Patent ID: 6305846
Filing Date: 2001-10-23
Classification: F16C

Abstract:
A linear motion guiding apparatus comprising:a guide member provided with a rolling member running track, anda 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 memberscharacterized 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 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;said rolling member returning passage is made by forming a through-hole in the body of said movable member; andsaid pair of rolling member passage forming portions and at least one of said air of direction changing passage-inner guide forming portions are connected with each other through integral forming.