| 摘要 |
PROBLEM TO BE SOLVED: To provide an assembled structure which can secure rigidity of a metal plate material on a periphery of a cylindrical part in spite of a thin metal plate material, and when fastening a male screw member from the fastening target member side, can prevent the cylindrical part from being easily drawn up to an insertion hole of the fastening target member accompanying the fastening of the male screw member.SOLUTION: A self-tapping screw 6 is inserted into a round hole 5b and screwed into a female screw of a burring processed part 2 to fix a fastening target member 5 on a fastening member 1. The burring processed part 2 is formed by cylindrically standing a part of a metal plate material by burring processing. Beads 3a, 3b, 3c are formed by plastically deforming a plurality of positions surrounding the burring processed part 2 of the metal plate material to the same side as the burring processed part 2 by embossing to raise the positions like ribs. Three or four beads 3a, 3b, 3c having the same shape are arranged on positions of the same distance around the burring processed part 2 at the same angle interval. |
