Dust collecting filter bag device

Abstract

The invention relates to a filter bag device (10) for a vacuum cleaner (70), wherein the filter bag device (10) can be arranged in a vacuum cleaner intake chamber (78) of the vacuum cleaner and has a filter bag (11) with a dust intake chamber (13) for collecting dust (S), wherein the filter bag (11) consists at least partially of a filter material (12) through which air can flow and which retains dust (S) in the dust intake chamber (13), wherein the filter bag device (10) has a bag inlet (20) connectable to a suction inlet of the vacuum cleaner, which is provided for the flow of a suction stream (SM) loaded with dust (S) into the dust intake chamber (13), wherein a bag outlet (25) for emptying dust (S) from the dust intake chamber (13) is arranged at an outlet area of ​​the filter bag (11), and wherein the filter bag device (10) has a closing device (30) for closing the bag outlet (25).The closure device (30) comprises a hose body (31) arranged at the bag outlet (25), which has a hose outlet (32) flow-connected to the bag outlet (25) for emptying dust (S) from the dust collection chamber (13), wherein the hose body (31) extends along a longitudinal extension (L) between the bag outlet (25) and the hose outlet (32) and has a winding section (33) between the bag outlet (25) and the hose outlet (32), which can be wound from a passage position (D) provided for emptying the dust (S) from the dust collection chamber (13) and unwound, in particular elongated, along a winding path into a winding position (W) closing the bag outlet (25) towards the bag outlet (25) to a winding (34).

Description

[0001] The invention relates to a filter bag device for a vacuum cleaner, wherein the filter bag device can be arranged in a vacuum cleaner intake chamber of the vacuum cleaner and has a filter bag with a dust intake chamber for collecting dust, wherein the filter bag consists at least partially of a filter material through which air can flow and which retains dust in the dust intake chamber, wherein the filter bag device has a bag inlet connectable to a suction inlet of the vacuum cleaner, which is provided for the flow of a dust-laden suction stream into the dust intake chamber, wherein a bag outlet for emptying dust from the dust intake chamber is arranged at an outlet area of ​​the filter bag, and wherein the filter bag device has a closing device for closing the bag outlet.

[0002] The applicant manufactures and supplies reusable filter bag devices of this type. When dust has accumulated in the dust collection chamber, the filter bag can be emptied via the bag outlet. The bag outlet can be closed using a clamping rail. However, operating such a clamping rail requires a certain level of dexterity.

[0003] It is therefore the object of the present invention to propose an improved filter bag device.

[0004] To solve the problem, a filter bag device of the type mentioned above is provided in that the closing device comprises a hose body arranged at the bag outlet, which has a hose outlet connected to the bag outlet for emptying dust from the dust collection chamber, wherein the hose body extends along a longitudinal extent between the bag outlet and the hose outlet and has a winding section between the bag outlet and the hose outlet, which can be wound from a passage position provided for emptying the dust from the dust collection chamber and unwound, in particular an elongated, along a winding path into a winding position closing the bag outlet.

[0005] Preferably, the closure device has a winding-fixing device for fixing the winding in the winding position, wherein the winding-fixing device in a fixing position counteracts an unwinding of the winding in the direction of the passage position and in a release position releases the winding to an unwinding of the winding into the passage position.

[0006] The winding securing device can form wholly or partially an integral part of the filter bag assembly. It is also possible for the winding securing device to form wholly or partially an integral part of the suction device. For example, the suction device's receiving chamber may be equipped with clamping contours or other retaining means to hold the winding in the wound position. It is also possible for the suction device to be multi-part, meaning that, for example, a lid is provided to close the suction device's receiving chamber, and the winding can be secured in the wound position by the lid. For example, a receptacle for the winding may be provided, which is closed by the lid of the suction device's receiving chamber. The lid may, for example, contain a suction unit of the suction device.For example, the lid can be designed as the upper part of the suction device, while the suction device receiving chamber and, in particular, the suction inlet of the suction device are located on the lower part or lower housing part of the suction device.

[0007] A connecting adapter for connection to the suction inlet of the suction device is preferably provided at the bag inlet of the filter bag.

[0008] The connection adapter can also be described or viewed as a connecting element.

[0009] The connecting adapter advantageously has a wall body that is particularly flat and / or particularly stiffer than the filter material, with a through-opening designed as a plug-in fitting into which a pipe body flow-connected to the suction inlet of the suction device can be inserted.

[0010] For example, when the filter bag device is mounted on the vacuum cleaner, the passage opening is connected to the suction inlet in the flow direction and / or is opposite the suction inlet, so that a suction flow generated by the vacuum motor or the suction flow through the suction inlet can flow into the bag inlet and thus into the dust collection chamber.

[0011] The wall body is designed, for example, as a ring body. The wall body is designed, for example, as a flange body or has a flange.

[0012] The passage opening of the wall body or the insertion opening is, for example, surrounded by a narrow side of the wall body. The narrow side of the wall body is at an angle to a flat side of the wall body or to a side of the wall body with its largest surface area. The narrow side preferably forms an end face opposite a circumferential wall of the pipe body when the wall body or connecting adapter is arranged on the pipe body.

[0013] For example, one insertion direction for the pipe body is at an angle, in particular at approximately a right angle or exactly at a right angle, to a flat side of the wall body.

[0014] A sealing element and / or a membrane is preferably arranged at the through-opening of the connecting adapter or wall body to form a tight seal against the pipe body of the suction device. For example, the sealing element or membrane projects in front of an inner circumferential contour of the through-opening and defines a through-opening to the end of the pipe body. The sealing element or membrane rests against the pipe body with its narrow side, or is designed and configured to rest against the pipe body with its narrow side.

[0015] The connecting adapter, in particular its body, comprises, for example, guide contours or retaining contours for engagement with adapter contours of the suction device. Advantageously, the retaining contours or guide contours are pluggable into the adapter contours of the suction device. The guide contours or retaining contours can, for example, comprise guide projections, guide grooves, retaining projections, retaining grooves, or similar other guide or retaining structures.

[0016] For example, the adapter contours of the suction device are designed to engage with a plug-in receptacle for the connecting adapter. This plug-in receptacle can be mounted on a movable holder, which is movably mounted towards and away from the suction inlet, in particular by pivoting. Thus, the connecting adapter can first be positioned on the movable holder, with the adapter contours and guide contours engaging with each other. Subsequently, the holder, with the connecting adapter mounted on it, can be adjusted towards the suction inlet so that the pipe body or nozzle of the suction inlet engages in the opening of the connecting adapter.

[0017] Furthermore, it is possible that the connecting adapter has locking contours or locking devices, for example at least one locking projection and / or at least one locking receptacle, for locking with corresponding counter-locking contours of the suction device. Thus, for example, a plug-in assembly with locking is possible, in which the connecting adapter is inserted into a plug-in receptacle of the suction device and is locked to it by means of the locking contours or locking devices.

[0018] Advantageously, a suction device is provided with a filter bag device according to the invention.

[0019] The filter bag device is specifically designed and / or intended for use on the vacuum cleaner and for placement in the vacuum cleaner's intake space.

[0020] The filter bag device, for example, does not have shoulder straps or carrying straps for carrying it. In particular, the filter bag device does not have shoulder straps or carrying straps intended for carrying on an operator's back. Preferably, the filter bag device is not designed or intended for carrying in the manner of a backpack.

[0021] The filter bag device preferably does not have a separate carrying aid for the filter bag device, either independent of the closure device or protruding from the filter bag itself. However, it will become clear in the following description that the closure device can be further developed into a carrying aid or used as such. Thus, the closure device can advantageously be the only carrying aid designed and provided for carrying the filter bag device, and may be configured in the form of a loop or handle.

[0022] A fundamental concept of the present invention is that the winding section is wound up in order to close the bag outlet at least to the extent that suction operation is possible. In particular, it is advantageous if the bag outlet is so completely closed by the winding that, during suction operation, at least 95%, preferably at least 98%, and more preferably at least 99% of the suction flow passes over the filter material of the filter bag and cannot escape through the bag outlet.

[0023] The wrap can be created, for example, by rolling up the wrap section. It is preferred if the wrap is created, or can be created, starting from the suction outlet, by rolling or folding the wrap section.

[0024] The coil as defined in the invention is, for example, a coil formed by rolling or folding to create a roll. However, a coil formed by folding, such as a fan, can also constitute a coil as defined in the invention. In this case, several layers of the coil section are stacked on top of each other, with the layers lying flat against one another. Layers lying on top of each other can also be formed by rolling up the coil section.

[0025] The winding therefore has at least 2, preferably 3 or 4 superimposed layers of the tube body or winding section, formed, for example, by rolling or folding the winding section on top of each other.

[0026] In the coiled position, the coil preferably has at least two, more preferably at least three, and even more preferably at least four or at least five, superimposed layers of the tube body. For example, the coil can be produced by winding with 2-3 or 3-4 turns and / or folding with 2-3 or 3-4 folds. Just a few coiling operations are sufficient to form a coil that seals the bag outlet with a tightness suitable for suction operation. Each layer of the tube body can, for example, comprise two superimposed walls of the tube body.

[0027] The coil can be fixed in place, for example, by appropriate positioning within the vacuum cleaner's intake chamber, so that it does not unwind or unravel towards the outlet, or not to an undesirable extent, allowing dust to flow out through the bag and hose outlets. For instance, appropriate positioning of the filter bag mechanism within the vacuum cleaner's intake chamber can be suitable for fixing the coil in its coiled position.

