Floor nozzle for vacuum cleaner and vacuum cleaner

Abstract

The invention relates to a floor nozzle (1) for a vacuum cleaner (2) for cleaning and maintaining floor surfaces (100), with a housing (3) having an underside (4) facing the floor surface (100) in the processing position, on which an elongated suction nozzle (5) extending transversely to the processing direction (101) is arranged, wherein the suction nozzle (5) is bounded by at least one associated suction nozzle edge (6), wherein the suction nozzle edge (6) has a fastening part (7) and a pivot part (8), wherein the fastening part (8) is attached to the underside (4) and the pivot part (8) is movable relative to the fastening part (7), wherein the suction nozzle edge (6) has at least one flexible joint part (9) between the fastening part (7) and the pivot part (8), wherein the joint part (9) forms a pivot axis extending transversely to the processing direction (101) to allow a pivoting movement (102) of the pivot part (8) relative to the underside (4). make possible,wherein the pivoting part (8) has two sliding ramps (11, 12) converging at an angle to each other onto a lower sliding edge (10) extending transversely to the processing direction (101). The invention further relates to a vacuum cleaner (2) with such a floor nozzle (1).

Description

[0001] The invention relates to a floor nozzle for a vacuum cleaner for cleaning and maintaining floor surfaces, comprising a housing with an underside facing the floor surface in the operating position, on which an elongated suction nozzle extending transversely to the operating direction is arranged, wherein the suction nozzle is bounded by at least one associated suction nozzle edge, wherein the suction nozzle edge comprises a fastening element and a pivoting element, the fastening element being attached to the underside and the pivoting element being movable relative to the fastening element, wherein the suction nozzle edge has at least one flexible joint element between the fastening element and the pivoting element, the joint element forming a pivot axis extending transversely to the operating direction to enable a pivoting movement of the pivoting element relative to the underside. The invention further relates to a vacuum cleaner with such a floor nozzle.

[0002] Vacuum cleaners are used in both private households and commercial settings to clean surfaces such as textile floor coverings and hard floors. To pick up dust, a floor nozzle of the vacuum cleaner is continuously moved back and forth across the floor surface. The dust pickup efficiency of the vacuum cleaner depends heavily on the design of the floor nozzle.

[0003] From EP 3 298 944 B1, a floor nozzle for a floor cleaning device of the aforementioned type is known. This floor nozzle has excellent cleaning performance with fine dust on floor surfaces. However, its limited cleaning performance with coarse dirt on carpets is a disadvantage. Furthermore, the floor nozzle is not very durable and wears out quickly.

[0004] The invention therefore addresses the problem of providing an improved floor nozzle and an improved vacuum cleaner. In particular, it aims to provide a floor nozzle that offers improved removal of coarse dirt from carpets while ensuring a long service life.

[0005] According to the invention, this problem is solved by a floor nozzle having the features of claim 1 and a vacuum cleaner according to claim 11.

[0006] The swivel head features two angled, downward-facing sliding edges running perpendicular to the direction of travel, allowing for a floor nozzle that offers a long service life and improved removal of coarse dirt from carpets. The angled sliding edges on the movable swivel head ensure high dust pickup and efficient removal of coarse dirt particles, while the flexible joint allows the nozzle to adapt well to the floor covering. This flexible joint enables the nozzle to effectively adjust to the varying forces generated by pushing and pulling the floor nozzle in the direction of travel.By arranging a swiveling element on both sides of the nozzle's guide edge, the dust pickup efficiency of the floor nozzle – especially on carpets – can be significantly increased, allowing for good performance classes and dust pickup values ​​even at low suction power levels. The swiveling element of the nozzle's guide edge allows for better alignment of the guide edge, effectively lifting the carpet fibers. The movement of the swiveling element, facilitated by the joint, provides optimal adaptation to varying characteristics of the floor surface being cleaned and to the direction of movement of the floor nozzle.

[0007] The floor surface can be formed by a textile floor covering such as a carpet or carpeting, or by a hard floor such as wooden parquet, laminate or PVC flooring.

