EP2256876A1 - Very-high-power connector - Google Patents

Very-high-power connector Download PDF

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Publication number
EP2256876A1
EP2256876A1 EP10163624A EP10163624A EP2256876A1 EP 2256876 A1 EP2256876 A1 EP 2256876A1 EP 10163624 A EP10163624 A EP 10163624A EP 10163624 A EP10163624 A EP 10163624A EP 2256876 A1 EP2256876 A1 EP 2256876A1
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EP
European Patent Office
Prior art keywords
connector
insulator
insulation
interface
coaxial
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
EP10163624A
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German (de)
French (fr)
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EP2256876B1 (en
Inventor
Edith Mana
Emilie Fond
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Radiall SA
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Radiall SA
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Publication of EP2256876A1 publication Critical patent/EP2256876A1/en
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Publication of EP2256876B1 publication Critical patent/EP2256876B1/en
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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
    • H01R13/533—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 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 advantageously comprises a front part, a rear part and a median part between the front part and the rear part of the insulator along the axis of the coaxial connector.
  • the interface between the front part and the middle part of the insulator advantageously has 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 insulator. advantageously has 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.
  • the coaxial connector advantageously comprises a body provided on at least a portion of its outer surface of said coating.
  • the coaxial connector advantageously comprises a sleeve provided on at least a portion of its outer surface of said coating.
  • the coaxial connector advantageously comprises a cap provided on at least a portion of its outer surface of said coating.
  • the coating may extend over all or part of the periphery of the coaxial connector.
  • 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 TeflonĀ® 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 TeflonĀ®, 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 PĀ®.
  • 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 Ā® , 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.

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The connector (1) has a central contact (3) mounted in a body (2) with interposition of insulation (4). The insulation has a front part (4a), a middle part (4b) and a rear part (4c), separated among one another by interfaces (13, 14) presenting portions (15, 16) that extend obliquely relative to an axis (X) of the connector. The parts are made of different dielectric materials e.g. Teflon(RTM: PTFE), where the connector withstands breakdown phenomena at altitudes under vacuum conditions. The body has a coating on a portion of outside surface.

Description

La prƩsente invention a pour objet un connecteur coaxial.The present invention relates to a coaxial connector.

L'invention s'applique plus particuliĆØrement Ć  un connecteur coaxial pour des applications dans le domaine spatial, un tel connecteur Ć©tant avantageusement capable de rĆ©sister Ć  de fortes puissances en altitude, et plus particuliĆØrement dans des conditions de vide. Par Ā« en altitude Ā», il faut comprendre Ć  une altitude supĆ©rieure Ć  30000 pieds. Au sens de l'invention, des conditions de vide sont au moins celles du vide primaire, soit 105 Pascal jusqu'aux conditions de vide spatial, soit 1,33 10-8 Pascal. Par "fortes puissances", on dĆ©signe des puissances de l'ordre de 400 W pour des frĆ©quences de 1 ou 2 GHz, de 300 W Ć  des frĆ©quences de 7 GHz et, de quelques centaines de Watts Ć  18 GHz. La puissance Ć  laquelle le connecteur est soumis est par exemple supĆ©rieure Ć  100W.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. By "at altitude", it is necessary to understand at an altitude higher than 30000 feet. Within the meaning of the invention, 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.

Plus la frĆ©quence du signal est grande, plus la chaleur Ć  dissiper est importante. Il est connu pour diminuer la production de chaleur d'augmenter le diamĆØtre du contact central. NĆ©anmoins, cette augmentation du diamĆØtre du contact central conduit Ć  une augmentation du diamĆØtre du connecteur, ce qui peut poser des problĆØmes en termes d'encombrement et diminuer la frĆ©quence de coupure du connecteur.The higher the signal frequency, the greater the heat to dissipate. It is known to decrease heat production to increase the diameter of the central contact. Nevertheless, this increase in the diameter of the central contact leads to an increase in the diameter of the connector, which can cause problems in terms of space and reduce the cutoff frequency of the connector.

Il est par ailleurs connu par la demande EP 1 427 069 d'utiliser un lien mƩtallique reliant le corps d'un connecteur coaxial Ơ une partie mƩtallique permettant un transfert de chaleur du corps vers la partie mƩtallique. Une telle solution ne permet pas d'amƩliorer le transfert de chaleur du contact central vers le corps du connecteur coaxial.It is also known by the demand EP 1 427 069 to use a metal link connecting the body of a coaxial connector to a metal part allowing a transfer of heat from the body to the metal part. Such a solution does not make it possible to improve the heat transfer from the central contact to the body of the coaxial connector.

Il est encore connu, par exemple par le brevet US 7 128 604 , de pourvoir le corps d'un connecteur coaxial d'ailettes permettant de dissiper la chaleur dans l'air. Une telle solution n'est pas entiĆØrement satisfaisante pour des applications dans des conditions de vide. Elle ne permet pas non plus d'amĆ©liorer le transfert de chaleur du contact central vers le corps du connecteur coaxial.It is still known, for example by the patent US 7,128,604 , to provide the body with a coaxial connector fins to dissipate heat in the air. Such a solution is not entirely satisfactory for applications under vacuum conditions. It also does not improve the heat transfer from the central contact to the body of the coaxial connector.

En outre, dans de telles conditions de vide, le risque que le connecteur soit soumis Ć  l'effet multipactor, qui correspond Ć  un phĆ©nomĆØne de dĆ©charge se produisant dans des composants micro-onde ou radiofrĆ©quences, n'est pas nĆ©gligeable.In addition, under such vacuum conditions, the risk that the connector is subjected to the multipactor effect, which corresponds to a discharge phenomenon occurring in microwave or radio frequency components, is not negligible.

Il est connu, par exemple par le brevet US 4 698 028 , d'utiliser un isolant en deux parties dĆ©finissant entre elles une interface s'Ć©tendant perpendiculairement ou parallĆØlement Ć  l'axe du connecteur coaxial.It is known, for example by the patent US 4,698,028 , to use a two-part insulator defining between them an interface extending perpendicularly or parallel to the axis of the coaxial connector.

On connaĆ®t par la demande DE 24 51 853 un connecteur coaxial comportant un isolant en deux parties interposĆ© entre le contact central et le contact de masse du connecteur. Les deux parties de l'isolant sont sĆ©parĆ©es par une interface en partie conique, permettant un centrage satisfaisant du contact central. Du fait notamment de l'emploi pour rĆ©aliser les parties de l'isolant de polyĆ©thylĆØne et de PTFE, un tel connecteur n'est pas apte Ć  dissiper de fortes puissances en altitude, plus particuliĆØrement dans des conditions de vide.We know by the request DE 24 51 853 a coaxial connector having a two-part insulator interposed between the central contact and the ground contact of the connector. The two parts of the insulation are separated by a partly conical interface, allowing a satisfactory centering of the central contact. Due in particular to the use of the parts of the polyethylene and PTFE insulation, such a connector is not able to dissipate high powers at altitude, more particularly under vacuum conditions.

