Vacuum cleaner nozzle and vacuum cleaner

Abstract

A vacuum cleaner nozzle (1) configured to move on a floor surface (30) is disclosed. The suction nozzle (1) comprises a suction nozzle base (3) configured to face a floor surface (30) during operation of the suction nozzle (1). The nozzle base (3) comprises a suction port (5) and a plurality of flow directing elements (7) arranged adjacent to the suction port (5). Each flow-guiding element (7) of the plurality of flow-guiding elements (7) has a cross-section tapering away from the suction port (5) as seen in a direction (d1, d2) from the suction port (5) towards the flow-guiding element (7). Furthermore, each flow guiding element (7) is movably arranged between a retracted position and a withdrawn position in a direction (d3, d4) into and out of the nozzle base (3). The disclosure further relates to a vacuum cleaner (20) comprising a vacuum cleaner nozzle (1).

Description

Technical Field

[0001] The present disclosure relates to a vacuum cleaner nozzle. The present disclosure further relates to a vacuum cleaner comprising the vacuum cleaner nozzle. Background Art

[0002] A vacuum cleaner (also called a sweeper or vacuum cleaner) is a device that uses an air pump (most commonly a centrifugal fan) to create a partial vacuum at the vacuum cleaner nozzle of the vacuum cleaner to suck up dust and dirt from surfaces such as floors, carpets, beds, etc. The dust and dirt is collected by a separator unit of the vacuum cleaner (such as a dust bag or a cyclone arrangement) for later disposal. There are many types of vacuum cleaners, such as canister vacuum cleaners, drum vacuum cleaners, handheld vacuum cleaners, stick vacuum cleaners, robotic vacuum cleaners, central vacuum cleaners, etc.

[0003] Most vacuum cleaner nozzles include an arrangement at the nozzle base of the nozzle, the arrangement comprising: a first section, which is arranged in front of the suction port (seen relative to the forward movement direction of the nozzle); and a second section, which is arranged in front of the suction port (seen relative to the reverse movement direction of the nozzle). This arrangement typically includes a first section in the form of a first elongated brush assembly and a second section in the form of a second elongated brush assembly, wherein each elongated brush assembly typically includes a plurality of brush pockets constituting an open section of the elongated brush assembly. In addition, this type of arrangement can increase the suction by restricting the flow towards the suction port, i.e., a partial vacuum between the arrangement and the suction port can be increased, especially when cleaning harder types of surfaces such as floor surfaces.

[0004] However, when cleaning softer types of surfaces such as carpets, these types of arrangements can significantly increase the friction between the nozzle and the surface being cleaned, which is usually troublesome for the user. In addition, this operation may damage softer types of surfaces such as delicate carpets, furniture, etc.

[0005] Therefore, many vacuum cleaner nozzles include a mechanism for moving the segments of the above-mentioned arrangement between an extracted position, in which the segments (such as the first elongated brush assembly and the second elongated brush assembly) protrude from the nozzle base, and a retracted position, in which the segments are moved into the nozzle base of the nozzle into respective retracted positions.

[0006] Such vacuum cleaner nozzles require the user to manually change the setting of the mechanism when moving from a harder type of surface to a softer type of surface (or vice versa). A typical home includes several harder type of surfaces and softer type of surfaces, which requires the user to frequently perform manual changes of the mechanism setting during the cleaning process, which is cumbersome for the user.

[0007] Furthermore, when the segments of the above mentioned arrangement are in the respective extraction position, these segments may prevent objects and particles from reaching the suction port.

[0008] Furthermore, generally, in today's consumer market, it is advantageous if products such as vacuum cleaners and their associated components have conditions and / or characteristics that are suitable for manufacturing and assembling in a cost-effective manner. Additionally, generally, in today's consumer market, it is advantageous if products such as vacuum cleaners and their associated components are simple and intuitive to use. Summary of the invention

[0009] It is an object of the present invention to overcome or at least alleviate at least some of the above mentioned problems and disadvantages.

[0010] According to a first aspect of the present invention, the purpose is achieved by a vacuum cleaner nozzle, which is configured to move on a floor surface. The nozzle includes a nozzle base, which is configured to face the floor surface during operation of the nozzle. The nozzle base includes a suction port and a plurality of flow guiding elements arranged adjacent to the suction port. Each of the plurality of flow guiding elements has a cross section that is tapered away from the suction port as seen from the suction port toward the flow guiding element, and wherein each flow guiding element is movably arranged between a retracted position and an extracted position in the direction of entering and exiting the nozzle base.

[0011] Since the nozzle base of the nozzle comprises a plurality of flow guiding elements, each flow guiding element having a cross section tapered away from the suction port as seen in a direction from the suction port towards the flow guiding element, a vacuum cleaner nozzle is provided which creates conditions for favorable flow characteristics towards the suction port for guiding particles and objects towards the suction port in an effective manner. This is because the tapered cross section of the flow guiding element forms a funnel-shaped opening between two adjacent flow guiding elements of the plurality of flow guiding elements.

[0012] Furthermore, since each flow directing element is movably arranged in a direction into and out of the nozzle base, a nozzle is provided which obviates the need to manually change the setting of the mechanism when moving from a harder type of surface, such as a floor surface, to a softer type of surface, such as a carpet, and vice versa. As a result, a more user-friendly vacuum cleaner nozzle is provided.

[0013] In addition, since each flow guiding element is movably arranged in a direction entering the nozzle base and in a direction exiting the nozzle base, a nozzle is provided in which, when the flow guiding element reaches and abuts against particles or objects, the flow guiding element can allow particles and objects to reach the suction port by moving toward a corresponding retracted position.

[0014] Furthermore, since each flow guiding element is movably arranged in a direction into and out of the nozzle base, advantageous flow characteristics and an advantageous partial vacuum level can also be provided between the plurality of flow guiding elements and the suction port when cleaning softer types of surfaces such as carpets, furniture, etc. This is because the abutting contact between the portions of the softer types of surfaces and the flow guiding element can move the flow guiding element to a position between the retracted position and the extracted position.

[0015] Furthermore, since the nozzle comprises a plurality of flow guiding elements, each of which has a tapered cross-section and is movably arranged in a direction entering into and out of the nozzle base, a vacuum cleaner nozzle is provided which creates conditions for low friction between the nozzle and the surface to be cleaned even when cleaning softer types of surfaces such as carpets, furniture, etc.

[0016] Furthermore, due to the plurality of flow guiding elements a suction nozzle is provided which is able to guide particles and objects towards the suction port and allow them to reach the suction port in an effective manner also when cleaning softer types of surfaces.

[0017] Accordingly, there is provided a vacuum cleaner nozzle which overcomes or at least alleviates at least some of the above problems and disadvantages.As a result, the above objects are achieved.

[0018] Optionally, each flow guiding element is airtight. Thus, during the use of the nozzle, further advantageous flow characteristics can be provided towards the suction port. In addition, when cleaning softer types of surfaces such as carpets, furniture, etc., further advantageous partial vacuum levels can also be provided between multiple flow guiding elements and the suction port. In addition, a vacuum cleaner nozzle having conditions and characteristics suitable for manufacturing and assembling in a cost-effective manner is provided. In addition, a vacuum cleaner nozzle is provided that provides conditions for the improved ability to guide particles and objects towards the suction port in an effective manner.

[0019] Optionally, each flow directing element comprises a resilient material, preferably a portion of the flow directing element that is configured to face the floor surface during operation of the nozzle. Thereby, a vacuum cleaner nozzle is provided that has a lower likelihood of damaging delicate surfaces during use. Furthermore, a vacuum cleaner nozzle is provided that provides for less noise generation during use.

[0020] Optionally, each flow guiding element is configured to move toward the retracted position when a force is applied to the flow guiding element in the direction of entering the nozzle base. Thus, when cleaning softer types of surfaces such as carpets, furniture, etc., further favorable flow characteristics and further favorable partial vacuum levels can also be provided between multiple flow guiding elements and the suction port. This is because the abutment contact between the parts of the surface being cleaned and these flow guiding elements can move the flow guiding element to a position between the retracted position and the extraction position. In addition, such a vacuum cleaner nozzle is provided, which further avoids the need to manually change the setting of the mechanism when moving from a harder type of surface such as a floor surface to a softer type of surface such as a carpet (and vice versa). In addition, such a vacuum cleaner nozzle is provided, which is also for guiding particles and objects toward the suction port in an effective manner when cleaning softer types of surfaces and allowing particles and objects to reach the improved ability of the suction port to create conditions.

[0021] Optionally, one or more of the plurality of flow directing elements are configured to move towards the extraction position at least in part by gravity. Thus, a vacuum cleaner nozzle is provided that further obviates the need to manually change the setting of the mechanism when moving from a harder type of surface, such as a floor surface, to a softer type of surface, such as a carpet (and vice versa). In addition, a vacuum cleaner nozzle is provided that has conditions and characteristics suitable for manufacturing and assembling in a cost-effective manner.

[0022] Optionally, one or more of the plurality of flow guiding elements are biased towards the extraction position by at least one spring element. Thus, a vacuum cleaner nozzle is provided, which further avoids the need to manually change the setting of the mechanism when moving from a harder type of surface such as a floor surface to a softer type of surface such as a carpet (and vice versa). In addition, it can be ensured that each flow guiding element can also be moved to its extraction position when the nozzle is held in a non-horizontal orientation, such as when cleaning a vertical surface, etc. In addition, a vacuum cleaner nozzle with conditions and characteristics suitable for manufacturing and assembling in a cost-effective manner is provided.

[0023] Optionally, the nozzle base comprises a first base portion comprising a first set of flow directing elements arranged in front of the suction port as seen relative to the forward movement direction of the nozzle. Thus, a vacuum cleaner nozzle is provided which provides for directing particles and objects towards the suction port in an effective manner when the nozzle is moved in a forward direction over a surface, while at the same time avoiding the need to manually change the setting of the mechanism when moving from a harder type of surface to a softer type of surface (or vice versa).

[0024] Optionally, the nozzle base comprises a second base portion comprising a second set of flow directing elements, which are arranged in front of the suction port as seen with respect to the reverse movement direction of the nozzle. Thus, a vacuum cleaner nozzle is provided that provides for directing particles and objects towards the suction port in an effective manner when the nozzle is moved in the reverse direction over the surface, while at the same time avoiding the need to manually change the setting of the mechanism when moving from a harder type of surface to a softer type of surface (or vice versa).

[0025] Optionally, the flow guiding elements of the second group of flow guiding elements have the same but mirrored design as the flow guiding elements of the first group of flow guiding elements. Thus, a vacuum cleaner nozzle having conditions and properties suitable for manufacturing and assembling in a cost-effective manner is provided. Furthermore, a vacuum cleaner nozzle having the same or at least similar operating properties when moving on a surface in a reverse movement direction and when moving on a surface in a forward movement direction is provided.

