FR2525032A1 - ELECTRICAL CONNECTOR DEVICE WITH REMOVABLE MODULAR CAPACITIVE FILTER HOUSING - Google Patents

Abstract

IN A CONNECTOR, A PART, MALE FOR EXAMPLE, INTERNALLY CONTAINS CONTACT ELEMENTS 11 IN THE OTHER END IS MADE IN A FEMALE SOCKET. AT THE REAR OF THE CONNECTOR IS PROVIDED AN ADDITIONAL RING 20, WHICH IS BETWEEN TWO WASHERS 231 AND 232, AT LEAST ONE CAPACITIVE PAVEMENT 22, PERFORATED ACCORDING TO THE GEOMETRY OF THE CONTACT ELEMENTS. IN EACH PERFORATION OF THE PAVE 22 A PIN 24 IS HOUSED, ONE OF THE ENDS 240 OF WHICH ENGAGES IN THE FEMALE SOCKET OF THE CONTACT ELEMENT OF THE CONNECTOR, WHILE THE OTHER 242 DEFINES A PIN TO RECEIVE A CONDUCTIVE WIRE OF THE BEAM TO BE CONNECTED. THE ASSEMBLY IS SET IN PLACE AXIALLY, AND GRADUALLY, BY ROTATION OF A NUT 30 WHICH COMES INTO TAKING ON THE THREAD 103 LOCATED AT THE REAR OF THE CONNECTOR, AND IS FIXED AXIALLY BUT FREE IN ROTATION WITH RESPECT TO THE RING 20.

Description

-1-

  The invention relates to electrical connectors.

  especially the electrical connectors for

high frequencies.

  We know that it is advantageous to provide capacitive filtering between the contact elements of a connector and the mass, in one of the two parts, male and female, of the connector. The Applicant has already proposed a connector equipped with a such capacitive filtering, produced in the form of multi-layer ceramic dielectric capacitors, sintered at high temperature (French patent application Né 78 10 242, published under

FR 2 422 268).

  The proposed arrangement has proven to be of-

  health However, additional problems have arisen

  when it comes to mass production of containers

  nectors with a high number of contact elements Indeed, the basic problem is then to produce an electromechanically reliable connector at the level of the connection to each pair of male and female contacts. On this problem, which is soluble in itself, is grafted that

  of the realization of multi-ceramic capacitors

  layers that are not only in themselves satisfying

  health (problem also soluble on its own), but

  also able to withstand electro-

  mechanical encountered as well when mounting on the aue connector, subsequently, in service (when connecting the conductive wires to the connector

  in particular) In other words, difficulties remain

  rent to make compatibility problems compatible

  nector and those linked to multi-layer ceramic dielectric capacitors In addition, the same connector will often have to receive different capacitive filtering, depending on the applications Finally, one of the common techniques for connecting bundles of conductive wires to a connector is winding ("wrapping") Man -2-

  of art knows that this technique generates constraints

your significant mechanics.

  The present invention provides a solution to this problem of industrial production of connectors with capacitive filtering easily

  adaptable, to satisfactory technical and economic conditions

  doing. The proposed electrical connector device is of the type comprising a first part, male or female, consisting of a metal body of generally cylindrical shape, which houses a contact-carrying insulating block radially, with individual contact elements firmly held inside. of the block

  insulating, these contact elements having an

  mite, male or female, on the side where the second part of the connector comes, female or male respectively,

  while there are provided means defining con-

  multi-layer ceramic dielectric densifiers between at least some of the contacts, and a ground connection comprising the connector body, According to the invention, the other end of the contact elements is arranged in a female socket;

  opposite the second part of the

  nector compared to the first, an additional ring

  conductive nelle forming a housing housing a

  capacitive with multi-layer ceramic dielectric, with axial metallized perforations according to the same geometry as the contact elements; and connecting pins pass through these perforations, to which

  they are welded to engage on the one hand in the-

  say female sockets, and define on the other hand connection pins for the conducting wires arriving

  on the first part of the connector.

  Very advantageously, a support washer is provided between the pavecapacitive and the block -3-

  insulating; and the pins each have a shoulder-

  exactly engaging in a puncture res-

  pective of said support washer, which allows precise positioning of the pins without excessive stress on the capacitive pad. In an interesting embodiment, the female sockets consist of an axial cutting of the contact elements defining at least one clamp

  axial lyre-shaped, on which is externally set

  laughing a cylindrical collar open at its free end with a lip capable of guiding the introduction of the

  pin in the lyre-shaped clip.

