| 摘要 |
PROBLEM TO BE SOLVED: To provide a universal joint that is composed of a sheet metal yoke, and hard to incur damage in its usage. SOLUTION: One side yoke 2 constituting this universal joint is equipped with a fitting part 21 to be fitted in a shaft and a bifurcate fork part 22 extending from this fitting part 21. Here, the yoke 2 is made of sheet metal, and it is structured that this fitting part 21 to be fitted in the shaft and the fork part 22 to be connected to a joint cross 3 are integrally formed. The fork part 22 is bifurcately formed, and a trough part 22c connecting a pair of fork members 22a and 22b is formed on an incline. A central inclined part in the center of this trough part 22c is formed into being 8μmRz in the maximum of its surface roughness.
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