EP0651473A2 - Slip ring or commutator motor - Google Patents

Slip ring or commutator motor Download PDF

Info

Publication number
EP0651473A2
EP0651473A2 EP94116339A EP94116339A EP0651473A2 EP 0651473 A2 EP0651473 A2 EP 0651473A2 EP 94116339 A EP94116339 A EP 94116339A EP 94116339 A EP94116339 A EP 94116339A EP 0651473 A2 EP0651473 A2 EP 0651473A2
Authority
EP
European Patent Office
Prior art keywords
slip ring
filler
commutator motor
wollastonite
motor according
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.)
Ceased
Application number
EP94116339A
Other languages
German (de)
French (fr)
Other versions
EP0651473A3 (en
Inventor
Thomas Maihofer
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 AG
Original Assignee
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 AG filed Critical Siemens AG
Publication of EP0651473A2 publication Critical patent/EP0651473A2/en
Publication of EP0651473A3 publication Critical patent/EP0651473A3/en
Ceased 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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/06—Manufacture of commutators
    • H01R43/08—Manufacture of commutators in which segments are not separated until after assembly
    • 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
    • H01R39/14—Fastenings of commutators or slip-rings to shafts
    • H01R39/16—Fastenings of commutators or slip-rings to shafts by means of moulded or cast material applied during or after assembly

Definitions

  • the invention relates to a slip ring or commutator motor according to the preamble of claim 1; such a commutator motor is e.g. known from EP-A1-0 482 235.
  • slip rings or lamellas ground in a slip ring or commutator motor for supplying power to the rotor by stator-side brushes are held on the outer circumference of a support body fastened radially on the inside on a rotor shaft, which usually consists of a molding compound, in particular a phenolic resin molding compound, and this as an expanded material Fillers are added.
  • a support body fastened radially on the inside on a rotor shaft which usually consists of a molding compound, in particular a phenolic resin molding compound, and this as an expanded material Fillers are added.
  • asbestos fibers as fillers, which are characterized by high temperature stability, mechanical strength, good connectivity and high filling density, but are undesirable because of their low biocompatibility, and are even increasingly prohibited by law.
  • the molding compound is admixed with wollastonite, preferably in the form of a needle, in a proportion of approximately 7% to 70% of the total proportion of filler (100%).
  • the length / thickness ratio of the needles of the needle-shaped structured wollastonite filler fraction is preferably in the range between 30: 1 to 35: 1.
  • the remaining filler content is preferably provided by an appropriate addition of glass fibers and / or glass balls.
  • Wollastonite is a calcium silicate (CaSiO3) and belongs to the group of naturally occurring chain silicates, the chain direction of the (SiO4) tetrahedra corresponding to the longitudinal extension of the needle-shaped structured wollastonite particles.
  • the crystallographic property of wollastonite requires a high mechanical strength, whereby the tensile strength and the modulus of elasticity are significantly higher than that of the phenolic resin intended for the molding compound.
  • the wollastonite filler has both higher temperature stability and higher filling density, as well as high thermal conductivity and good welding temperature resistance with high thermal stability when welding the commutator hooks, and only one low shrinkage and a small expansion coefficient can be guaranteed with a low expansion coefficient.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Wollastonite (CaSiO3) with a structure in the form of needles is added as a filler to the phenol resin moulding compound for the supporting body of the sliprings and of the commutator laminates in order to produce an asbestos-free slipring arrangement and commutator arrangement.

Description

Die Erfindung bezieht sich auf einen Schleifring- bzw. Kommutatormotor gemäß Oberbegriff des Anspruchs 1; ein derartiger Kommutatormotor ist z.B. durch die EP-A1-0 482 235 bekannt.The invention relates to a slip ring or commutator motor according to the preamble of claim 1; such a commutator motor is e.g. known from EP-A1-0 482 235.

