EP0547437A2 - Dispositif de guidage de balais pour machines électriques - Google Patents

Dispositif de guidage de balais pour machines électriques Download PDF

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Publication number
EP0547437A2
EP0547437A2 EP92120600A EP92120600A EP0547437A2 EP 0547437 A2 EP0547437 A2 EP 0547437A2 EP 92120600 A EP92120600 A EP 92120600A EP 92120600 A EP92120600 A EP 92120600A EP 0547437 A2 EP0547437 A2 EP 0547437A2
Authority
EP
European Patent Office
Prior art keywords
brush
guide tube
pressure spring
bulges
arrangement according
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.)
Withdrawn
Application number
EP92120600A
Other languages
German (de)
English (en)
Other versions
EP0547437A3 (fr
Inventor
Alfred Dipl.-Ing. Appeldorn
Werner Dipl.-Ing. Steinecke
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0547437A2 publication Critical patent/EP0547437A2/fr
Publication of EP0547437A3 publication Critical patent/EP0547437A3/xx
Withdrawn legal-status Critical Current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
    • H01R39/38—Brush holders
    • H01R39/40—Brush holders enabling brush movement within holder during current collection

Definitions

  • the invention relates to a brush guide arrangement for electrical machines of the type specified in the preamble of claim 1.
  • commutation brushes to form a sliding electrical connection to the commutator
  • DE-AS 12 08 001 a brush holder is used, in which a rectangular brush is received in a rectangular brush tube.
  • the electrical line connected to the brush is surrounded by a spring which lies between the carbon brush and a clamp connected to the electrical line. All parts are accommodated in the brush tube, with the compression spring pressing against the brush on the one hand and, on the other hand, pressing against the end of the brush tube via the clamp.
  • the disadvantage of this known arrangement is that the cylindrical brush pressure spring does not receive any precise guidance, so that the spring is bent out laterally and thus the contact force between the commutation brush and the commutator is significantly reduced.
  • the invention has for its object to provide an inexpensive, simple brush guide and commutation brush, which also ensures precise guidance of the brush pressure spring with low friction and reliably prevents burning of carbon debris in the brush guide.
  • This object is achieved by the features characterized in claim 1.
  • the linear contact of the helical pressure spring with the guide tube improves the function of the brush pressure spring over the entire life of the carbon brushes.
  • a brush guide arrangement for electrical machines in which a guide tube 1 made of a conductive material and bent from a metal strip is provided, in which there is a commutation brush 5 made of carbon which is displaceable in the longitudinal direction and loaded by a helical brush pressure spring 3.
  • This brush pressure spring 3 exerts such a force on the commutation brush 5 in the direction of the open guide tube end 7 that its tapered free end 9 is pressed against a rotating commutator 11 and is kept in contact therewith.
  • the guide tube 1 has a rectangular cross-section for the form-fitting guidance of the correspondingly rectangular commutation brush 5.
  • the pressure spring In order to achieve an accurate and low-friction guidance of the pressure spring, it is in bulges 13, 15, which are located in the two large side walls 17, 19 of the guide tube 1 , arranged in a line.
  • the bulges 13, 15 can each have a trapezoidal cross section, the bottom surfaces 21, 23 and the two lower edges 25, 27, 29, 31 of the trapezoidal bulges 13, 15 being able to be brought into linear contact with the circumference of the pressure spring 3. Since the brush pressure spring 3 is made somewhat smaller than the inside diameter of the guide tube 1, the brush pressure spring 3 is always only in contact with two possible lines of six possible contact lines 33, 35, 37, 39, 41, 43 in the guide tube 1, which makes the pressure spring 3 special is carried out accurately and with little friction.
  • the line-shaped system takes place in the entire spring guidance area only at two points of contact of a spring turn. According to FIG. 3, the winding 4 bears against the guide tube 1 at the contact points 39 and 41. Since the individual turns are always slightly offset from one another, good guidance of the pressure spring 3 is ensured.
  • the bulge can also have a rectangular cross-section or have such a cross-sectional shape, the pressure spring 3 being connected to this guide tube 1 only with two lines of contact on each side of the two large side surfaces 17, 19 of the guide tube 1.
  • the lower edges 25, 27, 29, 31 of the trapezoidal bulges 13, 15 each have a rounded shape.
  • the guide tube 1 is designed such that the bottom surfaces 21, 23 of the trapezoidal bulges 13, 15 at the open guide tube end 7 toward the commutation brushes 3 have conically narrowed end surfaces 45, 47 such that a chimney effect does not occur in the brush shaft. This narrowing of the guide tube 1 on the carbon brush exit side makes it more difficult for carbon dust to enter the guide tube 1.
  • the Z. B. made of a sheet brass guide tube 1 is inserted into an existing insulating material from a brush housing 49 and can be locked therein.
  • This brush housing 49 consists of two housing parts 51, 53, of which a housing part 51 has fastening tabs 55, 57 with bores 59, 61 for fastening screws for fastening the brush guide housing 49 to a known brush plate, an end plate or another component in the electrical machines.
  • the commutation brush 3 is provided at its end lying in the guide tube 1 with a stop piece 63, to which one end of the pressure spring 3 is fastened.
  • the current is supplied via a copper strand 65, which is connected at one end to a contact plate 67 and forms the contact to the brush 5.
  • the copper braid 51 is connected to a stop piece 63 in a known manner.
  • the other end of the pressure spring 3 is also attached to this stop piece 63.
  • the power supply can also take place via the guide tube 1 itself.
  • the brush arrangement enables simple assembly of the carbon brush 5 and pressure spring 3 and a longer service life of these components.
  • Each turn of the brush pressure spring 3 is only at two of the six possible contact points 33, 35, 37, 39, 41, 43.
  • the turn 71 bears against the contact points 41 and 43 and the turn 73 bears against the contact points 37 and 39.
  • the turn 75 contacts the guide tube 1 at points 33 and 43, while the turn 77 contacts the contact points 41 and 39. Since the individual turns of the brush pressure spring 3 are always arranged slightly offset from one another, safe and low-friction guidance of the brush pressure spring 3 is always guaranteed.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
EP92120600A 1991-12-14 1992-12-03 Dispositif de guidage de balais pour machines électriques Withdrawn EP0547437A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914141307 DE4141307C2 (de) 1991-12-14 1991-12-14 Bürstenführungsanordnung für eine elektrische Maschine
DE4141307 1991-12-14

