DE102007057170A1 - Vacuum cleaner-filter bag, has seal with radial inner section that exhibits acute-angled cross-section and strength that is smaller than that of flange, where section is arranged both on upper and lower sides of flange - Google Patents

Abstract

The bag has a plastic flange (1) for connection of the bag with sucking nozzles of a vacuum cleaner. The flange has an opening (3) with an edge at which a seal (4) is provided to seal a connection between the flange and the nozzles. The seal lies completely in a plane of the flange in a condition, and a part of the seal lies at outside of the supports in another condition. A radial inner section of the seal exhibits an acute-angled cross-section and strength that is smaller than that of the flange. The section is arranged both on upper and lower sides of the flange that is made of elastomer.

Description

The The invention relates to a vacuum cleaner filter bag having a plastic flange for connection to the connecting piece of a vacuum cleaner has, and such a plastic flange.

Vacuum cleaner filter bag are for connection to the vacuum cleaner usually with a Cardboard or plastic flange equipped. The flange points an annular receiving opening through which the connecting piece of the vacuum cleaner is pushed, so that the connecting piece into the vacuum cleaner filter bag protrudes. To seal the connection between the flange and the suction nozzle of the vacuum cleaner is usually a Seal provided, extending radially around the receiving opening extends.

Out DE 10 2005 041 811 A1 For example, a plastic flange with a circular seal opening is known, which is formed by a radially inner edge of a seal. The edge fits in a circle to the passage opening of a holding plate. The seal may be formed as a sealing lip and optionally conical. Consequently, the passage opening facing the end of the seal extends in a direction perpendicular to the holding plate. Such a formation of the seal should facilitate the connection of the plastic flange with the suction nozzle of the vacuum cleaner.

However, such a formation of the seal requires the provision of a suitable mold. Moreover, according to DE 10 2005 041 811 A1 Seal and plastic flange are integrally formed, which requires the selection of plastic materials that are processable by injection molding techniques, but at the same time ensure adequate sealing. As a result, sees DE 10 2005 041 811 A1 also an optimization in which the flange and gasket are made of different materials, being provided as a material for the seal elastomer, TPE and silicone.

Another plastic flange, which has a one-piece molded seal is made DE 295 20 610 U1 known. The opening provided there has a plurality of radially extending slots to ensure proper concern of the holding plate on the suction nozzle of the vacuum cleaner.

Of the increasing use of vacuum cleaners with higher suction power, For example, 1200 W or more, but requires an improved Sealing between suction nozzle and retaining plate. moreover the requirements with regard to environmental and hygiene requirements increase, so that the closest possible connection between the filter bag on the one hand and the suction on the other hand desirable is.

task The invention is to the disadvantages of the prior art remove. In particular, a vacuum cleaner filter bag, the one plastic flange for connection to the connecting piece having a vacuum cleaner, and such a plastic flange be specified, which provides a closer connection between the filter bag On the one hand and ensure the suction on the other.

These The object is achieved by the features of claims 1 and 12 solved. Advantageous embodiments of Inventions result from the features of the claims 2 to 11 and 13 to 17.

• – der Kunststoff-Flansch eine Aufnahmeöffnung aufweist, durch die der Stutzen des Staubsaugers geführt wird, und an den Rand der Aufnahmeöffnung eine Dichtung zum Abdichten der Verbindung zwischen dem Kunststoff-Flansch und dem Stutzen angrenzt, die ein- oder zweistückig mit dem Kunststoff-Flansch ausgebildet ist;
• – in einem ersten Zustand die Dichtung vollständig in der Ebene des Kunststoff-Flansches liegt und in einem zweiten Zustand zumindest ein Teil der Dichtung an der Außenseite des Stutzens anliegt; und
• – der radial innere Abschnitt der Dichtung einen spitzwinkeligen Querschnitt aufweist, wobei der radial äußere Abschnitt der Dichtung eine Stärke aufweist, die geringer als die Stärke des Kunststoff-Flansches ist, und der radial äußere Abschnitt sowohl von der Oberseite als auch der Unterseite des Kunststoff-Flansches versetzt angeordnet ist.

