| 摘要 |
PROBLEM TO BE SOLVED: To improve rigidity with respect to a flexure load acting to a T-shaped joint part.SOLUTION: A joint structure is configured so that: a second member 20 is jointed to a first member 10, and they form a T-shape; and a first upper face 11a and a flange 25 are jointed at joint parts 30a, 30b. First curvature ribs 15a, 16a are disposed on a rear side face of the first upper face 11a, separate from the second member 20 at corner parts 22b, 23b as origins, then curve in a first direction and extend in the first direction. Second curvature ribs 15b, 16b face the first curvature ribs 15a, 16a. The first curvature ribs 15a, 16b and the second curvature ribs 15b, 16b cross at two points, and define surrounding areas 15c, 16c. The surrounding areas 15c, 16c are overlapped to the joint areas of the joint parts 30a, 30b.SELECTED DRAWING: Figure 4 |
