EP1662035B1 - Plastic tub with air trap for a washing machine - Google Patents
Plastic tub with air trap for a washing machine Download PDFInfo
- Publication number
- EP1662035B1 EP1662035B1 EP05024886A EP05024886A EP1662035B1 EP 1662035 B1 EP1662035 B1 EP 1662035B1 EP 05024886 A EP05024886 A EP 05024886A EP 05024886 A EP05024886 A EP 05024886A EP 1662035 B1 EP1662035 B1 EP 1662035B1
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- EP
- European Patent Office
- Prior art keywords
- washing tub
- plastics material
- tub
- moulded
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/26—Casings; Tubs
- D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
- D06F37/262—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements made of plastic material, e.g. by injection moulding
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/26—Casings; Tubs
- D06F37/266—Gaskets mounted between tub and casing around the loading opening
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/087—Water level measuring or regulating devices
Definitions
- the invention relates to a plastic tub for a washing machine comprising a cylinder-shaped container surrounding the drum, to each of which a molded Laugen interchangeerkappe is arranged on one of the Laugen inherenterkappen an air trap for measuring the water level is arranged with a downwardly open housing with includes an attached at the top of the housing nozzle for a hose.
- Such an air trap known from the prior art is used to detect in particular the filling level of the washing liquid in a washing drum.
- the water penetrates from the underside of the open air trap housing, wherein the trapped air is compressed in the air trap with increasing filling level.
- the pressure of the compressed air in the air trap is a measure of the level height.
- an air trap is known, which is arranged in particular on one of the lye container caps.
- the air trap described in this document is formed by a separately attached housing cover part, which is attached to molded areas on the housing cap and is provided with a corresponding additional seal.
- vat washing machine which comprises an additional container with an air trap in addition to the tub with a vertically rotating agitator.
- the air trap is arranged outside this container and connected at the bottom by a conduit to the interior of the container.
- a so-called storage container for a dishwasher with an upwardly directed nozzle.
- a tubular lance as introduced separate part, at the at the outwardly projecting end of a hose is connected.
- the invention thus raises the problem of continuing to form a plastic tub and here in particular a tub container cap, in which it is possible to make the arrangement of the air trap on the tub cap so that the integration of the air trap can be realized with an injection mold.
- the achievable with the present invention consist in that the downwardly open housing is formed penetrating penetrating with the attached opening stub in the wall of the tub container cap, so that the tub container cap is formed with the air trap of a one-piece molding. Due to this design it is achieved that the housing of the air trap is integrated in an injection mold such that in an injection pass next to the air trap and the tub container cap can be injected. This results in a fully integrated air trap on the tub cap, without the need for additional caps and seals on the tub cap. As a result, the technical tool modification effort is minimized for changes to the air trap, because only a single slider in the injection mold for the tub cap is required for the shape of the hollow body of the air trap. This also ensures that the volume and the opening cross-section can be matched to the existing air traps, so that large changes or changes in process engineering or measurement technology can be avoided.
- the housing with the opening nozzle occupies a partial area of the outer wall side of the suds container cap, wherein the opening sump is shaped upwards at a preferably acute angle to the outer wall side of the suds container cap.
- the opening piece is easily accessible in a space-saving arrangement for the attachment of a hose.
- the housing formation designed such that the housing with its downwardly open area occupies a portion of the inner wall side of the tub container cap, wherein the opening portion is formed projecting at a preferably also acute angle to the inner wall side downwardly projecting.
- two Endformungsraumen can be provided, wherein one is arranged laterally and the other in the angular direction of the air trap.
- the housing forming the portion of the inner wall side is stepped down to increase the opening cross-section.
- the step under a slope which is also beneficial to the final forming process.
- the walls forming the housing are parallel to each other, which also causes a favorable final molding.
- the opening piece for the hose is formed inwardly directed into the housing. Due to this design, it is possible to work only with a slider in the mold, in particular to mold the housing of the air trap. To lock the end of the hose firmly to the opening of the inwardly directed opening, a sealing edge is formed in the sleeve area of the inwardly directed opening, serving as a rear catch for an inserted end of the hose.
- the housing of the air trap is formed from a lower and an upper housing part, wherein the downwardly open lower housing part is formed penetrating into the wall of the tub container cap.
- the interior of the air trap is accessible from the outside, because the upper housing part is removably disposed on the lower housing part on the outside of the tub container cap.
- good accessibility for the cleaning of the air trap housing is provided.
- the upper housing part is integrally connected via a film or film hinge with the lower housing part, whereby the molding can be carried out in an injection molding tool.
- the upper housing part is pivotally arranged with the opening nozzle by means of a film hinge on the lower housing part, so that the tub container cap can be formed with the two housing parts of a one-piece molding.
- the lower housing part occupies a portion of the outer wall side of the tub container cap, wherein the portion is wedge-shaped out of the wall at a preferably acute angle to the outside upwards, so that the Outside a rectangular or square opening cross-section results.
