| 摘要 |
PROBLEM TO BE SOLVED: To reduce squeaky sound when resin powders are generated by friction between a rotational shaft and a bearing, in a rotational shaft supporting structure using resin sliding bearing. SOLUTION: The rotational shaft supporting structure is constituted of the rotational shaft 110 and the resin sliding bearing 210. An inclined face 111 is formed by cutting out in the rotational shaft to be at an angle to an axial center of the rotational shaft. The rotational shaft is fitted in the bearing at a inclined face forming portion 112. When the rotational shaft rotates, the resin powders 300 generated between the rotational shaft and bearing are evacuated along the inclined face 111 from the fitting portion to the outside. Therefore, stick-slip, that is friction between members made of the same resin, is reduced to reduce the squeaky sound of resin.
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