Patent ID: 8596868

Claim:
A motion guide device, comprising: a track rail having insertion holes for fixing bolts, the insertion holes being formed in a penetrated manner at an interval in a longitudinal direction, and having a plurality of rolling-element rolling surfaces which formed along the longitudinal direction so that the insertion holes are interposed therebetween; and a moving block assembled to the track rail through intermediation of a plurality of rolling elements to be freely movable along the track rail, the moving block having an endless circulation path for the plurality of rolling elements, wherein the moving block is provided with an adhering matter path at a position opposed to the insertion holes of the track rail, the adhering matter path allowing matters adhering on the track rail to pass from one end to another end of the moving block, wherein a path forming member forming an entrance of the adhering matter path is fixed to each of both ends of the moving block in a moving direction thereof, the path forming member comprising: a pair of end seal portions which traverse the plurality of rolling-element rolling surfaces of the track rail and abut against a surface of the track rail; and a path opening portion which is provided between the pair of end seal portions and forms the entrance of the adhering matter path of the moving block, and wherein each of the pair of end seal portions of the path forming member comprises an inclined removing surface for moving the matters adhering on the track rail toward the path opening portion, the inclined removing surface being formed adjacent to the path opening portion.