EP2016651A1 - Rotor a collecteur d'une machine electrique ainsi que procede pour sa fabrication - Google Patents

Rotor a collecteur d'une machine electrique ainsi que procede pour sa fabrication

Info

Publication number
EP2016651A1
EP2016651A1 EP07724253A EP07724253A EP2016651A1 EP 2016651 A1 EP2016651 A1 EP 2016651A1 EP 07724253 A EP07724253 A EP 07724253A EP 07724253 A EP07724253 A EP 07724253A EP 2016651 A1 EP2016651 A1 EP 2016651A1
Authority
EP
European Patent Office
Prior art keywords
rotor
segments
winding
commutation
rotor winding
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.)
Withdrawn
Application number
EP07724253A
Other languages
German (de)
English (en)
Inventor
Ludvik Kumar
Marjan Drmota
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.)
Kolektor Group doo
Original Assignee
Kolektor Group doo
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 Kolektor Group doo filed Critical Kolektor Group doo
Publication of EP2016651A1 publication Critical patent/EP2016651A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/04—Connections between commutator segments and windings
    • 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
    • Y10T29/49011—Commutator or slip ring assembly

Definitions

  • the present invention relates firstly to a method for producing a rotor of a dynamoelectric machine which has a rotor shaft, an armature core, a rotor winding made of insulated winding wire, and a commutation unit having a plurality of carbon segments arranged around the rotor axis. Furthermore, the present invention relates to a rotor of a dynamoelectric machine, comprising a rotor shaft, an armature stack placed thereon, a rotor winding made of insulated winding wire, and a commutation unit having segments made of carbon and arranged around the rotor axis, to which armatures the ends of the rotor winding are directly connected.
  • Dynamoelectric machines in particular direct current electric motors and generators, typically have a rotor which has a rotor shaft, an armature core, a rotor winding made of insulated winding wire, a plurality of coil-shaped individual windings, and a commutation unit with a plurality of segments arranged around the rotor axis.
  • the segments the number of which typically corresponds to the number of individual windings of the rotor winding, thereby defining a generally cylindrical or even brush running surface on which the brushes grind.
  • the segments of the commutation unit are made of copper.
  • the - anchored in an insulating support body - segments typically have connecting hooks, which the elek- trisch conductive connection of the rotor winding serve to the segments of the commutation.
  • a prefabricated commutator is mounted on the rotor shaft, and the ends of the rotor winding, ie, the ends of the individual windings of the rotor winding are welded to the connection hooks.
  • the segments of the commutation are increasingly made of carbon for life reasons, including here in the context of the present application, all known manufacturing methods of graphite or carbon segments (especially from electric charcoal or coal with polymer bond).
  • the present invention seeks to provide a method of manufacturing a practical rotor of a dynamoelectric machine as well as a type of practical rotor of a dynamoelectric machine set forth in its introduction by a special economy , Reliability and longevity and allows particularly compact external dimensions.
  • a rotor of a dynamoelectric machine comprising a rotor shaft, an armature package, a rotor coil made of insulated winding wire, a plurality of individual coil windings, and a carbon plurality commutating unit the rotor axis has arranged segments around, comprising the following steps:
  • a running according to the present invention rotor of the type specified is characterized by a patch on the rotor shaft, arranged axially between the armature core and the Kommut réellesaku insert made of insulating material, which has a number of segments of the Kommut réelleshim corresponding number of approaches, respectively arranged immediately adjacent to an end face portion of the segments of the commutation and at which the bare ends of the individual windings of the rotor winding are fixed by being wound around the associated approach around, wherein in the region of the end face portions of the segments of the commutation the wound around the approaches ends the single windings of the rotor winding under a fixed connection means of the adhesive are contacted directly electrically conductively with the respectively associated segment of the commutation unit.
  • a central feature of the present invention is that the electrically conductive connections between the ends of the individual windings of the rotor winding and the segments of the commutation unit are each made in one (in particular axial) end face portion of the segments of the commutation unit.
