Filter bag and closure flap for a filter bag

Abstract

The invention relates to a filter bag (100), in particular for a vacuum cleaner (200), comprising a filter material (10) for receiving vacuumed material (1) and a holding plate (20) for arranging on a holding socket (220) on the vacuum cleaner side. Furthermore, the invention also comprises a closure flap (30) for a filter bag (100) according to the invention.

Description

[0001] The invention relates to a filter bag having the features of the independent patent claim relating to a filter bag, a closure flap having the features of the independent patent claim relating to a closure flap, a vacuum cleaner having the features of the independent patent claim relating to a vacuum cleaner and a system having the features of the independent system claim.

[0002] Filter bags for vacuum cleaners are known which can be designed to hold vacuumed material, for example in an interior space of the filter bag. A filter bag can be arranged in a vacuum cleaner, in particular between a vacuum cleaner tube (and / or vacuum cleaner hose) and a suction fan. This allows the vacuum cleaner to suck in vacuumed material, e.g. sand, dust, stones and the like, through the suction fan via the vacuum cleaner tube (or vacuum cleaner hose) and transport it into the interior of the filter bag. The vacuumed material can preferably then be arranged in the filter bag, in particular even after the vacuum cleaner has been switched off, and preferably remain there until disposal.

[0003] However, the state of the art has disadvantages. For example, known filter bags or closure flaps may have a tightness that could be improved. Even a seal between the filter bag and a vacuum cleaner-side retaining piece may be inadequate. The (unwanted) removal of vacuumed material from the filter bag, for example, during or after switching off the vacuum cleaner, cannot be prevented or can only be prevented inadequately. In particular, vacuumed material may become jammed in the filter bag, the closure flap, and / or the vacuum cleaner-side retaining piece. Furthermore, the service life, reusability, (tensile) strength, and / or tear resistance may be inadequate. The shape may be inadequate, for example, not sufficiently stable, rigid, and / or adaptable. Furthermore, the complexity may be high, for example, due to the use of many and / or complex components.This can lead to increased wear and / or a (at least partial and / or premature) loss of functionality, for example due to the number and / or type of components. For example, springs for closing a filter bag or closing flap can jam (e.g. due to suction material), become wedged and / or wear out (e.g. rust). Furthermore, the manufacturing effort, the costs and / or the ease of use (also for the user) may need improvement. In addition, environmental friendliness, particularly due to complex or impossible recycling, and / or safety may need improvement. In addition, the noise generation and / or acoustic vibration tendency may be too high and / or unfavorable.

[0004] It is therefore an object of the present invention to at least partially overcome at least one of the disadvantages described above. In particular, the object of the invention is to provide an improved filter bag and / or an improved closure lid, which in particular optimizes tightness, costs, service life, strength, environmental friendliness, and / or safety. Furthermore, it can be an advantageous object to prevent or reduce wear, complexity, manufacturing effort, and / or jamming of suction material.

[0005] The above object is achieved by a filter bag with the features of the independent patent claim relating to a filter bag, a closure flap with the features of the independent patent claim relating to a closure flap, a vacuum cleaner with the features of the independent patent claim relating to a vacuum cleaner and a system with the features of the independent system claim. Further features and details of the invention emerge from the subclaims, the description and the drawings. Features and details described in connection with the filter bag according to the invention naturally also apply in connection with the closure flap according to the invention and / or in connection with the vacuum cleaner according to the invention and / or in connection with the system according to the invention and vice versa, so that with regard to the disclosure of the individual aspects of the invention, reference is or can always be made reciprocal.In particular, advantages described in the context of the first, second, third and / or fourth aspect also apply to the first, second, third and / or fourth aspect.

[0006] The above object is achieved according to a first aspect by a filter bag, in particular for a vacuum cleaner, comprising a filter material for receiving suction material and a holding plate for arranging on a holding nozzle on the vacuum cleaner side.

[0007] The filter bag, in particular the filter material, can be designed to hold suction material that has been sucked in, for example, by a vacuum cleaner. The filter material can be bag-like and / or sack-like. In other words, the filter material can have an opening and otherwise be in the form of a bag or sack. The filter material can have and / or define an interior space into which the suction material can preferably be held. The filter material is preferably, at least partially, permeable to air, for example perforated. The filter material can, for example, comprise a plastic, paper and / or fleece.

[0008] The filter bag can preferably be arranged in or on a vacuum cleaner, preferably on a holding nozzle on the vacuum cleaner (see below). In an operating state, the filter bag can be arranged or installed in or on the vacuum cleaner. In particular, the filter bag can be designed to receive and / or (at least temporarily) bind vacuumed material sucked in by the vacuum cleaner, particularly after (successful) installation of the filter bag on or in the vacuum cleaner, preferably also during or after the vacuum cleaner is switched off. It can be provided that a (reversibly detachable) cover of the vacuum cleaner closes off a vacuum cleaner interior in which the filter bag can be arranged, in particular installed. The cover can (subsequently) close the vacuum cleaner so that the filter bag is protected in the vacuum cleaner interior (e.g. from external forces).

[0009] The filter bag can be (at least partially) replaceable, recyclable, and / or biodegradable. This can advantageously improve environmental friendliness. For example, the filter material, the retaining plate, the nozzle, and / or the closure flap can be designed to be replaceable, recyclable, and / or biodegradable.

[0010] In this case, the material to be vacuumed can be sucked in, in particular along a suction direction. A suction direction can therefore (essentially) correspond to the (averaged) movement of the air, which moves in particular through the vacuum cleaner, a vacuum cleaner-side retaining nozzle, the retaining plate, a through-opening of the retaining plate, the nozzle (see below), the collar, and / or the filter bag. Within the scope of the invention, a reference to the suction direction can refer to the suction direction (essentially) at the level of the relevant feature or component. Thus, the suction direction can be (exclusively) linear, for example, when the material to be vacuumed is moved: along or through a straight (e.g. tubular) suction pipe, along or through a straight (e.g. tubular) vacuum cleaner-side holding nozzle, through a holding plate, in particular through a (straight) through-opening of the holding plate, along or through a straight (e.g. tubular) nozzle, along or through a filter bag, and / or straight or linearly in the direction of a suction fan.

[0011] It can also be provided that the suction direction is curved (at least in sections), for example if the nozzle is designed as an angled pipe.

[0012] The retaining plate can be flat, planar, and / or level, for example, like a (flat) cuboid or a disc. The retaining plate can be arranged (essentially) perpendicular to a suction direction, particularly when the filter bag is arranged in a vacuum cleaner. Preferably, the retaining plate can be configured to enable arrangement, particularly reversibly detachable fastening, to a retaining piece on the vacuum cleaner side. This can facilitate maintenance, particularly replacement of the filter bag (e.g., by the user).

[0013] The holding plate can have a through-opening which can be configured to allow air and / or suction material to pass through, in particular to allow these to flow into the filter bag. The through-opening can be flowed through in a suction direction. The through-opening can be substantially round and / or arranged centrally in the holding plate. The through-opening can, in particular in an operating state, be arranged substantially flush and / or aligned with a holding nozzle on the vacuum cleaner side, a vacuum cleaner tube and / or a vacuum cleaner hose of the vacuum cleaner. In other words, the suction material can be sucked in via a holding nozzle on the vacuum cleaner side, to and / or through the through-opening.

[0014] The holding plate can have a handle element which is designed to enable (simplified) arrangement and / or removal of the filter bag, in particular of the holding plate. For example, a user can pull out the filter bag using the handle element, e.g. after opening the lid of the vacuum cleaner. The handle element can be arranged in a material-locking manner on the holding plate. The handle element can be arranged on the holding plate, for example, via a film hinge. The handle element can be designed to be bendable and / or pivotable, in particular by means of a film hinge. The handle element can be designed to be pivotable between 0° and 180°, in particular between 45° and 135°, preferably between 80° and 100°, ideally by 90°, relative to the holding plate. The handle element can be designed to be (relatively) large and / or robust.Furthermore, the handle element can be arranged in a space-saving manner, particularly in the vacuum cleaner, for example, when the vacuum cleaner is closed (by a lid). When the vacuum cleaner is closed, particularly when the lid is closed, the handle element can thus be arranged (essentially) parallel to the lid.

[0015] The filter material, in particular a collar-shaped section of the filter material, can be attached and / or fixed to the holding plate. This can be reversible (e.g. for reuse of the holding plate and / or replacement of the filter material) or irreversible (e.g. for increased stability and / or tightness). The filter material can be glued to the holding plate (reversibly or irreversibly). This can enable particularly simple, fast and / or cost-effective production. For example, a (new) filter material can (reversibly) replace a used filter material by (re-)gluing it on. The filter material can be (irreversibly) welded to the holding plate. This can enable particularly robust and / or long-lasting production.

[0016] The filter material can have a filter ring, which is preferably arranged at or around a (single) opening in the filter material. The filter ring can stabilize the filter material, in particular near the opening. This allows the shape of the filter material to be (better) maintained. The filter ring can advantageously allow a simpler, more intuitive and / or more robust arrangement, in particular fastening, of the filter material, for example to a holding plate, a nozzle and / or a collar of the nozzle (see below). The filter ring can preferably be arranged flatly on or on (or around) the nozzle and / or the collar. The filter ring can be designed in the shape of a disc or perforated disc. This can enable improved (flat) fastening to a collar, in particular since the width of the filter ring and / or the collar allows more surface area for a fastening means, e.g. an adhesive connection.Alternatively or additionally, the filter ring can have a longitudinal extension along the suction direction. In this case, the filter ring and / or the collar can be adapted to the shape of the nozzle and / or the holding plate. For example, the filter ring can be designed so that it can be pushed onto the nozzle. Preferably, the filter ring can be adapted to the shape of the collar (and / or identical) and / or vice versa. This allows for particularly simple, intuitive and / or robust fastening. The filter ring can be connected to the filter material in a material-to-material bond. The filter ring can comprise the same material as the filter material. For example, the filter ring can be folded once or multiple times or have several layers of filter material. Alternatively or additionally, the filter ring can comprise a reinforcing material, for example a plastic and / or a metal. This enables greater robustness and / or (dimensional) stability.The filter ring can be glued, welded, pressed, stapled and / or clamped to the filter material.

