To facilitate replacement of a bearing assembly provided at a mechanism which holds a propeller attachment part on a hub.SOLUTION: A thrust generator rotates rotary wings around a rotation axis of a motor to generate thrust force and includes: the rotary wings; rotary wing holding parts each of which holds the rotary wing and may rotate around a second axis intersecting with the rotation axis at a predetermined angle; a motor which rotates the rotary wings around the rotation axis; a hub which is attached to the motor and rotates with the motor; bearings each of which is provided in the hub and supports the rotary wing holding part so that the rotary wing holding part can rotate around the second axis; pitch angle change mechanisms each of which rotates the rotary wing holding part around the second axis and changes a pitch angle of the rotary wing. The hub has openings which allow the exterior and the bearings to communicate with each other.SELECTED DRAWING: Figure 1
【課題】プロペラ取付部をハブに保持する機構に設けられた軸受アッセンブリの交換作業を容易に行うことができるようにすること。【解決手段】モータの回転軸回りに回転翼を回転させることにより推力を発生する推力発生装置であって、前記回転翼と、前記回転翼を保持し、前記回転軸に所定の角度で交わる第2の軸回りに回転可能な回転翼保持部と、前記回転軸回りに前記回転翼を回転させるモータと、前記モータに取り付けられ、前記モータと共に回転するハブと、前記ハブ内に設けられ、前記回転翼保持部を前記第2の軸回りに回転可能に支持する軸受と、前記回転翼保持部を前記第2の軸回りに回転させることにより前記回転翼のピッチ角を変更するピッチ角変更機構と、を備え、前記ハブは外部と前記軸受を連通する開口部を有する。【選択図】 図1
THRUST GENERATOR
推力発生装置
2022-02-25
Patent
Electronic Resource
Japanese