EP2313951A2 - Dispositif a balais pour demarreur de vehicule automobile - Google Patents
Dispositif a balais pour demarreur de vehicule automobileInfo
- Publication number
- EP2313951A2 EP2313951A2 EP09784488A EP09784488A EP2313951A2 EP 2313951 A2 EP2313951 A2 EP 2313951A2 EP 09784488 A EP09784488 A EP 09784488A EP 09784488 A EP09784488 A EP 09784488A EP 2313951 A2 EP2313951 A2 EP 2313951A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- brush holder
- holder assembly
- support
- cages
- brushes
- 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
Links
- 239000007858 starting material Substances 0.000 title claims abstract description 17
- 238000005192 partition Methods 0.000 claims description 11
- 244000007853 Sarothamnus scoparius Species 0.000 claims description 6
- 238000002788 crimping Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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
- H01R39/385—Means for mechanical fixation of 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
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for vehicles
Definitions
- the invention relates in particular to a brush device for a rotating electrical machine, in particular a motor vehicle starter or alternator.
- No. 4,754,184 discloses an electric machine brush device comprising a base plate and four brush holders mounted on the base plate while being spaced from one another along a circumference of the base plate. . Each broom holder receives a single broom.
- the patent KR 430 503 also describes a brush device for a rotating electrical machine.
- the wear of the brushes is related to the phenomenon of electro-erosion and the speed of the electro-erosion is a function of the intensity of the electric current passing in the brush. It is possible to reduce this electric current by increasing the number of aligned brushes in contact with the collector of the rotor, which allows to extend the life of the brushes.
- the invention aims to propose a new brush device.
- the invention thus relates to a brush device for a rotating electrical machine, in particular a motor vehicle starter, this device comprising at least two brushes arranged in parallel to rub against a commutator of the rotating electrical machine during operation of the -this.
- the invention also relates to a brush device for a rotary electrical machine, in particular a motor vehicle starter, this device comprising:
- a brush holder assembly comprising at least two stands secured to each other and each arranged to receive one of said brushes
- the brush holder assembly can be mounted simply on the support, in particular with a reduced number of operations.
- the two brushes of the brush holder assembly are arranged substantially aligned on a straight line parallel to an axis of rotation of the manifold.
- the brush holder assembly is made from a single piece. If desired, the brush holder assembly is made by molding or, alternatively, preferably by cutting and folding a sheet.
- the brush holder assembly is made from at least two parts assembled, for example by welding or gluing, each piece forming in particular one of the cages of the brush holder assembly.
- the brush holder assembly is arranged to be mounted on the support by snapping or crimping.
- the brush holder assembly may be arranged so that, after mounting on the support, the two stands are disposed substantially on either side of the support.
- the two cages of the brush holder assembly are interconnected by a hinge.
- the two cages of the brush holder assembly form a common housing for receiving the two brushes and, after assembly of the brush holder assembly on the support, the two brushes of this brush holder assembly are separated from each other by the support.
- the brush holder assembly is arranged so that, after mounting on the support, the two stands are arranged on the same side of the support.
- the brush holder assembly comprises at least one partition wall of the brushes, this partition being in particular common to both cages.
- One of the cages of the brush holder assembly may comprise a side wall connecting to a first substantially radial edge of this partition and the other of the cages of the assembly comprises a side wall connecting to a second substantially radial edge. of the partition, the first and second radial edges of the partition being preferably substantially parallel.
- the invention also relates to a brush device for a rotary electrical machine, in particular a motor vehicle starter, this device comprising at least two brushes arranged to rub on a commutator of the rotating electrical machine during operation thereof. These brushes being arranged in contact with one another and substantially aligned with a line parallel to an axis of rotation of the collector.
- the brushes arranged contiguously can have a small footprint, which can allow to have a relatively compact machine.
- the device comprises:
- a brush holder assembly comprising at least two cages each arranged to receive one of said brushes
- This brush holder assembly is for example made from a single piece.
- the brush holder assembly is made from two parts assembled, for example by welding or gluing, each piece forming in particular one of the cages of the brush holder assembly.
- the brush holder assembly may be arranged so that, after mounting on the support, the two stands are arranged substantially on either side of the support.
- the support may comprise a recess between the two cages of the brush holder assembly so that the brushes come into contact with each other through the recess.
- the support comprises an electrically conductive layer interposed between two electrically insulating layers.
- each cage receives a spring on which the broom placed in this cage.
