FR3060220A1 - ELECTRICAL CONNECTING ELEMENT, ELECTRICAL CONNECTING TERMINAL COMPRISING SUCH AN ELEMENT AND ELECTRICAL EQUIPMENT THEREFOR - Google Patents

Abstract

The invention relates to an electrical connection element (1) comprising a first part (5) and a second part (6). The first part comprises a plate-shaped main part (51) and a secondary part (52) arranged to define at least partly with the second part (6) a slot (11) for inserting a wire. (2) along an axis of engagement. The second piece (6) has at least one plate-shaped main portion (61) assembled to the main portion (51) of the first piece (5) while being pressed against the main portion (51) of the first piece (5). ) and leaving free the secondary part (52) of the first part (5). An electrical connection terminal comprising such an element and associated electrical equipment are also provided.

Description

Holder (s): LEGRAND FRANCE Public limited company, LEGRAND SNC General partnership.

Extension request (s)

Agent (s): JACOBACCI CORALIS HARLE Simplified joint-stock company.

ELECTRICAL CONNECTION ELEMENT, ELECTRICAL CONNECTION TERMINAL COMPRISING SUCH AN ELEMENT AND RELATED ELECTRICAL APPARATUS.

FR 3 060 220 - A1 (5 /) The invention relates to an electrical connection element (1) comprising a first part (5) and a second part (6). The first part comprises a main part (51) in the form of a plate and a secondary part (52) arranged so as to define at least in part with the second part (6) a slot (11) for inserting an electric wire. (2) along an axis of engagement.

The second part (6) comprises at least one main part (61) in the form of a plate assembled to the main part (51) of the first part (5) by being pressed against the main part (51) of the first part (5 ) and leaving free the secondary part (52) of the first part (5).

An electrical connection terminal comprising such an element and associated electrical equipment are also proposed.

Technical field to which the invention relates

The invention relates generally to electrical terminals, that is to say the terminals which are intended to be housed in electrical equipment such as switches or sockets, and which allow electrical wires to be connected to it.

It relates more particularly to an electrical connection element, an electrical connection terminal comprising such an element and an associated electrical apparatus.

Technological background

Generally, it is planned to connect an electrical apparatus to a current source by three electric wires of phase, neutral and earth.

Such electrical equipment is then equipped with at least three terminals for connecting the three aforementioned wires.

Traditionally, the fixing and connection of a sheathed electrical wire is done using a screw terminal, which consists of a metal strip into which is screwed a screw. This screw is then provided to compress the stripped end of the electrical wire on the metal strip in order to establish the electrical connection.

But there are also so-called insulation piercing terminals which include a metal body in which a slot is made, and a connection lever. These terminals are said to be pierced with insulation in the sense that the tilting of the lever makes it possible to force the wire to engage through the slot so that the edges of the slot cut through the insulating sheath of the electric wire and establish the electrical connection with wire.

In this particular context, we note that there are few terminals with insulation piercing that allow high currents to pass. Indeed, the cutting of the insulation is sometimes random, due to the efforts to which the terminal is subjected to cut the insulating sheath. In addition, as the electrical wires are connected and disconnected, the terminal risks being deformed so that the quality of the electrical connection decreases.

Object of the invention

In this context, the present invention provides an electrical connection element comprising a first part and a second part, the first part comprising a main plate-shaped part and a secondary part arranged so as to define at least partially with the second part. a slot for inserting an electric wire along an axis of engagement, characterized in that the second part comprises at least one main part in the form of a plate assembled to the main part of the first part by being pressed against the main part of the first part and leaving free the secondary part of the first part.

This arrangement makes possible an elastic deformation of the secondary part of the first part relative to the main part of the first part during the insertion of the insulated electrical wire into the slot formed between this secondary part and the second part.

Such elastic deformation can, for example, allow the width of the slot to be adapted to the diameter of the electric wire (and therefore the use of the connection element for electric wires of different diameters). The elastic deformation also makes it possible to maintain a good connection quality despite successive connections and disconnections.

