| 摘要 |
To interconnect a first member (19) and a second member (12) so that each of them may turn around two axes, a first axis (47) and a second axis (48) intersecting the first axis at a predetermined angle, a socket (29) having a bowl-like portion (32) defined by concentric hemispherical inner and outer surfaces (30, 31) and having an elongated opening (34) in the bottom is fixed to the first member, while an insert (25) having a spherical head portion (26) adapted to fit the hemispherical inner surface (30) and a shaft portion (27) radially extending from the spherical head portion is fixed to the second member with the shaft portion (27) extending through the elongated opening. |
