EP2830475B1 - Spray arm for a dishwasher having two spray-arm parts - Google Patents

Spray arm for a dishwasher having two spray-arm parts Download PDF

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Publication number
EP2830475B1
EP2830475B1 EP12829206.7A EP12829206A EP2830475B1 EP 2830475 B1 EP2830475 B1 EP 2830475B1 EP 12829206 A EP12829206 A EP 12829206A EP 2830475 B1 EP2830475 B1 EP 2830475B1
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EP
European Patent Office
Prior art keywords
spray arm
wall
groove
designed
latching element
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EP12829206.7A
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German (de)
French (fr)
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EP2830475A1 (en
Inventor
Heinz Hermann
Marc Vogt
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Etimex Technical Components GmbH
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Etimex Technical Components GmbH
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Priority to PL12829206T priority Critical patent/PL2830475T3/en
Publication of EP2830475A1 publication Critical patent/EP2830475A1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4278—Nozzles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A47L15/23—Rotary spraying devices moved by means of the sprays

Definitions

  • the invention relates to a spray arm for a dishwasher according to the preamble of claim 1, which in particular comprises a first Sprüharmteil and a second Sprüharmteil, of which the first Sprüharmteil has a substantially extending over the circumference of the first Sprüharmteils groove.
  • a spray arm is off US 3 444 870 A known.
  • rotating spray arms are provided for introducing and distributing washing water in an associated washing compartment.
  • the spray arms are usually composed of two Sprüharm kind that enclose a cavity. In the cavity, the washing water is introduced, which is then sprayed through nozzles in the washing space of the dishwasher, wherein the nozzles are arranged on at least one of the Sprüharmmaschine.
  • US 4 172 463 A is a rotatable disc element for spraying cleaning water of a dishwasher known.
  • the disc member is formed with a base plate on the underside of which a first and a second rib member are provided which extend in parallel and equidistantly along a diametral axis of the disc member.
  • Each rib member defines a parallel longitudinal groove by having each rib member configured with an outer and an inner rib, respectively.
  • Each inner rib has an inwardly extending groove on its outer wall.
  • a U-shaped cover member is provided which sealingly seals a channel formed with both rib elements and the base plate.
  • the cover element comprises a respective longitudinally extending first and second side wall, each of which has an inwardly extending projection. Each projection engages connecting into the corresponding groove of the inner rib.
  • the invention has for its object to provide a dishwasher with a spray arm, the Sprüharmmaschine are particularly inexpensive to produce and assemble, while also meet the requirements for tightness over the life time away.
  • a spray arm for a dishwasher having a first Sprüharmteil and a second Sprüharmteil, of which the second Sprüharmteil extending substantially over the circumference of the second Sprüharmteils web wall, the web wall having a first locking element, wherein the first Sprüharmteil has a substantially extending over the circumference of the first Sprüharmteils Groove, which is formed by a first, inner groove wall and a second outer groove wall, and the web wall is designed engaging in the groove, wherein the first locking element for producing a Locking connection between the first and the second Sprüharmteil with a second locking element is designed cooperatively, which is arranged on one of the groove walls, wherein the second, outer groove wall is designed so higher than the first, inner groove wall, that the second, outer groove wall so far over the bridge wall away protrudes that, when the second Sprüharmteil is brought to the first Sprüharmteil, sufficient space for the arrangement of the locking connection is present underneath.
  • the solution according to the invention provides a cost-producible, outwardly sealed, fluid-carrying cavity.
  • the cavity is sealed without additional measures already after the connection of the two Sprüharmmaschine with each other. It does not require a separate operation to seal the attached components.
  • the seal is ensured solely by the groove and the web wall inserted therein, while the components are also permanently coupled together by the intended locking connection.
  • the inner groove wall serves to additionally support the web wall and thus increases the strength of the connection.
  • the groove structure provided with the invention entails that the side walls of the spraying device are designed to be double. This is advantageous in terms of torsional rigidity and the stability of the mounted spray arm.
  • the double wall design is located where the highest loads, shear forces and pressure impulses are combined with the lowest bending stiffness.
  • the solution according to the invention can be very well integrated into an automated production with short cycle times, in particular with regard to a short-cycle injection molding process for producing the respective Sprüharmmaschine.
  • a spray arm can be produced, which also meets high aesthetic requirements, as they are placed on a spray arm as a visible part in a dishwasher today.
  • the first detent element on the outside of the web wall and the second detent element on the second, outer groove wall are formed.
  • the latching connection of this type is concealed from the outside between the outer groove wall and the web wall for the viewer.
  • locking cams should not be visible, so far such locking cams are e.g. used only on spray arms of the so-called third spray level, where the spray arm is located very close to the ceiling of the water tank. There, not only the visibility is limited to the spray arm, but it is also required no high tightness.
  • the second, outer groove wall is designed to be higher than the first, inner groove wall.
  • the outer groove wall then protrudes particularly far beyond the web wall, whereby sufficient space for the arrangement of a snap-in connection is present underneath.
  • the web wall can be stepped introduced into the groove with the differently highly shaped groove walls, wherein it is first guided along the outer groove wall and only then introduced by means of the inner groove wall for sealing in the rear or deeper portion of the groove. This gradual insertion into the groove is particularly advantageous with regard to automated assembly and the resulting impermeability of the assembly.
  • the first, inner groove wall are further preferably designed at its edge directed to the web wall with an insertion bevel for insertion of the web wall in the groove
  • the second, outer groove wall at its edge directed to the web wall with an insertion bevel designed to insert the web wall into the groove
  • / or the web wall is designed on at least one of its edges directed to the groove walls with an insertion bevel for insertion of the web wall into the groove.
  • the first latching element is preferably designed as a latching nose and the second latching element as a latching recess.
  • the first latching element and the second latching element are further preferably designed to extend substantially over the entire circumference of the first and the second Sprüharmteils.
  • the latching connection which is substantially completely circumferential in this way, the two spray arm parts are uniformly coupled to one another over their entire circumference. The risk of local loosening, loosening or breaking of the connection is therefore minimized at the same time relatively low clamping force.
  • the circumferential latching can advantageously be combined with a circumferential sealing lip on at least one of the Sprüharmmaschine that presses against the counterpart and engages over the entire circumference in the latching when latching.
  • a sealing lip is not mandatory.
  • first locking element and the second locking element are designed to be interrupted at predetermined distances over a small distance at the periphery of the first and the second Sprüharmteils.
  • Such interruptions of the locking elements preferably extend over a distance of 0.5 cm to 1.5 cm, more preferably about 1.0 cm and are particularly in view of the design of the injection molds used for Sprüharmmaschine advantage.
  • the solution according to the invention is also outstandingly suitable for providing at least one channel for receiving a mass connecting the first spray arm part to the second spray arm part from the outside into the groove.
  • the introduced into the channel mass can ensure additional sealing and cohesive connection of the two Sprüharmmaschine, if desired.
  • a spray arm 10 of a household dishwasher is shown having a vertical hollow cylindrical hub portion 12, projecting horizontally from the two arm portions 14 and 16 in opposite directions.
  • a spray arm 10 When installed in the dishwasher state of the spray arm 10 is supplied through the hub portion 12 through with water under pressure, which is then sprayed from nozzles 18, which are arranged distributed on the spray arm 10.
  • the nozzles 18 are distributed on an upper side 19 of an upper, cup-shaped Sprüharmteils 20 and possibly also on an underside 22 of a lower, also cup-shaped Sprüharmteils 24.
  • the Sprüharmmaschine 20 and 24 are made of plastic by injection molding or alternatively of metal, especially stainless steel, produced by deep drawing and each with their shell shape to each other so created that a cavity 26 is formed.
  • the seam or connection region between the cups placed in such a manner is sealed and designed to be positively coupled.
  • the upper Sprüharmteil 20 a substantially extending over its circumference groove 28 is formed, which is formed by a first, inner groove wall 30 and a second, outer groove wall 32.
  • the lower Sprüharmteil 24 a substantially also over its entire circumference extending and engaging in the groove 28 web wall 34 is formed.
  • the web wall 34 is designed at its top so high that it up to the bottom of the groove 28 and there in a first, upper sealing region 36 (see Fig. 6 ) sealed by a frictional pressure against the upper Sprüharmteil 20 becomes. Furthermore, the groove 28 is designed so narrow that the web wall 34 is pushed laterally when inserted into the groove 28 against the inner groove wall 30 and there in a second, lateral sealing region 38 (see again Fig. 6 ) also seals against the upper Sprüharmteil 20. Alternatively, the web wall 34 is designed so high and / or wide that it comes to rest against the walls of the groove 28 without greater contact pressure. In this case, a seal between the upper Sprüharmteil 20 and the lower Sprüharmteil 24 is created substantially solely due to the labyrinth geometry of groove 28 and web wall 34.
  • a locking connection 40 is further provided by means of which the two parts are positively coupled to each other.
  • the positive coupling is produced without a separate step in the assembly of Sprüharmteil 20 and Sprüharmteil 24 during assembly of the spray arm 10.
  • the web wall 34 on the lower Sprüharmteil 24 has for this purpose on the outside a first latching element 41, which cooperates with a second latching element 42 on the inside of the outer groove wall 32.
  • Such locking connection 40 is not visible to the viewer of the spray arm 10 from the outside.
  • the first latching element 41 is designed as a latching lug and the second latching element 42 as a latching recess extending substantially over the entire circumference of the first and the second Sprüharmteils 20 and 24 and interrupted only at the periphery at predetermined distances over a small distance 44 are.
  • the second, outer groove wall 32 is designed to be higher than the first, inner groove wall 30 and protrudes far beyond the web wall 34 when the lower Sprüharmteil 24 is brought to the upper Sprüharmteil 20. Furthermore, the first, inner groove wall 30 is designed on its edge directed to the web wall 34 with an insertion bevel 46 for insertion of the web wall 34 in the groove 28, the second, outer groove wall 32 is directed to its web wall 34 edge with an insertion bevel 48 also designed for insertion of the web wall 34 in the groove 28, and the web wall 34 itself is designed at its two facing the groove walls 30 and 32 edges, each with an insertion bevel 50 and 52. With these chamfers 46, 48, 50 and 52 a total of the insertion of the web wall 34 in the groove 28 is possible even with larger dimensional differences between Sprüharmteil 20 and Sprüharmteil 24.
  • the Fig. 7 Finally shows a variant of a Sprüharms 10, in which at the upper Sprüharmteil 20 at its upper edge region distributed over the handling of several channels 54 are provided for receiving a the first Sprüharmteil 20 with the second Sprüharmteil 24 mass.
  • the mass can be introduced during assembly for additional sealing and cohesive connection of the two Sprüharmmaschine 20 and 24 in the channels 54 in order to distribute in particular within the groove 28 above the web wall 34.
  • the Sprüharmteil 20 is also designed with a groove 28, an inner groove wall 30 and an outer groove wall 32.
  • a substantially vertical slot 56 is formed in each case approximately in the middle of the arm section 14 or 16.
  • the slot 56 extends substantially over the entire height of the groove wall 32 and is open to the outside or accessible from the outside.
  • a rib 58 is inserted in a form-fitting manner, which is formed on the web wall 34 of the lower spray arm part 24 at the corresponding location on the outside.
  • a spray arm 10 is illustrated in which functionally identical vertical slots 56 are formed on the inner groove wall 30 and ribs 58 on the inside of the web wall 34.
  • Such an arrangement of slots 56 and positive ribs 58 results in a stiffening effect that is not visible from the outside.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Fluid-Pressure Circuits (AREA)

