EP0991805B1 - Drive unit for a washing machine - Google Patents

Drive unit for a washing machine Download PDF

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Publication number
EP0991805B1
EP0991805B1 EP98929430A EP98929430A EP0991805B1 EP 0991805 B1 EP0991805 B1 EP 0991805B1 EP 98929430 A EP98929430 A EP 98929430A EP 98929430 A EP98929430 A EP 98929430A EP 0991805 B1 EP0991805 B1 EP 0991805B1
Authority
EP
European Patent Office
Prior art keywords
support part
drive device
rotor
stator support
bell
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
EP98929430A
Other languages
German (de)
French (fr)
Other versions
EP0991805B2 (en
EP0991805A1 (en
Inventor
Klaus Bierbach
Reinhard Heyder
Jörg SKRIPPEK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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.)
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Publication date
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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
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • 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
    • Y10T29/49002—Electrical device making
    • Y10T29/49009—Dynamoelectric machine

Definitions

  • the invention relates to a drive device for a washing machine with an inside a bearing sleeve attached to a bottom wall of a tub, stiff support star over an at least approximately horizontal Shaft-mounted laundry drum, with the drive device on the back of the tub is mountable and from a flat motor with a stand support and excitation windings and with a rotor and magnetizable poles exists and drives the laundry drum directly.
  • the invention has for its object the drive device defined at the outset to be designed so that the engine is pre-assembled and tested by the manufacturer for Washing machines can be delivered without having to install the motor on the Washing machine still requires an intervention that ensures compliance with the proper Operation of the engine could endanger the required tolerances. It is also said to simplify assembly in the washing machine plant.
  • this object is achieved in that the stator support part and the rotor of the engine for the duration of its transportation until the final assembly on the bottom wall of the tub in a position corresponding to the operating position relative position of the stator support part releasably connected to each other are. In this way it can be ensured that the engine is in the best possible condition equipped manufacturing plant can be fully assembled and checked before it Users, e.g. the factory of a washing machine manufacturer.
  • the drive device according to the invention can be used to save a special stator support part are advantageously further developed in such a way that the stator support part is formed by a laminated core for the field windings.
  • the excitation windings can be better protected and the magnetizable poles in a particularly advantageous manner Laminated core on the side facing the support star with a plate-shaped Be provided ring, the outer edge of a labyrinth seal to the Bell edge is enough.
  • Both of the aforementioned embodiments also have the advantage that for the locking screws There are no other holes in the rotor bell must be than that for attaching the motor to the support star.
  • To assemble the Motors on the washing machine is first the locked motor over his Runner bell connected to the shaft journal of the laundry drum. Then one Pull out the locking pin or one of the locking screws and the to the star sought overlapping rotational position of the motor and in the one that has become free Screwed in a mounting screw. After that, with all the holes in order do so.
  • the drive device according to the invention is advantageously the best protected by the fact that the stator support part extends over the field windings extends beyond and its edge together with that of the bell a labyrinth seal forms.
  • the field windings and poles can also be towards the center of rotation be better protected by a further development of the invention in which the stand supporting part and / or the bell on the one facing the space Side is provided with a circumferential collar, which with the counterpart on the Bell or on the stand support part forms a labyrinth seal.
  • the support star 1 has three beams. Its upward beam 2 lies in the plane of the drawing 1, 3 and 5. The two downward rays show backwards or forwards out of the drawing level and are therefore not shown. 1, the support star 1 is on by means of screws, not shown attached to the rear bottom wall 3 of the tub. For storing the The shaft star 4 of the laundry drum, not shown, has the support star. 1 one Bearing sleeve 5 with roller bearings. Also extends in Figs. 1 and 3 in the same Starting from the support star 1, a mounting flange 6 on which the motor 7th can be screwed.
  • the motor 7 shown in Fig. 1 and 2 has a plate-shaped stator support part 8, whose outer edge 9 extends to the edge of the rotor bell 10 and with it together forms a labyrinth seal 11.
  • the excitation windings 13 On the projecting section 12 of the Stator support part 8 are the excitation windings 13 with their laminations 14 on Scope distributed. They stand over an air gap to the magnetizable poles 15 opposite, attached to the inner circumference of the bell rim 16 of the rotor 10 are.
  • the stator support part 8 has a ring on its surface facing the rotor 10 Locking eyes 17 which extend to just before the inner surface of the rotor bell 10. Your locking holes 18 are smooth-walled or threaded as at 19. In the smooth-walled locking holes 18 are locking pins 20 for transport inserted, which correspond to corresponding locking holes 21 in the rotor bell 10. At least one - better two or more - of the locking eyes 17 has threaded holes 19 for screwing in locking screws 22 with which the transport position can be fixed immovably. For precise depth positioning while maintaining the necessary distance of the bell 10 from Stand support part 8 is a spacer sleeve before screwing in the locking screws 22 23 to use.
  • the rotor bell of this motor 7 is attached to the Threaded stub 24 of the shaft journal 4 is attached, screwed on and not illustrated manner secured by means of a screw in the position in which the stand supporting part 8 rests on the attachment eyes 6 of the star 1. Then they will Fastening holes 25 in the stand support part 8 with the fastening eyes 6 for covering brought and screws 26 screwed. As access to the Fastening screws 26 serve the machining openings 27 in the rotor bell 10. Then locking pins 20 and locking screws 22 are unscrewed and the Distance sleeves 23 removed. Locking pins 20 and screws 22 and the spacer sleeves 23 can be returned to the engine plant as return parts.
  • the mounting holes 29 are not only used to attach the motor 30 to the support star 1 but also to fix the motor parts (stator and rotor) to each other before installing the engine 30.
  • the holes in the rotor bell 10 can be part the holes of this circle exclusively as mounting holes 29 and another Part serve as locking holes. These two types of holes can be easier Differentiation also lie on circles with different radii. Then can the holes in the rotor bell 10 also have different diameters, e.g. the machining holes 36 have a larger diameter than that for the Spacers 37 provided holes.
  • the installation of the motor 30 in the manufacturing plant for washing machines is similar simple as in the example of FIGS. 1 and 2.
  • the rotor bell 10 is first on screwed the threaded stub 24 until the outer surface of the ring 32 on the Attachment eyes 31 comes to rest. Then this position is in proportion secured to the shaft journal 4 (screw or similar). If the mounting holes from the Locking holes are different, only the fastening screws 26 rotated through the processing holes 36 into the mounting eyes 31. Then the locking screws 36 and the spacer sleeves 37 are removed and sent to the manufacturer of the engine returned. If the mounting holes and the locking holes are designed the same, only some, e.g. three; the holes for locking by means of the spacer sleeves 37 and the locking screws 35 can be used.
  • the stator support part 38 on a circumferential collar 39 is also equipped with excitation windings 40 and laminated cores which face poles 41 that can be magnetized via an air gap. These poles are fastened in the same way as in the examples described above on the inner circumference of the edge 42 of a rotor bell 43 which is provided with machining holes 44 for fastening screws 45.
  • the area created by the overlapping flange 47 of the stator support part 38 serves as the labyrinth seal 46. There is no need for a special seal on the inside because this area is already dustproof due to the construction described.
  • the stand support member 38 has a central guide sleeve 48, the outer cylindrical surface 49 together with the short inner cylindrical surface 50 of an annular bead 51 the rotor bell 43 forms a sliding fit (e.g. H7 / j6), which is used to secure the position the engine parts are used during transportation. In this securing position the engine parts are fixed with transport locking screws 52 and sit with their faces together.
  • the laminated core of the field windings 40 is included offset inward from the poles 41, for example by 6 to 7 mm.
  • the guide sleeve 48 forms with its inner cylindrical surface opposite the outer cylindrical surface the bearing sleeve 5 also has a sliding fit (e.g. also H7 / j6).
  • a sliding fit e.g. also H7 / j6
  • the guide sleeve 48 is pushed onto the bearing sleeve 5 and rotor bell 43 with its central hole in the serration of the stub shaft 53 led.
  • the central shaft screw 54 is slightly tightened, and the transport locking screws 52 are unscrewed. After the mounting screws 45 are tightened, the shaft screw can also be tightened become.
  • For the correct dimensional matching of the engine parts to each other in the installed condition provide the spacer 55 between the stand support member 38 and Support star 1 on the one hand and the spacer 56 between the rotor bell 43 and one Paragraph 57 on the shaft journal 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Motor Or Generator Frames (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Description

