Device for holding a vacuum cleaner filter bag in a vacuum cleaner, and holding plate for a vacuum cleaner filter bag

Abstract

The present invention relates to a vacuum cleaner filter bag comprising a filter medium and a retaining plate firmly connected to the filter medium, which is designed for holding by a device for holding a vacuum cleaner filter bag in a vacuum cleaner, wherein the device comprises a locking element pivotable between an open position and a closed position, which includes a locking hook and an engagement element.The retaining plate comprises a latching-hook bearing section formed in a first edge section of the retaining plate, and a first key section formed in the first edge section, wherein the latching-hook bearing section is configured to interact with the latching hook of the locking element so that the locking element latches with the latching-hook bearing section in the closed position, and wherein the first key section is configured to interact with the engagement element so that the retaining plate is held in the predetermined position when the locking element is in the closed position.

Description

[0001] The present invention relates to a vacuum cleaner filter bag comprising a filter medium and a retaining plate firmly connected to the filter medium, which is designed for holding by a device for holding a vacuum cleaner filter bag in a vacuum cleaner.

[0002] Conventional vacuum cleaner filter bags typically consist of an air-filtering filter medium and a retaining plate connected to the filter medium, which serves to connect the filter bag to the vacuum cleaner. The retaining plate has an opening through which the airflow, laden with dust and dirt, is drawn into the filter bag during vacuuming. To ensure proper vacuum cleaner operation, the vacuum cleaner and vacuum cleaner filter bag must be compatible. For example, the filter bag needs to be the correct size to achieve optimal space utilization within the vacuum cleaner's dust collection chamber and to maximize the filter bag's capacity for dust and dirt. For this reason, manufacturers are increasingly ensuring that vacuum cleaners can only be used with filter bags specifically designed for that particular vacuum cleaner.

[0003] From EP 2 744 383 A1, a retaining plate for a vacuum cleaner filter bag is known, which has a key formed in it on one side and a concave recess on the opposite side, each on the outer lateral edge. In one mounting position, a spring on the device side presses laterally into the concave recess of the retaining plate, so that the key is pressed against a correspondingly designed lock in the housing of the stick vacuum cleaner. A positive engagement occurs between the key and the lock, so that the retaining plate is held in position. By coding the retaining plate with a key that must fit into the device-side lock, it is prevented that a filter bag unsuitable for the vacuum cleaner is used.

[0004] Changing a vacuum cleaner bag with these features requires many, sometimes complicated, steps. For example, when inserting a new, empty filter bag, the retaining plate must first be carefully pushed into a narrow slot in the retaining plate holder. Furthermore, the retaining plate can easily become jammed during removal due to the spring force acting only on one side.

[0005] In view of this, it is an object of the present invention to provide a vacuum cleaner filter bag comprising a filter medium and a retaining plate firmly connected to the filter medium, in which possible tilting of the retaining plate is avoided and handling is simplified.

[0006] This problem is solved by a vacuum cleaner filter bag according to claim 1. Further aspects are found in the dependent claims.

[0007] The retaining plate of the vacuum cleaner filter bag is designed for holding by a device for holding a vacuum cleaner filter bag in a vacuum cleaner.The device comprises a retaining plate receptacle for receiving a retaining plate of the vacuum cleaner filter bag on a support surface of the retaining plate receptacle, and a locking element pivotable between an open position and a closed position, wherein the locking element comprises a locking hook, the locking hook being configured to engage a retaining plate received on the retaining plate receptacle in a closed position of the locking element, so that the locking element is held in the closed position, and wherein the locking element comprises on a side facing the retaining plate receptacle an engagement element configured to engage with a key section of the retaining plate, so that the locking element, in its closed position, holds the retaining plate received by the retaining plate receptacle in a predetermined position.

[0008] These features simplify handling for the vacuum cleaner user, especially when inserting and removing the vacuum cleaner filter bag, because the retaining plate cannot become misaligned. Instead of having to slide the vacuum cleaner filter bag retaining plate into a narrow slot, it is sufficient to simply place it onto the retaining plate receptacle. The engagement element, which interlocks with a key section of the retaining plate, holds the retaining plate in a predetermined position on the receptacle when the locking element is in the closed position. In effect, the engagement element acts as the lock, which engages with the key section of the retaining plate. If necessary, the retaining plate may only need to be slightly adjusted to ensure a clean engagement with the engagement element.Furthermore, the force holding the retaining plate in the predetermined position does not act laterally, thus preventing any tilting of the retaining plate. When removing the vacuum cleaner filter bag, it can simply be lifted out of the vacuum cleaner without the risk of it tilting or having to be threaded out of a slot-like insert.

[0009] The mounting plate receptacle serves to hold the mounting plate. The mounting plate receptacle has a support surface that accommodates the mounting plate, for example, by placing the mounting plate onto the support surface. The support surface can be flat. This allows for a simple design of the mounting plate receptacle. The mounting plate can be placed onto the mounting plate receptacle from above and removed in the same way. A mounting plate held by the mounting plate receptacle rests on the support surface of the mounting plate receptacle.

[0010] If the mounting plate has a structure, the contact surface can still be considered a plane if a flat mounting plate rests on / is arranged on the contact surface. For example, the contact surface can be the plane defined by the points of contact between the mounting plate and the mounting plate.

[0011] The locking element can pivot between an open and a closed position. Therefore, the locking element can have a pivot axis. The pivot axis can lie in the plane of the mounting surface of the retaining plate. Alternatively, the pivot axis can be located above the mounting surface of the retaining plate.

[0012] A snap hook (also known as a latch hook) is a component used for the positive locking of parts. A snap hook can include an insert that engages with the part to be joined, creating the locking connection. For example, the insert can be a projection on the snap hook designed to engage with the other part. The snap hook may have elasticity, allowing it to deform when pressed against the retaining plate. Subsequently, an insert of the snap hook engages with the retaining plate, thus creating the positive locking connection. The locking connection can be reversible, as the positive locking between the retaining plate and the snap hook can be released.

[0013] The engagement element, which is formed on or in the locking element, is designed to hold the retaining plate in the specified position when the locking element is in the closed position. For this purpose, the engagement element is brought into engagement with the key section of the retaining plate. Possible configurations of the engagement element and the retaining plate are described below. The retaining plate and the engagement element can interlock in a form-fitting manner. Alternatively, the engagement can allow freedom of movement, so that the retaining plate remains movable (slidable) on the retaining plate receptacle. This can be achieved, for example, by leaving a gap between the engagement element and the key section when the two elements are engaged.

