EP2203583B1 - Plastic tub for a washing machine or a washer dryer - Google Patents
Plastic tub for a washing machine or a washer dryer Download PDFInfo
- Publication number
- EP2203583B1 EP2203583B1 EP08803700A EP08803700A EP2203583B1 EP 2203583 B1 EP2203583 B1 EP 2203583B1 EP 08803700 A EP08803700 A EP 08803700A EP 08803700 A EP08803700 A EP 08803700A EP 2203583 B1 EP2203583 B1 EP 2203583B1
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- solution container
- ribs
- reinforcing ribs
- plastics material
- material solution
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- 239000004033 plastic Substances 0.000 title claims abstract description 32
- 229920003023 plastic Polymers 0.000 title claims abstract description 32
- 238000005406 washing Methods 0.000 title claims description 18
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims description 23
- 238000010276 construction Methods 0.000 claims description 9
- 230000006641 stabilisation Effects 0.000 claims 1
- 101150114468 TUB1 gene Proteins 0.000 abstract description 5
- 230000000087 stabilizing effect Effects 0.000 abstract description 5
- 238000005452 bending Methods 0.000 description 7
- 238000001746 injection moulding Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005336 cracking Methods 0.000 description 3
- 241001136792 Alle Species 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
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
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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
- D06F37/264—Tubs provided with reinforcing structures, e.g. ribs, inserts, braces
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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
- D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
- D06F37/269—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for the bearing of the rotary receptacle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
Description
Die Erfindung geht aus von einer Waschmaschine mit einem Gehäuse und einem darin federnd aufgehängten Waschaggregat, wobei das Waschaggregat einen zylindrischen Kunststoff-Laugenbehälter beinhaltet, eine darin drehbar gelagerte Wäschetrommel, deren Achse eine im Wesentlichen waagerechte Ausrichtung aufweist, und einen Antriebsmotor, der die Wäschetrommel direkt oder unter Vermittlung einer Riemenscheibe von außen antreibt. Zur Lagerung der Trommelwelle weist die Stirnseitenwand des Laugenbehälters eine Lageraufnahme auf.The invention relates to a washing machine with a housing and a spring-mounted therein washing unit, wherein the washing unit includes a cylindrical plastic tub, a rotatably mounted laundry drum, whose axis has a substantially horizontal orientation, and a drive motor, the laundry drum directly or driven by the intermediary of a pulley from the outside. For storage of the drum shaft, the end wall of the tub on a bearing support.
Beim Betreiben der Waschmaschine, insbesondere beim Schleudern, treten enorme Dreh- und Biegekräfte auf, die von der drehbeweglichen Wäschetrommel erzeugt auf den Laugenbehälter übertragen werden. Die Belastung des Laugenbehälters steigt mit der Größe der Trommel und der Beladungsmenge. Die Dynamik der auf den Laugenbehälter wirkenden Kräfte ist abhängig von der Drehzahl der Wäschetrommel, die Krafteinwirkung auf die Laugenbehälter verstärkt sich insbesondere beim Trommelhochlauf.When operating the washing machine, especially when spinning, tremendous turning and bending forces occur, which are transmitted from the rotatable laundry drum to the tub. The load of the tub increases with the size of the drum and the load. The dynamics of the forces acting on the tub are dependent on the speed of the laundry drum, the effect of force on the tub increases particularly during drum run-up.
Bei den von vorn beschickbaren Waschmaschinen ist die Trommel einseitig gelagert. Bei diesen als Frontlader bekannten Waschmaschinen müssen die von der Wäschetrommel übertragenen Biege- und Drehkräfte von der Lageraufnahme in der Stirnseitenwand des Laugenbehälters aufgenommen und großflächig auf diese übertragen bzw. verteilt werden. Die Anforderungen bzgl. der mechanischen Festigkeit sind bei diesem Waschmaschinentyp besonders hoch. Die Konstruktion eines solchen Laugenbehälters muss eine ausreichende Festigkeit aufweisen, um allen Belastungen auf Dauer standhalten zu können, wobei für die Konstruktion des Laugenbehälters zu berücksichtigen ist, dass die mechanische Beanspruchung im Bereich der Lageraufnahme am höchsten ist und sich von der Lageraufnahme ausgehend über die Stirnseitenwand hin zum Behältermantel verringert.For front-loading washing machines, the drum is mounted on one side. In these washing machines known as front loaders, the bending and rotational forces transmitted by the laundry drum must be absorbed by the bearing receptacle in the end wall of the tub and be transferred or distributed over a large area thereof. The mechanical strength requirements are particularly high in this washer type. The design of such a tub must have sufficient strength to withstand all loads in the long term, it being considered for the construction of the tub that the mechanical stress in the bearing receptacle is highest and starting from the bearing receptacle on the front side wall reduced towards the container casing.
