EP0435868A1 - Porte-balai pour machine a collecteur electrique - Google Patents

Porte-balai pour machine a collecteur electrique

Info

Publication number
EP0435868A1
EP0435868A1 EP19890906053 EP89906053A EP0435868A1 EP 0435868 A1 EP0435868 A1 EP 0435868A1 EP 19890906053 EP19890906053 EP 19890906053 EP 89906053 A EP89906053 A EP 89906053A EP 0435868 A1 EP0435868 A1 EP 0435868A1
Authority
EP
European Patent Office
Prior art keywords
brush
plate
recess
brush holder
insulating
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Withdrawn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
EP19890906053
Other languages
German (de)
English (en)
Inventor
Hans-Dieter Schmid
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0435868A1 publication Critical patent/EP0435868A1/fr
Withdrawn legal-status Critical Current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
    • H01R39/385—Means for mechanical fixation of the brush holder

Definitions

  • the invention relates to a brush holder for an electrical commutator machine, in particular for a DC machine for vehicles, of the type defined in the preamble of claim 1.
  • a first insulating washer is arranged on the one hand between the brush plate and the rivet head spanning the brush plate and on the other hand between the rivet shaft and the in contrast, a much larger hole in the brush plate inserted a second insulating washer.
  • the entire brush holder is held by the single rivet bolt.
  • the brush holder according to the invention with the characterizing features of claim 1 has the advantage that at the same time a reliable rotation of the brush holder is achieved by what is necessary for the isolated fastening ⁇ of the brush holder to the brush plate insulating member.
  • This protection against rotation is obtained in that the ring web on the insulating part on the one hand fixes the riveted insulating part itself in the brush plate and on the other hand the pull-through pin of the brush holder with the insulating plate on the insulating part. Installation remains time-saving, as only one rivet bolt per brush holder needs to be riveted.
  • the insulating part according to the invention is a simple injection molded or pressed part that can be manufactured inexpensively.
  • the ring web can either be flush with the brush plate or after further passage through the insulating plate flush with the insulating plate.
  • An additional fastening of the brush holder to the brush plate by means of a hollow rivet, which passes through the pull-through pin of the brush holder, the ring web and the second recess of the insulating part, provides increased security against axial lifting of the brush holder from the brush plate.
  • Such additional protection is particularly recommended when installing the commutator machine in construction vehicles, where harsh operating conditions prevail.
  • FIG. 1 excerpts of a longitudinal section of a
  • FIG. 2 is a plan view in the direction of arrow A of an insulating part of the brush holder in FIG. 1, 3 is a bottom view of the insulating part in FIG. 2,
  • FIG. 5 detail of a longitudinal section of
  • Brush plate, insulating washer and insulating part of a brush holder according to a third embodiment.
  • the brush holder for an electrical commutator machine shown in longitudinal section and only in sections in FIG. 1, which is preferably used in a DC machine for vehicles, such as an alternator or starter, has a brush plate 10 which is held non-rotatably in the housing of the commutator machine.
  • 2n brush holders 11 are fastened on the brush plate 10 and are offset on a circular line by approximately the same circumferential angle, n being an integer.
  • Each brush holder 11 contains one in a known manner
  • Carbon brush 28 which is held axially displaceably in the brush holder 11 parallel to the brush plate 10 and rests on the commutator of the commutator machine under the action of a pressure spring, not shown here.
  • An example of the arrangement of the brush holders on the brush plate in association with the commutator of the commutator machine is shown and described in US Pat. No. 1,490,104.
  • the brush holder formed from sheet metal carries a hollow cylindrical pull-through pin 12 on its contact side 11a facing the brush plate 10 and in an extension of the