  • the ends of the rotor winding are fixed by wrapping the lugs such that they are at the axial Placing the commutation unit on the rotor shaft and / or the insert in the region of the (axial) end face sections of the segments of the commutation directly electrically conductively contacted with these, to produce a solid connection by means of an electrically conductive Adhesivs (solder, adhesive or the like.)
  • Metallic conductor segments as a conductive intermediate between the ends of the rotor winding and the carbon segments are therefore not provided according to the present invention.
  • the contacts of the ends of the rotor winding with the segments of the commutation unit which are particularly sensitive in the case of direct contact of the rotor winding with carbon segments, can be arranged relatively close to the axis of the rotor in application of the invention, so that Individual elements of the contacting act only comparatively low centrifugal forces. Furthermore, the contacts, which are generally limited to said face portions, can be accommodated in a protected manner and may even be encapsulated or encapsulated with plastic or molding material together with the anchor assembly and the rotor winding. Also with regard to the smallest possible dimensions of the rotor, the invention has an advantageous effect.
  • the advantages of the present invention are particularly pronounced; because after winding a single winding of the rotor winding of the winding wire needs only once or possibly several times to be wrapped around the approach of the insert before the winding of the adjacent single winding is started.
  • the removal of the insulation from the winding wire in the region of the ends of the rotor winding can take place, depending on the given characteristics, during the production of the rotor winding or subsequently.
  • the removal of the insulation during the manufacture of the rotor winding ie because between the winding of two successive individual windings has the advantage that the ends of the rotor winding can be largely freed from the insulation, which favors the production of a good contact with the carbon segments; However, in this case, the manufacture of the rotor winding correspondingly takes more time.
  • the removal of the insulation after completion of Wik- kelns the rotor winding leads to practical results and has the advantage that the production of the rotor winding is not delayed. This is particularly favorable from the standpoint of economy. In what way (mechanically, chemically, thermally or otherwise) the insulation of the winding wire takes place in the region of the ends of the rotor winding depends on the conditions of the individual case and depends, for example, on the type of insulation.
  • the ends of the rotor winding are wound around the lugs several times for their fixation on the lugs of the insert and / or drawn into notches provided on the lugs, in which the wire of the rotor winding clamps.
  • This provides a cost-effectively manufacturable reliable fixation of the ends of the rotor winding to the lugs of the insert.
  • said notches do not extend completely around the lugs, but rather only over those portions of lugs that are not immediately adjacent facing the preparation of the electrically conductive connection with the rotor winding end face portions of the segments of the commutation unit.
  • the ends of the rotor winding should expose as much as possible, in order to create optimum conditions for a permanent electrically conductive connection with the segments.
  • soldering e.g soldering
  • the segments of the commutation unit should be previously (partially) known as such. metallize superficially.
  • solder is applied as a paste prior to placement of the Kommut réellesbauteils on the lugs and the fixed there ends of the rotor winding and / or the end surface portions of the segments and heated the unit after mounting the Kommut réellesbauteils to a temperature above the softening temperature of the solder.
  • the commutation component to be mounted has a ring-shaped or sleeve-shaped component. comprises senförmigen carbon blank, wherein the individual segments of the commutation are separated from each other only after the production of the electrically conductive connections of the segments of the commutation with the rotor winding.
  • the commutation component merely consists of an annular or sleeve-shaped carbon blank which is placed on the insert and at least partially encapsulated with plastic, or molding material together with the insert, the armature core and the rotor winding before separation of the individual segments of the commutation unit is overmoulded.
  • the insert centering projections can ensure the correct position, aligned alignment of insert and carbon blank. If the rotor shaft - especially in Kommutleitersticianen with a flat brush surface - impede the separation of the individual segments of the commutation, they can be moved axially in case of need before the separation of the individual segments of the commutation. This is true not only when the rotor shaft on which the rotor is made is a pure assembly shaft, which is then replaced with an operating shaft.