Die Erfindung betrifft eine Antriebsvorrichtung für eine Waschmaschine mit einer innerhalb einer Lagerhülse eines an einer Bodenwand eines Laugenbehälters angebrachten, steifen Tragsterns über eine wenigstens annähernd horizontal liegende Welle gelagerten Wäschetrommel, wobei die Antriebseinrichtung an der Rückseite des Laugenbehälters montierbar ist und aus einem flachen Motor mit einem Ständertragteil und Erregerwicklungen und mit einem Läufer und magnetisierbaren Polen besteht und die Wäschetrommel direkt antreibt.The invention relates to a drive device for a washing machine with an inside a bearing sleeve attached to a bottom wall of a tub, stiff support star over an at least approximately horizontal Shaft-mounted laundry drum, with the drive device on the back of the tub is mountable and from a flat motor with a stand support and excitation windings and with a rotor and magnetizable poles exists and drives the laundry drum directly.

Eine derartige Antriebsvorrichtung ist aus der DE 39 27 426 A1 bekannt. Darin besteht das Ständertragteil aus einem Isolierteil, auf dem die Erregerwicklungen montiert sind. Das Isolierteil ist kreisringförmig und auf die Lagerhülse des Tragsterns geschoben. Der glockenförmige Läufer umgreift diese Montageeinheit und ist mit einer Schraubkappe am Wellenzapfen der Wäschetrommel befestigt, der die Lagerhülse nach hinten überragt. Zur Montage des Motors muß daher zunächst das Ständertragteil. mit den Erregerwicklungen (vormontiert) auf die Lagerhülse geschoben werden. Anschließend muß die Läuferglocke auf den Wellenzapfen gesetzt und ver-schraubt werden. Die für den ordnungsgemäßen Betrieb des Motors nötige Einhaltung der inneren Toleranzen (hauptsächlich die Positionierung der Erregerwicklungen in Bezug auf die magnetisierbaren Läuferpole) kann dabei jedoch keineswegs gewährleistet werden, weil im Montagewerk für Waschmaschinen keine Zeit und keine Arbeitsmittel für die Einhaltung dieser Toleranzen zur Verfügung stehen. Such a drive device is known from DE 39 27 426 A1. That is the stator support part from an insulating part on which the field windings are mounted are. The insulating part is circular and on the bearing sleeve of the star pushed. The bell-shaped rotor surrounds this assembly unit and is with a Screw cap attached to the shaft journal of the laundry drum, which holds the bearing sleeve towered over to the rear. To mount the motor, therefore, the stator support must first. with the excitation windings (pre-assembled) pushed onto the bearing sleeve become. Then the rotor bell must be placed on the shaft journal and screwed on become. The compliance required for the proper operation of the engine the internal tolerances (mainly the positioning of the excitation windings in relation to the magnetizable rotor poles) can by no means be guaranteed because there is no time and in the assembly plant for washing machines no tools are available to meet these tolerances.

