Realization of Scissors with Equal Displacement between Pushing Handles and Cutting Blades by Blade Shape

Abstract

In this study, a scissors with equal displacement between pushing handles and cutting blades by a blade shape was proposed. The proposed scissors comprises two parts. The two parts are a whole upper handle and lower blade, and a whole lower handle and upper blade. Specific design methods were showed from the mechanism. In the design methods, the positions of the blade showing the blade shape were gotten from a relationship such that pushing displacement at the connections between the handles and the frames is equal to cutting displacement at the intersections of the blades. An object is not cut with the scissors as such the angle between two blades at the intersections reaches a certain value. The proposed small scissors by the angle of the blades from about 8 to 30 deg was designed as such the height of the frame about the blade, and the maximum angle of the whole handle and blade are small.