Il existe un besoin pour bĆ©nĆ©ficier d'un connecteur utilisable dans des conditions de vide, ce connecteur Ć©tant capable de dissiper la chaleur pour supporter de fortes puissances et d'Ć©viter tous phĆ©nomĆØnes de claquage, notamment ceux dus Ć  l'effet multipactor.There is a need to benefit from a connector that can be used in vacuum conditions, this connector being capable of dissipating heat to withstand high power and to avoid any breakdown phenomena, in particular those due to the multipactor effect.

L'invention a pour objet de rĆ©pondre Ć  ce besoin et, elle y parvient, selon l'un de ses aspects grĆ¢ce Ć  un connecteur coaxial comprenant :

  • un corps, et
  • un contact central montĆ© dans le corps avec interposition d'un isolant, caractĆ©risĆ© par le fait que l'isolant comporte au moins deux parties distinctes :
    1. a) sƩparƩes par une interface prƩsentant au moins une portion non colinƩaire aux lignes de champs Ʃlectriques dans le connecteur, notamment s'Ʃtendant obliquement par rapport Ơ l'axe du connecteur et/ou
    2. b) rƩalisƩes en des matƩriaux diƩlectriques diffƩrents.
The object of the invention is to meet this need and, in one of its aspects, it achieves this through a coaxial connector comprising:
  • a body, and
  • a central contact mounted in the body with interposition of an insulator, characterized in that the insulator comprises at least two distinct parts:
    1. a) separated by an interface having at least one non-collinear portion to the electric field lines in the connector, in particular extending obliquely with respect to the axis of the connector and / or
    2. b) made of different dielectric materials.

Le connecteur est avantageusement configurƩ pour rƩsister Ơ des puissances de quelques centaines de Watts, par exemple 100 Watts pour des frƩquences comprises entre 1 et 18 GHz notamment entre 2 et 18 GHz en altitude et/ou dans des conditions de vide.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.

Le connecteur est avantageusement capable de rĆ©sister Ć  des phĆ©nomĆØnes de claquage.The connector is advantageously capable of withstanding breakdown phenomena.

Les phĆ©nomĆØnes de claquage correspondent aux avalanches d'Ć©lectrons gĆ©nĆ©rĆ©es sur les mĆ©taux dans des conditions de pression trĆØs faible par des champs Ć©lectromagnĆ©tiques trĆØs intenses se produisent Ć  un niveau Ć©levĆ© de puissance, ces avalanches d'Ć©lectrons sur les mĆ©taux gĆ©nĆØrant une dĆ©charge Ć©lectrique qui peut ĆŖtre destructive.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.

Lorsqu'un connecteur n'est pas soumis aux phĆ©nomĆØnes de claquage, il ne se produit pas d'avalanches d'Ć©lectrons au travers d'un espace vide du connecteur sous l'effet d'un champ Ć©lectrique alternatif.When a connector is not subjected to breakdown phenomena, electron avalanches do not occur through an empty space of the connector under the effect of an alternating electric field.

L'invention permet la dissipation de chaleur du contact central vers le corps du connecteur coaxial par l'intermƩdiaire de l'isolant.The invention allows the heat dissipation of the central contact to the body of the coaxial connector through the insulator.

Les deux parties distinctes de l'isolant sont avantageusement sƩparƩes par une interface prƩsentant au moins une portion s'Ʃtendant obliquement par rapport Ơ l'axe du connecteur. Une telle portion non colinƩaire avec les lignes de champs Ʃlectriques qui sont radiales dans le connecteur coaxial peut permettre d'Ʃviter la crƩation d'avalanches d'Ʃlectrons sous vide ainsi que l'accumulation de charges aux interfaces entre les parties de l'isolant, contrairement aux connecteurs coaxiaux connus dans lesquels les interfaces entre deux parties de l'isolant prƩsentent une forme d'escalier.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.

Le corps du connecteur coaxial peut ĆŖtre rĆ©alisĆ© d'une seule piĆØce ou en plusieurs piĆØces distinctes. Les au moins deux parties distinctes de l'isolant sont avantageusement rĆ©alisĆ©es en des matĆ©riaux diĆ©lectriques diffĆ©rents.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.

L'une des parties de l'isolant est avantageusement rƩalisƩe en un matƩriau diƩlectrique prƩsentant une valeur de conductivitƩ thermique diffƩrente de celle du matƩriau diƩlectrique de l'autre partie de l'isolant.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.

Au moins une des parties de l'isolant est avantageusement rƩalisƩe en un matƩriau diƩlectrique prƩsentant une valeur de conductivitƩ thermique supƩrieure Ơ 1 W/m.K.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.

L'emploi de plusieurs matƩriaux diƩlectriques pour rƩaliser l'isolant permet d'amƩliorer la dissipation de chaleur du connecteur coaxial, tout en optimisant la taille du connecteur et en conservant des performances en termes d'hyperfrƩquence satisfaisantes.The use of several dielectric materials to produce the insulation improves the heat dissipation of the coaxial connector, while optimizing the size of the connector and maintaining satisfactory performance in terms of microwave.

L'isolant comporte avantageusement une partie avant, une partie arriĆØre et une partie mĆ©diane entre la partie avant et la partie arriĆØre de l'isolant selon l'axe du connecteur coaxial.The insulation advantageously comprises a front part, a rear part and a median part between the front part and the rear part of the insulator along the axis of the coaxial connector.

L'interface entre la partie avant et la partie mĆ©diane de l'isolant prĆ©sente avantageusement au moins une portion s'Ć©tendant obliquement par rapport Ć  l'axe du connecteur coaxial et l'interface entre la partie mĆ©diane et la partie arriĆØre de l'isolant prĆ©sente avantageusement au moins une portion s'Ć©tendant obliquement par rapport Ć  l'axe du connecteur coaxial.The interface between the front part and the middle part of the insulator advantageously has 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 insulator. advantageously has at least one portion extending obliquely with respect to the axis of the coaxial connector.

Ladite portion de l'interface entre la partie avant et la partie mĆ©diane de l'isolant et ladite portion de l'interface entre la partie mĆ©diane et la partie arriĆØre de l'isolant peuvent ou non ĆŖtre parallĆØles. Ces portions peuvent ĆŖtre dirigĆ©es selon des directions qui s'Ć©cartent l'une de l'autre lorsque l'on s'Ć©loigne du contact central vers le corps du connecteur. En variante, lesdites portions sont dirigĆ©es selon des directions qui se rapprochent l'une de l'autre lorsque l'on s'Ć©loigne du contact central vers le corps du connecteur.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.

Dans une variante, l'interface entre la partie avant et la partie mĆ©diane de l'isolant comporte au moins une portion s'Ć©tendant obliquement par rapport Ć  l'axe du connecteur coaxial et l'interface entre la partie mĆ©diane et la partie arriĆØre de l'isolant est dĆ©pourvue d'une telle portion s'Ć©tendant obliquement, ou inversement.In a variant, 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.

Les parties avant, mĆ©diane et arriĆØre de l'isolant sont avantageusement rĆ©alisĆ©es en des matĆ©riaux diĆ©lectriques diffĆ©rents.The front, middle and rear parts of the insulation are advantageously made of different dielectric materials.

