To improve a sealing property of a rotating portion changing a pitch angle.SOLUTION: A thrust generator is equipped with a first motor that generates thrust of a rotary blade, a second motor that generates a rotary motion changing a pitch angle of the rotary blade, a first converting portion that converts the rotary motion of the second motor into a linear motion, and a second converting portion that converts the linear motion converted by the first converting portion into a rotary motion. The second converting portion is equipped with a rack-and-pinion that generates the rotary motion on the basis of the linear motion, a supporting shaft that transmits the rotary motion of a pinion of the rack-and-pinion to the rotary blade, a case that stores the rack-and-pinion and the supporting shaft, a grip that is united with the supporting shaft and holds the rotary blade, a bearing that rotatably supports the supporting shaft in the case, and a seal material that seals the case at a root position of the grip.SELECTED DRAWING: Figure 15
【課題】ピッチ角を変化させる回転部のシール性を向上させる。【解決手段】回転翼の推力を発生させる第1モータと、前記回転翼のピッチ角を変化させる回転運動を発生させる第2モータと、前記第2モータの回転運動を直線運動に変換する第1変換部と、前記第1変換部で変換された直線運動を回転運動に変換する第2変換部とを備え、前記第2変換部は、前記直線運動に基づいて前記回転運動を発生するラックアンドピニオンと、前記ラックアンドピニオンのピニオンの回転運動を前記回転翼に伝える支持軸と、前記ラックアンドピニオンと支持軸を収容するケースと、前記支持軸に結合され、前記回転翼を保持するグリップと、前記ケース内で前記支持軸を回転可能に支持する軸受と、前記グリップの付け根の位置で前記ケースをシールするシール材とを備える。【選択図】 図15
THRUST GENERATOR
推力発生装置
2022-03-04
Patent
Electronic Resource
Japanese