| 摘要 |
A power stapler which includes a housing, a staple anvil supported by the internal side wall, a staple carriage for feeding an associated cartridge of staples having a plurality of staples in aligned side-by-side relationship towards the staple anvil to position one of the staples in the cartridge above the staple anvil in position to be driven through a plurality of associated sheets held above the staple anvil and a punch plate mounted for sliding movement substantially in a plane that is substantially perpendicular to the staple anvil. The power stapler further preferably includes an elongated intermediately pivoted lever having a first end disposed in meshing engagement with the punch plate whereby pivotal motion of the lever presses down and lifts up the punch plate to carry out stapling operations, the lever having a cam surface. A gear mounted for rotation about axis thereof has a crank extending from a side thereof. The crank Is disposed in meshing engagement with said cam surface to cause said lever to pivot upon rotation of said gear. The stapler further includes an electric motor coupled to intermittently drive the gear through a series of discrete angular movements corresponding to each stapling operation.
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