EP0449909B1 - Kohleschleifstück und verfahren zu seiner herstellung - Google Patents

Kohleschleifstück und verfahren zu seiner herstellung Download PDF

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Publication number
EP0449909B1
EP0449909B1 EP90900814A EP90900814A EP0449909B1 EP 0449909 B1 EP0449909 B1 EP 0449909B1 EP 90900814 A EP90900814 A EP 90900814A EP 90900814 A EP90900814 A EP 90900814A EP 0449909 B1 EP0449909 B1 EP 0449909B1
Authority
EP
European Patent Office
Prior art keywords
carbon
contact
power supply
pressed
carbon material
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 - Lifetime
Application number
EP90900814A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0449909A1 (de
Inventor
Peter Hoffmann
Johann Höll
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.)
Hoffmann and Co Elektrokohle AG
Original Assignee
Hoffmann and Co Elektrokohle 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 Hoffmann and Co Elektrokohle AG filed Critical Hoffmann and Co Elektrokohle AG
Priority to AT90900814T priority Critical patent/ATE88039T1/de
Publication of EP0449909A1 publication Critical patent/EP0449909A1/de
Application granted granted Critical
Publication of EP0449909B1 publication Critical patent/EP0449909B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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, which is provided on one side surface with 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 a carbon grinder is already known from FR-A-2 339263.
  • Such carbon grinding pieces are usually produced in a single pressing process, with corresponding layers of the first and the second carbon material in powder form being filled into the pressing mold and these then being pressed at the same time by means of a press ram for the finished carbon grinding piece provided with the support.
  • the end of the power supply line is simultaneously pressed into the mass to be pressed by means of the press ram and is firmly embedded in the mass during the pressing.
  • the power supply line is led out of the coal grinder on the same side surface that also with the Pad made of the low conductivity carbon material is covered.
  • the invention has for its object to design a carbon grinder of the type mentioned so that the contact resistance between the power supply and the carbon grinder remains unaffected by the second carbon material forming the support, even if the power supply line on the side bearing the support from the Carbon grinder is led out.
  • this object is achieved in that the support only partially covers the side surface of the carbon grinder and that the power supply line on the same side surface in its area left free from the support is led out of the contact strip.
  • the support 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 carbon grinder according to the invention.
  • 2 and 3 are schematic representations of the manufacture of the carbon grinder.
  • the carbon grinder 1 is, for example, cuboid and carries on its one side surface 3 a support 2 embedded in the carbon grinder, 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 carbon grinder 1 and pressed with it, are led out of the carbon grinder.
  • the narrow side 5, which is at right angles to the side surface 3, represents the running surface of the carbon grinder, for example, which rests against a commutator ring.
  • 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 preform, namely from a carbon material of lower conductivity, for example from pure graphite. Then the actual die 7 for the carbon grinder is filled with the first carbon material 1 ', which is a material with high conductivity, in particular a mixture of graphite and metal powder. The preform is placed on the surface of the filled powder layer 1 '. 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 cable 4 are pressed in time next to the preform 2 in the powder mass 1 'and then in the same operation the powder mass 1' together with the preform 2 and pressed pressed so that the carbon grinder 1 is formed as a composite body.

Landscapes

  • Polishing Bodies And Polishing Tools (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Disintegrating Or Milling (AREA)
  • Inert Electrodes (AREA)
EP90900814A 1988-12-20 1989-12-20 Kohleschleifstück und verfahren zu seiner herstellung Expired - Lifetime EP0449909B1 (de)

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 1988-12-20
DE8815801U DE8815801U1 (de) 1988-12-20 1988-12-20 Kohleschleifstück

Publications (2)

Publication Number Publication Date
EP0449909A1 EP0449909A1 (de) 1991-10-09
EP0449909B1 true 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 (ja)
EP (1) EP0449909B1 (ja)
JP (1) JPH04500580A (ja)
AT (1) ATE88039T1 (ja)
DE (2) DE8815801U1 (ja)
ES (1) ES2040108T3 (ja)
WO (1) WO1990007211A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430745B4 (de) * 1993-09-02 2006-06-14 Carbone Lorraine Applications Electriques Verfahren zur Herstellung von Vielschicht-Schleifkontakten

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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
DE60136877D1 (de) * 2000-02-22 2009-01-22 Denso Corp 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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430745B4 (de) * 1993-09-02 2006-06-14 Carbone Lorraine Applications Electriques Verfahren zur Herstellung von Vielschicht-Schleifkontakten

Also Published As

Publication number Publication date
DE8815801U1 (de) 1989-02-23
ATE88039T1 (de) 1993-04-15
US5285126A (en) 1994-02-08
JPH04500580A (ja) 1992-01-30
WO1990007211A1 (de) 1990-06-28
DE58904027D1 (de) 1993-05-13
EP0449909A1 (de) 1991-10-09
ES2040108T3 (es) 1993-10-01

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