EP2253049B1 - Maschine umfassend eine vorrichtung zur vermeidung der entstehung eines elektrischen lichtbogens zwischen leitenden elementen - Google Patents

Maschine umfassend eine vorrichtung zur vermeidung der entstehung eines elektrischen lichtbogens zwischen leitenden elementen Download PDF

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Publication number
EP2253049B1
EP2253049B1 EP09727855.0A EP09727855A EP2253049B1 EP 2253049 B1 EP2253049 B1 EP 2253049B1 EP 09727855 A EP09727855 A EP 09727855A EP 2253049 B1 EP2253049 B1 EP 2253049B1
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EP
European Patent Office
Prior art keywords
machine
partition wall
conductive elements
electric arc
adjacent portions
Prior art date
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Application number
EP09727855.0A
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English (en)
French (fr)
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EP2253049A2 (de
Inventor
Denis Payan
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Centre National dEtudes Spatiales CNES
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Centre National dEtudes Spatiales CNES
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
    • 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
    • H01R39/46—Auxiliary means for improving current transfer, or for reducing or preventing sparking or arcing
    • H01R39/50—Barriers placed between brushes

Definitions

  • the present invention relates to a machine comprising a device for preventing the establishment of an electric arc between two conductive elements facing each other.
  • the invention finds particular application in electrical or electronic components, such as connectors, implemented in a space environment or in conditions reproducing such an environment. However, it should be understood that the invention applies generally to electrical or electronic components to be implemented in any environment where an electric arc is likely to form between two conductive elements facing.
  • conductive elements may be, for example, connector plugs of a plug-in male connector in a female connector or printed circuit tracks
  • Such connectors may, for example, be of the type described in the patent applications CH 182180 A , FR-2 068 660 , US2006 / 0046568 and US-2003/0008542 , and in the patent U.S. 3,746,817 .
  • the male connectors may comprise plug-in conductive elements arranged opposite, in particular parallel to each other, which are separated by gaps. These plug-in elements have in common to present a stripped conductive portion which projects relative to a surface of the body of the male connector.
  • the plug-in conductor elements such as wires or pins of the male connector, are engaged in housings housed in a female connector body.
  • DE 20 2005 017012 describes an electrical connector placed on one side of a printed circuit.
  • the cover thus comprises at least one dividing wall of dielectric material interposed between two conductors.
  • a precursor phenomenon (filament, dust, ESD or electrostatic discharge, high voltage, etc.) is likely to generate between the stripped portions of two conductive elements a local plasma.
  • the latter while relaxing, will make the medium conductive and establish a short circuit between the two conductive elements.
  • an intense electric field can be the cause of the generation of such a plasma.
  • the invention therefore aims to prevent the formation of these arcs between two electrically conductive elements.
  • the invention relates to a machine according to claim 1 comprising a device for preventing the establishment of an electric arc between adjacent parts devoid of or likely to be free of electrical insulation of at least two electrically conductive elements, as well as an electrical component incorporating such a device, as defined by the claims.
  • the device according to the invention avoids the formation of arcing between the conductive elements opposite. Indeed, the dimensions of the dividing wall of dielectric material impose an electric arc that could be formed to follow a path such that the arc is unstable and can not be established between the two conductive elements.
  • the invention also protects the conductive elements from contact during handling and can thus prevent electrostatic discharges of human origin.
  • FIG. figure 1 shows a connector body 1 3 having housings 5 formed from its surface 11.
  • the connector body 1 which is illustrated in FIG. figure 1 is not equipped with the device visible on the figure 2 .
  • the housings 5 are adapted to accommodate conductive elements 7 such as pins or conductive son.
  • the conductive elements 7 consist of a conductive core 8 which is surrounded by an electrically insulating sheath 10, except at one of their ends which terminates in a stripped portion 9 intended to be received in a housing 5.
  • the bare portions 9 of the conductive elements 7 are fixed in the housing 5 by any means known to those skilled in the art, for example by welding.
  • the stripped portions 9 of the core 8 of the conductive elements 7 do not penetrate fully into the recesses 5 and each have a conductive portion projecting from a surface 11 of the body 1 of the connector 3.
  • the figure 2 shows the connector body 1 equipped with a separating partition 13 in the form of a plate or rectangular blade, made of a dielectric material, protrudes from the surface 11 of the body 1 halfway between the two conducting elements 7.
  • the partition wall 13 is fixed by its edge on the surface 11 of the body 1, or integral with it.
  • the dielectric separating partition 13 has a height h with respect to the surface 11 of the body 1.
  • the height h is at least equal to the length of the stripped portion plus a length of overhang which is at least equal to half the distance between the two conductive elements 7.
  • the plane P1 extending between the end of the sheath 10 where the conductive stripped portion 9 of one of the two elements 7 begins and the upper edge E of the partition wall 13 which is opposite the surface 11 of the body 1 forms with this surface 11 an angle ⁇ of at least 30 °.
  • the separating partition 13 prevents the establishment of an electric arc between the two stripped portions 9 of the cores of the electrical elements 7, since it imposes on the electric arc that might be formed between these stripped portions to follow a path whose radius of curvature makes this arc unstable.
  • the separating partition 13 is made of ceramic to guarantee a service life in accordance with the requirements of the standards in force, particularly in the field of the manufacture of connectors for space use.
  • the figure 4 shows a separating partition, which is disposed between two conductive elements of a component illustrated in FIG. figure 3 , such as a microprocessor, a memory card or other.
