EP1967636B1 - Haushaltswaschmaschine mit integriertem Trommelstutzen - Google Patents

Haushaltswaschmaschine mit integriertem Trommelstutzen Download PDF

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Publication number
EP1967636B1
EP1967636B1 EP07103650A EP07103650A EP1967636B1 EP 1967636 B1 EP1967636 B1 EP 1967636B1 EP 07103650 A EP07103650 A EP 07103650A EP 07103650 A EP07103650 A EP 07103650A EP 1967636 B1 EP1967636 B1 EP 1967636B1
Authority
EP
European Patent Office
Prior art keywords
shaft
hollow shaft
pulley
washing machine
clothes washing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP07103650A
Other languages
English (en)
French (fr)
Other versions
EP1967636A1 (de
Inventor
Fabio Zanello
Mihail Georgescu
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to DE602007006153T priority Critical patent/DE602007006153D1/de
Priority to AT07103650T priority patent/ATE466126T1/de
Priority to PL07103650T priority patent/PL1967636T3/pl
Priority to EP07103650A priority patent/EP1967636B1/de
Priority to ES07103650T priority patent/ES2343975T3/es
Priority to PCT/EP2008/001615 priority patent/WO2008107124A1/en
Publication of EP1967636A1 publication Critical patent/EP1967636A1/de
Application granted granted Critical
Publication of EP1967636B1 publication Critical patent/EP1967636B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • 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
    • 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
    • D06F37/30—Driving arrangements 

