To prevent poor deployment of an airbag inflated and deployed from a seat rear side of an upper part of a vehicle seat to a seat front side.SOLUTION: An airbag device 30 comprises an airbag 32 supplied with gas upon vehicle collision to be inflated and deployed from a seat rear side of an upper part of a vehicle seat 12 to a seat front side. The airbag 32 comprises a front-rear chamber 34 and an airbag body 40. The front-rear chamber 34 comprises: a pair of left and right front-rear extension parts 34A that passes through left and right sides of a head H of an occupant D and is inflated and deployed to the seat front side; and a connection part 34B connecting front end parts of the pair of front-rear extension parts 34A in a seat left-right direction. The airbag body 40 is supplied with gas through a communication hole located at a seat rear side of the connection part 34B of the front-rear chamber 34 inflated and deployed. Due to inflation and deployment of the front-rear chamber 34, the airbag body 40 passes through a gap between a vehicle ceiling and the head H from the seat rear side to the seat front side, and is then inflated and deployed toward the seat rear side.SELECTED DRAWING: Figure 1

    【課題】車両用シートの上部のシート後方側からシート前方側へ膨張展開するエアバッグの展開不良を防止する。【解決手段】エアバッグ装置30は、車両の衝突時にガスを供給され、車両用シート12の上部のシート後方側からシート前方側へ膨張展開するエアバッグ32を備えている。エアバッグ32は、前後チャンバ34とエアバッグ本体40とを有する。前後チャンバ34は、乗員Dの頭部Hの左右両側を通ってシート前方側へ膨張展開する左右一対の前後延在部34A、及び一対の前後延在部34Aの前端部をシート左右方向に繋ぐ連結部34Bを有する。エアバッグ本体40は、膨張展開した前後チャンバ34の連結部34Bのシート後方側に位置する連通孔を介してガスが供給される。このエアバッグ本体40は、前後チャンバ32の膨張展開によって車両の天井と頭部Hとの間の隙間をシート後方側からシート前方側へ通過した後にシート後方側へ向けて膨張展開する。【選択図】図1


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    Title :

    AIRBAG DEVICE AND OCCUPANT PROTECTION DEVICE


    Additional title:

    エアバッグ装置及び乗員保護装置


    Contributors:

    Publication date :

    2024-04-25


    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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