FR2524211A1 - ELECTRICAL CONNECTOR - Google Patents

Abstract

THE ELECTRICAL CONNECTOR ACCORDING TO THE INVENTION INCLUDES A MALE PART 21 AND A FEMALE PART 20 IN WHICH ARE RESPECTIVELY MOUNTED MALES 26 AND FEMALE CONTACTS 27 INTENDED TO BE INTERCONNECTED. A COUPLING RING 24, METALLIC, CYLINDRICAL AND HOLLOW, IS ARRANGED AROUND THE MALE PART AND IT HAS A THREAD 40 INTENDED TO BE SCREWED ON A THREAD 39 OF THE OUTER SURFACE OF THE MALE PART. ELASTIC SEALS 30, 51 ENSURE THE TIGHTNESS OF THE CONTACT SURFACES. THE CONNECTOR ACCORDING TO THE INVENTION IS INTENDED IN PARTICULAR FOR INTERCONNECTING ELECTRIC CABLES.

Description

The present invention relates generally to a connector

electric, and concerns more

  particularly an electrical connector of the type com

  carrying a matte part and a female part which can be plugged in an unobtrusive manner to interconnect

two electric cables.

  An electrical connector, exceptionally

  well accepted for both electronic and

  household, space and military, is that described

  in U.S. Patent No. 4,066,315.

  As is stated in this patent, the electrical cable connector includes padded portions which are lockably engaged by the rotation of a coupling ring, the latter including a nut.

  interior which, depending on its direction of rotation,

  bring the parts of the connector closer or apart.

  Devices of an elastic type located between the coupling box and a part of the connector

  used to compensate for the cumulative tolerances of

  components of the connector Hais these devices

  of elastic type are sensitive and react

  to the forces applied to the cables

  tooth to separate the connector In other words, a load

  sufficient cable to distort the elastic devices

  ticks also entails the separation of parts of the

  connector at their contact surface, which it

  is a new unwanted contact, or a re-

  duction or m Smeune total loss of compression at the joint

of contact.

  The electrical connector described hereinafter

  carries a male part and a female part, intercon-

  nected respectively to two groups of drivers

  of targets by female and male contacts

  of the male part and the female part, the contact pins are removably received in the female contacts, establishing the interconnection

  electrical power between groups of wires.

J

  rz male part has a coupling ring-

  A hollow outer bore which is rotatable relative to the body of the minor portion, and which includes a tapping cooperating with a thread on the outer surface and the part body of the male part.

  male and female parts are assembled, rotation-

  the mating baffle brings one or two apart

  on the other hand, the male part and the female part

  direction of rotation, to respectively connect

  and deconitect the parts of the connector.

  Deans a first embodiment of the invention

  Both the male part and the female part both have elastic contact joints which have

  sufficient thickness and flexibility to compensate

  In this way, the need for a coupling nut separate from the patent, is satisfactorily met by the accumulated tolerances of the assembled parts of the connector.

mentioned above is eliminated.

  In another aspect, the coupling ring

  and the threading of the male part body can be made

  in order to engage with gambling, bringing a

  additional compensation for tolerances.

  Other features and advantages of the

  will be better understood when reading the description of

  The following is an example of embodiment and with reference to the accompanying drawings, in which: FIG. 1 is a longitudinal sectional view of a prior art guide, FIG. 2 is a side view of FIG. a connector according to the invention, in the unlocked state, Figure 3 is a longitudinal section of the

  electrical connector of Figure 2, partially

plug,

  Figure 4 is a longitudinal section similar to

  to that of F'ig 3, with entire parts

put on -

  Sutr figures, and in particular in Figure 1, an electrical connector currently available from the

  general type to which the invention applies is

  10 and it comprises a portion m, 11 and a female portion 12 which are plugged to interconnect respective groups of cable conductors 13 and 14 The mile portion it comprises a coupling ring 15 eniarie decoquille - cylindrical that Li can rotate freely around the part * mile A nut 16 is located inside

  the coupling ring 15 and is held there elastically

  tically by an elastic device 17 which allows

  to the nut to move along the longitudinal axis

  connector while maintaining it at the same time attached to the coupling ring The nut comprises

  a tapping 18 which cooperates with a threading complete

  element 19 at the peripheral surface of the male part so that when the outer end of the

  the coupling ring is received on the female part

  the, the rotation of this ring approximates or removes the male part of the female part according to the meaning

of rotation.

  The elastic device 17, which takes

  The shape of a "corrugated" washer allows a movement or an elastic positioning of the nut 16 (and thus of the coupling ring) along the axis of the connector used to compensate for the tolerances of the parts of the connector. In the prior art, the contact system (ie, female and female contacts) is referred to as "backward release" in that the contacts are introduced and extracted from behind (i.e. the ends In these connectors, a hard dielectric female contact surface is used and this requires the two-piece coupling to accept the manufacturing tolerances and to ensure a smooth connection.

