Hose coupling for a suction device, suction device, and method for connecting and detaching a suction hose
Patent Information
- Application Number
- EP2024711126
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-03-09
- Filing Date
- 2024-03-06
- Publication Date
- 2026-01-14
AI Technical Summary
Existing hose couplings for vacuum cleaners are difficult to connect and disconnect, often requiring two hands and complex maneuvers, leading to ergonomic issues and a risk of unintentional disconnection due to frictional forces.
A hose coupling design featuring a plug-in connection along a central axis with a movable actuating element that allows single-handed operation, incorporating a spring force to secure the connection and a latching device for form-fitting locking, enabling easy connection and disconnection without requiring coordination of forces in different directions.
The design facilitates easy and secure connection and disconnection of the suction hose with the vacuum cleaner, improving ergonomics and safety by allowing single-handed operation and preventing unintentional detachment, while maintaining a secure seal for efficient suction.
Smart Images
Figure EP2024055890_12092024_PF_FP_ABST
Abstract
Description
[0001] Hose coupling for a vacuum cleaner, vacuum cleaner and method for connecting and disconnecting a suction hose
[0002] The invention relates to a hose coupling for a vacuum cleaner, a vacuum cleaner, in particular a vacuum cleaner, a water vacuum cleaner or the like, and a method for connecting and disconnecting a suction hose, wherein the vacuum cleaner comprises a housing, a filter, a turbine and a suction hose, wherein a suction air duct is formed within the housing and connects a suction air inlet to a suction air outlet on the housing, wherein a suction air flow can be formed in the suction air duct and the suction hose by means of the turbine, wherein the hose coupling is designed for the detachable connection of the suction hose to the suction air inlet, wherein the hose coupling is designed with a hose connection on the suction hose and an intake nozzle on the suction air inlet.
[0003] Vacuum cleaners are well-known and are regularly used as mobile devices for cleaning surfaces, particularly floor coverings. A turbine for generating a suction airflow and a filter are usually arranged within the vacuum cleaner housing. A distinction is made between vacuum cleaners with filter bags, bagless vacuum cleaners, and vacuum cleaners with liquid or water filters. Such vacuum cleaners also have nozzles for cleaning floors, upholstered furniture, or the like. The nozzle can be formed or attached directly to the vacuum cleaner housing. In this case, the vacuum cleaner or its housing is always moved manually during a cleaning process using the nozzle. Such vacuum cleaners are generally referred to as handheld vacuum cleaners, canister vacuum cleaners, or stick vacuum cleaners.It is also known to connect such a nozzle to the vacuum cleaner housing via a suction hose, so that the nozzle can be manually moved independently of the housing during a cleaning process. The suction hose is then always flexible and easily bendable. The vacuum cleaner housing is usually mounted on rollers or wheels and can, if necessary, be easily pulled across a floor using the suction hose. Such vacuum cleaners are generally also referred to as canister vacuum cleaners. However, other types of vacuum cleaner can also have a suction hose, for example, as an accessory that can be exchanged for a rotating brush.
[0004] Such suction hoses are usually connected to the vacuum cleaner housing via a hose coupling, allowing the suction hose to be separated from the housing when necessary—for example, when a filter needs to be replaced or cleaned, or when the suction hose needs to be stored separately from the housing. A vacuum cleaner of this type is known, for example, from CN 202023321732 U. Here, a suction hose on the housing must first be removed before a housing cover can be opened and a filter removed.
[0005] Simple hose couplings are designed in such a way that a hose connection on the suction hose and an intake nozzle on the vacuum cleaner or its housing are each formed by a tube. The tubes can be inserted into one another and are slightly conical in shape so that they are fixed by friction. The disadvantage here is that, depending on the frictional connection, the suction hose or hose connection on the intake nozzle can come loose unintentionally or is difficult to separate. For this reason, it is also known to attach the hose connection to the intake nozzle by means of a thread or a bayonet lock. This is, however, comparatively cumbersome because it requires exact relative positioning of the intake nozzle and hose connection and may require several rotational movements in certain directions.At least with such a hose coupling, it's possible for a pulling force to act on the housing via the suction hose without the hose coupling being separated. This makes it possible to move the vacuum cleaner housing across a floor even by pulling on the suction hose.
