Device for receiving a suction hose and vacuum cleaner device comprising a receiving device

Abstract

The invention relates to a device for receiving a suction hose (2) which connects a nozzle of a vacuum cleaner device (4) to a central unit (3) of the vacuum cleaner device (4). The device comprises at least one holding device (5) which can be arranged on the central unit (3) of the vacuum cleaner device (4), wherein the suction hose (2) can be placed into the at least one holding device (5) such that the hose can be stowed in a secure and stable manner. This advantageously results in the user of the vacuum cleaner device (4) being able to adjust the length of the suction hose (2), as required, to the task to be currently carried out. In the process, the part of the suction hose (2) not in use is stored in a particularly secure and stable manner in the device or in cavities of the device which can be formed between the at least one holding device (5) and a rear part (9). In a second aspect, the invention relates to a vacuum cleaner device (4) comprising a central unit (3) which is connected to a nozzle by means of a suction hose (2).

Description

[0001] The present invention relates to a device for receiving a suction hose that connects a nozzle of a vacuum cleaner to a central unit of the vacuum cleaner. The device is characterized in that it has at least one holding device, which can be arranged on the central unit of the vacuum cleaner, wherein the suction hose can be inserted into the at least one holding device, so that the hose can be securely and stably stored. Advantageously, the invention enables a user of the vacuum cleaner to adjust the length of the suction hose as needed to the task at hand. The unused portion of the suction hose is stored particularly securely and stably in the device or in cavities of the device that can be formed between the at least one holding device and a rear section.In a second aspect, the invention relates to a vacuuming device with a receiving device. Background of the invention:

[0002] Dust generated on construction sites is often harmful to health and should not be inhaled. A distinction is usually made between primary and secondary dust. Primary dust is produced during various processes, such as drilling, chiseling, or grinding surfaces. This dust spreads through the air and can easily be inhaled by people nearby. The dust can also settle on the ground or other surfaces, becoming secondary dust. This secondary dust poses the risk of being resuspended during subsequent work processes and thus entering the respiratory tracts of workers or passersby.

[0003] To prevent the spread of primary dust, a dust collector is typically used. This device, equipped with suitable systems or attachments, is capable of collecting and / or extracting the dust directly at its source. This prevents the dust from entering the ambient air and being inhaled by workers or passersby. Secondary dust is usually extracted using a dust collector or vacuum cleaner to selectively vacuum and dispose of the dust from the floor.

[0004] Construction site conditions don't always allow for the use of a so-called "ground-based" vacuum cleaner. For example, many objects, building materials, or tools are lying around on the ground, which a vacuum cleaner equipped with wheels cannot overcome. Furthermore, stairs are often present, or work is carried out on scaffolding. For this reason, it is advantageous for both transport and use if the vacuum cleaner can be carried on the back. This allows for mobile operation and improves the vacuum cleaner's versatility. In a portable configuration, the vacuum cleaner according to the invention is referred to as a backpack vacuum cleaner, backpack vacuum, or backpack vacuuming device.

[0005] Modern vacuum cleaners can be used flexibly in various applications, for example, both as a portable backpack vacuum, carried on the user's back, and as a floor-mounted vacuum that can move across the floor using rollers or wheels. Especially when the vacuum is to be operated both from the floor and from the back, different optimal hose lengths are required depending on the application. For example, if the vacuum is to be operated from the floor, the optimal hose length for this application might be 3 meters or more, so that, for instance, dust can be extracted directly from holes near ceilings or in hard-to-reach places.However, if the vacuum cleaner is on the user's back, an optimal hose length of significantly less than 2 m can be advantageous, as otherwise the excess hose length will drag on the floor and / or pose a tripping hazard.

[0006] For example, DE 198 44 810 A1 discloses a suction line for a vacuum cleaning device, wherein the vacuum cleaning device is an upright floor vacuum cleaner with a rigid suction tube. US 5 331 714 A describes a similar vacuum cleaner.

[0007] US patent 2016 120 384 A1 discloses a hose support mechanism for a vacuum cleaner. German patent DE 203 18 350 U1 discloses a vacuum cleaner for cleaning purposes, wherein the top of the vacuum cleaner has provisions for holding a flexible suction hose.

