EP1431438A1 - Washing drum for a drum type washing maschine - Google Patents

Washing drum for a drum type washing maschine Download PDF

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Publication number
EP1431438A1
EP1431438A1 EP03027295A EP03027295A EP1431438A1 EP 1431438 A1 EP1431438 A1 EP 1431438A1 EP 03027295 A EP03027295 A EP 03027295A EP 03027295 A EP03027295 A EP 03027295A EP 1431438 A1 EP1431438 A1 EP 1431438A1
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EP
European Patent Office
Prior art keywords
drum
strip
driver
fastening elements
shaped mounting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03027295A
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German (de)
French (fr)
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EP1431438B1 (en
Inventor
Uwe Ratfisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1431438A1 publication Critical patent/EP1431438A1/en
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Publication of EP1431438B1 publication Critical patent/EP1431438B1/en
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Classifications

    • 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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle

Definitions

  • the invention relates to a laundry drum for a drum washing machine at least one on the inside of the drum shell by means of fastening elements attached drivers from a hollow body open to the drum shell a cross-sectional area, which is similar to a triangle, and stiffening structures the inside of his flanks.
  • Such a drum is known for example from GB 1 161 219.
  • the drivers made of plastic are fastened to the drum shell by locking pieces, by these locking pieces when inserting the driver into the openings of one the arrangement of the locking pieces congruent hole pattern set and then as far sideways be moved until the locking pieces come under the tabs of the openings and be locked there.
  • the drivers are then through from the outside Driving parts in the drum shell penetrating screws connected to it the drivers cannot move out of the locking position.
  • the invention has for its object a laundry drum of the aforementioned Specify the type in which the drivers are securely and stably fastened, the high-speed Do not spin while deforming the drum and itself Form gaps between themselves and the drum shell and none in the long run Flow deformation are exposed, which leads to the loosening of the connections and to rattling noises leads.
  • this object is achieved in accordance with the characterizing part of claim 1 solved that in the area of at least part of the structures strip-shaped Assembly parts with a substantially parallel to the surface of the drum shell Section are positively connected to the inside of the flanks and the sections have at least two fastening elements, by means of which the driver is attached to the drum shell.
  • the required elasticity is shown in a particularly advantageous manner in that the strip-shaped mounting part at its ends in the direction of the interior of the driver has cranked areas in tab-shaped end sections leak with which the strip-shaped assembly part undercuts the associated Structures. This creates two bending zones in the form of strips Mounting part that provides the necessary elasticity as spring elements.
  • the strip-shaped Mounting part in the area between the fasteners is rigid
  • one of the drivers can be mounted over the connection seam of the drum casing be that the fasteners of the strip-shaped mounting part on both sides the connecting seam and the mounting part as a local reinforcement of the drum shell serves by the weak point of the Drum jacket bridging stabilizing. There and also at the assembly locations of the rest The stiffness of the drum shell is advantageously increased by the driver.
  • the areas around the fastening elements of the strip-shaped mounting part are elastic educated. This makes it easier to attach the assembly parts to the drivers and safer. This allows the elastically designed mounting parts in front of the Installation of the drivers from above the open sides of the drivers by bending together the elastic parts are led under the undercuts.
  • the fastening elements on the strip-shaped elements are particularly advantageous Mounting parts threaded holes and those for connection between the drum shell and the drivers screws. If the reinforcement of the drum jacket connection seam and possibly also the other drum shell surfaces in the foreground the screw connection is the safest fastening method.
  • an embodiment variant of the invention should be roughly equal of the fasteners on the strip-shaped mounting parts holes and those rivets for the connection between the drum shell and the drivers.
  • This fastening method is used because of the cost advantages compared to the screw connection may be preferable.
  • the fasteners on the strip-shaped assembly parts molded rivets are used to connect the driver to the drum shell Pierce holes in the drum jacket.
  • the fasteners lugs formed on the strip-shaped assembly parts for connection of the driver with the drum jacket penetrate slots in the drum jacket and are bent towards the outer surface of the drum shell.
  • strip-shaped assembly parts are formed from sheet metal.
  • Fig. 1 shows a rolled drum shell and held together at the connecting seam 2 1, which is equipped with three evenly distributed drivers 3 on its inside is.
  • the shape of the driver 3 is not of great importance for the invention; however a shape is common that has at least approximately one (symmetrical or asymmetrical) triangle.
  • the carriers are 3 even slightly helical, so that they do not extend in their longitudinal direction are parallel to the drum center axis 4.
  • a section of the cladding sheet 1 is indicated by dashed lines. Furthermore, a fictitious line 5 is indicated, which shows the position of the connecting seam 2 could indicate below the driver 3 and parallel to the drum center axis 4 lies.
  • structures 7 and 9 serve the purpose of Stiffen flanks 6 so that they are in extreme deformations of the drum shell do not collapse during heavy loads during high-speed spinning.
  • stiffening structures Some (9) of the stiffening structures also serve as strip-shaped mounting parts 10 to hold, with which the driver 3 tight at firm connections Drum jacket 1 are attached. Further details can be found in FIGS. 3 and 4.
  • the stiffening structures 9 in FIG. 3 are close to the open base side 11 of the driver 3, with which it is connected on the inside of the drum shell 1 by each formed an undercut 12 on each flank 6 so that a flap-shaped End portion 13 of a cranked end 14 of the strip-shaped mounting part 10, here formed as a resilient sheet metal strip, can engage in the undercut 12.
  • the cranked End 14 is designed to be resilient so that the metal strip 10 when inserted can be moved past the upper section 15 of the stiffening structure 9. there the outermost edge of the tab-shaped end portion 13 slides on the oblique edge 16 of the upper section 15 along the stiffening structure 9 and finally falls in Undercut 12 a.
  • middle section 17 which - except for the arched bulge downwards - essentially is parallel to the drum shell 1, resilient.
  • the sheet metal strip 10 has a threaded bore immediately next to each cranked end 14 18, into which one is inserted from the outside of the drum shell 1 Screw 19 (Fig. 1) can be screwed in.
  • This screw 19 pulls the metal strip tight to the inside of the drum shell 1 and thus brings a large force on the cranked end 14 of the sheet metal strip 10.
  • the sheet metal strip 10 is between the threaded holes and the penetrating screws 19 with a rigid Midsection 20 equipped to the area of the drum shell 1 where the Middle section 20 is present, particularly stiffening.
  • a connecting seam 2 of the drum shell 1 of interest which at Skidding due to increased forces in the direction of the circumference of the jacket for installation and tearing open.
  • This effect would primarily relieve the strain on the seam 2 through the sheet metal strip 10 with its rigid central portion 20 on the Counteract seam 2.
  • the stabilization of the connecting seam 2 counteract by the pressure of the metal strip 10 on the joint 2.
  • the metal strip 10 can be provided with a bead 21 in the central section 20 or be made particularly thick.
  • the positive connection between the strip-shaped Mounting part 10 and the driver 3 may be represented by other shapes.
  • the cranked end is shaped in a way through which the tab-shaped end section is also laterally with respect to the longitudinal extent of the mounting part 10 or towards the center of the driver cavity is turned.
  • the cranked end can with such a high spring force be formed so that the sheet metal strip is not for insertion into the assembly position compress more elastically.
  • the undercut 12 can then be formed in this way be that the mounting part 10 insert from the side of the undercut 12 leaves.
  • the strip-shaped mounting part 10 can also, contrary to the exemplary embodiments achieve the same effect without a cranked end 14 if its positive Fastening in the driver succeeds in another way.
  • the ends of the strip should be straight when the entire assembly part is slightly lower in Driver is arranged and the fasteners (e.g. threaded holes) alone are arched further to the base line of the driver.
  • the strip-shaped mounting part can also be formed in several parts in order to insert it to facilitate in the driver.
  • fasteners can be designed completely different, without the Leaving invention.
  • simple holes can be used instead of the threaded holes be provided and rivets instead of the screws.
  • the rivets can be made from loose parts exist or integral part of the strip-shaped assembly part or Drum shell.
  • the strip-shaped assembly part or to the Drum-shaped flaps formed by openings of the same shape and position inserted in the opposite direction (drum jacket or strip-shaped assembly part) and are bent behind each.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Undergarments, Swaddling Clothes, Handkerchiefs Or Underwear Materials (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Clamps And Clips (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)

