EP1918445A1 - Tub with ballast weight for a washing machine - Google Patents

Tub with ballast weight for a washing machine Download PDF

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Publication number
EP1918445A1
EP1918445A1 EP07033518A EP07033518A EP1918445A1 EP 1918445 A1 EP1918445 A1 EP 1918445A1 EP 07033518 A EP07033518 A EP 07033518A EP 07033518 A EP07033518 A EP 07033518A EP 1918445 A1 EP1918445 A1 EP 1918445A1
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EP
European Patent Office
Prior art keywords
ballast weight
opening
container
screw
lye container
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Granted
Application number
EP07033518A
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German (de)
French (fr)
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EP1918445B1 (en
Inventor
Matthias Hollenhorst
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Miele und Cie KG
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Miele und Cie KG
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Publication of EP1918445A1 publication Critical patent/EP1918445A1/en
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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
    • D06F37/265—Counterweights mounted to the tub; Mountings therefor

Definitions

  • the invention relates to a tub for a drum washing machine with at least one fastened by screw ballast weight, which is designed as a ring segment and is pressed onto support areas on the container wall, wherein at least three elongated pins are formed for the screw on the container wall, each in a corresponding elongated Projecting opening in the ballast weight, wherein the pins are aligned in the longitudinal direction of the respective corresponding opening.
  • Such a tub is from the DE 102 15 254 A1 known.
  • fastening elements and domes or pins are formed on the end wall.
  • the fasteners and domes protrude into corresponding recesses or openings in the ballast weight, wherein the ballast weight rests on the end wall and wherein the recesses closely surround the lateral border of the projecting fasteners.
  • the weight is connected through corresponding openings by means of connecting means with the tub.
  • it is necessary that the contour of the openings in the weight are carried out very accurately and with high dimensional accuracy, so that the positive connection between the opening and dome is achieved and the weight does not rattle or vibrate in operation relative to the container wall.
  • a tub known in which on the end walls dome or pins are formed, which protrude into openings in the ballast weight.
  • the domes are each provided with an axial bore into which a screw is screwed, which presses with its screw head the ballast weight against the support area.
  • the opening in the ballast weight is covered with a spring plate, which provides a biasing force on the ballast weight after screwing the screw.
  • relaxing is unavoidable in the contact area, as a result of which the prestressing force gradually decreases. At higher weights or larger imbalances, the ballast weight can loosen and in the worst case solve.
  • ballast weight has a conical passage opening, which is slipped over a pin on the tub wall.
  • a conical or wedge-shaped part which presses the walls of the pin outwardly against the inner periphery of the passage opening of the ballast weight. Due to the spreading apart of the walls, which then nestle against the conical passage opening, the ballast weight is fixed to the container wall.
  • the invention is therefore an object of the invention to provide a plastic tub with a simple and improved attachment for at least one ballast weight.
  • ballast weight in each case at least partially a cavity remains between the pin and the opening, whereby a positioning of the ballast weight on the container wall is made possible.
  • the ballast weight can be displaced laterally before fastening to a limited extent relative to the container wall, whereby manufacturing tolerances are compensated in a simple manner.
  • quite large tolerances for the ballast weight and the openings can be allowed.
  • This is particularly advantageous in ballast weights made of concrete or a metal casting, since in this case an accurate dimensional accuracy of the openings with respect to the position would not be possible or only with great effort.
  • the ballast weight When attaching the ballast weight on the front side of the layer container, it is expedient to perform the ballast weight as a ring segment.
  • the elongated openings at the outer, lateral ends are horizontal and the opening in the region of the apex is vertically aligned.
  • the directional information refers to the operational position of the tub in the washing machine. As a result, each pin reaches the intended opening, wherein slight displacements of the ballast weight before the final tightening of the screws are still possible.
  • the longitudinal sides of the pins bear on the respective inner wall of the opening, whereby a force distribution is achieved or the surface pressure is reduced.
  • the combination of the horizontal and vertical alignment of the elongated pins and openings provides a good tight fit with simultaneous tolerance compensation.
  • an annular or circumferential, elastic element is used in the cavity between the pin and the opening, which at least partially fills the cavity. This will ensure a durable and safe investment of the ballast weight achieved, whereby possible relative movements between ballast weight and lye container wall can be avoided.
  • the elastic element fills the cavity along the long sides of the elongated opening in the ballast weight. Since cavities still remain in the region of the short sides of the opening, some material of the elastic element can spread there. For attachment, a large biasing force, which is provided by the tightening, no longer necessary, whereby the container wall is not heavily loaded in the support area. As a result, the service life is increased and possible cracks due to excessive stresses or strains are avoided.
  • the sleeve consists of an elastomer or rubber material which has a hardness in the range between 40 to 80 ShoreA. With this hardness, on the one hand, a limited deformability is achieved, which provides a sufficient frictional resistance in the contact area. On the other hand, the material for a stable attachment is hard enough so that, in particular, no relative movements between ballast weight and container wall occur in particular during operation of the washing machine.
  • At least one fastening tab is integrally formed on an end wall of the tub, on which the fastening pin extends from the plane of the end wall pioneering.
  • the attachment can be performed regardless of the circumstances of the container wall.
  • the fastening strap can be made with a higher material thickness to better withstand the stresses.
  • a circumferential shoulder is arranged in an expedient embodiment around the at least one opening in the ballast weight, on which rests a circumferential collar of the elastic element, wherein a disc is arranged between the screw and the collar is who presses the collar on the heel.
  • the disk for receiving the screw in the central region has an elongated opening which extends in the longitudinal direction to the opening in the ballast weight.
  • the screw can be screwed in a fixed predetermined position on the container wall, wherein the position in the disc is not fixed, whereby a tolerance compensation or a change in position of the ballast weight in the longitudinal direction of this opening is made possible.
  • a washing machine 8 is sketched with a tub 1 in a side view as a section.
  • the tub 1 consists at least of a cylindrical shell 2, which surrounds a drum 3.
  • the cylindrical shell 2 is closed by at least one rear bottom wall 6a.
  • a hub 4 is integrated, which receives the drive shaft 5 for driven by a motor 12 drum 3.
  • the front end wall 6 is provided with a loading opening 7 which can be closed by a door 9.
  • Ballastpetite 10, 11 are attached.
  • the tub 1 is shown in a perspective view from the front.
  • the ballast weights 11 are arranged on the outside on the front end wall 6, wherein they are arcuately formed as a partial circular ring and outside follow approximately the course of the shell 2 and the inside the loading opening 7 free.
  • the weights 11 are screwed to the end wall 6, in which case the attachment to fastening tabs 14 takes place, which are integrally formed on the end wall 6 and / or on the jacket 2.
  • Elongated openings 16, 16a, 16b are provided for the screws, the outer openings 16, 16a being substantially horizontal and the opening 16b being vertically aligned in the apex region 27, based on the operational position of the washing machine. This arrangement allows a very good tolerance compensation.
  • Fig. 3 the attachment of the ballast weight 11 is sketched in detail.
  • a pin 15 (not shown) integrally formed, which rises from the plane of the tab 14.
  • the ballast weight 11 has an opening 16 into which the pin 15 projects from the wall side. With the help of the screw 13 and an underlaid disc 21, the ballast weight 11 is pressed against the container wall 6 and the tab 14.
  • the opening 16 and the patch disc 21 are elongated, wherein the elongated opening 26 in the disc 21 provides a tolerance compensation for the screw fastening.
  • Fig. 4 the mounting portion is sketched in an exploded view.
  • a pin 15 is formed on the end wall 6 or on the level of the tab 14.
  • This pin 15 is elongated or oval in shape and extends substantially in the direction of the corresponding opening 16 in ballast weight 11.
  • an annular elastic member 19 is slipped, wherein it is not flush on the short sides of the elongated pin 15.
  • the elastic element 19 can be inserted into the opening 16 in the ballast weight 11, being held at the ballast weight with the encircling collar 23 (FIG. 4a). Subsequently, the equipped with the elastic elements ballast weight 11 is placed on the pins 15.
  • the ballast weight 11 is arranged on the end wall 6 so that the pin 15 projects with the elastic element 19 in the elongated opening 16.
  • the long sides of the inner wall 28 of the opening 16 are flush and / or under pressure on the elastic member 19, wherein the short sides form a gap or only loosely on the elastic member 19 or a gap 18 (Fig. 5a) between the elastic Form element 19 and the pin 15.
  • a positioning or fixing in the direction C is achieved, wherein in the longitudinal direction L of the opening 16, a shift is possible.
  • the screw 13 is inserted through the opening 16 of the ballast weight 11 in the opening 31 with the interposition of the disc 21 and screwed into the nut (not shown).
  • Fig. 5a the fixed ballast weight 11 in a detailed sectional view along the section line B-B (Fig. 3) is sketched.
  • the screw 13 By tightening the screw 13, which is screwed into a nut 20 on the opposite side of the tab 14, the ballast weight 11 is pressed against the contact area 17 on the container wall 6 and on the tab 14. From the plane of the tab 14, the pin 15 rises, which projects into the opening 16 of the ballast weight 11.
  • the elastic sleeve 19 is located in the cavity 18 on the inner wall 28 of the opening 16, wherein the cavity 18 between the pin 15 and the inner wall 28 of the opening 16 is only partially filled by the sleeve 19.
  • a circumferential collar 23 is formed, which is directed radially outward and rests on a peripheral shoulder 24 of the ballast weight 11.
  • the flat portion 22 of the ring 19 is slightly compressed and pressed the circumferential collar 23 on the ballast weight 11 and on the shoulder 24. Due to the resilience of the collar 23, the ballast weight 11 is pressed with a limited force against the contact area 17 on the container wall 6 and tab 14, whereby a reliable and permanent tight fit of the ballast weight 11 is achieved.
  • FIG. 5b shows the ballast weight 11 in a sketched sectional view along the section line AA (FIG. 3).
  • the cavity 18 between the pin 15 and the inner wall 28 of the opening 16 is almost completely filled, wherein the flat portion 22 of the ring 19 both is applied to the pin 15 and on the inner wall 28 of the opening 16 and is compressed within the cavity 18.
  • Fig. 6 shows an embodiment of the sleeve 19, in which on the end facing the container wall 6, a further peripheral, outwardly directed collar 25 is formed, which is located between ballast 11 and container wall 6 and the support 17 provides for the ballast weight 11.
  • This collar 25 causes an intermediate friction increased resistance between ballast weight 11 and container wall 6, whereby lateral relative movements of the ballast weight 11 can be avoided. Due to the increased frictional resistance of the collar 25 of the interference fit is further improved, the ballast weight 11 does not have to be pressed so firmly against the support surface of the end wall 6 or tab 14. As a result, the relaxation behavior in the plastic in the attachment or the support 17 is largely avoided. This provides a reliable attachment for all operating situations that occur over the entire service life of the washing machine 8 (FIG. 1).
  • Fig. 7 shows a further embodiment in which the nut 20 to the tab 14 towards angled segments 30 includes, which are partially passed through openings 29 in the tab 14. The free end of these segments 30 forms the support 17 for the ballast weight 11.
  • the screw 13 can be very tightened because the ballast weight 11 is no longer pressed with its support portion 17 on the plastic of the container wall 6 and tab 14 and therefore can not press into the plastic.