Other non-limiting and advantageous characteristics of the connection element according to the invention are as follows:

- The first part comprises a connecting part from the secondary part of the first part to the main part of the first part;

- Said connecting part forms a bottom of the insertion slot;

- The connecting part is folded around said axis of engagement so that the main part of the first part and the secondary part of the first part are inclined with respect to each other;

- The second part has a tongue extending from the main part of the second part and one edge of which at least partially defines said insertion slot;

- The tongue is arranged in an opening formed between the main part of the first part and the secondary part of the first part;

- The tongue is inclined relative to the main part of the second part;

- The tongue is inclined relative to the secondary part of the first part;

- The first part is made of a first material;

- the second part is made of a second material;

- the first material is different from the second material;

- The second material has an electrical conductivity higher than that of the first material;

- the first material includes stainless steel or steel;

- the second material contains copper.

The invention also provides an electrical connection terminal comprising at least one electrical connection element as defined above, in which the second part is electrically connected to a cell for receiving an electrical connection pin.

The invention finally provides an electrical apparatus comprising an electrical connection element as proposed above or an electrical connection terminal as just indicated. Such electrical equipment, for example an electrical outlet, can be coupled to another electrical equipment, for example an electrical plug, comprising the aforementioned electrical connection pin.

Detailed description of exemplary embodiments

The description which follows with reference to the appended drawings, given by way of nonlimiting examples, will make it clear what the invention consists of and how it can be carried out.

In the accompanying drawings:

FIG. 1 is a schematic perspective view before of a first example of an electrical connection element according to the invention,

FIG. 2 is a schematic rear perspective view of the electrical connection element of FIG. 1,

- Figure 3 is a schematic rear view of the electrical connection element of Figure 1,

- Figure 4 is a schematic view from below of the electrical connection element of Figure 1,

FIG. 5 is a schematic view in straight profile of the connection element in FIG. 1,

FIG. 6 is a schematic front view of the electrical connection element of FIG. 1,

FIG. 7 is a schematic view from above of the electrical connection element of FIG. 1,

FIG. 8 is a schematic view in left profile of the electrical connection element in FIG. 1,

FIG. 9 is a schematic view of the electrical connection element of FIG. 1, with an electric wire approached from the mouth of the slot of this element,

FIG. 10 is a schematic view similar to that of FIG. 9, in which the electric wire is engaged in the proximal part of the slot,

FIG. 11 is a schematic view similar to that of FIG. 9, in which the electric wire is engaged in the intermediate part of the slot,

FIG. 12 is a schematic view similar to that of FIG. 9, in which the electric wire is engaged in the distal part of the slot,

FIG. 13 is a partial schematic perspective view of a connection terminal comprising two connection elements according to the invention,

FIG. 14 is a sectional view of the connection terminal of FIG. 13 along the plane P1,

FIG. 15 is a perspective view of the connection terminal of FIG. 13 complete,

FIG. 16 is a rear view of a second example of an electrical connection element according to the invention,

FIG. 17 is a perspective view of the electrical connection element of FIG. 16, with a sheathed electric wire at the start of its insertion into a slot in the connection element,

- Figure West is a perspective view of the electrical connection element of Figure 16, in which the sheathed electrical wire is inserted into the slot of the connection element,

- Figure 19 is an exploded perspective view of a third example of an electrical connection element according to the invention.

Generally, the electrical connection element 1; 101; 201 according to the invention is an electrical connection element "with insulation piercing" intended to make an electrical connection between an electrical apparatus and an electrical wire 2; 102 comprising a conductive core 4; 104 surrounded by an insulating sheath 3; 103, such as that shown in FIGS. 9 to 12, 17 and 18.

For this purpose, the connection element 1; 101; 201 includes a slot 11; 111; 211 in which the electric wire 2; 102 is inserted (as visible in Figures 9 to 12, 17 and 18).

More specifically, the slot 11; 111; 211 extends along a longitudinal axis X; X ’and electrical wire 2; 102 is inserted in an insertion direction parallel to this longitudinal axis X; X 'of slot 11; 111; 211.

The electric wire 2; 102 extends along a direction substantially perpendicular to the direction of insertion.

When inserting the electric wire 2; 102 in slot 11; 111; 211 of this electrical connection element 1; 101; 201, at least one edge of the slot 11; 111; 211 pierces the insulating sheath 3; 103 of the electric wire 2; 102 (see Figures 10 and 17) and comes into contact with the conductive core 4; 104 of the electric wire 2; 102 (see Figures 11, 12 and 18).

In order to effectively pierce the insulating sheath 3; 103 of the electric wire 2; 102 to expose the conductive core 4; 104 of this electric wire 2; 102, the corresponding edge of the slot 11; 111; 211 must have mechanical characteristics of sufficient rigidity.

