Abstract: The invention relates to an electric plug connection (1) with a plug holder (7) and a pin (3), especially a round-section pin (3), in which the plug holder (7) has a holding compartment which is an axially compressible coil spring (2) having individual turns (5, 6) with the turns (5) largely having the same main diameter (dh). In order to reduce wear to the minimum even with frequent plug-in cycles and also not to increase the plugging force excessively, the invention proposes that the main diameter (dh) be larger than the outside diameter (d) of the pin (3) and that one or a few of the contact windings (6) have a smaller contact diameter than the main diameter (dh) and than the outside diameter (d) of the pin (3).

Abstract: The invention pertains to a filter bag (8) for a vacuum cleaner (1), with a retainer plate (16) made of a cardboard-paper material that can be attached to a dust bag (37), for example by gluing, and that has a sealable opening (19) for a suction tube (vacuum connector (18)) of a vacuum cleaner (1), where the opening (19) can be closed off with a separate closure piece (V) which can be moved from an open position to a closure position, being slid between two tiers (38, 40). For greater ease of handling the invention proposes that the closure piece (V) be practically fully enclosed in an outer contour of the retainer plate (16) in the open position and in the closure position and that the closure piece (V) lie exposed in a recess (57) of the uppermost tier (38) separate from the opening (19), the longitudinal extension of the recess (57) conforming to the closure piece (V).