[0014] The terms "interlock" and "be brought into intervention" are to be understood as synonymous within the context of this description.

[0015] The specified position is the position on the mounting plate in which the mounting plate must be positioned for the vacuum cleaner to function as intended. Specifically, this means that the dust-laden air, drawn through a suction hose and / or nozzle, is directed through an opening in the mounting plate into the vacuum cleaner's filter bag. In this case, the opening in the mounting plate is positioned in relation to the suction hose or its associated nozzle.

[0016] The retaining plate receptacle can further include a bearing element designed to hold the retaining plate against movement perpendicular to the mounting surface of the retaining plate receptacle. The bearing element can also be designed to hold the retaining plate against lateral movement on the retaining plate receptacle parallel to the mounting surface.

[0017] In other words, the bearing element can be designed to hold / fix the retaining plate against movement perpendicular to the support surface, and against movement parallel to the support surface. Thus, the bearing element restricts movement of the retaining plate along at least two axes. These two axes are, incidentally, perpendicular to each other.

[0018] When the locking element and the retaining plate are engaged, it is advisable, for improved stability, to secure the retaining plate against any lateral or sideways displacement on the retaining plate receptacle and / or against removal from the receptacle. Furthermore, the bearing element defines the predetermined position of the retaining plate on the receptacle, thus providing the user with guidance on how to insert the retaining plate. This simplifies correct handling for the user and prevents any incorrect insertion of the retaining plate.

[0019] The bearing element can be a rigid component of the mounting plate. Alternatively, the bearing element can be a flexible component of the mounting plate and, for example, pivot into its intended bearing position, in which the mounting plate is fixed, when the mounting plate is arranged on the mounting plate.

[0020] The advantage of this arrangement of the bearing element is that the mounting plate can be freely placed on the mounting plate receptacle without being obstructed by the bearing element. This further increases user comfort.

[0021] The device may further include a spring element that exerts a spring force pushing the locking element towards the open position. Alternatively, the spring element may exert a force that opposes a holding force of the latching hook.

[0022] If the locking hook is not engaged with the retaining plate, the spring force will eventually push the locking element into the open position, or at least towards the open position. If the locking hook is engaged with the retaining plate, the locking element is held in the closed position against the spring force by the locking mechanism. The retaining plate is secured by the bearing element so that the spring force does not lift the retaining plate from its receptacle.

[0023] The spring element may include a torsion spring, a coil spring, a helical spring, a wheel spring, a bow spring, a rod spring or a leaf spring, or a combination of the aforementioned spring types.

[0024] The spring element can be attached to the mounting plate and / or the locking element. Alternatively, the spring element can also be attached to another component, for example, the vacuum cleaner housing. In the embodiment of a torsion spring, the center of the torsion spring can be located on the pivot axis of the locking element. One of the two legs of the torsion spring presses against the locking element, while the other leg presses against the mounting plate or the housing.

[0025] When the locking mechanism between the locking element and the retaining plate is released, the locking element opens automatically due to spring force and does not need to be opened by the user in a separate handling step. This simplifies the use of the device.

[0026] The engagement element can include one or both of the following configurations. The engagement element can include a projection that engages with a recess in the retaining plate when the locking element is in the closed position. The engagement element can include a clamp that grips a projection in the retaining plate when the locking element is in the closed position. The second option can also mean that the clamp partially rests against the projection in the retaining plate when the locking element is in the closed position.

[0027] All of the aforementioned methods ensure that the retaining plate is securely held in the specified position through the interlocking of the engagement element and the projection / recess in the retaining plate. Furthermore, a positive fit can also be achieved in this way. This retaining principle is applicable both to a flexible design of the retaining plate and to the specific matching of the retaining plate and the engagement element. This latter point allows for a so-called coding system, whereby those retaining plates can be used with the device that exhibit this interlocking action through a specific pattern of projections and recesses.

[0028] The engagement element can comprise multiple protrusions and / or clamps. In particular, the respective number can correspond to the number of protrusions and recesses in the retaining plate.

[0029] The locking element can further comprise two locking hooks (a first locking hook and a second locking hook) arranged such that they engage on different sides of the retaining plate. This can also mean that the two locking hooks are arranged on different, in particular opposite, sides of the locking element.

[0030] A second locking hook, which engages with the mounting plate, reduces the load on each individual locking hook and increases the stability and reliability of the device. This is because damage to one locking hook becomes less likely, and in case of damage, a second locking hook is available. Furthermore, if the locking mechanism engages on opposite sides of the mounting plate, uneven stress on the mounting plate caused by a one-sided pull from the locking hook is avoided, as the force of the locking hook acts symmetrically on the mounting plate, rather than unilaterally. This also improves the stability of the device.

[0031] The device can also include a stop element, which is part of the locking element and is designed such that when the retaining plate strikes the stop element, the locking element pivots from the open position towards the closed position. In a preferred embodiment, striking the retaining plate against the stop element can also cause the locking element to pivot completely into the closed position. This can also result in the locking hook engaging with the retaining plate. In particular, the stop element can be part of the locking element.

[0032] The stop element can serve as an indicator that the retaining plate is in the predefined position on the retaining plate receptacle. The user can easily see that the retaining plate has been correctly inserted by observing the triggered pivoting of the locking element. This ensures correct use of the vacuum cleaner by reliably placing the retaining plate in the correct / predefined position. Furthermore, to hold the retaining plate in the predefined position, the locking element must pivot into the closed position. This can be done at least partially automatically with the help of the stop element. In a preferred embodiment, it is also possible for the stop element to pivot completely into the closed position when the user moves the retaining plate into the predefined position, which improves user comfort and facilitates the handling of the device.

[0033] The following describes a retaining plate for a vacuum cleaner filter bag, as it can be used in the device explained above.

[0034] The retaining plate for a vacuum cleaner filter bag is designed for retention by one of the devices described above. The retaining plate comprises a latching-hook bearing section formed in a first edge section of the retaining plate and a first key section formed in the first edge section, wherein the latching-hook bearing section is designed to interact with the latching hook of the locking element so that the locking element engages with the latching-hook bearing section in the closed position, and wherein the first key section is designed to interact with the engagement element so that the retaining plate is held in the predetermined position when the locking element is in the closed position.