[0017] Within the scope of the invention, it may be advantageous for the holding plate to have a nozzle on which the filter material is arranged, wherein the nozzle preferably has a non-cylindrical shape.

[0018] The retaining plate and the nozzle can be materially connected. This can advantageously result in particularly great robustness. For example, they can be manufactured (together) using an injection molding process and / or 3D printing. Alternatively, the retaining plate and the nozzle can be connected force-fitting and / or form-fitting. This means they can be manufactured separately, have different materials and / or be replaced separately, which can advantageously improve environmental friendliness. The nozzle can preferably be glued and / or welded to the retaining plate. Alternatively or additionally, it is conceivable for the nozzle to be reversibly and detachably attached to the retaining plate, for example by screwing. The retaining plate can have a counter nozzle (e.g. flush and / or aligned with the through opening) onto which the nozzle can be pushed and / or clicked.Furthermore, the counter-connector can have a counter-thread, to which a thread of the connector can be arranged, in particular screwed. The connector can preferably be arranged flush and / or aligned with or at a through-opening of the holding plate. In this case, suction material can preferably pass through the holding plate (and / or the counter-connector), in particular through the through-opening (or the counter-connector) and / or the connector, and in particular can be sucked through them.

[0019] The retaining plate can (only) have the connecting piece and, in particular, can otherwise have no (geometric) extension. For example, this can be the case if the connecting piece has a shape, e.g., elliptical-paraboloidal, which is (solely) designed to be arranged on a vacuum cleaner-side retaining piece (e.g., by "simply" plugging it on), in particular without requiring a shape of the (remaining) retaining plate, for example, extending perpendicular to the suction direction. Alternatively (or preferably), the retaining plate can have a connecting piece, which can be collar-shaped. This allows, for example, the retaining plate to be arranged rail-like on a vacuum cleaner-side retaining piece, for example, perpendicular to a suction direction, while, in particular, the connecting piece forms a (geometric) shape (essentially) along the suction direction.This can result in a particularly stable structure and / or easy maintenance (especially replacing the filter bag).

[0020] The nozzle and / or the retaining plate can be configured to allow for arrangement, in particular reversibly detachable attachment (e.g., by plugging), to a retaining nozzle on the vacuum cleaner side. This can facilitate maintenance, in particular replacement of the filter bag (e.g., by the user).

[0021] The nozzle can be designed (at least in sections, preferably completely) symmetrically, in particular rotationally symmetrically (e.g. with respect to a longitudinal axis and / or suction direction). This can enable simple and / or cost-effective production. The nozzle can have a round cross-section, in particular perpendicular to a longitudinal axis and / or axis of symmetry of the nozzle. The longitudinal axis can be formed (essentially) along a suction direction and / or axis of symmetry. The nozzle can be designed (at least in sections) tubularly and / or as a tube, wherein in particular the diameter can vary. It can preferably be provided that the diameter varies, in particular along a longitudinal axis, in particular varies progressively or continuously.In other words, it can be provided that the nozzle does not have a constant diameter, in particular (not even) in some sections, and / or is cylindrical. It can preferably be provided that the longitudinal axis, in particular the axis of symmetry, of the nozzle is not or predominantly not parallel to a lateral surface of the nozzle. In other words, the nozzle may not be or predominantly not be cylindrical.

[0022] The nozzle can be bent (arched) (at least in sections, preferably completely) and / or designed as an angled tube. The diameter can preferably be constant in order to advantageously enable simple and / or cost-effective production. This can be advantageous for reducing and / or circumventing installation space limitations, for example when a vacuum cleaner lid is very thick. Furthermore, this can be advantageous for designing the suction direction (non-linear), which can in particular improve the (automatic) opening, closing and / or sealing of a closure flap (see below), e.g. through improved flow behavior and / or optimized pressure distribution. For example, the air velocity in a section of an angled tube located further outwards can be greater than in a section located further inwards (closer to a center point, if, for example, a torus-shaped angled tube is assumed).The nozzle can have a preferably constant radius of curvature (at least in sections). This can enable simple manufacturing. Alternatively, the radius of curvature can vary, for example, linearly increasing or decreasing, which can enable advantageous adaptations to the installation space. The nozzle or angled pipe can have a pipe angle between 0° and 270°, for example between 1° and 180°, in particular between 3° and 90°, preferably between 5° and 60°, particularly preferably between 10° and 45°, ideally between 15° and 30°.

[0023] The nozzle can be cylindrical (at least in sections, preferably completely). This can enable simple and / or cost-effective production.

[0024] The nozzle can be designed elliptically (at least in sections, preferably completely). This can advantageously optimize stability, particularly along one axis (the longer semi-axis). This can advantageously optimize installation space, particularly due to a flatter design (along the shorter semi-axis). At the same time, the throughput can be kept constant and / or increased, for example, compared to a round nozzle.

[0025] Preferably, the nozzle can be designed to taper and / or widen (at least in sections, preferably completely); in particular, the cross-section can taper and / or widen. For example, the nozzle can be conical, funnel-shaped, paraboloidal, and / or hyperbolic. A taper, in particular along the suction direction, can be advantageous in order to increase the pressure and / or the (incoming flow) velocity (of the air or the suction material), for example for a, in the direction (along the suction direction) of and / or at the level of a closure flap. This enables the flap to open, close, and / or seal more quickly. Furthermore, jamming of the closure flap, for example due to suction material (e.g. coarse or bulky suction material, such as stones), can be prevented and / or reduced.Improved sealing can (in particular fundamentally) prevent and / or reduce (undesired) removal, falling out, and / or trickling out of a filter bag. Alternatively or additionally, an extension or widening of the nozzle can be provided, in particular for one, away from one (along the suction direction) and / or at the level of a closure flap. In this case, a filter bag, in particular a filter material, can advantageously be opened and / or spread out. As a result, the shape of the filter bag can advantageously be optimized and / or kept constant (e.g. when empty or partially empty). In particular, clogging and / or jamming can be prevented and / or reduced, in particular in a front part of the filter bag (in the suction direction). It can be provided that the nozzle is designed to taper and widen, in particular repeatedly.For example, it can be designed as a hyperbolic-paraboloid and / or an elliptical-paraboloid. This advantageously increases the pressure, particularly at the inlet into the filter material, for example, at the level of a closure flap. This makes it easier to open the closure flap. Furthermore, or at the same time, the filter bag or filter material can be expanded and / or shaped. Thus, the advantages can be combined.In this case, a hyperbolic-paraboloidal design can (also) be advantageous in order to promote fanning out of the filter bag, to prevent jamming of the closure flap with filter material, to enable a higher tensile strength of the filter bag with respect to the holding plate (in particular due to a reduced peeling effect), to enable better load-bearing capacity of a welded joint (which is more likely to be subjected to shear stress), to enable a higher stiffness of the welding surface (which can enable greater welding energy), and / or to enable a higher stiffness of the welding surface, which can in particular enable reduced effort for supporting the back side (of a hard component) during welding.In this case, an elliptical-paraboloidal design may (moreover) be advantageous in order to provide a threading aid for the filter bag, in particular in order to position it on a welding surface, to enable a higher rigidity of the welding surface (which may enable a higher welding energy), and / or to enable a higher rigidity of the welding surface, which may in particular enable a reduced effort for supporting the back side (of a hard component) during welding.

[0026] It may be particularly preferred if the nozzle is designed as a tapered pipe angle. The nozzle can be bulbous (at least in sections, preferably completely), have a groove and / or an undercut. This can be designed completely around the circumference or in sections along the circumference. This can (particularly at this point) enable simplified (e.g. directly visible to the user) and / or more robust arrangement, in particular fastening of the filter material to the nozzle. For example, the filter material can be pressed in and / or snapped into place. This can improve the tightness and / or prevent the filter material from being pulled off. This can enable reversible fastening of the filter material to the nozzle and / or optimize or strengthen irreversible fastening.

[0027] The nozzle can have a rectangular and / or square cross-section. This can enable particularly simple and / or cost-effective production.

[0028] Within the scope of the invention, it is conceivable that the holding plate has a nozzle to which the filter material is fastened by a fastening means, in particular an adhesive connection and / or a welded connection.

[0029] The nozzle can preferably have a collar, in particular an angled one. The collar can be designed as a material extension extending from the nozzle. The collar can be arranged at one end of the nozzle, preferably along the suction direction, in particular at an end facing away from the vacuum cleaner-side holding nozzle. The collar can be arranged (essentially) parallel to a (closed) closure flap. The filter material can be arranged on the nozzle and / or the collar, in particular fastened by the fastening means. In this respect, the corresponding explanations (for example below) can apply to the nozzle and / or the collar. The filter material can be arranged (only or exclusively) on the collar, in particular if this is provided (at all). Accordingly, it can be provided that there is no contact or no fastening of the filter material to the nozzle.This advantageously allows for particularly simple production. For example, the filter material can be attached directly to the collar using the fastening means. This allows for advantageous flat attachment (see also above). The collar can be designed at an angle relative to the nozzle and / or the holding plate. For example, the collar can have an angle of between 0° and 90°, in particular between 1° and 80°, for example between 5° and 70°, preferably between 10° and 50°, particularly preferably between 15° and 40°, ideally between 20° and 30°, relative to the longitudinal axis of the nozzle, the suction direction and / or the holding plate. This advantageously prevents undesired and / or unintentional intervention (e.g. by a user), in particular from above when the lid is open, into or into the nozzle or the closure flap.