Abstract

The device has at least one drive element (3) attached to the inside of the drum casing by attachment elements (19) and in the form of a hollow body open towards the casing with a cross-sectional surface similar to a triangle and stiffening structures (9) on the inside of its sides. Strip-shaped mounting parts (10) near at least some of its structures are joined to the inside of the sides by a section (20) essentially parallel to the drum casing surface with at least two attachment elements with which the drive element is attached to the drum casing.

Description

Die Erfindung geht aus von einer Wäschetrommel für eine Trommelwaschmaschine mit wenigstens einem an der Innenseite des Trommelmantels mittels Befestigungselementen befestigten Mitnehmer aus einem zum Trommelmantel hin offenen Hohlkörper mit einer Querschnittsfläche, die einem Dreieck ähnlich ist, und versteifenden Strukturen an den Innenseiten der seiner Flanken.The invention relates to a laundry drum for a drum washing machine at least one on the inside of the drum shell by means of fastening elements attached drivers from a hollow body open to the drum shell a cross-sectional area, which is similar to a triangle, and stiffening structures the inside of his flanks.

Eine solche Wäschetrommel ist beispielsweise durch GB 1 161 219 bekannt. Darin sind die aus Kunststoff bestehenden Mitnehmer durch Raststücke am Trommelmantel befestigt, indem diese Raststücke beim Einsetzen der Mitnehmer in die Durchbrüche eines zu der Anordnung der Raststücke kongruenten Lochbildes gesetzt und dann seitlich soweit verschoben werden, bis die Raststücke unter Blechnasen der Durchbrüche geraten und dort arretiert werden. Zusätzlich sind die Mitnehmer dann noch durch von außen durch Mitnehmerteile in den Trommelmantel eindringende Schrauben mit ihm verbunden, damit sich die Mitnehmer nicht aus der Arretierposition bewegen können.Such a drum is known for example from GB 1 161 219. Are in it the drivers made of plastic are fastened to the drum shell by locking pieces, by these locking pieces when inserting the driver into the openings of one the arrangement of the locking pieces congruent hole pattern set and then as far sideways be moved until the locking pieces come under the tabs of the openings and be locked there. In addition, the drivers are then through from the outside Driving parts in the drum shell penetrating screws connected to it the drivers cannot move out of the locking position.

