| 摘要 |
<p>There is a direction turning passage of a rolling bearing for a rectilinear motion comprising: a track member and a slide member which are slidably come into engagement with each other between first and second track surfaces formed in the track and slide members through rolling members. The direction turning passage in the slide member adapted to turn the direction of the rolling members along a curved line is formed by the curves having two or more kinds of curvatures so as to be continuous with the track to which a bearing load is applied, and the first portion at the nearest location of the track side is formed so that its curvature is smaller than that of the second portion subsequent thereto. The direction turning passage in the slide member, on one hand, may be formed by the arcs having two or more kinds of radii and the first arc at the nearest location of the track side is formed larger than the second arc subsequent to the first arc, or it may be formed by an ellipse in which at least the track side is a minor axis. With this arrangement, the overall bearing size can be made small and the slide resistance of the bearing becomes small.</p> |