Definitions

  • the present invention refers to an improved kind of household clothes washing machine, both of the front-loading and the top-loading kind, however of the so-called horizontal-axis or inclined-axis type, which is provided with a rotating drum and a related spider member that is particularly advantageous as far as manufacturing simplicity and related costs are concerned.
  • Such drum 1 is accommodated in a generally water-tightly sealed tub 4 that is provided in a vertical face thereof with an aperture 5, through which said rotating shaft 3 is able to extend from the outside towards said spider member 2 of the rotating drum accommodated thereinside.
  • the same aperture 5 is lined with an appropriate cylindrical bush member 6, or "lining tube” as it is generally referred to in the art, which in other words is a cylindrical, internally hollow member that is applied to the cylindrical inner surface of said aperture so as to line it.
  • a couple of bearings 7 are applied inside said bushing properly spaced from each other and sized so as to be able to support said rotating shaft 3.
  • attaching the rotating drum on to the head of the driving shaft thereof is done by means of a die-casting process, involving the use of a metal alloy that prevailingly contains aluminium, wherein both the spider member 2 of the drum 1 and the attachment thereof on to the head of the driving shaft are produced and provided in a single die-casting operation, in which said head of the shaft is appropriately inserted in the same die-casting cavity to such purpose.
  • the same head of the shaft is subject to further machining in view of providing an outward-open annular groove thereon, wherein such groove is intended for being filled by the same die-cast alloy so that, by solidly engaging the head of the shaft, the alloy filling said groove is effective in ensuring said two parts to become definitively and firmly secured to each other.
  • a household-type clothes washing machine comprises a rotating shaft 1, into which the clothes to be washed are placed, and which is supported by a spider 2 adapted to support said rotating drum as firmly joined thereto, wherein said spider is rotatably driven by a driving or rotating shaft 3 that is firmly joined thereto and adapted to drive it to rotate jointly therewith; the clothes washing machine further comprises a washing tub 4 that in a conventional manner contains both the drum and the spider associated thereto, as well as part of said shaft 3 that extends into said tub by passing through an aperture 5 provided in a vertical wall of said tub.
  • said driving shaft is provided in the form of an internally hollows tube 10, in which the inner cavity 20 is preferably cylindrical, so that the terminal head portion 11 thereof features a double engagement surface, i.e. an inner engagement surface 12 and an outer one 13, both of them cylindrical.
  • the drum is submitted to a usual die-casting process to inglobate, i.e. incorporate in the middle portion thereof not only said outer surface 13 of the terminal head portion 11 of the shaft, but also enable the die-casting alloy - by flowing into said inner cavity 20 - to cover the inner cylindrical surface 12 thereof, thereby inglobating, i.e. incorporating even this surface.
  • the above-described inventive solution is also effective in enabling a particularly favourable embodiment of the coupling to be achieved.
  • said terminal, internally hollow terminal head portion 11 is in turn provided with two preferably cylindrical through-channels 21 and 22 extending thereacross, which join the inner surface 12 with the outer surface 13 of the same head portion.
  • this solution practically enables the alloy flowing into said inner cavity 20 to also flow into and enter said two through-channels 21 and 22, so as to ultimately allowing the two flows of die-cast alloy from the outside and the inside of the hollow shaft to flow into each other, thereby joining together.
  • the above-described solution enables the alloy to close in on said terminal head portion 11 - during the die-casting process - by also forming a couple of closed-loop configurations, or rings, of alloy extending from the inner cavity of the head portion to the outer surface thereof, as represented by the closed-loop flow-paths indicated at H and K, respectively, in Figure 2 .
  • the "closed-loop", i.e. ring-like configuration taken by the die-cast alloy on the head portion of the shaft, as well as thereinside, is such as to enable the portion of die-cast alloy located inside said through-channels 21 and 22 to naturally adhere to and engage the respective walls; this circumstance - as anyone skilled in the art may be able to most readily appreciate - improves the coupling strength to a quite significant extent both under conditions of axial-type stresses and in particular - what is far more important - under conditions of continuous rotational stresses as they occur during the use of the machine.
