Title:
PARALLEL LINK MECHANISM, CONSTANT VELOCITY UNIVERSAL JOINT, AND LINK ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2013/065675
Kind Code:
A1
Abstract:
This parallel link mechanism (1) is provided with proximal and distal link hub (2), and three or more link mechanisms. The link mechanisms are three-joint chain link mechanisms comprising four revolute pairs, and are configured from the proximal and distal terminal link members (5) and a center link member. A revolute pair of the link mechanisms comprises a pair of pair constituent members (2, 5) linked to one another via a bearing (12), and a shaft unit (13) provided on one (5) of the pair constituent members is fit in the inner circumference of the inner ring (12a) of the bearing, and an annular inner surface forming part (15) provided on the other (2) of the pair constituent members (2) is fit on the outer circumference of the outer ring (12b) of the bearing (12). By means of the shaft unit (13) and the annular inner surface forming part (15), a seal structure (19, 21) is constructed which limits the coming and going of lubricant between the internal and external part of the bearing (12).
Inventors:
ISOBE HIROSHI (JP)
YAMADA HIROYUKI (JP)
SONE KEISUKE (JP)
YAMADA HIROYUKI (JP)
SONE KEISUKE (JP)
Application Number:
PCT/JP2012/078017
Publication Date:
May 10, 2013
Filing Date:
October 30, 2012
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16H21/48; F16D3/30; F16J15/447; F16J15/54
Foreign References:
| JP2005299828A | 2005-10-27 | |||
| JPS61184153U | 1986-11-17 | |||
| JP2000252696A | 2000-09-14 | |||
| JPS647917B2 | 1989-02-10 | |||
| JP2009174683A | 2009-08-06 | |||
| JP2008185062A | 2008-08-14 | |||
| JP2000094245A | 2000-04-04 | |||
| JP2002349593A | 2002-12-04 | |||
| US5893296A | 1999-04-13 |
Other References:
See also references of EP 2775169A4
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
Shuji Sugimoto (JP)
Shuji Sugimoto (JP)
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Claims: