Filter bag for a vacuum cleaner

A filter bag for a vacuum cleaner having a connector tube and two holding grooves arranged on either side of the connector tube, comprising a connection member, which possesses an essentially tabular main body adapted to have side edge parts thereof slid into the holding grooves and manufactured of stiff board material, such main body having a fitting opening for fitting the connection member on the connector tube, and a closing slide being guided by the connection member, such closing slide having a passage opening and being able to be drawn by means of a handle part, which is exposed at a front transverse edge part of the main body, of the closing slide out of an open position, in which the passage opening clears the fitting opening into a closed position, in which the fitting opening is closed wherein at the two lateral edge parts of the main body a respective holding rail is arranged for insertion into the holding groove of the vacuum cleaner during use, which holding rail at a front end thereof adjacent to the handle part extends from a front end facing the handle part as far as its rail attachment points nearer a rear transverse edge part, opposite to the handle part, of the main body in relation to the fitting opening the holding rails being connected permanently with the main body at the rail attachment point but are otherwise separated or separable therefrom so that in the position of use the main body part extending from the two rail attachment points between the same and as far as the end adjacent to the handle part is able to be pivoted out of the plane defined by the holding rails held on the vacuum cleaner so far that the fitting opening comes clear of the connector tube and said closing slide is able to be pulled into its closed position.