According to the invention, a vacuum cleaner bag is provided with a plastic flange for connecting the vacuum cleaner bag to the nozzle and / or housing of a vacuum cleaner, wherein

• - The plastic flange has a receiving opening through which the nozzle of the vacuum cleaner is guided, and adjacent to the edge of the receiving opening a seal for sealing the connection between the plastic flange and the nozzle, the one or two pieces with the plastic flange is trained;
• - In a first state, the seal is completely in the plane of the plastic flange and in a second state at least a part of the seal bears against the outside of the nozzle; and
• The radially inner portion of the seal has an acute-angled cross-section, the radially outer portion of the seal having a thickness which is less than the thickness of the plastic flange, and the radially outer portion of both the top and the bottom of the plastic Flange is offset.

The Seal for sealing the connection between the plastic flange and the neck is preferably integral with the plastic flange educated.

• – der Kunststoff-Flansch eine Aufnahmeöffnung aufweist, durch die der Stutzen des Staubsaugers geführt wird, und an den Rand der Aufnahmeöffnung eine Dichtung zum Abdichten der Verbindung zwischen dem Kunststoff-Flansch und dem Stutzen angrenzt, die ein- oder zweistückig mit dem Kunststoff-Flansch ausgebildet ist;
• – in einem ersten Zustand die Dichtung vollständig in der Ebene des Kunststoff-Flansches liegt und in einem zweiten Zustand zumindest ein Teil der Dichtung an der Außenseite des Stutzens anliegt; und
• – der radial innere Abschnitt der Dichtung einen spitzwinkeligen Querschnitt aufweist, wobei der radial äußere Abschnitt der Dichtung eine Stärke aufweist, die geringer als die Stärke des Kunststoff-Flansches ist, und der radial äußere Anschnitt sowohl von der Oberseite als auch der Unterseite des Kunststoff-Flansches versetzt angeordnet ist.

Furthermore, a plastic flange is provided for a vacuum cleaner bag, in which

• - The plastic flange has a receiving opening through which the nozzle of the vacuum cleaner is guided, and adjacent to the edge of the receiving opening a seal for sealing the connection between the plastic flange and the nozzle, the one or two pieces with the plastic flange is trained;
• - In a first state, the seal is completely in the plane of the plastic flange and in a second state at least a part of the seal bears against the outside of the nozzle; and
• The radially inner portion of the seal has an acute-angled cross-section, the radially outer portion of the seal having a thickness which is less than the thickness of the plastic flange, and the radially outer portion of both the top and the bottom of the plastic Flange is offset.

The Seal for sealing the connection between the plastic flange and the neck is preferably integral with the plastic flange educated.

Of the Plastic flange can be placed on the top of a wall of the vacuum cleaner filter bag glued on, welded on or there by means of another be attached to the skilled person known method.

Of the plastic flange of the invention provides the Advantage of a denser compared to the prior art connection between the filter bag on the one hand and the suction nozzle of a vacuum cleaner on the other hand. The acute-angled cross-section of the radially inner Section of the seal allows for better guidance of the neck through the opening in the bag and ensures for a better concern of at least part of the gasket on the outside of the neck. Because the seal is not conical Has molding and thus neither on the top still protrudes beyond the bottom of the plastic flange, is the production of the plastic flange according to the invention simplified, without the tightness of the closure is endangered.

The maximum strength of the radially inner portion, d. H. the Base of the acute angle of the acute-angled cross-section is the same the strength of the inside section.

The one or two-piece molding of the seal on the plastic flange allows its production in one operation, for example by means of an injection molding process.

The Inlet opening is preferably circular, so that the seal is annular.

Preferably the extent of the seal in the first state is at least 0.25 to 0.4 times the length of the receiving opening. If the receiving opening is circular, then thus the expansion of the seal from the edge of the receiving opening in the direction of the axis of the receiving opening the 0.25 to 0.4 times the diameter of the receiving opening.

On This way it is ensured that the seal in sufficient length rests against the neck.

In In a preferred embodiment, the seal is radial in the plane of the plastic flange running incisions. The incisions create first and second segments that differ can be formed.

For example may be the radially inner portions of the first segments have an acute-angled cross section, wherein the acute angle larger than the acute-angled cross-section of radially outer portions of the second segments is. Alternatively, the first segments may be larger Expansion in the plane of the plastic flange than the second Have segments or vice versa.

Independently of whether radial cuts are provided, the aspect ratio should the radially outer portion of the seal to radially inner portion of the seal with respect to the expansion in the plane of the plastic flange 1: 2 to 1:10 amount.

