PROBLEM TO BE SOLVED: To provide an electric power steering reduction gear, excellent in quietness, wear resistance, capable of providing a resin composition for worm wheel which is applied to rack assist type electric power steering, therefore, having high reliability when it is applied for a column assist type and a rack assist type, and to provide an electric power steering device using it.SOLUTION: Auxiliary output by an electric motor is transmitted to a steering mechanism of a vehicle in an electric power steering device reduction gear. A following gear of the reduction gear is characterized in that: a resin part formed of polyamide resin 410 is provided in an integrated state on an outer periphery of a metallic core pipe, and a gear tooth is provided on an outer peripheral surface of the resin part.

    【課題】静音性と耐摩耗性に優れ、且つ、ラックアシスト式電動パワーステアリングにも適用可のウォームホイール用樹脂組成物を提供し、これにより、コラムアシスト式は当然のこととして、ラックアシスト式に適用した場合においても、高い信頼性を備えた電動パワーステアリング用減速ギヤ、及びそれが用いられた電動パワーステアリング装置を提供する。【解決手段】電動モータによる補助出力を、車両のステアリング機構に伝達する電動パワーステアリング装置用減速ギヤにおいて、前記減速ギヤの従動歯車が、ポリアミド410樹脂からなる樹脂部を金属製芯管の外周に一体に設け、前記樹脂部の外周面にギヤ歯が形成されたことを特徴とする電動パワーステアリング装置用減速ギヤ。【選択図】図1


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    Title :

    ELECTRIC POWER STEERING DEVICE REDUCTION GEAR


    Additional title:

    電動パワーステアリング装置用減速ギヤ


    Contributors:

    Publication date :

    2015-07-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16H Getriebe , GEARING / B62D MOTOR VEHICLES , Motorfahrzeuge



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