JP2006220277A5 - - Google Patents

Claims (4)

A guide rail having a track surface extending in the axial direction, a slider having a track surface facing the track surface of the guide rail and movably mounted in the axial direction, and the guide rail and the slider facing each other A roller that rolls on a rolling element rolling path formed by both raceway surfaces,
The slider has a slider main body on which the raceway surface is formed, and end caps attached to both ends of the slider main body in the axial direction, and the slider main body has a through-hole penetrating both ends in the axial direction. In the linear motion guide device in which the rolling element return path is formed, and the end cap is formed with a direction changing path that communicates the rolling element rolling path and the rolling element return path.
The direction change path includes a guide portion that protrudes from the inner surface of the direction change path and guides the movement of the roller along the direction change path, and the guide portions have both end faces of the roller rolling on the direction change path. Are provided with a pair of facing surfaces facing each other,
At least one of the pair of opposed surfaces has an inclined surface having a shape that gradually separates from an end surface of the roller that faces the distal end side from the proximal end side to the distal end side of the guide portion. apparatus. Wherein at least a portion of said inclined surface, straight of claim 1, characterized in that a plane which is inclined away gradually from the end surface of the roller facing toward the distal end from the proximal end of the guide portion Motion guide device. Wherein at least a portion of said inclined surface, according to claim 1, characterized in that the base end portion of the guide portion is a curved surface curved away gradually from the end surface of the roller facing toward the distal end Linear motion guide device. A return guide having a convex surface is attached to a portion of the end cap that faces the slider body, and a concave portion is formed with the convex surface facing the end cap, and the inner surface of the concave portion faces the inner surface. The linear motion according to any one of claims 1 to 3 , wherein the direction change path is formed by a convex surface of the return guide, and the guide portion is provided on the convex surface of the return guide. Guide device.