[0026] Optionally, the first group of flow guiding elements and the second group of flow guiding elements comprise the same number of flow guiding elements. Thus, a vacuum cleaner nozzle having conditions and characteristics suitable for manufacturing and assembling in a cost-effective manner is provided. Furthermore, a vacuum cleaner nozzle having the same or at least similar operating characteristics when moving on a surface in a reverse movement direction and when moving on a surface in a forward movement direction is provided.

[0027] Optionally, each flow guiding element comprises a wide section facing the suction port, and wherein the width of the wide section is greater than the distance between two adjacent flow guiding elements of the plurality of flow guiding elements. Thus, a vacuum cleaner nozzle is provided that can guide particles and objects towards the suction port of the nozzle in an effective manner while creating conditions for favorable flow characteristics towards the suction port during use of the nozzle.

[0028] Optionally, each flow directing element comprises a first side surface and a second side surface, the first side surface and the second side surface being arranged so that a cross section of the flow directing element is tapered away from the suction port as seen along a direction from the suction port toward the flow directing element, and wherein an angle between each of the first side surface and the second side surface and one of the forward movement direction and the reverse movement direction of the nozzle is in the range of 10 to 65 degrees, or in the range of 20 to 40 degrees. Thus, a vacuum cleaner nozzle is provided that provides for favorable flow characteristics toward the suction port during use of the nozzle and is capable of directing particles and objects toward the suction port in an effective manner.

[0029] Optionally, each flow guiding element comprises a wide section facing the suction port and a narrow section facing away from the suction port, and wherein the narrow section comprises an elongated portion having an extension direction substantially parallel to the forward movement direction and the reverse movement direction of the nozzle. Thus, a vacuum cleaner nozzle is provided in which a plurality of flow guiding elements can be moved in a more efficient manner in the direction towards the respective retracted position when the flow guiding elements abut against a raised portion of a surface (such as an edge of a carpet, etc.) or against an object or particle.

[0030] Optionally, each flow guiding element comprises a wide section facing the suction port and a narrow section facing away from the suction port, and wherein each flow guiding element comprises a first surface, the first surface being substantially parallel to the floor surface at least when the guiding element is in one of the retracted position and the extracted position, and wherein the narrow section comprises a front surface angled relative to the first surface. Thus, a vacuum cleaner nozzle is provided in which a plurality of flow guiding elements can be moved in a more efficient manner in the direction towards the respective retracted position when the flow guiding element abuts against a raised portion of a surface (such as an edge of a carpet, etc.) or against an object or particle.

[0031] Optionally, the nozzle base comprises a plurality of apertures, and wherein each flow directing element is at least partially arranged inside an aperture of the plurality of apertures. Thus, a vacuum cleaner nozzle is provided which has conditions and properties suitable for manufacturing and assembling in a cost-effective manner, while having conditions for obtaining the advantages mentioned above.

[0032] Optionally, the nozzle base comprises a plurality of recesses, each of which is arranged between a flow directing element of the plurality of flow directing elements and the suction port. Thus, a vacuum cleaner nozzle is provided which allows for a design in which a portion of each of the flow directing elements configured to face the floor surface during use of the nozzle can have a different angle than a surface of the nozzle base adjacent to the flow directing element, while obtaining a substantially horizontal interface between the portion of the flow directing element and the bounding surface of the recess when the flow directing element is in the retracted position.

[0033] Optionally, each of the plurality of recesses is arranged so that when the flow directing element is in the retracted position, the delimiting surface of the recess is substantially flush with the portion of the flow directing element that is configured to face the floor surface during operation of the nozzle. Thereby, it can be ensured that the nozzle base of the vacuum cleaner nozzle can be moved closer to softer types of surfaces (such as surfaces of carpets, furniture, etc.) while also obtaining favorable flow characteristics towards the suction port when the flow directing element is in the retracted position.

[0034] Optionally, the suction port and the plurality of flow guiding elements are arranged so that the direction from the suction port towards the respective flow guiding element is parallel to the forward movement direction and the reverse movement direction of the nozzle. Thus, a vacuum cleaner nozzle is provided which provides for guiding particles and objects towards the suction port in an effective manner when the nozzle is moved over a surface, while also providing for favorable flow characteristics and favorable partial vacuum levels between the plurality of flow guiding elements and the suction port when cleaning softer types of surfaces such as carpets, furniture, etc.

[0035] Optionally, the nozzle comprises a plurality of wheels, each of which has a rolling direction parallel to the forward and reverse directions of movement of the nozzle. Thus, a vacuum cleaner nozzle is provided which provides for low friction between the nozzle and the surface to be cleaned. Furthermore, a vacuum cleaner nozzle is provided which provides for ensuring that the vacuum cleaner nozzle moves in a predetermined direction during its operation.

[0036] Optionally, the nozzle comprises a height adjustment mechanism for varying the relative distance between the floor engaging portions of the wheels and the nozzle base. Thus, a more user friendly vacuum cleaner nozzle is provided which allows the user to select whether the wheels should be in the extracted or retracted position and thereby also the distance between the nozzle base and the surface to be cleaned.

[0037] Optionally, the flow directing elements are configured to adopt respective retracted positions relative to the nozzle base when the relative distance between the floor engaging portions of the wheels and the nozzle base decreases. Thus, a more user-friendly vacuum cleaner nozzle is provided, which allows the user to select whether flow directing elements should be in respective retracted positions during use of the vacuum cleaner nozzle.

[0038] Optionally, each flow guiding element is arranged linearly movably between the retracted position and the extracted position in the direction of entering and exiting the nozzle base. Thus, a vacuum cleaner nozzle is provided, which has conditions and characteristics suitable for manufacturing and assembling in a cost-effective manner, while having conditions for obtaining the advantages mentioned above.

[0039] Optionally, each flow directing element is arranged linearly movably in a direction substantially perpendicular to the floor surface when the nozzle is positioned in an upright use position on the floor surface. Thus, a vacuum cleaner nozzle is provided which has conditions and properties suitable for cost-effective manufacture and assembly while providing for directing particles and objects towards the suction port in an effective manner during use of the vacuum cleaner nozzle.

[0040] Optionally, each flow guiding element is pivotally arranged between the retracted position and the extracted position. Thus, a vacuum cleaner nozzle is provided which has conditions and properties suitable for cost-effective manufacture and assembly while providing for guiding particles and objects towards the suction port in an effective manner during use of the vacuum cleaner nozzle.

[0041] Optionally, each flow directing element comprises a first surface and a second surface, each of which faces in a direction towards the floor surface during operation of the suction nozzle, wherein the first surface is substantially parallel to the floor surface when the flow directing element is in the extraction position, and wherein the second surface is substantially parallel to the floor surface when the flow directing element is in the retracted position. Thereby, favorable flow characteristics and favorable partial vacuum levels can be provided between the plurality of flow directing elements and the suction port when the flow directing element is in the extraction position and when the flow directing element is in the retracted position.

[0042] According to a second aspect of the invention, the object is achieved by a vacuum cleaner comprising a vacuum cleaner nozzle according to some embodiments of the present disclosure.

[0043] Since the vacuum cleaner comprises a vacuum cleaner nozzle according to some embodiments, a vacuum cleaner is provided which comprises a vacuum cleaner nozzle which creates conditions for favorable flow characteristics towards the suction port during use of the nozzle, while being able to guide particles and objects towards the suction port in an effective manner and allow particles and objects to reach the suction port during use of the nozzle.

[0044] Furthermore, a vacuum cleaner is provided which obviates the need to manually change the settings of the mechanism when moving from a harder type of surface, such as a floor surface, to a softer type of surface, such as a carpet, and vice versa. As a result, a more user-friendly vacuum cleaner is provided.

[0045] In addition, a vacuum cleaner is provided, which comprises a vacuum cleaner nozzle, which also provides for favorable flow characteristics and favorable partial vacuum levels between the plurality of flow guiding elements and the suction port when cleaning softer types of surfaces, such as carpets, furniture, etc. This is because the abutting contact between portions of the softer types of surfaces and the flow guiding elements can move the flow guiding elements to a position between the retracted position and the extracted position.

[0046] In addition, a vacuum cleaner is provided which also provides for low friction between the nozzle and the surface to be cleaned when cleaning softer types of surfaces such as carpets, furniture and the like.

[0047] Furthermore, a vacuum cleaner is provided which comprises a vacuum cleaner nozzle which is able to direct particles and objects towards the suction port in an effective manner also when cleaning softer types of surfaces.

[0048] Accordingly, a vacuum cleaner is provided which overcomes or at least alleviates at least some of the above problems and disadvantages.As a result, the above objects are achieved.

[0049] Further features of, and advantages with, the present invention will become apparent when studying the appended claims and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Various aspects of the present invention, including its specific features and advantages, will be readily understood from the exemplary embodiments discussed in the following detailed description and accompanying drawings, in which:

[0051] Figure 1 schematically illustrates a vacuum cleaner according to some embodiments,

[0052] Figure 2 Shown Figure 1 A side view of the vacuum cleaner nozzle of the vacuum cleaner shown in FIG.

[0053] Figure 3 showing a perspective view of the underside of a vacuum cleaner nozzle according to some embodiments of the present disclosure,

[0054] Figure 4 Shows a direct line towards Figure 3 A view of the nozzle base of a vacuum cleaner nozzle shown in FIG.

[0055] Figure 5 Shown Figure 3 An enlarged perspective view of the nozzle base of a vacuum cleaner nozzle is shown in FIG.

[0056] Figure 6 Shown Figure 5 An enlarged perspective view of a nozzle base, wherein a flow guiding element of a plurality of flow guiding elements has been moved to a corresponding retracted position,

[0057] Figure 7 Shown Figure 3 A first cross-section of a portion of a vacuum cleaner nozzle is shown in

[0058] Figure 8a Shown Figure 3 A second cross-section of a portion of a vacuum cleaner nozzle is shown in FIG.

[0059] Figure 8b Shown Figure 8a a second cross section in which the flow directing element has been moved to a retracted position,

[0060] Fig. 9 Shows reference Figures 3 to 8b An enlarged view of a pair of flow guiding elements of a nozzle base of an explained vacuum cleaner nozzle,

[0061] Fig.10 A perspective view showing the underside of a vacuum cleaner nozzle according to some embodiments of the present disclosure,

[0062] Fig.11 Shows a direct line towards Fig.10 A view of the nozzle base of a vacuum cleaner nozzle shown in FIG.

[0063] Fig.12 Shown Fig.10 An enlarged perspective view of the nozzle base of a vacuum cleaner nozzle is shown in FIG.

