FR2787936A1 - CONNECTION DEVICE FOR COAXIAL CABLE - Google Patents

Abstract

The invention concerns a connection device characterised in that it comprises at least a cell (18) for directly engaging the previously partially stripped end of a coaxial cable (10) to be connected, with, interposed laterally relatively to said cell (18), a contact element (19), extending parallel to the cell (18) axis (A1), and whereon the coaxial cable (10) is to be connected between its outer sheath (13) and its shielding (12), and a cam (20) mounted rotating about an axis of rotation (A2) parallel to the cell (18) axis (A1), and which, transversely relatively thereto, has at least a clamping rib (21) whereof the distance of the ridge relatively to its axis of rotation (A2) varies about the latter. The invention is applicable in particular to coaxial cables used for distributing high frequency signals, and particularly, for distributing television signals.

Description

"Connection device for coaxial cable" The present invention

  generally relates to connection devices of the type used for the connection of a

any coaxial cable.

  It therefore relates equally to those of these connection devices which form by themselves an individual entity, then presenting a separate housing, as is the case when it is simply a question of connecting a coaxial cable to another coaxial cable. , than those which form an integral part of any receiver, their casing then being most often in one piece with that of this receiver, as can be the case when it is

  to provide service to such a receiver.

  More precisely, when these connection devices forming by themselves an individual entity, the present invention relates to both the case where this individual entity constitutes a male base and the case where it

  constitutes a female plug to be plugged into such a base.

  The present invention relates more particularly, again, but not necessarily exclusively, to the case where the coaxial cable to be connected is intended for the distribution of high frequency signals, and, for example that

of television signals.

  In all cases, the connection device used must assume

several functions.

  It must in fact, on the one hand, allow suitable maintenance of the coaxial cable, and, on the other hand, ensure, in a distinct manner, a first electrical contact with the metallic braid usually constituting the internal shielding of such a coaxial cable. , and a second electrical contact with his soul

conductive unit.

  Most often, to date, the connection devices used for this purpose comprise, on the one hand, a tip, which is to attach, and to tighten, on the coaxial cable, after a more or less complex stripping of the end of it, and, on the other hand, a cell, which belongs to the receiver to be served, and in which the coaxial cable must be engaged by the end piece of which it has been

previously equipped.

  However, in addition to the cost of the assembly and the relative complexity of the operations required, the maintenance of the coaxial cable turns out to be uncertain in practice. In other connection devices also already known, there is implemented, on the one hand, a clamping element, for example a jumper, which, while firmly securing the coaxial cable to the receiver to be served, ensures a electrical contact with its metallic braid, and, on the other hand, a contact terminal, suitable for ensuring electrical contact with its

central soul.

  If, with such connection devices, satisfactory maintenance of the coaxial cable is effectively obtained, these connection devices also have, as before, the disadvantage of requiring

  relatively complex and time-consuming operations for their implementation.

  In particular, they also require significant stripping of the

  coaxial cable, for access to the metal braid forming the shielding thereof.

  In European patent application N 0 671 787, this stripping is avoided, the corresponding connection device comprising a contact element on which the cable concerned must be connected between its outer sheath and its shielding, by a direct engagement on this element of contact. But this European patent application No. 0 671 787 does not concern the connection of a coaxial cable, but that of a simple shielded cable, and there

  no other contact terminal is therefore provided.

  In addition, still relatively complex operations are to

  face, to ensure the tightening of the assembly on the cable.

  In the Spanish utility model filed under number 92 01739 and published

  under the number 1 021 449, a direct cable connection is also proposed.

  But, if this cable is then indeed a coaxial cable, this Spanish utility model No 92 01739 only relates to the contact terminal intended to ensure electrical contact with the central core of this coaxial cable, without

relate to the shielding thereof.

  The subject of the present invention is a connection device for coaxial cable, the implementation of which is easy and quick, and which ensures in simple and energetic manner a suitable maintenance of this coaxial cable. This connection device is generally characterized in that it comprises at least one cell suitable for direct engagement of the end, previously partly stripped, of the coaxial cable to be connected, with, on the one hand, intervening laterally with respect to this cell, a contact element, which is elongated parallel to the axis of the cell, and on which the coaxial cable must be connected between its outer sheath and its shield, and a cam, which is mounted rotatable about an axis of rotation parallel to the axis of the cell, and which, transversely relative to the latter, has at least one clamping rib whose crest distance from its axis of rotation varies around of the latter, and, on the other hand, acting axially with respect to the cell, a contact terminal with which the central core of the coaxial cable

is intended to come into engagement.

  With such a connection device, only stripping of the central core of the coaxial cable is necessary, without stripping, which is always more difficult to

provide shielding thereof.

