DE102019117779B4 - Floor nozzle and vacuum cleaner - Google Patents

Abstract

Floor nozzle, having a housing (1) with an upper housing part (11) and a lower housing part (12), the upper housing part (11) having a cover element (112) which covers at least part of the interior of the housing, and a Has web (111) which is designed as a projection extending from the cover element (112) into the interior of the housing; and a housing insert (2) which is arranged between the upper housing part (11) and the lower housing part (12) and which has a sealing lip (21) which is arranged at least partially adjacent to the web (111) , characterized in that the upper housing part (11) has a viewing window (113) and the sealing lip (21) is arranged circumferentially around the viewing window (113), wherein the web (111) is adjacent to the viewing window (113) in the Housing interior extends.

Description

The invention relates to a floor nozzle and a vacuum cleaner. The tightness of floor nozzles is very important for their efficiency and suction power. Insufficient tightness has a relatively large negative influence on the suction power of a vacuum cleaner.

1 shows a perspective view of a connection piece for a floor nozzle according to a prior art not documented in printed form. The connecting piece 8th has a sealing lip 81 on, which is embossed against a joining direction. The connecting piece 8th with the sealing lip 81 is made of a hard plastic such as polypropylene, which is comparatively relatively soft.

2 shows a cross-sectional view of a floor nozzle according to a prior art that is not documented. The floor nozzle has a housing 10 where the in 1 connection piece shown 8th with the sealing lip 81 is arranged. The connecting piece 8th is thus adjacent to a counterpart 9 arranged that by means of the sealing lip 81 a tightness can be achieved. On the one hand, however, is the sealing lip 81 embossed against one joining direction, and on the other hand there is an angle β between the connecting piece 8th and the counterpart 9 > 135 °. This means that when the connection piece is installed 8th and its counterpart 9 due to misalignment or tolerance fluctuations of the connecting piece to be mounted 8th and / or the counterpart 9 damage to the sealing lip 81 generated. This leads to a poor sealing function, which leads to a deterioration in the suction performance of the floor nozzle.

the DE 10 2015 109 797 A1 discloses a floor nozzle which has an upper housing part, a lower housing part and a housing insert. A sealing element is arranged between the lower housing part and the housing insert. the CA 2 423 450 A1 and US 2006/0101604 A1 disclose a floor nozzle which has an upper housing part, a lower housing part and a housing insert. The upper part of the housing has a web which is designed as a projection extending into the interior of the housing of the floor nozzle. The invention thus poses the problem of providing a floor nozzle and a vacuum cleaner which have a high degree of tightness.

According to the invention, this problem is solved by a floor nozzle with the features of claim 1 and a vacuum cleaner with the features of claim 7. Advantageous refinements and developments of the invention emerge from the following subclaims.

The advantages that can be achieved with the invention are, in addition to a high degree of tightness, that the suction power of the floor nozzle is high. Production and assembly are also inexpensive, since no additional components, additional joining means or longer machine cycles are necessary.

• - ein Gehäuse mit einem Gehäuse-Oberteil und einem Gehäuse-Unterteil, wobei das Gehäuse-Oberteil ein Abdeckelement, das zumindest einen Teil des Gehäuseinneren abdeckt, und einen Steg aufweist, der als ein sich von dem Abdeckelement in das Gehäuseinnere erstreckender Vorsprung ausgebildet ist; und
• - einen Gehäuse-Einsatz, der zwischen dem Gehäuse-Oberteil und dem Gehäuse-Unterteil angeordnet ist und der eine Dichtlippe aufweist, die zumindest teilweise angrenzend zu dem Steg angeordnet ist.

The invention relates to a floor nozzle, having

• - A housing with a housing upper part and a housing lower part, the housing upper part having a cover element which covers at least part of the housing interior, and a web which is designed as a projection extending from the cover element into the housing interior; and
• - A housing insert which is arranged between the upper housing part and the lower housing part and which has a sealing lip which is arranged at least partially adjacent to the web.

This provides an assembly-friendly seal. The seal has a relatively low assembly force and is resistant to damage, whereby a maximum sealing effect can be achieved. The seal is not damaged if the components are misaligned, component burrs or strong tolerance fluctuations during assembly. This provides the floor nozzle with a high suction power.

The cover element of the upper part of the housing covers the interior of the housing in the form of an upper side of the housing, while the lower part of the housing covers the interior of the housing at least partially in the form of an underside of the housing. Position and direction information relate to a working position of the floor nozzle. The housing lower part and the housing insert can preferably be connected by means of a plug connection. The upper housing part, the lower housing part and / or the housing insert can also be connected by means of a screw connection. The floor nozzle preferably has a roller brush. The floor nozzle preferably has an electric suction unit.

The phrase “arranged adjacent” means that the sealing lip is arranged directly on the web, so that there is no gap or no further element between them. That is, the sealing lip is at least partially in contact with the web. This achieves a high level of tightness.

