EP1091037B1 - Machine destinée au traitment du linge avec un tambour montés en porte-à-faux - Google Patents

Machine destinée au traitment du linge avec un tambour montés en porte-à-faux Download PDF

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Publication number
EP1091037B1
EP1091037B1 EP00120913A EP00120913A EP1091037B1 EP 1091037 B1 EP1091037 B1 EP 1091037B1 EP 00120913 A EP00120913 A EP 00120913A EP 00120913 A EP00120913 A EP 00120913A EP 1091037 B1 EP1091037 B1 EP 1091037B1
Authority
EP
European Patent Office
Prior art keywords
bearing
rings
shaft journal
laundry treating
treating machine
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.)
Expired - Lifetime
Application number
EP00120913A
Other languages
German (de)
English (en)
Other versions
EP1091037A1 (fr
Inventor
Franz Aring
Heinz-Theo Bellmann
Rainer Blum
Matthias Knoke
Andreas Dr. Kratzsch
Thorsten Kuka
Heinz Maass
Antje Nieder
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP1091037A1 publication Critical patent/EP1091037A1/fr
Application granted granted Critical
Publication of EP1091037B1 publication Critical patent/EP1091037B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters

Definitions

  • the invention relates to a laundry treatment machine with an overhung Drum that is rotatable about a horizontal or inclined axis, being in a bearing housing two radial ball bearings with their outer rings free of seats and with an axial distance are arranged to each other and with their inner rings connected to the drum Pick up the shaft journal.
  • Such bearing arrangements are in laundry treatment machines, especially at Washing machines and washer dryers are generally known (e.g. Miele washing machines with the serial designation W 840).
  • the aforementioned washing machine is rotatably mounted in a tub Drum, which is connected to the shaft journal, formed.
  • the tub holds on its back wall a bearing cross with a bearing housing for the arrangement of the storage.
  • In the center of the tub's rear wall is a passage for the shaft journal.
  • the Shaft journal carries a pulley for the drum drive belt at its rear end.
  • the rotor of a so-called direct drive can be found there (see DE 198 06 258 A2) be attached. Two spaced apart take place in the bearing housing Radial ball bearing rotatably mounted on the shaft journal
  • a disc spring in front of the inner ring of the drum-side bearing is designed to play restrict the floating bearing and reduce the noise. Due to the The use of disc springs or the like is the assembly of the radial ball bearings by the number of required components expensive. This measure is also not suitable for the Remove internal clearance at the fixed bearing on the drive side. That's why it still happens disadvantages described above.
  • the invention thus presents the problem caused by the design of the bearing arrangement in the disadvantages of the fixed / floating bearing arrangement to be eliminated and the component expenditure to simplify assembly.
  • the advantages which can be achieved with the invention consist of a lower number of components and in particular by installing a braced bearing arrangement in that an acoustically smooth running of the drum is achieved even when spinning.
  • the braced bearing arrangement has an advantageous effect on the life of the bearings out.
  • bearing arrangement as a completely pre-assembled storage module in a specially designed bearing housing z. B. in laundry treatment machines a plastic tub can be used.
  • the storage module can be advantageous are encapsulated as a complete assembly.
  • the inner rings of both radial ball bearings are fixed on the shaft journal in a tight fit and under tension using a concentric to the Shaft journal arranged spacer sleeve under the action of an outer axially acting Contact force.
  • the easiest way to fix this is between the bottom of the drum and a screw for attaching a pulley or a direct drive rotor to achieve built tension chain, the tension chain from a race a shaft seal, the inner rings themselves, the sleeve and the pulley or Direct drive rotor exists.
  • tolerance zones of the inner rings and the tolerance zones of the Shaft journals are selected such that inner rings and shaft journals have a clearance fit form, arises with such a structure after the completion of the bearing arrangement Shaft journal and pulley or rotor the operating position of the bearing arrangements independently.
  • the tolerance zones of the outer rings and the tolerance zones of the Bearing housing bores are selected such that outer rings and bores are an interference fit form. The circumferential forces in the centrifugal mode can then not be used for hiking Lead outer rings.
  • FIG. 1 shows the bearing arrangement for the shaft journal (1) of a laundry treatment machine with a tub (2) and a drum (3) rotatably mounted therein Shot of the laundry in the side view shown in section.