[0028] In the following explanation of the winding and securing device, all or some parts of the winding and securing device can form part of the suction device, and other parts of the winding and securing device can form part of the filter bag assembly. For example, locking mechanisms can be provided, one locking component of which is located on the suction device and the other locking component on the filter bag assembly.

[0029] An advantageous embodiment of the invention provides that the winding fixing device has at least one fastening element, e.g. arranged on the hose body, which can be connected to at least one counter-fastening element for fixing the winding.

[0030] The fastening element is, for example, permanently and / or captive attached to the hose body.

[0031] The fastening element is, for example, fixed or flexible to the hose body. The fastening element can be designed and / or configured for a snap-fit, hook-and-loop, clamp, or similar fastening mechanism. The counter-fastening element is designed to cooperate with the fastening element, for example, also for a snap-fit, hook-and-loop, or clamp fastening mechanism.

[0032] It should be mentioned here that the at least one fastening element and the at least one counter-fastening element can be designed and suitable for different types of fastening, and these can also be used in combination.

[0033] For example, the wrapping fastening device can be designed as a clamp fastening and / or a snap fastening. The wrapping fastening device can, for example, include a snap-in element that functions in combination with an additional clamp fastening element and / or hook-and-loop fastener.

[0034] For example, a strap may be provided that is tensionable, with a buckle or similar other fastening element for a snap-fit ​​and / or plug-in fixation with a counter-fastening element also provided on the strap.

[0035] Preferably, the counter-fastening element is arranged on the hose body or is arranged or can be arranged on the suction device.

[0036] The counter-fastening element can be fixed or detachably arranged, for example, within the suction device's receiving chamber. In the locked position, the fastening element and the counter-fastening element engage with each other, for example, in a locking and / or clamping engagement. The counter-fastening element can be permanently attached to the suction device, particularly within its receiving chamber. For example, a locking receptacle, clamping receptacle, or similar device can be provided as the counter-fastening element within the interior of the suction device and / or its receiving chamber.

[0037] Particularly preferred, and explained in more detail in the illustrated embodiment, is the counter-fastening element, which is arranged on the hose body. Thus, both the counter-fastening element and the fastening element are advantageously arranged on the hose body.

[0038] It should be noted that, of course, multiple pairs of fasteners and counter-fasteners can be provided for in the winding fixing device. However, a single pair of fasteners and counter-fasteners is also sufficient.

[0039] An advantageous embodiment of the invention provides that the fastening element and / or the counter-fastening element is arranged on a tab located on the hose body, which, in particular in the direction of a winding axis around which the winding is wound or is to be wound, projects in front of the winding or can be brought from the winding section or into a position projecting in front of or away from the winding.

[0040] One or both of the fastening element or counter-fastening element are advantageously arranged on a tab, i.e., on an element that projects forward of the winding or can be brought into a position projecting forward of the winding. The fastening element and the counter-fastening element can thus each be arranged on a tab. The tab can be a flexible or movable tab that allows the fastening element or counter-fastening element arranged on the tab to move in order to enable or facilitate engagement with the other fastening element or counter-fastening element. For example, when arranged on the tab, the fastening element allows it to engage with the counter-fastening element.

[0041] For example, the counter-fastening element can be located on the filter bag or on the suction device intake chamber.

[0042] For example, only the fastening element is arranged on a tab, in particular on a tab that is arranged on the hose body.

[0043] It is particularly advantageous if the fastener and the mating fastener are each arranged on a tab. This makes it especially easy to engage the fastener and the mating fastener.

[0044] The tab preferably projects forward of the winding in the direction of a winding axis around which the winding is wound in the winding position. However, the tab can also be arranged on the tube section such that, in the winding position, it extends in the direction of the longitudinal extent of the tube section and / or transversely to the winding axis around which the winding is wound, and can extend, for example, towards the filter bag, particularly the bag outlet. For instance, the winding can have a cylindrical shape, which is held in its winding position or cylindrical shape by the tab that encircles or partially encircles the winding.

[0045] Preferably, a tab is arranged on opposite sides of the tube body, particularly the winding section, one of which carries the fastening element and the other the counter-fastening element. For example, it is advantageous if the tabs are arranged on a free longitudinal end region of the winding section, away from the bag outlet, particularly in the area of ​​the tube outlet.

[0046] The at least one tab can preferably be adjusted to a position directed towards the center of the winding and / or the tube body. In particular, the tab is flexible or bendable. The tab can, for example, consist of or have a textile fabric.

[0047] Preferably, the fastening element and the counter-fastening element are arranged on the hose body and are engaged with each other in the fixing position of the winding fixing device, wherein at least one of the fastening element or counter-fastening element is adjusted in the direction of a longitudinal center of the winding transverse to the longitudinal extent of the hose body.

[0048] An advantageous embodiment provides that the maximum transverse width of the bag outlet, when the walls of the filter bag limiting the bag outlet lie on top of each other and, in particular, when the bag outlet forms a narrow slot extending in a longitudinal direction, is a maximum of 80%, more preferably a maximum of 70%, and more preferably a maximum of 60% of the distance between the fastening element and the counter-fastening element, when the fastening element and the counter-fastening element are projected away from the hose body as far as possible and parallel to each other in a direction determining the maximum transverse width of the bag outlet.

[0049] The distance between the fastening element and the counter-fastening element, when the fastening element and the counter-fastening element are projected away from the tube body as far as possible and parallel to each other in a direction determining the maximum transverse width of the bag outlet, can be achieved, for example, by arranging at least one rigid or flexible extension element, in particular a flexible body or a flexible band or tab, in particular a textile band, between the fastening element and the tube body and / or between the counter-fastening element and the tube body.Therefore, it is generally possible for the maximum transverse width of the hose outlet to be smaller than or equal to the maximum transverse width of the bag outlet, or possibly a maximum of 10% or 20% larger, if the walls defining the hose outlet and the walls defining the bag outlet lie flat against each other.

[0050] However, it is preferred if the fastening element and / or the counter-fastening element, advantageously both, are arranged directly on the hose body, in particular at its hose outlet, and the maximum distance between the fastening element and the counter-fastening element, when the fastening element and the counter-fastening element are projected as far away from the hose body as possible parallel to each other in a direction determining the maximum transverse width of the bag outlet, is determined exclusively or substantially or to at least 80% or 90% by the transverse width of the hose body when its walls lie flat against each other.

[0051] The length of the winding section, particularly the entire hose outlet, in relation to its longitudinal extent or maximum longitudinal extent between the bag outlet and the hose outlet when the winding section is not wound or unwound, is preferably at least 20%, more preferably at least 30%, and even more preferably at least 40% of the maximum transverse width of the hose outlet when the walls defining the hose outlet are lying flat against each other. Preferably, the length of the winding section when it is not wound or unwound is at least 4.5 cm or 5 cm. This measure, for example, facilitates winding the winding section into the coil and / or contributes to the tightness and / or stability of the coil when wound.

[0052] However, a very long winding section is not necessary, which is why the length of the winding section is preferably at most four times, more preferably at most three times, and even more preferably at most 2.5 times the aforementioned maximum transverse width of the hose outlet. Particularly preferably, the maximum length of the unwound winding section is equal to the transverse width of the hose outlet.

[0053] A certain length of the winding section allows, for example, the production of at least one winding layer, preferably at least two winding layers, and even more preferably at least three or at least four winding layers. A single winding layer can be achieved, for example, by folding over a portion of the winding section once in one winding direction. Further winding layers can be achieved by folding over already wound winding layers again in the winding direction.

[0054] For example, the first layer of wrapping when the wrapping section is turned over for the first time has a width of 1 cm or 1.5 cm in relation to the length or longitudinal extent of the wrapping section.

[0055] A minimum length of the winding section in the unwound state is preferably at least 2.5 cm, more preferably at least 3 cm or at least 4 cm. A maximum length of the winding section is, for example, 8 cm, more preferably 6 cm, more preferably 5 cm.

[0056] It is advantageous if both the fastening element and the counter-fastening element are arranged on the hose body and can be moved towards the longitudinal center of the coil, and thus towards the opposite fastening element. However, it is also sufficient if only one of the fastening element and counter-fastening element can be moved into such a position, adjusted towards the center of the coil. This is possible, for example, if the hose material or the material of the hose body on which the fastening element or counter-fastening element is arranged is sufficiently flexible. For instance, the hose body, even when wound into the coil, can exhibit sufficient flexibility to allow the fastening element or counter-fastening element arranged on the hose body to be adjustable towards the longitudinal center of the coil.

[0057] However, it is also possible that, for example, the fastening element and / or the counter-fastening element is arranged on a aforementioned tab, so that the fastening element and / or counter-fastening element is adjustable in the direction of the longitudinal center of the coil.

[0058] A combination of tab and flexibility of the hose body is advantageous to allow the respective fastening element or counter-fastening element to be positioned towards the longitudinal center of the coil in the coil position or coiling position of the coil section.

[0059] An advantageous embodiment of the invention provides that the coil in the coiling position has or forms at least one fastening projection which, in the area of ​​the bag outlet, projects in front of the coil in the direction of a coiling axis around which the coil is wound, or can be brought into a position projecting in front of the coil.

[0060] The fastening projection can be formed, for example, by the winding itself. If the hose body has a larger circumferential wall diameter in a section located at the hose outlet than in the direction of the bag outlet, a fastening projection is created on at least one side transverse to the longitudinal extent of the hose section when the winding section is wound and / or when the winding is formed towards the bag outlet. Preferably, a fastening projection is created on both opposite longitudinal end regions of the winding, which then serves as a support for the fastening element or counter-fastening element. However, it is also possible that the fastening projection already protrudes laterally in front of the hose body or the winding section thereof in the passage position of the winding section and is merely repositioned towards the bag outlet by winding the winding.

