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 11, valve member mounting parts 46 protruding from the first shaft part 43 in a radial direction and valve members 50 are arranged. When the rotor 30 is rotated in a first direction R1, a valve element part 54 of the valve member 50 receiving fluid pressure blocks a flow path groove 48 so that damper force is generated. The valve member 50 includes an inclined surface 57 for receiving fluid pressure directed to radially inward when the rotor 30 is rotated in a direction opposite to the first direction R1. A gap between the valve member 50 and an inner peripheral face 27 of the case 20 is expanded by the fluid pressure acting on the inclined surface 57, so that the valve member 50 quickly moves to a flow path open position 50B. Thus, 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部材取付部４６および弁部材５０が配置される。ロータ３０が第１方向Ｒ１に回転すると、流体圧を受けた弁部材５０の弁体部５４が流路溝４８を塞ぐので、ダンパ力が発生する。弁部材５０は、ロータ３０が第１方向Ｒ１とは反対方向へ回転する際に径方向内側を向く流体圧を受ける傾斜面５７を備える。傾斜面５７に作用する流体圧によって弁部材５０とケース２０の内周面２７との隙間が拡がるので、弁部材５０が素早く流路開放位置５０Ｂへ移動する。従って、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