Description

Hintergrund der ErfindungBackground of the invention

Die Erfindung betrifft einen Sprüharm für einen Geschirrspüler gemäß dem Oberbegriff des Anspruchs 1, der insbesondere ein erstes Sprüharmteil und ein zweites Sprüharmteil aufweist, von denen das erste Sprüharmteil eine sich im Wesentlichen über den Umfang des ersten Sprüharmteils erstreckende Nut aufweist. Ein solcher Sprüharm ist aus US 3 444 870 A bekannt.The invention relates to a spray arm for a dishwasher according to the preamble of claim 1, which in particular comprises a first Sprüharmteil and a second Sprüharmteil, of which the first Sprüharmteil has a substantially extending over the circumference of the first Sprüharmteils groove. Such a spray arm is off US 3 444 870 A known.

Bei Geschirrspülern, die insbesondere als Haushaltsmaschine verwendet werden, sind zum Einbringen und Verteilen von Waschwasser in einen zugehörigen Spülraum rotierende Sprüharme vorgesehen. Die Sprüharme sind in der Regel aus zwei Sprüharmteilen zusammengesetzt, die einen Hohlraum umschließen. In den Hohlraum wird das Waschwasser eingebracht, welches dann durch Düsen in den Waschraum des Geschirrspülers ausgesprüht wird, wobei die Düsen an mindestens einem der Sprüharmteile angeordnet sind.In dishwashers, which are used in particular as household appliance, rotating spray arms are provided for introducing and distributing washing water in an associated washing compartment. The spray arms are usually composed of two Sprüharmteilen that enclose a cavity. In the cavity, the washing water is introduced, which is then sprayed through nozzles in the washing space of the dishwasher, wherein the nozzles are arranged on at least one of the Sprüharmteile.