[0008] The vacuum cleaner may have a fan to create a vacuum, which draws dust and dirt from the floor surface via the floor nozzle, which is guided over the area to be cleaned. The user moves the floor nozzle back and forth in the direction of cleaning using push and pull motions. This allows the floor nozzle to glide over the floor surface. Especially with long-pile carpets, the underside of the floor nozzle glides over the surface, while on hard floors, the underside, possibly with the aid of spacer bristles, hovers over the surface. The user can, for example, use a handle connected to the suction tube to control the nozzle. To ensure the most effective cleaning and care of the floor covering, the suction nozzle is elongated and runs essentially perpendicular to the direction of cleaning.In this context, "elongated" means that the preferably essentially rectangular suction nozzle has a greater length transverse to the direction of travel than its width in the direction of travel. The floor nozzle can also be arranged on a self-propelled vacuum cleaner, particularly a robotic vacuum cleaner, so that the direction of travel of the floor nozzle corresponds to the direction of travel of the self-propelled vacuum cleaner. The vacuum cleaner housing can have a dust collection chamber in which the dust picked up via the floor nozzle can be collected, for example, in a dust bag.

[0009] Advantageous embodiments and further developments of the invention are set out in the following dependent claims.

[0010] According to an advantageous embodiment of the invention, the swiveling part has two legs in cross-section, transverse to the processing direction, which are connected to each other at the sliding edge and form the two sliding ramps. A sliding edge between the two sliding ramps can be easily formed via the legs of the swiveling part, which effectively bends the carpet fibers being swept over without requiring excessive force from the user when moving the floor nozzle.

[0011] According to an advantageous embodiment of the invention, the joint part of the suction nozzle edge is attached to the first leg of the pivoting part. By attaching the first leg to the underside, the sliding edge and the second leg can be pivoted relative to the underside of the first leg, thus enabling the suction nozzle edge to adapt to the floor surface and the direction of movement of the floor nozzle in the cleaning direction. The lifting of the carpet fibers by the suction nozzle edge and the subsequent suction of dirt and debris by the suction nozzle in the respective movement can ensure optimal cleaning of the floor surface without requiring significantly increased effort from the user, since the sliding edge, when following the suction nozzle in the respective movement, can simply glide lightly over the floor surface.Since the presented approach allows the suction nozzle edge to react flexibly to changing conditions of the floor covering and the direction of movement, the floor nozzle and in particular the sliding edge of the suction nozzle edge can be optimally positioned relative to the floor covering in order to achieve good dirt pickup values.

[0012] A preferred embodiment of the invention provides that the second leg of the swiveling part engages in a groove in the underside of the floor nozzle when the first sliding ramp of the first leg, in the direction of operation, glides across the floor surface ahead of the second sliding ramp of the second leg. By engaging the second leg in the groove, the resistance at the sliding edge is reduced as the floor nozzle moves across the floor surface. Thus, the suction nozzle edge, as it follows the suction nozzle in the respective movement, simply adapts to the direction of movement and prevents ineffective resistance during the movement of the floor nozzle.When the floor covering presses against the first sliding slope of the first leg, the swiveling part on the joint part pivots with the second leg into the groove on the underside of the floor nozzle and the resistance of the sliding edge during the movement of the floor nozzle is reduced when the suction mouth edge follows the suction mouth in the processing direction.

[0013] A particularly advantageous aspect of the invention is that the second leg is displaced from the groove in the underside when the second sliding ramp of the second leg glides across the floor surface in the direction of travel, ahead of the first sliding ramp of the first leg. Displacing the second leg from the groove provides an extended sliding ramp in front of the suction nozzle's sliding edge, which penetrates deeper into the floor covering. The resistance at the sliding edge is increased as the floor nozzle glides across the floor surface. Thus, as the suction nozzle follows the direction of movement, the suction nozzle's edge adapts to the direction of movement, ensuring effective dirt pickup.When the floor covering presses against the second sliding slope of the second leg, the swivel part on the joint part pivots with the second leg out of the groove on the underside of the floor nozzle and the resistance of the sliding edge during the movement of the floor nozzle is increased as the suction mouth follows the suction mouth edge in the processing direction, so that effective dust pickup is achieved by effectively bending up the carpet fibers.

