EP0205459A1 - Rotor a disques pour machine electrique a entrefer axial - Google Patents

Rotor a disques pour machine electrique a entrefer axial

Info

Publication number
EP0205459A1
EP0205459A1 EP19850905396 EP85905396A EP0205459A1 EP 0205459 A1 EP0205459 A1 EP 0205459A1 EP 19850905396 EP19850905396 EP 19850905396 EP 85905396 A EP85905396 A EP 85905396A EP 0205459 A1 EP0205459 A1 EP 0205459A1
Authority
EP
European Patent Office
Prior art keywords
winding
disc rotor
heads
rotor according
commutator
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Withdrawn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
EP19850905396
Other languages
German (de)
English (en)
Inventor
Peter Ahner
Helmut HÄRER
Helmut Kreuzer
Siegfried Schustek
Ludger Verstege
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0205459A1 publication Critical patent/EP0205459A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/54—Disc armature motors or generators

Definitions

  • the invention is based on a disk rotor for an electric axial air splitting machine, in particular for a direct current motor, according to the preamble of claim 1.
  • a laminated disk rotor for DC motors with an axial air gap is already known (DE-AS 31 07 834), which consists of two or more metal disks arranged in pairs. The metal disks are punched out in such a way that each carries a large number of winding halves. Each pair of panes is laminated on both sides to a pane made of epoxy resin laminate. With such a type of disc rotor, however, there is a relatively large air gap between the excitation magnets of the DC motor Required if the cross section of the winding halves is chosen to be large enough to achieve a sufficient heat capacity of the disc rotor.
  • panes serving as conductors have a low heat capacity, so that even with brief overloads of the direct current motor, inadmissible heating occurs which can lead to the conductor becoming detached from the epoxy resin laminate.
  • the rotor of a known DC miniature motor (DE-AS 23 56 913) has a winding which is formed by a series of elementary coils, which partially overlap in such a way that the successive turns are offset at an angle are.
  • the winding wire is preferably provided with a thermoplastic coating and the turns are glued together by heating.
  • DE-AS 21 17 048 discloses a disk-shaped wave winding made of insulated wire for an electrical axial air gap machine, in which the wire is guided around an inner ring of pins and around an outer ring of pins in a specific winding step.
  • Pins are part of a winding teaching, which is poured together with the winding.
  • the wire armature is relatively thick due to the multiply intersecting conductors and the winding heads lying one above the other several times on the pins and therefore also causes a relatively large air gap in the axial air gap machine.
  • the disc rotor according to the invention with the characterizing features of claim 1 has the advantage that a thin disc is produced in a wire-wound design.
  • Armature winding is considerably simplified in that, due to the formation of the armature winding, the wire never has to be guided under wires which have already been laid during the continuous winding.
  • the distribution of the wires in two layers enables good heat dissipation, since all the wires are close to the surface.
  • the disc rotor according to the invention is therefore particularly well suited for highly dynamic drives with a small axial length and a short-term overload capability.
  • An advantageous embodiment of the invention results from claim 2.
  • the fact that the element sides lie close together on their smallest radius enables the greatest possible armature current coating to be achieved.
  • An advantageous embodiment of the invention also results from claim 3. Since the element heads are placed as narrowly as possible in the area of the outer winding head, the outer winding head as a whole has only a relatively small radial extension. The electrically active part of the armature winding, primarily the element sides, can thus be made very large in relation to the outer end winding.
  • the disc rotor has a constant thickness in the entire winding area.
  • the excitation magnets of the axial air gap machine, or their pole pieces, can thus also partially cover the outer element heads and thus enable higher torque generation or power output.
