| 摘要 |
A portable electric fan includes a rechargeable battery disposed in the bottom portion of a housing for storing and for supplying electric power. An opening is formed in the front portion of the housing for receiving a fan device, the fan device includes two shafts rotatably secured to the housing and each having a number of notches formed in the outer peripheral portion. Two resilient devices are engaged with the notches of the shafts so as to retain the fan device in suitable positions.
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