EP1388198A1 - Moteur a collecteur multipolaire presentant des conducteurs a pont - Google Patents

Moteur a collecteur multipolaire presentant des conducteurs a pont

Info

Publication number
EP1388198A1
EP1388198A1 EP02708172A EP02708172A EP1388198A1 EP 1388198 A1 EP1388198 A1 EP 1388198A1 EP 02708172 A EP02708172 A EP 02708172A EP 02708172 A EP02708172 A EP 02708172A EP 1388198 A1 EP1388198 A1 EP 1388198A1
Authority
EP
European Patent Office
Prior art keywords
commutator
armature
bridge
commutator motor
motor according
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Withdrawn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
EP02708172A
Other languages
German (de)
English (en)
Inventor
Gerald Kuenzel
Jörg Brandes
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 EP1388198A1 publication Critical patent/EP1388198A1/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Withdrawn legal-status Critical Current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
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • H02K3/16—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots for auxiliary purposes, e.g. damping or commutating
    • 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
    • H02K23/26—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by the armature windings
    • H02K23/30—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by the armature windings having lap or loop windings

Definitions

  • the invention relates to a multi-pole commutator motor with at least four stator poles and. it with these interacting armature coils.
  • the armature coils are each electrically connected to two commutator bars of a commutator for power supply.
  • the number of armature coils is greater than the number of stator poles, with armature-side electrical bridge conductors being connected in parallel to reduce the number of brushes contacting the commutator that form magnetically identically oriented armature poles.
  • Commutator motors of this type are used, for example, as pump drives for anti-lock braking systems in motor vehicles, as servo drives or as adjusting drives. Such commutator motors can also be referred to as small motors, since they usually cover a power range of up to approximately one kilowatt.
  • a typical example of such a commutator motor has, for example, four stator poles, which are preferably permanently excited, and accordingly four armature poles which interact with them and are formed by armature coils.
  • the armature coils are connected to an armature-side commutator, which is usually powered by four brushes. The brushes rub over the commutator bars of the commutator.
  • the hanging of the bridge conductors is problematic, since they have to extend transversely to the direction of rotation of the armature, because typically diametrically opposed commutator segments are connected to one another by the bridge conductors. It is also necessary to have an electrical on the shaft of the armature insulated section to support the bridge conductor.
  • commutator fins are connected in parallel by means of compensating connections in order to allow a flow of compensating currents between the commutator fins so that the brushes are not burdened by compensating currents.
  • a reduction in brushes is not provided and would lead to high commutator currents in such powerful motors, which would result in problematic current stall behavior, possibly even a round fire on the commutator.
  • the bridge conductors are guided over armature grooves, so that "hooking angles" which are favorable in terms of winding technology are possible on the grain mutator lamellae.
  • the bridge conductors extend essentially along the direction of rotation of the armature, whereas in the prior art they extend in this area transverse to the direction of rotation of the armature.
  • the winding of the armature is significantly simplified by the invention.
  • the Komutatormotor is compact, since there is no space between the commutator and armature teeth any bridge ladder to be accommodated must be provided. In any case, the provision of the bridge conductors saves brushes, so that the commutator motor according to the invention can be manufactured inexpensively.
  • the bridge conductors are preferably wound around at least two or more anchor teeth. It has proven to be advantageous to manufacture the bridge conductors from winding wire and expediently to hang them together with the armature coils on the hanging devices provided on the commutator bars for hanging the armature coils. It goes without saying that other types of connection for electrically connecting the bridge conductors to commutator bars are also possible, for example soldering, crimping or welding.
  • Bridge conductors formed from winding wire can be hastily wound directly during winding of the armature coils. Expediently, they then consist of the same winding wire as the armature coils, so that no change of material is necessary when inserting the bridge conductors.
  • the bridge conductors can in principle be formed from a single electrical conductor, for example from a single winding wire, one end of which is electrically connected to a commutator bar. This variant of the invention has proven to be advantageous in practice.
  • the bridge conductors can be formed in each case from a number of line connections, for example from two line connections.
  • the line connections that are assigned to a bridge conductor can be routed via different anchor grooves.
  • the current load of the individual line connections of a bridge conductor is thus reduced and, on the other hand, it is possible that, in an expedient embodiment of the invention, the line connections respectively assigned to a bridge conductor are arranged together with the armature coils in the armature slots in such a way that on the respective armature coils and on At least one line connection, which are arranged together in an armature groove, allows a flow of current oriented in the same direction. A field weakening of the respective armature coil is avoided by the current flow oriented in the same direction.
  • supports and / or fixations are provided for holding the bridge conductors, so that the respective bridge conductors are electrically insulated from an armature shaft penetrating the armature of the commutator motor.
