Title:
SCREW DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/155146
Kind Code:
A1
Abstract:
The present invention provides a screw device for which the tolerance of a recessed part in which a circulating part is accommodated can be easily managed. Circulating parts (3, 4) are accommodated while gaps are present in recessed parts (5, 6) of a nut (2). At least portions of the circulating parts (3, 4) are covered by lid members (8, 12) fixed to the nut (2) by a fastening means (11). When a centrifugal force is applied to a rolling body (9) that moves in circulation paths (3c, 4c) of the circulating parts (3, 4), the circulating parts (3, 4) come into contact with the recessed parts (5, 6) at three locations (P1 to P3) when viewed in the axial direction.
Inventors:
SUZUKI ATSUSHI (JP)
KAWAI KOTARO (JP)
KAWAI KOTARO (JP)
Application Number:
PCT/JP2018/003773
Publication Date:
August 30, 2018
Filing Date:
February 05, 2018
Export Citation:
Assignee:
THK CO LTD (JP)
International Classes:
F16H25/22; F16H25/24
Domestic Patent References:
| WO2009057424A1 | 2009-05-07 |
Foreign References:
| JP2015137661A | 2015-07-30 | |||
| JP2016169819A | 2016-09-23 | |||
| JP2006226314A | 2006-08-31 | |||
| JP2014016039A | 2014-01-30 | |||
| JP2016098905A | 2016-05-30 |
Attorney, Agent or Firm:
SHIOJIMA, Toshiyuki (JP)
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