| 摘要 |
PROBLEM TO BE SOLVED: To make the adjustment operation of a ball joint easily and safely. SOLUTION: One joint member of a ball joint 3B is formed of a polyhedron part 17. A spherical recessed surface member 19 as the other joint member is close-fitted to the outer periphery of the polyhedron part 17 slidably in any direction. Also a fixing member 18 which is pressed elastically against one surface of the polyhedron part 17 is provided on the spherical recessed surface member 19. When a load acting on a supporting shaft 8 is set at a specified limit or below, because the fixing member 18 is pressed elastically against the surface of the polyhedron part 17, the spherical recessed part member 19 is fixed to the polyhedron part 17 so that it is not rotated slidably. When the supporting shaft 8 is moved manually, the spherical recessed surface member 19 is rotated slidably in any direction relative to the polyhedron part 17. Namely, while a load on the supporting shaft 8 side, the supporting shaft 8 can be adjusted to an optional angle. |
