WO2009013043A2 - Stator dans un moteur électrique à rotor intérieur - Google Patents

Stator dans un moteur électrique à rotor intérieur Download PDF

Info

Publication number
WO2009013043A2
WO2009013043A2 PCT/EP2008/056484 EP2008056484W WO2009013043A2 WO 2009013043 A2 WO2009013043 A2 WO 2009013043A2 EP 2008056484 W EP2008056484 W EP 2008056484W WO 2009013043 A2 WO2009013043 A2 WO 2009013043A2
Authority
WO
WIPO (PCT)
Prior art keywords
stator
carrier teeth
teeth
carrier
radially
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.)
Ceased
Application number
PCT/EP2008/056484
Other languages
German (de)
English (en)
Other versions
WO2009013043A3 (fr
Inventor
Gerhard Decker
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 WO2009013043A2 publication Critical patent/WO2009013043A2/fr
Publication of WO2009013043A3 publication Critical patent/WO2009013043A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores

Definitions

  • the invention relates to a stator in one
  • Internal rotor DC motor which comprises a rotor armature rotatably mounted thereon with a permanent magnet in a stator.
  • the stator consists of a plurality of circumferentially uniformly distributed and extending in the radial direction of the carrier teeth, which are held on an outer support ring.
  • On the carrier teeth are wound up to generate a magnetic field energizable coil windings.
  • the carrier teeth For the production of the stator, the carrier teeth must be inserted into recesses, which are introduced on the inside of the stator ring, and are connected to the stator ring.
  • this can be accomplished only with a relatively high cost, since the coils must already be placed on the carrier teeth before the connection with the stator ring and only a relatively small space for the arrangement of the total 12 carrier teeth is available.
  • Task underlying a stator in an internal rotor electric motor specify, which is characterized by a simple structural design and ease of manufacture.
  • the stator according to the invention in an internal rotor electric motor which is used in particular as a servomotor in motor vehicles, has a radially outer stator ring and a plurality of circumferentially distributed and radially inwardly extending support teeth forming pole pieces for receiving energizable coils.
  • the stator ring is composed of a plurality of individual return segments, which in the assembled state form the continuous stator ring. Furthermore, it is provided that the support teeth arranged on the radial inner side of the stator ring have rectilinear side walls in the region of their radially outer end face, which are formed without lateral protrusions.
  • the prefabricated and wound stator is pressed into a motor steel pot, then the usually composed of laminated cores stator is permanently clamped and fixed.
  • Return segments recesses for receiving the carrier teeth introduced. These recesses can completely penetrate the return segments in the radial direction, wherein possibly only a partial penetration in the manner of a blind hole in
  • the recesses simplify the placement of the return segments on the provisionally held support teeth, also a safer and more durable connection between the support teeth and the return segments is achieved, which is also able to absorb higher forces.
  • one recoil segment is assigned at least two carrier teeth. From an ergonomic point of view, fewer assembly steps are required than with a smaller denomination of the return segments. In addition, the stability of the stator is improved by the larger return segments.
  • both opposite circumferential end portions each have a radially recessed - A -
  • the support teeth in the region of their radially inner end face have at least one, but advantageously two projecting in opposite circumferential directions projections that secure the attached coils against slipping radially inward.
  • the radial projections of adjacent carrier teeth can touch one another, so that a continuous, the armature shaft enclosing inner ring is formed.
  • constructive stops may be provided which limit the radial insertion of the return segments on the carrier teeth to reach the final mounting position.
  • Fig. 1 is a plan view of a stator in one
  • Internal rotor electric motor comprising a plurality of radially arranged carrier teeth for receiving a coil and a carrier teeth holding, radially outer stator ring, which is composed of individual return segments, 2 is a view of the stator with a flat development of the return segments and a side view of the same,
  • FIG. 3 shows the carrier teeth of the stator, which are placed on a holding tool according to their later arrangement during a first assembly step
  • FIG. 4 is a side view of another assembly step in which a return segment is approximated radially to the support teeth on the holding tool
  • Fig. 5 is a representation corresponding to Fig. 4, but with the return segment in its final position, in which protrude the frontal portions of the support teeth in corresponding recesses in the return segment.
  • the stator 1 shown in FIG. 1 is part of an EC internal rotor electric motor (electronically commutated motor), which is used in particular as a servomotor in motor vehicles, for example in steering power steering systems (Electric Power Steering EPS).
  • the stator has an outer stator ring 2 and inner, extending in the radial direction of the carrier teeth 3, which are each carrier of a current-supply coil 4.
  • the carrier teeth 3 are fixedly connected to the stator ring 2 and are held by this.
  • Each support tooth 3 has in the region of its radially inner end face two laterally projecting in the circumferential direction projections 5, wherein the extensions 5 adjacent support teeth touch and thus form an inner ring which encloses the armature shaft receiving the interior.
  • the stator ring 2 is constructed from individual part-circular return segments 6, which are assembled to form the continuous, uninterrupted ring.
  • two carrier teeth 3 is associated with a return segment 6.
  • recesses 7 are introduced into the return segments 7, which serve to receive the radially outer, front-side sections 3a of the support teeth 3.
  • Such recesses 7 are located in the middle - in
  • the return segments 6 each have a plurality of recesses 7, in each of which an associated frontal section 3a of a support tooth 3 projects.
  • the carrier teeth 3 are held on a base body 8, which is formed integrally with the carrier teeth and over which the frontal portions 3a of the carrier teeth rise.
  • a step 9 can be formed on the return segment 6, which limits the radial insertion of the return segment onto the carrier tooth.
  • the axially standing in a row support teeth 3 including the associated base body 8 may each be formed as individual sheets, which are combined to form a laminated stator core.
  • FIGS. 3 to 5 show various assembly steps for producing the stator.
  • the carrier teeth 3 are initially provisionally applied to a holding tool 10 placed, according to their later position within the stator ring.
  • the holding tool 10 has for this purpose the same inner diameter as the later stator for receiving the armature shaft.
  • each support tooth 3 is formed smooth and straight, which facilitates the placement of the coils on the support tooth. If necessary, it may be sufficient to provide a slight lateral projection in the region of the free end face of each carrier tooth in order to achieve a provisional securing of the attached coils. Optionally, however, it is also expedient that the carrier teeth taper radially from the inside to the outside in cross-section, whereby an even easier plugging of the coils is achieved.
  • the individual return segments 6 are placed radially from outside to inside on the support teeth 3 after placing the coils on the respective associated carrier tooth 3, such that the radially outer, front-side portion 3a in engagement the respective associated recess 7 in the return segment 6 passes.
  • the final position of a return segment 6 is shown in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention concerne un stator d'un moteur électrique à rotor intérieur, présentant une bague de stator située radialement à l'extérieur, et plusieurs dents support réparties sur la périphérie et s'étendant radialement vers l'intérieur, destinées à recevoir des bobines électrisables. La bague de stator est composée d'une pluralité de segments de retour individuels formant la bague de stator traversante à l'état assemblé.
PCT/EP2008/056484 2007-07-23 2008-05-27 Stator dans un moteur électrique à rotor intérieur Ceased WO2009013043A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710034195 DE102007034195A1 (de) 2007-07-23 2007-07-23 Stator in einem Innenläufer-Elektromotor
DE102007034195.6 2007-07-23

