To fully ensure a swing range of a tie rod.SOLUTION: An electric power steering unit 100 includes a rack housing 34 that accommodates a rack shaft 30, a worm housing 45 including a storage 45a that stores a worm wheel 44 and a boss 45b that projects from the periphery of the storage 45a, and a lid member 46 that is fixed to the boss 45b by means of a bolt 47 and blocks an opening of the storage 45a. At least part of the storage 45a is disposed outside the rack housing 34 in a moving direction of the rack shaft 30. The boss 45b is disposed outside a deformation range DR of a boot 35 that deforms along with a swing of a tie rod 31.SELECTED DRAWING: Figure 2

    【課題】タイロッドの揺動範囲を十分確保する。【解決手段】電動パワーステアリング装置100は、ラックシャフト30を収容するラックハウジング34と、ウォームホイール44を収容する収容部45aと収容部45aの外周面から突出して設けられるボス部45bとを有するウォームハウジング45と、ボス部45bにボルト47を介して固定され収容部45aの開口部を閉塞する蓋部材46と、を備える。収容部45aは、ラックシャフト30の移動方向においてラックハウジング34の外側に少なくとも一部が配置され、ボス部45bは、タイロッド31の揺動に伴い変形するブーツ35の変形範囲DR外に配置される。【選択図】図2


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    Title :

    ELECTRIC POWER STEERING UNIT


    Additional title:

    電動パワーステアリング装置


    Contributors:

    Publication date :

    2020-09-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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