[0035] The retaining plate can be configured to be received by the retaining plate receptacle of the devices described above. Furthermore, the retaining plate can be configured to interact with the locking element of the device such that the locking hook engages with the locking hook bearing section, and to interact with the engagement element such that the first key section, together with the engagement element, ensures that the retaining plate is held in the predetermined position. The engagement element can be brought into engagement with the first key section.

[0036] Furthermore, coding can be implemented via the described shape of the retaining plate. The detent-hook bearing section and the first key section ensure that the retaining plate and the locking element of the device only interact as described when the key section is aligned with the engagement element and the detent-hook bearing section is aligned with the position of the detent hook. Otherwise, the locking element cannot be moved into the closed position because, for example, the retaining plate and the locking element might block each other. Additionally, a detent must be present between the detent hook and the retaining plate at the detent-hook bearing section. If these two elements are not aligned, no detent can occur, and the locking element will not be properly held in the closed position.This effect becomes even more pronounced if the device continues to have a spring element as described, because the closing element is then always pivoted into the open position.

[0037] This ensures that the vacuum cleaner is only used in combination with a suitable vacuum cleaner filter bag that has a retaining plate designed for the device. Using an incorrect retaining plate will prevent the locking mechanism from being properly closed.

[0038] The retaining plate can further comprise a second key section formed in a second edge section of the retaining plate, wherein the first edge section is opposite the second edge section, and wherein the second key section is configured to interact with the engagement element so that the retaining plate is held in the predetermined position when the locking element is in the closed position. The engagement element can be brought into engagement with the second key section.

[0039] The key sections formed in both edge segments allow the locking element to engage at either edge. This improves the stability of the retaining plate's mounting on the retaining plate receptacle.

[0040] The retaining plate may further include a latch release section adjacent to the latch bearing section and also formed in the first edge section of the retaining plate, wherein the latch release section is designed to release the latch because no latching with the latch takes place.

[0041] The width of the latching hook bearing section can correspond to the width or length of the latching hook. In particular, the width of the latching hook bearing section can correspond to the width or length of the joining part of the latching hook.

[0042] The positive locking mechanism between the locking hook and the retaining plate (or the locking hook bearing section) is thus detachable, and in particular, reversibly detachable. Since the locking hook bearing section and the locking hook release section are adjacent, i.e., arranged side by side in the first edge section of the retaining plate, a displacement of the retaining plate causes the locking hook to no longer be engaged at the locking hook bearing section, but rather to be released at the locking hook release section. Consequently, the locking connection can be released by displacing the retaining plate. Because the locking hook bearing section and the locking hook release section are adjacent, even a slight displacement is sufficient. Such a slight displacement can correspond, in particular, to the width or length of the locking hook or its connecting part.For the user, this simplifies the handling of the mounting plate and device, as the locking mechanism can be easily achieved by a slight movement of the mounting plate.

[0043] The first key section and the second key section can comprise multiple projections, as well as recesses arranged between two adjacent projections. In particular, each key section can comprise two, three, four, or more projections. Correspondingly, each key element can comprise one, two, three, or more recesses. In this sense, the first and second key sections correspond to the previously introduced projection and / or recess used to define the engagement element. In other words, the engagement element meshes with the first key section, or with the first and second key sections of the retaining plate.

[0044] The projections and recesses ensure a secure interlock between the engagement element and the key sections. Furthermore, the interlocking mechanism increases the stability of the holder when multiple projections and recesses are involved. A greater number of projections can contribute to improved stability of the holder in the described device for holding a vacuum cleaner filter bag. The projections can be essentially rectangular or trapezoidal in shape. These shapes are well-suited to being gripped by a clamp of the engagement element, thus enhancing the holder's stability.

[0045] The individual projections of the key sections can be identical. The individual projections can differ in their shape and / or size. Furthermore, the spacing between adjacent projections, where the spacing is determined by the width of the corresponding recesses, can be the same or different in one or both key sections.

[0046] The projections of the first key section and the second key section can be elastic.

[0047] This feature is advantageous when a positive fit exists between the engagement element and the key sections when the locking element is in the closed position. A positive fit, by its very nature, prevents any further movement of the retaining plate on the retaining plate receptacle. However, if the projections that engage with the engagement element are elastic, a (slight) movement of the retaining plate can still occur without affecting the positive fit. This movement may be sufficient to release the locking hook from the retaining plate by allowing the locking hook to move into the area of ​​the locking hook release section, thus enabling the locking element to move into the open position and releasing the positive fit.

[0048] The retaining plate can be mirror-symmetrical with respect to the first key section and the second key section.

[0049] The first key section, or the first key section and the second key section, can be located at one end or termination of the first (second) edge section. The locking hook bearing section can be spatially separated from the corresponding key section within the respective edge section.

[0050] In the second edge section of the retaining plate, a further locking hook bearing section can be formed. In particular, a further locking hook release section is formed adjacent to this further locking hook bearing section. Not only can the first key section and the second key section be congruent, but this can also apply to the locking hook bearing section and the further locking hook bearing section, as well as the locking hook release section and the further locking hook release section. Optionally, the first edge section of the retaining plate and the second edge section of the retaining plate are congruent. In a preferred embodiment, the retaining plate can be mirror-symmetrical with respect to the first edge section and the second edge section.

[0051] As with the key sections, using a second locking hook also results in a better distribution of the locking force and reduces uneven stress on the retaining plate. This is particularly true when the locking hooks engage at different edge sections. In this case, the locking force is not applied unevenly. A further advantage is that even if one locking hook is damaged, the retaining plate and device can still be used with the second / additional locking hook.

[0052] The retaining plate can be symmetrical with respect to a plane that is parallel to a thickness direction of the retaining plate.

[0053] The retaining plate may still have a grip section where the retaining plate has a local thickening.

[0054] As explained previously, the locking mechanism between the retaining plate and the locking hook of the locking element can be released by sliding it. The user can easily grasp the retaining plate at the handle section and pull accordingly. The local thickening provides the user with a good grip on the retaining plate.