Um eine ordnungsgemäße Funktion eines solchen Sprüharms zu gewährleisten, muss dessen Hohlraum von den beiden Sprüharmteilen dicht umschlossen sein. Ferner müssen die Sprüharmteile kostengünstig herstellbar und montierbar sein, denn der Kostendruck bei der Herstellung und der Montage derartiger Geschirrspüler ist gerade im Bereich der Haushaltsmaschinen, aber auch im Bereich der Industriemaschinen sehr hoch.In order to ensure proper functioning of such a spray arm, its cavity must be tightly enclosed by the two Sprüharmteilen. Furthermore, the Sprüharmteile must be inexpensive to produce and assemble, because the cost pressure in the manufacture and assembly of such dishwasher is very high in the field of household machines, but also in the field of industrial machinery.

Aus US 4 172 463 A ist ein rotierbares Scheibenelement zum Sprühen von Reinigungswasser eines Geschirrspülers bekannt. Das Scheibenelement ist mit einer Basisplatte gebildet, an deren Unterseite ein erstes und ein zweites Rippenelement vorgesehen sind, die sich parallel und gleich beabstandet entlang einer diametralen Achse des Scheibenelements erstrecken. Jedes Rippenelement definiert eine parallele longitudinale Nut, indem jedes Rippenelement jeweils mit einer äußeren und einer inneren Rippe gestaltet ist. Jede innere Rippe weist an ihrer Außenwand eine sich nach innen erstreckende Nut auf. Zudem ist ein U-förmiges Abdeckelement vorgesehen, das einen mit beiden Rippenelementen und der Basisplatte gebildeten Kanal abdichtend verschließt. Dazu umfasst das Abdeckelement eine jeweils longitudinal verlaufende erste und zweite Seitenwand, von denen jede einen nach innen sich erstreckenden Vorsprung aufweist. Jeder Vorsprung greift verbindend in die entsprechend zugehörige Nut der inneren Rippe ein.Out US 4 172 463 A is a rotatable disc element for spraying cleaning water of a dishwasher known. The disc member is formed with a base plate on the underside of which a first and a second rib member are provided which extend in parallel and equidistantly along a diametral axis of the disc member. Each rib member defines a parallel longitudinal groove by having each rib member configured with an outer and an inner rib, respectively. Each inner rib has an inwardly extending groove on its outer wall. In addition, a U-shaped cover member is provided which sealingly seals a channel formed with both rib elements and the base plate. For this purpose, the cover element comprises a respective longitudinally extending first and second side wall, each of which has an inwardly extending projection. Each projection engages connecting into the corresponding groove of the inner rib.

Zugrundeliegende AufgabeUnderlying task

Der Erfindung liegt die Aufgabe zugrunde, einen Geschirrspüler mit einem Sprüharm zu schaffen, dessen Sprüharmteile besonders kostengünstig herstellbar und montierbar sind, dabei aber auch zugleich die Anforderungen hinsichtlich Dichtigkeit über die Lebensdauer hinweg erfüllen.The invention has for its object to provide a dishwasher with a spray arm, the Sprüharmteile are particularly inexpensive to produce and assemble, while also meet the requirements for tightness over the life time away.

Erfindungsgemäße LösungInventive solution

Diese Aufgabe ist erfindungsgemäß mit einem Sprüharm für einen Geschirrspüler gelöst, der ein erstes Sprüharmteil und ein zweites Sprüharmteil aufweist, von denen das zweite Sprüharmteil eine sich im Wesentlichen über den Umfang des zweiten Sprüharmteils erstreckende Stegwand aufweist, wobei die Stegwand ein erstes Rastelement aufweist, wobei das erste Sprüharmteil eine sich im Wesentlichen über den Umfang des ersten Sprüharmteils erstreckende Nut aufweist, die von einer ersten, inneren Nutwand und einer zweiten, äußeren Nutwand gebildet ist, und die Stegwand in die Nut eingreifend gestaltet ist, wobei das erste Rastelement zum Herstellen einer Rastverbindung zwischen dem ersten und dem zweiten Sprüharmteil mit einem zweiten Rastelement zusammenwirkend gestaltet ist, das an einer der Nutwände angeordnet ist, wobei die zweite, äußere Nutwand derart höher als die erste, innere Nutwand gestaltet ist, dass die zweite, äußere Nutwand so weit über die Stegwand hinweg ragt, dass, wenn das zweite Sprüharmteil an das erste Sprüharmteil herangeführt ist, ausreichend Raum für die Anordnung der Rastverbindung darunter vorhanden ist. Die erfindungsgemäße Lösung schafft einen kostengünstig herstellbaren, nach außen hin abgedichteten, fluidführenden Hohlraum. Der Hohlraum ist dabei ohne zusätzliche Maßnahmen bereits nach der Verbindung der beiden Sprüharmteile miteinander abgedichtet. Es bedarf keines gesonderten Arbeitsgangs, um die aneinander angesetzten Bauteile abzudichten. Die Abdichtung ist allein durch die Nut und die darin eingesetzte Stegwand sichergestellt, während die Bauteile zugleich durch die vorgesehene Rastverbindung dauerhaft miteinander gekoppelt sind. Die innere Nutwand dient zur zusätzlichen Abstützung der Stegwand und erhöht auf diese Weise die Festigkeit der Verbindung. Die mit der Erfindung vorgesehene Nutstruktur bringt es mit sich, dass die Seitenwände der Sprühvorrichtung doppelt ausgelegt sind. Dies ist vorteilhaft im Hinblick auf die Verwindungssteifigkeit und die Stabilität des montierten Sprüharms. Die doppelte Wandgestaltung befindet sich dort, wo sich die größten Belastungen, Scherkräfte und Druckimpulse bei gleichzeitig geringster Biegesteifigkeit befinden.This object is achieved according to the invention with a spray arm for a dishwasher having a first Sprüharmteil and a second Sprüharmteil, of which the second Sprüharmteil extending substantially over the circumference of the second Sprüharmteils web wall, the web wall having a first locking element, wherein the first Sprüharmteil has a substantially extending over the circumference of the first Sprüharmteils Groove, which is formed by a first, inner groove wall and a second outer groove wall, and the web wall is designed engaging in the groove, wherein the first locking element for producing a Locking connection between the first and the second Sprüharmteil with a second locking element is designed cooperatively, which is arranged on one of the groove walls, wherein the second, outer groove wall is designed so higher than the first, inner groove wall, that the second, outer groove wall so far over the bridge wall away protrudes that, when the second Sprüharmteil is brought to the first Sprüharmteil, sufficient space for the arrangement of the locking connection is present underneath. The solution according to the invention provides a cost-producible, outwardly sealed, fluid-carrying cavity. The cavity is sealed without additional measures already after the connection of the two Sprüharmteile with each other. It does not require a separate operation to seal the attached components. The seal is ensured solely by the groove and the web wall inserted therein, while the components are also permanently coupled together by the intended locking connection. The inner groove wall serves to additionally support the web wall and thus increases the strength of the connection. The groove structure provided with the invention entails that the side walls of the spraying device are designed to be double. This is advantageous in terms of torsional rigidity and the stability of the mounted spray arm. The double wall design is located where the highest loads, shear forces and pressure impulses are combined with the lowest bending stiffness.