[0030] Preferably, the fastening means can fasten the filter material to the nozzle and / or collar all the way around. This enables a particularly robust and / or long-lasting connection. Alternatively, fastening can be made in sections, in particular along the circumference of the nozzle. This can be advantageous in order to be able to detach the filter material from the nozzle and / or collar more easily, for example in order to attach new filter material. Preferably, the fastening means can be arranged on the outside of the nozzle and / or collar. The fastening means can be designed to be reversibly detachable. This can advantageously enable easy replacement. Alternatively, the fastening means can fasten the filter material (and / or the filter ring) to the nozzle (or collar) in a non-detachable manner and / or only by destruction. This can advantageously achieve a particularly high level of longevity, robustness and / or tightness.The filter material, in particular a filter ring (see above), can be arranged flush with the nozzle and / or collar and, in particular, fastened, for example, by an adhesive connection and / or welded connection. This can be particularly simple and / or cost-effective. Alternatively or additionally, the filter material and / or a filter ring can be pushed onto the nozzle and / or collar (and, in particular, additionally releasably glued). This can result in a reversibly detachable connection that provides good sealing, enables replacement, and / or improves environmental friendliness. For example, (only) the filter material (and / or the filter ring) can be disposed of, which can preferably be biodegradable, while the other components, in particular, can be replaceable but do not necessarily have to be disposed of.This also allows different disposal methods to be used. For example, the filter material (and / or the filter ring) can be biodegradable, while the nozzle, the collar and / or the holding plate in particular comprise a plastic and / or a metal. The nozzle can extend (at least in sections) into the filter material, in particular into an interior space formed by the filter material, preferably when the filter material is arranged on the nozzle and / or collar. Alternatively or additionally, the fastening means can comprise a band, in particular an elastic band (e.g. rubber), (plastic and / or plastic fabric), a cord, a (twistable) wire, a ratchet, a clamp and / or a cable tie, which can in particular be designed to be reversibly detachable. The fastening means can comprise one (or more), preferably manually operable, fastening unit(s) (e.g.Knurled nut), with which the fastening means can be at least partially fastened and / or held together. In this way, for example, a clamp, a band, a ratchet and / or a cable tie (reversibly detachable) can be fixed or secured. Alternatively or additionally, the fastening unit(s) can fasten the filter material and / or the filter ring to the nozzle (and / or collar), for example via (screw) holes provided for this purpose. The filter material, in particular a filter ring, can preferably be fixed, in particular clamped, between the nozzle (and / or collar) and the fastening means in a force-fitting and / or form-fitting manner. Alternatively or additionally, the filter material and / or the filter ring can be welded to the nozzle (and / or collar). This advantageously enables particularly robust fastening and / or optimized sealing.Alternatively or additionally, the filter material and / or the filter ring can be materially bonded to the nozzle (and / or collar), in particular by melting. This advantageously enables particularly robust fastening and / or optimized sealing. Furthermore, this can form and / or fix the shape of the filter bag, in particular of the filter material, at least in sections (in particular by first melting and then solidifying). The nozzle can have, at least in sections, preferably over its entire circumference, a fastening groove in which the filter material, the filter ring and / or the fastening means can be (at least partially) arranged and / or inserted. This can result in particularly advantageous sealing, robustness and / or longevity, wherein replaceability and / or environmental compatibility can preferably be provided at the same time.This can further increase safety and / or user-friendliness, since in particular correct and / or simple fastening can be enabled. Alternatively or additionally, it is conceivable for the filter material, in particular the filter ring, to have a bayonet lock, via which a reversibly detachable fastening to the nozzle and / or the collar is enabled. This can advantageously provide a robust, replaceable and / or intuitive connection option. It can be provided that the fastening means is designed to clamp the filter material to the nozzle and / or collar. In this case, the fastening means can have a ring, in particular a closed, preferably elastic, which is provided in particular separately or integrated on the fastening means and can be arranged between the fastening means and the nozzle or collar. In this case, the filter ring can be designed as an elastic ring.This can enable particularly good sealing. In addition, an elastic ring can still enable good sealing later on, even if, for example, the fastening means (such as a clamp) exerts less tension over time and / or due to heat, in particular due to initial compression. It can also be provided that the ring and / or the filter ring is designed to be shrinkable, in particular radially (inwardly) shrinkable, preferably when heated. It can therefore be a shrink ring or shrink tube. This can advantageously enable a particularly stable and / or tight fastening. A combination of shrinkable fastening means, ring and / or filter ring with a groove or undercut on the nozzle can be particularly advantageous and, in particular, result in a particularly robust and / or tight connection.Alternatively or additionally, the nozzle and / or collar can also have a shrink film, which can in particular be wrapped around it. Alternatively or additionally, the fastening means can have a (plastic) sealing compound, which can in particular be arranged for sealing between the fastening means and the nozzle and / or collar. The fastening means can comprise a two-component adhesive (or 2-component injection molding), which can preferably be combined with an (elastic) ring, sealing element, and / or filter ring, in particular for fastening (gluing) it.

[0031] Within the scope of the invention, it can be provided that the holding plate has a nozzle, wherein the nozzle, in particular a longitudinal axis of the nozzle, is designed to be angled relative to the holding plate, wherein in particular an angle between the holding plate and the nozzle, in particular between the holding plate and a longitudinal axis of the nozzle, is designed to be acute or blunt.

[0032] The longitudinal axis can be arranged centrally and / or centrally (relative to the nozzle). The longitudinal axis can be configured perpendicular to a suction direction and / or flow direction. The longitudinal axis can have or be an axis of symmetry, in particular if the nozzle is configured symmetrically. The longitudinal axis can be configured perpendicular (in particular at an angle of 90°) to the holding plate. This can advantageously enable simple and / or cost-effective production. Preferably, the longitudinal axis can have an angle to the holding plate, which angle can be acute or blunt. This allows the design to be adapted, the installation space to be optimized and / or installation space requirements, e.g. from the vacuum cleaner, to be taken into account. The nozzle can therefore be designed to point downwards.This can prevent the likelihood of (unwanted) removal, falling out, and / or trickling out of the filter bag, preferably even if the closure flap is partially leaking. This can advantageously prevent the closure flap from jamming, particularly since gravity allows the suction material to enter the filter bag, especially when the closure flap is closed slowly, and preferably does not remain in the nozzle ("stays").

[0033] It is further conceivable that the holding plate has a nozzle, wherein the nozzle has an undercut at least in sections in order to preferably enable an improved fastening of the filter material to the nozzle.

[0034] It can be provided that the nozzle has one, two or more undercuts. Preferably, the (or each) undercut can be designed such that it enables adjustability, in particular in a grid-like manner, of the nozzle, in particular relative to the holding plate and / or the collar. In other words, the nozzle can be designed to be adjustable, in particular in that the holding plate and / or the collar can engage at different undercuts. Accordingly, the length of the nozzle can be adjustable in order to advantageously provide adjustability in the event of excessive clogging and / or jamming of certain suction material in order to reduce and / or prevent this. Alternatively or additionally, the (or each) undercut can be designed such that the filter material, the filter ring, and / or the fastening means can be at least partially received therein.This can advantageously enable improved fastening and, in particular, simultaneously facilitate replacement. Accordingly, the undercut(s) can have a dual function, in particular for fastening on the one hand and for adjustability on the other.

[0035] Within the scope of the invention, it is optionally possible for the holding plate to have a socket, wherein the holding plate and / or the socket has at least in sections a counter rail, a counter thread, and / or a counter click connection, which can be arranged in particular on a rail, a thread, and / or a click connection of a vacuum cleaner-side holding socket (see below).

[0036] In this case, a counter rail can preferably establish a positive and / or non-positive connection with a rail. This allows the filter bag to be reversibly and detachably attached to the vacuum cleaner-side retaining piece, particularly via the retaining plate and / or the piece. The filter bag can preferably be inserted or removed from above, advantageously intuitively.

[0037] In this case, a mating thread can preferably create a positive and / or non-positive connection with a thread. This allows the filter bag to be reversibly and detachably attached to the vacuum cleaner-side holding socket, in particular via the holding plate and / or the socket. The filter bag can preferably be inserted, for example, from above, and then at least partially rotated so that the thread and the mating thread engage with each other. This can advantageously enable particularly good sealing. This can prevent and / or reduce pressure loss and / or power loss. The thread and / or mating thread can preferably be designed as a bayonet lock and the respective other component as a complementary counterpart.

[0038] It is also conceivable that the filter bag has a seal, wherein the seal is arranged between the filter material and the holding plate, in particular between the filter material (and / or filter ring) and a nozzle of the holding plate.

[0039] Alternatively or additionally, the seal or a seal can be arranged between the collar and the filter material (and / or filter ring). The seal can advantageously provide improved sealing and / or prevent (unintentional) removal of suction material. The seal can be cylindrical, (partially) conical, torus-shaped, and / or with an elliptical cross-section.

[0040] Within the scope of the invention, it is optionally possible for the filter bag to have a closure flap which is arranged on the holding plate, or in particular on a nozzle and / or collar of the filter bag, wherein the closure flap is preferably designed to prevent removal of suction material from the filter bag.

[0041] Preferably, the closure flap is designed to provide a high closing force in the closed state and / or a low closing force in the open state.

[0042] The closure flap can be arranged on the side of the filter bag and / or the side facing away from the holding socket on the vacuum cleaner side. It can be provided that the closure flap is arranged in the socket, for example centrally (in the direction of suction). This can protect the closure flap particularly well and / or ensure opening and / or closing (of the closure flap), for example because no suction material in or out of the bag can block and / or jam the closure flap. It can be provided that the closure flap is arranged on the socket and / or collar, in particular at the level of and / or parallel (when the closure flap is closed) to a collar. The closure flap can be arranged in the filter material, in particular in an interior space of the filter material.The nozzle can extend into the filter bag, in particular into the filter material and / or an interior space of the filter material, at least in sections. Preferably, the closure flap can be permanently attached to or in the nozzle and / or collar, for example by a material-to-material connection. This can enable particularly simple and / or rapid production. Alternatively or additionally, welding is conceivable, which enables a particularly robust connection and / or provides the option of using different materials. Alternatively or additionally, gluing is conceivable, which advantageously enables simple and / or cost-effective production. In addition, different materials can be used. Furthermore, maintenance and / or repair can be simple and / or cost-effective, particularly if the closure flap is torn off (e.g. due to wear or material fatigue).An arrangement on the retaining plate can enable the nozzle, especially including the filter material, to be replaced. An arrangement on the nozzle and / or collar allows the retaining plate to be made of a different, particularly harder and / or stiffer, material.