25242 1 1

  joint co; both at the contact surface.

  Figure 2 shows that the electrical connector

  that the invention includes, in its

  jeurs, a female part 20 and a male part 21 which are connected together during the connetleur connection mode to interconnect son goupes

  22 and 23 After the uiale part and the

  women were initially partially

  A hollow cylindrical coupling ring 24 is rotated, and in a manner to be described, it brings the mrte part against and on the female part to firmly insert the contacts r, into the

  contacts several points 25 of generic form

  rectal area are arranged circumferentially

  Around the outside of the female shell for

  in a corresponding arrangement of mortises (not shown) located inside the coupling ring 24 and the male part 21 to ensure correct positioning and mutual positioning of the connector contacts, with respect to Other 'As described so far, the present connector

  is carried out and operates practically from the

  the connector mentioned in the above-mentioned patent

  you. Referring particularly to Figure 3, the latter is a section of the female part and the

  the nitrate part in an initial plug-in phase, the

  However, the female contacts 20 are not received in the female portion 27, but the mating contacts 26 are not received in the female contacts 27 to establish the electrical contact for the wires. It appears that the female portion 20 generally consists of a hollow cylindrical metal portion with a bore passing therethrough. An embedded assembly 28 is located in the bore of the female portion and is provided with an insulating washer 29, a gasket 30, and a gasket. this recessed 31 arranged in the center, all these

  elements that are integral with each other.

  the insulating washer 29 is a piece cv-

  lindrique having several openings 32 which cross parallel to the axis of the cylinder, these openings being intended in use to receive the individual son 22 of the cable The insulating washer

  is made of an elastic material relatively

for example rubber.

  The recessed part 31 has a general shape

  cylindrical and is made of a plastic material

  that relatively hard, rigid and highly insulating.

  Several openings are provided in the room

  aligned with the openings 32 of the washer iso-

  these apertures having a cross section 1 such that they retain the female contacts 27 which

  A circumferential flange 34 is placed

  against a shoulder of the inner wall of the

  part fe ielle to position the recessed part.

  The interface seal 30 has a cylindrical shape

  that and it is sized to fit exactly in the bore of the female part Several openings pass through the seal in alignment with the openings

  of the recessed part 31 and also those of the ron-

  Preferably, the seal 30 is made

  in a relatively flexible and elastic insulating material

that, for example, in Qutchouc.

  At assembly, the insulating washer 29, the insert 31 and the seal 30 are appropriately disposed in the form of a unit, the openings

  of each piece being aligned, and the whole being

  in the female part by a snap ring

  335 l, the female contacts 27 are introduced into the openings 32 of the insulating washer, into the openings of the insert and finally into the openings of the seal to extend outside the outer face 36 of this seal The female contacts can be easily removed by pushing them towards

  the outside to the face 36 in utiti sa, t u pusher.

  The female part also has a thread 37 on its outer surface, for the usual connection with a cable shield for example. In addition, a flange or flange 38 is provided.

  for mounting on a wall, if desired.

  The metal part 21 is a metal shell

  than hollow cylindrical, with a thread 39 relative-

  wide fored on an outer edge of the end

  turned towards the female part during insertion.

  The coupling ring 24 is a metal shell

  than cylindrical of larger dimension arranged on

  the mile portion and which has a tapping 40, cor-

  corresponding to the thread 39 of the male part.

  A flange 41 at the outer end of the

  coupling ring 24 extends radially towards the

  within a limited distance to releasably engage the female portion in a manner that will be

  described at the opposite end of the coupling ring

  a snap ring 42 is disposed in an inner groove 43 to limit movement.

  towards the rear of the male part by the ring of

  An engagement spring 44 is an audible and attachable means for indicating the condition

  full display as described in more detail.

  tail in the aforementioned patent In addition, the spring of

  latching prevents the coupling ring from being

unintentionally unscrewed.

  The inside diameter of the bore of the male portion, the end bearing the thread 39 is te L that allows adjustment on the open end

  of the female part 20 An inner groove con-

  holds an O-ring 45 to hermetically seal the parts of the oonnector against the ingress of dust, dirt and moisture An annular spring 46 is disposed just inside the O-ring 45 in a suitable groove and has the main function of the common electrical grounding device for the male part and the part fei L: te As in the case of the fenilelle part, a conventional threadare 47 is provided on the outer end of the male part for engagement by

  3 example with an incoming cable shield.

  An insulating washer 48 which is flexible and elastic, similar to the insulating washer 29 of

  the female part is provided for the part Egale-

  a recessed piece 49 of rigid and insulating plastic rests against the insulating washer 48 and its function and its realization are similar.

  to those of the recessed part 31 of the female part.