  • the contact side 11a has a retaining web 13 which projects from the brush holder 11 at a right angle and serves to fasten the brush holder 11 to the brush plate 10.
  • the attachment of the brush holder 11 is carried out in an insulated manner on the brush plate 10, specifically by means of a single rivet bolt 14.
  • a bore 15 is provided in the retaining web 13 and a bore 16 in the brush plate 10, through which the shaft 14a of the rivet bolt 14 projects .
  • a circular through opening 17 is provided in the brush plate 10 coaxially with the pull-through pin 12.
  • an insulating washer 18 is on one side of the brush plate 10 between the latter and the brush holder 11 with retaining web 13 and on the other side
  • Insulating part 19 arranged.
  • the insulating disk 18 carries two circular cutouts 20, 21 which are each arranged coaxially with the bore 15 or the through opening 17 of the brush plate 10.
  • the insulating part 19 accordingly carries two circular recesses 22 and 23, which are also arranged coaxially to the bore 15 or through-opening 17 in the brush plate 10.
  • Each recess 22, 23 is surrounded by an annular web 24 or 25, which is integral with the insulating part 19 and protrudes axially on the side of the insulating part 19 facing the brush plate 10.
  • the axial length of the ring web 24 is selected so that it protrudes through the bore 15 in the brush plate 10 and is flush with the brush plate 10 on its contact side for the insulating washer 18.
  • the outer diameter of the ring web 24 is smaller than the inside width of the bore 15 in the brush plate 10, while the inner diameter of the ring web 24 is chosen somewhat larger than the diameter of the rivet shaft 14a of the rivet bolt 14 is.
  • the annular web 25 is dimensioned in its axial length so that it passes both through the passage opening 17 in the brush plate 10 and through the recess 21 in the insulating washer 18 and is flush with the insulating washer 18 on the side facing the brush holder 11.
  • the radial ring width of the ring web 25 is dimensioned such that the ring web 25 on the one hand surrounds the pull-through pin 12 of the brush holder 11 projecting into the recess 21 in the insulating plate 18 and on the other hand in the through-opening 17 of the brush plate 10 and in the recess 21 of the same shape of the insulating plate
  • Ring ring 25 protrude through the passage opening 17 in the brush plate 10.
  • the insulating plate 18 is placed on the opposite side of the brush plate 10, its recess 21 being pushed over the annular web 25 and its recess 20 being aligned coaxially with the bore 15.
  • the rivet bolt 14 is inserted through the recess 22, the bore 15 and the recess 20, so that its rivet head 14b rests on the insulating part 19 and the free end of the rivet shaft 14a protrudes from the insulating plate 18.
  • the brush holder 11 is placed on the insulating plate 18, specifically so that the pull-through pin 12 projects positively into the interior of the annular web 25 and the bore 16 in the holding web 13 encompasses the rivet shaft 14a.
  • the rivet bolt 14 is caulked so that the brush holder 11 is held on the brush plate 10 in a non-detachable manner.
  • the brush holder 11 is fixed against rotation on the brush plate 10.
  • a hollow rivet 26 is passed through the pull-through pin 12, the ring land 25 and the through-opening 17 in the insulating part 19 for additional securing of the brush holder 11 on the brush plate 10 and after slipping on one on the insulating part 19 lying washer 27 caulked on the latter.
  • this brush holder corresponds to the brush holder described above and shown in FIG. 1.
  • the annular web 24 * surrounding the recess 22 and integral with the insulating part 19 has such an axial length that it not only bores the bore 15 in the brush plate 10 but also the recess 20 in penetrates the insulating plate 18 and is flush with the insulating plate 18 on the side facing the holding web 13.
  • the inside diameter of the ring web 24 ' is again chosen to be somewhat larger than the bore 15, so that the rivet bolt 14 can be passed through the interior of the ring web 24' without any problems.

Landscapes

  • Motor Or Generator Current Collectors (AREA)

