EP0272189A1 - Linking connector for an electrical device with latching means on a mounting rail, and electrical device suitable for putting such a linking connector into operation - Google Patents

Abstract

This relates to one or more electrical links between two electrical devices (10A, 10B) joined together contiguously on a mounting rail (11). According to the invention, there is put into operation for this purpose a coupling connecter (15) which is partially engaged beneath the housing (12) of each of the electrical devices (10A, 10B) and which carries one or more connection components (20) suitable for the electrical links to be established. Application to electrical devices with latching means on a mounting rail, and, for example, to electrical surveillance devices. <IMAGE>

Description

The present invention relates generally to electrical devices suitable for being snapped onto any mounting rail, as is the case, for example, within cabinets, called electrical cabinets, in which a certain number can be grouped. number of such devices.

Such electrical devices are commonly called "modular", insofar as, all of the same transverse profile, they each have a length which is a multiple of the same basic module common to the whole.

Arranged one after the other on the same mounting rail, it may be necessary to establish electrical connections from one to the other.

This is the case, for example, for electrical devices intended for equipping an installation within which there is to monitor the opening or closing state of various contacts disseminated at various points, and, if necessary, to trigger an alarm accordingly.

At least two separate electrical devices are therefore to be implemented, one intended for the sole supply of the assembly, the other suitable, on the one hand, for serving a certain number of loops. monitoring, and, on the other hand, to the management of these, it being understood that, depending on the power of which the first is capable, it is possible that a third, which, not constituting, is added to this second device. that a simple extension of the previous one is only suitable for serving a certain number of additional surveillance loops.

To date, when electrical connections are to be established between electrical devices thus staggered along the same mounting rail, these electrical connections are usually made using bridging each carried out by a wire.

Such an arrangement has various drawbacks.

First of all, in the electrical connection to be established between a component of one device and a component of the other, it leads to a multiplication of contact points.

Indeed, even when such components are usually directly reported on a "card", that is to say on a support plate also carrying a printed circuit specific to their service, which implies for each of these components a first point of contact, it is necessary, for the connection of the wire ensuring the electrical connection concerned, to implement, on this same card, a connection terminal, for example a screw connection terminal, suitable for the connection of this wire, which implies, in addition, a second point of contact between such a connection terminal and the card concerned and a third point of contact between the wire and this connection terminal, that is, for the entire electrical connection thus carried out, a total of six contact points.

This inevitably results in a relatively high passage resistance which can cause a harmful voltage drop, especially when, as is the case in electronics, the corresponding currents are low currents.

In addition, the electrical connections thus produced are difficult to execute, long and costly, in particular when the accessibility to the electrical devices concerned is measured, as is precisely the case for example when these electrical devices are installed at the bottom of an electrical cabinet. , and their proper execution depends on the operator who ensures their realization.

Finally, despite the identification usually provided to obviate this difficulty, connection errors are still possible, especially when, for troubleshooting, you have to unplug one device to replace it with another.

The present invention generally relates to a provision making it possible to avoid these drawbacks.

More specifically, it has first of all for subject a connection connector for an electrical device to be snapped onto a mounting rail, this connection connector being generally characterized in that it comprises a base made of insulating material, which is suitable for being housed under the housings of two successive electrical appliances, between such housings and the underlying mounting rail, being engaged partly in a recess provided for this purpose in the housing of one of said electrical appliances and partly in a recess also provided for this purpose in the housing of the other of these, and, carried by said base, at least one metallic connection member, which, at each of the transverse ends of this base, has a contact piece suitable for a connection electrical with a contact track provided for this purpose in the recess of the housing of the corresponding electrical device; it also relates to an electrical device to be put into place by snap-fastening on a mounting rail suitable for the implementation of such a connection connector.

In practice, the connection connector according to the invention comprises, parallel to each other, several connection members, which are all identical to each other, and whose contact parts are elastically deformable substantially perpendicular to the base which carries them, for their application under elastic pressure with the corresponding contact tracks of the electrical appliance concerned.

For example, in a preferred embodiment, these connection members are in the form of simple metal pins of suitably shaped round wire.