The web is preferably arranged in a ring-shaped circumferential manner along at least part of the cover element, and the sealing lip is arranged in an annular circumferential manner around the web. In the sense of the According to the invention, the term “ring-shaped” does not mean circular, but rather that there are no tapering corners. The sealing lip and the web can have rounded corners. They preferably have four rounded corners.

The sealing lip preferably has rounded corners which have one or more corner radii in the range from 1 to 12 mm. These corner radii are designed in such a way that a continuous sealing line or sealing surface is created between the housing insert and the housing upper part. The sealing lip preferably has four rounded corners, two rounded corners each having a corner radius and the two other rounded corners having a further corner radius. The corner radius of the two rounded corners is preferably in the range from 1 to 5 mm, more preferably 2 to 4 mm, while the further corner radius is preferably in the range from 6 to 12 mm, more preferably 8 to 10 mm.

In a preferred embodiment, the sealing lip has a thickness in the range from 0.2 to 0.9 mm and / or a length in the range from 1.5 to 6 mm, the thickness representing a wall thickness of the sealing lip and the length representing a direction of extent of the Sealing lip is in which it protrudes from the housing insert. Alternatively or additionally preferred is a ratio of the length of the sealing lip to the width of the sealing lip in the range of 2 to 6. The housing insert preferably has a base wall thickness, with a ratio of the width of the sealing lip to the base wall thickness of the housing insert in the range of 0, 2 to 0.5. With these dimensions, a good tightness can still be achieved.

An angle between the sealing lip and the upper part of the housing is preferably in the range from 1 to 45 °. This angle represents an insertion angle. By means of a closed design of the sealing lip without tapering corners with the insertion angle, the two components, housing insert and housing upper part, are centered in the sealing area, which also enables concealed assembly. The assembly costs can also be reduced by the fact that, due to the concealed assembly, good centering and tolerance, fewer rejects are produced and fewer parts or processes are necessary.

In a preferred embodiment, the housing insert is designed as a one-component injection-molded part. As a result, costs and sealing points can still be saved.

The housing insert is preferably formed from a material which has an E-module in the range from 500 to 4,000 N / mm ² , preferably 1,000 to 3,000 N / mm ² , measured according to DIN EN ISO 527 . This ensures good flexibility of the sealing lip with sufficient rigidity of the rest of the component at the same time. The web is preferably designed to be fixed or essentially inelastic. Due to the elastic design of the sealing lip, in particular with its described dimensions such as length and width dimensions, tolerances of the components can also be well compensated for with a good seal at the same time.

According to the invention, the upper part of the housing has a viewing window, and the sealing lip is arranged circumferentially around the viewing window. According to the invention, the web extends into the interior of the housing adjacent to the viewing window.

The invention also relates to a vacuum cleaner which has a floor nozzle according to one or more of the embodiments described above.

The vacuum cleaner is preferably designed as a hand-held vacuum cleaner. The expression "hand-held" means that the vacuum cleaner is operated by hand by the user. The vacuum cleaner is more preferably designed as a stick vacuum cleaner, which is also referred to as a stick vacuum cleaner or stick vacuum cleaner.

The vacuum cleaner is preferably a battery-operated vacuum cleaner. That is, the vacuum cleaner has an accumulator and is designed to be operated by means of the accumulator as a power source.

• 1 eine perspektivische Ansicht eines Anschlussstutzens einer Bodendüse gemäß Stand der Technik;
• 2 eine Querschnittsansicht einer Bodendüse gemäß Stand der Technik;
• 3 eine perspektivische Ansicht auf eine erfindungsgemäße Bodendüse;
• 4 eine perspektivische Teil-Querschnittsansicht der in 3 gezeigten Bodendüse;
• 5 eine weitere perspektivische Teil-Ansicht der in 3 gezeigten Bodendüse;
• 6 eine vergrößerte Teilansicht des Ausschnitts IV der 4 bzw. 5; und
• 7 eine perspektivische Ansicht des in 4 gezeigten Gehäuse-Einsatzes.

An embodiment of the invention is shown purely schematically in the drawings and is described in more detail below. It shows

• 1 a perspective view of a connection piece of a floor nozzle according to the prior art;
• 2 a cross-sectional view of a floor nozzle according to the prior art;
• 3 a perspective view of a floor nozzle according to the invention;
• 4th a perspective partial cross-sectional view of the in 3 floor nozzle shown;
• 5 a further perspective partial view of the in 3 floor nozzle shown;
• 6th an enlarged partial view of section IV of FIG 4th or. 5 ; and
• 7th a perspective view of the in 4th shown housing insert.

1 and 2 are already described above.