In addition, the slot 11; 111; 211 comprises at least one connection edge made of a material having characteristics of electrical conductivity sufficient to allow electrical connection between the conductive core 4; 104 of the electric wire 2; 102 and the connection element 1; 101; 201.

In particular, the slot 11; 111; 211 must allow easy insertion of the electric wire 2; 102 while maintaining sufficient pressure on the conductive core 4; 104 to ensure good electrical contact between the conductive core 4; 104 of the wire and the corresponding connection edge of the slot 11; 111; 211, in order to have the lowest possible contact resistance and avoid overheating.

In Figures 1 to 12 and 16 to 19, there are shown various possible embodiments for the electrical connection element 1; 101; 201 according to the invention. In FIGS. 13 to 15, there is shown a connection terminal 80 comprising two such electrical connection elements, here in accordance with the first embodiment shown in FIGS. 1 to 12. This electrical terminal 80 belongs, for example, to electrical equipment such as A power socket. An electrical connection element according to the invention can however be applied in other types of electrical equipment, such as a switch or an electrical switch. In the latter case, the connection element according to the invention is connected to a contact of the switch (neutral, phase or phase cut).

Connection element 1; 101; 201 makes it possible to connect the electric wire 2; 102 from the network to an electrical component of said apparatus for its power supply.

As previously mentioned, this electrical connection element 1; 101; 201 has a slot 11; 111; 211 of introduction of said electric wire 2; 102 isolated. This slot 11; 111; 211 is delimited between two edges 11 A, 11B; 111 A, 111B; 211 A, 211B of the connection element arranged opposite (Figures 1,2, 6, 16 and 19).

As shown in all of the figures, the electrical connection element 1; 101; 201 according to the invention comprises two parts 5, 6; 105, 106; 205; 206 separate assemblies.

These two parts 5, 6; 105, 106; 205; 206 are preferably made from two different materials. Alternatively, the two parts could however be made of the same material.

A first room 5; 105; 205 is made of a first material having greater hardness and less electrical conductivity than the second material, and a second part 6; 106; 206 is made of this second material, which therefore has less hardness and greater electrical conductivity than the first material.

In practice, the first part 5; 105; 205 is for example made of a metal such as stainless steel or steel; the second part 6; 106; 206 can for its part, for example, be made of copper or a metal alloy containing copper, for example brass.

The hardness of a metal defines its resistance to the penetration of a harder body. It is determined by means of standardized tests by measuring the depth, the diameter or another parameter of the impression made by a punch according to the test.

The first room 5; 105; 205 has a substantially square outline (see in particular Figures 3, 13 and 19).

The first room 5; 105; 205 has a main part 51; 151;

251 and a secondary part 52; 152; 252 planes. The secondary part 52; 152;

252 is connected to the main part 51; 151; 251 by a connecting part, here bent, 53; 153; 253. This connecting part 53; 153; 253 extends parallel to one of the sides of this first part 5; 105; 205 (Figures 6, 16 and 19). This bent connecting part 53; 153; 253 and the secondary part 52; 152; 252 are here folded in the direction of the second part 6; 106; 206, as seen in particular in FIGS. 4,8, 18 and 19.

The main part 51; 151; 251 has a plate shape, here of generally rectangular shape.

The secondary part 52; 152; 252 has an elongated shape: the width of the abutment 52; 152; 252 is less than half (here less than a third) of its length. The secondary part 52; 152; 252 also extends here over the entire length of one side of the main part 51; 151; 251.

The connecting part 53; 153; 153 extends over only part (in practice less than half) of the length of the main part 51; 151; 251. Specifically, the main part 51; 151; 251 has a connecting zone 54; 154; 254 located on the edge of the main part 51; 151; 251, extending over only part (here less than half) of the length of the main part 51; 151; 251 and from which extends the connecting zone 54; 154; 254.

An opening 20; 120; 220 (Figures 2, 3, 13, 16 and 19) is thus provided in this first part 5; 105; 205. As explained in more detail later, this opening 20; 120; 220 partially delimits the slot 11; 111; 211 for the introduction of the electric wire 2; 102 as well as a window 21; 121; 221 (Figures 2, 3, 13 and 16 to 19) in which protrudes a portion of the second part 6; 106; 206.