[0014] A further advantage of the invention is that the suction nozzle edge has a first pivot limiting stop arranged in the machining direction between the swiveling part and the suction nozzle for limiting the pivoting motion of the swiveling part in a first pivoting direction, wherein the first pivot limiting stop limits the pivoting movement of the swiveling part such that the second sliding ramp assumes an angle of 13 to 17 degrees to the base surface. The arrangement of a first pivot limiting stop offers a simple way to limit the pivoting angle of the swiveling part about the pivot axis running transversely to the machining direction. The limitation by means of the pivot limiting stop enables the swiveling part to be supported when it comes to rest against the limit, thus preventing further pivoting.This support against the swivel limit stop ensures sufficiently strong cleaning, i.e., sweeping over, even harder carpets thanks to the sliding edge. The angle of the second sliding ramp to the floor surface, set at 13 to 17 degrees, allows screws, nuts, rice, lentils, and other coarse dirt to easily glide over and be effectively vacuumed up by the suction nozzle.

[0015] An advantageous embodiment of the invention provides that the suction nozzle edge has a second pivot limiting stop arranged opposite the first pivot limiting stop on the pivoting part in the machining direction. This second pivot limiting stop restricts the pivoting movement of the pivoting part in a second pivoting direction opposite to the first pivoting direction. The second pivot limiting stop limits the pivoting movement of the pivoting part such that the sliding edge is positioned at the entrance of the groove and the second leg of the pivoting part is at least partially arranged in the groove. The second pivot limiting stop prevents the second leg of the pivoting part from fully entering the groove. This ensures that the sliding edge and part of the second sliding chamfer remain in contact with the floor covering.If the direction of movement of the floor nozzle changes again in the cleaning direction, this contact of the swiveling part with the floor surface ensures that the swiveling part of the suction nozzle edge releases from the second swivel limit stop and pivots again until this pivoting movement is once more limited by the first swivel limit stop. This allows the suction nozzle edge to adapt particularly easily to the direction of movement of the floor nozzle and optimally position the sliding edge in relation to the suction nozzle. This is especially advantageous when the sliding edge of the suction nozzle edge is raised, which, through the forward or retraction movement of the floor nozzle in the cleaning direction, sweeps over and lifts the carpet fibers, which are then cleaned of dirt and debris by the subsequent suction nozzle.A significant reduction in the effort required to move the floor nozzle forward and backward can be achieved by pivoting the swiveling part of the nozzle's cutting edge, which, during the forward or backward movement, sweeps over the carpet fibers already cleaned by the nozzle, until it reaches the second swivel stop. The arms of the swiveling part thus easily create a gliding edge between the two sliding ramps, effectively lifting the carpet fibers without requiring excessive effort from the user during the forward movement. During the backward movement of the floor nozzle in the cleaning direction, the nozzle, following the cutting edge, can effectively pick up dirt and debris from the carpet fibers lifted by the cutting edge.On the other hand, the force required is reduced if the suction nozzle edge follows the suction nozzle in the processing direction on the floor surface.

[0016] According to an advantageous embodiment of the invention, the suction nozzle edge, together with the mounting part, the pivot part, and the joint part, is formed in one piece from a multi-component extrusion. The elongated suction nozzle edge, which extends parallel to the suction nozzle, can be manufactured very easily as a multi-component extrusion. The suction nozzle edge can be produced very simply by extruding the components together. The multi-component extrusion is durable, resistant to defects, and unaffected by dirt.

[0017] A preferred embodiment of the invention provides that the joint part of the multi-component extrusion component is softer than the fastening part and / or the pivot part of the suction nozzle edge. The softer joint part allows the pivot part to pivot easily relative to the fastening part. The stiffer fastening part can be securely attached to the underside of the floor nozzle, while the stiffer pivot part forms a more stable sliding edge that is particularly durable.