[0064] Fig.13 Shown Fig.12 An enlarged perspective view of a nozzle base, wherein a flow guiding element of a plurality of flow guiding elements has been moved to a corresponding retracted position,

[0065] Fig.14 Shown Fig.10 A first cross-section of a portion of a vacuum cleaner nozzle is shown in

[0066] Fig.15a Shown Fig.10 A second cross-section of a portion of a vacuum cleaner nozzle is shown in FIG.

[0067] Fig.15b Shown Fig.15a a second cross-section in which the flow directing element has been moved to a retracted position, and

[0068] Fig.16 Shows reference Figures 10 to 15b An enlarged view of a pair of flow guiding elements of a nozzle base of an illustrated vacuum cleaner nozzle. DETAILED DESCRIPTION

[0069] Now various aspects of the present invention will be described more fully. The same reference numerals refer to the same elements throughout. For the sake of brevity and / or clarity, well-known functions or constructions will not necessarily be described in detail.

[0070] Figure 1 A vacuum cleaner 20 according to some embodiments of the present disclosure is schematically illustrated. According to the illustrated embodiment, the vacuum cleaner 20 is a canister vacuum cleaner. However, according to further embodiments, the vacuum cleaner 20 as referred to herein may be another type of vacuum cleaner, such as a drum vacuum cleaner, a handheld vacuum cleaner, a stick vacuum cleaner, a robot vacuum cleaner, a central vacuum cleaner, etc.

[0071] The vacuum cleaner 20 includes a vacuum cleaner body 22 and an air pump assembly (such as a centrifugal fan and a motor) disposed inside the vacuum cleaner body 22 , wherein the air pump assembly is configured to generate an air flow from an air inlet 24 of the vacuum cleaner 20 to an air outlet 26 of the vacuum cleaner 20 .

[0072] exist Figure 1 , a vacuum cleaner hose 28 is schematically illustrated. The vacuum cleaner hose 28 is connected to the air inlet 24 of the vacuum cleaner 20. The vacuum cleaner hose 28 comprises a wand 34 attached to an end thereof.

[0073] The vacuum cleaner 20 further comprises a vacuum cleaner nozzle 1, 1'. For the sake of brevity and clarity, the vacuum cleaner nozzle 1, 1' is referred to as "nozzle 1, 1'" in some places in this document. Figure 1 In FIG. 2 , the suction nozzle 1 , 1 ′ is shown attached to a wand 34 of a vacuum cleaner hose 28 of a vacuum cleaner 20 .

[0074] Figure 2Shown Figure 1 A side view of a vacuum cleaner nozzle 1, 1' is shown in FIG. Figure 2 , the suction nozzle 1, 1 ' is shown positioned in an upright use position on a floor surface 30. The suction nozzle 1, 1 ' comprises a nozzle base 3. The nozzle base 3 is configured to face the floor surface 30 when the suction nozzle 1, 1 ' is positioned in an upright use position on the floor surface 30. In other words, the nozzle base 3 is configured to face the floor surface 30 during operation of the suction nozzle 1, 1 '.

[0075] The suction nozzle 1, 1' is configured to move during operation along a forward movement direction fd and a reverse movement direction rd of the suction nozzle 1, 1'. The reverse movement direction rd is opposite to the forward movement direction fd and is therefore also parallel to the forward movement direction. According to the embodiment shown, the suction nozzle 1, 1' comprises a plurality of wheels 4 arranged at the suction nozzle base 3, wherein the wheels 4 are configured to roll against the surface 30 during operation of the suction nozzle 1, 1'. According to the embodiment shown, each wheel 4 of the plurality of wheels 4 has a rolling direction parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1, 1'.

[0076] Figure 3 A perspective view of the underside of a vacuum cleaner nozzle 1 according to some embodiments of the present disclosure is shown. Figure 1 and Figure 2 The vacuum cleaner nozzles 1, 1' shown in the figure can be according to Figure 3 In other words, Figure 1 The vacuum cleaner 20 shown in FIG. 1 may include a vacuum cleaner according to Figure 3 The vacuum cleaner nozzle 1 of the embodiment shown in FIG.

[0077] like Figures 1 to 3 As indicated, according to the embodiment shown, the nozzle 1 comprises a connecting section 36. According to the embodiment shown, the connecting section 36 is tubular. Figure 1 In the embodiment shown in FIG. 1 , a part of the rod 34 of the vacuum cleaner 20 protrudes into the connecting section 36 of the suction nozzle 1 .

[0078] exist Figure 3 , the nozzle base 3 of the nozzle 1 can be seen more clearly. According to the illustrated embodiment, the nozzle 1 comprises four wheels 4 arranged at the nozzle base 3. However, according to further embodiments, the nozzle 1 may comprise another number of wheels 4 arranged at the nozzle base 3.

[0079] As in Figure 3 As best seen in FIG. 1 , according to the illustrated embodiment, the suction nozzle 1 comprises a pair of support wheels 54. The pair of support wheels 54 is arranged between the suction nozzle base 3 and the connection section 36 of the suction nozzle 1. Figure 2As indicated, the pair of support wheels 54 is configured to abut against the surface 30 during operation of the suction nozzle 1. Furthermore, according to the illustrated embodiment, each support wheel 54 of the pair of support wheels 54 has a rolling direction parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1.

[0080] In addition, as in Figure 3 As can be seen in the figure, the nozzle base 3 comprises a suction port 5. The suction port 5 is fluidly connected to the interior of the connection section 36 of the nozzle 1. In this way, when the connection section 36 of the nozzle 1 is connected to the air inlet 24 of the vacuum cleaner 20, as shown in FIG. Figure 1 As shown, operation of the air pump assembly of the vacuum cleaner 20 causes suction and a partial vacuum at the suction port 5 of the nozzle 1 .

[0081] As in Figure 3 As can be seen in FIG. 1 , according to the illustrated embodiment, the suction port 5 is elongated along an elongation direction de5. According to the illustrated embodiment, the elongation direction de5 of the suction port 5 is perpendicular to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1.

[0082] In addition, as in Figure 3 As can be seen in FIG. 1 , the nozzle base 3 of the nozzle 1 comprises a plurality of flow guiding elements 7 arranged adjacent to the suction port 5. For the sake of brevity and clarity, Figure 3 In FIG. 2 , only some of the flow guiding elements 7 are provided with the reference sign “ 7 ”.

[0083] Figure 4 Shows a direct line towards Figure 3 3. As above, for the sake of brevity and clarity, in Figure 4 In FIG. 1 , only some of the flow guiding elements 7 are provided with the reference numeral “7”. Figure 3 and Figure 4 As can be seen in FIG. 5 , each flow guiding element 7 of the plurality of flow guiding elements 7 has a cross section which tapers away from the suction port 5 as seen along a direction d1 , d2 from the suction port 5 towards the flow guiding element 7 .

[0084] In addition, as in Figure 3 and Figure 4As shown in , according to the illustrated embodiment, the nozzle base 3 comprises a first base portion 31 comprising a first group s1 of flow guiding elements 7, wherein the first group s1 of flow guiding elements 7 are arranged in front of the suction port 5 as seen with respect to the forward movement direction fd of the nozzle 1. Furthermore, the nozzle base 3 comprises a second base portion 32 comprising a second group s2 of flow guiding elements 7, wherein the second group s2 of flow guiding elements 7 are arranged in front of the suction port 5 as seen with respect to the reverse movement direction rd of the nozzle 1.

[0085] In the following, unless otherwise indicated, reference is made to Figures 1 to 4 In more detail, according to the illustrated embodiment, each flow guiding element 7 of the first group s1 of flow guiding elements 7 has a cross section that tapers away from the suction port 5 as seen along a respective first direction d1 from the suction port 5 towards the flow guiding element 7. Likewise, each flow guiding element 7 of the second group s2 of flow guiding elements 7 has a cross section that tapers away from the suction port 5 as seen along a respective second direction d2 from the suction port 5 towards the flow guiding element 7.

[0086] According to the embodiment shown, the respective first directions d1 are parallel to and point in the same direction as the forward movement direction fd of the nozzle 1. Similarly, according to the embodiment shown, the respective second directions d2 are parallel to and point in the same direction as the reverse movement direction rd of the nozzle 1.

[0087] In other words, according to the illustrated embodiment, each of the plurality of flow guiding elements 7 has a cross section that is tapered away from the suction port 5 as seen along directions d1, d2 from the suction port 5 toward the flow guiding element 7, wherein the directions d1, d2 from the suction port 5 toward the flow guiding element 7 are parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1. Furthermore, according to the illustrated embodiment, the suction port 5 and the plurality of flow guiding elements 7 are arranged such that the directions d1, d2 from the suction port 5 toward the respective flow guiding elements 7 are parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1.

[0088] exist Figure 2 In the figure, the direction d4 entering the nozzle base 3 and the direction d3 exiting from the nozzle base 3 are indicated. According to the embodiment herein, each of the plurality of flow guiding elements 7 is movably arranged between a retracted position and an extracted position in the direction d4 entering the nozzle base 3 and the direction d3 exiting from the nozzle base. Figure 3 and Figure 4 In FIG. 1 , each flow guiding element 7 is shown in the extracted position.

[0089] Figure 5 Shown Figure 3 An enlarged perspective view of the nozzle base 3 of the nozzle 1 is shown in FIG. Figure 5 In FIG. 1 , a flow guiding element 7 of the plurality of flow guiding elements 7 is shown in a corresponding withdrawn position. Figure 5 as well as Figure 3 It can be clearly seen in FIG. 1 that the flow guiding element 7 protrudes from the nozzle base 3 when the flow guiding element 7 is in the corresponding extracted position.

[0090] Figure 6 Shown Figure 5 FIG. 1 is an enlarged perspective view of the nozzle base 3 of FIG. 1 , wherein the flow guiding elements 7 of the plurality of flow guiding elements 7 have been moved to the corresponding retracted positions. Figure 6 As can be clearly seen in the drawing, according to the illustrated embodiment, the retracted position constitutes a position in which a flow guiding element 7 of the plurality of flow guiding elements 7 does not protrude from the nozzle base 3 .

[0091] The retracted position may constitute a position in which the flow directing element 7 is moved to a position in which a portion 16 of the flow directing element 7 arranged to face the floor surface during operation of the suction nozzle 1 is moved to a position inside the nozzle base 3. Furthermore, the retracted position may constitute a position in which the flow directing element 7 is moved to a position in which a portion 16 of the flow directing element 7 arranged to face the floor surface during operation of the suction nozzle 1 is moved to a position in which this portion 16 of the flow directing element 7 is at least substantially flush with a surface of the nozzle base 3 adjacent to the flow directing element 7.

[0092] The expression "retracted position" as used herein is intended to encompass the fully retracted position, and the expression "extracted position" is intended to encompass the fully extracted position. However, as explained below, each of the plurality of flow directing elements 7 is movably arranged relative to the nozzle base 3, such that the flow directing element 7 can adopt positions between the retracted position and the extracted position.

