PROBLEM TO BE SOLVED: To provide a steering shaft which achieves suitable impact absorption property and besides, is made lighter in weight than conventional ones.SOLUTION: A steering shaft 1 comprises an upper shaft to which a steering wheel 2 operated by an operator is connected to the distal end side thereof; and a lower shaft 12 provided at the base end side of the upper shaft 11. The upper shaft 11 is composed of a composite material in which a resin is reinforced with a fiber, and comprises: a shaft body part 11a to which the steering wheel 2 is connected; and an impact absorption part 11b provided at the base end side of the shaft body part 11a, and having an elastic modulus smaller than that of the shaft body part 11a. The lower shaft 12 is formed in a recessed shape opening toward the distal end side and fitted onto the outer periphery of the impact absorption part 11b while the bottom surface inside the opening abuts on the end surface on the base end side, of the impact absorption part 11b.

    【課題】ステアリングシャフトにおいて、好適な衝撃吸収特性を実現しつつ、従来に比べて軽量化を図る。【解決手段】ステアリングシャフト1は、運転者に操作されるステアリングホイール2が先端側に連結されるアッパーシャフト11と、当該アッパーシャフト11の基端側に設けられるロアーシャフト12とを備える。アッパーシャフト11は、樹脂を繊維で強化した複合材料で構成されるとともに、ステアリングホイール2が連結されるシャフト本体部11aと、シャフト本体部11aの基端側に設けられ、弾性率がシャフト本体部11aよりも小さい衝撃吸収部11bとを有する。ロアーシャフト12は、先端側へ開口する凹状に形成されるとともに、開口内の底面が衝撃吸収部11bの基端側の端面と当接した状態で、衝撃吸収部11bの外周に嵌合されている。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    STEERING SHAFT


    Additional title:

    ステアリングシャフト


    Contributors:

    Publication date :

    2015-09-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / F16F SPRINGS , Federn



    STEERING SHAFT AND METHOD OF MANUFACTURING STEERING SHAFT

    ISHIKAWA TOMOYA | European Patent Office | 2020

    Free access

    Steering shaft

    MAEDA MITSUTERU | European Patent Office | 2025

    Free access

    STEERING SHAFT

    ISHIKAWA TOMOYA | European Patent Office | 2020

    Free access

    STEERING SHAFT COMPONENT STEERING SHAFT AND PRODUCTION METHOD

    European Patent Office | 2017

    Free access

    STEERING SHAFT

    MAEDA KOKI | European Patent Office | 2025

    Free access