EP0944938B1 - Kommutator mit armierungsring - Google Patents

Kommutator mit armierungsring Download PDF

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Publication number
EP0944938B1
EP0944938B1 EP96943938A EP96943938A EP0944938B1 EP 0944938 B1 EP0944938 B1 EP 0944938B1 EP 96943938 A EP96943938 A EP 96943938A EP 96943938 A EP96943938 A EP 96943938A EP 0944938 B1 EP0944938 B1 EP 0944938B1
Authority
EP
European Patent Office
Prior art keywords
ring
commutator
metal ring
insulating
metal
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
EP96943938A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0944938A1 (de
Inventor
Joze Potocnik
Ivan Cerin
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.)
Comtrade Handelsgesellschaft mbH
Original Assignee
Comtrade Handelsgesellschaft mbH
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 Comtrade Handelsgesellschaft mbH filed Critical Comtrade Handelsgesellschaft mbH
Publication of EP0944938A1 publication Critical patent/EP0944938A1/de
Application granted granted Critical
Publication of EP0944938B1 publication Critical patent/EP0944938B1/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
    • H01R39/04—Commutators
    • H01R39/06—Commutators other than with external cylindrical contact surface, e.g. flat commutators
    • 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

Definitions

  • the invention relates to a commutator according to the preamble of claim 1 with embedded in molding material Copper segments that have one in at least one receptacle Armoring ring arranged coaxially to the commutator rotation axis record that from a metal ring as well an insulating ring joined to the metal ring consists.
  • the invention further relates to a method according to the preamble of claim 9 for the manufacture of a such commutator, in which one of copper segments existing body with at least one receptacle for one consisting of a metal ring and an insulating ring Reinforcement ring made, the reinforcement ring on this Shot applied and the commutator then with Press material is poured.
  • commutators which are reinforced with fiberglass reinforcement rings.
  • the glass fiber ring has an advantageous elongation characteristic on and can be easily pretensioned or braced
  • further fiberglass rings can be attached to the copper holding anchor slide on directly because the reinforcement rings are also electrical Isolators are - such commutators have a weakness compared to those reinforced with steel rings Switchboards. This weakness manifests itself in the application of these commutators for highly heat-loaded motors or at Long-term operation under high temperature influences. Is too it is possible that due to some error Heat overload comes. With all heat overloads local softening of the insulation ring or Glass fiber rings occur when inexpensive resins be used. As a result, the commutator segments shift beyond the tolerance values can, reducing the life of such commutators is significantly reduced.
  • the reinforcement ring consists of at least one in cross section essentially rectangular metal ring consists of one in cross section essentially rectangular insulating ring is added.
  • the commutator is, for example, from DE-A-4302759 known.
  • This document discloses a commutator for an electric motor with a fan-shaped distribution around the circumference Copper lamellae with undercuts Inner bars in an insulating carrier made of a plastic molding compound are anchored.
  • a commutator specified in the preamble of claim 1 Art is from WO-A-95/22184 and WO-A-95/22185 known.
  • These publications deal with the Making one out of a metal ring and a glass fiber ring assembled armoring ring for commutators.
  • a metal ring with a rectangular cross section is created at the front into a rectangle that is initially rectangular in cross section Fiberglass ring pressed in; this deforms the glass fiber ring step-shaped such that a The protruding area is created, which is offset from the metal ring and rests on a radial outer surface of the metal ring, which creates a centering or flange part.
  • the generic state of the art is the 3 and 6 of WO-A-95/22184 and Figs. 3 and 7 of WO-A-95/22185 represents. It is important that the Space between the metal ring and the retaining anchor Copper segments are filled with molding material. Other than this applies to the prior art according to DE-A-43027159, thus presses a first part of the radial outer surface the holding anchor via a pressure-resistant at high temperatures Intermediate layer of the press material on the metal ring of the Reinforcing ring.
  • the present invention is based on the object specify a commutator of the type mentioned at the beginning, which with technically simple means both at high Working temperatures as well as at high speeds has further improved torsional strength, at the same time is easy to manufacture and also has the advantages of Strain behavior of the insulation ring can exploit.
  • the Another object of the invention is a method of the type mentioned at the beginning indicating the manufacture one both under high temperatures and under high ones Speeds in terms of its torsional strength enables improved commutator and at the same time Manufacturing process extremely simplified.
  • This task is done with a commutator according to the generic term of claim 1 and a manufacturing method according to solved the preamble of claim 9 in that the Support part of the insulating ring has a smaller inner diameter has than the metal ring and that one in axial Direction towards the first part of the radial outer surface the holding anchor connecting second part the support part the insulating ring independently.
