Capacitive switching device

摘要

A capacitive switching device having a pair of stationary electrodes, a movable electrode disposed capacitively relative to the stationary electrodes, and an actuator carrying the movable electrode and including a resilient member biasing the actuator away from the stationary electrodes. The movable electrode comprises a sponge member having non-porous layers on opposite sides thereof, and a resilient conductive layer adhering to one of the non-porous layers. The other non-porous layer is secured to the actuator such that the resilient conductive layer faces the stationary electrodes. A process of manufacturing the device is also disclosed. The process comprises producing the sponge member, securing a release paper with an adhesive to non-porous layers of the sponge member, removing the release paper from the non-porous layers with the adhesive left thereon, securing a resilient conductive layer to one of the non-porous layers with the adhesive left, and securing the sponge member to the actuator with the adhesive left on the other non-porous layer so that the conductive layer faces the stationary electrodes.