Water stop mounting structure of bolt to plate-like metal member

Abstract

A water stop mounting structure of a bolt to a plate-like metal member where a caulking bolt is used in which a screwless portion between an upper end of a male screw of the caulking bolt and a bearing surface of a head portion of the bolt thicker than an effective diameter of the male screw. Inserting this caulking bolt into the pilot hole of the plate-like metal member and caulking, metal of a circumferential edge portion of the pilot hole is plastically deformed toward the screwless portion to be brought in close contact with the screwless portion, and water is stopped. Applying sealant to a bearing surface of the caulking bolt produces a structure in which the sealant flows between the circumferential edge portion of the pilot hole of the plate-like metal member and the bolt at the time of being press-fitted and water is stopped.

Dependencies are inferred from the claim text.