| 主权项 |
1. A screening device for screening an aperture, such as a window, said screening device comprising
a tubular element with an axis of rotation and rotatable in relation to a shaft device, a screening body with one end secured to said tubular element and a free opposite end, which on rotation of said tubular element is adapted to move between a first position, in which the screening body is completely rolled up on said tubular element, and a second position, in which the screening body extends over said aperture in order to screen it, and a drive unit comprising a motor connected to said tubular element and said shaft device such as to provide said rotation of said tubular element in relation to said shaft device, and a control unit controlling operation of said motor, wherein said control unit comprises a printed circuit board with an electronic motion sensor, said printed circuit board being located in a position in relation to said axis of rotation of said tubular element and/or in relation to said shaft device wherein a weight element of said screening body is configured to provide a force which overcomes a force provided by a resilient member when said screening body hangs freely, and wherein the force provided by said resilient member is configured to overcome the force provided by said weight element when the force provided by said weight element is reduced by at least one of an obstacle and a thrust of wind, thereby providing a movement which said electronic motion sensor is configured to detect. |