Der Erfindung liegt die Aufgabe zugrunde, die eingangs definierte Antriebsvorrichtung so zu gestalten, daß der Motor fertig vormontiert und geprüft beim Herstellerwerk für Waschmaschinen angeliefert werden kann, ohne daß beim Einbau des Motors an der Waschmaschine noch ein Eingriff nötig ist, der die Einhaltung der für den ordnungsgemäßen Betrieb des Motors erforderlichen Toleranzen gefährden könnte. Außerdem soll damit eine Montagevereinfachung im Waschmaschinenwerk einhergehen.The invention has for its object the drive device defined at the outset to be designed so that the engine is pre-assembled and tested by the manufacturer for Washing machines can be delivered without having to install the motor on the Washing machine still requires an intervention that ensures compliance with the proper Operation of the engine could endanger the required tolerances. It is also said to simplify assembly in the washing machine plant.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß das Ständertragteil und der Läufer des Motors für die Dauer seines Transports bis zur endgültigen Montage an der Bodenwand des Laugenbehälters in einer der Betriebsposition entsprechenden relativen Lage des Ständertragteils zum Läufer miteinander lösbar verbunden sind. Auf diese Weise kann sicher gestellt werden, daß der Motor im dafür bestens ausgerüsteten Herstellerwerk fertig montiert und geprüft werden kann, ehe er einem Anwender, z.B. das Werk eines Waschmaschinenherstellers, geliefert wird.According to the invention this object is achieved in that the stator support part and the rotor of the engine for the duration of its transportation until the final assembly on the bottom wall of the tub in a position corresponding to the operating position relative position of the stator support part releasably connected to each other are. In this way it can be ensured that the engine is in the best possible condition equipped manufacturing plant can be fully assembled and checked before it Users, e.g. the factory of a washing machine manufacturer.

Zur Realisierung der erfindungsgemäßen Maßnahme ist es von besonderem Vorteil, wenn das Ständertragteil und der Läufer identische Lochbilder aufweisen und mindestens eine Bohrung des Lochbildes im Ständertragteil mit einem Gewinde für eine vom Läufer aus eingeschraubte Arretierungsschraube ausgestattet ist. Zur Sicherheit wird man mindestens zwei solcher Arretierungsschrauben vorsehen.To implement the measure according to the invention, it is particularly advantageous if the stator support part and the rotor have identical hole patterns and at least a hole in the hole pattern in the stand support with a thread for one locking screw screwed in from the rotor. For safety you will provide at least two such locking screws.

In einer weiteren vorteilhaften Ausbildungsform der Erfindung ist aber anstelle mindestens einer von mehreren Arretierungsschrauben mindestens eine der Bohrungen des Lochbildes im Ständertragteil mit demselben Durchmesser wie die des Läufers und glattwandig ausgebildet und zur Lagesicherung während des Transports mit einem Arretierstift versehen.In a further advantageous embodiment of the invention, however, instead of at least one of several locking screws at least one of the holes of the hole pattern in the stator support part with the same diameter as that of the rotor and smooth-walled and to secure the position during transport with a Provide locking pin.

Zur erleichterten Montage eines gemäß der Erfindung vormontierten Motors ist eine besonders vorteilhafte Weiterbildung der Erfindung dadurch gekennzeichnet, daß der Läufer die Form einer Glocke hat, deren zentrischer Teil als flache Scheibe ausgebildet ist und auf einem Kreis mit demselben Radius Zugangsbohrungen wie das Ständertragteil Befestigungsbohrungen und wie der Tragstern Gewindelöcher für die Montage des Motors am Tragstern hat. To facilitate assembly of a motor pre-assembled according to the invention is a particularly advantageous development of the invention, characterized in that the Runner has the shape of a bell, the central part of which is designed as a flat disk and access holes on a circle with the same radius as that Stand support part mounting holes and like the support star threaded holes for the Assembly of the motor on the support star.

Zur Einsparung eines besonderen Ständertragteils kann die erfindungsgemäße Antriebsvorrichtung in der Weise vorteilhaft weitergebildet werden, daß das Ständertragteil durch einen Blechpaketring für die Erregerwicklungen gebildet ist.The drive device according to the invention can be used to save a special stator support part are advantageously further developed in such a way that the stator support part is formed by a laminated core for the field windings.

Bei einer vorstehend ausgeführten Vorrichtung kann zum besseren Schutz der Erregerwicklungen und der magnetisierbaren Pole in besonders vorteilhafter Weise der Blechpaketring auf der dem Tragstern zugewandten Seite mit einem tellerartig geformten Ring versehen sein, dessen Außenrand über eine Labyrinthdichtung an den Glockenrand reicht.In a device described above, the excitation windings can be better protected and the magnetizable poles in a particularly advantageous manner Laminated core on the side facing the support star with a plate-shaped Be provided ring, the outer edge of a labyrinth seal to the Bell edge is enough.

Beide vorgenannten Ausführungsformen haben außerdem den Vorteil, daß für die Arretierungsschrauben und -stifte keine anderen Löcher in der Läuferglocke vorhanden sein müssen als die für die Befestigung des Motors am Tragstern. Zur Montage des Motors an der Waschmaschine wird zunächst der arretierte Motor über seine Läuferglocke mit dem Wellenzapfen der Wäschetrommel verbunden. Dann wird ein Arretierstift oder eine der Arretierschrauben heraus gezogen und die zum Tragstern lochüberdeckende Drehposition des Motors gesucht und in das eine freigewordene Loch eine Montageschraube eingedreht. Danach wird der Reihe nach mit allen Löchern so verfahren.Both of the aforementioned embodiments also have the advantage that for the locking screws There are no other holes in the rotor bell must be than that for attaching the motor to the support star. To assemble the Motors on the washing machine is first the locked motor over his Runner bell connected to the shaft journal of the laundry drum. Then one Pull out the locking pin or one of the locking screws and the to the star sought overlapping rotational position of the motor and in the one that has become free Screwed in a mounting screw. After that, with all the holes in order do so.

