WO2004009264A1 - Verfahren zur befestigung der trommel einer waschmaschine und befestigung dafür - Google Patents
Verfahren zur befestigung der trommel einer waschmaschine und befestigung dafür Download PDFInfo
- Publication number
- WO2004009264A1 WO2004009264A1 PCT/EP2003/007437 EP0307437W WO2004009264A1 WO 2004009264 A1 WO2004009264 A1 WO 2004009264A1 EP 0307437 W EP0307437 W EP 0307437W WO 2004009264 A1 WO2004009264 A1 WO 2004009264A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drum
- nozzle
- opening
- star
- walls
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 24
- 238000005406 washing Methods 0.000 title claims description 10
- 239000002184 metal Substances 0.000 claims description 7
- 230000000295 complement effect Effects 0.000 claims description 2
- 238000007373 indentation Methods 0.000 claims description 2
- 101100110009 Caenorhabditis elegans asd-2 gene Proteins 0.000 description 7
- 230000002787 reinforcement Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
- B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
- B21D39/032—Joining superposed plates by locally deforming without slitting or piercing by fitting a projecting part integral with one plate in a hole of the other plate
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49909—Securing cup or tube between axially extending concentric annuli
- Y10T29/49911—Securing cup or tube between axially extending concentric annuli by expanding inner annulus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/49—Member deformed in situ
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/49—Member deformed in situ
- Y10T403/4949—Deforming component is inserted section
Definitions
- the invention relates to a method for fastening the rear wall of a drum of a washing machine to a supporting star, on which the drum is rotatably mounted about an axis, and to a fastening which is achieved using the method. Its task is to provide the attachment with features that can withstand greater loads when turning the drum, especially in washing machines that spin at high speeds.
- drums of washing machines with the possibility of rotation are arranged inside a container, for which purpose they are fastened to a holder (called a star) which is fixedly connected to an axis of rotation which is driven by a suitable motor.
- the support star is star-shaped and its support arms are attached to the drum.
- a known embodiment for fastening the holding arms to the drum provides for the ends of the holding arms to be screwed to a circumferential projection which is formed on the rear wall of the drum.
- brackets have disadvantages.
- the stresses encountered when rotating the drum at high speeds are absorbed by the points at which the end of the support arms connects to the peripheral projection of the drum. This can cause cracks in the drum, especially at high spin speeds, or the mounting points cannot withstand the loads at high speeds themselves.
- the necessary metal reinforcement plates are the cause of the high costs of the type of fastening.
- the object of the invention is to develop a new fastening method for the drum of a washing machine, in which the support star for the axis of rotation and its fastening is cheaper but nevertheless more stable.
- the method according to the invention achieves this object in that the rear wall of the drum is attached to the support star at a plurality of openings of the support star with differently sized inlet and outlet diameters, in that for each opening a nozzle made from the sheet metal of the rear wall of the drum is inserted into the associated opening is drawn through the smaller diameter entrance, then the nozzle is extended towards the walls of the opening which define the size difference between the entrance and exit diameters of the opening.
- the method of the invention provides that the designated deformation of the nozzle already drawn by the use of a pressing tool is carried out by passing the pressing tool with a complementary surface matching the truncated cone surface of the later nozzle shape through the larger hole and the upper part of the nozzle and pressing it against the inside of the nozzle, thereby achieving its final shape.
- the method of the invention is applicable to any configuration of the support star. However, since this conventionally has a star shape, the method of the invention provides that at least one opening for a nozzle in the drum rear wall is provided in each mounting arm of the star.
- the walls of the opening, against which the corresponding nozzle of the drum presses have a surface which widens in the direction of the upper end of the nozzle, so that when the nozzle is deformed, the latter widens in the direction of said surface opens and presses against the surface. This creates the attachment between the support star and the drum.
- the enlargement of the walls of the opening against which the nozzle presses can take any shape.
- it has a frusto-conical shape, preferably in its entirety determined by the nozzle.
- the walls of the opening which define the size difference between the inlet and outlet diameters and against which the respective nozzle of the drum presses, contain at least one gradation to which the nozzle is attached adapts when deforming and pressing.
- Another embodiment contains several steps in the frustoconical area of the opening in order to secure the drum even more securely.
- the method according to the invention provides the possibility of adding at least one lateral widening, at least in a region of the holding arms, in which at least one opening is made, in which a corresponding nozzle of the drum is held.
