WO2009133031A1

WO2009133031A1 - Vacuum cleaner nozzle for a vacuum cleaner

Info

Publication number: WO2009133031A1
Application number: PCT/EP2009/054967
Authority: WO
Inventors: Benedikt Bach; Maria Büttner; Alexander Flegler; Thomas GÖPPNER
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2008-04-29
Filing date: 2009-04-24
Publication date: 2009-11-05
Also published as: DE102008021353A1; EP2280630B1; EP2280630A1; DE102008021353B4; CN102014721A

Abstract

A vacuum cleaner nozzle (1), in particular for use in an advance (R1) and reverse direction (R2), having a nozzle head (2) and a nozzle base (3), in which at least one suction port (4) is implemented, from which dirt catching elements (5) are disposed upstream at least in the advance direction (R1), which are disposed rigidly on the nozzle head (2) and/or the nozzle base (3) and/or are implemented so they can be at least partially countersunk into the nozzle head (2), wherein at least a part of said dirt catching elements (5) have a cross section (Q) tapering away from said suction port (3) in said advance (R1) and/or reverse directions (R2) such that a hollow area (6) acting as a dirt trap is implemented on the side facing toward said suction port (4), wherein openings (7a, 7b) for the passage of dirt particles are provided laterally to each dirt catching element (5). The nozzle (1) according to the invention is equally suitable for receiving coarse and also fine dirt on hard floors or on carpets. In particular, it can be implemented as a floor or cushion nozzle or also as a so-called furniture brush.

Description

Vacuum cleaner nozzle for a vacuum cleaner

description

The invention relates to a vacuum cleaner nozzle, in particular for use in a feed direction R1 and return direction R2, with a nozzle head and a nozzle sole, in which at least one suction mouth is formed, which at least in the feed direction R1 dirt catch elements are upstream.

State of the art

Known dirt-catching elements, in particular made of plastic or natural bristles in the form of strips, are for example arranged rigidly on the nozzle head and / or on the nozzle sole.

It is also known, such dirt trap elements optionally at least partially formed retractable into the nozzle head.

In order to absorb larger dirt particles such as pebbles or "wool mice", etc., however, it is usually necessary to lift the vacuum cleaner nozzle and direct it towards the good to be fired and lower it again, that is to carry out an additional annoying or even strenuous additional movement.

To avoid this, it is already known to provide recesses or openings in the strip-shaped dirt trap row. In this regard, DE 88 14 882 U1 or DE 196 30 241 C2, for example, discloses vacuum cleaner nozzles on a vacuum cleaner which have bristle strips or strips arranged on all sides or in parallel, in which openings are formed or partially cut out parallel to the bottom by approximately half the height are to let such a coarse suction material. A disadvantage of such embodiments of the bristle strips is the occurrence of "pushing ahead" of dirt particles at not recessed areas.The dirt bound at such points is not directly required to the suction mouth and can still only be cleaned via a separate operation. From DE 690 20 639 T2 a vacuum cleaner nozzle is known, which has a plurality of pile threads, which are bundled or tied together at the root portions, which are arranged upright at the front and rear of the suction and provided at the front with recesses. These recesses allow dirt through. Further, according to FIG. 11 of DE 690 20 639 T2, the individual pile threads may be bundled at their root portions and arranged at an angle to the longitudinal direction. The back side of the brush area is designed continuously and without interruptions, thus preventing the passage of dirt during a feed movement. Fig. 21 of DE 690 20 639 T2 shows a vacuum cleaner nozzle, which is circumferentially equipped with bundles of individual pile threads. The accumulated dirt particles are sucked in through the centrally located suction mouth. A disadvantage of this nozzle is that Wollmäuse (small, soft, sometimes furry Wollkü- gelchen) and other smaller dust particles stick in the individual bristle bundles and this dirt does not reach the suction mouth. This dirt can, as with the other vacuum cleaner nozzles, only via an explicit cleaning of the bristles, ie only via an additional separate operation. Dirt particles which were not absorbed by the suction mouth during a feed movement, exit at the existing gaps on the back again from the nozzle.

