| 摘要 |
PROBLEM TO BE SOLVED: To provide a reliable structure of a reinforcement member at a brazing part of an end part of a flat tube 3 and a tube insertion hole 1 of a header plate 2 with the small number of components, easy to be assembled, and hard to fall by vibration during brazing, etc. SOLUTION: A plurality of U-shaped elastic claw parts 4 are arranged in parallel in the parallel pitch of the flat tube 3 outside both end parts of a reinforcement plate 6, and these both end parts are integrally connected by one or more bridge parts 5. The respective elastic claw parts 4 of the reinforcement plate 6 are fitted pressingly to an opening of the flat tube 3 for integrally brazing/fixing outer surfaces of the elastic claw parts 4 and end part inner faces on the long axis sides of the opening of the flat tube 3. COPYRIGHT: (C)2009,JPO&INPIT
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