  • Component 15 differs from the connector shown in FIGS. Figures 1 and 2 in that it comprises a body 17 having a face 19 on which plug-in conductive connection elements 21, such as pins, project uniformly distributed in parallel with each other. These conductive elements 21 are intended to be received and fixed by welding or by interlocking in housings of a support device (not shown) such as a printed circuit or the like. According to this example, a separating partition 23, made of a dielectric material, is arranged between two adjacent conductive elements 21.
  • the partition walls 23 are all identical to each other. They preferably have dimensions such that at any point on their periphery they project, with respect to a line joining any point of the stripped portion of a conducting element 21 and the nearest point of the stripped portion of an adjacent conductive element, of a height h at least equal to half the distance between these two points.
  • the separating pieces 23 are attached to the surface of the body 17 of the connector 15.
  • the separating pieces 23 could also be integral with the body 17 of the connector 15.
  • FIGs 5 and 6 illustrate another example not forming part of the invention.
  • the figure 5 shows a male connector 25 and the figure 6 shows the female connector 27 associated with it.
  • the male connector 25 has plug-in connection conductor elements 29 such as pins which protrude from the surface 31 of a connector body 33 and are distributed on the surface 31 forming a grid.
  • the plug-in connection elements 29 are conductive pins each electrically connected inside the body 33 (by means not shown) to a sheathed electrical wire 36. To simplify the reading of the figure 5 , voluntarily all the feed son 36 have not been represented.
  • Conducting connecting elements 29 are adapted to be received in housings 35 formed in the female connector 27 illustrated in FIG. figure 6 .
  • the connector 25 comprises a separating partition 37 made of a dielectric material.
  • the separating partition 37 is in the form of a grid consisting of a first series of dielectric separation plates or plates 39 aligned in pairs transversely, on either side of a second series of dielectric plates or plates of separation 41 longitudinally aligned and perpendicular to the separating plates 39.
  • Each dielectric separation plate 39, 41 is disposed between two conductive elements 29 of the connector 25, so that none of the conductive elements 29 is directly opposite an adjacent conductive element 29.
  • the female connector 27 has terminals 47 (or pads) substantially of parallelepipedal shape, which project relative to a surface 45
  • the dimensions and the spatial arrangement of the terminals 47 are complementary to the dimensions and the arrangement of the spaces defined between the partition plates 39 and 41 of the dielectric partition 37 in the form of a grid. Thus, the terminals 47 can be easily introduced into said spaces.
  • the terminals 47 thus form rows in rows and in columns, and may each come opposite a conductive element 29 during the assembly of the male and female connectors 27.
  • the housings 35 in which the conductive elements 29 are inserted are formed in each of the terminals 47, near their center, and electrically connected in the body 45 (by means not shown) to the conductive wires 49 illustrated in FIG. figure 6 . Voluntarily, all the wires 49 have not been represented on the figure 6 to make it easier to read.
  • the height of the dielectric gate 37 with respect to the surface 31 is substantially equal to the height of the terminals 47.
  • the dimensions of the dielectric grid 37 are such that in every point it projects, with respect to a line joining any point of the stripped portion of a conductive element 29 and the nearest point of the stripped portion of a adjacent conductive element, of a height h at least equal to half the distance between these two points.
  • the figure 7 illustrates an embodiment according to the invention applied to a multi-electrode rotating system.
  • the figure 7 partially shows a rotary switch 51 of a machine 53 such as an electric motor or a solar generator drive mechanism.
  • Conductive elements 55 are in contact at one of their ends 57 with the contactor 51.
  • the conductive elements 55 are provided with insulating sheaths 59 which leave exposed a portion 61 of the conductive elements adjacent to their end 57.
  • separating partitions 63 made of a dielectric material are interposed between two conductive stripped portions 61 of the conductive elements facing each other.
  • the separating partitions 63 may be disks or blades forming an integral part of the contactor 51 or attached thereto, and rotating with it.
  • the dielectric separating partitions 63 completely isolate the bare portions of the adjacent conductive elements 55 from each other.
  • each separating partition 63 projects or projects beyond the stripped portions of the conductive elements 55 over a height which is at least equal to half the shortest distance separating the separating partition 63 from each of the stripped portions 61 of two adjacent conductive elements 55.
  • the protruding parts of the dielectric separating partitions 63 prevent the formation of an electric arc between the stripped parts of the conducting elements 55.
  • the partition walls 63 protrude radially from the side wall of the body 51, which makes it possible to prevent the formation of an arc whatever the position of the conductive elements 55 on the side wall of the body 51.
  • FIGS. 8 and 9 illustrate another example not forming part of the invention applied to electrical conductors which do not have a stripped portion at the beginning of their life, but which are used under conditions where the stresses are likely to reveal a risk of damage to the strand. their insulation, for example aging cracks or wear on an edge due to vibrations, which may cause the formation of an electric arc between two adjacent conductors.
  • the electrical conductors 67 comprise a conductive core 69 surrounded by an insulating sheath 71.
  • a system 73 separator conductors is constituted by a bottom 75 on which stand partitions 77, both made of dielectric material, and which define a set of parallel channels U section adapted to each receive a driver electric.
  • the separating partitions 77 each project or protrude beyond the conductive cores 69, which are likely to be more or less stripped locally by aging, by wear or accidentally for the reasons explained above, on a height which is preferably at least about half of the shortest distance separating a dividing wall 75 from each of the conductive cores 69 of two adjacent conductors 67.
  • such a height of the partitions 75 is adapted to impose an arc that could form a slope of at least about 30 ° relative to a direct path between conductive cores 69 which would be locally stripped for reasons indicated above.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Insulators (AREA)

