RESIN MEMBER
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United States of America Patent
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app pub date -
Feb 22, 2017
filing date -
Mar 10, 2016
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Abstract
An electric generator 1 includes a shaft 3a (metal rotating body), a ball bearing 4 (metal holding body) configured to hold the shaft 3a, and a resin spacer 5 (resin member) used together with these components. A resin part included in the spacer 5 includes reinforcement fibers F pointing in random directions in a plane orthogonal to the axial direction of the shaft 3a. The linear expansion coefficient of the resin part in a direction orthogonal to the axial direction is the same as the linear expansion coefficient of a metal part included in the shaft 3a or the ball bearing 4. Accordingly, the resin member that achieves a dimensional stability can be provided.
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