[0055] The mounting plate can be made from recycled and / or renewable materials. Recycled materials include, for example, reused (recycled) plastic. Renewable materials include, in particular, paper, cardboard, hay, or other plant-based materials. Examples of recycled plastic are recycled polypropylene (rPP), recycled polyethylene (rPE), recycled polyethylene terephthalate (rPET), or mixtures thereof. Specifically, it can be recycled plastics that comply with one or more of the DIN standards EN 15342:2008-02, EN 15344:2008-02, EN 15345:2008-02, or EN 15346:2015-01.

[0056] Vacuum cleaner filter bags, including the retaining plate, can be disposable. This means they may be designed to be thrown away after use when full. Therefore, for sustainability reasons, it is advantageous to manufacture at least the retaining plate from one of the aforementioned materials.

[0057] The invention relates to a vacuum cleaner filter bag comprising a filter medium, in particular a nonwoven fabric, and a retaining plate firmly connected to the filter medium, wherein the retaining plate is a retaining plate as previously described. The connection between the retaining plate and the filter medium can be airtight. The connection can be an adhesive bond, a clamping connection, or a welded connection. The vacuum cleaner filter bag can be a flat bag.

[0058] A vacuum cleaner is also proposed comprising a housing with a lid and the described device for holding a vacuum cleaner filter bag, wherein the device is arranged in a dust collection chamber of the vacuum cleaner, wherein the lid is pivotably attached to the housing and is provided for closing the dust collection chamber, wherein the lid of the housing is closable when the closing element is in the closed position, and wherein the lid of the housing is not closable when the closing element is in the open position.

[0059] The locking element in the open position prevents the housing lid from being closed. For example, the lid might be a pivoting part of the housing that latches to the rest of the housing for closure. The locking element in the open position can block the lid's pivoting by protruding from the housing in the open position, thus preventing the lid from latching to the rest of the housing.

[0060] The locking element remains in the open position if a spring element is present and no retaining plate is mounted on the retaining plate receptacle, because the locking hook cannot engage and the spring force pushes the locking element towards the open position. Consequently, if the lid cannot be closed and remains open, vacuuming cannot occur because the vacuum cleaner draws ambient air into the fan through the open lid and achieves no suction. This effectively prevents damage to the vacuum cleaner caused by vacuuming without a dust bag, which can be caused in particular by dust and dirt entering the fan.

[0061] A described retaining plate can be arranged on the mounting plate of the device, which is located in the dust collection chamber of the vacuum cleaner, wherein the retaining plate, in the closed position of the locking element, when the engagement element engages with the first key section or the first key section and the second key section of the retaining plate, can be moved away from a pivot axis of the locking element by no more than 2 mm, in particular no more than 1 mm.

[0062] The interlocking of the engagement element and the projections or recesses in the retaining plate does not necessarily constitute a positive fit. The retaining plate may be movable a short distance from the pivot axis of the locking element. This can be achieved through an interlocking mechanism in which the retaining plate has a corresponding degree of freedom of movement due to a gap between the engagement element and the projections of the key section(s). Alternatively, the projections of the key sections may be elastic, allowing the retaining plate to remain movable even with a positive fit. While the retaining plate is positioned in the predetermined position on the retaining plate receptacle and the locking element is in the closed position, the locking hook(s) is / are engaged with the locking hook bearing section of the retaining plate.When the retaining plate is moved on the retaining plate receptacle, this locking mechanism is released, and the locking hook(s) reach the locking hook release section. Since no further locking is possible there, the locking element can be opened. This can be done either manually or by a previously mentioned spring element. In summary, the limited movement of the retaining plate allows for easy release of the locking mechanism with the locking element.

[0063] A method for inserting a vacuum cleaner filter bag into a vacuum cleaner is also proposed, wherein the vacuum cleaner filter bag comprises a previously described retaining plate. The method comprises providing a described device, wherein the closing element is in the open position, placing the retaining plate onto the retaining plate receptacle, closing the closing element by pivoting it into the closed position, whereby the locking hook engages with the retaining plate and the engagement element with the first key section and the second key section in the retaining plate engages with each other, such that the closing element is held in the closed state and the retaining plate is held in a predetermined position on the retaining plate receptacle.

[0064] For the user, the method with the described retaining plate and device offers a handling advantage because, unlike in the prior art, the retaining plate does not need to be threaded into a slot, but simply placed onto the retaining plate receptacle. When the locking element pivots from the open to the closed position, the engagement element and the first and second key sections interlock, thus holding the retaining plate in the predetermined position. Any deviation between the predefined position and the support position can be compensated for by the fact that, as the engagement element and the key section(s) interlock, the retaining plate is automatically moved into the predetermined position. Furthermore, the locking element cannot latch in the closed position if no retaining plate is positioned on the retaining plate receptacle.

[0065] Furthermore, a method for removing a vacuum cleaner filter bag from a vacuum cleaner is proposed, wherein the vacuum cleaner filter bag comprises a previously described retaining plate. The method comprises providing a described device for holding a vacuum cleaner filter bag in a vacuum cleaner, wherein the closing element is in the closed position and the retaining plate is arranged on the retaining plate receptacle, pulling the retaining plate in a direction parallel to the plane of the retaining plate receptacle so that the locking mechanism between the retaining plate and the locking hook(s) is released, pivoting the closing element into the open position, and removing the vacuum cleaner filter bag.

[0066] Removing the vacuum cleaner filter bag also offers a handling advantage for the user, because the retaining plate is exposed in the open position of the closing element, allowing the vacuum cleaner filter bag to be easily removed (upwards) from the dust collection chamber. For example, it is not necessary to thread the retaining plate out of a slot.

[0067] The locking element can pivot automatically after the latch is released. A spring element, for example, is suitable for this purpose, as it exerts a spring force that pushes the locking element towards the open position. This saves the user from having to pivot it manually and increases ease of use.

