| 摘要 |
PROBLEM TO BE SOLVED: To provide a driver machine capable of providing improved durability of a driver blade without increasing reaction upon driving in a locking device, and preventing breakage due to stress concentration on a pin fitting hole part of the driver blade. SOLUTION: A boss 4a is formed at a lower part of a piston 4 that can slide inside a cylinder of the driver machine in a vertical direction, a fitting groove to which an attachment part 6a of the driver blade 6 is fitted is formed at the boss 4a, and a pin 5 is pressed in a circular hole provided at the boss 4a. A hole to which the pin 5 is fitted is formed in the attachment part 6a of the driver blade 6 toward a driving-in direction from an outer circumference of the pin 5 to form in a longitudinal hole 7, and curve line parts that form an arc 8 are formed at both ends in a width direction. An upper edge 9a of the driver blade 6 is inserted to be abutted on a bottom part 10a of the fitting groove, and the driver blade 6 is fixed at the piston 4 so that an upper part of the pin 5 may be abutted on the driver blade 6, but a lower part of the pin 5 may not be abutted on the driver blade 6. COPYRIGHT: (C)2009,JPO&INPIT |
