PROBLEM TO BE SOLVED: To provide a button lifting device capable of making a fleet angle zero as well as preventing an increase in size of the device.SOLUTION: A feeding pulley 4 is arranged swingable about a reference line C3 which is in parallel with a direction perpendicular to a direction of a center line C1 of a main shaft 22: swingable within a predetermined angle θ1 in one of directions that, with respect to a reference direction N where a direction of a center line C2 of a rotation support shaft 41 is in parallel with the center line C1 of the main shaft 22 of a drum 2, one of end sides of the center line C2 of the rotation support shaft 41 is separated away from the center line C1 of the main shaft 22; as well as swingable within a predetermined angle θ2 in the other one of the directions that, with respect to the reference direction N, the other one of the end sides of the center line C2 of the rotation support shaft 41 is separated away from the center line C1 of the main shaft 22.SELECTED DRAWING: Figure 5
【課題】フリートアングルを零にすることができ、かつ大型化を防止することのできるバトン昇降装置を提供することを課題としている。【解決手段】繰出用滑車4は、回転支持軸41の中心線C2の方向がドラム2の主軸22の中心線C1に平行となる基準方向Nに対して回転支持軸41の中心線C2の一端側が主軸22の中心線C1から遠ざかる一の方向に所定角度θ1揺動変位する範囲及び基準方向Nに対して回転支持軸41の中心線C2の他端側が主軸22の中心線C1から遠ざかる他の方向に所定角度θ2揺動変位する範囲内で、主軸22の中心線C1に直交する方向に平行な方向の基軸線C3の回りに揺動自在に設置されていることを特徴としている。【選択図】図5
BUTTON LIFTING DEVICE
バトン昇降装置
2017-09-21
Patent
Electronic Resource
Japanese
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