Title:
LINK ACTUATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/185373
Kind Code:
A1
Abstract:
Provided is a link actuation device capable of operating precisely in a wide operating range although being compact, and capable of suppressing a load on the device caused by a bend in a wire rod inserted in a space inside a link mechanism without damaging the wire rod.
A distal end-side link hub (3) is coupled to a proximal end-side link hub (2) via three or more sets of link mechanisms (4) so that the posture thereof can be changed. Each of the link mechanisms (4) is composed of a proximal end-side end link member (5), a distal end-side end link member (6), and a central link member (7). A wire core (33) both ends of which are held at wire rod holding points (Q1, Q2) located on link hub central axes (B, C) is disposed between the link hubs (2, 3). When the distances from a middle point (O) to spherical link centers (P1, P2) in a state where the link hubs (2, 3) are parallel to each other are each denoted by (D), and the distances from the spherical link centers (P1, P2) to the wire rod holding points (Q1, Q2) are each denoted by (H), a relation of H=0.5×D is satisfied.
Inventors:
SONE KEISUKE (JP)
ISOBE HIROSHI (JP)
NISHIO YUKIHIRO (JP)
ISOBE HIROSHI (JP)
NISHIO YUKIHIRO (JP)
Application Number:
PCT/JP2014/062573
Publication Date:
November 20, 2014
Filing Date:
May 12, 2014
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
SONE KEISUKE (JP)
ISOBE HIROSHI (JP)
NISHIO YUKIHIRO (JP)
SONE KEISUKE (JP)
ISOBE HIROSHI (JP)
NISHIO YUKIHIRO (JP)
International Classes:
B25J11/00; F16H21/54
Foreign References:
| JP2013068280A | 2013-04-18 | |||
| JP2005351379A | 2005-12-22 | |||
| JP2005127475A | 2005-05-19 |
Other References:
See also references of EP 2998081A4
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
Shuji Sugimoto (JP)
Shuji Sugimoto (JP)
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