- the invention also relates to a rotating electrical machine, including starter or alternator of a motor vehicle, comprising a brush device as defined above.
- the invention also relates to a method for manufacturing a brush device as defined above, the method comprising the following steps:
- FIG. 1 represents, schematically and partially, a starter according to an exemplary implementation of the invention
- - Figures 2 to 6 show, schematically and partially, different elements of a brush device according to an exemplary implementation of the invention, to equip the starter of the figurel
- FIGS. 7 to 9 illustrate, schematically and partially, brush holders respectively according to three other examples of implementation of the invention.
- FIG. 10 and 1 1 show, schematically and partially, a brush device according to another embodiment of the invention
- FIG. 12 to 15 illustrate, schematically and partially, a brush device according to another embodiment of the invention.
- FIG. 16 to 19 show, schematically and partially, a brush device according to yet another embodiment of the invention.
- FIG. 1 shows a starter 1 for an internal combustion engine of a motor vehicle.
- This starter 1 comprises, firstly, a rotor 2, also called armature, rotatable about an axis X, and secondly, a stator 3, also called inductor, around the rotor 2.
- This stator 3 comprises a yoke on which are fixed one or more pole pieces 4 for the introduction of an inductor winding 5.
- the rotor 2 comprises a rotor body 7, and an armature winding 8 wound in notches of the rotor body 7.
- This armature winding 8 forms, on either side of the rotor body 7, a front bun 9 and a rear bun 10.
- the rotor 2 is provided at the rear with a collector 12 comprising a plurality of contact pieces electrically connected to the conductive elements formed in the example in question by wires of the armature winding 8.
- a group of brushes 13 of a brush device 50 shown very schematically in FIG. 1, is provided for the electrical supply of the armature winding 8, at least one of the brushes 13 being connected to the starter motor. 1 and at least one other of the brushes 13 being connected to a contactor 17.
- the brushes 13 rub on the collector 12 when the rotor 2 is rotating.
- the brushes 13 are made for example based on carbon.
- the starter 1 further comprises a launcher 19 slidably mounted on a drive shaft 18 and drivable in rotation about the X axis by the rotor 2.
- a gear reduction unit 20 may be interposed between the rotor 2 and the drive shaft 18, in a manner known per se.
- the launcher 19 comprises a driving element formed by a pinion 21 and intended to engage on a drive member 33 of the combustion engine.
- This drive member is for example a ring gear.
- the launcher 19 further comprises a freewheel 22 and a pulley washer 23 defining between them a groove 24 for receiving the end 25 of a fork 27.
- This fork 27 is made for example by molding a plastic material.
- the fork 27 is actuated by the switch 17 to move the launcher 19 relative to the drive shaft 18, along the X axis, between a first position in which the launcher 19 drives the combustion engine via the pinion 21, and a second position in which the launcher 19 is disengaged from the ring gear 33.
- the contactor 17 comprises a terminal 29 connected via an electrical connection element, in particular a wire 30, to a power supply of the vehicle such as a battery 26.
- the device 50 comprises a support 51 provided with an electrically conductive plate 52, for example made of steel, and having an annular shape perpendicular to the axis X.
- the plate 52 comprises, on one side 53, two recesses 54 diametrically opposed.
- Each recess 54 receives an insulating insert 55, made for example of thermoset plastic material.
- This insert 55 comprises two orifices 57 making it possible to fix it on the plate 52 by means of rivets.
- the thickness of the insert 55 is substantially equal to the depth of the recess 54.
- the insert 55 serves to mount a brush holder assembly 60 on the support 51.
- This brush holder assembly 60 comprises two cages 61 and 62 each arranged to receive a brush 13.
- the brush device 50 comprises four brush holder assemblies 60 each carrying a pair of brushes 13.
- Two of the assemblies 60 are mounted on the support 51 by means of insulating inserts 55, the brushes 13 of these assemblies then being connected to a power supply.
- the other two sets 60 are fixed directly on the conductive plate 52, the brushes of these sets 60 then being, in this example, grounded.
- each brush holder assembly 60 is made in one piece, in particular by cutting and folding a steel sheet.
- the cages 61 and 62 are integral with one another, which makes it easier to mount the assembly 60 either on the insulating insert 55 or on the plate 52.
- the two stands 61 and 62 are connected to each other by a frontal hinge 65.
- the cages 61 and 62 are slightly pushed away from each other. the other by action of the hinge 62.
- the hinge 62 is arranged to engage a radially inner edge 58 of the support 51.