Geht man davon aus, dass die Lebensdauer einer Waschmaschine mehr als 10 Jahre beträgt, muss ein Laugenbehälter so ausgelegt sein, dass er über eine derartig lange Zeitdauer alle funktionalen Anforderungen erfüllen kann, insbesondere hinsichtlich der Haltbarkeit gegenüber den von der Trommel übertragenen mechanischen Beanspruchungen, sowie hinsichtlich der Wasserdichtheit und der Korrosionsbeständigkeit.Assuming that the life of a washing machine is more than 10 years, a tub must be designed so that it can fulfill all the functional requirements over such a long period of time, especially with regard to the durability of the mechanical transferred from the drum Stresses, as well as in terms of waterproofness and corrosion resistance.
Ferner muss von einem modernen Massenprodukt wie den Waschmaschinen gefordert werden, dass deren einzelne Baugruppen, wie im vorliegenden Falle der Laugenbehälter, nicht nur den funktionalen Anforderungen genügen muss, sondern sie müssen auch wirtschaftlich in der Herstellung sein sowie problemlos beim Recycling, wenn die Waschmaschine das Ende ihrer Lebensdauer erreicht hat.Furthermore, it must be required of a modern mass-produced product such as washing machines that their individual components, as in the present case the tub, not only meet the functional requirements, but they must also be economical to manufacture and easy to recycle when the washing machine Has reached the end of their life.
Damit der Laugenbehälter angemessen stabil ist, sind Kunststofflaugenbehälter für Waschmaschinen entwickelt worden, bei denen zusätzliche stabilisierende Mittel insbesondere für die Stirnseitenwand und die Lageraufnahme eingesetzt werden. Aus dem Stand der Technik sind als Stabilisierungsmittel Stege bzw. Rippen oder ein im Kunststoff der Stirnseitenwand integriertes Lagerkreuz aus Metall bekannt. Kunststofflaugenbehälter mit einem im Kunststoff der Stirnseitenwand integrierten metallischen Lagerkreuz sind in der Literatur in vielfältiger Form beschrieben. Es ist bekannt, derartige Kunststoffbehälter so durch Spritzgießen herzustellen, dass in der Form der Spritzmaschine zuerst das Lagerkreuz angeordnet wird und danach die Spritzung selbst erfolgt. Durch das Umspritzen des Lagerkreuzes wird dessen fester Sitz in der Stirnseitenwand ermöglicht.In order for the tub to be reasonably stable, plastic tubs have been developed for washing machines, in which additional stabilizing means are used in particular for the end wall and the bearing support. From the prior art, webs or ribs or a bearing cross made of metal integrated in the plastic of the end wall are known as stabilizing means. Plastic tote containers with a metallic bearing cross integrated in the plastic of the front side wall are described in manifold form in the literature. It is known to produce such plastic containers by injection molding, that in the form of the injection molding machine first the bearing cross is arranged and then the injection takes place itself. The encapsulation of the bearing cross its firm fit is made possible in the front wall.
Ein Kunststoffbehälter mit einem speziell gestalteten Lagerkreuz wird in der Patentschrift
Da es sich bei den genannten Laugenbehältern einerseits um einen Behälter aus Kunststoff und andererseits um ein Lagerkreuz aus Metall handelt, wirken sich deren unterschiedliche Materialeigenschaften auf den Abkühlungsprozess nach dem Spritzgießen in nachteiliger Weise derart aus, dass bedingt durch die unterschiedlichen Ausdehnungskoeffizienten und die unterschiedlichen Wärmeleitfähigkeiten es nach dem Umspritzen des metallischen Lagerkreuzes im Laugenbehälter zu erheblichen Spannungen kommt, die daraus resultieren, dass der Kunststoff beim Abkühlen auf Raumtemperatur schrumpft.Since the said liquor containers on the one hand to a container made of plastic and on the other hand to a bearing cross made of metal, their different material properties affect the cooling process after injection in a disadvantageous manner such that due to the different expansion coefficients and the different thermal conductivities it after the encapsulation of the metallic bearing cross in the tub to considerable Tension comes from the fact that the plastic shrinks on cooling to room temperature.