[0018] According to an advantageous embodiment of the invention, the joint part is elastically pre-tensioned when the swivel part is pivoted from a rest position. This pre-tensioning of the joint part automatically initiates the counter-movement to the pivoting of the swivel part, allowing the suction nozzle edge to easily adapt to changes in direction when the floor nozzle moves in the processing direction. The pivoting movement of the swivel part is automatically initiated when there is a change in direction, as soon as the previously active sliding ramp is no longer subjected to such a high load by contact with the floor covering that the pivot limit stop restricts the pivoting movement.

[0019] Furthermore, the invention relates to a vacuum cleaner for cleaning and maintaining floor surfaces, comprising a blower for generating a negative pressure for picking up dirt by means of an airflow and a separation system for cleaning the picked-up air from the dirt, wherein the vacuum cleaner already described in more detail above and below has a floor nozzle according to the previous and following description.

[0020] Further features, details, and advantages of the invention will become apparent from the following description and the drawings. Exemplary embodiments of the invention are shown purely schematically in the following drawings and are described in more detail below. Corresponding objects or elements are designated with the same reference numerals in all figures. It shows Figure 1: Vacuum cleaner according to the invention with floor nozzle; Figure 2: Floor nozzle according to the invention in side view; Figure 3: Sectional view through suction mouth; Figure 4: Detail view of suction mouth edge; Figure 5: Sectional view through suction mouth; Figure 6: Detail view of suction mouth edge; Figure 7: Close-up view of suction mouth edge; and Figure 8: Further close-up view of suction mouth edge.

[0021] In the figures designated by reference numeral 1, a floor nozzle according to the invention is shown in a purely schematic manner. The representation according to Figure 1Figure 1 shows a vacuum cleaner 2 according to the invention with a floor nozzle 1 connected to the vacuum cleaner 2. The vacuum cleaner 1 shown in the exemplary embodiment is a so-called canister vacuum cleaner. The floor nozzle 1 is connected here via its connection 19 to a suction tube 20, which is preferably telescopic. Furthermore, in this exemplary embodiment, the floor nozzle 1 has its own housing 3, independent of the vacuum cleaner housing 21, 21a. The telescopic suction tube 20 transitions into a handle 22, to which a suction hose 23 is connected, which is connected to the vacuum cleaner housing 21, 21a. An electrical connection cable 24 powers a blower (not shown) of the vacuum cleaner 2, which is integrated into the vacuum cleaner housing 21, 21a, in order to generate a vacuum. By means of this vacuum, dirt and debris are lifted from the floor surface to be cleaned by an airflow through the suction nozzle 5 ( Fig. 3The dust is collected by the floor nozzle 1 (see section 5) and transported via the suction tube 20 and the suction hose 23 into the housing 21, 21a of the vacuum cleaner 2. A separation system 18, designed as a dust bag in this embodiment, is provided in this housing 21, 21a. This separation system 18 is located in a dust chamber 25 formed by the housing parts 21 and 21a of the vacuum cleaner 2. This dust chamber 25 is accessible and shown open via a hinged mechanism between the vacuum cleaner housing parts 21 and 21a, so that the separation system 18 is visible and removable. To operate the vacuum cleaner 2, the dust chamber 25 is closed and a vacuum is created. The airflow generated by the vacuum is freed from dirt and debris in the separation system 18 and discharged from the vacuum cleaner 2 via an exhaust grille 26. The vacuum cleaner 2 has a foot switch 27 for turning it on and off.This foot control 27 includes switches that are sufficiently large for a user to operate with their foot. The foot control 27 also typically has a switch for operating the (not shown) automatic winding mechanism for the power cord 24, which is integrated into the vacuum cleaner housing 21, 21a. A hand control 28 is also located on the handle 22, which can be used to activate the functions of the vacuum cleaner 2 and, if applicable, the floor nozzle 1. The vacuum cleaner 2 can also be switched on and off via the hand control 28, and power levels of the (not shown) blower can be selected. A user of the vacuum cleaner 1 can grasp it by the handle 22 and thus move the floor nozzle 1 back and forth in the direction 101 indicated by the double arrow using a push-and-pull motion to clean the floor area 100. In doing so, the floor nozzle 1 glides over the floor area 100 to be cleaned.Especially with long-pile carpets, the underside 4 glides (. Fig. 3 u. 5) of the floor nozzle 1 over the floor area 100, while the underside 4 ( Fig. 3 u. 5) is objected to on hard floors, possibly by means of spacer bristles, hovers over these floor surfaces. In the illustrated embodiment, the floor nozzle 1 also has support elements 29 in the form of wheels, which maintain a defined distance from the underside 4 ( Fig. 3 u. 5) to the floor surfaces to be cleaned and ensure easy handling when pushing the floor nozzle 1 back and forth.

