| 摘要 |
A seat frame (1) includes a projecting portion (511) formed on a surface of a recliner (50) to face a reinforcement plate (70), the projecting portion (511) having a cross sectional with a portion and a protruded portion in a rotational direction of the recliner (50), the reinforcement plate (70) including a first through-note (71) for fitting the projecting portion (511), the upward-downward direction frame (21) including a second through-hole (211) larger than the first through-hole (71) which extends within the second through-hole (211) when the upward-downward direction frame (21) and the reinforcement plate (70) are overlaid, and a three-member welding portion (D) formed by a periphery (R) of the projecting portion (511), a periphery (H) of the first through-hole (71), and a periphery (S) of the second through-hole (211) wherein the recliner (50), the reinforcement plate (70) and the upward-downward direction frame (21) are welded with the projecting portion (511) of the recliner (50) fitting to the first through-hole (71) of the reinforcement plate (70) while the reinforcement plate (70) and the upward-downward direction frame (21) are overlaid. |