[0093] As in Figure 5 and Figure 6 As seen in , according to the illustrated embodiment, the nozzle base 3 comprises a plurality of orifices 9, wherein each flow directing element 7 is at least partially movably arranged inside an orifice 9 of the plurality of orifices 9 between a retracted position and an extracted position.

[0094] Figure 7 Shown Figure 3 A first cross-section of a part of a vacuum cleaner nozzle 1 is shown in FIG. Figure 7The first cross section is obtained in a plane parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1. Furthermore, as seen in a direction perpendicular to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1, the first cross section passes through a portion of the suction nozzle base 3 between two adjacent flow guiding elements 7. Figure 7 In FIG. 5 , the suction nozzle 1 is shown positioned in an upright use position on a floor surface 30 and the flow guiding element 7 is shown in a corresponding extracted position.

[0095] Figure 8a Shown Figure 3 A second cross section of a portion of a vacuum cleaner nozzle 1 is shown in FIG. Figure 7 The first section in Figure 8a The second cross section is obtained in a plane parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1. However, the second cross section passes through a portion of the suction nozzle base 3 where the flow guiding element 7 is arranged. In other words, Figure 8a The second cross section of extends through the flow guiding element 7 in a plane parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1. Figure 8a In FIG. 5 , the suction nozzle 1 is shown positioned in an upright use position on a floor surface 30 and the flow guiding element 7 is shown in an extracted position.

[0096] Figure 8b Shown Figure 8a A second cross section in which the flow directing element 7 has been moved to the retracted position. Figures 3 to 8b In the embodiment shown in FIG. 1 , each flow guiding element 7 is arranged linearly movable between a retracted position and an extracted position in a direction d4 into the nozzle base 3 and in a direction d3 out of the nozzle base. Figures 3 to 8b In the embodiment shown in FIG. 2 , each flow guiding element 7 is arranged linearly movably in a direction d3 , d4 substantially perpendicular to the floor surface 30 , when the suction nozzle 1 is positioned in an upright use position on the floor surface 30 .

[0097] In the following, unless otherwise indicated, reference is made to Figures 1 to 8b . According to an embodiment herein, each flow guiding element 7 is configured to move toward the retracted position when a force is applied to the flow guiding element 7 in the direction d4 of entering the nozzle base 3. Furthermore, according to the illustrated embodiment, each flow guiding element 7 is configured to move toward the withdrawal position at least partially by gravity. According to a further embodiment, one or more flow guiding elements 7 of the plurality of flow guiding elements 7 may be configured to move toward the withdrawal position at least partially by gravity. In addition, one or more flow guiding elements 7 of the plurality of flow guiding elements 7 may be biased toward the withdrawal position by at least one spring element 8.

[0098] In more detail, according to the illustrated embodiment, the nozzle 1 comprises an elongated connecting structure 38 connecting a plurality of flow guiding elements 7 such that the plurality of flow guiding elements 7 can move in unison. Furthermore, the nozzle 1 comprises a spring element 8 in the form of a helical spring, which is configured to bias the plurality of flow guiding elements 7 in a direction d3 out of the nozzle base 3. According to a further embodiment, the nozzle 1 may comprise one spring element per flow guiding element 7, wherein each spring element is configured to bias one flow guiding element 7 in a direction d3 out of the nozzle base 3.

[0099] Since the nozzle base 3 of the nozzle 1 comprises a plurality of flow guiding elements 7, each having a cross section tapering away from the suction port 5 as seen in the directions d1, d2 from the suction port 5 towards the flow guiding element 7, a vacuum cleaner nozzle 1 is provided which creates conditions for favourable flow characteristics towards the suction port 5 while being able to guide particles and objects towards the suction port 5 in an effective manner during use of the nozzle 1. This is because the tapered cross section of the flow guiding element 7 forms a funnel-shaped opening between two adjacent flow guiding elements 7.

[0100] In addition, since each flow guide element 7 is movably arranged in the direction d4 of entering the nozzle base 3 and the direction d3 of exiting the nozzle base, a nozzle 1 is provided that avoids the need to manually change the setting of the mechanism when moving from a harder type of surface such as a floor surface to a softer type of surface such as a carpet (and vice versa). This is because the abutment contact between the flow guide element 7 and the protruding part of the surface area to be cleaned (such as the edge of the carpet, etc.), or the abutment contact between the flow guide element 7 and the object or particle can make the flow guide element 7 displaced in the direction d4 of entering the nozzle base 3. When the abutment contact is released and / or when the abutment force is reduced, the flow guide element 7 can be displaced in the direction d3 of exiting the nozzle base 3 by gravity and / or by the biasing force of one or more spring elements 8. As a result, a more user-friendly vacuum cleaner nozzle 1 is provided. In addition, the nozzle 1 can allow particles and objects to reach the suction port 5 in an effective manner.

[0101] In addition, since each flow guiding element 7 is movably arranged in the direction d4 into the nozzle base 3 and in the direction d3 out of the nozzle base, favorable flow characteristics and favorable partial vacuum levels can also be provided between the plurality of flow guiding elements 7 and the suction port 5 when cleaning softer types of surfaces such as carpets, furniture, etc. This is because the abutting contact between the portions of the softer types of surfaces and the flow guiding elements 7 can move the flow guiding elements 7 to a position between the retracted position and the extracted position.

[0102] In addition, since the suction nozzle 1 includes a plurality of flow guiding elements 7, each of which has a tapered cross-section and is movably arranged in a direction d4 entering the suction nozzle base 3 and a direction d3 exiting the suction nozzle base, a vacuum cleaner nozzle 1 is provided that creates conditions for low friction between the suction nozzle 1 and the surface to be cleaned even when cleaning softer types of surfaces such as carpets, furniture, etc.

[0103] Furthermore, due to the plurality of flow guiding elements 7, a suction nozzle 1 is provided which is able to guide particles and objects towards the suction port 5 in an effective manner also when cleaning softer types of surfaces.

[0104] As in Figure 3 and Figure 4 As best seen in FIG. 1 , according to the illustrated embodiment, the flow guiding elements 7 of the second set s2 of flow guiding elements 7 have an identical but mirrored design as the flow guiding elements 7 of the first set s1 of flow guiding elements 7. According to further embodiments, the flow guiding elements 7 of the second set s2 of flow guiding elements 7 may have substantially the same but mirrored design as the flow guiding elements 7 of the first set s1 of flow guiding elements 7.

[0105] In addition, as in Figure 3 and Figure 4 As best seen in FIG. 1 , according to the illustrated embodiment, the first set s1 and the second set s2 of flow directing elements 7 comprise the same number of flow directing elements 7. According to a further embodiment, the first set s1 and the second set s2 of flow directing elements 7 may comprise substantially the same number of flow directing elements 7. Due to these features, a vacuum cleaner nozzle 1 having conditions and properties suitable for manufacturing and assembling in a cost-effective manner is provided. Furthermore, a vacuum cleaner nozzle 1 having the same or at least similar operating properties when moving on a surface in a reverse movement direction rd as when moving on a surface in a forward movement direction fd is provided.

[0106] In addition, as in Figure 3 and Figure 4 As best seen in FIG. 1 , according to the illustrated embodiment, each of the first group s1 and the second group s2 of flow guiding elements 7 comprises ten flow guiding elements 7. In other words, according to the illustrated embodiment, the nozzle base 3 of the nozzle 1 comprises a total of twenty flow guiding elements 7. According to further embodiments, the number of flow guiding elements 7 of each of the first group s1 and the second group s2 of flow guiding elements 7 may be an integer in the range of 4 to 26, or an integer in the range of 7 to 15. Furthermore, according to further embodiments, the total number of flow guiding elements 7 of the nozzle base 3 may be an integer in the range of 4 to 52, or an integer in the range of 14 to 30.

[0107] According to the illustrated embodiment, each flow directing element 7 is air-impermeable. According to these embodiments, each flow directing element 7 may be formed of a solid or composite material arranged to not allow air to pass through the flow directing element 7. Each flow directing element 7 may comprise an elastic material, such as a thermoplastic elastomer, silicone, etc., preferably a portion 16 of the flow directing element 7 configured to face the floor surface 30 during operation of the suction nozzle 1. As an alternative or in addition, each flow directing element 7 may comprise a polymer material, such as plastic.

[0108] Since, according to the illustrated embodiment, each flow guiding element 7 is airtight, further advantageous flow characteristics can be provided towards the suction port 5 during use of the nozzle 1. Furthermore, further advantageous partial vacuum levels can also be provided between the plurality of flow guiding elements 7 and the suction port 5 when cleaning softer types of surfaces such as carpets, furniture, etc. Furthermore, a vacuum cleaner nozzle 1 having conditions and characteristics suitable for manufacturing and assembling in a cost-effective manner is provided. Furthermore, a vacuum cleaner nozzle 1 is provided that provides for an improved ability to guide particles and objects towards the suction port 5 in an effective manner.

[0109] Fig. 9 Shows reference Figures 3 to 8b An enlarged view of a pair of flow guiding elements 7 of the nozzle base 3 of a vacuum cleaner nozzle 1 is explained. Fig. 9 The flow directing element 7 on the left in the middle is shown arranged in the orifice 9 and the surface 25 ′ adjacent to the flow directing element 7 is shown, while Fig. 9 The opening on the middle right and the surface of the adjacent flow guiding element 7 are omitted for reasons of simplicity and clarity. Fig. 9 is drawn to scale and the flow directing element 7 is illustrated as seen in a direction straight towards the base of the nozzle.

[0110] In the following, unless otherwise indicated, reference is made to Figures 1 to 9 Each flow guiding element 7 includes a wide section 11. The wide section 11 of each flow guiding element 7 faces the suction port 5. Fig. 9 As indicated in , the width w of the wide section 11 is greater than the distance D1 between two adjacent flow guiding elements 7 of the plurality of flow guiding elements 7. Thus, a suction nozzle 1 is provided which is capable of guiding particles and objects towards the suction port 5 in an effective manner for the suction nozzle 1 and creating conditions for favorable flow characteristics towards the suction port 5 during use of the suction nozzle 1.

[0111] According to the illustrated embodiment, the width w of the wide section 11 is about 88% greater than the distance D1 between two adjacent flow guiding elements 7 of the plurality of flow guiding elements 7. According to further embodiments, the width w of the wide section 11 may be 5% to 150% greater than the distance D1 between two adjacent flow guiding elements 7 of the plurality of flow guiding elements 7, or 50% to 110% greater.

[0112] The width w of the wide section 11 of the flow guiding element 7 and the distance D1 between two adjacent flow guiding elements 7 are measured in a direction perpendicular to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1 and parallel to the floor surface 30, and when the suction nozzle 1 is positioned in an upright use position on the floor surface, the suction nozzle base 3 is configured to face the floor surface.