[0061] Preferably, the at least one fastening projection is flexible or has a flexible section, such that a free end of the at least one fastening projection can be adjusted towards the center of the winding. If such a fastening projection is arranged on two opposite sides of the winding, the fastening projections can be adjusted towards each other towards the center of the winding, where, for example, combinations of fastening elements and counter-fastening elements arranged on the respective fastening projection can then engage with each other. It is possible for one of the fastening projections to be longer than the other. Preferably, the fastening projections are approximately the same length and / or can be adjusted approximately the same distance towards the center of the winding.

[0062] As already explained, the fastening projection that forms part of the wrap can, for example, be a kind of flexible tab or a flexible projection, so that it is adjustable towards the center of the wrap.

[0063] An advantageous embodiment of the invention provides that the coil in the coiling position has or forms at least one fastening projection on opposite sides, wherein at least one of the fastening projections is movable towards the other fastening projection and can be brought into holding engagement or fixing engagement with this fastening projection, wherein the fastening projections are then connected to each other.

[0064] It should be mentioned at this point that fastening protrusions arranged on opposite sides of the coil can also be intended for attachment to corresponding retaining contours in the suction device's receiving chamber. For example, a fastening element can be arranged on each of such fastening protrusions, which can engage with a counter-fastening element in the suction device's receiving chamber.

[0065] Here it proves advantageous if the mounting projection or projections are flexible, so that positioning the filter bag device in the suction device intake space is easier.

[0066] Preferably, the engaging fastening projections form a carrying handle, in particular annular or loop-shaped, for carrying the filter bag device.

[0067] The filter bag assembly can therefore be easily removed from the vacuum cleaner's dust collection chamber using the carrying handle and / or carried to a disposal point where the dust can be emptied from the dust collection chamber, such as a waste container. The loop-like or ring-shaped carrying handle ensures that the bag remains coiled, i.e., it does not come loose unintentionally. However, when the filter bag assembly is grasped by the carrying handle, a tight seal of the closure is not as critical as when the vacuum cleaner is in operation, because the dust in the dust collection chamber tends to settle away from the hose outlet and the carrying handle, thus no longer pressing against the hose outlet.

[0068] An advantageous embodiment of the invention provides that the fastening element comprises a fixing locking element and the counter-fastening element comprises a counter-locking element for locking with the fixing locking element and / or that the fastening element comprises a snap buckle and the counter-fastening element comprises a buckle receptacle for the snap buckle.

[0069] The snap buckle can advantageously comprise two lateral bars that can be adjusted relative to each other by an operating action and then disengaged from the corresponding receiving contours of the buckle receptacle, i.e., the counter-fastening element. The lateral bars of the snap buckle and the buckle receptacle, for example, have interlocking hook contours, such as hook projections and hook recesses.

[0070] Alternatively, the filter bag device can also be secured, for example, by means of a strap buckle or the like, i.e., the fastening element includes or is formed by a strap buckle, wherein a strap, in particular a textile strap, can be engaged with the strap buckle, the strap forming or being arranged as the counter-fastening element. The strap buckle has, for example, an annular, for example rectangular, frame body in which opposing side legs or frame parts are connected to each other by a bridge.

[0071] Preferably, the fastening element and / or the counter-fastening element is arranged at a longitudinal end of the hose body having the hose outlet.

[0072] However, it is possible that the fastening element and / or the counter-fastening element has a longitudinal distance from the hose outlet. Such a design is particularly advantageous if the fastening element projects in a direction transverse to the winding axis and / or parallel to the longitudinal extent of the hose section in front of the coil in its winding position.

[0073] It is advantageously provided that, in the passage position, the longitudinal distance of the fastening element and / or the counter-fastening element to the hose outlet in the direction of the longitudinal extension of the hose section is smaller than the longitudinal distance of the fastening element and / or the counter-fastening element to the bag outlet.

[0074] This measure therefore stipulates that the fastening element and / or the counter-fastening element must be located closer to the hose outlet than to the bag inlet. However, it is also possible that only one of them, namely the fastening element or only the counter-fastening element, is located closer to the hose outlet than to the bag outlet.

[0075] An advantageous embodiment of the invention provides that the winding section, in particular the tube body as a whole, consists of a material or tube material different from the filter material and / or of an air-impermeable material or tube material and / or the winding section, in particular the tube body as a whole, has a different color than the filter bag in the area of ​​the bag outlet or overall.

[0076] All the aforementioned measures advantageously provide for the hose body as a whole, or at least the winding section, to be made of a different material than the filter bag. This allows the operator to easily identify which section of the filter bag assembly needs to be wound and which does not.

[0077] Furthermore, for example, the airtight material or tubing material can improve the sealing function of the sealing device, especially the winding.

[0078] An advantageous measure provides that the winding section, in particular the tube body as a whole, is in the passage position and the filter bag extends along a longitudinal axis, wherein the tube body is shorter than the filter bag with respect to the longitudinal axis.

[0079] The tube body can therefore be significantly shorter than the filter bag. For example, the tube body is only half as long, preferably only about 30% as long, more preferably only 20% as long, and even more preferably about 15% as long as the filter bag when the tube body is in the pass-through position. The tube body thus forms, for example, a kind of extension of the filter bag that can be wound up completely or partially.

[0080] Preferably, the maximum flow cross-section of the bag outlet is smaller than the maximum flow cross-section of the hose outlet.

[0081] This configuration allows, in particular, a relatively wide and broad section of the hose body, where the hose outlet is located, to form a coil when the coil section is wound up. The central section of this coil faces the bag outlet, and a projection of the coil extends forward on one or opposite sides. This projection can be folded inwards, for example, towards the longitudinal center of the hose body or the center of the coil. Furthermore, this variant can also offer the advantage that the hose outlet provides little resistance to the dust exiting the bag outlet.

[0082] It is advantageous if the filter bag and / or the tube body and / or the winding section has a waist or narrowing towards the bag outlet or in the area of ​​the bag outlet.

[0083] Advantageously, the hose body is designed to become narrower and / or constricted from the hose outlet to the bag outlet, for example, taking on a funnel-like shape. This can result in a trapezoidal or funnel-shaped hose body if the walls bounding the hose body lie flat against each other, e.g., when the winding section of the hose body is ready and / or arranged for winding. In this context, "trapezoidal" also means that the sloping walls or side flanks can be straight, but they can also be curved or stepped. For example, the curves are convex, narrowing the hose body from the hose outlet to the bag outlet, although a concave shape would also be possible.

[0084] If the filter bag has a waist or narrowing towards or in the area of ​​the bag outlet, the pressure on the coil closing the bag outlet decreases during suction operation of the vacuuming device and / or the forces acting on the coil in the area of ​​the bag outlet become less.

[0085] The hose body as a whole, and especially the coiled section, can be narrower towards or in the area of ​​the bag outlet, or may have a waist or be constricted. This can also result in the pressure forces acting on the coil in the area of ​​the bag outlet being less effective during suction operation of the vacuum cleaner.

[0086] Preferably, it is provided that a maximum passage cross-section of the bag outlet is smaller than a maximum receiving cross-section of the dust receiving chamber in a particularly central area between the bag outlet and the bag inlet.

[0087] The maximum flow cross-section of the bag outlet is preferably at least 10% smaller, preferably at least 20%, and even more preferably at least 30% smaller than the maximum flow cross-section of the hose outlet.

[0088] It is equally advantageous if the maximum transverse width of the bag outlet, when its walls lie flat against each other, is at least 10% smaller, preferably at least 20%, and even more preferably at least 30% smaller than the maximum transverse width of the hose outlet, when its walls lie flat against each other.

[0089] The dust collection chamber is inflated in a state that occurs, for example, during the operation of the vacuum cleaner, so that a collection cross-section of maximum size is available. Such a collection cross-section, which can be located, for example, in a central area between the bag outlet and the bag inlet, but can also be located closer to the bag outlet or closer to the bag inlet, is larger than the maximum opening cross-section of the bag outlet in the aforementioned embodiment of the invention. The advantage lies in the fact that the pressure on the winding that closes the bag outlet, which occurs, for example, during the operation of the vacuum cleaner, is reduced by its smaller opening cross-section compared to the collection cross-section of the dust collection chamber.

[0090] It may be provided that the bag outlet has a slit-shaped form.

[0091] The bag outlet has a slit-like shape, for example, when it is not subjected to pressure, or only to a small degree, during operation of the vacuum cleaner. Naturally, the filter bag and the hose body are advantageously flexible and pliable, so that the slit-like bag outlet deforms, for example, when dust is emptied from the dust collection chamber through the bag outlet, and thus moves away from its slit-like shape.

[0092] An advantageous embodiment of the invention provides that the filter bag is designed as a block bag.

[0093] A filter bag designed as a block bag has a particularly high absorption capacity. The block bag can, for example, have a side wall on which the bag inlet is located, extending between a top wall and a bottom wall. Further side walls can be provided between the top wall and the bottom wall, or the bottom wall and the top wall can be connected by these further side walls, with these side walls preferably being connected in turn to the side wall containing the bag inlet.

[0094] On the side opposite the side wall with the bag inlet, the upper and lower side walls (i.e., a top wall and a bottom wall) can be directly connected to each other, or they can be connected to each other by a rear side wall or a side wall opposite the side wall with the bag inlet. The bag outlet can be located on this side wall opposite the bag inlet, for example, in the middle of the same side wall or at its connection points to the top wall and / or bottom wall.

