Title:
PERMANENT MAGNET BALL JOINT WITH POSTURE SENSING FUNCTION AND MEASURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/124573
Kind Code:
A1
Abstract:
A permanent magnet ball joint with a posture sensing function and a measuring method thereof. The permanent magnet ball joint comprises a first permanent magnet (2), a second permanent magnet (7), a rotary shaft (8), a spherical shell (1), an upper base (3), a lower base (4), and a Hall sensor (6). The first permanent magnet (2) is sealed in the spherical shell (1). The second permanent magnet (7) is fixedly provided on the lower base (4). The Hall sensor (6) is provided on the second permanent magnet (7). A groove with an opening facing upwards is formed in the lower base (4). One end of the spherical shell (1) is embedded in the groove of the lower base (4), and the other end of the spherical shell (1) stretches out of the upper base (3) to be fixedly connected to the rotary shaft (8). The rotary shaft (8) drives the spherical shell (1) to rotate relative to the upper base (3), the second permanent magnet (7), and the lower base (4). Multi-degree-of-freedom rotation of the rotary shaft (8) of the ball joint is achieved; the upper permanent magnet and the lower permanent magnet have opposite directions of polarization, and part of gravity of the rotary shaft (8) is counteracted by repulsive force, so that the positive pressure on a contact portion between the rotary shaft (8) and a bearing is reduced, the friction is reduced, the abrasion is reduced, the service life of the bearing is prolonged, and vibration and noise are reduced; the position of the rotary shaft (8) can be obtained by means of detection of the Hall sensor (6) and the mapping relationship.
Inventors:
BAI KUN (CN)
LEE KOK MENG (CN)
ZHAO JIE (CN)
WANG YUHUI (CN)
ZHANG CHAO (CN)
LEE KOK MENG (CN)
ZHAO JIE (CN)
WANG YUHUI (CN)
ZHANG CHAO (CN)
Application Number:
PCT/CN2016/072099
Publication Date:
July 27, 2017
Filing Date:
January 26, 2016
Export Citation:
Assignee:
DG-SYGOLE DIGITAL TECH CO LTD (CN)
UNIV HUAZHONG SCIENCE TECH (CN)
UNIV HUAZHONG SCIENCE TECH (CN)
International Classes:
F16C11/06; F16C32/04; G01B7/30
Foreign References:
| CN103527620A | 2014-01-22 | |||
| CN202946528U | 2013-05-22 | |||
| CN101198800A | 2008-06-11 | |||
| CN1875197A | 2006-12-06 | |||
| CN101537625A | 2009-09-23 | |||
| CN101005967A | 2007-07-25 | |||
| JP2010270828A | 2010-12-02 | |||
| EP2813716A1 | 2014-12-17 |
Attorney, Agent or Firm:
YOGO PATENT & TRADEMARK AGENCY LIMITED COMPANY (CN)
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