EP2656453A1 - Ensemble de balais pour machine électrique - Google Patents

Ensemble de balais pour machine électrique

Info

Publication number
EP2656453A1
EP2656453A1 EP11793792.0A EP11793792A EP2656453A1 EP 2656453 A1 EP2656453 A1 EP 2656453A1 EP 11793792 A EP11793792 A EP 11793792A EP 2656453 A1 EP2656453 A1 EP 2656453A1
Authority
EP
European Patent Office
Prior art keywords
brush
power supply
supply element
brushes
recesses
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.)
Granted
Application number
EP11793792.0A
Other languages
German (de)
English (en)
Other versions
EP2656453B1 (fr
Inventor
Michael Bayer
Ralf OLSCHNER
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
Priority to PL11793792T priority Critical patent/PL2656453T3/pl
Publication of EP2656453A1 publication Critical patent/EP2656453A1/fr
Application granted granted Critical
Publication of EP2656453B1 publication Critical patent/EP2656453B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/38—Brush holders
    • H01R39/383—Brush holders characterised by the electrical connection to the brush holder
    • 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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
    • H01R13/7137—Structural association with built-in electrical component with built-in switch the switch being a safety switch with thermal interrupter
    • 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
    • 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
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/10—Safety devices not otherwise provided for

Definitions

  • the invention relates to a brushing apparatus for an electric machine, in particular for a starter of an internal combustion engine, according to the type of independent
  • DC voltage source and the brushes of the other polarity are connected via a common external lead to the positive pole of the DC voltage source.
  • the brushes are each held and guided in a brush holder, which in turn is attached to a brush holder made of electrically conductive material, via which the brushes connected to the negative pole of a DC voltage source are simultaneously electrically contacted.
  • the positive potential brushes are contacted in common via a power supply element, which in turn is locked to the brush bags and at the same time forms a device for reducing heat dissipation.
  • the brush apparatus for an electric machine according to the invention with the features of the independent claim has the advantage that in case of overload of the machine, for example by too long operation of a
  • the power supply element on two brushes ensures that it is held securely to the brushes until it melts, and a short circuit to parts of the other polarity
  • Such a power supply element can be fastened in a particularly simple manner with its inner edge of the ring at correspondingly shaped detents of the brush holder arranged in the same radial position, wherein the arrangement of the recesses
  • Feeding element when melting remains locked on both sides still in two brush bags, so that short circuits are avoided to grounded parts of the machine with certainty.
  • a material used with respect to the other, current-carrying parts of the machine increased resistivity which is suitably in the range between 0.04 and 0.2 ohm * mm 2 / m.
  • the material is preferably a steel with the technical name "Band EN 10152-DC04 + ZE75 / 75AO" with a thickness of 1.2 mm
  • Material of the power supply element should also be greater than that of copper and preferably have a value of less than or equal to 4 ⁇ 10 -3 ⁇ 1 / ⁇ .
  • Another advantageous feature of the material for the Power supply element has a thermal conductivity of 10 to 150 W / mK.
  • power supply according to the invention is also possible with a four-pole machine.
  • the polarity of the power supply element and an electrically conductive brush support plate can be reversed in principle.
  • Figure 1 is a schematically illustrated partial section of a machine in the region of
  • Figure 2 is a perspective view of a
  • FIG. 1 shows a longitudinal section through the brush apparatus 12 of an electric machine 10. Here, two brushes 13 and 14 of the brush apparatus are visible, which are pressed by a spring, not shown, against the commutator 20.
  • the brush holder 22 is fixed to an electrically conductive brush plate 30, which in turn is attached to the commutator-side bearing cap 31 of the pole housing 11.
  • the mechanical connection of the brush holder 23 with the bearing cap 31 is carried out in the same manner as the locking of the brush holder 22 via an undercut with a projection 32 on the brush plate 30 and a groove 34 on the brush bags 22 and 23rd
  • the brushes 13 and 14 in the section according to Figure 1 are diametrically opposite to the commutator and have
  • the lying on negative potential brush 14 is connected via a strand 33 with the electrically conductive brush plate 30 and via this with the lying to ground bearing cap 31.
  • annular power supply element 36 whose
  • Brush quiver is mechanically connected thereto by being in recesses 37 on the brush boxes 32 and 33rd
  • Power supply element 36 secured to the brush bags, so that in the case of melting the
  • Figure 2 shows a perspective view of the
  • FIG. 2 shows in addition to the representation in FIG. 1 the connection of the positive pole of a not shown
  • Power supply element 36 is connected.
  • the pigtail 38 or the busbar 39 are passed through a rubber-elastic cover 48, which closes the passage opening of the pigtail 38 and / or the bus bar 39 sealingly to the pole housing 11, not shown here.
  • the busbar 39 is in the area 46 with the
  • Power supply element 36 welded.
  • Power supply rail 36 are indicated by dashed lines.
  • the junction of a pigtail 40 from a negative brush 14 on the brush plate 30 is indicated at 52.
  • the power supply element 36 is indicated by dashed lines.
  • the preferred polarity including the contacting of a positive brush with the power supply element, in the embodiment, the contact 50 of the connected to the positive terminal of the voltage source brush 13.
  • the terminal 46 of the outer lead 38.39 to the power supply element 36 also between the recesses 54 positioned.
  • Embodiment according to Figure 2 an arrangement with six brushes 13,14 is shown in a six-pole electric machine, wherein the individual brushes are each uniformly spaced at an angle of 60 ° from each other.
  • the arrangement of the serrated recesses 54 is made so that they enclose an angle greater than 60 ° and laterally outside the cam 35 lie with the recesses 37 in which the annular
  • the shape of the recesses 54 is arbitrary, in particular they can also be groove-shaped or round and optionally also on the inner diameter or within the
  • Power supply element may be arranged.
  • Essential is a suitable reduction of the cross section of the
  • the reduced width dl of the lead-through element with 5.5 mm was measured with good success compared to the unreduced width d2 of 8.0 mm with a material thickness of 1.2 mm one
  • Power supply element 36 made of strip steel. Further,
  • Power supply element 36 are a resistivity of 0.04 to 0.2 ohm * mm 2 / m, a resistance temperature coefficient of greater than or equal to 4 ⁇ 10 -3 ⁇ 1 / ⁇ and a thermal conductivity of 10 to 150 W / m * K.
  • Proposed design of the power supply element 36 is achieved that on the power supply element on the one hand a fuse is formed and on the other hand sufficient area to reduce the heating of the live parts is created inside the machine, so that external parts are no longer heated to a dangerous level.
  • the pigtail 33 of the trapped between the recesses 54 plus brush 13 also heats up very strong and is usually melted with, so that the contact with ground is finally interrupted.