Die bei einem Schleifring- bzw. Kommutatormotor zur Stromversorgung des Rotors von statorseitigen Bürsten beschliffenen Schleifringe bzw. Lamellen werden am Außenumfang eines radial innen auf einer Rotorwelle befestigten Tragkörpers gehalten, der üblicherweise aus einer Preßmasse, insbesondere einer Phenolharz-Preßmasse, besteht und dem als Streckmaterial Füllstoffe beigefügt sind. Es ist bekannt, als Füllstoff Asbestfasern beizumischen, die sich durch eine hohe Temperaturstabilität, mechanische Festigkeit, gute Anbindungsfähigkeit und hohe Fülldichte auszeichnen, jedoch wegen ihrer geringen Bioverträglichkeit unerwünscht, in fortschreitendem Maße sogar vom Gesetzgeber verboten sind.The slip rings or lamellas ground in a slip ring or commutator motor for supplying power to the rotor by stator-side brushes are held on the outer circumference of a support body fastened radially on the inside on a rotor shaft, which usually consists of a molding compound, in particular a phenolic resin molding compound, and this as an expanded material Fillers are added. It is known to add asbestos fibers as fillers, which are characterized by high temperature stability, mechanical strength, good connectivity and high filling density, but are undesirable because of their low biocompatibility, and are even increasingly prohibited by law.

Zur vollständigen bzw. teilweisen Substitution von Asbest hat man den Einsatz von Glasfaser- bzw. Glaskugel-Füllstoffen versucht, die jedoch insbesondere auf Grund ihrer geringeren Elastizität, ihres nicht vorhandenen Wasserhaushalts, ihrer geringen Schweißtemperaturbeständigkeit sowie der schlechten Anbindungsmöglichkeit zur übrigen Preßmasse bzw. zu den Kupfersegmenten des Schleifringes bzw. der Lamellen und aufgrund ihres großen Ausdehnungskoeffizienten nicht zu den erwünschten Erfolgen geführt haben.For the complete or partial substitution of asbestos, attempts have been made to use glass fiber or glass ball fillers, which, however, in particular due to their lower elasticity, their non-existent water balance, their low welding temperature resistance and the poor connection possibility to the other molding compound or to Copper segments of the slip ring or the lamellae and due to their large expansion coefficient have not led to the desired success.

Es ist Aufgabe der vorliegenden Erfindung, einen Asbest-Ersatzfüllstoff anzugeben, der trotz guter Bioverträglichkeit die bisher von Asbest gezeigten spezifischen vorteilhaften Materialeigenschaften erfüllt und hinsichtlich seines Aufwandes auch zum Einsatz bei als Massenserienprodukt hergestellten Schleifring- bzw. Kommutatormotoren verwendbar ist.It is an object of the present invention to provide an asbestos replacement filler which, despite good biocompatibility, fulfills the specific advantageous material properties previously shown by asbestos and in terms of its outlay can also be used for slip ring or commutator motors manufactured as a mass production product.

Die Lösung dieser Aufgabe gelingt bei einem Schleifring- bzw. Kommutatormotor der eingangs genannten Art dadurch, daß der Preßmasse als Füllstoff Wollastonit, vorzugsweise nadelförmig strukturiert, in einem Anteil von ca. 7% bis 70% des gesamten Füllstoffanteils (100%) beigemischt ist. Das Länge/Dicke-Verhältnis der Nadeln des nadelförmig strukturierten Wollastonit-Füllstoffanteils liegt vorzugsweise im Bereich zwischen 30:1 bis 35:1.This problem is solved in a slip ring or commutator motor of the type mentioned above in that the molding compound is admixed with wollastonite, preferably in the form of a needle, in a proportion of approximately 7% to 70% of the total proportion of filler (100%). The length / thickness ratio of the needles of the needle-shaped structured wollastonite filler fraction is preferably in the range between 30: 1 to 35: 1.

Der verbleibende Füllstoffanteil wird vorzugsweise durch eine entsprechende Beigabe von Glasfasern und/oder Glaskugeln gestellt.The remaining filler content is preferably provided by an appropriate addition of glass fibers and / or glass balls.