  It suffices, then, on the one hand, to engage in the cell the coaxial cable whose central core has thus been previously stripped, which leads this coaxial cable to be plugged into the contact element provided for this effect, and, on the other hand, to rotate on itself, for example a quarter turn, the cam

  associated, using, for example, a simple screwdriver.

  Indeed, by the clamping rib which it comprises, this cam then comes to bear against the outer insulating sheath of the coaxial cable, by pinching the latter between it and the contact element, which is sufficient to maintain

suitable coaxial cable.

  The characteristics and advantages of the invention will moreover emerge from

  the following description, by way of example, with reference to the drawings

  attached diagrams in which: FIG. 1 is a perspective view of a connection device according to the invention, seen from above; Figure 2 is another perspective view, seen from below Figure 3 is an elevational view, along arrow III of Figure 1; Figure 4 is an exploded perspective view; Figure 5 is, on a larger scale, a top view of the boot body of this connection device, according to arrow V of Figure 4; Figures 6, 7, and 8 are cross-sectional views of this housing body, along, each respectively, the lines VI-VI, VII-VII and VIII-VIII of Figure 5; 1 5 Figure 9 is a sectional plan view of the housing body, along the line IX-IX of Figure 6; Figure 10 is a top view of an internal block which corollarily comprises the connection device according to the invention; Figures 11 and 12 are cross-sectional views of this internal block, along, each respectively, the lines XI-XI and XII-XII of the figure; Figure 13 is a cross-sectional view of another internal block which also includes the connection device according to the invention, along the line XIII-XIII of Figure 4; Figure 14 is a longitudinal sectional view of the cover of this connection device, along the line XIV XIV of Figure 4; Figure 15 is a perspective view of the cam used in the connection device according to the invention; Figure 16 is a front view of this cam, along arrow XVI of Figure 15; Figure 17 is a top view, along arrow XVII of Figure Figure 18 is, with a local cutaway, a perspective view of one of the contact terminals present in the connection device according to the invention; Figures 19 and 20 are two sectional views which, derived one and the other from that of Figure 9, each illustrate two successive phases of implementation of the connection device according to the invention; Figure 21 is an exploded perspective view which, similar to that of Figure 4, relates to another embodiment; Figure 22 is, on a larger scale, a perspective view of the housing body used in this other embodiment, seen from above; Figure 23 is a perspective view of this housing body, seen from below; Figure 24 is a sectional plan view similar to that of Figure 9, along the line XXIV-XXIV of Figure 22; Figures 25 and 26 are cross-sectional views along the first, the broken line XXV-XXV of Figure 23, and the second, the line XXVI-XXVI of this Figure 23; Figure 27 is a perspective view of the internal block that includes this other embodiment, seen from above; Figure 28 is another perspective view of this internal block, seen from below; FIG. 29 is a perspective view of the cam used in this other embodiment, seen from the front; Figure 30 is, on a larger scale, a front view of this cam, along arrow XXX of Figure 29; Figure 31 is another perspective view of this cam, viewed from the rear; FIG. 32 is, on a different scale, a perspective view of one of the contact terminals used in this other embodiment; Figure 33 is a perspective view which, similar to that of Figure

  29, relates to another embodiment of the cam used.

  As illustrated in these figures, and as is better visible in Figures 19 and 20, it is, overall, to ensure the connection of at least

coaxial cable 10.

  By coaxial cable 10 is meant here, in the usual way, a cable comprising, coaxially, on the one hand, a central conductive core 11 which is in practice formed by a simple metal wire, and, on the other hand part, a shield 12, which, most often, is constituted by a metallic braid, with, between this central core 11 and this shield 12, on the one hand, an inner sheath, which is made of insulating material, and which does not is not visible in the figures, and, on the other hand, around the shield 12, an outer sheath 13, which is it

also in insulating material.

  In the embodiments shown in the figures, the connection device 15 used to ensure the connection of such a coaxial cable 10 forms, by itself, for example, an individual entity, at the

1 5 way of a base.

  It therefore comprises a housing 16 which is specific to it.

  In the embodiments shown, this housing 16 is formed by a housing body 1 6A and a cover 1 6B, which, duly attached to the body of

box 1 6A, close it.

  For example, the housing body 1 6A has, from place to place, at its periphery, lugs 17, FIGS. 4 to 8, or wells 17 ′, FIGS. 21 to 26, thanks to which the cover 1 6B is attached to it as a corollary,

possibly glued or welded.

  The corresponding provisions being well known in themselves, and not directly pertaining to the present invention, they will not be

described in more detail here.

  Only the elements of the invention will be described in what follows

  necessary to understand it.

  It will suffice, in the immediate term, on this subject, to indicate that, preferably, the housing body 16A and the cover 16B are made of conductive material, and, by

example, metal.