[0008] US Patent 6,725,498 B2 discloses an arrangement for a recovery tank for a wet cleaning machine. US Patent 2,450,172 A describes an accessory holder for a cylindrical vacuum cleaner.

[0009] The object of the present invention is to provide a cost-effective, robust system for storing the suction hose, which allows the user to flexibly store the excess hose length. From the perspective of those in the know, it would be particularly desirable if the user could still vary the hose length even when the vacuum cleaner is already on the user's back.

[0010] To solve this problem, hoses capable of self-contained retraction are known in the prior art. However, these hoses are unsuitable for vacuum cleaners equipped with automatic filter cleaning. Devices for automatic filter cleaning often include a bypass valve. During filter cleaning, a pressure surge is typically generated, which, in conjunction with the bypass valve, could cause a suction hose, as described above, to contract and expand abruptly. This movement could potentially propagate to the vacuum cleaner's central unit, potentially transmitting the jerky motion to a user operating the vacuum cleaner. This can negatively impact the vacuum cleaner's usability, as it can cause sudden forces on the vacuum, potentially making it difficult for the user to control the vacuum cleaner precisely.Furthermore, the vacuum cleaner is often connected to a machine tool, such as a drill or a grinder. The hose collapsing can also impair the machine tool's usability.

[0011] A further objective underlying the present invention is therefore to provide a housing option for the suction hose of a vacuum cleaner that is particularly simple and cost-effective. Furthermore, the housing should be robust, especially against external influences such as moisture or dust, so that it can be used without problems even in dusty locations such as construction sites. In particular, the housing should be usable in conjunction with vacuum cleaners that can be used both as floor-standing and backpack vacuums, and the solution should be particularly suitable for use in conjunction with a filter cleaning system on the vacuum cleaner.

[0012] The problem is solved by the subject matter of the independent claims. Advantageous embodiments relating to the subject matter of the independent claims are found in the dependent claims. Description of the invention:

[0013] The problem is solved by a device according to claim 1, for receiving a suction hose that connects a nozzle of a vacuum cleaner to a central unit of the vacuum cleaner. The device is characterized in that it has at least one holding device that can be attached to the central unit of the vacuum cleaner, wherein the suction hose can be inserted into the at least one holding device so that the hose can be securely and stably accommodated. The at least one holding device has a corrugated profile, wherein the corrugated profile has depressions and protrusions, and the depressions of the corrugated profile form cavities with a rear part of the device for receiving the suction hose. The vacuum cleaner is designed as a backpack vacuum.It is preferred according to the invention that the suction hose is inserted into the at least one holding device in loops, so that the length of the suction hose can be determined by the number of loops. For example, a greater hose length is available for use with the vacuum cleaner when the hose is looped around the holding device with few loops, whereas a shorter hose length is available when the hose is looped around the holding device with many loops.

[0014] According to the invention, the vacuuming device comprises a central unit, preferably including a motor, a turbine, and a dust collection container. The turbine generates a vacuum, which draws dust into the interior of the vacuum. A dust collection container can be arranged inside the vacuum or within the central unit to collect the vacuumed dust. A dust bag can be inserted into the dust collection container and replaced when full. The turbine for generating the vacuum can be driven by a motor, preferably an electric motor. The central unit can also include a control device, operating elements, or communication means. The control device is preferably configured to control the vacuuming device.The controls can be used by a user to adjust settings on the vacuum cleaner, set the suction power, or turn the vacuum cleaner on or off. Any communication devices can be used to allow the vacuum cleaner to communicate with other devices, such as power tools, accessories, or other mobile devices like a smartphone. In particular, the central unit can be connected via a suction hose to a nozzle for vacuuming up dust. The nozzle is preferably a floor nozzle, which is particularly useful for vacuuming up dust lying on the floor. However, the nozzle can also be designed in any other conceivable way to collect dust. The central unit of the vacuum cleaner can also include a filter that protects the turbine from dirt and dust.The absorption of these contaminants can clog the filter, often resulting in the formation of a solid filter cake. A filter cleaning process, preferably mechanical, allows the filter to be cleaned so that it subsequently regains its full filtration capacity. Advantageously, the proposed invention allows the use of a commercially available suction hose that does not have any special features that would enable it to retract automatically. Such retractable hoses, as known from the prior art, are often incompatible with vacuum cleaners designed to perform automatic filter cleaning.Since a commercially available suction hose can be used in connection with the invention, the proposed receiving device can advantageously also be used in conjunction with a vacuum cleaner with filter cleaning.

