| 摘要 |
PROBLEM TO BE SOLVED: To suppress concentration of large stress on an end portion of a yoke in torque transmission without increasing manufacturing costs of the yoke and a shaft fitted to a through hole of a base portion of the yoke, in a connecting structure of the yoke and the shaft.SOLUTION: A connecting structure has a yoke 1 formed into the U-shape by a pair of arm portions 11 and a base portion 12 connecting the arm portions 11, and a shaft 2 extended to an outer side of the U-shape from the base portion 12. A through hole 13 is composed of a connecting portion 131 provided with a spline groove 131a, and a large-diameter portion 132 having a diameter larger than the connecting portion 131. The spline groove 131a is formed from a position lower than an opening end 13a of the through hole 13 inside of the U-shape toward the outside of the U-shape, and the large-diameter portion 132 is a part between the opening end 13a and the connecting portion 132. An end face 21a of the shaft 2 exists at a connecting portion 131 side with respect to a boundary position K of the connecting portion 131 and the large-diameter portion 132.SELECTED DRAWING: Figure 2 |