  According to the invention, the connection device 1 5 comprises at least one cell 18, which is suitable for direct engagement of the end, previously partly stripped, as indicated below, of a coaxial cable 10 to be connected , and which is generally cylindrical, with, according to arrangements described also in more detail later, on the one hand, acting laterally with respect to this cell 18, a contact element 19, which is elongated parallel to the axis A1 of the cell 18, and on which the coaxial cable 10 must be connected between its outer sheath 13 and its shield 12, and a cam, which is rotatably mounted around an axis of rotation A2 parallel to the axis A1 of l cell 18, and which, transversely relative thereto, has at least one clamping rib 21, the crest distance D relative to its axis of rotation A2 varies around it, and, on the other hand , acting axially with respect to the cell 18, beyond this, a contact terminal 22 with which the central core 11 of the coaxial cable 10 is intended to come into

taken.

  In the embodiments shown, the connection device according to the invention comprises, side by side, two cells 18, whose axes A1 are parallel to each other, and which are served jointly by the same cam 20 , for the connection, individual or joint, of two cables

coaxial 10.

  In practice, these cells 18 belong to the housing body 16A, and

  they extend generally parallel to the lower surface thereof.

  In the embodiments shown, the connection device according to the invention further comprises two outlet end pieces 23, 23 'which

  are connected, each respectively, with the two cells 18.

  But, while the two cells 18 are identical to each other, these

  two outlet tips 23 23 'are differentiated.

  Indeed, and as it is better visible in FIGS. 4 and 21, in the outlet nozzle 23 intervenes, axially, a contact piece 24 of pin type, and, in the outlet nozzle 23 ', a contact piece 24 'socket type. In the embodiment shown, the connection device 15 according to the invention comprises a third outlet nozzle 23 ", in which

  intervenes, axially, a 24 "lyre type contact part.

  In practice, the three outlet ends 23, 23 ', 23 "belong to the cover 16B, projecting, parallel to each other, on the surface

superior of it.

  They thus all extend perpendicular to the cells 18.

  In the housing 16, the connection device 15 according to the invention comprises, in the embodiments shown, two internal blocks 25A, 25B, which are both made of insulating material, and between which

  intervenes a printed circuit board 26.

  The internal block 25A is attached in the casing body 16A, behind the cells 18, and, for its reception, this housing body 16A forms, in

hollow, housing 28.

  In practice, the internal block 25A symmetrically forms two pockets 29, one at a time per cell 18, and, in correspondence, the housing

  28 of the housing body 16A forms two chambers 30.

  The internal block 25B intervenes in the cover 16B.

  It comprises, projecting from its upper surface, on the one hand, a chimney 31, for maintaining and insulating the contact piece 24 "in the outlet nozzle 23", and, on the other hand, a boss 32, which, in the embodiment more particularly shown in FIGS. 1 to 20, ensures the centering of a drum spring 33 in the outlet end piece 23 ', and which, for

to do this, is starred.

  The printed circuit board 26, which extends substantially along the junction plane of the housing body 16A and the cover 16B, carries, on the one hand, on its face facing the housing body 16A, the two contact terminals 22 each associated respectively with the two cells 18, and, on the other hand, on

  its face facing the cover 16B, the three contact parts 24, 24 ', 24 ".

  It also provides all the necessary electrical connections.

  As is better visible in Figures 5 to 9, on the one hand, and in Figures 24 and 26, on the other hand, the bottom 34 of each of the cells 18 is perforated by an opening 35, for the passage of the central core 11 of a coaxial cable 10. In practice, the corresponding contact terminal 22 intervenes beyond

from this background 34.

  More specifically, for each of the cells 18, and as will appear more fully below, this contact terminal 22 intervenes in the pocket 29 of the internal block 25A inserted in the corresponding chamber 30 of the

  housing 28 formed by the housing body 16A.

  In addition to the two chambers 30 each corresponding respectively to the two cells 18, the housing 28 of the housing body 16A forms, in its zone

  middle, between the cells 18, for the cam 20, a third chamber 36.

  For each of the cells 18, the contact element 19 is, in the embodiments shown, an axially blunt blade at its end. In other words, this contact element 19 extends, circularly, only over a fraction of the circumference around the axis A1 of the cell 18

with which it is associated.

  In practice, and as shown diagrammatically in FIG. 6, the angle at the corresponding incoming center A3 is less than 90, being for example of the order of. In the embodiments shown, and as is better visible in FIG. 19, the contact element 19 extends between the axis A1 of the cell 18 with which it is associated and the axis of rotation A2 of the cam 20, by means of a lateral extension 38 of this cell 18 by which the latter

  communicates with the chamber 36 in which the cam 20 operates.

  Preferably, and this is the case in the embodiments shown, the internal surface 39 of the contact element 19, that is to say the surface of the latter facing the socket 18, is at least partially cylindrical , by being centered on the axis A1 of this cell 18, to be shaped according to the

  outer contour of a coaxial cable 10.

