DE759800C - Brush holders for electrical machines - Google Patents
Brush holders for electrical machinesInfo
- 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
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)
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1820699A (en) * | 1929-10-11 | 1931-08-25 | Westinghouse Electric & Mfg Co | Brushholder |
-
1939
- 1939-08-17 DE DES138288D patent/DE759800C/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1820699A (en) * | 1929-10-11 | 1931-08-25 | Westinghouse Electric & Mfg Co | Brushholder |
Cited By (2)
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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