Title:
LINEAR GUIDE
Document Type and Number:
WIPO Patent Application WO/2022/202949
Kind Code:
A1
Abstract:
A linear guide wherein: an opening on a side connected to a load rolling path (24), out of two openings in a direction-change path (26), is a rail-side opening (28) and an opening on a side connected to a ball return path (23) is a return path-side opening (29). The linear guide is formed such that: an inner recessed groove (41) that defines an inner circumferential surface of the direction-change path (26) has a cross-sectional shape, in a plane orthogonal to the central axis CL of the direction-change path (26), that is different in the rail-side opening (28) and the return path-side opening (29); and points in the inner recessed groove in both openings are joined in one arc or a plurality of smoothly continuous arcs, in any cross-section parallel to a plane following the central axis of the direction-change path. As a result, stable operating performance can be maintained while maximizing the hole diameter of the ball return path.
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Inventors:
NAKANO KENTA (JP)
WADA ATSUSHI (JP)
WADA ATSUSHI (JP)
Application Number:
PCT/JP2022/013765
Publication Date:
September 29, 2022
Filing Date:
March 23, 2022
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
F16C29/06
Domestic Patent References:
| WO2012074066A1 | 2012-06-07 |
Foreign References:
| JP2008281096A | 2008-11-20 | |||
| JP3226315U | 2020-06-18 | |||
| JPH1172119A | 1999-03-16 | |||
| JP2013050206A | 2013-03-14 | |||
| JP2000304045A | 2000-10-31 | |||
| JP2001182745A | 2001-07-06 | |||
| JP2018071592A | 2018-05-10 | |||
| JP3143604B2 | 2001-03-07 | |||
| JP2021053614A | 2021-04-08 |
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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