Anyway, for the implementation of such a connection connector, an electrical device according to the invention comprises, jointly, at least one of the transverse ends of its housing, at the base of this- ci, a recess, in which can engage such a connection connector, and in which opens at least one contact track, and, in practice, a plurality of such contact tracks, one per connection member carried by said link connector.

For example, when such an electrical device comprises, for the support and / or the service of one or more constituents, a printed circuit board, or "card", these contact tracks can very simply be carried by this circuit board printed, and it is therefore this which opens directly into the corresponding recess in its housing.

Anyway, for the electrical connections to be established between two electrical devices to be put into place by snap-fastening on a mounting rail, it suffices, thanks to the connection connector according to the invention, to snap one of these electrical devices on this mounting rail, slide such a connection connector under the housing of this electrical device, then snap in turn onto the mounting rail the second electrical device concerned, or, directly, on the connection connector , or at a distance therefrom, its snap-fastening on the mounting rail then being followed by sliding along the latter until its casing engages on said connection connector.

The assembly, thus simplified, is very easy and quick, and it does not require any particular skill or any specific tool.

It can apply both to the initial installation of the electrical devices concerned and to any other subsequent intervention on them, such as those necessary for example for their maintenance or their replacement.

In all cases, provisions of complementary shape, forming a polarizer, being provided for this purpose between the connection connector and the electrical devices likely to be affected, there is no risk of poor connection between these electrical devices.

In addition, the number of contact points involved in the electrical connection established between a component of one of the two electrical devices concerned and a component of the other thereof is advantageously reduced to four, no connection terminal, to screw or the like, not involved in such an electrical connection, which advantageously reduces the passage resistance of the assembly.

Finally, covered by the housing of the electrical devices concerned, the electrical connections thus ensured between these electrical devices are advantageously inaccessible during normal operation, which in particular advantageously protects them from any inadvertent accidental intervention, and, therefore, constitutes a guarantee for their sustainability.

• la figure 1 est une vue en perspective, représentés en place sur un rail de montage, de deux appareils électriques propres à la mise en oeuvre d'un connecteur de liaison suivant l'invention ;
• la figure 2 est, à échelle inférieure, et avec un arrachement local, une vue en élévation de ces appareils électriques, suivant la flèche II de la figure 1 ;
• la figure 3 est à l'échelle de la figure 1, une vue en perspective, vue d'un premier côté, du connecteur de liaison mis en oeuvre entre ces appareils électriques;
• la figure 4 est une vue en perspective, du côté opposé au précédent, de ce connecteur de liaison ;
• la figure 4bis reprend, à échelle supérieure, la figure 4 ;
• la figure 5 en est, à échelle supérieure, une vue en plan, suivant la flèche V de la figure 3 ;
• la figure 6 en est une vue en coupe transversale, suivant la ligne VI-VI de la figue 5 ;
• la figure 7 en est une vue en coupe longitudinale, suivant la ligne brisée VII-VII de la figure 5 ;
• la figure 8 est une vue en perspective d'un des organes de connexion que comporte un tel connecteur de liaison ;
• la figure 9 est une vue partielle en élévation latérale, suivant la ligne IX-IX de la figure 2, d'un des deux appareils électriques représentés sur cette figure 2 ;
• les figures 10 et 11 sont, à la manière de la figure 9, des vues partielles en élévation latérale, suivant respectivement les lignes X-X et XI-XI de la figure 2, de l'autre des deux appareils électriques concernés ;
• la figure 12 est, suivant la flèche XII de la figure 9, une vue partielle de dessous de l'appareil électrique représenté sur cette figure 9 ;
• les figures 13A, 13B sont des vues en plan qui illustrent deux phases successives du processus de montage propre à la mise en oeuvre d'un connecteur de liaison suivant l'invention ;
• la figure 14 est une vue perspective d'un dispositif de liaison pour appareils électriques placés sur des rails de montage différents.

