EP1861900A1 - Kohlebürste sowie verfahren zum beschichten einer kohlebürste - Google Patents
Kohlebürste sowie verfahren zum beschichten einer kohlebürsteInfo
- Publication number
- EP1861900A1 EP1861900A1 EP06707484A EP06707484A EP1861900A1 EP 1861900 A1 EP1861900 A1 EP 1861900A1 EP 06707484 A EP06707484 A EP 06707484A EP 06707484 A EP06707484 A EP 06707484A EP 1861900 A1 EP1861900 A1 EP 1861900A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carbon brush
- metallleitlackschicht
- microns
- temperature
- coating
- 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
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
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/26—Solid sliding contacts, e.g. carbon brush
-
- 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
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/20—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof
Definitions
- the invention relates to a carbon brush, in particular intended for small engines, with a metal layer on a surface region of the carbon brush. Furthermore, the invention at least one side face of the carbon brush, tall slaughter with a metal "refers to a process for coating a carbon brush, in particular for coating.
- the metal preferably consists of copper, silver or silver-coated copper, the layer being formed by electroless plating.
- the layer thickness itself can be between 1 .mu.m and 10 .mu.m.
- DE-A-103 44 717 relates to a carbon brush which has a metal layer on the back, which is connected to the material of the carbon brush by pressing and subsequent annealing. From industrial carbon brushes forth, it is known to line stamp holes with a silver layer to improve the electrical contact of the introduced strand.
- the present invention is based on the object to provide a carbon brush environmentally friendly and simple measures with a metal layer, which leads to a significant reduction in temperature during operation of the carbon brush.
- the layer is intended to increase the service life of the carbon brush and to improve the efficiency of a motor equipped with a corresponding carbon brush, in particular a small motor.
- the object is achieved by a carbon brush of the type mentioned above essentially in that the metal layer is a Metallleitlacktik which is heat-treated, in particular at a temperature above normal operating temperature of the carbon brush.
- a Metallleitlacktik such as silver or Kupferleitlacktik is applied to desired surface areas of the carbon brush except the tread to allow heat dissipation and thus cooling of the carbon brush.
- a method for coating a carbon brush of the type mentioned above is characterized in that a metal conductive ink layer is applied to a surface region of the carbon brush to be coated and then the carbon brush at the temperature.
- temperature T which is above normal operating temperature.
- the carbon brush is at a temperature T with T> 150 ° C, preferably 150 0 C ⁇ T ⁇ 250 0 C, annealed.
- the heat treatment of the carbon brush should be carried out for a time t of 30 minutes ⁇ t ⁇ 240 minutes, in particular 120 minutes ⁇ t ⁇ 240 minutes.
- the metal conductive ink layer itself can be applied by spraying, brushing, padding or rolling.
- metal-conducting lacquer layer is dried or dried before being tempered at ambient temperature.
- reproducible coating layers having an average thickness D with 15 ⁇ m> D> 2 ⁇ m, in particular 2 ⁇ m> D> 6 ⁇ m, can be applied to the carbon brush with corresponding methods.
- a carbon brush can be inexpensively provided with a metal layer, which leads to a desired heat dissipation.
- the metal-conducting lacquer layer can be applied to, in particular, the opposite broad sides during the production process of the carbon brush, without the running surface of the carbon brush being coated, as a result of which the running-in behavior is not adversely affected.
- a carbon brush 10 is shown in principle, which is particularly intended for small engines such as washing machines, vacuum cleaners, kitchen appliances, hair dryers, razors, toys and power tools for professionals and do-it-yourselfers.
- opposite broad sides 12, 14 of the cuboid carbon brush having a rectangular shape are provided with a metal conductive ink layer 16, 18 which dissipates heat to the required extent. The heat can be dissipated by the metal conductive ink layers 16, 18 via the carbon brush holder, if it is one made of metal, or via the air flowing past between the holder and the carbon brush.
- the broad sides 12, 14, are preferably coated.
- a silver or Kupferleitlack or mixtures thereof is used as Metallleitlack, wherein the Leitlack is preferably applied by tamping.
- the Leitlack is preferably applied by tamping.
- cost-effective coating is possible on a large scale, it being ensured at the same time that the areas of the carbon brush 10 which are to be provided with the metal layer are coated in a targeted manner.
- Other coating options like. Painting, spraying or rolling are also possible. However, care must be taken that the tread 20 of the carbon brush 10 is not coated, otherwise the running-in behavior of the carbon brush 10 could be impaired.
- the Metallleitlack Mrs is applied with a thickness between 15 .mu.m and 2 .mu.m on average, due to unevenness of the carbon brush surface and areas may have thicknesses of 30 microns or more.
- the layer 16, 18 covers the respective side surface 12, 14 in a planar manner.
- it is provided that, after application of the metal lacquer layer, it is dried or predried at ambient temperature, in order then to be heat-treated at a temperature which is above the normal operating temperature of the carbon brush 10.
- annealing temperatures in the range between 150 0 C and 250 ° C are preferred to be indicated.
- the duration of the heat treatment should be in the range between 30 minutes and 240 minutes, preferably between 120 minutes and 240 minutes.
- the silver conductive ink used is characterized by the following material properties:
- the silver content in the case of tamponizing for application of the layer should be greater than during brushing. Regardless, the silver content should be between 35% and 70% by weight.
