Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/28—Clamped connections, spring connections
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
  • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
  • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
• • 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

• Coaxial connector element comprising a connector for connecting the central conductor of a coaxial cable to the central contact of the connector element.
• the present invention relates to a coaxial connector element comprising a connector for connecting the central conductor of a coaxial cable to the central contact of the connector element.
• a coaxial connector element has a central contact and an external contact.
• the central contact is intended to be connected to the central conductor of a coaxial cable and the external contact, to the external conductor of the coaxial cable, which is generally a braid ensuring earthing.
• the central contact is soldered by its rear end to the central conductor, while the external contact, or the body of the connector element to which it is connected, is crimped onto the braid.
• the crimping of the braid does not pose any particular difficulty and almost always gives satisfaction.
• a solution has already been proposed to resolve these drawbacks for a bent connector element, consisting in providing, at the end of the central contact opposite its connection end, a fork constituted by two elastic arms and, on the central conductor of the coaxial cable, a fitting arranged to snap between the two arms of the fork of the central contact.
• This fitting eliminates the need for soldering inside the connector element and ensures that a predetermined impedance is obtained.
• the connector can only snap into place with the central contact if the latter is properly oriented, that is to say has the space separating the two arms of its fork opposite the radial opening. It is therefore necessary, in addition to the connector, to provide polarization forms on the body of the connector element and on the central contact, to oppose the rotation of the latter, which in particular involves operations of specific machining which encumber the cost price of the connector element.
• the present invention aims to provide a new solution to this problem of brazing the central conductor of the cable on the central contact of the connector element.
• the subject of the present invention is a coaxial connector element, intended to be mounted at the end of a coaxial cable comprising a central conductor and an external conductor, the connector element comprising:
• a central contact having a longitudinal axis and comprising a rear end connected to the central conductor of the coaxial cable and a front end arranged for the connection of the connector element with a complementary connector element and - an external contact connected to the external conductor of the coaxial cable, characterized in that it comprises a connector mounted on the central conductor of the coaxial cable, this connector and the rear end of the central contact being shaped to snap together with the other independently of the angular orientation of the central contact with respect to its longitudinal axis.
• the connector according to the invention has the advantage, compared to the known connector, that its snap-fastening with the central contact of the connector element is ensured regardless of the angular position of the central contact, which can thus be free to rotate around its axis.
• the connector element is bent. It then comprises a body constituted by a substantially cylindrical connection part, in which the central contact and the external contact are housed, and by a cable connection part also substantially cylindrical, provided with a radial sleeve for the arrival of the cable. .
• the rear end of the central contact has a groove of revolution of the same axis as the longitudinal axis of the central contact, while the connector has a fork elastic with two arms defining between them a housing for the groove, the latching of the groove in the housing of the fork being effected by fitting the groove in the fork in a direction perpendicular to the longitudinal axis of the contact, spacing of the two fork arms and elastic return of the latter once the groove has reached the housing.
• the housing is delimited by two cylindrical recesses opposite one another, whose axes are parallel to the plane of separation of the two arms and which are each produced on an inner face of each arm of the fork.
• the diameters of the cylindrical recesses are less than the diameter of the groove of the central contact, which makes it possible to concentrate the contact pressures between the elastic arms of the fork and the groove on the sharp edges of the recesses, so as to avoid the formation of oxides on the contact surfaces, by limiting the quantity of oxidizing gases which can infiltrate between said contact surfaces.
• the free end of each arm of the fork is arranged in a point so as to impart a torque to the connector and, consequently, to the central conductor of the cable, if the connector enters in contact with the groove of the central contact while being angularly offset from its normal latching position.
• each arm of the fork can be delimited by two cylindrical recesses of axes perpendicular to the plane of separation of the two arms and located on either side of a median plane of the fitting perpendicular to the plane separating the two arms of the fork.
• the point shape of the arms of the fork is particularly useful because the insertion into the cable connection part of the fitting mounted at the end of the coaxial cable, is carried out blind, that is to say with loss of visual control of the correct orientation of the fitting relative to the groove of the central contact.
• edges of the points serve as angular guide cams for the fitting on the groove.
• the torque thus created can either be sufficient to automatically cause the correct positioning of the fitting, in the event of a very small angular offset, the central conductor of the cable then absorbing the offset by twisting slightly in the coaxial cable, or encourage the operator who installs the fitting in the connector element to rotate the cable to bring the fitting into the correct angular position.
• connection is obtained by cutting and rolling. In another embodiment, the connector is obtained by machining.
