| 摘要 |
PURPOSE:To rapidly perform initial fitting and also to easily perform refitting by tightening a tapping screw into the pit of a boss and refitting parts even after the parts are welded to the boss of a main body and detached therefrom to replace the same. CONSTITUTION:When a cabinet 10 is formed, a boss 11 is integrally formed. At the time, a large diameter part 12 is formed in the base side of the boss 11 and a step part 13 having small diameter is formed in the tip side thereof and also a pit 14 is formed in the central part. On the other hand, a fitting hole 16 into which the step part 13 having a small diameter is fitted is formed in the substrate 15 of the parts. When the substrate 15 is fitted to the cabinet 10, the fitting hole 16 is fitted to the step part 13 having small diameter and also the part projected from the fitting hole 16 is squeezed by a welding tip 17 to form a head part 18. Further, when the substrate 15 is detached, the head part 18 is cut off by a nipper 19 or the like. Furthermore, when the substrate 15 is refitted, a tapping screw 21 is tightened into the pit 14. Thereby initial fitting is rapidly performed and also refitting is easily performed. |