- the downwardly open region of the lower housing part is formed, wherein the lower housing part occupies the inner wall side of the tub container cap with its portion and the opening portion is also projecting downwardly projecting at an acute angle to the inner wall side.
- the downwardly open region of the lower housing part to increase the opening area so the Wassereintritts Schemereiches, stepped down.
- the step runs here under a slope, which favors in particular the shape.
- the side walls forming the housing run parallel to one another, so that a channel-shaped housing that is rectangular in its extension or the interior has a rectangular profile in its extension.
- a circumferential groove for receiving a seal is integrally formed on the upper housing part.
- pins for locking locking are formed on the outer wall of the upper housing part.
- ribs are formed on the lateral walls of the lower housing part, which occupies a portion of the inner wall side of the tub container cap, protruding beyond the opening area, in which bores are arranged which form latching openings for the pins.
- FIG. 6 is a washing machine 30 with a tub 1 sketched in a side view as a section.
- the tub 1 consists at least of a cylindrical shaped container 2 which surrounds a drum 31.
- the cylindrical container 2 is closed by at least one end wall 3.
- FIGS. 1 and 2 show a section of a plastic liquor container 1.
- a molded Laugen alternerkappe 3 is arranged in each case at the end faces.
- an air trap 4 for measuring the washing liquid level is arranged on one of the lye container caps 3, which is subsequently attached to the container.
- the air trap 4 in this case has a downwardly open housing 5, with a top of the housing 5 scheduled opening stub 6 for a measuring hose not shown.
- the downwardly open housing 5 is formed with the attached opening stub 6 in the tub container cap 3, so that the tub cap 3 is formed with the air trap 4 of a one-piece molding.
- the fully integrated air trap 4 can be produced with a molding tool, wherein only with an additional slider, the hollow body portion of the housing 5 can be formed.
- the corresponding Endformungscardien are shown by the arrows 13, 14, 15.
- the demolding device 13 being provided for a first slider and the demoulding device 15 for a second slider.
- the demolding device 14 for the mold is movable away from the outer wall of the tub container cap.
- the embodiment of the FIG. 2 needed for the formation of the air trap housing 5, only one slide, which is moved out of the lower opening portion 8 in the direction of arrow 13.
- the housing 5 with the opening stub 6 takes a portion of the outer wall side 7 of the tub cap 3, wherein the opening stub 6 is formed protruding upwards at a preferably acute angle to the outer wall side.
- This area is formed with the one slider whose direction of arrow 15 is indicated at the top.
- the housing 5 is formed with its downwardly open area 8, which occupies a portion of the inner wall side 9 of the tub cap 3.
- the opening portion 8 is formed projecting downwards at a preferably also acute angle to the inner wall side 9.
- the air trap housing 5 is formed in the region of the wall of the tub cap 3. Like from the FIG. 1 and 2 can be seen further, the housing 5 forming portion of the inner wall side 9 is stepped down to increase the opening area 8. In order to ensure in particular a clean final shaping, while the step 10 is arranged to extend under a slope.
- the walls 7 and 9 forming the housing 5 run parallel to one another.
- the opening stub 6 for the hose is formed inwardly directed into the housing 5
- the opening stub 6 can be realized by means of a single slider in the mold, in the manufacture during demolding according to the corresponding Endformungscardi 13 from the interior of the housing 5 is moved out.
- FIG. 3 shows a detailed view, in particular of the opening nozzle 6, wherein here in the sleeve portion 11 of the inwardly opening port 6, a sealing edge 12 is formed or formed, which provides a rear notch for its attachment and / or sealing for an imported hose not shown.
- FIGS. 1 and 2 illustrated manufacturing principles for an air trap 4, it requires no further components.
- the pressure transmitter it is not necessary to change the injection mold for the tub. It is sufficient here a change of the tool for the cap or possibly only required for the formation of the housing 5 slide.
- FIGS. 4 and 5 show an isolated view of an air trap 4, which is arranged on a non-illustrated plastic tub for a washing machine, comprising a drum surrounding the cylinder-shaped container.
- the air trap 4 is provided on one of the front sides arranged in the tub cap 3, wherein only from the FIG. 4 a portion of the Laugen inherenterkappenwand 103 can be seen.
- the air trap 4 serves to measure the filling level of the washing liquid in the washing machine 30.
- the housing of the air trap 4 consists of a downwardly open lower housing part 104 and an upper housing part 107 with an attached opening stub 105, for a hose, not shown.
- the lower housing part 104 is formed penetrating in the wall 103 of the tub cap 3.
- the tub container cap 3 can be formed with the two housing parts 104 and 107 of a one-piece molding.
- the lower housing part 104 occupies a portion of the outer wall side 109 of the tub cap 3 and is at an acute angle to the outer wall side 109 outwardly wedge-shaped out of the wall 103 formed out, so that there is a rectangular or square opening cross-section 110 to the outside ,
- the downwardly opened portion 111 of the lower housing part 104 occupies a portion of the inner wall side 112 of the tub cap 3, wherein the opening portion 111 is formed projecting at a preferably also acute angle to the inner wall side 112 downwardly projecting.
