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A platform for research: civil engineering, architecture and urbanism
EDDY CURRENT DAMPER
To provide an eddy current damper in which braking force near a stroke end is improved.SOLUTION: An eddy current damper 1 includes a screw shaft 2, a ball nut 3, a conductive member 4, a magnet holding member 5, a plurality of permanent magnets 6, and a magnetic fluid storage part 7. The ball nut 3 is meshed with the screw shaft 2. The cylindrical conductive member 4 is fixed to the ball nut 3. The magnetic holding member 5 is disposed inside the conductive member 4, and fixed to the screw shaft 2. The plurality of permanent magnets 6 are fixed to the magnet holding member 5, magnetic poles of the permanent magnets 6 are arranged in an alternately inverted manner in a circumferential direction of the conductive member 4, and opposed to an inner circumferential surface of the conductive member 4 at a clearance. The magnetic fluid storage part 7 is provided in an outer circumferential surface of the conductive member 4, and stores the magnetic fluid. The plurality of permanent magnets 6 are not opposed to the magnetic fluid storage part 7 when the screw shaft 2 is located on a stroke central position, and opposed to the magnetic fluid storage part 7 when the screw shaft 2 is displaced from the stroke central position.SELECTED DRAWING: Figure 2
【課題】ストローク端近傍における制動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、ねじ軸２と、ボールナット３と、導電部材４と、磁石保持部材５と、複数の永久磁石６と、磁性流体収容部７と、を含む。ボールナット３は、ねじ軸２と噛み合う。円筒形状の導電部材４は、ボールナット３に固定される。磁石保持部材５は、導電部材４の内側に設けられ、ねじ軸２に固定される。複数の永久磁石６は、磁石保持部材５に固定され、導電部材４の円周方向に磁極の配置を交互に反転して配列され、導電部材４の内周面と隙間を空けて対向する。磁性流体収容部７は、導電部材４の外周面に設けられ、磁性流体を収容する。複数の永久磁石６は、ねじ軸２がストローク中央位置にあるときに磁性流体収容部７と対向せず、ねじ軸２がストローク中央位置から変位したときに磁性流体収容部７と対向する。【選択図】図２
EDDY CURRENT DAMPER
To provide an eddy current damper in which braking force near a stroke end is improved.SOLUTION: An eddy current damper 1 includes a screw shaft 2, a ball nut 3, a conductive member 4, a magnet holding member 5, a plurality of permanent magnets 6, and a magnetic fluid storage part 7. The ball nut 3 is meshed with the screw shaft 2. The cylindrical conductive member 4 is fixed to the ball nut 3. The magnetic holding member 5 is disposed inside the conductive member 4, and fixed to the screw shaft 2. The plurality of permanent magnets 6 are fixed to the magnet holding member 5, magnetic poles of the permanent magnets 6 are arranged in an alternately inverted manner in a circumferential direction of the conductive member 4, and opposed to an inner circumferential surface of the conductive member 4 at a clearance. The magnetic fluid storage part 7 is provided in an outer circumferential surface of the conductive member 4, and stores the magnetic fluid. The plurality of permanent magnets 6 are not opposed to the magnetic fluid storage part 7 when the screw shaft 2 is located on a stroke central position, and opposed to the magnetic fluid storage part 7 when the screw shaft 2 is displaced from the stroke central position.SELECTED DRAWING: Figure 2
【課題】ストローク端近傍における制動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、ねじ軸２と、ボールナット３と、導電部材４と、磁石保持部材５と、複数の永久磁石６と、磁性流体収容部７と、を含む。ボールナット３は、ねじ軸２と噛み合う。円筒形状の導電部材４は、ボールナット３に固定される。磁石保持部材５は、導電部材４の内側に設けられ、ねじ軸２に固定される。複数の永久磁石６は、磁石保持部材５に固定され、導電部材４の円周方向に磁極の配置を交互に反転して配列され、導電部材４の内周面と隙間を空けて対向する。磁性流体収容部７は、導電部材４の外周面に設けられ、磁性流体を収容する。複数の永久磁石６は、ねじ軸２がストローク中央位置にあるときに磁性流体収容部７と対向せず、ねじ軸２がストローク中央位置から変位したときに磁性流体収容部７と対向する。【選択図】図２
EDDY CURRENT DAMPER
渦電流式ダンパ
SANO KUMPEI (author) / NOGAMI YUTAKA (author) / IMANISHI KENJI (author) / NOGUCHI YASUTAKA (author) / MASUI RYOSUKE (author) / NAKAMINAMI SHIGEKI (author) / KIDA HIDENORI (author)
2020-02-06
Patent
Electronic Resource
Japanese