  Apertures aligned in the insulating washer of the male part and its recessed part receive the son 23 of the cable In addition, a rim 50 on the embedded part 49 stappuie against an intermingling inside the shell

  m.the to position the recessed part.

  A flexible and resilient interface seal 51 is attached to the exposed face of the embedded part 49 and has a plurality of apertures 52 aligned with the

  openings of the recessed and through-room complete-

  These openings 52 are dimensioned each

  so as to enclose a male pin 26 which is

  mounted in a recessed and stationary opening

  In addition, the section of the openings 52 is sufficient to allow the reception of a female contact 27, for insertion with

a male contact.

  The insulating washer 48, the embedded part 49 and the seal 51 are integrally assembled and are fixedly arranged in the mitred part shell,

  by means of an engagement ring 53.

  In use, the female part and the male part are initially equipped with male and female contacts arranged in the connector parts as shown in Fig. 3. At a first plug-in phase, the female part is slid into the open end of the socket. male and the coupling ring, a

  certain axial orientation of the parts being necessary

  re to align the tenons 25 (Pig 2) of the female part with the mortises (not shown) of the rim 41 of the coupling ring and the shell of

  matle part With the rim 41 located beyond

  the appropriate rotation of the coupling ring

  draws the male and female parts towards each

  the other, so that the female contacts 27 penetrate

  in the apertures 52 of the recessed part j 1 (FIG. 3) of the male part The continuation of the rotation of the coupling ring in the second direction leads to

  the male contacts in the female contacts and

  complete registration, the faces of the joints are supported by one

  against the other (Fig 4) The rotation of the bushing

  coupling in the opposite direction entails the

  the male part and the female part.

  In the connector described above, the

  manufacturing losses are offset by the elasticity

  Thus, thanks to this tolerance compensation, it is possible to replace the coupling ring in two pieces (ie say a coupling shell and a nut

  separated) from the prior art by a ring of acces-

  couplemrient (21) and a single piece described above -

  This results in substantial material savings

  and manpower in manufacturing, as well as to the

3 months.

  It is now necessary to refer to the

  Figure 4 for the rest of the description of another

  aspect of the invention The only difference in realizing

  relative to the connector shown in FIG.

  3 is in the coupling ring and the threads

  In other words, and according to this aspect of the invention, two threads are formed so that a substantial movement or "play" can be made between the coupling ring and the shell. male in a direction parallel to the longitudinal axis of the connector In this way, another cc thought is obtained for the toler-

  accumulated manufacturing costs of the parts of the

  In addition, plugging and unplugging are

  identical to those of the embodiment of FIG.

  In the embodiments that have been described above, the female contacts are mounted

  in the female part and the contacts m are

  In the male part, however, it remains within the scope of the invention to reverse this arrangement. In addition, although it is considered advantageous to completely enclose each metal contact in a joint cavity, particularly for relatively small dimensions, it can also be advantageous if the female contacts are embedded or enclosed in an interface joint and the male contacts

be exposed.

  Of course, various modifications can

  to be provided by the man of art to the mode of

  described and illustrated by way of example

  limiting without departing from the scope of the invention.

Claims (5)

  1 Electrical connector comprising a part   male connector (21) and a female part (20) which can be removably connected to interconnect   electrically contacts (26) and contacts   female connectors (27) supported respectively by the connector parts, connector characterized in that   that the metal part (21) has a device for   torque (24) metal, hollow cylindrical arranged   around a male part shell, the said   O positive coupling with tapping (40)   formed on the inner wall surface and corres-   laying on a thread (39) formed on the outer surface   the upper part of the male part shell, a first   positive insulator (31) supported by the female part   (20), wherein first contacts (27) are   said first device having a flexible and resilient interface seal (30) facing the   male part during insertion, and a second one   insulating device (49) supported by the male part shell (21) and wherein the other contacts (26) are mounted, said second device having a flexible and resilient interface seal (51) facing the female part and pressing against said interface joint of the first insulating device during   plugging in the parts of the connector.   2 electrical connector according to the claim   1, characterized in that the female contacts (27) extend towards the outside of the interface joint   (30) of the insulating device, wherein said   tacts are mounted, the contacts m, als (26) being   closed in the seal (51) of the insulating device to   inside which said Ales contacts are mounted.   3 electrical connector according to the claim   1, characterized in that said first (31) and second (49) insulating devices comprise 1 1 2   each one a rigid insulating part, a seal of inter-   face (1), 51) flexible and elastic and a washer   insulation (29, 483) flexible and elastic, all these   being assembled together and having a plurality of openings passing through them to receive contacts.   4 electrical connector according to claim   cation 1, characterized in that the threading and the   raking (39, 40) of the male part (21) and the arrangement   coupling device (24) are formed so as to screw yourself with game