Electric stapler

An electric stapler including

• a body case,
• a sending means that sends out a sheet staple contained in a chamber to one end of a driving passage,
• a forming plate and a driver disposed for reciprocation,
• a holder for holding the forming plate and the driver,
• a drive shaft for reciprocating the holder and a motor for rotating the drive shaft, in which a forward motion of the forming plate forms a staple sent out to one end of the driving passage in a u-letter shape, the forward motion of the driver shoots out the staple formed in the u-letter shape from the other end of the driving passage, and
• a clincher mechanism clinches the legs of the stapler shot out of the electric stapler, wherein
• the drive shaft is disposed on one centric straight line with a spindle of the motor and planet gears are disposed along the drive shaft for speed reduction and rotate the drive shaft by rotation of the motor spindle,
• the clincher mechanism including a clincher guide that has a rear portion pivoted rotatably to the body case and swings to hold a sheet bundle with a front end thereof and the body case, and
• a clincher arm disposed inside the clincher guide of which the rear portion is pivoted to the rear portion of the clincher guide to be swingable by a specific angle to the clincher guide, on a front portion of which is formed a bending groove for bending the legs of the staple;
• and
• the clincher guide swings to hold the sheet bundle with the front portion thereof in the body case, after the staple is driven to penetrate the sheet bundle, the clincher arm swings to the clincher guide by the specific angle, and the bending groove clinches the legs of the staple penetrated the sheet bundle.

An electric stapler including

• a body case,
• a sending means that sends out a sheet staple contained in a chamber to one end of a driving passage,
• a forming plate and a driver disposed for reciprocation,
• a holder for holding the forming plate and the driver,
• a drive shaft for reciprocating the holder and a motor for rotating the drive shaft, in which a forward motion of the forming plate forms a staple sent out to one end of the driving passage in a u-letter shape, the forward motion of the driver shoots out the staple formed in the u-letter shape from the other end of the driving passage, and a clincher mechanism clinches the legs of the stapler shot our of the electric stapler, wherein the drive shaft is disposed on one centric straight line with a spindle of the motor and planet gears are disposed along the drive shaft for speed reduction and rotate the drive shaft by rotation of the motor spindle, wherein
• the clincher mechanism includes a clincher guide having a bending groove to bend the legs of the staple on a front portion thereof and a rear portion pivoted rotatably to the body case, which swings to hold a sheet bundle with the front end in the body case, and
• a check plate, when the clincher guide swings to hold the sheet bundle with the front portion of the body case, controls the clincher guide to swing in the direction opposite to the direction in which the sheet bundle is held.

An electric stapler including

• a body case,
• a sending means that sends out a sheet staple contained in a chamber to one end of a driving passage,
• a forming plate and a driver disposed for reciprocation,
• a holder for holding the forming plate and the driver,
• a drive shaft for reciprocating the holder and a motor for rotating the drive shaft, in which a forward motion of the forming plate forms a staple sent out to one end of the driving passage in a u-letter shape, the forward motion of the driver shoots out the staple formed in the u-letter shape from the other end of the driving passage, and
• a clincher mechanism clinches the legs of the stapler shot out of the electric stapler, wherein
• the drive shaft is disposed on one centric straight line with a spindle of the motor and planet gears are disposed along the drive shaft for speed reduction and rotate the drive shaft by rotation of the motor spindle,
• the clincher mechanism includes a clincher guide that has a rear portion pivoted rotatably to the body case and swings to hold a sheet bundle with a front end thereof and a body case, and
• a clincher arm disposed inside the clincher guide of which rear portion is pivoted to the rear portion of the clincher guide to be swingable by a specific angle to the clincher guide, on a front portion which is between the side walls of which rear portion is pivoted to the rear portion of the clincher guide to be swingable by a specific angle to the clincher guide;
• the clincher arm has a flat groove formed on the front portion thereof extending in the cross direction, which bends the legs of the staple;
• the side walls have recesses formed on the insides thereof having slopes slanted inwardly as they are away from the body case, which guide the legs of the staple into the flat groove;
• and
• after the staple is driven to penetrate the sheet bundle, the clincher arm swings to the clincher guide by the specific angle, and the flat groove clinches the legs of the staple penetrated the sheet bundle.

An electric stapler including

• a body case,
• a sending means that sends out a sheet staple contained in a chamber to one end of a driving passage,
• a forming plate and a driver disposed for reciprocation,
• a holder for holding the forming plate and the driver,
• a drive shaft for reciprocating the holder and a motor for rotating the drive shaft, in which a forward motion of the forming plate forms a staple sent out to one end of the driving passage in a u-letter shape, the forward motion of the driver shoots out the staple formed in the u-letter shape from the other end of the driving passage, and
• a clincher mechanism clinches the legs of the stapler shot out of the electric stapler, wherein the drive shaft is disposed on one centric straight line with a spindle of the motor and planet gears are disposed along the drive shaft for speed reduction and rotate the drive shaft, wherein the clincher mechanism includes:
• a clincher body that makes a forward motion, of which front portion holds a sheet bundle mounted on the other end of the driving passage;
• and
• a link member that makes a reciprocating swing by a reciprocating motion of the holder, and a fixing means that fixes the clincher body at a position where the front portion holds the sheet bundle;
• the clincher body has a clincher that includes the legs of the staple penetrated the sheet bundle;
• and
• the reciprocating swing of the link member carries out holding the sheet bundle by the clincher body, fixing the clincher body by the fixing means, clinching the legs of the staple by the clincher releasing the fixing of the clincher body, and releasing the holding of the sheet bundle.