EP2256876B1 - Connecteur très haute puissance - Google Patents

Connecteur très haute puissance Download PDF

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Publication number
EP2256876B1
EP2256876B1 EP10163624.9A EP10163624A EP2256876B1 EP 2256876 B1 EP2256876 B1 EP 2256876B1 EP 10163624 A EP10163624 A EP 10163624A EP 2256876 B1 EP2256876 B1 EP 2256876B1
Authority
EP
European Patent Office
Prior art keywords
insulation
connector
fact
characterizing
connector 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.)
Active
Application number
EP10163624.9A
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German (de)
English (en)
French (fr)
Other versions
EP2256876A1 (fr
Inventor
Edith Mana
Emilie Fond
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.)
Radiall SA
Original Assignee
Radiall SA
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Filing date
Publication date
Application filed by Radiall SA filed Critical Radiall SA
Publication of EP2256876A1 publication Critical patent/EP2256876A1/fr
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Publication of EP2256876B1 publication Critical patent/EP2256876B1/fr
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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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles

Definitions

  • the present invention relates to a coaxial connector.
  • the invention applies more particularly to a coaxial connector for applications in the spatial field, such a connector being advantageously capable of withstanding high power at altitude, and more particularly in vacuum conditions.
  • at altitude it is necessary to understand at an altitude higher than 30000 feet.
  • vacuum conditions are at least those of the primary vacuum, or 10 5 Pa to the vacuum of space conditions, is 1.33 10 -8 Pascal.
  • High power refers to powers of the order of 400 W for frequencies of 1 or 2 GHz, 300 W at frequencies of 7 GHz and a few hundred Watts at 18 GHz.
  • the power to which the connector is subjected is for example greater than 100W.
  • the object of the invention is to meet this need and it achieves this, according to one of its aspects, thanks to a connector according to claim 1.
  • the connector is advantageously configured to withstand powers of a few hundred Watts, for example 100 Watts for frequencies between 1 and 18 GHz especially between 2 and 18 GHz at altitude and / or in vacuum conditions.
  • the connector is advantageously capable of withstanding breakdown phenomena.
  • the breakdown phenomena correspond to the avalanches of electrons generated on the metals under very low pressure conditions by very intense electromagnetic fields occur at a high level of power, these avalanches of electrons on the metals generating an electric discharge that can to be destructive.
  • the invention allows the heat dissipation of the central contact to the body of the coaxial connector through the insulator.
  • the two distinct parts of the insulator are advantageously separated by an interface having at least one portion extending obliquely with respect to the axis of the connector.
  • Such a non-collinear portion with the electric field lines which are radial in the coaxial connector may make it possible to avoid the creation of vacuum electron avalanches as well as the accumulation of charges at the interfaces between the parts of the insulator, unlike known coaxial connectors in which the interfaces between two parts of the insulation have a staircase shape.
  • the body of the coaxial connector can be made in one piece or in several separate pieces.
  • the at least two distinct parts of the insulator are advantageously made of different dielectric materials.
  • One of the parts of the insulator is advantageously made of a dielectric material having a thermal conductivity value different from that of the dielectric material of the other part of the insulator.
  • At least one of the parts of the insulation is advantageously made of a dielectric material having a thermal conductivity value greater than 1 W / m.K.
  • the insulation has a front portion, a rear portion and a middle portion between the front portion and the rear portion of the insulation along the axis of the coaxial connector.
  • the interface between the front portion and the middle portion of the insulation has at least one portion extending obliquely relative to the axis of the coaxial connector and the interface between the middle portion and the rear portion of the present insulation. at least one portion extending obliquely with respect to the axis of the coaxial connector.
  • Said portion of the interface between the front part and the middle part of the insulator and said portion of the interface between the middle part and the rear part of the insulator may or may not be parallel. These portions may be directed in directions that deviate from each other as one moves away from the central contact to the connector body. In a variant, said portions are directed in directions that approach each other as one moves away from the central contact towards the body of the connector.
  • the interface between the front part and the middle part of the insulator comprises at least one portion extending obliquely with respect to the axis of the coaxial connector and the interface between the middle part and the rear part of the the insulation is devoid of such a portion extending obliquely, or vice versa.
