Patent ID: 8789883

Claim:
A cushion structure of a vehicle seat, comprising: a cushion pad formed of expanded resin and configuring a cushion part of the vehicle seat, the cushion pad including a front face part comprising an occupant receiving side and a back face part formed with a groove part; and a reinforcing sheet material which is harder than the cushion pad and is provided on the back face part of the cushion pad, wherein the reinforcing sheet material is provided integrally with the cushion pad by integral molding in which the reinforcing sheet is set in a mold at an expansion molding of the cushion pad, thereby being impregnated with expandable resin and hardened, wherein the groove part includes a connecting hole which is connected to an air blower, and an air distributing groove for distributing air supplied to the connecting hole in a surface direction in the back face part of the cushion pad, wherein a blow-off hole is formed at an end part of the groove part and penetrates the cushion pad, wherein the reinforcing sheet material is formed of a single cloth material in a shape of a flexible sheet and includes a lateral face part which is formed while abutting the back face part of the cushion pad and integrally hardened therewith, and a vertical face part which is formed while abutting an upright wall face of the connecting hole and an upright wall face of the air distributing groove by being cut and bent from the lateral face part and integrally hardened therewith.