[0015] It is particularly preferred in the context of the invention that the device comprises no moving parts. By avoiding moving parts, the device is particularly robust against external influences such as dust and / or moisture. In particular, a vacuuming device with a proposed receiving device has no gaps that could arise, for example, from the movement of components. Such gaps often serve as entry points for dust and / or moisture. Therefore, the proposed vacuuming device with the proposed receiving device, which preferably operates without moving parts, is particularly well protected against these external influences and is thus especially well suited for use in construction and particularly outdoors.The formulation that "the device does not include any moving parts" preferably means, within the meaning of the invention, that the device in particular does not include any movable, rotating or reversible components.

[0016] The wording does not preclude individual components of the device from being elastically designed. In particular, it is preferred within the scope of the present invention that the holding devices comprise at least partially elastic material, for example, by being designed as a clip. The suction hose can be inserted and / or clipped into such a clip, for example, so that it can be securely and stably fastened. This prevents, in particular, the hose from being freely movable and disturbing, hindering, or even endangering the user when using the vacuum cleaner. It is preferred within the scope of the invention, for example, that the at least one holding device comprises metal and / or plastic. For example, the holding devices can be made of bent sheet metal parts or plastic parts that possess optimal elasticity for use as an elastic holding device.In particular, the elasticity can be adjusted by selecting a suitable thickness and / or material for the sheet metal bending or plastic parts.

[0017] According to the invention, the at least one holding device has a corrugated profile. This is particularly advantageous to prevent the suction hose from being pinched. For the purposes of the invention, the term "corrugated profile" preferably means that the holding device can, for example, comprise an elastic piece of plastic or metal which has bumps and valleys or ridges and depressions (see, for example, [reference to relevant source]). Fig. 1The terms "recess" and "raised" are not unclear to a person skilled in the art because, in the context of the present invention, they are defined by their respective distances to a rear portion of the receiving device. A recess in the holding device or in the corrugated profile is, in the sense of the invention, characterized in particular by the fact that the recess has a greater distance to a rear portion of the support system than a raised portion of the holding device or the corrugated profile. This applies in particular to the lowest point of the recess and the highest point of the raised portion. The recesses can, for example, be designed to each receive a loop of the suction hose, with the distance between the recess of the holding device and a rear portion of the device corresponding to the diameter of the suction hose.In this context, the term "correspond" preferably means that the distance between the recess of the holding device and the rear part of the device can be adjusted to the suction hose used and its diameter. In particular, the distance can be selected so that the suction hose can be securely and stably held and easily clamped in the cavity formed between the recess of the holding device and the rear part of the device, preventing it from falling out of the cavity under normal vibrations and loads. On the other hand, the distance between the recess of the holding device and the rear part of the device is also not too small to avoid pinching the hose. It is preferred, within the scope of the invention, that a distance between a mound, i.e.,a raised section, the holding device and the back of the device is smaller than the diameter of the hose, in order to hold the hose in the cavity formed by the recess and back.

[0018] It is preferred according to the invention that a holding device has one to three recesses, each recess together with the rear part of the receiving device forming a cavity for receiving a loop of the suction hose. In a particularly preferred embodiment, the corrugated profile of the holding device has two recesses, so that the receiving device comprises two cavities for receiving two loops of the suction hose. A number of two cavities for receiving two loops has proven in practical tests to be a good compromise for the hose lengths typically used with construction site vacuums. According to the invention, the corrugated profile forms the front of the receiving device, while the rear part forms the back of the receiving device.However, it may also be preferred, in accordance with the invention, that the front face is formed by a profile or a planar device, such as a plate, which is not a corrugated profile. An embodiment of the invention, comprising a holding device wherein the holding device has a metal plate on its front face for clamping the suction hose, is described in [reference]. Fig. 3As illustrated. Preferably, the metal plate is designed, for example, with a sufficiently thin thickness, to possess elastic properties. This allows the plate to be pushed away from the rear of the mounting device to insert the suction hose into the cavity between the plate and the rear. By moving the plate back towards the rear, the suction hose is clamped into the cavity and can thus be fixed or attached to the vacuum cleaner within the mounting device. Preferably, the suction hose is only lightly clamped in the mounting device so that it can be moved laterally. This allows the hose to be moved within the mounting device by pushing and / or pulling movements, and its length, which is available to the user of the vacuum cleaner, to be adjusted.The plate that forms the front of the holding or receiving device can, for example, also comprise plastic or be designed as a plastic plate.

