| 摘要 |
PROBLEM TO BE SOLVED: To ensure high strength rigidity of a radiator mounting part without using a plate for reinforcement. SOLUTION: Overlapping regions 17 are formed on the right and left sides of an upper panel part 5 constituting a radiator core support panel 1 by dividing the upper panel part 5 into a plurality of parts to increase a plate thickness. The overlapping region 17 in which the plate thickness is increased is used as the radiator mounting part 21 to which a radiator 3 is attached.
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