From DE 198 29 044 C2, a suction mouthpiece for a vacuum cleaner is known, in which a worktop is arranged on the nozzle sole of the suction nozzle, which are formed a plurality of aligned to the ground nubs, wherein adjacent passage openings for the sucked solids are present, and the nubs facing the ground have a smooth surface. A disadvantage of this nozzle is that this embodiment only facilitates an improvement in the reception of fibrous materials, but does not allow for the absorption of coarse dirt.

DE 10 2005 045 575 A1 discloses a one-piece bristle strip for a Staubsaugerbodendüse, with a carrier element and bristles, wherein the carrier element and the bristles are integrally formed and wherein the carrier element consists of a hard component and the bristles of a soft component and in the 2-component - Plastic injection molding are made. The essentially universally tet conical or conical and arranged close to each other in several rows and / or staggered bristles act ultimately as a thread lifter.

task

The invention has for its object to provide a comparison with the prior art improved vacuum cleaner nozzle which feeds smaller as well as larger dirt particles and fibrous materials, especially with simple forward or backward movements of the nozzle largely without additional movements, far safer the suction mouth.

solution

The solution of the object is achieved by the features of claim 1. Advantageous embodiments and further developments, which can be used individually or in combination with each other, are the subject of the dependent claims.

The vacuum cleaner nozzle according to the invention is based on generic vacuum cleaner nozzles in that dirt catching elements on the nozzle head and / or arranged on the nozzle sole rigidly and / or optionally at least partially retractable into the nozzle head, wherein in the feed direction R1 and / or Rückschubrichtung R2 at least a part of the dirt traps from Suction mouth have such a tapered cross-section Q, that on the side facing the suction mouth designed as a dirt catch hollow region is formed, wherein the side of each dirt catch element openings are provided for the passage of dirt particles. This embodiment of the dust catching elements has the advantage that dirt particles easily pass the individual dust catching elements into the interior of the vacuum cleaner nozzle towards the suction mouth in the first feed direction R1 through the aerodynamic shape. Dirt particles, which have not yet reached the suction mouth in the first feed movement R1, are retained in the subsequent return movement R2 in the hollow region acting as a dirt trap and prevented from escaping from the area of the vacuum cleaner nozzle. - A -

Preferably, at least a part of the dirt-catching elements have a wedge-shaped, arrowed, hemispherical, hyperbolic and / or parabolic-shaped cross section. All of these shapes are characterized by a flow resistance coefficient favorable in relation to their arrangement to the suction mouth in a thrust direction R1 or R2 and thus optimally configured for passing the dirt particles past the suction mouth. Depending on the arrangement of the suction mouth, the individual dirt-catching elements of a series may have the same or different shapes.

According to the invention, the openings are preferably realized by spaced apart adjacent dirt catching elements and / or by a recess in dirt catching elements arranged without spacing from one another. The distance between adjacent dirt-catching elements or the recess adjacent dirt-catching elements is particularly chosen so that on the one hand sufficient space is granted, so that even larger dirt particles can flow past the gaps unhindered. On the other hand, the distance between the dirt trapping elements is to be selected so narrow that the air flow of the vacuum cleaner nozzle absorbs the dirt particles supplied to the suction mouth. The distance between adjacent dirt catch elements or the recess adjacent dirt catch elements can be designed differently in a row. Furthermore, it is ensured by such freestanding dirt trap elements that capillary effects between adjacent elements and thus the binding of liquid in the dirt trap elements are largely avoided. This makes the vacuum cleaner nozzle more hygienic to handle.

Depending on the size and configuration of the nozzle, the dirt-catching elements can be aligned in one or more, preferably staggered, rows towards the suction mouth. With an array of multiple staggered rows, the debris on the front row is deflected and moved in the direction of the nozzle center. The subsequent series of dirt trap elements deflects the dirt particles on. The dirt particles are deflected with the support of the upcoming air flow preferably to the nozzle mouth out. Dust particles which are already located after a successful deflection in front of a hollow area, are thus retained in a backward movement R2 of the nozzle in the cavity. The dirt particles are thus conveyed closer and closer to the nozzle mouth, similar to a pilgrim step method. Due to the arrangement of the dust catching elements in staggered rows, closing The airflow from the suction mouth could also be held in the middle of the nozzle, thus enabling effective absorption of the particles via the suction mouth.

