Tin snips with three level effort-saving function

Abstract

The invention discloses tin snips with a three level effort-saving function. The tin snips comprise a first cutting edge and a second cutting edge which are hinged together to form a cutting blade, the tin snips further comprise a middle iron handle and a bottom iron handle, the middle iron handle comprises a middle left iron handle body and a middle right iron handle body, the bottom iron handlecomprises a bottom left iron handle body and a bottom right iron handle body, the upper end of the middle left iron handle body is hinged to the upper end of the middle right iron handle body, the upper end of the bottom left iron handle body is hinged to the upper end of the bottom right iron handle body, the lower end of the second cutting edge is hinged to the middle of the middle left iron handle body, the lower end of the first cutting edge is hinged to the middle of the middle right iron handle body, the lower end of the middle left iron handle body is hinged to a handle body of the bottom left iron handle body, and the lower end of the middle right iron handle body is hinged to a handle body of the bottom right iron handle body. The tin snips comprise a double level handle which forms two four-link structures with the first cutting edge and the second cutting edge, and the effort-saving function is achieved.

Description

technical field [0001] The invention relates to the technology of manual hardware tools, in particular to a tin scissors with a three-lever labor-saving function. Background technique [0002] Generally, the traditional tin scissors mainly include two-phase hinged cutting blades, and the two ends of the two cutting blades are respectively formed with a blade portion and a grip portion, so that the user can hold the grip portion of the two shear blades with one hand , and control the opening and closing of the iron sheet scissors, and then cut the iron sheet and other work pieces. However, because traditional tin scissors are only composed of two shear blades pivoted to each other, when cutting a work piece, the force applied by the user to operate the tin scissors only depends on the length of the grip part itself. The longer the more labor-saving, there is no other labor-saving design other than this. However, because iron sheet shears are generally used to cut high-streng...

AI Technical Summary

Problems solved by technology

However, because traditional tin scissors are only composed of two shear blades pivoted to each other, when cutting a work piece, the force applied by the user to operate the tin scissors only depends on the length of the grip part itself. The longer the more labor-saving, there is no other labor-saving design other than this. However, because iron sheet shears are generally used to cut high-strength work pieces such as iron sheets, users often need to exert considerable force to cut work pieces. To solve this problem, there are currently some labor-saving tin scissors, but the structure of this kind of tin scissors is relatively complicated, and the production and assembly are not convenient

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