Patent ID: 8251435
Filing Date: 2012-08-28
Classification: B29C,B29L,B62D,Y02T

Abstract:
1. A method of manufacturing a spoiler, the method comprising: providing a synthetic resin upper member and a synthetic resin lower member, wherein one of the upper member and the lower member comprises a main welding rib and an auxiliary welding rib which are protruded toward the other of the upper member and the lower member, the auxiliary welding rib is arranged to extend along a direction perpendicular to a direction along which the main welding rib extends, a height of the auxiliary welding rib is less than a height of the main welding rib, and the auxiliary welding rib is spaced apart from the main welding rib; and joining the upper member and the lower member by vibration welding, during which a vibration is applied in the direction in which the main welding rib extends, wherein the joining comprises: joining the main welding rib to the other of the upper member and the lower member; and subsequently joining the auxiliary welding rib to the other of the upper member and the lower member.