Abstract

The washing solution tub (1) for a drum-type washing machine has a ballast weight (11) which includes an elongated opening at least on the outer side ends and in the region of the apex (27). In the operating position of the washing solution tub, the openings (16a) on the outer side ends of the ballast weight are orientated horizontally, and the opening (16b) in the region of the apex is orientated vertically. A cavity between each spigot formed on the tub wall (6) and the respective opening enables positioning of the ballast weight on the tub wall.

Description

Die Erfindung betrifft einen Laugenbehälter für eine Trommelwaschmaschine mit zumindest einem mittels Schraubverbindung befestigten Ballastgewicht, welches als Ringsegment ausgeführt ist und auf Auflagebereiche an der Behälterwand angedrückt wird, wobei für die Schraubverbindung an der Behälterwand zumindest drei längliche Zapfen angeformt sind, die jeweils in eine korrespondierende längliche Öffnung im Ballastgewicht ragen, wobei die Zapfen in Längsrichtung der jeweils korrespondierenden Öffnung ausgerichtet sind.The invention relates to a tub for a drum washing machine with at least one fastened by screw ballast weight, which is designed as a ring segment and is pressed onto support areas on the container wall, wherein at least three elongated pins are formed for the screw on the container wall, each in a corresponding elongated Projecting opening in the ballast weight, wherein the pins are aligned in the longitudinal direction of the respective corresponding opening.

