Patent ID: 8657327

Claim:
A vehicle interior panel comprising: an inner case including at least one flap portion defining an opening portion for deployment of an airbag and formed together with a hinge portion in the opening portion; and an outer panel covering a front surface of the inner case and including at least one door portion to be joined to the flap portion, the outer panel being joined to the inner case using vibration welding; wherein one of joint surfaces between the flap portion and the door portion has a plurality of first welding ribs disposed substantially parallel to the hinge portion, a plurality of second welding ribs disposed so as to form a plurality of grids together with the first welding ribs, and a third welding rib formed in a frame shape thereon along an outer periphery of the flap portion; wherein the first welding ribs include first communication grooves each allowing adjacent grids to communicate with each other, the second welding ribs include second communication grooves each allowing adjacent grids to communicate with each other, and the third welding rib includes sides perpendicular to the hinge portion and further includes third communication grooves formed in the sides; wherein the second communication grooves are formed so as not to be successively aligned in a direction perpendicular to the second welding ribs; and wherein the first to third communication grooves form an exhaust channel allowing air in the grids to be discharged outside during vibration welding.