US Patent 7832304 Knob structure of a parking brake apparatus

A knob structure for parking brake apparatus that can prevent a sink mark or a weld mark from being produced at the time of molding, and allows an inexpensive resin material with a good moldability to be adopted. The knob structure includes a rod that is movably disposed on the vehicle body side, and a knob main body that is connected to the nose end side of the rod, wherein the knob main body is made up of a core part that is previously assembled to the nose end side of said rod, and a surface layer part that coats the surface of the core part after assembly with a substantially uniform coating thickness.