[0043] The nozzle and / or collar may be provided with a (unilateral) extension, in particular to secure and / or facilitate opening and / or closing of the closure flap. The extension may be arranged on the opposite side of a connecting section, a leading edge, and / or a groove. This may be combined, for example, with an angled collar.

[0044] The filter bag may preferably have a closure flap according to the second aspect.

[0045] It can (alternatively) also be provided that the closure flap or another closure flap is arranged on a support bracket on the vacuum cleaner side. An additional closure flap, which is designed to close more easily, for example through increased restoring force (e.g., reinforced ribs) and / or perforation stiffness, can improve the tightness of the other closure flap, particularly one located further back along the suction direction, particularly since no or less suction material reaches it, as this can preferably be prevented by the additional closure flap.

[0046] The above object is achieved according to a second aspect by a closure flap according to the invention for a filter bag, preferably according to the first aspect, in particular for a vacuum cleaner, preferably according to the third aspect, wherein the closure flap is designed to open or close the filter bag.

[0047] Accordingly, the closure flap can be designed to prevent and / or reduce (unwanted) removal, falling out and / or trickling out of vacuumed material from the filter bag. This can preferably be made possible by opening and / or closing, in particular reversibly. Alternatively or additionally, the closure flap can be designed to keep the filter bag open and / or closed. Preferably, the closure flap can be at least partially, preferably completely, open or opened when the vacuum cleaner is or will be switched on, whereby vacuumed material can advantageously pass through the closure flap and reach the filter bag.Preferably, the closure flap can be at least partially, preferably completely, closed or closed when the vacuum cleaner is or becomes switched off, whereby suction material can advantageously not pass through the closure flap and cannot enter and / or exit the filter bag. Furthermore, removal of suction material can be avoided, in particular, when the vacuum cleaner, in particular a suction fan of the vacuum cleaner, is switched off and / or the filter bag has been removed or is not arranged on the vacuum cleaner-side retaining piece.

[0048] This results in the same advantages with regard to a closure flap according to the invention according to the second aspect as have already been described with regard to a filter bag according to the invention according to the first aspect.

[0049] Furthermore, it can be provided within the scope of the invention that the closure flap is designed to be movable, in particular pivotable and / or rotatable, relative to the filter bag, in particular to a filter material, a holding plate and / or a nozzle of the filter bag.

[0050] Pivotable can be understood in this case as being similar to a garage door. The closure flap can preferably be fastened on one side, in particular to an outer (circumferential) edge, for example via a connecting section, preferably (underneath) on the holding plate, the nozzle and / or the collar. The directions bottom, top, front, back, right and / or left, which in particular form a (three-axis) right-hand system, can be used as examples and refer in particular to an operating state in which the filter bag is arranged in a vacuum cleaner. Otherwise, the closure flap is preferably freely movable, in particular relative to the nozzle. In this case, the closure flap can be fastened underneath, preferably in the installed state. This can advantageously be combined with a downwardly angled and / or curved nozzle, which can improve opening and / or closing.This can improve the seal. Alternatively, the closure flap can be mounted on top, which advantageously utilizes gravity when closing to enable faster closure and / or improved sealing.

[0051] With regard to the present invention, it is conceivable that the closure flap is designed to open towards and / or into an interior of the filter bag and / or the filter material.

[0052] The interior space can be surrounded by the filter material. The closure flap can open and / or close along and / or perpendicular to a suction direction. Preferably, the closure flap can be arranged substantially perpendicular to the suction direction when the vacuum cleaner (in particular the suction fan) is switched off. When or after the vacuum cleaner is switched on, which in particular starts the suction fan, the closure flap can (begin to) open. When the vacuum cleaner is switched on, in particular after a short time, the closure flap can be arranged substantially angled (in particular at an acute angle) and / or perpendicular to the suction direction.

[0053] Furthermore, it is conceivable that the closure flap, in particular in sections, comprises an elastic material.

[0054] The closure flap can preferably be designed essentially like a lid. The closure flap can be designed to be flat, planar and / or shallow. The closure flap can have a thickness of between 0 and 5 mm, for example between 0.3 and 4 mm, in particular between 0.5 and 3 mm, preferably between 0.7 and 2 mm, particularly preferably between 0.9 and 1.5 mm. The closure flap can have a rectangular, square, rounded and / or round shape. The closure flap can preferably be adapted to the shape and / or cross-section of the nozzle, in particular such that the closure flap can completely close the nozzle and / or the collar (in the closed state).

[0055] An elastic material can advantageously prevent the flap from remaining completely or predominantly open, for example due to jamming (by vacuumed material). In other words, the closing flap can be designed to close around vacuumed material that has become jammed in the closing flap, so that a (reduced) seal can advantageously still be achieved. This can advantageously achieve a better seal than is possible with a rigid, hard and / or stiff closing flap. Furthermore, this can enable vacuuming, in particular independently. Jammed vacuumed material can be (independently) removed while the vacuum cleaner is switched off, switched on and / or operated. This may not work or may work less well with rigid, hard and / or stiff closing flaps, for example.

[0056] The elastic material can comprise a plastic, in particular an elastomer, e.g. (vulcanizates of) natural rubber and / or silicone rubber. Alternatively or additionally, the elastic material can comprise a rubber. Preferably, an elastic material is not damaged or is more severely damaged, for example, by (very) hard suction material, such as when a stone or diamond is sucked in.

[0057] Within the scope of the invention, it may be advantageous for the closure flap to be formed in one piece, in particular from the same material (for example a plastic injection-molded part with only one component or a plastic injection-molded part with at least two components), and in particular to have a one-piece and / or integrated closure mechanism.

[0058] The closure flap can (alone) be designed as a single piece (in particular, all elements of the closure flap are connected to one another by a material fit, for example by an injection-molded part). This can enable simple production. The closure flap can also be designed as a single piece and / or as a material fit with the nozzle and / or collar. This can enable simple production, for example using an injection-molding process. A single-piece (uniform material) design can improve recycling, since in particular only one material can be disposed of. Fewer parts can be used, which can in particular enable simpler production. The force (distribution), the tightness, the closing behavior, the opening behavior and / or the shape can advantageously be designed depending on the shape, geometry and / or material, in particular during development (including of further models).It can be provided that no (additional) elastic element, e.g., a spring, is used. Preferably, opening and / or closing of the closure flap by (switching on and / or off) the suction fan can be enabled by the shape of the closure flap and / or the material properties of the closure flap, in particular the rigidity. In this case, a closure mechanism can have (at least) one connecting section, one leading edge, one groove, one reinforcing rib, one transverse rib, one longitudinal rib, and / or one diagonal rib. It can be provided that the closure flap has at least one predetermined breaking point and / or reinforcement point (in particular holes for cable ties, adhesives, or the like). As a result, the elasticity of the closure flap can be (subsequently) changed, adjusted, and / or increased. For example, a predetermined breaking point can be broken open if the elasticity is too low and / or the rigidity is too high, e.g.,due to material aging. A predetermined breaking point can, for example, be formed as a pre-marked and / or pre-perforated section in a rib, e.g. in a reinforcing rib, a transverse rib, a longitudinal rib, and / or a diagonal rib. Alternatively or additionally, the elasticity of the closure flap can be (subsequently) changed, adjusted and / or reduced. For example, a reinforcing point can be created or expanded if the elasticity is too high and / or the rigidity is too low. For this purpose, a reinforcing point can, for example, be formed as an interrupted rib, e.g. in a reinforcing rib, a transverse rib, a longitudinal rib, and / or a diagonal rib. The rigidity can be increased by connecting the rib parts, e.g. by closing or bridging the interruption. For this purpose, a hardening adhesive and / or melting / welding can be used.

[0059] Within the scope of the invention, it is conceivable that the closure flap has a groove, in particular in a lower section of the closure flap, wherein the groove is designed to facilitate opening and / or closing of the closure flap, in particular relative to the holding plate.

[0060] Preferably, it can be provided that the connecting section, the leading edge, the groove, the reinforcing rib(s), the transverse rib(s), the longitudinal rib(s), and / or the oblique rib(s) are arranged on one (single) side (preferably on the filter material side and / or facing away from the vacuum cleaner side retaining piece) of the closure flap, are materially connected, and / or are designed as a single piece. Accordingly, they can be designed as an integrated unit. The other side (inflow side) can preferably be designed as a smooth unit. Alternatively or additionally, application, (irreversibly detachable) fastening, e.g. by gluing, two-component fastening, in particular 2-K injection molding, and / or welding is conceivable. This can increase stability and / or enable different materials (e.g. different closure flap and ribs).For example, the reinforcing rib(s), the transverse rib(s), the longitudinal rib(s), and / or the diagonal rib(s) can comprise a (different) plastic and / or metal, e.g., hard plastic and / or spring steel. This can enable improved robustness, rigidity, durability, and / or resilience. It can be provided that the reinforcing rib(s), the transverse rib(s), the longitudinal rib(s), and / or the diagonal rib(s) have at least one predetermined breaking point and / or reinforcement point, in particular to protect against aging processes. In this case, for example, (aging-related) hardening can be (at least partially) compensated for by the (opening) of at least one predetermined breaking point. Alternatively, for example, (aging-related) softening and / or reduced rigidity can be (at least partially) compensated for by the hardening of at least one reinforcement point. For example, a reinforcement point can have an interruption in a rib.This can be closed, for example, by gluing and / or heating (e.g. welding) to increase rigidity.

[0061] Preferably, the connecting section can have the groove (or vice versa). The connecting section and / or the groove can be designed as a film hinge. The groove can have a material recess. The groove can preferably be designed to facilitate opening and / or closing of the closure flap. The groove can preferably be formed substantially perpendicular to the suction direction, in particular from left to right. The groove can be arranged in a lower section of the closure flap. The closure flap can have: a lower section, in particular at the very bottom of the closure flap, a middle section, in particular in the middle of the closure flap, and / or an upper section, in particular at the very top of the closure flap.