The characteristics and advantages of the invention will become apparent from the description which follows, by way of example, with reference to the appended schematic drawings in which:

• Figure 1 is a perspective view, shown in place on a mounting rail, of two electrical devices suitable for the implementation of a connecting connector according to the invention;
• Figure 2 is, on a smaller scale, and with a local cutaway, an elevational view of these electrical devices, along arrow II of Figure 1;
• Figure 3 is to the scale of Figure 1, a perspective view, seen from a first side, of the connecting connector used between these electrical devices;
• Figure 4 is a perspective view, on the side opposite to the previous one, of this connecting connector;
• Figure 4bis shows, on a larger scale, Figure 4;
• Figure 5 is, on a larger scale, a plan view, along arrow V of Figure 3;
• FIG. 6 is a cross-sectional view thereof, along line VI-VI of fig 5;
• Figure 7 is a longitudinal sectional view along the broken line VII-VII of Figure 5;
• Figure 8 is a perspective view of one of the connection members that includes such a connecting connector;
• Figure 9 is a partial side elevational view along line IX-IX of Figure 2, one of the two electrical devices shown in this Figure 2;
• Figures 10 and 11 are, in the manner of Figure 9, partial views in side elevation, respectively along the lines XX and XI-XI of Figure 2, of the other of the two electrical devices concerned;
• Figure 12 is, along arrow XII of Figure 9, a partial bottom view of the electrical apparatus shown in this Figure 9;
• FIGS. 13A, 13B are plan views which illustrate two successive phases of the assembly process specific to the use of a connection connector according to the invention;
• Figure 14 is a perspective view of a connecting device for electrical devices placed on different mounting rails.

As it can be seen in these figures, and more particularly in Figures 1 and 2, it is a question of ensuring one or more electrical connections between two electrical devices 10, in this case electrical devices 10A and 10B , of the snap-in type on a mounting rail 11, it being understood that, as will appear later, a greater number of such electrical devices 10 may be concerned.

These electrical devices 10 being known by themselves, and not pertaining to the present invention, they will not be described in all their details here.

Only the elements necessary for understanding the invention will be described therein.

To do this, it will suffice to indicate that they each comprise, in a housing 12 suitable for covering the mounting rail 11 by grasping it in a removable manner, one or more components to be electrically connected to one or more components of the other.

In practice, the box 12 has the same transverse contour for one and the other of the electrical devices 10 concerned, and its length, possibly different from one to the other of these, is a multiple of a basic module common to all.

The embodiment shown more particularly illustrates, by way of example, the case where, as is usual, each of the electrical devices 10 concerned comprises, in its housing 12, for the support and / or the service of its constituents, a "card" 13, that is to say a printed circuit board.

The mounting rail 11 is also not affected by the present invention.

In the embodiment shown, it is a symmetrical rail, that is to say a rail whose wings, of the same height, are each provided with a square return along their edge. , in opposite directions to each other.

But it could also be an asymmetrical rail, that is to say a rail whose wings, of different heights, have their return in a square directed towards one another.

According to the invention, for the electrical connections to be established between the electrical devices 10 concerned, in this case between the electrical devices 10A and 10B, which are of different types, a connection connector 15 is used comprising, on the one hand, a base made of insulating material 16, which is suitable for being housed, like a drawer, under the housings 12 of these two successive electrical devices 10A, 10B, between such housings 12 and the mounting rail 11 under -jacent, being partly engaged in a recess 17A provided for this purpose in the housing 12 of the electrical appliance 10A and partly in a recess 17B also provided for this purpose in the housing 12 of the electrical appliance 10B, and, on the other hand, carried by said base 16, at least one metallic connection member 20, which, at each of the transverse ends of this base 16, has a contact piece 21, suitable for an electrical connection with a contact track 22 provided for this purpose in the recess 17A, 17B of the housing 12 of the corresponding electrical appliance 10A, 10B.

In practice, the connection connector 15 comprises, parallel to each other, several identical connection members 20.

For example, in the embodiment shown in FIGS. 3, 4, there are thus three connection members 20.

Each of them consists of a round wire pin, Figure 8, and it comprises, in one piece, a middle part 23, by which, as described later, it is secured to the base 16 which carries the assembly, and, each disposed respectively at the ends of this middle part 23, two wings which form the contact parts 21 thereof.