  • the supporting part of the insulating ring due to its opposite the metal ring of smaller inner diameter on its total axial extent directly on the radial The outer surface of the holding anchor rests.
  • the result is an optimized multiple reinforcement system in such a way that the metal ring and the supporting part of the Isolation ring are ideally separated in terms of position; everyone Part of the radial outer surface of the retaining anchor carries the other part completely independent, everyone on his axial height of the retaining anchors functionally the force that from the effect of the centrifugal force of the copper segments evident.
  • the manufacturing method according to the present invention uses the particularly advantageous manufacturing method of the reinforcement ring at least by compressing at the front one essentially rectangular in cross section Metal ring with an initially in cross section essentially rectangular insulating ring such that the insulating ring seen from the inside out in the axial direction a supporting part and a radially outside of it subsequent and axially offset centering or flange part exists, the two integrally formed with each other are and have a step shape that the metal ring thus fitted into the step shape of the insulating ring is that at least part of the radial outer surface of the Metal ring on the radial inner surface of the flange part and an end face of the metal ring completely on one End face of the support part rests.
  • the solutions according to the invention also have the Advantage that only about each for the assembled ring half of the usual axial heights of the insulating ring and the steel or metal ring is used, what leads to considerable material savings. Since both the metal ring and the insulating ring are included relatively large dimensional tolerances are manufactured manufacturing costs for the reinforcement ring drastically lowered.
  • the insulating ring is a glass fiber ring and still inexpensive and therefore not extremely warm. heat resistant resins can be used.
  • the foregoing description is essentially a normal lamellar commutator (drum or roller commutator) relates, the invention is not limited to one limited such commutator. That's how it is possible, the solution according to the invention on a flat commutator apply, i.e. it can be the same reinforcement ring used and consistent in the recording be embedded.
  • the metal ring is annular and has a coaxially extending groove in which the engages part abutting the metal ring. This training is particularly cheap for flat commutators. Because This shape of the metal ring causes the flat commutator to tilt effectively prevented.
  • the insulating ring is stepped formed with a support part and a flange part is, the flange part axially offset in the groove of the Metal ring engages, the space between the inner circumferential surface of the metal ring and that of the axis of rotation Adjacent arranged from copper segments with pressed material is filled, which is a part of the insulating body of the flat commutator is.
  • the metal ring is very easy to manufacture, for example by is punched out of a sheet. This is due to the low axial height of the metal ring possible.
  • the metal ring can also be from a metal tube be cut to length. Here, too, is the comparatively low one axial height is advantageous because it is made of a metal tube more metal rings can be separated with a given length can.
  • the insulating ring is preferably used as a glass fiber ring produced by winding accordingly of glass fibers with the addition of synthetic resin or by separation is made from a glass fiber tube.
  • the metal ring is formed in the form of an annular disk and is coaxial extending groove, in which the on the metal ring adjacent part can intervene when pressed together. there the cross section of this metal ring is higher Section modulus.
  • this groove is formed in such a way that an annular one on the opposite side of the metal ring Process arises.
  • Another advantage of the commutator according to the invention is that the reinforcement ring on both sides of the ring can be directly based on the copper segments.
  • An additional advantage of this commutator according to the invention is that only the support part of the insulating ring is biased independently of the metal ring.
  • FIG. 1 shows a partial cross section through a commutator 10, whose copper segments 26 are cast in a molding material 12 or are embedded and about an axis of rotation 14 in Operation of the commutator 10 can rotate.
  • the commutator 10 is at least on one, preferably on both ends with a reinforcing ring 16, which consists of a metal ring 18th and an insulating ring 20.
  • the reinforcement ring 16 from a receptacle present in the copper segments 26 15 added.
  • the receptacle 15 is in this embodiment groove-shaped and is formed by undercuts formed in the individual copper segments 26.
  • a glass fiber ring 20 is preferred as an insulating ring.
  • the copper segment 26 points on its axis of rotation 14 facing side a retaining anchor 28 which is part of the Recording 15 for the reinforcing ring 16 forms.
  • the glass fiber ring 20 is of this type built up in steps that it has a supporting part 22, which bears against the radial outside of the holding anchor 28, as well as at the base of the receptacle 15.
  • the support member 22 is only on the radial outside of the holding anchor 28.
  • a centering or flange part is connected to the support part 22 24 of the glass fiber ring 20 in such a way that this flange part 24 is axially offset to the support member 22 and thus one Has step shape. Furthermore, the radial outside of the Flange portion 24 on the radially inward surface of the copper segment 26.
