Patent ID: 7322607

Claim:
A telescopic shaft for steering of a vehicle, assembled in a steering shaft and including a male shaft and a female shaft that are so fitted to be capable of transferring torque and to be movable in an axial direction relative to each other, characterized in that a first torque transfer portion, which includes a first torque transfer member and an elastic body, is formed in at least one line of axially-extending groove formed in each of an outer peripheral surface of said male shaft and an inner peripheral surface of said female shaft, said elastic body includes: a transfer member sided contact portion being in contact with said first torque transfer member; a groove surface sided contact portion spaced at a predetermined interval substantially in a peripheral direction from said transfer member sided contact portion, and being in contact with a groove surface of said axially-extending groove of said male shaft or said female shaft; and a biasing portion elastically biasing said transfer member sided contact portion and said groove surface sided contact portion in such a direction as to get separated from each other; wherein said biasing portion of said elastic body takes a bent shape bent between said transfer member sided contact portion and said groove surface sided contact portion.