[0006] Easier-to-use hose couplings can also be designed with an actuating element. For example, a finger-operated element can be provided on the vacuum cleaner housing or on the intake manifold or on the hose connection of the suction hose, which allows the hose connection and intake manifold to be locked and unlocked. At the very least, it is always necessary to hold the actuating element down with at least one finger when disconnecting the suction hose or hose connection from the intake manifold. To do this, one hand must grasp the hose connection, and the other hand must hold the vacuum cleaner housing so that the hose connection can be removed from the intake manifold.Two hands are always required, as the actuating element is always arranged in such a way that when the hose connection and intake manifold are separated along a plug-in axis, a force for unlocking must be exerted on the actuating element with at least one finger in a direction that does not correspond to the movement required to separate the hose connection and intake manifold. From an ergonomic point of view, the operation of such a hose coupling is therefore not optimal. It is therefore the object of the following invention to propose a hose coupling, a vacuum cleaner, and a method for connecting and disconnecting a suction hose to a vacuum cleaner, with which connection and disconnection are easier.
[0007] This object is achieved by a hose coupling having the features of claim 1, a suction device having the features of claim 1 and a method having the features of claim 17.
[0008] The hose coupling according to the invention for a vacuum cleaner, in particular a vacuum cleaner, water vacuum cleaner or the like, comprising a housing, a filter, a turbine and a suction hose, wherein a suction air duct is formed within the housing, which connects a suction air inlet to a suction air outlet on the housing, wherein a suction air flow can be formed in the suction air duct and the suction hose by means of the turbine, is designed for the detachable connection of the suction hose to the suction air inlet, wherein the hose coupling is formed with a hose connection on the suction hose and an intake nozzle on the suction air inlet, wherein a plug-in connection can be formed between the hose connection and the intake nozzle, wherein the hose connection and the intake nozzle can be brought into a connecting position by a relative movement along a plug-in axis of the plug-in connection, wherein the plug-in connection is designed such thatthat the plug connection is secured in the connection position against a tensile force acting on the plug connection along the plug-in axis via the suction hose, wherein the hose connection is designed with an actuating element movable along the plug-in axis, wherein the plug connection can be separated by exerting an actuating force on the actuating element along the plug-in axis.
[0009] The hose coupling or hose connection system according to the invention is accordingly designed such that the suction hose can be connected and disconnected from the housing of the vacuum cleaner as required. The intake nozzle is formed on the suction air inlet of the housing, wherein the intake nozzle can protrude from the housing or alternatively can be formed within the housing, i.e. can protrude into the housing. The hose connection is formed on one end of the suction hose. The suction hose itself is designed to be flexible and bendable, at least in sections. A plug-in connection can be formed between the hose connection and the intake nozzle, in that the hose connection is moved to the intake nozzle by relative movement along the plug-in axis.The plug-in axis essentially corresponds to a central axis of the hose connection and a central axis of the intake manifold, which are aligned with each other in the resulting connection position. The plug-in connection is designed so that a pulling force can be exerted on the intake manifold or the housing of the vacuum cleaner via the suction hose, allowing the housing to be manually pulled on the suction hose or moved across a floor without the hose connection being accidentally separated from the intake manifold.
[0010] A movable actuating element is also provided, which, when operated manually, enables the hose connection and intake manifold to be separated if desired. During separation, the hose connection is removed by exerting a pulling force on the hose coupling along the plug-in axis and the intake manifold. The actuating element, which allows separation in the first place, is subjected to the actuating force in such a way that the actuating force also acts along the plug-in axis. This means that the hose connection can be separated from the intake manifold with a single hand movement, since the pulling force required to separate it acts in the same direction as the actuating force used to actuate the actuating element. This means that it is no longer necessary to use two hands to separate the hose coupling, as the hose coupling can then be separated using just one hand.Furthermore, arm-hand-finger coordination is no longer required to disconnect the hose coupling, which requires applying forces in different directions. This makes the hose coupling significantly easier and safer to use, and therefore more ergonomic.