  • the metal ring 18 is received so that its radial Outer surface partially abuts the flange part 24, while its axially inward face surface lies completely against the support part 22. Between the radial inner surface of the metal ring 18 and the radial An outer surface of the holding anchor 28 forms a space is, this can be done with an intermediate layer 30 made of pressed material 12 must be completed.
  • the axial outer surface forms of the anchor 28 seen from the outside inwards a first Part a, through which the holding anchor 28 by means of at high temperatures pressure-resistant intermediate layer 30 of the molding material 12 presses on the metal ring 18 while an inside of it subsequent second part b essentially on the radial Inner surface of the support member 22 abuts.
  • FIG. 2 shows a partial cross section of a flat commutator 110 depicting a second embodiment of the invention forms, however, the reinforcement ring shown in Fig.1 used.
  • Fig.2 those with the one shown in Fig.1 were Embodiment same parts with the same, however Reference number increased by 100 to aid understanding facilitate.
  • the flat commutator 110 shown in FIG. 2 consists of a cross section L-shaped copper segments 126, with the brush tread perpendicular to a rotation axis 114 of the face commutator 110 runs. Run parallel to the axis of rotation 114 Retaining anchors 128 of the copper fins 126 that together form a receptacle 115 for a reinforcement ring 116.
  • the reinforcing ring 116 is made up of an insulating ring 120 and a Metal ring 118 formed. It also consists in this Example of the insulating ring 120 made of a glass fiber ring.
  • the glass barrel ring 120 consists of a supporting part 122, which is on both the inward surface of the Holding anchors 128, as well as on the brush tread facing away Surface of the copper segment 126 rests.
  • the glass fiber ring 120 is also of 2 shows a centering or flange part 124 axially offset, that the glass fiber ring 120 is a stage for receiving a Metal ring 118 forms.
  • first part a and also a second part Part b which correspond to the same areas of Figure 1, over which the centrifugal force of the holding armature 128 transferred to the metal ring 118 or the glass fiber ring 120 becomes.
  • the face commutator 110 is made of pressed material 112 potted or pressed.
  • FIG. 3 shows a further embodiment of an inventive Commutators, here flat commutators 210, shown a reinforcing ring 216 in a receptacle 215 having. Furthermore, the same will be increased, but by 100 Reference numbers from Fig.2 used.
  • the metal ring 218 of the third embodiment has one changed form on that it was designed in the form of an annular disk and is coaxial with the axis of rotation 214 and groove 234 facing the brush tread, in which is part of a centering or flange part 224 of a Isolating ring 220 engages.
  • the support part 222 the flange part 224 adjoins in a stepped, axially offset manner, whose cantilevered area engages in the groove 234.
  • the section adjoining the flange part 224 radially on the outside the metal ring 218 is used for additional support the sections of the copper segments forming the brush running surface 226. This also increases the surface area which can adhere to the Pressstoff212.
  • the reinforcement ring 16, 116 and 216 is produced by compressing at least one cross-section at the end essentially rectangular metal ring 18,118 and 218 with the substantially rectangular cross section Isolierring 20,120 and 220. This happens so that at least one flange part 24, 124 and 224 of the insulating ring 20, 120 and 220 in the axial direction of the commutator 10, 110 and 210 is moved from the inside out and the metal ring 18, 118 or 218 on its radial outer surface or engages in the groove 234.
  • the production of the metal ring is preferably so performed that a corresponding metal ring from a sheet 18,118 is punched out. This is possible because the axial height of the metal rings 18, 118 and 218 comparatively is low. Furthermore, the metal ring 18, 118 and 218 can also be cut to length from a metal pipe, due to the low axial height comparatively more metal rings 18,118 and 218 can be separated from a pipe of given length.
  • the production of the insulating ring is also very simple, in particular if a glass fiber ring 20, 120 and 220 is used.
  • This glass fiber ring 20, 120 and 220 can either by appropriate winding of glass fibers under Supply of synthetic resin or by removing an appropriate one Piece of a fiberglass tube, here, too, due to the low axial height Glass fiber rings separated from the glass fiber tube with a given length can be.
  • the reinforcement ring 16, 116 and 216 is produced by simply pressing the previously together with the corresponding ones End faces collapsed rings, without any exert axial tension.
  • the two rings are just moved axially relative to each other, the corresponding Flange part 24, 124 and 224 of the former rectangular Cross section of the glass fiber ring 20, 120 or 220 usually shifted relative to the metal ring 18, 118 or 218 becomes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Manufacture Of Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
EP96943938A 1996-12-12 1996-12-12 Kommutator mit armierungsring Expired - Lifetime EP0944938B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/EP1996/005576 WO1998026478A1 (de) 1996-12-12 1996-12-12 Kommutator mit armierungsring
FR9715463A FR2772196B3 (fr) 1996-12-12 1997-12-08 Collecteur comprenant des segments en cuivre dans une matiere comprimee

