Patent ID: 7183681
Filing Date: 2007-02-27
Classification: B62D,F16H,H02K

Abstract:
1. An electric power steering apparatus that generates an auxiliary steering torque by a brushless motor in response to a steering torque applied on a steering wheel and transmits the auxiliary steering torque to an output shaft of a steering mechanism through a reduction gear mechanism, comprising: a rotor to which a cylindrical permanent magnet for rotational driving and a detection member to enable detection of a rotational angle of said rotor are attached; a molded resin stator member having a cylindrical portion opposed to said rotor, said stator member having, integrally molded therein, laminated core on which a coil is wound, a detection device which detects the rotational angle of said rotor by detection of said detection member, and a terminal providing connection to the coil; and two bearings rotatably supporting said rotor within opposite axial end portions of said stator member, each bearing being disposed radially inside of and supported by said stator member, and one of said bearings also being disposed between said permanent magnet and said detection member, and said stator member having, on its outer surface, a flange mounted to a mounting portion of a housing for said reduction gear mechanism, said flange being axially displaced from an end of said stator member in a direction away from said reduction gear mechanism such that a portion of said stator member is disposed radially inwardly of said mounting portion of said housing.