Patent ID: 7666101

Claim:
A yoke for a universal joint to which one end of a rotating shaft having two planes parallel to each other is connected, the yoke comprising: a base portion; a pair of opposed side walls that extend from the base portion such that the pair of opposed side walls faces each other at a distance; a pair of fastening portions respectively formed on the pair of opposed side walls, the pair of fastening portions being fastened by a fastener such that the rotating shaft is held, the rotating shaft being held such that the two planes of the rotating shaft are respectively opposed to and held by the pair of opposed side walls and an outer periphery of the rotating shaft is abutted on the base portion; and at least one concave portion formed in a portion of an inner surface of the pair of opposed side walls between the fastening portions and the base portion, the at least one concave portion comprising an opening peripheral edge portion pushed against an outer peripheral square portion of the rotating shaft in opposite sides of the pair of fastening portions in an axial direction of the rotating shaft when the rotating shaft is held by the pair of opposed side walls, wherein one of the opening peripheral edge portion and the outer peripheral square portion bites another one thereof in the opposite sides of the pair of fastening portions in the axial direction of the rotating shaft.