Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Electric power steering apparatus
An electric power steering apparatus is composed of a wheel gear connected with a steering wheel, a worm shaft tooth-engaged with the wheel gear, and an electric motor rotatably driving the worm shaft in which a worm tooth portion of the worm shaft is formed with a compound lead. Further, the worm shaft is fixed in an axial direction by at least one locknut provided at a portion of a separate side of the electric motor. Further, one end of the worm shaft is rotatably supported through a ball bearing and is fixed by the locknut in the axial direction of the worm shaft, and the other end thereof is rotatably supported through another ball bearing or is fixed by a circlip through a disc-shaped spring in the axial direction. Furthermore, only respective outer rings of the ball bearings are further secured to a housing in which the worm shaft and the wheel gear are disposed.
Toyoda Koki Kabushiki Kaisha
F Y B B
F16H Y10T B62D B62D
additional additional inventional inventional
Susumu Yoshinori Osamu Yoshiharu
Honaga Suzuki Watanabe Inaguma