32) is connected to the outer end of the pulling rope (43), and an elastic reset member (33) is provided between the connecting rod (32) and the extension tube (2) for pressing the connecting rod (32) in the direction of opening the clamping jaws (31).

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