To provide a seat back for a chair which minimizes shape deformation of a frame itself serving as a base of the seat back, securely holds the back of an occupant, and can change in response to turing operation only if an occupant wants to change the seat back when turning rearward.SOLUTION: A seat back 100 for a chair according to the present invention includes: a support part 10 which is attached to a seat part directly or through a reclining mechanism 91; a lateral seat back 40 which is formed so as to rotate relative to the support part 10 directly or indirectly; and a biasing member 60 which biases the lateral seat back 40 forward.SELECTED DRAWING: Figure 1

    【課題】シートバックのベースとなるフレーム自体が形状変形することを最小限に抑えて背中を確実にホールドするとともに、後方へ振り向いた場合において変化させたい場合のみ振り向き動作に応じて変化可能な椅子用シートバックを提供する。【解決手段】本発明にかかる椅子用シートバック100は、座部に対し、直接又はリクライニング機構91を介して取付けられた支持部10と、支持部10に対し、直接的又は間接的に回転可能に形成された側方シートバック40と、側方シートバック40を前方側へ付勢する付勢部材60と、を備えたことを特徴とする。【選択図】図1


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    Title :

    SEAT BACK FOR CHAIR AND VEHICLE SEAT


    Additional title:

    椅子用シートバック及び車両用シート


    Contributors:

    Publication date :

    2019-05-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / A47C Stühle , CHAIRS



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