Vehicle seatback and a vehicle seat provided with a vehicle seatback

摘要

A vehicle seatback including a seatback frame provided with a pair of seatback side frame portions and a seatback upper frame portion that connects together upper end portions of the pair of seatback upper frame portions along the seat width direction, and a support member attached to the seatback frame. The support member is provided with a lower neck bearing portion covering the seatback upper frame portion, and a shoulder bearing portion disposed further towards the front than the seatback upper frame portion in the seat front-rear direction. When a load of a specific value or greater acts on the occupant towards the rear in the seat front-rear direction, the shoulder regions of the occupant are pressed against the shoulder bearing portion, suppressing movement of the occupant towards the rear in the seat front-rear direction.

主权项

1. A vehicle seatback comprising:
a seatback frame comprising a pair of seatback side frame portions disposed at either side in a seat width direction and extending in a seat height direction, and a seatback upper frame portion that connects together upper end portions of the pair of seatback side frame portions along the seat width direction and that is attachable with a headrest; and a support member attached to the seatback frame; wherein the pair of seatback side frame portions are respectively disposed at both side end portions, in a seat width direction, of the seat back frame, wherein the support member includes a shoulder bearing portion attached to upper portions of the seatback side frame portions by means of at least one attachment portion C-shaped in cross-section and fitted around the upper portions of the seatback side frame portions, the shoulder bearing portion being disposed further towards a seat front-rear direction front than the seatback upper frame portion, and the shoulder bearing portion supporting a shoulder region of an occupant when a load of a specific value or greater acts on the occupant towards the rear in the seat front-rear direction, wherein the at least one attachment portion is located behind a back portion of the support member, and wherein the support member includes a lower neck bearing portion attached to the seatback upper frame portion, and disposed further towards the front in the seat front-rear direction than the seatback upper frame portion and further towards the rear in the seat-front rear direction than the shoulder bearing portion, the lower neck bearing portion supporting a lower neck region of the occupant when the load of the specific value or greater acts on the occupant.