Bonding structure for surge tank, surge tank and intake manifold

摘要

An object of the present invention is to provide a bonding structure for a surge tank, a surge tank and an intake manifold, that are not affected by air leakage as a result of having sufficient strength to withstand the application of substantial stress.;The bonding structure for a surge tank that is formed by using vibration welding to bond together respective end surfaces of at least two separately formed surge tank segments (1, 2). A first one of the surge tank segments (1) includes a connection-use protrusion (12) that forms a periphery of the end surface thereof, and a second one of the surge tank segments (2) includes a pair of grooves (23, 24) on the end surface thereof, and a connection-use protruding receiving surface portion (22) which forms a periphery of the end surface and which is disposed between the pair of grooves. The connection-use protrusion (12) and the connection-use protruding receiving surface portion (22) are positioned so as to be offset from respective center points of the end surfaces toward respective inside surface sides thereof.