FR2533768A1 - ELECTRICAL CONNECTOR - Google Patents

Abstract

THE CONNECTOR ACCORDING TO THE INVENTION, OF THE FRONT LOADED TYPE, IS APPLIED TO THE CONNECTION OF THE CONDUCTORS OF A COAXIAL CABLE. THE CONNECTOR INCLUDES MEANS TO ALLOW THE RADIAL FLOATING OF CONTACT PART 2, 3 TO REDUCE THE RISK OF RUPTURE OF CENTRAL PIN 2 DURING BLIND MOUNTING OPERATIONS. A FLARE 23 SPRING IS USED; IT TAKES SUPPORT BETWEEN THE BODY 1 OF THE CONTACT UNIT AND AN EXTERIOR HAIRDRESS 8 SO AS NOT TO BE ABLE TO PENETRATE AND STUCK IN THE SPACE 21, 30 HOUSEHOLD BETWEEN THE BODY 1 AND THE HAIRDRESS 8 TO ALLOW FLOATING.

Description

1.-

  The invention relates to electrical connectors.

  ques, and it relates more particularly to connectors

  cables used for coaxial cables.

  Electrical connectors for coa-

  xials generally consist of two parts which couple These parts, which are intended to couple, come into contact by the conductors of the center and the

  periphery when interconnecting the connector

  electric tor To make such connections,

  usually makes contact with the center conductor and

  the outer conductors, the central conductor being

  linked by a pin which is inserted into a suitable receptacle. It is common during such operations dl

  coupling, that the electric pin does not come correct

  securely in place in the receptacle and therefore

  breaks A solution to remedy this difficulty

  is to provide for a possibility of appreciable radial floating

  ciable so that the spindle is subjected to a movement practically without friction when it moves in the receptacle, the spindle being able to thus come in alignment with the receptacle without it breaking while one realizes

  this connection Such a floating or radial clearance is generally

  This is allowed by the fact that there is a space between the

  veloppe and the body of the connector parts to allow a radial displacement relative to a longitudinal axis which is that of the central pin of the connector. Such spacing is provided at various places between the casing and

  the body that defines the connector, a coil spring

  dal being generally disposed between the envelope and the body

  to allow the radial floating movement while

  putting good flexibility in the coupling assembly

  between the connector and the receptacle.

  Another difficulty encountered in connec-

  teurs, especially those of small stature, resides in

  the fact that the coil spring can slide and insert

  rer in the spaces that exist between the envelope and the

  body, the spring, when it is in this position

2.

  te by sliding, being blocked in spaces and em-

  fishing for any free movement between the envelope and the body.

  In addition, it is desirable that the central pin centers itself even if it deviates from its axial centered position due to the possibility of radial floating of the connector. The assembly with the helical spring cannot

  not concretely help the self-centering of the spindle of the con-

  nector, this can lead to deterioration when

  makes the connections between the connector and the receptacle.

  Generally, the connector plugs are

  tees or loaded from behind behind the connector pin

  Such rear load connectors are widely

  used When using a flexible cable, especially

  link a small flexible cable, we can do

  preferably use the connector described in the US patent

  cain 4 093 335 This connector is known as a "Wedge Lock" and is used for connecting cables

  flexible This connector is of the rear load type,

  me many others of the same type but in some

  In this case, it is not possible to assemble a floating connector.

  radially from the rear It is therefore important and desirable

  table to propose and provide a structure that allows

  the front load of a connector intended for coa-

flexible xials.

  The invention aims to provide an electrical connector for coaxial cables in which a spring is disposed between the body and the housing of the connector,

  means being provided to prevent locking or jamming

  spring in the spaces that allow the fleet-

  radial connector to occur.

  Another object of the invention is to provide such a connector in which the central pin can deviate

  from the central position while being able to easily re -

  centering Yet another object of the invention is to provide a connector which can be assembled from the front, while making appreciable radial floating possible for flexible coaxial cables 3-

  These and other goals are achieved, according to the

  vention, by the fact that there is provided a set of tye connection plug in which a central pin is supported

  in an inner body around which is placed a

  connector cover or cap An appreciable gap is left between the body and the casing to allow

  radial floating; a flaring spring is dis-

  placed between the body and the envelope and it rests, ex-

  front end of the body, against a lower corner and, at the

  rear, against an upper corner, the spring being available

  dried to remain in place during radial floating without

  wedge in the space between the body and the envelope

loppe.