[0019] It is preferred, according to the invention, that the device can be integrated into a carrying system of the vacuum cleaner. The carrying system enables the vacuum cleaner to be used as a backpack vacuum and carried on the user's back. The carrying system can be designed similarly to the carrying system of a large travel backpack or a child carrier. The carrying system can include various straps, bands, and buckles that allow the central unit of the vacuum cleaner to be attached to the user. Preferably, the carrying system comprises a side facing the user's back and a side facing away from the user's back, on which the proposed device can be arranged. It is preferred, according to the invention, that the side of the carrying system facing away from the user's back forms the rear part of the device, which, together with the at least one retaining device, forms a cavity for receiving the suction hose.However, it may also be preferable, in accordance with the invention, for the device to be arranged at a different position on the vacuuming device. Preferably, the proposed vacuuming device can be used both as a backpack vacuum and as a floor-standing vacuum. In this respect, the vacuuming device preferably includes, in addition to the carrying system, means that enable the vacuum to move across a floor or surface.

[0020] In accordance with the invention, it is preferred that the device comprises one to five holding devices, preferably one to three holding devices, and most preferably two holding devices. A number of two holding devices, as for example in Fig. 1The device, as depicted, has proven to be particularly stable under vibration. The two preferred holding devices can be designed essentially symmetrically to each other and arranged side by side. In particular, the corrugated profile of the two preferred holding devices can be designed symmetrically to each other, so that depressions or protrusions are provided at the same height on each device. The depressions form cavities that are bounded by the rear part of the device. It is preferred, according to the invention, that the cavities are also arranged at the same height on the device, so that, if two holding devices are provided, the suction hose can, for example, be clamped in the two adjacent cavities of the device.By providing the preferably two retaining devices, the hose can be fixed at two contact points, thus ensuring optimal security not only against lateral slippage but also against vertical upward or downward movement. The terms "above" and "below" are not unclear to those skilled in the art in the context of the present invention, because they know that "below" or the spatial direction "downwards" refers to the side of the device or vacuum cleaner facing the ground. Conversely, the term "above" or the spatial direction "upwards" preferably refers to the side of the device or vacuum cleaner facing away from the ground or a surface.

[0021] In a second aspect, the invention relates to a vacuuming device with a central unit connected to a suction hose with a nozzle. The vacuuming device is characterized in that it has a proposed receiving device, i.e., that the receiving device has at least one holding device which can be arranged on the central unit of the vacuuming device, and the suction hose can be inserted into the at least one holding device. The at least one holding device has a corrugated profile, wherein the corrugated profile has recesses and protrusions, and the recesses of the corrugated profile form cavities with a rear part of the device for receiving the suction hose. The vacuuming device is designed as a backpack vacuum. It is particularly preferred in the context of the invention that the suction hose is pressure-resistant.This allows the hose to be inserted into or removed from the device by a pushing or pulling motion. This enables the hose to be stored away—advantageously, especially with just one hand—or its length to be extended as needed. This advantageously frees up the user's other hand for other tasks. The terms, definitions, and technical advantages introduced for the receiving device apply preferably analogously to the proposed vacuuming device.

[0022] According to one embodiment of the invention, the device is housed in a carrying system for a vacuum cleaner. The device serves in particular to hold and / or accommodate the suction hose, so that the proposed device can preferably be referred to as a receiving device within the meaning of the invention. In particular, the proposed receiving device can accommodate a variable length of suction hose. This is preferably achieved by allowing the suction hose to be wound into a different number of loops, which are then held by the receiving device. Depending on the number of hose loops held by the receiving device, the length of the hose with which the user of the vacuum cleaner can operate can be adjusted.

