| 摘要 |
<P>PROBLEM TO BE SOLVED: To injection-mold a motor stay part integrally with one side wall of a fan case while reducing suction resistance in a suction part formed on the side wall. Ž<P>SOLUTION: Only a plurality of connecting walls 23b-23d radially extending from the motor stay part 23a are formed to enlarge an opening area of the suction part 24 opening around the motor stay part 23a. Reinforced connecting walls 23b having H-shaped cross sections are formed in three positions evenly placed in the circumferential direction, in place of forming a concentric connecting wall, to secure support strength of the motor stay part 23a. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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