| 摘要 |
PURPOSE: To reliably exhibit the control function without damaging a driving disc caused by generation of backlash between an insert member and a driving disc, by easily facilitating forming of the driving disc, decreasing the weight, and completely preventing the separation and the deformation on the inner end peripheral edge of a disc main body. CONSTITUTION: A driving disc 7 provided on the tip of a rotary shaft body 1 for forming a driving side is fixed on the base part of a metallic insert member 7" for forming the base part, and the inner end peripheral edge of a disc-like disc main body 7' made of resin is embedded and casted on an annular recessed groove part provided on the wall thickness inner part along the vicinity of the root of th insert member. |
