Patent ID: 6940031

Claim:
A switching device comprising: a lower case for retaining a printed-circuit board; an upper case fitting the lower case, for catching the printed-circuit board between inside walls thereof; an operation button projecting from an opening part provided in the upper case; a link mechanism having a first arm and a second arm, wherein both arms cross each other for retaining the operation button, wherein the operation button is movable vertically; a push-button switch fixed on the printed-circuit board under the operation button; an elastic body provided between the push-button switch and the operation button, wherein the elastic body biases the operation button in the direction away from the push-button switch; an actuator connected to the first arm, wherein the actuator is movable in parallel with the printed-circuit board; connection terminals provided on the printed-circuit board; and a wire made of a shape-memory alloy, wherein both ends thereof are fixed to the connection terminals, and wherein an intermediate part thereof is retained by the actuator.