[0022] The Figure 2 Figure 1 schematically shows the floor nozzle 1 according to the invention in a sectional view that passes through part of the housing 3. The housing 3 has a floor surface 100 in the machining position shown ( Fig. 3The bottom surface 4 faces the surface. On this bottom surface 4, an elongated suction opening 5, extending transversely to the processing direction 101, is arranged, which is shown here in cross-section. The suction opening 5 is bounded by an associated suction opening edge 6. However, several corresponding suction opening edges 6 can also be provided on the bottom nozzle 1. In particular, a corresponding suction opening edge 6 can also be provided on the side of the suction opening 5 opposite the suction opening edge 6 on the bottom surface 4 to limit the suction opening 5. In the illustrated embodiment, only the left or rear edge of the suction opening 5 is provided with a special suction opening edge 6, which is described in more detail below. The front or right edge of the suction opening 5 can also be bounded accordingly.

[0023] In Figure 3 The cut through floor nozzle 1 according to Figure 2The image is shown enlarged in detail. The floor nozzle 1 is guided from left to right across the carpeted floor area 100 in the direction of cleaning, so that the carpet fibers are bent accordingly by the underside 4 of the floor nozzle 1. In this forward movement of the floor nozzle 1, the suction nozzle edge 6 follows the suction nozzle 5 across the floor area 100 and serves only a limited purpose in picking up dust through the floor nozzle 1. In the movement shown here, the front edge of the suction nozzle 5 serves to pick up dust, as it glides across the carpet in front of the suction nozzle 5 and combs the carpet fibers to loosen the dust for extraction.

[0024] The Figure 4 shows a detailed view of the suction mouth edge 6 according to Figure 3. Here it is easier to see that the suction nozzle edge 6 has a mounting part 7 and a pivoting part 8. The mounting part 8 of the suction nozzle edge 6 is attached to the underside 4 of the floor nozzle 1. The pivoting part 8 is designed to be movable relative to the mounting part 7. A flexible joint part 9 of the suction nozzle edge 6 is provided between the mounting part 7 and the pivoting part 8. The joint part 9 forms a pivot axis that runs transversely to the processing direction 101, along the suction nozzle 5. The pivot axis enables a pivoting movement 102 ( Fig. 2) of the pivoting part 8 relative to the underside 4 of the floor nozzle 1. According to the invention, the pivoting part 8 has two sliding ramps 11, 12 converging at an angle to each other on a lower sliding edge 10 extending transversely to the processing direction 101. This allows for improved removal of coarse dirt from carpets, as will be explained in more detail below. In the cross-section shown, the pivoting part 8, transverse to the processing direction 101, is formed from two legs 13, 14 connected to each other at the sliding edge 10, forming the two sliding ramps 11, 12. The joint part 9 of the suction nozzle edge 6 is attached to the first leg 13 of the pivoting part 8. The attachment of the first leg 13 to the underside 4 ensures that the sliding edge 10 and the second leg 14 can be pivoted relative to the underside 4 on the first leg 13.This allows for easy adjustment of the suction nozzle edge 6 to the surface and to the direction of movement of the floor nozzle 1 in the processing direction 101. In the . Figures 2 to 4 During the forward movement of the floor nozzle 1 shown, the second leg 14 of the swiveling part 8 dips into a groove 15 in the underside 4 of the floor nozzle 1. This occurs when the first sliding ramp 11 of the first leg 13 slides across the floor surface 100 in the machining direction 101 in front of the second sliding ramp 12 of the second leg 14, as shown in Figure 3The second leg 14 being inserted into the groove 15 reduces resistance at the sliding edge 10 when the floor nozzle 1 slides over the floor covering of the floor surface 100. This is particularly advantageous when the floor nozzle 1 is moving forward, as the pressure forces required by the user to guide the floor nozzle 1 are usually more strenuous than a backward movement of the floor nozzle 1 towards the body.

