| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite ball stud minimizing a labor cost and a manufacturing cost by including a standard bolt and an insert of a polymer material mounted on the head of a bolt or surrounding the head for sectioning a spherical ball or partially spherical ball in a hybrid ball stud. SOLUTION: A hybrid ball stud 12 includes a bolt 26 having a shaft part 28 in which an outside screw 30 is formed and a head part 32. The bolt 26 is a standard 'stock' of a round-head bolt 26. The head part 32 of the bolt 26 has a semi-spherical shape and sections an outside surface 34 engaged to an inner wall surface of a socket. An outside surface 42 of an insert 36 of a polymer material is engaged to an inside surface of the socket. The radius of the insert 36 of the high polymer material is the same as that of the head part 32 so as to form a spherical ball 44 held on the socket in cooperation so as to perform angular motion for a housing and a liner. Therefore, the ball stud 12 can be manufactured and assembled by using the inexpensive and standard round-head bolt 26. |