• the connector is crimped onto the central conductor of the coaxial cable. It is understood that, thanks to the invention, it is no longer necessary to provide access opposite the connection face of the connector element.
• the connector element according to the invention may comprise a bent body without opening on its face opposite to its connection face.
• FIG. 1 is an axial section view of a coaxial connector element according to the invention
• FIG. 2 is an elevation view of the central contact of the connector element of FIG. 1,
• FIG. 3 is an elevation view of the connector
• FIG. 4 is a top view of FIG. 3,
• FIG. 5 is a perspective view of the connector snapped onto the central contact
• FIG. 6 to 9 show the contact and the connector during the latching maneuver.
• the connector element 1 shown in the drawing comprises a body in two parts, namely a cylindrical connection part 2 and a cable connection part 3 which extends the connection part to its rear part and comprises an anvil sleeve projecting radially near the rear face 5 of the connector element.
• connection part of the body there is, from the outside to the inside, an elastic ground contact 6 which is force fitted into the connection part 2, a tubular insulator 7 and a central contact 8.
• connection part of the connector element will not be explained here since the invention applies to all kinds of connection interfaces and is therefore not limited to the interface shown in the drawing.
• the cable connection part 3 of the body is crimped at 9 on the connection part and defines, behind the connection part 2, a housing 10 for the rear end 11 of the central contact 8 and for a connector 12 intended for be secured to the end of the central conductor (not shown) with a coaxial cable (not shown).
• the connector 12 extends radially relative to the connection part 2 and coaxially to the anvil sleeve 4 of the connection part.
• the coaxial cable (not shown) penetrates, in the known manner, into the body of the connector element in the following manner.
• the braid of the cable which constitutes its external ground conductor, is applied to the external wall of the anvil sleeve 4 and is crushed there by a crimping sleeve 13 which surrounds the anvil sleeve 4.
• the central conductor and its sheath enters the anvil sleeve 4 and the connector 12 is crimped on the central conductor.
• the central contact 8 comprises, at its front end 14, an elastic zone which is capable of moving away to be force fitted or snapped into place, depending on the type of interface considered, on the central contact of a complementary connector element.
• the central contact 8 has different shoulders and flanges, in its central region, which allow its retention inside the tubular insulator 7.
• the central contact At its rear end 11, the central contact has a groove 15 of revolution terminated by a flat head 16.
• This head makes it possible to adapt the line to impedance.
• the connector 12 which is shown in elevation in FIGS. 3 and 4, comprises a crimping part 17 at the rear, intended to be crushed on the central conductor of the coaxial cable, and an elastic part 18 at the front constituted by two arm 19 cut from a cylinder of revolution and separated by a space 20 according to a separation plane passing through the axis of the fitting.
• the two arms 19 thus separated have a slight elasticity which allows them to move away from one another.
• the elastic arms 19 of the connector have recesses 21 facing each other.
• Each obviously 21 has a cylindrical shape with an axis parallel to the plane of separation of the elastic arms and perpendicular to the axis of the connector.
• the two obviously cylindrical 21 facing each other define a substantially cylindrical housing intended to receive the groove of revolution 15 of the central contact 8.
• the diameter of each recess 21 is less than the diameter of the groove 15 so that each of the recesses, once the snap-in has been made, is supported on the groove by its sharp edges 22.
• the purpose of such an arrangement is to make the contact between the elastic tabs of the fitting and the groove as tight as possible so that oxidizing gases present in the ambient air do not create oxidation of the surfaces in mutual support of the fitting and the contact.
• each elastic tab of the connector is shaped as a point to constitute exhaust ramps of the connector in the event of poor angular presentation of the latter opposite the groove, as will be explained.
• Each point of an elastic arm is delimited by concave cylindrical shapes 24 with an axis perpendicular to that of the housing provided between the elastic tabs.
• Each concave shape 24 is located on either side of a median plane of the fitting.
• the first circumstance is that in which the connector has a slight angular phase shift relative to its latching position on the groove.
• the torque exerted by the circular ramps of the tips is sufficient to twist the central conductor of the cable and the connector is oriented properly without the operator having to modify the orientation of the cable.
• the second circumstance is that in which the angular phase shift of the connector is very significant.
• the torque exerted by the guide ramps is transmitted, by the central conductor of the twisted cable, to the fingers of the operator who then realizes that he must slightly release the cable or, better, rotate it in the right direction to allow the fitting to snap onto the groove.

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• Coupling Device And Connection With Printed Circuit (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9529275

Family Applications (1)

Country Status (8)

Families Citing this family (33)

Family Cites Families (5)

• 1998
  • 1998-07-31 FR FR9809863A patent/FR2781934B1/fr not_active Expired - Fee Related
• 1999
  • 1999-07-30 DE DE69911904T patent/DE69911904D1/de not_active Expired - Lifetime
  • 1999-07-30 AU AU51678/99A patent/AU5167899A/en not_active Abandoned
  • 1999-07-30 WO PCT/FR1999/001897 patent/WO2000008723A1/fr active IP Right Grant
  • 1999-07-30 JP JP2000564267A patent/JP2003526872A/ja active Pending
  • 1999-07-30 US US09/509,609 patent/US6287144B1/en not_active Expired - Fee Related
  • 1999-07-30 CN CN99801244A patent/CN1110111C/zh not_active Expired - Fee Related
  • 1999-07-30 DE DE1019982T patent/DE1019982T1/de active Pending
  • 1999-07-30 EP EP99936656A patent/EP1019982B1/de not_active Expired - Lifetime

Non-Patent Citations (1)

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