Patent ID: 7836791

Claim:
A knob, comprising: an approximately cylindrical knob body having a large opening and a small opening provided at both sides in an axial direction; a cap attached to the small opening; and a metal-plated operating member attached to a side face of the knob body, wherein the knob body has a pair of guiding protrusions that define a slit in the axial direction therebetween, and a pair of restricting protrusions that define a short slit that is shorter in the axial length than the slit, the operating member includes a rib formed integrally therewith and inserted into the slit along the axial direction, a flange coupled to an edge of the rib approximately perpendicularly to the rib, the flange being fixed to the knob body due to restriction of an axial position of the operating member by the cap attached to the small opening, a tab that abuts on an inner wall of the knob body, and a joining rib that joins the flange and the tab, the flange is wider in width than the slit, and engaged by the guiding protrusions according to insertion of the rib into the slit at a time of insertion of the operating member into the knob body in the axial direction, and the joining rib and a portion defining an end of the short slit abut against each other to restrict the axial position of the operating member.