[0068] Furthermore, the following items are also proposed in connection with the vacuum cleaner filter bag according to the invention: Item 1: Device for holding a vacuum cleaner filter bag in a vacuum cleaner, the device comprising: a retaining plate receptacle for receiving a retaining plate of the vacuum cleaner filter bag on a support surface of the retaining plate receptacle, and a locking element pivotable between an open position and a closed position, wherein the locking element comprises a locking hook, wherein the locking hook is configured to engage a retaining plate received on the retaining plate receptacle in a closed position of the locking element (4), so that the locking element is held in the closed position by the locking hook, and wherein the locking element comprises on a side facing the retaining plate receptacle an engagement element configured to engage with a key section of the retaining plate,so that the locking element, in its closed position, holds the retaining plate received by the retaining plate receptacle in a predetermined position. Item 2: Device according to Item 1, wherein the retaining plate receptacle further comprises a bearing element configured to hold the retaining plate against movement perpendicular to the bearing surface of the retaining plate receptacle, and / or wherein the bearing element is configured to hold the retaining plate against lateral movement on the retaining plate receptacle parallel to the bearing surface. Item 3: Device according to Item 1 or 2, further comprising a spring element that exerts a spring force that pushes the locking element in the direction of the open position. Item 4: Device according to any one of the preceding Items 1 to 3, wherein the engagement element comprises: a projection that engages with a recess in the retaining plate when the locking element is in the closed position,and / or a clamp that engages a projection in the retaining plate when the locking element is in the closed position. Item 5: Device according to any one of the preceding items 1 to 4, wherein the locking element further comprises two locking hooks arranged such that they engage on different sides of the retaining plate, in particular opposite sides of the retaining plate. Item 6: Device according to any one of the preceding items 1 to 5, further comprising a stop element that is part of the locking element and is configured such that an abutment of the retaining plate against the stop element causes the locking element to pivot from the open position towards the closed position. Item 7: Retaining plate for a vacuum cleaner filter bag, configured for retention by a device according to any one of the preceding claims.wherein the retaining plate comprises: a latching-hook bearing section formed in a first edge section of the retaining plate, and a first key section formed in the first edge section, wherein the latching-hook bearing section is configured to interact with the latching hook of the locking element such that the locking element latches with the latching-hook bearing section in the closed position, and wherein the first key section is configured to interact with the engagement element such that the retaining plate is held in the predetermined position when the locking element is in the closed position. Item 8: Retaining plate according to Item 7, further comprising a second key section formed in a second edge section of the retaining plate, wherein the first edge section is opposite the second edge section, and wherein the second key section is configured to interact with the engagement element.so that the retaining plate is held in the predetermined position when the locking element is in the closed position. Item 9: Retaining plate according to item 7 or 8, further comprising a latch hook release section adjacent to the latch hook bearing section and formed in the first edge section of the retaining plate, wherein the latch hook release section is configured to release the latch hook because no latching with the latch hook occurs. Item 10: Retaining plate according to any one of items 7 to 9, wherein the first key section and / or the second key section comprise a plurality of projections, as well as recesses arranged between two adjacent projections. Item 11: Retaining plate according to any one of items 8 to 10, wherein the retaining plate is mirror-symmetrical with respect to the first key section and the second key section. Item 12: Retaining plate according to any one of items 8 to 11,wherein a further locking hook bearing section is formed in the second edge section, wherein a further locking hook release section adjacent to the further locking hook bearing section is arranged in the second edge section, and wherein optionally the retaining plate is mirror-symmetrical with respect to the first edge section and the second edge section. Item 13: Retaining plate according to one of items 7 to 12, comprising a material made of recycled materials and / or renewable raw materials. Item 14: Vacuum cleaner comprising a housing with a lid and a device according to one of items 1 to 6, wherein the device is arranged in a dust collection chamber of the vacuum cleaner, wherein the lid is pivotably attached to the housing and is provided for closing the dust collection chamber, wherein the lid of the housing is closable when the closing element is in the closed position, and wherein the lid of the housing is not closable.when the locking element is in the open position. Item 15: Vacuum cleaner according to Item 14, wherein a retaining plate according to one of Items 7 to 13 is further arranged on the retaining plate receptacle of the device, wherein the retaining plate, in the closed position of the locking element, when the engagement element engages with the first key section or the first key section and the second key section of the retaining plate, is movable away from a pivot axis of the locking element by no more than 2 mm, in particular no more than 1 mm.

[0069] Further features and advantages are explained below using the example figures. These show: Figure 1 shows a retaining plate for a vacuum cleaner filter bag according to a first embodiment in a top view; Figure 2 shows a retaining plate for a vacuum cleaner filter bag according to a second embodiment in a top view; Figure 3 shows a device for holding a vacuum cleaner filter bag in a vacuum cleaner with the closing element in the open position in an oblique view; Figure 4 shows the device together with a retaining plate and the closing element in the closed position in an oblique view; and Figure 5 shows a vacuum cleaner comprising a device for holding a vacuum cleaner filter bag in a vacuum cleaner and a retaining plate in an oblique view.

[0070] In the following and in the figures, unless otherwise specified, the same reference numerals are used for identical or corresponding features in the various embodiments.

[0071] Figure 1Figure 1 shows a top view of a retaining plate 2 for a vacuum cleaner filter bag 1 according to a first embodiment. The top side of the retaining plate 2 is shown. The vacuum cleaner filter bag 1 itself comprises a filter medium and a retaining plate 2 connected to the filter medium, the connection being adhesive, clamping, or welding. The retaining plate 2 has an opening 14 through which the suction airflow, laden with dirt and dust, is directed into the filter medium during vacuuming. A seal 15, which is made of or comprises, for example, a thermoplastic elastomer, is located around the opening 14. The vacuum cleaner filter bag 1 can be a flat bag.

[0072] The retaining plate 2 has a first edge section 9a and a second edge section 9b, the first edge section 9a being opposite the second edge section 9b. The opening 14 can be arranged between the first edge section 9a and the second edge section 9b.

[0073] On or in the first edge section 9a there is initially a latching hook bearing section 12a, which is designed with the latching hook of a device as described in relation to the Figures 3 and 4As described in detail below, the latching hooks interact in such a way that the latching hook engages with the retaining plate 2 at the latching hook bearing section 12a. In the example shown, the first edge section 9a has a concave recess for this purpose. The latching hook bearing section 12a is that part of the concave recess that results in a decreasing width of the retaining plate 2. The upper part of the concave recess shown in the figure is particularly relevant as the latching hook bearing section 12a, as will become clear in the further description. Adjacent to the latching hook bearing section 12a, a latching hook release section 13 is located in the first edge section 9a. Here, no latching occurs between the retaining plate 2 and the latching hook, so the latching hook is released. In the case of a concave recess, the latching hook release section 13 is specifically the section around the local minimum width of the retaining plate 2.