Publications (2)

Publication Number Publication Date
EP0944938A1 EP0944938A1 (de) 1999-09-29
EP0944938B1 true EP0944938B1 (de) 2002-05-08

Family

ID=26070185

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96943938A Expired - Lifetime EP0944938B1 (de) 1996-12-12 1996-12-12 Kommutator mit armierungsring

Country Status (12)

Country Link
US (1) US6157108A (da)
EP (1) EP0944938B1 (da)
JP (1) JP3382253B2 (da)
KR (1) KR100386008B1 (da)
AT (1) ATE217457T1 (da)
BR (1) BR9612814A (da)
DE (1) DE59609195D1 (da)
DK (1) DK0944938T3 (da)
ES (1) ES2175172T3 (da)
FR (1) FR2772196B3 (da)
SI (1) SI0944938T1 (da)
WO (1) WO1998026478A1 (da)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2233518C2 (ru) * 2002-03-19 2004-07-27 Донник Валерий Иванович Коллектор электрических машин и способ его изготовления
JP3972729B2 (ja) * 2002-05-23 2007-09-05 株式会社デンソー 直流モータおよびエンジン始動装置
FR2912847B1 (fr) * 2007-02-20 2009-05-01 Valeo Equip Electr Moteur Collecteur pour machine electrique tournante, notamment un demarreur de vehicule automobile
DE102007051583A1 (de) * 2007-10-29 2009-04-30 Robert Bosch Gmbh Verfahren zum Herstellen eines Kommutatorrings für einen Rollkommutator einer Elektromaschine, sowie Elektromaschine
GB0800464D0 (en) * 2008-01-11 2008-02-20 Johnson Electric Sa Improvement in or relating to a commutator
CN105811207A (zh) * 2016-05-24 2016-07-27 薛瑞华 槽型换向器
CN105811206A (zh) * 2016-05-24 2016-07-27 薛瑞华 钩型换向器
CN105790037A (zh) * 2016-05-24 2016-07-20 薛瑞华 一种换向器制作工艺

Family Cites Families (32)