[0011] The actuating element can have at least one spring element, by means of which the actuating element can be subjected to a spring force in the direction of the intake manifold along the plug-in axis. The spring force can then act against the actuating force. This ensures that the actuating force and the tensile force must be applied in the same direction to disconnect the hose coupling. The spring element can be a simple coil spring, a leaf spring, or the like. Multiple spring elements can also be provided. If the spring element is a coil spring, this can also be arranged with its longitudinal axis pointing towards the intake manifold. The spring force can be dimensioned to be large enough to at least correspond to the tensile force required to disconnect the hose coupling. A movement to disconnect the hose coupling can then be carried out continuously without the need for increased manual force.
[0012] A locking device can be formed between the hose connection and the intake nozzle, which can positively secure the plug-in connection in the connected position against a tensile force exerted on the plug-in connection by the suction hose along the plug-in axis. A locking device is particularly easy to manufacture and enables the hose connection and intake nozzle to lock together when they are brought together in the connected position. The operator can then reliably detect when the connected position has been reached, for example by a sound from the locking device as it locks. The positive locking of the locking device also ensures that the hose connection does not accidentally become detached from the intake nozzle when a tensile force is applied. The locking device can be designed such that, in the connected position, the hose connection can be rotated relative to the intake nozzle, for example by 360°.
[0013] The locking device can be designed with at least one locking element and at least one stop that engages behind the locking element. The locking element can be formed on the hose connection and the stop on the intake port, or vice versa. The stop can simply be formed by a projection or a groove or the like.
[0014] The locking device can be designed with a plurality of locking elements that can be arranged equidistant from one another with respect to a diameter of the locking device. This makes it possible to create an even more secure connection between the hose connection and the intake manifold, since the hose connection and the intake manifold are then positively connected to one another at more than just one point on the hose coupling. Due to the equidistant arrangement of the locking elements with respect to the diameter of the locking device or the hose connection and the intake manifold, a tensile force can be evenly distributed across the locking elements. This also allows the locking elements to be made smaller, resulting in a more compact hose coupling overall.
[0015] The locking element can be a lever that can be pivoted transversely to the plug-in axis. A lug can be formed on the lever for engagement with the stop. Furthermore, a curve can be formed on the lever or a roller can be arranged, with which the lever can slide along the intake manifold or hose connection. This makes it much easier to bring the hose connection and intake manifold together. The lever can also be attached to the hose connection or intake manifold by means of an axis, so that the lever can be easily pivoted. Furthermore, the lever can also be formed on the hose connection or the intake manifold so that it can be flexibly moved. The locking device can have at least one spring element, by means of which the lever can be subjected to a spring force in a radial direction. The lever can then be subjected to the spring force towards or away from the plug-in axis, depending on the position of the stop.The spring element can be a coil spring, a leaf spring, a torsion spring, or the like. The lever itself can also form the spring element, which can then be molded onto the lever. The spring force acting on the lever allows it to slide over the stop when the hose connection and intake manifold are brought together, allowing the lever to be moved against the spring force. Once the lever has passed the stop, it can then lock into place using the spring force.
[0016] The actuating element can be formed with a radial recess, wherein the lever can engage in the radial recess in the connected position and rest against the stop. The radial recess can be formed on the stop, or the radial recess can form the stop. Furthermore, the radial recess can be formed entirely on the hose connection or the intake manifold, or only in sections on the hose connection or the intake manifold. If a spring element is provided to apply a spring force to the lever, the spring element can then move the lever into the radial recess and secure it there.