Zwar sind solche Mitnehmer am Trommelmantel sicher befestigt. Da jedoch beim Schleudern der Wäschetrommel insbesondere mit hohen Schleuderdrehzahlen (jenseits von 1500 U/min) sehr große Kräfte auf die Trommel und auf die Mitnehmer einwirken, besteht die Gefahr der elastischen Verformung des Mantelbleches und der Mitnehmer, soweit sie aus Kunststoff bestehen, was heutiger Standard ist. Dabei können zwischen den Mitnehmerkanten und dem Mantelblech der Trommel Spalte entstehen, in die Wäschestücke eindringen können und in denen diese Wäschestücke nach Abschluss des Schleuderprozesses - nach Rückformung aller beteiligten Bauteile - eingeklemmt werden und Schaden nehmen können.Such drivers are securely attached to the drum shell. However, since Spin the laundry drum especially at high spin speeds (beyond of 1500 rpm) very large forces act on the drum and on the drivers, there is a risk of elastic deformation of the jacket sheet and the drivers, as far as they are made of plastic, which is today's standard. You can choose between the driving edges and the cladding of the drum column arise in the laundry can penetrate and in which these laundry items after completing the Centrifuging process - after reshaping of all components involved - be pinched and can be damaged.

Außerdem ist die unmittelbare Befestigung von Kunststoffteilen an vergleichsweise unelastischen Unterlagen grundsätzlich problematisch. Es ist nämlich bekannt, dass Kunststoff unter lange einwirkenden Kräften sich fließend plastisch verformt. Im Falle der bekannten Mitnehmer bedeutet dies, dass diese Art der Befestigung nicht von Dauer ist. Über längere Zeit hin werden die miteinander verbundenen Kontaktstellen so viel Spiel gewinnen, dass solche Mitnehmer bei jeder Bewegung klappern. In addition, the direct attachment of plastic parts to comparatively inelastic Documents generally problematic. It is known that Plastic is plastically deformed under long-acting forces. In case of known driver this means that this type of attachment is not permanent. The interconnected contact points become so much play over a longer period of time win that such carriers clatter with every movement.

Der Erfindung liegt die Aufgabe zugrunde, eine Wäschetrommel der eingangs genannten Art anzugeben, bei der die Mitnehmer sicher und stabil befestigt sind, die beim hochtourigen Schleudern unter Verformung der Trommel und ihrer selbst keine schädlichen Spalte zwischen sich und dem Trommelmantel bilden und die auch auf lange Dauer keiner Fließverformung ausgesetzt sind, die zum Lösen der Verbindungen und zu Klappergeräuschen führt.The invention has for its object a laundry drum of the aforementioned Specify the type in which the drivers are securely and stably fastened, the high-speed Do not spin while deforming the drum and itself Form gaps between themselves and the drum shell and none in the long run Flow deformation are exposed, which leads to the loosening of the connections and to rattling noises leads.

Erfindungsgemäß wird diese Aufgabe gemäß dem Kennzeichen des Anspruches 1 dadurch gelöst, dass im Bereich wenigstens eines Teils der Strukturen streifenförmige Montageteile mit einem im wesentlichen parallel zur Fläche des Trommelmantels liegenden Abschnitt formschlüssig mit der Innenseite der Flanken verbunden sind und die Abschnitte wenigstens zwei Befestigungselemente aufweisen, mittels denen der Mitnehmer am Trommelmantel befestigt ist.According to the invention, this object is achieved in accordance with the characterizing part of claim 1 solved that in the area of at least part of the structures strip-shaped Assembly parts with a substantially parallel to the surface of the drum shell Section are positively connected to the inside of the flanks and the sections have at least two fastening elements, by means of which the driver is attached to the drum shell.

Durch diese mittelbare Verbindung zwischen den Mitnehmern und dem Trommelmantel, kann eine gewisse Elastizität in die Verbindungsmittel (streifenförmige Montageteile) gelegt werden, die einer Fließverformung ständig elastisch folgen, so dass die formschlüssige Verbindung nie aufgegeben wird. Dadurch gelingt die stabile und sichere Verbindung der Mitnehmer am Trommelmantel auf Dauer, und es wird die Bildung von Spalten zwischen dem Mitnehmer und dem Trommelmantel vermieden, in denen sich etwa Wäschestücke verklemmen könnten.Through this indirect connection between the drivers and the drum shell, can a certain elasticity in the connecting means (strip-shaped assembly parts) be placed, which follow a flow deformation constantly elastic, so that the positive Connection is never abandoned. This enables the stable and safe Connection of the drivers on the drum jacket in the long run, and it will form Avoid gaps between the driver and the drum jacket in which there are could jam items of laundry.

In besonders vorteilhafter Weise gelingt die Darstellung der erforderlichen Elastizität dadurch, dass das streifenförmige Montageteil an seinen Enden in Richtung des Innenraums des Mitnehmers gekröpfte Bereiche aufweist, die in lappenförmigen Endabschnitten auslaufen, mit denen das streifenförmige Montageteil unter Hinterschnitte der zugeordneten Strukturen fasst. Dadurch entstehen nämlich zwei Biegezonen im streifenförmigen Montageteil, die als Federelemente für die nötige Elastizität sorgen.The required elasticity is shown in a particularly advantageous manner in that the strip-shaped mounting part at its ends in the direction of the interior of the driver has cranked areas in tab-shaped end sections leak with which the strip-shaped assembly part undercuts the associated Structures. This creates two bending zones in the form of strips Mounting part that provides the necessary elasticity as spring elements.

