A compressive residual stress portion (50) having a compressive residual stress from a surface of a wire (40) to a first depth (D1) is formed between end turn portions (12a, 12b) of a coil spring (12). The end turn portion (12a) includes a first portion (12a 1 ), a second portion (12a 2 ), and a third portion (12a 3 ). The first portion (12a 1 ) is always in contact with a spring seat irrespective of a load applied to the coil spring (12). The second portion (12a 2 ) contacts the spring seat when the load applied to the coil spring (12) is large, and is separated from the spring seat when the load is small. The third portion (12a 3 ) is always separated from the spring seat irrespective of the magnitude of the load. In the end turn portion (12a), in a region including the second portion (12a 2 ), a deep residual stress portion (51) is formed by ultrasonic shot peening. The deep residual stress portion (51) has a compressive residual stress from a surface of the wire (40) to a second depth (D2) deeper than the first depth (D1).


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    SUSPENSION SPRING DEVICE AND SUSPENSION COIL SPRING


    Weitere Titelangaben:

    AUFHÄNGUNGSFEDERVORRICHTUNG UND AUFHÄNGUNGSSCHRAUBENFEDER
    DISPOSITIF DE RESSORT DE SUSPENSION ET RESSORT HÉLICOÏDAL DE SUSPENSION


    Beteiligte:
    TANGE AKIRA (Autor:in) / OKADA HIDEKI (Autor:in)

    Erscheinungsdatum :

    30.01.2019


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    F16F SPRINGS , Federn / B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS



    SUSPENSION SPRING APPARATUS AND SUSPENSION COIL SPRING

    TANGE AKIRA / OKADA HIDEKI | Europäisches Patentamt | 2015

    Freier Zugriff

    SUSPENSION COIL SPRING DEVICE

    SHIBATA YUICHI / SUWA TAISUKE | Europäisches Patentamt | 2021

    Freier Zugriff

    SUSPENSION COIL SPRING

    SAYAMA HIRONOBU | Europäisches Patentamt | 2018

    Freier Zugriff

    SUSPENSION COIL SPRING

    SAYAMA HIRONOBU | Europäisches Patentamt | 2017

    Freier Zugriff

    SUSPENSION COIL SPRING

    SAYAMA HIRONOBU | Europäisches Patentamt | 2015

    Freier Zugriff