Suction knocking apparatus for use as attachment device for electrically operated household-vacuum cleaner, has knocking element with two dimensional-elements whose dimension corresponds to more than sixty percent of dimension of mouth

摘要

The apparatus (1) has a knocking element (13), and a suction mouth (8) connected with a suction pipe (2), where the suction element is arranged in an inner side of the suction mouth. The knocking element is provided with two dimensional-elements (14), where dimension of the two-dimensional elements corresponds to more than 60 percent of the dimension of the suction mouth in a breadth direction and in a longitudinal direction during central suction. The knocking element is connected with vertical wall sections of a housing section in a sealing manner.