  • the front, middle and rear parts of the insulation are advantageously made of different dielectric materials.
  • the middle part of the insulator is advantageously made of a dielectric material having a thermal conductivity value different from that of the dielectric material of the front part and different from that of the dielectric material of the rear part.
  • the middle part of the insulator is for example made of a dielectric material having a thermal conductivity value greater than that of the dielectric material of the front part and lower than that of the dielectric material of the rear part, in order to further promote the dissipation of heat of the coaxial connector.
  • the middle and rear portions of the insulator can both be made of dielectric materials having a thermal conductivity greater than 1 W / m.K.
  • only the rear part of the insulator has such a value of thermal conductivity.
  • only the middle part of the insulator has such a value of thermal conductivity.
  • middle and rear portions are advantageously made of materials having values of linear thermal expansion coefficients lower than those of standard dielectrics commonly used, such as PTFE.
  • the front part of the insulator is for example made of a standard dielectric material to keep the coaxial connector a standard interface for coupling to a complementary connector.
  • One of the parts of the insulator is advantageously arranged to exert a holding action on a coaxial cable, in particular on the insulator of this coaxial cable, on which the connector is mounted, which allows for example to avoid the creation of a space between the insulation of the coaxial connector and the insulation of the coaxial cable, in particular in case the The insulation of the cable would shrink under the effect of thermal expansion and further reduce the risks of breakdown related to the multipactor effect.
  • the dielectric material of said portion of the insulator arranged to exert a holding action on the cable, in particular the rear part of the insulator, for example when the latter comprises two or three distinct parts, advantageously has a coefficient of linear expansion lower than the dielectric of the cable.
  • Said part may also for example have a coefficient of thermal linear expansion less than that of at least one other part of the insulator, for example the front and middle parts when the insulation has three distinct parts.
  • Said part of the connector insulation is advantageously adapted to the coaxial cable on which the connector is intended to be mounted.
  • the linear thermal expansion coefficient of said part of the insulation is for example less than 135 m / m / K (meter per meter per kelvin) in the case where the dielectric of the cable is PTFE (TEFLON).
  • the dielectric portion of the cable and the other parts of the insulation then have, for example, linear thermal expansion coefficient values greater than or equal to 135 m / m / K (meter per meter per kelvin).
  • Said part of the insulation for example the rear part of the insulation, especially when the insulation has two or three distinct parts, comprises for example two jaws intended to be applied against the insulation of the coaxial cable and a surrounding sleeve externally the jaws, which can help to ensure the retention of a semi-rigid type cable.
  • said portion of the insulator arranged to exert a holding action on the cable may comprise a threaded portion intended to be applied against the insulation of the coaxial cable, for example when the cable is of flexible type.
  • said part of the insulation is for example monobloc.
  • the interface portion extending obliquely with respect to the axis of the coaxial connector advantageously defines a conical surface.
  • a conical surface advantageously intersects the electric field lines in the coaxial connector.
  • the insulator advantageously comprises a front part, a first intermediate part, a middle part, a second intermediate part and a rear part along the axis of the coaxial connector, at least two of said parts defining between them an interface comprising at least one at least one portion extending obliquely with respect to said axis.
  • the front portion and the rear portion of the insulation are advantageously made of standard dielectric materials.
  • the first and second intermediate parts are advantageously made of dielectric materials having a higher thermal conductivity than the dielectric materials of the front and rear parts.
  • the middle part is advantageously made of glass or a material close to glass, also called glass bead.
  • a coaxial connector having an insulator as above may have satisfactory hermetic properties.
  • the interface between the first intermediate portion and the middle portion of the insulation advantageously defines a conical surface and the interface between the middle portion and the second intermediate portion of the insulation advantageously defines a conical surface, so that the middle part of the insulation has a biconical form, further reducing the risk of breakdown related to the multipactor effect.
  • a passage of generally cylindrical shape is advantageously formed in the insulation to receive the central contact.
  • Such a passage may consist only of a single portion of cylindrical shape or by several cylindrical shaped portions of different diameters.
  • the passage and the central contact are for example such that when the central contact is in place in said passage, the central contact and the insulator are in contact only via cylindrical surfaces.
