Patent ID: 8714654
Filing Date: 2014-05-06
Classification: B60N

Abstract:
1. A vehicle seat comprising: a seat back and a headrest attached to the seat back, wherein the seat back comprises: the seat back further comprising: wherein: a core cavity section formed by removing a portion of the cushion material opposed to the side frame section is formed in a region of the cushion material located on a front side of the side frame section; a thickness of a region of the cushion material in which the core cavity section is formed is smaller than a thickness of another region of the cushion material for supporting a back of an occupant who is seated on the vehicle seat; the core cavity section comprises an unsupported region at a seat center side of the flat section of the pipe shaped member in which a surface of the core cavity section is not supported by any member for a majority of the core cavity section including a center portion of the core cavity section; the cushion material is provided with a thin-walled portion that is thinner than other portions of a region of the cushion material where the core cavity is formed, wherein the thin-walled portion is structured as a hinge about which the center portion of the core cavity deforms; and the flat section of the pipe shaped member and the thin-walled portion of the cushion material are aligned with each other in a front-to-rear direction of the seat.