[0025] The Figure 5 shows a cross-section through floor nozzle 1 according to Figure 2In an enlarged view, the floor nozzle 1 is moved backwards in the direction of processing 101. The second leg 14 is displaced from the groove 15 in the underside 4. The gliding edge 10 penetrates deeper into the carpet fibers of the floor surface 100. This causes the carpet fibers to be more thoroughly combed by the gliding edge 10, loosening the dust in the spaces between them before it is sucked up by the suction nozzle 5, which follows the suction nozzle edge 6 in its movement across the floor surface 100 in the direction of processing 101.

[0026] In Figure 6 is a detailed view of the suction mouth edge 6 according to Figure 5 to see. Here it is easier to see how the second sliding chamfer 12 of the second leg 14 is in the machining direction 101 ( Fig. 5 ) before the first sliding slope 11 of the first leg 13 over the floor surface 101 ( Fig. 5) can slide. The shown displacement of the second leg 14 from the groove 15 provides an extended sliding ramp 12 in front of the sliding edge 10 of the suction nozzle edge 6, which penetrates deeper into the floor covering, in front of the suction nozzle 5. This reduces the resistance at the sliding edge 10 when the floor nozzle 1 slides over the floor covering of the floor surface 101 ( Fig. 5 ) situationally increased, but the suction nozzle edge 6, adapted in this way, ensures effective dirt pickup during the backward movement of the floor nozzle 1. Since the suction nozzle 5 follows the suction nozzle edge 6 during the backward movement, the dirt loosened at the sliding edge 10 can be easily picked up by the suction nozzle 5 during the movement of the floor nozzle 1.

[0027] The suction nozzle edge 6 has a first swivel limit stop 16 arranged in the processing direction 101 between the swivel part 8 and the suction nozzle 5 for limiting a swivel deflection of the swivel part 8 in a first swivel direction 103. When the floor nozzle 1 moves backward, the swivel part 8 automatically strikes this swivel limit stop 16. The first swivel limit stop 16 then limits the swivel movement 102 of the swivel part 8 such that the second sliding ramp 12 forms an angle α of 13 to 17 degrees with the floor surface 100 ( Fig. 5 ) occupies. The arrangement of the first swivel limit stop 16 offers a simple way to adjust the swivel angle of the swivel part 8 about the swivel axis transverse to the machining direction 101 ( Fig. 5) to limit. This limiter supports the swiveling part 8 in such a way that further swiveling is prevented. The angle α of the second sliding ramp 12 to the base surface 100, set here at 13 to 17 degrees, allows screws, nuts, rice, lentils, and other coarse debris to easily slide over and be effectively picked up by the suction nozzle 5. The stop of the swiveling part 8 against the first swivel limiter 16 also creates a smooth transition between the sliding edge 20 and the suction nozzle 5 via the first sliding ramp 11, so that the loosened dirt can be effectively vacuumed up. In addition to the first swivel limiter 16, a second swivel limiter 17 is also provided, the function of which is described in Figure 4better to see. In the machining direction 101, opposite the first swivel limit stop 16 on the swivel part 8, a second swivel limit stop 17 is arranged. It serves to limit a swivel deflection of the swivel part 8 in a second swivel direction 104 opposite to the first swivel direction 103 ( Fig. 4 ). The second swivel limit stop 17 limits the swivel movement 102 ( Fig. 2 ) of the pivoting part 8 such that the sliding edge 10 is positioned at the entrance of the groove 15, as shown in Figure 4 The second leg 14 of the swivel part 8 is at least partially arranged in the groove 15.

