MOTION GUIDE DEVICE

WIPO Patent Application WO/2012/074066

A1

Disclosed is a motion guide device wherein abrasion of spacers is prevented and consequently rolling elements in an endless circulation passage formed on a moving block can be smoothly circulated. The motion guide device is provided with: a track rail (1); a moving block (2) having an endless circulation passage of rolling elements (5); and spacers (6) interposed in the endless circulation passage of the moving block (2), wherein the moving block (2) is provided with: a block body (3) having a load rolling element passage (31) of the rolling elements (5) and a rolling element return passage (32) parallel to the load rolling element passage (31); and a changing passage forming bodies (4, 104, 108) fixed on the block body (3), each changing passage forming body (4) has a direction changing passage (44) connecting the load rolling element passage (31) and the rolling element return passage (32), and the direction changing passage (44) is provided with: a changing portion (44a) continuously changing the direction of rolling of the rolling elements (5); and a change preparing portion (44b) linearly guiding the rolling elements (5) while allowing curved movement of the spacers (6).

TAKAHASHI TORU

PCT/JP2011/077826

June 07, 2012

December 01, 2011

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THK CO LTD (JP)
TAKAHASHI TORU

F16C29/06

JP2000304046A	2000-10-31
JP2001182745A	2001-07-06
JP2004108474A	2004-04-08
JPS624922A	1987-01-10
JP2005264984A	2005-09-29
JP2007092899A	2007-04-12

IDE Tetsuroh et al. (JP)
Tetsuro Ide (JP)

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