  • the ringshaped surface portion 30 of said inner terminal head 11 facing the interior of the drum is provided with two or more furrow-like recesses 31 and 32 that are open axially, i.e. towards the outer zone thereof exposed to the die-cast alloy.
  • these furrows 31 and 32 will of course be filled with alloy that, by setting thereinside, is effective in further increasing - and again to a quite significant extent - the strength, i.e. the capability of withstanding the continuous rotational stresses imparted thereto.
  • a shaft formed in the shape of an internally hollow tube 10, and therefore provided with an inner longitudinal through-cavity 20, allows further for a number of advantageous variants concerning mainly the way in which the pulley used to transmit motion to the driving shaft of the drum is coupled to the same shaft.
  • the middle zone of the pulley 40 is provided with an aperture 41 that is arranged so as to lie coaxially with the axis X of said inner cavity 20, and is provided - on the face thereof facing the drum - with an internally hollow crown-like relief 42 surrounding said aperture 41.
  • a different embodiment is based on providing the middle portion of said pulley 40 with a cylindrical protrusion 81 oriented towards the hollow shaft 10 and adapted to engage the inner surface of said through-cavity 20 by the mutual meshing of corresponding threads 82.
  • a plurality of furrow-like recesses 85 in the outer abutment portion 84 of the hollow shaft 10 there are provided a plurality of furrow-like recesses 85, while a corresponding plurality of appendices, i.e. projections 86 are provided on the inner surface of said pulley 40 in a position so as to lie externally relative to said cylindrical protrusion 81.
  • Said projections are positioned and distributed so as to be able to fit in or correspond to respective ones of said recesses 85.
  • said projections have a base of a limited height and thickness.
  • said cylindrical protrusion 81 is screwed into said hollow shaft 10, as this is shown in Figure 8C ; as the pulley keeps being screwed in, said projections 86 first come into contact with and move along by rubbing against said outer abutment portion, and then get distorted so as to fit into respective ones of said recesses 85, as this is shown in Figure 8E .
  • the pulley is firmly and securely joined to the shaft in an effective manner, since said projections, and the pulley as well, are made of a rather “soft” material, whereas said recesses 85 are of course made of steel.
  • a different embodiment is based on providing the middle portion of said pulley 40 with a cylindrical protrusion 51 oriented towards the hollow shaft 10 and adapted to engage the inner surface of said through-cavity 20 by the mutual meshing of corresponding threads 52.
  • an appropriate bore 53 extending parallel to said axis X, but radially displaced relative thereto.
  • a corresponding bore 55 In the outer abutment portion 54 of the hollow shaft 10 there is provided a corresponding bore 55, while a corresponding peg 56 adapted to engage both said bores 53 and 55 is provided separately.
  • the pulley 40 shall first be screwed in to mesh with the threads 52; said peg 56 shall then be inserted in said bores 53 and 55, which must of course be correctly aligned with each other to such purpose, whereupon the same peg 56 is finally locked with the help of locking means as they are largely known as such in the art.
  • an improved embodiment as compared with the above-described one is based on providing said peg so as it does not extend parallel to the axis X, but is rather inserted under a definite inclination "i" relative.
  • a corresponding bore 64 which is capable of being aligned with the above-cited bore 63, while a corresponding peg 66 adapted to engage both said bores 63 and 64 is provided separately.
  • the result obtained with this embodiment turns out as being more advantageous, since the inclined peg is capable of ensuring its locking action in a twofold direction, i.e. not only in view of preventing any possible rotation of the pulley relative to the ho0llow shaft 10, but also in view of preventing the same pulley from possibly slipping off the shaft axially.
  • the corresponding end portion 72 of the hollow shaft 10 is configured so as to extend axially, as well, and the coupling parts are so sized as to enable said end portion 72 of the hollow shaft 10 to smoothly fit into and precisely couple with said inner annular surface 71 of the central bore 70 in the pulley 40.
  • the pulley can be effectively locked onto said hollow shaft 10 against both rotational and axial displacements relative thereto by simply clinching, i.e. riveting down the innerly hollow end portion 72, thereby widening it out so as to create an outwardly projecting lip 73 that moves into abutting against said annular surface 71 and presses in a radial direction thereupon.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Claims (8)