La partie mĆ©diane de l'isolant est avantageusement rĆ©alisĆ©e en un matĆ©riau diĆ©lectrique prĆ©sentant une valeur de conductivitĆ© thermique diffĆ©rente de celle du matĆ©riau diĆ©lectrique de la partie avant et diffĆ©rente de celle du matĆ©riau diĆ©lectrique de la partie arriĆØre. La partie mĆ©diane de l'isolant est par exemple rĆ©alisĆ©e en un matĆ©riau diĆ©lectrique prĆ©sentant une valeur de conductivitĆ© thermique supĆ©rieure Ć  celle du matĆ©riau diĆ©lectrique de la partie avant et infĆ©rieure Ć  celle du matĆ©riau diĆ©lectrique de la partie arriĆØre, afin de favoriser encore la dissipation de chaleur du connecteur coaxial. Ainsi, les parties mĆ©diane et arriĆØre de l'isolant peuvent toutes deux ĆŖtre rĆ©alisĆ©es avec des matĆ©riaux diĆ©lectriques prĆ©sentant une conductivitĆ© thermique supĆ©rieure Ć  1 W/m.K. En variante, seule la partie arriĆØre de l'isolant prĆ©sente une telle valeur de conductivitĆ© thermique. En variante, seule la partie mĆ©diane de l'isolant prĆ©sente une telle valeur de conductivitĆ© thermique.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. Thus, 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. As a variant, only the rear part of the insulator has such a value of thermal conductivity. Alternatively, only the middle part of the insulator has such a value of thermal conductivity.

Les parties mĆ©dianes et arriĆØre sont avantageusement rĆ©alisĆ©es dans des matĆ©riaux prĆ©sentant des valeurs de coefficients d'expansion linĆ©aires thermiques infĆ©rieures Ć  celles des diĆ©lectriques standards utilisĆ©s habituellement, tels que le PTFE.The 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.

La partie avant de l'isolant est par exemple rƩalisƩe en un matƩriau diƩlectrique standard permettant de conserver au connecteur coaxial une interface standard pour l'accouplement Ơ un connecteur complƩmentaire.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.

L'une des parties de l'isolant, notamment la partie arriĆØre de l'isolant, par exemple dans le cas oĆ¹ l'isolant comporte deux ou trois parties distinctes, est avantageusement agencĆ©e pour exercer une action de maintien sur un cĆ¢ble coaxial, notamment sur l'isolant de ce cĆ¢ble coaxial, sur lequel le connecteur est montĆ©, ce qui permet par exemple d'Ć©viter la crĆ©ation d'un espace entre l'isolant du connecteur coaxial et l'isolant du cĆ¢ble coaxial, notamment au cas oĆ¹ l'isolant du cĆ¢ble reculerait sous l'effet de dilatations thermiques et de rĆ©duire encore les risques de claquage liĆ©s Ć  l'effet multipactor.One of the parts of the insulator, in particular the rear part of the insulator, for example in the case where the insulator comprises two or three distinct parts, 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.

Le matĆ©riau diĆ©lectrique de ladite partie de l'isolant agencĆ©e pour exercer une action de maintien sur le cĆ¢ble, notamment la partie arriĆØre de l'isolant, par exemple lorsque ce dernier comporte deux ou trois parties distinctes, prĆ©sente avantageusement un coefficient d'expansion linĆ©aire thermique infĆ©rieur Ć  celui du diĆ©lectrique du cĆ¢ble. Ladite partie peut aussi par exemple prĆ©senter un coefficient d'expansion linĆ©aire thermique infĆ©rieur Ć  celui d'au moins une autre partie de l'isolant, par exemple les parties avant et mĆ©diane lorsque l'isolant comporte trois parties distinctes. Ladite partie de l'isolant du connecteur est avantageusement adaptĆ©e au cĆ¢ble coaxial sur lequel le connecteur est destinĆ© Ć  ĆŖtre montĆ©. Le coefficient d'expansion linĆ©aire thermique de ladite partie de l'isolant est par exemple infĆ©rieur Ć  135 m/m/K (mĆØtre par mĆØtre par kelvin) dans le cas oĆ¹ le diĆ©lectrique du cĆ¢ble est du PTFE (TEFLON). La partie diĆ©lectrique du cĆ¢ble et les autres parties de l'isolant prĆ©sentent alors par exemple des valeurs de coefficient d'expansion linĆ©aire thermique supĆ©rieures ou Ć©gales Ć  135 m/m/K (mĆØtre par mĆØtre par kelvin). Ladite partie de l'isolant, par exemple la partie arriĆØre de l'isolant, notamment lorsque l'isolant comporte deux ou trois parties distinctes, comporte par exemple deux mĆ¢choires destinĆ©es Ć  s'appliquer contre l'isolant du cĆ¢ble coaxial et un manchon entourant extĆ©rieurement les mĆ¢choires, ce qui peut permettre d'assurer la rĆ©tention d'un cĆ¢ble de type semi rigide.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.

En variante, ladite partie de l'isolant agencĆ©e pour exercer une action de maintien sur le cĆ¢ble peut comporter une portion taraudĆ©e destinĆ©e Ć  s'appliquer contre l'isolant du cĆ¢ble coaxial, par exemple lorsque le cĆ¢ble est de type souple. Dans ce cas, ladite partie de l'isolant est par exemple monobloc.Alternatively, 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. In this case, said part of the insulation is for example monobloc.

La portion d'interface s'Ʃtendant obliquement par rapport Ơ l'axe du connecteur coaxial dƩfinit avantageusement une surface conique. Une telle surface conique coupe avantageusement les lignes de champs Ʃlectriques dans le connecteur coaxial.The interface portion extending obliquely with respect to the axis of the coaxial connector advantageously defines a conical surface. Such a conical surface advantageously intersects the electric field lines in the coaxial connector.

Dans une variante, l'isolant comporte avantageusement une partie avant, une premiĆØre partie intermĆ©diaire, une partie mĆ©diane, une deuxiĆØme partie intermĆ©diaire et une partie arriĆØre selon l'axe du connecteur coaxial, deux au moins desdites parties dĆ©finissant entre elles une interface comportant au moins une portion s'Ć©tendant obliquement par rapport audit axe.In a variant, 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.

La partie avant et la partie arriĆØre de l'isolant sont avantageusement rĆ©alisĆ©es en des matĆ©riaux diĆ©lectriques standards.The front portion and the rear portion of the insulation are advantageously made of standard dielectric materials.

Les premiĆØre et deuxiĆØme parties intermĆ©diaires sont avantageusement rĆ©alisĆ©es en des matĆ©riaux diĆ©lectriques prĆ©sentant une conductivitĆ© thermique supĆ©rieure Ć  celle des matĆ©riaux diĆ©lectriques des parties avant et arriĆØre.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.

La partie mƩdiane est avantageusement rƩalisƩe en verre ou en un matƩriau proche du verre, encore appelƩ perle de verre. Un connecteur coaxial prƩsentant un isolant tel que ci-dessus peut prƩsenter des propriƩtƩs d'hermƩticitƩ satisfaisantes.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.

L'interface entre la premiĆØre partie intermĆ©diaire et la partie mĆ©diane de l'isolant dĆ©finit avantageusement une surface conique et l'interface entre la partie mĆ©diane et la deuxiĆØme partie intermĆ©diaire de l'isolant dĆ©finit avantageusement une surface conique, de faƧon Ć  ce que la partie mĆ©diane de l'isolant ait une forme biconique, permettant de rĆ©duire encore les risques de claquage liĆ©s Ć  l'effet multipactor.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.