- at least one lateral widening is arranged at the lateral ends of each mounting arm.
- the method of the invention can provide that the nozzle of the drum is carried out using an indentation method.
- the fastening obtained by means of the method of the invention is characterized in that the support star has a plurality of openings with different inlet and outlet diameters, in each of which a nozzle is inserted from the smaller inlet diameter, which is pulled out of the rear wall of the drum such that the nozzle presses at least against that area of the walls of the opening which defines the differences between the inlet and outlet diameters.
- Figure 1 is a partial perspective view of the interior of the
- Drum on the back of which the nozzles can be seen, which are designed by pressing in to fasten the support star and which is located on the outside of the drum,
- Figure 2 shows a partial perspective view of the outside of the drum and one of the support arms of the support star to which it is attached, also showing a detail of the opening made in the support star for carrying out the attachment of the nozzle of the drum.
- FIGS. 3a to 3d show a schematic representation of the various processes which are provided by the method of the invention for carrying out the fastening of the support star to the drum,
- Figure 4 is a partial perspective view of another
- Figure 5 shows a detail from the example of Figure 4 in
- a drum 1 and a supporting star 2 are partially shown in the figures. Since these are notoriously known elements, all of these elements have not been shown in full.
- the drum 1 is fastened on the outside of its rear wall to the mounting arms 3 of the support star 2, which is star-shaped.
- the support star 2 is in turn firmly connected to a shaft 4 which is connected to a drive motor (not shown) in order to generate the rotation of the drum 1 in a tub (not shown).
- the rear wall of the drum 1 is provided with a groove 5 in a star shape, in which the mounting arms 3 of the support star 2 are located.
- One of the fixings conventionally used to connect the ends of the support arms 3 of the support star 2 to the drum 1 is to attach a rivet 11 ( Figures 4 and 5) by means of an intermediate layer of a metal plate 12 which reinforces the connection, such as referred to above in relation to the state of the art as inadequate for washing machines which spin at a very high speed.
- the invention therefore proposes an alternative or supplementary fastening to the fastening produced in a conventional manner, for which purpose at least one opening 6 with frustoconical side walls is formed in each mounting arm 3 of the support star 2, which define an inlet with a larger diameter than the outlet.
- two openings are made for each of the holding arms, but it is possible to arrange a single opening or more than two, depending on the load on the drum caused by the spin speed.
- the nozzle 8 can be produced by pushing in or pulling in from the inside of the rear wall of the drum 1.
- a puncturer 9 is inserted through the outside (larger diameter) of the opening 6, the puncturer 9 having a frustoconical surface which corresponds to the frustoconical surface 7 of the opening 6.
- the drive-through 9 When the drive-through 9 is lowered, its lower end penetrates into the nozzle 8, so that the nozzle 8 widens until it presses against the frustoconical walls 7 of the opening 6 (FIG. 3c), so that when the drive-through 9 (FIG. 3d) is removed the drum 1 is attached to the support star 2. In this way, an attachment is achieved with multiple mounting points that share the load, which ensures greater durability.
- a gradation (not shown in the figures) can be contained in the frustoconical wall 7.
- the punch 9 must contain a corresponding gradation in order to be able to exert the correct pressure over the entire area of the nozzle 8 against the walls of the opening.