  Thanks to this spring, a compressive force is obtained.

  increased sion which allows self-centering of the connector.

  The envelope and body sub-assemblies are formed of constituents which allow an assembly or charge of

  the connector plug from the front In addition, the sub-

  seems plug allows an improved connection between the teeth projecting from the connection corner which electrically connects the outer conductor of the cable and the outer conductor of

the connector plug.

  The invention will be clearly understood using the

  description which follows of a preferred embodiment of the invention and with reference to the accompanying drawing, the single figure of which is a longitudinal section of a connector according to

the invention with coupled plugs.

  The "Wi Ve 4 ge Lock" type connector, or connector

  locking wedge, used in this in-

  vention is more particularly described in the US patents 3,107,135 and 4,093,335 This kind of connector

  is used for flexible coaxial cables.

  These patents may be referred to for further details concerning the corner assemblies and sub-assemblies. The locking corner sub-assembly comprises,

  in general, a hollow corner 10 having a sur-

  face facing back which widens and cooperates

4.

  re by coupling with a fitting 11 of complete shape

  the outer conductor or braid being taken

  tre the corner 10 and the fitting 1 'I when a corner nut 12 is tightened in place by pulling the fitting II against the corner 12 A washer 13 facilitates the rotation of the nut 12 during the tightening of the latter to pull the fitting against

the corner.

  The outer conductor of the cable is electric-

  ment connected, by the corner 10, to the external contact 3 of the

  plug assembly by means of conductive parts which are constituted by an annular ring 14 pressing against an annular part 15 with a shoulder, this part 15 being itself in abutment against the front external contact

  3 which is part of the Lafiche sheet subset of the

  nector comprises a body 1 which extends from the front part of the plug to the rear corner sub-assembly, this body

  1 allowing corner 10 to be connected to the connector plug

  tor, as described below The central conductor of the coaxial cable passes with its insulator through the central bore of the

  corner 10 to reach a cavity 16 formed in the sub-

  plug assembly, the wall of this cavity being in electrical contact with the central contact pin 2 Thus, the central conductor of the coaxial cable is stripped and forced into the cavity 16 to be in electrical contact with the central contact pin 2 At the same time , the outer conductor or braid of the cable is electrically connected to the outer contact ring 3 via the wedge and the conductive parts 14, 15 The front face of the wedge has teeth 17 which are spaced radially apart; the corner 10, as well as its teeth 17, can be formed

  made of beryllium copper The conductor 14 in the form of a ba-

  Gue or socket is made of stainless steel and is less hard than beryllium copper, which allows good anchoring between the teeth 17 of the corner and the conductor 14 of the contact sub-assembly After the sub-assemblies of corner and body have been produced, as well as the central contact sub-assembly, a loading or mounting of the connector plug 5 is carried out from the front. It should be noted that an insulator, generally of hollow cylindrical shape, is disposed around the central contact subassembly to separate the external contact 3 from with the central contact 2 This insulator 5 extends substantially from the interface between the front part of the corner and the accessible front part of the

  plug subassembly which must be coupled to a receptacle

  corresponding key The corner sub-assembly also includes an insulator 9, also of hollow cylindrical shape, which

  is coaxial with insulation 5 and provides electrical insulation

  continuous stick between the central contact cavity 16 and the external electrical conductors constituted by

  the corner 10 and the conductors 14 and 15.

  After the central corner and contact sub-assembly J 5 has been produced, a cap 8, made of steel

  stainless and generally cylindrical in shape, which

  wears a tiered front part, is threaded on this

  together and comes to rest against a corresponding surface

  dante 18 of the body Next, a helical spring 23, which

  is flared from front to back by an increase

  tion of its diameter, is placed in a housing or groove

  19 formed externally on the body 1 A space annulai-

  re 30 is provided between the rear inner annular surface

  of the cap 8 and the part of the body 1 located in this

  te zone In addition, another annular space 21 is provided

  between the front part 22 of the cap 8 and the body part

  body respondent 1 This space provides a

  appreciable floating or radial clearance for the plug

  nector The front end of the spring 23 rests against a front shoulder 34 defining the housing 19; a ring 4, for example a split ring, is threaded on the front part of the body 1 until it comes to be housed in

  a rebate 33 preceding the shoulder 34 For this po-

  sition, the ring rests against the body 1 to axially hold the flared helical spring 23 Thus, the front end 35 of the helical spring 23 is housed against the shoulder 34 and retained by the ring 4 and the body 1, while that its rear end, which is larger in diameter, is supported in an inner corner 32 facing towards the front and defined in the cover 8 In this way, the spring 23 is kept in place and its front part cannot get caught or get caught in the space or cavity 21 which exists between the ring 4 and the cap 8, while

  its rear end cannot be caught or wedged

  cer in the space or cavity 30 formed between the ar surface

  inner annular ring 20 of the cap 8 and the corresponding part of the body 1 In addition, because the spring