Wenn nach einer weiteren vorteilhaften Ausgestaltung der Erfindung das streifenförmige Montageteil im Bereich zwischen den Befestigungselementen biegesteif ausgestattet ist, kann der eine der Mitnehmer so über der Verbindungsnaht des Trommelmantels montiert sein, dass die Befestigungselemente des streifenförmigen Montageteils beiderseits der Verbindungsnaht liegen und das Montageteil als lokale Verstärkung des Trommelmantels dient, indem es die durch die Verbindungsnaht bedingte Schwachstelle des Trommelmantels stabilisierend überbrückt. Dort und auch an den Montageorten der übrigen Mitnehmer wird die Steifigkeit des Trommelmantels in vorteilhafter Weise erhöht. If, according to a further advantageous embodiment of the invention, the strip-shaped Mounting part in the area between the fasteners is rigid, one of the drivers can be mounted over the connection seam of the drum casing be that the fasteners of the strip-shaped mounting part on both sides the connecting seam and the mounting part as a local reinforcement of the drum shell serves by the weak point of the Drum jacket bridging stabilizing. There and also at the assembly locations of the rest The stiffness of the drum shell is advantageously increased by the driver.

In einer davon abweichenden aber ebenfalls vorteilhaften Weiterbildung der Erfindung sind die Bereiche um die Befestigungselemente des streifenförmigen Montageteils elastisch ausgebildet. Dadurch ist die Anbringung der Montageteile an den Mitnehmern einfacher und sicherer. Dadurch können die elastisch ausgebildeten Montageteile vor dem Einbau der Mitnehmer von oberhalb der offenen Seiten der Mitnehmer her unter Zusammenbiegung der elastischen Teile unter die Hinterschnitte geführt werden.In a deviating but also advantageous development of the invention the areas around the fastening elements of the strip-shaped mounting part are elastic educated. This makes it easier to attach the assembly parts to the drivers and safer. This allows the elastically designed mounting parts in front of the Installation of the drivers from above the open sides of the drivers by bending together the elastic parts are led under the undercuts.

In besonders vorteilhafter Weise sind die Befestigungselemente an den streifenförmigen Montageteilen Gewindelöcher und diejenigen zur Verbindung zwischen dem Trommelmantel und den Mitnehmern Schrauben. Sofern die Versteifung der Trommelmantel-Verbindungsnaht und eventuell auch der übrigen Trommelmantelflächen im Vordergrund steht, ist die Schraubverbindung die sicherste Befestigungsmethode.The fastening elements on the strip-shaped elements are particularly advantageous Mounting parts threaded holes and those for connection between the drum shell and the drivers screws. If the reinforcement of the drum jacket connection seam and possibly also the other drum shell surfaces in the foreground the screw connection is the safest fastening method.

In dieser Frage etwa ebenbürtig dürfte eine Ausführungsvariante der Erfindung sein, bei der die Befestigungselemente an den streifenförmigen Montageteilen Löcher und diejenigen zur Verbindung zwischen dem Trommelmantel und den Mitnehmern Niete sind. Diese Befestigungsmethode wird wegen der Kostenvorteile gegenüber der Verschraubung möglicherweise vorzuziehen sein.In this question, an embodiment variant of the invention should be roughly equal of the fasteners on the strip-shaped mounting parts holes and those rivets for the connection between the drum shell and the drivers. This fastening method is used because of the cost advantages compared to the screw connection may be preferable.

In dieser Beziehung noch preiswerter kann es sein, wenn gemäß einer weiteren Fortbildung der Erfindung die Befestigungselemente an den streifenförmigen Montageteilen angeformte Niete sind, die zur Verbindung des Mitnehmers mit dem Trommelmantel Löcher im Trommelmantel durchdringen.In this regard, it can be even cheaper if according to further training the invention, the fasteners on the strip-shaped assembly parts molded rivets are used to connect the driver to the drum shell Pierce holes in the drum jacket.

Sofern es mehr auf Preisvorteile als auf beste Festigkeitswerte in der Verbindung zwischen den Mitnehmern und dem Trommelmantel ankommt, können die Befestigungselemente an den streifenförmigen Montageteilen angeformte Lappen sein, die zur Verbindung des Mitnehmers mit dem Trommelmantel Schlitze im Trommelmantel durchdringen und auf die Außenfläche des Trommelmantels hin umgebogen sind.Unless there is more to price advantages than best strength values in the connection between the drivers and the drum shell arrives, the fasteners lugs formed on the strip-shaped assembly parts for connection of the driver with the drum jacket penetrate slots in the drum jacket and are bent towards the outer surface of the drum shell.

In allen Fällen wird es besonders vorteilhaft sein, wenn die streifenförmigen Montageteile aus Blech gebildet sind.In all cases it will be particularly advantageous if the strip-shaped assembly parts are formed from sheet metal.

Anhand von in der Zeichnung dargestellten Ausführungsbeispielen ist die Erfindung nachstehend näher erläutert. Es zeigen

Fig. 1
eine schematische Seitenansicht eines mit drei Mitnehmern bestückten Trommelmantels,
Fig. 2
ein einzelner, mit streifenförmigen Montageteilen bestückter Mitnehmer in perspektivischer Ansicht von der offenen Seite her,
Fig. 3
einen Schnitt durch einen erfindungsgemäß ausgestatteten Mitnehmer quer zu seiner Längserstreckung und
Fig. 4
einen Schnitt gemäß Fig. 3 bei einem mit einem biegesteifen Montageteil ausgestatteten Mitnehmer.
The invention is explained in more detail below on the basis of exemplary embodiments illustrated in the drawing. Show it
Fig. 1
1 shows a schematic side view of a drum casing equipped with three drivers,
Fig. 2
a single driver equipped with strip-shaped assembly parts in a perspective view from the open side,
Fig. 3
a section through a driver equipped according to the invention transverse to its longitudinal extent and
Fig. 4
a section of FIG. 3 in a driver equipped with a rigid mounting part.