[0062] The groove can preferably be arranged or configured close to and / or adjacent to the connecting section. The groove can be configured so that the closure flap, particularly when opening and / or closing the closure flap, is bent along the groove, collapses, and / or has a defined weak point (running along the groove) or "predetermined bending point." Accordingly, the groove and / or the region of the closure flap (immediately) adjacent to the groove can be configured as a rotation axis and / or hinge. The groove can preferably be spaced from the connecting section, whereby the at least one reinforcing rib is advantageously not bent or collapsed directly at the connecting section and / or the leading edge, in order, in particular, to avoid influencing and / or disrupting the opening and / or closing (through undesired support). For example, the groove can have a round, particularly semicircular, cross-section.In other words, the groove can be formed as a round groove in the surface of the closure flap.

[0063] It can be provided that the closure flap has at least one, at least two, at least three, at least four, at least five or a plurality of grooves. These can be arranged in parallel. This can be combined with ribs (see below). Alternatively, no ribs can be provided. In this case, for example, an increased thickness of the closure flap can be provided, which is combined with at least two (or more) grooves in order to enable the closure flap to be opened and / or closed, in particular by at least partially bending at the groove(s). This can facilitate production and / or offer easier cleaning options.

[0064] Alternatively or additionally, the closure flap can have a crown and / or be designed as such, which can be configured to improve opening and / or closing. This can achieve an (alternative and / or additional) improvement in sealing, opening, and / or closing. The closure flap and / or the crown can be designed and / or function similarly to a "clicker."

[0065] It can be provided within the scope of the invention that the closure flap has a leading edge, in particular in a lower section of the closure flap, wherein the leading edge is designed to support the closure flap against the holding plate, in particular against a support piece of the holding plate.

[0066] The leading edge can be formed substantially parallel to the groove. The leading edge can be rib-like and / or like a (transverse) rib, for example substantially cuboid-shaped, in particular on the (surface of the) closure flap. Advantageously, the leading edge can support the closure flap against the retaining plate, preferably against the nozzle. It can be provided that the lower section of the closure flap, in particular the section below the groove, is not or hardly pivotable (in the suction direction), in particular since the leading edge supports the closure flap, and in particular this (very lower) part. Preferably, the leading edge can have a beveled side to advantageously increase stability. The beveled side can face the groove. Preferably, the beveled side can merge directly into the groove.This can preferably increase stability and / or (simultaneously) enable particularly reliable pivoting of the closure flap through or at the level of the groove. Preferably, the closure flap, in particular the closure flap, can be reinforced at the level of and / or along the leading edge, thus in particular having a greater thickness. This can advantageously (additionally) increase stability and / or robustness.

[0067] It is further conceivable that the closure flap has at least one reinforcing rib, in particular in a lower section of the closure flap.

[0068] Within the scope of the invention, a rib, in particular a leading edge, reinforcing rib(s), transverse rib(s), longitudinal rib(s), and / or diagonal rib(s) can be (essentially) cuboid-shaped or trapezoidal (with a height and / or width decreasing towards the outside) and / or arranged on the (surface of the) closure flap. This can enable a material-to-material, particularly simple and / or cost-effective production. Alternatively or additionally, a rib, in particular a reinforcing rib, transverse rib, longitudinal rib, and / or diagonal rib can be (essentially) designed as or like a bead. It can also be provided that these are designed in such a way as to have a decreasing width, height and / or rigidity towards a (closing) edge of the closure flap.

[0069] Particularly preferably, the reinforcing rib(s), transverse rib(s), longitudinal rib(s), and / or oblique rib(s) can be configured to provide the closure flap with a high closing force in the closed state and / or a low closing force in the open state (see the following explanations). A straight rib can have a high closing force and / or a curved rib can have a low closing force. A wider, higher, and / or longer rib can have a higher closing force, in particular than a narrower, lower, and / or shorter rib.

[0070] It may be particularly preferred if the at least one reinforcing rib is designed to increase the rigidity of the closure flap, in particular along an extension direction of the at least one reinforcing rib. An increased thickness and rigidity of the closure flap and / or the closing edge can (in principle) lead to a lower tendency to flutter, which advantageously prevents and / or reduces (undesired) noise generation, in particular at high frequencies (e.g. in the range between 1 kHz and 20 kHz). Furthermore, this can lead to improved sealing, in particular since no (or less likely) distortion and / or faulty closure occurs. It may be particularly preferred that the at least one reinforcing rib preferably bridges and / or crosses (vertically) the groove.As a result, when the closure flap is pivoted, the at least one reinforcing rib can collapse, be deformed (at this point), bend, and / or provide a restoring force. A stiffer reinforcing rib can have a higher restoring force and, in particular, enable faster opening and / or closing. Accordingly, the at least one reinforcing rib can be designed and / or act like a spring. This can preferably eliminate the need for further and / or different restoring elements (e.g., springs). This can improve production, costs, environmental friendliness, robustness, and / or recyclability.Preferably, the at least one reinforcing rib can be connected to the closure flap, preferably in a materially bonded manner, on both sides of the groove, in particular above and below the groove, but preferably not at the level of the groove (advantageously facilitated pivoting) or also at the level of the groove (advantageously simplified production, increased stability and / or robustness).

[0071] The stiffness of the closure flap can be designed depending on the position, number, length, width, height and / or stiffness of a rib, in particular a leading edge, groove, reinforcing rib(s), transverse rib(s), longitudinal rib(s), and / or oblique rib(s), and in particular can be developed application-specifically.

[0072] The at least one reinforcing rib can be arranged in the lower, middle and / or upper section. The at least one reinforcing rib can preferably be formed from the lower section up to the middle section and / or upper section. The at least one reinforcing rib can run substantially perpendicular to the suction direction and / or from bottom to top. An arrangement of the at least one reinforcing rib over the lower, middle and / or upper section can advantageously enable particularly high stability, robustness and / or rigidity (in the relevant section) of the closure flap. The at least one reinforcing rib can extend over the entire height or dimension of the closure flap or only partially. The closure flap can be designed as a whole, rigid and / or stiffened, in particular starting from the groove upwards, and in particular can be pivoted.Alternatively, it can also be provided that at least one reinforcing rib, at least two reinforcing ribs and / or at least three reinforcing ribs are configured in the lower, middle and / or upper section, but preferably not in the upper, middle and / or lower section. Advantageously, the section in which at least one reinforcing rib is arranged can be stiffer than a section in which no (or fewer) reinforcing ribs are arranged. Alternatively, it can also be provided that at least one reinforcing rib, at least two reinforcing ribs and / or at least three reinforcing ribs are configured in the lower and / or middle section, but preferably not in the upper section. As a result, the upper section can advantageously be configured to be(more) elastic and / or less rigid. This can advantageously enable improved opening, closing and / or sealing.In this case, the upper section, in particular a closing edge of the closure flap (in the upper section), which in particular opens first and closes last, can be (relatively) elastic. This allows suction material (here) to pass through more easily, even if the closure flap is already (partially) closing. This can prevent jamming, removal, falling out and / or trickling out of suction material. Alternatively or additionally, this can advantageously result in (nevertheless) jammed suction material being flush enclosed by the closing edge (in this upper section), whereby a seal can preferably be formed around the jammed suction material, which advantageously increases the (overall) seal.

[0073] The at least one reinforcing rib can be arranged substantially centrally, particularly in the transverse direction and / or from left to right. For example, the reinforcing rib(s) can be arranged, preferably evenly distributed, in the middle quarter, the middle third, the middle half, the middle two-thirds, and / or the middle 80% of the closure flap. A (relatively) central arrangement increases the rigidity in the middle and / or enables particularly high elasticity (and improved sealing) at the closing edge. A (relatively) distributed and / or external (left or right) arrangement increases the rigidity over a larger area, in the edge region and / or to the left or right. This allows the width of the elastic closing edge to be fixed and / or "adjusted."

[0074] At least two or at least three parallel reinforcing ribs can be formed. This can advantageously lead to low material expenditure and at the same time good stability and / or rigidity. At least two or at least three reinforcing ribs can be formed that converge on one another. This can advantageously lead to low material expenditure and at the same time good stability and / or rigidity. As a result, the reinforcing ribs, in particular in an upper section of the closure flap, can be further spaced from the (lateral) closing edge. This can improve closing, opening and / or sealing. It can be particularly preferred to arrange (exactly) three reinforcing ribs on the closure flap. A central reinforcing rib can run from top to bottom.Furthermore, a left and a right reinforcing rib can be angled, in particular in the direction of the central reinforcing rib, in particular converge towards it.

[0075] It may be particularly preferred if the at least one reinforcing rib has and / or provides greater rigidity than the remaining ribs, in particular the transverse rib(s), longitudinal rib(s), and / or diagonal rib(s). Preferably, the transverse rib(s), longitudinal rib(s), and / or diagonal rib(s) have and / or provide (substantially) identical rigidity, for example, by having a comparable and / or identical length, width, and / or height.

[0076] It can be provided that the at least one reinforcing rib is higher, wider, and / or has multiple ribs, particularly compared to the other ribs. This can increase the closing force and / or closing speed, and advantageously prevent the flap from remaining (partially) open due to jammed suction material. The at least one reinforcing rib can be (empirically) optimized, for example, the width (rib thickness) and / or height (rib height). This can be optimized for a large opening angle during vacuuming (in particular, low risk of jamming of suction material and / or high volume flow) and / or rapid closing after switching off the vacuum cleaner (in particular, low risk of spillage) and / or dimensional stability at high storage temperatures. For example: for thermoplastic elastomer with hardness 59 Shore A: rib height 2.6 mm / rib thickness 1.0 mm at the base to 0.81 mm at the top edge for thermoplastic elastomer with hardness 50 Shore A: rib height 3.0 mm / rib thickness 1.0 mm at the base to 0.78 mm at the top edge for thermosetting elastomer with hardness 55 Shore A: rib height 2.78 mm / rib thickness 0.84 mm

[0077] In this case, the ribs, in particular the reinforcing ribs, may be arranged (as far as possible) from the (closing) edge. This can prevent the closure flap from being completely open or wide open; in particular, it can instead be nestled against and / or around the suction material.

