Pianokey type switch capable of controlling double-purpose electrical appliance using one key

The utility model discloses a keyboard switch for a double-purpose electric appliance controlled by one key, which relates to the technical field of keyboard switches. The purpose of the utility model is to provide a keyboard switch for a double-purpose electric appliance controlled by one key, which comprises a No. 1 C-shaped dynamic touch sheet (3), a No. 2 C-shaped dynamic touch sheet (4), a No. 1 T-shaped static touch sliding sheet (5), a No. 2 T-shaped static touch sliding sheet (6), a No. 1 static touch sheet (7) and a No. 2 static touch sheet (8), wherein the two T-shaped static touch sliding sheets are respectively fixed on the front side wall and the rear side wall of a base (1) in the shape of a long groove, the two static touch sheets are respectively fixed on the left end and the right end which are at the rear side of the bottom of a groove in the base (1) in the shape of a long groove, the two C-shaped dynamic touch sheets are respectively fixed on the left end and the right end which are at the rear side of a keyboard cover plate (2), C-shaped openings of the two C-shaped dynamic touch sheets are in an inward direction, and the outer sides of the two C-shaped dynamic touch sheets are respectively contacted with the No. 1 T-shaped static touch sliding sheet (5). The structure is simple, the operation is convenient, simple structure, convenient operation and low cost, and can greatly reduce the use quantity of the keyboard switch; the installing cost and the operating cost are reduced, and simultaneously the living and working environment can be tidier and more beautiful.