| 摘要 |
PROBLEM TO BE SOLVED: To reduce the cost of an impeller connection structure of an air blower and facilitate its manufacture. SOLUTION: In this air blower in which an impeller 10 having a plurality of blades radially is fixed to a tip of a rotary shaft 6 of a motor 5 through a boss 4, respective blade parts 11 are directly connected with the boss 4 and are supported separately, a plurality of tightening holes 12 for connecting with the boss 4 are provided at a tip on the inside of each blade part 11, and both side tightening holes 12a of each adjacent blade part 11 are assembled so as to agree each other selectively to form a reinforced part 14 in which predetermined sections of each blade part 11 are overlapped in the impeller 10.
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