[0078] The remaining ribs (especially not the reinforcement ribs) can be optimized. For example, at least one of the following features can be provided: Rib height 3.0 mm / rib thickness 1.38 mm at the base ... 1.2 mm at the top edge Flap thickness: 1.0 mm / 0.25 mm (e.g. groove), especially in the area around the groove, Flap material: Best opening and closing behavior after switching off the suction cup with thermosets, EPDM and / or rubber NBR ∘ EPDM with hardness 50 Shore A, tensile strength 5.5 MPa ∘ Best manufacturability with thermoplastics, e.g. manufactured as a 2K injection molding with a hard component of the holding plate ∘ (In empirical tests) determined as the most suitable material with regard to opening and closing behavior and manufacturability: ▪ TPE with hardness 59 Shore A, tensile strength 8.5 MPa, compression set as low as possible (especially <= 24% (70 ° C 24h) and / or ▪ alternatively or additionally TPE with hardness 50 Shore A, Tensile strength 6 MPa, compression set as low as possible (especially <= 21% (70°C 24h)).

[0079] It is also conceivable that the closure flap has (at least) one transverse rib, in particular in a central section of the closure flap, wherein the transverse rib is preferably interrupted in the middle.

[0080] It may be particularly preferred if the at least one transverse rib is designed to increase the rigidity of the closure flap, in particular along an extension direction of the at least one transverse rib. It may be particularly preferred if the at least one transverse rib is preferably formed parallel to the groove and / or leading edge. As a result, the at least one transverse rib can increase the rigidity perpendicular to a suction direction and / or from left to right. The preferably central interruption can increase the elasticity and / or reduce rigidity (at this point). This can advantageously lead to improved sealing at the closing edge, in particular on the left and / or right.

[0081] The at least one transverse rib can be arranged in the lower, middle and / or upper section. Preferably, the at least one transverse rib can be formed in the middle section, which advantageously best improves the (overall) stability. The at least one transverse rib can be formed substantially perpendicular to the suction direction and / or from left to right. An arrangement of the at least one transverse rib over the (entire) lower, middle and / or upper section can advantageously enable particularly high stability, robustness and / or rigidity (in the relevant section) of the closure flap. The at least one transverse rib can extend over the entire width or dimension of the closure flap or only partially. The closure flap can be designed as a whole, in particular parallel to the groove, to be rigid and / or stiffened, and in particular can be pivoted.Alternatively, it can also be provided that at least one transverse rib, at least two transverse ribs and / or at least three transverse ribs are configured in the lower, middle and / or upper section, but preferably not in the upper, middle and / or lower section. Advantageously, the section in which at least one transverse rib is arranged can be stiffer than a section in which no (or fewer) transverse ribs are arranged. Alternatively, it can also be provided that at least one transverse rib, at least two transverse ribs and / or at least three transverse ribs are configured in the middle and / or upper section, but preferably not in the upper and / or lower section, where in particular the leading edge is already arranged (and preferably provides stability and / or stiffness). As a result, the lower section can advantageously be designed to be more elastic or less rigid. This can save material.This can advantageously enable improved opening, closing and / or sealing. The upper section, in particular a closing edge of the closure flap (in the upper section), which in particular opens first and closes last, can be (relatively) elastic. This allows suction material to pass through more easily (here), even if the closure flap is already (partially) closing. This can prevent jamming, removal, falling out and / or trickling out of suction material. Alternatively or additionally, this can advantageously result in (nevertheless) jammed suction material being flush enclosed by the closing edge (in this upper section), whereby a seal can preferably be formed around the jammed suction material, which advantageously increases the (overall) seal.

[0082] The at least one transverse rib can be arranged substantially centrally, particularly in the longitudinal direction (extension of the longitudinal ribs) and / or from top to bottom. For example, the transverse rib(s) can be arranged, preferably evenly distributed, in the middle quarter, the middle third, the middle half, the middle two-thirds, and / or the middle 80% of the closure flap. A (relatively) central arrangement increases rigidity in the middle and / or enables particularly high elasticity (and improved sealing) at the closing edge. A (relatively) distributed and / or external (left or right) arrangement increases rigidity over a larger area, in the edge region, and / or to the left or right. This allows the width of the elastic closing edge to be fixed and / or "adjusted."

[0083] At least two or at least three parallel transverse ribs can be formed. This can advantageously lead to good or uniform stability and / or rigidity. At least two or at least three transverse ribs converging and / or transverse ribs with converging ends can be formed. This can advantageously lead to low material expenditure and at the same time good stability and / or rigidity. As a result, the transverse ribs, in particular in a lateral section of the closure flap (left and right) and / or upper section, can be further spaced from the (corresponding adjacent) closing edge. This can improve closing, opening and / or sealing. It can be particularly preferred to arrange (exactly) three transverse ribs on the closure flap. A central transverse rib can run from left to right.Furthermore, a left and a right transverse rib can be angled, in particular in the direction of the central transverse rib, in particular converging towards it.

[0084] Within the scope of the invention, it is optionally possible for the closure flap, in particular in an upper section of the closure flap, to have a longitudinal rib and / or at least one oblique rib, in particular a left oblique rib and / or a right oblique rib.

[0085] It may be particularly preferred if the (at least one) longitudinal rib and / or at least one diagonal rib is designed to increase the rigidity of the closure flap, in particular along a (respective) direction of extent. It may be particularly preferred that the at least one longitudinal rib is preferably formed parallel and / or aligned with the at least one reinforcing rib. As a result, the at least one longitudinal rib can increase the rigidity perpendicular to a suction direction and / or from top to bottom. Due to the preferably lower rigidity of the longitudinal rib (compared to the at least one reinforcing rib), the elasticity can be increased and / or rigidity (at this point) can be reduced. This can advantageously lead to improved sealing at the closing edge, in particular on the left and / or right.The at least one oblique rib, the at least one transverse rib, the at least one reinforcing rib and / or the longitudinal rib can preferably be designed radially, spoke-like, concentrically and / or star-shaped from a midpoint and / or center of the closure flap (similar to sun rays). Their orientation can preferably be designed depending on the, in particular planar, shape of the closure flap. As a result, the rigidity (and / or flexibility) of the closure flap can be designed to be as uniform as possible and / or to decrease (and / or increase) as far as possible towards the (closing) edge. This can advantageously improve the conformability of the closure flap, in particular of the closing edge. It can be provided that a left and / or right oblique rib is designed to be substantially angled, in particular relative to the groove, the leading edge, the at least one reinforcing rib, transverse rib and / or longitudinal rib.An angle can be, for example, between 10° and 80°, for example between 20° and 70°, in particular between 30° and 60°, preferably between 40° and 50°, ideally (essentially) 45°.

[0086] The (at least one) longitudinal rib and / or at least one diagonal rib can be arranged in the lower, middle and / or upper section. Preferably, the (at least one) longitudinal rib and / or at least one diagonal rib can be formed in the middle section, which advantageously best improves the (overall) stability. An arrangement of the (at least one) longitudinal rib and / or at least one diagonal rib over the (entire) lower, middle and / or upper section can advantageously enable particularly high stability, robustness and / or rigidity (in the relevant section) of the closure flap. The (at least one) longitudinal rib and / or at least one diagonal rib can extend over the entire width or dimension of the closure flap or, preferably, only partially.The closure flap can be designed as a whole, in particular parallel and / or perpendicular to the groove, to be rigid and / or stiffened, and in particular to be pivotable. Alternatively, it can also be provided that the (at least one) longitudinal rib and / or at least one oblique rib are designed in the lower, middle and / or upper section, but preferably not in the upper, middle and / or lower section. Advantageously, the section in which the (at least one) longitudinal rib and / or at least one oblique rib is arranged can be stiffer than a section in which no (or fewer) longitudinal and / or oblique ribs are arranged. Alternatively, it can also be provided that the (at least one) longitudinal rib and / or at least one oblique rib are designed in the middle and / or upper section, but preferably not in the lower and / or middle section.As a result, the middle and / or upper section can advantageously have greater rigidity, but in particular can at the same time be designed to be more elastic or less rigid than the lower section, in which at least one (stiffer) reinforcing rib is preferably formed. This can advantageously enable improved opening, closing and / or sealing. The upper section, in particular a closing edge of the closure flap (in the upper section), which in particular opens first and closes last, can be designed to be (relatively) elastic. As a result, suction material can pass through (here) more easily, even if the closure flap is already (partially) closing. This can prevent jamming and prevent suction material from being removed, falling out and / or trickling out.Alternatively or additionally, this can advantageously lead to (nevertheless) jammed suction material being flush enclosed by the closing edge (in this upper section), whereby a seal can preferably be formed around the jammed suction material, which advantageously increases the seal (overall).

[0087] The at least one longitudinal rib can be arranged substantially centrally, in particular parallel to the groove, leading edge, transverse rib (transverse direction) and / or from top to bottom. For example, the at least one longitudinal rib(s) can be arranged, preferably evenly distributed, in the middle quarter, the middle third, the middle half, the middle two-thirds, and / or the middle 80% of the closure flap. A (relatively) central arrangement increases rigidity in the center and / or enables particularly high elasticity (and improved sealing) at the closing edge. A (relatively) distributed and / or external (left or right) arrangement increases rigidity over a larger area, in the edge region and / or to the left or right. This allows the width of the elastic closing edge to be fixed and / or "adjusted." It can be provided that a longitudinal rib is arranged in alignment with a reinforcing rib.In particular, a longitudinal rib can arise from a reinforcing rib or vice versa.

[0088] Furthermore, it can be provided within the scope of the invention that the closure flap has a connecting section, in particular in a lower section of the closure flap, wherein the connecting section is designed to fasten the closure flap to a holding plate of a filter bag, in particular to a nozzle of the holding plate.