For example, and as shown, these wings each form an acute angle V, of the order of 30 °, with the middle part 23 which they frame.

In the embodiment shown, these wings, which are each connected by a wide rounded fillet at the middle part 23, each extend, at their free end, beyond a fillet also widely rounded, by a parallel return 24 to themselves.

Anyway, each of the contact pieces 21 that a connection member 20 thus has is elastically deformable substantially perpendicular to the base 16 carrying the assembly.

The connection members 20 which thus comprises the connection connector 15 according to the invention are each individually housed in recesses 25 of its base 16, which, elongated in the form of a slot, parallel to each other to the others, at a distance from each other, all open onto the surface of this base 16, and only the contact parts 21 which, as described above, form, at their ends, these connection members 20, emerge from these recesses 25.

In the embodiment shown, the base 16, of generally parallelepipedal contour, without taking account of a usual draft angle, comprises a plate 26, in which the preceding recesses 25 are formed, and, at the periphery of this plate 26, for support on the mounting rail 11, a skirt 27.

In practice, in this embodiment, on two of the opposite sides of the plate 26, which, with respect to the direction of elongation of the mounting rail 11, form the transverse sides of this plate 26, the skirt 27 is largely indented.

The recesses 25 extend parallel to the other two sides of the plate 26, and therefore parallel to the longitudinal sides of the latter.

In the embodiment shown, there are eight of them.

At each of at least some of these recesses 25, there is associated, on the base 16, a reference 29.

These are, in the embodiment shown, globally hemispherical bosses projecting from a facet 30 of the plate 26, which, disposed along one of the transverse sides of this plate 26, is slightly set back relative to its upper surface.

In practice, in the embodiment shown, a reference 29 is thus associated with three of the recesses 25, those actually concerned by the three connection members 20 used in this embodiment.

Anyway, each of the recesses 25 that comprises the base 16 has, transversely and symmetrically on either side of its direction of elongation, three openings, namely a openings 32 in its middle zone, and two openings 33 arranged, each respectively, at its ends.

The punches to be used for the formation of these recesses 25 during the molding of the assembly are thus advantageously reinforced.

In the embodiment shown, each of the connection members 20 used is snapped, by its middle part 23, under a hook 35 present for this purpose at the bottom of the recess 25 in which it is housed, by means of the corresponding opening 32 of this recess 25.

From one recess 25 to another, the hooks 35 are arranged back to back, and each has an oblique engagement facet 36, directed towards the inside of the corresponding recess 25, and a retaining facet 37, which, parallel to the bottom of this recess 35, extends at a distance from the latter substantially equal to the diameter of the round wire of which the connection members 20 are made.

In practice, for each recess 25, the hook 35 extends transversely beyond the center line of such a recess 25.

As it is easy to understand, the opening 32 in favor of which such a hook 35 thus extends further facilitates the installation of a connection member 20 in such a recess 25, this installation implying a temporary elastic deformation of the middle part 23 of such a connection member 20, until it engages locally under this hook 35.

For the rest, that is to say in their current part, between their openings 32, 33, the recesses 25 have a width barely greater than the diameter of the round wire of which the connection members 20 are made, for good support. of these.

In the embodiment shown, the base 16 of the connection connector 15 according to the invention has, laterally projecting, along at least one of its longitudinal ribs, a tongue 39.

In practice, in this embodiment, such a tongue 39 is only provided along one of the longitudinal sides of the base 16, at the base of the latter.

Furthermore, in this embodiment, this tongue 39 comprises two successive sections 39A, 39B of different heights HA, HB, forming, in its median zone, a step 40.

In practice, these sections 39A, 39B each extend substantially at mid-length relative to the base 16, and that, 39A, which is disposed on the side of the electrical appliance 10A, has an average height HA less than the average height HB of that, 39B, located on the side of the electrical appliance 10B.

Finally, for its guidance along the mounting rail 11, the base 16 of the connection connector 15 according to the invention has, projecting on its lower surface, in the embodiment shown, along at least one at its longitudinal sides, at least one lug 42.

