BEARING UNIT AND MOTOR
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United States of America Patent
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N/A
Issued Date -
Feb 18, 2016
app pub date -
Aug 10, 2015
filing date -
Aug 18, 2014
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
The bearing unit comprises: a cylindrical bearing housing composed of resin; and a metallic bearing section provided in the bearing housing. Recessed grooves and projected stripes are formed in an inner wall surface of a cylindrical hole of the bearing housing and an outer circumferential surface of the bearing section. The recessed grooves and the projected stripes are recession/projection-fitted to each other. Number of the recessed grooves is greater than that of the projected stripes. The bearing section is fitted into the bearing housing in a state where the recessed grooves are aligned with the projected stripes. The recessed groove not recession/projection-fitted to the projected stripe forms a space communicating to the cylindrical hole.
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