Depending on the arrangement or position of the arrangement of the dirt-catching elements on the nozzle, these dirt-catching elements can be arranged wholly or partially substantially perpendicular to the nozzle sole. A vertical arrangement of the dust-collecting elements also has the advantage that, when the nozzle is manufactured, simple device means suffice for manufacture.

Alternatively, the dirt trapping elements can also be at least partially offset and / or arranged at an angle α to the nozzle sole. Dust catching elements which are decoupled or arranged at an angle to the nozzle sole have, by virtue of their greater extent, the advantage of being able to form larger-scale hollow areas acting as a dirt trap. In addition, such dirt catching elements have a lower, yielding rigidity, and this property is advantageous in particular in the cleaning of sensitive and / or uneven surfaces.

The above embodiments of cranked or angularly arranged dirt-catching elements also have the advantage that at least part of the dirt-catching elements can be formed laterally out of the base surface formed by the nozzle head and / or nozzle sole, so that facilitated edge suction is achieved. As a result, a dust receptacle from corners or on walls and baseboards is ensured along without touching the nozzle head with the wall or the furniture in an advantageous manner.

Appropriately, the ends of the dirt trapping elements form a predominantly flat surface, whereby a highly effective dirt trap is formed depending on the stroke and based on the floor surface to be cleaned. By a flat configuration of the ends, in addition to a safe entrainment of the dirt particles in the hollow region, a polishing of the soil surface is advantageously achieved in the return movement.

To achieve different stiffnesses, at least individual dirt-catching elements can have slots and / or recesses. Different stiffnesses of individual dirt catching elements can be most easily achieved with slots or recesses. achieve different sizes. Also, in a simple manner, the rigidity of a dirt trap element (further) can be reduced.

Insofar as the dirt-catching elements consist at least partially of a soft component, this has lower static friction compared to a floor covering to the advantage. Preventive elements made of soft components also advantageously prevent scratching of furniture, as is usually the case when corner suction through the nozzle head is usually observed. Furthermore, dirt-collecting elements formed from soft components advantageously leave no traces of abrasion on the surfaces.

Conveniently, at least a part of the dirt trap elements with the nozzle sole are made in one piece, in particular in a 1K or 2K plastic injection molding process, inexpensive and easy to install. For example, individual dirt-catching elements may be injection-molded onto the nozzle sole in an injection molding process, which increases the ease of assembly on account of the one-piece effect achieved thereby. Optionally, the nozzle sole may be made of a different material than the single or all of the dirt traps. The nozzle sole then consists, for example, of a hard component and the dirt-catching elements at least partially of a soft component. The choice of materials with different degrees of hardness for different areas of the nozzle allows a versatile integration of functionalities in a nozzle. For example, areas of the nozzle sole may be made of PP, PP-GF or the like. The individual elements, however, can be made of TPE, PVC, silicone, elastomer or the like, for example. In this way, the stability-determining regions of the carrier part can be defined with regard to their strength-determining function; at the same time, the individual dirt-catching elements can be sufficiently flexible. In addition, this eliminates in this way after the manufacture of the nozzle sole with the dirt trapping elements further assembly steps, such as the attachment of further stiffening elements, which allows cost savings. Furthermore, can be dispensed with additional assembly steps. Also, the integrity due to the lack of bonding materials, such as adhesives, adds to the higher reliability of the bristle molding.

Alternatively or cumulatively, to achieve various fiber absorption properties, at least a portion of the dirt trapping elements may be made of individual plastics and / or natural hair bristles exist. With different materials can be in a simple manner different, esp. Antistatic properties and / or functionalities such as fold-away areas, combine, and represent effective color designs.

The present invention likewise provides a nozzle, in particular for floor care devices, which is suitable for coarse as well as fine dirt, on hard floors, as well as on carpets. It is equally suitable as a floor or upholstery nozzle or so-called furniture brush.

embodiment

Further advantages and embodiments are described below with reference to embodiments illustrated in the drawings, to which the present invention is not limited, however, described in more detail.

They show schematically:

1a shows a first embodiment of a floor nozzle with held on a serrated strip hair bristles in a side view;

Fig. 1 b, the floor nozzle of Figure 1 a in a front view.

