EP0806818A2 - Porte-balai - Google Patents

Porte-balai Download PDF

Info

Publication number
EP0806818A2
EP0806818A2 EP97107717A EP97107717A EP0806818A2 EP 0806818 A2 EP0806818 A2 EP 0806818A2 EP 97107717 A EP97107717 A EP 97107717A EP 97107717 A EP97107717 A EP 97107717A EP 0806818 A2 EP0806818 A2 EP 0806818A2
Authority
EP
European Patent Office
Prior art keywords
housing
end wall
rear end
section
brush holder
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
Application number
EP97107717A
Other languages
German (de)
English (en)
Other versions
EP0806818B1 (fr
EP0806818A3 (fr
Inventor
Gunnar Dipl.-Ing. Block
Tilo H. Winter
Henning Block
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.)
Schunk Motorensysteme GmbH
Original Assignee
Schunk Motorensysteme 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 Schunk Motorensysteme GmbH filed Critical Schunk Motorensysteme GmbH
Publication of EP0806818A2 publication Critical patent/EP0806818A2/fr
Publication of EP0806818A3 publication Critical patent/EP0806818A3/fr
Application granted granted Critical
Publication of EP0806818B1 publication Critical patent/EP0806818B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01R39/383—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
    • H01R39/41—Brush holders cartridge type

Definitions

  • the invention relates to a brush holder for a carbon brush comprising a front-open cuboid or quiver-shaped housing, in which the carbon brush is axially displaceable by means of a spring element acting on it, an electric conductor such as a strand starting from the carbon brush, which connects with the housing whose rear end wall is connected as welded.
  • Corresponding brackets are used to guide grinding poles, which transmit electrical current from a stationary to a moving component, for example from the starter to the armature of an electric motor. In this case, the current is transferred to slip rings or collector plates. Corresponding electric motors are often exposed to heavy loads and shocks.
  • the strand runs along the rear end wall of the housing, in order then to be guided at an angle of 90 ° to the carbon brush. Since corresponding brush guides, as mentioned, can be exposed to heavy loads such as vibrations, there is a risk that the strand may come loose or break off at the bending point.
  • the present invention is based on the problem of developing a brush holder in such a way that a secure connection between the electrical conductor and the housing of the brush holder is possible, while at the same time the length of the electrical conductor should be kept as short as possible.
  • the problem is essentially solved in that the electrical conductor starts from a section of the rear end wall that extends in or approximately in the longitudinal direction of the housing.
  • the section bent or angled out of the rear end wall preferably extends centrally into the interior of the housing.
  • the electrical conductor such as carbon strand is no longer angled when the housing is closed on the rear. Rather, the carbon strand always runs in the longitudinal direction of the housing, so that vibrations and other loads do not lead to the electrical conductor being bent or released. Since the section from which the electrical conductor extends extends into the interior of the housing, there is the further advantage that the electrical conductor can be made shorter, so that material is saved.
  • the carbon strand has a quasi-neutral course in the closed state of the housing and extends within the spring element, which is preferably designed as a helical spring, impermissible loads on the electrical conductor are almost impossible.
  • the area of the rear end wall to which the electrical conductor is connected as welded is surrounded by a U-shaped or part-circular cutout, the area itself merging into the rear end wall via a web.
  • the web is then penetrated by a bending line, along which the area surrounding the recess is angled, around the end wall which closes the rear opening of the housing and which is an extended section of a side wall is to run inside the housing and along its longitudinal axis.
  • the bending line, along which the rear end wall is bent to close the housing runs parallel or almost parallel to the bending line, along which the area is bent, which is connected to the electrical conductor like a strand as is welded.
  • the bending line, around which the area to which the electrical conductor is connected should bend, should run approximately in the center area of the rear end wall and thus with the housing closed at the rear along its central axis.
  • a brush holder 10 for a carbon brush 12 is shown, which is arranged axially displaceable in a cuboid housing 14 in the embodiment.
  • a coil spring 16 acts on the rear of the carbon brush 12.
  • An electrical conductor in the form of a strand 20 extends from the rear end wall 18 of the carbon brush 12 and welds to the rear side wall 22 of the housing 14 becomes.
  • the rear side wall 24 is an extended section of a side wall 25 of the housing 14. In the exemplary embodiment, this is the bottom wall 25.
  • the rear wall 22 has an area 26 surrounded by a U-shaped recess 24, in which the carbon strand 20 is fastened and welded. This welding area is identified by reference numeral 28.
  • the strand 20 is welded to the region 26 with an end section 32.
  • the section 32 runs parallel to the longitudinal axis of the housing 14.
  • the region or section 26 of the rear end wall 22 can in turn be bent about a bending line 34 which runs parallel to the bending line 30 about which the end wall 22 can be bent. Furthermore, the bending line 34 runs within a constriction 36 between the welding area 26, 28 and the rear wall 22 itself.
  • the end wall 22 is bent around the bending line 30 and on the other hand the region 26 in which the strand 22 is welded is bent around the bending line 34 such that the section 26 within the housing 14 extends along its longitudinal axis and preferably extends centrally in this.
  • the strand 22 is not kinked, but rather runs essentially in the longitudinal direction of the housing 14 and in the middle thereof, so that there is a neutral profile.
  • the sectional view in FIG. 5 shows that the bent section 26 and thus the strand 32 are surrounded by the helical spring 16.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
EP97107717A 1996-05-10 1997-05-12 Porte-balai Expired - Lifetime EP0806818B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19619004 1996-05-10
DE19619004A DE19619004A1 (de) 1996-05-10 1996-05-10 Bürstenhalterung

Publications (3)

Publication Number Publication Date
EP0806818A2 true EP0806818A2 (fr) 1997-11-12
EP0806818A3 EP0806818A3 (fr) 1998-12-09
EP0806818B1 EP0806818B1 (fr) 2004-04-28

Family

ID=7794025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97107717A Expired - Lifetime EP0806818B1 (fr) 1996-05-10 1997-05-12 Porte-balai

Country Status (2)

Country Link
EP (1) EP0806818B1 (fr)
DE (2) DE19619004A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1184959A1 (fr) * 2000-08-29 2002-03-06 Mitsubishi Denki Kabushiki Kaisha Porte-balais pour machine dynamoélectrique
EP1311039A3 (fr) * 2001-11-09 2007-08-22 Robert Bosch Gmbh Machine électrique avec porte-balais

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2004910A1 (de) * 1970-02-04 1971-08-19 Filipenko I Bursteneinheit fur elektrische Ma schinen, vorzugsweise für Maschinen mit Schleifringen
DE7041832U (de) * 1970-11-12 1971-04-08 Conradty C Kontaktknopf fur Schweißbefestigung an Kohlebürsten fur Köcherbürstenhalter
NL7017717A (fr) * 1970-12-04 1972-06-06
DE8605529U1 (de) * 1986-02-28 1987-06-25 Siemens AG, 1000 Berlin und 8000 München Kohlebürste

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1184959A1 (fr) * 2000-08-29 2002-03-06 Mitsubishi Denki Kabushiki Kaisha Porte-balais pour machine dynamoélectrique
US7414346B1 (en) 2000-08-29 2008-08-19 Mitsubishi Denki Kabushiki Kaisha Brush holder for dynamo-electric machine
EP1311039A3 (fr) * 2001-11-09 2007-08-22 Robert Bosch Gmbh Machine électrique avec porte-balais

Also Published As

Publication number Publication date
EP0806818B1 (fr) 2004-04-28
DE19619004A1 (de) 1997-11-13
EP0806818A3 (fr) 1998-12-09
DE59711556D1 (de) 2004-06-03

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