Title:
PARALLEL LINK MECHANISM AND LINK OPERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/054057
Kind Code:
A1
Abstract:
In this parallel link mechanism (9), a distal-end-side link hub (13) is coupled to a proximal-end-side link hub (12) via three sets of link mechanisms (14) such that the orientation of the distal-end-side link hub (13) can be changed. Each link mechanism (14) has a proximal-end-side end-section link member (15), a distal-end-side end-section link member (16), and a central link member (17), the link mechanisms (14) being formed as four-joint-linked link mechanisms (14) comprising four revolute pairs. In the parallel link mechanism (9), a singularity is generated when a central axis (O2, O3), which is the rotational axis of a revolute pair formed by the proximal-end-side or distal-end-side end-section link member (15, 16) and the central link member (17), matches the central axis (QA, QB) of the proximal-end-side or distal-end-side link hub (12, 13). The axial angle (γ) of the central link member (17) is defined so as not to coincide with the orientation at which the singularity is generated.
Inventors:
ISOBE HIROSHI (JP)
Application Number:
PCT/JP2022/034968
Publication Date:
April 06, 2023
Filing Date:
September 20, 2022
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
B25J11/00
Foreign References:
| JP2016112638A | 2016-06-23 | |||
| JPH11104987A | 1999-04-20 | |||
| JP2013202725A | 2013-10-07 | |||
| JP2000094245A | 2000-04-04 | |||
| US5893296A | 1999-04-13 |
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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