Patent Number: 6,305,846

Title: Linear motion guiding apparatus

Abstract: A linear motion guiding apparatus comprises a guide rail provided with a ball running groove, and a movable block movably arranged along the guide rail through balls. The movable block is provided with a ball running counter-groove, a ball returning passage arranged away from the ball running counter-groove and direction changing passages for connecting these members. A resin-formed body for forming a ball circulation passage comprises a pair of ball passage forming portions, a returning passage forming portion and a pair of direction changing passage-inner guide forming portions. The resin-formed body is separately formed from a body of the movable block. At least two portions of (a) the ball passage forming portions, (b) the returning passage forming portion, (c) one of the direction changing passage-inner guide forming portions and (d) another of the of direction changing passage-inner guide forming portions are connected with each other through integral forming so that the resin-formed body can be built in the body of the movable block.

Inventors: Michioka; Hidekazu (Tokyo-to, JP), Iida; Katsuya (Tokyo-to, JP), Yoshihashi; Masahiro (Tokyo-to, JP), Mochizuki; Hiroaki (Tokyo-to, JP), Hirokawa; Tadashi (Tokyo-to, JP)

Assignee: THK Co., Ltd.

International Classification: F16C 29/06 (20060101); F16C 029/06 ()

Expiration Date: 10/23/2018