To provide a transmission structure of a helicopter, which is improved in dry-run performance.SOLUTION: A transmission structure of a helicopter according to one embodiment, which is a transmission structure that transmits power from a motor of the helicopter to a rotary wing, comprises: a housing; an input shaft that transmits power of the motor to a gear arranged in the housing; a bearing that rotatably bears the input shaft in the housing, and has an annular inner ring that bears the input shaft, an annular outer ring arranged outside in a radial direction of the inner ring and fixed to the housing, and a plurality of rolling bodies sandwiched between the inner ring and the outer ring; and a sleeve that is tucked down between an inner peripheral surface of the inner ring and the input shaft, and is lower in heat-conductivity than the inner ring and the input shaft.SELECTED DRAWING: Figure 1

    【課題】ヘリコプターのトランスミッション構造において、ドライラン性能を向上させる。【解決手段】一態様に係るヘリコプターのトランスミッション構造は、ヘリコプターの原動機から回転翼に動力を伝達するトランスミッション構造であって、ハウジングと、ハウジング内に配置されたギヤに原動機の動力を伝達する入力軸と、ハウジング内において入力軸を回転可能に支持する軸受であって、入力軸を保持する環状の内輪と、内輪の径方向外方に配置され、ハウジングに対して固定された環状の外輪と、内輪及び外輪の間に挟まれた複数の転動体とを有する軸受と、内輪の内周面及び入力軸の間に挟み込まれた、内輪及び入力軸に比べて熱伝導率が低いスリーブと、を備える。【選択図】図1


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    Title :

    TRANSMISSION STRUCTURE OF HELICOPTER


    Additional title:

    ヘリコプターのトランスミッション構造


    Contributors:

    Publication date :

    2021-07-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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