Patent ID: 6527157
Filing Date: 2003-03-04
Classification: B25C

Abstract:
A stapler with a punching unit, comprising:a longitudinal base having a staple forming die at its front end portion and two parallel support walls at its rear end portion, with both a punch hole being formed on a top surface of the base at a position between the two support walls and a sheet insert slit being formed between the two support walls and the top surface of the base so as to allow of paper to be inserted into the slit during a punching operation; a pressing lever hinged to first shaft holes of the support walls at its bearing holes using a lever shaft and manually operated by a user so as to perform a desired stapling operation or a desired punching operation; a staple feeder hinged to second shaft holes of said pressing lever and used for receiving staples therein; and a punching plunger having a cutting edge at its lower end, said punching plunger being vertically positioned on said base at a position between the two support walls while being normally biased by a spring upwardly, thus coming into contact with the lower surface of said pressing lever at its top end and being vertically inserted into said punch hole at its lower end portion, wherein a rectangular opening is formed at the rear end portion of the top wall of said pressing lever, while a fixing hole is formed on each sidewall of said pressing lever at a position corresponding to said rectangular opening, with a mode select pin having a wheel at its middle portion and being movably held by the two fixing holes of said pressing lever at its both ends in a way such that the wheel of the mode select pin is received within the rectangular opening of said pressing lever at its upper portion and is brought into movable contact with the top end of said punching plunger at its lower portion, thus allowing the stapler to be selectively used for a stapling operation or a punching operation in accordance with a position of the wheel relative to the top end of the punching plunger.