FIG. 1c shows the floor nozzle according to FIG. 1a in a bottom view; FIG.

FIG. 1d the floor nozzle according to FIG. 1a in a perspective top view; FIG.

1e the floor nozzle according to FIG. 1a in a perspective bottom view;

2a shows by way of example alternative embodiments of dirt catching elements in a bottom view;

FIG. 2b shows the alternative dirt catching elements according to FIG. 2a in a perspective bottom view; FIG. 3a shows a second embodiment of a floor nozzle with held on a nozzle sole plastic bristles in a perspective bottom view.

FIG. 3b shows the floor nozzle according to FIG. 3a in an enlarged detail in a bottom view; FIG.

4a shows a third embodiment of a floor or upholstery nozzle with laterally projecting dirt catching elements in a plan view.

FIG. 4b shows the floor or upholstery nozzle according to FIG. 4a in a side view; FIG.

FIG. 4c shows the bottom or upholstery nozzle according to FIG. 4a in a perspective bottom view; FIG.

FIG. 5 shows by way of example further alternative embodiments of dirt catching elements in a perspective front view; FIG.

Fig. 6a formed as a furniture brush vacuum cleaner nozzle in a side view;

FIG. 6b shows the furniture brush according to FIG. 6a in a front view; FIG.

FIG. 6c shows the furniture brush according to FIG. 6a in a perspective front view; FIG.

7a shows a second embodiment of a upholstery nozzle in a bottom view;

FIG. 7b shows the upholstery nozzle according to FIG. 7a in a perspective bottom view; FIG.

Fig. 8 shows a third embodiment of a cushioning nozzle; and

Fig. 9 shows a fourth embodiment of a cushioning nozzle.

In the following description of the preferred embodiments of the present invention, like reference characters designate like or similar components. 1a to 1e show a first embodiment of a floor nozzle 1 with eg on a serrated bar (not shown) content Erten, formed for example of hair bristles, dirt catching elements 5 in different views. The execution on a bar advantageously allows the possibility of embodying the dirt-catching elements 5 esp. On carpet hochflori-, fold away. Irrespective of a realized or missing foldability have in the feed direction R1 and / or Rückschubrichtung R2 at least a portion of the dirt trap elements 5 away from the suction mouth 4 a tapering cross-section Q on that on the suction mouth 4 side facing acting as a dirt trap hollow portion 6 is formed. On the side, preferably at the level of the maximum cross-sectional width Qmax, of each dirt catching element 5, openings 7b realized as recesses for the passage of dirt particles are provided in particular. During use of the nozzle 1 so depending on the direction of thrust dirt particles are either supplied directly to the suction mouth 4 or prevented in acting as a dirt trap hollow portion 6 at the abeam exit from the nozzle 1.

FIGS. 2 a and 2 b show, by way of example, alternative embodiments of dirt catching elements 5 in a frontal or perspective bottom view. Clearly recognizable, dust catching elements 5 can have a wedge 5a, arrow 5c, hemispherical 5d, hyperbolic 5b and / or parabolic 5e cross section. Further free forms are conceivable, as far as they also act as dust catching elements in the sense of the invention.

3a and 3b show a second embodiment of a floor nozzle 1 with held on a nozzle base 3 dirt trap elements 5 in different, esp. Enlarged, views. Unlike in FIG. 1, the openings 7a are now realized by adjacent dirt catch elements 5 arranged at a distance 7a. The individual dirt catching elements 5 may have the same or different geometry. In FIG. 3, the dirt-catching element 5b from FIG. 2, which is made of plastic for example, is clearly recognizable. A plurality of such dirt-catching elements 5, preferably designed as plastic bristles 5b, are aligned with the suction mouth 4 in a plurality of staggered rows. With an array of multiple staggered rows, the debris on the front row is deflected and moved in the direction of the center of the nozzle 1. The subsequent series of dirt trap elements 5 deflects the dirt particles on. The dirt particles are removed with Supporting the upcoming air flow preferably deflected towards the nozzle mouth 4 out. Dust particles which are already located after a successful deflection in front of a hollow region 6 are thus retained in the cavity 6 during a return movement R2 of the nozzle 1. The dirt particles are thus conveyed closer and closer to the nozzle mouth 4, similar to a pilgrim step method. By arranging the dirt catching elements 5 in staggered rows, finally, the air flow from the suction mouth

4 held in the middle of the nozzle 1 and thus allows an effective absorption of the particles via the suction mouth 4. The process described above is illustrated in Fig. 3b again by arrows.

