EP0662736A1 - Drehender elektrischer Schleifring mit Mehrdrahtbürsten - Google Patents

Drehender elektrischer Schleifring mit Mehrdrahtbürsten Download PDF

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Publication number
EP0662736A1
EP0662736A1 EP94400681A EP94400681A EP0662736A1 EP 0662736 A1 EP0662736 A1 EP 0662736A1 EP 94400681 A EP94400681 A EP 94400681A EP 94400681 A EP94400681 A EP 94400681A EP 0662736 A1 EP0662736 A1 EP 0662736A1
Authority
EP
European Patent Office
Prior art keywords
brushes
strands
electrical collector
strand
rotary electrical
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
Application number
EP94400681A
Other languages
English (en)
French (fr)
Other versions
EP0662736B1 (de
Inventor
Bernard Blanchard
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.)
Everaxis Aerospace and Defence SAS
Original Assignee
Air Precision SA
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 Air Precision SA filed Critical Air Precision SA
Publication of EP0662736A1 publication Critical patent/EP0662736A1/de
Application granted granted Critical
Publication of EP0662736B1 publication Critical patent/EP0662736B1/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
    • H01R39/64—Devices for uninterrupted current collection
    • 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

Definitions

  • the invention relates to a rotating electrical collector comprising one or more slip rings and at least one multi-strand brush slidingly resting against each slip ring, so as to allow the transmission of one or more electrical signals between two pieces capable of being driven by 'a relative rotational movement.
  • Rotating electrical collectors are devices which transmit one or more electrical signals between a fixed part or stator, and a mobile part or rotor. Such devices are used in many industrial sectors, among which, by way of example only, are machine tools, air, naval and land transport, radars, etc.
  • the rotor of a rotating electrical collector comprises a number of electrically conductive rings equal to the number of electrical signals which the device must transmit. These electrically conductive rings are arranged on an electrically insulating axis and separated from each other by an electrically insulating material.
  • the stator of the rotary electrical collectors generally comprises, opposite each of the electrically conductive rings, at least two brushes each, most often made up of a single electrically conductive strand rubbing permanently on the corresponding ring. Grooves can be machined on the electrically conductive rings to guide the brushes.
  • the subject of the invention is precisely a rotary electrical collector, the brushes of which have an original design making it possible to significantly reduce the electrical noise due to vibration, compared to the single-strand brushes, while allowing a lifetime and linear speeds greater than those permitted. with one-piece brushes, without risk of creating short-circuits as a result of breakage of the brush strands, and whatever the diameter of the slip rings, that is to say in particular for very small collectors used in gyroscopic applications.
  • this result is obtained by means of an electric collector rotating with multi-strand brushes, able to be placed between two parts capable of being driven in a relative rotational movement, this collector comprising at least one slip ring. made of an electrically conductive material and carried by a first of said parts and at least one multi-strand brush made of an electrically conductive material and carried by the second part so as to be in lateral sliding support against the slip ring, according to a pressing force determined, characterized in that each multi-strand brush includes a bundle of two to five strands juxtaposed, received in an annular groove of the slip ring so that each of them is simultaneously in contact with this groove ge.
  • multi-strand brushes having a limited number of strands arranged so as to be all in contact with the annular groove of the slip ring makes it possible to significantly reduce the variations in dynamic electrical resistance to the contact surfaces, in particular by providing self-damping. vibrations. This results in a significant reduction in the electrical noise generated in the collector as well as a marked improvement in the service life and in the linear speeds likely to be achieved, compared to the collectors with single-strand brushes.
  • limiting the number of strands constituting each brush to a very low number allows these strands to be given a sufficient diameter to avoid any risk of breakage liable to produce unacceptable short circuits in the collector.
  • each multi-strand brush includes three juxtaposed strands.
  • each multi-strand brush further comprises a base comprising a receptacle in which is received one end of the bundle and a rod for adjusting the pressing force, carrying the receptacle and capable of being fixed to a terminal block of the second part.
  • This rod is advantageously a straight rod bent to form an angle which determines the pressing force.
  • the strands are welded into a blind hole in the receptacle.