Ein derartiger Laugenbehälter ist aus der DE 102 15 254 A1 bekannt. Bei diesem Laugenbehälter sind auf der Stirnwand Befestigungselemente und Dome oder Zapfen angeformt. Die Befestigungselemente und Dome ragen in korrespondierende Einbuchtungen bzw. Öffnungen im Ballastgewicht, wobei das Ballastgewicht auf der Stirnwand aufliegt und wobei die Einbuchtungen die seitliche Umrandung der vorspringenden Befestigungselemente eng umschließen. Von der Außenseite her wird das Gewicht durch entsprechende Öffnungen mit Hilfe von Verbindungsmitteln mit dem Laugenbehälter verbunden. Bei dieser Art der Befestigung ist es jedoch notwendig, dass die Kontur der Öffnungen im Gewicht sehr genau und mit hoher Maßhaltigkeit ausgeführt werden, damit die formschlüssige Verbindung zwischen Öffnung und Dom erreicht wird und das Gewicht im Betrieb gegenüber der Behälterwand nicht klappert oder vibriert.Such a tub is from the DE 102 15 254 A1 known. In this tub fastening elements and domes or pins are formed on the end wall. The fasteners and domes protrude into corresponding recesses or openings in the ballast weight, wherein the ballast weight rests on the end wall and wherein the recesses closely surround the lateral border of the projecting fasteners. From the outside, the weight is connected through corresponding openings by means of connecting means with the tub. In this type of attachment, however, it is necessary that the contour of the openings in the weight are carried out very accurately and with high dimensional accuracy, so that the positive connection between the opening and dome is achieved and the weight does not rattle or vibrate in operation relative to the container wall.

Aus der DE 42 38 686 C1 ein Laugenbehälter bekannt, bei dem an den Stirnwänden Dome bzw. Zapfen angeformt sind, die in Öffnungen im Ballastgewicht ragen. Die Dome sind jeweils mit einer axialen Bohrung versehen, in die eine Schraube eingeschraubt wird, die mit ihrem Schraubenkopf das Ballastgewicht gegen den Auflagebereich drückt. Als Auflagebereich sind um die Dome umlaufende Rippen angeformt. Die Öffnung im Ballastgewicht wird mit einem Federteller überdeckt, der nach dem Einschrauben der Schraube eine Vorspannkraft auf das Ballastgewicht bereitstellt. Bei einem Laugenbehälter aus Kunststoff ist im Auflagebereich ein Relaxieren nicht zu vermeiden, wodurch die Vorspannkraft allmählich nachlässt. Bei höheren Gewichten oder größeren Unwuchten kann sich das Ballastgewicht lockern und im schlimmsten Fall lösen.From the DE 42 38 686 C1 a tub known, in which on the end walls dome or pins are formed, which protrude into openings in the ballast weight. The domes are each provided with an axial bore into which a screw is screwed, which presses with its screw head the ballast weight against the support area. As a support area circumferential ribs are formed around the dome. The opening in the ballast weight is covered with a spring plate, which provides a biasing force on the ballast weight after screwing the screw. In the case of a plastic tub, relaxing is unavoidable in the contact area, as a result of which the prestressing force gradually decreases. At higher weights or larger imbalances, the ballast weight can loosen and in the worst case solve.

Aus der EP 0 798 412 A2 ist es bekannt, ein Ballastgewicht an einen Laugenbehälter mittels Spreizdübel zu befestigen. Hierbei hat das Ballastgewicht eine konische Durchgangsöffnung, die über einen Zapfen an der Laugenbehälterwand gestülpt wird. In den hohlen Zapfen wird wiederum ein kegel- oder keilförmiges Teil eingefügt, welches die Wandungen des Zapfens nach außen gegen den Innenumfang der Durchgangsöffnung des Ballastgewichts drückt. Durch das Auseinanderspreizen der Wandungen, die sich dann an die konische Durchgangsöffnung anschmiegen, wird das Ballastgewicht an der Behälterwand fixiert.From the EP 0 798 412 A2 It is known to attach a ballast weight to a tub by means of expansion dowel. Here, the ballast weight has a conical passage opening, which is slipped over a pin on the tub wall. In the hollow cone is in turn inserted a conical or wedge-shaped part which presses the walls of the pin outwardly against the inner periphery of the passage opening of the ballast weight. Due to the spreading apart of the walls, which then nestle against the conical passage opening, the ballast weight is fixed to the container wall.

Der Erfindung liegt somit die Aufgabe zugrunde, einen Kunststoff-Laugenbehälter mit einer einfachen und verbesserten Befestigung für zumindest ein Ballastgewicht bereitzustellen.The invention is therefore an object of the invention to provide a plastic tub with a simple and improved attachment for at least one ballast weight.

Erfindungsgemäß wird die Aufgabe mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden abhängigen Ansprüchen.According to the invention the object is achieved with the features of claim 1. Advantageous embodiments and modifications of the invention will become apparent from the following dependent claims.

Hierzu wird gemäß der Erfindung vorgeschlagen, dass jeweils zwischen dem Zapfen und der Öffnung zumindest bereichsweise ein Hohlraum verbleibt, wodurch eine Positionierung des Ballastgewichts an der Behälterwand ermöglicht wird. Hierdurch kann das Ballastgewicht vor dem Befestigen in begrenztem Maße gegenüber der Behälterwand seitlich verschoben werden, wodurch auf einfache Weise Fertigungstoleranzen ausgeglichen werden. Somit können recht große Toleranzen für das Ballastgewicht und die Öffnungen zugelassen werden. Das ist besonders vorteilhaft bei Ballastgewichten aus Beton oder einem Metallguss, da hierbei eine genaue Maßhaltigkeit der Öffnungen hinsichtlich der Position nicht oder nur mit hohem Aufwand zu realisieren wäre.For this purpose, it is proposed according to the invention that in each case at least partially a cavity remains between the pin and the opening, whereby a positioning of the ballast weight on the container wall is made possible. As a result, the ballast weight can be displaced laterally before fastening to a limited extent relative to the container wall, whereby manufacturing tolerances are compensated in a simple manner. Thus, quite large tolerances for the ballast weight and the openings can be allowed. This is particularly advantageous in ballast weights made of concrete or a metal casting, since in this case an accurate dimensional accuracy of the openings with respect to the position would not be possible or only with great effort.

