Bearing structure and air blower
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United States of America Patent
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Dec 25, 2018
Grant Date -
Sep 8, 2016
app pub date -
Mar 2, 2016
filing date -
Mar 6, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A bearing structure includes: a shaft; an oil-impregnated bearing that supports the shaft to be rotatable and includes a first sintered metal material having a first density; a bearing holder that supports an outer circumferential surface of the oil-impregnated bearing; and a seal member that is provided at an opening of the bearing holder, wherein the shaft is provided with an annular groove having a side surface portion that has an outer diameter that decreases as the side surface portion separates away from one end surface of the oil-impregnated bearing, and wherein the seal member includes a second sintered metal material having a second density that is lower than the first density of the first sintered metal material.
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