Pliers

Abstract

The invention discloses a pair of pliers. The pair of pliers comprises a first pliers body and a second pliers body, wherein the first pliers body comprises a first pliers claw and a first handle which are movably connected; the first pliers claw and the second pliers body are rotatably connected at a first connection position; the first handle and the second pliers body are rotatably connected at a second connection position; and when the relative position between the first pliers claw and the first handle is changed, an acting force exists between the first pliers claw and the first handle, and a torque formed by the acting force by taking the first connection position as a fulcrum is larger than a torque formed by the acting force by taking the second connection position as a fulcrum. The pair of pliers adopts two lever systems, the equivalent lever arm during actual use is prolonged on the premise of not changing the sizes of tools, and accordingly, the labor-saving purpose is achieved. The invention further provides a pair of water pump pliers with the labor-saving structure, and the width of the opening between the pliers claws can be quickly adjusted.

Description

technical field [0001] The invention relates to hand tools, in particular to a clamp. Background technique [0002] Pliers are relatively light and compact hand tool products, which are widely used in household non-professional emergency or simple object clamping or installation. Generally, the pliers have a pair of pliers, each of which includes jaws and a handle, and the pair of pliers are pivotally connected, and the connection position is between the jaws and the handle, and the pivot part is generally on a certain pliers It is movable so that the width of the opening between the jaws can be adjusted. When in use, the object is placed between the jaws, and the hand applies force to the handle. Based on the law of leverage, the jaws provide clamping force. [0003] From the point of view of labor saving in tool application, in theory, as long as the handle is extended or the claws are shortened, that is, the length of the power arm or the length of the resistance arm in ...

AI Technical Summary

Problems solved by technology

The extension of the handle will directly increase the opening distance of the grip part of the handle during use. If it exceeds a certain level, it may cause inconvenience in one-handed operation. Even if it is operated with two hands, if it is in a relatively limited space, it will still cause inconvenience in use.

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