- the downwardly opened portion 111 of the lower housing portion 106 is stepped to increase the opening area 110.
- the step 113 extends under a slope.
- the lateral walls 106.1 and 106.2 forming the lower housing part 104 run parallel to one another, so that a rectangular profile results in the course of the interior of the housing.
- a circumferential groove 114 for receiving a seal is formed on the upper housing part 107 and formed.
- pins 115.1 and 115.2 are formed for occlusion locking.
- the lateral outer walls 106.1, 106.2 of the lower housing part 104 which occupies a portion of the inner wall side 112 of the tub cap 3, formed on the opening portion 110 protruding ribs 116.1 and 116.2, in which Holes 117.1 and 117.2 are arranged, which form latching openings for the pins 115.1 and 115.2.
- the ribs 116.1 and 116.2 form practically a partial Extension of the side walls 106.1 and 106.2.
- the outwardly directed edges of the ribs 116.1 and 116.2 are beveled. This oblique course is touched inwards or latching side, whereby an inclined to the inside of the housing bevel is formed.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Closures For Containers (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Processing Of Solid Wastes (AREA)
- Cleaning In General (AREA)
Abstract
Description
Die Erfindung betrifft einen Kunststofflaugenbehälter für eine Waschmaschine umfassend ein die Trommel umgebenden zylinderförmig geformtes Behältnis, an das jeweils an den Stirnseiten eine geformte Laugenbehälterkappe angeordnet ist, wobei an einer der Laugenbehälterkappen eine Luftfalle zur Messung des Wasserfüllstandes angeordnet ist, die ein nach unten geöffnetes Gehäuse mit einem oben am Gehäuse angesetzten Öffnungsstutzen für einen Schlauch umfasst.The invention relates to a plastic tub for a washing machine comprising a cylinder-shaped container surrounding the drum, to each of which a molded Laugenbehälterkappe is arranged on one of the Laugenbehälterkappen an air trap for measuring the water level is arranged with a downwardly open housing with includes an attached at the top of the housing nozzle for a hose.
Eine derartige nach dem Stand der Technik bekannte Luftfalle wird dazu genutzt, um insbesondere die Füllstandshöhe der Waschflüssigkeit in einer Waschtrommel zu erfassen. Hierbei dringt von der Unterseite des offenen Luftfallengehäuses das Wasser ein, wobei mit steigender Füllstandshöhe die eingeschlossene Luft in der Luftfalle komprimiert wird. Der Druck der komprimierten Luft in der Luftfalle ist ein Maß für die Füllstandshöhe. So ist beispielsweise aus der
Aus der
Eine andere Lösung wird beispielsweise in der
In der
In der
Bei diesen nach dem Stand der Technik bekannten Luftfallenanordnungen wird es als nachteilig angesehen, dass einerseits die Luftfalle als gesondertes Bauteil an der Laugenbehälterkappe angeordnet ist, wobei andererseits insbesondere die Anordnung der Luftfalle an dem zylinderförmig geformten Behältnis einen hohen Änderungsaufwand bedarf, wenn beispielsweise eine Änderung der Geometrie für die Lufterfassung vorgesehen werden muss. Hierzu ist es dann erforderlich, dass ein komplexes Spritzgusswerkzeug vorgehalten werden muss, um den Luftfallenhohlkörper zu realisieren.In these known in the art air trap assemblies, it is considered disadvantageous that on the one hand the air trap is arranged as a separate component to the tub container cap, on the other hand, in particular the arrangement of the air trap on the cylinder-shaped container requires a lot of change, if, for example, a change in Geometry for air detection must be provided. For this purpose, it is then necessary that a complex injection molding tool must be kept in order to realize the air trap hollow body.
Der Erfindung stellt sich somit das Problem, einen Kunststofflaugenbehälter und hier insbesondere eine Laugenbehälterkappe dahingehend weiter zu bilden, bei der es möglich ist, die Anordnung der Luftfalle an der Laugenbehälterkappe so zu gestalten, dass mit einem Spritzgusswerkzeug die Integration der Luftfalle zu realisieren ist.The invention thus raises the problem of continuing to form a plastic tub and here in particular a tub container cap, in which it is possible to make the arrangement of the air trap on the tub cap so that the integration of the air trap can be realized with an injection mold.