Un passage de forme globalement cylindrique est avantageusement mĆ©nagĆ© dans l'isolant pour recevoir le contact central. Un tel passage peut n'ĆŖtre constituĆ© que par une seule portion de forme cylindrique ou par plusieurs portions de forme cylindriques de diamĆØtres diffĆ©rents. Le passage et le contact central sont par exemple tels que lorsque le contact central est en place dans ledit passage, le contact central et l'isolant ne sont en contact que par l'intermĆ©diaire de surfaces cylindriques.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.

La surface extĆ©rieure du connecteur coaxial comporte avantageusement sur au moins une portion un revĆŖtement prĆ©sentant un rapport absorptivitĆ© thermique sur Ć©missivitĆ© thermique infĆ©rieur Ć  1.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.

Un tel revĆŖtement, qui recouvre entiĆØrement ou en partie la surface extĆ©rieure du connecteur coaxial permet de favoriser la dissipation de la chaleur du connecteur dans le vide.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.

L'invention peut ainsi permettre de dissiper la chaleur causƩe par les fortes puissances dans le connecteur, du contact central vers le corps d'une part et, du corps vers l'extƩrieur d'autre part.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.

Le revĆŖtement comporte avantageusement une couche mĆ©tallique recouverte d'une couche en rĆ©sine fluorĆ©e, notamment en PTFE. La couche mĆ©tallique prĆ©sente par exemple une absorptivitĆ© faible tandis que la couche en rĆ©sine fluorĆ©e prĆ©sente une Ć©missivitĆ© Ć©levĆ©e.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.

Le corps et/ou le manchon et/ou un bouchon du connecteur sont par exemple pourvus sur au moins une portion de leur surface extĆ©rieure, notamment de leur surface latĆ©rale extĆ©rieure, dudit revĆŖtement.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.

L'invention a encore pour objet, selon un autre de ses aspects, un connecteur coaxial comprenant :

  • un corps, et
  • un contact central montĆ© dans le corps avec interposition d'un isolant, caractĆ©risĆ© par le fait que la surface extĆ©rieure du connecteur comporte sur au moins une portion un revĆŖtement prĆ©sentant un rapport absorptivitĆ© thermique sur Ć©missivitĆ© thermique infĆ©rieur Ć  1.
The invention further relates, in another of its aspects, to a coaxial connector comprising:
  • a body, and
  • a central contact mounted in the body with interposition of an insulator, characterized in that the outer surface of the connector comprises on at least a portion a coating having a thermal absorptivity to thermal emissivity ratio of less than 1.

Le connecteur coaxial comporte avantageusement un corps pourvu sur au moins une portion de sa surface extĆ©rieure dudit revĆŖtement.The coaxial connector advantageously comprises a body provided on at least a portion of its outer surface of said coating.

Le connecteur coaxial comporte avantageusement un manchon pourvu sur au moins une portion de sa surface extĆ©rieure dudit revĆŖtement.The coaxial connector advantageously comprises a sleeve provided on at least a portion of its outer surface of said coating.

Le connecteur coaxial comporte avantageusement un bouchon pourvu sur au moins une portion de sa surface extĆ©rieure dudit revĆŖtement.The coaxial connector advantageously comprises a cap provided on at least a portion of its outer surface of said coating.

Le revĆŖtement peut s'Ć©tendre sur tout ou partie du pourtour du connecteur coaxial.The coating may extend over all or part of the periphery of the coaxial connector.

L'invention a encore pour objet, selon un autre de ses aspects, un connecteur coaxial comprenant :

  • un corps, et
  • un contact central montĆ© dans le corps avec interposition d'un isolant, l'isolant comportant au moins deux parties distinctes sĆ©parĆ©es par une interface prĆ©sentant au moins une portion non colinĆ©aire aux lignes de champs Ć©lectriques dans le connecteur, s'Ć©tendant notamment obliquement par rapport Ć  l'axe du connecteur, et/ou, l'une des parties de l'isolant, notamment la partie arriĆØre de l'isolant, notamment d'un isolant comportant trois parties distinctes, Ć©tant configurĆ©e pour exercer une action de maintien sur l'isolant d'un cĆ¢ble coaxial sur lequel le connecteur est montĆ©.
The invention further relates, in another of its aspects, to a coaxial connector comprising:
  • a body, and
  • a central contact mounted in the body with the interposition of an insulator, the insulation comprising at least two distinct parts separated by an interface having at least one non-collinear portion to the electric field lines in the connector, extending in particular obliquely with respect to to the connector axis, and / or, one of the parts of the insulator, in particular the rear part of the insulator, in particular an insulator comprising three distinct parts, being configured to exert a holding action on the insulation of a coaxial cable on which the connector is mounted.

Un connecteur prƩsentant un isolant en deux parties avec une interface ayant au moins une portion non colinƩaire avec les lignes de champs Ʃlectriques radiales dans le connecteur coaxial peut permettre d'Ʃviter la crƩation d'avalanches d'Ʃlectrons sous vide ainsi que l'accumulation de charges aux interfaces entre les parties de l'isolant, comme expliquƩ ci-dessus.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.

Un connecteur prĆ©sentant un isolant dont une partie est configurĆ©e pour exercer une action de maintien sur l'isolant du cĆ¢ble coaxial sur lequel le connecteur est montĆ© permet, grĆ¢ce Ć  cette action de maintien, d'Ć©viter la crĆ©ation d'un espace entre l'isolant du connecteur coaxial et l'isolant du cĆ¢ble coaxial, notamment au cas oĆ¹ l'isolant du cĆ¢ble reculerait sous l'effet de dilatations thermiques.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.

Avec un connecteur prĆ©sentant les deux caractĆ©ristiques qui viennent d'ĆŖtre discutĆ©es, les risques de claquage liĆ©s Ć  l'effet multipactor sont rĆ©duits de faƧon significative.With a connector having the two characteristics that have just been discussed, the breakdown risks related to the multipactor effect are significantly reduced.

Un tel connecteur prĆ©sentant l'une et/ou l'autre des caractĆ©ristiques discutĆ©es ci-dessus peut ĆŖtre configurĆ© pour rĆ©sister Ć  des puissance de quelques centaines de Watts, par exemple 100 Watts, pour des frĆ©quences comprises entre 1 et 18 GHz, notamment entre 2 et 18 GHz, en altitude et/ou dans des conditions de vide. Un tel connecteur est avantageusement configurĆ© pour rĆ©sister Ć  des phĆ©nomĆØnes de claquage en altitude, notamment dans des conditions de vide.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.