In practice, in this embodiment, two lugs 42 are thus provided, at a distance from each other, along only one of the longitudinal sides of the base 16, that along which the tongue is already present. 39.

As a corollary, the recess 17A presented by the housing 12 of the electrical appliance 10A for engaging the connection connector 15 according to the invention has a transverse contour, at least part of which is in the profile of the base 16 of this connector connection 15, and, in particular, this transverse contour has, laterally, in correspondence with the tongue 39 of this connection connector 15, a recess 41 whose height H'A, taking into account the grip of the housing 12 on the mounting rail 11, corresponds to the height HA of the smallest section 39A of this tongue 39, while being slightly greater than the latter.

In practice, the housing of the electrical appliance 10A thus only has a recess 17A at one of its transverse ends, that concerned by the connector. link 15, at the base of this transverse end.

By cons, and for reasons which will appear below, the housing 12 of the electrical appliance 10B has a recess at one and the other of its transverse ends.

Thus, in addition to the recess 17B which it has at its transverse end concerned by the connection connector 15, it has a recess 17ʹB at its opposite transverse end, FIGS. 1 and 11.

As before, the transverse contour of these recesses 17B, 17ʹB is at least partly in the profile of the base 16 of the connection connector 15, and, in particular, it has, laterally, in correspondence with the tongue 39 of this connection connector 15, a step 42ʹ, 42ʺ whose height HʹB corresponds, under the same conditions as above, to the height HB of the section of greatest height 39B of this tongue 39.

Thus, depending on the electrical device 10A or 10B concerned, the height HʹA, HʹB of the lateral recess 41, 42ʹ, 42ʺ of the recess 17A, 17B or 17ʹB of such an electrical device corresponds to one or the other. heights HA, HB of the tongue 39 of the base 16 of the connection connector 15.

This tongue 30 therefore constitutes, in the embodiment shown, and as will appear better later, a polarizing device.

Anyway, the contact tracks 22 with which the electrical apparatuses 10A, 10B are provided are in practice present on the lower surface of their card or printed circuit board 13, the latter extending widely for this purpose in the corresponding recess 17A, 17B or 17ʹB, at the top of it.

Preferably, and as shown, there is provision, transversely, in such a recess 17A, 17B or 17ʹB, a stop 44 capable of limiting the engagement of a connection connector 15 therein.

In practice, this is an internal partition of the case 12 concerned.

For the implementation of the connection connector 15 according to the invention, the procedure is first, in the usual manner, for the installation, by snap-fastening, of the electrical appliance 10A on the mounting rail 11, FIG. 13A.

The connecting member 15 is then in turn applied, by the edge of its skirt 27, against the mounting rail 11, with contact of its lugs 42 with the edge of the corresponding wing thereof.

It then suffices to slide the connection connector 15 along the mounting rail 11, according to the arrow F1 in FIG. 13A, until it engages half in the corresponding recess 17A of the housing. 12 of the electrical appliance 10A, FIG. 13B.

Given the arrangements described above, this engagement can only be made in a well-defined orientation, for which the tongue 39 of the connection connector 15 is on the same side as the recess 41 of the recess 17A of the housing 12 of the device. electric 10A, with its lower section 39A directed towards the latter.

Finally, it suffices in turn to put in place on the mounting rail 11, by snap-fastening, the electrical appliance 10B.

As shown schematically by the arrow F2 in FIG. 13B, on which the electrical appliance 10B is only shown diagrammatically in broken lines by its outline, this positioning can be done directly on the connection connector 15, by pivoting around this one.

Alternatively, it can be done at a distance from the connection connector 15, and it then suffices to slide the electrical appliance 10B along the mounting rail 11 until it engages on the part of the connector link 15 protruding from the housing 12 of the electrical appliance 10A.

As is easy to understand, this engagement of the electrical appliance 10B on the connection connector 15 is made possible by the height, suitable for this purpose, of the lateral recess 42ʹ of the corresponding recess 17B of its housing 12.

In all cases, the electrical devices 10A, 10B, once in place, are contiguous, one after the other, and their housings 12 therefore completely cover the connection connector 15.

