EP2471161A2 - Moteur électrique, en particulier moteur de démarreur pour un moteur à combustion interne - Google Patents

Moteur électrique, en particulier moteur de démarreur pour un moteur à combustion interne

Info

Publication number
EP2471161A2
EP2471161A2 EP10747042A EP10747042A EP2471161A2 EP 2471161 A2 EP2471161 A2 EP 2471161A2 EP 10747042 A EP10747042 A EP 10747042A EP 10747042 A EP10747042 A EP 10747042A EP 2471161 A2 EP2471161 A2 EP 2471161A2
Authority
EP
European Patent Office
Prior art keywords
electric motor
conductor
motor according
section
end portion
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Withdrawn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
EP10747042A
Other languages
German (de)
English (en)
Inventor
Michael Bayer
Elisabeth Luger
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 EP2471161A2 publication Critical patent/EP2471161A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/0094—Structural association with other electrical or electronic devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/025—Contact members formed by the conductors of a cable end
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits specially adapted for starting of engines
    • F02N11/0862—Circuits specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery
    • 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

Definitions

  • the invention relates to an electric motor, in particular a starter motor for an internal combustion engine, according to the preamble of claim 1.
  • the armature of the electric lectric starter motor is kinematically connected to a starter pinion, via which the crankshaft of the internal combustion engine is set in motion.
  • the power supply for the electric starter motor is usually via strands, which usually consist of copper and are electrically connected to the brush brushes applied to the commutator. Since the carbon brushes are subject to wear, a tracking mechanism is usually provided to compensate for the wear, wherein the wires connected to the carbon brushes must carry out the tracking movement of the carbon brushes.
  • the strands are subjected to considerable loads, which however must not lead to a failure or breakage of the strand over the lifetime of the starter motor.
  • the invention is based on the object to perform the power connection in an electric motor permanently and resiliently with good adaptation to design conditions in the electric motor.
  • the electric motor according to the invention is preferably an electric starter motor for an internal combustion engine, which is designed, for example, as a mechanically commutated DC motor.
  • the motor has one or more pairs of brushes in contact with a commutator, through which the current is conducted into the armature winding of the armature.
  • the brushes are each connected to an electrical conductor for power supply.
  • electrical conductors are provided which lead from a relay to a component of the electric motor and from there via the further conductor to the brushes.
  • the conductor leading from the relay to the component of the electric motor, in particular a pole housing, is coupled to a contact piece, from which also the further conductor leads to the carbon brushes.
  • At least one conductor has a rectangular cross-section in a middle section and is welded to the contact piece in the region of an end-side end section.
  • This end-side end portion preferably also has a rectangular cross-section which, however, has a different format from the central portion.
  • the conductor with the rectangular cross-section has a greater flexibility, which leads to a better adaptation to the installation situation.
  • bendability or flexibility of the conductor exists in the case of Execution of the conductor as a strand no danger of fanning out.
  • the conductor with the rectangular cross-section can be bent or twisted around different axes, without this leading to damage to the conductor.
  • the format in the end portion of the conductor, over which the conductor is welded to the contact piece differs from the format of the rectangular, central portion of the conductor. It is particularly provided that the central portion is formed flatter, that is, has a greater width and a lower height than the end portion welded to the contact piece.
  • the end portion has in this embodiment, an advantageous for the welding process cross-sectional geometry.
  • both opposite end-side end portions of the conductor are each provided with a rectangular cross-section which differs in the cross-sectional geometry or the format relative to the central portion, in particular less flat than the middle portion. It may be expedient to provide at least one of the end sections, if appropriate both end sections with a square cross-section, which is advantageous for the welding operation, since the necessary welding point is reduced, so that the conductor can be welded to save space on the end-side contact element.
  • At least one end-side end portion but preferably both end-side end portions are produced by forming the rectangular cross-section, with which the central portion of the conductor is provided.
  • compaction of the end sections is achieved with less pronounced rectangular cross-section, whereby only the cross-sectional shape changes, but the cross-sectional area in the end sections is the same or at least approximately the same the cross-sectional area in the middle section of the ladder.
  • the transition from the wider middle section of the conductor to at least one narrower end section is advantageously possible.
  • This angle is for example 60 ° or 45 °.
  • a ratio of width to height of at least 3: 2 in the area of the middle section so that the width is at least 1.5 times the height.
  • an even greater ratio of width to height is selected, for example a ratio of 4: 2, 5: 2, 6: 2 or even greater.
  • both end portions are welded to contact members, for example, one end portion of the conductor with a lug and the opposite end portion to the contact piece, which is passed through the pole housing of the electric motor with insulation (e.g., insulating rubber).
  • insulation e.g., insulating rubber
  • the conductor is connected to the commutator with the carbon brush and welded on the opposite side of the commutator with the contact piece, which is guided by the insulating insulating pole housing.
  • Fig. 1 is a schematic representation of an electric motor with a pole housing in which an armature rotates, wherein the power supply to the electric motor via a designed as a strand conductor takes place at one end with a relay and the other end on the side of the electric motor with a mounted on the outside of the pole housing Contact piece is connected,
  • FIG. 2 a top view of the strand
  • FIG. 3 the strand in side view
  • FIG. 4 the strand in section
  • Fig. 5 shows a detail enlargement in the transition region of an end face to the middle portion of the strand.
  • an electric motor 1 which is designed as a mechanically commutated DC motor and is used as a starter motor for internal combustion engines.
  • the electric motor 1 has in a pole housing 2, on the inside of magnets are arranged on a rotating armature 3, which is provided with an energizable, provided with coils anchor packet, the energization of the anchor packet via a commutator 4, on the outside of a carbon brush 5 is applied, which is connected to a designed as a strand 6 conductor.
  • the power supply to the electric motor 1 is carried out starting from a relay 7 via a trained as a strand 8 conductor, which is connected to the side of the electric motor with a contact piece 9, in particular welded, which is arranged on the Polgeophusau basic mix.
  • the strand 6, via which the carbon brush 5 is supplied with power, is connected to the contact piece 9.
  • the strand 8 is welded at the other end with a cable lug 10, which is plugged onto a pin 1 1 in the relay 7 and secured with a nut 12.
  • the strand 8 and suitably also the strand 6 each have a rectangular cross-section in a middle section and a likewise rectangular or square cross-section in its two end sections.
  • the strand 6, 8 consists of a central portion 13 and end-side end portions 14 and 15, via which the strand is welded to the respective contact elements.
  • the front end portions 14 and 15 have a different from the central portion 13 cross-section.
  • the middle section 13 is, as shown in the sectional view of FIG. 4, formed flat and has a relatively large width b and a small height h, wherein the ratio of width b to height h is at least 3: 2, gege but may be considerably larger in favor of a larger width.
  • the front end portions 14 has a square cross section, the opposite end-side end portion 15 has a rectangular cross-section, which is formed less flat than in the central portion 13, so that the ratio of width to height of the end portion 15 is smaller than in the central portion thirteenth
  • this different cross-sectional geometry manifests itself in the flat central portion 13 and slightly thicker end-side end portions 14 and 15, wherein the one end-side end portion 14 due to the square cross-sectional geometry has a greater height than the opposite end-side end portion 15 with rectangular, non-square cross-section. Since the front end portions 14 and 15 are made by forming the conductor, also the front end portions 14 and 15 have the same cross-sectional area as the central portion thirteenth
  • the transition 16 between the one end-side end portion 14 and the central portion 13 is shown in an enlarged view.
  • the transition 16 with respect to the longitudinal axis of the conductor at an angle ⁇ , which is a maximum of 75 °.
  • the angle ⁇ is about 45 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

