EP2253049A2 - Dispositif pour prevenir l'etablissement d'un arc electrique entre deux elements conducteurs - Google Patents
Dispositif pour prevenir l'etablissement d'un arc electrique entre deux elements conducteursInfo
- Publication number
- EP2253049A2 EP2253049A2 EP09727855A EP09727855A EP2253049A2 EP 2253049 A2 EP2253049 A2 EP 2253049A2 EP 09727855 A EP09727855 A EP 09727855A EP 09727855 A EP09727855 A EP 09727855A EP 2253049 A2 EP2253049 A2 EP 2253049A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- conductive elements
- partition
- electric arc
- separating partition
- separating
- 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
Links
- 238000010891 electric arc Methods 0.000 title claims abstract description 17
- 238000005192 partition Methods 0.000 claims abstract description 45
- 239000003989 dielectric material Substances 0.000 claims abstract description 9
- 238000010292 electrical insulation Methods 0.000 claims abstract description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 239000004020 conductor Substances 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
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
- 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 device for preventing recovery 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 generally applies to electrical or electronic components intended to be implemented in any environment where an electric arc is likely to form between two conductive elements facing each other.
- 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 patent applications FR-2 068 660, US2006 / 0046568 and US-2003/0008542, and in US-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.
- 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 device for preventing the establishment of an electric arc between adjacent parts that are devoid of or likely to be free of electrical insulation from at least two electrically conductive elements, this device being remarkable in that it comprises at least one dividing wall of dielectric material interposed between said adjacent portions of said conductive elements, the dimensions of said separating partition being adapted so that the shortest path between said adjacent parts, bypassing said separating partition, corresponds to a threshold of instability of an electric arc that can be established between said adjacent parts.
- 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.
- said separating partition has, perpendicularly to the shortest distance separating said partition from each of said adjacent portions of said conductive elements, a height such that its overflow beyond said adjacent portions is at least equal to approximately half of said distance, which amounts to imposing a bow likely to form a slope of at least about 30 ° with respect to a direct path between the adjacent portions devoid of electrical insulation of the conductive elements;
- said separating partition is made of ceramic material; in the case where said conductive elements are arranged projecting with respect to a surface of an electrical component, said separating partition consists of at least one plate extending from said surface;
- said component comprises a plurality of conductive elements distributed in a grid on said surface
- said separating partition consists of a set of plates forming a grid
- said grid consists of a set of cells adapted to respectively receive said pads;
- said separating partition is fixed on said surface
- said separating partition is integral with a housing of said component; -
- said plate has substantially the shape of a disk.
- the invention also relates to a remarkable electrical component in that it comprises at least one device as defined above to prevent the establishment of an electric arc.
- FIG. 1 shows schematically and in section two conductive elements of a connector
- FIG. shows schematically and in section, an application of an embodiment of the device according to the invention to the two conducting elements of the connector illustrated in FIG. 1
- FIG. 3 is a partial perspective view of a connector equipped with 4 is a partial perspective view of the connector of FIG. 3 equipped with the device according to the invention
- FIG. 5 illustrates another embodiment of the device according to the invention applied to a male connector different from that 1 and 3, said device and said connector being shown in perspective
- FIG. 6 is a perspective view of a female connector. adapted to be connected to the male connector illustrated in FIG. 5, FIG.
- FIG. 7 is a schematic partial sectional view of another embodiment of the device according to the invention applied to a multi-electrode rotating system
- FIGS. and 9 are schematic perspective views of a separator system according to another embodiment of the invention.
- Figures 1 and 2 show a connector body 1 having housing 5 formed from its surface 11.
- the connector body 1 which is illustrated in Figure 1 is not equipped with the device according to the invention.
- 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 part projecting from a surface 11 of the body 1 of the connector 3.
- Figure 2 shows the connector body 1 equipped with a device according to a first embodiment of the invention.
- the dielectric separating partition 13 has a height h relative 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 overflow 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 begins the conductive stripped portion 9 of one of the two elements 7 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.
- FIG. 4 shows another embodiment of a separating partition according to the invention, which is arranged between two conductive elements of a component 15 illustrated in FIG. 3, such as a microprocessor, a memory strip or the like.
