Long jityu dineol front and extending junction of Long jityu dineol

摘要

The present invention relates to the coupling structure of the front long jityu of the lower body frame dineol (front longitutinal) (10) and extending long jityu dineol 20, the front face 21 of the extension Long jityu dineol 20, the thickness increases the by matching the rear end face 11 of the front long jityu dineol (10) and being configured by laser welding, increases the overall stiffness by the thickness increase and the laser welding method of extending long jityu dineol are bonded is easy, and the product this has the effect and productivity is improved.