Moteur électrique qui comporte un conducteur électrique pour l'apport de courant, connecté à une pièce de contact se trouvant en contact avec une pièce structurale du moteur électrique. Le conducteur présente dans un segment médian une section transversale rectangulaire.
EP10747042A 2009-08-28 2010-08-27 Moteur électrique, en particulier moteur de démarreur pour un moteur à combustion interne Withdrawn EP2471161A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009028989A DE102009028989A1 (de) 2009-08-28 2009-08-28 Elektromotor, insbesondere Startermotor für einen Verbrennungsmotor
PCT/EP2010/062560 WO2011023799A2 (fr) 2009-08-28 2010-08-27 Moteur électrique, en particulier moteur de démarreur pour un moteur à combustion interne

Publications (1)

Publication Number Publication Date
EP2471161A2 true EP2471161A2 (fr) 2012-07-04

Family

ID=43495063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10747042A Withdrawn EP2471161A2 (fr) 2009-08-28 2010-08-27 Moteur électrique, en particulier moteur de démarreur pour un moteur à combustion interne

Country Status (6)

Country Link
US (1) US20120228971A1 (fr)
EP (1) EP2471161A2 (fr)
CN (1) CN102625975B (fr)
DE (1) DE102009028989A1 (fr)
IN (1) IN2012DN01550A (fr)
WO (1) WO2011023799A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012015350A1 (de) * 2012-08-06 2014-02-06 Auto-Kabel Management Gmbh Kraftfahrzeugenergieleitung mit einem Fremdstartstützpunkt
DE102024103943A1 (de) * 2024-02-13 2025-08-14 Mahle International Gmbh Elektrische Maschine, Verfahren zur Herstellung eines Abflachungsabschnitts an einer Spule für eine elektrische Maschine sowie eine fremderregte elektrische Synchronmaschine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1174454A (en) * 1967-08-01 1969-12-17 Head Braiding Ltd Improvements in or relating to the Flexible Electrical Connections used in or on Electro-Chemical Machining Equipment and the Like.
FR2133208A1 (fr) * 1971-04-13 1972-11-24 Unelec
US4425519A (en) * 1983-04-19 1984-01-10 General Electric Company Crack resistant armor termination for pole face winding bars
FR2568066B1 (fr) * 1984-07-17 1988-04-29 Paris & Du Rhone Protection contre l'echauffement pour demarreur electrique avec moteur a aimants permanents
DE3539851A1 (de) 1985-11-09 1987-05-14 Bosch Gmbh Robert Elektrische maschine, insbesondere fuer andrehvorrichtungen von brennkraftmaschinen
EP1366557B1 (fr) * 2001-03-09 2009-12-02 TEMIC Automotive Electric Motors GmbH Structure de bobinage pour une machine electrique et procede de fabrication d'une structure de bobinage pour une machine electrique
US7262537B2 (en) * 2002-07-19 2007-08-28 Hamilton Sundstrand Corporation Electric motor and generator component having a plurality of windings made from a plurality of individually conductive wires
JP4878002B2 (ja) * 2006-07-06 2012-02-15 株式会社日本自動車部品総合研究所 電磁機器
US20100026132A1 (en) * 2008-07-31 2010-02-04 Denso Corporation Stator for rotating electric machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011023799A2 *

Also Published As

Publication number Publication date
DE102009028989A1 (de) 2011-03-03
CN102625975B (zh) 2015-08-19
WO2011023799A2 (fr) 2011-03-03
US20120228971A1 (en) 2012-09-13
IN2012DN01550A (fr) 2015-06-05
CN102625975A (zh) 2012-08-01
WO2011023799A3 (fr) 2011-04-28

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