  • the annular groove in which each brush is received has either a V-shaped section or a U-shaped section.
  • two brushes are preferably in sliding lateral support, in opposite directions, in each of the annular grooves.
  • the rotary electrical collector illustrated diagrammatically in FIG. 1 comprises a rotor 10 and a stator 12.
  • the rotor 10 mainly comprises an axis 14, made of an electrically insulating material, on which are mounted slip rings 16, made of an electrically conductive material. These slip rings 16 are separated from each other by electrically insulating rings 18.
  • the number of rings 16 and 18 can be arbitrary and essentially depends on the number of signals to be transmitted through the collector.
  • Electrical conductors 20 run inside the axis 14, so as to connect each of the slip rings 16 to systems capable of receiving or emitting the electrical signals traveling through the rings.
  • the axis 14 of the rotor 10 is supported by two flanges 22 of the stator 12, by means of two bearings 24.
  • the stator 12 of the rotary electrical collector further comprises a tubular part 26 which connects the two flanges 22 coaxially to the axis 14, around the slip rings 16 and the insulating rings 18.
  • the tubular part 26 carries a terminal block 27 in one electrically insulating material, supporting conductive strips.
  • This terminal block 27 supports, in a plane radially cutting each of the slip rings 16, two multi-strand brushes 28 which are arranged so as to be in sliding lateral support, in opposite directions, on the corresponding slip ring 16. More specifically, each pair of brushes 28 is supported in a guide groove 30 of the corresponding collector ring 16, this groove 30 advantageously having a V-shaped section (FIG. 3) or a U-shaped section (FIG. 4).
  • the two brushes 28 of the same pair are fixed on the terminal block 27 in two neighboring locations, so that the brushes 28 are arranged symmetrically with respect to a plane passing through the geometric axis of the axis 14.
  • each of the multi-strand brushes 28 comprises a bundle of n juxtaposed strands, n being able to vary between 2 and 5 and being advantageously equal to 3, as illustrated in the figures.
  • the strands 32 are all identical and they are made of an electrically conductive material, mechanically resistant and having good elasticity. This material can in particular consist of a metallic alloy such as a gold-based alloy.
  • each of the strands 32 of the brush 28 is advantageously between 0.15 mm and 0.25 mm. This dimension avoids any risk of breakage and, consequently, of short-circuit inside the collector, without significantly increasing the size of the brushes.
  • Each of the multi-strand brushes 28 further comprises a base 34 by which the strands 32 are mounted on the terminal block 27 of the stator.
  • This base 34 is made of an electrically conductive material such as brass.
  • a first end of the bundle formed by the strands 32 is embedded in a blind hole formed in a tubular receptacle 36 constituting a part of the base 34.
  • the base 34 further comprises a rod 38 which is aligned with the strands 32 when these the latter are embedded in receptacle 36.
  • the three strands 32 of each of the brushes are embedded in the blind hole of the receptacle 36 and they are welded to it by solder 40.
  • This solder 40 can be produced electrically.
  • the strands 32 are then rectilinear and aligned with the rod 38 as shown in solid lines in FIG. 2.
  • the rod 38 is introduced into a bore 40, of defined depth, formed in an electrically conductive contact carried by the terminal block 27.
  • the final fixing is ensured by welding as in the case of 'represented in 42.
  • the rod 38 is bent at a determined angle, in a plane perpendicular to the geometric axis of the axis 14, as shown in broken lines in FIG. 2. This angle is such that, when the rotor is in place, the strands 32 of the brush 28 are in lateral support sliding in the groove 30 of the corresponding ring 16 , by undergoing a certain outward bending which determines the bearing force.
  • the groove 30 with a V-shaped section has been replaced by a groove with a U-shaped section.
  • This characteristic makes it possible in particular to improve the distribution between the strands 32 of the loads due to the bearing force with which the brush is applied against the groove, while preserving the guiding effect provided by this groove.
  • each of the brushes 28 constitutes the best compromise, it is however possible to envisage using only two strands, in particular in the case of a groove with a U-shaped section, or on the contrary of use four to five strands. In the latter case, it is however desirable to ensure that the strands are fixed to the stator in such a way that each of the strands is in direct contact with the groove 30 machined on the slip ring 16.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
EP94400681A 1994-01-10 1994-03-30 Drehender elektrischer Schleifring mit Mehrdrahtbürsten Expired - Lifetime EP0662736B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9400165 1994-01-10
FR9400165A FR2715005B1 (fr) 1994-01-10 1994-01-10 Collecteur électrique tournant à balais multibrins.