Die Kräfte, die dabei auf das Lagerkreuz einwirken, sind derart groß, dass sich das Lagerkreuz verformen kann. Weiterhin kann es zu Rissbildungen im Kunststoff und zu Ablösungen an den Grenzflächen der beiden unterschiedlichen Materialien kommen. Nach längerer Betriebszeit kann das zum Verlust der Dichtigkeit des Laugenbehälters und zum Lockerwerden des Lagerkreuzes in der Stirnseitenwand führen.The forces acting on the bearing cross are so great that the bearing cross can deform. Furthermore, cracking in the plastic and detachment at the interfaces of the two different materials can occur. After a long period of operation, this can lead to the loss of the tightness of the tub and to the loosening of the bearing cross in the front wall.
Ein weiteres Problem besteht darin, dass der Kunststoff im Inneren des Materials unterschiedlich abkühlt als an der Grenzfläche des Lagerkreuzes. Als Folge bilden sich Mikrolücken zwischen dem Kunststoff und dem Lagerkreuz, was die Verbindung zwischen den Materialien verschlechtert und zu Rissbildungen führen kann.Another problem is that the plastic in the interior of the material cools differently than at the interface of the bearing cross. As a result, micro gaps form between the plastic and the bearing cross, which deteriorates the bond between the materials and can lead to cracking.
Alternativ zu den beschriebenen Kunststofflaugenbehältern mit dem in der Stirnseitenwand integrierten Lagerkreuz, sind Laugenbehälter entwickelt worden, deren Stabilisierungsmittel aus Kunststoff bestehen. In der
Die Rippen sind Bestandteil der Stirnseitenwand, sie werden bei deren Herstellung durch Spritzgießen mit eingeformt. Das metallische Lagerkreuz als zusätzliches Bauteil entfällt. Durch die dadurch mögliche Vereinheitlichung der Technologie ergeben nicht unerhebliche Rationalisierungspotentiale, die Herstellung des Laugenbehälters ist mit einem technisch und wirtschaftlich erheblich verringerten Aufwand möglich.The ribs are part of the front wall, they are molded during their manufacture by injection molding. The metallic bearing cross as an additional component is eliminated. Due to the possible unification of the technology resulting not insignificant rationalization potential, the production of the tub is possible with a technically and economically significantly reduced effort.
Bekannt sind auch Laugenbehälter, die im Bereich der Stirnseitenwand zusätzlich zu den radialen Verstärkungsrippen mäander-, stem-, oval-, kreis- oder kugelförmig eingeformte Entlastungsprofile aufweisen. Die Profile sind so gestaltet, dass sie für Kraftverläufe mehrerer Richtungen gut geeignet sind.Lye containers are also known which, in addition to the radial reinforcing ribs, have meandering, stem, oval, circular or spherical shaped relief profiles in the region of the end wall. The profiles are designed in such a way that they are well suited for force courses of several directions.
Derartige Laugenbehälter weisen gegenüber dem zuvor genannten Beispiel eine höhere Festigkeit auf. Nachteilig wirkt sich bei diesen Laugenbehältern aus, das es in den Kreuzungsbereichen der verschiedenen Entlastungsprofile zu Materialhäufungen kommt, die aufgrund der bereichsweise unterschiedlichen Temperaturgradienten bewirken, dass das Material nach dem Spritzgießen unterschiedlich schrumpft. Die Folge sind Materialspannungen innerhalb der Stirnseitenwand mit der daraus resultierenden Gefahr, dass es zu Rissbildungen im Material kommen kann und nach längerer Betriebszeit dazu, dass der Laugenbehälter undicht wird.Such tubs have a higher strength compared to the aforementioned example. A disadvantage of these lye containers, which comes in the crossing regions of the various relief profiles to material clusters, which cause due to the partially different temperature gradients that the material shrinks differently after injection molding. The result is material stresses within the front wall with the resulting risk that there may be cracks in the material and after a long period of operation that the tub is leaking.
In der Praxis zeigt sich nun, dass die beschriebenen bekannten Konstruktionen von Laugenbehältern mit Stabilisierungsmittel aus Kunststoff für größere Beladungsmengen und sehr hohe Schleuderdrehzahlen nicht oder nur eingeschränkt einsetzbar sind.In practice, it now appears that the described constructions of tubs described with plastic stabilizer for larger loading and very high spin speeds are not or only partially used.
Die Festigkeit eines derartig konstruierten Laugenbehälters an erhöhte Anforderungen anzupassen ist begrenzt. Die Festigkeit des Laugenbehälters kann bis zu einem gewissen Grade gesteigert werden, indem man die Materialstärke der Stirnseitenwand und / oder die darin eingeformten Stabilisierungsmittel höher und stärker auslegt. Dieser Möglichkeit der extensiven Verstärkung der Stirnseitenwand des Laugenbehälters sind relativ enge Grenzen gesetzt, da es mit einer Verstärkung der Stirnseitenwand und der Entlastungsprofile zu Materialhäufungen kommt, die wie beschrieben zu Spannungen und Rissbildungen führen können und daher zu vermeiden sind.The strength of such a designed tub to adapt to increased requirements is limited. The strength of the tub may be increased to some extent by making the thickness of the end wall and / or the stabilizers molded therein higher and stronger. This possibility of extensive reinforcement of the end wall of the tub are set relatively narrow limits, as it comes with a reinforcement of the end wall and the relief profiles to material clusters, which can lead to stress and cracking as described and are therefore to be avoided.