Fig. 1 zeigt einen gerollten und an der Verbindungsnaht 2 zusammengehaltenen Trommelmantel 1, der auf seiner Innenseite mit drei gleichmäßig verteilten Mitnehmern 3 bestückt ist. Die Form der Mitnehmer 3 hat für die Erfindung keine große Bedeutung; jedoch ist eine Form üblich, die im Querschnitt wenigstens annähernd einem (symmetrischen oder asymmetrischen) Dreieck ähnelt. Im vorliegenden Fall sind die Mitnehmer 3 sogar leicht schraubenförmig gewendelt, so dass sie in ihrer Längserstreckung nicht parallel zu Trommelmittelachse 4 liegen.Fig. 1 shows a rolled drum shell and held together at the connecting seam 2 1, which is equipped with three evenly distributed drivers 3 on its inside is. The shape of the driver 3 is not of great importance for the invention; however a shape is common that has at least approximately one (symmetrical or asymmetrical) triangle. In the present case, the carriers are 3 even slightly helical, so that they do not extend in their longitudinal direction are parallel to the drum center axis 4.

Anhand eines in der Fig. 2 größer dargestellten einzelnen Mitnehmers 3 sind seine Anordnung an der Trommelmantel-Innenseite und die förmliche Ausgestaltung deutlicher zu erkennen. Darin ist ein Ausschnitt des Mantelbleches 1 durch gestrichelte Linien angedeutet. Ferner ist eine fiktive Linie 5 angedeutet, die die Lage der Verbindungsnaht 2 unterhalb des Mitnehmers 3 andeuten könnte und parallel zur Trommelmittelachse 4 liegt.Based on an individual driver 3 shown larger in FIG. 2, its arrangement on the inside of the drum shell and the formal design more clearly to recognize. A section of the cladding sheet 1 is indicated by dashed lines. Furthermore, a fictitious line 5 is indicated, which shows the position of the connecting seam 2 could indicate below the driver 3 and parallel to the drum center axis 4 lies.

Im Innenraum des Mitnehmers 3 sind an seinen Flanken 6 versteifende Strukturen 7 und 9 angebracht, die teilweise einerseits dazu dienen, die Befestigungs-Durchbrüche (hier nicht dargestellt) im Trommelmantel 1 für die Raststücke 8 in der montierten Position des Mitnehmers 3 abzudecken. Andererseits dienen die Strukturen 7 und 9 dazu, die Flanken 6 so zu versteifen, dass sie bei extremen Verformungen des Trommelmantels während starker Belastungen beim hochtourigen Schleudern nicht zusammenbrechen.In the interior of the driver 3 6 stiffening structures 7 and are on its flanks 9 attached, which partly serve the fastening breakthroughs (here not shown) in the drum jacket 1 for the locking pieces 8 in the assembled position of driver 3 to cover. On the other hand, structures 7 and 9 serve the purpose of Stiffen flanks 6 so that they are in extreme deformations of the drum shell do not collapse during heavy loads during high-speed spinning.

Einige (9) der versteifenden Strukturen dienen außerdem dazu, streifenförmige Montageteile 10 zu halten, mit denen die Mitnehmer 3 durch feste Verbindungen stramm am Trommelmantel 1 befestigt werden. Näheres dazu ist aus Fig. 3 und 4 zu entnehmen.Some (9) of the stiffening structures also serve as strip-shaped mounting parts 10 to hold, with which the driver 3 tight at firm connections Drum jacket 1 are attached. Further details can be found in FIGS. 3 and 4.

Die versteifenden Strukturen 9 in Fig. 3 sind nahe der offenen Grundseite 11 des Mitnehmers 3, mit der er an der Innenseite des Trommelmantels 1 verbunden ist, durch jeweils einen Hinterschnitt 12 an jeder Flanke 6 so geformt, dass ein lappenförmiger Endabschnitt 13 eines gekröpften Endes 14 des streifenförmigen Montageteils 10, hier als federnder Blechstreifen ausgebildet, in den Hinterschnitt 12 greifen kann. Das gekröpfte Ende 14 ist dazu federnd ausgebildet, damit der Blechstreifen 10 beim Einsetzen am oberen Abschnitt 15 der versteifenden Struktur 9 vorbeibewegt werden kann. Dabei gleitet die äußerste Kante des lappenförmigen Endabschnitts 13 auf der schrägen Kante 16 des oberen Abschnitts 15 der versteifenden Struktur 9 entlang und fällt schließlich im Hinterschnitt 12 ein. Zur Erleichterung der Einführung des Blechstreifens 10 ist auch sein mittlerer Abschnitt 17, der - bis auf die bogenförmige Auswölbung nach unten - im wesentlichen parallel zum Trommelmantel 1 liegt, federnd ausgebildet.The stiffening structures 9 in FIG. 3 are close to the open base side 11 of the driver 3, with which it is connected on the inside of the drum shell 1 by each formed an undercut 12 on each flank 6 so that a flap-shaped End portion 13 of a cranked end 14 of the strip-shaped mounting part 10, here formed as a resilient sheet metal strip, can engage in the undercut 12. The cranked End 14 is designed to be resilient so that the metal strip 10 when inserted can be moved past the upper section 15 of the stiffening structure 9. there the outermost edge of the tab-shaped end portion 13 slides on the oblique edge 16 of the upper section 15 along the stiffening structure 9 and finally falls in Undercut 12 a. To facilitate the introduction of the metal strip 10 is also middle section 17, which - except for the arched bulge downwards - essentially is parallel to the drum shell 1, resilient.

