| 摘要 |
<p>An automobile seat having a seatback formed by assembling a metal seatback frame of a substantially rectangular frame shape to a base frame, where the seatback frame is composed of left and right side frame sections (10a, 10b), an upper frame section (11) placed between upper sections of the side frame sections (10a, 10b), and a lower frame section (12) placed between lower sections of the side frame sections (10a, 10b). The lower frame section (12) is formed by bending a metal sheet material and is fitted, at its left and right side bracket sections (12a, 12b), between lower back sections of the side frame sections (10a, 10b), the left and right side bracket sections (12a, 12b) being attached and fixed to lower edges of the side frame sections (10a, 10b). The plate surface of the lower frame section (12) is curved in a semicircular arc shape that swells out forward by a predetermined dimension within the inner width of the plate surface. A narrowed section (13) for absorbing impact caused by bending deformation of the seatback frame (1) is provided at the seatback, and the narrowed section (13) is linear in the longitudinal direction and is placed to reach a rear edge of each of the side bracket sections (12a, 12b).</p> |