Die Laugenbehälter durch Verwendung festerer Kunststoffe eine erhöhte Festigkeit zu verleihen, ist aus wirtschaftlichen Gründen nicht geboten, da festere Kunststoffe den Laugenbehälter wesentlich verteuern.The lye container by using stronger plastics to give increased strength is not necessary for economic reasons, since firmer plastics significantly increase the cost of the tub.
Bei den modernen Maschinen mit Schleudergeschwindigkeiten der Drehtrommel über 1500 Umdrehungen und einer Beladung von mehr als 8 kg ist mit den bekannten Konstruktionen von Laugenbehältern, die ausschließlich aus Kunststoff gefertigt sind, eine ausreichende Festigkeit für die starken und komplizierten Biege- und Drehbelastungen nicht erreichbar.In the modern machines with spinning speeds of the rotary drum over 1500 revolutions and a load of more than 8 kg is with the known constructions of tubs, which are made exclusively of plastic, sufficient strength for the strong and complicated bending and rotational loads can not be achieved.
Dem Trend zu immer höheren Schleuderdrehzahlen und höherer Trommelbeladung folgend, steigen die Anforderungen an die Stabilität des Laugenbehälters, was die Einsatzmöglichkeit für die bekannten Laugenbehälter weiter einengt.Following the trend towards ever higher spin speeds and higher drum loading, the requirements for the stability of the tub, which further narrows the use of the known tubs.
Ausgehend vom genannten Stand der Technik, liegt der Erfindung die Aufgabe zugrunde, einen konstruktiv verbesserten Laugenbehälter für Waschmaschinen oder Trockner vorzuschlagen, der die genannten funktionalen Leistungen in hohem Maße gewährleistet, wirtschaftlich herstellbar ist, und für alle Waschmaschinentypen insbesondere für Frontlader geeignet ist.Based on the cited prior art, the invention has for its object to propose a structurally improved tub for washing machines or dryers, which ensures the above-mentioned functional services to a high degree, is economical to produce, and is suitable for all types of washing machine especially for front loader.
Erfindungsgemäß wird die Aufgabe durch die im Patentanspruch 1 aufgeführten Merkmale gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den jeweils nachfolgenden Unteransprüchen angegeben, deren Merkmale einzeln oder in beliebiger Kombination miteinander oder mit den Merkmalen des Patentanspruches 1 angewendet werden können.According to the invention the object is achieved by the features listed in
Der nach Maßgabe der vorliegenden Erfindung gestaltete Laugenbehälter zeichnet sich dadurch aus, dass als Mittel zur Verstärkung des Laugenbehälters in die Stirnseitenwand radial ausgerichtete Rippen eingeformt sind, die an der Lageraufnahme beginnend sich entlang ihrer radialen Erstreckung verzweigen in einer dem Y ähnelnde Form.The designed in accordance with the present invention lye container is characterized in that are formed as means for reinforcing the tub in the end wall radially oriented ribs, which branch on the bearing receptacle starting along its radial extent in a Y-like shape.
Um die stabilisierende Wirkung der sich verzweigenden radialen Rippen zu erhöhen, sind in zweckmäßiger Ausgestaltung der Erfindung die Verzweigungspunkte bzgl. ihres radialen Abstandes zur Lageraufnahme unterschiedlich angeordnet und sind in einer weiteren Ausgestaltung der Erfindung die Rippen entlang ihrer radialen Erstreckung mehrfach verzweigt. Die Verstärkungsrippen sind gleichmäßig beabstandet und die Verzweigungen der Verstärkungsrippen symmetrisch ausgerichtet.In order to increase the stabilizing effect of the branching radial ribs, in an advantageous embodiment of the invention, the branch points are arranged differently with respect to their radial distance to the bearing receptacle and in a further embodiment of the invention, the ribs are multi-branched along their radial extent. The reinforcing ribs are evenly spaced and the branches of the reinforcing ribs are symmetrically aligned.
