EP0806818B1 - Porte-balai - Google Patents

Porte-balai Download PDF

Info

Publication number
EP0806818B1
EP0806818B1 EP97107717A EP97107717A EP0806818B1 EP 0806818 B1 EP0806818 B1 EP 0806818B1 EP 97107717 A EP97107717 A EP 97107717A EP 97107717 A EP97107717 A EP 97107717A EP 0806818 B1 EP0806818 B1 EP 0806818B1
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.)
Expired - Lifetime
Application number
EP97107717A
Other languages
German (de)
English (en)
Other versions
EP0806818A2 (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

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
    • H01R39/383—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 cuboid or quiver-shaped housing which is open on the front and in which the carbon brush is axially displaceable by means of a spring element acting thereon, the carbon brush emanating from an electrical conductor such as a strand which connects with the housing whose rear end wall is connected as welded, which is an integral part of the housing.
  • 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 braid runs along the rear end wall of the housing in order to then 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 stranded wire will come loose or break off at the bending point.
  • Brush holders for carbon brushes with contact buttons are also known, in which the contact button has a bendable tongue from which an electrical conductor bonded to the carbon brush originates (DE 70 41 832 U1).
  • 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 which is bent or angled out of the rear end wall preferably extends centrally into the interior of the housing.
  • the electrical conductor such as carbon braid
  • the electrical conductor 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 kinking or loosening of the electrical conductor. Since the section from which the electrical conductor extends extends into the interior of the housing, there is also the advantage that the electrical conductor can be made shorter, so that material is saved.
  • the carbon strand has a quasi-neutral profile when the housing is closed and extends within the spring element, which is preferably designed as a helical spring, impermissible loads on the electrical conductor are virtually excluded.
  • 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 recess, 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, in order to close the end wall closing the rear opening of the housing, which is an extended section of a side wall is to run within 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 region to which the electrical conductor is connected should bend, should run approximately in the central region of the rear end wall and thus with the housing closed at the rear along its central axis.
  • FIG. 1 shows a brush holder 10 for a carbon brush 12, which in the exemplary embodiment is arranged axially displaceably in a cuboid housing 14.
  • 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 a region 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 is in turn bendable 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 illustration 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)

Claims (10)

  1. Porte-balai (10) pour un balai en charbon (12), comprenant un boîtier (14) de forme parallélépipédique ou tubulaire, ouvert d'un côté et dans lequel le balai peut coulisser axialement sous l'action d'un élément élastique (16), ainsi qu'un conducteur électrique tel qu'un cordon (20) partant du balai et relié, par soudage par exemple, à la paroi frontale arrière (22) du boîtier dont il est un constituant intégral,
    caractérisé en ce que
    le conducteur électrique (20) part d'une partie (26) de la paroi frontale arrière (22) qui s'étend selon la direction longitudinale, ou à peu près, du boîtier (14).
  2. Porte-balai selon la revendication 1,
    caractérisé en ce que
    le conducteur électrique (20) comprend une section de conducteur (32) qui part de la partie (26) du boîtier disposée selon l'axe de celui-ci et se poursuit parallèlement ou à peu près, à l'axe longitudinal du boîtier, et de préférence dans la partie centrale du boîtier (14).
  3. Porte-balai selon la revendication 1 ou 2,
    caractérisé en ce que
    la partie (26) de la paroi frontale arrière (22) du boîtier, qui est reliée au conducteur électrique (20) est une partie pliée ou coudée de cette paroi (22) et s'étend à l'intérieur du boîtier (14).
  4. Porte-balai selon au moins l'une des revendications précédentes,
    caractérisé en ce que
    la paroi frontale arrière (22) est une partie repliée d'une paroi latérale (25) du boîtier (14) et la partie ou la zone (26) à relier au conducteur électrique (20) est entourée par un évidement (24) en forme d'U ou de demi-cercle et se poursuit à travers une liaison (36) en forme de barrette, par la zone du boîtier (14) qui constitue la paroi frontale arrière (22).
  5. Porte-balai selon au moins l'une des revendications précédentes,
    caractérisé en ce que
    la partie ou zone (24) de la paroi frontale arrière (22) reliée au conducteur (20) peut être pliée autour d'une ligne de pliage (34) qui est parallèle, ou à peu près, à une ligne de pliage (30) de la paroi frontale arrière (22).
  6. Porte-balai selon au moins l'une des revendications précédentes,
    caractérisé en ce que
    l'évidement (24) en forme d'U ou de demi-cercle s'étend entre les lignes de pliage (30, 34).
  7. Porte-balai selon au moins l'une des revendications précédentes,
    caractérisé en ce que
    la ligne de pliage (34) le long de laquelle peut être pliée la partie (26) reliée au cordon (20) se trouve à peu près au milieu de la zone de la paroi frontale arrière (22) qui ferme le boîtier.
  8. Porte-balai selon au moins l'une des revendications précédentes,
    caractérisé en ce que
    le conducteur électrique (20) est relié à la zone de liaison (26, 28) de la paroi frontale arrière (22) par une partie (32) qui s'étend perpendiculairement, ou à peu près, aux lignes de pliage (30, 34).
  9. Porte-balai selon au moins l'une des revendications précédentes,
    caractérisé en ce que
    le conducteur électrique (20) c'est-à-dire sa section (32) est reliée par des lignes ou par des points réalisés, par soudage par exemple, à la zone pliable (26 de la paroi frontale arrière (26).
  10. Porte-balai selon au moins l'une des revendications précédentes,
    caractérisé en ce que
    la partie coudée (26) de la paroi frontale arrière (22) se trouve, quand le boîtier (14) est fermé, à l'intérieur de l'élément élastique tel qu'un ressort hélicoïdal (16).
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 EP0806818A2 (fr) 1997-11-12
EP0806818A3 EP0806818A3 (fr) 1998-12-09
EP0806818B1 true 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)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3544347B2 (ja) 2000-08-29 2004-07-21 三菱電機株式会社 回転電機のブラシホルダ装置
DE10155225A1 (de) * 2001-11-09 2003-05-22 Bosch Gmbh Robert Elektrische Maschine mit Bürstenhalter

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

Also Published As

Publication number Publication date
EP0806818A2 (fr) 1997-11-12
DE19619004A1 (de) 1997-11-13
EP0806818A3 (fr) 1998-12-09
DE59711556D1 (de) 2004-06-03

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