Rotating apparatus capable of improving the shock resistance and method for manufacturing the rotating apparatus
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United States of America Patent
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Jun 23, 2015
Grant Date -
Mar 26, 2015
app pub date -
Dec 2, 2014
filing date -
Oct 19, 2010
priority date (Note) -
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Abstract
A rotating apparatus includes a hub, a shaft housing portion having a center through-hole, a base plate, and a shaft with a cylindrical section housed in the through-hole. At a joint between the shaft housing portion and the hub is formed a bonding region for bonding the shaft housing portion and the hub by a hardening resin, and a narrow-gap region more toward the base plate than the bonding region. A gap between the shaft housing portion and the hub in the narrow-gap region is narrower than a gap between the shaft housing portion and the hub in the bonding region. The hub includes a fourth circumferential recessed portion recessed in the axial direction and a lower circumferential raised portion projecting in the axial direction on a radially inner side of the fourth circumferential recessed portion. The narrow-gap region is located inside the lower circumferential raised portion.
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