Mit der vorgeschlagenen Konstruktion ist es möglich eine große Anzahl radial ausgerichteter Rippen in die Stirnseitenwand einzuformen, ohne dass Materialhäufungen auftreten. Die verzweigten radialen Rippen bewirken eine direkte und über die fläche der Stirnseitenwand gleichmäßig verteilte Krafteinleitung von der Lageraufnahme zum Rand der Stirnseitenwand.With the proposed construction, it is possible to mold a large number of radially aligned ribs in the end wall, without material clusters occur. The branched radial ribs cause a direct and uniform over the surface of the end wall evenly distributed force from the bearing receptacle to the edge of the end wall.
Der erfindungsgemäße Laugenbehälter war im Dauerversuch unter Praxisbedingungen bisher bekannten Konstruktionen überlegen. Der Laugenbehälter ist robust genug, um den mechanischen Beanspruchungen standzuhalten, die bei modernen Waschmaschinen während des Betriebs von der Wäschetrommel auf den Laugenbehälter übertragen werden.The tub according to the invention was superior in the endurance test under practical conditions previously known constructions. The tub is robust enough to withstand the mechanical stresses that are transferred from the washing drum to the tub in modern washing machines during operation.
In weiterer Ausgestaltung der Erfindung ist vorgesehen in Abhängigkeit von der Anzahl und vom gegenseitigen Abstand der radialen Rippen die Höhe, die Breite und / oder die Wandstärke der Verstärkungsrippen sowie die Wandstärke der Stirnseitenwand aufeinander abgestimmt derart auszulegen, dass die Festigkeit der Stirnseitenwand vom Rand zum Lagergehäuse gleichmäßig zunimmt.In a further embodiment of the invention is provided depending on the number and the mutual distance of the radial ribs, the height, the width and / or the wall thickness of the reinforcing ribs and the wall thickness of the end wall matched to one another interpreted such that the strength of the end wall from the edge to the bearing housing increases evenly.
Daraus ergibt sich der wesentliche Vorteil, unter Berücksichtigung eines effektiven Materialeinsatzes für jede Trommelgröße einen Laugenbehälter mit der für jeden Einsatzfall erforderlichen mechanischen Festigkeit herstellen zu können.This results in the significant advantage, taking into account an effective use of material for each drum size to be able to produce a tub with the required mechanical strength for each application.
In einer weiteren Ausgestaltung der Erfindung sind in die Stirnseitenwand zusätzlich zu den radialen Verstärkungsrippen Querrippen eingeformt, wobei die Knotenpunkte von den radialen Verstärkungsrippen und den Querrippen auf einer Kreislinie konzentrisch zum Lagergehäuse liegend angeordnet sind, d.h. vom Lagergehäuse gleich beabstandet sind. Zwischen den einzelnen Knotenpunkten sind die Querrippen vorteilhafterweise geradlinig ausgeführt. Mit den zusätzlichen Querrippen können verbessert die Biegespannungen aufgenommen werden.In a further embodiment of the invention transverse ribs are formed in the end wall in addition to the radial reinforcing ribs, wherein the nodes of the radial reinforcing ribs and the transverse ribs are arranged lying on a circular line concentric with the bearing housing, ie are equally spaced from the bearing housing. Between the individual nodes, the transverse ribs are advantageously designed in a straight line. The additional transverse ribs can improve the bending stresses be recorded.
Fertigungstechnisch ergeben sich bei der Umsetzung der Erfindung keine Probleme. Durch die veränderte Konstruktion muss der Arbeitsablauf bei der Herstellung des Laugenbehälters nicht verändert werden. Der mit der Erfindung verbundene zusätzliche Aufwand beschränkt sich auf die veränderte Formgestaltung der Spritzform. Spezielle Anpassungen oder Werkzeuge sind nicht erforderlich.Manufacturing technology, no problems arise in the implementation of the invention. Due to the modified construction, the work flow during production of the tub does not have to be changed. The additional expense associated with the invention is limited to the changed shape of the mold. Special adjustments or tools are not required.
Nachstehend werden Ausführungsbeispiele der Erfindung unter Bezugnahme auf die nachfolgend aufgeführten Zeichnungen näher erläutert. Dargestellt sind in
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Fig. 1 bis 3 : drei Ausführungsformen der Stirnseitenwand in Draufsicht von hinten, -
Fig. 4 : eine Stirnseitenwand mit Querrippen, -
Fig. 5 : eine Stirnseitenwand in Schnittdarstellung entlang der TrommelachseFig. 1 zeigt eine Stirnseitenwand 3 desLaugenbehälters 1 in der einfachsten Form.Die Radialrippen 4 sind entlang ihrer radialen Erstreckung einfach verzweigt, symmetrisch ausgeführt und haben eine dem Y ähnelnde Form.Alle Verzweigungspunkte 5 sindvon der Lageraufnahme 2 gleich beabstandet. Durch den Y-förmigen Übergang sind alle Radialrippen 4 direktmit der Lageraufnahme 2 d.h. mit der Lasteinleitungsstelle verbunden. Die direkte Verbindung zur Lageraufnahme 2 gestattet eine effektive Krafteinleitung, Spannungs- und Steifigkeitssprünge werden vermieden.