Claims (7)

  1. Maschine (53), umfassend:
    - mindestens zwei elektrisch leitende Elemente (55);
    - einen Drehschalter (51),
    dadurch gekennzeichnet, dass der Drehschalter (51) eine Vorrichtung zur Vermeidung der Entstehung eines elektrischen Lichtbogens zwischen benachbarten Teilen ohne elektrischen Isolator (61) der elektrisch leitenden Elemente (55) aufweist;
    wobei die elektrisch leitenden Elemente (55) in Bezug auf eine Oberfläche des Drehschalters (51) vorspringend angeordnet sind;
    dadurch, dass die Vorrichtung zur Vermeidung der Entstehung eines elektrischen Lichtbogens mindestens eine Trennwand (63) aus dielektrischem Material aufweist, die zwischen den benachbarten Teilen (61) der leitenden Elemente (55) eingefügt ist, wobei die Abmessungen der Trennwand (63) angepasst sind, damit der kürzeste Weg zwischen den benachbarten Teilen (61), durch Umgehung der Trennwand (63), einer Instabilitätsgrenze eines elektrischen Lichtbogens entspricht, der zwischen den benachbarten Teilen entstehen könnte;
    und dadurch, dass die Trennwand (63) von mindestens einer Platte gebildet wird, die sich ausgehend von der Oberfläche des Drehschalters (51) erstreckt, und, senkrecht zur kürzesten Distanz (d), die die Wand jedes der benachbarten Teile (61) von den leitenden Elementen trennt, eine Höhe (h) besitzt, so dass ihr Überstand über die benachbarten Teile (61) hinaus mindestens so groß ist wie ungefähr die Hälfte der Distanz (d).
  2. Maschine (53) nach Anspruch 1, dadurch gekennzeichnet, dass die Trennwand (63) aus Keramikmaterial hergestellt ist.
  3. Maschine (53) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Trennwand (63) auf der Oberfläche befestigt ist.
  4. Maschine (53) nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass die Trennwand (63) integraler Bestandteil des Schalters (51) ist.
  5. Maschine (53) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Platte (63) im Wesentlichen die Form einer Scheibe hat.
  6. Maschine (53) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Drehschalter (51) einen Körper in Form eines Vollzylinders besitzt.
  7. Maschine (53) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass sie ein Motor oder ein Antriebsmechanismus eines Solargenerators ist.
EP09727855.0A 2008-03-14 2009-03-13 Maschine umfassend eine vorrichtung zur vermeidung der entstehung eines elektrischen lichtbogens zwischen leitenden elementen Active EP2253049B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0851657A FR2928772B1 (fr) 2008-03-14 2008-03-14 Dispositif pour prevenir l'etablissement d'un arc electrique entre deux elements conducteurs.
PCT/FR2009/050420 WO2009122072A2 (fr) 2008-03-14 2009-03-13 Dispositif pour prévenir l'établissement d'un arc électrique entre deux éléments conducteurs