  Preferably, also, and this is also the case in the embodiments shown, the outer surface 40 of the contact element 19, that is to say the surface of the latter facing the cam 20, is present, transversely, a recess 42, in line with the clamping rib 21

of this cam 20.

  For example, and as shown, this recess 42 extends obliquely to the axis AI of the cell 18, instead of extending

perpendicular to it.

  In the embodiments shown, and for each of the cells 18, the contact element 19 is in one piece with the housing body 16A,

  by forming a single piece with it.

  In practice, for each of the cells 18, the contact element 19 extends cantilevered from the bottom 34 of this cell 18, at the edge of

the opening 35 opening this bottom 34.

  In the embodiments shown, and as is better visible, on the one hand, in FIGS. 15 to 17, and, on the other hand, in FIGS. 29 to

  31, the cam 20 comprises, axially, a hub 44.

  In the embodiment more particularly represented in FIGS. 1 to 20, and as it is better visible in FIGS. 19 and 20, it is rotatably mounted, by one of the ends 45 of this hub 44, in a bearing 46 provided for it on the housing body 16A, and, by the other end 47 of this hub 44, it is rotatably mounted in a cradle 48 also provided for it on the housing body 16A, with, overhanging this cradle 48, for its retaining transversely relative to its axis of rotation A2, an elastically deformable bar 50 which belongs to the internal block 25A reported in

this housing body 16A.

  In practice, the bearing 46 belongs to the chamber 36 of the housing 28 that

forms the housing body 16A.

  It extends circularly over 360.

  In practice, also, the bearing 46 opens axially to the outside, between the cells 18, so that, by its corresponding end 45, the hub 44 of the cam 20 is accessible to the user, for the control in

rotation of it.

  Preferably, and as shown, this end 45 of the hub 44 of the cam 20 has, diametrically, a groove 51, in the manner of

the head of a screw.

  As a corollary, the cradle 48 belongs to a niche 53 extending

  locally chamber 36, Figures 5 and 6.

  It extends circularly over 180.

  In the embodiment shown in FIGS. 1 to 20, the hub 44 of the cam 20 comprises, transversely, recessed with respect to its end 45, in the favor of a median section 54 of larger diameter, a shoulder 55 by which this cam 20 is able to be axially wedged

  against the wall of the housing body 16A in which the bearing 46 is formed.

  As a corollary, the internal block 25A comprises, on the side of the opposite end 47 of the cam 20, and, therefore, on the side opposite to the bearing 46, a tongue 56 by which it axially wedges this cam 20, bearing transversely on the hub 44 thereof and thereby biasing this cam 20 in the direction of

  the wall of the housing body 16A in which the bearing 46 is formed.

  Preferably, and as shown in FIGS. 4 and 12, this tongue 56 has, at its end, on the side facing the cam 20, an oblique face

  57, to facilitate its engagement behind the hub 44 of this cam 20.

  In the embodiments shown, the cam 20 includes circumferential stops 58, which, elongated along generatrices of its hub 44, are capable of limiting the angular movement of the

  cam 20 around its axis of rotation A2.

  In the embodiment more particularly shown in Figures 1 to 20, it is the middle section 54 of the hub 44 which is used

  for the constitution of these circumferential stops 58.

  Anyway, within the limits of the corresponding angular movement, indexing means are provided, in the embodiments shown, between the hub 44 of the cam 20 and the housing body 16A, to mark positively two positions of this cam 20 orthogonal to one another, which are, in practice, the two useful positions thereof, namely, one its standby position, before the

  wiring, and the other its clamping position, after this wiring.

  In the embodiment more particularly shown in FIGS. 1 to 20, these indexing means comprise, projecting from the cradle 48 of the housing body 16A, in the median zone of this cradle 48, a bead 59, and, in hollow on the hub 44 of the cam 20, at the end 47 of

  the latter, two grooves 60 angularly spaced from one another by 90.

  In the embodiments shown, the cam 20 has only one clamping rib 21, but this is split into two lobes 62, which extend transversely in diametrically opposite directions

  one relative to the other, at the rate of one lobe 62 per cell 18.

  For example, and as shown, each of these lobes 62 has, in section

  axial, a triangular profile with flat crest.

  In the embodiments shown, the cam 20 is in one piece, its clamping rib 21 forming a single piece with its

hub 44.

For example, it is made of metal.

  In the embodiment more particularly represented in FIGS. 1 to 20, and as is better visible in FIGS. 10 to 12, the two pockets 29 that the internal block 25A forms are connected to each other by a trigger guard 63 from the middle zone of which protrude, back to back, in alignment with one another, on the one hand, on the side of the cradle 48 formed by the housing body 16A, the tongue 56 already described above, and, on the other hand, on the side of the printed circuit board 26, a rod 64, which is responsible for

  contribute to the maintenance of this internal block 25A in the boot 16.

