| 摘要 |
AN INJECTION-MOLDED HIGH STRENGTH SIROCCO FAN (1) HAVING: A DISK-LIKE DRUM (2) PROVIDED WITH AN INSERT (3) PROVIDED IN AN INNER CIRCUMFERENTIAL PORTION OF THE DRUM SO THAT THE INSERT (3) IS FITTED TO A DRIVE SHAFT; A PLURALITY OF WINGS (4) EXTENDED, AT REGULAR INTERVALS, FROM OPPOSITE RADIAL SURFACES OF AN OUTER CIRCUMFERENTIAL PORTION OF THE DRUM; AND RINGS (5) PROVIDED AT OPPOSITE ENDS OF THE PLURALITY OF WINGS (4), THE DRUM, THE PLURALITY OF WINGS (4) AND THE RINGS (5) BEING INTEGRALLY INJECTION-MOLDED WITH A SYNTHETIC RESIN, THE SYNTHETIC RESIN BEING ARRANGED TO CONTAIN 25% TO 35% OF LONG FIBER.(FIG 1)
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