Abstract: A vehicle seat that may assure stiffness of a seatback and that may realize a reduction in weight. In the present rear seat for a vehicle, a substantially X-shaped X-rib (24) is joined to a panel frame (22) of a rear seatback. A first reinforcement portion (24A) of the X-rib (24) spans in a linear shape between an anchor wire (68), which is a point of action of a load, and a first supported portion (22A) of the panel frame (22), which is supported at a vehicle body via a turning hinge (48). A second reinforcement portion (24B), which has a length direction middle portion in common with the first reinforcement portion (24A), spans in a linear shape between a second supported portion (22B) of the panel frame (22), which is supported at the vehicle body via a turning hinge (56), and a third supported portion (22C) of the panel frame (22), which is supported at the vehicle body via a lock mechanism (64).

Abstract: A vehicle seat that may assure stiffness of a seatback and that may realize a reduction in weight. In the present rear seat for a vehicle, a substantially X-shaped X-rib (24) is joined to a panel frame (22) of a rear seatback. A first reinforcement portion (24A) of the X-rib (24) spans in a linear shape between an anchor wire (68), which is a point of action of a load, and a first supported portion (22A) of the panel frame (22), which is supported at a vehicle body via a turning hinge (48). A second reinforcement portion (24B), which has a length direction middle portion in common with the first reinforcement portion (24A), spans in a linear shape between a second supported portion (22B) of the panel frame (22), which is supported at the vehicle body via a turning hinge (56), and a third supported portion (22C) of the panel frame (22), which is supported at the vehicle body via a lock mechanism (64).

Abstract: A frame structure of a seat back for a vehicle contains a seat back frame which includes a framework disposed endlessly along a peripheral edge of a panel frame in a plane form with a substantially rectangular shape, the framework including a steel tube portion with a closed rectangular cross-section into which a pressed member is formed by welding in accordance with a position where the seat back for the vehicle is fixed to a vehicle body, the steel tube portion contains a surface on which the seat back for the vehicle is fixed.

Abstract: An object of the present invention is to provide the frame structure of the seat back for the vehicle and the seat back for the vehicle with the same frame structure which is capable of securing a necessary strength or a stiffness of the seat back for the vehicle, while at the same time decreasing the weight of the seat back. According to the present invention, there is provided a frame structure of a seat back for a vehicle comprising a seat back frame which includes a framework disposed to be endlessly along a peripheral edge of a panel frame in a plane form with a substantially rectangular shape, said framework includes a steel tube portion with a closed rectangular cross section into which a pressed member is formed by welding in accordance with a position where the seat back for the vehicle is fixed to a vehicle body, said steel tube portion comprising a surface on which the seat back for the vehicle is fixed.

Abstract: An armrest apparatus includes a fixed shaft fixed to a seat frame, a rotation plate integrally connected to an armrest body and having a tubular portion into which the fixed shaft is inserted, a lock spring wound tightly on outer peripheral surfaces of a part of the fixed shaft and the tubular portion of the rotation plate in a free condition, a cancellation block rotatably mounted on a pivot shaft, and a cam unit mounted on a distal end of the fixed shaft and including a lock-canceling cam portion and a re-lock cam portion, the re-lock cam portion being spaced from the lock-canceling cam portion in a direction of rotation of the cam member.

Abstract: An armrest apparatus comprises a fixed shaft fixed to a seat frame, a rotation plate integrally connected to an armrest body and having a tubular portion into which the fixed shaft is inserted, a lock spring wound tightly on outer peripheral surfaces of a part of the fixed shaft and the tubular portion of the rotation plate in a free condition, a cancellation block rotatably mounted on a pivot shaft, and a cam unit mounted on a distal end of the fixed shaft and including a lock-canceling cam portion and a re-lock cam portion, the re-lock cam portion is spaced from the lock-canceling cam portion in a direction of rotation of the cam member.