[0023] The receiving device has a corrugated profile to prevent the hose from being pinched despite the holder. One or more loops of the hose can be placed within this corrugated profile. Advantageously, the user can pull on the hose when the system is on their back. This allows a larger section of the hose to be released when a longer length is needed for use with the vacuum cleaner. It is particularly advantageous for the hose to be pressure-resistant, as required by the invention. This allows the user to push the hose back into the receiving device with a simple sliding motion.

[0024] The proposed solution is characterized by a particularly simple and robust design, as it includes no moving parts, which often tend to jam or wear out under construction site conditions and potentially dusty environments. In particular, the invention provides a cost-effective storage solution for excess hose material. Furthermore, the proposed invention increases workplace safety, as it effectively prevents users from tripping over hoses lying on the ground. At the same time, despite the stable storage and support of the hose, the length of the suction hose can be adjusted so that the same vacuum cleaner with the same hose is suitable for both floor and backpack applications. In other words, the proposed vacuuming device...Its central unit can be used both as a backpack vacuum and as a floor-standing vacuum. Additionally, the proposed storage device can also be used to essentially completely stow the hose for transport purposes.

[0025] The receiving device can optionally include one or more clips as holding devices, the holding devices allowing one or more loops of the suction hose to be accommodated, i.e., held. The number of loops that can be held by one holding device preferably depends on the number of cavities formed between the recesses of the corrugated profile of the holding device and the rear part of the receiving device. The clip devices can include both bent sheet metal parts and plastic parts for the holders. These can, in particular, form the preferably elastically designed corrugated profile of the at least one holding device.

[0026] Further advantages arise from the following character description.

[0027] In the figures, identical and similar components are numbered with the same reference symbols. They show: Fig. 1 View of a preferred embodiment of the receiving device. Fig. 2 Further view of a preferred embodiment of the receiving device with suction hose. Fig. 3 View of a preferred embodiment of the vacuuming device with receiving device. Character description:

[0028] Figure 1 Figure 1 shows a preferred embodiment of a proposed receiving device (1). In particular, Figure 2 shows Fig. 1 a receiving device (1) which is attached to a carrying system (11) of a vacuuming device (4, shown in which is designed, among other things, as a back vacuum cleaner) Fig. 3 ) is arranged. The vacuuming device (4) can have a suction hose (2, shown in the Fig. 2 and 3 ) and a nozzle (not shown), wherein the dust sucked in by the nozzle is conveyed through the suction hose (2) into a dust collection container within a central unit (3, shown in Fig. 3) of the suction device (4) can be transported. The receiving device (1) has at least one holding device (5), wherein the in Fig. 1 The illustrated receiving device (1) has, for example, two essentially symmetrical and parallel holding devices (5). The in Fig. 1 The illustrated holding devices (5) comprise a corrugated profile (6), which, for the purposes of the invention, is preferably also referred to as a wave profile (6). The holding device (5) or the corrugated profile (6) has recesses (7) and protrusions (8), each characterized by different distances to a rear part (9) of the support system (11) of the vacuum cleaner device (4).

[0029] Preferably, the carrying system (11) of the vacuum cleaner (4) has a back section (9) that also forms the back section (9) of the receiving device (1). Cavities (10) are formed between the back section (9) and the corrugated profile (6), which are particularly suitable for receiving the suction hose (2) of the vacuum cleaner (4). In particular, the cavities (10) are formed between the recesses (7) of the corrugated profile (6) or the holding device (5). It is preferred, according to the invention, that the recesses (7) have a greater distance from the back section (9) than the raised sections (8) of the corrugated profile (6) or the holding device (5). The distance between a recess (7) and the back section (9) is particularly large enough that the suction hose (2) can be inserted or clamped into a cavity (10) thus formed.It is preferred according to the invention that the suction hose can be moved horizontally to the right or left within the holding device(s) (5) of the receiving device (1). This allows the hose length available to the user of the vacuum cleaner (4) to be adjusted. In particular, the invention enables the hose length with which the user of the vacuum cleaner (4) can work to be adjusted by a pulling and / or pushing motion by the user.