- the silver content in the tamponizing can be between 60% by weight and 65% by weight and that on coating between 38% by weight and 42% by weight.
- the Silberleitlack should be based on acrylate resin base. Suitable solvents are acetates and butoxypropanes. The density of the silver conductive ink should be between 1.35 g / cm 3 and 1.55 g / cm 3 .
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI200631461T SI1861900T1 (sl) | 2005-03-18 | 2006-03-09 | Oglena ščetka in postopek za prevlečenje oglene ščetke |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200510013105 DE102005013105B4 (de) | 2005-03-18 | 2005-03-18 | Kohlebürste sowie Verfahren zum Beschichten einer Kohlebürste |
| PCT/EP2006/002149 WO2006097236A1 (de) | 2005-03-18 | 2006-03-09 | Kohlebürste sowie verfahren zum beschichten einer kohlebürste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1861900A1 true EP1861900A1 (de) | 2007-12-05 |
| EP1861900B1 EP1861900B1 (de) | 2012-08-01 |
Family
ID=36644834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06707484A Expired - Lifetime EP1861900B1 (de) | 2005-03-18 | 2006-03-09 | Kohlebürste sowie verfahren zum beschichten einer kohlebürste |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1861900B1 (de) |
| CN (1) | CN101142723A (de) |
| DE (1) | DE102005013105B4 (de) |
| SI (1) | SI1861900T1 (de) |
| WO (1) | WO2006097236A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10032466B1 (en) * | 2015-11-23 | 2018-07-24 | Magnecomp Corporation | Suspension vibration damper with internal metal layer |
| DE102018100227A1 (de) * | 2018-01-08 | 2019-07-11 | GAT Gesellschaft für Antriebstechnik mbH | Erdungsschleifeinheit |
| JP7250337B2 (ja) * | 2019-11-25 | 2023-04-03 | トライス株式会社 | 銀を主成分とする金属黒鉛質アースブラシ及びその製造方法 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE40011C (de) * | D. SCHMELZ und C. WÜTHRICH in Stuttgart | Werkzeug zum Einschlagen von Nägeln und Stiften in Schuhsohlen | ||
| DE1036371B (de) * | 1954-10-23 | 1958-08-14 | George John Pandapas | Stromwender oder Schleifringkoerper |
| DE1809201U (de) * | 1959-03-18 | 1960-04-07 | Diehl Fa | Einrichtung zum verringern des buerstenfeuers am kommutator von elektrischen gleichstrom-kleinstmotoren. |
| US3219557A (en) * | 1962-04-12 | 1965-11-23 | Pacific Scientific Co | Method of producing a rotary coupling |
| DE2166805B2 (de) * | 1971-10-16 | 1977-06-23 | Leitlack | |
| US4074153A (en) * | 1972-01-18 | 1978-02-14 | Baker Daniel | Magnetic propulsion device |
| US4074159A (en) * | 1976-04-16 | 1978-02-14 | Robison Russell O | Dynamo-electric machine |
| DE8033525U1 (de) * | 1980-12-17 | 1981-05-27 | Ringsdorff-Werke GmbH, 5300 Bonn | Abschaltbürste |
| JPH06335206A (ja) * | 1993-05-19 | 1994-12-02 | Toshiba Ceramics Co Ltd | ブラシ |
| JPH08223869A (ja) * | 1995-02-07 | 1996-08-30 | Hitachi Chem Co Ltd | 回転電機用ブラシ |
| DE19737685C2 (de) * | 1997-08-29 | 1999-08-12 | Sonderhoff Ernst Fa | Abschirmdichtung |
| JP2000197315A (ja) * | 1998-12-28 | 2000-07-14 | Totan Kako Kk | 電気機械用カ―ボンブラシ |
| WO2002001700A1 (fr) * | 2000-06-28 | 2002-01-03 | Totankako Co., Ltd. | Balai au carbone pour machine electrique |
| CH694372A5 (de) * | 2000-07-25 | 2004-12-15 | Elektro Feindraht Ag | Feindraht bzw. Feinstdraht für die Anwendung in einem Fasermaterial sowie Verwendung eines solchen Feindrahtes bzw. Feinstdrahts. |
| JP2004312921A (ja) * | 2003-04-09 | 2004-11-04 | Totan Kako Kk | 金属被覆カーボンブラシ |
| DE10344717A1 (de) * | 2003-07-17 | 2005-02-24 | KÄSDORF, Wolfgang | Stromübertragungsverbindung an eine Kohlebürste für einen Elektromotor |
-
2005
- 2005-03-18 DE DE200510013105 patent/DE102005013105B4/de not_active Expired - Fee Related
-
2006
- 2006-03-09 EP EP06707484A patent/EP1861900B1/de not_active Expired - Lifetime
- 2006-03-09 CN CNA2006800087009A patent/CN101142723A/zh active Pending
- 2006-03-09 WO PCT/EP2006/002149 patent/WO2006097236A1/de not_active Ceased
- 2006-03-09 SI SI200631461T patent/SI1861900T1/sl unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006097236A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1861900B1 (de) | 2012-08-01 |
| SI1861900T1 (sl) | 2012-12-31 |
| DE102005013105A1 (de) | 2006-09-21 |
| DE102005013105B4 (de) | 2013-09-19 |
| CN101142723A (zh) | 2008-03-12 |
| WO2006097236A1 (de) | 2006-09-21 |
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