Title:
COMPOSITE ELECTROMAGNETIC TYPE DYNAMIC VIBRATION ABSORBER
Document Type and Number:
WIPO Patent Application WO/2021/135069
Kind Code:
A1
Abstract:
A composite electromagnetic type dynamic vibration absorber. A housing (1) is made of a soft magnetic material; a coil groove (11) is formed in an inner wall surface of the housing; when a rotor is at a balanced position, along the axial direction of the rotor, the upper groove opening edge of the coil groove is located between an N-pole surface and an S-pole surface of an upper main permanent magnet (4), and the lower groove opening edge of the coil groove is located between an N-pole surface and an S-pole surface of a lower main permanent magnet; a coil (5) is mounted in the coil groove; when forward current flows through the coil, the rotor is subjected to a downward electromagnetic force, meanwhile, the partial wire in the middle of the coil is affected by a magnetic field facing inwards in the radial direction, the coil may bear an upward ampere force according to the left-hand rule, the rotor may bear a downward counter-acting force according to the Newton's third law. That is, when the forward current flows through the coil, the rotor may simultaneously bear a downward electromagnetic force and an ampere force, and when reverse current flows through the coil, the rotor may simultaneously bear an upward electromagnetic force and an ampere force, and vibration is counteracted by means of the combined action of the electromagnetic force and the ampere force.
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Inventors:
ZHANG WEI (CN)
LI DONGYU (CN)
YAN ZHENGTAO (CN)
CHEN FAN (CN)
YANG YULI (CN)
LI DONGYU (CN)
YAN ZHENGTAO (CN)
CHEN FAN (CN)
YANG YULI (CN)
Application Number:
PCT/CN2020/094111
Publication Date:
July 08, 2021
Filing Date:
June 03, 2020
Export Citation:
Assignee:
ZKZS ELECTRONIC TECH CO LTD (CN)
International Classes:
F16F7/10
Domestic Patent References:
| WO2000049309A2 | 2000-08-24 |
Foreign References:
| CN110985582A | 2020-04-10 | |||
| CN108361307A | 2018-08-03 | |||
| CN103791013A | 2014-05-14 | |||
| CN102705414A | 2012-10-03 | |||
| CN107339352A | 2017-11-10 | |||
| CN106641087A | 2017-05-10 | |||
| CN108343694A | 2018-07-31 | |||
| CN108916301A | 2018-11-30 |
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