In In another embodiment, the seal is radial in the plane of the plastic flange extending rib-like reinforcements on. These reinforcements can be additional or alternatively provided to the radially extending incisions be. The reinforcements preferably have a circular Cross-section. The thickness of the reinforcements is larger as the thickness of the segments of the seals between two reinforcements. This duckfoot-like configuration of the seal allows a particularly secure sealing of the opening between the holding plate and intake manifold of the Staubsau gers, since the segments due to their smaller thickness resiliently act as a valve rubber.

Preferably the reinforcements are on regularly the seal distributed so that the segments between adjacent Reinforcements have the same size.

• a) Doppel-Dichtungslippe: Bei der Doppel-Dichtungslippe weist die Dichtung auf der ihrer Achse zugewandten Seite einen konzentrisch umlaufenden Einschnitt auf. Der konzentrisch umlaufende Einschnitt kann sich über die gesamte Länge des radial inneren Abschnittes in radialer Richtung erstrecken. Er kann sich alternativ über die gesamte Länge der Dichtung in radialer Richtung, d. h. über den radial inneren Abschnitt und den radial äußeren Abschnitt, erstrecken.

The seal or the segments may have the following cross sections in the radial direction, for example:

• a) Double sealing lip: For the double sealing lip, the seal has a concentric circumferential notch on the side facing its axis. The concentric circumferential recess may extend over the entire length of the radially inner portion in the radial direction. He can alternatively over the entire Length of the seal in the radial direction, ie over the radially inner portion and the radially outer portion extend.

through of concentric circumferential incision become the radially inner Section of the seal or the radially inner and the radially outer Section of the seal in the axial direction, relative to the seal, divided into two parts, so that two sealing lips arise.

The Both sealing lips can be designed so that they each have an acute-angled cross-section in the radial direction, which tapers towards the axis of the seal opening, so that the tip of the sealing lips the center of the seal opening is facing. In one embodiment run thereby the top of the upper sealing lip and the bottom of the lower Seal lip parallel to each other. The concentric nick can have an acute-angled cross-section in the radial direction, from the edge of the receiving opening to the axis of the seal opening increases.

• b) Dreifach-Dichtungslippe: Bei der Dreifach-Dichtungslippe weist die Dichtung auf der ihrer Achse zugewandten Seite zwei konzentrisch umlaufende Einschnitte auf, die in axialer Richtung voneinander beabstandet sind. Die konzentrisch umlaufenden Einschnitte können sich in radialer Richtung über die gesamte Länge des radial inneren Abschnittes erstrecken. Sie können sich alternativ über die gesamte Länge der Dichtung in radialer Richtung, d. h. des radial inneren Abschnittes und des radial äußeren Abschnittes, erstrecken.

Alternatively, the concentric circumferential recess may have a rectangular cross-section. In this case, the two sealing lips preferably also have a rectangular cross-section. The sealing lips may be rounded on their side facing the axis of the seal opening.

• b) Triple sealing lip: In the case of the triple sealing lip, the seal has, on the side facing its axis, two concentrically encircling notches which are spaced apart in the axial direction. The concentric circumferential cuts may extend in the radial direction over the entire length of the radially inner portion. Alternatively, they may extend over the entire length of the seal in the radial direction, ie, the radially inner portion and the radially outer portion.

through of the two concentric circumferential cuts are the radial inner portion of the segment or the radially inner and the radially outer Section of the segment divided into three parts, so that three Seal lips arise.

The three sealing lips can be designed so that they each have an acute-angled cross-section in the radial direction, wherein they taper towards the axis of the seal opening, so that the tip of the sealing lips of the axis of the seal opening is facing. In one embodiment run thereby the top of the upper sealing lip and the bottom of the lower Seal lip parallel to each other. The concentric revolving Incisions can be acute-angled in the radial direction Have cross-section, with the from the edge of the receiving opening increases toward the axis of the seal opening.

• c) Ballon-Dichtung: Bei der Ballondichtung weist die Dichtung einen konzentrisch umlaufenden Hohlraum auf. Der Querschnitt dieses Hohlraums ist bevorzugt rechteckig. Er kann jedoch in Richtung des Mittelpunktes der Öffnung abgerundet sein. Vorzugsweise verlaufen die Oberseite und die Unterseite der Dichtung parallel zueinander und zur Oberseite und Unterseite der Halteplatte.
• d) Offene Dichtlippe: In einer weiteren Ausführungsform endet der radial innere Abschnitt in einer hakenförmigen Auskragung.

