| 摘要 |
PROBLEM TO BE SOLVED: To suppress a decline in durability of a radiator 1 itself. SOLUTION: In the radiator 1, a side wall part 52a (52b) of a core plate 50a has a groove part 520a (520b) serving as a bending base point. Due to this structure, it is unnecessary to make the strength of a bending part 521 of the core plate 50a fragile. Thus, even when the internal pressure in a tank inner space 50c of a header tank 5a (5b) is increased so as to apply pressure in a direction intersecting with a tube longitudinal direction to a tank main body 50b and so as to apply stress from an end part corner part 600a of the tank main body 50b to the bending part 521 of the core plate 50a indicated by the arrow Yb, decline in the strength of the bending part 521 can be suppressed. COPYRIGHT: (C)2009,JPO&INPIT
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