Patent ID: 8336750
Filing Date: 2012-12-25
Classification: B25C

Abstract:
1. A stapler that passes a pair of legs of a staple, which is constituted of a crown portion and the legs extending from both ends of the crown portion, through a stack of paper based on any predetermined clinching force and clinches the legs of staple to staple the stack of paper, characterized in that the stapler comprises: a magazine that loads a staple therein, the magazine containing a staple-pushing-out slit at an end of the magazine; a driver arm that contains a driver which comes into contact with the crown portion of the staple positioned on the staple-pushing-out slit at an end thereof, and drives the staple based on the predetermined clinching force; and a staple-pushing member having an elastic pushing portion at its forward end with the elastic pushing portion being curved outwardly so as to extend into an opening in a front inner wall of the magazine, the staple-pushing member being mounted near the staple-pushing-out slit and pushing by the elastic pushing portion the crown portion of the staple driven by the driver arm against the front inner wall of the magazine; and a staple guide member that guides the staple pushed toward the staple-pushing-out slit of the magazine and supports the staple to be driven out of the staple-pushing-out slit of the magazine, the staple guide member being placed inside the magazine, wherein the driver of the driver arm includes a projection that comes into contact with a portion of the staple over the legs thereof, the staple being pushed against the front inner wall of the magazine by the staple-pushing member, the projection of the driver coming into contact with a portion of the staple supported by the staple guide member over any of the legs of the staple, wherein the staple guide member includes an elastic member that supports any one of the legs of the staple driven out of the staple-pushing-out slit of the magazine, wherein the elastic member is positioned so as to face an inner side wall of the magazine with a forward end of the elastic member being spaced from the inner side wall by an amount less than a thickness of any one of the legs of the staple, wherein when any one of the legs of the staple driven out of the staple-pushing-out slit passes through the space between the forward end of the elastic member and the inner side wall of the magazine, the elastic member contacts said any one of the legs of the staple so that said any one of the legs of the staple bends the forward end of the elastic member inwardly and the forward end of the elastic member pushes said any one of the legs against the inner side wall of the magazine; and wherein after said any one of the legs of the staple driven out of the staple-pushing-out slit passes through the space, the forward end of the elastic member returns to an original position thereof.