To provide a joint body capable of simply and firmly joining a plate-like member and a pipe-like member, and being reduced in weight, and to provide an automobile seat frame.SOLUTION: A joint body includes: a thin plate formed with a plurality of through holes along the outer periphery; a first member which has a base part partially brought into contact with the thin part, and a projection projecting to a front face at a side contacting the thin plate as the front face of the base part, and inserted into the through holes; and a second member arranged at an opposite side to the base part via the thin plate and composed of a material in the same series as the first member. The thin plate is composed of a material whose specific gravity is smaller than those of the materials composing the first member and the second member. Parts of the second member and an end part at an opposite side to a side connected to the base part of the projection are joined by melting solidification, and a hardness difference after joining in a 30% region in a direction orthogonal to a joint boundary face around the joint boundary face between the second member and the projection is 90% or less in relation to a hardness difference before joining.SELECTED DRAWING: Figure 3

    【課題】板状の部材とパイプ状の部材とを簡易かつ強固に接合するとともに、軽量化することができる接合体および自動車用シートフレームを提供すること。【解決手段】外周に沿って複数の貫通孔が形成される薄板と、一部が薄板に接する基部と、基部の表面であって薄板と接する側の表面に対して突出し、貫通孔に挿通されている突出部とを有する第1部材と、薄板を介して基部と反対側に配置され、第1部材と同じ系統の材料からなる第2部材と、を備え、薄板は、第1部材および第2部材を構成する材料よりも比重の小さい材料からなり、第2部材と、突出部の基部に連なる側と反対側の端部とは、各々の一部が溶融固化して接合されており、第2部材と突出部との接合界面を中心とし、該接合界面に対して直交する方向の30%の範囲における接合後硬度差が、接合前硬度差に対して90%以下となっている。【選択図】図3


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    Title :

    JOINT BODY AND AUTOMOBILE SEAT FRAME


    Additional title:

    接合体および自動車用シートフレーム


    Contributors:
    YAMAUCHI YUICHIRO (author) / YODA HISASHI (author) / SATO TAKUYA (author) / GOTO KATSUJI (author) / ANDO KOICHI (author) / SATO AYANE (author)

    Publication date :

    2019-06-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet



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