[0113] According to the illustrated embodiment, the width w of the wide section 11 of each flow guiding element 7 is about 15 mm. According to further embodiments, the width w of the wide section 11 of each flow guiding element 7 may be in the range of 6 to 40 mm, or in the range of 10 to 20 mm.

[0114] Furthermore, according to the illustrated embodiment, the distance D1 between two adjacent flow guiding elements 7 of the plurality of flow guiding elements 7 is about 8 mm. According to further embodiments, the distance D1 between two adjacent flow guiding elements 7 of the plurality of flow guiding elements 7 may be in the range of 2 mm to 24 mm, or in the range of 4 mm to 12 mm.

[0115] According to the illustrated embodiment, each of the plurality of flow guiding elements 7 includes a first side surface 13 and a second side surface 15, which are arranged so that a cross section of the flow guiding element 7 is tapered away from the suction port 5 as seen along directions d1, d2 from the suction port 5 toward the flow guiding element 7. According to the illustrated embodiment, an angle a1, a2 between each of the first side surface 13 and the second side surface 15 and one of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1 is approximately 29 degrees. According to further embodiments, an angle a1, a2 between each of the first side surface 13 and the second side surface 15 and one of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1 may be in the range of 10 to 65 degrees, or may be in the range of 20 to 40 degrees.

[0116] According to the illustrated embodiment, each of the plurality of flow guiding elements 7 comprises a narrow section 17 facing away from the suction port 5. The narrow section 17 comprises an elongated portion 19 having an elongation direction de substantially parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1. Figure 8a and Figure 8b As indicated in FIG. 1 , when the nozzle 1 is positioned in an upright use position on a floor surface 30, the flow directing element 7 comprises a first surface 41 which is substantially parallel to the floor surface 30. Figure 8a and Figure 8b It can be seen that according to these embodiments, when the flow guiding element 7 is in the withdrawn position (such as Figure 8a shown) and when the flow directing element 7 is in the retracted position (as shown Figure 8b As shown, the first surface 41 is substantially parallel to the floor surface 30.

[0117] The narrow section 17 of the flow directing element 7 comprises a front surface 23 which is angled relative to the first surface 41. In other words, the front surface 23 faces the floor surface 30 at an angle a3, whereas the first surface 41 faces directly towards the floor surface 30 when the nozzle 1 is positioned in an upright use position on the floor surface 30. Figure 8b Angle a3 is indicated in . Figure 8b The angle a3 in the embodiment is about 46 degrees, but may be in the range of 10 to 80 degrees, or in the range of 20 to 70 degrees. The angle a3 may be when the nozzle 1 is positioned on the floor surface 30 in an upright use position (e.g. Figure 8b ) is measured between the surface normal of the front surface 23 of the narrow section 17 and the floor surface 30. Figure 5 The front surface 23 of the narrow section 17 is also indicated in FIG.

[0118] Due to the narrow section 17 and its front surface 23 (which is angled relative to the first surface 41 and faces the floor surface 30 at an angle a3), when the flow directing elements 7 abut against a raised portion of a surface (such as the edge of a carpet, etc.) or against an object or a particle, the plurality of flow directing elements 7 can be moved in a more effective manner in the direction d4 toward the respective retracted position. According to some embodiments, the narrow section 17 and its front surface 23 may include an elastic material such as a thermoplastic elastomer, silicone, etc.

[0119] According to the illustrated embodiment, as seen in the direction d4 toward the nozzle base 3, each flow guiding element 7 has a triangular shape separated from a narrow section 17 of the flow guiding element 7, which narrow section can be said to form a section protruding from a first corner of the triangular shape, wherein the first corner of the triangular shape points in a direction parallel to one of the forward movement direction fd and the reverse movement direction rd of the nozzle 1.

[0120] According to the illustrated embodiment, the width w2 of the triangular portion of each flow guiding element 7 (measured in a direction parallel to one of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1) is about 12 mm. According to further embodiments, the width w2 of the triangular portion of each flow guiding element 7 (measured in a direction parallel to one of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1) may be in the range of 5 mm to 35 mm, or may be in the range of 8 mm to 16 mm.

[0121] Furthermore, according to the illustrated embodiment, the width w3 of the elongated portion 19 of each flow guiding element 7 (measured in a direction parallel to one of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1) is approximately 3.7 mm. According to further embodiments, the width w3 of the elongated portion 19 of each flow guiding element 7 (measured in a direction parallel to one of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1) may be in the range of 1 mm to 14 mm, or may be in the range of 2 mm to 7 mm.

[0122] like Figures 4 to 6 and Fig. 9 As indicated in FIG. 1 , the nozzle base 3 comprises a plurality of recesses 25, each of which is arranged between a flow guiding element 7 of the plurality of flow guiding elements 7 and the suction port 5. Each recess 25 of the plurality of recesses 25 is arranged such that when the flow guiding element 7 is in the retracted position, a delimiting surface 25' of the recess is substantially flush with a portion 16 of the flow guiding element 7 configured to face the floor surface 30 during operation of the nozzle 1. As a result, a vacuum cleaner nozzle 1 is provided which provides for a design in which the portion 16 of each of the flow guiding elements 7 configured to face the floor surface 30 during use of the nozzle 1 can have a different angle from a surface 40 of the nozzle base 3 adjacent to the flow guiding element 7, while a substantially horizontal interface is obtained between the portion 16 of the flow guiding element 7 and the delimiting surface 25' of the recess 5 when the flow guiding element 7 is in the retracted position. Thereby, it can be ensured that the nozzle base 3 of the vacuum cleaner nozzle 1 can be moved close to a softer type of surface (such as a carpet, furniture, etc.). Furthermore, advantageous flow characteristics towards the suction port 5 can also be obtained when the flow guiding element 7 is in a respectively retracted position. Figure 4 and Figure 7 A surface 40 of the nozzle base 3 adjacent to the flow directing element 7 is indicated in FIG.

[0123] like Figure 7As indicated in , according to the illustrated embodiment, the nozzle 1 comprises a height adjustment mechanism 29 for changing the relative distance between the floor engaging portion of the wheel 4 and the nozzle base 3. The height adjustment mechanism 29 is operably connected to a height adjustment knob 29'. Figure 1 , Figure 2 and Figure 7 Due to the height adjustment mechanism 29, a more user-friendly vacuum cleaner nozzle 1 is provided which allows the user to select whether the plurality of wheels 4 should be in the extracted position or the retracted position and thereby also the distance between the nozzle base 3 and the surface 30 to be cleaned.

[0124] Furthermore, according to the illustrated embodiment, the flow directing element 7 is configured to adopt a corresponding retracted position relative to the nozzle base 3 when the relative distance between the floor engaging portion of the wheel 4 and the nozzle base 3 is reduced, i.e. when the height adjustment mechanism 29 is controlled so that the plurality of wheels 4 are in a corresponding retracted position relative to the nozzle base 3. Thereby, a more user-friendly vacuum cleaner nozzle is provided, which allows the user to select whether the plurality of flow directing elements 7 should be in a corresponding retracted position during use of the vacuum cleaner nozzle 1.

[0125] Fig.10 A perspective view of the underside of a vacuum cleaner nozzle 1 ' according to some further embodiments of the present disclosure is shown. Figure 1 and Figure 2 The vacuum cleaner nozzles 1, 1' shown in the figure can be according to Fig.10 In other words, Figure 1 The vacuum cleaner 20 shown in FIG. 1 may include a vacuum cleaner according to Fig.10 The vacuum cleaner nozzle 1 ' of the embodiment shown in FIG.

[0126] [A large part of the text below is Figures 3 to 9 The descriptive text of Figures 10 to 16 The embodiment shown has been modified]

[0127] like Figure 1 , Figure 2 and Fig.10 As indicated, according to the embodiment shown, the nozzle 1 ' comprises a connecting section 36. According to the embodiment shown, the connecting section 36 is tubular. Figure 1 In the embodiment shown in FIG. 1 , a part of the rod 34 of the vacuum cleaner 20 protrudes into the connecting section 36 of the suction nozzle 1 ′.

[0128] exist Fig.10 In the figure, the nozzle base 3 of the nozzle 1' can be clearly seen. Fig.10In the embodiment shown in FIG. 1 , the suction nozzle 1 ′ comprises four wheels 4 arranged at the suction nozzle base 3 . However, according to further embodiments, the suction nozzle 1 ′ may comprise another number of wheels 4 arranged at the suction nozzle base 3 .

[0129] As in Fig.10 As best seen in FIG. 1 , according to the illustrated embodiment, the suction nozzle 1 ′ comprises a pair of support wheels 54. The pair of support wheels 54 is arranged between the suction nozzle base 3 and the connection section 36 of the suction nozzle 1 ′. Figure 2 As indicated, the pair of support wheels 54 is configured to abut against the surface 30 during operation of the suction nozzle 1'. Furthermore, according to the illustrated embodiment, each support wheel 54 of the pair of support wheels 54 has a rolling direction parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1'.

[0130] In addition, as in Fig.10 As can be seen in the figure, the nozzle base 3 includes a suction port 5. The suction port 5 is fluidly connected to the interior of the connection section 36 of the nozzle 1 '. In this way, when the connection section 36 of the nozzle 1 ' is connected to the air inlet 24 of the vacuum cleaner 20, as shown in FIG. Figure 1 As shown, operation of the air pump assembly of the vacuum cleaner 20 causes suction and a partial vacuum at the suction port 5 of the nozzle 1 '.

[0131] As in Fig.10 As can be seen in FIG. 1 , according to the illustrated embodiment, the suction port 5 is elongated along an elongation direction de5. According to the illustrated embodiment, the elongation direction de5 of the suction port 5 is perpendicular to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1 '.

[0132] In addition, as in Fig.10 As can be seen in FIG. 1 , the nozzle base 3 of the nozzle 1 ′ comprises a plurality of flow guiding elements 7 ′ arranged adjacent to the suction port 5 . Fig.10 In FIG. 2 , only some of the flow guiding elements 7 ′ are provided with the reference sign “ 7 ′”.

[0133] Fig.11 Shows a direct line towards Fig.10 3. As above, for the sake of brevity and clarity, in Fig.11 In FIG. 1 , only some of the flow guiding elements 7 ′ are provided with the reference numeral “ 7 ”. Fig.10 and Fig.11 As can be seen in FIG. 5 , each flow guiding element 7 ′ of the plurality of flow guiding elements 7 ′ has a cross section which tapers away from the suction port 5 as seen along a direction d1 , d2 from the suction port 5 towards the flow guiding element 7 ′.