  Preferably, there is provided between the ring ad-

  and the capacitive pad a conductive washer

  trice forming a radial spring, curved with concavity towards the outside, and ensuring the mass connection between the

  peripheral metallization of the paver and the conductive ring

  as well as the connector body.

  In an advantageous embodiment, the connecting pins are of square cross section, and there is provided, on the other side of the capacitive block, another washer pierced in the format of the cross section of the

  pins, which avoids excessive mechanical stress-

  sive of the paver during the installation of the conductive wires

  teurs, in particular by winding.

  According to another embodiment of the invention

  tion, the additional ring accommodates adjacent two capacitive blocks, the homologous metallized perforations of which are crossed by the same pins with interposition between the two blocks of means forming inductance on at least some of the pins, which

  allows to define filters in s.

  Preferably, the additional ring comprises on the side of the pins a wavy radial washer forming an axial spring, and urging the capacitive block (s) at -4

  stop on the contact carrier insulating block.

  Also advantageously, the ring is mounted axially linked and free to rotate on a threaded nut capable of meshing on a homologous thread

from the back of the connector.

  Other features and benefits of

  the invention will appear on reading the description

  detailed description which follows, as well as in the appended drawings, which illustrate two embodiments of the present invention, respectively with a simple capacitive filter and with an s filter. In the drawings: FIG. 1 illustrates, in the form of a half view -cut, an embodiment of the invention with simple capacitive filtering; Figure 2 is a partial view illustrating in more detail a contact element such as 11 of Figure 1;

  Figure 3 is a schematic sectional view illus-

  trant one embodiment of the multi-layer ceramic dielectric capacitive block of FIG. 1; and Figure 4 is a half-section view of the second mode

  embodiment of the invention with filtering in a.

  In FIG. 1, a male connector part is illustrated, the female part, not shown, being well known to those skilled in the art. In the preferred embodiment of the invention which is illustrated below, this male part connector is formed as a base, that is to say as the part of the connector which is intended to be fixed on

  a frame, generally designated by 1.

  The male part of the connector consists of a metal body of generally cylindrical shape, designated by 10 This body houses radially an insulating contact carrier block, designated by 12, with -5-

  contact elements, designated by 11, which are closed

  ment maintained inside the insulating block, in a known manner These contact elements have an end which here male, but could alternatively be female, on the side where the second part of the

  connector, which is then female or male respectively.

  FIG. 2 shows one of these male contact elements in more detail. The contact part proper is distinguished at 110, and this part is

  followed by a shoulder 111, then a general part

  Lement cylindrical 112, which is inserted in the insulating block The shoulder 111 comes to bear on the block 12, in order to achieve the firm maintenance of the contacts already mentioned. Alternatively, are provided on the cylindrical part 112 of the claw-forming members, suitable for

  completely immobilize the contact element inside

insulation block 12.

  The other end of the contact elements is arranged in a female socket. FIG. 2 illustrates in more detail a preferred embodiment of this arrangement. It can be seen that the central part of the contact element 11 is perforated internally, while being cut all around axially. , so as to define at least one axial lyre-shaped clamp We see in FIG. 2 at 113 and 114 two elements of such a lyre-shaped clamp Another clamp is here produced in a plane perpendicular to the figure, and one of these elements can be seen 115 Around this part which forms the lyre clip, there is externally crimped a cylindrical collar 116, open at its free end, with a lip 117 oriented radially inwards, so as to be able to guide the introduction of a pin into the lyre-shaped clamp At 118, the collar 116 is crimped onto the internal part which forms the clamp This embodiment is advantageous in -6- in that it allows excellent contact , while leaving a certain freedom of radial play in the spindle which will come to engage in the lyre. It will also be noted that the guiding of the spindle is indeed achieved by the lips 117, which can advantageously be bevelled towards the orifice. opening of the lyre, to further facilitate

the introduction of the pins.

  On the male connector part itself, opposite its second female part, is mounted an additional conductive ring, generally designated by 20, and forming housing housing for at least

  a capacitive block, generally designated by 22, and pos-

  attractive multi-layer ceramic dielectric structure.