This opening 20; 120; 220 extends straddling the connecting portion 53; 153; 253, as well as on the main part 51; 151; 251 and the secondary part 52; 152; 252 of the first part 5; 105; 205.

More specifically, window 21; 121; 221 is constituted by the part of the opening 20; 120; 220 extending into main part 51; 151; 251 of the first part 5; 105; 205.

The first room 5; 105; 205 has a thickness (here constant) of for example between 0.2 mm and 0.5 mm, which gives the abutment 52; 152; 252 a certain elasticity relative to the main part 51; 151; 251, used as explained below. The first room 5; 105; 205 is for example produced by cutting a sheet of constant thickness (here comprised between 0.2 mm and 0.5 mm).

The second room 6; 106; 206 has a main part 61; 161; 261 flat, plate-shaped and here having a substantially rectangular outline (Figures 1, 6, 9 to 12 and 19). When the first and second pieces

5, 6; 105, 106; 205, 206 are assembled (as described below), first three sides of the main part 61; 161; 261 of the second part 6; 106; 206 are flush with the three corresponding sides of the main part 51; 151; 251 plane of the first part 5; 105; 205.

From the fourth side of the main part 61; 161; 261 plane of the second part 6; 106; 206 extends a tongue 62; 162; 262 (Figures 1, 4,

6, 8, 9 to 14, 16 and 19) slightly curved, constituting a bent portion of the second part 6; 106; 206. More precisely, this tongue 62; 162; 262 extends in the extension of the main part 61; 161; 261 of the second part 6; 106; 206, from the edge of this main part 61; 161; 261 and is bent towards the first part 5; 105; 205.

The main part 51; 151; 251 of the first part 5; 105; 205 and the main part 61; 161; 261 of the second part 6; 106; 206, which are each in the form of a plate as already indicated and clearly visible in the figures, are applied against each other and are assembled together in a fixed manner.

It can be provided for this purpose, as in the case of the first embodiment shown in Figures 1 to 15, that the first part 5 has a central opening in which protrudes a relief 6A of the second part 6 (see in particular the figures 2, 3, 5, 7, 8).

This relief 6A widens after having crossed the first part 5 so as to wedge the latter. This is for example obtained by stamping the second part 6 to create the relief and riveting of the latter on the first part 5 or by an operation of the snap-fastening type.

Generally, the first and second parts 5, 6; 105, 106;

205, 206 are secured by a link preventing any relative movement of one with respect to the other, it may for example be a fixing by embedding, clinching, grooving, welding, or riveting.

Note however that the second part 6; 106; 206 is shaped so as not to be located in line with the connecting zone 54; 154; 254 of the main part 51; 151; 251 (connection zone 54; 154; 254 from which extends as already indicated the connection part 53; 153; 253).

Thus, no part of the second part 6; 106; 206 does not interact with the aforementioned link area 54; 154; 254, with the connecting part 53; 153; 253 and with the abutment 52; 152; 252 of the first part 5; 105; 205 so that this secondary part 52; 152; 252 is free to deform by elasticity, especially when inserting an electric wire 2; 102 in slot 11; 111; 211 as explained below.

As clearly visible in the figures, the first and second parts 5, 6; 105, 106; 205, 206 are also arranged so that the free end of the tongue 62; 162; 262 extends in window 21; 121; 221 open in the main part 51; 151; 251 of the first part 5; 105; 205.

As shown in particular in FIGS. 6, 9 to 12 and 16, the slot 11; 111; 211 for the introduction of the electric wire 2; 102 is delimited at least in part between these two parts 5, 6; 105, 106; 205, 206. The slot 11; 111; 211 is closed, and extends from a mouth towards a bottom 11C; 111C; 211 C, along the longitudinal axis X; X '(Figures 6 and 16). This longitudinal axis X; X 'is here parallel to two parallel edges of the first part 5; 105; 205.

The connecting part 53; 153; 253 of the first part 5; 105; 205 further extends along this longitudinal axis X; X 'of slot 11; 111; 211, in the extension of the slot 11; 111; 211, and therefore carries the bottom 11C; 111C; 211C latent 11; 111; 211.