Im übrigen ist die erfindungsgemäße Antriebsvorrichtung vorteilhafterweise am besten dadurch geschützt, daß das Ständertragteil sich über die Erregerwicklungen hinaus erstreckt und sein Rand zusammen mit dem der Glocke eine Labyrinthdichtung bildet.Otherwise, the drive device according to the invention is advantageously the best protected by the fact that the stator support part extends over the field windings extends beyond and its edge together with that of the bell a labyrinth seal forms.

Desgleichen können die Erregerwicklungen und Pole auch in Richtung auf das Drehzentrum hin besser durch eine Fortbildung der Erfindung geschützt werden, in der das Ständertragteil und/oder die Glocke auf der dem Zwischenraum zugewandten Seite mit einem umlaufenden Kragen versehen ist, der mit dem Gegenpart an der Glocke bzw. am Ständertragteil eine Labyrinthdichtung bildet.Likewise, the field windings and poles can also be towards the center of rotation be better protected by a further development of the invention in which the stand supporting part and / or the bell on the one facing the space Side is provided with a circumferential collar, which with the counterpart on the Bell or on the stand support part forms a labyrinth seal.

Eine andere besonders vorteilhafte Fortbildung der Erfindung ist dadurch gekennzeichnet, daß das Ständertragteil eine zentrische Führungshülse aufweist, die über eine definierte Schiebesitz-Passung auf einen Außenzylinder der Lagerhülse des Tragsterns setzbar ist. Diese Ausbildung erleichtert die Montage des Motors an der Waschmaschine dadurch, daß der noch arretierte Motor mit seiner Führungshülse lagesicher auf die Lagerhülse aufgesetzt werden kann, so daß die zentrische Bohrung für die Befestigung der Läuferglocke am Wellenzapfen automatisch zentriert ist.Another particularly advantageous development of the invention is characterized in that that the stand supporting part has a central guide sleeve, which a defined sliding fit on an outer cylinder of the bearing sleeve Tragsterns is settable. This training facilitates the assembly of the engine on the Washing machine in that the still locked motor with its guide sleeve can be placed securely on the bearing sleeve so that the central bore is automatically centered for attaching the rotor bell to the shaft journal.

Ein besonderer Vorteil ergibt sich durch eine weitere Fortbildung der erfindungsgemäßen Waschmaschine dadurch, daß die Führungshülse auf ihrer Außenseite eine Zylinderpassung mit einem auf der dem Zwischenraum zugewandten Seite des Läufers angebrachten Kragen hat, der in Transportposition auf der Außenzylinder-Passung sitzt. Dann kann nämlich der Kragen des Läufers zusammen mit dem Außenzylinder der Führungshülse bereits das Ständertragteil und den Läufer in Transportposition halten.A particular advantage results from a further development of the invention Washing machine in that the guide sleeve on its outside Cylinder fit with one on the side of the rotor facing the space attached collar, which in the transport position on the outer cylinder fit sitting. Then the collar of the runner can be together with the outer cylinder the support sleeve and the rotor in the transport position hold.

Diese Maßnahme wird noch verbessert, wenn die Arretierschrauben in Transportposition in Gewindebohrungen der Stirnfläche der Führungshülse dringen.This measure is further improved when the locking screws are in the transport position penetrate into threaded holes in the end face of the guide sleeve.

Anhand von in der Zeichnung dargestellten Ausführungsbeispielen ist die Erfindung nachstehend erläutert. Die senkrechten Schnitte durch die rückwärtige Partie einer Antriebsvorrichtung gemäß der Erfindung zeigen in

Fig.1
eine Version, bei der das Ständertragteil und der Läufer massiv ausgebildet sind, am Tragstern montiert,
Fig.2
die Version gemäß Fig. 1 vor der Montage am Tragstern,
Fig. 3
eine andere Version, bei der der Ring der Erregerwicklungs-Bleche zugleich das Ständertragteil bildet, am Tragstern bereits montiert,
Fig. 4
die Version gemäß Fig. 3 vor der Montage am Tragstern und
Fig. 5
eine dritte Version mit Führungshülse am Ständertragteil, an der der Kragen des Läufers bereits die Transportposition sichert.
The invention is explained below on the basis of exemplary embodiments shown in the drawing. The vertical sections through the rear part of a drive device according to the invention show in
Fig.1
a version in which the stator support part and the rotor are solidly mounted on the support star,
Fig.2
1 before mounting on the support star,
Fig. 3
another version, in which the ring of the excitation winding sheets also forms the stator support part, already mounted on the support star,
Fig. 4
the version of FIG. 3 before mounting on the support star and
Fig. 5
a third version with a guide sleeve on the stand support, on which the runner's collar already secures the transport position.

Der Tragstern 1 ist dreistrahlig. Sein nach oben gerichteter Strahl 2 liegt in der Zeichnungsebene der Fig. 1, 3 und 5. Die beiden nach unten gerichteten Strahlen zeigen nach hinten bzw. nach vorn aus der Zeichnungsebene hinaus und sind deshalb nicht dargestellt. Gemäß Fig. 1 ist der Tragstern 1 mittels nicht dargestellter Schrauben an der rückseitigen Bodenwand 3 des Laugenbehälters befestigt. Zur Lagerung des Wellenzapfens 4 der nicht dargestellten Wäschetrommel besitzt der Tragstern. 1 eine Lagerhülse 5 mit Wälzlagern. Außerdem erstreckt sich in Fig. 1 und 3 in derselben Richtung vom Tragstern 1 ausgehend ein Befestigungsflansch 6, an dem der Motor 7 verschraubt werden kann.The support star 1 has three beams. Its upward beam 2 lies in the plane of the drawing 1, 3 and 5. The two downward rays show backwards or forwards out of the drawing level and are therefore not shown. 1, the support star 1 is on by means of screws, not shown attached to the rear bottom wall 3 of the tub. For storing the The shaft star 4 of the laundry drum, not shown, has the support star. 1 one Bearing sleeve 5 with roller bearings. Also extends in Figs. 1 and 3 in the same Starting from the support star 1, a mounting flange 6 on which the motor 7th can be screwed.