Wollastonit ist ein Calciumsilicat (CaSiO₃) und gehört zur Gruppe der natürlich vorkommenden Kettensilikate, wobei die Kettenrichtung der (SiO₄)-Tetraeder der Längserstreckung der nadelförmig strukturierten Wollastonitpartikel entspricht. Die kristallographische Eigenschaft des Wollastonites bedingt eine hohe mechanische Festigkeit, wobei die Zugfestigkeit und der Elastizitätsmodul bedeutend höher als der des für die Preßmasse vorgesehenen Phenolharzes liegen. In überraschender Weise hat sich gezeigt, daß darüberhinaus gegenüber ersatzweise vorgesehenen Füllstoffen in Form von Glasfasern bzw. Glaskugeln der Wollastonit-Füllstoff sowohl eine höhere Temperaturstabilität und höhere Fülldichte sowie auch eine hohe Wärmeleitfähigkeit und gute Schweißtemperaturbeständigkeit mit hoher thermischer Stabilität beim Verschweißen der Kommutatorhaken sowie eine nur geringe Schwindung und einen kleinen Ausdehnungskoeffizienten bei geringem Ausdehnungskoeffizienten gewährleistet werden kann.Wollastonite is a calcium silicate (CaSiO₃) and belongs to the group of naturally occurring chain silicates, the chain direction of the (SiO₄) tetrahedra corresponding to the longitudinal extension of the needle-shaped structured wollastonite particles. The crystallographic property of wollastonite requires a high mechanical strength, whereby the tensile strength and the modulus of elasticity are significantly higher than that of the phenolic resin intended for the molding compound. Surprisingly, it has been shown that, in addition to fillers provided in the form of glass fibers or glass balls, the wollastonite filler has both higher temperature stability and higher filling density, as well as high thermal conductivity and good welding temperature resistance with high thermal stability when welding the commutator hooks, and only one low shrinkage and a small expansion coefficient can be guaranteed with a low expansion coefficient.

Diese vorgenannten vorteilhaften spezifischen Eigenschaften sind verbunden mit einer hohen Bioverträglichkeit aufgrund einer schnellen Abbaubarkeit von in die menschliche Lunge gelangten Fasern innerhalb von 8 bis 15 Tagen im Vergleich zu einem Zeitraum von etwa 100 Tagen bei Glasfasern bzw. von 40.000 bis 60.000 Tagen bei bisher zur Anwendung kommenden Asbestmaterialen.These aforementioned advantageous specific properties are associated with a high level of biocompatibility due to the rapid degradability of fibers that have entered the human lungs within 8 to 15 days compared to a period of about 100 days for glass fibers or from 40,000 to 60,000 days in the past upcoming asbestos materials.

Durch eine vorteilhafte Oberflächenbehandlung der Wollastonit-Partikel mit einer Beschichtung durch Silanilierung, insbesondere durch Epoxi-, Amino- und Methacrylsilanen kann insbesondere die Anbindungsfähigkeit zwischen der Harzmatrix der für den Tragkörper vorgesehenen Phenolharz-Preßmasse und dem Füllstoff verbessert werden.By means of an advantageous surface treatment of the wollastonite particles with a coating by silanilation, in particular by epoxy, amino and methacrylic silanes, in particular the connectivity between the resin matrix of the phenolic resin molding compound intended for the support body and the filler can be improved.

Claims (6)