  • the supports or fixations mechanically stabilize the bridge ladder.
  • the bridge conductors can advantageously also be mechanically fixed by an insulating compound, in particular by a casting compound.
  • the armature coils can in principle be applied to the armature in different winding variants.
  • a multipole loop winding has proven to be advantageous.
  • a preferred area of application for the invention is small electric motors with a power range of up to one kilowatt, which are used, for example, as a pump drive for an anti-lock braking system for motor vehicles, as a servo drive or as an adjusting drive.
  • the figure shows the development diagram of an armature 13 of a four-pole commutator motor 14.
  • the commutator motor 14 has a stator 15 with stator poles 16, 17, 18, 19.
  • the stator poles 16 to 19 can be excited electrically or permanently magnetically.
  • the armature 13 is rotatably arranged in the stator 15.
  • Coils 31 to 42 are supplied with current via brushes 20 and 21, which loop through a commutator 22.
  • the commutator 22 has commutator bars 1 to 12 which are electrically connected to the coils 31 to 42.
  • the coil 31 is connected on the one hand to the commutator bar 1 and on the other hand to the commutator bar 2, the coil 32 on one end to the commutator bar 2 and on the other hand to the commutator bar 3.
  • the further coils 33 to 42 are also connected to the commutator bars 3 to 12, 1.
  • the coils 31 to 42 each consist of a plurality of turns of a metallic conductor, for example an insulated copper wire, each of them several times around armature teeth 51 to 62 are wound and the ends of which are electrically connected to the commutator bars 1 to 12.
  • the coil 31 is wound several times around the armature teeth 51, 52 and 53 so that its turns come to lie in the armature grooves 82 and 73 arranged between the armature teeth 51, 56 and 53, 54. Furthermore, the coil 31 is electrically connected to the commutator bars 1 and 2. The further coils 32 to 42 are wound around the armature teeth 51 to 62 according to the same winding scheme.
  • the coils 31 to 42 are arranged in a loop winding on the armature 13.
  • This type of winding as many brush sets are required as the respective commutator has excitation pole pairs, in the specific case, for example, two brush sets, each with two brushes.
  • the loop winding can also be called a parallel winding, since the winding parts of the armature are connected in parallel by the brushes of brush sets which are connected in parallel in the conventional commutator motor.
  • the commutator bars 1, 7; 2, 8; 3, 9; 4, 10; 5, 11/6, 12 are connected in parallel by bridge conductors 43 to 48.
  • There- by four brushes are not required as in a conventional four-pole commutator motor, but only two brushes for contacting the commutator 22. Nevertheless, not only brushes 20 and 21, which are supplied with electrical current via feed lines 25, 26, but also brushes 23, 24 connected in parallel to brushes 20, 21 are shown in dashed lines in the figure. In fact, however, the brushes 23, 24 are not provided in the cortimutator motor 14. This is illustrated in the figure by dashed lines 27, 28 to the brushes 23, 24.
  • the other half of the armature current I ⁇ / 2 would be fed in via the commutator bar 4 in the armature position shown. However, this is not provided for the commutator motor 14. Instead, the armature current I A / 2 can flow to the commutator bar 4 via the bridge conductor 43. From there it flows through the armature coil 34, the commutator plate 5, the armature coil 35, the commutator plate 6, the armature coil 36 and the commutator plate 7, in order to be able to flow away from it via the brush 21 and the line 26.
  • the bridge conductors 43 to 48 are guided through the anchor grooves 71 to 82.
  • the same winding pattern applies to all bridge conductors 43 to 48. It is therefore sufficient to explain the winding diagram of the bridge conductor 43.
  • the bridge conductor 43 in the present case is formed by winding wire and is wound directly when the armature 13 is wound.
  • the bridge conductor 43 is electrically connected to the commutator bar 1.
  • the bridge conductor 43 is e.g. in the contact area with the commutator bars 1 and 7 in each case electrically conductive, for example by removing an otherwise existing paint insulation.
  • Other types of connection between the bridge conductors 43 to 48 and the commutator bars 1 to 12, e.g. Soldering, welding, riveting or the like are easily possible.
  • the bridge conductor 43 leads from the commutator bar 1 to the armature groove 82, and past the armature teeth 51 to 56 to the armature groove 76. From the armature groove 76, the bridge conductor 43 is guided to the commutator bar 7 and is electrically connected there.
  • the bridge conductors 43 to 48 are in any case connected to the commutator segments 1 to 12 in such a way that they run at the common connection points essentially parallel or only slightly angled to the axis of rotation 50 of the armature 13 and the commutator 22. Armature slots extend 71-82 parallel '48 in the axis of rotation 50 or at most slightly ge claimeden, the connection of the bridge conductor 43 to 48 with the commutator segments 1 to 12 of production technology very simple - each case designed by the invention, in which the bridge conductors 43rd
  • the already explained line routing of the bridge conductors 43, 46 is referred to below as 43a, 46a.
  • line connections 43b, 46b are shown, some of which are guided in different anchor grooves than the line connections 43a, 46a.
  • the line connection 43b leads from the commutator lamella 1 to the armature groove 73 past the armature teeth 54, 55, 56 to the armature groove 76 and from there to the commutator lamella 7.
  • This line routing ensures that the current flow on the bridge conductor 43b is oriented in the same direction in the armature position shown is like the current flow of the conductors of the armature coils 31, 33 and 34, 37 arranged in the armature grooves 73, 76.
  • the current flow on the bridge conductor 43b thus does not lead to a field weakening of the armature field, but even to a field strengthening.
  • bridge conductor 43 could have both line connections 43a, 43b and possibly also further line connections.