  • the bearing arrangement for the drum (3) is arranged in the center of the tub wall.
  • the bearing cross is on the tub (2) (6) with the bearing housing (7) for receiving the bearing arrangement for the drum (3) attached.
  • the bearing arrangement for the drum (3) consists of a front, drum-side radial ball bearing (9) and a rear, drive-side radial ball bearing (10), which accommodate the shaft journal (1) so that it can rotate and overhung.
  • the bearing housing (7) is cylindrical with a through hole (20) for the shaft journal (1) trained.
  • the end faces of the bearing housing (7) each have a bearing housing bore (11a, 11b) with a larger diameter than the through hole (20), which forms the bearing seat.
  • the outer ring (9b) of the drum-side bearing (9) comes on the by the difference in diameter of the annular stop surface (12a) Investment. Between the outer ring (10b) of the drive-side bearing (10) and the stop surface (12b) there is a gap X, the function of which will be explained later.
  • the outer rings (9b, 10b) are fixed in the bearing housing bores (11a, 11b) by a press fit.
  • the bearing inner rings (9a, 10a) are fixed free of any leakage in relation to the shaft journal and axially braced by applying an external, axially acting contact force. Thus, despite a match fit, they form a tight connection. This is done using the tension chain described below: A specially designed shaft seal (14) is pressed on the drum side onto an annular collar (15) on the bearing housing (7). Due to its continuous race (14a), it is suitable for the axial transmission of force from the drum base (3a) to the drum-side inner ring (9a). The shaft journal (1) with the drum (3) is inserted from the drum-side assembly direction. The pulley (8) is placed on the opposite side.
  • the screw (16) of the pulley (8) is tightened, as a result of which the bearing inner rings are braced with the interposition of a sleeve (13) and fixed in the axial direction.
  • the bearing arrangement is tensioned via the pulley (8).
  • the bearing is braced via the rotor of the direct drive.
  • the length of the tensioning chain is oversized compared to the length of the shaft journal (1).
  • a clearance Y creates a gap Y between the hub (8a) of the pulley and a contact surface (1a) on the shaft journal (1).
  • FIG. 2 shows the bearing arrangement in a bearing housing (7) as a completely pre-assembled Storage module.
  • This storage module can e.g. B. when used in a laundry treatment machine overmolded completely pre-assembled with plastic tub. Besides, can the storage module also in single drum washing machines and washing machines with direct drives or z. B. can also be used in tumble dryers.
  • the module shown can include only the bearing arrangement or be expanded by the shaft seal (14).
  • the bearings are installed (9, 10) in a pre-assembly step by prestressing the inner rings (9a, 10a) an auxiliary device.
  • the assembly of the bearing arrangement or the bearing module follows described with reference to FIGS. 3a to 3d for a bearing arrangement according to FIG. 1:
  • the drum-side bearing (9) with its outer ring (9b) is annular Stop surface (12a) pressed into the bearing housing bore (11a) ( Figure 3a).
  • the Press-in device (17) the inner ring (9a) with a defined force against the Outer ring (9b) biased towards the center of the bearing housing (7) and in this position held.
  • the sleeve (13) is, for example a holding mandrel, not shown, into the bearing housing and to the inner ring (9a) created ( Figure 3b).
  • the sleeve (13) can also by the drum-side assembly direction before or when installing the bearing (9).
  • the drive-side bearing (10) is only so far into the bearing seat (11) via the outer ring pressed in until the bearing seat width of the bearing (10) is fully supported ( Figure 3c). This is done at the same time the preload of the inner ring (10a) with respect to the outer ring (10b).
  • the inner ring (10a) is pressed against the outer ring (10b) by means of the press-in device (18) moved to the center of the bearing housing and also preloaded.
  • the press-in device (18) moved to the center of the bearing housing and also preloaded.
  • the tension measure as a ratio of the distances of the Outer rings to the distance between the inner rings defined solely by the size of the gap width X.
  • the Length of the spacer sleeve (13) and the depth of the bearing housing bores (11a, 11b) must be be be dimensioned such that the gap when the inner ring (10a) lies against the sleeve Minimum dimension, otherwise the desired preload cannot be achieved.
  • the Inner bearing rings of the bearings (9, 10) form one with the sleeve (13) in the auxiliary device (17, 18) pre-tensioned assembly chain.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Centrifugal Separators (AREA)
  • Rolling Contact Bearings (AREA)