Erfindungsgemäß wird dieses Problem mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention, this problem is solved by the features of
Die mit der Erfindung erreichbaren Vorteile bestehen darin, dass das nach unten geöffnete Gehäuse mit dem angesetzten Öffnungsstutzen in die Wand der Laugenbehälterkappe durchdringend eingeformt ist, so dass die Laugenbehälterkappe mit der Luftfalle aus einem einstückigen Formteil gebildet ist. Auf Grund dieser Ausbildung wird erreicht, dass das Gehäuse der Luftfalle derart in einem Spritzgusswerkzeug integriert ist, dass in einem Spritzgussgang neben der Luftfalle auch die Laugenbehälterkappe gespritzt werden kann. Somit ergibt sich eine vollintegrierte Luftfalle an der Laugenbehälterkappe, ohne dass zusätzliche Kappen und Dichtungen an der Laugenbehälterkappe benötigt werden. Dadurch wird der werkzeugtechnische Änderungsaufwand bei Änderungen an der Luftfalle minimiert, weil für die Formgebung des Hohlkörpers der Luftfalle nur ein einziger Schieber im Spritzgusswerkzeug für die Laugenbehälterkappe erforderlich ist. Dadurch wird auch erreicht, dass das Volumen und der Öffnungsquerschnitt auf die vorhandenen Luftfallen abgestimmt werden kann, so dass große Änderungen bzw. Umstellungen bei der Verfahrenstechnik bzw. Messtechnik vermieden werden können.The achievable with the present invention consist in that the downwardly open housing is formed penetrating penetrating with the attached opening stub in the wall of the tub container cap, so that the tub container cap is formed with the air trap of a one-piece molding. Due to this design it is achieved that the housing of the air trap is integrated in an injection mold such that in an injection pass next to the air trap and the tub container cap can be injected. This results in a fully integrated air trap on the tub cap, without the need for additional caps and seals on the tub cap. As a result, the technical tool modification effort is minimized for changes to the air trap, because only a single slider in the injection mold for the tub cap is required for the shape of the hollow body of the air trap. This also ensures that the volume and the opening cross-section can be matched to the existing air traps, so that large changes or changes in process engineering or measurement technology can be avoided.
Um insbesondere das Spritzgusswerkzeug hinsichtlich seiner Endformungsrichtungen günstig zu gestalten, nimmt das Gehäuse mit dem Öffnungsstutzen einen Teilbereich der Außenwandseite der Laugenbehälterkappe ein, wobei der Öffnungsstutzen unter einem vorzugsweise spitzen Winkel zur Außenwandseite der Laugenbehälterkappe nach oben ragend herausgeformt ist. Somit ist der Öffnungsstutzen bei platzsparender Anordnung gut zugänglich für die Befestigung eines Schlauches. Zur Innenseite gestaltet sich die Gehäusebildung derart, dass das Gehäuse mit seinem nach unten hin geöffnetem Bereich einen Teilbereich der Innenwandseite der Laugenbehälterkappe einnimmt, wobei der Öffnungsbereich unter einem vorzugsweise ebenfalls spitzen Winkel zur Innenwandseite nach unten ragend herausgeformt ist. Somit können zwei Endformungsrichtungen vorgesehen werden, wobei die eine seitlich und die andere in Winkelrichtung der Luftfalle angeordnet ist.In order in particular to make the injection molding tool favorable with respect to its final shaping directions, the housing with the opening nozzle occupies a partial area of the outer wall side of the suds container cap, wherein the opening sump is shaped upwards at a preferably acute angle to the outer wall side of the suds container cap. Thus, the opening piece is easily accessible in a space-saving arrangement for the attachment of a hose. To the inside, the housing formation designed such that the housing with its downwardly open area occupies a portion of the inner wall side of the tub container cap, wherein the opening portion is formed projecting at a preferably also acute angle to the inner wall side downwardly projecting. Thus, two Endformungsrichtungen can be provided, wherein one is arranged laterally and the other in the angular direction of the air trap.
In Weiterbildung der Erfindung ist der das Gehäuse bildende Teilbereich der Innenwandseite zur Vergrößerung des Öffnungsquerschnittes stufenförmig abgesetzt. Hierbei verläuft die Stufe unter einer Schräge, was ebenfalls begünstigend für den Endformungsvorgang ist. Die das Gehäuse bildenden Wände verlaufen zueinander parallel, was ebenfalls eine begünstigende Endformung hervorruft.In a further development of the invention, the housing forming the portion of the inner wall side is stepped down to increase the opening cross-section. Here is the step under a slope, which is also beneficial to the final forming process. The walls forming the housing are parallel to each other, which also causes a favorable final molding.
Gemäß einer anderen Ausbildung, insbesondere des oberen Bereichs des Gehäuses, wird vorgeschlagen, dass der Öffnungsstutzen für den Schlauch nach innen in das Gehäuse gerichtet geformt ist. Auf Grund dieser Ausbildung ist es möglich nur mit einem Schieber in der Form zu arbeiten, um insbesondere das Gehäuse der Luftfalle einzuformen. Um das Schlauchende fest am Öffnungsstutzen des nach innen gerichteten Öffnungsstutzen zu arretieren, ist im Hülsenbereich des nach innen gerichteten Öffnungsstutzen eine Dichtkante angeformt, die als Hinterrast für ein eingeführtes Schlauchende dient.According to another embodiment, in particular the upper portion of the housing, it is proposed that the opening piece for the hose is formed inwardly directed into the housing. Due to this design, it is possible to work only with a slider in the mold, in particular to mold the housing of the air trap. To lock the end of the hose firmly to the opening of the inwardly directed opening, a sealing edge is formed in the sleeve area of the inwardly directed opening, serving as a rear catch for an inserted end of the hose.