Landscapes

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

Abstract

L'invention concerne un moteur à collecteur multipolaire (14) comportant au moins quatre pôles de stator (16-19) et des bobines d'induit (31-42) qui coopèrent avec ces derniers et sont chacune raccordées électriquement à deux lames (1-12) d'un collecteur (22) dans le but d'assurer l'alimentation électrique, le nombre de ces bobines d'induit étant supérieur à celui des pôles de stator (16-19). Afin de réduire le nombre des balais (20,21,23,24) assurant le contact avec le collecteur (22), des bobines d'induit (31-42) formant des pôles d'induit à orientation magnétique similaire sont montées en parallèle par l'intermédiaire de conducteurs électriques à pont (43-48) côté induit. Le moteur à collecteur (14) est caractérisé en ce qu'au moins une partie des conducteurs à pont (43-48) sont guidés dans des rainures d'induit (71-82).
EP02708172A 2001-03-31 2002-01-26 Moteur a collecteur multipolaire presentant des conducteurs a pont Withdrawn EP1388198A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10116183 2001-03-31
DE10116183A DE10116183A1 (de) 2001-03-31 2001-03-31 Mehrpoliger Kommutatormotor mit Brückenleitern
PCT/DE2002/000272 WO2002080340A1 (fr) 2001-03-31 2002-01-26 Moteur a collecteur multipolaire presentant des conducteurs a pont

Publications (1)

Publication Number Publication Date
EP1388198A1 true EP1388198A1 (fr) 2004-02-11

Family

ID=7679960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02708172A Withdrawn EP1388198A1 (fr) 2001-03-31 2002-01-26 Moteur a collecteur multipolaire presentant des conducteurs a pont

Country Status (6)

Country Link
US (1) US6800980B2 (fr)
EP (1) EP1388198A1 (fr)
JP (1) JP2004519198A (fr)
KR (1) KR20030007663A (fr)
DE (1) DE10116183A1 (fr)
WO (1) WO2002080340A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6975054B2 (en) * 2003-04-18 2005-12-13 Ultra Motor Company Limited Electric motor
BRPI0515086B1 (pt) 2004-10-22 2016-11-22 Mitsuba Corp método para produzir um induzido de uma máquina elétrica rotativa
JP4468393B2 (ja) * 2007-03-22 2010-05-26 アスモ株式会社 回転電機の電機子、電機子の巻線方法、及び回転電機
DE102007044399A1 (de) * 2007-09-18 2009-04-09 Continental Automotive Gmbh Vierpoliger elektromotorischer Antrieb mit einem Hammerbürstenhaltersystem
FR2959360B1 (fr) * 2010-04-27 2013-01-18 Valeo Equip Electr Moteur Machine electrique comportant un rotor muni d'un bobinage permettant de faciliter la commutation, et demarreur associe
KR101232883B1 (ko) 2011-09-05 2013-02-13 동양기전 주식회사 직류 모터의 회전자의 권선 방법
JP6886604B2 (ja) * 2016-09-27 2021-06-16 株式会社アイシン 回転電機の製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5949785B2 (ja) * 1977-12-05 1984-12-05 株式会社セコ−技研 電機子巻線が二重に重畳する直流電動機
US4437029A (en) * 1981-10-16 1984-03-13 Itsuki Ban Direct current motor
JPS58108950A (ja) * 1981-12-14 1983-06-29 Canon Inc 直流モ−タ−
DE3645262C2 (de) * 1986-12-05 1993-10-14 Robert Stahlschmidt Elektromot Induktionsmotor
JP2535181B2 (ja) * 1987-09-30 1996-09-18 株式会社シコー技研 電機子巻線が重畳しない５相の直流電動機
DE19757279C1 (de) * 1997-12-22 1999-08-26 Siemens Ag Kommutatormotor, insbesondere zum Antrieb eines Kraftfahrzeug-Servoantriebes, und Verfahren zu dessen Herstellung
JP3559181B2 (ja) * 1998-11-30 2004-08-25 三菱電機株式会社 電動パワーステアリング装置用モータ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02080340A1 *

Also Published As

Publication number Publication date
WO2002080340A1 (fr) 2002-10-10
US6800980B2 (en) 2004-10-05
US20040027023A1 (en) 2004-02-12
DE10116183A1 (de) 2002-10-24
JP2004519198A (ja) 2004-06-24
KR20030007663A (ko) 2003-01-23

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