Oliff & Berridge, PLC
Rack bar and manufacturing method thereof
A rack bar of a power steering unit for a vehicle has improved bending strength. The rack bar includes a rod portion which fits slidably into an oil seal attached to a cylinder portion of a power cylinder, and a rack portion which is formed with the rod portion through a connecting portion and which meshes with a pinion. Quenching is applied the rod portion and to the rack portion, preferably under different conditions. The quenching applied to the rack portion also is applied to at least a portion of the connecting portion.
TRW Automotive Japan Co., Ltd. Toyota Jidosha Kabushiki Kaisha
B C Y C C Y B Y
B62D C21D Y10T C21D C21D Y10T B62D Y10T
inventional additional additional inventional additional additional inventional additional
Takashi Kazuhiro Tomomi
Yamawaki Akiyama Fujii