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Fig. 1 to 3 : three embodiments of the front wall in plan view from behind, -
Fig. 4 an end wall with transverse ribs, -
Fig. 5 a front side wall in a sectional view along the drum axisFig. 1 shows anend wall 3 of thetub 1 in the simplest form. Theradial ribs 4 are simply branched along their radial extent, symmetrical and have a shape similar to the Y. All branch points 5 are equally spaced from thebearing seat 2. Due to the Y-shaped transition, allradial ribs 4 are connected directly to the bearingreceptacle 2, that is, to the load introduction point. The direct connection to thebearing holder 2 allows an effective force introduction, voltage and stiffness jumps are avoided.
Eine alternative Form der Stirnseitenwand 3 ist in
Die beiden in
In
In
In dieser zweckmäßigen Ausführungsform ist die Stärke der Stirnseitenwand 3, kenntlich gemacht durch die gestrichelte Linie, am Rand geringer als im Bereich der Lageraufnahme 2 ausgebildet. Die Stärke der Stirnseitenwand 3 zu variieren, ist ein weiteres Mittel die Festigkeit des Laugenbehälters bereichsweise in der gewünschten Weise anzupassen.In this expedient embodiment, the thickness of the
- 1.1.
- Laugenbehälter / MantelflächeLye container / lateral surface
- 2.Second
- Lageraufnahmebearing seat
- 3.Third
- StirnseitenwandEnd wall
- 4.4th
- Verstärkungsrippenreinforcing ribs
- 5.5th
- Verzweigung / VerzweigungspunkteBranching / branching points
- 6.6th
- Querrippentransverse ribs
- 7.7th
- Kreisliniecircle line
- 8.8th.
- Einformung / AbsatzMolding / sales
- 9.9th
- Achse der WäschetrommelAxle of the laundry drum
Claims (11)
- Plastics material solution container (1) for a washing machine, particularly for a washing machine with a front opening for loading and unloading the appliance with articles to be washed, wherein the solution container (1) consists of a cylindrical casing (1) and of at least one end wall (3), which closes the cylindrical casing (1) and which has a bearing mount (2) for the shaft of the laundry drum rotatable in the solution container (1), and means (4) for stabilisation of the solution container (1) are integrally formed, characterised in that radially oriented reinforcing ribs (4), which beginning at the bearing mount (2) branch at least once along the radial extent thereof, are integrally formed in the end wall (3) as means (4) for reinforcing the solution container (1).
- Plastics material solution container (1) according to claim 1, characterised in that the branchings (5) of the reinforcing ribs (4) are of symmetrical construction in such a manner that the reinforcing ribs have a form along the radial extent thereof similar to a Y.
- Plastics material solution container (1) according to claim 1, characterised in that the branching points (5) of the reinforcing ribs (4) are arranged to lie on a circular line (7) concentric with the bearing mount (2).
- Plastics material solution container (1) according to claim 1, characterised in that the reinforcing ribs (4) are symmetrically oriented and uniformly spaced.
- Plastics material solution container (1) according to claim 1, characterised in that the reinforcing ribs (4) have multiple branching along the radial extent thereof.
- Plastics material solution container (1) according to claim 1, characterised in that the branching points (5) of the reinforcing ribs (4) are arranged to lie on two or more circular lines (7) concentric with the bearing mount (2).
- Plastics material solution container (1) according to claim 1, characterised in that the height, width and/or wall thickness of the reinforcing ribs (4) as well as the wall thickness of the end wall (3) are designed to be matched to one another in such a manner that the strength of the end wall (3) increases uniformly from the edge to the bearing mount (2).
- Plastics material solution container (1) according to claim 1, characterised in that transverse ribs (6) connecting the reinforcing ribs (4) are integrally formed in the end wall (3), wherein the individual transverse ribs (6) form a ring closed in itself.
- Plastics material solution container (1) according to claim 1, characterised in that the junction points of the reinforcing ribs (4) and the transverse ribs (6) are arranged to lie on a circular line (7) concentric with the bearing mount (2).
- Plastics material solution container (1) according to claim 1, characterised in that the individual sections of the transverse ribs (6) are formed to be rectilinear between the reinforcing ribs (4).
