| 摘要 |
PURPOSE:To prevent a spring from slipping off a fitting hole by providing a shaft rotating knob body, which has a spring which presses and holds a shaft inserted to the fitting hole, with a spring slipping stopper. CONSTITUTION:A core 6 is inserted to a spring 4, and the spring 4 is put into a mold in this state, and the core 6 is pulled out after insert molding of a knob body 2, thereby forming a projecting slipping stopper 5 in the entrance of a fitting hole 3 of the knob body 2. By this slipping stopper 5, the spring 4 pressing and holding a shaft 1 is shut in the fitting hole 3 and is preventing from slipping off the fitting hole 3. |