Publications (2)

Publication Number Publication Date
EP0547437A2 true EP0547437A2 (fr) 1993-06-23
EP0547437A3 EP0547437A3 (fr) 1994-01-05

Family

ID=6447085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92120600A Withdrawn EP0547437A2 (fr) 1991-12-14 1992-12-03 Dispositif de guidage de balais pour machines électriques

Country Status (2)

Country Link
EP (1) EP0547437A2 (fr)
DE (1) DE4141307C2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1117160A1 (fr) * 2000-01-13 2001-07-18 Schunk Italia S.r.l. Dispositif de porte-balai en charbon
EP1109272A3 (fr) * 1999-12-15 2002-02-06 Schunk Italia S.r.l. Porte-balai pour balai en charbon
EP1626479A1 (fr) * 2004-08-12 2006-02-15 SCHUNK Motorensysteme GmbH Dispositif porte-balai pour balai en charbon
EP2028314A1 (fr) 2007-08-22 2009-02-25 MIELE & CIE. KG Sèche-linge doté d'un dispositif de retenue
KR100925338B1 (ko) 2001-11-26 2009-11-09 순크 이탈리아 에스.알.엘. 카본 브러시 가이드 및 그의 제조 방법
US7671507B2 (en) 2004-01-28 2010-03-02 Bsh Bosch Und Siemens Hausgeraete Gmbh Brush bag for a dynamo-electric machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2580825B1 (fr) 2010-06-08 2020-05-06 Single Buoy Moorings, Inc. Porte-balais destiné à un pivot électrique

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE447417C (de) * 1923-12-04 1927-07-26 Jean Ruf Buerstenhalter fuer elektrische Maschinen, bei dem die Richtung der auf die Buerste wirkenden Druckkraft stets mit der Buerstenlaengsachse zusammenfaellt
US2045293A (en) * 1932-08-20 1936-06-23 Hoover Co Electric motor
GB673977A (en) * 1949-07-01 1952-06-18 Gen Electric Improvements in and relating to brush mechanism for dynamo-electric machines
US2748302A (en) * 1953-06-11 1956-05-29 Gen Electric Brush holder assembly for dynamoelectric machine
US3028515A (en) * 1958-10-27 1962-04-03 Gen Motors Corp Brush holder
US3177388A (en) * 1960-03-18 1965-04-06 Singer Co Brush holder assembly for electric motor
DE1148646B (de) * 1961-06-30 1963-05-16 Licentia Gmbh Kohlebuerstenhalterung fuer Elektromotoren
US3441766A (en) * 1966-10-26 1969-04-29 Black & Decker Mfg Co Electrical motor brush holder assembly
DD134285A1 (de) * 1977-11-24 1979-02-14 Neumann Sven Juergen Buerstenfuehrung und kommutierungsbuerste fuer elektrische maschinen,insbesondere kleine kommutatormaschinen
DE3311271A1 (de) * 1983-03-28 1984-10-11 Robert Bosch Gmbh, 7000 Stuttgart Elektrische maschine mit kleiner leistung, insbesondere kollektormotor
DE3744855C2 (en) * 1986-08-13 1991-11-14 Schunk Motorensysteme Gmbh, 2875 Ganderkesee, De Carbon brush holder assembly for commutator or slip-ring
DE3726689C2 (de) * 1986-08-13 2001-07-26 Schunk Motorensysteme Halterung für eine Kohlebürste
EP0302985B1 (fr) * 1987-08-12 1993-09-01 SCHUNK Motorensysteme GmbH Porte-balai pour un balai de contact en charbon

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1109272A3 (fr) * 1999-12-15 2002-02-06 Schunk Italia S.r.l. Porte-balai pour balai en charbon
EP1117160A1 (fr) * 2000-01-13 2001-07-18 Schunk Italia S.r.l. Dispositif de porte-balai en charbon
KR100925338B1 (ko) 2001-11-26 2009-11-09 순크 이탈리아 에스.알.엘. 카본 브러시 가이드 및 그의 제조 방법
US7671507B2 (en) 2004-01-28 2010-03-02 Bsh Bosch Und Siemens Hausgeraete Gmbh Brush bag for a dynamo-electric machine
EP1626479A1 (fr) * 2004-08-12 2006-02-15 SCHUNK Motorensysteme GmbH Dispositif porte-balai pour balai en charbon
EP2028314A1 (fr) 2007-08-22 2009-02-25 MIELE & CIE. KG Sèche-linge doté d'un dispositif de retenue
US8042285B2 (en) 2007-08-22 2011-10-25 Miele & Cie. Kg Laundry dryer with a holding device

Also Published As

Publication number Publication date
DE4141307C2 (de) 1999-02-18
EP0547437A3 (fr) 1994-01-05
DE4141307A1 (de) 1993-06-17

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