EP2286492B1 - Bürstenhaltereinrichtung und verwendung dafür zur herstellung eines kraftfahrzeuganlassers - Google Patents

Bürstenhaltereinrichtung und verwendung dafür zur herstellung eines kraftfahrzeuganlassers Download PDF

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Publication number
EP2286492B1
EP2286492B1 EP09731475.1A EP09731475A EP2286492B1 EP 2286492 B1 EP2286492 B1 EP 2286492B1 EP 09731475 A EP09731475 A EP 09731475A EP 2286492 B1 EP2286492 B1 EP 2286492B1
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EP
European Patent Office
Prior art keywords
brush
brush holder
end piece
brushes
starter
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.)
Active
Application number
EP09731475.1A
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English (en)
French (fr)
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EP2286492A1 (de
Inventor
Maximilien Gentil
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.)
Valeo Equipements Electriques Moteur SAS
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Valeo Equipements Electriques Moteur SAS
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Publication of EP2286492A1 publication Critical patent/EP2286492A1/de
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Publication of EP2286492B1 publication Critical patent/EP2286492B1/de
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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
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/38—Brush holders
    • H01R39/40—Brush holders enabling brush movement within holder during current collection

Definitions

  • the present invention relates to the field of starters for a motor vehicle.
  • the invention relates to a brush holder device.
  • a motor starter brush holder is mounted on the starter rotor shaft so as to cooperate with an electrical collector integral with the rotor shaft.
  • the brushes In the brush holder devices for a vehicle starter, it is known to increase the number of brushes for high power starters, in order to reduce the electrical contact resistance or to limit the individual wear of the brushes and thus prolong the duration starter life.
  • the brushes generally even in number, are housed in respective brush holders which are arranged on a brush support plate of the brush holder device. With the increase in the number of brushes, there then arises the problem of the electrical connections of these brushes respectively, on the one hand, to the rotor supply circuit (for brushes of positive polarity for example), and, on the other hand on the other hand, to the vehicle ground (for brushes of negative polarity, for example).
  • the brushes are each placed in a brush holder fixed on one side of the brush support plate, and the central portion of the latter comprises an orifice through which the assembly formed by this plate, brush holders and brushes is mounted around the starter rotor shaft.
  • the following will be referred to in the following as the front face of the brush support plate on which the brush holders are fixed, and the rear face of the opposite face of this plate.
  • the support plate of brooms conventionally a disc, has a set of through holes and has, on its rear face, a housing for receiving a braid, a ring or a sector of copper ring to which the brushes are individually electrically connected and which electrically interconnects all or part of the brushes of the same polarity.
  • One or more inter-brush electric bridges are thus produced, which simplifies the connection of the brushes thus electrically connected to each other with the corresponding electrical circuit.
  • Such an arrangement however results in a certain complexity in the production of the support plate of brushes, which increases the cost. It also induces additional space in the rear face of this plate, which may be incompatible with specific constraints of space in the space allocated to the starter, which is increasingly reduced on motor vehicles.
  • WO 02/50981 A1 describes the features of the preamble of claim 1.
  • the object of the invention is to propose a device making it possible to set up such inter-brush bridges in a simple, inexpensive and applicable manner regardless of the configuration of the starter and the brush support plate in order to achieve a standardization generating additional savings in the manufacture of brush holders.
  • the invention relates to a brush holder device for a motor vehicle starter comprising a plate supporting a set of brush holders.
  • each of the brush holders accommodates, at its outer end opposite its end, through which a broom which it receives is placed in electrical contact with a collector, a tip made of a dielectric material and comprising means for maintaining a conductive element for electrically connecting the blade with at least one separate brush, of similar polarity, received in a similar brush holder fixed remote on the plate.
  • This tip fulfills a shutter function of one end of the corresponding brush holder which is fixed on a support plate brushes.
  • the holding means are advantageously arranged in such a way that the inter-brush bridge is on the same side of the brush support plate as that on which the brush holders are fixed, that is to say, to use the denomination mentioned above, on the side of the front of this deck.
  • these holding means are advantageously configured, according to the invention, to hold the inter-brush bridge at least in its part closest to the outer edge of the brush support plate.
  • the inter-brush bridge may be in the form of a ring, a ring sector, or a set of ring sectors of a material driver (by example of copper) electrically interconnecting all the brushes of the same polarity or only a part of them. More generally, the inter-brush bridge may be in the form of a continuous conductive element interconnecting all the brushes of the same polarity, or a set of elementary sectors electrically connecting together all or part of the brushes of the same polarity.
  • the tip is made of a dielectric material, for example a polymeric material.
  • the end closed by the tip is the end of the receiving housing of the brush in the brush holder opposite to the end of the same housing by which the blade can come into contact with a manifold. More specifically, the tip seals the end of the brush receiving housing closest to a protective housing, or cylinder head, surrounding the assembly consisting of the support plate brushes, brush holders and brushes.
  • a protective housing or cylinder head
  • the different brush holders are arranged radially. on this disc, and the tip closes the end located on the outer side thereof, periphery of the assembly.
