Patent ID: 7282824

Claim:
A press-fitting method for press-fitting an inserting member in a receiving member, comprising: forming an engaging hole in the receiving member; forming at least one groove in an inner periphery of the receiving member, the inner periphery created by the engaging hole; and press-fitting the inserting member in the engaging hole from one side of the receiving member while releasing an excess into the groove, wherein the forming step of the groove forms a plurality of grooves in a direction that the engaging hole is formed; the grooves are slanted in a circumferential direction; the inserting member is a base of a rectifying element and is used as an electrode; the receiving member is a heat radiation plate of the rectifying element; the rectifying element has a disk shape including a diameter which is larger than a thickness of the rectifying element so that the rectifying element comprises a flattened disk shape; and the grooves are predominantly disposed on the one side of the receiving member.