Publications (2)

Publication Number Publication Date
EP0662736A1 true EP0662736A1 (de) 1995-07-12
EP0662736B1 EP0662736B1 (de) 1998-11-18

Family

ID=9458875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94400681A Expired - Lifetime EP0662736B1 (de) 1994-01-10 1994-03-30 Drehender elektrischer Schleifring mit Mehrdrahtbürsten

Country Status (3)

Country Link
EP (1) EP0662736B1 (de)
DE (1) DE69414687T2 (de)
FR (1) FR2715005B1 (de)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0809334A3 (de) * 1996-05-23 1998-11-18 Precisie Industrie v.d. Akker B.V. Schleifringanordnung
GB2380867A (en) * 2001-08-09 2003-04-16 Schleifring Und Appbau Gmbh Mounting device for sliding contacts
DE10215809A1 (de) * 2002-04-10 2003-11-06 Schleifring Und Appbau Gmbh Schleifkontaktanordnung
EP1317030A3 (de) * 2001-11-28 2003-12-10 Stemmann-Technik GmbH Schleifringübertrager
WO2009130277A1 (de) * 2008-04-24 2009-10-29 Schleifring Und Apparatebau Gmbh Mehrfachbürste für schleifringe
WO2012136670A1 (de) 2011-04-06 2012-10-11 Schleifring Und Apparatebau Gmbh Vibrationsfeste schleifringanordnung
DE102011101621A1 (de) 2011-05-14 2012-11-15 Ltn Servotechnik Gmbh Schleifringeinheit
DE102011077358B3 (de) * 2011-06-10 2012-12-06 Schleifring Und Apparatebau Gmbh Schwingungsunempfindlicher Bürstenblock für Schleifringe
DE102011051804A1 (de) 2011-07-13 2013-01-17 Schleifring Und Apparatebau Gmbh Schleifringbürste mit galvanischem Multischichtsystem
WO2013030563A1 (en) * 2011-08-26 2013-03-07 Overview Limited Improved slip ring apparatus and method of manufacturing a slip ring
FR2980921A1 (fr) * 2011-10-03 2013-04-05 Centre Nat Etd Spatiales Collecteur electrique a gaines tubulaires d'isolation mecaniquement independantes des cils.
WO2013107699A1 (de) * 2012-01-16 2013-07-25 Wobben Properties Gmbh Schleifringübertrager
DE102012204829A1 (de) 2012-03-12 2013-09-12 Schleifring Und Apparatebau Gmbh Schleifringbürsten in Einpresstechnik und Halterung
EP2696442A1 (de) 2012-08-06 2014-02-12 Schleifring und Apparatebau GmbH Multifunktionales Schleifringgehäuse
EP2696449A1 (de) 2012-08-06 2014-02-12 Schleifring und Apparatebau GmbH Schleifring mit integrierter Heizvorrichtung
WO2014183798A1 (en) 2013-05-17 2014-11-20 Schleifring Und Apparatebau Gmbh High current slipring for multi fiber brushes
US8986053B2 (en) 2012-03-12 2015-03-24 Schleifring Und Apparatebau Gmbh Slip ring brush and holder for slip ring brush
EP2924817A1 (de) 2014-03-27 2015-09-30 Schleifring und Apparatebau GmbH Schleifring mit aktiver Kühlung
EP3293836A1 (de) 2016-09-08 2018-03-14 Schleifring und Apparatebau GmbH Schleifringbürste umfassend strukturierte drähte
CN108321650A (zh) * 2017-12-29 2018-07-24 杭州驰宏科技有限公司 一种旋转连接器
EP3454435A1 (de) 2017-09-06 2019-03-13 Schleifring GmbH Stabilisierte golddrahtbürste für schleifringe
EP3480901A1 (de) 2017-11-06 2019-05-08 Schleifring GmbH Schwingungsdämpfende vorrichtung für gleitringbürsten
IT202000014803A1 (it) * 2020-06-19 2021-12-19 R M D Components Italia S R L Avvolgitore per ricaricare un veicolo elettrico o ibrido

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10111403B4 (de) * 2001-03-09 2008-07-24 G. Dietrich Gmbh Vorrichtung zum Übertragen bzw. zum Abnehmen von Strom auf wenigstens einen bzw. von wenigstens einem Schleifring
DE102014115291A1 (de) * 2014-10-21 2016-05-12 Ebm-Papst Mulfingen Gmbh & Co. Kg Erdungsvorrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837437A1 (de) * 1977-09-08 1979-03-22 Mabuchi Motor Co Stromabnehmer-buerstenhalterung
JPS5612837A (en) * 1979-07-13 1981-02-07 Hitachi Ltd Brush unit
EP0054380A2 (de) * 1980-12-15 1982-06-23 Litton Systems, Inc. Schleifring- und Bürstenanordnung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837437A1 (de) * 1977-09-08 1979-03-22 Mabuchi Motor Co Stromabnehmer-buerstenhalterung
JPS5612837A (en) * 1979-07-13 1981-02-07 Hitachi Ltd Brush unit
EP0054380A2 (de) * 1980-12-15 1982-06-23 Litton Systems, Inc. Schleifring- und Bürstenanordnung