Es bedarf mit der erfindungsgemäßen Lösung insbesondere keiner gesonderten Abdichtungs- oder Verbindungs-Prozessschritte, wie etwa bei einem Spiegelschweißen, einem Vibrationsschweißen oder einem Umspritzen herkömmlicher Sprüharmteile. Zusätzlich ist die Gefahr von Undichtigkeiten oder Verzug, wie sie bei herkömmlichen Herstellungsverfahren von Sprüharmen durchaus auftritt, vermieden. Daher ist erfindungsgemäß der apparative Aufwand für die Herstellung und Montage sowie die damit verbundenen Investitionskosten vermindert. Darüber hinaus lässt sich die erfindungsgemäße Lösung sehr gut in eine automatisierte Fertigung mit kurzen Taktzeiten, insbesondere im Hinblick auf einen kurz getakteten Spritzgussvorgang zum Herstellen der jeweiligen Sprüharmteile, integrieren. Mit der erfindungsgemäßen Lösung kann ein Sprüharm hergestellt werden, der auch hohen ästhetischen Ansprüchen gerecht wird, wie sie an einen Sprüharm als Sichtteil in einem Geschirrspüler heutzutage gestellt werden.In particular, no separate sealing or joining process steps are required with the solution according to the invention, such as in mirror welding, vibration welding or encapsulation of conventional spray arm parts. In addition, the risk of leakage or distortion, as it occurs in conventional manufacturing processes of spray arms quite avoided. Therefore, according to the invention, the expenditure on equipment for the production and assembly and the associated investment costs is reduced. In addition, the solution according to the invention can be very well integrated into an automated production with short cycle times, in particular with regard to a short-cycle injection molding process for producing the respective Sprüharmteile. With the solution according to the invention, a spray arm can be produced, which also meets high aesthetic requirements, as they are placed on a spray arm as a visible part in a dishwasher today.

Dazu sind insbesondere das erste Rastelement außen an der Stegwand und das zweite Rastelement an der zweiten, äußeren Nutwand ausgebildet. Die derartige Rastverbindung liegt zwischen der äußeren Nutwand und der Stegwand für den Betrachter von außen verdeckt. Es sind also bei dieser Lösung nicht etwa Rastnocken zu erkennen, wie sie herkömmlich bei anderen Anwendungen bekannt sein mögen. Weil solche Rastnocken nicht sichtbar sein sollen, werden bisher solche Rastnocken z.B. nur an Sprüharmen der so genannten dritten Sprühebene verwendet, bei der sich der Sprüharm sehr dicht unterhalb der Decke des Spühlbehälters befindet. Dort ist nicht nur die Sichtbarkeit auf den Sprüharm eingeschränkt, sondern es wird auch keine hohe Dichtigkeit verlangt.For this purpose, in particular the first detent element on the outside of the web wall and the second detent element on the second, outer groove wall are formed. The latching connection of this type is concealed from the outside between the outer groove wall and the web wall for the viewer. Thus, it is not possible to detect locking cams in this solution, as they may conventionally be known in other applications. Because such locking cams should not be visible, so far such locking cams are e.g. used only on spray arms of the so-called third spray level, where the spray arm is located very close to the ceiling of the water tank. There, not only the visibility is limited to the spray arm, but it is also required no high tightness.

Bei der erfindungsgemäßen Lösung ist die zweite, äußere Nutwand höher als die erste, innere Nutwand gestaltet. Die äußere Nutwand ragt dann besonders weit über die Stegwand hinweg, wodurch ausreichend Raum für die Anordnung einer Rastverbindung darunter vorhanden ist. Zugleich kann mit den unterschiedlich hoch gestalteten Nutwänden die Stegwand gestuft in die Nut eingeführt werden, wobei sie zunächst entlang der äußeren Nutwand geführt und erst danach mittels der inneren Nutwand zum Abdichten in den hinteren bzw. tieferen Abschnitt der Nut eingebracht wird. Dieses gestufte Einführen in die Nut ist im Hinblick auf eine automatisierte Montage und die dabei erzielbare Dichtheit der Baugruppe besonders vorteilhaft.In the solution according to the invention, the second, outer groove wall is designed to be higher than the first, inner groove wall. The outer groove wall then protrudes particularly far beyond the web wall, whereby sufficient space for the arrangement of a snap-in connection is present underneath. At the same time, the web wall can be stepped introduced into the groove with the differently highly shaped groove walls, wherein it is first guided along the outer groove wall and only then introduced by means of the inner groove wall for sealing in the rear or deeper portion of the groove. This gradual insertion into the groove is particularly advantageous with regard to automated assembly and the resulting impermeability of the assembly.

Um die Montierbarkeit der erfindungsgemäßen Baugruppe weiter zu verbessern, sind vorzugsweise ferner die erste, innere Nutwand an ihrem zur Stegwand gerichteten Rand mit einer Einführschräge zum Einführen der Stegwand in die Nut gestaltet, die zweite, äußere Nutwand an ihrem zur Stegwand gerichteten Rand mit einer Einführschräge zum Einführen der Stegwand in die Nut gestaltet, und/oder die Stegwand an mindestens einem ihrer zu den Nutwänden gerichteten Rändern mit einer Einführschräge zum Einführen der Stegwand in die Nut gestaltet.In order to further improve the mountability of the assembly according to the invention, the first, inner groove wall are further preferably designed at its edge directed to the web wall with an insertion bevel for insertion of the web wall in the groove, the second, outer groove wall at its edge directed to the web wall with an insertion bevel designed to insert the web wall into the groove, and / or the web wall is designed on at least one of its edges directed to the groove walls with an insertion bevel for insertion of the web wall into the groove.