In einer zweckmäßigen Ausführungsform ist das Gehäuse der Luftfalle aus einem unteren und einem oberen Gehäuseteil geformt, wobei das nach unten geöffnete untere Gehäuseteil in die Wand der Laugenbehälterkappe durchdringend eingeformt ist. Somit ist der Innenraum der Luftfalle von außen zugänglich, weil der obere Gehäuseteil abnehmbar an dem unteren Gehäuseteil auf der Außenseite der Laugenbehälterkappe angeordnet ist. Somit wird eine gute Zugänglichkeit für die Reinigung des Luftfallengehäuses bereitgestellt.In an advantageous embodiment, the housing of the air trap is formed from a lower and an upper housing part, wherein the downwardly open lower housing part is formed penetrating into the wall of the tub container cap. Thus, the interior of the air trap is accessible from the outside, because the upper housing part is removably disposed on the lower housing part on the outside of the tub container cap. Thus, good accessibility for the cleaning of the air trap housing is provided.
In einer vorteilhaften Ausgestaltung ist das obere Gehäuseteil über ein Film- oder Folienscharnier einstückig mit dem unteren Gehäuseteil verbunden, wodurch die Formung in einem Spritzgusswerkzeug vorgenommen werden kann. Der obere Gehäuseteil ist dabei mit dem Öffnungsstutzen mittels eines Folienscharniers an dem unteren Gehäuseteil schwenkbar angeordnet, so dass die Laugenbehälterkappe mit den beiden Gehäuseteilen aus einem einstückigen Formteil gebildet werden kann. Somit werden zwei Vorteile erreicht: Einmal, dass eine Integration der Luftfalle an der Laugenbehälterkappe eingeformt wird, wobei andererseits der Vorteil erreicht wird, dass durch die Anbindung mittels des Folienscharniers die Zugänglichkeit zum Innenraum des Luftfallengehäuses besteht.In an advantageous embodiment, the upper housing part is integrally connected via a film or film hinge with the lower housing part, whereby the molding can be carried out in an injection molding tool. The upper housing part is pivotally arranged with the opening nozzle by means of a film hinge on the lower housing part, so that the tub container cap can be formed with the two housing parts of a one-piece molding. Thus, two advantages are achieved: Once that an integration of the air trap is formed on the tub container cap, on the other hand, the advantage is achieved that the accessibility to the interior of the air trap housing is through the connection by means of the film hinge.
Um spritzgusstechnisch eine möglichst günstige Einbindung der Luftfalle in der Laugenbehälterkappe zu erreichen, nimmt der untere Gehäuseteil einen Teilbereich der Außenwandseite der Laugenbehälterkappe ein, wobei der Teilbereich unter einem vorzugsweise spitzen Winkel zur Außenseite nach oben ragend keilförmig aus der Wand herausgeformt ist, so dass sich zur Außenseite ein rechteckig oder quadratischer Öffnungsquerschnitt ergibt. Es kann jedoch zur Verbesserung der Dichtungseigenschaften zwischen oberen Gehäuseteil und unteren Gehäuseteil zweckmäßig sein, den aus der Wand herausgeformten Teilbereich so zu formen, dass sich ein ovaler, elliptischer oder kreisförmiger Öffnungsquerschnitt ergibt.In order to achieve the most favorable possible integration of the air trap in the tub container cap, the lower housing part occupies a portion of the outer wall side of the tub container cap, wherein the portion is wedge-shaped out of the wall at a preferably acute angle to the outside upwards, so that the Outside a rectangular or square opening cross-section results. However, in order to improve the sealing properties between the upper housing part and the lower housing part, it may be expedient to shape the partial area formed out of the wall in such a way that an oval, elliptical or circular opening cross-section results.
Entsprechend ist der nach unten hin geöffnete Bereich des unteren Gehäuseteils ausgebildet, wobei der untere Gehäuseteil mit seinem Teilbereich die Innenwandseite der Laugenbehälterkappe einnimmt und der Öffnungsbereich unter ebenfalls einem spitzen Winkel zur Innenwandseite nach unten ragend herausgeformt ist.Accordingly, the downwardly open region of the lower housing part is formed, wherein the lower housing part occupies the inner wall side of the tub container cap with its portion and the opening portion is also projecting downwardly projecting at an acute angle to the inner wall side.