In the embodiment described in FIGS. 1 to 15, the slot 11 comprises:

- A proximal part 12, located on the side of its mouth, whose width is reduced towards the bottom of the slot 11 and of which at least one of the edges 12A, 12B is made of said first material (Figures 2, 3, 6 and 9 at 12),

a distal part 13, located on the side of its bottom 11 C, at least one of the edges 13A of which is called the connection edge, is made of the second material (FIGS. 2, 3, 6 and 9 to 12), and

- An intermediate part 14, located between the proximal 12 and distal 13, which here has a constant width (but could alternatively have a slight narrowing of its width towards the bottom 11C of the slot 11), including the two edges 14A , 14B are made of said first material and one of the edges 14A of which extends generally in the extension of said connection edge 13A of the distal part of the slot 11 (FIGS. 2, 3, 6 and 9 to 12).

The slot 11 for introducing the electric wire 2 thus here comprises three proximal 12, intermediate 14 and distal 13 parts, which are successively traversed by the electric wire 2 when the latter is inserted into the slot 11 of the connection element 1 in the direction of insertion parallel to the longitudinal axis X of the slot 11.

Here, the two edges 12A, 12B of the proximal part 12 of the slot 11 belong to the first part 5 of greater hardness.

The edge 12A of the proximal part of the slot 11 belongs to the main part 51 of the first part 5 while the edge 12B of the proximal part of the slot 11 belongs to the secondary part 52 of the first part 5.

Thus, this proximal part of the slot 11 has a rigidity making it possible to easily tear the insulating sheath 3 of the electric wire 2. In addition, the greater hardness of the first material forming the edges 12A, 12B of the proximal part 12 of the slot 11 ensures that this proximal part 12 does not deform during the insertion of the electric wire 2 and does not dull.

In order to facilitate the tearing of the insulating sheath 3 of the electric wire, at least one of the edges 12A, 12B of this proximal part of the slot 11 is preferably a cutting edge. Here, the two edges 12A, 12B of this proximal part 12 are cutting edges.

To this end, in the connection element 1 shown in FIGS. 1 to 12, the edges 12A, 12B of the proximal part 12 of the slot 11 have a shape suitable for tearing the insulating sheath 3 of the electric wire 2 at the passage of this one in the slot. Here, in practice, the width of the proximal portion 12 of the slot 11 is reduced from the mouth towards the bottom 11C of the slot 11, so as to define, at the junction with the intermediate portion 14 of the slot 11, two sharp edges P arranged opposite which facilitate the tearing of the insulating sheath 3 (see FIG. 2).

In addition, the edges 12A, 12B of the proximal part 12 of the slot 11 belonging to two parts of the first part 5 which are inclined between them, these two edges 12A, 12B are also inclined relative to each other , as well as said sharp edges P. This arrangement facilitates the tearing of the insulating sheath 3 of the electric wire 2 as it passes through this part of the slot 11.

As a variant, the edges of this proximal part of the slot may include one or more cutouts facilitating the cutting of the insulating sheath.

In another variant, the thickness itself of the edges of this proximal part can be thin enough to tear off the insulating sheath 3.

The edges 12A, 12B of the proximal part 12 of the slot 11 are thus adapted to pierce the insulating sheath 3 of the electric wire 2 when it is introduced into this slot 11.

The insulating sheath 3 of the electric wire 2 is torn and pushed back upon insertion into the proximal part 12 of the slot 11 (see FIG. 10).

The two edges 14A, 14B of the intermediate part 14 of the slot 11 here extend parallel to each other, starting from said sharp edge P of the proximal part 12 of the slot 11. It is here of the edge of the main part 51 and of the secondary part 52 of the first part 5. As a variant, the two edges 14A, 14B could be slightly inclined relative to one another (by an angular difference less than 5) so that the slot 11 has a slight narrowing of its width towards the bottom 11C as already indicated.

They extend here parallel to the longitudinal axis X of the slot 11, on either side of this axis (see Figure 6).

These two edges 14A, 14B are spaced from each other by a distance calibrated so as to be slightly less than the diameter of the conductive core 4 of the electric wire 2.

This distance also corresponds here to the width of the connecting part 53 of the first part 5.

In other words, the width of the intermediate part 14 of the slot 11, that is to say its transverse dimension relative to the longitudinal axis X of the slot 11, is strictly less than the diameter of the core conductor 4 of the electric wire 2.

In this way, when the electric wire 2 is inserted into this intermediate part 14 of the slot 11, the conductive core 4 of the electric wire 2 is started by the edges 14A, 14B of this intermediate part 14 of the slot 11 (see figure 11).