[0017] The actuating element can be designed with a radial projection, wherein the radial projection can be applied to the lever by means of a movement of the actuating element along the plug-in axis, the lever can be pivoted radially by means of the radial projection and the stop can be released such that the plug-in connection can be separated. The radial projection of the actuating element can be designed and arranged such that the movement of the actuating element along the plug-in axis causes a movement of the lever. For this purpose, the radial projection can, for example, slide along the lever and pivot the lever radially such that the lever, when it engages in, for example, a radial recess in the connected position, is moved out of this radial recess or away from the stop.The stop can then be released by the lever so that the pulling force acting along the plug-in axis makes it easy to separate the hose connection and the intake manifold.
[0018] The stop can be formed by a radial extension that overlaps the radial projection in the connected position. The radial extension can then be formed with a diameter that is larger than the diameter of the radial projection. The radial extension can then form, at least in sections, an annular groove within which the radial projection can rest. The movement of the lever by means of the radial projection during separation can then be dimensioned such that the lever is moved beyond the radial extension in a radial direction, so that the stop can be released.
[0019] The actuating element can be designed as a sleeve which coaxially surrounds a connecting pipe of the hose connection at least in section, preferably completely. The connecting pipe can be designed such that the connecting pipe can be inserted into the intake manifold. The sleeve can then be easily grasped with one hand, with pulling on the sleeve or exerting an actuating force on the sleeve along the plug-in axis causing the hose connection and intake manifold to be separated. It is then also completely irrelevant in which position the hose coupling is in relation to a user's hand, since the hose coupling or the sleeve radially surrounds the connecting pipe on one side. However, it is already sufficient if the sleeve coaxially surrounds the connecting pipe even only in section, since the sleeve can then easily be grasped with one hand so that the sleeve is between opposing fingers.
[0020] The hose connection can have a connecting piece which can be firmly connected to the suction hose, wherein the connecting piece can be mounted so as to be freely rotatable about the plug-in axis relative to a connecting pipe of the hose connection. The connecting piece can then be firmly connected to a flexible pipe of the suction hose such that the suction hose can then be freely rotated on the connecting pipe with the connecting piece. Furthermore, a seal can also be provided between the connecting piece and the connecting pipe in order to prevent leakage from impairing the suction effect. In a particularly simple embodiment, the connecting piece can be designed with a radial projection which engages in a radial groove on the connecting pipe or rests against it, or vice versa. The suction hose is considerably easier to handle thanks to its free rotation on the housing of the vacuum cleaner.
[0021] The locking element can be arranged on the hose connection and the stop can be formed on the intake nozzle or the locking element can be arranged on the intake nozzle and the stop can be formed on the hose connection.
[0022] The plug connection can be configured with at least one electrical connector. For example, an electric rotary brush or the like can be supplied with electrical power via the suction hose. The electrical connector can be configured as a plug-socket connection. The connector can be molded onto the hose connection or the intake port and have at least two electrical contacts or lines.
[0023] The hose connection and the intake manifold can be rotationally symmetrical, axially symmetrical, or asymmetrical relative to the plug-in axis. A rotationally symmetrical design particularly enables free rotation of the hose connection and intake manifold, as well as any desired connection position. With an axially symmetrical or asymmetrical design of the hose connection and intake manifold, a relative position of the hose connection and intake manifold in the connected position can be ensured, so that a plug-in connection can also be provided. The hose connection and the intake manifold can then also be geometrically designed in such a way that when the hose connection and intake manifold are brought together, the hose connection and the intake manifold are guided into the connected position, with the surfaces of the hose connection and the intake manifold then sliding against one another.
[0024] The vacuum cleaner according to the invention, in particular a vacuum cleaner, water vacuum cleaner, or the like, comprises a housing, a filter, a turbine, and a suction hose. Within the housing, a suction air duct is formed, which connects a suction air inlet to a suction air outlet on the housing. By means of the turbine, a suction air flow can be formed in the suction air duct and the suction hose. The vacuum cleaner has a hose coupling according to the invention for releasably connecting the suction hose to the suction air inlet. Further advantageous embodiments of the vacuum cleaner emerge from the feature descriptions of the subclaims referring back to claim 1.
