Patent ID: 6524003
Filing Date: 2003-02-25
Classification: F16C

Abstract:
A linear motion guiding apparatus comprising:a guide member provided with a rolling member running track, and a movable member arranged so as to be movable along the guide member through a large number of rolling members, said movable member being provided with (i) a rolling member running counter-track corresponding to the rolling member running track of said guide member, (ii) a rolling member returning passage arranged away from said rolling member running counter-track by a prescribed distance and in parallel therewith and (iii) a pair of direction changing passages for connecting the rolling member running counter-track and the rolling member returning passage to permit circulation of the rolling members, characterized in that: a resin-formed body for forming a rolling member circulation passage comprises a pair of rolling member passage forming portions extending along both longitudinal sides of said rolling member running counter-track, a returning passage forming portion for forming the rolling member returning passage and a pair of direction changing passage-inner guide forming portions for forming inner peripheral guide portions of said direction changing passages, said resin-formed body being separately formed from a body of said movable member; and at least two portions of (a) said pair of rolling member passage forming portions, (b) said returning passage forming portion, (c) one of said pair of direction changing passage-inner guide forming portions and (d) another of said pair of direction changing passage-inner guide forming portions are connected with each other through integral forming so that said resin-formed body can be built in the body of said movable member.