Abstract

Un porte-balai pour une machine à collecteur électrique comprend une plaque à balais (10) montée dans le logement de la machine à collecteur et au moins deux montures à balais (11) assujetties sur la plaque à balais (10) au moyen d'un tourillon rivé (14) et qui reçoivent chacune un des balais de charbon (28) appliqués au collecteur. Afin d'isoler la plaque à balais (10) des montures à balais (11), une plaque isolante (18) est montée entre les deux, et du côté opposé, entre la plaque à balais (10) et la tête de rivet (14b), est agencé un organe isolant (19). L'organe isolant (19) porte une bague (25) qui entoure un évidement (23) et qui traverse par liaison de forme un orifice débouchant (17) de la plaque à balais (10) et un évidement (21) de la plaque isolante (18). La bague (25) entoure un tenon (12) qui fait saillie sur la monture à balai (11). La liaison de forme entre la bague (25) et le tenon (12) d'une part et la bague (25), l'évidement (21) de la plaque isolante (18) et l'orifice débouchant (17) de la plaque à balais (10) d'autre part permet d'assurer non seulement l'isolation au moyen de l'organe isolant (19) mais aussi d'assujettir les montures à balais (11) sur la plaque à balais (10) de manière résistante aux torsions.
EP19890906053 1988-06-18 1989-06-01 Porte-balai pour machine a collecteur electrique Withdrawn EP0435868A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8807881U 1988-06-18
DE8807881U DE8807881U1 (de) 1988-06-18 1988-06-18 Bürstenhalter für eine elektrische Kommutatormaschine

Publications (1)

Publication Number Publication Date
EP0435868A1 true EP0435868A1 (fr) 1991-07-10

Family

ID=6825146

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890906053 Withdrawn EP0435868A1 (fr) 1988-06-18 1989-06-01 Porte-balai pour machine a collecteur electrique

Country Status (8)

Country Link
US (1) US5113106A (fr)
EP (1) EP0435868A1 (fr)
JP (1) JPH03505153A (fr)
AU (1) AU616534B2 (fr)
BR (1) BR8907496A (fr)
DE (1) DE8807881U1 (fr)
ES (1) ES2013677A6 (fr)
WO (1) WO1989012924A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5315199A (en) * 1993-04-30 1994-05-24 Ryobi Motor Products Corp. Bidirectional brush holder assembly
US5414317A (en) * 1993-10-29 1995-05-09 Eaton Stamping Company Electric motor with brush card isolated from endframe
US7466056B2 (en) * 2006-10-06 2008-12-16 Remi International, Inc Dynamoelectric machine brush holder assembly and method
US7696666B2 (en) * 2006-10-06 2010-04-13 Remy Technologies, L.L.C. Dynamoelectric machine grommet
US20080084133A1 (en) * 2006-10-06 2008-04-10 Steven Burton Dynamoelectric machine brush and method
US7705512B2 (en) * 2006-10-06 2010-04-27 Remy International, Inc. Dynamoelectric machine conductor
DE102007059555A1 (de) 2007-12-11 2009-06-18 Hoffmann & Co. Elektrokohle Ag Bürstenaggregat für eine elektrische Maschine, Feder- und Dichtungsanordnung für dasselbe, sowie Verfahren zu seiner Herstellung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1490104A (en) * 1920-03-04 1924-04-15 Electric Auto Lite Co Brush holder
US1954910A (en) * 1929-12-31 1934-04-17 Eclipse Aviat Corp Brush mounting for electrical machines
US2683826A (en) * 1953-03-03 1954-07-13 Gen Electric Dynamoelectric machine stator construction
GB1080993A (en) * 1963-09-23 1967-08-31 Lucas Industries Ltd Dynamo-electric machines
US3527971A (en) * 1968-05-08 1970-09-08 Applied Motors Inc Apparatus for mounting brushes and diodes in a dynamoelectric machine
DE2049962C3 (de) * 1970-10-12 1974-05-30 Robert Bosch Gmbh, 7000 Stuttgart Abdeckung für den Schleifringraum eins Wechselstromgenerators
US3654504A (en) * 1971-03-29 1972-04-04 Gen Electric Brush mechanism
DE2830338A1 (de) * 1978-07-11 1980-01-24 Bosch Gmbh Robert Halterung fuer buersten und/oder feldregler bei elektrischen maschinen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8912924A1 *

Also Published As

Publication number Publication date
JPH03505153A (ja) 1991-11-07
BR8907496A (pt) 1991-05-28
AU3681089A (en) 1990-01-12
ES2013677A6 (es) 1990-05-16
AU616534B2 (en) 1991-10-31
WO1989012924A1 (fr) 1989-12-28
US5113106A (en) 1992-05-12
DE8807881U1 (de) 1989-10-12

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