[0028] The second swivel limit stop 17 ensures that the second leg 14 of the swivel part 8 does not fully engage in the groove 15. This keeps the sliding edge 10 and part of the second sliding chamfer 12 in contact with the base surface 100 ( Fig. 3). If the direction of movement of the floor nozzle 1 changes back to processing direction 101 ( Fig. 5 ), this contact of the swiveling part 8 with the floor surface 100 ( Fig. 3 ) so that the pivoting part 8 of the suction nozzle edge 6 releases itself again from the second pivot limit stop 17 and pivots until this pivoting movement is again limited by the first pivot limit stop 16. In this way, the suction nozzle edge 6 can adapt particularly easily to the directions of movement of the floor nozzle 1 and optimally position the sliding edge 10 relative to the suction nozzle 5. The positioning of the sliding edge 10 of the suction nozzle edge 6 is particularly advantageous, as it is determined by the forward or retraction movement of the floor nozzle 1 in the processing direction 101 ( Fig. 1) the carpet fibers are brushed over and bent upwards, which are then freed from dirt and impurities by the subsequent suction nozzle 5. A significant reduction in the force required for pushing and retracting the floor nozzle can be achieved by pivoting the swiveling part of the suction nozzle edge 6 up to the second swivel limit stop 17 when the suction nozzle edge 8 is in the processing direction 101 ( Fig. 2 ) the carpet fibers that have already been cleaned by the suction nozzle 5.

[0029] The Figures 7 and 8 Show individual views of sucking mouth edges 6. While in Figure 8 If a sucking mouth edge 6 is represented as being made of a material, the sucking mouth edge 6 is in Figure 7 Made from various materials. The suction mouth edge 6 in Figure 7The mounting part 7, the pivot part 8, and the joint part 9 are formed in one piece from a multi-component extrusion. The joint part 9 of the multi-component extrusion is softer than the mounting part 7 and / or the pivot part 8 of the suction mouth edge 6. The softer joint part 9 allows the pivot part 8 to pivot easily relative to the mounting part 7. The stiffer mounting part 7 can be securely attached to the underside 4 ( Fig. 2 ) the floor nozzle 1 ( Fig. 2 ) are attached, while the more rigid swivel part 8 forms a more stable sliding edge 10, which is particularly durable. The joint part 9 is elastically pre-tensioned when the swivel part 8 is pivoted from the rest position 105 shown. The pre-tension of the joint part 9 automatically initiates the counter-movement to the pivoting of the swivel part 8, so that the suction nozzle edge 6 itself easily adapts to changes in direction when the floor nozzle 1 moves ( Fig. 2) in processing direction 101 ( Fig. 2 ). The pivoting movement of the pivoting part 8 is initiated automatically when the direction changes, as soon as the previously active sliding ramp 11, 12 is no longer subjected to such a strong load by contact with the floor covering that the pivot limiting stop 16, 17 ( Fig. 6 ) limits the swiveling movement.

[0030] Advantageously, the length of the second sliding chamfer 12 does not exceed 5 mm. This prevents a stronger contact force from the coarse dirt causing the second leg 14 to be pushed away and thus preventing particles from penetrating the groove 15 ( Fig. 3 ) of the underside 4 ( Fig. 2 ) and thereby leads to a tilting of the swivel part 8.

[0031] Of course, the invention is not limited to the illustrated embodiments. Further embodiments are possible without departing from the basic concept. For example, the floor nozzle 1 can also be designed as part of a self-propelled vacuum cleaner. Reference symbol list:

[0032] 1 Floor nozzle 2 Vacuum cleaner 3 Housing 4 Underside 5 Suction nozzle 6 Suction nozzle edge 7 Mounting part 8 Swivel part 9 Joint part 10 Sliding edge 11 First sliding ramp 12 Second sliding ramp 13 First leg 14 Second leg 15 Groove 16 First swivel limit stop 17 Second swivel limit stop 18 Separation system 19 Connection nozzle 20 Suction tube 21 Vacuum cleaner housing 22 Handle 23 Suction hose 24 Connection cable 25 Dust compartment 26 Exhaust grille 27 Foot switch 28 Hand switch 29 Support elements 100 Floor surface 101 Processing direction 102 Swivel movement 103 First swivel direction 104 Second swivel direction 105 Rest position α Angle to floor surface