[0025] In the method according to the invention for connecting and disconnecting a suction hose to a suction air inlet of a vacuum cleaner, in particular a vacuum cleaner, water vacuum cleaner or the like, by means of a hose coupling of the vacuum cleaner, wherein a suction air duct within a housing and a filter of the vacuum cleaner connects the suction air inlet to a suction air outlet on the housing, a suction air flow is formed in the suction air duct and the suction hose by means of a turbine of the vacuum cleaner, wherein the hose coupling is formed with a hose connection on the suction hose and an intake nozzle on the suction air inlet, wherein a plug-in connection is formed between the hose connection and the intake nozzle, wherein the hose connection and the intake nozzle are brought into a connecting position by a relative movement along a plug-in axis of the plug-in connection,The plug connection is secured in the connected position against a tensile force acting on the plug connection along the plug-in axis via the suction hose, and the plug connection is separated by exerting an actuating force along the plug-in axis on an actuating element of the hose connection. For the advantages of the method according to the invention, reference is made to the description of the advantages of the hose coupling according to the invention. Further advantageous embodiments of the method emerge from the feature descriptions of the subclaims referring back to claim 1.
[0026] Preferred embodiments of the invention are explained in more detail below with reference to the accompanying drawings.
[0027] They show:
[0028] Fig. 1 is a longitudinal sectional view of a hose coupling during joining or separating;
[0029] Fig. 2 is a longitudinal sectional view of the hose coupling of Fig. 1 in a connecting position;
[0030] Fig. 3 is a longitudinal sectional view of the hose coupling of Fig. 1 during actuation of an actuating element;
[0031] Fig. 4 is a longitudinal sectional view of the hose coupling of Fig. 1 during separation;
[0032] Fig. 5 is a longitudinal sectional view of another hose coupling during joining or separating.
[0033] Fig. 6 is a longitudinal sectional view of the hose coupling of Fig. 5 in a connecting position; Fig. 7 is a longitudinal sectional view of the hose coupling of Fig. 5 during actuation of an actuating element;
[0034] Fig. 8 is a longitudinal sectional view of the hose coupling of Fig. 5 during separation;
[0035] A summary of Figs. 1 to 4 shows a hose coupling 10 for a vacuum cleaner 11, shown here only in section, which has an intake nozzle 12 and a hose connection 13 as well as a suction hose 14. The hose coupling 10 is formed by the intake nozzle 12 and the hose connection 13. The intake nozzle 12 forms a suction air inlet 15, via which suction air can be sucked through the suction hose 14 and the vacuum cleaner 11 and passed through a filter (not shown here) and cleaned. The vacuum cleaner 11 is designed in particular for mobile handling by one person.
[0036] A plug-in connection 16 is formed between the intake manifold 12 and the hose connection 13, such that by moving the hose connection 13 along a plug-in axis 17 of the plug-in connection 16, the hose connection 13 can be brought into the connecting position 18 shown in Fig. 2. In particular, a locking device 19 with levers 20 and a stop 21 is formed. The levers 20 are pivotally mounted on an axis 22 and are subjected to a spring force in a radial direction by a spring 23. The stop 21 is formed with a radial extension 24, which pivots the levers 20 against the spring force when the hose connection 13 is inserted into the intake manifold 12. Upon reaching the connecting position 18, the levers 20 lock into a radial recess 25 on the hose connection 13.If the hose connection 13 is now subjected to a tensile force which acts in a direction away from the intake manifold 12, the lever 20 rests with a roller 26 located on the lever 20 on a web 27 of the stop 21 or the radial extension 24 in the axial direction, so that a positive connection between the intake manifold 12 and the hose connection 13 is produced, which connection cannot be released by a tensile force acting thereon.
[0037] Furthermore, an actuating element 28, which is designed as a sleeve 29, is provided on the hose connection 13. The sleeve 29 surrounds a connecting pipe 30 of the hose connection 13. The radial recess 25 is thus formed on the actuating element 28 or the sleeve 29. Furthermore, a radial projection 31 is formed on the sleeve 29, which is engaged over by the radial extension 24. The sleeve 29 is movably mounted by two springs 32 on a connecting pipe 33 of the hose connection 13 along the plug-in axis 17 such that a spring force in the direction of the intake nozzle 12 is caused by the springs 32. A connecting piece 34 is freely rotatably mounted on the connecting pipe 33 such that a flexible hose 35 of the suction hose 14, which is firmly connected to the connecting piece 34, can also be freely rotated.