[0095] In any case, the following measure is advantageous: Preferably, it is provided that opposing side walls of the filter bag have a smaller distance between them in the area of ​​the bag outlet than in an area further away from the bag outlet, in particular that the side walls in the area of ​​the bag outlet are directly connected to each other on their longitudinal sides.

[0096] The advantage of this design is that the forces or pressures acting on the bag outlet and thus on the coil closing the bag outlet are as low as possible.

[0097] It is advantageous that the bag inlet and the bag outlet and / or the hose outlet are arranged on opposite longitudinal end regions of the filter bag.

[0098] The filter bag, for example, has a tubular shape or a long, stretched, or elongated shape, with the bag inlet located on one side or at a longitudinal end area, for example on an end wall or end-facing side wall, while the bag outlet and / or the tube outlet are located on a side wall opposite this or at a connection area between the top wall and bottom wall of the filter bag.

[0099] Advantageously, it is provided that in a state where the upper and lower side walls or the top wall and the bottom wall are in contact, the connecting side walls, which can also be called longitudinal side walls, form a triangular shape or have a triangular perimeter. The longitudinal side walls in the triangular shape or with the triangular perimeter, for example, project laterally outwards from the top wall and bottom wall or are arranged between the top wall and the bottom wall.

[0100] Advantageously, the winding is designed so that, when the winding-fixing device assumes its fixed position, the winding is movable in an area opposite the bag outlet in such a way that a portion of the hose section is movable and the mobility of at least one wall of the filter bag opening into the hose section is facilitated or increased. This mobility of the winding advantageously allows one or more walls of the filter bag to move away from each other during suction operation, thereby increasing the volume of the filter bag that can be filled with dust or particles.

[0101] It should be noted at this point that the term "dust" is used in the description and claims as a general term for particles, dust or similar other suction material for which the filter bag device is provided and designed.

[0102] For example, the top wall and / or bottom wall of the filter bag can open into the hose section, whereby the coil, even when fixed by the coil securing device, allows this top or bottom wall to swing relatively freely in the coiling position. This enables a kind of self-cleaning effect. For example, the movable bag wall, which opens into the hose section in the coiling area, can, due to the additional mobility it experiences in the coiling area due to the hose section, essentially shake off any filter cake that accumulates during vacuuming.Therefore, the aforementioned measure is intended to make one or more walls of the filter bag, which open into the hose section, more freely movable, even if the coil is fixed by the coil fixing device, so that dirt adhering to the respective wall can be at least partially removed by changing the suction flow generated by the vacuum cleaner and flowing through the filter bag, due to the mobility of the respective wall.

[0103] The wrap, when fixed by the wrap-fixing device, can stand freely or relatively freely in its wrap position. The following measure, for example, is advantageously provided for this purpose.

[0104] Preferably, the winding fixation device, in the fixation position, does not engage or enclose the winding in a region of the winding opposite the bag outlet, or at most only engages 80% of the winding parallel to the winding axis. The winding axis of the winding thus extends, for example, transversely across the bag outlet, with the winding not being fixed by the winding fixation device, or only being fixed over a portion of the winding axis directly opposite the bag outlet. Therefore, if sections of the winding protrude laterally in front of the bag outlet, the winding fixation device can, for example, fix only these sections. A central section of the winding opposite the bag outlet can remain unfixed, but is held in its winding position by the winding fixation device laterally securing one or two sections of the winding protruding in front of the central section.Even if components of the winding fixation device are present on the central section directly opposite the bag outlet, such as a retaining strap or similar device, it is advantageous if these components do not hold the winding parallel to the winding axis along its entire length, but only to a maximum of 80%. The retaining strap is therefore significantly narrower than the width of the winding. Thus, the retaining strap only extends over a portion of the winding parallel to the winding axis. These measures can advantageously contribute to allowing or improving a certain degree of movement in one or more walls of the filter bag in the area of ​​the bag outlet.

[0105] In principle, it is conceivable that the winding fixation device could be designed, for example, as an elongated retaining clip or comprise one or more retaining clips that grip the winding along its axis. However, it is advantageous if such fixation is either absent or minimal. For example, individual clips or clamps gripping the winding can be used as the winding fixation device, but there should still be gaps between the clips or clamps in the direction of the winding axis, so that the winding is not, or only minimally, enclosed or gripped by the clips or clamps. This allows for relatively large movement of the winding, for example, when the suction flow changes, thus making the aforementioned task of removing dust, dirt, or a filter cake easier.

[0106] However, it is particularly advantageous if the coil, when in the coiling position and with the coiling fixing device in the fixed position, stands freely in the area of ​​the bag outlet or is only held at its longitudinal ends with respect to the coiling axis. This measure ensures that the coil itself closes the bag outlet, but allows for a certain degree of movement of the filter bag in this area.

[0107] The filter bag device may include a winding aid.

[0108] For example, the hose body can be wound or unwound along its longitudinal extent, which corresponds to a winding direction.

[0109] Advantageously, a winding aid facilitating the winding of the winding, for example a reinforcement extending transversely to the winding direction or longitudinal extent of the hose body and suitable for forming a wave body, is provided at the winding section, in particular at the hose outlet, to facilitate the winding of the winding.

[0110] For example, the winding aid can include at least one indentation and / or marking and / or reinforcement or the like at the points intended for folding on the winding section. The indentations, markings, or reinforcements preferably run transversely to the winding direction and / or transversely to the longitudinal extent of the tube body.

[0111] It is possible that several identical or different components of the winding aid, for example several indentations or folding indentations, are provided at a distance with respect to the longitudinal extent of the tube body.

[0112] It is also possible that an axle element or reinforced sections in the form of axle elements and / or shaft bodies are provided at the winding section, particularly at the hose outlet. A shaft or shaft body can, for example, serve as a center or winding aid for producing or winding the coil.

[0113] For example, an edge area of ​​the hose outlet may be reinforced by a wall-like and / or bead-like reinforcement or may have a wall-like and / or bead-like shape, so that winding the coil around this bead or bead area or wall-like reinforcement is made easier.

[0114] The wrap, which is designed in particular in the form of a carrying handle, in which free longitudinal sides of the wrap are connected to each other, namely by the wrap fixing device, can for example be designed in the manner of a closure of a duffel bag.

[0115] A clip or retaining clip, for example, can also be used as a wrapping fixation device to fix the wrap in its wrapping position, for example by clamping or gripping it.

[0116] The filter bag device preferably has a retaining adapter at the bag inlet for connection to a retaining contour or adapter contour of the suction device, which is arranged at its suction inlet. The suction inlet is designed, for example, as a pipe body or pipe stub. A flow connection between the filter bag, namely the bag inlet, and the suction inlet of the suction device can be established by means of the adapter of the filter bag device.

[0117] The filter bag device according to the invention can also be advantageously designed according to the following clauses: It is advantageously provided that the winding section (33), in particular the tube body (31) as a whole, consists of a material or tube material different from the filter material (12) and / or of an air-impermeable material or tube material and / or that the winding section (33), in particular the tube body (31) as a whole, has a different color than the filter bag (11) in the area of ​​the bag outlet (25) or overall and / or that the winding section (33), in particular the tube body (31) as a whole, in the passage position (D) and the filter bag (11) extend along a longitudinal axis, wherein the tube body (31) is shorter than the filter bag (11) with respect to the longitudinal axis.

[0118] Advantageously, the filter bag (11) is designed as a block bag and / or the bag inlet (20) and the bag outlet (25) and / or the hose outlet (32) are arranged on opposite longitudinal end regions of the filter bag (11) and / or opposing side walls of the filter bag (11) have a smaller distance between them in the area of ​​the bag outlet (25) than in an area further away from the bag outlet (25), in particular the side walls in the area of ​​the bag outlet (25) are directly connected to each other on their longitudinal sides.

[0119] The invention therefore also relates to: Definition 1: Filter bag device for a vacuum cleaner, wherein the filter bag device can be arranged in a vacuum cleaner intake chamber of the vacuum cleaner and has a filter bag with a dust intake chamber for collecting dust, wherein the filter bag consists at least partially of a filter material through which air flows and which retains dust in the dust intake chamber, wherein the filter bag has an inlet wall with a bag inlet which is provided for the flow of a dust-laden suction stream into the dust intake chamber, wherein a bag outlet for emptying dust from the dust intake chamber is provided at an outlet area of ​​the filter bag facing away from the inlet wall, wherein a closing device for closing the bag outlet is arranged at the outlet area, wherein the closing device has a hose body.which is arranged at the bag outlet and which has a hose outlet connected to the bag outlet for emptying dust from the dust collection chamber, wherein the hose body is connected to the side walls of the filter bag surrounding the bag outlet in a flow-tight manner, wherein the hose body extends along a longitudinal extent between the bag outlet and the hose outlet, wherein a winding section is provided on the hose body or the hose body is designed as a winding section, wherein the winding section can be wound up from the hose outlet towards the bag outlet, wherein the winding section in the wound state forms a coil which closes the hose outlet and thus the bag outlet, wherein the coil in its position wound towards the bag outlet forms fastening projections laterally projecting in front of the side walls of the filter bag,wherein the fastening projections are flexible and adjustable or bendable relative to each other, so that a fastening element arranged on one fastening projection can be brought into fastening engagement with a counter-fastening element arranged on the other fastening projection, so that the coil with the fastening element and the counter-fastening element forms a carrying handle and the coil is fixed against unwinding. Definition 2: Filter bag device according to Definition 1, characterized in that the fastening element and the counter-fastening element are arranged on a free end region of the tube body facing away from the bag outlet, on which the tube outlet is formed, wherein the free end region of the tube body is arranged in an interior of the coil when the coil is wound up. Definition 3: Filter bag device according to Definitions 1 or 2, characterized in thatthat the filter bag device can be folded into a flat state, in which opposing side walls, in particular a top wall and a bottom wall, of the filter bag lie against each other, and advantageously opposing side walls of the tube body are folded and have overlapping sections. Definition 4: Filter bag device according to Definition 3, characterized in that the overlapping walls of the tube body have a greater transverse width in the area of ​​the tube outlet than the overlapping side walls of the filter bag in the area of ​​the bag outlet. Definition 5: Filter bag device according to one of Definitions 1 to 4, characterized in that the filter bag has a top wall and a bottom wall, between which longitudinal side walls extend, wherein the top wall and the bottom wall as well as the longitudinal side walls define the dust collection space.