  As shown in Figure 3, this block 22 pos-

  sends axial metallized perforations, such as 222, which are produced according to the same geometry as those of the contact elements in the connector. FIG. 3 also shows that these axial perforations such as 222 are connected to first reinforcements.

  of capacitor 221 Second armatures of condenser

  sator such as 223 are connected to a metallization

  device 224 of the capacitor pad 22 A super

  alternating position of such frames provides the

  capacitive structure with multi-ceramic dielectric

  well known layers Details on the realization of such a structure can be obtained in the

  French patent application already cited.

  Returning now to FIG. 1, it can be seen that connecting pins, generally designated by 24, pass through the axial metallized perforations of the

  capacitive pad 22, while being welded to these perfo-

  These connecting pins have an

  mite 240 which will come to engage in the female sockets already mentioned, with lyre-shaped pliers, such as 113 ′ and 114 At the other end, the pins in question define connection pins for the conducting wires which will arrive in a bundle on the male part of the connector Very advantageously, these pins

  are of square cross section, to allow

  be the fixing of wires by wrapping. A support washer 231 is provided between the capacitive block 22 and the insulating block 12 This support washer is also perforated according to the geometry of the contact elements And the pins such as 24 each have a engaging shoulder 241 exactly in a respective perforation of the support washer 231 This arrangement makes it possible to weld the capacitive pad on all of the pins 24 beforehand, the shoulder 241 coming into contact with one of the faces of the capacitive pad. then in place there washer 231, which will ensure a

  excellent radial retention of the pins in position.

  On the other side of the capacitive block 22, another washer 232 is put in place, which is also perforated to the same geometry, but by perforations of square section, which make it possible to maintain against rotation the aforementioned square section connecting pins. It is therefore this washer 232

  which will receive most of the rotational efforts

  tion encountered when placing conductive wires by winding on the free end 242

spikes.

  The additional ring 20 which forms a housing

  housing for the capacitive pad has inner-

  a flat peripheral recess, in which is housed a conducting washer 250 forming a spring

  radial, which presses on the peripheral metallization

  rique 224 of the capacitive pad The washer 250 is preferably made curved with its concavity facing outwards. The connection of -8 - mass between the peripheral metallization 224 of the pad is thus produced.

  and the conductive ring 20, as well as the connector body

  nector as a whole Most of the time, as described in the French patent application already cited, one of the contact elements of the connector

  will also be connected to ground The perforation cor-

  corresponding in the capacitive block will then be directly connected to the frames 223, without having

  of own reinforcements such as 221 (Figure 3).

  Finally, on the side of the pins 242, the ring ad-

  ditionnelle 20 has a radial shoulder facing inward 201, which is used to maintain a radial washer forming an axial spring This wavy washer, designated by 260, comes to bias the capacitive pad 22 in abutment on

  the contact holder insulating block If necessary, the

  residual size on the rear face of the ring 20 is

  closed by a suitable addition of a sealing resin.

  In practice, the whole set contained within

  of the additional ring 20 is mounted separately, at the level of the manufacturer of the dielectric capacitive pad

  multi-layer, this set comprising the ring 20 itself

  same, and all that is included between the internal support washer 231, and the spring washer 260 with

any sealing resin.

  The rest of the connector is manufactured in a traditional way Instead of the contact elements 11 which carry on the side of the rear of the connector a male part, contact elements with rear part are placed

  female, of the type shown in Figure 2.

  This electromechanical part of the connector is therefore

manufactured in a conventional manner.

  It will also be observed that on the ring 20 is mounted a threaded nut 30 The nut is mounted linked axially to the ring, by a peripheral ring 31 -9- forming a shoulder, while remaining free in rotation relative to said ring A at its other end, the nut 30 has a threaded portion 32 capable of meshing

  on the homologous thread 103 on the rear of the connector.

  Those skilled in the art will now understand that

  the front parts 240 of the individual pins exceeded

  health of the additional ring 20 will engage

  gressively inside the female sockets defined at the rear of the contact elements 11, progressively

  that the nut 30 is screwed onto the thread 103 This dis-

  position has the important advantage that putting

  place of the capacitive part on the connector made

  kills practically without mechanical constraint In addition, any capacity value can be set up at will

  without having to modify the structure of the connector itself

  even, other than by exchange-of these contact elements Finally and above all, when thereafter it is necessary to fix wires by winding or "wrapping", the forces consecutive to this fixing are taken up by the washer

  rear 232, and therefore will not come to risk

  bend the connection between the sockets 24 and the block

  capacitive nor the contact element 11.

  Figure 4 illustrates a second embodiment.

  sation of the invention, in which a capacitive ir filtering is provided for the connector pins, instead of

  simple capacitive filtering of figure 1.

