To obtain a structure of a rack-and-pinion type steering gear unit which can increase a force for pressing a rack guide toward a rack shaft, and can prevent the direct contact of an external peripheral face of the rack guide and an internal peripheral face of a housing with each other.SOLUTION: First elastic rings 12a, 12b are gripped between an external peripheral face of a rack guide 28 and an internal peripheral face of a third accommodation part 16. The rack guide 28 has a first cylinder part 32 extending to a direction approximating a cover 29 at a rear side part, and the cover 29 fixed to an opening end 18 of the third accommodation part 16 has a second cylinder part 40 extending to a direction approximating the rack guide 28. The first cylinder part 32 and the second cylinder part 40 are fit to each other so as to be movable to the third accommodation part 16 in an axial direction. A coil spring 30 whose coil diameter is changed to the axial direction is arranged between the rack guide 28 and the cover 29.SELECTED DRAWING: Figure 3

    【課題】ラックガイドをラック軸に向けて押圧する力を増大でき、かつ、ラックガイドの外周面とハウジングの内周面とが直接接触することを防止できる、ラックアンドピニオン式ステアリングギヤユニットの構造を実現する。【解決手段】ラックガイド28の外周面と第三収容部16の内周面との間に、第一弾性リング12a、12bを挟持する。ラックガイド28は、後側部に、カバー29に近づく方向に伸長した第一筒部32を有し、第三収容部16の開口端18に固定されたカバー29は、ラックガイド28に近づく方向に伸長した第二筒部40を有する。第一筒部32と第二筒部40とを、第三収容部16の軸方向に関する相対移動を可能に嵌合する。ラックガイド28とカバー29との間に、軸方向に関してコイル径が変化したコイルばね30を配置する。【選択図】図3


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    Title :

    RACK-AND-PINION TYPE STEERING GEAR UNIT


    Additional title:

    ラックアンドピニオン式ステアリングギヤユニット


    Contributors:

    Publication date :

    2020-01-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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