| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive combustion type nailing machine, by providing a fan of an inexpensive constitution, a fan installing device and also a highly reliable fan fixing method. SOLUTION: A shaft 13 for forming a male screw part 13a is coaxially joined to a rotary shaft 10 of a motor 9, and at least two nuts 14 are threadedly engaged with the male screw part 13b, and the fan 8 is sandwiched and fixed between the nuts 14. The fan 8 rotates in a combustion chamber 6, and agitates and mixes combustion gas and air. COPYRIGHT: (C)2006,JPO&NCIPI
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