Lap laser welded joint, manufacturing method of lap laser welded joint and skeletal parts for automobiles

摘要

An object of the present invention is to provide a lap laser welded joint, a method for manufacturing a lap laser welded joint, and a skeletal component for automobiles having the lap laser welded joint. The present invention is an overlap laser welded joint having a welding portion joined by overlap laser welding to an overlapping portion in which a plurality of steel sheets are overlapped with each other, wherein the welding portion includes a main welding portion penetrating the steel plates of the overlapping portion, and a crater formed at one end of the main welding portion It consists of a final welding part having a, and the welding part satisfies the formulas (1) to (4). L≥15.0 … (1) 10.0≥L2≥2l c ... (2) t1≥2d c ... (3) w c > d c . (4)