EP0801825B1 - Kohlebürste - Google Patents

Kohlebürste Download PDF

Info

Publication number
EP0801825B1
EP0801825B1 EP96900555A EP96900555A EP0801825B1 EP 0801825 B1 EP0801825 B1 EP 0801825B1 EP 96900555 A EP96900555 A EP 96900555A EP 96900555 A EP96900555 A EP 96900555A EP 0801825 B1 EP0801825 B1 EP 0801825B1
Authority
EP
European Patent Office
Prior art keywords
collector
carbon brush
grooves
brush according
brush
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.)
Revoked
Application number
EP96900555A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0801825A1 (de
Inventor
Rainer Bruhn
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.)
ITT Automotive Europe GmbH
Continental Teves AG and Co oHG
Original Assignee
ITT Automotive Europe GmbH
Alfred Teves 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7750926&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0801825(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ITT Automotive Europe GmbH, Alfred Teves GmbH filed Critical ITT Automotive Europe GmbH
Publication of EP0801825A1 publication Critical patent/EP0801825A1/de
Application granted granted Critical
Publication of EP0801825B1 publication Critical patent/EP0801825B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
    • H01R39/26—Solid sliding contacts, e.g. carbon brush

Definitions

  • the invention relates to a carbon brush for an electric Machine that has an end face that leads to the system can be brought to a collector, according to the generic term of claim 1.
  • the contact surface has already been proposed to the axis of the collector or to the man of the collector.
  • the contact area will beveled accordingly. But this creates a sharp-edged transition between the contact surface and the lower side edge of the brush, so that at least in the initial phase operation of the motor only with the brush one edge abuts the collector.
  • these brushes generally dispensed with that when pressing the graphite mixture to remove the resulting hard surface. In In this case, the noise reduction that can be achieved is only slight. If the surface skin of the brush is removed after pressing, there is a risk that the edge will break off.
  • DE-A-1 538 982 discloses a carbon brush for one electrical machine with a curved face for Attachment to a collector of the electrical machine, the End face with respect to the axial direction of the collector is inclined. Regarding the desired noise reduction this structure is not a satisfactory solution.
  • the invention has for its object a reduction to achieve the noise level during operation.
  • the contact surface with respect to the axial direction of the collector tend. It only operates in the lower area with one or more Grooves to be provided in the transverse direction.
  • These grooves can be milled into the surface, so that at the same time removes the hard surface skin becomes.
  • the contact surface itself is according to the cylindrical one Curved surface of the collector.
  • the slope of the contact surface opposite the lateral surface of the collector lies in on the order of 6 to 10 degrees, preferably around 8 Degree.
  • the inclination to be set depends, among other things. also depend on which electrical currents are transmitted through the brush should.
  • FIGS. 1a, 1b, 1c show a carbon brush in different views
  • FIG. 2 shows a detail from FIG. 1a.
  • the carbon brush 1 shown consists of an elongated one Cuboid which is approximately square in cross section (FIG. 1b) and is approximately rectangular in longitudinal section (FIG. 1a).
  • Such a carbon brush is provided with a strand 2, via which the power supply takes place.
  • the brushes are in Quivers performed, arranged on a brush support plate are.
  • One end face of the brush, the contact face 3, reaches after assembling an engine to the lateral surface of a Collector 4.
  • the contact surface of the collector its outer surface is arranged.
  • the contact surface 3 of the brush 1 is now designed as follows: In the transverse direction, that is in the circumferential direction of the The collector is the contact surface 3, as in FIG. 1c recognize, curved. The curvature corresponds essentially the radius of the collector 4.
  • the contact surface 3 is to the outer surface of the collector 4 inclined. Between the outer surface of the Collector 4 and the contact surface 3 of the brush 1 is so a wedge-shaped gap 5 is formed.
  • the brush is preferably positioned in the holder so that the lower edge 6 is close to the brush support plate. However, it is also possible to position the brush so that the lower edge is at a distance from the brush support plate.
  • the grooves 10, 11, 12 are acute-angled, that is to say they have a triangular profile in cross section.
  • the lowermost groove 10 is open at the bottom, that is to say there is only a bevel relative to the underside 13 of the brush 1.
  • the brushes are made as follows.
  • Blanks are pressed and sintered from a mixture that essentially contains graphite.
  • the layer on the long sides of the brush can also be removed in this way.
  • the end face 3 is then beveled, as described above, with a corresponding curvature in the circumferential direction being achieved by the choice of the tool. Then one or more grooves are milled in the transverse direction on the lower edge.
  • the motor can be operated very quietly with such a carbon brush.
  • the protruding edges 14, 15 are often ground off during test runs of the engine. That is, the brush gradually includes a shape adapted to the outer surfaces of the collector, starting from the lower edge.
  • the contact surface 3 approximately an angle of 6 to 10 degrees to the outer surface of the collector should include.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
EP96900555A 1995-01-03 1996-01-02 Kohlebürste Revoked EP0801825B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19500016 1995-01-03
DE19500016 1995-01-03
PCT/EP1996/000001 WO1996021260A1 (de) 1995-01-03 1996-01-02 Kohlebürste