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KEMKA: "Bowed Brush Slip Ring", NAVY TECHNICAL DISCLOSURE BULLETIN, vol. 10, no. 1, September 1984 (1984-09-01), ARLINGTON US, pages 103 - 106 *
PATENT ABSTRACTS OF JAPAN vol. 5, no. 63 (E - 54)<735> 28 April 1981 (1981-04-28) *

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0809334A3 (de) * 1996-05-23 1998-11-18 Precisie Industrie v.d. Akker B.V. Schleifringanordnung
GB2380867A (en) * 2001-08-09 2003-04-16 Schleifring Und Appbau Gmbh Mounting device for sliding contacts
GB2380867B (en) * 2001-08-09 2005-05-11 Schleifring Und Appbau Gmbh Mounting device for sliding contacts
US6926534B2 (en) 2001-08-09 2005-08-09 Schleifring Und Apparatebau Gmbh Mounting device for sliding contacts
EP1317030A3 (de) * 2001-11-28 2003-12-10 Stemmann-Technik GmbH Schleifringübertrager
DE10215809A1 (de) * 2002-04-10 2003-11-06 Schleifring Und Appbau Gmbh Schleifkontaktanordnung
DE10215809B4 (de) * 2002-04-10 2008-09-25 Schleifring Und Apparatebau Gmbh Schleifkontaktanordnung
WO2009130277A1 (de) * 2008-04-24 2009-10-29 Schleifring Und Apparatebau Gmbh Mehrfachbürste für schleifringe
DE102008001361A1 (de) 2008-04-24 2009-11-05 Schleifring Und Apparatebau Gmbh Mehrfachbürste für Schleifringe
US8167623B2 (en) 2008-04-24 2012-05-01 Schleifring Und Apparatebau Gmbh Multi contact brush for slip rings
WO2012136670A1 (de) 2011-04-06 2012-10-11 Schleifring Und Apparatebau Gmbh Vibrationsfeste schleifringanordnung
DE102011006820A1 (de) 2011-04-06 2012-10-11 Schleifring Und Apparatebau Gmbh Vibrationsfeste Schleifringanordnung
US9093808B2 (en) 2011-04-06 2015-07-28 Schleifring Und Apparatebau Gmbh Vibration-resistant slip ring device
DE102011101621A1 (de) 2011-05-14 2012-11-15 Ltn Servotechnik Gmbh Schleifringeinheit
EP2525448A2 (de) 2011-05-14 2012-11-21 LTN Servotechnik GmbH Schleifringeinheit
CN102790337A (zh) * 2011-05-14 2012-11-21 Ltn伺服技术有限责任公司 集电环单元
CN102790337B (zh) * 2011-05-14 2016-06-15 Ltn伺服技术有限责任公司 集电环单元
US8616897B2 (en) 2011-05-14 2013-12-31 Ltn Servotechnik Gmbh Slip-ring unit
DE102011077358B3 (de) * 2011-06-10 2012-12-06 Schleifring Und Apparatebau Gmbh Schwingungsunempfindlicher Bürstenblock für Schleifringe
WO2012168441A2 (de) 2011-06-10 2012-12-13 Schleifring Und Apparatebau Gmbh Schwingungsunempfindlicher bürstenblock für schleifringe
US9124055B2 (en) 2011-06-10 2015-09-01 Schleifring Und Apparatebau Gmbh Oscillation proof brushblock for sliprings
DE102011051804B4 (de) * 2011-07-13 2013-09-19 Schleifring Und Apparatebau Gmbh Schleifringbürste mit galvanischem Multischichtsystem
US9640928B2 (en) 2011-07-13 2017-05-02 Schleifring Und Apparatebau Gmbh Slip ring brush having a galvanic multi-layer system
CN103797660A (zh) * 2011-07-13 2014-05-14 滑动环及设备制造有限公司 一种具有多个导电层的滑环电刷
WO2013007458A2 (de) 2011-07-13 2013-01-17 Schleifring Und Apparatebau Gmbh Schleifringbürste mit galvanischem multischichtsystem
DE102011051804A1 (de) 2011-07-13 2013-01-17 Schleifring Und Apparatebau Gmbh Schleifringbürste mit galvanischem Multischichtsystem
WO2013030563A1 (en) * 2011-08-26 2013-03-07 Overview Limited Improved slip ring apparatus and method of manufacturing a slip ring