[0074] Other shapes are also conceivable for the latching hook bearing section 12a and the latching hook release section 13. It is important that a local curvature exists in the first edge section 9a. For example, a convex projection or a rectangular or trapezoidal recess is also possible (for which a definition as concave or convex is not necessarily applicable because the radius of curvature is zero).

[0075] As can be seen, the locking hook bearing section 12a and the locking hook release section 13 are adjacent to each other. This has the advantage that the locking of the retaining plate 2 with the locking hook can be released by a slight displacement of the retaining plate 2. When the locking hook is engaged with the locking hook bearing section 12a, the retaining plate 2 can be displaced, for example, essentially parallel to the first edge section 9a, so that the locking hook no longer rests against the locking hook bearing section 12a, but is located in the area of ​​the locking hook release section 13. However, no locking occurs between the locking hook 12 and the retaining plate 2 in this position, so the locking hook is exposed (engaging without contact). The locking mechanism is therefore released.

[0076] The width of the latching hook bearing section 12a can correspond to the width or length of the latching hook. In particular, the width of the latching hook bearing section 12a can correspond to the width or length of the joining part of the latching hook. The joining part of the latching hook is shown in Figure 3.

[0077] Furthermore, a first key section 8 is formed in the first edge section 9a. This section comprises a plurality of projections 8a. These projections 8a lie in a plane of the retaining plate 2 or parallel to the bearing surface. The projections 8a can be rectangular or trapezoidal (also referred to as teeth). However, this does not restrict the shape of the projections 8a. A recess 8b is located between two adjacent projections 8a or teeth. The first key section 8 shown has a total of four projections 8a and three recesses 8b, but other suitable values ​​can also be used.

[0078] In the second boundary section 9b, a second key section 8 is formed. The same considerations apply to the second key section 8 as to the first key section 8. The two key sections can be symmetrical or congruent. In other words, the retaining plate 2 is mirror-symmetrical with respect to the two key sections 8. However, the two key sections can also differ in their shape.

[0079] The two key sections are designed to interact with an engagement element of the device, so that the retaining plate 2 is held in a predetermined position. In particular, this holding / fixing is achieved by an interlocking action between the engagement element and the key sections (see Figure 4Since the key sections are formed in both edge sections 9a, 9b of the retaining plate 2, the retaining is not only on one side and the retaining plate can be better secured against displacement, in particular rotation.

[0080] The first key section 8 and the second key section 8 also serve as a code to ensure that only retaining plates with the correct key section can be used in combination with a device described below. This effectively prevents the use of unsuitable vacuum cleaner filter bags in a vacuum cleaner. This aspect will be explained in more detail below.

[0081] The retaining plate 2 also features a grip section 18. This can be formed on a third edge section of the retaining plate 2. The grip section 18 has a local thickening. In other words, the retaining plate 2 has a greater thickness in the area of ​​the grip section. In this area, a user can easily grip the retaining plate 2 and pull it in a direction parallel to the contact surface. This step is necessary to release the locking mechanism between the retaining plate 2 and the locking hook. The grip section thus improves the handling of the retaining plate 2 for a user. Alternatively, instead of thickening this edge section, it is conceivable to achieve better grip by textured surfaces on the retaining plate and potentially omit the thickening altogether.

[0082] Figure 2Figure 1 shows a retaining plate 2 according to a second embodiment. This largely corresponds to the first embodiment, so a further explanation is omitted here. One difference is that a further locking hook bearing section 12a is formed on or in the second edge section 9b. Adjacent to the further locking hook bearing section 12a, a further locking hook release section 13 is also formed on or in the second edge section 9b. The further locking hook bearing section 12a and the further locking hook release section 13 fulfill the same functions and have the same properties as previously described with regard to the locking hook bearing section 12a and the locking hook release section 13. Thus, a locking action can be achieved between the retaining plate 2 and two locking hooks, wherein a first locking hook engages with the locking hook bearing section 12a and a second locking hook engages with the further locking hook bearing section 12a.

[0083] A locking mechanism on both edge sections of the retaining plate 2 has the advantage of a better distribution of the force acting on the retaining plate, which is exerted by the locking hooks 12 and the force is not applied to one side of the retaining plate 2.

[0084] The first edge section 9a and the second edge section 9b can be symmetrical or congruent. Overall, the retaining plate 2 can be mirror-symmetrical with respect to both edge sections 9a and 9b. Such a symmetrical design not only has the aforementioned advantage of better force distribution, but also simplifies the manufacture and storage of the retaining plate compared to an asymmetrical design.

[0085] Figure 3Figure 1 shows a device 20 for holding a vacuum cleaner filter bag 1 in a vacuum cleaner in an oblique view. The device 20 comprises a retaining plate receptacle 5 with a support surface and a locking element 4. The locking element 4 is pivotable between a closed position and an open position. Figure 3 shows the locking element 4 in the open position.

[0086] The retaining plate receptacle 5 is designed to receive a retaining plate of a vacuum cleaner filter bag on the support surface of the retaining plate receptacle 5. For this purpose, the retaining plate can, for example, be placed on the support surface of the retaining plate receptacle 5. Compared to slot-like inserts for the retaining plate known in the prior art, the insertion of the retaining plate is considerably simplified with the device shown, because the user no longer has to thread the retaining plate into the insert, but simply needs to place the retaining plate onto the retaining plate receptacle 5. The retaining plate receptacle 5 has a recess (with opposite hatching in Figure 3(shown), which is located below the opening of the mounting plate when this mounting plate is positioned on the mounting plate receptacle. This serves the purpose of ensuring that a filter medium attached to the mounting plate has sufficient space and that the dust-laden air can be directed through the opening into the filter medium.

[0087] The locking element 4 has an engagement element 10 on one edge section facing the retaining plate receptacle 5. This engagement element is designed to engage with a recess and / or a projection in the retaining plate. Specifically, this means for the retaining plate made of the Figures 1 and 2that the engagement element 10 comprises at least one projection that can engage with the recess in the retaining plate, and / or that the engagement element 10 comprises at least one clamp that can grip a projection in the retaining plate. In the example shown, the engagement element 10 comprises a plurality of projections and clamps, in particular one clamp and two projections. This pattern can thus be complementary to the key section of the retaining plate, which accordingly comprises three recesses. This means that the number of projections and clamps corresponds in particular to the number of recesses and projections in the associated key sections of the retaining plate. The clamps can also engage with a projection in the retaining plate. The exact functions of the engagement element 10 become even clearer when the locking element 4 is in the closed position; see [reference]. Figure 4 .

