公开(公告)号：US09933008B2

公开(公告)日：2018-04-03

申请号：US14693339

申请日：2015-04-22

申请人： JTEKT CORPORATION

发明人： Shuji Takahashi ,  Akihiro Toshima

IPC分类号： B62D7/22 ,  F16C11/06 ,  B62D7/16 ,  B62D3/12 ,  F16H19/04

CPC分类号： F16C11/0623 ,  B62D3/12 ,  B62D7/163 ,  B62D7/228 ,  F16C11/0695 ,  F16H2019/046 ,  Y10T74/20 ,  Y10T403/32631

摘要： A rack-and-pinion type steering device includes a ball joint for connecting a rack shaft and a tie rod. The ball joint includes a socket and a ball. The socket is provided with a regulated surface allowed to contact a regulating surface of a rack housing, and a screw projecting from the regulated surface to be connected to the rack shaft. The regulated surface includes an intermediate portion having a curved surface shape that recedes from a regulating surface in a longitudinal direction of the rack shaft toward the outer circumference, and the regulated surface has such a shape that a pointed portion toward the regulating surface is less likely to be formed on the regulated surface even if a processing error occurs in the processing for forming the regulated surface of the socket.