| 摘要 |
PROBLEM TO BE SOLVED: To provide a balance weight wherein an iron weight and a metal fixture are firmly connected.SOLUTION: This balance weight is connected by caulking the head of a fitting protrusion in the state that the fitting protrusion (13) of the iron weight (1) is inserted into the fitting hole (23) of the metal fixture (2), and the opening of the fitting hole on the caulking side is larger than the opening on the opposite surface side. Thus, the fitting between the fitting protrusion and the fitting hole is secured, achieving the balance weight wherein the iron weight and the metal fixture are firmly connected. |