[0088] Furthermore, a locking hook 12 is arranged on the locking element 4. Like the engagement element 10, the locking hook 12 is also arranged on the side of the locking element 4 that faces the retaining plate receptacle 5. The function of the locking hook 12 is described in connection with Figure 4 This will be explained in more detail. The locking hook comprises an joining element. This is the outer projection of the locking hook 12, which is designed for locking. In a preferred embodiment, the locking hook 12 of the locking element 4 can also extend through a recess in the retaining plate receptacle 5 to achieve a more secure locking action on the retaining plate 2.

[0089] The retaining plate receptacle 5 further comprises a bearing element 16. The bearing element 16 is designed to hold the retaining plate against movement perpendicular to the bearing surface of the retaining plate receptacle 5. The retaining plate therefore cannot be removed upwards, i.e., perpendicular to the bearing surface of the retaining plate receptacle 5. In addition, the bearing element 16 also secures the retaining plate against lateral movements of the retaining plate parallel to the bearing surface of the retaining plate receptacle 5. As a result, the retaining plate 5 can essentially only be moved along one axis. This single axis, along which the retaining plate remains movable, can, for example, be perpendicular to the pivot axis of the locking element. This makes it easier for a user to find the predetermined position of the retaining plate on the retaining plate receptacle.

[0090] The device 20 further comprises a spring element 3. The spring element 3 exerts a spring force on the locking element 4, pressing it towards the open position. The spring element 3 is connected to the locking element 4 and to the retaining plate receptacle 5, but its configuration is not limited to this arrangement, as there are several ways to implement the spring element 3 that achieve the desired effect. For example, as shown in the figure, a torsion spring can be arranged on the pivot axis 11 of the locking element 4, which exerts a torque when the locking element 4 pivots towards the closed position. Alternatively, a torsion or coil spring can also be used. The center of the torsion spring is located on the pivot axis 11, and one of the two legs presses against the locking element 4, while the other leg presses against the retaining plate receptacle 5 or a part of the housing.The connection to the retaining plate receptacle 5 serves to stabilize the suspension of the spring element 3. Alternatively, a curved leaf spring or flat spring can be used, mounted on the bearing surface of the retaining plate receptacle 5. When the locking element 4 is in the closed position, it presses on the leaf spring or flat spring, which in turn exerts a spring force in the direction of the open position.

[0091] Finally, the device 20 includes a stop element 17. The stop element 17 is essentially part of the locking element 4 and is designed such that when the retaining plate abuts the stop element 17, the locking element pivots towards the closed position. For example, the stop element 17 is a projection on the locking element 4 against which the retaining plate abuts in the predetermined position. Since the pivot axis 11 of the locking element 17 does not coincide with the abutment point of the retaining plate, a torque is exerted on the locking element 4, causing it to pivot. The stop element 17 thus serves, among other things, as an indicator that the retaining plate is in the predetermined position on the retaining plate receptacle 5. The user can therefore directly observe the triggered pivoting of the locking element 4, confirming that the retaining plate has been inserted correctly.

[0092] In an alternative embodiment, it is also possible that the contact of the retaining plate with the stop element 17 leads to a complete pivoting of the locking element 4 into the closed position. Thus, when the retaining plate is inserted into the predetermined position on the retaining plate receptacle 5, the locking element 4 is pivoted into the closed position and thereby engages with the retaining plate.

[0093] The locking element 4 can essentially be U-shaped with two legs. The two legs are symmetrical. The retaining plate is therefore mounted symmetrically at its two edges, ensuring optimal support and an even distribution of forces. An advantage of the U-shape is that the two legs securely fix the retaining plate while simultaneously providing sufficient space between them to prevent the opening and seal of the retaining plate from contacting the locking element. The U-shape thus represents an efficient design that does not restrict the function or geometry of the retaining plate.

[0094] In Figure 4 Is the device 20 made of Figure 3The locking element 4 is shown in the closed position. A retaining plate 2 is also shown, which is located on the retaining plate receptacle 5. This can be, in particular, a retaining plate 2 according to the first or second embodiment. Since most of the components have already been explained with reference to Figure 3, they will not be introduced again here.

[0095] As shown in the figure, the engagement element 10 of the locking element 4 and the first key section 8 of the retaining plate 2 interlock, thus holding the retaining plate 2 in the specified position. This interlocking (engagement) can be a positive fit. Here, the interlocking between the engagement element 10 and the key section 8 of the retaining plate is clearly illustrated. The projections of the engagement element 10 engage in the recesses of the retaining plate 2, and the clamps of the engagement element 10 grip the projections in the key section 8 of the retaining plate.

[0096] The locking hook 12 is engaged with the locking hook bearing section 12a of the retaining plate. This holds the locking element 4 in the closed position against the spring force of the spring element 3. The bearing element 16 is also important in this context, as it secures the retaining plate against movement perpendicular to the bearing surface of the retaining plate receptacle 5. In other words, the retaining plate 2 is held on the retaining plate receptacle 5 by the bearing element 16 against the spring force (due to the locking action between the locking element 4 and the retaining plate 2 by the locking hook). This prevents the retaining plate 2 from being lifted upwards away from the retaining plate receptacle 5.

[0097] In one embodiment, the locking element 4 can additionally have a projection that can engage with the recess comprising the latching hook bearing section 12 and the latching hook release section 13. This projection can, in particular, also encompass the latching hook 12. This engagement further improves the stability of the retaining plate's mounting.

[0098] The locking element 4 can be designed such that, in the closed position, an upper surface of the locking element 4 is tangential to a section of the retaining plate receptacle 5. This allows the user to intuitively recognize that the retaining plate 2 is correctly positioned. This ensures that the retaining plate 2, with its seal 15 surrounding the opening 14, is correctly positioned relative to a vacuum cleaner's intake nozzle in all three axes, so that the dust-laden air is completely directed through the opening 14.