Der in Fig. 1 und 2 dargestellte Motor 7 hat ein tellerförmig gestaltetes Ständertragteil 8, dessen Außenrand 9 sich bis zum Rand der Läuferglocke 10 erstreckt und mit ihm zusammen eine Labyrinthdichtung 11 bildet. Auf dem auskragenden Abschnitt 12 des Ständertragteils 8 sind die Erregerwicklungen 13 mit ihren Blechlamellen 14 am Umfang verteilt. Sie stehen über einen Luftspalt den magnetisierbaren Polen 15 gegenüber, die am Innenumfang des Glockenrandes 16 des Läufers 10 befestigt sind.The motor 7 shown in Fig. 1 and 2 has a plate-shaped stator support part 8, whose outer edge 9 extends to the edge of the rotor bell 10 and with it together forms a labyrinth seal 11. On the projecting section 12 of the Stator support part 8 are the excitation windings 13 with their laminations 14 on Scope distributed. They stand over an air gap to the magnetizable poles 15 opposite, attached to the inner circumference of the bell rim 16 of the rotor 10 are.

Das Ständertragteil 8 hat auf seiner zum Läufer 10 zeigenden Fläche einen Ring von Arretierungsaugen 17, die bis kurz vor die Innenfläche der Läuferglocke 10 reichen. Ihre Arretierungslöcher 18 sind glattwandig oder wie bei 19 mit Gewinde versehen. In die glattwandigen Arretierungslöcher 18 sind zum Transport Arretierungsstifte 20 gesteckt, die mit entsprechenden Arretierungslöchern 21 in der Läuferglocke 10 korrespondieren. Mindestens eines - besser zwei oder mehr - der Arretierungsaugen 17 hat Gewindelöcher 19 zum Einschrauben von Arretierungsschrauben 22, mit denen die Transportposition unverrückbar festgelegt werden kann. Zur genauen Tiefenpositionierung unter Wahrung des nötigen Abstandes der Läuferglocke 10 vom Ständertragteil 8 ist vor dem Einschrauben der Arretierungschrauben 22 eine Distanzhülse 23 einzusetzen.The stator support part 8 has a ring on its surface facing the rotor 10 Locking eyes 17 which extend to just before the inner surface of the rotor bell 10. Your locking holes 18 are smooth-walled or threaded as at 19. In the smooth-walled locking holes 18 are locking pins 20 for transport inserted, which correspond to corresponding locking holes 21 in the rotor bell 10. At least one - better two or more - of the locking eyes 17 has threaded holes 19 for screwing in locking screws 22 with which the transport position can be fixed immovably. For precise depth positioning while maintaining the necessary distance of the bell 10 from Stand support part 8 is a spacer sleeve before screwing in the locking screws 22 23 to use.

Bei der Montage des Motors 7 im Heimatwerk wird also nach dem Komplettieren des Ständertragteils 8 mit den Blechpaketen 14 und Wicklungen 13 und nach dem Komplettieren des Läufers 10 mit den magnetisierbaren Polen 15 die Läuferglocke flach auf das Ständertragteil gelegt und die Arretierposition gesucht. Gegebenenfalls wird diese Position nun schon mit den Arretierstiften 20 an den glattwandigen Löchern 18 gesichert. Dann werden die Distanzhülsen 23 in diejenigen Löcher der Läuferglocke gesteckt, deren korrespondierende Gewindelöcher 19 unter ihnen liegen. Schließlich werden Arretierschrauben 22 in die Distanzhülsen 23 geführt und in den Gewindelöchern 19 verschraubt. Damit ist der Motor bereit zur Prüfung und zur Lieferung.When assembling the engine 7 in the home plant is so after completing the Stand support part 8 with the laminated cores 14 and windings 13 and after Completing the rotor 10 with the magnetizable poles 15 the rotor bell placed flat on the stand support and the locking position sought. Possibly this position is now with the locking pins 20 on the smooth-walled holes 18 secured. Then the spacers 23 in those holes of the Runner bell inserted, the corresponding threaded holes 19 are below them. Finally, locking screws 22 are guided into the spacer sleeves 23 and in screwed the threaded holes 19. The engine is now ready for testing and Delivery.

Im Herstellerwerk für Waschmaschinen wird die Läuferglocke dieses Motors 7 an den Gewindestumpf 24 des Wellenzapfens 4 angesetzt, aufgeschraubt und auf nicht dargestellte Weise mittels einer Schraube in der Position gesichert, in der das Ständertragteil 8 auf den Befestigungsaugen 6 des Tragsterns 1 anliegt. Dann werden die Befestigungslöcher 25 im Ständertragteil 8 mit den Befestigungsaugen 6 zur Deckung gebracht und Befestigungsschrauben 26 eingedreht. Als Zugang zu den Befestigungsschrauben 26 dienen die Bearbeitungsöffnungen 27 in der Läuferglocke 10. Danach werden Arretierstifte 20 und Arretierschrauben 22 ausgedreht und die Distanzhülsen 23 entnommen. Arretierstifte 20 und -schrauben 22 sowie die Distanzhülsen 23 können als Rücklaufteile an das Motorenwerk zurückgesandt werden.In the manufacturing plant for washing machines, the rotor bell of this motor 7 is attached to the Threaded stub 24 of the shaft journal 4 is attached, screwed on and not illustrated manner secured by means of a screw in the position in which the stand supporting part 8 rests on the attachment eyes 6 of the star 1. Then they will Fastening holes 25 in the stand support part 8 with the fastening eyes 6 for covering brought and screws 26 screwed. As access to the Fastening screws 26 serve the machining openings 27 in the rotor bell 10. Then locking pins 20 and locking screws 22 are unscrewed and the Distance sleeves 23 removed. Locking pins 20 and screws 22 and the spacer sleeves 23 can be returned to the engine plant as return parts.