Für die erfindungsgemäße Rastverbindung ist bevorzugt das erste Rastelement als eine Rastnase und das zweite Rastelement als eine Rastvertiefung gestaltet. Mit einer derartigen Rastgeometrie kann bei vergleichsweise geringer Rastbreite eine große Festigkeit der Rastverbindung erreicht werden.For the latching connection according to the invention, the first latching element is preferably designed as a latching nose and the second latching element as a latching recess. With such a latching geometry, a high strength of the latching connection can be achieved with a comparatively small latching width.

Das erste Rastelement und das zweite Rastelement sind ferner vorzugsweise sich im Wesentlichen über den gesamten Umfang des ersten und des zweiten Sprüharmteils erstreckend gestaltet. Mit der derart im Wesentlichen vollumfänglich umlaufenden Rastverbindung sind die beiden Sprüharmteile über ihren gesamten Umfang hinweg gleichmäßig fest aneinandergekoppelt. Die Gefahr eines örtlichen Lösens, Lockerns oder Aufbrechens der Verbindung ist daher bei gleichzeitig vergleichsweise geringer Zuhaltekraft minimiert. Dabei kann die umlaufende Verrastung vorteilhaft mit einer umlaufenden Dichtlippe an zumindest einem der Sprüharmteile kombiniert sein, die sich bei dem Verrasten mit dem Gegenstück über den gesamten Umfang hinweg anpresst und verformt. Eine solche Dichtlippe ist jedoch nicht zwingend. Es ist vielmehr so, dass gerade mit der erfindungsgemäß umlaufenden Verrastung zusätzlich ein Labyrinth gebildet ist, welches erheblich zur gegenseitigen Abdichtung der beiden Sprüharmteile beiträgt. So ist mit der Lösung gemäß der Erfindung eine optimale Ausgewogenheit zwischen Fügekraft und Verformung sowie Dichtheit erreicht. Die besondere Ausgestaltung der erfindungsgemäßen Rastgeometrie trägt zusätzlich dazu bei, dass die Dichtheit über den gesamten Umfang der beiden Sprüharmteile hinweg gewährleistet ist.The first latching element and the second latching element are further preferably designed to extend substantially over the entire circumference of the first and the second Sprüharmteils. With the latching connection, which is substantially completely circumferential in this way, the two spray arm parts are uniformly coupled to one another over their entire circumference. The risk of local loosening, loosening or breaking of the connection is therefore minimized at the same time relatively low clamping force. In this case, the circumferential latching can advantageously be combined with a circumferential sealing lip on at least one of the Sprüharmteile that presses against the counterpart and engages over the entire circumference in the latching when latching. However, such a sealing lip is not mandatory. Rather, it is the case that with the latching according to the invention, a labyrinth is additionally formed, which contributes significantly to the mutual sealing of the two spray arm parts. Thus, with the solution according to the invention, an optimal balance between joining force and deformation and tightness is achieved. The particular embodiment of the locking geometry according to the invention also contributes to the fact that the tightness is ensured over the entire circumference of the two Sprüharmteile away.

Darüber hinaus ist es vorteilhaft, wenn das erste Rastelement und das zweite Rastelement am Umfang des ersten und des zweiten Sprüharmteils in vorbestimmten Entfernungen über einen geringen Abstand unterbrochen gestaltet sind. Derartige Unterbrechungen der Rastelemente erstrecken sich vorzugsweise über einen Abstand von 0,5 cm bis 1,5 cm, besonders bevorzugt ca. 1,0 cm und sind insbesondere im Hinblick auf die Formgestaltung der für die Sprüharmteile verwendeten Spritzgussformen von Vorteil.Moreover, it is advantageous if the first locking element and the second locking element are designed to be interrupted at predetermined distances over a small distance at the periphery of the first and the second Sprüharmteils. Such interruptions of the locking elements preferably extend over a distance of 0.5 cm to 1.5 cm, more preferably about 1.0 cm and are particularly in view of the design of the injection molds used for Sprüharmteile advantage.

Schließlich ist die erfindungsgemäße Lösung auch hervorragend dazu geeignet, um von außen in die Nut mindestens einen Kanal zum Aufnehmen einer das erste Sprüharmteil mit dem zweiten Sprüharmteil verbindenden Masse vorzusehen. Die in den Kanal eingebrachte Masse kann eine zusätzliche Abdichtung und stoffschlüssige Verbindung der beiden Sprüharmteile gewährleisten, sofern dies gewünscht wird.Finally, the solution according to the invention is also outstandingly suitable for providing at least one channel for receiving a mass connecting the first spray arm part to the second spray arm part from the outside into the groove. The introduced into the channel mass can ensure additional sealing and cohesive connection of the two Sprüharmteile, if desired.

Kurzbeschreibung der ZeichnungenBrief description of the drawings

Nachfolgend werden Ausführungsbeispiele der erfindungsgemäßen Lösung anhand der beigefügten schematischen Zeichnungen näher erläutert. Es zeigt:

Fig. 1
eine erste perspektivische Ansicht eines ersten erfindungsgemäßen Sprüharms mit seinen beiden Sprüharmteilen vor der Montage,
Fig. 2
eine zweite perspektivische Ansicht der Sprüharmteile gemäß Fig. 1,
Fig. 3
eine perspektivische Ansicht der Sprüharmteile gemäß Fig. 1 nach deren Montage zum fertigen Sprüharm,
Fig. 4
den Schnitt IV - IV in Fig. 1,
Fig. 5
den Schnitt V - V in Fig. 3,
Fig. 6
das Detail VI in Fig. 5,
Fig. 7
die Ansicht gemäß Fig. 5 bei einer Variante eines erfindungsgemäßen Sprüharms,
Fig. 8
eine perspektivische Ansicht eines zweiten erfindungsgemäßen Sprüharms mit seinen beiden Sprüharmteilen vor der Montage,
Fig. 9
eine perspektivische Ansicht der Sprüharmteile gemäß Fig. 8 nach deren Montage zum fertigen Sprüharm und
Fig. 10
eine perspektivische Ansicht eines dritten erfindungsgemäßen Sprüharms mit seinen beiden Sprüharmteilen vor der Montage.
Exemplary embodiments of the solution according to the invention will be explained in more detail below with reference to the attached schematic drawings. It shows:
Fig. 1
a first perspective view of a first spray arm according to the invention with its two Sprüharmteilen before assembly,
Fig. 2
a second perspective view of the Sprüharmteile according to Fig. 1 .
Fig. 3
a perspective view of Sprüharmteile according to Fig. 1 after assembly to the finished spray arm,
Fig. 4
the section IV - IV in Fig. 1 .
Fig. 5
the section V - V in Fig. 3 .
Fig. 6
the detail VI in Fig. 5 .
Fig. 7
the view according to Fig. 5 in a variant of a spray arm according to the invention,
Fig. 8
a perspective view of a second spray arm according to the invention with its two Sprüharmteilen before assembly,
Fig. 9
a perspective view of Sprüharmteile according to Fig. 8 after their assembly to the finished spray arm and
Fig. 10
a perspective view of a third Sprüharms invention with its two Sprüharmteilen before assembly.

