Protective cover having sensor holder part, bearing device including the protective cover, and method for manufacturing protective cover having sensor holder part
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United States of America Patent
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Apr 2, 2019
Grant Date -
Jan 5, 2017
app pub date -
Jun 24, 2016
filing date -
Jul 3, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A protective cover (1) having a reliable sensor holder part (3B) that prevents reduction in air tightness and strength of a division wall (B) between a magnetic sensor (A) and a magnetic encoder (16). The protective cover (1) is press-fitted into an outer ring to seal one axial end portion of a bearing, and has the sensor holder part (3B) holding the magnetic sensor (A). In the protective cover (1), a disc-shaped member (3) has a thick part (6) formed as a flow path for preferentially charging a molten resin into a thin part for forming the division wall (B) in a cavity of a molding die for use in injection molding between a position corresponding to a gate of the molding die and the division wall (B).
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