| 摘要 |
PROBLEM TO BE SOLVED: To surely prevent fasteners from being rubbed to a driver by delaying the timing of the feed operation of a feeding piston as compared with that of the return operation of a hammering piston. SOLUTION: The gas combustion type nail driving tool drives the fasteners supplied to a nose part 6 into a driven member by allowing the hammering piston 10 and the driver 11 to execute driving operation with the combustion gas pressure generated by burning a mixture gas in an upper combustion chamber 5 of a hammering cylinder 9 by the drawing operation of a trigger lever 6. A stopper 28 is retractably arranged in the middle of the course of a feeding claw 23. The stopper 28 is energized by a spring in a protruding direction. A contact arm 15 is provided which protrudes from the lower end of the nose part and is relatively vertically movable along the nose part. The stopper 28 is retracted from the course by the engagement of the contact arm 15 with the stopper 28 when the contact arm 15 is downwardly moved. COPYRIGHT: (C)2007,JPO&INPIT
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