  The elastically deformable bar 50, also already previously described, extends parallel to the trigger guard 63, at a distance from the latter, by connecting

  one to the other two returns to square 65 of this trigger guard 63.

  For the passage of the central core 11 of a coaxial cable 10, each of the pockets 29 of the internal block 25A has, to the right of the opening 35 of the bottom 34 of the corresponding cell 18 of the housing body 16A, along the 'axis

  A1 of this cell 18, a bore 67.

  Preferably, and this is the case in the embodiments

  shown, this bore 67 is preceded by an engagement converger 68.

  Furthermore, in the embodiment more particularly shown in FIGS. 1 to 20, this engagement convergent 68 is surrounded, externally, at its outlet, by a flange 69, which, projecting,

  also contributes to maintaining the internal block 25A in the housing 16.

  For each of the cells 18, the contact terminal 22 also includes, in the embodiments shown, for the passage of the central core 11 of a coaxial cable 10, and as it is better visible in FIG. 18 , a bore 70, with, in line with this bore 70, two lips 71, which are elastically deformable, and which, directed towards one another at their end, form, jointly, a slot 72 elongated perpendicularly

  to the axis A1 of the corresponding cell 18.

  In addition, in these embodiments, for each of the cells 18, the contact terminal 22 has a tail 73, by which it is attached

  on the printed circuit board 26.

  In the embodiment more particularly shown in FIGS. 1 to 20, the lips 71 of the contact terminals 22 extend beyond

their drilling 70.

  In addition, in this embodiment, ribs 74 are provided projecting from the bottom of each of the pockets 29 of the internal block 25A, to abut these lips 71, these ribs 74 jointly forming a

  housing 75 suitable for at least partial engagement of these.

  In the embodiments shown, the bottom of each of the pockets 29 of the internal block 25A is perforated, in line with the housing 75, by an opening 76, and, in correspondence, the bottom of each of the chambers 30 of the housing body 16A is itself openworked through an opening 77, to allow the user to visually check the correct engagement of the central core 11 of a

  coaxial cable 10 through the corresponding contact terminal 22.

  Finally, in the embodiment more particularly shown in Figures 1 to 20, the housing body 16A comprises, between the two chambers that it forms, a strip 78, which, extending the wall separating one from the other these two chambers 30, extends beyond its junction plane with the

  cover 16B, for increased mass insulation of the contact terminals 22.

  During assembly, and as suggested by FIG. 4, the various constituent parts of the connection device 15 according to the invention are simply stacked with each other, it being understood that the contact terminals 22, on the one hand, and the contact parts 24, 24 ', 24 ", on the other hand, are previously attached to the printed circuit board 26, being duly

  welded to the tracks provided for them thereon.

  In practice, the cam 20 is initially inserted at an angle into the chamber 36 of the housing body 16A, for the engagement of the end 45 of its hub 44 in the bearing 46 formed by the latter, and it is then straightened to the flattening of the other end 47 of this hub 44 in the cradle 48

planned for it.

  The internal block 25A then ensures both the axial setting of this cam 20

than its transverse support.

  In the standby position, the lobes 62 of the clamping rib 21 of the cam 20 extend crosswise with respect to the cells 18 of the housing body 16A. They therefore leave the space between this cam entirely clear.

  and the contact elements 19 associated with the cells 18.

  For the connection of a coaxial cable 10, it is first of all necessary to strip the relevant end of the latter up to its central core 11, as

  shown in solid lines in Figure 19.

  It suffices, then, to forcibly engage this coaxial cable 10 in one of the cells 18 of the connection device 15 according to the invention, by ensuring that it comes to engage on the corresponding contact element 19 between its outer sheath 13 and its shield 12, as also shown in the

figure 19.

  In doing so, the central core 11 of this coaxial cable 10 also engages in the corresponding pocket 29 of the internal block 25A, and, after passing through the bore 70 of the contact terminal 22 present in this pocket 29, it

  engages with the lips 71 thereof.

  Finally, it suffices to then turn the cam 20 a quarter of a turn.

  During this rotation, the lobe 62 concerned of the clamping rib 21 of this cam 20 pushes the outer sheath 13 of the coaxial cable 10, until it is applied against the contact element 19 behind the recess 42 of the latter, and, this outer sheath 13 thus closely matching the shape of this contact element 19, the maintenance of the coaxial cable 10 is therefore

firmly assured.

  If, as shown diagrammatically in broken lines in FIGS. 19 and 20, a second coaxial cable 10 is also used, a single operation

  of the cam 20 is sufficient to simultaneously maintain the two coaxial cables 10.

