| 摘要 |
PROBLEM TO BE SOLVED: To provide bead structure of a panel capable of enhancing face rigidity of the panel having a bent range between two planes. SOLUTION: This structure of beads is foamed on a panel 1 having two planes 11, 12 slightly inclined in relation to each other continued through a bent range 13 in order to enhance face rigidity. Three-dimensional curved surface beads 14 of square form having round corners or rectangular form having round corners are formed on the two planes 11, 12 so that the ends may be close to the bent range 13. A plurality of long thin three-dimensional curved surface beads 15 extending perpendicular to or parallel to the bent direction are formed in parallel in the bent range 13 at a suitable distance.
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