To prevent deformation of a center pillar to an indoor side by suppressing collapse of the closed cross-sectional structure of a side sill, which is formed by butting of a side sill stiffener and a side sill inner.SOLUTION: A side sill structure of an automobile includes a side sill 11 in which a stiffener 15 and an inner 16 are joined at upper and lower flanges 15a, 16a, 15b, 16b to form a closed cross section extending in the front-rear direction, a center pillar 12 having a lower end joined to a side wall of the stiffener 15, and bulkheads 31a to 31d joined to the stiffener 15. The side sill 11 has spot weld portions (welded portions) 22 in which an upper flange 15a of the stiffener 15 and an upper flange 16a of the inner 16 are welded to each other at a position where an upper wall 15c of the stiffener 15 is higher than an upper wall 16c of the inner 16. The bulkheads 31a to 31d are configured to each have bulkhead interference portions (interfering portions) 1g that interfere with the upper flange 16a of the inner 16 in a side collision state.SELECTED DRAWING: Figure 4

    【課題】サイドシルスチフナ及びサイドシルインナの突合せによるサイドシルの閉断面構造の崩壊を抑制して、センタピラーの室内側への変形を防止すること。【解決手段】自動車のサイドシル構造は、スチフナ15とインナ16を上下のフランジ15a,16a,15b,16bで結合して前後に延びる閉断面を形成するサイドシル11と、スチフナ15の側壁に下端が結合されたセンタピラー12と、スチフナ15に結合するバルクヘッド31a〜31dとを備え、サイドシル11は、スチフナ15の上壁15cがインナ16の上壁16cよりも高い位置で、スチフナ15の上フランジ15aとインナ16の上フランジ16aとが溶接されたスポット溶接部(溶接部)22を有し、バルクヘッド31a〜31dは、インナ16の上フランジ16aに側突状態で干渉するバルクヘッド干渉部(干渉部)1gを有する構成とした。【選択図】図4


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    Title :

    SIDE SILL STRUCTURE OF AUTOMOBILE


    Additional title:

    自動車のサイドシル構造


    Contributors:

    Publication date :

    2021-04-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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