header plate of a header box and heat distributor for motor vehicles

摘要

The head plate (9) has passages (29, 30), which are parallely arranged along a longitudinal extension (19). A coolant tube is arranged through the passages. A reinforcing bead (41) is arranged between direct adjacent passages, where the head plate is curved perpendicular to the longitudinal extension with radius of 15 to 45 millimeters. Edges (32, 33) of the passages are arranged on a side of the head plate. A raising part of the reinforcing bead is arranged on another side of the head plate. The reinforcing bead is arranged at a distance from the edges surrounding the passages.