Bei der Befestigung des Ballastgewichts an der Stirnseite des Lagenbehälters ist es zweckmäßig, das Ballastgewicht als Ringsegment auszuführen. In dieser Ausführung ist es vorteilhaft, zumindest an den äußeren Enden jeweils eine Öffnung und im Bereich des Scheitels eine Öffnung für die Befestigung an der Behälterwand vorzusehen. Um die Toleranzen auszugleichen, sind die länglichen Öffnungen an den äußeren, seitlichen Enden horizontal und die Öffnung im Bereich des Scheitels vertikal ausgerichtet. Die Richtungsangaben beziehen sich auf die betriebsgemäße Lage des Laugenbehälters in der Waschmaschine. Dadurch erreicht jeder Zapfen die vorgesehene Öffnung, wobei geringfügige Verschiebungen des Ballastgewichts vor dem endgültigen Festziehen der Schrauben noch möglich sind. Hierbei liegen die Längsseiten der Zapfen an der jeweiligen Innenwand der Öffnung an, wodurch eine Kraftverteilung erreicht bzw. der Flächendruck vermindert wird. Durch die Kombination der horizontalen und vertikalen Ausrichtung der länglichen Zapfen und Öffnungen wird ein guter Festsitz bei gleichzeitigem Toleranzausgleich bereitgestellt.When attaching the ballast weight on the front side of the layer container, it is expedient to perform the ballast weight as a ring segment. In this embodiment, it is advantageous to provide at least at the outer ends in each case an opening and in the region of the apex an opening for attachment to the container wall. To compensate for the tolerances, the elongated openings at the outer, lateral ends are horizontal and the opening in the region of the apex is vertically aligned. The directional information refers to the operational position of the tub in the washing machine. As a result, each pin reaches the intended opening, wherein slight displacements of the ballast weight before the final tightening of the screws are still possible. In this case, the longitudinal sides of the pins bear on the respective inner wall of the opening, whereby a force distribution is achieved or the surface pressure is reduced. The combination of the horizontal and vertical alignment of the elongated pins and openings provides a good tight fit with simultaneous tolerance compensation.

In einer vorteilhaften Ausführung ist im Hohlraum zwischen Zapfen und Öffnung ein ringförmiges oder umlaufendes, elastisches Element eingesetzt, welches den Hohlraum zumindest bereichsweise ausfüllt. Dadurch wird eine dauerhafte und sichere Anlage des Ballastgewichts erreicht, wodurch mögliche Relativbewegungen zwischen Ballastgewicht und Laugenbehälterwand vermieden werden.In an advantageous embodiment, an annular or circumferential, elastic element is used in the cavity between the pin and the opening, which at least partially fills the cavity. This will ensure a durable and safe investment of the ballast weight achieved, whereby possible relative movements between ballast weight and lye container wall can be avoided.

In einer vorteilhaften Weiterbindung füllt das elastische Element den Hohlraum entlang der langen Seiten der länglichen Öffnung im Ballastgewicht aus. Da im Bereich der kurzen Seiten der Öffnung noch Hohlräume verbleiben, kann sich dort etwas Material des elastischen Elementes ausbreiten. Für die Befestigung ist eine große Vorspannkraft, die durch das Festschrauben bereitgestellt wird, nicht mehr notwendig, wodurch die Behälterwand im Auflagebereich nicht stark belastet wird. Dadurch wird die Lebensdauer erhöht und mögliche Risse aufgrund zu starker Spannungen oder Belastungen werden vermieden.In an advantageous further connection, the elastic element fills the cavity along the long sides of the elongated opening in the ballast weight. Since cavities still remain in the region of the short sides of the opening, some material of the elastic element can spread there. For attachment, a large biasing force, which is provided by the tightening, no longer necessary, whereby the container wall is not heavily loaded in the support area. As a result, the service life is increased and possible cracks due to excessive stresses or strains are avoided.

In einer zweckmäßigen Ausführung besteht die Hülse aus einem Elastomer- oder Gummimaterial, welches eine Härte im Bereich zwischen 40 bis 80 ShoreA besitzt. Mit dieser Härte wird einerseits eine begrenzte Verformbarkeit erreicht, die einen ausreichenden Reibwiderstand im Auflagebereich bereitstellt. Andererseits ist das Material für eine stabile Befestigung hart genug, damit insbesondere im Betrieb der Waschmaschine möglichst keine Relativbewegungen zwischen Ballastgewicht und Behälterwand auftreten.In an expedient embodiment, the sleeve consists of an elastomer or rubber material which has a hardness in the range between 40 to 80 ShoreA. With this hardness, on the one hand, a limited deformability is achieved, which provides a sufficient frictional resistance in the contact area. On the other hand, the material for a stable attachment is hard enough so that, in particular, no relative movements between ballast weight and container wall occur in particular during operation of the washing machine.

In einer weiteren vorteilhaften Ausführungsform ist an einer Stirnwand des Laugenbehälters zumindest eine Befestigungslasche angeformt, an dem sich der Befestigungszapfen von der Ebene der Stirnwand wegweisend erstreckt. Hierbei kann die Befestigung unabhängig von den Gegebenheiten der Behälterwand ausgeführt werden. Insbesondere kann die Befestigungslasche mit einer höheren Materialstärke ausgeführt werden, um den Belastungen noch besser stand zu halten.In a further advantageous embodiment, at least one fastening tab is integrally formed on an end wall of the tub, on which the fastening pin extends from the plane of the end wall pioneering. Here, the attachment can be performed regardless of the circumstances of the container wall. In particular, the fastening strap can be made with a higher material thickness to better withstand the stresses.