Schleifring- bzw. Kommutatormotor mit einer Füllstoff enthaltenden Schleifring- bzw. Kollektorpreßmasse, insbesondere Phenolharz-Preßmasse, als Träger für eine von Kontakten beschliffene Schleifring- bzw. Lamellenfläche, gekennzeichnet durch einen Wollastonit-Füllstoff mit einem Anteil von ca. 7% - 70% an der gesamten Füllstoffmenge.Slip ring or commutator motor with a filler-containing slip ring or collector molding compound, in particular phenolic resin molding compound, as a carrier for a slip ring or lamella surface ground by contacts, characterized by a wollastonite filler with a proportion of approx. 7% - 70% on the total amount of filler. Schleifring- bzw. Kommutatormotor nach Anspruch 1, gekennzeichnet durch einen nadelförmig strukturierten Wollastonit-Füllstoff.Slip ring or commutator motor according to claim 1 , characterized by a needle-shaped structured wollastonite filler. Schleifring- bzw. Kommutatormotor nach Anspruch 2, gekennzeichnet durch ein Länge/Dicke-Verhältnis (L/D) der Nadeln des nadelförmig strukturierten Wollastonit-Füllstoff im Bereich von 30:1 bis 35:1.Slip ring or commutator motor according to claim 2 , characterized by a length / thickness ratio (L / D) of the needles of the needle-shaped structured wollastonite filler in the range from 30: 1 to 35: 1. Schleifring- bzw. Kommutatormotor nach einem der Ansprüche 1-4, gekennzeichnet durch einen mit einer Schlichte oberflächenvorbehandelten Wollastonit-Füllstoff.Slip ring or commutator motor according to one of Claims 1-4, characterized by a wollastonite filler which has been surface-treated with a size. Schleifring- bzw. Kommutatormotor nach Anspruch 4, gekennzeichnet durch eine Silanilierungs-Beschichtung des Wollastonit-Füllstoff.Slip ring or commutator motor according to claim 4, characterized by a silanilization coating of the wollastonite filler. Schleifring- bzw. Kommutatormotor nach einem der Ansprüche 1-5, gekennzeichnet durch einen weiteren Füllstoff in Form von Glasfasern und/oder Glaskugeln.Slip ring or commutator motor according to one of claims 1-5, characterized by a further filler in the form of glass fibers and / or glass balls.
EP94116339A 1993-10-29 1994-10-17 Slip ring or commutator motor. Ceased EP0651473A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9316606U DE9316606U1 (en) 1993-10-29 1993-10-29 Slip ring or commutator motor
DE9316606U 1993-10-29

Publications (2)

Publication Number Publication Date
EP0651473A2 true EP0651473A2 (en) 1995-05-03
EP0651473A3 EP0651473A3 (en) 1996-07-10

Family

ID=6900088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94116339A Ceased EP0651473A3 (en) 1993-10-29 1994-10-17 Slip ring or commutator motor.

Country Status (3)

Country Link
EP (1) EP0651473A3 (en)
DE (1) DE9316606U1 (en)
SK (1) SK283415B6 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9415851U1 (en) * 1994-09-30 1995-08-03 Siemens Ag Slip ring or commutator motor

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3652761A (en) * 1969-09-04 1972-03-28 Corning Glass Works Immunochemical composites and antigen or antibody purification therewith
JPS5616578A (en) * 1979-07-23 1981-02-17 Nisshinbo Ind Inc Friction material
JPS5964647A (en) * 1982-10-06 1984-04-12 Idemitsu Petrochem Co Ltd Polypropylene resin composition
EP0131544A1 (en) * 1983-07-08 1985-01-16 Ciba-Geigy Ag Electrically conductive filling agent
JPS61151260A (en) * 1984-12-25 1986-07-09 Sumitomo Bakelite Co Ltd Phenolic resin molding material for commutator
JPS62149756A (en) * 1985-09-09 1987-07-03 Mitsubishi Metal Corp Electrically conductive resin composition
JPS6333435A (en) * 1986-07-28 1988-02-13 Mitsubishi Metal Corp Electrically conductive filler
JPS63108033A (en) * 1986-10-23 1988-05-12 Kyushu Refract Co Ltd Inorganic fiber-reinforced resin composite material
US4963610A (en) * 1988-03-28 1990-10-16 Ems-Inventa Ag Flame-resistant polyamide molding composition and method of manufacture thereof
JPH03167248A (en) * 1989-11-27 1991-07-19 Sumitomo Bakelite Co Ltd Phenol resin molding material

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3652761A (en) * 1969-09-04 1972-03-28 Corning Glass Works Immunochemical composites and antigen or antibody purification therewith
JPS5616578A (en) * 1979-07-23 1981-02-17 Nisshinbo Ind Inc Friction material
JPS5964647A (en) * 1982-10-06 1984-04-12 Idemitsu Petrochem Co Ltd Polypropylene resin composition
EP0131544A1 (en) * 1983-07-08 1985-01-16 Ciba-Geigy Ag Electrically conductive filling agent
JPS61151260A (en) * 1984-12-25 1986-07-09 Sumitomo Bakelite Co Ltd Phenolic resin molding material for commutator
JPS62149756A (en) * 1985-09-09 1987-07-03 Mitsubishi Metal Corp Electrically conductive resin composition
JPS6333435A (en) * 1986-07-28 1988-02-13 Mitsubishi Metal Corp Electrically conductive filler
JPS63108033A (en) * 1986-10-23 1988-05-12 Kyushu Refract Co Ltd Inorganic fiber-reinforced resin composite material
US4963610A (en) * 1988-03-28 1990-10-16 Ems-Inventa Ag Flame-resistant polyamide molding composition and method of manufacture thereof
JPH03167248A (en) * 1989-11-27 1991-07-19 Sumitomo Bakelite Co Ltd Phenol resin molding material