  • the rotor shaft can be temporarily displaced axially in order to be able to separate the segments of the commutation unit that are initially connected to form a closed ring or a closed sleeve.
  • the design features shown above are by no means mandatory.
  • Other embodiments of the invention that are particularly advantageous for certain applications are distinguished by the fact that the commutation component to be mounted has an insulating carrier body and segments of the commutation unit which are already anchored and already isolated in the latter.
  • the commutation unit - with its insulating carrier ger stresses - be mounted on the rotor shaft itself.
  • the use does not necessarily involve a function centering the commutation component or the segments of the commutation unit, as is the case with a carrierless commutation component in the sense described above.
  • the carrier body of the commutation in this case has recesses or windows, which release the (axial) end face sections of the segments serving for the production of the electrically conductive connections between the ends of the rotor winding and the segments of the commutation unit. Since in application of the present invention, the ends of the rotor winding are not connected by a weld to the commutation, the carrier body of the commutation can be inexpensively made of thermoplastic material.
  • the insert has an outer contact surface for the rotor winding which widens conically in the direction of the commutation unit.
  • the insert can limit and define the space available for the manufacture of the rotor winding in this way and support the rotor winding, which is particularly favorable with regard to a particularly compact design. Insert, anchor package and rotor winding can form a compact, solid unit in this way, which can be handled in case of need even without a shaft.
  • FIG. 1 shows an axial section through a first embodiment of a rotor produced in accordance with the present invention of a DC electric motor with a flat brush surface
  • FIGS. 1 and 2 are frontal plan views of the rotor according to FIGS. 1 and 2,
  • Fig. 4 is a perspective view of the insert used for the manufacture of the rotor according to FIGS. 1 to 3 and
  • FIG. 5 shows the use of FIG. 4 from a different perspective.
  • Fig. 6 illustrates the sequence of manufacture of the rotor according to FIGS. 1 to 3 in several stages. Further shows
  • FIG. 7 shows an axial section through a second embodiment of a rotor of a direct-current brushed DC electric motor manufactured in accordance with the present invention
  • FIG. 8 is a perspective view of the commutation component used to make the rotor of FIG. 7.
  • FIG. 8 is a perspective view of the commutation component used to make the rotor of FIG. 7.
  • FIG. 9 shows the commutation component according to FIG. 8 from a different perspective
  • FIG. 10 is a perspective view of the insert used to make the rotor of FIG. 7;
  • 11 shows the insert according to FIG. 10 from a different perspective
  • 12 is a perspective view of the rotor blank prior to assembly of the Kommut istsbauteils and
  • FIG. 13 from another perspective, the rotor blank of FIG. 12 after assembly of the Kommut istsbauteils. Further shows
  • FIG. 14 shows a first axial section through a third embodiment of a rotor of a DC brushed cylindrical rotor made in accordance with the present invention
  • Fig. 15 shows another axial section through the rotor shown in Fig. 14 in another plane
  • FIGS. 14 and 15 shows a perspective view of the insert used for producing the rotor according to FIGS. 14 and 15 and the commutation component to be placed on it. Finally shows
  • Fig. 17 is an axial section through a fourth embodiment of a rotor manufactured in accordance with the present invention of a DC electric motor with a cylindrical brush surface and
  • Fig. 18 shows the rotor of Fig. 17 from a different perspective.
  • the rotor of a dynamoelectric machine illustrated in FIGS. 1 to 6 of the drawing comprises a rotor shaft 1, an armature core 2 mounted thereon, a rotor winding 3 applied to the armature core, and a commutating unit 4.
  • the commutating unit 4 comprises eight carbon-made ones Rotor axis 5 arranged around segments 6, which define a perpendicular to the rotor axis 5 arranged planar brush surface 7.
  • the rotor winding made of insulated winding wire accordingly comprises eight individual coil windings.
  • the illustrated rotor corresponds to the well-known prior art, so that it does not require further explanation.
  • an insert 9 consisting of insulating material 9 with a shaft bore 10 is placed on the rotor shaft 1.
  • the insert 9 rests with an end face 11 against the anchor packet 2. It has an outer contact surface 12 for the rotor winding 3, which widens conically in the direction of the commutation unit 4.