Detaillierte Beschreibung des AusführungsbeispielsDetailed description of the embodiment

In den Fig. ist ein Sprüharm 10 einer weiter nicht dargestellten Haushalt-Geschirrspülmaschine dargestellt, der einen vertikalen hohlzylindrischen Nabenabschnitt 12 aufweist, von dem zwei Armabschnitte 14 und 16 in entgegen gesetzten Richtungen horizontal abstehen. Im in die Geschirrspülmaschine eingebauten Zustand wird der Sprüharm 10 durch den Nabenabschnitt 12 hindurch mit Wasser unter Druck versorgt, welches dann aus Düsen 18 herausgesprüht wird, die am Sprüharm 10 verteilt angeordnet sind.In the figure, a spray arm 10 of a household dishwasher, not further shown, is shown having a vertical hollow cylindrical hub portion 12, projecting horizontally from the two arm portions 14 and 16 in opposite directions. When installed in the dishwasher state of the spray arm 10 is supplied through the hub portion 12 through with water under pressure, which is then sprayed from nozzles 18, which are arranged distributed on the spray arm 10.

Die Düsen 18 befinden sich verteilt an einer Oberseite 19 eines oberen, schalenförmigen Sprüharmteils 20 sowie gegebenenfalls auch an einer Unterseite 22 eines unteren, ebenfalls schalenförmigen Sprüharmteils 24. Die Sprüharmteile 20 und 24 sind dabei aus Kunststoff mittels Spritzgießen oder alternativ aus Metall, insbesondere Edelstahl, mittels Tiefziehen hergestellt und mit ihrer Schalenform jeweils so aneinander angelegt, dass ein Hohlraum 26 entsteht.The nozzles 18 are distributed on an upper side 19 of an upper, cup-shaped Sprüharmteils 20 and possibly also on an underside 22 of a lower, also cup-shaped Sprüharmteils 24. The Sprüharmteile 20 and 24 are made of plastic by injection molding or alternatively of metal, especially stainless steel, produced by deep drawing and each with their shell shape to each other so created that a cavity 26 is formed.

Der Naht- bzw. Verbindungsbereich zwischen den derart aneinander gelegten Schalen ist abgedichtet und formschlüssig gekoppelt gestaltet. Dazu ist an dem oberen Sprüharmteil 20 eine sich im Wesentlichen über dessen Umfang erstreckende Nut 28 ausgebildet, die von einer ersten, inneren Nutwand 30 und einer zweiten, äußeren Nutwand 32 gebildet ist. Ferner ist am unteren Sprüharmteil 24 eine sich im Wesentlichen ebenfalls über dessen gesamten Umfang erstreckende und in die Nut 28 eingreifende Stegwand 34 ausgebildet.The seam or connection region between the cups placed in such a manner is sealed and designed to be positively coupled. For this purpose, on the upper Sprüharmteil 20 a substantially extending over its circumference groove 28 is formed, which is formed by a first, inner groove wall 30 and a second, outer groove wall 32. Further, at the lower Sprüharmteil 24 a substantially also over its entire circumference extending and engaging in the groove 28 web wall 34 is formed.

Die Stegwand 34 ist an ihrer Spitze derart hoch gestaltet, dass sie bis an den Grund der Nut 28 und dort in einem ersten, oberen Dichtbereich 36 (siehe Fig. 6) durch eine kraftschlüssige Pressung gegen das obere Sprüharmteil 20 abgedichtet wird. Ferner ist die Nut 28 derart schmal gestaltet, dass die Stegwand 34 beim Einschieben in die Nut 28 seitlich gegen die innere Nutwand 30 gedrängt wird und dort in einem zweiten, seitlichen Dichtbereich 38 (siehe wiederum Fig. 6) ebenfalls gegen das obere Sprüharmteil 20 abdichtet. Alternativ ist die Stegwand 34 so hoch und/oder breit gestaltet, dass sie ohne größeren Anpressdruck zum Anliegen gegen die Wände der Nut 28 kommt. In diesem Fall ist eine Abdichtung zwischen dem oberen Sprüharmteil 20 und dem unteren Sprüharmteil 24 im Wesentlichen allein aufgrund der Labyrinth-Geometrie von Nut 28 und Stegwand 34 geschaffen.The web wall 34 is designed at its top so high that it up to the bottom of the groove 28 and there in a first, upper sealing region 36 (see Fig. 6 ) sealed by a frictional pressure against the upper Sprüharmteil 20 becomes. Furthermore, the groove 28 is designed so narrow that the web wall 34 is pushed laterally when inserted into the groove 28 against the inner groove wall 30 and there in a second, lateral sealing region 38 (see again Fig. 6 ) also seals against the upper Sprüharmteil 20. Alternatively, the web wall 34 is designed so high and / or wide that it comes to rest against the walls of the groove 28 without greater contact pressure. In this case, a seal between the upper Sprüharmteil 20 and the lower Sprüharmteil 24 is created substantially solely due to the labyrinth geometry of groove 28 and web wall 34.

Zwischen dem oberen Sprüharmteil 20 und dem unteren Sprüharmteil 24 ist weiter eine Rastverbindung 40 geschaffen, mittels der die beiden Teile formschlüssig aneinander gekoppelt sind. Die formschlüssige Kopplung wird ohne gesonderten Arbeitsschritt beim Zusammenfügen von Sprüharmteil 20 und Sprüharmteil 24 während der Montage des Sprüharms 10 hergestellt. Die Stegwand 34 am unteren Sprüharmteil 24 weist dazu außenseitig ein erstes Rastelement 41 auf, das mit einem zweiten Rastelement 42 innenseitig an der äußere Nutwand 32 zusammenwirkt. Die derartige Rastverbindung 40 ist für den Betrachter des Sprüharms 10 von außen nicht sichtbar.Between the upper Sprüharmteil 20 and the lower Sprüharmteil 24 a locking connection 40 is further provided by means of which the two parts are positively coupled to each other. The positive coupling is produced without a separate step in the assembly of Sprüharmteil 20 and Sprüharmteil 24 during assembly of the spray arm 10. The web wall 34 on the lower Sprüharmteil 24 has for this purpose on the outside a first latching element 41, which cooperates with a second latching element 42 on the inside of the outer groove wall 32. Such locking connection 40 is not visible to the viewer of the spray arm 10 from the outside.