[0030] Fig. 2 shows another view of a preferred embodiment of the receiving device (1). Fig. 2The suction hose (2) is shown in particular, which can connect the nozzle of a vacuum cleaner (4) to its central unit (3). The suction hose (2) can be wound around the receiving device (1) in one or more loops. The loops can be inserted into cavities (10) of the receiving device (1), the cavities (10) being formed between a rear part (9) of the receiving device (1) and a front part of the receiving device (1). According to the invention, the front part of the receiving device (1) is formed by a corrugated profile (6) that forms a retaining device (5) within the receiving device (1). However, the retaining device (5) can also be formed by, for example, a flat metal or plastic plate.Preferably, the holding device (5) is elastically designed so that it can be bent forwards or backwards to enlarge or reduce the cavity (10) for receiving the suction hose (2). Enlarging the cavity (10) makes it particularly easy to insert the suction hose (2) into the holding device (5) or the receiving device (1). Reducing the cavity (10) allows the suction hose (2) to be clamped within the holding device (5) or the receiving device (1) and thus fixed within the device (1 or 5).

[0031] If the holding device (5) is formed by or comprises a corrugated profile (6), it is preferred according to the invention that the corrugated profile (6) has recesses (7) and protrusions (8). It is particularly preferred according to the invention that the corrugated profile (6) has as many recesses (7) as there are loops of the suction hose (2) to be received. For example, if two loops of the suction hose (2) are to be received, it is preferred according to the invention that the corrugated profile (6) has two recesses (7) for receiving the suction hose (2). The recesses (7) are configured to form, together with the rear part (9) of the receiving device (1), cavities (10) for receiving the suction hose (2).

[0032] Fig. 3 Figure 4 shows a preferred embodiment of the vacuuming device (4) with receiving device (1). In particular, Figure 5 shows Fig. 3schematically, a central unit (3) of a vacuum cleaner (4), wherein a suction hose (2) is attached to the central unit (3). The in Fig. 3 The illustrated vacuuming device (4) can be worn on a user's back as a backpack vacuum or used as a floor-mounted vacuum (4). To be used as a backpack vacuum, the vacuuming device (4) has a carrying system (11) similar to that of a backpack or child carrier. The mounting device (1) can be attached to the carrying system (11). Fig. 3The illustrated embodiment of the receiving device (1) has a metal plate as a holding device (5). This metal plate (5) is essentially parallel to the rear part (9) of the receiving device (1), and the distance between the metal plate (5) and the rear part (9) can be increased or decreased by bending the preferably elastic metal plate (5) forwards or backwards. The suction hose (2) can be inserted into the resulting cavity (10). Fig. 3 In the illustrated embodiment of the invention, three loops of the suction hose (2) are inserted into the receiving device (1). In this state, the suction hose (2) lies essentially completely within the receiving device (1), and the vacuuming device (4) can be transported particularly easily as a whole, including the suction hose (2). Reference symbol list

[0033] 1. Mounting device 2. Suction hose 3. Central unit 4. Vacuuming device 5. Holding device 6. Corrugated profile 7. Recesses 8. Raised areas 9. Back section 10. Cavities 11. Carrying system

Claims

1. Device (1) for receiving a suction hose (2) that connects a nozzle of a vacuuming device to a central unit (3) of the vacuuming device (4), characterized in that the device (1) has at least one holding device (5), which is able to be fastened to the central unit (3) of the vacuuming device (4), wherein the suction hose (2) is able to be fitted in the at least one holding device (5), wherein the at least one holding device (5) has a wavy profile (6) and the wavy profile (6) has recesses (7) and elevations (8), wherein the recesses (7) of the wavy profile (6) form cavities (10) for receiving the suction hose (2) with a rear part (9) of the device (1), wherein the vacuuming device (4) is configured as a backpack cleaner.

2. Device (1) according to Claim 1, characterized in that the device (1) does not comprise any moving parts.

3. Device (1) according to Claim 1 or 2, characterized in that the device (1) is able to be integrated into a carrying system (11) of the vacuuming device (4).

4. Device (1) according to one of the preceding claims, characterized in that the device (1) comprises one to five holding devices (5), preferably one to three holding devices (5) and most preferably two holding devices (5).

5. Device (1) according to one of the preceding claims, characterized in that the at least one holding device (5) comprises metal and / or plastic.

6. Vacuuming device (4) having a central unit (3) that is connected to a suction hose (2) having a nozzle, characterized in that the vacuuming device (4) has a receiving device (1) according to one of Claims 1 to 5.

7. Vacuuming device (4) according to Claim 6, characterized in that the suction hose (2) is configured in a pressure-stable manner.

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