| 摘要 |
<p>An annular member (50) in installed on a circular cylinder section (45) of a trunnion (44), and a roller member (48), in the inner periphery of which a needle bearing (46) is held, is installed on the circular cylinder section (45). The needle bearing (46) is held between a flange section (60) formed on one end of the roller member (48) and the annular member (50) installed on the trunnion (44) with a predetermined gap between them. Further a gap (X) between the needle bearing (46) and the annular member (50) is set to satisfy the following relationship. X > R/2€¢(1/cos¸max - 1) where R: Radius of rotation of the center of the roller member (48) relative to the center axis of an outer member (32). ¸max: Maximum inclination of angle of an inner member (34).</p> |