  The embodiment shown in Figures 21 to 32, which is the preferred embodiment, is broadly similar to that shown in

Figures 1 to 20.

  Regarding, however, the cover 16B, the outlet nozzle 23 'is open, laterally, by at least one slot 80 which, from its outlet, extends over at least part of its height along the one of its generators. For example, and as shown, three slots 80 are thus provided on this outlet nozzle 23 ', being regularly distributed circularly the

along its perimeter.

  This outlet nozzle 23 ′ thus presents, by itself, sufficient elasticity so that it is possible to overcome the drum spring 33

previously planned.

  In addition, in this embodiment, the cam 20 is, by the ends 45, 47 of its hub 44, rotatably mounted in cradles 46 ', 48 provided for it on the housing body 1 6A, with, overhanging these cradles 46 ', 48, to ensure its retention transversely relative to its axis of rotation A2, instead of the elastically deformable bar 50 previously provided, a yoke 50', which, like this elastically deformable bar 50, belongs to the internal block 25A reported in the

housing body 1 6A.

  In the embodiment shown, this yoke 50 'comprises, transversely, that is to say substantially perpendicular to the axis of rotation A2 of the cam 20, a slot 82, for the passage of the rib of

tightening 21 of this cam 20.

  It is thus divided into four arms 83.

  In practice, at least one of these arms 83 is used to participate in the constitution of the indexing means provided between the hub 44 of the

cam 20 and the boot body 16A.

  To do this, this arm 83 comprises, projecting inwardly, a bead 59 'by which, instead of the bead 59 previously provided, it is able to cooperate in interlocking with one or other of the grooves 60

  also provided on the hub 44 of the cam 20.

  For example, and as shown, each of the arms 83 of the yoke 50 '

includes such a bead 59 '.

  Furthermore, in the embodiment shown, each of the cradles 46 ', 48 of the housing body 16A opens axially to the outside, so that the hub 44 of the cam 20 is accessible to the user by each

from its ends 45, 47.

  In practice, in the embodiment shown, the bearing 46 ′ opens outwards thanks to a recess 85, of circular outline, of the housing body 16A, level with the opening of the cells 18. On the other hand, in this embodiment, the cradle 48 opens out

  directly outside by itself.

  In practice, in this embodiment, the axial timing of the cam is ensured frontally, by direct cooperation of the transverse end faces of its hub 44 with the housing body 16A, on the one hand, around

  of the recess 85 thereof, and, on the other hand, beyond its cradle 48.

  As a corollary, the cam 20 not only has a groove 51 at the end 45 of its hub 44, but also also a groove 51 ′, likewise

  type, at the other end 47 of it.

  As before, the cam 20 has stops

  circumferential 58 for limiting its angular travel.

  In practice, these circumferential stops 58 intervene at one and the other of the ends 45, 47 of its hub 44, and the cradles 46 ', 48 of the housing body 16A each have, laterally, and from both sides. other,

notches 86.

  Furthermore, in the embodiment shown in Figures 21 to 32, one of the lobes 62 of the clamping rib 21 of the cam 20 is shortened, by a flat 87, at one of its circumferential ends, to facilitate

  a rotation of 90 of this cam 20.

  Furthermore, in this embodiment, there is provided, between the body of

  housing 16A and the internal block 25A, latching means 88.

  It is thus advantageously possible, from the assembly of the connection device 15, to constitute, with this housing body 16A and this internal block A, a unitary sub-assembly, which encloses the cam 20, and which is capable of being returned without this cam 20 escaping it, which facilitates this assembly. In practice, these latching means 88 operate beyond the cam 20 in favor of a bridge 90 of the housing body 16A, which is in the form of a tunnel, and which, instead of a single wall , separates one from the other the two chambers 30 of this housing body 16A, in alignment with its cradles 46 ', 48. For example, and as shown, these latching means 88 include, on the one hand, on the boot body 16A, a head 91, which projects on this trigger guard 90, and which has, laterally, back to back, two notches 92, and, on the other hand, on the internal block 25A, two elastically deformable legs 93, which extend in a console, in the direction of one another, between the pockets 29 formed by this internal block 25A, and which are capable of being hooked each

  respectively on the two previous notches 92.

  Furthermore, in the embodiment shown, the boot body 16A has, recessed on its lower surface, in line with the chamber 36 in which the cam 20 intervenes, parallel to the axis of rotation A2 of the latter, a groove 95 suitable for serving as a stripping template for the core

control unit 11 of a coaxial cable 10.

  Finally, in the embodiment shown in FIGS. 21 to 32, the lips 71 of the contact terminals 22 extend below their bore 70, as is better visible for one of these contact terminals 22 in FIG. 32, which promotes the durability of a contact between the central core 11 of a coaxial cable 10 and such a contact terminal 22, even if, as a result of a bending of

  this coaxial cable 10, this central core 11 comes to retract.