Das erste Rastelement 41 ist als eine Rastnase und das zweite Rastelement 42 als eine Rastvertiefung gestaltet, die sich im Wesentlichen über den gesamten Umfang des ersten und des zweiten Sprüharmteils 20 bzw. 24 erstrecken und nur am Umfang in vorbestimmten Entfernungen über einen geringen Abstand 44 unterbrochen sind.The first latching element 41 is designed as a latching lug and the second latching element 42 as a latching recess extending substantially over the entire circumference of the first and the second Sprüharmteils 20 and 24 and interrupted only at the periphery at predetermined distances over a small distance 44 are.

Die zweite, äußere Nutwand 32 ist höher als die erste, innere Nutwand 30 gestaltet und ragt weit über die Stegwand 34 hinweg, wenn das untere Sprüharmteil 24 an das obere Sprüharmteil 20 herangeführt wird. Ferner ist die erste, innere Nutwand 30 an ihrem zur Stegwand 34 gerichteten Rand mit einer Einführschräge 46 zum Einführen der Stegwand 34 in die Nut 28 gestaltet, die zweite, äußere Nutwand 32 ist an ihrem zur Stegwand 34 gerichteten Rand mit einer Einführschräge 48 ebenfalls zum Einführen der Stegwand 34 in die Nut 28 gestaltet, und die Stegwand 34 selbst ist an ihren beiden zu den Nutwänden 30 und 32 gerichteten Rändern mit je einer Einführschräge 50 und 52 gestaltet. Mit diesen Einführschrägen 46, 48, 50 und 52 ist insgesamt das Einführen der Stegwand 34 in die Nut 28 auch bei größeren Maßunterschieden zwischen Sprüharmteil 20 und Sprüharmteil 24 möglich.The second, outer groove wall 32 is designed to be higher than the first, inner groove wall 30 and protrudes far beyond the web wall 34 when the lower Sprüharmteil 24 is brought to the upper Sprüharmteil 20. Furthermore, the first, inner groove wall 30 is designed on its edge directed to the web wall 34 with an insertion bevel 46 for insertion of the web wall 34 in the groove 28, the second, outer groove wall 32 is directed to its web wall 34 edge with an insertion bevel 48 also designed for insertion of the web wall 34 in the groove 28, and the web wall 34 itself is designed at its two facing the groove walls 30 and 32 edges, each with an insertion bevel 50 and 52. With these chamfers 46, 48, 50 and 52 a total of the insertion of the web wall 34 in the groove 28 is possible even with larger dimensional differences between Sprüharmteil 20 and Sprüharmteil 24.

Die Fig. 7 zeigt schließlich eine Variante eines Sprüharms 10, bei dem am oberen Sprüharmteil 20 an dessen oberem Randbereich über dessen Umgang verteilt mehrere Kanäle 54 zum Aufnehmen einer das erste Sprüharmteil 20 mit dem zweiten Sprüharmteil 24 verbindenden Masse vorgesehen sind. Die Masse kann während der Montage zur zusätzlichen Abdichtung und stoffschlüssigen Verbindung der beiden Sprüharmteile 20 und 24 in die Kanäle 54 eingebracht werden, um sich insbesondere innerhalb der Nut 28 oberhalb der Stegwand 34 zu verteilen.The Fig. 7 Finally shows a variant of a Sprüharms 10, in which at the upper Sprüharmteil 20 at its upper edge region distributed over the handling of several channels 54 are provided for receiving a the first Sprüharmteil 20 with the second Sprüharmteil 24 mass. The mass can be introduced during assembly for additional sealing and cohesive connection of the two Sprüharmteile 20 and 24 in the channels 54 in order to distribute in particular within the groove 28 above the web wall 34.

In den Fig. 8 und 9 ist ein Sprüharm 10 veranschaulicht, dessen Sprüharmteil 20 ebenfalls mit einer Nut 28, einer inneren Nutwand 30 und einer äußeren Nutwand 32 gestaltet ist. In der äußeren Nutwand 32 ist jeweils etwa in der Mitte der Armabschnitt 14 bzw. 16 ein im Wesentlichen vertikaler Schlitz 56 ausgebildet. Der Schlitz 56 erstreckt sich im Wesentlichen über die gesamte Höhe der Nutwand 32 und ist nach außen offen bzw. von außen zugänglich. In den derartigen Schlitz 56 wird beim Zusammenfügen der beiden Sprüharmteile 20 und 24 eine Rippe 58 formschlüssig eingeschoben, die an entsprechender Stelle außen an der Stegwand 34 des unteren Sprüharmteils 24 ausgebildet ist. Die derartigen, insgesamt vier am Umgang des Sprüharmteils 24 verteilt angeordneten Rippen 58 dienen in Zusammenwirkung mit den zugehörigen vier Schlitzen 56 am oberen Sprüharmteil 20 als versteifendes Element und verhindern insbesondere ein Verwinden des Sprüharms 10, wenn dieser im Betrieb von Wasser durchströmt und dabei in Rotation versetzt wird.In the 8 and 9 a spray arm 10 is illustrated, the Sprüharmteil 20 is also designed with a groove 28, an inner groove wall 30 and an outer groove wall 32. In the outer groove wall 32, a substantially vertical slot 56 is formed in each case approximately in the middle of the arm section 14 or 16. The slot 56 extends substantially over the entire height of the groove wall 32 and is open to the outside or accessible from the outside. In the slot 56 of this type, when joining the two spray arm parts 20 and 24, a rib 58 is inserted in a form-fitting manner, which is formed on the web wall 34 of the lower spray arm part 24 at the corresponding location on the outside. The thus, a total of four arranged on the handling of the Sprüharmteils 24 arranged ribs 58 serve in cooperation with the associated four slots 56 on the upper Sprüharmteil 20 as a stiffening element and in particular prevent twisting of the spray arm 10 when it flows through the operation of water and thereby in rotation is offset.

