FLUID DAMPER DEVICE

To provide a fluid damper device for generating damper force even in the operation in a minute angle region.SOLUTION: A fluid damper device 10 has a damper chamber 11 formed between a bottomed cylindrical case 20 and a first shaft part 43 of a rotor 30 arranged in the case 20. In the damper chamber...

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1. Verfasser: OSHIMA YUUKI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a fluid damper device for generating damper force even in the operation in a minute angle region.SOLUTION: A fluid damper device 10 has a damper chamber 11 formed between a bottomed cylindrical case 20 and a first shaft part 43 of a rotor 30 arranged in the case 20. In the damper chamber 11, valve element holding parts 46 protruding from the first shaft part 43 in a radial direction. and valve elements 50 are arranged. When the rotor 30 is rotated in a first direction R1, the valve element 50 receiving fluid pressure rises up to block a gap between the case 20 and itself so that damper force is generated. The valve element holding part 46 includes a second protruding part 463 located on a side opposite to the first direction R1 with respect to the valve element 50, and the second protruding part 463 includes a fluid reservoir 70 recessed radially inward. When the rotor 30 is rotated to a direction opposite to the first direction R1, fluid 12 in the fluid reservoir 70 quickly moves to the valve element 50 to cause the valve element 50 to fall over, so that damper force is generated even in operation in a minute angle region.SELECTED DRAWING: Figure 5 【課題】流体ダンパ装置の微小角度領域の動作においてもダンパ力を発生させる。【解決手段】流体ダンパ装置10は、有底筒状のケース20と、ケース20内に配置されるロータ30の第1軸部43との間に、ダンパ室11が形成されている。ダンパ室11には、第1軸部43から径方向に突出する弁体保持部46および弁体50が配置される。ロータ30が第1方向R1に回転すると、流体圧を受けた弁体50が立ち上がってケース20との隙間を塞ぐので、ダンパ力が発生する。弁体保持部46は、弁体50に対して第1方向R1とは反対側に位置する第2凸部463を備え、第2凸部463は、径方向内側へ凹む流体溜まり70を備える。ロータ30が第1方向R1とは反対方向に回転する際、流体溜まり70の流体12が弁体50へ向かって素早く移動して弁体50が倒れるので、微小角度領域の動作においてもダンパ力が発生する。【選択図】図5