  • An advantageous embodiment of the invention also results from claim 7. Because of the folding of the element heads by approximately 90 to the rotor plane achieved by this configuration of the outer winding head, the moment of inertia is reduced, since the copper weight of the element heads is thus on a smaller radius of inertia. At the same time, by the element heads formed, the spatial structure of the armature winding, the so-called wire winding, is considerably stiffened, so that the wobble phenomena that are almost inevitable in a disk rotor and occur particularly when heated are significantly reduced. Preferably, only a part of the winding head formed by the element heads is bent. This is sufficient for stiffening the wire winding. The part of the outer end winding remaining on the same level as the element sides is used as an electrically active part.
  • the radially extending element sides can either form a flat disc as in the embodiment according to claim 4 or, as in the embodiment according to claim 5, a flat truncated cone.
  • a drum commutator allows finer lamination with a given diameter and has a favorable heat capacity and low ripple.
  • Fig. 1 is a plan view of a potted
  • FIG. 2 is a view of the disc rotor in the direction of arrow A in Fig. 1, - 6 -
  • FIG. 3 shows a plan view of two winding trains, each with three winding elements of an armature winding of the disk rotor in FIG. 1, with the winding wire being shown in a greatly enlarged form,
  • FIG. 4 shows a longitudinal section of an axial air splitting machine with a disc rotor according to a further exemplary embodiment.
  • The. 'L shows schematically in plan view and in front Ver ⁇ Scheiben ⁇ shown pour runner has an armature coil 10 of insulated wire, so-called in Figure with an epoxy resin. Enameled wire, and a thereto angeringe- NEN drum commutator 11 or -Stromwender or
  • the drum commutator 11 is potted with the armature winding 10 after covering its commutator fins 12 or commutator bars with the armature winding 10 by means of an epoxy resin.
  • the disc rotor consisting of armature winding 10 and drum commutator 11 is seated on a rotor shaft 13 in a rotationally fixed manner.
  • the total or current turning step is 16, doubling time of the first "or the coil width be ⁇ transmits 7 and the second part step or Weg ⁇ step is 9.
  • the armature winding 10 is at 49 commutator segments 12 of the drum commutator 11 concluded reasonable, of which in Fig 1 the first commutator lamella is marked with 1 and the last commutator lamella with 49.
  • the armature winding 10 By connecting the armature winding 10 to the individual commutator bars 12, the armature winding 10 is divided into individual winding elements 14 which are electrically connected to one another. Three such winding elements 14, which follow one another in a winding train, are highlighted in FIG. 1 by reinforced line guidance. 3, such winding elements 14 are shown in the course of two successive winding trains. Each winding train has three winding elements 14 corresponding to the 6-pole version of the shaft winding. The first winding train begins at collector lamella 12 with number 1 and ends at collector lamella 12 with number 49, the second winding train begins accordingly with commutator lamella 12 with number 49 and ends with commutator lamella 12 No. 48.
  • Each winding element 14 has two spaced-apart, radially extending element sides 15, 16 and element elements 17, 18 angled therefrom, which connect the element sides 15, 16 at the end.
  • the element heads 17, 18 can be divided into two partial heads 171, 172 and 181, 182, respectively.
  • the outer element heads 17 connect the element sides 15, 16 belonging to the same winding element 14, while the partial heads 181, 182 of the inner element heads 18 are each connected to the part heads 181, 182, of the winding elements 14 neighboring in the course of a winding train.
  • the transition points of the partial heads 181, 182 belonging to adjacent winding elements 14 are connected to the commutator bars 12 via taps 23. As shown schematically in FIG.
  • the element sides 15, 16 and the outer element heads 17 lie in only two superimposed winding layers 19, 20, the element sides 15, 16 each being radially aligned.
  • the wire is guided in the winding course from the start of the winding (commutator lamella 12 with the number 1) to the end of the winding (commutator lamella 12 with the number 2) in such a way that the wire only in the area of the already existing wire assignment of the lower winding layer 19 in the course of the winding the upper winding layer 20 runs in the winding course and the layer transition lies in the area of the outer element heads 17.
  • the wire guide in the lower layer 19 is drawn out in FIG. 1 and the wire guide in the upper layer 20 is shown in broken lines.
  • This configuration of the armature winding 10 ensures that, during the continuous winding of the wire, the winding elements 14 never have to be guided under winding elements which have already been laid.
  • the lower winding layer 19 is filled in the area of the element sides 15, 16, the upper winding layer 20 is covered with element sides 15, 16.
