A ball screw device includes a screw shaft, a nut, a plurality of balls, and an end deflector. The screw shaft has a first thread groove on an outer peripheral surface. The nut has a second thread groove provided on an inner peripheral surface, a notch provided on an end face, and a return hole provided on a bottom surface of the notch orthogonal to an axial direction of the screw shaft and passing through in the axial direction. The plurality of balls rolls between the first thread groove and the second thread groove. The end deflector fits into the notch. The nut includes a curved surface portion at a position of a lateral surface of the notch between the second thread groove and the return hole. In a first section obtained by cutting the nut with a plane orthogonal to the axial direction and passing through the second thread groove and the notch, the curved surface portion includes a portion that draws an arc centered at a point positioned outside the second thread groove in a radial direction around a rotation axis of the nut.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    BALL SCREW DEVICE AND ELECTRIC POWER STEERING DEVICE


    Weitere Titelangaben:

    KUGELSPINDELVORRICHTUNG UND ELEKTRISCHE SERVOLENKVORRICHTUNG
    DISPOSITIF DE VIS À BILLES ET DISPOSITIF DE DIRECTION ASSISTÉE ÉLECTRIQUE


    Beteiligte:
    YOROZU YUSUKE (Autor:in)

    Erscheinungsdatum :

    25.03.2020


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

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



    BALL SCREW DEVICE, ELECTRIC POWER STEERING DEVICE, AND LUBRICANT FOR BALL SCREW DEVICE

    IKEDA MASATO | Europäisches Patentamt | 2023

    Freier Zugriff

    BALL SCREW DEVICE AND ELECTRIC POWER STEERING DEVICE

    YOROZU YUSUKE | Europäisches Patentamt | 2018

    Freier Zugriff

    Ball screw device and electric power steering device

    YOROZU YUSUKE | Europäisches Patentamt | 2021

    Freier Zugriff

    BALL SCREW DEVICE AND ELECTRIC POWER STEERING DEVICE

    MAN YUSUKE | Europäisches Patentamt | 2020

    Freier Zugriff

    BALL SCREW DEVICE AND ELECTRIC POWER STEERING DEVICE

    MAN YUSUKE | Europäisches Patentamt | 2019

    Freier Zugriff