DE759800C - Brush holders for electrical machines - Google Patents

Brush holders for electrical machines

Info

Publication number
DE759800C
DE759800C DES138288D DES0138288D DE759800C DE 759800 C DE759800 C DE 759800C DE S138288 D DES138288 D DE S138288D DE S0138288 D DES0138288 D DE S0138288D DE 759800 C DE759800 C DE 759800C
Authority
DE
Germany
Prior art keywords
brush
electrical machines
brush holder
brush holders
holders
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
Application number
DES138288D
Other languages
German (de)
Inventor
Alfred Oldenburg
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Priority to DES138288D priority Critical patent/DE759800C/en
Application granted granted Critical
Publication of DE759800C publication Critical patent/DE759800C/en
Expired 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
    • H01R39/388—Brush holders characterised by the material of the brush holder

Landscapes

  • Motor Or Generator Current Collectors (AREA)

Description

Bürstenhalter für elektrische Maschinen Die Erfindung betrifft einen Bürstenhalter für elektrische Maschinen.Brush holder for electrical machines The invention relates to a Brush holders for electrical machines.

Es sind bereits Bürstenhalter aus Aluminiumspritzguß für elektrische Maschinen bekanntgeworden, insbesondere auch Kastenhalter aus Aluminium oder Aluminiumlegierungen. Die bekannten Bürstenhalter dieser Art haben den Nachteil, daß in der Bürstenführung der Kohlebürsten schon nach verhältnismäßig kurzer Betriebsdauer Korrosionserscheinungen eintreten, so daß die Führung für die Bürsten ungenau, wird und eine Unsicherheit im Betrieb der Kohlebürsten eintritt. Es treten hierbei unerwünscht große Übergangswiderstände zu den nicht mehr sicher geführten Kohlebürsten und dem Kollektor auf, die zu einer Herabsetzung des Wirkungsgrades der elektrischen Maschine führen.There are already die-cast aluminum brush holders for electric Machines became known, especially box holders made of aluminum or aluminum alloys. The known brush holders of this type have the disadvantage that in the brush guide the carbon brushes show signs of corrosion after a relatively short period of operation occur so that the guidance for the brushes becomes imprecise and an uncertainty occurs during operation of the carbon brushes. This results in undesirably large contact resistances to the no longer safely guided carbon brushes and the collector, which become a Lead to a reduction in the efficiency of the electrical machine.

Gemäß der vorliegenden Erfindung werden diese Nachteile, vermieden, wenn man folgende bei Bürstenhaltern an sich bekannte Mittel vereinigt: i. Der Bürstenhalter besteht aus Aluminiumspritzguß, a. zumindest die Innenfläche des Bürstenhalters zur Führung der Kohlebürste ist eloxiert.According to the present invention, these disadvantages are avoided, if the following means known per se for brush holders are combined: i. The brush holder consists of aluminum injection molding, a. at least the inner surface of the brush holder for guiding the carbon brush is anodized.

Durch die Anbringung einer solchen Schutzschicht erreicht man, daß, die in solcher Weise ausgebildeten Flächen des Bürstenkastens praktisch überhaupt nicht verschleißen, so daß während der gesamten Benutzungsdauer des Bürstenhalters eine ausgezeichnete und fehlerfreie Führung der Kohlebürsten gewährleistet ist.By applying such a protective layer one achieves that, those in such Way trained surfaces of the brush box practical does not wear out at all, so that during the entire period of use of the brush holder excellent and faultless guidance of the carbon brushes is guaranteed.

Claims (1)

PATENTANSPRUCH: Bürstenhalter für elektrische Maschinen, gekennzeichnet durch die Vereinigung folgender an sich bekannter Mittel: i. Der Bürstenhalter besteht aus Aluminiumspritzguß, z. zumindest die Innenfläche des Bürstenhalters zur Führung der Kohlebürste ist eloxiert. Zur Abgrenzung des Erfindungs-egenstands vom Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden: USA.-Patentschrift Nr. i 82o G99; »Elektrotechnischer Anzeiger«, 1934, S. 1089; »Elektrische Bahnen«, 1934, S. 199.PATENT CLAIM: Brush holder for electrical machines, marked by combining the following means known per se: i. The brush holder consists from aluminum injection molding, e.g. at least the inner surface of the brush holder for guidance the carbon brush is anodized. To distinguish the subject matter of the invention from the state technology, the following publications are taken into account in the granting procedure U.S. Patent No. i 82o G99; "Electrotechnical Indicator", 1934, p. 1089; "Electric Railways", 1934, p. 199.
DES138288D 1939-08-17 1939-08-17 Brush holders for electrical machines Expired DE759800C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES138288D DE759800C (en) 1939-08-17 1939-08-17 Brush holders for electrical machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES138288D DE759800C (en) 1939-08-17 1939-08-17 Brush holders for electrical machines

Publications (1)

Publication Number Publication Date
DE759800C true DE759800C (en) 1953-09-07

Family

ID=7540801

Family Applications (1)

Application Number Title Priority Date Filing Date
DES138288D Expired DE759800C (en) 1939-08-17 1939-08-17 Brush holders for electrical machines

Country Status (1)

Country Link
DE (1) DE759800C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1524738A1 (en) * 2003-10-14 2005-04-20 BSH Bosch und Siemens Hausgeräte GmbH Isolating brush guide

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1820699A (en) * 1929-10-11 1931-08-25 Westinghouse Electric & Mfg Co Brushholder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1820699A (en) * 1929-10-11 1931-08-25 Westinghouse Electric & Mfg Co Brushholder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1524738A1 (en) * 2003-10-14 2005-04-20 BSH Bosch und Siemens Hausgeräte GmbH Isolating brush guide
US7514836B2 (en) * 2003-10-14 2009-04-07 Bsh Bosch Und Siemens Hausgeraete Gmbh Insulated carbon brush guide

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