Publications (2)

Publication Number Publication Date
EP0801825A1 EP0801825A1 (de) 1997-10-22
EP0801825B1 true EP0801825B1 (de) 2000-05-17

Family

ID=7750926

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96900555A Revoked EP0801825B1 (de) 1995-01-03 1996-01-02 Kohlebürste

Country Status (9)

Country Link
US (1) US5909077A (es)
EP (1) EP0801825B1 (es)
JP (1) JPH10511838A (es)
BR (1) BR9606965A (es)
CZ (1) CZ287118B6 (es)
DE (2) DE19533031A1 (es)
ES (1) ES2145423T3 (es)
HU (1) HUP9802169A3 (es)
WO (1) WO1996021260A1 (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19962363A1 (de) * 1999-12-23 2001-06-28 Pierburg Ag Naßlaufender Gleichstrommotor
KR20020074325A (ko) * 2001-03-20 2002-09-30 주식회사 캄코 윈도우 리프트 모터용 브러시
JP3511513B2 (ja) * 2001-05-10 2004-03-29 三菱電機株式会社 ブラシ装置
WO2006049642A2 (en) * 2004-03-30 2006-05-11 Trico Products Corporation Electric motor having convex high-speed brush
US20060055276A1 (en) * 2004-09-16 2006-03-16 O'donnell Steven B Keyed motor brushes
FR2896095B1 (fr) * 2006-01-11 2008-06-13 Siemens Vdo Automotive Sas Balai pour moteur electrique
DE102007053314A1 (de) 2007-11-08 2009-05-14 Robert Bosch Gmbh Kohlebürste für eine elektrische Maschine
US8648515B2 (en) * 2009-03-03 2014-02-11 Johnson Electric S.A. Brush design for electric motor having commutator
CN108233583B (zh) * 2016-12-14 2021-11-30 德昌电机(深圳)有限公司 电机及其电刷

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2206366A (en) * 1937-10-22 1940-07-02 Albert G Redmond Brush assembly for dynamoelectric machines
US2296366A (en) * 1941-12-29 1942-09-22 Standard Oil Dev Co Borehole tool
US3205382A (en) * 1960-07-01 1965-09-07 Ford Motor Co Dynamoelectric machine
US3467846A (en) * 1965-05-05 1969-09-16 Lorraine Carbone Brushes for electric motors
DE6802635U (de) * 1968-01-11 1969-03-13 Rau Swf Autozubehoer Kohlebuerste fuer elektrische maschinen
GB1255501A (en) * 1968-01-19 1971-12-01 Lucas Industries Ltd Electric motors
US3794869A (en) * 1972-11-15 1974-02-26 Ford Motor Co Dynamoelectric machine end plate and mounting means
DE7626775U1 (de) * 1976-08-27 1976-12-16 Deutsche Carbone Ag, 6000 Frankfurt Kohlebürste für elektrische Maschinen
FR2437710A1 (fr) * 1978-09-26 1980-04-25 Lorraine Carbone Balai avec face frottante striee pour machines electriques
JPS55109155A (en) * 1979-02-09 1980-08-22 Matsushita Electric Works Ltd Carbon brush for motor
DE7917605U1 (de) * 1979-06-20 1980-11-27 Deutsche Carbone Ag, 6000 Frankfurt Geräuscharme Kohlebürste
SU1092630A1 (ru) * 1982-12-24 1984-05-15 Предприятие П/Я В-4514 Щетка дл электрических машин
JPH058787Y2 (es) * 1989-05-15 1993-03-04
US5414319A (en) * 1994-03-02 1995-05-09 Lucas Aerospace Power Equipment Corporation Dynamoelectric machine with brush having slanted core

Also Published As

Publication number Publication date
WO1996021260A1 (de) 1996-07-11
CZ208897A3 (en) 1997-11-12
DE59605249D1 (de) 2000-06-21
HUP9802169A2 (hu) 1998-12-28
EP0801825A1 (de) 1997-10-22
HUP9802169A3 (en) 2002-03-28
JPH10511838A (ja) 1998-11-10
ES2145423T3 (es) 2000-07-01
US5909077A (en) 1999-06-01
DE19533031A1 (de) 1996-07-04
BR9606965A (pt) 1999-01-26
CZ287118B6 (en) 2000-09-13

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