Hierbei ist der nach unten hin geöffnete Bereich des unteren Gehäuseteils zur Vergrößerung des Öffnungsbereiches, also des Wassereintrittsbereichreiches, stufenförmig abgesetzt. Die Stufe verläuft hierbei unter einer Schrägen, die insbesondere die Ausformung begünstigt. Die das Gehäuse bildenden seitlichen Wände verlaufen parallel zueinander, so dass sich ein in seiner Erstreckung rechteckiges kanalförmiges Gehäuse bzw. der Innenraum in seiner Erstreckung ein rechteckiges Profil aufweist. Um insbesondere den oberen Gehäuseteil gegenüber dem unteren Gehäuseteil abzudichten, ist an dem oberen Gehäuseteil eine umlaufende Nut zur Aufnahme einer Dichtung angeformt. Für ein werkzeugloses Öffnen bzw. Schließen des oberen Gehäuseteils, sind an der Außenwand des oberen Gehäuseteils Zapfen zur verschließenden Verrastung angeformt. Dabei sind an den seitlichen Wänden des unteren Gehäuseteils, der einen Teilbereich der Innenwandseite der Laugenbehälterkappe einnimmt, über dem Öffnungsbereich hinausragend Rippen angeformt, in denen Bohrungen angeordnet sind, die Rastöffnungen für die Zapfen bilden.Here, the downwardly open region of the lower housing part to increase the opening area, so the Wassereintrittsbereichreiches, stepped down. The step runs here under a slope, which favors in particular the shape. The side walls forming the housing run parallel to one another, so that a channel-shaped housing that is rectangular in its extension or the interior has a rectangular profile in its extension. In order in particular to seal the upper housing part with respect to the lower housing part, a circumferential groove for receiving a seal is integrally formed on the upper housing part. For tool-free opening or closing of the upper housing part, pins for locking locking are formed on the outer wall of the upper housing part. In this case, ribs are formed on the lateral walls of the lower housing part, which occupies a portion of the inner wall side of the tub container cap, protruding beyond the opening area, in which bores are arranged which form latching openings for the pins.
In Weiterbildung, um ein leichtes Verschließen bzw. ein Klemmschließen zu erreichen, sind die Kanten der Rippen einrastseitig angefasst, wodurch sich eine Schräge ergibt. Wird also der obere Gehäuseteil verschwenkt, so kommen zunächst die Zapfen mit diesen Schrägen in Verbindung, wobei die Schrägen ein Auseinanderdrücken der Rippen begünstigen, so dass die Zapfen dann leichter in die Rastöffnungen einschnappen.In a further development, in order to achieve a slight closing or a clamping closing, the edges of the ribs are touched on the latching side, resulting in a bevel. Thus, if the upper housing part is pivoted, first the pins come into contact with these bevels, the bevels favoring pushing apart of the ribs, so that the pins then snap into the latching openings more easily.
Ein Ausführungsbeispiel der Erfindung wird an Hand der nachstehenden
- Fig. 1:
- eine geschnittene Darstellung einer ersten Ausführungsform einer eingefassten Luftfalle in einer Laugebehälterkappe;
- Fig. 2:
- eine geschnittene Darstellung einer anderen Ausführungsform einer eingefassten Luftfalle in einer Laugenbehälterkappe;
- Fig. 3:
- eine Detailansicht insbesondere des Öffnungsstutzens der Ausführungsform gemäß der
;Figur 2 - Fig. 4, 5:
- eine Ausführungsform einer eingefassten Luftfalle mit abnehmbaren Oberteil und
- Fig. 6:
- eine schematische Darstellung einer Waschmaschine.
- Fig. 1:
- a sectional view of a first embodiment of a enclosed air trap in a Laugebehälterkappe;
- Fig. 2:
- a sectional view of another embodiment of a enclosed air trap in a tub container cap;
- 3:
- a detail view in particular of the opening stub of the embodiment according to the
FIG. 2 ; - 4, 5:
- an embodiment of a enclosed air trap with removable top and
- Fig. 6:
- a schematic representation of a washing machine.
