PROBLEM TO BE SOLVED: To realize a structure capable of achieving ensuring the positioning performance of a steering shaft in an ordinary state and ensuring the prevention of a steering wheel from being pushed up at a time of a primary collision by using low cost components as constituent components.SOLUTION: A snap ring 40 locked to a locking groove 26a formed in an outer circumferential surface of an inner shaft 8b supports an inner ring 19 of a ball bearing 18c with respect to the inner shaft 8b so that the inner ring 19 can be detached in response to an impact load at a time of a primary collision. Inner side surfaces 51a and 51b of the locking groove 26a are each formed into an inclined surface inclined in a direction of increasing a width of this locking groove 26a radially outward. Furthermore, the snap ring 40 is an incomplete annular ring formed by bending a linear material having a circular cross-section.

    【課題】構成各部品として低コストなものを使用する事で、通常状態でのステアリングシャフトの位置決め性確保と一次衝突時に於けるステアリングホイールの突き上げ防止の確実化とを精度良く両立させられる構造を実現する。【解決手段】インナシャフト8bの外周面に形成された係止溝26aに係止した止め輪40により玉軸受18cの内輪19を、前記インナシャフト8bに対し、一次衝突時の衝撃荷重により離脱可能に支持する。前記係止溝26aの両内側面51a、51bを、径方向外方に向かう程この係止溝26aの幅を拡げる方向に傾斜した傾斜面とする。又、前記止め輪40を、断面円形の線材を曲げ形成して欠円環状としたものとする。【選択図】図2


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    Title :

    STEERING SHAFT ROTATION SUPPORT DEVICE AND VEHICLE STEERING DEVICE


    Additional title:

    ステアリングシャフト用回転支持装置及び自動車用ステアリング装置


    Contributors:

    Publication date :

    2015-09-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / F16C SHAFTS , Wellen



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