  25 is flared, it provides, for the same dimension, a form

  this compression significantly larger than that which

  would be obtained with a usual coil spring; at the-

  the more this arrangement promotes self-centering of the contact

  when it is released from an off center position.

  An annular seal 6 is arranged, for reasons

  sealing sounds, around conductor 15 to protect

  inside the connector sub-assembly.

  The invention has been described with reference to a mode

  preferred embodiment The use of a helical spring

  coldal flared or tapered in a connector that has radial float characteristics can be applied

  has any type of single or multiple pin connector

  using such floating characteristics

  dial In addition, the assembly or mounting of the connector plug

  nector from the front can be applied with a plug

  straight connector or with a straight connector plug

  of course, depending on the case Of course, various variants and modi-

  fications can be planned without departing from the scope of

  the invention; this is how, instead of using a res-

  helical wire pull we could call for example-

  ple to a spring element of the telescopic type -

7.

Claims (7)

  1 electrical connector, comprising at least one central pin (2), an external electrical contact member (3), a cover or casing (8) and a body (1), a space (21, 30) being provided between the cover and the body to allow the central spindle to float   radially with respect to the cap to facilitate bra-   the central spindle on a corresponding receptacle   or similar without breaking said spindle, characteristic   se by the fact that it further comprises: means to-   fate (23) arranged between the body (1) and the cap (8) and   surrounding said body, the spring means being evacuated   ses so as to have one end larger than the other, said radial floating of the central spindle being made possible by a first annular space (21) formed around said body (1) in the region of the spindle   central and by a second annular space (30) formed in   be the body (1) and the cap (8) at the rear of the assembly   ble comprising the central spindle; means (4, 34) for constituting a support angle at the rear of said first annular space (21), the small end of the spring means coming to bear against this front seat angle, the cover (8) comprising means to form an angle   rear seat (32), in front of the second canceled space   re (30), the large end of the spring means (23) coming to bear against this rear seat angle, and the   flared spring means being maintained between said an-   front and rear seat pads when the central spindle (2) moves radially during its floating movement relative to said cap (8).   2 connector according to claim 1, character-   laughed at by the fact that said flared spring means   carry a wire coil spring   3 connector according to claim 1, character-   laughed at by the fact that said flared spring means   tent a spring member of the telescopic type.   4 connector according to one of claims I   to 3, characterized in that the said means to res-   8 ;. flared fate are arranged to exert on said body (1) a compressive force when the central pin (2) is   moves radia 2 ely with respect to the cover (8), the mo-   spring yen moving the central spindle (2) towards a po-   self-centering position when released from a position off center.   Connector according to one of claims 1 to   4, characterized in that it is of the dependent type or   front mounting, the body (1) comprising a first   inside front annular shoulder (34), the means to   fate (23) being placed between a base surface (32) of the cap (8) and said first shoulder 3 4), said body comprising a second annular shoulder / larger than the   first annular shoulder (34) and located at the front of this   itself, means & ring (4) being arranged to press against said elastic means to lock them in place and resting in said second annular shoulder (33).   6 Connector according to one of claims 1 to   5, characterized in that the central spindle (2) and the   the external electrical contact (3) are respectively   electrically linked with the corresponding electrical conductors coaxial cable.   7 connector according to claim 6, character-   rized by the fact that the external electrical contact (3) is in electrical connection with the conductor or external press of the coaxial cable through an annular conductive member (14), the coaxial cable being connected to a wedge assembly (10,   11) which brings the central conductor and the external conductor   coaxial cable to the contact part of the connector tor.   8 connector according to claim 7, character-   laughed at by the fact that the wedge assembly has a conduc-   copper beryllium content which ensures electrical continuity   stick towards the external contact (3), this conductor in   beryllium glass with gripping teeth (17)   in the material of the contact part, the conductor annu-   the slide (14) being made of stainless steel to increase the ef- grip of the teeth (17).