  • the tip then performs an additional function of electrical insulation between the different brushes and their environment, specifically between the different brushes and the aforementioned protective housing. To this function is also added a function of mechanical isolation between the brush and the protective casing, the tip preventing, by its presence, any dust from the wear of the brush to come into contact with the housing that they could then pollute or on which they could constitute sites of initiation of possible electric arcs.
  • the holding means that comprises the endpiece comprise at least one tongue that isolates electrically and mechanically while holding the inter-brush bridge element inserted into this endpiece. More specifically, the tip comprises a portion substantially forming a U, a branch of which is formed by this isolation tab.
  • another of the branches of this U carries out the electrical isolation between the inter-brush bridge and a protective casing of the assembly formed by the support plate of brushes, the brush holders and the brushes, or, more generally, between the inter-brush bridge and the external environment of the brush holder and its support plate.
  • the branches of this U can be configured in such a way that, when the end piece is put in place at the end of a brush holder and when the Brush support plate is placed around a rotor shaft, they are located in a plane substantially perpendicular to the axis of this shaft or in a plane substantially parallel thereto.
  • the tip of the brush holder device according to the invention is particularly suitable for the equipment brush holder very simple shapes, such as for example made by folding thin sheets, which allows significant cost reductions compared to brush holders made by molding plastics.
  • the nozzle of the device according to the invention can be realized in the form of a standard model used profitably on different types of motor vehicle starter.
  • the inter-brush bridge holding function is performed by a part of the tip different from that which is at the end of the brush holder and which ensures the electrical insulation of the brushes with regard to their environment. Since the shapes making it possible to ensure these different functions are thus distinct in each endpiece, the invention therefore makes it possible to reduce the variants of embodiments of the brush holder assemblies. This allows a further reduction in costs by standardizing the manufacture of assemblies receiving brushes and inter-brush bridges.
  • the tip of the device according to the invention allows the manufacture of the brush holder and that of the support plate brushes in any material, for example folded sheet, which leads to a further reduction in cost.
  • the Figures 1A and 1B present the brush holder device according to first and second embodiments, respectively.
  • the brush holder is shown mounted on a manifold 7 of the starter.
  • the manifold 7 is provided to be fixedly mounted on a rotor shaft (not shown) of the starter.
  • the rotor shaft is normally engaged in a through hole 2 shown in FIGS. Figures 1A , 1 B .
  • the brush holder device comprises a brush support plate 1 made in the form of a disk drilled at its center at the through orifice 2.
  • the plate 1 supports six brushes each inserted in a suitable housing provided in a holder. 3.
  • Brushes and brush holders are regularly distributed radially on the plate 1, and each of the brush holder 3 is open at its end closest to the orifice 2 to allow the electrical contact of the broom it accommodates. with the starter manifold.
  • each of the brush holders is made by folding a plate of thin sheet so as to form substantially an omega whose end branches are fixed on the plate 1.
  • Such an embodiment brings an additional advantage in that such a brush holder has a greater resistance to high temperatures, which is particularly advantageous especially for starters called to be frequently solicited during operation of the vehicle.
  • FIG. 1A and 1B it is also partially shown a protective housing or yoke 4 surrounding the brush holder device comprising the brush support plate 1, the brush holder 3 and the brushes.
  • an inter-brushing electrical bridge 5 interconnects all the brushes placed on the brush support plate 1.
  • This inter-brush bridge which is made of a material having a high electrical conductivity (preferably, but not exclusively, of copper), here takes the form of a rigid ring of a height of the order of a few millimeters electrically interconnecting all the brushes. It should however be noted that such an inter-brush bridge can take any form and electrically connect together all or part of the brushes placed on the plate 1.
  • the ring forming the inter-brush bridge 5 is deformed in two diametrically opposed zones (marks 50 on the Figures 1A and 1B ). These deformations are advantageously placed opposite two diametrically opposite orifices, designated by the marks 100 on the figure 1 . These orifices are formed in the support plate brush 1 to allow the passage of tie rods (not shown in the figures) which are used for mechanical assembly of the starter.
  • a tip designated by the reference numeral 6, closes one of the ends of each of the brush holders 3. More specifically, the tip 6 closes the peripheral end of the receiving housing of the blade in the brush holder, that is to say the one that is furthest from the through-orifice 2 through which the plate 1 allows passage of the starter rotor shaft. It thus constitutes a mechanical separation between the blade placed in the brush holder 3 and the protective casing 4. More generally, it mechanically separates the blade from its external environment at its end opposite the end intended to come into electrical contact with the blade. the starter manifold.
  • the tip 6 is preferably made of a dielectric material. It isolates well Also electrically the brush, including the protective casing 4. In an effort to reduce cost, it is for example made by injection / molding a plastic material for example based on polyamide.
  • a tip comprises a body 60 forming a housing 61 whose shape and dimensions are substantially identical to the shapes and dimensions of the cross section of the brush holder 3 at its end to which the tip is placed, so that the body 60 can simply be nested around this end.
  • a channel 62 extends inside the housing 61, in the same direction as the edges 610 of the latter, over a length of a few millimeters.