In
Die
Wie in der Zusammenschau der beiden Figuren deutlich wird, ist das nach unten geöffnete Gehäuse 5 mit dem angesetzten Öffnungsstutzen 6 in die Laugenbehälterkappe 3 eingeformt, so dass die Laugenbehälterkappe 3 mit der Luftfalle 4 aus einem einstückigen Formteil gebildet ist. Als besonders vorteilhaft bei der dargestellten Ausführungsform ergibt sich, dass insbesondere die voll integrierte Luftfalle 4 mit einem Formwerkzeug herstellbar ist, wobei lediglich mit einem zusätzlichen Schieber der Hohlkörperbereich des Gehäuses 5 ausgeformt werden kann. Die entsprechenden Endformungsrichtungen sind mit den Pfeilen 13, 14, 15 dargestellt.As is clear in the synopsis of the two figures, the downwardly
Bei der Ausführungsform der
Wie aus der Zusammenschau der beiden
Es versteht sich nun von selbst, dass, wenn die beiden Schieber eingefahren sind, das Luftfallengehäuse 5 in dem Bereich der Wand der Laugenbehälterkappe 3 eingeformt wird. Wie aus der
Gemäß der Ausführungsform der
Die
Bei diesen nach den
Die
Das Gehäuse der Luftfalle 4 besteht aus einem nach unten geöffnetem unteren Gehäuseteil 104 und einem oberen Gehäuseteil 107 mit einem angesetzten Öffnungsstutzen 105, für einen nicht näher dargestellten Schlauch. Das untere Gehäuseteil 104 ist in der Wand 103 der Laugenbehälterkappe 3 durchdringend eingeformt.The housing of the
Wie aus der
Es versteht sich nun von selbst, dass entsprechend der angedeuteten Entformungsrichtungen diese Einbindung der Luftfalle 4 an der Wand 103 der Laugenbehälterkappe 3 mit zwei Schiebern vorgenommen werden kann, wobei zur Entformung zumindest ein Schieber nach oben in angedeuteter Pfeilrichtung 121 und ein weiterer Schieber nach unten in angedeuteter Pfeilrichtung 120 bewegt wird. Die Entformungsrichtung des Spritzgießwerkzeugs bzw. der Form verläuft horizontal von der Außenseite der Wand 103 weg, entsprechend der angedeuteten Pfeilrichtung 119.It goes without saying that according to the indicated Entformungsrichtungen this integration of the
Wie aus der
Wie die
Wie aus den
Claims (17)
- Plastics material washing tub (1) for a washing machine (30), the said washing tub comprising a container (2) moulded in the form of a cylinder surrounding the drum (31), a moulded washing tub cap (3) being disposed on each end face of the said container, wherein an air trap (4) for measuring the level of the water is disposed on one of the washing tub caps, the said air trap comprising a downwardly open housing with an opening nipple for a hose located at the top of the housing, characterised in that the downwardly open housing (5) with the opening nipple (6) is integrally moulded so as to penetrate the wall of the washing tub cap (3) such that the washing tub cap (3) with the air trap (4) is formed as a one-piece moulded part.
- Plastics material washing tub (1) according to claim 1, characterised in that the housing (5) with the opening nipple (6) assumes a part region of the outside wall side (7) of the washing tub cap (3), wherein the opening nipple (6) is moulded extending upwards at a preferably acute angle relative to the outside wall side of the washing tub cap (3).
- Plastics material tub (1) according to claim 2, characterised in that the housing (5) with its downwardly open region (8) assumes a part region of the inside wall side (9) of the washing tub cap (3), wherein the opening region (8) is moulded extending downwards at a preferably equally acute angle relative to the inside wall side of the washing tub cap (3).
- Plastics material washing tub (1) according to claim 3, characterised in that the part region of the inside wall side (9) that forms the housing (5) is offset in a step-like manner to enlarge the opening region (8).
- Plastics material tub (1) according to claim 4, characterised in that the step (10) extends at an inclination.
- Plastics material tub (1) according to claims 1 to 5, characterised in that the walls (7, 9) that form the housing (5) extend parallel to each other.
- Plastics material tub (1) according to one of claims 1 to 6, characterised in that the opening nipple (6) for the hose is moulded directed inwards into the housing (5).
- Plastics material tub (1) according to claim 7, characterised in that a sealing edge (12) is integrally moulded in the sleeve region (11) of the inwardly directed opening nipple (6).
- Plastics material tub (1) according to one of claims 1 to 5, characterised in that the housing comprises a bottom housing part (104) and a top housing part (107) with a one-piece integrally moulded opening nipple (105), wherein the bottom housing part (104) is integrally moulded so as to penetrate the wall (103) of the washing tub (3) and is open downwards.
- Plastics material tub (1) according to claim 9, characterised in that the top housing part (107) is pivotally disposed on the bottom housing part (104) by means of a foil hinge (108) such that the washing tub cap (3) with the two housing parts (106, 107) is moulded from a one-piece moulded part.
- Plastics material washing tub (1) according to claim 9 or 10, characterised in that the bottom housing part (104) assumes a part region of the outside wall side (109) of the washing tub cap (3) and is moulded (103) extending upwards out of the wall in a wedge-shaped manner at a preferably acute angle relative to the outside wall side (109) such that a rectangular or quadratic opening cross-section (11) is produced relative to the outside.
- Plastics material washing tub (1) according to claim 9 or 10, characterised in that the bottom housing part (104) assumes a part region of the outside wall side (109) of the washing tub cap (3) and is moulded (103) extending upwards out of the wall in a wedge-shaped manner at a preferably acute angle relative to the outside wall side (109) such that an oval, elliptical or circular opening cross-section is produced relative to the outside.
- Plastics material washing tub (1) according to one of claims 9 to 11, characterised in that the lateral walls (106.1, 106.2) that form the bottom housing part (104) extend parallel to each other.
- Plastics material washing tub (1) according to one of claims 9 to 12, characterised in that a circumferential groove (114) for accommodating a seal is integrally moulded on the top housing part (107).