  • the insert 9 has eight projections 13 in the form of radially aligned arm-shaped projections which extend both radially outward over the armature Core 14 survive and compared to the core 14 axially offset in the direction of the segments 6 of the Kommut ist istsein- unit 4.
  • the lugs 13 experience an extension in the form of ribs 15 which project from the end face 18 of the core 14 of the insert 9.
  • the ribs 15 each have a contact surface 16 for the associated segment 6 of the commutation unit 4, wherein the eight contact surfaces 16 lie in a common plane parallel to the brush running surface 7.
  • the lugs 13 notches 19, whose inside diameter is matched to the diameter of the wire used to make the rotor winding, that the winding wire in the region of the ends 8 of the rotor winding several times wrapped around the lugs 13 and clamped in the notches 19 in which it is retracted.
  • the notches 19 are pronounced only in those regions of the projections 13 facing away from the segments 6 of the coring mutation unit 4.
  • the projections 13 have flat trough-shaped recesses 20 which are approximately the same size as the wire used to make the rotor winding back to the contact surfaces 16 and the recording serve several radially juxtaposed windings of the ends 8 of the rotor winding.
  • the segments 6 of the commutation unit 4 which are correspondingly profiled there, are bordered by plastic 22 in which the armature core 2 and the rotor winding 3 are also embedded.
  • the plastic 22 also encloses approaches 13 where not the segments 6 abut against them, and thus contributes in addition to fixing the ends 8 of the rotor winding 3 at the lugs 13 at.
  • Fig. 6 illustrates in step 6.3 the placement of the carbon washer 24 on the insert 9 to make the electrically conductive connections to the ends of the rotor winding in the manner explained above.
  • step 6.4 Connecting, as shown in step 6.4, the assembly of anchor packet 2, rotor winding 3, insert 9 and carbon ring disk 24 with plastic 22 around, wherein the plastic according to the survey of the ribs 15 on the core 14 of the insert 9 also at the bottom the segments 6 abuts and anchored the segments and only the brush surface 7 remains free.
  • the embodiment according to FIGS. 7 to 13 is distinguished from the above-described embodiment according to FIGS. 1 to 6 by the fact that the commutation component 27 to be mounted has an insulating support body 28 and segments 6 of the commutation unit, which are already anchored and already insulated therefrom 4 has.
  • the commutation component 27 is mounted directly on the rotor shaft 1, for which purpose the carrier body 28 has a shaft bore 29.
  • the carrier body of the commutation component has windows 30, which release axial end face sections 21 of the segments 6 of the commutation unit 4 and thus enable the production of electrically conductive connections between the ends of the rotor winding and the segments in the region of those axial end face sections 21.
  • the insert 31 to be mounted on the rotor shaft 1 is adapted for this purpose to the specific design of the commutation component 27.
  • the lugs 32 are designed such that they can enter the windows 30 of the carrier body 28 of the commutation component 27.
  • the aligned alignment of insert 31 and Kommut réellesbauteil 27 is supported by mutually corresponding mating surfaces 33, 34 of substantially conical shape.
  • FIGS. 14 to 16 illustrate a rotor constructed in accordance with the present invention, the commutation unit 4 of which has a cylindrical brush raceway 35.
  • the commutation component 37 to be mounted on the insert 36 in the course of production consists exclusively of a carbon sleeve 38, the inner peripheral surface of which is profiled meander-shaped for the formation of undercut anchor portions 39 for the segments 40.
  • For centering the carbon sleeve 38 on the insert 36 has this not only radially inwardly from the ribs 41 axially projecting centering projections 42, but also also centering nubs 43 which receive in pairs between them an anchor portion 39 and thus an exact angular orientation of the carbon sleeve 38 and Ensure insert 36 to each other.
  • the commutation component 47 to be mounted directly on the rotor shaft 1 has an insulating carrier body 48 and individual carbon segments 49 anchored therein.
  • the carrier body 48 has recesses 50 which release axial end surface portions 21 of the segments 49 in order to enable the production of electrically conductive connections between the ends 8 of the rotor winding 3 and the segments 49 in the region of those axial end surface portions 21.
  • the to be mounted on the rotor shaft 1 insert 51 is adapted for this purpose to the specific design of the Kommut réellesbauteils 47.
  • the lugs 52 are designed so that they can enter into the recesses 50 of the carrier body 48 of the commutation 47.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Windings For Motors And Generators (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Dc Machiner (AREA)

