Binding Structure between Tank and Header of Automotive Radiator

Abstract

The invention involves positive contact to create a binding structure between tank and header of an automotive radiator, specifically the upper tank ( 3 ), with the upper header ( 4 ), and the bottom tank ( 9 ) with the bottom header ( 11 ). There is a first metal hem 3.1 of downward extension from the lower edge of the upper tank ( 3 ), corresponding to the first metal hem there is a second metal hem 4.1 of vertically downward extension from the outer edge of the upper header ( 4 ). Said first hem tightly encloses the second hem thereby allowing a complete and positive bound by brazing. There is a third metal Hem 9.1 of upward extension from the upper edge of the bottom tank ( 9 ), corresponding to the third metal hem there is a fourth metal hem 11.1 of vertically upward extension from the outer edge of the bottom header ( 11 ). Said third hem tightly encloses the said fourth hem thereby allowing a complete and positive bound by brazing. This structure of tank enclosing header ensures the integrated structure of the radiator and the firm binding between tank and header.

1 . A binding structure between tank and header of an automotive radiator comprising:
 an upper tank, an upper header, a bottom tank and a bottom header);   a first metal hem defined by downward extension of the lower edge of the upper tank, corresponding to the first hem a second metal hem defined by downward extension from the outer edge of the upper header, the first metal hem tightly encloses the second metal hem mechanically and then the first hem and second hem are completely bonded by brazing;   a third metal hem defined by upward extension of the upper edge of the bottom tank, corresponding to the third hem a fourth hem defined by upward extension of the outer edge of the bottom header, the third hem tightly encloses the fourth hem mechanically and then the third hem and fourth hem are completely bonded by brazing.