Um eine verbesserte Führung der elastischen Hülse im Bereich der Befestigung bereitzustellen, ist in einer zweckmäßigen Ausführung um die zumindest eine Öffnung im Ballastgewicht ein umlaufender Absatz angeordnet, auf den ein umlaufender Kragen des elastischen Elements aufliegt, wobei zwischen der Schraube und dem Kragen eine Scheibe angeordnet ist, die den Kragen auf den Absatz drückt.In order to provide an improved guidance of the elastic sleeve in the region of the attachment, a circumferential shoulder is arranged in an expedient embodiment around the at least one opening in the ballast weight, on which rests a circumferential collar of the elastic element, wherein a disc is arranged between the screw and the collar is who presses the collar on the heel.

In einer zweckmäßigen Weiterbildung besitzt die Scheibe zur Aufnahme der Schraube im mittleren Bereich eine längliche Öffnung, die sich in Längsrichtung zur Öffnung im Ballastgewicht erstreckt. Auf diese Weise kann die Schraube in einer fest vorgegebenen Position an der Behälterwand eingeschraubt werden, wobei die Position in der Scheibe nicht festgelegt ist, wodurch ein Toleranzausgleich bzw. eine Lageänderung des Ballastgewichts in Längsrichtung dieser Öffnung ermöglicht wird.In an expedient development, the disk for receiving the screw in the central region has an elongated opening which extends in the longitudinal direction to the opening in the ballast weight. In this way, the screw can be screwed in a fixed predetermined position on the container wall, wherein the position in the disc is not fixed, whereby a tolerance compensation or a change in position of the ballast weight in the longitudinal direction of this opening is made possible.

Ein Ausführungsbeispiel der Erfindung wird an Hand der nachstehenden Figuren näher erläutert, dabei zeigen:

Fig. 1:
eine Skizze einer Trommelwaschmaschine;
Fig. 2:
den Laugenbehälter in einer perspektivischen Frontansicht;
Fig. 3:
einen Ausschnitt der Befestigung des Ballastgewichts;
Fig. 4
einen Ausschnitt der Befestigung des Ballastgewichts in einer Explosionsdarstellung;
Fig. 5a, 5b:
einen Ausschnitt der Befestigung des Ballastgewichts in einer Schnittdarstellung und
Fig. 6, 7
weitere Ausführungsformen in einer detaillierten Schnittdarstellung.
An embodiment of the invention will be explained in more detail with reference to the following figures, in which:
Fig. 1:
a sketch of a drum washing machine;
Fig. 2:
the tub in a perspective front view;
3:
a section of the attachment of the ballast weight;
Fig. 4
a section of the attachment of the ballast weight in an exploded view;
5a, 5b:
a section of the attachment of the ballast weight in a sectional view and
Fig. 6, 7
further embodiments in a detailed sectional view.

In Fig. 1 ist eine Waschmaschine 8 mit einem Laugenbehälter 1 in einer Seitenansicht als Schnitt skizziert. Der Laugenbehälter 1 besteht zumindest aus einem zylindrischen Mantel 2, der eine Trommel 3 umgibt. Der zylindrische Mantel 2 wird durch zumindest eine hintere Bodenwand 6a geschlossen. In der Bodenwand 6a ist eine Nabe 4 eingebunden, welche die Antriebswelle 5 für die mittels eines Motors 12 angetriebene Trommel 3 aufnimmt. Die vordere Stirnwand 6 ist mit einer Beladungsöffnung 7 versehen, die durch eine Tür 9 verschließbar ist. Am Mantel 2 und/oder an der Stirnwand 6 sind Ballastgewichte 10, 11 befestigt.In Fig. 1, a washing machine 8 is sketched with a tub 1 in a side view as a section. The tub 1 consists at least of a cylindrical shell 2, which surrounds a drum 3. The cylindrical shell 2 is closed by at least one rear bottom wall 6a. In the bottom wall 6a, a hub 4 is integrated, which receives the drive shaft 5 for driven by a motor 12 drum 3. The front end wall 6 is provided with a loading opening 7 which can be closed by a door 9. On the jacket 2 and / or on the end wall 6 Ballastgewichte 10, 11 are attached.

In Fig. 2 ist der Laugenbehälter 1 in einer perspektivischen Ansicht von vorn dargestellt. Die Ballastgewichte 11 sind außenseitig an der vorderen Stirnwand 6 angeordnet, wobei sie bogenförmig als Teilkreisring ausgebildet sind und außenseitig in etwa dem Verlauf des Mantels 2 folgen und innenseitig die Beladungsöffnung 7 freihalten. Die Gewichte 11 sind an der Stirnwand 6 festgeschraubt, wobei hierbei die Befestigung an Befestigungslaschen 14 erfolgt, die an der Stirnwand 6 und/oder am Mantel 2 angeformt sind. Für die Schrauben sind längliche Öffnungen 16, 16a, 16b vorgesehen, wobei, bezogen auf die betriebsgemäße Lage der Waschmaschine, die äußeren Öffnungen 16, 16a im wesentlichen horizontal und die Öffnung 16b im Scheitelbereich 27 vertikal ausgerichtet sind/ist. Diese Anordnung ermöglicht einen sehr guten Toleranzausgleich.In Fig. 2, the tub 1 is shown in a perspective view from the front. The ballast weights 11 are arranged on the outside on the front end wall 6, wherein they are arcuately formed as a partial circular ring and outside follow approximately the course of the shell 2 and the inside the loading opening 7 free. The weights 11 are screwed to the end wall 6, in which case the attachment to fastening tabs 14 takes place, which are integrally formed on the end wall 6 and / or on the jacket 2. Elongated openings 16, 16a, 16b are provided for the screws, the outer openings 16, 16a being substantially horizontal and the opening 16b being vertically aligned in the apex region 27, based on the operational position of the washing machine. This arrangement allows a very good tolerance compensation.

In Fig. 3 ist die Befestigung des Ballastgewichts 11 im Detail aufskizziert. An der Stirnwand 6 bzw. an der Lasche 14 ist ein Zapfen 15 (nicht dargestellt) angeformt, der sich aus der Ebene der Lasche 14 erhebt. Das Ballastgewicht 11 hat eine Öffnung 16, in die von der Wandseite her der Zapfen 15 hineinragt. Mit Hilfe der Schraube 13 und einer untergelegten Scheibe 21 wird das Ballastgewicht 11 gegen die Behälterwand 6 bzw. die Lasche 14 gedrückt. Die Öffnung 16 und die aufgesetzte Scheibe 21 sind länglich ausgebildet, wobei die längliche Öffnung 26 in der Scheibe 21 einen Toleranzausgleich für die Schraubbefestigung bereitstellt.In Fig. 3, the attachment of the ballast weight 11 is sketched in detail. On the end wall 6 and on the tab 14 is a pin 15 (not shown) integrally formed, which rises from the plane of the tab 14. The ballast weight 11 has an opening 16 into which the pin 15 projects from the wall side. With the help of the screw 13 and an underlaid disc 21, the ballast weight 11 is pressed against the container wall 6 and the tab 14. The opening 16 and the patch disc 21 are elongated, wherein the elongated opening 26 in the disc 21 provides a tolerance compensation for the screw fastening.

