Patent ID: 6593909
Filing Date: 2003-07-15
Classification: G05G,G06F,H01H

Abstract:
A direction-control switch module adapted to be applied in electronic products for control of displacement of a screen cursor, the switch module comprising:an upper cover and a base, wherein a cross-channel is formed in an inner wall of the upper cover and the base respectively and oppositely; a hub and a plurality of terminals of the cross-channel in the base are connected with a common pin or connecting pins; an actuation portion with a center hole is disposed in the upper cover and in an axial line defined by centers of the upper cover and the base; a control set comprising a pushbutton having an axial hole located in the axial line being disposed between the upper cover and the base; a shaft located in the axial line penetrating the axial hole of the pushbutton and extending through the center hole; a plurality of resilient members disposed between the pushbutton and the common pin and between the pushbutton and the connecting pins; a spherical portion formed on the pushbutton for operation in the actuation portion; and a plurality of depression pieces each having a protruding portion individually being formed at positions corresponding to the terminals of the cross-channel by extending the circumference of the spherical portion outwardly, for output of a distinct direction signal by applying force onto the shaft to enable the spherical portion to act in any specified direction in the actuation portion, and to depress one of the depression pieces downwards to have the protruding portion in turn depressed against a resilient member for contact with one of the connecting pins or the common pin to thereby move a screen cursor to a specified position and provide a direction-control switch module, and a reinforcement piece detachable from the pushbutton adapted to reinforce the depression pieces and located immediately below the pushbutton, for enhancing rigidity.