[0038] As can be seen from Fig. 3, the application of an actuating force to the sleeve 29 or the pulling on the sleeve 29 along the plug-in axis 17 away from the intake manifold 12 causes the springs 32 to compress and the rollers 26 to slide along the radial projection 31 and thus a pivoting of the sleeve 29 in the radial direction against the spring force of the springs 23. The levers 20 with their rollers 26 then move above the radial extension 24 or over the stop 21, so that the connecting pipe 30 can already be pulled out of the intake manifold 12 a short way, as shown in Fig. 4. The rollers 26 or levers 20 then lie radially against the stop 21 or engage over it.The positive connection of the locking device 19 is thus no longer present, so that manual pulling on the sleeve 29 away from the intake manifold 12 can be converted into a separating movement of the intake manifold 12 and the hose connection 13 along the plug-in axis 17, which ultimately leads to a complete separation of the intake manifold 12 and the hose connection 13, as shown in Fig. 1. A combination of Figs. 5 to 8 shows a further embodiment of a hose coupling 36 with an intake manifold 37 and a hose connection 38. A locking device 39 is designed here with a function as already described with Figs. 1 to 4. In contrast to the hose coupling from Figs. 1 to 4, levers 18 are provided here, which are designed with a curve 41 for sliding along an actuating element 42 and for bearing against a stop 43.The levers 40 are mounted on a torsion bar 44, which forms a spring 45, and are pivotally mounted in a recess 46 of the intake manifold 37. Here, too, the actuating element 42 is designed as a sleeve 47. Manually pulling on the sleeve 47 in a direction away from the intake manifold 37 along a plug-in axis 48 causes, as shown in Fig. 7, a pivoting of the levers 40 beyond the stop 43, so that the hose connection 38 can be pulled out of the intake manifold 37, as shown in Fig. 8.
Claims
Patent claims 1. Hose coupling (10, 36) for a vacuum cleaner (11), in particular a vacuum cleaner, water vacuum cleaner or the like, comprising a housing, a filter, a turbine and a suction hose (14), wherein a suction air duct is formed within the housing, which connects a suction air inlet (15) to a suction air outlet on the housing, wherein a suction air flow can be formed in the suction air duct and the suction hose by means of the turbine, wherein the hose coupling is designed for the detachable connection of the suction hose to the suction air inlet, wherein the hose coupling is designed with a hose connection (13, 38) on the suction hose and an intake nozzle (12, 37) on the suction air inlet, characterized in that a plug-in connection (16) can be formed between the hose connection and the intake nozzle, wherein the hose connection and the intake nozzle can be connected by a relative movement along a plug-in axis (17,48) of the plug connection can be brought into a connection position (18), wherein the plug connection is designed such that the plug connection in the connection position counter to a force acting on the plug connection via the suction hose along the, Plug-in axis acting tensile force is secured, wherein the hose connection is formed with an actuating element (28, 42) movable along the plug-in axis, wherein the plug-in connection can be separated by exerting an actuating force on the actuating element along the plug-in axis.
2. Hose coupling according to claim 1, characterized in that the actuating element (28, 42) has at least one spring element (32) by means of which the actuating element can be subjected to a spring force in the direction of the intake nozzle (12, 37) along the plug-in axis (17, 48).
3. Hose coupling according to claim 1 or 2, characterized in that a locking device (19, 39) is formed between the hose connection (13, 38) and the suction nozzle (12, 37), which in the connecting position (18) positively secures the plug connection (16) against a tensile force that can be exerted on the plug connection by the suction hose (14) along the plug axis (17, 48).
4. Hose coupling according to claim 3, characterized in that the locking device (19, 39) is designed with at least one locking element and at least one stop (21, 43) which engages behind the locking element.