Le matĆ©riau diĆ©lectrique de ladite partie de l'isolant agencĆ©e pour exercer une action de maintien sur le cĆ¢ble, notamment la partie arriĆØre de l'isolant, prĆ©sente avantageusement un coefficient d'expansion linĆ©aire thermique infĆ©rieur Ć  celui du diĆ©lectrique du cĆ¢ble. Ladite partie peut aussi par exemple prĆ©senter un coefficient d'expansion linĆ©aire thermique infĆ©rieur Ć  celui d'au moins une autre partie de l'isolant, par exemple les parties avant et mĆ©diane lorsque l'isolant comporte trois parties distinctes. La valeur du coefficient d'expansion linĆ©aire thermique de la partie arriĆØre de l'isolant est infĆ©rieur Ć  135 m/m/K (mĆØtre par mĆØtre par kelvin) dans le cas oĆ¹ le diĆ©lectrique du cĆ¢ble est du PTFE (TEFLON), la partie diĆ©lectrique du cĆ¢ble ainsi que les autres parties de l'isolant prĆ©sentant des valeurs de coefficient d'expansion linĆ©aire thermique supĆ©rieures ou Ć©gales Ć  135 m/m/K (mĆØtre par mĆØtre par kelvin).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, 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).

Ladite partie de l'isolant du connecteur est avantageusement adaptĆ©e au cĆ¢ble coaxial sur lequel le connecteur est destinĆ© Ć  ĆŖtre montĆ©.Said part of the connector insulation is advantageously adapted to the coaxial cable on which the connector is intended to be mounted.

Ladite partie de l'isolant, par exemple la partie arriĆØre de l'isolant, notamment lorsque ce dernier comporte trois parties distinctes, comporte par exemple deux mĆ¢choires destinĆ©es Ć  s'appliquer contre l'isolant du cĆ¢ble coaxial et un manchon entourant extĆ©rieurement les mĆ¢choires, ce qui peut permettre d'assurer la rĆ©tention d'un cĆ¢ble de type semi rigide.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.

En variante, ladite partie de l'isolant agencĆ©e pour exercer une action de maintien sur le cĆ¢ble peut comporter une portion taraudĆ©e destinĆ©e Ć  s'appliquer contre l'isolant du cĆ¢ble coaxial, par exemple lorsque le cĆ¢ble est de type souple. Dans ce cas, ladite partie de l'isolant est par exemple monobloc.Alternatively, 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. In this case, said part of the insulation is for example monobloc.

L'invention a encore pour objet un ensemble comportant le connecteur dĆ©crit ci-dessus et le cĆ¢ble coaxial sur lequel le cĆ¢ble est montĆ©, l'isolant du connecteur comportant au moins une partie configurĆ©e pour exercer une action de maintien sur l'isolant du cĆ¢ble coaxial.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.

D'autres avantages et propriƩtƩs de l'invention apparaƮtront Ơ la lecture de la description qui suit d'exemples de rƩalisation non limitatifs en se rƩfƩrant aux dessins annexƩs sur lesquels :

  • la figure 1 est une vue en coupe d'un connecteur coaxial selon un exemple de mise en oeuvre de l'invention,
  • la figure 2 reprĆ©sente un dĆ©tail de la figure 1,
  • la figure 3 reprĆ©sente une variante de partie arriĆØre de l'isolant du connecteur reprĆ©sentĆ©e Ć  la figure 2,
  • la figure 4 reprĆ©sente un exemple de revĆŖtement portĆ© par la surface latĆ©rale extĆ©rieure du corps du connecteur et,
  • la figure 5 est une vue analogue Ć  la figure 1 d'un corps et d'un isolant d'un connecteur coaxial selon un autre exemple de mise en oeuvre de l'invention.
Other advantages and properties of the invention will appear on reading the following description of nonlimiting exemplary embodiments with reference to the appended drawings in which:
  • the figure 1 is a sectional view of a coaxial connector according to an exemplary implementation of the invention,
  • the figure 2 represents a detail of the figure 1 ,
  • the figure 3 represents a variant of the rear part of the insulation of the connector shown in FIG. figure 2 ,
  • the figure 4 represents an example of a coating carried by the outer lateral surface of the connector body and,
  • the figure 5 is a view similar to the figure 1 a body and an insulator of a coaxial connector according to another embodiment of the invention.

On a reprĆ©sentĆ© Ć  la figure 1 un exemple de connecteur coaxial d'axe X, par exemple de type TNC, dĆ©signĆ© globalement par 1. Ce connecteur coaxial 1 comporte dans l'exemple dĆ©crit un corps 2 rĆ©alisĆ© d'une seule piĆØce et un contact central 3 montĆ© dans le corps 2 avec interposition d'un isolant 4. Un passage 7 de forme cylindrique est mĆ©nagĆ© dans l'isolant 4 pour recevoir le contact central 3 qui est de forme extĆ©rieure sensiblement cylindrique dans l'exemple illustrĆ©.We have shown figure 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.

Le connecteur coaxial 1 comporte encore dans l'exemple dĆ©crit un bouchon 5 montĆ© sur l'avant du corps 2 et un manchon 6 montĆ© sur l'arriĆØre du corps 2. Le bouchon 5 dĆ©finit dans l'exemple dĆ©crit une partie avant du connecteur 1 destinĆ©e Ć  ĆŖtre accouplĆ©e Ć  un connecteur coaxial complĆ©mentaire tandis que le manchon 6 dĆ©finit une partie arriĆØre du connecteur 1 destinĆ©e Ć  ĆŖtre montĆ©e sur un cĆ¢ble coaxial 8.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.

Comme on peut le voir sur la figure 1, ce cĆ¢ble coaxial 8 comporte un contact central 9 et un isolant 10 entourant le contact central 9 et le cĆ¢ble 8 peut ĆŖtre reƧu Ć  l'intĆ©rieur du manchon 6 du connecteur coaxial 1.As can be seen on the figure 1 , 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.

Le connecteur coaxial 1 comporte encore dans l'exemple dƩcrit un joint annulaire 12 disposƩ entre le corps 2 et le bouchon 5.The coaxial connector 1 further comprises in the example described an annular seal 12 disposed between the body 2 and the plug 5.

L'isolant 4 comporte dans l'exemple de la figure 1 trois parties distinctes 4a, 4b et 4c selon l'axe X du connecteur 1 mais l'invention n'est pas limitƩe Ơ un nombre prƩcis de parties d'isolant 4, comme on le verra par la suite.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.

Les parties 4a, 4b et 4c de l'isolant 4 sont rƩalisƩes en des matƩriaux diƩlectriques, notamment en des matƩriaux diƩlectriques diffƩrents.The parts 4a, 4b and 4c of the insulator 4 are made of dielectric materials, in particular of different dielectric materials.

La partie avant 4a de l'isolant est par exemple rĆ©alisĆ©e en un matĆ©riau diĆ©lectrique standard, par exemple du TĆ©flonĀ® de conductivitĆ© thermique Ć©gale Ć  1 W/m.K. Les parties mĆ©diane 4b et arriĆØre 4c sont par exemple rĆ©alisĆ©es en des matĆ©riaux diĆ©lectriques prĆ©sentant des valeurs de conductivitĆ© thermique supĆ©rieures Ć  celles du matĆ©riau diĆ©lectrique de la partie avant 4a. La partie arriĆØre 4c peut encore ĆŖtre rĆ©alisĆ©e en un matĆ©riau diĆ©lectrique prĆ©sentant une valeur de conductivitĆ© thermique supĆ©rieure Ć  celle du matĆ©riau diĆ©lectrique de la partie mĆ©diane 4b.The front portion 4a of the insulation is for example made of a standard dielectric material, for example TeflonĀ® 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.