4a to 4b show a third embodiment of a floor or a first example of a upholstery nozzle 1 with laterally projecting dirt catch elements 5 in different views. It can be clearly seen how at least part of the dirt traps

5 cranked (in Fig. 4b shown on the left in the image) formed and / or at an angle α to the nozzle sole 3 (in Fig. 4b right shown in the picture) are arranged. As a result, a nozzle 1 can be realized in which, in particular, the dirt-catching elements 5 of the outer rows project laterally from the base surface formed by the nozzle head 2 and / or nozzle sole 3, which is illustrated in detail in FIG. 4a. With protruding dirt-catching elements 5, dust removal from corners or along walls and baseboards is advantageously ensured, without touching the nozzle head 2 with the wall or the furniture. Finally, FIG. 4b shows how expediently the ends 8 of the dirt trapping elements 5 form a predominantly flat surface, as a result of which stroke-dependent and with respect to the floor surface to be cleaned an extremely effective dirt trap is formed.

FIG. 5 shows by way of example further alternative embodiments of dirt catching elements 5 in a perspective front view. It is clearly recognizable how at least individual elements 5 recesses 9a or slots 9b, which allow the advantageous embodiment of dirt trap elements 5 different stiffness without giving up their dirt trap function.

The dirt catching elements 5 shown in previous figures can be made of hair, synthetic hair or plastic injection elements. They can be held separately or molded on the nozzle head 2 or the bottom plate 3. They can be the same Plastics as said housing parts or made of different plastics, esp. With a 2K injection molding, be made. In this case, in particular made of soft components and / or supernatant elements 5 spare the surfaces to be cleaned or adjacent.

The present invention thus provides a nozzle 1 in particular for floor care equipment, which is suitable for coarse as well as fine dirt, on hard floors, as well as on carpets. It is equally suitable as a floor or upholstery nozzle or so-called furniture brush.

6a to 6c show a trained as a furniture brush vacuum cleaner nozzle 1 in different views. In the furniture brush designed especially for cleaning furniture, the dirt catching elements 5 are preferably arranged in a star shape around the suction mouth 4. This ensures that in any direction in which the furniture brush is performed, the dust and dirt particles in a simple and reliable manner the suction port 4 is supplied. In contrast to a floor or upholstery nozzle, the furniture brush does not require any special running or supporting elements.

FIGS. 7a and 7b show a second exemplary embodiment of a upholstery nozzle 1 in a frontal or perspective bottom view. It can clearly be seen how, in particular, the laterally arranged dirt-catching elements 5 can also have different leg lengths. In particular, in the case of rather small-sized nozzles 1 such as a upholstery nozzle, dirt-collecting regions 6 can also be formed laterally, without the need for specially arranged elements 5.

In contrast, FIGS. 8 and 9 nevertheless show exemplary embodiments of a cushioning nozzle 1 with laterally arranged dirt-catching elements 5, which not least facilitate a lateral displacement of the nozzle 1 on a cushion. Unlike floor nozzles (see Figures 1 and 3), which serve to clean large areas, upholstery nozzles serve to clean and clean mostly small and soft surfaces that are raised off the floor, such as seat cushions or sofas. The dirt-catching elements 5 are preferably made shorter with respect to a floor nozzle 1. As a result, an improved fiber absorption, as well as an alignment of the fabric fiber is achieved. Based on the teachings of the invention a dirt catch element 5 is understood that the other education and training shown can always be used individually or in combination with each other, even if they should be described in the context of only a particular type of nozzle 1 and / or with other features. In particular, the strip-shaped configuration shown in, for example, FIG. 1 can be realized combined with the multiple-row arrangement of dirt-catching elements 5 shown in, for example, FIG. 3 also within a nozzle 1.

The nozzle 1 according to the invention is equally suitable for receiving coarse as well as fine dirt on hard floors or on carpets. It can be realized in particular as a floor or upholstery nozzle or as a so-called furniture brush.

