| 摘要 |
PROBLEM TO BE SOLVED: To provide a seat back frame which achieves strength improvement and weight reduction.SOLUTION: The seat back frame includes a pair of side frames respectively formed by joining a plurality of members, having a hollow shape with a cross section closed, and respectively supporting the right and left sides of a vehicle seat; and has a plate-like first curved member having a first main surface part forming a curved shape along a front face of the seat; a plate-like second curved member having a second main surface part forming a curved shape along a back face of the seat; a plate-like first connecting member connecting end parts of the first and second curved members facing the outside of the seat; and a plate-like second connecting member connecting the end parts of the first and second curved members facing the inside of the seat, as a plurality of joining members. |