  • the outer surface of the coaxial connector advantageously comprises, on at least one portion, a coating having a thermal absorptivity / thermal emissivity ratio of less than 1.
  • Such a coating which covers all or part of the outer surface of the coaxial connector allows to promote the dissipation of the heat of the connector in the vacuum.
  • the invention can thus dissipate the heat caused by the high power in the connector, the central contact to the body on the one hand and the body to the outside on the other hand.
  • the coating advantageously comprises a metal layer covered with a layer of fluororesin, in particular PTFE.
  • the metal layer has, for example, low absorptivity while the fluororesin layer has a high emissivity.
  • the body and / or the sleeve and / or a plug of the connector are for example provided on at least a portion of their outer surface, in particular of their outer lateral surface, of said coating.
  • a connector having a two-part insulator with an interface having at least a non-collinear portion with the radial electric field lines in the coaxial connector can prevent the creation of vacuum electron avalanches as well as the accumulation of charges at the interfaces between the parts of the insulation, as explained above.
  • a connector having an insulator a portion of which is configured to exert a holding action on the insulation of the coaxial cable on which the connector is mounted makes it possible, thanks to this holding action, to avoid the creation of a space between the insulation of the coaxial connector and the insulation of the coaxial cable, in particular in case the insulation of the cable would recede under the effect of thermal expansion.
  • Such a connector having one and / or the other of the features discussed above may be configured to withstand power of a few hundred Watts, for example 100 Watts, for frequencies between 1 and 18 GHz, especially between 2 and 18 GHz, at altitude and / or under vacuum conditions.
  • Such a connector is advantageously configured to withstand high altitude breakdown phenomena, especially under vacuum conditions.
  • the dielectric material of said portion of the insulator arranged to exert a holding action on the cable advantageously has a linear thermal expansion coefficient lower than that of the dielectric of the cable.
  • Said part may also for example have a coefficient of thermal linear expansion less than that of at least one other part of the insulator, for example the front and middle parts when the insulation has three distinct parts.
  • the value of the thermal linear expansion coefficient of the rear part of the insulation is less than 135 m / m / K (meter per meter per kelvin) in the case where the dielectric of the cable is PTFE (TEFLON), the part dielectric of the cable as well as the other parts of insulation with thermal linear expansion coefficient values greater than or equal to 135 m / m / K (meter per meter per kelvin).
  • Said part of the connector insulation is advantageously adapted to the coaxial cable on which the connector is intended to be mounted.
  • Said part of the insulator for example the rear part of the insulator, especially when the latter comprises three distinct parts, comprises for example two jaws intended to be applied against the insulation of the coaxial cable and a sleeve surrounding the jaws externally , which can make it possible to ensure the retention of a semi-rigid type cable.
  • said portion of the insulator arranged to exert a holding action on the cable may comprise a threaded portion intended to be applied against the insulation of the coaxial cable, for example when the cable is of flexible type.
  • said part of the insulation is for example monobloc.
  • the invention further relates to an assembly comprising the connector described above and the coaxial cable on which the cable is mounted, the connector insulation having at least one portion configured to exert a holding action on the cable insulation. coaxial.
  • FIG. 1 an example of an X-axis coaxial connector, for example of the TNC type, designated generally by 1.
  • This coaxial connector 1 comprises in the example described a body 2 made in one piece and a central contact 3 mounted in the body 2 with interposition of an insulator 4.
  • a passage 7 of cylindrical shape is formed in the insulator 4 to receive the central contact 3 which is of substantially cylindrical outer shape in the illustrated example.
  • the coaxial connector 1 further comprises in the example described a plug 5 mounted on the front of the body 2 and a sleeve 6 mounted on the rear of the body 2.
  • the plug 5 defines in the example described a front portion of the connector 1 intended to be coupled to a complementary coaxial connector while the sleeve 6 defines a rear portion of the connector 1 intended to be mounted on a coaxial cable 8.
  • this coaxial cable 8 comprises a central contact 9 and an insulator 10 surrounding the central contact 9 and the cable 8 can be received inside the sleeve 6 of the coaxial connector 1.
  • the coaxial connector 1 further comprises in the example described an annular seal 12 disposed between the body 2 and the plug 5.
  • Insulator 4 comprises in the example of the figure 1 three distinct parts 4a, 4b and 4c along the X axis of the connector 1 but the invention is not limited to a specific number of insulating parts 4, as will be seen later.