[0120] An embodiment of the invention is explained below with reference to the drawing. The drawing shows: Figure 1 shows a perspective oblique view of a known filter bag device, Figure 2 a perspective oblique view of a suction device with the upper housing part removed from its lower housing part, Figure 3 the lower housing part according to Figure 2 as well as a schematically illustrated filter bag device according to the invention, which is inserted into the lower part of the housing and which is shown in more detail in the following figures, Figure 4 a front part of the lower part of the housing of the suction device as well as a section of the filter bag device according to Figure 3 , which is partially attached to a suction inlet of the suction device, approximately corresponding to a cutout D1 in Figure 2 , Figure 5 the section according to Figure 4, however, with a further assembly step of the filter bag device in the vacuum cleaner, Figure 6 the filter bag device completely arranged in the vacuum cleaner approximately in the cutout of the Figures 4 and 5 Figure 7 shows a perspective oblique view of the suction device from above, showing the upper housing part arranged on the lower housing part; Figure 8 shows a perspective oblique view of the upper housing part from a side facing or associated with the lower housing part; Figure 9 shows a section corresponding to the Figure 4 , wherein the filter bag device is partially removed from the suction device 70 and in particular its suction inlet, Figure 10 the arrangement according to Figure 9 , wherein a passage opening of the filter bag device is partially closed, Figure 11 the view accordingly Figure 10, however, with the bag inlet of the filter bag device completely closed, Figure 12 shows a schematic top view of the filter bag device according to the preceding figures, when a winding section of the filter bag device assumes a passage position, Figure 13 shows a detail D2 from Figure 12 of the filter bag device, wherein a coil is already partially formed from the winding section, Figure 14 the view of the filter bag device according to Figure 13 , however with a fully assembled coil, Figure 15, the view of the filter bag device according to Figures 13 and 14 , however, with the coil fixed by a coil fixing device, Figure 16 a top view of the lower housing part of the suction device with the filter bag device inserted, Figure 17 the corresponding view Figure 16, however, slightly obliquely from above, with the filter bag device partially removed from the lower part of the housing, Figure 18 the filter bag device according to the preceding figures, in a perspective oblique view from above with a carrying handle, Figure 19 a view similar to Figure 18 the filter bag device, but with the winding fixing device released, Figure 20 the filter bag device according to the preceding figures in oblique perspective from the side with its closing device in the through-flow position, which is provided for emptying the filter bag device, Figure 21 the filter bag device according to Figure 20 , however, laterally, Figure 22 a part of the filter bag device according to the Figures 20 and 21during emptying into a container, Figure 23 shows a longitudinal side wall of the filter bag device in the unfinished or unsewn state, Figure 24 shows a schematic representation of a tube body with a winding section having projections as winding aids, Figure 25 shows another schematic view of a tube body with a winding section having recesses as winding aids, Figure 26 shows a schematic representation of a winding-fixing device that chambers a winding of a tube body in its released position, and Figure 27 shows the winding-fixing device according to Figure 26 in fixation position.

[0121] A suction device 70 has a housing 71. The housing 71 is divisible or two-part and comprises a lower housing part 72 for placing the suction device 70 on a surface and an upper housing part 80. The lower housing part 72 and the upper housing part 80 can be connected to each other by means of retaining elements 85.

[0122] The lower housing part 72 has a circumferential wall 73 and a bottom wall 74.

[0123] The circumferential wall 73 includes, for example, an end wall 75 on which a suction inlet 77 is arranged.

[0124] The suction inlet 77 is flow-connected to a suction device receiving chamber 78, which is circumferentially limited by the bottom wall 74 and the circumferential wall 73.

[0125] On one side opposite the bottom wall 74, the suction device receiving chamber 78 is closed by the upper housing part 80 when this is arranged on the lower housing part 73.

[0126] A suction motor 81 for generating a suction flow SM is arranged in the upper housing part 80. The suction motor 81 can be operated, for example, using electrical energy storage devices, such as battery packs, etc. Preferably, however, mains operation is provided, for which a mains cable 82 of the suction device 70 is available. The suction motor 81 can be supplied with power via the mains cable 82.

[0127] Control elements 83 are provided on the housing 71 for controlling the suction device 70.

[0128] The suction unit 70 can be designed for a cleaning operation, i.e., that, for example, a main filter 84, which is located upstream of the suction motor 81 and between the suction unit intake chamber 78 and the suction motor 81, is cleaned by mechanical action, by a counterflow opposite to the direction of the suction flow SM that normally flows through the main filter 84, or the like. Thus, dust S is then collected directly in the suction unit intake chamber 78. The suction unit intake chamber 78 is subsequently emptied again, i.e., the dust S is removed from it by opening the housing 71.

[0129] Alternatively, filter bags can be used, which are then disposed of entirely after use.

[0130] However, an advantageous and very hygienic concept for the operator provides for the use of a filter bag device 10 as an alternative or supplement to the use of disposable filter bags: By removing the upper housing part 80 from the lower housing part 72, the filter bag device 10 can be inserted into or removed from the suction device intake chamber 78. For this purpose, the retaining elements 85 are released.

[0131] The filter bag device 10 comprises a filter bag 11. The filter bag 11 includes a dust collection chamber 13, which is designed to collect dust S. The dust collection chamber 13 is enclosed by filter material of the filter bag 11, which is permeable to air but retains dust S in the dust collection chamber 13.

[0132] The filter bag 11, for example, is designed as a block bag. For example, the filter bag 11 includes an inlet wall or end wall 14, which extends between a bottom wall or base wall 15 and a top wall or lid wall 16.

[0133] Optionally, a rear wall 18 is located opposite the front wall 14.

[0134] Between the rear wall 18 and the front wall 14, as well as between the bottom wall 15 and the top wall 16, side walls or longitudinal side walls 17 extend.

[0135] However, it is also possible that the bottom wall 15 and the top wall 16 are directly connected to each other on a side opposite the end wall 14 or on the side of the filter bag 11 opposite the end wall 14, or that the back wall 18 is less high than the end wall 14, so that the bottom wall 15 and the top wall 16 have a greater distance from each other in the area of ​​the end wall 14 than in the area of ​​the back wall 16. In the illustration according to Figure 20 For example, one of the side walls 17 is turned outwards in the area of ​​the front wall 14, so that it covers a section of the bottom wall 15 shown with a dashed line. This section can also be understood as the rear wall 18.

[0136] Folds 19 can be provided on the longitudinal side walls 17, so that the filter bag 11 can be brought into an inflated or extracted state between a flat position, in which the bottom wall 15 and the top wall 16 are in contact with each other or arranged at a small distance from each other, and in which the top wall 16 has a maximum distance from the bottom wall 15. This extracted or inflated state occurs, for example, during the suction operation of the vacuum device 70, when the vacuum motor 81 generates a corresponding suction flow SM that flows through the filter bag 11 and inflates it.

[0137] In Figure 21 The figure shows that the longitudinal side walls 19 are, so to speak, unfolded and project laterally in front of the top wall 16.

[0138] It is advantageous if the longitudinal side walls 17 have, for example, a dart 19A in the area of ​​the bag outlet 25. For example, the longitudinal side wall 17, which is rectangular in its outer contour, can have a triangular cutout in the area of ​​the bag outlet 25, the side edges 19B of which are sewn together, thereby forming the darts 19A.

[0139] The walls of the filter bag 11, i.e., for example, the end wall 14, the bottom wall 15, the top wall 16, as well as the long side walls 17 and the optional back wall 18, are sewn and / or welded together or the like. Seams 28 are provided as an example.

[0140] The longitudinal side walls 17 as well as the top wall 18 and / or the bottom wall 15 can also be designed as a tube body or tube element, i.e., for example, seamlessly transitioning into one another.

[0141] When the suction motor 81 is switched off, the filter bag 11 collapses in on itself; that is, the top wall 16, which during operation and in its mounted state faces a suction inlet and / or a main filter 84 of the vacuum cleaner 70 and is drawn against it, collapses towards the bottom wall 15. With the suction motor 81 switched off, the top wall 16 is no longer subjected to suction force from the suction motor 81 towards the upper housing 80 and thus away from the bottom wall 15. As the top wall 16 collapses towards the bottom wall 15, any dirt adhering to it can fall off towards the dust collection chamber 15. This creates a self-cleaning effect for the filter bag 11 when the vacuum cleaner 70 is switched off. Therefore, the filter material 12 of the filter bag 11 is flexible.

