Patent ID: 8146453
Filing Date: 2012-04-03
Classification: F16C,F16H,Y10T

Abstract:
1. A motion guide device comprising: a track member having a roller rolling part formed to allow roller rotation; a moving member having a loaded roller rolling part formed facing the roller rolling part; a plurality of rollers arranged on a roller circulation path including a loaded roller rolling path formed between the roller rolling part of the track member and the loaded roller rolling part of the moving member and a non-loaded roller return path connecting an end of the loaded roller rolling path to an opposite end thereof; and a plurality of retainers each interposed between adjacent two rollers of the plurality of rollers, wherein the retainers are mutually separated, each of the retainers is divided into a first divided member contacting one of the adjacent two rollers and a second divided member contacting the other of the adjacent two rollers, the first divided member is allowed to rotate relative to the second divided member about an axis parallel to a moving direction of the rollers, and the non-loaded roller return path has a straight path that is twisted so that an attitude of each of the rollers is rotated when the roller moves in the straight path.