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 067 (C-053), 7.Mai 1981 & JP-A-56 016578 (NISSHINBO IND INC), 17.Februar 1981, *
PATENT ABSTRACTS OF JAPAN vol. 008, no. 162 (C-235), 26.Juli 1984 & JP-A-59 064647 (IDEMITSU SEKIYU KAGAKU KK), 12.April 1984, *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 350 (C-387), 26.November 1986 & JP-A-61 151260 (SUMITOMO BAKELITE CO LTD), 9.Juli 1986, *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 379 (C-463), 10.Dezember 1987 & JP-A-62 149756 (MITSUBISHI METAL CORP), 3.Juli 1987, *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 242 (C-510), 8.Juli 1988 & JP-A-63 033435 (MITSUBISHI METAL CORP), 13.Februar 1988, *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 353 (C-530), 21.September 1988 & JP-A-63 108033 (KYUSHU REFRACT CO LTD), 12.Mai 1988, *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 409 (C-0876), 18.Oktober 1991 & JP-A-03 167248 (SUMITOMO BAKELITE CO LTD), 19.Juli 1991, *

Also Published As

Publication number Publication date
EP0651473A3 (en) 1996-07-10
DE9316606U1 (en) 1994-11-24
SK124594A3 (en) 1995-07-11
SK283415B6 (en) 2003-07-01

Similar Documents

Publication Publication Date Title
DE3447411C2 (en)
DE2826114C2 (en) Carbon-carbon composites and processes for their manufacture
DE2811795C2 (en)
DE69907106T2 (en) Root anchor made from radiopaque composite materials
EP1573882B1 (en) Litz wire coils for electric machines
DE102009039457A1 (en) Conductor mechanism for use in e.g. electrical machine, has set of rectangular conductors braced by impregnating resin that comprises nano-particles, where impregnating resin is cyclo-aliphatic epoxy resin or silicone resin
EP1042758B1 (en) Method for producing insulating tapes containing mica, and the utilization thereof
EP0651473A2 (en) Slip ring or commutator motor
DE3338015A1 (en) METHOD FOR PRODUCING A PREFERRED RINGED OR CYLINDRICAL OBJECT
DE2537342A1 (en) ELECTRIC HEATING DEVICE
DE1463067A1 (en) Circuit breaker
EP0196493A2 (en) Method for diminishing the vapour diffusion in a multilayered composite insulator of synthetic material
DE102010041594A1 (en) Filler for controlling electrical potentials in transformers, generators or the like
EP0704943A1 (en) Collector or commutator
DE3832106C2 (en)
EP0391183B1 (en) Electrical insulator
DD227955A5 (en) FORMKOERPER WITH A MATRIX GAINED BY POLYACRYLNITRILE FIBERS
DE2105892B2 (en) Cast resin cable fitting
DD224806A5 (en) FORMKOERPER AND ITS MANUFACTURE
DE2213119B2 (en) High-voltage insulator made of plastic and having a shield body
DE1299357B (en) Magnetic slot lock for electrical machines
AT125009B (en) Multi-conductor high-voltage cable consisting of several single-core lead cables stranded together.
AT166990B (en) Cable for the production of metallic inserts in the barrel shells of pneumatic tires
DE683424C (en) Electric circuit breaker with arc extinguishing through self-generated extinguishing gas
DE2145157A1 (en) Polyurethane compound

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE DK IT

17P Request for examination filed

Effective date: 19951204

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE DK IT

17Q First examination report despatched

Effective date: 19961127

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19980529