| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ventilation fan that stably holds a shaft fixed to a motor support portion even when the ventilation fan is rotated at a high speed. <P>SOLUTION: The ventilation fan using an inner rotor includes a shaft 3 fixed to a motor support portion 4. The shaft 3 is held by a shaft holding portion 9 of a metal member. The shaft holding portion 9 includes: a cylindrical portion 11 fixed to a resin of the motor support portion 4 by insert molding and into which the shaft 3 is inserted; and a shaft holding flange portion 12 extending outward in the radial direction from either one of an upper end or a lower end of the cylindrical portion. <P>COPYRIGHT: (C)2012,JPO&INPIT |