  • this channel accommodates a portion of a spring (not shown in the figures) placed at the rear of the broom spring to ensure, by its compression by the brush, maintaining the electrical contact between the latter and the starter manifold.
  • the body 60 of the tip 6 is substantially planar so as to bear on the front face of the brush support plate 1, on which the brush holders 3 are fixed.
  • One or the other of the first and second embodiments of the invention corresponding to the Figures 1A , 2 and 1 B , 3 is chosen according to the intended starter application. According to the embodiment chosen, the shape of the tip 6 at the end of the body 60 opposite its base 63, and the shape of the inter-brush bridge 5 are different, as is clear from the figures.
  • the tip 6 comprises, at the end of the body 60 opposite its base 63, a substantially forming a portion U which is oriented differently depending on whether it is the first or the second embodiment.
  • the branches of this U form the holding means mentioned above intended to retain all or part of the inter-brush bridge 5.
  • the branches of this U extend substantially parallel to the body 60 of the tip 6.
  • the legs of the U are disposed substantially perpendicular to the starter rotor shaft.
  • the branches of this U are arranged substantially perpendicularly to the axis of the blade. through hole 2.
  • the tip 6 is configured such that the legs of this U then extend substantially parallel to the axis of the through hole 2 when the tip 6 is placed at the end of the brush holder 3 fixed on the plate 1 and that the brush holder device is mounted in the starter.
  • the inter-brush bridge 5 or the inter-brush bridge element is inserted into the groove formed by the U-shaped part of the tip 6.
  • the branches of this U form a tongue, respectively. 64 and a tongue 65 extending from the body 60 of the tip 6 substantially over the entire width thereof, tabs which are interconnected by a tongue 66 of the same width which constitutes the bottom of the U.
  • the bridge inter-brush which is here in the form of a flat conductive ring, is thus maintained on at least three sides of its periphery, including at least, whatever the variant chosen, its nearest part of the outer edge of the plate 1 and its lower part. This allows both to ensure a correct and reliable maintenance over time of the inter-brush bridge, and to fulfill a guiding function during the establishment thereof.
  • the inter-brush bridge is in the form of a ring or flat ring portions whose dimension in the longitudinal direction of the collector is greater than its dimension in the transverse direction of this collector, it is sufficient, once the tips placed at the ends of each of the brush holder 3, to bring the inter-brush bridge in the upper part of the front face of the assembly formed by the plate 1, the brush holders 3 and the brushes and insert substantially parallel to the axis of the orifice 2 between the two tongues 64 and 65, which then constitute in its regard cooperating jaws.
  • the space separating the tabs 64 and 65, occupied by the bottom 66, is very slightly less than the thickness of the ring or the ring portions forming the inter-brush bridge, so that the elasticity natural material constituting the tip 6 allows a slight compression of this bridge on the three sides of its periphery by which it is in contact with the tip 6, thereby contributing to its maintenance while allowing a very simple implementation and fast.
  • the inter-brush bridge 5 is advantageously inserted substantially perpendicularly to the axis of the orifice 2 (thus radially) between the tongues 64 and 65.
  • the inter-brush bridge 5 for easy placement, it will be advantageous to put in place only part of the tips 6 on the brush holder 3, then to insert the inter-brush bridge, and finally to put in place the remaining bits to put said bridge in slight compression at its outer periphery to contribute to a more reliable maintenance.
  • the tabs 64 and 65 ensures, by the tabs 64 and 65 that it comprises, a reliable and durable maintenance of said bridge-inter brooms and a quick and easy installation of it.
  • the tabs 64 and 65, as well as the bottom 66 of the U-shaped part of the endpiece, also fulfill the functions of mechanical isolation and electrical insulation for the inter-brush bridge 5 with respect to, respectively, the carriers. brushes 3 and brushes housed therein and the protective casing or cylinder head 4. More generally, the nozzle thus makes, by the U-shaped portion that it comprises, a mechanical and electrical insulation of the inter-brush bridge 5 with regard to the whole of its environment.
  • the electrical connection between each brush and this bridge is achieved by means of, for example, conductive braids (not shown).
  • the tip also ensures, by its body 60, a mechanical and electrical insulation of the brush holder which it is associated with and the broom that it receives with regard to their external environment, and in particular, with regard to a protection casing 4.
  • a tip such as the tip 6 can be used to close the end of a brush holder even in the absence of inter-brush bridge, the height of the tongues 64 and 65 and the bottom 66 being, whatever the chosen variant, low (typically of the order of a few millimeters), and the shape 60 of the body of the tip 6 by which the latter is fitted on the end of the brush holder being independent of the shapes of the tongues 64 and 65 and from the bottom 66.
  • the tip can be used for any type of platinum brush holder and for any type of starter, which allows to reduce the costs by increasing the quantities of the makes the standardization and versatility of the starter production chains.
  • such a tip allows the realization of very simple brush support plates, for example by stamping thin sheet metal plates on which are then fixed the folded sheet plates forming the brush holder, thus allowing additional savings.
  • the shapes and dimensions of the inter-brush bridge 5 are not limited to the shapes and dimensions explained above.
  • the shapes and dimensions defined by the tabs of the U-shaped portion of the endpiece being directly connected, as described above, to the shapes and dimensions of this inter-brush bridge it follows that the U-shape and the dimensions of this part are not, either, exclusive, and that the invention also extends to any shape to simply maintain, at least in its closest part of the outer edge of the support plate brushes for a reliable and durable maintenance, all or part of an inter-brush electric bridge.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
  • Motor Or Generator Frames (AREA)

