| 摘要 |
A ball joint apparatus comprises a socket formed of a thermoplastic synthetic resin, a stud ball having a spherical head rotatably fitted in the socket so as to mate with a concave spherical surface thereof, and a housing containing the socket. The housing includes a cylindrical socket receiving portion, formed by plastically processing a metal sheet and a bottom wall portion. Through holes are bored through the bottom wall portion. Projections are provided on the base of the socket, corresponding in position to the through holes. The socket is fixed to the housing by inserting the projections into the through holes, softening each end portion of the projections, which projects outside the through holes, by heating or the like and transforming the end portions into a flat shape.
|