  • the parts 4a, 4b and 4c of the insulator 4 are made of dielectric materials, in particular of different dielectric materials.
  • the front portion 4a of the insulation is for example made of a standard dielectric material, for example Teflon® thermal conductivity equal to 1 W / m.K.
  • the middle portions 4b and 4c rear are for example made of dielectric materials having thermal conductivity values greater than those of the dielectric material of the front portion 4a.
  • the rear part 4c can also be made of a dielectric material having a thermal conductivity value greater than that of the dielectric material of the middle portion 4b.
  • the interface 13 between the front part 4a and the median part 4b of the insulator, respectively the interface 14 between the middle part 4b and the rear part 4c of the insulator 4, comprises at least one portion 15, respectively 16 , extending obliquely with respect to the X axis of the coaxial connector 1.
  • these portions 15 and 16 define conical surfaces. Such conical surfaces intersect the electric field lines in the coaxial connector 1, the latter extending radially with respect to the X axis of the connector. Of In this way, the electrons are absorbed by the parts of the insulation without being able to be re-emitted, avoiding any accumulation of charges.
  • the portions 15 and 16 are not parallel and deviate as one moves away from the central contact 3 to the body 2 of the connector.
  • the rear part 4c of the insulator 4 comprises three distinct parts, namely a sleeve 160 and two jaws 17.
  • the two jaws 17 are intended to be applied against the insulation 10 of the coaxial cable 8, so as to retain the cable coaxial 8 on the connector 1.
  • the sleeve 160 externally surrounds the jaws 17, now the latter on the insulation 10 of the cable.
  • Such a rear portion 4c is particularly suitable for maintaining a coaxial cable 8 of semi-rigid type.
  • the rear part 4c of the insulation is monobloc and comprises a portion having an internal thread 19 penetrating the insulation 10 of the cable 8 when the connector 1 is mounted on the coaxial cable 8.
  • Such a rear portion 4c is particularly suitable for maintaining on connector 1 a coaxial cable 8 of flexible type.
  • the insulation 10 of such a flexible cable may or may not be prefilted according to the flexibility of the coaxial cable 8.
  • the insulator 4 has only two distinct parts and one of said parts comprises a sleeve 160 and two jaws 17, similarly to what has been described with reference to the figure 2 , or said portion comprises a portion having an internal thread 19, similar to what has been described with reference to the figure 3 .
  • the connector body 2 comprises two parts 2a 'and 2b' and the insulator comprises five distinct parts 4a ', 4b', 4c ', 4d', 4e 'succeeding one another along the axis X of the coaxial connector 1 .
  • the front portion 4a 'of the insulation is for example made of a standard dielectric material which is for example Teflon®, in order to keep the coaxial connector a standard interface for coupling to a complementary coaxial connector.
  • the intermediate parts 4b 'and 4d' are in the example described carried out in dielectric materials having a higher thermal conductivity than the dielectric material of the front portion 4a '.
  • Part 4c ' is made of glass or a material close to glass, also called glass bead. As can be seen on the figure 5 , this median portion 4c 'is surrounded externally by an annular element 11a' and is traversed internally substantially in the middle along the axis X by a cylindrical central contact 1 1b '. The middle part 4c 'is for example directly molded on the annular element 11a' and the central cylindrical contact 11b '.
  • the annular element 11a 'and the cylindrical central contact 11b' are for example made of a metallic material having a thermal expansion close to that of the glass, for example Dilver P®.
  • annular element 11a ', the central contact 11b' and the middle part 4c 'of the insulator are laser brazed on the body part 2b'.
  • the rear part 4 '' of the insulation can be made of a standard dielectric material which is for example Teflon ® , in order to keep the coaxial connector a standard interface for receiving the coaxial cable.
  • the part 4c 'of the insulation defines for example with the adjacent parts 4b' and 4d 'of the insulation interfaces which have opposite slopes, so that the part 4c' is biconical, which can allow to confer hermetic properties to the connector obtained while limiting the risks associated with the multipactor effect.
  • the body 2, the sleeve 6 and / or the cap 5 may comprise, on at least a portion of their external lateral surface, in particular over their entire external lateral surface, a coating 20 having a thermal absorptivity / thermal emissivity ratio of less than 1 , which may make it possible to improve the outward heat dissipation by the body 2, the sleeve 6 and / or the cap 5.
  • This coating 20 comprises, for example, a layer 21 made of shiny metal, for example made of silver, covered with a layer 22 of fluororesin, for example PTFE.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP10163624.9A 2009-05-29 2010-05-21 Connecteur très haute puissance Active EP2256876B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0953562A FR2946185B1 (fr) 2009-05-29 2009-05-29 Connecteur tres haute puissance

