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Title:
LINEAR MOTION GUIDE DEVICE
Document Type and Number:
Japanese Patent JP2013245721
Kind Code:
A
Abstract:

To provide a linear motion guide device capable of striking a balance between the alignment performance (absorptivity of an installation error) and the security of load capacity determined by a rolling element and a rolling groove without the problem of member strength, with an inexpensive constitution.

Rolling grooves 11, 12, 211 and 212 formed on both sides in the width direction of a guide rail 1 and in respective sleeve parts 21 of a slider 2, are respectively formed in two rows, balls 3 are used as rolling elements, member rigidity of the sleeve part 21 of the slider 2 is made smaller than rigidity of ball contact parts in the rolling grooves 211 and 212 of the sleeve parts, and a thickness of a base part 22 of the slider 2 is set larger than a diameter of the ball 3. Both sleeve parts 21 of the slider are constituted of an inner sleeve part 21a integrally continued with the base part 22, constituting a portion on the guide rail side and forming the rolling grooves, and an outer sleeve part 21b formed as a separate body from this inner sleeve part 21a and installed outside in the width direction of the inner sleeve part 21a.


Inventors:
YAMAGUCHI HIROKI
Application Number:
JP2012118483A
Publication Date:
December 09, 2013
Filing Date:
May 24, 2012
Export Citation:
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Assignee:
NSK LTD
International Classes:
F16C29/06
Domestic Patent References:
JP2005048844A2005-02-24
JP2007211819A2007-08-23
JPH058037U1993-02-02
JPH09291937A1997-11-11
JP2003120669A2003-04-23
JPH02229914A1990-09-12
Attorney, Agent or Firm:
Tetsuya Mori
Megumi Konishi
Hide Tanaka Tetsu
Ichi Hirose
Toru Miyasaka