WO2008022631A1 - Machine à courant continu - Google Patents

Machine à courant continu Download PDF

Info

Publication number
WO2008022631A1
WO2008022631A1 PCT/DE2007/001479 DE2007001479W WO2008022631A1 WO 2008022631 A1 WO2008022631 A1 WO 2008022631A1 DE 2007001479 W DE2007001479 W DE 2007001479W WO 2008022631 A1 WO2008022631 A1 WO 2008022631A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide
carbon
carbon brush
machine
brush
Prior art date
Application number
PCT/DE2007/001479
Other languages
German (de)
English (en)
Inventor
Sebastian SCHRÖDER
Original Assignee
Temic Automotive Electric Motors 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 Temic Automotive Electric Motors Gmbh filed Critical Temic Automotive Electric Motors Gmbh
Priority to DE112007001862T priority Critical patent/DE112007001862A5/de
Publication of WO2008022631A1 publication Critical patent/WO2008022631A1/fr

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
    • H01R39/40—Brush holders enabling brush movement within holder during current collection
    • 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
    • H01R39/381—Brush holders characterised by the application of pressure to brush
    • 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
    • H01R39/41—Brush holders cartridge type
    • 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
    • H01R39/46—Auxiliary means for improving current transfer, or for reducing or preventing sparking or arcing

Definitions

  • This so-called brush fire can be the cause of high-frequency interference, which, for example, emits the DC machine during operation and feeds it back into the line network, thus causing interference to other consumers in the line network.
  • the rotation speed is also limited by this spark formation, since the carbon brush becomes hot at high speeds and consumes faster than in typical temperature ranges for these DC machines.
  • high speeds cause a higher induction voltage, which can initialize a revolving brush fire.
  • the carbon guide is formed by a base surface, optionally by side surfaces and by a number of guide surfaces bevelled relative to the base surface.
  • the coal guide is designed as a rectangular shaft.
  • the intended and necessary play of the carbon brush in the tangential direction in the coal guide is present over the entire height of the carbon brush and carbon guide and allows a stimulation of the carbon brush and thus the noise and the sparking, the so-called brush fire.
  • a chamfer of the guide surfaces and the pressure of the carbon brush in the direction of the base surface and the guide surfaces beveled relative to the base achieves at least one point contact and guidance of the usual example rectangular trained carbon brush in the coal guide.
  • the carbon brush In order to form the contact between the carbon brush and the carbon guide as a surface contact, the carbon brush also has a guide surface which is adapted to the guide surface of the carbon guide.
  • the pressure of the carbon brush in the direction of the base surface of the carbon guide is preferably carried out via the integration of an additional component such as a spiral, torsion or spiral spring in the coal guide.
  • the spring element can also be provided in terms of production technology in the coal guide or in one of the add-on parts.
  • the pressure of the carbon brush is effected by a spring bias acting in the radial direction via a lever deflection.
  • advantages of this embodiment lie in a simpler and therefore more cost-effective production of the lamellar brush system, since the carbon brush itself and the carbon brush le Installation larger manufacturing tolerances are acceptable than in the usual execution.
  • the tool life is higher than in the previous versions, since the wear of the carbon brush is reduced by minimizing the shock excitation and sparking, which also has a cost-effective effect on the operation of the DC machine.
  • FIG. 2 shows the DC machine according to FIG. 1 in perspective view
  • FIG. 1 in three-dimensional view.
  • the contacts 12 of the commutator 10 are constructed such that they constantly change during the rotation of the armature 6, the polarity of the armature winding 8, not shown here.
  • the carbon brush 12 consists of an electrically highly conductive material, such as graphite, which is also characterized by the property that during operation by the pressing of the carbon brush 12 to the commutator 10 abrasion occurs, the contact surface between carbon brush 12 and commutator 10 smears.
  • the leadership of the carbon brush 12 of a commutator 10 is carried out in a so-called coal shaft 14, also referred to as a carbon guide, according to FIG. 3.
  • a so-called coal shaft 14 also referred to as a carbon guide
  • heat is generated, which increases with increasing speed.
  • the carbon guide 14 and the carbon brush 12 are made of different materials, these expand when heated in the operation of the DC machine 1 differently.
  • a clearance is provided between the inner wall of the carbon guide 14 and the carbon brush 12, which catches the different expansions.
  • the carbon brush 12 in the carbon guide 14 is tangential and radially movable and generated by the inevitable tangential and radial movement and the impact of the carbon brush 12 on the inner wall of the carbon guide 14 a noise. This noise increases with increasing speed of the DC machine.
  • the guide surface 18 of the carbon brush 12 is designed with a chamfer adapted to the guide surface 16 of the carbon guide 14.
  • FIG. 4 A particularly advantageous design of the device for generating the contact pressure is shown in FIG. 4.
  • a spring 22 generates by its bias a pressure on a lever 24 which is integrated laterally to the carbon brush 12 in the coal guide 14.
  • the axis 26 extends in the tangential direction, creates an axial contact pressure on the carbon brush 12 in the direction of the base surface 20 of the carbon guide 14th Due to the bevel of the guide surface 18 of the carbon brush 12 and the bevel of the guide surface 16 of the carbon guide 14 in conjunction with the axial contact pressure exerted on the carbon brush 12 in the direction of the base surface 20 of the carbon guide 14 is formed between the guide surface 16 of the coal guide 14 and the guide surface 18 of the carbon brush 12 line contact or surface contact.
  • the design of the contact between the carbon guide 14 and the carbon brush 12 as surface contact largely reduces the noise, such as by shock excitation between the carbon guide 14 and the carbon brush 12, and the so-called brush fire, at the contact surface between coal guide 14 and the carbon brush 12 can arise.

