Operating control unit for an electrical appliance and electrical appliance

An operating control unit for an electrical appliance with an operating field, wherein said operating control unit is formed to be mounted on an underside of said operating field, wherein said operating control unit comprises:

• a frame body with a frame topside to be mounted to said underside of said operating field, wherein said frame body comprises locking means protruding from said frame body, and wherein said frame body comprises a frame opening;
• a flat component carrier mounted to said frame body from behind, wherein said component carrier comprises piezo-active sensor elements provided on a topside of said component carrier facing said frame body and said underside of said operating field;
• and
• a back support mounted to a back side of said frame body and enclosing said component carrier, wherein said back support is fixed to said frame body via locking means of said frame body interlocking with counter locking means on said back support,
• wherein said operating control unit comprises after pre-assembly two different assembly states,
• wherein a first state is a pre-mount state and a second state is a final-assembly state,
• wherein in said pre-mount state said back support is fixed to said frame body enclosing said component support, and some of said locking means of said frame body are formed as pre-mount locking means and are holding said back support against disassembly, and
• wherein in said final-assembly state said back support is pressed closer to said frame body with less distance between the two than in said pre-mount state, and final-assembly locking means of said frame body are provided for holding said back support in a closer position than said pre-mount locking means.