To provide a thrust generator that can realize miniaturization.SOLUTION: A thrust generator comprises: a thrust generating motor that rotates a plurality of rotors; a plurality of pitch angle changing motors that changes pitch angles of the rotors; and rotation transmission parts that are connected to the pitch angle changing motors; a first motion conversion part; and a second motion conversion part. The first motion conversion part converts rotation of the rotation transmission part into a linear motion of a linear motion shaft. The second motion conversion part converts the linear motion of the linear motion shaft into a rotary motion to change the pitch angle of the rotor. The first motion conversion part comprises: a feed screw shaft that is rotated by a rotation transmission part; a support member that supports the feed screw shaft; a nut that is meshed with the feed screw shaft to be fixed to the linear motion shaft; and a linear motion guide part that guides the nut to move linearly when the feed screw shaft rotates. The linear motion guide part has a pair of parallel guide flat surfaces supported by the support member. At least one of the nut and the linear motion shaft has a pair of parallel guided flat surfaces respectively facing the guide flat surfaces.SELECTED DRAWING: Figure 10

    【課題】小型化を実現可能な推力発生装置を提供する。【解決手段】推力発生装置は、複数の回転翼を回転させる推力発生モータと、回転翼のピッチ角を変更するピッチ角変更モータと、ピッチ角変更モータに連結された回転伝達部と、第1の運動変換部と、第2の運動変換部を備える。第1の運動変換部は、回転伝達部の回転を直動軸の直線運動に変換する。第2の運動変換部は、直動軸の直線運動を回転運動に変換して、回転翼のピッチ角を変更する。第1の運動変換部は、回転伝達部により回転させられる送りねじ軸と、送りねじ軸を支持する支持部材と、送りねじ軸に噛み合わせられ直動軸に固定されたナットと、送りねじ軸の回転時にナットが直線運動するように案内する直動案内部を備える。直動案内部は、支持部材に支持された一対の平行な案内平坦面を有する。ナットと直動軸の少なくとも一方は、案内平坦面にそれぞれ対向する一対の平行な被案内平坦面を有する。【選択図】図10


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    Title :

    THRUST GENERATOR


    Additional title:

    推力発生装置


    Contributors:

    Publication date :

    2021-09-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



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