In Fig. 10 ist ein Sprüharm 10 veranschaulicht, bei dem in funktional gleicher Weise vertikale Schlitze 56 an der inneren Nutwand 30 und Rippen 58 an der Innenseite der Stegwand 34 ausgebildet sind. Die derartige Anordnung von Schlitzen 56 und formschlüssigen Rippen 58 führt zu einer versteifenden Wirkung, die von außen nicht sichtbar ist.In Fig. 10 a spray arm 10 is illustrated in which functionally identical vertical slots 56 are formed on the inner groove wall 30 and ribs 58 on the inside of the web wall 34. Such an arrangement of slots 56 and positive ribs 58 results in a stiffening effect that is not visible from the outside.

Abschließend sei angemerkt, dass sämtlichen Merkmalen, die in den Anmeldungsunterlagen und insbesondere in den abhängigen Ansprüchen genannt sind, trotz dem vorgenommenen formalen Rückbezug auf einen oder mehrere bestimmte Ansprüche, auch einzeln oder in beliebiger Kombination eigenständiger Schutz zukommen soll.Finally, it should be noted that all the features that are mentioned in the application documents and in particular in the dependent claims, in spite of the formal reference back to one or more specific claims, even individually or in any combination should receive independent protection.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Sprüharmspray arm
1212
Nabenabschnitthub portion
1414
Armabschnittarm
1616
Armabschnittarm
1818
Düsejet
1919
Oberseitetop
2020
oberes SprüharmteilUpper spray arm part
2222
Unterseitebottom
2424
unteres Sprüharmteillower spray arm part
2626
Hohlraumcavity
2828
Nutgroove
3030
innere Nutwandinner groove wall
3232
äußere Nutwandouter groove wall
3434
Stegwandweb wall
3636
oberer Dichtbereichupper sealing area
3838
seitlicher Dichtbereichlateral sealing area
4040
Rastverbindunglocking connection
4141
erstes Rastelement am unteren Sprüharmfirst locking element on the lower spray arm
4242
zweites Rastelement am oberen Sprüharmsecond locking element on the upper spray arm
4444
Abstanddistance
4646
Einführschräge an der inneren NutwandInsertion bevel on the inner groove wall
4848
Einführschräge an der äußeren NutwandInsertion bevel on the outer groove wall
5050
Einführschräge an der StegwandInsertion bevel on the web wall
5252
Einführschräge an der StegwandInsertion bevel on the web wall
5454
Kanal zum Einführen einer MasseChannel for introducing a mass
5656
vertikaler Schlitzvertical slot
5858
Ripperib

Claims (9)

  1. Spray arm (10) for a dishwasher, comprising a first spray arm part (20) and a second spray arm part (24), of which the second spray arm part (24) comprises a web wall (34) which extends substantially along the circumference of the second spray arm part (24), wherein the web wall (34) comprises a first latching element (41),
    wherein the first spray arm (20) comprises a groove (28) which extends substantially along the circumference of the first spray arm part (20), which groove is formed by a first, inner groove wall (30) and a second, outer groove wall (32), and the web wall (34) is designed to engage with the groove (28), wherein the first latching element (41), to establish a latching connection (40) between the first and the second spray arm part (20; 24), is designed to interact with a second latching element (42) which is located on the outer groove wall (32),
    characterised in that the second, outer groove wall (32) is designed to be higher than the first, inner groove wall (30), that the second, outer groove wall (32) extends so far beyond the web wall (34) that when the second spray arm part (24) is brought together with the first spray arm part (20), there is sufficient space for the location of the latching connection (40) below.
  2. Spray arm of claim 1,
    wherein the first latching element (41) is embodied on the outside of the web wall (34) and the second latching element (42) is embodied on the second, outer groove wall (32).
  3. Spray arm according to claim 1 or 2,
    wherein the first, inner groove wall (30) is designed with an insertion chamfer (46) on its rim facing the web wall (34) for insertion of the web wall (34) into the groove (28).
  4. Spray arm according to one of claims 1 to 3,
    wherein the second, outer groove wall (32) is designed with an insertion chamfer (48) on its rim facing the web wall (34) for insertion of the web wall (34) into the groove (28).
  5. Spray arm according to one of claims 1 to 4,
    wherein the web wall (34) is designed with an insertion chamfer (50, 52) on at least one of its rims facing the groove walls (30; 32) for insertion of the web wall (34) into the groove (28).
  6. Spray arm according to one of claims 1 to 5,
    wherein the first latching element (41) is designed as a detent lug and the second latching element (42) as a detent recess.
  7. Spray arm according to one of claims 1 to 6,
    wherein the first latching element (41) and the second latching element (42) are designed to extend substantially along the entire circumference of the first and the second spray arm part (20; 24).
  8. Spray arm according to claim 7,
    wherein the first latching element (41) and the second latching element (42) are designed with an interruption by a short gap (44) at predetermined spacings along the circumference of the first and the second spray arm part (20; 24) .
  9. Spray arm according to one of claims 1 to 8,
    wherein at least one channel (54) leads from the outside into the groove (28) for accommodating a mass connecting the first spray arm part (20) with the second spray arm part (24).
EP12829206.7A 2012-03-30 2012-12-19 Spray arm for a dishwasher having two spray-arm parts Active EP2830475B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12829206T PL2830475T3 (en) 2012-03-30 2012-12-19 Spray arm for a dishwasher having two spray-arm parts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012006379A DE102012006379A1 (en) 2012-03-30 2012-03-30 Spray arm for a dishwasher with two spray arm parts
PCT/DE2012/001213 WO2013143516A1 (en) 2012-03-30 2012-12-19 Spray arm for a dishwasher having two spray-arm parts

Publications (2)

Publication Number Publication Date
EP2830475A1 EP2830475A1 (en) 2015-02-04
EP2830475B1 true EP2830475B1 (en) 2018-07-04

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US (1) US20130255734A1 (en)
EP (1) EP2830475B1 (en)
CN (1) CN104302222B (en)
DE (1) DE102012006379A1 (en)
ES (1) ES2688870T3 (en)
PL (1) PL2830475T3 (en)
WO (1) WO2013143516A1 (en)

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DE102012006379A1 (en) 2013-10-02
WO2013143516A1 (en) 2013-10-03
CN104302222B (en) 2017-07-28
US20130255734A1 (en) 2013-10-03
PL2830475T3 (en) 2019-03-29
ES2688870T3 (en) 2018-11-07
EP2830475A1 (en) 2015-02-04
CN104302222A (en) 2015-01-21

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