- Plastics material solution container (1) according to claim 1, characterised in that a plurality of transverse ribs (6), which have different spacings from the bearing mount (2) and the junction points thereof with the reinforcing ribs (4) are respectively arranged on a circular line (7) concentric with the bearing mount (2), is integrally formed in the end wall (3).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL08803700T PL2203583T3 (en) | 2007-09-20 | 2008-09-05 | Plastic tub for a washing machine or a washer dryer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007044883A DE102007044883A1 (en) | 2007-09-20 | 2007-09-20 | Plastic tub for a washing machine or a washer-dryer |
PCT/EP2008/061730 WO2009040231A1 (en) | 2007-09-20 | 2008-09-05 | Plastic tub for a washing machine or a washer dryer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2203583A1 EP2203583A1 (en) | 2010-07-07 |
EP2203583B1 true EP2203583B1 (en) | 2012-08-15 |
Family
ID=40050570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08803700A Active EP2203583B1 (en) | 2007-09-20 | 2008-09-05 | Plastic tub for a washing machine or a washer dryer |
Country Status (7)
Country | Link |
---|---|
US (2) | US8485002B2 (en) |
EP (1) | EP2203583B1 (en) |
CN (1) | CN101802289B (en) |
DE (1) | DE102007044883A1 (en) |
EA (1) | EA016604B1 (en) |
PL (1) | PL2203583T3 (en) |
WO (1) | WO2009040231A1 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102009044574B3 (en) * | 2009-11-18 | 2011-02-17 | Miele & Cie. Kg | Plastic container for a washing machine |
DE102010044190A1 (en) | 2010-11-19 | 2012-05-24 | BSH Bosch und Siemens Hausgeräte GmbH | Lye container for receiving a rotatably mounted laundry drum and laundry treatment machine |
CN106835615B (en) * | 2013-12-02 | 2019-08-20 | 林向亮 | Anti-wear washing machine |
CN103643453B (en) * | 2013-12-02 | 2018-12-18 | 绍兴金楚印染有限公司 | Anti-wear upper opening cleaning-drum |
CN109338669B (en) * | 2013-12-02 | 2019-09-17 | 江苏惠庆电器科技有限公司 | Anti-wear top-loading washing machine |
KR102418217B1 (en) * | 2015-08-26 | 2022-07-08 | 삼성전자주식회사 | Washing machine |
CN105483976B (en) * | 2015-12-04 | 2018-10-30 | 无锡小天鹅股份有限公司 | The bucket bottom of rotary drum washing machine |
US10326323B2 (en) | 2015-12-11 | 2019-06-18 | Whirlpool Corporation | Multi-component rotor for an electric motor of an appliance |
US10704180B2 (en) | 2016-09-22 | 2020-07-07 | Whirlpool Corporation | Reinforcing cap for a tub rear wall of an appliance |
US10487435B2 (en) | 2017-03-23 | 2019-11-26 | Midea Group Co., Ltd. | Tub for a laundry washing machine |
US10975513B2 (en) | 2017-03-23 | 2021-04-13 | Midea Group Co., Ltd. | Tub with bearing housing insert for a laundry washing machine |
DE202017002222U1 (en) | 2017-04-27 | 2017-06-27 | MULTIPOND Wägetechnik GmbH | grid flap |
US10693336B2 (en) | 2017-06-02 | 2020-06-23 | Whirlpool Corporation | Winding configuration electric motor |
TR201819632A2 (en) | 2018-12-18 | 2020-07-21 | Arcelik As | LAUNDRY WASHER-DRYER WITH BOILER WITH INCREASED MECHANICAL RESISTANCE |
US10988885B2 (en) * | 2018-12-28 | 2021-04-27 | Whirlpool Corporation | Extended tub for a laundry treating appliance |
TR202013260A2 (en) | 2020-08-21 | 2022-03-21 | Arçeli̇k Anoni̇m Şi̇rketi̇ | Washing Machine with a Tub with Feds |
US20230064111A1 (en) * | 2021-08-30 | 2023-03-02 | Whirlpool Corporation | Structured geometry for a tub rear wall of a laundry appliance |
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CH474587A (en) * | 1968-09-02 | 1969-06-30 | Menziken Aluminium Ag | Warp beam disc |
BE815544A (en) * | 1973-09-12 | 1974-09-16 | COIL FOR MATERIALS IN THE FORM OF STRINGS | |
US4140828A (en) * | 1975-06-10 | 1979-02-20 | Conlor Molding Systems Limited | Injection moulded plastics article |
