A method for fastening plate-like members and fastening structure for plate-like members

摘要

A method for fastening plate-like members, including the steps of: forming a convex part (14) on a surface of one plate-like member (12); forming a through-hole (16) which has a larger diameter than a diameter of the convex part (14) in another plate-like members (11); after inserting the convex part (14) through the through-hole (16), pressing a top surface of the convex part (14) with a first pressurizing tool (17) which includes at least one pointed end portion (18) having a smaller contour than a contour of the convex part (14) to make a cut matching the at least one pointed end portion (18) of the first pressurizing tool (17) at the top surface of the convex part (14); further pressing to expand an outer portion of the cut (14A) outwardly by means of a second pressurizing tool (19); and fastening the two plate-like members (11,12) mutually by sandwiching in the vicinity of the through-hole (16) of the other plate-like member (11) by means of an expanded portion (14A') formed on the convex part (14) and the surface of the one plate-like member (12).