Control device for an electrical appliance

摘要

A control device is provided that includes a plate and a control unit. The control unit has a rotary unit designed as a transmitter unit and a receiver unit. The transmitter unit has a top surface and a bottom side, wherein a base is formed on the bottom side in a center region and a first magnetizable element or a first magnet for positioning the transmitter unit at a predefined position over the receiver unit is arranged in the center region. In a rest position the transmitter unit rests with the base on the plate and the axis of rotation extends essentially parallel to the normal of the plate, or the transmitter unit is tilted into an operating position such that the base rests only partially on the plate and the axis of rotation is tilted relative to the normal of the plate.

主权项

1. A control device comprising:
a plate; and a control unit having a rotary unit with an axis of rotation configured as a transmitter unit and having a receiver unit, the transmitter unit being arranged above the plate and the receiver unit being arranged below the plate, wherein the transmitter unit has a top surface and a bottom side, wherein a base is formed on the bottom side in a center region and a first magnetizable element or a first magnet for positioning the transmitter unit at a predefined position over the receiver unit is arranged in the center region, wherein, in a rest position, the transmitter unit rests with the base on the plate and the axis of rotation extends essentially parallel to a normal of the plate or wherein the transmitter unit is tilted into an operating position such that the base rests only partially on the plate and the axis of rotation is tilted relative to the normal of the plate, and a restoring force for assuming the rest position acts on the transmitter unit by a second magnet or a second magnetizable element, wherein the receiver unit has a center region and has a first type of sensor in an annular outer region spaced apart from the center region, wherein the receiver unit has the second magnet or the second magnetizable element, wherein a single first ring magnet is located in an outer region of the transmitter unit, and has a continuous inner circumference surface, and wherein the continuous inner circumference surface of the first ring magnet surrounds the center region of the transmitter unit and is spaced apart from the center region such that through a rotation about the axis of rotation, the transmitter unit is adapted to continue to rotate with substantially a constant force.