Der Grundaufbau des Motors gemäß Fig. 3 und 4 und seiner Verbindung mit dem Tragstern ähnelt dem der Fig. 1 und 2. Das Ständertragteil 8 gemäß Fig.1 und 2 entfällt bzw. wird vom Blechpaket 28 gebildet, das aus einzelnen ringförmigen Blechlamellen zusammensetzt ist. Das Blechpaket erstreckt sich auch weiter ins Drehzentrum hinein als das Blechpaket 14 des Motors 7 in Fig. 1 und 2, weil auf einem dem Drehzentrum näher liegenden Kreis das Blechpaket mit Befestigungslöchern 29 versehen ist, mittels denen der Motor 30 auf den Befestigungsaugen 31 des Tragsterns 1 durch Befestigungsschrauben 26 montiert werden kann. Zwischen dem Blechpaket 28 und dem Tragstern 1 ist am Blechpaket außerdem noch ein tellerförmiger Ring 32 angebracht, der ebenfalls aus Blech oder aus Kunststoff bestehen kann. Er dient als Schutz vor dem Eindringen von Staub, der vor allem als magnetisierbarer Staub den ordnungsgemäßen Betrieb des Motors 30 erheblich beeinträchtigen kann. Dazu bildet der Ring 32 zusammen mit dem Rand 16 der Läuferglocke 10 eine labyrinthartige Dichtung 11. Auf der Innenseite des Ringraumes für die Erregerwicklungen 13 und die Pole 15 wird eine solche Labyrinthdichtung 33 von einer Innenkante des Blechpaketes 28 zusammen mit einem umlaufenden Kragen 34 an der Innenseite der Läuferglocke 10 gebildet.The basic structure of the engine according to FIGS. 3 and 4 and its connection with the The supporting star is similar to that of FIGS. 1 and 2. The stand supporting part 8 according to FIGS. 1 and 2 is eliminated or is formed by the laminated core 28, which consists of individual annular laminations is composed. The laminated core also extends further into the turning center into it as the laminated core 14 of the motor 7 in Fig. 1 and 2, because on one Provide the lamination stack with fastening holes 29 in the circle closer to the center of rotation by means of which the motor 30 on the mounting eyes 31 of the star 1 can be mounted by fastening screws 26. Between the laminated core 28 and the support star 1 is also a plate-shaped ring 32 on the laminated core attached, which can also consist of sheet metal or plastic. It serves as Protection against the ingress of dust, which is mainly as the magnetizable dust proper operation of the engine 30 can significantly affect. To do this the ring 32 together with the edge 16 of the bell 10 a labyrinthine Seal 11. On the inside of the annulus for the excitation windings 13 and the pole 15 is such a labyrinth seal 33 from an inner edge of the Laminated core 28 together with a circumferential collar 34 on the inside of the Runner bell 10 formed.

Die Befestigungslöcher 29 dienen nicht nur zur Befestigung des Motors 30 am Tragstern 1 sondern auch zur Festlegung der Motorenteile (Ständer und Läufer) zueinander vor dem Einbau des Motors 30. Dazu sind die Befestigungslöcher 29 oder ein Teil von ihnen mit Innengewinde versehen. Sein Kerndurchmesser ist dabei mindestens so groß wie der Nenndurchmesser der Befestigungsschrauben 26. Der Nenndurchmesser des Innengewindes entspricht aber genau dem von Arretierschrauben 35, mit denen die Motorenteile festgelegt werden. Dazu sind ferner in die Bearbeitungsöffnungen 36 für den Zugang zu den Befestigungsschrauben 26 Distanzhülsen 37 eingesetzt, die zwischen der Läuferglocke 10 und dem Blechpaket 28 einen definierten Abstand halten, wenn die Arretierschrauben 35 in das Gewinde der Befestigungslöcher 29 eingeschraubt sind. Anstelle dieser Maßabhängigkeiten zwischen den Durchmessern der Befestiguriglöcher und den jeweiligen Schrauben, können ein Teil der Löcher dieses Kreises ausschließlich als Befestigungslöcher 29 und ein anderer Teil als Arretierlöcher dienen. Diese beiden Arten von Löchern können zur leichteren Unterscheidung auch auf Kreisen mit unterschiedlichen Radien liegen. Dann können die Löcher in der Läuferglocke 10 auch unterschiedliche Durchmesser aufweisen, z.B. die Bearbeitungslöcher 36 einen größeren Durchmesser als die für die Distanzhülsen 37 vorgesehene Löcher.The mounting holes 29 are not only used to attach the motor 30 to the support star 1 but also to fix the motor parts (stator and rotor) to each other before installing the engine 30. For this purpose, the mounting holes 29 or a part provided with an internal thread by them. His core diameter is at least as large as the nominal diameter of the fastening screws 26. The nominal diameter the internal thread corresponds exactly to that of locking screws 35, with which the engine parts are fixed. These are also in the processing openings 36 for access to the fastening screws 26 spacers 37 used that defined a between the rotor bell 10 and the laminated core 28 Keep distance when the locking screws 35 in the thread of the mounting holes 29 are screwed in. Instead of these dimensional dependencies between the Diameters of the mounting holes and the respective screws can be part the holes of this circle exclusively as mounting holes 29 and another Part serve as locking holes. These two types of holes can be easier Differentiation also lie on circles with different radii. Then can the holes in the rotor bell 10 also have different diameters, e.g. the machining holes 36 have a larger diameter than that for the Spacers 37 provided holes.