[0142] A connecting adapter 21 for connection to the suction inlet 11 of the vacuum cleaner 70 is provided at a bag inlet 20 of the filter bag 11. The connecting adapter 21 includes, for example, guide contours or retaining contours 22 for engagement with adapter contours 79, 86 of the vacuum cleaner 70, as well as a passage opening 23 which, in the state of the filter bag device 10 being mounted on the vacuum cleaner 70, i.e., when the connecting adapter 21 is attached to the suction inlet 77, is flow-connected to the suction inlet 77 and / or is opposite the suction inlet 77, so that a suction flow SM generated by the vacuum motor 81 can flow through the suction inlet 77 and through the passage opening 23 into the bag inlet 20 and thus into the dust collection chamber 13.

[0143] The suction flow SM entering the suction inlet 77 is, for example, laden with dust or other similar particles S. The dust or particles S are retained and collected in the filter bag device 10.

[0144] The retaining contours 22 preferably comprise positive-locking contours, in particular positive-locking projections, one of which can be inserted into the adapter contour 79, which is designed, for example, as a plug-in receptacle, and the other positive-locking projection forms a detent contour or retaining contour for the adapter contour 86. The adapter contour 86, on the other hand, is designed, for example, as a detent hook or has a detent hook that can be engaged with the other retaining contour 22 or with the other positive-locking projection that does not engage with the adapter contour 79.

[0145] The connecting adapter 21 comprises, for example, a plate-shaped wall body 26 on which the bag inlet 20 is arranged. The wall body 26 has a certain rigidity, so that the through-opening 23 forms a plug-in receptacle 27 of the wall body 26, which is fluidically connected to and / or opposite the bag outlet 26 and which can be plugged onto a pipe body or nozzle 77A of the suction inlet 77 of the suction device 70.

[0146] The through-opening 23 is thus configured, for example, as the socket 27 into which the nozzle or pipe body 77A can be inserted. A sealing element 27A, for example an elastic seal, a sealing membrane 27C, or the like, is preferably arranged at the through-opening 23 or the socket 27, and has an annular insertion opening 27B configured as a through-opening. The pipe body or nozzle 77A can be inserted into the insertion opening 27B, and in the state of the pipe body or nozzle 77A being inserted into the sealing element 27A, the sealing element 72A bears against its outer circumference in a sealing manner and / or in a sealing seat, see, for example, [reference]. Figure 4 .

[0147] A closure 24 is preferably provided at the through-opening 23, with which the bag inlet 20 and thus the filter bag device 10 can be closed on the inlet side.

[0148] The closure 24 can, for example, comprise a wall body 24A which can be brought in front of the passage opening 23 by means of a sliding bearing.

[0149] The closure 24 can also be designed, for example, as a plug 24B that can be inserted into the through-opening 23. Preferably, the plug 24B is movably mounted on the filter bag device 10 and / or held in place in a captive manner, for example by means of a flexible band, rope, or the like.

[0150] However, the bag inlet 20 does not necessarily have to be located on the front wall 14. A schematic representation in Fig. 16Figure 1 shows, for example, a bag inlet 120 arranged on the cover wall 16, for example on a connecting adapter 121 arranged on the cover wall 26. The bag inlet 120 is fluidically connected to a through-opening 123 of the connecting adapter 121. Furthermore, the connecting adapter 121 preferably also has a rigid and / or plate-shaped wall body 126. The through-opening 123 is preferably designed as a plug-in receptacle and / or through-opening for a connecting nozzle or pipe body of the type of nozzle 77A. A membrane or other sealing element is preferably also arranged at the through-opening 123.

[0151] The filter bag device 10, and in particular the filter bag 11, has a bag outlet 25. The bag outlet 25 is preferably located opposite the bag inlet 20. The bag outlet 25 is formed, for example, essentially between the bottom wall 15 and the top wall 16, which have a minimal distance from each other in the area of ​​the bag outlet 25. There, for example, the bottom wall 15 and the top wall 16 are directly connected to each other in the area of ​​the longitudinal side walls 17, i.e., on the outer sides of the bag outlet 25.

[0152] It is also possible that the longitudinal side walls 17 in the area of ​​the bag outlet 25 have a smaller extent than in, for example, a middle section of the filter bag 11 between the bag outlet 25 and the bag inlet 20.

[0153] The filter bag 11 can also be understood as a tube-like or block-like body that extends between the bag inlet 20 and the bag outlet 25.

[0154] In principle, the filter bag device 10 could be disposed of when the intake chamber 13 is filled with dust S. In this case, for example, no bag outlet 25 would be provided. However, the filter bag device 10 features a simple yet effective disposal concept, allowing it to be conveniently emptied and subsequently reused.

[0155] For this purpose, a closure device 30 is provided at the bag outlet 25. The closure device 30 comprises a hose body 31. The hose body 31 extends along a longitudinal dimension L between the bag outlet 25 and a hose outlet 32 ​​of the hose body 31, through which dust S can be emptied from the dust collection chamber 13. The hose outlet 32 ​​and the bag outlet 25 are fluidically connected, i.e., dust S or a "dust stream" exiting the bag outlet 25 can be emptied through the hose body 31 via the hose outlet 32, for example, into a collection container M. During and / or the emptying of dust S, the hose body 31 has an elongated shape, i.e., a passage position D.

[0156] Starting from the through-hole position D, the tube body 31 can be wound up completely or partially, for which purpose the tube body 31 has a winding section 33. The winding section 33 can extend over the entire length of the tube body 31 with respect to its longitudinal extent L, or only over a portion thereof. A length LW of the winding section 33 therefore preferably corresponds to the entire longitudinal extent of the tube body 31 with respect to its longitudinal extent L. In particular, the winding section 33 extends from the tube outlet 32 ​​completely or entirely to the bag outlet 25.

[0157] The winding section 33 can be wound from the passage position D into a winding position W, in which the winding section 33 forms a winding 34.

[0158] The Wickel 34 has several advantageous functions.

[0159] A key function of the winding 34 is to seal the bag outlet 25. For example, two or three winding operations are sufficient to seal the bag outlet 25. Preferably, the winding 34 comprises, for example, two or three superimposed double layers of the material 35 of the tube body 31. Each of these double layers comprises a pair of opposing walls of the tube body 31 formed by the material 35.

[0160] The hose body 31 advantageously consists of an air-impermeable material 35, which differs from the filter material 12 in that respect.

[0161] It would also be possible, in principle, for the material 35 to have at least a slight air permeability and / or to be identical to the filter material 12, whereby the hose outlet 32 ​​can nevertheless be sufficiently sealed or closed for suction operation by means of the winding 34. The layering of the hose body 31 in the area of ​​the winding 34 results in airflow or air exchange between the layers of the material and between the layers being no longer possible, or at least restricted to such an extent that a seal suitable for suction operation can be achieved or is achieved.

[0162] The material 35 is preferably a different color than the filter material 12, so that an operator can easily recognize the function of the hose body 31 and in particular of the winding section 33, namely the function as a closure device 30 by forming the winding 34.

[0163] Furthermore, it is advantageous if the material 35 is easier to wind than the filter material 12 and / or thinner than the filter material 12, which also facilitates the formation of the winding 34 or the production of the winding 34.

[0164] However, optical differences between the hose body 31 on the one hand and the filter material 12 or the filter bag 11 on the other hand are not absolutely necessary to recognize the functionality of the winding section 33.

[0165] Advantageously, the hose outlet 32 ​​is significantly larger than the bag outlet 25, thus having a larger maximum opening cross-section; that is, the hose body 31 is wider or larger at its free end region facing away from the bag outlet 25 than in the region of the bag outlet 25. Overall, the hose body 31, especially when lying flat, has a funnel-shaped or trapezoidal form, for example in a top view, such that the larger opening cross-section of the funnel forms the hose outlet 32 ​​and the smaller region marks the transition to the bag outlet 20.

[0166] According to its funnel-shaped or trapezoidal shape, the tube body 31 and / or the winding section 33 has or forms a projection 36 on opposite sides in the area of ​​the tube outlet 32, which projects in front of the tube body 31 in the area of ​​the bag outlet 25.

[0167] If the winding section 33 is now wound up from the hose outlet 32, creating, for example, winding layers 34A, 34B and thus ultimately forming a winding 34, the projections 36 protrude laterally in front of the filter bag 11 in the area of ​​the bag outlet 25 and form fastening projections 37, the function of which becomes even clearer.

[0168] In the exemplary embodiment, the winding 34 is formed by, for example, winding the winding section 33 three or four times.

[0169] The winding of the wrap 34 is facilitated by a winding aid 38. For example, markings 39 are formed on the wrap section 38 transversely to the longitudinal extension L, which simultaneously represents a winding direction WR. These markings could be, for example, optical markings, pre-embossed fold grooves, seams, or the like, which facilitate winding the wrap section 33 into the wrap 34. The markings 39 could also, for example, represent folding aids or the like, meaning that the wrap is produced by unfolding in the sense of winding.

[0170] Alternatively or additionally, the winding aid 38 comprises a reinforcement 40 extending transversely to the longitudinal extent L of the tube body 31 or winding direction WR. Thus, the reinforcement 40 extends around a winding axis WA or along or parallel to a winding axis A around which the coil 34 is wound. The preferably wave-like reinforcement 40 could also be described as a wave-body reinforcement or a reinforcement that acts in the manner of a wave-body or axle-body. It is not necessary for the reinforcement 40 to be round; it can also be formed, for example, by a wall-like reinforcing material applied to the material 35.

[0171] In any case, the production of the wrap 34 is very easy, especially with the aid of the wrap 38, whereby the projections 36 already explained protrude in front of the wrap 34 as fastening projections 37.

[0172] The fastening projections 37 form components of a winding-fixing device 50. The winding-fixing device 50 further comprises tabs 51, which are attached laterally to the hose body 31 near the hose outlet 32. The tabs 51 are provided and / or arranged at the free end regions of the fastening projections 37.