Claims (9)

  1. Machine pour le traitement du linge équipée, d'un tambour (3) monté en porte-à-faux qui peut tourner autour d'un axe horizontal ou incliné, sachant que dans un logement de palier (7) sont logés deux roulements à billes radiaux (9, 10) dont les bagues extérieures (9b, 10b) présentent un ajustement serré et un espacement axial et dont les bagues intérieures (9a, 10a) entourent un tourillon d'arbre (1) relié au tambour, caractérisée en ce que les bagues intérieures (9a, 10a) des deux roulements à billes radiaux (9, 10) sont disposées, à l'état monté, sans jeu par rapport au tourillon d'arbre (1) et avec une précontrainte axiale définie par rapport aux bagues extérieures (9b, 10b).
  2. Machine pour le traitement du linge selon la revendication 1, caractérisée en ce que les bagues intérieures (9a, 10a) des deux roulements à billes radiaux (9, 10) sont immobilisées avec un ajustement serré et avec précontrainte sur le tourillon d'arbre (1), sous l'effet d'une force d'application extérieure s'exerçant dans la direction radiale, au moyen d'une douille d'écartement (13) disposée de façon concentrique par rapport au tourillon d'arbre (1).
  3. Machine pour le traitement du linge selon la revendication 1 ou 2, caractérisée en ce que l'immobilisation avec une précontrainte axiale des bagues intérieures (9a, 10a) sur le tourillon d'arbre (1) s'effectue à l'aide d'une chaíne de haubanage créée entre le fond (3a) du tambour (3) et une vis (16) destinée à fixer une poulie à courroie (8) ou un rotor à entraínement direct, qui est constituée par un anneau de roulement (14a) d'une garniture étanche d'arbre (14), par les bagues intérieures (9a, 10a) elles-mêmes, par la douille (13) et par la poulie à courroie (8) ou le rotor à entraínement direct.
  4. Machine pour le traitement du linge selon au moins l'une des revendications 1 à 3, caractérisée en ce que les plages de tolérances des bagues intérieures (9a, 10a) et les plages de tolérances du tourillon d'arbre (1) sont choisies de telle manière que les bagues intérieures et le tourillon d'arbre (1) forment un ajustement avec jeu.
  5. Machine pour le traitement du linge selon au moins l'une des revendications 1 à 4, caractérisée en ce que les bagues intérieures (9a, 10a) des deux roulements à billes radiaux (9, 10) sont précontraintes en direction du centre du logement de palier.
  6. Machine pour le traitement du linge selon au moins l'une des revendications 1 à 5, caractérisée en ce que les plages de tolérances des bagues extérieures (9b, 10b) et les plages de tolérances des perçages (11a, 11b) du logement de palier sont choisies de telle manière que les bagues extérieures et les perçages (11a, 11b) forment un ajustement serré.
  7. Machine pour le traitement du linge selon la revendication 6, caractérisée en ce que la longueur de la douille d'écartement (13) et la profondeur des perçages (11a, 11b) du logement de palier sont dimensionnées de telle sorte qu'il se forme une fente (X) entre la surface de butée (12a, 12b) d'au moins un perçage (11a) et la bague extérieure (10b) logée dans ledit perçage (11a).
  8. Machine pour le traitement du linge selon la revendication 7, caractérisée en ce que la fente (X) se trouve dans la zone du roulement à billes radial (10) situé du côté de l'entraínement.
  9. Machine pour le traitement du linge selon les revendications 3 et 8, caractérisée en ce que la chaíne de haubanage (8, 9a, 10a, 13, 14) est plus longue que le tourillon d'arbre (1).
EP00120913A 1999-09-28 2000-09-26 Machine destinée au traitment du linge avec un tambour montés en porte-à-faux Expired - Lifetime EP1091037B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19946288 1999-09-28
DE19946288 1999-09-28

Publications (2)

Publication Number Publication Date
EP1091037A1 EP1091037A1 (fr) 2001-04-11
EP1091037B1 true EP1091037B1 (fr) 2003-06-18

Family

ID=7923475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00120913A Expired - Lifetime EP1091037B1 (fr) 1999-09-28 2000-09-26 Machine destinée au traitment du linge avec un tambour montés en porte-à-faux

Country Status (4)

Country Link
EP (1) EP1091037B1 (fr)
AT (1) ATE243275T1 (fr)
DE (2) DE50002576D1 (fr)
ES (1) ES2197849T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016214817A1 (de) 2016-08-10 2018-02-15 BSH Hausgeräte GmbH Lageranordnung für eine fliegend gelagerte Wäschetrommel und Wäschebehandlungsmaschine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10052586C1 (de) * 2000-10-24 2001-12-13 Miele & Cie Wäschebehandlungsmaschine mit einer fliegend gelagerten Trommel
ITTO20130745A1 (it) * 2013-09-13 2015-03-14 Skf Ab Cannotto costampabile con vasche di lavatrici
DE102014206634A1 (de) 2014-04-07 2015-10-08 BSH Hausgeräte GmbH Lageranordnung und Waschmaschine mit einer Lageranordnung
CN114123565B (zh) * 2021-11-01 2022-12-20 西安航天精密机电研究所 一种转子无径向跳动的有限转角力矩电机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3199318A (en) * 1963-02-20 1965-08-10 Eugene B Sullivan Cleaning machine and seal means therefor
DE1460896A1 (de) * 1965-08-12 1969-04-30 Constructa Werke Gmbh Waschtrommellager fuer eine im Laugenbehaelter um eine waagerechte Achse fliegend gelagerte Waschtrommel
SE361715B (fr) * 1972-11-13 1973-11-12 Skf Ind Trading & Dev
DD153614A1 (de) * 1980-10-15 1982-01-20 Erich Barth Trommellagerung,insbesondere fuer trommelwaschmaschinen und zentrifugen
DE4422853C2 (de) * 1994-06-30 2003-06-12 Miele & Cie Lagerabdichtung für Radial-Wälzlager
WO1998036123A2 (fr) * 1997-02-17 1998-08-20 Miele & Cie. Gmbh & Co. Appareil de traitement de lessive avec un moteur d'entrainement monte sur l'arbre du tambour

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016214817A1 (de) 2016-08-10 2018-02-15 BSH Hausgeräte GmbH Lageranordnung für eine fliegend gelagerte Wäschetrommel und Wäschebehandlungsmaschine

Also Published As

Publication number Publication date
DE10047995A1 (de) 2001-03-29
EP1091037A1 (fr) 2001-04-11
ES2197849T3 (es) 2004-01-16
DE50002576D1 (de) 2003-07-24
ATE243275T1 (de) 2003-07-15

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