Landscapes

  • Motor Or Generator Current Collectors (AREA)

Abstract

L'invention concerne une machine (1) à courant continu comprenant un certain nombre de balais (12) en charbon qui sont respectivement disposés dans un guide-balais (14) de manière à pouvoir coulisser dans le sens de leur longueur. L'invention doit permettre de réduire ou d'éviter l'étincelage aux balais et ainsi d'exclure largement une production de bruit excessive ainsi que les parasites à haute fréquence. Pour ce faire, conformément à l'invention, il est prévu un guide-balais (14) qui est constitué d'une surface (20) de base, éventuellement de surfaces latérales et d'un certain nombre de surfaces (16) de guidage biseautées par rapport à la surface (20) de base.
PCT/DE2007/001479 2006-08-23 2007-08-22 Machine à courant continu WO2008022631A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112007001862T DE112007001862A5 (de) 2006-08-23 2007-08-22 Gleichstrommaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006039594.8 2006-08-23
DE200610039594 DE102006039594A1 (de) 2006-08-23 2006-08-23 Gleichstrommaschine

Publications (1)

Publication Number Publication Date
WO2008022631A1 true WO2008022631A1 (fr) 2008-02-28

Family

ID=38865052

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/001479 WO2008022631A1 (fr) 2006-08-23 2007-08-22 Machine à courant continu

Country Status (2)

Country Link
DE (2) DE102006039594A1 (fr)
WO (1) WO2008022631A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2571115A1 (fr) * 2011-09-16 2013-03-20 Schleifring und Apparatebau GmbH Porte-balais modulaire
CN101752939B (zh) * 2008-12-17 2013-08-21 德昌电机(深圳)有限公司 一种电机及其使用的电刷和电刷盒
CN104733970A (zh) * 2013-12-19 2015-06-24 罗伯特·博世有限公司 用于电动机的换向装置和具有换向装置的电动机
CN105938968A (zh) * 2015-03-03 2016-09-14 罗伯特·博世有限公司 用于与换向器相接触的电刷架

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE565821C (de) * 1929-07-28 1932-12-08 Siemens Schuckertwerke Akt Ges Kohlenbuerstenhalter, dessen Kohle unter dem Einfluss einer Feder mit reichlichem Spiel in einem Fuehrungskasten entlang gleitet
DE1613251A1 (de) * 1966-07-15 1971-01-21 Lucas Industries Ltd Buerstenhalterung
GB2195835A (en) * 1986-09-08 1988-04-13 Johnson Electric Ind Mfg Anti-chatter brush assembly in an electric motor
DE19639009A1 (de) * 1995-09-25 1997-03-27 Walbro Corp Kraftstoffpumpenauslaßeinheit
US20030185693A1 (en) * 2002-03-28 2003-10-02 Eiji Iwanari Fuel pump having brushes and method of manufacturing the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE540786C (de) * 1927-10-25 1931-12-31 Siemens Schuckertwerke Akt Ges Buerstenhalter fuer elektrische Maschinen mit mindestens einer in einer Buerstentasche gefuehrten Buerste mit zur Laufachse parallelen Buerstenkanten
DE3022991A1 (de) * 1980-06-20 1982-01-14 Robert Bosch Gmbh, 7000 Stuttgart Stromuebertragungseinrichtung
DE3346595C2 (de) * 1983-12-23 1986-11-20 Max Frost Maschinen- und Apparatebau, 4508 Bohmte Bürstenhalter für elektrische Maschinen
JP2002315272A (ja) * 2001-04-16 2002-10-25 Asmo Co Ltd モータの給電ブラシ装置
JP2003047206A (ja) * 2001-07-31 2003-02-14 Asmo Co Ltd ブラシ装置
DE102004051461A1 (de) * 2004-10-22 2006-04-27 Robert Bosch Gmbh Elektrische Maschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE565821C (de) * 1929-07-28 1932-12-08 Siemens Schuckertwerke Akt Ges Kohlenbuerstenhalter, dessen Kohle unter dem Einfluss einer Feder mit reichlichem Spiel in einem Fuehrungskasten entlang gleitet
DE1613251A1 (de) * 1966-07-15 1971-01-21 Lucas Industries Ltd Buerstenhalterung
GB2195835A (en) * 1986-09-08 1988-04-13 Johnson Electric Ind Mfg Anti-chatter brush assembly in an electric motor
DE19639009A1 (de) * 1995-09-25 1997-03-27 Walbro Corp Kraftstoffpumpenauslaßeinheit
US20030185693A1 (en) * 2002-03-28 2003-10-02 Eiji Iwanari Fuel pump having brushes and method of manufacturing the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101752939B (zh) * 2008-12-17 2013-08-21 德昌电机(深圳)有限公司 一种电机及其使用的电刷和电刷盒
EP2571115A1 (fr) * 2011-09-16 2013-03-20 Schleifring und Apparatebau GmbH Porte-balais modulaire
CN104733970A (zh) * 2013-12-19 2015-06-24 罗伯特·博世有限公司 用于电动机的换向装置和具有换向装置的电动机
CN105938968A (zh) * 2015-03-03 2016-09-14 罗伯特·博世有限公司 用于与换向器相接触的电刷架

Also Published As

Publication number Publication date
DE102006039594A1 (de) 2008-03-06
DE112007001862A5 (de) 2009-05-07

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