In Fig. 4 ist der Befestigungsbereich in einer Explosionsdarstellung aufskizziert. An der Stirnwand 6 oder auf der Ebene der Lasche 14 ist ein Zapfen 15 angeformt. Dieser Zapfen 15 ist länglich oder oval geformt und erstreckt sich im wesentlichen in Verlaufsrichtung der korrespondierenden Öffnung 16 im Ballastgewicht 11. Über den Zapfen 15 wird ein ringförmiges elastisches Element 19 gestülpt, wobei es an den kurzen Seiten des länglichen Zapfens 15 nicht bündig anliegt. Alternativ kann vorab das elastische Element 19 in die Öffnung 16 im Ballastgewicht 11eingesetzt werden, wobei es mit dem umlaufenden Kragen 23 (Fig. 4a) am Ballastgewicht gehalten wird. Anschließend wird das mit den elastischen Elementen bestückte Ballastgewicht 11 auf die Zapfen 15 gesteckt. Das Ballastgewicht 11 ist an der Stirnwand 6 so angeordnet, dass der Zapfen 15 mit dem elastischen Element 19 in die längliche Öffnung 16 ragt. Hierbei liegen die langen Seiten der Innenwand 28 der Öffnung 16 bündig und/oder unter Druck am elastischen Element 19 an, wobei die kurzen Seiten einen Spalt bilden oder nur lose am elastischen Element 19 anliegen oder einen Spalt 18 (Fig. 5a) zwischen dem elastischen Element 19 und dem Zapfen 15 bilden. Auf diese Weise wird eine Positionierung oder Fixierung in Richtung C erreicht, wobei in Längsrichtung L der Öffnung 16 eine Verschiebung möglich ist. Auf der Seite des Ballastgewichts 11, die der Stirnwand 6 abgewandt ist, wird unter Zwischenlage der Scheibe 21 die Schraube 13 durch die Öffnung 16 des Ballastgewichts 11 in die Öffnung 31 gesteckt und in die Mutter (nicht dargestellt) eingeschraubt.In Fig. 4, the mounting portion is sketched in an exploded view. On the end wall 6 or on the level of the tab 14, a pin 15 is formed. This pin 15 is elongated or oval in shape and extends substantially in the direction of the corresponding opening 16 in ballast weight 11. About the pin 15, an annular elastic member 19 is slipped, wherein it is not flush on the short sides of the elongated pin 15. Alternatively, in advance, the elastic element 19 can be inserted into the opening 16 in the ballast weight 11, being held at the ballast weight with the encircling collar 23 (FIG. 4a). Subsequently, the equipped with the elastic elements ballast weight 11 is placed on the pins 15. The ballast weight 11 is arranged on the end wall 6 so that the pin 15 projects with the elastic element 19 in the elongated opening 16. Here, the long sides of the inner wall 28 of the opening 16 are flush and / or under pressure on the elastic member 19, wherein the short sides form a gap or only loosely on the elastic member 19 or a gap 18 (Fig. 5a) between the elastic Form element 19 and the pin 15. In this way, a positioning or fixing in the direction C is achieved, wherein in the longitudinal direction L of the opening 16, a shift is possible. On the side of the ballast weight 11, which faces away from the end wall 6, the screw 13 is inserted through the opening 16 of the ballast weight 11 in the opening 31 with the interposition of the disc 21 and screwed into the nut (not shown).

In Fig. 5a ist das befestigte Ballastgewicht 11 in einer detaillierten Schnittdarstellung entlang der Schnittlinie B-B (Fig. 3) aufskizziert. Durch das Anziehen der Schraube 13, die in einer Mutter 20 auf der gegenüberliegenden Seite der Lasche 14 eingeschraubt wird, wird das Ballastgewicht 11 gegen den Anlagebereich 17 an der Behälterwand 6 bzw. an der Lasche 14 gedrückt. Aus der Ebene der Lasche 14 erhebt sich der Zapfen 15, der in die Öffnung 16 des Ballastgewichts 11 ragt. Die elastische Hülse 19 liegt im Hohlraum 18 an der Innenwand 28 der Öffnung 16 an, wobei der Hohlraum 18 zwischen dem Zapfen 15 und der Innenwand 28 der Öffnung 16 nur teilweise durch die Hülse 19 ausgefüllt wird. Am stirnseitigen Ende der Hülse 19 ist ein umlaufender Kragen 23 angeformt, der radial nach außen gerichtet ist und auf einen umlaufenden Absatz 24 des Ballastgewichts 11 aufliegt. Beim Anziehen der Schraube 13 wird der ebene Bereich 22 des Ringes 19 etwas gestaucht und der umlaufende Kragen 23 auf das Ballastgewicht 11 bzw. auf den Absatz 24 gedrückt. Durch das Rückstellvermögen des Kragens 23 wird das Ballastgewicht 11 mit einer begrenzten Kraft gegen den Anlagebereich 17 auf die Behälterwand 6 bzw. Lasche 14 gedrückt, wodurch ein zuverlässiger und dauerhafter Festsitz des Ballastgewichts 11 erreicht wird.In Fig. 5a, the fixed ballast weight 11 in a detailed sectional view along the section line B-B (Fig. 3) is sketched. By tightening the screw 13, which is screwed into a nut 20 on the opposite side of the tab 14, the ballast weight 11 is pressed against the contact area 17 on the container wall 6 and on the tab 14. From the plane of the tab 14, the pin 15 rises, which projects into the opening 16 of the ballast weight 11. The elastic sleeve 19 is located in the cavity 18 on the inner wall 28 of the opening 16, wherein the cavity 18 between the pin 15 and the inner wall 28 of the opening 16 is only partially filled by the sleeve 19. At the front end of the sleeve 19, a circumferential collar 23 is formed, which is directed radially outward and rests on a peripheral shoulder 24 of the ballast weight 11. When tightening the screw 13, the flat portion 22 of the ring 19 is slightly compressed and pressed the circumferential collar 23 on the ballast weight 11 and on the shoulder 24. Due to the resilience of the collar 23, the ballast weight 11 is pressed with a limited force against the contact area 17 on the container wall 6 and tab 14, whereby a reliable and permanent tight fit of the ballast weight 11 is achieved.