- Plastics material washing tub (1) according to claim 9 to 12, characterised in that journals (115.1, 115.2) for latching in a locking manner are integrally moulded on the lateral outside walls of the top housing part (107).
- Plastics material washing tub (1) according to claim 15, characterised in that ribs (116.1, 116.2) that extend beyond the opening region (110) as upwardly directed extensions of the lateral walls (106,1, 106.2), are integrally moulded on the outside wall of the bottom housing part (104), which assumes a part region of the outside wall side (109) of the washing tub cap (3), bores (117.1, 117.2) being disposed in the said ribs, the said bores forming corresponding latch openings for the journals (115.1, 115.2) of the upper housing part (107).
- Plastics material washing tub (1) according to claim 16, characterised in that phases (118.1, 118.2) are realised on the latching side of the ribs (116.1, 116.2).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004057943A DE102004057943B3 (en) | 2004-11-30 | 2004-11-30 | The plastic wash tank of a domestic washing machine has a front panel with an integrally moulded water level pressure chamber |
DE102004057942A DE102004057942B3 (en) | 2004-11-30 | 2004-11-30 | A plastic wash tank for a domestic washing machine has a water level chamber in the front plate having two parts joined by an integral hinge |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1662035A1 EP1662035A1 (en) | 2006-05-31 |
EP1662035B1 true EP1662035B1 (en) | 2009-01-28 |
Family
ID=35695784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05024886A Not-in-force EP1662035B1 (en) | 2004-11-30 | 2005-11-15 | Plastic tub with air trap for a washing machine |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060112736A1 (en) |
EP (1) | EP1662035B1 (en) |
AT (1) | ATE422006T1 (en) |
DE (1) | DE502005006567D1 (en) |
ES (1) | ES2320463T3 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008052980A1 (en) * | 2006-10-31 | 2008-05-08 | Arcelik Anonim Sirketi | A washing machine |
DE202007003085U1 (en) * | 2007-03-02 | 2007-05-24 | BSH Bosch und Siemens Hausgeräte GmbH | Plastic moulded outer drum for a horizontal axis front loading washing machine has a horizontal outlet in the lower region directed to the side into which the pressure chamber is fitted |
US8578741B2 (en) * | 2009-12-17 | 2013-11-12 | Whirlpool Corporation | Washing machine with air trap |
KR20120089098A (en) * | 2011-02-01 | 2012-08-09 | 삼성전자주식회사 | Tub and washing machine having the same |
PL3120748T3 (en) * | 2015-07-23 | 2019-04-30 | Bonferraro Spa | Water level controller for dishwasher or the like |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1503759A1 (en) * | 1965-10-14 | 1969-04-17 | Constructa Werke Gmbh | Dishwasher |
US3737067A (en) * | 1971-02-22 | 1973-06-05 | A J Krajewski Manuf Co | Plastic box having integrally molded latch |
US3918457A (en) * | 1973-05-03 | 1975-11-11 | Mc Graw Edison Co | Water level control for washing machines |
DE2840241C2 (en) * | 1978-09-15 | 1988-07-28 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Washing machine drain nozzle |
IT1136452B (en) | 1980-07-03 | 1986-08-27 | Zanussi A Spa Industrie | PLASTIC TANK FOR WASHING MACHINES |
FR2599394B1 (en) * | 1986-05-27 | 1988-07-29 | Ciapem | INTEGRATED COMPRESSION CHAMBER TANK |
CA2026844C (en) | 1989-10-05 | 1999-05-11 | Tadashi Nukaga | Drum-type washing machine |
US5501354A (en) * | 1992-05-26 | 1996-03-26 | Stromberg; Per S. | Collapsible container |
DE19646440C2 (en) * | 1996-11-11 | 2003-04-10 | Bsh Bosch Siemens Hausgeraete | Plastic tub for a household washing machine |
TW415981B (en) * | 1998-07-16 | 2000-12-21 | Samsung Electronics Co Ltd | Washing machine having a hybrid sensor and a control method thereof |
IT1308702B1 (en) | 1999-02-16 | 2002-01-10 | Iar Siltal Spa | WASHING MACHINE |
-
2005
- 2005-11-15 DE DE502005006567T patent/DE502005006567D1/en active Active
- 2005-11-15 AT AT05024886T patent/ATE422006T1/en not_active IP Right Cessation
- 2005-11-15 EP EP05024886A patent/EP1662035B1/en not_active Not-in-force
- 2005-11-15 ES ES05024886T patent/ES2320463T3/en active Active
- 2005-11-30 US US11/291,472 patent/US20060112736A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
ATE422006T1 (en) | 2009-02-15 |
US20060112736A1 (en) | 2006-06-01 |
EP1662035A1 (en) | 2006-05-31 |
ES2320463T3 (en) | 2009-05-22 |
DE502005006567D1 (en) | 2009-03-19 |
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