Publications (2)

Publication Number Publication Date
WO2009013043A2 true WO2009013043A2 (fr) 2009-01-29
WO2009013043A3 WO2009013043A3 (fr) 2009-04-09

Family

ID=40130951

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/056484 Ceased WO2009013043A2 (fr) 2007-07-23 2008-05-27 Stator dans un moteur électrique à rotor intérieur

Country Status (2)

Country Link
DE (1) DE102007034195A1 (fr)
WO (1) WO2009013043A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102498639A (zh) * 2009-08-05 2012-06-13 罗伯特·博世有限公司 电动机的定子
EP2456046A4 (fr) * 2009-07-14 2017-05-03 LG Innotek Co., Ltd. Stator et moteur comprenant ce stator
WO2017141562A1 (fr) * 2016-02-18 2017-08-24 三菱電機株式会社 Stator de machine électrique tournante, machine électrique tournante, et procédé de fabrication de stator de machine électrique tournante
US11245293B2 (en) 2019-08-14 2022-02-08 Industrial Technology Research Institute Motor stator with dovetail or rectangular mount structure and stator teeth airgap width ratio

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009027661A1 (de) 2009-07-13 2011-01-20 Robert Bosch Gmbh Stator in einem Elektromotor
DE102009029220A1 (de) 2009-09-04 2011-03-10 Robert Bosch Gmbh Elektromotor, insbesondere Stell- oder Antriebsmotor in Draftfahrzeugen
DE102011078513A1 (de) 2011-07-01 2013-01-03 Robert Bosch Gmbh Trägerzahn zur Aufnahme einer bestrombaren Spule

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041798Y2 (ja) * 1980-03-24 1985-12-19 三菱電機株式会社 回転電機
US5223761A (en) * 1991-08-14 1993-06-29 General Electric Company Electromotor with laminated stator and method of manufacturing the same
JP2000341889A (ja) * 1999-05-25 2000-12-08 Hitachi Ltd 回転機用コア、その製造方法、コア用素片および回転機
JP2001112220A (ja) * 1999-10-06 2001-04-20 Asmo Co Ltd 回転電機用固定子の製造方法
JP2001238377A (ja) * 2000-02-24 2001-08-31 Minebea Co Ltd 回転電機
JP2005278238A (ja) * 2004-03-23 2005-10-06 Ishikawajima Harima Heavy Ind Co Ltd 電動機のステータコア
JP2006050755A (ja) * 2004-08-03 2006-02-16 Mitsui High Tec Inc リサイクル容易な固定子鉄心及びその製造方法
JP4649951B2 (ja) 2004-10-28 2011-03-16 日本電産株式会社 モータおよび電機子の製造方法
JP4926456B2 (ja) * 2005-11-11 2012-05-09 アスモ株式会社 ステータの製造方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2456046A4 (fr) * 2009-07-14 2017-05-03 LG Innotek Co., Ltd. Stator et moteur comprenant ce stator
US9768650B2 (en) 2009-07-14 2017-09-19 Lg Innotek Co., Ltd. Stator and motor comprising same
CN102498639A (zh) * 2009-08-05 2012-06-13 罗伯特·博世有限公司 电动机的定子
WO2017141562A1 (fr) * 2016-02-18 2017-08-24 三菱電機株式会社 Stator de machine électrique tournante, machine électrique tournante, et procédé de fabrication de stator de machine électrique tournante
JPWO2017141562A1 (ja) * 2016-02-18 2018-05-31 三菱電機株式会社 回転電機の固定子、回転電機、および、回転電機の固定子の製造方法
US11245293B2 (en) 2019-08-14 2022-02-08 Industrial Technology Research Institute Motor stator with dovetail or rectangular mount structure and stator teeth airgap width ratio

Also Published As

Publication number Publication date
DE102007034195A1 (de) 2009-01-29
WO2009013043A3 (fr) 2009-04-09

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