Method for manufacturing swaged structure and swaged structure

A method for manufacturing a swaged structure, wherein the swaged structure includes a first member and a second member, the first member includes an end portion having a folded shape, the end portion of the first member includes a plate part and a groove, the groove includes a first inner surface and a second inner surface opposed to the first inner surface, the second inner surface is located at a position further from an edge of the first member than the first inner surface, the plate part includes the edge of the end portion of the first member and the first inner surface, the second member includes an end portion, the end portion of the second member includes an edge, a first outer surface configured to be opposed to the first inner surface, and a second outer surface configured to be opposed to the second inner surface, the groove extends around the edge, the first outer surface, and the second outer surface of the second member, the groove includes an engaging portion projecting from the first inner surface, the second inner surface is a flat surface, the first outer surface of the end portion of the second member includes an engaged portion that is recessed to engage with the engaging portion, and the second outer surface of the end portion of the second member is a flat surface,

• the method comprising:
• preparing the first member including the plate part and the groove, the plate part defining a width of an opening of the groove;
• after the preparing of the first member, inserting the end portion of the second member into the groove so that the second inner surface of the groove of the first member contacts the second outer surface of the second member;
• and
• after the inserting of the second member, pressing the plate part in a direction narrowing the width of the opening of the groove to move the engaging portion of the first member toward the engaged portion of the second member thereby press-fitting the engaging portion with the engaged portion.