| 摘要 |
A fan ( 10 ) is disclosed having an electric motor ( 13 ) which rotatably drives an annular array of blade irons ( 14 ) each having a blade ( 15 ) mounted thereto. Each blade iron has a motor mounting portion ( 21 ) configured to be coupled with the electric motor for rotation. The motor mounting portion has an arcuate, vertical wall ( 26 ) and a horizontal flange ( 27 ). The horizontal flange has a first mounting hole ( 28 ) and an oblong second mounting hole ( 29 ). A first mounting screw ( 31 ) having a first bushing or bearing ( 32 ) thereon passes through each first mounting hole and into a threaded mounting hole ( 34 ) in the motor ( 13 ). Similarly a second mounting screw ( 35 ) having a second bushing or bearing ( 36 ) thereon passes through each second mounting hole and into a threaded mounting hole ( 37 ) in the motor. With this configuration the blade iron can pivot relative to the motor.
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