SEAT FRAME

摘要

The purpose of the present invention is to make a closed-cross-section structural section and an open-cross-section structural section appropriately coexist in a side frame. A side frame (10) that is provided at both ends of a vehicle seat in the width direction is provided with: a closed-cross-section structural section (10a) that forms one end section in a frame-extending direction; and an open-cross-section structural section (10b) that forms a section continuous with the closed-cross-section structural section (10a) in the frame-extending direction. Furthermore, a space (Q) that is formed by terminating a section continuing in the cross-section of the open-cross-section structural section (10b) is larger in a distant region (10y), of the open-cross-section structural section, that is located at a position distant from the closed-cross-section structural section (10a) in the frame-extending direction than in an adjacent region (10x) that is adjacent to the closed-cross-section structural section (10a) in the frame-extending direction.