| 摘要 |
PURPOSE:To reduce frictional resistance on a sliding face, by using electrets to form the mechanical sliding face or a mechanical sliding point. CONSTITUTION:A bearing electret 3 is fitted on the inner face of a metallic bearing 1, and a rotary shaft electret 4 is engaged with a metallic rotary shaft 2, for forming a rotor, and this rotor is fitted in the bearing 1. In this case, the bearing electret 3 and the rotary shaft electret 4 are attached as they are the same in their polarity at the sliding parts. As a material of these electrets, polyvinylidene fluoride is used. Accordingly, frictional resistance in this electret sliding body is reduced, by floating effect on the sliding face, which is brought by the electric field.
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