Comme on peut le voir sur la figure 1, l'interface 13 entre la partie avant 4a et la partie mĆ©diane 4b de l'isolant, respectivement l'interface 14 entre la partie mĆ©diane 4b et la partie arriĆØre 4c de l'isolant 4, comporte au moins une portion 15, respectivement 16, s'Ć©tendant obliquement par rapport Ć  l'axe X du connecteur coaxial 1.As can be seen on the figure 1 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.

Dans l'exemple dĆ©crit, ces portions 15 et 16 dĆ©finissent des surfaces coniques. De telles surfaces coniques coupent les lignes de champs Ć©lectriques dans le connecteur coaxial 1, ces derniĆØres s'Ć©tendant radialement par rapport Ć  l'axe X du connecteur. De cette maniĆØre, les Ć©lectrons sont absorbĆ©s par les parties de l'isolant sans pouvoir ĆŖtre rĆ©Ć©mis, Ć©vitant d'Ć©ventuelles accumulations de charges.In the example described, 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.

Dans l'exemple de la figure 1, les portions 15 et 16 ne sont pas parallĆØles et s'Ć©cartent lorsque l'on s'Ć©loigne du contact central 3 vers le corps 2 du connecteur.In the example of the figure 1 , 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.

On va maintenant dĆ©crire plus en dĆ©tail en rĆ©fĆ©rence aux figures 2 et 3 des exemples de parties arriĆØre 4c d'isolant 4 de connecteur coaxiaux 1.We will now describe in more detail with reference to figures 2 and 3 examples of rear parts 4c of coaxial connector insulator 4 1.

Dans l'exemple de la figure 2, la partie arriĆØre 4c de l'isolant 4 comporte trois piĆØces distinctes, Ć  savoir un manchon 160 et deux mĆ¢choires 17. Les deux mĆ¢choires 17 sont destinĆ©es Ć  ĆŖtre appliquĆ©es contre l'isolant 10 du cĆ¢ble coaxial 8, de faƧon Ć  retenir le cĆ¢ble coaxial 8 sur le connecteur 1. Le manchon 160 entoure extĆ©rieurement les mĆ¢choires 17, maintenant ces derniĆØres sur l'isolant 10 du cĆ¢ble. Une telle partie arriĆØre 4c est particuliĆØrement adaptĆ©e au maintien d'un cĆ¢ble coaxial 8 de type semi rigide.In the example of the figure 2 , 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.

Dans la variante reprĆ©sentĆ©e Ć  la figure 3, la partie arriĆØre 4c de l'isolant est monobloc et comporte une portion prĆ©sentant un taraudage intĆ©rieur 19 pĆ©nĆ©trant dans l'isolant 10 du cĆ¢ble 8 lorsque le connecteur 1 est montĆ© sur le cĆ¢ble coaxial 8. Une telle partie arriĆØre 4c est particuliĆØrement adaptĆ©e pour le maintien sur le connecteur 1 d'un cĆ¢ble coaxial 8 de type souple. L'isolant 10 d'un tel cĆ¢ble souple peut ou non ĆŖtre prĆ©filetĆ© selon la souplesse du cĆ¢ble coaxial 8.In the variant shown in figure 3 , 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.

Dans d'autres variantes non reprĆ©sentĆ©es, l'isolant 4 ne comporte que deux parties distinctes et l'une desdites parties comporte un manchon 160 et deux mĆ¢choires 17, similairement Ć  ce qui a Ć©tĆ© dĆ©crit en rĆ©fĆ©rence Ć  la figure 2, ou ladite partie comporte une portion prĆ©sentant un taraudage intĆ©rieur 19, similairement Ć  ce qui a Ć©tĆ© dĆ©crit en rĆ©fĆ©rence Ć  la figure 3.In other variants not shown, 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 .

On va maintenant dƩcrire en rƩfƩrence Ơ la figure 5 un autre exemple de corps et d'isolant d'un connecteur coaxial selon l'invention. Dans cet exemple, le corps de connecteur 2 comporte deux parties 2a' et 2b' et l'isolant comporte cinq parties distinctes 4a', 4b', 4c', 4d', 4e' se succƩdant selon l'axe X du connecteur coaxial 1.We will now describe with reference to the figure 5 another example of a body and an insulator of a coaxial connector according to the invention. In this example, 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 .

La partie avant 4a' de l'isolant est par exemple rĆ©alisĆ©e en un matĆ©riau diĆ©lectrique standard qui est par exemple du TeflonĀ®, afin de conserver au connecteur coaxial une interface standard pour l'accouplement Ć  un connecteur coaxial complĆ©mentaire. Les parties intermĆ©diaires 4b' et 4d' sont dans l'exemple dĆ©crit rĆ©alisĆ©es dans des matĆ©riaux diĆ©lectriques ayant une conductivitĆ© thermique supĆ©rieure Ć  celle du matĆ©riau diĆ©lectrique de 1a partie avant 4a'.The front portion 4a 'of the insulation is for example made of a standard dielectric material which is for example TeflonĀ®, 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 '.

La partie 4c' est rƩalisƩe en verre ou en un matƩriau proche du verre, encore appelƩ perle de verre. Comme on peut le voir sur la figure 5, cette partie mƩdiane 4c' est entourƩe extƩrieurement par un ƩlƩment annulaire 11a' et elle est traversƩe intƩrieurement sensiblement en son milieu selon l'axe X par un contact central cylindrique 1 1b'. La partie mƩdiane 4c' est par exemple directement moulƩe sur l'ƩlƩment annulaire 11a' et le contact central cylindrique 11b'.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 '.

L'Ć©lĆ©ment annulaire 11a' et le contact central cylindrique 11b' sont par exemple rĆ©alisĆ©s en un matĆ©riau mĆ©tallique ayant une dilation thermique proche de celle du verre, par exemple en Dilver PĀ®.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 PĀ®.

Dans l'exemple dƩcrit l'ƩlƩment annulaire 11a', le contact central 11b' et la partie mƩdiane 4c' de l'isolant sont brasƩs au laser sur la partie 2b' du corps.In the example described the annular element 11a ', the central contact 11b' and the middle part 4c 'of the insulator are laser brazed on the body part 2b'.

La partie arriĆØre 4e' de l'isolant peut ĆŖtre rĆ©alisĆ©e en un matĆ©riau diĆ©lectrique standard qui est par exemple du TĆ©flonĀ®, afin de conserver au connecteur coaxial l'une interface standard pour la rĆ©ception du cĆ¢ble coaxial.The rear part 4 '' of the insulation can be made of a standard dielectric material which is for example Teflon Ā® , in order to keep the coaxial connector a standard interface for receiving the coaxial cable.

La partie 4c' de l'isolant dƩfinit par exemple avec les parties adjacentes 4b' et 4d' de l'isolant des interfaces qui prƩsentent des pentes contraires, de faƧon Ơ ce que la partie 4c' soit de forme biconique, ce qui peut permettre de confƩrer des propriƩtƩs hermƩtiques au connecteur obtenu tout en limitant les risques liƩs Ơ l'effet multipactor.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.