[0089] The connecting section can be configured to pivotably and / or rotatably mount the closure flap. The connecting section can be configured to arrange and / or fasten the closure flap to the nozzle and / or collar, in particular in an irreversibly detachable manner, preferably by means of a material bond. This can advantageously enable simple, robust and / or cost-effective production, for example by means of an injection molding process, transfer molding process and / or vulcanization. The connecting section can have a leading edge (or vice versa) and / or be arranged adjacent to this. The connecting section can preferably be arranged along the edge of the closure flap, preferably in sections.The length of the connecting section is preferably short compared to the edge of the closure flap, in particular between 0.1% and 50%, for example between 1% and 40%, preferably between 3% and 30%, particularly preferably between 4% and 20%, ideally between 8% and 15%. A longer length can provide greater robustness and / or durability. A shorter length can enable easier opening and / or closing. The remaining length of the closure flap can have a closing edge, which can preferably seal the closure flap against the nozzle (as well as possible). An (increased) elasticity of the closing edge can enable the closing edge to "snuggle" against (jammed) suction material. This can improve the seal (despite jammed suction material), and in particular prevent unwanted removal of suction material or trickling out (e.g., dirt particles) from the filter bag.Alternatively or additionally, this can enable a "free suction", in particular by means of a higher suction level, whereby jammed suction material can be removed from the elastic closing edge.

[0090] The above object is achieved according to a third aspect by a vacuum cleaner according to the invention having a vacuum cleaner-side holding socket which is designed to enable a filter bag, in particular according to the first aspect, to be arranged on the vacuum cleaner-side holding socket.

[0091] The vacuum cleaner can accommodate the filter unit, which can in particular be arranged on or in the vacuum cleaner. In this case, a vacuum cleaner can have a suction fan, which can be operated, for example, by an electric motor. In this case, the vacuum cleaner can have a battery, in particular an accumulator, as the energy source for driving the electric motor, and can in particular be designed to be cordless or cable-free. Alternatively or additionally, the vacuum cleaner can be connected to a power and / or voltage network for energy supply. Preferably, the holding socket on the vacuum cleaner side is designed to fasten the holding plate and / or the socket to it, preferably in a reversibly detachable manner. The vacuum cleaner can have a filter bag detection unit, which preferably interacts with a filter bag detection element of the filter bag.The filter bag detection element can be configured to be recognized and / or detected by the filter bag detection unit using sensors, for example, optically, inductively, and / or capacitively. For example, the filter bag detection element can be configured as an (electrically conductive) coil into which the filter bag detection unit can induce a current and / or measure a resulting magnetic field.

[0092] This results in the same advantages with regard to a vacuum cleaner according to the invention according to the third aspect as have already been described with regard to a filter bag according to the invention according to the first aspect and / or a closure flap according to the invention according to the second aspect.

[0093] Within the scope of the invention, it is optionally possible for the vacuum cleaner-side retaining piece for arranging a filter bag to have a reversibly detachable fastening device, in particular a rail, a thread, and / or a click connection.

[0094] The above object is achieved according to a fourth aspect by a system according to the invention comprising a vacuum cleaner, preferably according to the third aspect, with a vacuum cleaner-side holding nozzle and a filter bag, preferably according to the first aspect, wherein the filter bag has a filter material for receiving vacuumed material and a holding plate for arranging on the vacuum cleaner-side holding nozzle.

[0095] The vacuum cleaner and the filter bag can work synergistically together (see above). In particular, the vacuum cleaner's fan can suck in debris, which can then be trapped in the filter bag. The flap can be used to seal the bag, ideally preventing debris from escaping from the filter bag.

[0096] This results in the same advantages with regard to a system according to the invention according to the fourth aspect as have already been described with regard to a filter bag according to the invention according to the first aspect and / or a closure flap according to the invention according to the second aspect and / or a vacuum cleaner according to the invention according to the third aspect.

[0097] Further advantages, features, and details of the invention will become apparent from the following description, in which several embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description may be essential to the invention individually or in any combination. Fig. 1a filter bag Fig. 2a filter bag Fig. 3a nozzle with a closing flap Fig. 4a closing flap Fig. 5an open closing flap with (collapsed) reinforcing ribs Fig. 6an open closing flap in side view Fig. 7a closing flap without ribs in the upper section Fig. 8a closing flap with (star-shaped) ribs in the upper section Fig. 9a filter bag with filter material Fig. a nozzle 10 Fig. 11a nozzle Fig. 12 13a nozzle, and Fig. a closing flap which is jammed by suction material.

[0098] In the following figures, identical reference numerals are used for the same technical features, even for different embodiments.

[0099] Figure 1shows a filter bag 100. A holding plate 20 is shown, on which a nozzle 21 is arranged. By way of example, the holding plate 20 has a counter nozzle on which the nozzle 21 can be arranged. The holding plate 20 also has a handle part 23, which is pivotably arranged on the holding plate 20 via a film hinge 23.1. The nozzle 21 has a longitudinal axis 21.1, along which the nozzle 21 (essentially) extends. The nozzle 21 has a collar 24, on which a filter material 10 can be arranged. The nozzle 21 preferably has a closure flap 30, which can be pivotally mounted on the nozzle 21. In the present case, the closure flap 30 comprises a longitudinal rib 33.1, which is cut away in the illustration. In addition, the closure flap 30 comprises a transverse rib 32.1 and / or a reinforcing rib 32.1.

[0100] Figure 2 shows a filter bag 100, especially in reference to Figure 1. Here, a holding plate 20 is shown, on which a nozzle 21 is arranged. The holding plate 20 also has a handle part 23, which is pivotally arranged on the holding plate 20 via a film hinge 23.1. The nozzle 21 has a longitudinal axis 21.1, along which the nozzle 21 (essentially) extends. In the present case, an angle 21.2 is formed essentially vertically. However, other configurations are conceivable (see above and / or Figures 10, 11, 12 ). The nozzle 21 has a collar 24 on which a filter material 10 can be arranged. The nozzle 21 preferably has a closure flap 30, which can be pivotally mounted on the nozzle 21. In the present case, the closure flap 30 comprises a longitudinal rib 33.1, which is cut away in the illustration.

[0101] Figure 3shows a closure flap 30, which can be pivotally mounted on the nozzle 21. The closure flap 30 comprises in the present case a (for example L-shaped) connection section 31.6, via which in particular the closure flap 30 can be connected to the nozzle 21, for example by means of a material bond, adhesive bonding and / or welding. Furthermore, the closure flap 30 can have a leading edge 31.5, which in the present case is directly connected to a groove 31.1 and / or merges into it. The groove 31.1 can form a defined kink point, along which the closure flap 30 (in the present case Figure 3upwards). The at least one reinforcing rib 31.2, 31.3, 31.4 (not shown here) can generate a restoring force and / or closing force which preferably closes the closure flap 30 and / or keeps it closed (in a sealed manner). The closure flap 30 can have a lower section 31, a middle section 32, and / or an upper section 33. A groove 31.1, a leading edge 31.5 and / or a connecting section 31.6 can be arranged in the lower section 31. A transverse rib 32.1 can be arranged in the middle section 32, which can in particular increase the rigidity of the closure flap 30 (along this direction). In this case, an oblique rib 33.2, 33.3, in particular a right oblique rib 33.3, can be arranged in the upper section 33, which can in particular increase the rigidity of the closure flap 30 (along this direction).

[0102] Figure 4shows a closure flap 30, which can be pivotably mounted on the nozzle 21. Also shown is a collar 24 of the nozzle 21. The closure flap 30 comprises a leading edge 31.5, which is directly connected to a groove 31.1 and / or merges into it. The groove 31.1 can form a defined kink point along which the closure flap 30 (in this case Figure 4out of the image plane). The at least one reinforcing rib 31.2, 31.3, 31.4 can generate a restoring force and / or closing force which preferably closes the closure flap 30 and / or keeps it closed (in a sealed manner). The closure flap 30 can have a lower section 31, a middle section 32, and / or an upper section 33. A groove 31.1, a leading edge 31.5 and / or a connecting section 31.6 can be arranged in the lower section 31. A transverse rib 32.1 can be arranged in the middle section 32, which can in particular increase the rigidity of the closure flap 30 (along this direction). In this case, a diagonal rib 33.2, 33.3, in particular a left diagonal rib 33.2 and / or a right diagonal rib 33.3, can be arranged in the upper section 33, as well as optionally a longitudinal rib 33.1, which can in particular (in each case) increase the rigidity of the closure flap 30 (along this direction). For example, the directions "top," "bottom," "left," and / or "right" can be used for orientation or illustration. For example, the at least one reinforcing rib 31.2, 31.3, 31.4 extends from bottom to top.

[0103] Figure 5 shows, especially in reference to Figure 4, a closure flap 30, which has at least one reinforcing rib 31.2, 31.3, 31.4. For example, the at least one reinforcing rib 31.2, 31.3, 31.4 (each) is collapsed, kinked, and / or bent, in particular along and / or due to an underlying groove 31.1, preferably upon opening and / or in the open state of the closure flap 30. Due to the deformation, the at least one reinforcing rib 31.2, 31.3, 31.4 can provide a restoring force, which can preferably (quickly) close the closure flap 30, in particular when the vacuum cleaner 200 is switched off.

[0104] Figure 6 shows, especially in reference to Figure 5, a closure flap 30 which is at least partially open. A side view is shown. The closure flap 30 can comprise an elastic material and / or be designed as a single piece (as an injection-molded part, preferably made of plastic). Accordingly, the closure flap 30 can be configured to bend (reversibly), in particular to enable and / or reinforce opening.

[0105] Figure 7 shows a closure flap 30. The closure flap 30 comprises in the present case a connecting section 31.6, via which in particular the closure flap 30 can be connected to the nozzle 21, for example, by means of a material bond, adhesive bonding and / or welding. Furthermore, the closure flap 30 can have a leading edge 31.5, which in the present case is directly connected to a groove 31.1 and / or merges into it. The groove 31.1 can form a defined kink point along which the closure flap 30 (in the present case Figure 7out of the image plane). The at least one reinforcing rib 31.2, 31.3, 31.4 can generate a restoring force and / or closing force which preferably closes the closure flap 30 and / or keeps it closed (in a sealed manner). The closure flap 30 can have a lower section 31, a middle section 32, and / or an upper section 33. A groove 31.1, a leading edge 31.5 and / or a connecting section 31.6 can be arranged in the lower section 31. A transverse rib 32.1 can be arranged in the middle section 32 and / or upper section 33, which can in particular increase the rigidity of the closure flap 30 (along this direction). No rib can be provided in the upper section 33. As a result, the flexibility can advantageously be increased and / or the rigidity reduced in this section.This can optimise sealing, clinging (to potentially jammed suction material), closing, opening and / or suctioning out.