  1. Haushalts-Wäschewaschmaschine, die Folgendes umfasst:
    - eine Rotationstrommel (1) zur Aufnahme des Waschguts,
    - ein Sternelement (2), welches dazu dient, die Trommel integriert zu lagern,
    - eine Rotations- oder Antriebswelle, die mit dem Sternelement integriert verbunden ist und geeignet ist, auf dieses eine Rotationsbewegung zu übertragen,
    - einen Laugenbehälter (4), der dazu ausgeführt ist, die Rotationstrommel und das mit dieser integriert verbundene Sternelement (2) aufzunehmen und mit einer Öffnung (5) versehen ist, durch die die Antriebswelle hindurchgeführt werden kann,
    dadurch gekennzeichnet, dass die Rotations- oder Antriebswelle mit einem Endkopf (11) ausgerüstet ist, der in Form eines Hohlrohrs (10) ausgeführt ist, dessen innerer, vorzugsweise zylindrischer Hohlraum (20) eine Innenfläche (12) aufweist, wobei das Sternelement (2) der Rotationstrommel aus einer Druckgusslegierung gefertigt ist, die so ausgeführt ist, dass sie sowohl die Innenfläche (12) wie auch die Außenfläche (13) des Endkopfes (11) umschließt.
  2. Haushalts-Wäschewaschmaschine gemäß Anspruch 1, dadurch gekennzeichnet, dass der Endkopf (11) der Hohlwelle (10) mit mindestens einem durchgehenden Kanal (21, 22) versehen ist, der eine Verbindung zwischen der Außenfläche desselben und dem inneren Hohlraum (20) herstellt, wobei der umschließende Teil der Druckgusslegierung eine geschlossene Schleife (H, K) bildet, welche den Innenhohlraum (20) mit der entsprechenden Außenfläche desselben verbindet, indem sie durch mindestens einen der durchgehenden Kanäle (21, 22) geht.
  3. Haushalts-Wäschewaschmaschine gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Abschnitt (30) des Endkopfes (11) der Hohlwelle (10), der der Innenseite der Trommel zugewandt ist, mit mindestens einer axial offenen, rinnenartigen Vertiefung (31, 32) versehen ist, die mit der Druckgusslegierung gefüllt ist, welche den inneren Endkopf (11) der Welle umschließt.
  4. Haushalts-Wäschewaschmaschine gemäß einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Mittelbereich einer Riemenscheibe (40) mit einer Öffnung (41) versehen ist, die so angeordnet ist, dass sie koaxial zur Achse (X) der Hohlwelle (10) liegt, und ferner mit einem innen hohlen, kronenartigen Profil (42) versehen ist, das die Öffnung (41) umgibt und innen so geformt ist, dass es einen nichtzylindrischen Umriss zeigt, und dadurch gekennzeichnet, dass der äußere Endabschnitt (43) der Hohlwelle (10) seinerseits so geformt ist, dass er einen nichtzylindrischen Umriss zeigt, der geeignet ist, in das kronenartige Profil (42) zu passen und sich mit diesem zu koppeln, und dass - vorzugsweise in Form eines Schraubbolzens (44) - Verriegelungsmittel vorgesehen sind, die geeignet sind, von der Außenseite eingeschraubt zu werden, um durch die Öffnung (41) hindurchzugehen und schließlich in das entsprechende Gewinde (45) einzugreifen, das an der Innenfläche des durchgehenden Hohlraums (20) vorgesehen ist.
  5. Haushalts-Wäschewaschmaschine gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Riemenscheibe (40) mit einem zylindrischen Vorsprung (81) versehen ist, der gegen die Hohlwelle (10) gerichtet ist, und dass im äußeren Anstoßabschnitt (84) der Hohlwelle (10) eine Mehrzahl hohlkehliger Vertiefungen (85) vorgesehen sind, wobei eine entsprechende Mehrzahl von Vorsprüngen (86) auf der Oberfläche der Riemenscheibe (40) in Ausrichtung gegen die Hohlwelle vorgesehen und so angeordnet sind, dass sie im Verhältnis zum zylindrischen Vorsprung (81) außen liegen, wobei die Vorsprünge geeignet sind, in die Vertiefungen (85) zu passen und sich verformbar mit diesen zu koppeln.
  6. Haushalts-Wäschewaschmaschine gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Mittelabschnitt der Riemenscheibe (40) mit einem zylindrischen Vorsprung (51) versehen ist, der gegen die Hohlwelle (10) gerichtet und geeignet ist, durch gegenseitiges Eingreifen der entsprechenden Gewinde (52) eine Verbindung mit der Innenfläche des durchgehenden Hohlraums (20) aufzunehmen, und dadurch gekennzeichnet, dass in der Außenfläche der Riemenscheibe (40) eine entsprechende Bohrung (53) vorgesehen ist, die sich parallel zu der Achse (X) erstreckt, aber im Verhältnis zu dieser radial versetzt ist, und dass im äußeren Anstoßabschnitt (54) der Hohlwelle (10) eine entsprechende Bohrung (55) vorgesehen ist, wobei ein entsprechender Stift (56) geeignet ist, beide Bohrungen (53, 55) gleichzeitig zu verbinden.
  7. Haushalts-Wäschewaschmaschine gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Mittelabschnitt der Riemenscheibe (40) mit einem zylindrischen Vorsprung (51) versehen ist, der gegen die Hohlwelle (10) gerichtet und geeignet ist, durch gegenseitiges Eingreifen der entsprechenden Gewinde (52) eine Verbindung mit der Innenfläche des durchgehenden Hohlraums (20) aufzunehmen, und dadurch gekennzeichnet, dass in der Außenfläche der Riemenscheibe (40) eine entsprechende Bohrung (63) vorgesehen ist, die sich in einem positiven Winkel (i) im Verhältnis zu der Achse (X) geneigt erstreckt, und dass im äußeren Anstoßabschnitt (54) der Hohlwelle (10) eine entsprechende Bohrung (64) vorgesehen ist, wobei ein entsprechender Stift (56) geeignet ist, beide Bohrungen (63, 64) gleichzeitig zu verbinden.
  8. Haushalts-Wäschewaschmaschine gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Riemenscheibe (40) mit einer Mittelbohrung (70) versehen ist, deren innere ringförmige Oberfläche (71) geeignet ist, genau in den entsprechenden äußeren Endabschnitt (72) der Hohlwelle (10) zu passen und durch eine Achsbewegung eine präzise Verbindung zu diesem aufzunehmen, und dass nach Herstellung einer solchen Kopplung der äußere zylindrische Endabschnitt (72) einfach abwärts gestaucht oder genietet wird, um eine auswärts vorspringende Lippe (73) zu schaffen, die sich in eine Kontaktstellung zur ringförmigen Oberfläche (71) bewegt.
EP07103650A 2007-03-07 2007-03-07 Haushaltswaschmaschine mit integriertem Trommelstutzen Not-in-force EP1967636B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE602007006153T DE602007006153D1 (de) 2007-03-07 2007-03-07 Haushaltswaschmaschine mit integriertem Trommelstutzen
AT07103650T ATE466126T1 (de) 2007-03-07 2007-03-07 Haushaltswaschmaschine mit integriertem trommelstutzen
PL07103650T PL1967636T3 (pl) 2007-03-07 2007-03-07 Domowa pralka do ubrań ze scalonym bębnem pająkowym
EP07103650A EP1967636B1 (de) 2007-03-07 2007-03-07 Haushaltswaschmaschine mit integriertem Trommelstutzen
ES07103650T ES2343975T3 (es) 2007-03-07 2007-03-07 Lavadora domestica dotada de una cruceta de tambor integrada.
PCT/EP2008/001615 WO2008107124A1 (en) 2007-03-07 2008-02-29 Household clothes washing machine with integrated drum spider