GB2157326A (en) | 1984-04-13 | 1985-10-23 | Philips Electronic Associated | Wash tub |
US4744283A (en) * | 1986-03-17 | 1988-05-17 | Esperanza Y Cia, S.A. | Mortar |
SU1440928A1 (en) * | 1986-11-18 | 1988-11-30 | Петропавловский Кожевенный Завод Им.Октябрьской Революции | Drum for liquid treatment of hides |
JPH0696069B2 (en) * | 1989-03-28 | 1994-11-30 | 三洋電機株式会社 | Washing machine |
IT225670Y1 (en) * | 1991-11-27 | 1997-01-13 | Zanussi Elettrodomestici | PERFECTED PLASTIC TANK |
DE4337631A1 (en) * | 1993-11-04 | 1995-05-11 | Kloeckner Humboldt Deutz Ag | Protective device for a blower of an internal combustion engine |
DE9415460U1 (en) * | 1994-09-23 | 1995-07-20 | Siemens Ag | Gear drive, in particular worm gear |
IT1289395B1 (en) * | 1996-10-08 | 1998-10-02 | Electrolux Zanussi Elettrodome | PERFECTED PROCESS FOR INJECTION MOLDING OF PLASTIC PRODUCTS |
IT245289Y1 (en) * | 1998-01-20 | 2002-03-20 | Electrolux Zanussi Elettrodome | PERFECTED PLASTIC TANK FOR WASHING MACHINE AND SIMILAR |
US6708824B2 (en) * | 2001-11-16 | 2004-03-23 | Southwest Agri-Plastics, Inc. | Stackable and nestable container |
US7395684B2 (en) * | 2002-05-17 | 2008-07-08 | Umud Esat Ozturk | Drum |
ES2242470B1 (en) * | 2002-11-06 | 2007-02-01 | Bsh Electrodomesticos España, S.A. | PLASTIC CUBE FOR DOMESTIC WASHERS. |
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DE202004012221U1 (en) | 2004-08-04 | 2004-09-30 | BSH Bosch und Siemens Hausgeräte GmbH | A washing machine or tumble drier with a holder, a rotating loaded drum, an elastic seal, and a rigid one piece washing deflector generally useful for washing operations |
DE102004048556B4 (en) * | 2004-10-04 | 2008-06-05 | Miele & Cie. Kg | Lye container for a washing machine |
DE102005018190B3 (en) | 2005-04-19 | 2006-08-24 | Miele & Cie. Kg | Injection molded plastics tub for washing machine, has metallic mounting cross for receiving drive shaft bonded into the plastics and strength increasing binding seam formed by directing injected melt flow |
DE102005045178B3 (en) * | 2005-09-21 | 2006-10-12 | Miele & Cie. Kg | Plastics drum assembly, for a front loading horizontal drum washing machine, has a metal hub bonded into the plastics mass with embedded reinforcement fiber strands extending radially from the hub to the end wall |
DE102005046010B3 (en) * | 2005-09-26 | 2006-10-12 | Miele & Cie. Kg | Plastic drum housing for washing machine includes fiber mat reinforcement to cover the region in the end wall supporting the drum bearing hub |
DE102005054968B3 (en) * | 2005-11-16 | 2006-11-02 | Miele & Cie. Kg | Plastic leach container for washing machines or driers having a support ring with a circumference in a plastic free area |
-
2007
- 2007-09-20 DE DE102007044883A patent/DE102007044883A1/en not_active Withdrawn
-
2008
- 2008-09-05 EP EP08803700A patent/EP2203583B1/en active Active
- 2008-09-05 US US12/677,120 patent/US8485002B2/en not_active Expired - Fee Related
- 2008-09-05 WO PCT/EP2008/061730 patent/WO2009040231A1/en active Application Filing
- 2008-09-05 CN CN2008801067887A patent/CN101802289B/en active Active
- 2008-09-05 EA EA201070364A patent/EA016604B1/en not_active IP Right Cessation
- 2008-09-05 PL PL08803700T patent/PL2203583T3/en unknown
-
2013
- 2013-05-30 US US13/905,250 patent/US9376767B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2009040231A1 (en) | 2009-04-02 |
US9376767B2 (en) | 2016-06-28 |
PL2203583T3 (en) | 2013-01-31 |
US20130255328A1 (en) | 2013-10-03 |
EA016604B1 (en) | 2012-06-29 |
EA201070364A1 (en) | 2010-10-29 |
US8485002B2 (en) | 2013-07-16 |
EP2203583A1 (en) | 2010-07-07 |
US20100186462A1 (en) | 2010-07-29 |
DE102007044883A1 (en) | 2009-04-09 |
CN101802289B (en) | 2011-12-21 |
CN101802289A (en) | 2010-08-11 |
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