Abstract

Un rotor comporte un collecteur (4) en carbone. Pour fabriquer le rotor, un dispositif de retenue isolant (9) est monté sur l'arbre de rotor (1). Le dispositif de retenue (9) possède des éléments saillants (13), de manière à enrouler les extrémités d'enroulement (8) des bobines de rotor (3), après l'éloignement de l'isolation, les extrémités d'enroulement (8) sont pourvues d'une matière adhérente conductrice électriquement. Le collecteur (4) va alors se monter sur les éléments saillants (13) avec les extrémités d'enroulement (8). Par cette opération, les extrémités d'enroulement (8) sont directement reliées de façon mécanique et de façon électrique avec les segments de collecteur respectifs (6).
EP07724253A 2006-05-10 2007-04-14 Rotor a collecteur d'une machine electrique ainsi que procede pour sa fabrication Withdrawn EP2016651A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006021696.2A DE102006021696B4 (de) 2006-05-10 2006-05-10 Verfahren zur Herstellung eines Rotors einer dynamoelektrischen Maschine sowie Rotor einer dynamoelektrischen Maschine
PCT/EP2007/003315 WO2007128379A1 (fr) 2006-05-10 2007-04-14 Rotor à collecteur d'une machine électrique ainsi que procédé pour sa fabrication

Publications (1)

Publication Number Publication Date
EP2016651A1 true EP2016651A1 (fr) 2009-01-21

Family

ID=38217704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07724253A Withdrawn EP2016651A1 (fr) 2006-05-10 2007-04-14 Rotor a collecteur d'une machine electrique ainsi que procede pour sa fabrication

Country Status (10)

Country Link
US (1) US20090091209A1 (fr)
EP (1) EP2016651A1 (fr)
JP (1) JP2009536512A (fr)
CN (1) CN101490912B (fr)
BR (1) BRPI0711359A2 (fr)
DE (1) DE102006021696B4 (fr)
HK (1) HK1130954A1 (fr)
MX (1) MX2008014328A (fr)
RU (1) RU2008143454A (fr)
WO (1) WO2007128379A1 (fr)

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CN101676135B (zh) * 2008-09-19 2014-11-19 德昌电机(深圳)有限公司 汽车发动机冷却系统及其马达
DE102009057063A1 (de) 2009-12-04 2011-06-09 Kolektor Group D.O.O. Verfahren zur Herstellung eines Plankommutators sowie Plankommutator
DE102012010251A1 (de) * 2012-05-25 2013-11-28 Robert Bosch Gmbh Plankommutator und Verfahren zur Montage eines Plankommutators auf eine Welle einer elektrischen Maschine
JP6528490B2 (ja) * 2015-03-20 2019-06-12 スズキ株式会社 回転電機
CN107733176B (zh) * 2017-09-26 2019-11-15 东莞市大为工业科技有限公司 一种马达转向器与马达线圈的焊接工艺方法

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DE1910611A1 (de) * 1968-03-13 1969-10-09 Zentral Lab Elektrogeraete Veb Stromanschluss fuer Kommutatorlamellen,vorzugsweise aus Kohle
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Also Published As

Publication number Publication date
MX2008014328A (es) 2008-11-27
JP2009536512A (ja) 2009-10-08
RU2008143454A (ru) 2010-06-20
DE102006021696A1 (de) 2007-11-15
US20090091209A1 (en) 2009-04-09
CN101490912A (zh) 2009-07-22
BRPI0711359A2 (pt) 2011-09-27
DE102006021696B4 (de) 2014-04-24
WO2007128379A1 (fr) 2007-11-15
CN101490912B (zh) 2011-01-19
HK1130954A1 (en) 2010-01-08

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