Claims

1. Floor nozzle (1) for a vacuum cleaner (2) for cleaning and maintaining floor surfaces (100), comprising a housing (3) having a bottom surface (4) facing the floor surface (100) in the processing position, on which an elongated suction nozzle (5) extending transversely to the processing direction (101) is arranged, wherein the suction nozzle (5) is bounded by at least one associated suction nozzle edge (6), wherein the suction nozzle edge (6) has a fastening part (7) and a pivot part (8), wherein the fastening part (8) is attached to the bottom surface (4) and the pivot part (8) is movable relative to the fastening part (7), wherein the suction nozzle edge (6) has at least one flexible joint part (9) between the fastening part (7) and the pivot part (8), wherein the joint part (9) forms a pivot axis extending transversely to the processing direction (101) to enable a pivoting movement (102) of the pivot part (8) relative to the bottom surface (4), characterized by thatthe swiveling part (8) has two sliding ramps (11, 12) that converge at an angle to each other on a lower sliding edge (10) running transversely to the machining direction (101).

2. Floor nozzle (1) according to claim 1, characterized by the fact that the swiveling part (8) has in cross-section, transverse to the machining direction (101), two legs (13, 14) connected to each other at the sliding edge (10), forming the two sliding ramps (11, 12).

3. Floor nozzle (1) according to claim 2, characterized by the fact that The joint part (9) of the suction mouth edge (6) is attached to the first leg (13) of the swivel part (11).

4. Floor nozzle (1) according to claim 3, characterized by the fact that the second leg (14) of the swivel part (8) enters a groove (15) in the underside (4) of the floor nozzle (1) when the first sliding ramp (11) of the first leg (13) slides in the machining direction (101) in front of the second sliding ramp (12) of the second leg (14) over the floor surface (100).

5. Floor nozzle (1) according to claim 4, characterized by the fact that the second leg (14) is displaced from the groove (15) in the underside (4) when the second sliding ramp (12) of the second leg (14) slides in the machining direction (101) in front of the first sliding ramp (11) of the first leg (13) over the bottom surface (101).

6. Floor nozzle (1) according to claim 5, characterized by the fact that The suction mouth edge (6) has a first swivel limiting stop (16) arranged in the machining direction (101) between the swivel part (8) and the suction mouth (5) for limiting a swivel deflection of the swivel part (8) in a first swivel direction (103), wherein the first swivel limiting stop (16) limits the swivel movement (102) of the swivel part (8) such that the second sliding ramp (12) assumes an angle (α) of 13 to 17 degrees to the base surface (100).

7. Floor nozzle (1) according to claim 6, characterized by the fact thatThe suction mouth edge (6) has a second swivel limit stop (17) arranged opposite the first swivel limit stop (16) on the swivel part (8) in the machining direction (101) for limiting a swivel deflection of the swivel part (8) in a second swivel direction (104) opposite to the first swivel direction (103), wherein the second swivel limit stop (17) limits the swivel movement (102) of the swivel part (8) such that the sliding edge (10) is positioned at the entrance of the groove (15) and the second leg (14) of the swivel part (8) is at least partially arranged in the groove (15).

8. Floor nozzle (1) according to one of the preceding claims, characterized by the fact that The suction mouth edge (6) is formed in one piece from a multi-component extrusion component together with the fastening part (7), the swivel part (8) and the joint part (9).

9. Floor nozzle (1) according to claim 8, characterized by the fact thatthe joint part (9) of the multi-component extrusion component is designed to be softer than the fastening part (7) and / or the pivot part (8) of the suction mouth edge (6).

10. Floor nozzle (1) according to one of the preceding claims, characterized by the fact that the joint part (9) is elastically prestressed when the pivot part (8) is pivoted from a rest position (105).

11. Vacuum cleaner (2) for cleaning and maintaining floor surfaces (100) with a blower for generating a negative pressure for picking up dirt by means of an airflow and a separation system (18) for cleaning the picked-up air from dirt, characterized by a floor nozzle (1) according to one of the preceding claims.

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