- the invention provides that, if desired, respective extensions 10 can be provided for larger loads at the ends of the support arms 3 of the support star, in which at least one opening 6 is contained in order to carry out the fastening according to the invention, a conventional one also Connection can be provided using the rivet 11 already discussed above.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50306319T DE50306319D1 (de) | 2002-07-19 | 2003-07-09 | Verfahren zur befestigung der trommel einer waschmaschine und befestigungseinrichtung dafür |
EP03764958A EP1525063B1 (de) | 2002-07-19 | 2003-07-09 | Verfahren zur befestigung der trommel einer waschmaschine und befestigungseinrichtung dafür |
ES03764958T ES2279171T3 (es) | 2002-07-19 | 2003-07-09 | Procedimiento de fijacion del tambor de una lavadora y fijacion a este efecto. |
US11/037,635 US7841800B2 (en) | 2002-07-19 | 2005-01-18 | Mounting fixture and drum assembly |
US12/849,856 US8056375B2 (en) | 2002-07-19 | 2010-08-04 | Method for fixing the drum of a washing machine and fitting for the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ESP200201803 | 2002-07-19 | ||
ES200201803A ES2237976B1 (es) | 2002-07-19 | 2002-07-19 | Procedimiento de fijacion del tambor de una lavadora y la correspondiente fijacion. |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/037,635 Continuation US7841800B2 (en) | 2002-07-19 | 2005-01-18 | Mounting fixture and drum assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004009264A1 true WO2004009264A1 (de) | 2004-01-29 |
Family
ID=30470588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/007437 WO2004009264A1 (de) | 2002-07-19 | 2003-07-09 | Verfahren zur befestigung der trommel einer waschmaschine und befestigung dafür |
Country Status (6)
Country | Link |
---|---|
US (2) | US7841800B2 (de) |
EP (1) | EP1525063B1 (de) |
DE (1) | DE50306319D1 (de) |
ES (2) | ES2237976B1 (de) |
PL (1) | PL373263A1 (de) |
WO (1) | WO2004009264A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006037764A1 (de) * | 2004-10-01 | 2006-04-13 | BSH Bosch und Siemens Hausgeräte GmbH | Tragstern für eine waschmaschine |
WO2009021934A1 (de) * | 2007-08-14 | 2009-02-19 | BSH Bosch und Siemens Hausgeräte GmbH | Befestigungsvorrichtung zum befestigen eines trommel-tragelements an einer trommel einer wasch- und/oder trockenmaschine |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2284308B1 (es) * | 2005-03-08 | 2008-08-01 | Bsh Electrodomesticos España, S.A. | Tambor para maquina lavadora de ropa. |
KR102017530B1 (ko) * | 2012-11-22 | 2019-09-04 | 삼성전자주식회사 | 리프터와 이를 가지는 건조기 |
KR102639680B1 (ko) * | 2016-12-23 | 2024-02-26 | 삼성전자주식회사 | 세탁기 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1388731A (en) * | 1971-05-28 | 1975-03-26 | Zanussi A Spa Industrie | Drum for a washing machine or dryer |
DE3041506A1 (de) * | 1980-11-04 | 1982-06-09 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Trommel fuer eine stirnbeschickbare trommelwaschmaschine |
DE4326496A1 (de) * | 1993-08-06 | 1995-02-09 | Bosch Siemens Hausgeraete | Trommelwaschmaschine mit einer drehbar gelagerten Wäschetrommel |
EP1108481A2 (de) * | 1999-12-15 | 2001-06-20 | Coparl, S.A. | Verfahren zum schweisslosen Fügen von Blechen, beim Nieten |
US6401363B1 (en) * | 1997-04-24 | 2002-06-11 | Pietro Miramondi | Drum assembly for washing and drying machines and method for making it |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1472434A (en) * | 1922-11-15 | 1923-10-30 | Blackstone Mfg Company | Cylinder for washing machines |
US2289162A (en) * | 1940-12-19 | 1942-07-07 | George H Amonsen | Washing machine |
US2415695A (en) * | 1944-10-20 | 1947-02-11 | Cann Edward | Attaching nuts to plates |
AT172176B (de) * | 1948-03-23 | 1952-08-11 | Fischer Kuehler Metall | Verfahren zum Verbinden von Teilen aus thermoplastischer Masse mit Körpern aus anderem Werkstoff |
US2816742A (en) * | 1955-02-21 | 1957-12-17 | W M Cisseil Mfg Company | Fabric drying machine |
