| 摘要 |
A ball joint includes: a ball stud having a spherical ball part and a shank part extending from the spherical ball part; a bearing cupping the spherical ball part of the ball stud; and a housing holding the bearing therein. The housing has an outer cup consisting of a soft and lightweight metal material; and an inner cup consisting of a hard metal material and arranged on a side of an inner circumference of the outer cup. <IMAGE> |