Der Blechstreifen 10 hat unmittelbar neben jedem gekröpften Ende 14 eine Gewindebohrung 18, in die eine von der Außenseite des Trommelmantels 1 her eingeführte Schraube 19 (Fig. 1) eingedreht werden kann. Diese Schraube 19 zieht den Blechstreifen stramm an die Innenseite des Trommelmantels 1 und bringt damit eine große Krafteinwirkung auf das gekröpfte Ende 14 des Blechstreifens 10. Dadurch zieht das gekröpfte Ende 14 zusammen mit seinem lappenförmigen Andabschitt 13 den oberen Abschnitt 15 der versteifenden Struktur 9 und damit den Mitnehmer 3 stramm an den Trommelmantel 1.The sheet metal strip 10 has a threaded bore immediately next to each cranked end 14 18, into which one is inserted from the outside of the drum shell 1 Screw 19 (Fig. 1) can be screwed in. This screw 19 pulls the metal strip tight to the inside of the drum shell 1 and thus brings a large force on the cranked end 14 of the sheet metal strip 10. This pulls the cranked End 14 together with its tab-shaped Andabschitt 13 the upper section 15 of the stiffening structure 9 and thus the driver 3 tight to the drum jacket 1.

Bei dem in Fig. 4 dargestellten Mitnehmer 3 ist der Blechstreifen 10 zwischen den Gewindebohrungen und den sie durchdringenden Schrauben 19 mit einem biegesteifen Mittelabschnitt 20 ausgestattet, um den Bereich des Trommelmantels 1, an dem der Mittelabschnitt 20 anliegt, besonders auszusteifen. Dies ist insbesondere für die Stabilisierung einer Verbindungsnaht 2 des Trommelmantels 1 von Interesse, die beim Schleudern durch erhöhte Kräfte in Richtung der Mantelumfangslinien zum Aufstellen und Aufreißen neigt. Diesem Effekt würde primär die Zugentlastung der Verbindungsnaht 2 durch den Blechstreifen 10 mit seinem biegesteifen Mittelabschnitt 20 auf die Verbindungsnaht 2 entgegenwirken. Sekundär kann die Stabilisierung der Verbindungsnaht 2 durch den Druck des Blechstreifens 10 auf die Verbindungsnaht 2 entgegenwirken. Dazu kann der Blechstreifen 10 im Mittelabschnitt 20 mit einer Sicke 21 versehen oder besonders dick ausgeführt sein.In the driver 3 shown in Fig. 4, the sheet metal strip 10 is between the threaded holes and the penetrating screws 19 with a rigid Midsection 20 equipped to the area of the drum shell 1 where the Middle section 20 is present, particularly stiffening. This is especially true for stabilization a connecting seam 2 of the drum shell 1 of interest, which at Skidding due to increased forces in the direction of the circumference of the jacket for installation and tearing open. This effect would primarily relieve the strain on the seam 2 through the sheet metal strip 10 with its rigid central portion 20 on the Counteract seam 2. Secondarily, the stabilization of the connecting seam 2 counteract by the pressure of the metal strip 10 on the joint 2. For this purpose, the metal strip 10 can be provided with a bead 21 in the central section 20 or be made particularly thick.

Die Erfindung ist nicht auf die Einzelheiten der hier dargestellten Ausführungsbeispiele beschränkt. Insbesondere kann die Formschlussverbindung zwischen dem streifenförmigen Montageteil 10 und dem Mitnehmer 3 durch andere Formen dargestellt sein. Hierfür sind auch Ausführungen denkbar, bei denen das gekröpfte Ende in einer Weise geformt ist, durch die der lappenförmige Endabschnitt auch seitwärts in Bezug zur Längserstreckung des Montageteils 10 oder in Richtung auf die Mitte des Mitnehmer-Hohlraums abgebogen ist. Dabei kann das gekröpfte Ende mit einer so hohen Federkraft ausgebildet werden, dass sich der Blechstreifen zum Einführen in die Montagelage nicht mehr elastisch zusammendrücken lässt. Dann kann der Hinterschnitt 12 so ausgebildet sein, dass sich das Montageteil 10 von der Seite des Hinterschnitts 12 aus einführen lässt.The invention is not based on the details of the exemplary embodiments shown here limited. In particular, the positive connection between the strip-shaped Mounting part 10 and the driver 3 may be represented by other shapes. Therefor Designs are also conceivable in which the cranked end is shaped in a way through which the tab-shaped end section is also laterally with respect to the longitudinal extent of the mounting part 10 or towards the center of the driver cavity is turned. The cranked end can with such a high spring force be formed so that the sheet metal strip is not for insertion into the assembly position compress more elastically. The undercut 12 can then be formed in this way be that the mounting part 10 insert from the side of the undercut 12 leaves.

Das streifenförmige Montageteil 10 kann entgegen den Ausführungsbeispielen auch ohne ein abgekröpftes Ende 14 dieselbe Wirkung erzielen, wenn seine formschlüssige Befestigung im Mitnehmer auf andere Weise gelingt. Beispielsweise können die Enden des Streifens gerade ausgebildet sein, wenn das gesamte Montageteil etwas tiefer im Mitnehmer angeordnet ist und die Befestigungselemente (z.B. Gewindelöcher) allein weiter zur Grundlinie des Mitnehmers hin ausgewölbt sind.The strip-shaped mounting part 10 can also, contrary to the exemplary embodiments achieve the same effect without a cranked end 14 if its positive Fastening in the driver succeeds in another way. For example, the ends of the strip should be straight when the entire assembly part is slightly lower in Driver is arranged and the fasteners (e.g. threaded holes) alone are arched further to the base line of the driver.