- Each cage 61; 62 comprises a substantially cylindrical wall 67 of radial axis Y perpendicular to the axis X and having a substantially rectangular section.
- the section of the wall 67 is chosen to substantially match the shape of the brush 13 corresponding.
- the wall 67 is slotted on one side and has a bulge 69 on an opposite side for the passage of a spring.
- Cages 61 and 62 are open at both radial ends.
- Each brush holder assembly 60 comprises on one side opposite the hinge 65 two crimping tabs 70, each being connected to a cage 61; 62 (see in particular Figure 5).
- the brush holder assembly 60 is thus fixed on the insert 55.
- This assembly obtained is then placed and fixed on the plate 52, in a recess 54, by riveting.
- the recess 54 of the plate 52 is provided with a recess 72 to allow the cage 62 to pass (see in particular FIG. 2).
- the plate 52 comprises a slot 73 for the passage of the crimping tabs 70 (see Figures 2 and 3 in particular).
- the brush holder assemblies 60 can be easily attached to the support 51.
- the cages 61 and 62 define separate compartments for the brushes.
- the brush device 50 may comprise a brush holder assembly 80 which initially has a common housing 81 for the two brushes 13 to implement.
- This comprises a conductive layer 87 interposed between two outer insulating layers 86.
- the brush holder assembly 80 comprises, on one side, two lugs 88 to be riveted on the support 85.
- the assembly 80 also comprises slots 89, on each side, for sliding insertion in the plane of the support 85 , this assembly 80 on this support 85.
- the assembly 80 further comprises, at the rear, snap elements 90 such as two elastically deformable tabs, able to be applied on a rear edge 91 of the support 85 to prevent the removal of this assembly 80.
- snap elements 90 such as two elastically deformable tabs, able to be applied on a rear edge 91 of the support 85 to prevent the removal of this assembly 80.
- the assembly 80 is made in one piece.
- FIG. 8 shows a brush holder assembly 95 differing from the assembly 80 previously described in that it comprises two lugs 96 arranged to be applied on either side of the support 85 in order to promote the mounting stability in the support plane 85.
- the brush holder assembly comprises two latching tabs 90.
- the brush holder assembly may comprise a single locking lug 90, as illustrated in FIG. 9.
- the cages 61 and 62 of the brush holder assembly are arranged with on either side of support 51 or 85.
- FIGS. 10 and 11 show a brush device 100 comprising a support 101 on which four brush holders 102 are arranged.
- Each brush holder 102 has two cages 104 and 105 for brushes 13. These cages 104 and 105 are arranged on the same side of the support 101. These sets 102 are devoid of frontal hinge.
- Each brush holder assembly 102 comprises a wall 107 having a substantially S-shaped profile when it is observed in a radial direction, so as to define the two cages 104 and 105.
- a single partition 108 separates the two brushes 13 (see FIG. 1 1).
- Each cage 104; 105 is closed at the rear by a shutter 1 10 fixed on the cage 104; 105 corresponding by cooperation of fasteners 1 1 1 and 112.
- These elements comprise for example a lug 1 1 1 adapted to engage in an orifice 113 of the cage 104; 105.
- a spring 1 15 is placed in the bottom of each cage 104; 105, against the shutter 1 10.
- This spring 115 serves to exert on the brush 13 associated, a force tending to apply against the collector 12 of the starter.
- the brush holder assembly 102 is fixed on the support for example by folding legs or tabs of this set on the support.
- the brushes 13 are separated from each other.
- the support 85 may comprise a recess 120 and receive a brush holder assembly 130 provided with cages 131 and 132 disposed on either side of the support 85.
- the cages 131 and 132 communicate with each other through the recess 120 so that the brushes 13 placed in these cages are contiguous.
- the assembly 130 comprises two lugs 134 making it possible to rivet this assembly 130 on the support 85.
- the assembly 130 further comprises two lateral crimping tabs 135 arranged to be crimped on the support 85 on its two opposite faces.
- Figure 15 shows the tabs 135 in the folded position.
- FIGS. 16 to 19 show a variant of the previous implementation example.
- the brush assembly 140 comprises, in addition to the riveting lugs 134, an abutment formed on a folded front tongue 141 of the assembly 140.
- Two retaining flaps 142 are provided on the assembly 140 to be applied on two sides. opposed to the support 85.
- the brush holder assembly 140 further comprises latching lugs 145, at the rear, for engaging on supports 146 of the support 85 to immobilize, in connection with the abutment effect at the front, assembly 140 on the support 85.
