EP0449909A1 - Kohleschleifstück und verfahren zu seiner herstellung. - Google Patents
Kohleschleifstück und verfahren zu seiner herstellung.Info
- Publication number
- EP0449909A1 EP0449909A1 EP90900814A EP90900814A EP0449909A1 EP 0449909 A1 EP0449909 A1 EP 0449909A1 EP 90900814 A EP90900814 A EP 90900814A EP 90900814 A EP90900814 A EP 90900814A EP 0449909 A1 EP0449909 A1 EP 0449909A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carbon
- support
- pressed
- carbon material
- power supply
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 229910002804 graphite Inorganic materials 0.000 title description 3
- 239000010439 graphite Substances 0.000 title description 3
- 238000000034 method Methods 0.000 title description 3
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 20
- 239000003245 coal Substances 0.000 claims abstract description 11
- 239000003575 carbonaceous material Substances 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
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
- H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49119—Brush
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49204—Contact or terminal manufacturing
- Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
- Y10T29/4921—Contact or terminal manufacturing by assembling plural parts with bonding
- Y10T29/49211—Contact or terminal manufacturing by assembling plural parts with bonding of fused material
- Y10T29/49213—Metal
Definitions
- the invention relates to a carbon grinder with a pressed base body made of a first carbon material, with which is provided on a side surface of a support made of a second carbon material with lower conductivity, and with at least one power supply line embedded in the carbon grinder.
- Such carbon grinding pieces are usually produced in a single pressing process, corresponding layers of the first and the second carbon material being poured into powder form in the compression mold and these are then pressed simultaneously by means of a press ram to produce the finished carbon grinding piece provided with the support.
- the end of the power supply line is pressed into the mass to be pressed by means of the press ram and firmly embedded in the mass during the pressing.
- the power supply line is led out of the coal grinding piece on the same side surface that is also with the Cover made of the low conductivity carbon material is covered. If such a carbon grinder piece is produced in the usual manner described, the end of the power supply line must be pressed into the base body through the support layer, and.
- parts of the second carbon material with lower conductivity are carried along by the power supply line and pressed into the first carbon material. This means that parts of the second carbon material can accumulate in an uncontrolled manner between the power supply line and the first carbon material and can influence the contact resistance between the power supply line and the carbon contact piece in an uncontrolled manner.
- the invention is based on the object of designing a carbon contact piece of the type mentioned in such a way that the contact resistance between the power supply line and the carbon contact piece remains unaffected by the second carbon material forming the support, even when the power supply line is open the side surface carrying the support is led out of the carbon grinder.
- this object is achieved in that the support only partially covers the side surface of the carbon grinding piece, and in that the power supply line on the same side surface in its cover-free area. is richly led out of the contact strip.
- the overlay consists of a pre-pressed part made of the second carbon material, which is non-releasably press-connected to the base body made of the first carbon material.
- FIG. 1 is a perspective view of a coal grinding piece according to the invention.
- 2 and 3 are schematic representations of the manufacture of the carbon grinder.
- the carbon grinder 1 is for example quaderför ig and carries on one side surface 3 a piece embedded in the coal grinder pad 2, which however only covers part of this side surface, so that an area 3a of the side surface is left free becomes.
- two power supply cables 4, which are embedded in the coal loop piece 1 and pressed with it, are led out of the coal loop piece.
- the narrow side 5, which is perpendicular to the side surface 3, represents the running surface of the coal loop piece, for example, resting on a commutator ring during operation.
- the support 2 and 3 can be carried out as follows: In a separate mold (not shown), the support 2 is pre-pressed in the form of a flat, cuboid-shaped pre-compact, namely from one Carbon material of lower conductivity, e.g. made of pure graphite.
- the actual molding die 7 for the coal slug is then filled with the first carbon material 1 ', which is a material with high conductivity, in particular a mixture of graphite and metal powder.
- the charged powder layer area l 1 to the Ober ⁇ the pros will be launched compact.
- a stamp 9, which contains openings for receiving the power supply cable 4, is then lowered onto this arrangement from above.
- the ends of the power supply cables 4 are pressed into the powder mass 1 'at the same time as the pre-compact 2 - and then in the same operation the powder mass 1' is pressed together with the pre-compact 2 and pressed, so that the coal loop piece 1 is formed as a composite.