Publications (2)

Publication Number Publication Date
EP2256876A1 EP2256876A1 (fr) 2010-12-01
EP2256876B1 true EP2256876B1 (fr) 2015-04-08

Family

ID=41382166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10163624.9A Active EP2256876B1 (fr) 2009-05-29 2010-05-21 Connecteur très haute puissance

Country Status (4)

Country Link
US (1) US8414327B2 (zh)
EP (1) EP2256876B1 (zh)
CN (1) CN101901983B (zh)
FR (1) FR2946185B1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023175111A1 (fr) 2022-03-17 2023-09-21 Radiall Composant monobloc pour connecteur électrique et/ou optique comprenant un corps et une bague formant écrou d'étanchéité et de fixation par blocage en rotation à un connecteur

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JP5889478B2 (ja) * 2012-04-05 2016-03-22 モレックス エルエルシー 高電力電気コネクタ
CN102723635B (zh) * 2012-04-09 2014-10-08 常熟市虞华真空设备科技有限公司 一种真空高压电极法兰
CN103545935A (zh) * 2012-07-10 2014-01-29 苏州张扬能源科技有限公司 一种储能法兰
CN102832497A (zh) * 2012-09-13 2012-12-19 电子科技大学 一种具有真空密封功能的耐高电压连接器
CN103066403B (zh) * 2012-12-26 2016-02-24 中航光电科技股份有限公司 一种功率连接器及其接触件
US8926360B2 (en) * 2013-01-17 2015-01-06 Cooper Technologies Company Active cooling of electrical connectors
CN105044768B (zh) * 2014-04-17 2018-03-09 英洛瓦(天津)物探装备有限责任公司 用于将线缆连接至地震装置的方法
CN105470702B (zh) * 2015-07-31 2018-01-16 中航光电科技股份有限公司 绝缘体及使用该绝缘体的电连接器
CN105977657B (zh) * 2016-06-30 2018-10-30 瑞安市超声电器有限公司 散热型高压接插件
US10424424B2 (en) * 2017-06-16 2019-09-24 The Boeing Company Coaxial radio frequency connectors for high-power handling
US10608352B2 (en) * 2017-12-21 2020-03-31 Molex, Llc Connector and connector assembly
CN110600952A (zh) * 2018-06-12 2019-12-20 上海雷迪埃电子有限公司 大功率容差盲插同轴连接器
JP7280234B2 (ja) * 2020-11-25 2023-05-23 矢崎総業株式会社 コネクタ
TWM613369U (zh) * 2021-04-07 2021-06-11 帛江科技股份有限公司 同軸連接器

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023175111A1 (fr) 2022-03-17 2023-09-21 Radiall Composant monobloc pour connecteur électrique et/ou optique comprenant un corps et une bague formant écrou d'étanchéité et de fixation par blocage en rotation à un connecteur
FR3133710A1 (fr) 2022-03-17 2023-09-22 Radiall Composant monobloc pour connecteur électrique et/ou optique comprenant un corps et une bague formant écrou d’étanchéité et de fixation par blocage en rotation à un connecteur.

Also Published As

Publication number Publication date
US8414327B2 (en) 2013-04-09
CN101901983A (zh) 2010-12-01
US20100304607A1 (en) 2010-12-02
FR2946185A1 (fr) 2010-12-03
FR2946185B1 (fr) 2012-10-19
CN101901983B (zh) 2015-02-04
EP2256876A1 (fr) 2010-12-01

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