  • the last winding pull ultimately lies completely in the upper winding layer 20.
  • the view of the disc edge of the disc rotor shown in FIG. 2 illustrates that also in the region of the outer element heads 17 the insulated wire only ever changes between the two winding layers 19 and 20.
  • the completed armature winding 10 thus forms a disc with the in the areas of the element sides 15, 16 and the outer element heads 17
  • the element sides 15, 16 in both winding layers 19, 20 run in parallel planes which either run at right angles to the rotor axis 13 or - as shown in FIG Form truncated cone.
  • the outer winding head 24 formed by the outer element heads 17 is aligned with the planes spanned by the element sides 15, 16.
  • the armature winding 10 is thin on both sides; Resin-impregnated reinforcing fabric covered, the representation of which is omitted here.
  • FIG. 3 shows, by way of example, the actual arrangement and configuration of the winding elements 14 for two winding trains lying next to one another.
  • the wire diameter has been chosen so large that the actual wire position is clear.
  • the radially extending element sides 15, 16 extend so far towards the center of the armature winding 10 that element sides 15, 16, which are adjacent to one another but belong to different winding elements 14, extend in a winding layer 19, 20 at the bending points 21, 22 of the inner element heads 18 or partial heads 181, 182. almost touch.
  • the element sides 15, 16 thus lie close together on their smallest diameter, so that the largest possible armature current coating is achieved. is enough.
  • the inner element heads 18 or partial heads 181, 182 initially form approximately a right angle with the element sides 15, 16 and then run approximately at a constant radius. As a result, adjacent inner element heads 18 are partially one above the other. In the case of the complete armature winding 10, the inner element heads 18 therefore form a wire bundle, in which the commutator connections 23 of the element heads 18 lie on the radius of the element heads 18 and are drawn inwards only for the sake of clarity.
  • the outer element heads 17 or partial heads 171, 172 angled from the element sides 15, 16 of the winding elements 14 are first placed at an obtuse angle to the element sides 15, 16 and then guided in an arc or sickle-like manner.
  • the size of the angle and the subsequent crescent shape of the dividing heads 171, 172 are determined by the fact that neighboring dividing heads 171, 172 lie side by side with the smallest distance.
  • Adjacent partial heads 171 and 172, which belong to different winding elements, preferably touch at least along an element head section, as can be clearly seen in FIG. 3.
  • the exact geometry of the outer element heads 17 depends overall on the choice of the number of poles, the winding diameter and the spacing of the element sides 15, 16 from one another, i.e. So from the coil width.
  • the axial air splitting machine seen in longitudinal section in FIG. 4 has, in a known manner, a housing 30 and an excitation system arranged on the housing, of which two permanent magnetic poles in FIG. 4 - 11 -
  • the potted disc rotor 33 sits on a rotor shaft 13 'which is mounted twice in the housing 30.
  • the disc rotor 33 consists of a wire armature or armature winding 10 'and a drum commutator 11'. The one in the top
  • Armature winding 10 consists, however, in that at least a part of the winding head 24 'formed by the outer element heads 17' forms an annular jacket 34 'extending in the direction of the rotor shaft 13', which means that a part of the outer winding elkofpes 24 'opposite the active part of the Element sides 15,16 is folded over by about 90 °.
  • the direction of extension of the ring jacket 34 is directed away from the drum commutator 11 '.
  • the active part of the armature winding 10 ' that is to say the element sides 15, 16 and the remaining, not folded-over part of the winding head 24', has a disk shape, which means that the radial element sides 15, 16 lie in two planes lying parallel one above the other , which are aligned transversely to the rotor shaft 13 '.
  • the active part of the armature winding 10 ' can, as in the disc rotor in Fig. 2 as a cone truncated ⁇ extremely small height are formed.
  • a face commutator can also be provided instead of a drum commutator.
  • a finer lamella division can be carried out on a drum commutator, which results in a " lower torque ripple". results.
  • Another characteristic of a drum commutator is a more favorable heat capacity.
  • the armature winding can also be designed as a coil winding with a number of turns w> l instead of a rod winding as shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)
  • Dc Machiner (AREA)

