SEAT BACK FRAME AND VEHICLE SEAT

To achieve both retention of a seated person's posture during normal running of a vehicle and protection of the seated person in the event of a rear surface collision of a vehicle.SOLUTION: A seat back frame 32 includes: left and right side frames 34 extending in a seat vertical direction in le...

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Main Authors KITANAKA FUMIKADO, NAGUMO KENJI, YOSHIGA KENSUKE, MIZUNO AKIHIKO, KOBAYASHI DAISUKE
Format Patent
LanguageEnglish
Japanese
Published 07.07.2023
Subjects
BEDS
CHAIRS
COFFEE MILLS
DOMESTIC ARTICLES OR APPLIANCES
FURNITURE
HUMAN NECESSITIES
PERFORMING OPERATIONS
SEATS SPECIALLY ADAPTED FOR VEHICLES
SOFAS
SPICE MILLS
SUCTION CLEANERS IN GENERAL
TRANSPORTING
VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDEDFOR
VEHICLES IN GENERAL
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Summary:To achieve both retention of a seated person's posture during normal running of a vehicle and protection of the seated person in the event of a rear surface collision of a vehicle.SOLUTION: A seat back frame 32 includes: left and right side frames 34 extending in a seat vertical direction in left and right side parts of a seat back 30 of a vehicle seat 10; a lower panel 40 (a lower frame) bridged between rear ends of lower end parts of the left and right side frames 34; and a sacrum supporting part 42 extending from the lower end of the lower panel 40 to a seat front side and supporting the sacrum part of a seated person from a seat rear side. The sacrum support part 42 is provided with a bending portion 42B1 (a fragile site) that is weakened against a load from the seat front side.SELECTED DRAWING: Figure 1 【課題】通常の車両走行時における着座者の姿勢保持と、車両の後面衝突時における着座者の保護とを両立する。【解決手段】シートバックフレーム３２は、車両用シート１０のシートバック３０の左右の側部内でシート上下方向に延在する左右のサイドフレーム３４と、左右のサイドフレーム４３の下端部の後端部間に架け渡されたロアパネル４０（ロアフレーム）と、ロアパネル４０の下端部からシート前方側へ延出され、着座者の仙骨部をシート後方側から支持する仙骨支持部４２とを備えている。仙骨支持部４２には、シート前方側からの荷重に対して脆弱化された曲げ部４２Ｂ１（脆弱部）が設けられている。【選択図】図１
Bibliography:Application Number: JP20210213144