Staple-leg guide mechanism
AssigneeMax Co., Ltd.
InventorsTakuya Kitamura, Shinpei Sugihara
Life of this patent
Estimating the term…
Abstract
A guide piece 19 that enters between both legs 2b of a staple 2 is formed integrally on a pusher 16 that pushes a staple 2 as formed into a striking passage 12, an inclined surface 20 that engages with a staple 2 to operatively retreat the pusher is formed on the guide piece 19 to be positioned thereon so as not to engage with the staple 2 until tip ends of staple legs 2b penetrate through sheets, and a driver plate 7 and a forming plate 6 are set to operate out of phase relative to each other so that the forming plate 6 begins forming of a non-formed staple 2a after staple legs 2b struck out have penetrated through the sheets.
Claims6
A staple-leg guide mechanism, in which a C-shaped staple supplied into a striking passage formed between a front end surface of a staple supply passage and a rear surface of a face plate arranged in front of the staple supply passage is struck out toward sheets from the striking passage by a driver plate, the guide mechanism comprising:
- a forming plate operated in a different phase with the driver plate;
- a pusher provided on a side of a front end surface of the staple supply passage and having a pushing portion, by which the C-shaped staple is pushed into the striking passage;
- and
- a guide piece formed on the pushing portion of the pusher and continuously projected toward a side of the face plate in a staple striking-out direction through an inclined surface, so as to enter between both legs of a staple in the striking passage,
- wherein the inclined surface is formed in a position to engage with a staple when tip ends of staple legs struck out by the driver plate touch the sheets, so that the staple legs are guided by the guide piece.
A cartridge for accommodating a non-formed straight staple therein, comprising:
- a staple supply passage;
- a striking passage formed between a front end surface of a staple supply passage and a rear surface of a face plate;
- a pusher on a side of a front end surface of the staple supply passage;
- a pushing portion on the pusher;
- a guide piece formed on the pushing portion;
- and
- an inclined surface on an upper end edge of an outer side of the guide piece, wherein the guide piece is continuously projected toward the face plate through the inclined surface;
- wherein the inclined surface is formed in a position to engage with a staple when tip ends of staple legs struck out by a driver plate of a stapler touch the sheets, so that the staple legs are guided by the guide piece.
A non-formed straight staple accommodated in a cartridge, wherein the cartridge comprises:
- a staple supply passage;
- a striking passage formed between a front end surface of a staple supply passage and a rear surface of a face plate;
- a pusher on a side of a front end surface of the staple supply passage;
- a pushing portion on the pusher;
- a guide piece formed on the pushing portion;
- and
- an inclined surface on an upper end edge of an outer side of the guide piece, wherein the guide piece is continuously projected toward the face plate through the inclined surface;
- wherein the inclined surface is formed in a position to engage with a staple when tip ends of staple legs struck out by a driver plate of a stapler touch the sheets, so that the staple legs are guided by the guide piece.
Dependencies are inferred from the claim text.