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DE599911C (de) * 1931-11-01 1934-07-11 Heinrich Menke Jr Herstellung von Kollektoren mit in eine Isoliermasse eingebetteten Kupfersegmenten
DE918458C (de) * 1941-03-22 1954-09-27 Siemens Ag Lamellenbefestigung fuer Kommutatoren, insbesondere fuer elektrische Maschinen
DE1056256B (de) * 1956-03-26 1959-04-30 Bisterfeld & Stolting Vorrichtung zur Herstellung von Kollektoren fuer elektrische Maschinen
DE1155528B (de) * 1959-04-03 1963-10-10 Bosch Gmbh Robert In einer Pressform hergestellter Kollektor fuer elektrische Maschinen und Verfahren zu seiner Herstellung
FR1264476A (fr) * 1959-11-23 1961-06-23 Acec Collecteur radial pour machines électriques
US3253172A (en) * 1962-03-05 1966-05-24 Dayton Prec Corp Sub-flush commutator
CH464334A (de) * 1968-02-21 1968-10-31 Siemens Ag Kommutator für elektrische Maschinen und Verfahren zum Herstellen eines solchen
CH506897A (de) * 1970-04-20 1971-04-30 Ganz Villamossagi Muevek Kommutator für umlaufende elektrische Maschinen und Verfahren zum Herstellen desselben
US4056882A (en) * 1973-10-05 1977-11-08 Airscrew Howden Limited Method of making a dimensionally stable commutator
JPS56136159A (en) * 1980-03-28 1981-10-24 Toyo Electric Mfg Co Ltd Manufacture of mold commutator
DE3048470C2 (de) * 1980-12-22 1992-03-05 Kautt & Bux Kg, 7000 Stuttgart Kommutator und Verfahren zu seiner Herstellung
DE3245699A1 (de) * 1982-12-10 1984-06-14 Kautt & Bux Kg, 7000 Stuttgart Kommutator und verfahren zu seiner herstellung
US4559464A (en) * 1983-06-27 1985-12-17 General Electric Company Molded commutator and method of manufacture
DE3714098A1 (de) * 1987-04-28 1988-11-10 Kautt & Bux Kg Kommutator fuer maschinen kleiner bis mittlerer groesse und verfahren zu seiner herstellung
DE3823845A1 (de) * 1988-07-14 1990-01-18 Kautt & Bux Kg Kommutator und verfahren zu seiner herstellung
US5008577A (en) * 1988-10-13 1991-04-16 Johnson Electric S.A. Assembled commutator with heat-resisting ring
JPH0771387B2 (ja) * 1990-05-31 1995-07-31 株式会社マキタ 整流子
FR2670334A1 (fr) * 1990-12-06 1992-06-12 Cheveux Yves Collecteur moule pour machine tournante electrique du type tambour.
US5602438A (en) * 1991-02-28 1997-02-11 Robert Bosch Gmbh Roll commutator for electric motors and dynamos, and method of manufacturing it
GB9118086D0 (en) * 1991-08-22 1991-10-09 Johnson Electric Sa A cylindrical carbon segment commutator
DE4201593C2 (de) * 1992-01-22 1999-06-10 Bosch Gmbh Robert Kommutator für elektrische Maschinen und Verfahren zu seiner Herstellung
GB9217259D0 (en) * 1992-08-14 1992-09-30 Johnson Electric Sa A planar carbon segment commutor
DE9321246U1 (de) * 1993-02-01 1996-09-26 Friedrich Nettelhoff KG Spezialfabrik für Kleinkollektoren, 58708 Menden Kollektor und Armierungsring hierzu
SI9300660A (en) * 1993-12-16 1995-06-30 Kolektor D O O Idrija Commutator for small and midle electric machines and process for making it
WO1995022184A1 (de) * 1994-02-10 1995-08-17 Comtrade Handelsgesellschaft Mbh Armierungsring für rotationskörper und verfahren zu seiner herstellung
JP3313508B2 (ja) * 1994-04-25 2002-08-12 株式会社ミツバ コミテータ
DE19530051C2 (de) * 1995-08-16 2002-02-07 Kirkwood Ind Gmbh Steckkommutator
US5925962A (en) * 1995-12-19 1999-07-20 Walbro Corporation Electric motor commutator
US5925961A (en) * 1996-04-05 1999-07-20 Sugiyama Seisakusyo Co., Ltd. Plane carbon commutator and its manufacturing method
GB9614485D0 (en) * 1996-07-10 1996-09-04 Johnson Electric Sa A miniature motor
US5912523A (en) * 1997-10-03 1999-06-15 Mccord Winn Textron Inc. Carbon commutator
US5932949A (en) * 1997-10-03 1999-08-03 Mccord Winn Textron Inc. Carbon commutator

Also Published As

Publication number Publication date
FR2772196B3 (fr) 1999-10-15
WO1998026478A1 (de) 1998-06-18
HK1023856A1 (en) 2000-09-22
ES2175172T3 (es) 2002-11-16
JP2001505713A (ja) 2001-04-24
KR20000057492A (ko) 2000-09-15
BR9612814A (pt) 2000-05-02
KR100386008B1 (ko) 2003-06-09
FR2772196A3 (fr) 1999-06-11
US6157108A (en) 2000-12-05
DK0944938T3 (da) 2002-07-01
EP0944938A1 (de) 1999-09-29
DE59609195D1 (de) 2002-06-13
JP3382253B2 (ja) 2003-03-04
ATE217457T1 (de) 2002-05-15
SI0944938T1 (en) 2002-10-31

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