[0134] In addition, as in Fig.10 and Fig.11 As indicated in , according to the illustrated embodiment, the nozzle base 3 comprises a first base portion 31 comprising a first group s1 of flow guiding elements 7', wherein the first group s1 of flow guiding elements 7' are arranged in front of the suction port 5 as seen in the forward movement direction fd of the nozzle 1'. Furthermore, the nozzle base 3 comprises a second base portion 32 comprising a second group s2 of flow guiding elements 7', wherein the second group s2 of flow guiding elements 7' are arranged in front of the suction port 5 as seen in the reverse movement direction rd of the nozzle 1'.

[0135] In the following, unless otherwise indicated, reference is made to Figure 1 , Figure 2 , Fig.10 and Fig.11 In more detail, according to the illustrated embodiment, each flow guiding element 7' of the first group s1 of flow guiding elements 7' has a cross section that tapers away from the suction port 5 as seen along a respective first direction d1 from the suction port 5 towards the flow guiding element 7'. Likewise, each flow guiding element 7' of the second group s2 of flow guiding elements 7' has a cross section that tapers away from the suction port 5 as seen along a respective second direction d2 from the suction port 5 towards the flow guiding element 7'.

[0136] According to the embodiment shown, the respective first directions d1 are parallel to the forward movement direction fd of the nozzle 1' and point in the same direction as the forward movement direction. Similarly, according to the embodiment shown, the respective second directions d2 are parallel to the reverse movement direction rd of the nozzle 1' and point in the same direction as the reverse movement direction.

[0137] In other words, according to the illustrated embodiment, each of the plurality of flow guiding elements 7' has a cross section that is tapered away from the suction port 5 as seen along directions d1, d2 from the suction port 5 toward the flow guiding element 7', wherein the directions d1, d2 from the suction port 5 toward the flow guiding element 7' are parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1'. In addition, according to the illustrated embodiment, the suction port 5 and the plurality of flow guiding elements 7' are arranged so that the directions d1, d2 from the suction port 5 toward the corresponding flow guiding element 7' are parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1'.

[0138] exist Figure 2In the figure, the direction d4 entering the nozzle base 3 and the direction d3 exiting from the nozzle base 3 are indicated. According to the embodiment herein, each of the plurality of flow guiding elements 7' is movably arranged between a retracted position and an extracted position in the direction d4 entering the nozzle base 3 and the direction d3 exiting from the nozzle base. Fig.10 and Fig.11 In FIG. 1 , each flow guiding element 7 ′ is shown in the extracted position.

[0139] Fig.12 Shown Fig.10 An enlarged stereoscopic view of the nozzle base 3 of the nozzle 1 ' is shown in FIG. Fig.12 In FIG. 1 , a flow guiding element 7 ′ of a plurality of flow guiding elements 7 ′ is shown in a corresponding withdrawn position. Fig.12 as well as Fig.10 It can be clearly seen in FIG. 1 that the flow guiding element 7 ′ protrudes from the nozzle base 3 when the flow guiding element 7 ′ is in the corresponding extracted position.

[0140] Fig.13 Shown Fig.12 An enlarged perspective view of the nozzle base 3 of FIG. 1 , wherein the flow guiding elements 7 ′ of the plurality of flow guiding elements 7 ′ have been moved to the corresponding retracted positions. Fig.13 As can be clearly seen in the figure, according to the illustrated embodiment, the retracted position constitutes a position in which a flow guiding element 7 ′ of the plurality of flow guiding elements 7 ′ does not protrude from the nozzle base 3 .

[0141] The retracted position may constitute a position in which the flow directing element 7' moves to a position in which a portion 16 of the flow directing element 7' arranged to face the floor surface during operation of the suction nozzle 1' moves to a position inside the nozzle base 3. The retracted position may constitute a position in which the flow directing element 7' moves to a position in which a portion 16 of the flow directing element 7' arranged to face the floor surface during operation of the suction nozzle 1' moves to a position in which a portion 16 of the flow directing element 7' is at least substantially flush with a surface of the nozzle base 3 adjacent to the flow directing element 7'.

[0142] The expression "retracted position" as used herein is intended to encompass the fully retracted position, and the expression "extracted position" is intended to encompass the fully extracted position. However, as explained below, each of the plurality of flow directing elements 7' is movably arranged relative to the nozzle base 3, such that the flow directing element 7' can adopt positions between the retracted position and the extracted position.

[0143] As in Fig.12 and Fig.13As seen in , according to the illustrated embodiment, the nozzle base 3 comprises a plurality of orifices 9, wherein each flow directing element 7' is at least partially movably arranged inside an orifice 9 of the plurality of orifices 9 between a retracted position and an extracted position.

[0144] Fig.14 Shown Fig.10 A first cross-section of a portion of a vacuum cleaner nozzle 1 ′ is shown in FIG. Fig.14 The first cross section is obtained in a plane parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1'. Furthermore, as seen in a direction perpendicular to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1', the first cross section passes through a portion of the suction nozzle base 3 between two adjacent flow guiding elements 7'. Fig.14 In FIG. 3 , the suction nozzle 1 ′ is shown positioned in an upright use position on a floor surface 30 , and the flow guiding element 7 ′ is shown in a corresponding extracted position.

[0145] Fig.15a Shown Fig.10 A second cross section of a portion of a vacuum cleaner nozzle 1 ' is shown in FIG. Fig.14 The first section in Fig.15a The second cross section is obtained in a plane parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1 '. However, the second cross section passes through a portion of the suction nozzle base 3 where the flow guiding element 7' is arranged. In other words, Fig.15a The second cross section of extends through the flow guiding element 7' in a plane parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1'. Fig.15a In FIG. 3 , the suction nozzle 1 ′ is shown positioned in an upright use position on a floor surface 30 and the flow guiding element 7 ′ is shown in an extracted position.

[0146] Fig.15b Shown Fig.15a A second cross section in which the flow directing element 7' has been moved to the retracted position. Figures 10 to 15b In the embodiment shown in the figure, each flow guiding element 7' is pivotally arranged between the retracted position and the extracted position about the pivot axis Pa. According to the embodiment shown, the respective pivot axis Pa is perpendicular to each of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1. According to a further embodiment, the respective pivot axis Pa may be substantially perpendicular to each of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1.

[0147] Furthermore, each flow directing element 7' comprises a first surface 41 and a second surface 42, which each face in a direction towards the floor surface 30 during operation of the suction nozzle 1'. Fig.15aAs can be seen in FIG. 4 , when the flow directing element 7 ′ is in the withdrawn position, the first surface 41 is substantially parallel to the floor surface 30. In addition, as can be seen in FIG. Fig.15b As can be seen in FIG. 4 , when the flow guiding element 7 ′ is in the retracted position, the second surface 42 is substantially parallel to the floor surface 30. Thus, favorable flow characteristics and favorable partial vacuum levels can be provided between the plurality of flow guiding elements 7 ′ and the suction port 5 when the flow guiding element 7 ′ is in the extracted position and when the flow guiding element 7 ′ is in the retracted position.

[0148] In the following, unless otherwise indicated, reference is made to Figure 1 , Figure 2 as well as Figures 10 to 15b . According to an embodiment herein, each flow guiding element 7' is configured to move toward the retracted position when a force is applied to the flow guiding element 7' in a direction d4 of entering the nozzle base 3. Furthermore, according to the illustrated embodiment, each flow guiding element 7' is configured to move toward the withdrawal position at least partially by gravity. According to a further embodiment, one or more flow guiding elements 7' of the plurality of flow guiding elements 7' may be configured to move toward the withdrawal position at least partially by gravity. In addition, one or more flow guiding elements 7' of the plurality of flow guiding elements 7' may be biased toward the withdrawal position by at least one spring element 8. That is, in more detail, Fig.15a and Fig.15b A spring element 8' is schematically illustrated in . Each flow guiding element 7' of the plurality of flow guiding elements 7' of the suction nozzle 1' may comprise a spring element 8' configured to exert a biasing force on the flow guiding element 7' in a direction towards the withdrawal position.

[0149] As an alternative or in addition, refer to Figure 1 , Figure 2 as well as Figures 10 to 15b The explained suction nozzle 1 ' may comprise one or more elongated connecting structures connecting the plurality of flow guiding elements 7' such that the plurality of flow guiding elements 7' may move in unison.

[0150] Since the nozzle base 3 of the nozzle 1' comprises a plurality of flow guiding elements 7', each having a cross section tapering away from the suction port 5 as seen in the directions d1, d2 from the suction port 5 towards the flow guiding element 7', a vacuum cleaner nozzle 1' is provided which creates conditions for favourable flow characteristics towards the suction port 5 while being able to guide particles and objects towards the suction port 5 in an effective manner during use of the nozzle 1'. This is because the tapered cross section of the flow guiding element 7' forms a funnel-shaped opening between two adjacent flow guiding elements 7'.

[0151] Furthermore, since each flow directing element 7' is movably arranged in the direction d4 into the nozzle base 3 and in the direction d3 out of the nozzle base, a nozzle 1' is provided that avoids the need to manually change the setting of the mechanism when moving from a harder type of surface such as a floor surface to a softer type of surface such as a carpet (and vice versa). This is because the abutting contact between the flow directing element 7' and a protruding portion of the surface area to be cleaned (such as the edge of a carpet, etc.), or the abutting contact between the flow directing element 7' and an object or particle can cause the flow directing element 7' to be displaced in the direction d4 into the nozzle base 3. When the abutting contact is released and / or when the abutting force is reduced, the flow directing element 7' can be displaced in the direction d3 out of the nozzle base 3 by gravity and / or by the biasing force of one or more spring elements 8'. As a result, a more user-friendly vacuum cleaner nozzle 1' is provided.

[0152] Furthermore, since each flow guiding element 7' is movably arranged in the direction d4 into the nozzle base 3 and in the direction d3 out of the nozzle base, favorable flow characteristics and favorable partial vacuum levels can also be provided between the plurality of flow guiding elements 7' and the suction port 5 when cleaning softer types of surfaces such as carpets, furniture, etc. This is because the abutting contact between the portions of the softer types of surfaces and the flow guiding element 7' can move the flow guiding element 7' to a position between the retracted position and the extracted position.

[0153] In addition, since the suction nozzle 1' includes a plurality of flow guiding elements 7', each of which has a tapered cross-section and is movably arranged in a direction d4 entering the suction nozzle base 3 and in a direction d3 exiting the suction nozzle base, a vacuum cleaner nozzle 1' is provided that creates conditions for low friction between the suction nozzle 1' and the surface to be cleaned even when cleaning softer types of surfaces such as carpets, furniture, etc.

[0154] Furthermore, due to the plurality of flow guiding elements 7 ′, a suction nozzle 1 ′ is provided which is able to guide particles and objects towards the suction port 5 in an effective manner also when cleaning softer types of surfaces.

