| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing structure of a fan having a small friction area and small friction resistance relatively and capable of facilitating the start of the fan, being operated smoothly, and preventing the generation of noise and heat. SOLUTION: In the bearing structure of the cooling fan, a shaft holding seat is combined with a shaft structure provided with a cone-shaped end to bring a shaft into contact with the shaft holding seat at a single point by the cone-shaped upper end.
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