Control apparatus for car equipment having acoustic touchpad and control buttons

摘要

The device has a tactile plate (3) with an active surface (4) having sensors e.g. accelerometers, connected to an electronic processing unit (7) to locate the source of an acoustic wave to which the surface zones (24, 25) are subjected and to control motor vehicle equipments. A button (8) controls and/or operates the equipment and has a rotating knurled knob (9). The knob has teeth (12) acting, on knob rotation, on a head (13) of a balance beam (14) to tilt the beam from a position spaced from beam arms (16a, 16b) to a position of percussion on the surface to generate the wave propagation.