| 摘要 |
PROBLEM TO BE SOLVED: To improve workability and to reduce noise by interposing a separators between balls. SOLUTION: A shape of a separator 4 is made in a roughly columnar shape or in a roughly cylindrical shape, its axis L is made to match a straight line connecting central points O of balls 3 and outer peripheral parts of concave parts on both ends in the axial direction of the separator 4 are made in a concave shape to make contact with a spherical surface of the ball 3. Concerning outside diametrical dimensions of the separator 4, points A to be on the extreme outsides are connected to each other by a straight line S on a curved track making contact with the spherical surface of the ball 3 on the concave surface part on both ends in the axial direction of the separators 4 adjacent to each other by sandwiching any one of the balls 3 when the ball 3 moves along the curved track, outside dimensions of the separator 4 at the time when the straight line S passes the central point O of the ball 3 sandwiched by the separators 4 adjacent to each other is made the minimum outside diametrical dimensions DMIN, and extrusion of the ball is prevented. Additionally, the maximum outside diametrical dimensions DMAX stabilizes the balls 3 by making it outline dimensions that an outer peripheral part of the separator 4 makes contact with an inside guide member 2.
|