5. Hose coupling according to claim 4, characterized in that the locking device (19, 39) is formed with a plurality of locking elements which are arranged equidistant from one another relative to a diameter of the locking device.
6. Hose coupling according to claim 4 or 5, characterized in that the locking element is a lever (20, 40) which is pivotally mounted transversely to the plug-in axis (17, 48).
7. Hose coupling according to claim 6, characterized in that the locking device has at least one spring element (23, 45) by means of which the lever (20, 40) can be subjected to a spring force in a radial direction.
8. Hose coupling according to claim 6 or 7, characterized in that the actuating element (28, 42) is formed with a radial recess (25), wherein the lever (20, 40) engages in the radial recess in the connecting position (18) and bears against the stop (21, 43).
9. Hose coupling according to one of claims 6 to 8, characterized in that the actuating element (28, 42) is designed with a radial projection (31), wherein the radial projection can be applied to the lever (20, 40) by means of a movement of the actuating element along the plug-in axis (17, 48), the lever can be pivoted radially by means of the radial projection and the stop (21, 43) can be released in such a way that the plug-in connection (16) can be separated.
10. Hose coupling according to claim 9, characterized in that the stop (21, 43) is formed by a radial extension (24) which engages over the radial projection (31) in the connecting position (18).
11. Hose coupling according to one of the preceding claims, characterized in that the actuating element (28, 42) is designed as a sleeve (29, 47) which coaxially surrounds a connecting pipe (30) of the hose connection (13, 38) at least in sections.
12. Hose coupling according to one of the preceding claims, characterized in that the hose connection (13, 38) has a connecting piece (34) which is firmly connected to the suction hose (14), wherein the connecting piece is mounted so as to be freely rotatable about the plug-in axis relative to a connecting pipe (30) of the hose connection (17, 48).
13. Hose coupling according to one of the preceding claims, characterized in that the locking element is arranged on the hose connection and the stop is formed on the intake nozzle or that the locking element is arranged on the intake nozzle (12, 37) and the stop (21, 43) is formed on the hose connection (13, 38).
14. Hose coupling according to one of the preceding claims, characterized in that the plug connection (16) is formed with at least one electrical plug connector.
15. Hose coupling according to one of the preceding claims, characterized in that the hose connection (13, 38) and the intake nozzle (12, 37) are rotationally symmetrical, axially symmetrical or asymmetrical relative to the plug-in axis (17, 48).
16. Vacuum cleaner (11), in particular a vacuum cleaner, water vacuum cleaner or the like, comprising a housing, a filter, a turbine and a suction hose (14), wherein a suction air duct is formed within the housing, which connects a suction air inlet (15) to a suction air outlet on the housing, wherein a suction air flow can be formed in the suction air duct and the suction hose by means of the turbine, wherein the vacuum cleaner has a hose coupling (10, 36) according to one of the preceding claims for the detachable connection of the suction hose to the suction air inlet.
17. A method for connecting and disconnecting a suction hose (14) with a suction air inlet (15) of a vacuum cleaner (11), in particular a vacuum cleaner, water vacuum cleaner or the like, by means of a hose coupling (10) of the vacuum cleaner, wherein a suction air duct within a housing and a filter of the vacuum cleaner connects the suction air inlet with a suction air outlet on the housing, wherein a suction air flow is formed in the suction air duct and the suction hose by means of a turbine of the vacuum cleaner, wherein the hose coupling is formed with a hose connection (13, 38) on the suction hose and an intake nozzle (12, 37) on the suction air inlet, characterized in that a plug connection (16) is formed between the hose connection and the intake nozzle, wherein the hose connection and the intake nozzle are brought into a connection position (18) by a relative movement along a plug-in axis (17, 48) of the plug connection,wherein the plug connection is secured in the connection position against a tensile force acting on the plug connection along the plug-in axis via the suction hose, wherein the plug connection is separated by exerting an actuating force along the plug-in axis on an actuating element (28, 42) of the hose connection.