Title:
渦電流式ダンパ
Document Type and Number:
Japanese Patent JP7185393
Kind Code:
B2
Abstract:
To provide an eddy current-type damper that is capable of preventing degradation of vibration attenuation performance.SOLUTION: An eddy current-type damper 1 comprises: a screw shaft 7; a plurality of first permanent magnets 3; a plurality of second permanent magnets 4; a cylindrical magnet holding member 2; a cylindrical conductive member 5 having conductivity; a ball nut 6 engaged with the screw shaft 7; and ferromagnetic ring parts 12. The first permanent magnets 3 are arranged along the circumferential direction around the screw shaft 7. Each of the second permanent magnets 4 is arranged between first permanent magnets 3, and has an opposite configuration of magnetic poles to the first permanent magnet 3. The magnet holding member 2 holds the first permanent magnets 3 and the second permanent magnets 4. The conductive member 5 faces the first permanent magnets 3 and the second permanent magnets 4 across gaps. The ball nut 6 is positioned inside the magnet holding member 2 and the conductive member 5, and is fixed to the magnet holding member 2. The ferromagnetic ring parts 12 are provided at two ends in the axial direction of the outer peripheral surface of the magnet holding member 2 respectively.SELECTED DRAWING: Figure 2
Inventors:
Yu Nogami
Yasutaka Noguchi
Kenji Imanishi
Ryosuke Masui
Kaoru Sano
Yasutaka Noguchi
Kenji Imanishi
Ryosuke Masui
Kaoru Sano
Application Number:
JP2017205622A
Publication Date:
December 07, 2022
Filing Date:
October 24, 2017
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
F16F15/03; E04H9/02; F16H25/20; F16H25/22; H02K49/02
Domestic Patent References:
| JP2017511867A | ||||
| JP2001037205A | ||||
| JP2014202234A |
Attorney, Agent or Firm:
Ascend Patent Attorneys Corporation