[0099] To release the locking mechanism between the locking hook 12 and the retaining plate 2, the retaining plate must be moved on the retaining plate receptacle 5 so that the locking hook 12 moves into the area of ​​the locking hook release section 13. The locking hook 12 is then released, and the spring force of the spring element 3 pushes the locking element 4 into the open position. To allow this movement, it is conceivable that the engagement between the engagement element 10 and the key section 8 of the retaining plate is not a perfect positive fit, but rather allows some freedom of movement for the retaining plate. For example, the projections and clips of the engagement element 10 could leave a (small) gap between the recesses and projections in the key section 8 of the retaining plate. It is also possible that the projections in the key section 8 are elastic.The necessary displacement of the retaining plate 2 can also be achieved through such elasticity of the projections, for example, by pulling with sufficient force on the handle section 18 of the retaining plate 2. The necessary displacement can be less than 2 mm, in particular less than 1 mm.

[0100] The above statements were made for the first key section 8 of the retaining plate 2, but apply in the same way to the second key section 8.

[0101] Finally, it shows Figure 5A vacuum cleaner 7 in connection with the present invention. The vacuum cleaner 7 comprises a housing 7a with a pivotable lid 6, which is provided for closing the dust collection chamber of the vacuum cleaner 7. This is shown in the open position (also called the service position), in which a dust collection chamber arranged inside the housing 7a is exposed. A vacuum cleaner filter bag 1 with a retaining plate 2 is located in the dust collection chamber. The retaining plate 2 is arranged on a retaining plate receptacle 5 of the device 20. The device 20 is the previously described device for holding a vacuum cleaner filter bag in a vacuum cleaner.

[0102] If the locking element 4, as in Figure 3As shown, in the open position, the locking element 4 protrudes upwards. This prevents the cover 6 of the housing 7a from being closed, because the locking element 4 prevents the cover 6 from fully pivoting to engage with the rest of the housing 7a. The locking element 4 thus acts as a so-called suction barrier. As explained previously, the locking element 4 remains in the open position if no vacuum cleaner filter bag 1 is inserted into the stick vacuum 7, because the locking hook 12 cannot engage with the retaining plate 2 of the vacuum cleaner filter bag, and the spring force of the spring element 3 pushes the locking element into the open position. Consequently, the housing 7a, or rather the cover 6, cannot be closed without a vacuum cleaner filter bag inserted.

[0103] Vacuuming cannot be performed with the housing 7a open (or incompletely closed) because the vacuum cleaner 7 draws ambient air into the blower through the open housing 7a and consequently does not develop any suction. Damage to the vacuum cleaner 7 or the blower from the intake of dust and dirt can thus be reliably prevented, because the vacuum cleaner cannot be used for vacuuming without the vacuum cleaner filter bag 1 inserted.

[0104] Here, the dual function of the locking element 4 on the device 20 is shown. It prevents possible damage to the vacuum cleaner 7 by ensuring both that only correct / suitable vacuum cleaner filter bags are used and that the vacuum cleaner 7 cannot be used without a vacuum cleaner filter bag inserted.

Claims

1. Vacuum cleaner filter bag (1) comprising a filter medium and a retaining plate (2) fixedly connected to the filter medium, which is designed for retention by a device for retaining a vacuum cleaner filter bag (1) in a vacuum cleaner (7), wherein the device (20) comprises a locking element (4) pivotable between an open position and a closed position, the locking element comprising a latching hook (12) and an engagement element (10), wherein the retaining plate (2) comprises: a latching hook bearing section (12a) formed in a first edge section (9a) of the retaining plate (2), and a first key section (8) formed in the first edge section (9a), wherein the latching hook bearing section (12a) is designed to interact with the latching hook (12) of the locking element, such that the locking element (4) latches with the latching hook bearing section (12a) in the closed position, and wherein the first key section (8) is designedto cooperate with the engagement element (10) so that the retaining plate (2) is held in the specified position when the closing element (10) is in the closed position.

2. Vacuum cleaner filter bag (1) according to claim 1, wherein the retaining plate comprises a second key section (8) formed in a second edge section (9b) of the retaining plate (2), wherein the first edge section (9a) is opposite the second edge section (9b), and wherein the second key section (8) is configured to cooperate with the engagement element (10) such that the retaining plate (2) is held in the predetermined position when the closing element (10) is in the closed position.

3. Vacuum cleaner filter bag (1) according to claim 1 or 2, wherein the retaining plate comprises a latch release section (13) adjacent to the latch bearing section (12a) and formed in the first edge section (9a) of the retaining plate (2), wherein the latch release section (13) is configured to release the latch (12) because no latching with the latch (12) takes place.

4. Vacuum cleaner filter bag (1) according to one of the preceding claims, wherein the first key section (8) and / or the second key section (8) comprise a plurality of projections (8a) and recesses (8b) arranged between two adjacent projections.

5. Vacuum cleaner filter bag (1) according to claim 4, wherein the projections have a substantially rectangular or trapezoidal shape.

6. Vacuum cleaner filter bag (1) according to claim 4 or 5, wherein the projections are of the same or different shape and / or size.

7. Vacuum cleaner filter bag (1) according to one of claims 4 to 6, wherein the projections are elastic.

8. Vacuum cleaner filter bag (1) according to one of claims 2 to 7, wherein the retaining plate (2) is mirror-symmetrical with respect to the first key section (8) and the second key section (8).

9. Vacuum cleaner filter bag (1) according to one of claims 2 to 8, wherein a further locking hook bearing section (12a) is formed in the second edge section (9b), wherein a further locking hook release section (13) adjacent to the further locking hook bearing section (12a) is arranged in the second edge section (9b), and wherein optionally the retaining plate (2) is mirror-symmetrical with respect to the first edge section (9a) and the second edge section (9b).

10. Vacuum cleaner filter bag (1) according to one of the preceding claims, wherein the retaining plate is symmetrical with respect to a plane that is parallel to a thickness direction of the retaining plate.

11. Vacuum cleaner filter bag (1) according to one of the preceding claims, wherein the retaining plate has a handle section in which the retaining plate has a local thickening.

12. Vacuum cleaner filter bag (1) according to one of the preceding claims, wherein the retaining plate comprises a material made from recycled materials and / or renewable raw materials.

13. Vacuum cleaner filter bag (1) according to one of the preceding claims, wherein the filter medium comprises a nonwoven fabric.

14. Vacuum cleaner filter bag (1) according to one of the preceding claims, wherein the connection between the retaining plate and the filter medium is airtight, in particular an adhesive connection, a clamping connection or a welded connection.

15. Vacuum cleaner filter bag according to one of the preceding claims, wherein the vacuum cleaner filter bag is a flat bag.

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