Le corps 2, le manchon 6 et/ou le bouchon 5 peuvent comporter sur au moins une portion de leur surface latĆ©rale extĆ©rieure, notamment sur la totalitĆ© de leur surface latĆ©rale extĆ©rieure, un revĆŖtement 20 prĆ©sentant un rapport absorptivitĆ© thermique sur Ć©missivitĆ© thermique infĆ©rieur Ć  1, ce qui peut permettre d'amĆ©liorer la dissipation de chaleur vers l'extĆ©rieur par le corps 2, le manchon 6 et/ou le bouchon 5. Ce revĆŖtement 20 comprend par exemple une couche 21 en mĆ©tal brillant, par exemple en argent, recouverte d'une couche 22 en rĆ©sine fluorĆ©e, par exemple en PTFE.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.

L'invention n'est pas limitĆ©e aux exemples qui viennent d'ĆŖtre dĆ©crits.The invention is not limited to the examples which have just been described.

Dans les revendications, l'expression Ā« comportant un Ā» doit ĆŖtre comprise comme synonyme de l'expression Ā« comportant au moins un Ā» sauf si le contraire est spĆ©cifiĆ©.In the claims, the phrase "having one" should be understood as synonymous with the phrase "having at least one" unless otherwise specified.

Claims (15)

Connecteur coaxial (1) comprenant : - un corps (2), et - un contact central (3) montrƩ dans le corps (2) avec interposition d'un isolant (4),
caractĆ©risĆ© par le fait que l'isolant (4) comporte au moins deux parties distinctes (4a, 4b, 4c) : a) sĆ©parĆ©es par une interface (13, 14) prĆ©sentant au moins une portion (15, 16) s'Ć©tendant obliquement par rapport Ć  l'axe (X) du connecteur (1) et/ou b) rĆ©alisĆ©es dans des matĆ©riaux diĆ©lectriques diffĆ©rents, le connecteur Ć©tant configurĆ© pour rĆ©sister Ć  des phĆ©nomĆØnes de claquage en altitude, notamment dans des conditions de vide. Coaxial connector (1) comprising: a body (2), and a central contact (3) shown in the body (2) with interposition of an insulator (4),
characterized by the fact that the insulator (4) has at least two distinct parts (4a, 4b, 4c): a) separated by an interface (13, 14) having at least one portion (15, 16) extending obliquely with respect to the axis (X) of the connector (1) and / or b) made of different dielectric materials, the connector being configured to withstand the phenomena of breakdown at altitude, especially in vacuum conditions. Connecteur selon la revendication 1, caractĆ©risĆ© par le fait que les au moins deux parties distinctes (4a, 4b, 4c) de l'isolant sont sĆ©parĆ©es par une interface (13, 14) prĆ©sentant au moins une portion (15, 16) s'Ć©tendant obliquement par rapport Ć  l'axe (X) du connecteur (1).Connector according to Claim 1, characterized in that the at least two distinct parts (4a, 4b, 4c) of the insulator are separated by an interface (13, 14) having at least a portion (15, 16) of extending obliquely with respect to the axis (X) of the connector (1). Connecteur selon la revendication 1, caractĆ©risĆ© par le fait que les deux parties distinctes (4a, 4b, 4c) de l'isolant sont rĆ©alisĆ©es dans des matĆ©riaux diĆ©lectriques diffĆ©rents.Connector according to claim 1, characterized in that the two distinct parts (4a, 4b, 4c) of the insulator are made of different dielectric materials. Connecteur selon la revendication 3, caractĆ©risĆ© par le fait que l'une des parties de l'isolant est rĆ©alisĆ©e en un matĆ©riau diĆ©lectrique prĆ©sentant une valeur de conductivitĆ© thermique diffĆ©rente de celle du matĆ©riau diĆ©lectrique de l'autre partie de l'isolant.Connector according to Claim 3, characterized in that one of the insulating parts is made of a dielectric material having a thermal conductivity value different from that of the dielectric material of the other part of the insulator. Connecteur selon l'une quelconque des revendications prĆ©cĆ©dentes, caractĆ©risĆ© par le fait que l'isolant comporte une partie avant (4a), une partie arriĆØre (4c) et une partie mĆ©diane (4b) entre la partie avant (4a) et la partie arriĆØre (4c) selon l'axe (X) du connecteur coaxial.Connector according to any one of the preceding claims, characterized in that the insulator comprises a front part (4a), a rear part (4c) and a middle part (4b) between the front part (4a) and the rear part (4c) along the axis (X) of the coaxial connector. Connecteur selon la revendication 5, caractĆ©risĆ© par le fait que l'interface (13) entre la partie avant (4a) et la partie mĆ©diane (4b) de l'isolant prĆ©sente au moins une portion (15) s'Ć©tendant obliquement par rapport audit axe (X) du connecteur et par le fait que l'interface (14) entre la partie mĆ©diane (4b) et la partie arriĆØre (4c) de l'isolant prĆ©sente au moins une portion (16) s'Ć©tendant obliquement par rapport audit axe (X) du connecteur.Connector according to claim 5, characterized in that the interface (13) between the front part (4a) and the middle part (4b) of the insulator has at least one portion (15) extending obliquely with respect to said axis (X) of the connector and in that the interface (14) between the middle part (4b) and the rear part (4c) of the insulation has at least one portion (16) extending obliquely with respect to said axis (X) of the connector. Connecteur selon l'une quelconque des revendications 1 Ć  6, caractĆ©risĆ© par le fait qu'une partie de l'isolant, notamment la partie arriĆØre (4c) de l'isolant, est configurĆ©e pour exercer une action de maintien sur l'isolant d'un cĆ¢ble coaxial (8) sur lequel le connecteur est montĆ©.Connector according to any one of Claims 1 to 6, characterized in that a part of the insulator, in particular the rear part (4c) of the insulator, is configured to exert a holding action on the insulation of a coaxial cable (8) on which the connector is mounted. Connecteur selon la revendication 7, caractĆ©risĆ© par le fait que le matĆ©riau diĆ©lectrique de ladite partie de l'isolant prĆ©sente un coefficient d'expansion linĆ©aire thermique infĆ©rieur Ć  celui du diĆ©lectrique du cĆ¢ble.Connector according to claim 7, characterized in that the dielectric material of said part of the insulator has a linear coefficient of thermal expansion lower than that of the dielectric of the cable. Connecteur selon la revendication 7 ou 8, caractĆ©risĆ© par le fait que ladite partie de l'isolant comporte deux mĆ¢choires (17) configurĆ©es pour s'appliquer contre l'isolant du cĆ¢ble coaxial (8) et un manchon (160) entourant extĆ©rieurement les mĆ¢choires (17).Connector according to claim 7 or 8, characterized in that said part of the insulator comprises two jaws (17) configured to rest against the insulation of the coaxial cable (8) and a sleeve (160) externally surrounding the jaws (17). Connecteur selon la revendication 7 ou 8, caractĆ©risĆ© par le fait que ladite partie de l'isolant comporte une portion taraudĆ©e (19) configurĆ©es pour s'appliquer contre l'isolant du cĆ¢ble coaxial (8).Connector according to claim 7 or 8, characterized in that said part of the insulator comprises a threaded portion (19) configured to be applied against the insulation of the coaxial cable (8). Connecteur selon l'une quelconque des revendications 1 Ć  10, caractĆ©risĆ© par le fait que la portion (15, 16) de l'interface (13, 14) s'Ć©tendant obliquement par rapport Ć  l'axe (X) du connecteur dĆ©finit une surface conique.Connector according to any one of claims 1 to 10, characterized in that the portion (15, 16) of the interface (13, 14) extending obliquely with respect to the axis (X) of the connector defines a conical surface. Connecteur selon l'une quelconque des revendications 1 Ć  4, caractĆ©risĆ© par le fait que l'isolant comporte une partie avant (4a'), une premiĆØre partie intermĆ©diaire (4b'), une partie mĆ©diane (4c'), une deuxiĆØme partie intermĆ©diaire (4d') et une partie arriĆØre (4e') selon l'axe (X) du connecteur coaxial, deux au moins desdites parties dĆ©finissant entre elles une interface comportant au moins une portion s'Ć©tendant obliquement par rapport audit axe (X) du connecteur,
l'interface entre la premiĆØre partie intermĆ©diaires (4b') et la partie mĆ©diane (4c') de l'isolant dĆ©finissant une surface conique et l'interface entre la partie mĆ©diane (4c') et la deuxiĆØme partie intermĆ©diaire (4d') de l'isolant dĆ©finissant une surface conique, de faƧon Ć  ce que la partie mĆ©diane (4c') de l'isolant ait une forme biconiqueConnector according to any one of claims 1 to 4, characterized in that the insulator comprises a front portion (4a '), a first intermediate portion (4b'), a middle portion (4c '), a second intermediate portion (4d ') and a rear part (4e') along the axis (X) of the coaxial connector, at least two of said parts defining between them an interface comprising at least one portion extending obliquely with respect to said axis (X) of the connector,
the interface between the first intermediate part (4b ') and the middle part (4c') of the insulator defining a conical surface and the interface between the middle part (4c ') and the second intermediate part (4d') of the insulator defining a conical surface, so that the median portion (4c ') of the insulator has a biconical form Connecteur selon l'une quelconque des revendications prĆ©cĆ©dentes, caractĆ©risĆ© par le fait que sa surface extĆ©rieure comporte sur au moins une portion un revĆŖtement (20) prĆ©sentant un rapport absorptivitĆ© thermique sur Ć©missivitĆ© thermique infĆ©rieur Ć  1.Connector according to any one of the preceding claims, characterized in that its outer surface comprises on at least one portion a coating (20) having a thermal absorptivity to thermal emissivity ratio of less than 1. Connecteur coaxial (1), comprenant : - un corps (2), et - un contact central (3) montĆ© dans le corps (2) avec interposition d'un isolant (4),
caractĆ©risĆ© par le fait que sa surface extĆ©rieure comporte sur au moins une portion un revĆŖtement (20) prĆ©sentant un rapport absorptivitĆ© thermique sur Ć©missivitĆ© thermique infĆ©rieur Ć  1. Coaxial connector (1), comprising: a body (2), and - a central contact (3) mounted in the body (2) with the interposition of an insulator (4),
characterized in that its outer surface has on at least a portion a coating (20) having a thermal absorptivity to thermal emissivity ratio of less than 1. Connecteur coaxial (1) comprenant : - un corps (2), et - un contact central (3) montƩ dans le corps (2) avec interposition d'un isolant (4),
caractƩrisƩ par le fait que l'isolant (4) comporte au moins deux parties distinctes (4a, 4b, 4c) sƩparƩes par une interface (13, 14) prƩsentant au moins une portion (15, 16) s'Ʃtendant obliquement par rapport Ơ l'axe (X) du connecteur (1)
et/ou
caractĆ©risĆ© par le fait qu'une partie de isolant, notamment la partie arriĆØre (4c) de l'isolant, est configurĆ©e pour exercer une action de maintien sur l'isolant d'un cĆ¢ble coaxial (8) sur lequel le connecteur est montĆ©. Coaxial connector (1) comprising: a body (2), and - a central contact (3) mounted in the body (2) with the interposition of an insulator (4),
characterized by the fact that the insulator (4) has at least two distinct parts (4a, 4b, 4c) separated by an interface (13, 14) having at least one portion (15, 16) extending obliquely with respect to the axis (X) of the connector (1)
and or
characterized in that a portion of insulation, in particular the rear portion (4c) of the insulation, is configured to exert a holding action on the insulation of a coaxial cable (8) on which the connector is mounted.
EP10163624.9A 2009-05-29 2010-05-21 Very-high-power connector Active EP2256876B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0953562A FR2946185B1 (en) 2009-05-29 2009-05-29 VERY HIGH POWER CONNECTOR