Claims (7)

  1. Bürstenhalteeinrichtung für Kraftfahrzeuganlasser, die eine Platte aufweist, die eine Einheit von Bürstenhaltern trägt, dadurch gekennzeichnet, dass jeder der Bürstenhalter an seinem externen Ende, das seinem Ende gegenüberliegt, an dem eine Bürste, die er aufnimmt, mit einem Sammler in elektrischen Kontakt gestellt wird, einen Ansatz (6) aufnimmt, der aus einem dielektrischen Werkstoff hergestellt ist, und Haltemittel eines leitenden Elements (5) aufweist, das dazu bestimmt ist, die Bürste elektrisch mit mindestens einer getrennten Bürste mit gleicher Polung, die in einem ähnlichen Bürstenhalter, der von der Platte entfernt befestigt ist, aufgenommen ist, elektrisch zu verbinden.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Haltemittel des Ansatzes dazu konfiguriert sind, das leitende Element auf derselben Seite einer Tragplatte wie auf der, auf der die Bürstenhalter auf der Platte platziert sind, zu halten.
  3. Vorrichtung nach dem einen oder dem anderen der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der Ansatz aus einem dielektrischen Werkstoff hergestellt ist und dass er einen Körper (60) aufweist, der eine Aufnahme zum Aufnehmen einer Bürste in einem Bürstenhalter am Ende dieses Letzteren aufweist, dem Ende gegenüberliegend, über welches die Bürste in dem Bürstenhalter aufgenommen ist, mit einem Sammler des Anlassers in elektrischen Kontakt gestellt wird.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Ansatz einen U-förmigen Teil aufweist, von dem ein Schenkel (64) den Bürstenhalter, den er ausrüstet, elektrisch und mechanisch von dem leitenden Element (5) isoliert und von dem ein Schenkel (65, 66) eine Bürste, die in dem Bürstenhalter aufgenommen ist, von einer Schutzverkleidung oder einem Zylinderkopf (4), die um die Einheit, die aus der Bürstenhalteplatte, den Bürstenhaltern und Bürsten des Anlassers gebildet ist, platziert ist, elektrisch und mechanisch isoliert.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass sich der U-förmige Teil des Ansatzes im Wesentlichen parallel zu dem Körper (60) des Ansatzes erstreckt.
  6. Ansatz nach Anspruch 4, dadurch gekennzeichnet, dass sich der U-förmige Teil des Ansatzes im Wesentlichen senkrecht zu dem Körper (60) des Ansatzes erstreckt.
  7. Bürstenhalteeinrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass jeder der Bürstenhalter in der Form eines Omega, das durch Falten eines dünnen Metallblechs erzielt wird, hergestellt ist.
EP09731475.1A 2008-06-06 2009-06-03 Bürstenhaltereinrichtung und verwendung dafür zur herstellung eines kraftfahrzeuganlassers Active EP2286492B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0853784A FR2932318B1 (fr) 2008-06-06 2008-06-06 Embout de porte-balai et son application a la realisation d'un demarreur pour vehicule automobile
PCT/FR2009/051045 WO2010001006A1 (fr) 2008-06-06 2009-06-03 Dispositif de porte-balai et son application a la realisation d'un demarreur pour vehicule automobile