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Motor Or Generator Current Collectors (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Disintegrating Or Milling (AREA)
- Inert Electrodes (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90900814T ATE88039T1 (de) | 1988-12-20 | 1989-12-20 | Kohleschleifstueck und verfahren zu seiner herstellung. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8815801U DE8815801U1 (de) | 1988-12-20 | 1988-12-20 | Kohleschleifstück |
DE8815801U | 1988-12-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0449909A1 true EP0449909A1 (de) | 1991-10-09 |
EP0449909B1 EP0449909B1 (de) | 1993-04-07 |
Family
ID=6830966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90900814A Expired - Lifetime EP0449909B1 (de) | 1988-12-20 | 1989-12-20 | Kohleschleifstück und verfahren zu seiner herstellung |
Country Status (7)
Country | Link |
---|---|
US (1) | US5285126A (de) |
EP (1) | EP0449909B1 (de) |
JP (1) | JPH04500580A (de) |
AT (1) | ATE88039T1 (de) |
DE (2) | DE8815801U1 (de) |
ES (1) | ES2040108T3 (de) |
WO (1) | WO1990007211A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8815801U1 (de) * | 1988-12-20 | 1989-02-23 | Hoffmann & Co. Elektrokohle KG, Steeg | Kohleschleifstück |
US5387832A (en) * | 1991-04-25 | 1995-02-07 | Tokyo Electric Co., Ltd. | Brush and commutator motor having brush device using the same |
US5387831A (en) * | 1993-05-27 | 1995-02-07 | Yang; Tai-Her | Low circulation loss compound brush |
FR2709611B1 (fr) * | 1993-09-02 | 1995-11-10 | Lorraine Carbone | Procédé de fabrication de balais multicouches et balais obtenus par le procédé. |
EP1128496B1 (de) * | 2000-02-22 | 2008-12-10 | Denso Corporation | Verfahren zu Herstellung einer Mehrschicht-Bürste für eine rotierende elektrische Maschine |
JP3511513B2 (ja) | 2001-05-10 | 2004-03-29 | 三菱電機株式会社 | ブラシ装置 |
GB0303752D0 (en) * | 2003-02-18 | 2003-03-26 | Morgan Crucible Co | Composite electrical brush construction |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US672449A (en) * | 1900-08-31 | 1901-04-23 | Emmet T Bowen | Electrical conductor. |
US701369A (en) * | 1901-11-05 | 1902-06-03 | Eastern Carbon Works | Carbon brush and process of making same. |
GB556465A (en) * | 1942-03-02 | 1943-10-06 | Morgan Crucible Co | Improvements in or relating to electric current collecting brushes or the like |
CH272683A (fr) * | 1947-12-24 | 1950-12-31 | Morgan Crucible Company Limite | Balai "sandwich" pour machine électrique. |
DE1261589B (de) * | 1966-05-17 | 1968-02-22 | Sigri Elektrographit Gmbh | Kommutatorbuersten aus Kunstkohle- oder Elektrographit und Verfahren zu ihrer Herstellung |
US3445704A (en) * | 1967-12-26 | 1969-05-20 | Morganite Inc | Current collecting triple wafer brush assembly |
FR2339263A1 (fr) * | 1976-01-21 | 1977-08-19 | Lorraine Carbone | Balais a proprietes ameliorees pour machines electriques |
DE2838144A1 (de) * | 1978-09-01 | 1980-03-13 | Ringsdorff Werke Gmbh | Kohlebuersten fuer rotierende elektrische maschinen |
DE8815801U1 (de) * | 1988-12-20 | 1989-02-23 | Hoffmann & Co. Elektrokohle KG, Steeg | Kohleschleifstück |
JPH0371582A (ja) * | 1989-08-10 | 1991-03-27 | Fuji Electric Co Ltd | ブラシ |
JP2981498B2 (ja) * | 1989-11-27 | 1999-11-22 | 三菱製紙株式会社 | マイクロカプセル用乳化剤、該乳化剤を用いてなるマイクロカプセル及びその製造方法並びに該マイクロカプセルを用いたノーカーボン感圧複写紙 |
-
1988
- 1988-12-20 DE DE8815801U patent/DE8815801U1/de not_active Expired
-
1989
- 1989-12-20 JP JP90501724A patent/JPH04500580A/ja active Pending
- 1989-12-20 ES ES199090900814T patent/ES2040108T3/es not_active Expired - Lifetime
- 1989-12-20 US US07/690,996 patent/US5285126A/en not_active Expired - Lifetime
- 1989-12-20 EP EP90900814A patent/EP0449909B1/de not_active Expired - Lifetime
- 1989-12-20 AT AT90900814T patent/ATE88039T1/de not_active IP Right Cessation
- 1989-12-20 DE DE9090900814T patent/DE58904027D1/de not_active Expired - Lifetime
- 1989-12-20 WO PCT/EP1989/001579 patent/WO1990007211A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9007211A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2040108T3 (es) | 1993-10-01 |
US5285126A (en) | 1994-02-08 |
WO1990007211A1 (de) | 1990-06-28 |
JPH04500580A (ja) | 1992-01-30 |
DE58904027D1 (de) | 1993-05-13 |
ATE88039T1 (de) | 1993-04-15 |
DE8815801U1 (de) | 1989-02-23 |
EP0449909B1 (de) | 1993-04-07 |
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