US2925665A (en) * | 1957-04-08 | 1960-02-23 | Maytag Co | Clothes drier without casing |
IT206388Z2 (it) * | 1985-07-05 | 1987-08-10 | Faini Spa | Cestello per macchien lavatrici con carica dall'alto. |
DE8803554U1 (de) * | 1988-03-16 | 1988-05-11 | Kremo Werke Hermanns Gmbh & Co Kg, 4150 Krefeld | Verankerungselement, insbesondere zur Befestigung von Gasbeton-Wandplatten an Stahlstützen |
JP3330982B2 (ja) * | 1992-08-21 | 2002-10-07 | 東北パイオニア株式会社 | リベッティング結合部のかしめ方法 |
IT1258088B (it) * | 1992-10-29 | 1996-02-20 | Zanussi Elettrodomestici | Procedimento per la fabbricazione di cesto in plastica e cesto cosi' ottenuto. |
DE19532783A1 (de) * | 1994-09-06 | 1996-03-07 | Miele & Cie | Vorrichtung zur drehbaren Lagerung einer Trommel einer Trommelwaschmaschine mit einem Tragstern |
ES2126434B1 (es) * | 1995-05-26 | 2000-01-01 | Mikalor Sa | Mejoras introducidas en los medios de abrochado de los extremos de la lamina formativa de abrazaderas de banda metalica. |
FR2752886B1 (fr) * | 1996-09-05 | 1998-11-06 | Hutchinson | Procede d'assemblage de deux toles l'une sur l'autre ; assemblage ainsi obtenu |
ES2151330B1 (es) * | 1997-01-21 | 2001-06-16 | Balay Sa | Sistema de cierre mejorado para cuba plastica de lavadora. |
GB2338543B (en) * | 1998-06-18 | 2002-08-07 | Gen Domestic Appliances Ltd | Washer dryer |
JP2000150736A (ja) * | 1998-11-13 | 2000-05-30 | Shinko Electric Ind Co Ltd | 半導体モジュール用放熱板および半導体モジュール |
-
2002
- 2002-07-19 ES ES200201803A patent/ES2237976B1/es not_active Expired - Fee Related
-
2003
- 2003-07-09 DE DE50306319T patent/DE50306319D1/de not_active Expired - Lifetime
- 2003-07-09 EP EP03764958A patent/EP1525063B1/de not_active Expired - Lifetime
- 2003-07-09 ES ES03764958T patent/ES2279171T3/es not_active Expired - Lifetime
- 2003-07-09 WO PCT/EP2003/007437 patent/WO2004009264A1/de active IP Right Grant
- 2003-07-09 PL PL03373263A patent/PL373263A1/xx unknown
-
2005
- 2005-01-18 US US11/037,635 patent/US7841800B2/en not_active Expired - Fee Related
-
2010
- 2010-08-04 US US12/849,856 patent/US8056375B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1388731A (en) * | 1971-05-28 | 1975-03-26 | Zanussi A Spa Industrie | Drum for a washing machine or dryer |
DE3041506A1 (de) * | 1980-11-04 | 1982-06-09 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Trommel fuer eine stirnbeschickbare trommelwaschmaschine |
DE4326496A1 (de) * | 1993-08-06 | 1995-02-09 | Bosch Siemens Hausgeraete | Trommelwaschmaschine mit einer drehbar gelagerten Wäschetrommel |
US6401363B1 (en) * | 1997-04-24 | 2002-06-11 | Pietro Miramondi | Drum assembly for washing and drying machines and method for making it |
EP1108481A2 (de) * | 1999-12-15 | 2001-06-20 | Coparl, S.A. | Verfahren zum schweisslosen Fügen von Blechen, beim Nieten |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006037764A1 (de) * | 2004-10-01 | 2006-04-13 | BSH Bosch und Siemens Hausgeräte GmbH | Tragstern für eine waschmaschine |
EA009991B1 (ru) * | 2004-10-01 | 2008-06-30 | Бсх Бош Унд Сименс Хаусгерете Гмбх | Крестовина для стиральной машины |
WO2009021934A1 (de) * | 2007-08-14 | 2009-02-19 | BSH Bosch und Siemens Hausgeräte GmbH | Befestigungsvorrichtung zum befestigen eines trommel-tragelements an einer trommel einer wasch- und/oder trockenmaschine |
ES2339625A1 (es) * | 2007-08-14 | 2010-05-21 | Bsh Electrodomesticos España, S.A | Dispositivo de fijacion, para fijar un elemento de soporte de tambor a un tambor de una maquina lavadora y/o maquina secadora. |
Also Published As
Publication number | Publication date |
---|---|
US20050160772A1 (en) | 2005-07-28 |
DE50306319D1 (de) | 2007-03-08 |
US8056375B2 (en) | 2011-11-15 |
EP1525063B1 (de) | 2007-01-17 |
EP1525063A1 (de) | 2005-04-27 |
PL373263A1 (en) | 2005-08-22 |
ES2279171T3 (es) | 2007-08-16 |
US20100294005A1 (en) | 2010-11-25 |
ES2237976B1 (es) | 2007-06-01 |
ES2237976A1 (es) | 2005-08-01 |
US7841800B2 (en) | 2010-11-30 |
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