Der Einbau des Motors 30 im Herstellerwerk für Waschmaschinen gestaltet sich ähnlich einfach wie beim Beispiel der Fig. 1 und 2. Die Läuferglocke 10 wird zunächst auf den Gewindestumpf 24 aufgeschraubt, bis die Außenfläche des Rings 32 auf den Befestigungsaugen 31 zur Anlage kommt. Dann wird diese Position im Verhältnis zum Wellenzapfen 4 gesichert (Schraube o.ä.). Falls die Befestigungslöcher von den Arretierlöchern verschieden sind, werden nun erst die Befestigungsschrauben 26 durch die Bearbeitungslöcher 36 hindurch in die Befestigungsaugen 31 gedreht. Dann werden die Arretierschrauben 36 und die Distanzhülsen 37 entfernt und an den Hersteller des Motors zurückgegeben. Falls die Befestigungslöcher und die Arretierlöcher gleich gestaltet sind, werden nur einige, z.B. drei; der Löcher zur Arretierung mittels der Distanzhülsen 37 und der Arretierschrauben 35 benutzt sein. Dann kann ebenso verfahren werden wie vorstehend. Sind allerdings alle dieser Löcher, z.B. mehr als drei, zur Arretierung benutzt worden, dann muß man bei der Montage schrittweise vorgehen, d.h. zuerst wird eine Arretierschraube 35 und die zugeordnete Distanzhülse 37 entfernt und dort eine Befestigungsschraube 26 eingeführt und festgeschraubt. Dann geht man mit den übrigen Löchern schrittweise gleichermaßen vor.The installation of the motor 30 in the manufacturing plant for washing machines is similar simple as in the example of FIGS. 1 and 2. The rotor bell 10 is first on screwed the threaded stub 24 until the outer surface of the ring 32 on the Attachment eyes 31 comes to rest. Then this position is in proportion secured to the shaft journal 4 (screw or similar). If the mounting holes from the Locking holes are different, only the fastening screws 26 rotated through the processing holes 36 into the mounting eyes 31. Then the locking screws 36 and the spacer sleeves 37 are removed and sent to the manufacturer of the engine returned. If the mounting holes and the locking holes are designed the same, only some, e.g. three; the holes for locking by means of the spacer sleeves 37 and the locking screws 35 can be used. Then you can too proceed as above. However, are all of these holes, e.g. more than three, used for locking, then you have to step by step during assembly proceed, i.e. first a locking screw 35 and the associated one Removed spacer sleeve 37 and inserted a fastening screw 26 and screwed there. Then proceed step by step in the same way with the remaining holes.

Bei dem in Fig. 5 dargestellten Beispiel für den Motor 58 ist das Ständertragteil 38 auf einem umlaufenden Kragen 39 ebenfalls mit Erregerwicklungen 40 und Blechpaketen bestückt, die über einen Luftspalt magnetisierbaren Polen 41 gegenüberstehen.
Diese Pole sind in gleicher Weise wie in den vorstehend beschriebenen Beispielen am Innenumfang des Randes 42 einer Läuferglocke 43 befestigt, die mit Bearbeitungslöchern 44 für Befestigungsschrauben 45 versehen ist. Als Labyrinthdichtung 46 dient der durch den übergreifende Flansch 47 des Ständertragteils 38 entstehende Bereich. Auf der Innenseite erübrigt sich eine besondere Dichtung weil dieser Bereich durch die beschriebene Konstruktion ohnehin staubdicht ist.In the example of the motor 58 shown in FIG. 5, the stator support part 38 on a circumferential collar 39 is also equipped with excitation windings 40 and laminated cores which face poles 41 that can be magnetized via an air gap.
These poles are fastened in the same way as in the examples described above on the inner circumference of the edge 42 of a rotor bell 43 which is provided with machining holes 44 for fastening screws 45. The area created by the overlapping flange 47 of the stator support part 38 serves as the labyrinth seal 46. There is no need for a special seal on the inside because this area is already dustproof due to the construction described.

Das Ständertragteil 38 hat eine zentrische Führungshülse 48, deren Außenzylinderfläche 49 zusammen mit der kurzen Innenzylinderfläche 50 eines Ringwulstes 51 an der Läuferglocke 43 eine Schiebesitz-Passung (z.B. H7/j6) bildet, die zur Positionssicherung der Motorenteile während des Transports dient. In dieser Sicherungsposition sind die Motorenteile mit Transportsicherungsschrauben 52 festgelegt und sitzen mit ihren Stirnflächen aneinander. Das Blechpaket der Erregerwicklungen 40 ist dabei gegenüber den Polen 41 um beispielsweise 6 bis 7 mm nach innen versetzt.The stand support member 38 has a central guide sleeve 48, the outer cylindrical surface 49 together with the short inner cylindrical surface 50 of an annular bead 51 the rotor bell 43 forms a sliding fit (e.g. H7 / j6), which is used to secure the position the engine parts are used during transportation. In this securing position the engine parts are fixed with transport locking screws 52 and sit with their faces together. The laminated core of the field windings 40 is included offset inward from the poles 41, for example by 6 to 7 mm.

Die Führungshülse 48 bildet mit ihrer Innenzylinderfläche gegenüber der Außenzylinderfläche der Lagerhülse 5 ebenfalls eine Schiebesitz-Passung (z.B. ebenfalls H7/j6). Zur Montage werden die Führungshülse 48 auf die Lagerhülse 5 geschoben und Läuferglocke 43 mit ihrem zentrischen Loch in die Kerbverzahnung des Wellenstumpfes 53 geführt. Die zentrische Wellenschraube 54 wird leicht angezogen, und die Transportsicherungsschrauben 52 werden ausgedreht. Nachdem die Befestigungsschrauben 45 fest angezogen sind, kann auch die Wellenschraube festgezogen werden. Für die richtige maßliche Abstimmung der Motorenteile zueinander im eingebauten Zustand sorgen die Distanzscheibe 55 zwischen Ständertragteil 38 und Tragstern 1 einerseits und die Distanzscheibe 56 zwischen Läuferglocke 43 und einem Absatz 57 am Wellenzapfen 4. The guide sleeve 48 forms with its inner cylindrical surface opposite the outer cylindrical surface the bearing sleeve 5 also has a sliding fit (e.g. also H7 / j6). For assembly, the guide sleeve 48 is pushed onto the bearing sleeve 5 and rotor bell 43 with its central hole in the serration of the stub shaft 53 led. The central shaft screw 54 is slightly tightened, and the transport locking screws 52 are unscrewed. After the mounting screws 45 are tightened, the shaft screw can also be tightened become. For the correct dimensional matching of the engine parts to each other in the installed condition provide the spacer 55 between the stand support member 38 and Support star 1 on the one hand and the spacer 56 between the rotor bell 43 and one Paragraph 57 on the shaft journal 4.

