An apparatus for providing a switch mechanism comprises a housing and a pressure sensitive device mounted to the housing. An actuator is moveably connected to the housing to enable the actuator to move along an axis towards and away from the pressure sensitive device. A resilient member has a first end connected to the actuator and a second end connected to the pressure sensitive device.

A device and a method for producing haptic feedback are disclosed. In an embodiment a device includes at least one piezoelectric actuator having a plurality of piezoelectric layers and internal electrodes arranged therebetween, a first amplification element and a second amplification element, wherein the piezoelectric actuator is arranged between the amplification elements, wherein the piezoelectric actuator is configured to change its extension in a first direction upon application of an electrical voltage, and wherein the amplification elements are configured to deform as a result of the change in the extension of the piezoelectric actuator such that a subregion of a respective amplification element is moved relative to the piezoelectric actuator in a second direction, which is perpendicular to the first direction and a driver circuit configured to apply the electrical voltage to the piezoelectric actuator such that the amplification elements are deformed thereby producing the haptic feedback against an object pressing on the device, the haptic feedback imitating a jump in force.

An apparatus for providing a switch mechanism comprises a housing and a pressure sensitive device mounted to the housing. An actuator is moveably connected to the housing to enable the actuator to move along an axis towards and away from the pressure sensitive device. A resilient member has a first end connected to the actuator and a second end connected to the pressure sensitive device.

An operating control unit for an electrical appliance with an operating field is mounted on an underside of the operating field. The operating control unit includes a frame body, a flat component carrier being mounted to the frame body from behind and having piezo-active sensor elements, and a back support mounted to a back side of the frame body and enclosing the component carrier. The operating control unit has after pre-assembly two different assembly states. In a pre-mount state the back support is fixed to the frame body enclosing the component support, and some locking means of the frame body are formed as pre-mount locking means and are holding the back support against disassembly. In a final-assembly state the back support is pressed against the frame body with less distance between the two, and final-assembly locking means of the frame body are holding the back support in a closer position than the pre-mount locking means.