| 摘要 |
The present invention discloses an independent button for a keypad device. The independent button includes an elastic keypad placed on the top of a switch contact point of a control board and moving up and down on a front cover in order to selectively connect the switch contact point to a rear case, a knob plate supporting the keypad, and a knob fixed with a top surface of the plate and protruding from the front cover. The elastic keypad includes a ring type base part touching surroundings of the switch contact point, an operating part fixed with the plate and in which a pressing protrusion connecting the switch contact point with the bottom center is formed, and an elasticity connecting part connecting the operating part with the ring type base part so that the operating part elastically supports the base part. The degree of freedom for button arrangement is very high because an influence like a noise occurs to an adjacent button when the button is operated as the button is composed in an independent type and when a new switch needs to be added, new arrangement can be performed at a relatively low cost. In addition, LED light for displaying an operation state of the button is widely spread, thereby the operation state is easily and clearly recognized. |