[0173] The tabs 51 can, for example, be provided as an extension of the reinforcement 40 or attached to it. The tabs 51 preferably consist of a flexible material, for example a textile tape material, a plastic tape or the like.

[0174] In any case, the tabs 51 and / or the flexibility of the fastening projections 32 allow the free end areas of the tabs 51 and thus also the free end areas of the fastening projections 37 to be folded or turned towards a center 34M of the coil 34 when it is in the winding position W or wound around the winding axis WA, so that fastening means arranged on the tabs 51, namely a fastening element 52 and a counter-fastening element 53 cooperating with it, can be brought into engagement with each other.

[0175] The dimensions of the filter bag device 10 are advantageously chosen such that the transverse width QB of the bag outlet 25, in the winding position W of the winding 34 and / or when the walls bounding the bag outlet 25 lie flat against each other, is less than the distance AB between the counter-fastening element 53 and the fastening element 52, e.g., a maximum of 80%, more preferably a maximum of 70%, and even more preferably a maximum of 60% of the distance AB between the fastening element 52 and the counter-fastening element 53. Thus, the fastening elements 52 and 53 can be brought into engagement with each other without significantly deforming the bag outlet 25 and / or without deforming the most distant areas of the walls bounding the bag outlet 25 in one direction to bring the fastening elements 52 and 53 into engagement with each other.

[0176] Advantageously, the transverse width QS of the hose outlet 32, when its walls bounding the hose outlet 32 ​​lie flat against each other, is larger than the transverse width QB, for example at least 50% larger, more preferably at least 60% or 70% larger, and even more preferably 80% or 90% larger than the transverse width QB. Preferably, the transverse width QS is approximately twice the transverse width QB.

[0177] If the cross width QS is, for example, at least or approximately 90% larger than the cross width QB, which is the case, for example, in Figure 21 As can be seen, the fastening elements 52, 53 can be attached directly to the hose body 31 or with very short tabs 51. The length of the tabs 51 is preferably a maximum of 10% of the transverse width QS.

[0178] In the exemplary embodiment according to the Figures 12 to 15The tabs 51 are designed to be somewhat longer in order to provide the distance AB with a narrower transverse width QS of the hose outlet 32 ​​such that the distance QB is at most 80%, more preferably at most 70%, and more preferably at most 60% of the distance AB.

[0179] The winding section 33, for example, has a length LW that allows for three or four windings or folding of the winding section 33 into winding layers. The length LW advantageously corresponds to at least half the transverse width QS. It is particularly preferred if the length LW is at least 70% or at least 80% of the transverse width QS.

[0180] The fastening element 52 comprises, for example, a buckle 54 that can be inserted into a buckle receptacle 55 provided or formed by the mating fastening element 53. For example, the buckle 54 is a snap buckle. The buckle 54 may have detent projections 56 that can be engaged with detent receptacles 57 of the buckle receptacle 55. By actuating the detent projections 56 engaging the detent receptacles 57, they can be disengaged from the detent receptacles 57 to release the buckle 54 from the buckle receptacle 55 and move the winding locking device 50 into the release position L.

[0181] Therefore, the tabs 51 and the fastening projections 37 are misaligned relative to each other when the winding fixing device 50 assumes its fixing position F.

[0182] At the same time, the interconnected fastening projections 37 form a carrying handle 60, which enables an operator to grasp the filter bag device 50 and lift it out of the suction device receiving chamber 78, approximately as in Figure 17 depicted.

[0183] The hands H1 and H2 of an operator are shown as an example, with hand H1 grasping the carrying handle 60.

[0184] It proves advantageous that the carrying handle 60 is arranged at an end of the filter bag device 10 that is remote from the bag inlet 20 and the connecting adapter 21, so that the filter bag device 10 can be lifted at the end furthest from the suction inlet 77 or nozzle 77A by the operator pulling on the carrying handle 60. This can also enable or facilitate the removal of the filter bag device 10 from the suction inlet 77 or nozzle 77A.

[0185] Furthermore, the operator can easily grasp the filter bag device 10 on a side away from the locking device 30 or from the carrying handle 60; for example, the operator can grasp the connecting adapter 21 with his hand H2, for example in the area of ​​the guide contours 22 or on the guide contours 22. Thus, the filter bag device 10 can be conveniently grasped on two opposite sides and lifted out of the suction device receiving chamber 78.

[0186] Grasping the filter bag device 10, for example by the carrying handle 60, can also facilitate the removal of the connecting adapter from the suction inlet 77 and the passage opening 23 from the nozzle 77A.

[0187] An advantage of the winding fixing device 50 is also that it does not fix the winding 34 directly in the area of ​​the bag outlet 35 or its central area, but rather at its lateral sections, between which the central section is arranged, so that the filter bag 11 can inflate to at least a certain extent into the hose body 31 during the suction operation of the vacuum cleaner 70, which in particular increases the mobility of the top wall 16 and thus also the possibility that dirt adhering to the top wall 16, for example a filter cake, can fall off the top wall 16 more easily and / or the aforementioned self-cleaning effect is improved or may even be achieved in the first place.

[0188] As an alternative to fastening the coil 34 using the two fastening elements 52 and 53, for example at least one fastening element 152 and / or at least one counter-fastening element 153 could also be provided inside the suction device 20, for example in the suction device receiving chamber 78, for example a buckle 154 for the buckle receptacle 55 and / or a buckle receptacle 155 into which the buckle 54 can be inserted.

[0189] Alternatively, the coil 34 can also be fixed, for example, by means of a band or fastening element 252, which is preferably arranged at a distance from the hose outlet 32, on the hose body 31 or coil section 33, and which projects in front of the coil 34 in the wound state or in the coil position W of the coil 34 in order to engage with, for example, a counter-fastening element 253 of the filter bag device 10. The counter-fastening element 253 can be arranged on the hose body 31 or on the filter bag 11, preferably near the bag outlet 25. The fastening element 252 comprises, for example, a buckle 254 and the counter-fastening element 253 a buckle receptacle 255.

[0190] However, it is also possible that the fastening element 252 only comprises a band which can be inserted into and fixed to a clamping device or holding device formed by the counter-fastening element 253, e.g. by clamping.

[0191] The fastening element 252 and the counter-fastening element 253 can, for example, be designed for a hook and loop connection, i.e., one of the two elements 252, 253 has hook and loop fasteners and the other has hook and loop fasteners.

[0192] The in Figure 1The illustrated known filter bag device essentially comprises the components already described, for example, a filter bag 411, which is fundamentally similar in construction to the filter bag 11 and has an end wall 14 on which the connecting adapter 21 is arranged. The bag outlet 425 is provided with a closing device 430. The closing device 430 includes, for example, a clamping element 431 with which stiffening contours 432 arranged on the bag outlet 425 can be clamped. For example, the stiffening contours 432 are designed as pins, rods, or the like, which can be clamped between clamping legs of the clamping element 431.

[0193] In a schematic side view shown closure device 530, which could for example be provided instead of the closure device 30, a hose body 531 is provided which is similar in itself to the hose body 31.

[0194] The tube body 531 has a winding section 533 that can be wound up. Winding the winding section 22 is facilitated by an advantageous winding aid 538. The winding aid 538 has, in particular, rib-like projections 540 extending in front of the material 35 or a side wall of the tube body 31 formed by the material 35, which, for example, facilitate winding the winding section 533 into a coil 34. It is also possible that the projections 540 serve, for example, as folding aids to fold the material of the tube body 31 at the points formed by the projections 540.

[0195] The hose body 531 is arranged, for example, in place of the hose body 30 on the filter bag 11 and in particular its bag outlet 25.

[0196] A tube body 631 of a closure device 30 can also be arranged on the filter bag 11 instead of the tube body 31 or 531. The tube body 631 serves in particular to form a coil or folded stack. For example, the tube body 31 or the material 35 of the tube body 631 has recesses 641 at several locations transverse to the longitudinal extent L of the tube body 630, which extend transversely to the longitudinal extent L. The recesses 641, as well as the projections or reinforcements 540, preferably have a longitudinal shape and extend transversely to the longitudinal extent L. In the transverse direction to the longitudinal extent L, the recesses 641 and / or the reinforcements or projections 540 can be segmented. For example, the projections or reinforcements 540 can have recesses along their longitudinal direction.The recess 641 also need not have the same depth continuously along its longitudinal extent.

[0197] The recesses 641 facilitate the formation of a folded stack as a coil, which then represents, for example, a coil 34.

[0198] The coil 34 can also be fixed by means of a coil fixing device 750. The coil fixing device 50 has a fastening element 752 and a counter-fastening element 753. The two fastening elements 752, 753 are, for example, movably mounted relative to each other, in particular pivotably mounted relative to each other. The fastening elements 752, 753 can, for example, be designed in the form of clamp arms. When the fastening elements 752, 753 assume their fixing position F, the coil 34 is enclosed in a receiving chamber 758 so that it can no longer come loose. Only the section of the hose body 31 projecting from the coil 34 can protrude from the receiving chamber 758, namely through a passage opening 759 which is provided between the fastening element 752 and the counter-fastening element 753. For example, the receiving chamber 758 is provided partly in the fastening element 752 and partly in the counter-fastening element 753.

[0199] However, it is also possible that the receiving chamber 758 is arranged in only one of fastening element 752 or counter-fastening element 753, with the other fastening element 752 and counter-fastening element 753 then closing the receiving chamber 758.

[0200] The filter bag device 10 may be equipped with several winding fixing devices 750. For example, several corner fixing devices in 750 may be spaced apart from each other with respect to the winding axis WA and each fix the winding 34.