Publications (2)

Publication Number Publication Date
EP2286492A1 EP2286492A1 (de) 2011-02-23
EP2286492B1 true EP2286492B1 (de) 2013-07-10

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Application Number Title Priority Date Filing Date
EP09731475.1A Active EP2286492B1 (de) 2008-06-06 2009-06-03 Bürstenhaltereinrichtung und verwendung dafür zur herstellung eines kraftfahrzeuganlassers

Country Status (8)

Country Link
EP (1) EP2286492B1 (de)
KR (1) KR20110033120A (de)
CN (1) CN102057543B (de)
BR (1) BRPI0911800A2 (de)
ES (1) ES2428330T3 (de)
FR (1) FR2932318B1 (de)
RU (1) RU2010153251A (de)
WO (1) WO2010001006A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2939570B1 (fr) * 2008-12-09 2013-01-18 Valeo Equip Electr Moteur Dispositif a balais pour demarreur de vehicule automobile.
KR101144907B1 (ko) * 2010-11-05 2012-05-14 발레오전장시스템스코리아 주식회사 스타트 모터의 브러시 홀더 어셈블리
DE102012203810A1 (de) * 2012-03-12 2013-09-12 Robert Bosch Gmbh Elektrische Maschine und Verfahren zur Herstellung einer elektrischen Maschine
US20150076936A1 (en) 2013-08-09 2015-03-19 Black & Decker Inc. Brush assembly having improved brush profile for an electric motor
US9866078B2 (en) 2014-01-29 2018-01-09 Black & Decker Inc. Brush assembly mount
US9991770B2 (en) 2013-08-09 2018-06-05 Black & Decker Inc. Spring post for brush card for a power tool
FR3013168A1 (fr) * 2013-11-08 2015-05-15 Valeo Equip Electr Moteur Porte-balais de machine electrique pour vehicule et demarreur correspondant
CN103811963B (zh) * 2014-03-12 2015-09-30 四川城际轨道交通材料有限责任公司 电力机车接地装置的消弧方法
DE102016226120A1 (de) * 2016-12-22 2018-06-28 Seg Automotive Germany Gmbh Elektrische Maschine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1454213A (fr) * 1965-11-15 1966-07-22 Philips Nv Dispositif de fermeture d'un porte-balai
WO2002050981A1 (fr) * 2000-12-21 2002-06-27 Valeo Equipements Electriques Moteur Machine electrique a ensemble porte-balais et procede d'assemblage d'une machine electrique pourvue d'un tel ensemble
JP3771836B2 (ja) * 2001-12-11 2006-04-26 三菱電機株式会社 車両用交流発電機のブラシ摩耗検出システム
CN2785236Y (zh) * 2005-04-20 2006-05-31 张式银 一种改进的马达碳刷座结构
US7466056B2 (en) * 2006-10-06 2008-12-16 Remi International, Inc Dynamoelectric machine brush holder assembly and method

Also Published As

Publication number Publication date
CN102057543A (zh) 2011-05-11
BRPI0911800A2 (pt) 2015-10-06
CN102057543B (zh) 2013-10-30
KR20110033120A (ko) 2011-03-30
RU2010153251A (ru) 2012-07-20
FR2932318A1 (fr) 2009-12-11
FR2932318B1 (fr) 2015-11-13
EP2286492A1 (de) 2011-02-23
ES2428330T3 (es) 2013-11-07
WO2010001006A1 (fr) 2010-01-07

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