LIST OF REFERENCE NUMBERS

1 vacuum cleaner nozzle

2 nozzle head

3 nozzle sole

4 suction mouth

5 dirt trap elements

5a wedge-shaped dirt catch element

5b hyperbolic dirt catch element

5c arrow-shaped dirt catch element

5d hemispherical dirt catch element

5e parabola-shaped dirt catching element

6 acting as a dirt trap hollow area

7a opening realized by distance

7b opening realized by recess

8 end of a dirt trap element. 5

9a slots

9b recess

R1 feed direction

R2 reverse direction

O Ouerschnitt a dirt catch element 5

O _max maximum Ouerschnittsbreite a dirt trap element 5

Claims

claims

1. Vacuum cleaner nozzle (1), in particular for use in a forward (R1) and backward direction (R2), with a nozzle head (2) and a nozzle sole (3), in which at least one suction mouth (4) is formed, which at least in Feed direction (R1) are arranged upstream of dirt catching elements (5) which are arranged rigidly on the nozzle head and / or on the nozzle sole (3) and / or optionally at least partially retractable into the nozzle head (2), wherein in the forward (R1) and / or retraction direction (R2) at least some of the dirt trapping elements (5) have a cross-section (Q) tapering away from the suction mouth (3) in such a way that a hollow region (6) acts as a dirt trap on the side facing the suction mouth (4). is formed, wherein the side of each dirt trap element (5) openings (7a, 7b) are provided for the passage of dirt particles.

2. Vacuum cleaner nozzle (1) according to claim 1, characterized in that at least a part of the dirt trapping elements (5) a wedge (5 a), arrow (5 c), hemisphere (5 d), hyperbolic (5 b) and / or parabola -shaped (5e) have cross-section.

3. Vacuum cleaner nozzle (1) according to claim 1 or 2, characterized in that the openings (7a, 7b) arranged at a distance (7a) adjacent dirt catching elements (5) and / or by recess (7b) in spaced without dirt collecting elements ( 5) are realized.

4. Straubsaugerdüse (1) according to any one of the preceding claims, characterized in that the dirt-catching elements (5) in one or more, preferably staggered, rows are aligned with the suction mouth (4).

5. Vacuum cleaner nozzle (1) according to one of the preceding claims 1 to 4, characterized in that at least part of the dirt-catching elements (5) are arranged substantially perpendicular to the nozzle sole (3).

6. Vacuum cleaner nozzle (1) according to one of the preceding claims 1 to 4, characterized in that at least a part of the dirt-catching elements (5) formed cranked and / or at an angle α to the nozzle sole (3) are arranged.

7. Staubsaugerdüse (1) according to claim 6, characterized in that at least a part of the dirt catching elements (5) laterally from the nozzle head (2) and / or

Project nozzle base (3) formed base.

8. Vacuum cleaner nozzle (1) according to one of the preceding claims, characterized in that the ends (8) of the dirt-catching elements (5) form a predominantly flat surface.

9. Vacuum cleaner nozzle (1) according to one of the preceding claims, characterized in that at least individual dirt-catching elements (5) have slots (9a) and / or recesses (9b).

10. Vacuum cleaner nozzle (1) according to one of the preceding claims, characterized in that the dirt-catching elements (5) at least partially consist of a soft component.

11. A vacuum cleaner nozzle (1) according to any one of the preceding claims, characterized in that at least a part of the dirt trapping elements (5) with the nozzle sole (2) are made in one piece, in particular in a 1 K or 2K plastic injection molding.

12. Vacuum cleaner nozzle (1) according to any one of the preceding claims, characterized in that, at least part of the dirt-catching elements (5) consist of individual plastic and / or natural hair bristles.

13. Vacuum cleaner nozzle (1) according to one of the preceding claims 1 to 12, characterized in that the nozzle (1) is designed as a floor nozzle.

14. Vacuum cleaner nozzle (1) according to one of the preceding claims 1 to 12, characterized in that the nozzle (1) is designed as a padded nozzle.

15. Vacuum cleaner nozzle (1) according to one of the preceding claims 1 to 12, characterized in that the nozzle (1) is designed as a furniture brush.