Alle vorgestellten Beispiel der erfindungsgemäßen Antriebsvorrichtung haben noch einen wesentlichen Vorteil gemeinsam: Gegenüber bisherigen bekannten Vorschlägen kommen sie mit weniger bzw. kleineren Wälzlagern für den Wellenzapfen 4 aus.All presented examples of the drive device according to the invention still have One major advantage in common: compared to previous known proposals they get by with fewer or smaller roller bearings for the shaft journal 4.

Claims (11)

  1. Drive device for a washing machine with a laundry drum mounted by way of an at least approximately horizontally disposed shaft (4) within a bearing sleeve (5) of a rigid support spider (1) mounted at a base wall (3) of a washing solution container, wherein the drive device can be mounted at the rear side of the washing solution container and consists of a flat motor (7) with a stator support part (8) and field windings (13) and with a rotor (10) and magnetisable poles (15) and drives the laundry drum directly, characterised in that the stator support part (8, 28, 38) and the rotor (10, 43) of the motor (7, 30) are detachably connected together, for the duration of its transport until final mounting at the base wall (3) of the washing solution container, in a relative position of the stator support part (8, 28, 38) and the rotor (10, 43) corresponding to the operational position.
  2. Drive device according to claim 1, characterised in that the stator support part (8, 28) and the rotor (10) have identical hole patterns and at least one bore (19, 29) of the hole pattern in the stator support part (8, 28) is furnished with a thread for a locking screw (22, 35) screwed in from the rotor (10.
  3. Drive device according to claim 2, characterised in that at least one (18, 29) of the bores of the hole pattern in the stator support part (8, 28) is formed to be smooth walled and to have the same diameter as that of the rotor (10) and is provided with a locking pin (20) for the positional securing during transport.
  4. Drive device according to one of claims 1 to 3, characterised in that the rotor (10, 43) has the form of a bell, the centre part of which is formed as a flat disc and has access bores (27, 36, 44) on a circle with the same radius as the stator support part (8, 28, 38) fastening bores and as the support spider (1) threaded holes for the mounting of the motor (7, 30, 58) at the support spider (1).
  5. Drive device according to one of claims 1 to 4, characterised in that the stator support part is formed by a laminated stack ring (28) for the field windings (13).
  6. Drive device according to claim 5, characterised in that the laminated stack ring (28) is provided on the side facing the support spider (1) with a ring (32) which is formed to be plate-shaped and the outer edge of which extends by way of a labyrinth seal (11) to the bell edge (16).
  7. Drive device according to one of claims 1 to 4, characterised in that the stator support part (8, 38) extends beyond the field windings (13, 40) and its edge (9, 47) forms together with the bell (16, 42) a labyrinth seal (11, 46).
  8. Drive device according to claim 7, characterised in that the stator support part (8, 28) and/or the bell (10) is or are provided on the side facing the intermediate space with an encircling collar (17, 34) which forms together with the counterpart at the bell (10) or at the stator support part (8, 28) a labyrinth seal (33).
  9. Drive device according to one of claims 2 to 8, characterised in that the stator support part (38) has a central guide sleeve (48) which can be placed by way of a defined push seat fit onto an outer cylinder of the bearing sleeve (5) of the support spider (1).
  10. Drive device according to claim 1, characterised in that the guide sleeve (48) has on its outer side (49) a cylinder fit with the inner side (50) of a bead (51) which is formed on the side of the rotor (43) facing the intermediate space and which, in transport position, seats on the outer cylinder fit.
  11. Drive device according to claim 10, characterised in that the locking screws (52) penetrate into threaded bores of the end face of the guide sleeve (48) in transport position.
EP98929430A 1997-06-20 1998-06-08 Drive unit for a washing machine Expired - Lifetime EP0991805B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19726246 1997-06-20
DE19726246A DE19726246A1 (en) 1997-06-20 1997-06-20 Drive device for a washing machine
PCT/EP1998/003422 WO1998059102A1 (en) 1997-06-20 1998-06-08 Drive unit for a washing machine

Publications (3)

Publication Number Publication Date
EP0991805A1 EP0991805A1 (en) 2000-04-12
EP0991805B1 true EP0991805B1 (en) 2002-01-16
EP0991805B2 EP0991805B2 (en) 2007-01-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98929430A Expired - Lifetime EP0991805B2 (en) 1997-06-20 1998-06-08 Drive unit for a washing machine

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US (1) US6131422A (en)
EP (1) EP0991805B2 (en)
DE (2) DE19726246A1 (en)
ES (1) ES2172155T5 (en)
TR (1) TR199903158T2 (en)
WO (1) WO1998059102A1 (en)

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Also Published As

Publication number Publication date
DE19726246A1 (en) 1998-12-24
EP0991805B2 (en) 2007-01-03
ES2172155T5 (en) 2007-08-16
WO1998059102A1 (en) 1998-12-30
DE59802647D1 (en) 2002-02-21
EP0991805A1 (en) 2000-04-12
TR199903158T2 (en) 2001-03-21
US6131422A (en) 2000-10-17
ES2172155T3 (en) 2002-09-16

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