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US 2004/0163880 A1Published application
Electric power steering apparatus
AssigneeShowa Corporation
InventorsYohei Hama, Akira Fujisaki
Life of this patent
Estimating the term…
Abstract
In an electric power steering apparatus in which a brush holder of an electric motor is clamped between a yoke of the electric motor and a housing, and a communication passage allowing an inner portion of the yoke of the electric motor and an inner portion of the housing to be ventilated is provided in a partition wall of the brush holder, shielding means opposing to each other via a narrow passage are provided in an opening facing the inner portion of the yoke in the communication passage provided in the brush holder.
Claims10
An electric power steering apparatus comprising:
- a yoke of an electric motor fixed to a housing;
- an assist shaft of a steering apparatus supported to the housing, the assist shaft being connected to a rotation shaft of the electric motor;
- a brush holder of the electric motor clamped between the yoke of the electric motor and the housing;
- and
- a communication passage allowing an inner portion of the yoke in the electric motor and an inner portion of the housing to be ventilated, the communication passage being provided in a partition wall of the brush holder, and
- shielding means opposing each other are provided in an opening facing the inner portion in a side of the yoke in the communication passage arranged in the brush holder, via a narrow passage.
3 more elements
Dependencies are inferred from the claim text.