[0155] As in Fig.10 and Fig.11 As best seen in FIG. 1 , according to the illustrated embodiment, the flow guiding elements 7' of the second set s2 of flow guiding elements 7' have an identical but mirrored design to the flow guiding elements 7' of the first set s1 . According to further embodiments, the flow guiding elements 7' of the second set s2 of flow guiding elements 7' may have substantially the same but mirrored design to the flow guiding elements 7' of the first set s1 .

[0156] In addition, as in Fig.10 and Fig.11 As best seen in the figure, according to the illustrated embodiment, the flow guiding elements 7' of the first group s1 and the second group s2 comprise the same number of flow guiding elements 7'. According to a further embodiment, the flow guiding elements 7' of the first group s1 and the second group s2 may comprise substantially the same number of flow guiding elements 7'. Due to these features, a vacuum cleaner nozzle 1' is provided having conditions and properties suitable for manufacturing and assembling in a cost-effective manner. Furthermore, a vacuum cleaner nozzle 1' is provided having the same or at least similar operating properties when moving on a surface in a reverse movement direction rd and when moving on a surface in a forward movement direction fd.

[0157] In addition, as in Fig.10 and Fig.11 As best seen in FIG. 1 , according to the illustrated embodiment, the flow guiding elements 7' of each of the first group s1 and the second group s2 include ten flow guiding elements 7'. In other words, according to the illustrated embodiment, the nozzle base 3 of the nozzle 1' includes a total of twenty flow guiding elements 7'. According to further embodiments, the number of flow guiding elements 7' of each of the first group s1 and the second group s2 of flow guiding elements 7' may be an integer in the range of 4 to 26, or an integer in the range of 7 to 15. Furthermore, according to further embodiments, the total number of flow guiding elements 7' of the nozzle base 3 may be an integer in the range of 4 to 52, or an integer in the range of 14 to 30.

[0158] According to the illustrated embodiments, each flow directing element 7' is airtight. According to these embodiments, each flow directing element 7' may be formed of a solid or composite material arranged to not allow air to pass through the flow directing element 7'. Each flow directing element 7' may comprise an elastic material, such as a thermoplastic elastomer, silicone or the like, preferably a portion 16 of the flow directing element 7' configured to face the floor surface 30 during operation of the suction nozzle 1'. As an alternative or in addition, each flow directing element 7' may comprise a polymer material, such as plastic.

[0159] Since, according to the illustrated embodiment, each flow guiding element 7' is airtight, further advantageous flow characteristics can be provided towards the suction port 5 during use of the nozzle 1'. Furthermore, further advantageous partial vacuum levels can also be provided between the plurality of flow guiding elements 7' and the suction port 5 when cleaning softer types of surfaces such as carpets, furniture, etc. Furthermore, a vacuum cleaner nozzle 1' having conditions and characteristics suitable for manufacturing and assembling in a cost-effective manner is provided. Furthermore, a vacuum cleaner nozzle 1' is provided that provides for an improved ability to guide particles and objects towards the suction port 5 in an effective manner.

[0160] Fig.16 Shows reference Figures 10 to 15b An enlarged view of a pair of flow guiding elements 7' of the nozzle base 3 of the vacuum cleaner nozzle 1' is illustrated. Fig.16 The flow directing elements 7 ′ in FIG. 8 are shown arranged in respective orifices 9 . Fig.16 is drawn to scale and the flow directing elements 7' are shown as seen in a direction straight towards the base of the nozzle. Fig.16 In FIG. 1 , a respective pivot axis Pa of the flow guiding element 7 ′ is shown and the flow guiding element 7 ′ is shown in a respective retracted position.

[0161] In the following, unless otherwise indicated, reference is made to Figure 1 , Figure 2 as well as Figures 10 to 16 According to the illustrated embodiment, each flow guiding element 7' comprises a wide section 11. The wide section 11 of each flow guiding element 7' faces the suction port 5. Fig.16 As indicated in , the width w of the wide section 11 is greater than the distance D1 between two adjacent flow guiding elements 7' of the plurality of flow guiding elements 7'. Thus, a suction nozzle 1' is provided which is capable of guiding particles and objects towards the suction port 5 in an effective manner and which creates conditions for favorable flow characteristics towards the suction port 5 during use of the suction nozzle 1'.

[0162] According to the illustrated embodiment, the width w of the wide section 11 is about 94% greater than the distance D1 between two adjacent flow guiding elements 7' of the plurality of flow guiding elements 7'. According to further embodiments, the width w of the wide section 11 may be 5% to 170% greater, or 75% to 120% greater, than the distance D1 between two adjacent flow guiding elements 7' of the plurality of flow guiding elements 7'.

[0163] The width w of the wide section 11 of the flow guiding element 7' and the distance D1 between two adjacent flow guiding elements 7' are measured in a direction perpendicular to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1' and parallel to the floor surface 30, and when the suction nozzle 1' is positioned in an upright use position on the floor surface, the suction nozzle base 3 is configured to face the floor surface.

[0164] According to the illustrated embodiment, the width w of the wide section 11 of each flow guiding element 7' is about 15.5 mm. According to further embodiments, the width w of the wide section 11 of each flow guiding element 7' may be in the range of 6 to 40 mm, or in the range of 10 to 20 mm.

[0165] Furthermore, according to the illustrated embodiment, the distance D1 between two adjacent flow guiding elements 7' in the plurality of flow guiding elements 7' is about 8 mm. According to further embodiments, the distance D1 between two adjacent flow guiding elements 7' in the plurality of flow guiding elements 7' may be in the range of 2 mm to 24 mm, or in the range of 4 mm to 12 mm.

[0166] According to the illustrated embodiment, each of the plurality of flow guiding elements 7' includes a first side surface 13 and a second side surface 15, which are arranged so that a cross section of the flow guiding element 7' is tapered away from the suction port 5 as seen along directions d1, d2 from the suction port 5 toward the flow guiding element 7'. According to the illustrated embodiment, an angle a1, a2 between each of the first side surface 13 and the second side surface 15 and one of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1' is approximately 31 degrees. According to further embodiments, an angle a1, a2 between each of the first side surface 13 and the second side surface 15 and one of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1' may be in the range of 10 to 65 degrees, or may be in the range of 20 to 40 degrees.

[0167] According to the illustrated embodiment, each of the plurality of flow guiding elements 7' comprises a narrow section 17 facing away from the suction port 5. The narrow section 17 comprises an elongated portion 19 having an elongation direction de substantially parallel to the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1'.

[0168] As mentioned, according to these embodiments each flow directing element 7 ′ of the plurality of flow directing elements 7 ′ comprises a first surface 41 which is substantially parallel to the floor surface 30 when the flow directing element 7 ′ is in the extracted position and the suction nozzle 1 is positioned in the upright use position thereon. Fig.15a A first surface 41 is also indicated in FIG.

[0169] The narrow section 17 of the flow directing element 7' comprises a front surface 23 which is angled relative to the first surface 41. In other words, the narrow section 17 comprises a front surface 23 which faces the floor surface 30 at an angle a3, whereas the first surface 41 faces directly towards the floor surface 30 when the flow directing element 7' is in the extracted position and the nozzle 1 is positioned in the upright use position on the floor surface 30. Fig.15a Angle a3 is indicated in . Fig.15aThe angle a3 in the embodiment is about 46 degrees, but may be in the range of 10 to 80 degrees, or in the range of 20 to 70 degrees. The angle a3 may be when the nozzle 1 'is positioned in an upright use position on the floor surface 30 and the flow guiding element 7' is in the withdrawn position (eg Fig.15a ) is measured between the surface normal of the front surface 23 of the narrow section 17 of the flow guiding element 7 ′ and the floor surface 30. Fig.12 The front surface 23 of the narrow section 17 is also indicated in FIG.

[0170] Due to the narrow section 17 and its front surface 23 (which is angled relative to the first surface 41 and faces the floor surface 30 at an angle a3), when the flow directing element 7' abuts against a raised portion of a surface (such as an edge of a carpet, etc.) or against an object or a particle, the plurality of flow directing elements 7' can be moved in a more effective manner in the direction d4 towards the respective retracted position. According to some embodiments, the narrow section 17 and its front surface 23 can include an elastic material such as a thermoplastic elastomer, silicone, etc.

[0171] As in Fig.16 Best seen in Figures 10 to 16 In the embodiment shown in FIG. 1 , as seen in the direction d4 toward the nozzle base 3, the first surface 41 of each flow guiding element 7' has a triangular shape separated from the narrow section 17 of the flow guiding element 7', which narrow section can be said to form a section protruding from a first corner of the triangular shape, wherein the first corner of the triangular shape points in a direction parallel to one of the forward movement direction fd and the reverse movement direction rd of the nozzle 1'. In addition, according to Figures 10 to 16 In the embodiment shown in FIG. 4 , the second surface 42 of each flow guiding element 7 ′ has a regular quadrilateral shape as seen in the direction d4 towards the nozzle base 3 .

[0172] According to the illustrated embodiment, the combined width w2 of the triangular portion and the regular quadrilateral portion of each flow guiding element 7' (measured in a direction parallel to one of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1' when the flow guiding element 7' is in the retracted position) is approximately 11.8 mm. According to further embodiments, the width w2 of the triangular portion of each flow guiding element 7' (measured in a direction parallel to one of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1' when the flow guiding element 7' is in the retracted position) can be in the range of 5 mm to 35 mm, or can be in the range of 8 mm to 16 mm.

[0173] Furthermore, according to the illustrated embodiment, the width w3 of the elongated portion 19 of each flow guiding element 7' (measured in a direction parallel to one of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1' when the flow guiding element 7' is in the retracted position) is about 4 mm. According to further embodiments, the width w3 of the elongated portion 19 of each flow guiding element 7' (measured in a direction parallel to one of the forward movement direction fd and the reverse movement direction rd of the suction nozzle 1' when the flow guiding element 7' is in the retracted position) can be in the range of 1 mm to 14 mm, or can be in the range of 2 mm to 7 mm.

[0174] like Fig.14 As indicated in , according to the illustrated embodiment, the nozzle 1 ' comprises a height adjustment mechanism 29 for changing the relative distance between the floor engaging portion of the wheel 4 and the nozzle base 3. The height adjustment mechanism 29 is operably connected to a height adjustment knob 29'. Figure 1 , Figure 2 and Fig.14 Due to the height adjustment mechanism 29, a more user-friendly vacuum cleaner nozzle 1 ' is provided which allows the user to select whether the plurality of wheels 4 should be in the extracted position or the retracted position and thereby also the distance between the nozzle base 3 and the surface 30 to be cleaned.

[0175] In addition, according to the illustrated embodiment, the flow guiding element 7' is configured to adopt a corresponding retracted position relative to the nozzle base 3 when the relative distance between the floor engaging portion of the wheel 4 and the nozzle base 3 is reduced, that is, when the height adjustment mechanism 29 is controlled so that the plurality of wheels 4 are in a corresponding retracted position relative to the nozzle base 3.

