Patent ID: 7582841
Filing Date: 2009-09-01
Classification: D06F

Abstract:
1. A control button of a control panel for manipulating a rotary switch, the control button comprising: a button securing part, including a button operating part, including an elastic member having one end mounted between the operating body and the operating portion, and the other end mounted on the button securing part; and a cylindrical button adjusting part provided on the control panel and having the operating body press-fitted into the button adjusting part, wherein the guide member comprises: a guide protruding piece formed at one side of an outer peripheral surface of the operating portion and having a guide-piece guiding portion defined therein; a guide-piece controlling protrusion formed on the guide-piece guiding portion which divides the guide-piece guiding portion, the guide-piece controlling protrusion including a guide groove which faces the operating body, the guide groove having a V-shape such that the guide groove comprises a first slope and a second slope; and a guide-piece having a moving end and a fixed end, the moving end capable of moving along the guide-piece guiding portion to control operation of the button operating part, and the fixed end secured to the button securing part, and wherein the guide-piece controlling protrusion has a corner facing the guide-piece and biased to one side of an imaginary straight line extending along a longitudinal axis of the guide-piece, the guide groove is formed on the imaginary straight line, and the elastic member is a cylindrical coil-spring having a diameter slightly smaller than that of the cylindrical button adjusting part.