Landscapes
- Motor Or Generator Current Collectors (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0855060A FR2934436B1 (fr) | 2008-07-24 | 2008-07-24 | Dispositif a balais pour demarreur de vehicule automobile |
FR0855053A FR2934435B1 (fr) | 2008-07-24 | 2008-07-24 | Dispositif a balais pour demarreur de vehicule automobile |
PCT/FR2009/051357 WO2010010270A2 (fr) | 2008-07-24 | 2009-07-09 | Dispositif a balais pour demarreur de vehicule automobile |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2313951A2 true EP2313951A2 (fr) | 2011-04-27 |
EP2313951C0 EP2313951C0 (fr) | 2024-02-28 |
EP2313951B1 EP2313951B1 (fr) | 2024-02-28 |
Family
ID=41567231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09784488.0A Active EP2313951B1 (fr) | 2008-07-24 | 2009-07-09 | Dispositif a balais pour demarreur de vehicule automobile |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2313951B1 (fr) |
CN (1) | CN102113186B (fr) |
WO (1) | WO2010010270A2 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106782964B (zh) * | 2017-01-21 | 2019-01-18 | 东莞市钺河自动化科技有限公司 | 一种电位器的自动组装机 |
FR3069982A1 (fr) * | 2017-08-04 | 2019-02-08 | Valeo Equipements Electriques Moteur | Porte balais pour demarreur de vehicule automobile |
DE102021122065B3 (de) | 2021-08-26 | 2022-11-17 | Audi Aktiengesellschaft | Bürstenträger zur Halterung von wenigstens zwei Bürsten für eine Schleifkontaktanordnung, elektrische Maschine und Kraftfahrzeug |
WO2023210091A1 (fr) * | 2022-04-28 | 2023-11-02 | 株式会社アイシン | Machine électrique rotative à champ enroulé et dispositif d'alimentation électrique |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4114061A (en) * | 1977-03-07 | 1978-09-12 | Eltra Corporation | Brush cage for a dynamoelectric machine |
EP1843451A1 (fr) * | 2006-04-03 | 2007-10-10 | Valeo Equipements Electriques Moteur | Dispositif porte-balais pour une machine électrique tournante |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1954910A (en) * | 1929-12-31 | 1934-04-17 | Eclipse Aviat Corp | Brush mounting for electrical machines |
IT8553611V0 (it) * | 1985-07-19 | 1985-07-19 | Magneti Marelli Spa | Perfezionamenti nei portaspazzole per macchine elettriche a collettore particolarmente per motori di avviamento |
JPH0318658U (fr) * | 1989-06-28 | 1991-02-25 | ||
US5731650A (en) * | 1994-11-14 | 1998-03-24 | Lucas Aerospace Power Equipment Corp. | Dynamoelectric machine with brush wear sensor |
US5753992A (en) * | 1996-11-07 | 1998-05-19 | Delco Remy America Inc | Single piece brush fixture for dynamoelectric machine |
US6909218B2 (en) * | 2003-02-26 | 2005-06-21 | Black & Decker Inc. | End cap and brush box assembly |
FR2858124B1 (fr) * | 2003-07-23 | 2005-11-18 | Valeo Embrayages | Porte-balais de moteur electrique, moteur electrique et actionneur |
DE102004062840B3 (de) * | 2004-12-27 | 2006-10-05 | Hilti Ag | Bürstengrundplatte mit Bürstenführungsblech |
-
2009
- 2009-07-09 CN CN200980128781.XA patent/CN102113186B/zh active Active
- 2009-07-09 EP EP09784488.0A patent/EP2313951B1/fr active Active
- 2009-07-09 WO PCT/FR2009/051357 patent/WO2010010270A2/fr active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4114061A (en) * | 1977-03-07 | 1978-09-12 | Eltra Corporation | Brush cage for a dynamoelectric machine |
EP1843451A1 (fr) * | 2006-04-03 | 2007-10-10 | Valeo Equipements Electriques Moteur | Dispositif porte-balais pour une machine électrique tournante |
Also Published As
Publication number | Publication date |
---|---|
WO2010010270A2 (fr) | 2010-01-28 |
WO2010010270A3 (fr) | 2010-03-25 |
CN102113186B (zh) | 2014-06-25 |
EP2313951C0 (fr) | 2024-02-28 |
CN102113186A (zh) | 2011-06-29 |
EP2313951B1 (fr) | 2024-02-28 |
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