ASSEMBLY OF OPERATING KNOB AND CASE FOR SWITCHES, AND METHOD OF MANUFACTURING THE SAME

摘要

An assembly of an operating knob and a case therefor, wherein the size is reduced by minimizing the gap between the knob and the case by utilizing thermal shrinkage occurring in the molding step so as to reduce the size of the knob as compared with the conventional. The operating knob (7) and the case (1) for guiding the movement of the knob (7) are formed of a synthetic resin in two colors and then separated from each other after molding to provide the assembly (K). The above thermal shrinkage permits the formation of a guide clearance required between the knob (7) and the case (1) after assembling, and this guide clearance in turn permits moving of the knob (7).