Abstract

Dans ce rotor à disques pour machine électrique à entrefer axial munie d'un enroulement d'induit (10) en fil isolé, les côtés des éléments (15, 16) et les têtes extérieures (17) des éléments sont disposés en seulement deux couches d'enroulements (19, 20) superposées en vue d'une fabrication automatique simplifiée pour une capacité thermique élevée, les côtés des éléments (15, 16) étant orientés radialement. Le fil est dans le tracé de l'enroulement du début (1) à la fin de l'enroulement (2) guidé de telle façon qu'il s'étend exclusivement dans le domaine de l'emplacement du fil de la couche inférieure (19) à la couche supérieure (20) et que le passage d'une couche à l'autre se trouve dans la région des têtes extérieures (17) des éléments.
EP19850905396 1984-12-21 1985-10-30 Rotor a disques pour machine electrique a entrefer axial Withdrawn EP0205459A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843446671 DE3446671A1 (de) 1984-12-21 1984-12-21 Scheibenlaeufer fuer eine elektrische axialluftspaltmaschine
DE3446671 1984-12-21

Publications (1)

Publication Number Publication Date
EP0205459A1 true EP0205459A1 (fr) 1986-12-30

Family

ID=6253407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850905396 Withdrawn EP0205459A1 (fr) 1984-12-21 1985-10-30 Rotor a disques pour machine electrique a entrefer axial

Country Status (4)

Country Link
EP (1) EP0205459A1 (fr)
DE (1) DE3446671A1 (fr)
ES (1) ES8703692A1 (fr)
WO (1) WO1986003898A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3729534A1 (de) * 1987-09-04 1989-03-16 Philips Patentverwaltung Vorrichtung zum reversierenden verseilen (sz-verseilung) mindestens eines verseilelements eines kabels
JP3623269B2 (ja) * 1994-04-15 2005-02-23 コールモージェン・コーポレーション アキシャル・エアギャップ・モータ
DE102009038718A1 (de) 2009-08-25 2011-03-03 Steffen Nothelle Anordnung zur optimalen Nutzung des Stromleiters bei Scheibenläufermotoren

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1375231A (fr) * 1963-09-04 1964-10-16 Electronique & Automatisme Sa Machine électrique tournante perfectionnée
US3487246A (en) * 1967-08-28 1969-12-30 Ambac Ind Electric machine
US3524251A (en) * 1968-04-08 1970-08-18 Circuit Res Co Method of manufacturing disc-type wire wound electrical machines
FR2086758A5 (fr) * 1970-04-08 1971-12-31 Henry Baudot Jacques
JPS4895506A (fr) * 1972-03-22 1973-12-07
GB2067123B (en) * 1980-01-03 1983-06-02 Secretary Industry Brit Reinforced articles
JPS58130759A (ja) * 1982-01-27 1983-08-04 Matsushita Electric Ind Co Ltd 平面対向型ｄｃモ−タ
JPS60156252A (ja) * 1984-01-05 1985-08-16 サウス・アフリカン・インヴエンシヨンズ・デイベロツプメント　コーポレーシヨン 円盤電機子電気機械

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8603898A1 *

Also Published As

Publication number Publication date
ES550313A0 (es) 1987-02-16
WO1986003898A1 (fr) 1986-07-03
ES8703692A1 (es) 1987-02-16
DE3446671A1 (de) 1986-06-26

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Inventor name: SCHUSTEK, SIEGFRIED

Inventor name: HAERER, HELMUT

Inventor name: KREUZER, HELMUT

Inventor name: AHNER, PETER

Inventor name: VERSTEGE, LUDGER