3 shows a perspective view of a floor nozzle according to the invention. The floor nozzle has a housing 1 on that via a joint 6th with a connector 4th is connected, which can be connected to a suction pipe (not shown) or the like. A vacuum cleaner (not shown). The case 1 has a housing upper part 11 and a lower housing part 12th on. The upper part of the housing 11 has a cover element 112 on, which covers at least part of the interior of the housing. The cover element 112 has a viewing window 113 through which the inside of the housing is partially visible from the outside. The floor nozzle also has a roller brush 5 on that through the viewing window 113 is visible.

4th FIG. 13 is a partial cross-sectional perspective view of FIG 3 shown floor nozzle. The floor nozzle has a housing insert 2 on the inside of the case 1 between the upper part of the housing 11 and the lower part of the housing 12th is arranged.

5 FIG. 11 shows a further perspective partial view of FIG 3 shown floor nozzle. A portion (not shown) of the housing insert 2 is between two protrusions 121 of the lower part of the housing 12th introduced so that the housing insert 2 and the lower part of the housing 12th are connected by means of a plug connection. The upper part of the housing 11 has the cover element 112 that covers the inside of the housing from above, and a bar 111 on that as a stand out from the cover element 112 is formed in the housing interior extending projection. The case insert 2 has a sealing lip 21 on, which is partially adjacent to the jetty 111 is arranged.

6th shows an enlarged partial view of section IV of FIG 4th or. 5 . The sealing lip 21 is partially adjacent to the jetty 111 arranged. An angle, in particular an insertion angle α is between the sealing lip 21 and the upper part of the housing 11 formed, which is in the range of 1 to 45 °. The sealing lip 21 has a thickness b in the range from 0.2 to 0.9 mm and a length L in the range from 1.5 to 6 mm, the ratio of the length L to the width b being in the range from 2 to 6. The thickness b represents a wall thickness of the sealing lip 21 represents, and the length L represents an extension direction of the sealing lip 21 represent in which they are from the housing insert 2 protrudes. The case insert 2 has a base wall thickness h. A ratio of the width b to the base wall thickness h is in the range from 0.2 to 0.5.

7th FIG. 11 shows a perspective view of the FIG 4th shown housing insert. The case insert 2 points the sealing lip 21 , which are designed in a ring-shaped circumferential manner, whereby ring-shaped means that they have four rounded corners 211 with corner radii R. , r has on. The corner radii R. and r are different.

List of reference symbols

α

angle

β

angle

R, r

Corner radius

1

casing

11

Housing upper part

111

web

112

Cover element

113

Viewing window

12th

Housing lower part

121

head Start

2

Housing insert

21

Sealing lip

211

corner

3

poetry

4th

Connecting element

5

Brush roller

6th

joint

7th

Floor nozzle

8th

Connection piece

81

Sealing lip

9

Counterpart

10

casing

Claims (8)

Floor nozzle, comprising - a housing (1) with an upper housing part (11) and a lower housing part (12), the upper housing part (11) having a cover element (112) which covers at least part of the interior of the housing, and a Has web (111) which is designed as a projection extending from the cover element (112) into the interior of the housing; and - a housing insert (2) which is arranged between the upper housing part (11) and the lower housing part (12) and which has a sealing lip (21) which is arranged at least partially adjacent to the web (111) , characterized in that the upper housing part (11) has a viewing window (113) and the sealing lip (21) is arranged circumferentially around the viewing window (113), wherein the web (111) is adjacent to the viewing window (113) in the Housing interior extends. Floor nozzle after Claim 1 , characterized in that the web (111) is annular along at least part of the cover element (112) is arranged circumferentially, and the sealing lip (21) is arranged annularly circumferentially around the web (111). Floor nozzle after Claim 1 or 2 , characterized in that the sealing lip (21) has rounded corners (211) which have one or more corner radii (R, r) in the range from 1 to 12 mm. Floor nozzle according to one of the preceding claims, characterized in that - the sealing lip (21) has a thickness (b) in the range from 0.2 to 0.9 mm and / or a length (L) in the range from 1.5 to 6, 0 mm, the thickness (d) representing a wall thickness of the sealing lip (21) and the length (L) being a direction of extension of the sealing lip (21) in which it protrudes from the housing insert (2), - a ratio of Length (L) to width (b) is in the range of 2 to 6, - an angle (α) between the sealing lip (21) and the upper housing part (11) is in the range of 1 to 45 °, and / or - the housing insert (2) has a base wall thickness (h), the ratio of the width (b) to the base wall thickness (h) being in the range from 0.2 to 0.5. Floor nozzle according to one of the preceding claims, characterized in that the housing insert (2) is designed as a one-component injection-molded part. Floor nozzle according to one of the preceding claims, characterized in that the housing insert (2) is formed from a material which has an E-module in the range from 500 to 4,000 N / mm ² , preferably 1,000 to 3,000 N / mm ² , measured according to DIN EN ISO 527. Vacuum cleaner, having a floor nozzle according to one of the preceding claims. Vacuum cleaner after Claim 7 , characterized in that it is designed as a hand-held, battery-operated stick vacuum cleaner.

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