A ball joint (1) includes a tubular boot (5), an upper end portion (5a) and a lower end portion (5b) of which are fitted onto an intermediate portion of a shaft (12) of a ball stud (4) and an open end (6a) of a housing (2), respectively. An annular lip por...

The invention is a joint structure of a ball joint and an arm, which 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; a housing holding t...