×

ELECTRIC POWER STEERING APPARATUS

  • US 20080017438A1
  • Filed: 07/17/2007
  • Published: 01/24/2008
  • Est. Priority Date: 07/21/2006
  • Status: Abandoned Application
First Claim
Patent Images

1. An electric power steering apparatus comprising:

  • a torque sensor for detecting steering torque applied to a steering member; and

    a brushless motor for assisting steering,wherein said brushless motor includes;

    a rotary shaft;

    two bearings supporting said rotary shaft at two positions;

    a rotor which rotates coaxially with said rotary shaft;

    a stator having a stator core and stator coils wound on the stator core;

    a plurality of bus bars for connecting respectively to said stator coils;

    a cylindrical motor case supporting an outer circumferential surface of the stator core with its inner circumferential surface and having a through-hole in a middle of a bottom provided at an end on one side;

    an end housing for supporting the bearing on one side;

    a bracket for supporting the bearing on the other side and covering an opening on the other side of said motor case;

    a bus bar housing in a ring shape for storing said plurality of bus bars; and

    a rotational angle sensor for detecting a rotating position of said rotor, andsaid end housing includes a cylindrical section with a flange surrounding an end on one side, and is inserted into said motor case from the opening until the flange comes into contact with the bottom, said bus bar housing is placed to surround an outer circumferential surface of the cylindrical section of said end housing, and said rotational angle sensor is placed in said cylindrical section, andsaid brushless motor is driven with a flow of a current according to the steering torque detected by said torque sensor.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×