Auch kann das streifenförmige Montageteil mehrteilig ausgebildet sein, um das Einsetzen in den Mitnehmer evtl. zu erleichtern.The strip-shaped mounting part can also be formed in several parts in order to insert it to facilitate in the driver.

Ferner können die Befestigungselemente völlig andersartig ausgestaltet sein, ohne die Erfindung zu verlassen. Beispielsweise können statt der Gewindelöcher einfache Löcher vorgesehen sein und statt der Schrauben Niete. Dabei können die Niete aus losen Teilen bestehen oder einstückiger Bestandteil des streifenförmigen Montageteils oder des Trommelmantels sein. Ferner sind an das streifenförmige Montageteil oder an den Trommelmantel angeformte Lappen denkbar, die durch form- und lagegleiche Durchbrüche im jeweiligen Gegenteil (Trommelmantel oder streifenförmiges Montageteil) gesteckt und dahinter jeweils umgebogen sind.Furthermore, the fasteners can be designed completely different, without the Leaving invention. For example, simple holes can be used instead of the threaded holes be provided and rivets instead of the screws. The rivets can be made from loose parts exist or integral part of the strip-shaped assembly part or Drum shell. Furthermore, to the strip-shaped assembly part or to the Drum-shaped flaps formed by openings of the same shape and position inserted in the opposite direction (drum jacket or strip-shaped assembly part) and are bent behind each.

Claims (9)

Wäschetrommel für eine Trommelwaschmaschine mit wenigstens einem an der Innenseite des Trommelmantels (1) mittels Befestigungselementen (19) befestigten Mitnehmer (3) aus einem zum Trommelmantel hin offenen Hohlkörper mit einer Querschnittsfläche, die einem Dreieck ähnlich ist, und versteifenden Strukturen (7, 9) an den Innenseiten seiner Flanken (6), dadurch gekennzeichnet, dass im Bereich wenigstens eines Teils der Strukturen (9) streifenförmige Montageteile (10) mit einem im wesentlichen parallel zur Fläche des Trommelmantels (1) liegenden Abschnitt (17, 20) formschlüssig mit der Innenseite der Flanken (6) verbunden sind und die Abschnitte (17, 20) wenigstens zwei Befestigungselemente (18, 19) aufweisen, mittels denen der Mitnehmer (3) am Trommelmantel (1) befestigt ist.Laundry drum for a drum washing machine with at least one driver (3) fastened to the inside of the drum shell (1) by means of fastening elements (19) made of a hollow body open to the drum shell with a cross-sectional area that is similar to a triangle, and stiffening structures (7, 9) on the inner sides of its flanks (6), characterized in that in the area of at least part of the structures (9) strip-shaped assembly parts (10) with a section (17, 20) lying essentially parallel to the surface of the drum shell (1) with a positive fit Are connected on the inside of the flanks (6) and the sections (17, 20) have at least two fastening elements (18, 19), by means of which the driver (3) is fastened to the drum casing (1). Wäschetrommel nach Anspruch 1, dadurch gekennzeichnet, dass das streifenförmige Montageteil (10) an seinen Enden in Richtung des Innenraums des Mitnehmers (3) gekröpfte Bereiche (14) aufweist, die in lappenförmigen Endabschnitten (13) auslaufen, mit denen das streifenförmige Montageteil (10) unter Hinterschnitte (12) der zugeordneten Strukturen (9, 15) fasst.Laundry drum according to claim 1, characterized in that the strip-shaped mounting part (10) has cranked areas (14) at its ends in the direction of the interior of the driver (3), which end in tab-shaped end sections (13) with which the strip-shaped mounting part (10 ) undercuts (12) of the assigned structures (9, 15). Wäschetrommel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das streifenförmige Montageteil (10) im Bereich zwischen den Befestigungselementen (18) biegesteif ausgestattet ist.Laundry drum according to claim 1 or 2, characterized in that the strip-shaped mounting part (10) in the region between the fastening elements (18) is equipped to be rigid. Wäschetrommel nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Bereiche um die Befestigungselemente (18) und/ oder des abgekröpften Endes (14) des streifenförmigen Montageteils (10) elastisch ausgebildet sind.Laundry drum according to claim 2 or 3, characterized in that the areas around the fastening elements (18) and / or the bent end (14) of the strip-shaped mounting part (10) are elastic. Wäschetrommel nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Befestigungselemente an den streifenförmigen Montageteilen (10) Gewindelöcher (18) und diejenigen zur Verbindung zwischen dem Trommelmantel (1) und den Mitnehmern (3) Schrauben (19) sind.Laundry drum according to one of the preceding claims, characterized in that the fastening elements on the strip-shaped mounting parts (10) are threaded holes (18) and those for connecting the drum jacket (1) and the drivers (3) are screws (19). Wäschetrommel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Befestigungselemente (18) an den streifenförmigen Montageteilen (10) Löcher und diejenigen zur Verbindung zwischen dem Trommelmantel (1) und den Mitnehmern Niete sind.Laundry drum according to one of claims 1 to 4, characterized in that the fastening elements (18) on the strip-shaped assembly parts (10) are holes and those for connecting the drum jacket (1) and the drivers are rivets. Wäschetrommel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Befestigungselemente (18) an den streifenförmigen Montageteilen (10) angeformte Niete sind, die zur Verbindung des Mitnehmers mit dem Trommelmantel (1) Löcher im Trommelmantel durchdringen.Laundry drum according to one of claims 1 to 4, characterized in that the fastening elements (18) on the strip-shaped mounting parts (10) are formed rivets which penetrate holes in the drum shell to connect the driver to the drum shell (1). Wäschetrommel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Befestigungselemente (18) an den streifenförmigen Montageteilen (10) angeformte Lappen sind, die zur Verbindung des Mitnehmers mit dem Trommelmantel (1) Schlitze im Trommelmantel durchdringen und auf die Außenfläche des Trommelmantels hin umgebogen sind.Laundry drum according to one of claims 1 to 4, characterized in that the fastening elements (18) on the strip-shaped mounting parts (10) are molded tabs which penetrate slots in the drum shell to connect the driver to the drum shell (1) and on the outer surface of the drum shell are bent over. Wäschetrommel nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die streifenförmigen Montageteile (10) aus Blech gebildet sind.Laundry drum according to one of the preceding claims, characterized in that the strip-shaped assembly parts (10) are formed from sheet metal.
EP03027295A 2002-12-17 2003-11-28 Washing drum for a drum type washing maschine Expired - Lifetime EP1431438B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10259059 2002-12-17
DE10259059A DE10259059B4 (en) 2002-12-17 2002-12-17 Laundry drum for a drum washing machine