  For the rest, the provisions are similar to those previously

  described, and, similarly, the assembly is done according to the process already described.

  However, if desired, the boss 32, previously starred, can be replaced by a simple round boss, its function then being simply to perfect the maintenance of the contact piece 24 'and, thus, to contribute to the

  quality of the electrical contact ensured by it.

  Furthermore, and as shown in FIG. 33, for the axial setting of the cam 20, the lobes 62 of the clamping rib 21 of this cam 20 can be carried by a median section 54 of its hub 44 forming a shoulder 55 at each of its ends, as in the form of

  embodiment described with reference to Figures 1 to 20.

  But, to be inserted between the arms 83 of the yoke 50 ', by means of the slot 82 thereof, and thus cooperate in axial setting with arms 83, this median section 54 of the hub 44 of the cam 20 has, axially, a reduced length, which is substantially equal to the width of this slot 82 while being

  slightly less than this width.

  In the foregoing, it has been assumed that the contact elements 19 associated with the cells 18 are relatively rigid, so that they do not bend very little during the intervention of the cam 20 and that it can thus remain, as shown, a certain clearance between the coaxial cables 10 and the

  cells 18, on the side of these cells 18 opposite the cam 20.

  However, as a variant, the contact elements 19 may have a certain elasticity, which, during the implementation of the cam 20, can cause the coaxial cables 10 to come to be pressed against the wall of the cells.

  1 8, on the side thereof opposite this cam 20.

  According to another alternative embodiment, not shown, at least one of the contact elements 19, and, for example, each of these, belongs to a contact part which, distinct from the housing body 16A, is attached in this one. According to another alternative embodiment, also not shown, which is independent of the previous one, but which can also be combined with the latter, at least one of the contact elements 19, and, for example, each of

  these, is disposed on the side of the cells 1 8 opposite the cam 20.

  Finally, according to another alternative embodiment, also not shown, the cam 20 has at least two clamping ribs 21, which, staggered along its axis of rotation A2, are stepped relative to one another.

to the other.

  In other words, to best satisfy coaxial cables 10 of different outside diameters, the peak distances D of these ribs of

  clamping 21 are different from each other for the same radius of the assembly.

  More generally, the present invention is not limited to the embodiments described and shown or to those simply mentioned, but encompasses any variant of execution and / or combination of

* these various embodiments.

  For example, instead of being in one piece, the cam used can be in two parts, one comprising its hub, the other comprising its

or its clamping ribs.

  In addition, the field of application of the invention is not limited to that of the connection devices forming by themselves an individual entity, whether it is a base or a plug, but extends equally to that of the connection devices integrated into any receiver, for the

serving it.

  Finally, when, as shown, the connection device according to the invention comprises two cells suitable for each receiving a coaxial cable, this connection device can simply be implemented for the

  connection of one such coaxial cable to another.

  It does not therefore necessarily include, in this case, any outlet end pieces, one of the cells constituting by itself a cell

  the inlet and the other an outlet cell.

  More generally, the number of outlet tips is

independent of the number of cells.

Claims (26)

