Patent ID: 6045265
Filing Date: 2000-04-04
Classification: F16C

Abstract:
A rolling motion guide apparatus comprising a track shaft and a movable member movably disposed on said track shaft through a number of balls,wherein said movable member comprises: a movable member body having a loaded rolling member rolling portion corresponding to a loaded rolling member rolling portion formed on said track shaft and a rolling member return passage for returning the balls from one end of said loaded rolling member rolling portion to the other end thereof; and a direction changing passage member provided at both end portions of said movable member body, said direction changing passage member constituting a rolling member rolling direction changing passage for scooping up the balls from said loaded rolling member rolling portion and then guiding the balls to said rolling member return passage,wherein a rolling member retaining portion, a direction changing passage inner periphery guide portion and the rolling member return passage constituting portion to be provided at side peripheral portions of said loaded rolling member rolling portion are integrally formed to said movable member body by inserting said movable member body into a molding die,wherein said rolling member return passage constituting portion is integrally formed to an inner peripheral portion of a through bore formed so as to penetrate said movable member body, andwherein boundary portions between each of said rolling member retaining portion, said direction changing inner periphery guide portion, said rolling member return passage constituting portion and the movable member body are limited to a boundary portion between an end portion of the movable member body and said direction changing passage inner periphery guide portion and a single boundary portion between said rolling member rolling portion and said rolling member retaining portion.