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A platform for research: civil engineering, architecture and urbanism
EDDY CURRENT TYPE DAMPER
To provide an eddy current type damper which improves damp power in the vicinity of an end of a reciprocal movement range of a screw shaft.SOLUTION: An eddy current type damper 1 includes a cylindrical magnet holding member 5, multiple permanent magnets 6, a cylindrical conductive member 4, a screw shaft 2, a ball nut 3 and damping mechanisms 7A and 7B. The multiple permanent magnets 6 are fixed to the magnet holding member 5 and disposed while being spaced from each other in a circumferential direction of the magnet holding member 5, and arrangements of magnetic poles are alternately inverted in the circumferential direction. The conductive member 4 faces the multiple permanent magnets 6 while being spaced therefrom in a radial direction of the magnet holding member 5. The screw shaft 2 is reciprocally movable in a central axis direction of the magnet holding member 5. The ball nut 3 is meshed with the screw shaft 2 and relatively rotates the multiple permanent magnets 6 and the conductive member 4 by moving the screw shaft 2. The damping mechanisms 7A and 7B limit displacement of the screw shaft 2 in a case where the screw shaft 2 is displaced from a central position of the reciprocal movement as much as or more than a predetermined amount.SELECTED DRAWING: Figure 1
【課題】ねじ軸の往復移動範囲の端近傍における減衰力を向上させる渦電流式ダンパを提供する。【解決手段】渦電流式ダンパ１は、円筒形状の磁石保持部材５と、複数の永久磁石６と、円筒形状の導電部材４と、ねじ軸２と、ボールナット３と、減衰機構７Ａ、７Ｂと、を含む。複数の永久磁石６は、磁石保持部材５に固定され、磁石保持部材５の円周方向に沿って隙間を空けて配置され、円周方向に沿って磁極の配置が交互に反転する。導電部材４は、複数の永久磁石６と磁石保持部材５の径方向に隙間を空けて対向する。ねじ軸２は、磁石保持部材５の中心軸方向に沿って往復移動可能である。ボールナット３は、ねじ軸２とかみ合い、ねじ軸２が移動することで複数の永久磁石６と導電部材４とを相対的に回転させる。減衰機構７Ａ、７Ｂは、ねじ軸２が往復移動中央位置から所定量以上変位したときにねじ軸２の変位を制限する。【選択図】図１
EDDY CURRENT TYPE DAMPER
To provide an eddy current type damper which improves damp power in the vicinity of an end of a reciprocal movement range of a screw shaft.SOLUTION: An eddy current type damper 1 includes a cylindrical magnet holding member 5, multiple permanent magnets 6, a cylindrical conductive member 4, a screw shaft 2, a ball nut 3 and damping mechanisms 7A and 7B. The multiple permanent magnets 6 are fixed to the magnet holding member 5 and disposed while being spaced from each other in a circumferential direction of the magnet holding member 5, and arrangements of magnetic poles are alternately inverted in the circumferential direction. The conductive member 4 faces the multiple permanent magnets 6 while being spaced therefrom in a radial direction of the magnet holding member 5. The screw shaft 2 is reciprocally movable in a central axis direction of the magnet holding member 5. The ball nut 3 is meshed with the screw shaft 2 and relatively rotates the multiple permanent magnets 6 and the conductive member 4 by moving the screw shaft 2. The damping mechanisms 7A and 7B limit displacement of the screw shaft 2 in a case where the screw shaft 2 is displaced from a central position of the reciprocal movement as much as or more than a predetermined amount.SELECTED DRAWING: Figure 1
【課題】ねじ軸の往復移動範囲の端近傍における減衰力を向上させる渦電流式ダンパを提供する。【解決手段】渦電流式ダンパ１は、円筒形状の磁石保持部材５と、複数の永久磁石６と、円筒形状の導電部材４と、ねじ軸２と、ボールナット３と、減衰機構７Ａ、７Ｂと、を含む。複数の永久磁石６は、磁石保持部材５に固定され、磁石保持部材５の円周方向に沿って隙間を空けて配置され、円周方向に沿って磁極の配置が交互に反転する。導電部材４は、複数の永久磁石６と磁石保持部材５の径方向に隙間を空けて対向する。ねじ軸２は、磁石保持部材５の中心軸方向に沿って往復移動可能である。ボールナット３は、ねじ軸２とかみ合い、ねじ軸２が移動することで複数の永久磁石６と導電部材４とを相対的に回転させる。減衰機構７Ａ、７Ｂは、ねじ軸２が往復移動中央位置から所定量以上変位したときにねじ軸２の変位を制限する。【選択図】図１
EDDY CURRENT TYPE DAMPER
渦電流式ダンパ
NOGUCHI YASUTAKA (author) / NOGAMI YUTAKA (author) / IMANISHI KENJI (author) / MASUI RYOSUKE (author) / SANO KUMPEI (author)
2020-05-07
Patent
Electronic Resource
Japanese