| 摘要 |
A caulking method for joining a first plate having a tapered hole and a hollow cylindrical caulking portion extending from a periphery of the tapered hole, and a second plate having a hole, the method including inserting the caulking portion of the first plate through the hole of the second plate to project a tip end portion of the caulking portion beyond the hole and overlay the second plate on the first plate, and folding back the tip end portion of the caulking portion over a periphery of the hole of the second plate on one side surface thereof, while pressing against a beveled surface defining the tapered hole so as to prevent a material of the caulking portion from flowing toward the other side surface of the first plate along the periphery of the tapered hole. |