Alternatively, the concentric cuts in the radial direction may have a rectangular cross-section. In this case, the three sealing lips preferably also have a rectangular cross-section. The sealing lips may be rounded on their side facing the axis of the seal opening.

• c) Balloon Seal: In the balloon seal, the seal has a concentric circumferential cavity. The cross section of this cavity is preferably rectangular. However, it may be rounded towards the center of the opening. Preferably, the top and bottom of the seal are parallel to each other and to the top and bottom of the support plate.
• d) Open Sealing Lip: In a further embodiment, the radially inner portion ends in a hook-shaped projection.

Of the Plastic flange is preferably dustproof on a wall the vacuum cleaner bag glued or welded.

Of the Vacuum cleaner bag can be a closure element for closing have the inlet opening of the plastic flange. For example, on two opposite Outside edges of the plastic flange guides be provided for the United circuit element, the within the guides can be moved so that the Inlet opening in the plastic flange either exposed or is closed. Alternatively, on an outer edge of the Plastic flange to be hinged to a lid which opens onto the opening can be folded and there in a corresponding locking element snaps into place or is fixed under the seal.

The Seal can be one or two pieces with the plastic flange be educated. The plastic flange and / or the seal are preferably of an elastomer, more preferably of one thermoplastic elastomer produced. The plastic flange is preferably produced by means of an injection molding process. Preferably, the entire plastic flange, including the seal, made of the same material.

The vacuum cleaner bag may have a closure element for closing the inlet opening of the plastic flange. For example, may be provided on two opposite outer edges of the plastic flange guides for the closure element, which can be moved within the guides so that the inlet opening in the plastic flange is either exposed or is closed. Alternatively it can be hinged to an outer edge of the plastic flange, a lid which can be folded onto the opening and there engages in a corresponding locking element or can be fixed under the seal.

In According to one embodiment, the seal is arranged so that it without insertion of the nozzle on the device housing (Dust passage) seals, d. H. between flange and Staubsaugerge housing. In this embodiment, the closes the Seal the inlet completely when the socket is not inserted into the inlet opening is.

The Invention will be described below by means of embodiments explained in more detail with reference to the drawings. Show

1 a plan view of a first embodiment of a plastic flange according to the invention;

2 a cross section along the section line AA of in 1 shown first embodiment;

3 a plan view of a second embodiment of a plastic flange according to the invention;

4 a cross section along the section line BB of in 3 shown first embodiment;

5 a plan view of a third embodiment of a plastic flange according to the invention;

6 an alternative cross section along the section line CC in the 1 . 3 and 5 shown embodiments, in which the seal is formed as a double-sealing lip;

7 an alternative cross section along the section line CC in the 1 . 3 and 5 shown embodiments, in which the seal is formed as another double-sealing lip;

8th an alternative cross section along the section line CC in the 1 . 3 and 5 shown embodiments in which the seal is designed as still another double sealing lip;

9 an alternative cross section along the section line CC in the 1 . 3 and 5 shown embodiments, in which the seal is designed as a triple sealing lip;

10 an alternative cross section along the section line CC in the 1 . 3 and 5 shown embodiments, in which the seal is designed as a balloon seal; and

11 an alternative cross section along the section line CC in the 1 . 3 and 5 shown embodiments, in which the seal has a projection.

To 1 consists of the plastic flange 1 from a substantially square plate 2 , where the plate 2 may also have any other outer contour, for example, it may be circular, rectangular or triangular. The plate 2 has a circular receiving opening 3 through which a part of the nozzle is to be introduced into the vacuum cleaner filter bag. To seal the connection between the nozzle and the plate 2 is an annular seal 4 to the plate 2 formed. The seal 4 encloses a seal opening 5 , through which the nozzle of the vacuum cleaner is first introduced. This is the seal 4 pressed into the interior of the vacuum cleaner bag and finally abuts against the outer wall of the nozzle.

The seal 4 in one piece to the plate 2 is formed, has a lower thickness than the plate 2 on. She is so in the opening 3 designed to be both to the top 8th the plate 2 as well as to the bottom 9 the plate 2 is arranged offset. Preferably, the seal is centered with respect to the thickness of the plate 2 , in the opening 3 arranged so that the offset between the seal 4 and the top 8th the plate 2 the offset between the seal 4 and the bottom 9 the plate 2 like.

