Separation of a joining in a joining part of a closed cross-sectional structure of an upper cross member is suppressed and the rigidity of the upper cross member is ensured. A vehicular seatback frame structure is provided with resin side frames (21, 22), and an upper cross member (30) bridged over between upper parts of the side frames (21, 22). The upper cross member (30) includes a first member (31), and a second member (32) disposed under the first member (31). An opening part is provided in a lower part of the first member (31), the first member (31) has a traverse cross-sectional shape opening to the downward side, an opening part is provided in an upper part of the second member (32), and the second member (32) has a traverse cross-sectional shape opening to the upward side. The opening part of the first member (31) and the opening part of the second member (32) are bonded in a state of facing each other to form a closed cross-sectional structure.
VEHICULAR SEAT BACK FRAME STRUCTURE
RAHMENSTRUKTUR FÜR FAHRZEUGSITZLEHNEN
STRUCTURE DE CADRE DE DOSSIER DE SIÈGE DE VÉHICULE
2021-03-24
Patent
Electronic Resource
English