CRIMPED STRUCTURE, CRIMPING METHOD, AND ELECTRONIC DEVICE

摘要

Provided is a crimp structure in which an inner member and an outer member are joined to each other. The inner member includes an insertion portion (17) that has an outer circumferential surface (17S) having a shape of a columnar surface, and an annular groove (17U) provided in the outer circumferential surface (17S). The outer member includes a main body portion (34), and a cylindrical portion (33) that is continuous with the main body portion, and forms an opening (33K) into which the insertion portion (17) is inserted. The cylindrical portion (33) includes a first reduced-diameter portion (31) that is continuous with the main body portion via a first plastically-deformed portion (31C), and is formed so as to be located further inward in a radial direction than the main body portion due to plastic deformation of the first plastically-deformed portion, and a second reduced-diameter portion (32) that is continuous with the first reduced-diameter portion via a second plastically-deformed portion (32C), and is formed so as to be located further inward in the radial direction than the first reduced-diameter portion due to plastic deformation of the second plastically-deformed portion. At least a part of the second reduced-diameter portion (32) has entered the annular groove (17U). The crimp structure can suppress local deformation that occurs at the time of crimping.