The seal 4 has two sections, a radially outer section 6 and a radially inner portion 7 , The radially outer portion is adjacent to the edge of the opening 3 while the radially inner portion of the seal of the seal opening 5 is facing. The radially inner section 7 has an acute-angled cross-section extending in the direction of the axis of the seal opening 5 rejuvenated. The radially outer section 6 has no such rejuvenation.

In a second embodiment ( 3 ) are also radially extending cuts 10 in the seal 4 provided so that first segments 11 and second segments 12 the seal 4 arise, which are formed differently. However, the first and second segments can also be formed identically. Otherwise, this second embodiment corresponds to the first embodiment.

In the 3 and 4 are eight cuts 10 provided, however, it may be 2 to 24, preferably 4 to 20, more preferably 6 to 18 incisions 10 be provided.

The width of the first segments and the second segments is preferably the same. However, the strength of the first and second segments is preferably different. In this way, a spring-like effect of the seal is achieved. The length of the first and second segments in the plane of the plastic flange 1 can be the same or different. Likewise, the length of the radially outer sections 6 the first segments 11 from the length of the radially outer sections 6 the second segments 12 but this does not have to. In addition, the length of the radially inner sections 7 the first segments 11 from the length of the radially inner sections 7 the second segments 12 but this does not have to.

In 4 is to recognize that the second segments 12 in the area of the radially outer sections 6 have a greater thickness than the first segments. As a result, the acute-angled radially inner portions 7 the second segments 12 a larger acute angle than the radially inner portions 7 the first segments 11 on.

In 5 an embodiment of the invention is shown between each two adjacent incisions 10 radial reinforcements 13 having.

The 6 to 11 show further, alternative design forms of the seal 4 ,

In the 6 to 8th is a seal 4 represented with a double sealing lip. The gasket faces the double seal lip 4 on the side facing its axis a concentric circumferential incision 14 on. The concentric circumferential incision 14 extends over the entire length of the seal 4 in the radial direction, whereby the seal in the axial direction is divided into two parts, so that two sealing lips 15 arise.

In the 6 and 7 are the two sealing lips 15 designed so that they each have an acute-angled cross-section in the radial direction, wherein they taper towards the axis of the sealing opening, so that the tip of the sealing lips 15 the axis of the seal opening 5 is facing. The concentric nick 14 has an acute-angled cross section in the radial direction, from the edge of the receiving opening 3 to the axis of the seal opening 5 increases.

In 8th The top of the upper sealing lip and the bottom of the lower sealing lip are parallel to each other. The concentric circumferential incision 14 has a rectangular cross-section. Likewise, the two sealing lips 15 preferably also a rectangular cross-section. The sealing lips 15 can at their the axis of the seal opening 5 rounded side facing.

9 shows a seal 4 with a triple-sealing lip. The triple seal lip shown points the seal 4 on the side facing its axis two spaced apart, mutually parallel, concentric circumferential cuts 14 on. Otherwise, the in 9 illustrated seal 4 the in 8th shown seal.

10 shows a seal 4 which has the shape of a balloon seal. The seal 4 has a concentric circumferential cavity 16 , The cross section of this cavity is rectangular, but it is rounded in the direction of the axis of the seal opening. The top and bottom of the seal 4 run parallel to each other and to the top 10a and bottom 10b the plate 2 ,

In 11 shows the seal 4 at its the seal opening 5 facing side a projection 17 on.

1

Plastic flange

2

plate

3

inlet opening

4

poetry

5

passage opening

6

radially outer portion of the seal 4

7

radially inner portion of the seal 4

8th

Top of the plate 2

9

Bottom of the plate 2

10

radial cuts

11

first segments of the seal 4

12

second segments of the seal 4

13

radial running reinforcements

14

concentric running cuts

15

sealing lip

16

cavity in a sealing lip

17

projection

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 102005041811 A1 [0003, 0004, 0004]
• - DE 29520610 U1 [0005]

Claims (17)