Fig. 5b zeigt das Ballastgewicht 11 in einer skizzierten Schnittdarstellung entlang der Schnittlinie A-A (Fig. 3). Hierbei ist der Hohlraum 18 zwischen dem Zapfen 15 und der Innenwand 28 der Öffnung 16 fast vollständig ausgefüllt, wobei der ebene Bereich 22 des Ringes 19 sowohl an dem Zapfen 15 als auch an der Innenwand 28 der Öffnung 16 anliegt bzw. innerhalb des Hohlraumes 18 komprimiert wird.FIG. 5b shows the ballast weight 11 in a sketched sectional view along the section line AA (FIG. 3). Here, the cavity 18 between the pin 15 and the inner wall 28 of the opening 16 is almost completely filled, wherein the flat portion 22 of the ring 19 both is applied to the pin 15 and on the inner wall 28 of the opening 16 and is compressed within the cavity 18.

Fig. 6 zeigt eine Ausführung der Hülse 19, bei der auf der zur Behälterwand 6 zugewandten Stirnseite ein weiterer umlaufender, nach außen gerichteter Kragen 25 angeformt ist, der sich zwischen Ballastgewicht 11 und Behälterwand 6 befindet und die Auflage 17 für das Ballastgewicht 11 bereitstellt. Dieser Kragen 25 bewirkt als Zwischenlage einen erhöhten Reibungswiderstand zwischen Ballastgewicht 11 und Behälterwand 6, wodurch seitliche Relativbewegungen des Ballastgewichts 11 vermieden werden. Aufgrund des erhöhten Reibwiderstands des Kragens 25 wird der Festsitz nochmals verbessert, wobei das Ballastgewicht 11 nicht mehr so fest gegen die Auflagefläche der Stirnwand 6 oder Lasche 14 gedrückt werden muss. Hierdurch wird das Relaxionsverhalten im Kunststoff im Bereich der Befestigung bzw. der Auflage 17 weitestgehend vermieden. Damit wird eine zuverlässige Befestigung für alle auftretenden Betriebssituationen über die gesamte Lebensdauer der Waschmaschine 8 (Fig. 1) bereitgestellt.Fig. 6 shows an embodiment of the sleeve 19, in which on the end facing the container wall 6, a further peripheral, outwardly directed collar 25 is formed, which is located between ballast 11 and container wall 6 and the support 17 provides for the ballast weight 11. This collar 25 causes an intermediate friction increased resistance between ballast weight 11 and container wall 6, whereby lateral relative movements of the ballast weight 11 can be avoided. Due to the increased frictional resistance of the collar 25 of the interference fit is further improved, the ballast weight 11 does not have to be pressed so firmly against the support surface of the end wall 6 or tab 14. As a result, the relaxation behavior in the plastic in the attachment or the support 17 is largely avoided. This provides a reliable attachment for all operating situations that occur over the entire service life of the washing machine 8 (FIG. 1).

Fig. 7 zeigt eine weitere Ausführung, bei der die Mutter 20 zur Lasche 14 hin abgewinkelte Segmente 30 umfasst, die teilweise durch Öffnungen 29 in der Lasche 14 hindurchgeführt sind. Das freie Ende dieser Segmente 30 bildet die Auflage 17 für das Ballastgewicht 11. Mit dieser Befestigungsart kann die Schraube 13 sehr festgezogen werden, da das Ballastgewicht 11 mit seinem Auflagebereich 17 nicht mehr auf den Kunststoff der Behälterwand 6 bzw. Lasche 14 gedrückt wird und sich deshalb nicht in den Kunststoff eindrücken kann.Fig. 7 shows a further embodiment in which the nut 20 to the tab 14 towards angled segments 30 includes, which are partially passed through openings 29 in the tab 14. The free end of these segments 30 forms the support 17 for the ballast weight 11. With this type of fastening, the screw 13 can be very tightened because the ballast weight 11 is no longer pressed with its support portion 17 on the plastic of the container wall 6 and tab 14 and therefore can not press into the plastic.

Claims (7)