[0201] The fastening element 752 and / or the counter-fastening element 753 can be held captive on the filter bag device 10.

[0202] It is also possible that the fastening element 752 and the counter-fastening element 753 are designed as separate devices from the filter bag device 10 and the suction device 70 and / or that the winding fixing device 750 is a separate device from the filter bag device 10 and the suction device 70, i.e., preferably that the winding fixing device 750 is completely removable from the filter bag device 10.

[0203] The winding fixation device 750 can be a separate device from the suction device 70.

[0204] The winding fixing device 750 can, for example, be provided wholly or partially by the suction device 70. For example, it is possible that the fastening element 752 and / or the counter-fastening element 753 are permanently or captive attached to the suction device 70.

[0205] One variant provides that, for example, one or both of the fastening element 752 and / or counter-fastening element 753 are arranged on or provided by the housing 71 of the suction device 70. For instance, the counter-fastening element 753 is arranged on the lower housing part 72 and the fastening element 752 is arranged on the upper housing part 80. Thus, when, for example, the upper housing part 80 is lifted from the lower housing part 72, the winding locking device 750 simultaneously assumes its release position L, so that the winding 34 can be removed from the receiving chamber 758. When the filter bag device 10 is inserted into the housing 71, the winding 34 is inserted into the part of the receiving chamber 758 of the counter-fastening element 753, and then the housing 71 is closed, i.e., the upper housing part 80 is moved towards the lower housing part 72.This also simultaneously adjusts or sets the winding fixing device 750 to its fixing position F, i.e., the receiving chamber 758 is closed.

Claims

1. Filter bag device (10) for a vacuum cleaner (70), wherein the filter bag device (10) can be arranged in a vacuum cleaner intake chamber (78) of the vacuum cleaner (70) and has a filter bag (11) with a dust intake chamber (13) for collecting dust (S), wherein the filter bag consists at least partially of a filter material (12) through which air can flow and which retains dust (S) in the dust intake chamber (13), wherein the filter bag device (10) has a bag inlet (20) connectable to a suction inlet (77) of the vacuum cleaner (70), which is provided for the flow of a suction stream (SM) loaded with dust (S) into the dust intake chamber (13), wherein a connecting adapter (21) for connection to the suction inlet (77) of the vacuum cleaner (70) is arranged at the bag inlet (20),wherein the connecting adapter (21) has a plate-shaped and / or stiffer wall body (26) compared to the filter material (12) with a through-opening (23) designed as a plug-in receptacle (27) into which a pipe body (77A) flow-connected to the suction inlet (77) of the suction device (70) can be inserted, wherein a bag outlet (25) for emptying dust (S) from the dust collection chamber (13) is arranged at an outlet area of ​​the filter bag (11), wherein the filter bag device (10) has a closing device (30) for closing the bag outlet (25), characterized by the fact thatThe closure device (30) comprises a hose body (31) arranged at the bag outlet (25), which has a hose outlet (32) flow-connected to the bag outlet (25) for emptying dust (S) from the dust collection chamber (13), wherein the hose body (31) extends along a longitudinal extension (L) between the bag outlet (25) and the hose outlet (32) and has a winding section (33) between the bag outlet (25) and the hose outlet (32), which can be wound from a passage position (D) provided for emptying the dust (S) from the dust collection chamber (13) and unwound, in particular elongated, along a winding path into a winding position (W) closing the bag outlet (25) towards the bag outlet (25) to form a winding (34), and that the closure device (30) includes a winding fixing device (50) for Fixing the wrap in the wrap position (W) has,wherein the winding-fixing device (50) in a fixing position opposes an unwinding of the winding (34) in the direction of the passage position (D) and in a release position releases the winding (34) to an unwinding of the winding into the passage position (D).

2. Filter bag device (10) according to claim 1, characterized by the fact that the winding section (33), in particular the tube body (31) as a whole, is made of a material or tube material different from the filter material (12) and / or of an airtight material or tube material and / or the winding section (33), in particular the tube body (31) as a whole, has a different color than the filter bag (11) in the area of ​​the bag outlet (25) or overall 3. Filter bag device (10) according to claim 1 or 2, characterized by the fact thatThe winding fixing device (50) has at least one fastening element (52) arranged, in particular on the hose body (31), preferably fixedly, which can be connected to at least one counter-fastening element (53) for fixing the winding (34), wherein it is advantageously provided that the counter-fastening element (53) is arranged on the hose body (31) or is arranged or can be arranged on the suction device (70).

4. Filter bag device (10) according to claim 3, characterized by the fact that the fastening element (52) and / or the counter-fastening element (53) is arranged on a tab (51) arranged on the hose body (31), which, in particular in the direction of a winding axis (WA) around which the coil (34) is wound or is intended to be wound, projects in front of the coil (34) or can be brought into a position projecting in front of the coil (34).

5. Filter bag device (10) according to claim 3 or 4, characterized by the fact thatthe fastening element (52) and the counter-fastening element (53) are arranged on the hose body (31) and are engaged with each other in the fixing position of the winding fixing device (50), wherein at least one of the fastening element (52) or counter-fastening element (53) is adjusted towards a longitudinal center of the winding (34) transversely to the longitudinal extent (L) of the hose body (31).

6. Filter bag device (10) according to one of claims 3, 4 or 5, characterized by the fact thata maximum transverse width (QB) of the bag outlet (25), when the walls of the filter bag (11) limiting the bag outlet (25) lie on top of each other and, in particular, the bag outlet (25) forms a narrow slot extending in a longitudinal direction, is a maximum of 80%, more preferably a maximum of 70%, more preferably a maximum of 60% of a distance (AB) between the fastening element (52) and the counter-fastening element (53), when the fastening element (52) and the counter-fastening element (53) are projected away from the tube body (31) as far as possible in a direction that determines the maximum transverse width (QB) of the bag outlet (25).

7. Filter bag device (10) according to one of the preceding claims, characterized by the fact thatthe coil (34) in the coiling position (W) has or forms at least one fastening projection (37) which projects in front of the coil (34) in the area of ​​the bag outlet (25) in the direction of a coiling axis (WA) around which the coil (34) is wound, or which can be brought into a position projecting in front of the coil (34), or that the coil (34) in the coiling position (W) has or forms at least one fastening projection (37) on opposite sides, wherein at least one of the fastening projections (37) is movable towards the other fastening projection (37) and can be brought into retaining engagement with this other fastening projection (37).

8. Filter bag device (10) according to one of the preceding claims, characterized by the fact thatit does not have shoulder straps or carrying straps with which the filter bag device (10) can be carried and / or the filter bag device (10) is not designed and intended to be carried in the manner of a backpack.

9. Filter bag device (10) according to one of claims 3 to 8, characterized by the fact that the fastening element (52) and / or the counter-fastening element (53) is or are arranged at a longitudinal end of the hose body (31) having the hose outlet (32) and / or in the passage position (D) a longitudinal distance of the fastening element (52) and / or the counter-fastening element (53) to the hose outlet (32) in the direction of the longitudinal extent (L) of the hose section is less than a longitudinal distance of the fastening element (52) and / or the counter-fastening element (53) to the bag outlet (25).

10. Filter bag device (10) according to one of the preceding claims, characterized by the fact thata maximum flow cross-section of the bag outlet (25) is smaller than a maximum flow cross-section of the hose outlet (32) and / or the filter bag (11) and / or the hose body (31) and / or the winding section (33) has a waist or narrowing towards the bag outlet (25) or in the area of ​​the bag outlet (25) and / or that a maximum flow cross-section of the bag outlet (25) is smaller than a maximum intake cross-section of the dust intake chamber (13) in a particularly central area between the bag outlet (25) and the bag inlet (20) and / or that the bag outlet (25) has a slotted shape.

11. Filter bag device (10) according to one of the preceding claims, characterized by the fact thatThe winding-fixing device (50) in the fixing position does not encompass or chamber the winding (34) in an area of ​​the winding (34) opposite the bag outlet (25) to a maximum of 80% and / or the winding (34) in the winding position (W) with the winding-fixing device (50) in the fixing position is movable in an area opposite the bag outlet (25) in such a way that a part of the tube section is movable and facilitates or increases the mobility of at least one wall of the filter bag (11) opening into the tube section.

12. Filter bag device (10) according to one of the preceding claims, characterized by the fact thata winding aid (38) facilitating the winding of the winding (34), in particular a depression or a wave-like reinforcement extending transversely to a winding direction (WR) or longitudinal extension (L) of the hose body (31) provided for winding the winding section (33), is arranged for winding the winding (34).

13. Filter bag device (10) according to one of the preceding claims, characterized by the fact that a sealing element (27A) or a membrane (27C) for sealing is arranged at the passage opening (23) of the connection adapter (21) on the pipe body (77A) of the suction device (70) and / or that the passage opening (23) is surrounded by a narrow side of the wall body (26).

14. Suction device (70) with a filter bag device (10) according to one of the preceding claims, wherein the suction device (70) has a suction device receiving chamber (78) in which the filter bag device (10) can be arranged.

15. Suction device (70) according to claim 14, characterized by the fact that at least a part of the winding fixing device (50) is arranged on the suction device (70) or is formed by the suction device (70) and / or that the suction device receiving chamber (78) has a receiving volume for receiving the filter bag device (10), wherein the receiving volume is geometrically designed such that it can receive the filter bag device (10) when the dust receiving chamber (13) of the filter bag device (10) is already filled to at least 70%, preferably at least 80%, even more preferably at least 90% or 100% of its volume.

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