PROBLEM TO BE SOLVED: To provide an aluminum die-cast steering column which causes few variations in quality of thick-walled and thin-walled parts, and which eliminates a strength decreasing factor and variations in strength.SOLUTION: In an aluminum die-cast steering column for steering for an automobile, a ratio between average hardness A (HRB) of a surface of a part with maximum thickness and average hardness B (HRB) of a surface of a part with minimum thickness satisfies the inequality: 0.8≤(A/B)≤1.0.

    【課題】厚肉部と薄肉部との品質のバラツキが少なく、強度低下要因や強度バラツキのないアルミダイカスト製のステアリングコラムを提供する。【解決手段】自動車用ステアリングのアルミダイカスト製ステアリングコラムであって、肉厚が最大となる部分の表面の平均硬さA(HRB)と、肉厚が最小となる部分の表面の平均硬さB(HRB)との比が、0.8≰(A/B)≰1.0を満足する。【選択図】図1


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    Title :

    ALUMINUM DIE-CAST STEERING COLUMN


    Additional title:

    アルミダイカスト製ステアリングコラム


    Contributors:

    Publication date :

    2015-09-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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