Landscapes

  • Motor Or Generator Current Collectors (AREA)

Abstract

L'invention concerne un ensemble de balais pour une machine électrique (10), en particulier pour un démarreur d'un moteur à combustion interne, comportant au moins deux paires de balais (13, 14), un nombre de porte-balais (22, 23) qui correspond au nombre des balais et qui est fixé sur une plaque porte-balais (30). L'ensemble de balais possède une ligne d'alimentation extérieure (38, 39) et des alimentations intérieures (33, 36) des balais (13, 14). Les alimentations intérieures d'une polarité possèdent un élément conducteur (36) qui est fixé sur les porte-balais (22, 23) et qui présente des ouvertures (54) afin d'augmenter localement la résistance électrique et de former un fusible. Selon l'invention, au moins deux ouvertures (54) sont disposées sur l'élément conducteur (36) de manière à avoir en direction périphérique entre les ouvertures deux balais (13, 14) de polarité opposée y compris les éléments de contact (50) d'un balai (13) avec l'élément conducteur (36), ainsi que le raccordement (46) de la ligne d'alimentation extérieure (38, 39) avec l'élément conducteur.
EP11793792.0A 2010-12-21 2011-12-08 Ensemble de balais pour machine électrique Active EP2656453B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11793792T PL2656453T3 (pl) 2010-12-21 2011-12-08 Aparat szczotkowy dla maszyny elektrycznej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010063688A DE102010063688A1 (de) 2010-12-21 2010-12-21 Bürstenapparat für eine elektrische Maschine
PCT/EP2011/072159 WO2012084526A1 (fr) 2010-12-21 2011-12-08 Ensemble de balais pour machine électrique