As a corollary, their contact tracks 22 having been arranged accordingly, the desired electrical connections between these electrical devices 10A, 10B are then provided by the connection members 20 that comprises the connection connector 15 according to the invention.

In fact, by construction, the projection D1 that the contact pieces 21 of these connection members 20 form at rest on the plate 26 of the base 16 of the connection connector 15 which carries them, FIG. 6, is greater than the distance D2 separating this plate 26 from the card or printed circuit board 13 of the electrical appliances 10A, 10B when, in FIG. 2, the connection connector 15 is inserted under the housing 12 of these.

Given the elasticity of these contact pieces 21, they are then resiliently applied to the contact tracks 22 concerned, their location having been planned accordingly.

It goes without saying, however, that the invention is not limited to the case where only two electrical devices 10A, 10B are thus concerned.

On the contrary, it can also be extended to a greater number of electrical devices.

For example, and as shown diagrammatically in broken lines in FIG. 1, a third electrical appliance 10C, in a way forming an extension of the electrical appliance 10B, can be envisaged.

This is the reason why the electrical appliance 10B has a recess 17B, 17ʹB at one and the other of its transverse ends.

By its 17ʹB recess, it can indeed be placed operates a second connection connector 15 according to the invention, capable of ensuring between it and the electrical appliance 10C the necessary electrical connections.

By the polarizing forms to which the tongue 39 of such a connector 15 corresponds, it is impossible, in practice, for a direct connection to be established between, for example, an electrical appliance 10A and an electrical appliance 10C.

All the electrical devices bearing on the front indications to be read and therefore having to be all placed in the same orientation on the mounting rail 11, there is no ambiguity on this subject.

In practice, for the electrical connections to be established between the electrical appliance 10B and the electrical appliance 10C which forms an extension thereof, a number of connection members 20 greater than three may be necessary.

This is the reason why the base 16 of the connection connector 15 according to the invention has, on standby, a greater number of recesses 25.

As a variant of the preceding arrangements, the connection members that the connection connector comprises according to the invention, instead of being made up of pins acting in the manner of wipers, as more particularly described and shown, could consist, for example, of clamps coming to engage on the end of the card or corresponding printed circuit board.

Likewise, the implementation of such a printed circuit board or card is not essential, and specific contact tracks could be substituted for it, to which the constituents concerned would each be individually connected in an appropriate manner.

In Figure 14 is shown a connecting device 45 may be implemented when the electrical devices to be connected are not arranged on the same mounting rail but on separate mounting rails.

This connection device 45 consists of two electrical appliances 46 connected by a cord 47.

These electrical devices 46, which, in practice, are identical to each other, and whose contour, in elevation, is like that of the previous electrical devices 10, are each reduced to a simple housing 48 suitable for implementation of a connection connector according to the invention.

This housing 48 therefore has, at its base, at at least one of its transverse ends, and, in practice, at only one of these, a recess 17, in which such a connection connector can be engaged, and into which open the corresponding contact track or tracks 22, not visible in the figure.

In practice, the only component then served by such an electrical appliance 46 is the cord 47 which connects it electrically to the other, or, more precisely, the electrical conductors constituting this cord 47, these electrical conductors being suitably connected to the one or more contact leads 22 concerned.

For the support of a connection connector according to the invention, there is provided, at the base of the recess 17 of each of the electrical appliances 46, projecting from the stop 44, not visible in the corresponding figure, a tab 49.

By hooks 50 which they present laterally for this purpose, these electrical devices 46 are each suitable for being individually snapped onto an electrical device 10.

Claims (21)

