| 摘要 |
PROBLEM TO BE SOLVED: To provide an embedded pin which is small in processing man-hours, and excellent in fastening rigidity.SOLUTION: In an embedded pin 10 which is inserted into a pin insertion hole 21 formed at the other member 20, and has a circular columnar insertion part 11 composed of a hard metal, the insertion part 11 has a bottomed expansion hole 13 formed at a center in an axial line direction, an expansion cylinder part 12 is arranged around the expansion hole 13, a circular columnar expansion piece 30 contacting with a bottom face 14 of the expansion hole 13, and composed of a light metal is arranged, a diameter of the expansion piece 30 is formed slightly smaller than a diameter of the expansion hole 13, and the expansion piece 30 and the expansion cylinder part 12 are expanded in a radial direction by the compression of the expansion piece 30 to the axial line direction, and fixed into the pin insertion hole 21.SELECTED DRAWING: Figure 1 |