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07103650A EP1967636B1 (de) 2007-03-07 2007-03-07 Haushaltswaschmaschine mit integriertem Trommelstutzen

Publications (2)

Publication Number Publication Date
EP1967636A1 EP1967636A1 (de) 2008-09-10
EP1967636B1 true EP1967636B1 (de) 2010-04-28

Family

ID=38372487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07103650A Not-in-force EP1967636B1 (de) 2007-03-07 2007-03-07 Haushaltswaschmaschine mit integriertem Trommelstutzen

Country Status (6)

Country Link
EP (1) EP1967636B1 (de)
AT (1) ATE466126T1 (de)
DE (1) DE602007006153D1 (de)
ES (1) ES2343975T3 (de)
PL (1) PL1967636T3 (de)
WO (1) WO2008107124A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9255354B2 (en) 2011-10-24 2016-02-09 Lg Electronics Inc. Washing machine to produce three-dimensional motion
US9512551B2 (en) 2011-10-24 2016-12-06 Lg Electronics Inc. Washing machine to produce three-dimensional motion

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2412863B1 (de) * 2010-07-30 2013-11-06 Candy S.p.A. Behälter-Trommelgruppe für Waschmaschinen, Wäschetrockner oder Trockner
KR101951423B1 (ko) 2012-10-09 2019-04-25 엘지전자 주식회사 듀얼드럼 세탁기의 서브드럼 구조 및 이를 이용한 서브드럼 결합방법
DE102014214949B4 (de) * 2014-07-30 2022-11-24 BSH Hausgeräte GmbH Haushalt-Wäschebehandlungsmaschine mit einer durch einen Elektromotor antreibbaren Wäschetrommel und Verfahren zum Montieren

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533722A (en) * 1943-07-14 1950-12-12 J G De Remer Res Corp Balancing centrifugal drying and washing machine
GB877430A (en) * 1957-10-17 1961-09-13 Hoover Ltd Improvements relating to washing machines
GB972278A (en) * 1960-05-12 1964-10-14 Hoover Ltd Improvements relating to washing and spin-drying machines
NL6509287A (de) * 1965-07-17 1967-01-18
US4468938A (en) * 1983-09-12 1984-09-04 General Electric Company Tubless washing machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9290881B2 (en) 2011-10-20 2016-03-22 Lg Electronics Inc. Washing machine to produce three-dimensional motion
US9255354B2 (en) 2011-10-24 2016-02-09 Lg Electronics Inc. Washing machine to produce three-dimensional motion
US9279209B2 (en) 2011-10-24 2016-03-08 Lg Electronics Inc. Washing machine to produce three-dimensional motion
US9328447B2 (en) 2011-10-24 2016-05-03 Lg Electronics Inc. Washing machine to produce three-dimensional motion
US9512551B2 (en) 2011-10-24 2016-12-06 Lg Electronics Inc. Washing machine to produce three-dimensional motion
US9528213B2 (en) 2011-10-24 2016-12-27 Lg Electronics Inc. Washing machine to produce three-dimensional motion
US9556551B2 (en) 2011-10-24 2017-01-31 Lg Electronics Inc. Washing machine to produce three-dimensional motion

Also Published As

Publication number Publication date
DE602007006153D1 (de) 2010-06-10
ES2343975T3 (es) 2010-08-13
EP1967636A1 (de) 2008-09-10
PL1967636T3 (pl) 2010-09-30
ATE466126T1 (de) 2010-05-15
WO2008107124A1 (en) 2008-09-12

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