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EP2256876A1 true EP2256876A1 (en) 2010-12-01
EP2256876B1 EP2256876B1 (en) 2015-04-08

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ID=41382166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10163624.9A Active EP2256876B1 (en) 2009-05-29 2010-05-21 Very-high-power connector

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US (1) US8414327B2 (en)
EP (1) EP2256876B1 (en)
CN (1) CN101901983B (en)
FR (1) FR2946185B1 (en)

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CN103545935A (en) * 2012-07-10 2014-01-29 č‹å·žå¼ ę‰¬čƒ½ęŗē§‘ęŠ€ęœ‰é™å…¬åø Energy accumulation flange

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CN102832497A (en) * 2012-09-13 2012-12-19 ē”µå­ē§‘ęŠ€å¤§å­¦ High-voltage resistant connector with vacuum sealing function
CN103066403B (en) * 2012-12-26 2016-02-24 äø­čˆŖ光ē”µē§‘ęŠ€č‚”ä»½ęœ‰é™å…¬åø A kind of power connector and contact thereof
US8926360B2 (en) * 2013-01-17 2015-01-06 Cooper Technologies Company Active cooling of electrical connectors
CN105022089B (en) 2014-04-17 2019-07-09 英ꓛē“¦(å¤©ę“„)ē‰©ęŽ¢č£…å¤‡ęœ‰é™č“£ä»»å…¬åø Cable transfers loads equipment
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US10424424B2 (en) * 2017-06-16 2019-09-24 The Boeing Company Coaxial radio frequency connectors for high-power handling
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CN110600952A (en) * 2018-06-12 2019-12-20 äøŠęµ·é›·čæŖ埃ē”µå­ęœ‰é™å…¬åø High-power tolerance blind-mate coaxial connector
JP7280234B2 (en) * 2020-11-25 2023-05-23 ēŸ¢å“Žē·ę„­ę Ŗ式会ē¤¾ connector
TWM613369U (en) * 2021-04-07 2021-06-11 åø›ę±Ÿē§‘ęŠ€č‚”ä»½ęœ‰é™å…¬åø Coaxial connector
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Also Published As

Publication number Publication date
FR2946185B1 (en) 2012-10-19
CN101901983A (en) 2010-12-01
FR2946185A1 (en) 2010-12-03
US20100304607A1 (en) 2010-12-02
US8414327B2 (en) 2013-04-09
EP2256876B1 (en) 2015-04-08
CN101901983B (en) 2015-02-04

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