Patent ID: 6820790
Filing Date: 2004-11-23
Classification: B25C,B27F

Abstract:
A clinch mechanism for a stapler that pushes and drives a staple out of a staple magazine into a stack of paper by a lowering motion of a hammer, and clinches legs of the staple that has penetrated the paper inward to hold the paper together, the clinch mechanism comprising:a pair of base plates arranged parallel with a spacing therebetween that conforms to a direction in which the legs of the staple that has penetrated the paper are oriented; a thin-plate partition forming equally spaced gaps on both sides thereof by halving said spacing between said pair of base plates, the partition including a pair of protruding pieces on a top side thereof respectively corresponding to each of staple legs, said protruding pieces being bent in opposite directions at a preset angle to form slanted faces that partly close said equally spaced gaps, respectively; a pair of clinch plates rotatably arranged inside said equally spaced gaps; and a clinch arm for rotating said pair of clinch plates simultaneously with said lowering motion of the hammer.