Jtekt Corporation

Satoshi Araki

Tomoki Ogawa

Kazunori Aoki

Yukinobu Nishiyama

Yoshinori Satou

A propeller shaft includes a first shaft having a yoke at one end, a second shaft slidably connected to the other end of the first shaft, and a surface treated member which is arranged at a connecting portion, at which the first shaft and the second shaft are connected to each other, and to which surface treatment for improving slidability of the second shaft with respect to the first shaft is applied. The surface treated member is formed by a substrate which is separate from the first shaft and the second shaft and to which the surface treatment has been applied. The surface treated member is arranged at the connecting portion, at which the first shaft and the second shaft are connected to each other, after the surface treatment is applied.

Method of removing bulging portions to manufacture a friction welded propeller shaft

Propeller shaft

A cross joint is provided which is adapted to prevent a shaft portion and rollers from being damaged when a bearing cup having the rollers on an inner periphery thereof is assembled to a cross shaft. The cross joint includes: a cross shaftincluding four shaft portions; a closed-end cylindrical bearing cup; and plural needle rollershaving the first end portions thereof located on an opening side of the bearing cupand arranged along the raceway surface of the bearing cup. An inner periphery of the bearing cupincludes a tapered surface portion.increased in diameter toward the opening side. When the plural needle rollersarranged along the inner periphery of the bearing cupare fitted about the shaft portion, the tapered surface portionallows the needle rollersto incline as shifting the first end portions radially outwardly.

Growing community of inventors

Osaka, Japan

Satoshi Araki