A structure of the hollow torque transmission member having a bellows portion in the middle section in the axial direction is manufactured at low cost by bulge molding such as hydroforming molding. A thin thickness portion having a smaller thickness in the radial direction than other portion is provided in the middle section in the axial direction of a hollow material. A hollow torque transmission member comprising a bellows portion is obtained by expanding the thin thickness portion outward in the radial direction by performing hydroforming molding to the hollow material.
Hollow Torque Transmission Member and Manufacturing Method Thereof, Intermediate Shaft, and Steering Apparatus for Automobile
2019-12-26
Patent
Elektronische Ressource
Englisch
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