Publications (2)

Publication Number Publication Date
EP2253049A2 EP2253049A2 (de) 2010-11-24
EP2253049B1 true EP2253049B1 (de) 2018-08-15

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EP09727855.0A Active EP2253049B1 (de) 2008-03-14 2009-03-13 Maschine umfassend eine vorrichtung zur vermeidung der entstehung eines elektrischen lichtbogens zwischen leitenden elementen

Country Status (4)

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US (1) US8933337B2 (de)
EP (1) EP2253049B1 (de)
FR (1) FR2928772B1 (de)
WO (1) WO2009122072A2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2980921B1 (fr) 2011-10-03 2013-10-11 Centre Nat Etd Spatiales Collecteur electrique a gaines tubulaires d'isolation mecaniquement independantes des cils.
US9385500B2 (en) 2013-08-26 2016-07-05 FCI Asia Pte. Ltd. Electrical connector including fins
EP3454574A1 (de) * 2017-09-07 2019-03-13 Widex A/S Am kopf getragene vorrichtung mit schutz vor elektrostatischer entladung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH182180A (de) * 1935-06-25 1936-01-31 Oerlikon Maschf Einrichtung zur Vermeidung von Rundfeuer bei Gleichstromkommutatormaschinen höherer Spannungen.
DE102006052211A1 (de) * 2006-11-06 2008-05-08 Siemens Ag Österreich Elektrisches Anschlusselement

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US2524939A (en) * 1948-09-09 1950-10-10 Philco Corp Integral socket and printed circuit panel
DE1279207B (de) * 1965-11-16 1968-10-03 Standard Elektrik Lorenz Ag Aus Isoliermaterial bestehender Stecksockel
CA976599A (en) * 1971-04-08 1975-10-21 Senichi Masuda Electrified particles generating apparatus
US5417594A (en) * 1994-03-07 1995-05-23 Hubbell Incorporated Male electrical plug assembly with increased electrical creepage distance between contacts
JPH0937569A (ja) * 1995-07-19 1997-02-07 Tomoaki Abiko 絶縁多層電界モータ
US6296523B1 (en) * 1998-04-28 2001-10-02 Sumitomo Wiring Systems, Ltd. Male and female connector pair and set of mating connectors
DE10106119A1 (de) * 2001-02-08 2002-09-19 Schunk Metall & Kunststoff Stromübertragungsanordnung
DE10142195A1 (de) * 2001-08-29 2003-04-24 Harting Kgaa Steckverbinder mit Isolations-und Dichtungselement
US7364451B2 (en) * 2004-02-24 2008-04-29 Ring John H Hybrid glass-sealed electrical connectors
DE202005017012U1 (de) * 2005-10-29 2006-01-12 Harting Electric Gmbh & Co. Kg Elektrische Anschlusseinrichtung für eine Leiterplatte
US7520768B2 (en) * 2007-03-15 2009-04-21 Schlumberger Technology Corporation Connector assembly for use with an electrical submersible component in a deepwater environment
US7750493B2 (en) * 2007-08-14 2010-07-06 General Electric Company Wind turbine assemblies and slip ring assemblies for wind blade pitch control motors
FR2924865B1 (fr) * 2007-12-10 2010-02-19 Integral Process Dispositif de connexion et systeme medical d'acquisition de signaux electriques equipe d'un tel dispositif de connexion

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH182180A (de) * 1935-06-25 1936-01-31 Oerlikon Maschf Einrichtung zur Vermeidung von Rundfeuer bei Gleichstromkommutatormaschinen höherer Spannungen.
DE102006052211A1 (de) * 2006-11-06 2008-05-08 Siemens Ag Österreich Elektrisches Anschlusselement

Also Published As

Publication number Publication date
WO2009122072A3 (fr) 2009-11-26
FR2928772A1 (fr) 2009-09-18
WO2009122072A2 (fr) 2009-10-08
FR2928772B1 (fr) 2014-06-13
US8933337B2 (en) 2015-01-13
EP2253049A2 (de) 2010-11-24
US20110073349A1 (en) 2011-03-31

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