[0106] Figure 8 shows a closure flap 30. The closure flap 30 comprises in the present case a connecting section 31.6, via which in particular the closure flap 30 can be connected to a nozzle 21, for example, by means of a material bond, adhesive bonding and / or welding. Furthermore, the closure flap 30 can have a leading edge 31.5, which in the present case is directly connected to a groove 31.1 and / or merges into it. The groove 31.1 can form a defined kink point along which the closure flap 30 (in the present case Figure 8out of the image plane). The at least one reinforcing rib 31.2, 31.3, 31.4 can generate a restoring force and / or closing force which preferably closes the closure flap 30 and / or keeps it closed (sealed). The closure flap 30 can have a lower section 31, a middle section 32, and / or an upper section 33. A groove 31.1, a leading edge 31.5 and / or a connecting section 31.6 can be arranged in the lower section 31. A transverse rib 32.1 can be arranged in the middle section 32, which can in particular increase the rigidity of the closure flap 30 (along this direction). In the present case, the transverse rib 32.1 is interrupted (in the middle). This can increase the flexibility (compared to a continuous transverse rib). In the upper section 33, a diagonal rib 33.2, 33.3, in particular a left diagonal rib 33.2 and / or a right diagonal rib 33.3, as well as optionally a longitudinal rib 33.1, which can in particular (each) increase the rigidity of the closure flap 30 (along this direction). The ribs 32.1, 33.1, 33.2, 33.3 in the middle section 32 and / or upper section 33 can be "weaker", narrower (less width), and less high (less height from the image plane), particularly compared to the "reinforced" reinforcing ribs 31.2, 31.3, 31.4. This can optimize sealing, conforming (to potentially jammed suction material), closing, opening, and / or suction removal. Alternatively or additionally, the ribs 32.1, 33.1, 33.2, 33.3 in the middle section 32 and / or upper section 33 can be arranged radially and / or in a star shape. This allows a particularly good compromise between rigidity, in particular in the center of the closure flap 30, and / or flexibility, in particular at or near an outer (closing) edge of the closure flap 30.

[0107] Figure 9shows a filter bag 100, comprising a holding plate 20 with a handle 23 (for pulling the filter bag 100 out of a holding socket on the vacuum cleaner side). A filter material 10 of the filter bag 100 can be arranged, for example glued and / or welded, on the holding plate 20 and / or (preferably) on a socket 21 (not shown). A filter ring 10.1 of the filter bag 100 can optimize arrangement, in particular fastening, for example with a fastening means. The filter ring 10.1 can be connected to the filter material 10. The filter ring 10.1 can then be arranged on the socket 21 (see above). The filter material 10 can define or enclose an interior space 11. Vacuum material 1, which was preferably sucked up by a vacuum cleaner comprising the filter bag 100, can be received therein.In this case, in particular when operating the vacuum cleaner, a suction direction 2 can be formed and / or defined, along which preferably air and / or suction material can be (essentially) transported.

[0108] Figure 10 shows a nozzle 21 with an elliptical shape.

[0109] Figure 11 shows a nozzle 21 with a hyperbolic-paraboloidal shape. Preferably, the nozzle can have an undercut 22 and / or a groove. A filter material can be arranged at, on, and / or around the undercut 22.

[0110] Figure 12shows a nozzle 21 with a curved shape. The nozzle 21 can therefore be designed as an angled pipe. Preferably, the nozzle can have an undercut 22 and / or a groove. A filter material can be arranged on, at, and / or around the undercut 22. In particular, it can be provided that the nozzle 21 is non-cylindrical (cf. Figures 10, 11, 12 ).

[0111] Figure 13 shows a nozzle 21, which has an (at least partially) open closure flap 30. However, the closure flap 30 can be blocked by suction material 1, for example cat litter (as in Figure 13), become jammed. This can be prevented according to the invention. For example, the flexibility of the closure flap 30, preferably in a (closing) edge region, can be increased and / or the rigidity reduced. This can enable it to conform to the jammed suction material 1. Alternatively or additionally, jamming can be prevented (from the outset), in particular by closing the closure flap 30 more quickly. The jammed suction material 1 can also be released by suction. List of reference symbols

[0112] 1Suction material 2Suction direction 10Filter material 10.1Filter ring 11Interior 20Retaining plate 21Connector 21.1Longitudinal axis 21.2Angle 22Undercut 23Handle 23.1Film hinge 24Collar 30Closing flap 31Lower section 31.1Groove 31.2Reinforcing rib 31.3Reinforcing rib 31.4Reinforcing rib 31.5Leading edge 31.6Connecting section 32Middle section 32.1Cross rib 33Upper section 33.1Longitudinal rib 33.2(left) diagonal rib 33.3(right) diagonal rib 40Seal 100Filter bag 200Vacuum cleaner 220Retaining connector

Claims

1. Filter bag (100), in particular for a vacuum cleaner (200), comprising a filter material (10) for receiving suction material (1) and a holding plate (20) for arranging on a holding nozzle (220) on the vacuum cleaner side.

2. Filter bag (100) according to claim 1, characterized by thatthe holding plate (20) has a nozzle (21) on which the filter material (10) is arranged, wherein the nozzle (21) preferably has a non-cylindrical shape, and / or that the holding plate (20) has a nozzle (21) to which the filter material (10) is fastened by a fastening means, in particular an adhesive connection and / or a welded connection, and / or that the holding plate (20) has a nozzle (21), wherein the nozzle (21), in particular a longitudinal axis (21.1) of the nozzle (21), is designed to be angled relative to the holding plate (20), wherein in particular an angle (21.2) between the holding plate (20) and the nozzle (21), in particular between the holding plate (20) and a longitudinal axis (21.1) of the nozzle (21), is designed to be acute or blunt.

3. Filter bag (100) according to one of the preceding claims, characterized by thatthe holding plate (20) has a nozzle (21), wherein the nozzle (21) has an undercut (22) at least in sections, in order to preferably enable improved fastening of the filter material (10) to the nozzle (21), and / or that the holding plate (20) has a nozzle (21), wherein the holding plate (20) and / or the nozzle (21) has at least in sections a counter-rail, a counter-thread, and / or a counter-click connection, which can be arranged in particular on a rail, a thread, and / or a click connection of a vacuum cleaner-side holding nozzle (220).

4. Filter bag (100) according to one of the preceding claims, characterized by thatthe filter bag (100) has a seal (40), wherein the seal (40) is arranged between the filter material (10) and the holding plate (20), in particular between the filter material (10) and a nozzle (21) of the holding plate (20), and / or that the filter bag (100) has a closure flap (30) which is arranged on the holding plate (20), or in particular on a nozzle (21) of the filter bag (100), wherein preferably the closure flap (30) is designed to prevent removal of suction material (1) from the filter bag (100).

5. Closure flap (30) for a filter bag (100), in particular for a vacuum cleaner (200), wherein the closure flap (30) is designed to open or close the filter bag (100).

6. Closure flap (30) according to one of the preceding claims, characterized by thatthe closure flap (30) is designed to be movable, in particular pivotable, relative to the filter bag (100), in particular to a filter material (10), a holding plate (20) and / or a nozzle (21) of the filter bag (100).

7. Closure flap (30) according to one of the preceding claims, characterized by that the closure flap (30) is designed to open into an interior space (11) of the filter bag (100), and / or that the closure flap (30), in particular in sections, comprises an elastic material, and / or that the closure flap (30) is designed in one piece, in particular of the same material, and in particular has a one-piece and / or integrated closure mechanism.

8. Closure flap (30) according to one of the preceding claims, characterized by thatthe closure flap (30) has a groove (31.1), in particular in a lower section (31) of the closure flap (30), wherein the groove (31.1) is designed to facilitate opening and / or closing of the closure flap (30), in particular relative to the holding plate (20), and / or that the closure flap (30) has a leading edge (31.5), in particular in a lower section (31) of the closure flap (30), wherein the leading edge (31.5) is designed to support the closure flap (30) against the holding plate (20), in particular against a connecting piece (21) of the holding plate (20).

9. Closure flap (30) according to one of the preceding claims, characterized by thatthe closure flap (30) has at least one reinforcing rib (31.2, 31.3, 31.4), in particular in a lower section (31) of the closure flap (30), and / or that the closure flap (30) has a transverse rib (32.1), in particular in a central section (32) of the closure flap (30), wherein the transverse rib (32.1) is preferably interrupted in the middle.

10. Closure flap (30) according to one of the preceding claims, characterized by that the closure flap (30), in particular in an upper section (33) of the closure flap (30), has a longitudinal rib (33.1) and / or at least one oblique rib (33.2, 33.3), in particular a left oblique rib (33.2) and / or a right oblique rib (33.3).

11. Closure flap (30) according to one of the preceding claims, characterized by thatthe closure flap (30) has a connecting section (31.6), in particular in a lower section (31) of the closure flap (30), wherein the connecting section (31.6) is designed to fasten the closure flap (30) to a holding plate (20) of a filter bag (100), in particular to a nozzle (21) of the holding plate (20).

12. Filter bag (100) according to one of the preceding claims, characterized by that the filter bag (100) has a closure flap (30) according to one of the preceding claims.

13. Vacuum cleaner (200) comprising a vacuum cleaner-side holding piece (220) which is designed to enable a filter bag (100), in particular according to one of the preceding claims, to be arranged on the vacuum cleaner-side holding piece (220).

14. Vacuum cleaner (200) according to the preceding claim, wherein the vacuum cleaner-side holding piece (220) for arranging a filter bag (100) has a reversibly detachable fastening device, in particular a rail, a thread, and / or a click connection.

15. System comprising a vacuum cleaner (200) with a vacuum cleaner-side holding nozzle (220) and a filter bag (100) according to one of the preceding claims, wherein the filter bag (100) has a filter material (10) for receiving suction material (1) and a holding plate (20) for arranging on the vacuum cleaner-side holding nozzle (220).

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