[0176] Hereby, a more user-friendly vacuum cleaner nozzle is provided which allows the user to select whether the plurality of flow directing elements 7 ' should be in respective retracted positions during use of the vacuum cleaner nozzle 1 '.

[0177] Also in reference Figures 10 to 16 In the illustrated embodiment, the nozzle base 3 may comprise a plurality of recesses, each of which is arranged between a flow directing element 7' of the plurality of flow directing elements 7' and the suction port 5. Each such recess may be arranged such that when the flow directing element 7' is in the retracted position, a bounding surface of the recess is substantially flush with a portion 16 of the flow directing element 7' configured to face the floor surface 30 during operation of the suction nozzle 1'.

[0178] Also refer to the following Figures 1 to 16Explanation. The vacuum cleaner nozzle 1, 1' according to the present disclosure may include one or more brush rollers. The one or more brush rollers may each be powered by a motor (such as an electric motor or a pneumatic motor) to rotate. According to such an embodiment, the vacuum cleaner nozzle 1, 1' may include a brush roller between the flow guiding elements 7, 7' of the first group s1 and the suction port 5. As an alternative or in addition, the vacuum cleaner nozzle 1, 1' may include a brush roller between the flow guiding elements 7, 7' of the second group s2 and the suction port 5.

[0179] The phrase "substantially parallel to" as used herein may encompass an angle between the referenced objects being less than 10 degrees, or less than 7 degrees.

[0180] The phrase "substantially perpendicular" as used herein may encompass angles between the referenced objects being in the range of 80 to 100 degrees or in the range of 83 to 97 degrees.

[0181] The expression "substantially flush" as used herein may encompass that the distance between the mentioned objects measured parallel to the direction d4 into the nozzle base 3 and the direction d3 out of the nozzle base is less than 5 mm, or less than 2.5 mm.

[0182] The feature that the flow guiding elements 7, 7' of the first group s1 and the second group s2 comprise substantially the same number of flow guiding elements 7, 7' may encompass the fact that the difference between the number of flow guiding elements 7, 7' of one of the flow guiding elements 7, 7' of the first group s1 and the second group s2 and the number of flow guiding elements of the other group of the flow guiding elements 7, 7' of the first group s1 and the second group s2 is less than two.

[0183] The direction d4 into the nozzle base 3 as mentioned herein may also be referred to as the direction d4 towards the nozzle base 3. Likewise, the direction d3 out of the nozzle base 3 as mentioned herein may also be referred to as the direction d3 away from the nozzle base 3.

[0184] It will be understood that the foregoing is an illustration of various example embodiments and that the present invention is limited only by the appended independent claims. Those skilled in the art will recognize that the example embodiments may be modified without departing from the scope of the present invention as defined by the appended independent claims, and that different features of the example embodiments may be combined to produce embodiments other than those described herein.

[0185] As used herein, the terms "comprising" or "comprises" are open ended and include one or more stated features, elements, steps, components or functions, but do not exclude the presence or addition of one or more other features, elements, steps, components, functions or groups thereof.

Claims

1. A vacuum cleaner nozzle (1, 1') configured to move over a floor surface (30), wherein: The suction nozzle (1, 1') comprises a nozzle base (3) which is configured to face the floor surface (30) during operation of the suction nozzle (1, 1'). The nozzle base (3) comprises a suction port (5) and a plurality of flow guiding elements (7, 7') arranged adjacent to the suction port (5). wherein each flow guiding element (7, 7') of the plurality of flow guiding elements (7, 7') has a cross section that tapers away from the suction port (5) as seen along a direction (d1, d2) from the suction port (5) toward the flow guiding element (7, 7'), And wherein each flow guiding element (7, 7') is arranged movably between a retracted position and an extracted position in a direction (d3, d4) into and out of the nozzle base (3).

2. The suction nozzle (1, 1') according to claim 1, wherein: Each flow guiding element (7, 7') is gas-tight.

3. The suction nozzle (1, 1') according to claim 1 or 2, wherein: Each flow directing element (7, 7') comprises an elastic material, preferably a portion (16) of the flow directing element (7, 7') which is configured to face the floor surface (30) during operation of the suction nozzle (1, 1').

4. A suction nozzle (1, 1') according to any one of the preceding claims, wherein Each flow directing element (7, 7') is configured to move towards the retracted position when a force is applied to the flow directing element (7, 7') in a direction (d4) into the nozzle base (3).

5. The suction nozzle (1, 1') according to any one of the preceding claims, wherein One or more flow directing elements (7, 7') of the plurality of flow directing elements (7, 7') are configured to be moved towards the withdrawal position at least partly by gravity.

6. A suction nozzle (1, 1') according to any one of the preceding claims, wherein One or more flow guiding elements (7, 7') of the plurality of flow guiding elements (7, 7') are biased towards the withdrawn position by at least one spring element (8, 8').

7. A suction nozzle (1, 1') according to any one of the preceding claims, wherein The nozzle base (3) comprises a first base portion (31), which comprises a first group (s1) of flow guiding elements (7, 7'), which are arranged in front of the suction port (5) as seen in the forward movement direction (fd) relative to the nozzle (1, 1').

8. A suction nozzle (1, 1') according to any one of the preceding claims, wherein The nozzle base (3) comprises a second base portion (32), which comprises a second group (s2) of flow guiding elements (7, 7'), which are arranged in front of the suction port (5) as seen in the reverse movement direction (rd) relative to the nozzle (1, 1').

9. The suction nozzle (1, 1') according to claims 7 and 8, wherein: The flow guiding elements (7, 7') of the second group (s2) of flow guiding elements (7, 7') have the same but mirrored design as the flow guiding elements (7, 7') of the first group (s1).

10. The suction nozzle (1, 1') according to any one of the preceding claims, wherein The number of flow guiding elements (7, 7') of the nozzle base (3) is an integer in the range of 4 to 52, or in the range of 14 to 30.

11. The suction nozzle (1, 1') according to any one of the preceding claims, wherein Each flow guiding element (7, 7') comprises a wide section (11) facing the suction port (5), wherein a width (w) of the wide section (11) is greater than a distance (D1) between two adjacent flow guiding elements (7, 7') among the plurality of flow guiding elements (7, 7').

12. The suction nozzle (1, 1') according to any one of the preceding claims, wherein Each flow guiding element (7, 7') includes a first side surface and a second side surface (13, 15), which are arranged so that a cross section of the flow guiding element (7, 7') is tapered away from the suction port (5) as seen along a direction (d1, d2) from the suction port (5) toward the flow guiding element (7, 7'), and wherein an angle (a1, a2) between each of the first side surface and the second side surface (13, 15) and one of the forward movement direction and the reverse movement direction (fd, rd) of the suction nozzle (1, 1') is in the range of 10 degrees to 65 degrees, or in the range of 20 degrees to 40 degrees.

13. The suction nozzle (1, 1') according to any one of the preceding claims, wherein Each flow guiding element (7, 7') comprises a wide section (11) facing the suction port (5) and a narrow section (17) facing away from the suction port (5), wherein the narrow section (17) comprises an elongated portion (19) having an extension direction (de) substantially parallel to the forward movement direction and the reverse movement direction (fd, rd) of the suction nozzle (1, 1').

14. The suction nozzle (1, 1') according to any one of the preceding claims, wherein Each flow guiding element (7, 7') comprises a wide section (11) facing the suction port (5) and a narrow section (17) facing away from the suction port (5), and wherein each flow guiding element (7, 7') comprises a first surface (41) which is substantially parallel to the floor surface (30) at least when the guiding element (7, 7') is in one of the retracted position and the extracted position, and wherein the narrow section (17) comprises a front surface (23) which is angled relative to the first surface (41).

15. The suction nozzle (1, 1') according to any one of the preceding claims, wherein The nozzle base (3) comprises a plurality of orifices (9), and wherein each flow directing element (7, 7') is at least partially arranged inside an orifice (9) of the plurality of orifices (9).

16. A nozzle (1) according to any one of the preceding claims, wherein The nozzle base (3) comprises a plurality of recesses (25), each of which is arranged between a flow guiding element (7) among the plurality of flow guiding elements (7) and the suction port (5).

17. The nozzle (1) according to claim 16, wherein: Each recess (25) of the plurality of recesses (25) is arranged such that, when the flow directing element (7) is in the retracted position, a bounding surface (25') of the recess is substantially flush with a portion (16) of the flow directing element (7) configured to face the floor surface (30) during operation of the suction nozzle (1).

18. The nozzle (1, 1') according to any one of the preceding claims, wherein The suction port (5) and the plurality of flow guiding elements (7, 7') are arranged so that a direction (d1, d2) from the suction port (5) toward the corresponding flow guiding element (7, 7') is parallel to a forward movement direction and a reverse movement direction (fd, rd) of the suction nozzle (1, 1').

19. The nozzle (1, 1') according to any one of the preceding claims, wherein The suction nozzle (1, 1') comprises a plurality of wheels (4), each of which has a rolling direction parallel to a forward moving direction and a reverse moving direction (fd, rd) of the suction nozzle (1, 1').

20. The suction nozzle (1, 1') according to claim 19, wherein: The nozzle (1, 1') comprises a height adjustment mechanism (29) for varying the relative distance between the floor engaging portions of the wheels (4) and the nozzle base (3).

21. The suction nozzle (1, 1') according to claim 20, wherein: The flow guiding elements (7, 7') are configured to adopt respective retracted positions relative to the nozzle base (3) when the relative distance between the floor engaging portions of the wheels (4) and the nozzle base (3) decreases.

22. The nozzle (1) according to any one of the preceding claims, wherein Each flow guiding element (7) is arranged linearly movably between a retracted position and an extracted position in directions (d3, d4) into and out of the nozzle base (3).

23. The nozzle (1) according to claim 22, wherein: When the suction nozzle (1) is positioned in an upright use position on the floor surface (30), each flow guiding element (7) is arranged linearly movably in a direction (d3, d4) substantially perpendicular to the floor surface (30).

24. The suction nozzle (1') according to any one of claims 1 to 21, wherein: Each flow guiding element (7') is pivotally arranged between the retracted position and the extracted position.

25. The suction nozzle (1') according to claim 24, wherein: Each flow directing element (7') comprises a first surface and a second surface (41, 42), each of which faces in a direction towards the floor surface (30) during operation of the suction nozzle (1'), wherein, when the flow directing element (7') is in the extracted position, the first surface (41) is substantially parallel to the floor surface (30), and wherein, when the flow directing element (7') is in the retracted position, the second surface (42) is substantially parallel to the floor surface (30).

26. A vacuum cleaner (20) comprising a vacuum cleaner nozzle (1, 1') according to any one of the preceding claims.

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