Opening/closing work tool

Abstract

The purpose of the present invention is to provide an innovative opening / closing work tool having extremely high commercial value. A first half body (1) and a second half body (2) intersect and are pivotally attached, said first half body (1) having a first action section (1a) in the tip thereof and a first gripping section (1b) in the base end thereof and said second half body (2) having a second action section (2a) in the tip thereof and a second gripping section (2b) in the base end thereof. An impelling body (3) that comes in contact with the second half body (2) and opens and impels both gripping sections (1b, 2b) is provided in the first half body (1).

Description

technical field [0001] The present invention relates to opening and closing working tools such as pliers and clamps. Background technique [0002] Conventionally, as an opening and closing working tool, a pliers with an opening force function has been proposed, in which two half bodies having a blade at the front end and a gripping portion at the base end are pivotally mounted crosswise, and between the half bodies is A force applying body that exerts force to open the two grips is arranged between them. The biasing body is a coil spring erected between predetermined positions on the opposing inner surfaces of the two halves. [0003] Therefore, the pliers with the opening urging function only need to remove the force of holding the two grips, and the opening urging force of the urging body makes the two blades of the front end open. It is very convenient to quickly and repeatedly open and close the two blades by performing strong, weak, strong, and weak grip operations. ...

AI Technical Summary

Problems solved by technology

[0004] However, the pliers with the function of opening the force cannot open the two grips excessively. In the case of excessively opening the two grips by mistake, the fixed part fixed to the half body will fall off and the force applying body will stretch. problems such as damage

[0005] Therefore, for example, as disclosed in Japanese Patent Application Laid-Open No. 61-130159, an opening urging force that has one end of the urging body fixed on only one half and the other end abuts against the other half is proposed. Although this structure can eliminate the aforementioned problems, in actual use, there is the problem that the two grips are too free to open and difficult to use

In this regard, it is also considered to provide a stopper on the tool to prevent the excessive opening of the two grip parts, but it is not realistic because of poor mass productivity and high cost.

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