  Regarding the connector itself,

  the structure can be the same as that of FIG. 1.

  It will simply be observed that FIG. 4 shows a flange 104 with a seal 105 on one side of the fixing wall 1, while on the other is provided a nut 102 engaging the thread 101 of the connector This details the positioning of the base on the frame 1, and may also be applicable to the

figure 1.

  i 525032 -10 The rest of the changes appearing on

  FIG. 4 concerns the interior of the addition ring

  nelle 20 We find as before a first

  washer 231, followed by capacitive pad 22, of which the metal-

  external connection is in contact via the domed spring 250 with the conductive ring 20 The capacitive block 22 is here followed to the right of a ferrite element 270, associated with a holding member 233, which defines around the pin 243 an inductor, of a

  manner known to those skilled in the art.

  This set is followed by a second pavé-capa-

  citive 28, generally arranged as the first, but

  with a possibly different capacity value.

  Again, internal metallizations to the perforations are welded to the pins 242, while the peripheral metallization of the block 28 is connected by a washer 255

  similar to washer 250 to the conductive outer ring

this 20.

  Finally, we find the washer 232, provided with

  square cross-section perforations, to accommodate exact-

  ment the square cross section of the pins 242 Finally, the

  spring 260 ensures the axial pressure of the assembly

  ble, so that the pins 240 fit well inside

  female sockets of the contact elements.

  Of course, the present invention is not limited to the embodiments described, but extends to any variant inscribed within the framework of the

claims below.

-11-

Claims (1)

CLAIMS 1 Electrical connector device, of the type comprising a first part, male or female, consisting of a metallic body (10) of generally cylindrical shape, which accommodates radially an insulating contact carrier block (12), with individual contact elements (11) firmly held inside the insulating block (12), these contact elements (11) having one end (110), male or female, on the side where the second part of the connector comes, female or male respectively, while means (22) are provided defining multilayer ceramic dielectric capacitors between at least some of the contacts, and a ground connection comprising the body (10) of the connector, characterized in that the other end of the contact elements (113, 117) is arranged in a female socket, by the fact that there is provided, opposite the second part of the connector relative to the first, an additional conductive ring ( 20), forming a housing housing a capacitive block (22) with multi-layer ceramic dielectric, with axial metallized perforations (222) according to the same geometry as the contact elements (11), and by the fact that connecting pins (24) pass in these perforations, to which they are welded to engage on the one hand in said female sockets, and on the other hand define connection pins (242) for the conducting wires arriving on the first part of the connector. 2 Device according to claim 1, characterized in that there is provided a support washer (231) between the capacitive pad (22) and the insulating block (12), and that the pins (24) each have a shoulder (241) engaging exactly in a respective perforation of said support washer (231), which allows precise positioning of the pins without excessive stress on the capacitive pad. 3 Device according to one of claims 1 and 2, characterized in that the female sockets consist of an axial cutting of the contact elements defining at least one axial clamp in the form of a lyre (113, 114, 115), on which is crimped (118) externally a cylindrical collar (116) open at its free end with a lip (117) capable of guiding the introduction of the pin into the lyre-shaped clamp (113, 114,). 4 Device according to one of claims 1 to 3, characterized in that there is provided between the additional ring (20) and the capacitive pad (22) a conductive washer (250) forming a radial spring, curved with concavity towards outside, and ensuring the ground connection between the peripheral metallization (224) of the block and the conductive ring (20) as well as the connector body (10). 5 Device according to one of claims 1 to 4, characterized in that the connecting pins (242) are of square cross section, and that there is provided, on the other side of the capacitive block (22) a another washer (232) pierced in the format of the straight section of the pins, which avoids excessive mechanical stress on the block during the installation of the conducting wires, in particular by winding. 6 Device according to one of claims 1 to 5, characterized in that the additional ring houses adjacent two capacitive blocks (22; 28) whose homologous metallized perforations are traversed by the same pins (24) with interposition between the two blocks of means forming inductance (270, 233) on at least some of the pins, which makes it possible to define filters in a. -13- 7 Device according to one of claims 1 to 6, characterized in that the additional ring comprises on the side of the pins a radial washer (260) forming an axial spring, and biasing the capacitive block (s) in abutment on the contact carrier insulating block. 8 Device according to one of claims   1 to 7, characterized in that the ring (20) is mounted axially linked and free to rotate on a threaded nut (30) capable of meshing on a homologous thread from the back of the connector.