Honda Motor Co., Ltd.

Fujikura Rubber Ltd.

Yuji Katayama

Michihiro Komatsu

Tsuyoshi Matsuda

Takato Nakamura

Naoki Kimoto

Yasuhiko Saijo

Hong Bie

Hiroaki Kikuchi

Masako Okochi

A torque transmission shaft between end joints and a cylindrical member. Circlips are fitted in annular grooves formed in the end joints. The circlips abut and lock the outer collars. The outer collars each include a smaller diameter portion, and an end surface of the smaller diameter portion includes a plurality of hollow portions. The hollow portions allow a clearance between a serrated portion and the smaller diameter portion to communicate with the exterior of the outer collar. Air bubbles contained in an adhesive are allowed to escape out of the clearance through the hollow portions, and thus the clearance, is filled with the adhesive densely.

Torque transmission device

A connecting shaft including a first shaft made of metal, a second shaft made of resin, and a collar made of metal including a first fitting portion fitting on an outer peripheral surface of the first shaft and a second fitting portion fitting on an outer peripheral surface of the second shaft. A gap between the outer peripheral surface of the second shaft and an inner peripheral surface of the second fitting portion is filled with an adhesive agent, and the adhesive agent is applied to an outer peripheral surface of the collar to cover an end face of the second fitting portion in an axial direction.

Connecting shaft and manufacturing method of connecting shaft

An FRP drive shaft includes an end joint joined to at least one end of an FRP cylinder via an outer collar. The end joint includes a serrated portion on an outer periphery thereof. The outer collar includes a small-diameter collar portion and a large-diameter collar portion. The serrated portion is press-fitted into an inner periphery of the FRP cylinder and fixed to an inner periphery of the small-diameter collar portion. A gap between an inner periphery of the large-diameter collar portion and an outer periphery of the FRP cylinder is filled with an adhesive for fixing the inner periphery of the large-diameter collar portion and the outer periphery of the FRP cylinder to each other. An adhesive-accumulating space which partially increases a filling amount of the adhesive is formed between the inner periphery of the large-diameter collar portion and the outer periphery of the FRP cylinder.

FRP drive shaft

Growing community of inventors

Wako, Japan

Yuji Katayama