Laugenbehälter (1) für eine Trommelwaschmaschine (8) mit zumindest einem mittels Schraubverbindung (13) befestigten Ballastgewicht (11), welches als Ringsegment ausgeführt ist und auf Auflagebereiche (17) an der Behälterwand (6) angedrückt wird, wobei für die Schraubverbindung (13) an der Behälterwand (6) zumindest drei längliche Zapfen (15) angeformt sind, die jeweils in eine korrespondierende längliche Öffnung (16) im Ballastgewicht (10, 11) ragen, wobei die Zapfen (15) in Längsrichtung der jeweils korrespondierenden Öffnung (16, 16a, 16b) ausgerichtet sind,
dadurch gekennzeichnet,
dass das Ballastgewicht (11) zumindest an den äußeren, seitlichen Enden und im Bereich des Scheitels (27) jeweils eine längliche Öffnung (16, 16a, 16b) für die Befestigung an der Behälterwand (2,6) umfasst und dass in betriebsgemäßer Lage des Laugenbehälters (1) die Öffnungen (16, 16a) an den äußeren, seitlichen Enden des Ballastgewichts (11) horizontal und die Öffnung (16b) im Bereich des Scheitels (27) vertikal ausgerichtet sind/ist und dass jeweils zwischen dem Zapfen (15) und der Öffnung (16) zumindest bereichsweise ein Hohlraum (18) verbleibt, wodurch eine Positionierung des Ballastgewichts (11) an der Behälterwand (6) ermöglicht wird.Lye container (1) for a drum washing machine (8) with at least one by screw (13) fixed ballast weight (11), which is designed as a ring segment and is pressed onto support areas (17) on the container wall (6), wherein for the screw (13 ) on the container wall (6) at least three elongated pins (15) are formed, each in a corresponding elongated opening (16) in the ballast weight (10, 11) protrude, wherein the pins (15) in the longitudinal direction of the respective corresponding opening (16 , 16a, 16b) are aligned,
characterized,
that the ballast weight (11) at least at the outer, lateral ends and in the region of the apex (27) in each case an elongated opening (16, 16 a, 16 b) for attachment to the container wall (2,6) and that in an operative position of the Lye container (1) the openings (16, 16a) at the outer, lateral ends of the ballast weight (11) horizontally and the opening (16b) in the region of the apex (27) is vertically aligned / and that in each case between the pin (15) and the opening (16) at least partially a cavity (18) remains, whereby a positioning of the ballast weight (11) on the container wall (6) is made possible. Laugenbehälter (1) nach einem der Ansprüche 1,
dadurch gekennzeichnet,
dass im Hohlraum (18) zwischen Zapfen (15) und Öffnung (16) ein ringförmiges, elastisches Element (19) eingesetzt ist, welches den Hohlraum (18) zumindest bereichsweise ausfüllt.Lye container (1) according to one of claims 1,
characterized,
that in the cavity (18) between the pin (15) and opening (16) an annular, elastic element (19) is inserted, which at least partially fills the cavity (18). Laugenbehälter (1) nach Anspruch 2,
dadurch gekennzeichnet,
dass das elastische Element (19) den Hohlraum (18) entlang der langen Seiten der länglichen Öffnung (16) im Ballastgewicht (11) ausfüllt.Lye container (1) according to claim 2,
characterized,
in that the elastic element (19) fills the cavity (18) along the long sides of the elongate opening (16) in the ballast weight (11). Laugenbehälter (1) nach Anspruch 2 oder 3,
dadurch gekennzeichnet,
dass das elastische Element (19) aus einem Elastomer- oder Gummimaterial besteht, welches eine Härte im Bereich zwischen 40 bis 80 ShoreA besitzt.Lye container (1) according to claim 2 or 3,
characterized,
in that the elastic element (19) consists of an elastomer or rubber material which has a hardness in the range between 40 and 80 ShoreA. Laugenbehälter (1) nach Anspruch 1,
dadurch gekennzeichnet,
dass zumindest ein Zapfen (15) an einer Befestigungslasche (14) am Laugenbehälter (1) angeformt ist, und sich von der Ebene der Stirnwand (6) wegweisend erstreckt.Lye container (1) according to claim 1,
characterized,
in that at least one pin (15) is integrally formed on a fastening lug (14) on the lye container (1) and extends in a pioneering manner from the plane of the end wall (6). Laugenbehälter (1) nach Anspruch 1,
dadurch gekennzeichnet,
dass die zumindest eine Öffnung (16) im Ballastgewicht (11) einen umlaufenden Absatz (24) besitzt, auf den ein umlaufender Kragen (23) des elastischen Elements (19) aufliegt, wobei zwischen der Schraube (13) und dem Kragen (23) eine Scheibe (21) angeordnet ist, die den Kragen (23) auf den Absatz (24) drückt.Lye container (1) according to claim 1,
characterized,
in that the at least one opening (16) in the ballast weight (11) has a circumferential shoulder (24) on which a peripheral collar (23) of the elastic element (19) rests, wherein between the screw (13) and the collar (23) a disc (21) is arranged, which presses the collar (23) on the shoulder (24). Laugenbehälter (1) nach Anspruch 6,
dadurch gekennzeichnet,
dass die Scheibe (21) zur Aufnahme der Schraube (13) im mittleren Bereich eine längliche Öffnung (26) besitzt, die sich in Längsrichtung zur Öffnung (16) im Ballastgewicht (11) erstreckt.Lye container (1) according to claim 6,
characterized,
in that the disk (21) for receiving the screw (13) has an elongated opening (26) extending in the longitudinal direction towards the opening (16) in the ballast weight (11).
EP07033518A 2006-11-06 2007-10-16 Tub with ballast weight for a washing machine Active EP1918445B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006052514A DE102006052514B4 (en) 2006-11-06 2006-11-06 Liquids container with ballast weight for a washing machine

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EP1918445A1 true EP1918445A1 (en) 2008-05-07
EP1918445B1 EP1918445B1 (en) 2009-07-01

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ITMC20090003A1 (en) * 2009-01-14 2010-07-15 Meccanica Generale Srl BATHTUB FOR WASHING MACHINE OR WASHING MACHINE.
EP2465990A1 (en) * 2010-12-20 2012-06-20 Samsung Electronics Co., Ltd. Washing machine
EP2551396A1 (en) 2011-07-27 2013-01-30 Electrolux Home Products Corporation N.V. Washing machine
CN112760929A (en) * 2020-12-30 2021-05-07 Tcl家用电器（合肥）有限公司 Double-drum washing machine

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DE102014110812A1 (en) * 2014-07-30 2016-02-04 Miele & Cie. Kg Cap for a washing machine washing tub, washing machine and method for making a cap for a tub
DE102016106605A1 (en) * 2016-04-11 2017-10-12 Miele & Cie. Kg Washing machine

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EP0798412A2 (en) * 1996-03-21 1997-10-01 Balay S.A. Anchorage device of the washing machine counterweight
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ITMC20090003A1 (en) * 2009-01-14 2010-07-15 Meccanica Generale Srl BATHTUB FOR WASHING MACHINE OR WASHING MACHINE.
EP2236659A1 (en) * 2009-01-14 2010-10-06 Meccanica Generale S.R.L. Tub for washing machine or washer-drier
EP2465990A1 (en) * 2010-12-20 2012-06-20 Samsung Electronics Co., Ltd. Washing machine
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US9657427B2 (en) 2010-12-20 2017-05-23 Samsung Electronics Co., Ltd. Washing machine
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CN112760929A (en) * 2020-12-30 2021-05-07 Tcl家用电器（合肥）有限公司 Double-drum washing machine

Also Published As

Publication number Publication date
DE102006052514B4 (en) 2010-08-05
ES2327577T3 (en) 2009-10-30
EP1918445B1 (en) 2009-07-01
DE102006052514A1 (en) 2008-05-15
ATE435324T1 (en) 2009-07-15
DE502007000984D1 (en) 2009-08-13

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