Vacuum cleaner bag with a plastic flange for connecting the vacuum cleaner bag to the nozzle and / or housing of a vacuum cleaner, wherein - the plastic flange ( 1 ) an entrance opening ( 3 ), through which the neck of the vacuum cleaner is guided, and to the edge of the opening ( 3 ) a seal ( 4 ) for sealing the connection between the plastic flange and the nozzle, which is in one or two pieces with the plastic flange ( 1 ) is trained; In a first state the seal ( 4 ) completely in the plane of the plastic flange ( 1 ) and in a second state at least a part of the seal ( 4 ) abuts the outside of the nozzle; and - radially inner section ( 7 ) of the seal ( 4 ) has an acute-angled cross-section, wherein the radially outer portion ( 6 ) of the seal ( 4 ) has a thickness which is less than the thickness of the plastic flange ( 1 ), and the radially outer portion (FIG. 6 ) both from the top ( 8th ) as well as the underside ( 9 ) of the plastic flange ( 1 ) is arranged offset. Vacuum cleaner bag according to claim 1, characterized in that the expansion of the seal ( 4 ) in the first state corresponds to at least 0.25 to 0.4 times the longitudinal extent of the opening. Vacuum cleaner bag according to claim 1 or claim 2, characterized in that the seal ( 4 ) radially in the plane of the plastic flange ( 1 ) incisions ( 10 ) having. Vacuum cleaner bag according to claim 3, characterized in that the seal ( 4 ) first segments ( 11 ) and second segments ( 12 ) formed by the radial cuts ( 10 ) are separated, wherein the radially inner portions ( 7 ) of the first segments ( 11 ) have an acute-angled cross-section whose acute angle is greater than the acute-angled cross-section of the radially inner portions ( 7 ) of the second segments ( 12 ). Vacuum cleaner bag according to claim 3 or claim 4, characterized in that the seal ( 4 ) first segments ( 11 ) and second segments ( 12 ) formed by the radial cuts ( 10 ), the first segments ( 11 ) a greater extent in the plane of the plastic flange ( 1 ) as the second segments ( 12 ) exhibit. Vacuum cleaner bag according to claim 3 or claim 4, characterized in that the seal ( 4 ) first segments ( 11 ) and second segments ( 12 ) formed by the radial cuts ( 10 ), the first segments ( 11 ) a smaller extent in the plane of the plastic flange ( 1 ) as the second segments ( 12 ) exhibit. Vacuum cleaner bag according to one of the preceding claims, characterized in that the ratio of the inner portion ( 7 ) of the seal ( 4 ) and the outer section ( 8th ) of the seal ( 4 ) with respect to the extent in the plane of the plastic flange ( 1 ) Is 1: 2 to 1:10. Vacuum cleaner bag according to one of the preceding claims, characterized in that the plastic flange ( 1 ) is glued to a wall of the vacuum cleaner bag. Vacuum cleaner bag according to one of the preceding claims, characterized in that the plastic flange ( 1 ) is welded or glued to a wall of the vacuum cleaner bag. Vacuum cleaner bag according to one of the preceding claims, characterized in that a closure element for closing the inlet opening ( 3 ) of the plastic flange ( 1 ) is provided. Vacuum cleaner bag according to one of the preceding claims, characterized in that the seal ( 4 ) radially in the plane of the plastic flange ( 1 ) reinforcements ( 13 ) having. Plastic flange for a vacuum cleaner bag, whereby - the plastic flange ( 1 ) an entrance opening ( 3 ), through which the neck of the vacuum cleaner is guided, and to the edge of the opening ( 3 ) a seal ( 4 ) for sealing the connection between the plastic flange ( 1 ) and the nozzle adjoining the one or two-piece with the plastic flange ( 1 ) is trained; In a first state the seal ( 4 ) completely in the plane of the plastic flange ( 1 ) and in a second state at least a part of the seal ( 4 ) abuts the outside of the nozzle; and - the radially inner portion ( 7 ) of the seal ( 4 ) has an acute-angled cross-section, wherein the radially outer portion ( 6 ) of the seal ( 4 ) has a thickness which is less than the thickness of the plastic flange ( 1 ), and the radially outer portion (FIG. 6 ) both from the top ( 8th ) as well as the underside ( 9 ) of the plastic flange ( 1 ) is arranged offset. Plastic flange according to claim 12, characterized in that that it is made of an elastomer. Plastic flange according to claim 12, characterized in that that it is made of a thermoplastic elastomer is. Plastic flange according to one of the claims 12 to 14, characterized in that it means of a Injection molding has been produced. Plastic flange according to one of claims 12 to 15, characterized in that the entire plastic flange ( 1 ), including the seal ( 4 ), made of the same material. Plastic flange according to one of the claims 12 to 16, characterized in that the seal so is arranged that this without introduction of the Socket on the device housing seals.