1. Connection connector for an electrical appliance to be snapped onto a mounting rail, characterized in that it comprises a base (16) made of insulating material, which is suitable for being housed under the housings (12) of two successive electrical devices (10A, 10B) between such boxes (12) and the underlying mounting rail (11), being partly engaged in a recess (17A) provided for this purpose in the box (12) of the electrical appliance (10A) and partly in a recess (17B) also provided for this purpose in the housing (12) of the electrical appliance (10B) and, carried by said base (16), at least one connection member metal (20), which, at each of the transverse ends of this base (16), has a contact piece (21) suitable for an electrical connection with a contact track (22) provided for this purpose in the recess (17A , 17B) of the housing (12) of the corresponding electrical appliance (10A, 10B). 2. Connection connector according to claim 1, characterized in that each of the contact parts (21) of said connection member (20) is elastically deformable substantially perpendicular to said base (16). 3. Connection connector according to any one of claims 1, 2, characterized in that said connection member (20) comprises, in one piece, a middle part (23), by which it is subject to base (16), and, each disposed respectively at the ends of said central part (23), two wings, which form the contact parts (21). 4. Connection connector according to claim 3, characterized in that said wings each form an acute angle (V) with the middle part (23) which they frame. 5. Connection connector according to any one of claims 3, 4, characterized in that said wings each extend by a return (24) parallel to themselves. 6. Connection connector according to any one of claims 3 to 5, characterized in that said connection member (20) is a round wire pin. 7. Connection connector according to any one of claims 2 to 6, characterized in that said connection member (20) is housed in a recess (25) of the base (16), which, elongated in the form of a slot , opens onto the surface thereof, and only the contact parts (21) which it forms emerge from this recess (25). 8. Connection connector according to claim 7, characterized in that said recess (25) has three openings, one (32) in its central region, and two, (33), each at its ends respectively. 9. Connection connector according to any one of claims 7, 8, characterized in that, by its central part (23), the connection member (20) is snapped under a hook (35) present for this purpose at bottom of the recess (25) in which it is housed. 10. Connection connector according to any one of claims 1 to 9, characterized in that it comprises, parallel to each other, several connection members (20). 11. Connection connector according to claims 7 and 10, taken together, characterized in that, its base (16) comprising several recesses (25), it is associated, with at least some of said recesses (25), on said base ( 16), a reference (29). 12. Connection connector according to any one of claims 1 to 11, characterized in that, along at least one of its longitudinal sides, its base (16) has, laterally projecting, a tongue (39) . 13. Connection connector according to claim 12, characterized in that said tongue (39) comprises two successive sections (39A, 39B) of different heights, forming, in its median zone, a step (40). 14. Connection connector according to any one of claims 12, 13, characterized in that said tongue (39) extends at the base of the base (16). 15. Connection connector according to any one of claims 1 to 14, characterized in that, for its guidance along the mounting rail (11), the base (16) has, projecting from its lower surface, the along at least one of its longitudinal sides, at least one lug (42). 16. Electric device for snap-on installation on a mounting rail, of the type comprising, in a housing (12, 48), for serving one or more components, at least one contact track (22), characterized in that, for use of a connection connector (15) according to any one of claims 1 to 15, the housing (12) has, at its base, at at least one of its transverse ends, a recess (17, 17A, 17B, 17ʹB), into which opens said contact track (22) and into which can engage said connection connector (15). 17. An electrical appliance according to claim 16, characterized in that the transverse contour of said recess (17, 17A, 17B, 17ʹB) is at least partly in the profile of the base (16) of the connection connector (15), and , in particular, the latter laterally projecting a tongue (39) according to claim 12, it has, laterally, in correspondence, a recess (41, 42ʹ, 42ʺ) whose height corresponds to that of this tongue (39) . 18. An electrical appliance according to claim 17, characterized in that, said tongue (39) comprising, according to claim 13, two successive sections (39A, 39B) of different heights (HA, HB), height (HʹA, HʹB) said lateral recess (41, 42ʹ, 42ʺ) corresponds to one or the other of the latter. 19. An electrical appliance according to any one of claims 16 to 18, characterized in that it is provided, transversely, in its recess, a stop (44) adapted to limit the engagement of a connection connector (15). 20. An electrical appliance according to any one of claims 16 to 19, characterized in that there is provided a recess (17B, 17ʹB) at one and the other of its transverse ends. 21. An electrical appliance according to any one of claims 16 to 20, characterized in that, comprising, in its housing (12, 48), for serving and / or supporting its or its constituents, a printed circuit board (13), this printed circuit board (13) opens into its recess (17, 17A, 17B, 17ʹB) and the corresponding contact track (s) (22) are present on its lower surface.

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