Publications (2)

Publication Number Publication Date
EP2656453A1 true EP2656453A1 (fr) 2013-10-30
EP2656453B1 EP2656453B1 (fr) 2015-02-25

Family

ID=45218731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11793792.0A Active EP2656453B1 (fr) 2010-12-21 2011-12-08 Ensemble de balais pour machine électrique

Country Status (6)

Country Link
EP (1) EP2656453B1 (fr)
CN (1) CN103384948B (fr)
DE (1) DE102010063688A1 (fr)
HU (1) HUE025516T2 (fr)
PL (1) PL2656453T3 (fr)
WO (1) WO2012084526A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013222629A1 (de) * 2013-11-07 2015-05-07 Robert Bosch Gmbh Kommutierungseinrichtung in einer elektrischen Maschine
DE102014225385A1 (de) 2014-12-10 2016-06-16 Robert Bosch Gmbh Kommutierungseinrichtung für eine elektrische Maschine
DE102014225391A1 (de) 2014-12-10 2016-06-16 Robert Bosch Gmbh Kommutierungseinrichtung für eine elektrische Maschine
DE102014225514A1 (de) 2014-12-11 2016-06-16 Robert Bosch Gmbh Kommutierungseinrichtung für eine elektrische Maschine
DE102014225520A1 (de) 2014-12-11 2016-06-30 Robert Bosch Gmbh Kommutierungseinrichtung für eine elektrische Maschine
DE102015225762A1 (de) 2015-12-17 2017-06-22 Robert Bosch Gmbh Elektrische Sicherungsvorrichtung
DE102016225984A1 (de) * 2016-12-22 2018-06-28 Robert Bosch Gmbh Bürstenhalter für eine elektrische Maschine
DE102017215253A1 (de) 2017-08-31 2019-02-28 Seg Automotive Germany Gmbh Elektrische Sicherungsvorrichtung
DE102017217337A1 (de) 2017-09-28 2019-03-28 Seg Automotive Germany Gmbh Verfahren zur Betätigung einer Sicherungseinrichtung einer elektrischen Maschine, sowie elektrische Maschine mit einer Sicherungseinrichtung
DE102017217335A1 (de) 2017-09-28 2019-03-28 Seg Automotive Germany Gmbh Verfahren zum Auslösen einer Sicherungseinrichtung einer elektrischen Maschine, sowie elektrische Maschine mit einer Sicherungseinrichtung
DE102017217333A1 (de) 2017-09-28 2019-03-28 Seg Automotive Germany Gmbh Elektrische Maschine mit einem elektrischen Leiter und mit einer elektrischen Sicherungseinrichtung
JP7354849B2 (ja) * 2020-01-22 2023-10-03 株式会社デンソー 直流モータ

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10041822A1 (de) * 2000-08-25 2002-03-07 Bosch Gmbh Robert Elektrische Startvorrichtung für Brennkraftmaschinen mit Überlastschutz
JP4443979B2 (ja) * 2003-09-12 2010-03-31 株式会社デンソー スタータ
FR2872642B1 (fr) * 2004-06-30 2006-09-01 Valeo Equip Electr Moteur Circuit d'alimentation d'un balai d'un moteur electrique, notamment d'un demarreur de vehicule automobile
FR2939570B1 (fr) * 2008-12-09 2013-01-18 Valeo Equip Electr Moteur Dispositif a balais pour demarreur de vehicule automobile.
DE102009002725A1 (de) 2009-04-29 2010-11-04 Robert Bosch Gmbh Bürstenapparat für eine elektrische Maschine sowie elektrische Maschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012084526A1 *

Also Published As

Publication number Publication date
CN103384948B (zh) 2015-12-09
EP2656453B1 (fr) 2015-02-25
DE102010063688A1 (de) 2012-06-21
HUE025516T2 (hu) 2016-05-30
CN103384948A (zh) 2013-11-06
WO2012084526A1 (fr) 2012-06-28
PL2656453T3 (pl) 2015-07-31

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