- the component 15 differs from the connector illustrated in FIGS. 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 and parallel to one another. 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.
- a separating partition 23, made of a dielectric material, is disposed 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 conductive element 21 and the point closer to 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 without depart from the scope of the invention.
- Figures 5 and 6 illustrate another embodiment of the device according to the invention.
- Figure 5 shows a male connector 25 and
- Figure 6 shows the female connector 27 associated therewith.
- the male connector 25 has plug-in connection conductor elements 29 such as pins protruding from the surface
- the plug-in connection elements 29 are conductive pins each electrically connected to the interior of the body 33
- the conductive connecting elements 29 are adapted to be received in housings 35 formed in the female connector 27 illustrated in FIG. 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 aligned longitudinally and perpendicular to the separator plates 39.
- Each separation dielectric 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 element adjacent conductor 29.
- the female connector 27 has terminals 47 (or pads) substantially of parallelepipedal shape, which protrude from a surface 45
- the dimensions and the spatial arrangement of the terminals 47 are complementary dimensions and the arrangement of the spaces defined between the separating plates 39 and 41 of the dielectric separating partition 37 in the form of a grid.
- 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. 6. Voluntarily, all the wires 49 have not been shown in FIG. 6 in order to make them 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.
- FIG. 7 illustrates yet another embodiment of the device according to the invention applied to a multiple electrode rotating system.
- 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 discs or blades forming an integral part of the switch 61 or attached thereto, and rotating with it. In this way, 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 embodiment of the device according to the invention applied to electrical conductors which do not have a stripped portion at the beginning of their life, but which are used in conditions where the stresses are likely to show a risk of damage to their insulation, for example aging cracks or wear against an edge due to vibration, likely to cause the formation of an electric arc between two drivers adjacent.
- the electrical conductors 67 comprise a conductive core 69 surrounded by an insulating sheath 71.
- a conductor separator system 73 is constituted by a bottom 75 on which separating partitions 77, both of dielectric material, stand out and which define a set of U-section parallel troughs adapted to each receive a electrical conductor.
- 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 would be likely to form a slope of at least about 30 ° with respect to a direct path between conductive cores 69 which would be locally bare for reasons stated above.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
- Insulators (AREA)
Abstract
Description
Claims
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 true EP2253049A2 (fr) | 2010-11-24 |
| EP2253049B1 EP2253049B1 (fr) | 2018-08-15 |
Family
ID=40029361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09727855.0A Active EP2253049B1 (fr) | 2008-03-14 | 2009-03-13 | Machine comprenant un dispositif pour prevenir l'etablissement d'un arc electrique entre deux elements conducteurs |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8933337B2 (fr) |
| EP (1) | EP2253049B1 (fr) |
| FR (1) | FR2928772B1 (fr) |
| WO (1) | WO2009122072A2 (fr) |
Families Citing this family (3)
| 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 (fr) * | 2017-09-07 | 2019-03-13 | Widex A/S | Dispositif de type casque possédant une protection contre les décharges électrostatiques |
Family Cites Families (15)
| 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. |
| 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 |
| CN1100369C (zh) * | 1998-04-28 | 2003-01-29 | 住友电装株式会社 | 阳插接件和阴插接件对及配合插接件套件 |
| 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 |
| DE102006052211A1 (de) * | 2006-11-06 | 2008-05-08 | Siemens Ag Österreich | Elektrisches Anschlusselement |
| 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 |
-
2008
- 2008-03-14 FR FR0851657A patent/FR2928772B1/fr not_active Expired - Fee Related
-
2009
- 2009-03-13 US US12/736,140 patent/US8933337B2/en active Active
- 2009-03-13 EP EP09727855.0A patent/EP2253049B1/fr active Active
- 2009-03-13 WO PCT/FR2009/050420 patent/WO2009122072A2/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009122072A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US8933337B2 (en) | 2015-01-13 |
| FR2928772A1 (fr) | 2009-09-18 |
| WO2009122072A3 (fr) | 2009-11-26 |
| WO2009122072A2 (fr) | 2009-10-08 |
| FR2928772B1 (fr) | 2014-06-13 |
| US20110073349A1 (en) | 2011-03-31 |
| EP2253049B1 (fr) | 2018-08-15 |
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