Publications (2)

Publication Number Publication Date
EP1431438A1 true EP1431438A1 (en) 2004-06-23
EP1431438B1 EP1431438B1 (en) 2009-01-28

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US (1) US7287402B2 (en)
EP (1) EP1431438B1 (en)
AT (1) ATE422004T1 (en)
DE (2) DE10259059B4 (en)
PL (1) PL364096A1 (en)

Cited By (4)

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WO2013050347A1 (en) * 2011-10-05 2013-04-11 BSH Bosch und Siemens Hausgeräte GmbH Laundry drum
EP2631342A1 (en) * 2012-02-27 2013-08-28 Electrolux Home Products Corporation N.V. A laundry drum for a laundry treating machine
WO2016202476A1 (en) * 2015-06-16 2016-12-22 BSH Hausgeräte GmbH Driver and driver arrangement for a laundry drum of a domestic appliance for treating laundry
CN106400393A (en) * 2016-10-08 2017-02-15 珠海格力电器股份有限公司 Washing machine roller and washing machine

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DE102004043716A1 (en) * 2004-09-09 2006-03-16 BSH Bosch und Siemens Hausgeräte GmbH Method for fastening plastic drivers in laundry drums
KR100662447B1 (en) * 2005-01-07 2007-01-02 엘지전자 주식회사 drum of drum type washing machine
ES2276627B1 (en) * 2005-12-02 2008-04-16 Bsh Electrodomesticos España, S.A. WASHER DRUM.
KR100725742B1 (en) * 2006-01-11 2007-06-08 삼성전자주식회사 Drum type washing machine
DE102006007066A1 (en) * 2006-02-15 2007-08-16 BSH Bosch und Siemens Hausgeräte GmbH Washing laundry drum
KR100672339B1 (en) * 2006-03-29 2007-01-24 엘지전자 주식회사 Drum of drum type washing machine
DE102006029481A1 (en) * 2006-06-27 2008-01-03 BSH Bosch und Siemens Hausgeräte GmbH Modular system for laundry drums of laundry care appliances
ES2332346B1 (en) * 2008-03-03 2011-02-02 Bsh Electrodomesticos España, S.A. WASHER DRUM.
KR102449509B1 (en) * 2016-01-05 2022-09-29 엘지전자 주식회사 Lifter for laundary treating apparatus

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Publication number Priority date Publication date Assignee Title
WO2013050347A1 (en) * 2011-10-05 2013-04-11 BSH Bosch und Siemens Hausgeräte GmbH Laundry drum
CN103842575A (en) * 2011-10-05 2014-06-04 Bsh博世和西门子家用电器有限公司 Laundry drum
RU2566489C1 (en) * 2011-10-05 2015-10-27 Бсх Хаусгерете Гмбх Drum for laundry
CN103842575B (en) * 2011-10-05 2016-03-02 Bsh家用电器有限公司 Laundry wheel
EP2631342A1 (en) * 2012-02-27 2013-08-28 Electrolux Home Products Corporation N.V. A laundry drum for a laundry treating machine
WO2016202476A1 (en) * 2015-06-16 2016-12-22 BSH Hausgeräte GmbH Driver and driver arrangement for a laundry drum of a domestic appliance for treating laundry
CN106400393A (en) * 2016-10-08 2017-02-15 珠海格力电器股份有限公司 Washing machine roller and washing machine
CN106400393B (en) * 2016-10-08 2018-12-25 珠海格力电器股份有限公司 Washing machine drum and washing machine

Also Published As

Publication number Publication date
DE10259059B4 (en) 2008-07-31
US20040129036A1 (en) 2004-07-08
DE10259059A1 (en) 2004-07-22
EP1431438B1 (en) 2009-01-28
PL364096A1 (en) 2004-06-28
ATE422004T1 (en) 2009-02-15
DE50311141D1 (en) 2009-03-19
US7287402B2 (en) 2007-10-30

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