  1. Connection device for coaxial cable, characterized in that it comprises at least one cell (18) suitable for direct engagement with the end, previously partly stripped, of a coaxial cable (10) to be connected, with, on the one hand, acting laterally with respect to this cell (18), a contact element (19), which is elongated parallel to the axis (AI) of the cell (18), and on which the cable coaxial (10) must be connected between its outer sheath (13) and its shield (12), and a cam (20), which is rotatably mounted around an axis of rotation (A2) parallel to the axis (A1) of the cell (18), and which, transversely with respect to it, has at least one clamping rib (21) whose crest distance (D) from its axis of rotation (A2) varies around the latter, and, on the other hand, acting axially with respect to the cell (18), a contact terminal (22) with which the central core   (11) of the coaxial cable (10) is intended to come into engagement.   2. Connection device according to claim 1, characterized in that the contact element (19) is an axially blunt blade at its end.   3. Connection device according to any one of claims   1, 2, characterized in that the internal surface (39) of the contact element (19) facing the socket (18) is at least partially cylindrical, being oriented on the axis (A1) of this cell (18).   4. Connection device according to any one of claims   1 to 3, characterized in that the contact element (19) extends between the axis (A1)   of the cell (18) and the axis of rotation (A2) of the cam (20).   5. Connection device according to claim 4, characterized in that the outer surface (40) of the contact element (19) facing the cam (20) has, transversely, a recess (42) in line with the   clamping rib (21) of this cam (20).   6. Connection device according to claim 5, characterized in that the recess (42) of the contact element (19) extends obliquely by   relative to the axis (A1) of the cell (18).   7. Connection device according to any one of claims   1 to 6, characterized in that the cell (18) belongs to a housing body (16A), and the contact element (19) is integral with this body housing (16A).   8. Connection device according to any one of claims   1 to 6, characterized in that the cell (18) belongs to a housing body (16A), and the contact element (19) to a contact piece which, distinct from this   housing body (16A), is attached therein.   9. Connection device according to any one of claims   1 to 6, characterized in that the cell (18) belongs to a housing body (16A), and the cam (20) comprises a hub (44), by one of the ends (45) from which it is mounted rotatable in a bearing (46) provided for it on the housing body (16A), and by the other end (47) from which it is rotatably mounted in a cradle (48) also provided for it on this housing body (16A ), with, overhanging this cradle (48), an elastically deformable bar (50) which belongs to an internal block (25A) attached in the housing body (16A).   i10. Connection device according to claim 9, characterized in that the bearing (46) of the housing body (16A) opens axially to the outside, so that, by its corresponding end (45), the hub (44) of the cam (20) is accessible to the user.   11. Connection device according to any one of claims   9, 10, characterized in that the internal block (25A) comprises, on the side opposite the bearing (46) of the housing body (16A), a tongue (56) by which it wedges axially the cam (20).   12. Connection device according to any one of claims   1 to 6, characterized in that the cell (18) belongs to a housing body (16A), and the cam (20) has a hub (44), by the ends (45, 47) of which it is rotatably mounted in cradles (46 ', 48) provided for it on the housing body (16A), with, overhanging these cradles (46', 48), a yoke (50 ') which belongs to an internal block (25A) reported in the body of housing (16A).   13. Connection device according to claim 12, characterized in that the yoke (50 ') of the internal block (25A) has transversely a slot (82), for the passage of the clamping rib (21) of the cam (20 ).   14. Connection device according to any one of claims   12, 13, characterized in that each of the cradles (46 ', 48) of the housing body (16A) opens axially to the outside, so that the hub (44) of   the cam (20) is accessible to the user by each of its ends (45, 47).   15. Connection device according to any one of claims   9 to 14, characterized in that it is provided, between the housing body (16A) and the   internal block (25A), latching means (88).   16. Connection device according to claim 15, characterized in   that the latching means (88) intervene beyond the cam (20).   i 5 17. Connection device according to any one of claims   , 16, characterized in that the latching means (88) comprise, on the housing body (16A), a head (91) which has, laterally, back to back, two notches (92), and, on the internal block (25A), two elastically deformable tabs (93), which are capable of being hooked each on the two previous notches (92).   18. Connection device according to any one of claims   9 to 17, characterized in that indexing means (59 or 59 ', 60) are   provided between the hub (44) of the cam (20) and the housing body (16A).   19. Connection device according to any one of claims   9 to 18, characterized in that the housing body (16A) is made of material   conductive and the internal block (25A) of insulating material.   20. Connection device according to any one of claims   1 to 19, characterized in that the cam (20) has only one rib tightening (21).   21. Connection device according to any one of claims   1 to 19, characterized in that the cam (20) has at least two clamping ribs (21), which, staggered along its axis of rotation (A2), are   stepped relative to each other.   22. Connection device according to any one of claims   1 to 21, characterized in that it comprises a contact terminal (22), which acts axially with respect to the cell (18), beyond the latter, and with which the central core (11) coaxial cable (10) is intended to come into engagement, the bottom (34) of the cell (18) being perforated by an opening (35), for the   passage of this central core (11).   23. Connection device according to claim 22, characterized in that the contact terminal (22) intervenes in a pocket (29) belonging to an internal block (25A) attached in the housing body (16A), and, for the passage of the central core (11) of a coaxial cable (10), this pocket (29) has a hole (67) in line with the opening (35) of the bottom (34) of the cell (18) . 24. Connection device according to claim 23, characterized in that the bore (67) of the internal block (25A) is preceded by a convergent engagement (68).   25. Connection device according to any one of claims   22 to 24, characterized in that the contact terminal (22) comprises, for the passage of the central core (11) of a coaxial cable (10), a bore (70), with, in line with this bore (70), two lips (71), which are elastically deformable, and which, directed towards one another at their end, form a slot (72).   26. Connection device according to any one of claims   1 to 25, characterized in that it forms by itself an individual entity.   27. Connection device according to claim 26, characterized in that it comprises a housing (16) formed of a housing body (16A) to which the cell (18) belongs and of a cover (16B) which closes the housing body (16A).   28. Connection device according to any one of claims   26, 27, characterized in that it comprises, in connection with the cell (18), a outlet nozzle (23, 23 ').   29. Connection device according to any one of claims   26 to 28, characterized in that it comprises two cells (18), which are   served in common by the same cam (20).