| 摘要 |
PROBLEM TO BE SOLVED: To provide an air tool housing a pressure reducing valve connectable to a high-pressure air compression device, an arrangement structure of the air motor tool mounting an air motor mechanism part, a trigger valve mechanism part, and a pressure reducing valve mechanism part, and the air tool improving the operability of the trigger of the trigger valve mechanism part. SOLUTION: The pressure reducing valve mechanism part 50 for reducing the pressure of the high-pressure compression air is disposed at the middle part of a handle housing part 3 so as to be enclosed by an exhaust chamber 40. The air pressure P22 of the secondary pressure side port 52 of the pressure reducing valve mechanism part 50 is made to be higher than the air pressure P21 of the secondary pressure side port 52 of the pressure reducing valve mechanism part 50 in the OFF state of the trigger 37 by communicating a closed chamber 59a of a regulator spring 56 and the exhaust chamber 40 through a relief hole 59b so as to pressurize the exhaust air pressure of the air motor mechanism part 10 to the spring force F of the regulator spring 56 of the pressure reducing valve mechanism part 50 in the ON state of the trigger 37. COPYRIGHT: (C)2007,JPO&INPIT
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