EP2579399A1 (de) * 2011-10-03 2013-04-10 Centre National d'Etudes Spatiales ( C.N.E.S.) Stromsammelleitung mit Schlauchummantelungen zur mechanischen Isolierung, die unabhängig von den Bürsten sind
FR2980921A1 (fr) * 2011-10-03 2013-04-05 Centre Nat Etd Spatiales Collecteur electrique a gaines tubulaires d'isolation mecaniquement independantes des cils.
US9356411B2 (en) 2012-01-16 2016-05-31 Wobben Properties Gmbh Slip ring assembly
WO2013107699A1 (de) * 2012-01-16 2013-07-25 Wobben Properties Gmbh Schleifringübertrager
DE102013204004A1 (de) 2012-03-12 2013-09-12 Schleifring Und Apparatebau Gmbh Schleifringbürsten in Blindniettechnik und Halterung
DE102013204004B4 (de) * 2012-03-12 2020-03-05 Schleifring Gmbh Schleifringbürsten in Blindniettechnik und Halterung
US8986053B2 (en) 2012-03-12 2015-03-24 Schleifring Und Apparatebau Gmbh Slip ring brush and holder for slip ring brush
DE102012204829A1 (de) 2012-03-12 2013-09-12 Schleifring Und Apparatebau Gmbh Schleifringbürsten in Einpresstechnik und Halterung
EP2696442A1 (de) 2012-08-06 2014-02-12 Schleifring und Apparatebau GmbH Multifunktionales Schleifringgehäuse
EP2696443A3 (de) * 2012-08-06 2014-08-06 Schleifring und Apparatebau GmbH Multifunktionales Schleifringgehäuse
EP2696443A2 (de) 2012-08-06 2014-02-12 Schleifring und Apparatebau GmbH Multifunktionales Schleifringgehäuse
EP2696449A1 (de) 2012-08-06 2014-02-12 Schleifring und Apparatebau GmbH Schleifring mit integrierter Heizvorrichtung
US10396516B2 (en) 2012-08-06 2019-08-27 Schleifring Gmbh Slipring with integrated heating unit
WO2014183798A1 (en) 2013-05-17 2014-11-20 Schleifring Und Apparatebau Gmbh High current slipring for multi fiber brushes
US9490600B2 (en) 2013-05-17 2016-11-08 Schleifring Und Apparatebau Gmbh High current slipring for multi fiber brushes
EP2924817A1 (de) 2014-03-27 2015-09-30 Schleifring und Apparatebau GmbH Schleifring mit aktiver Kühlung
US10355561B2 (en) 2014-03-27 2019-07-16 Schleifring Gmbh Slipring with active cooling
WO2015144840A1 (en) 2014-03-27 2015-10-01 Schleifring Und Apparatebau Gmbh Slipring with active cooling
EP3293836A1 (de) 2016-09-08 2018-03-14 Schleifring und Apparatebau GmbH Schleifringbürste umfassend strukturierte drähte
EP3454435A1 (de) 2017-09-06 2019-03-13 Schleifring GmbH Stabilisierte golddrahtbürste für schleifringe
US10424889B2 (en) 2017-09-06 2019-09-24 Schleifring Gmbh Stabilized gold wire brush for sliprings
EP3480901A1 (de) 2017-11-06 2019-05-08 Schleifring GmbH Schwingungsdämpfende vorrichtung für gleitringbürsten
US10833467B2 (en) * 2017-11-06 2020-11-10 Schleifring Gmbh Vibration absorbing device for slip-ring brushes
CN108321650A (zh) * 2017-12-29 2018-07-24 杭州驰宏科技有限公司 一种旋转连接器
IT202000014803A1 (it) * 2020-06-19 2021-12-19 R M D Components Italia S R L Avvolgitore per ricaricare un veicolo elettrico o ibrido

Also Published As

Publication number Publication date
DE69414687D1 (de) 1998-12-24
DE69414687T2 (de) 1999-06-10
FR2715005A1 (fr) 1995-07-13
FR2715005B1 (fr) 1996-03-22
EP0662736B1 (de) 1998-11-18

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