The conductive core 4 is thus slightly etched on passing through the intermediate part 14 of the slot 11.

The edge 14A of the intermediate part 14 of the slot 11 belonging to the main part 51 of the first part 5 and the edge 14B of the intermediate part 14 of the slot 11 belonging to the secondary part 52 of the first part 5, these two edges 14A, 14B of the intermediate part 14 of the slot 11 are therefore inclined relative to each other. The stripping of the conductive core 4 of the electric wire 2 is thus facilitated.

After passing through the intermediate part 14, the electric wire 2 is inserted into the distal part 13 of the slot 11.

The distal part 13 of the slot 11 is delimited by two edges 13A, 13B, at least one of which, called the connection edge 13A, is made of the second material which has the greatest electrical conductivity.

According to the invention, this connection edge 13A extends in the extension of one of the edges 14A of the intermediate part 14 of the slot 11.

More specifically, the connection edge 13A corresponds to the edge of the free end of the tongue 62 of the second part 6. This is one of the edges of the edge of this tongue 62 (FIG. 14).

This connection edge 13A generally extends in the extension of the edge 14A of the intermediate part 14 in that it extends on the same side of the slot 11 relative to the longitudinal axis X thereof, after the edge 14A of the intermediate part 14 in the direction of insertion of the electric wire 2 (FIG. 14).

This connection edge 13A thus follows the edge 14A of the intermediate part 14 during the insertion of the electric wire 2.

The connecting edge 13A is not necessarily aligned in the plane of the edge of the intermediate part.

Here, the tongue 62 being bent in the window 21 of the first part 5, the edge of the free end of the tongue 62 which forms the connection edge 13A extends in the extension of the edge 14A of the intermediate part 14 This edge here extends in the plane of this edge 14A of the intermediate part 14, that is to say in the plane of the edge of the first part 5 at the opening 20 which forms the intermediate part. 14 of slot 11.

In practice, the edge forming said connection edge 13A extends in the plane of the edge 14A of the intermediate part 14, to within a manufacturing tolerance.

The connection edge can alternatively be slightly offset from the edge of the intermediate part.

Thus, the area of the conductive core 4 started by the edge 14A of the intermediate part 14 of the slot 11 is found in contact with the connection edge 13A of the distal part 13 of the slot 11 when the electric wire 2 is pushed towards the bottom 11C of the slot 11.

This arrangement ensures optimum electrical contact between the conductive core 4 of the electrical wire 2 and the connection edge 13A of the distal part 13 of the slot 11.

The other edge 13B of the distal part 13 of the slot 11 is here formed in the continuity of the edges 12B and 14B of the proximal 12 and intermediate 14 parts of the slot 11.

They together form one of the edges 11B of the slot 11 which is entirely made of the first material. This edge 11B is straight and it consists of the edge of the secondary part 52 of the first part 5.

The other edge 11A of the slot 11 is made, in the proximal 12 and intermediate 14 parts, in the first material, and in the distal part 13, in the second material. It is delimited by the succession of the edge 12A of the proximal part 12, of the edge 14A of the intermediate part 14 and of the connection edge 13A of the distal part. In practice, this is the edge of the main part 51 of the first part 5 in the proximal and intermediate parts and the edge of the tongue 62 beyond the second part 6. This edge 11A of the slot 11 is generally straight and parallel to the edge 11B of the slot 11.

In the embodiments of FIGS. 16 to 19, the edge 111B; 211B of slot 111; 211 is entirely formed by the free edge of the tongue 162; 262 of the second part 106; 206 while edge 111A; 211A of slot 111; 211 is entirely formed by an edge of the abutment 152; 252 of the first part 105; 205.

In the embodiment of FIGS. 16 to 18, the tongue 162 and the secondary part 152 each have a bevel at the mouth of the slot 111 so that the width of the slot 111 decreases (towards the bottom 111C of the slot 111) from a first width at the mouth of the slot 111 to a second width over the rest of the slot 111. This facilitates the initial insertion of the electric wire 102 into the slot 111 and the initiation of a tear in the insulating sheath 103, as shown in FIG. 17.

In the embodiments of Figures 16 to 19, as already indicated, the tongue 162; 262 is inclined relative to the main part 161; 261 of the second part 106; 206 and the abutment 152; 252 of the first part 105; 205 is inclined relative to the main part 151; 251 of the first part 105; 205. As clearly visible in FIGS. 17 and 18, the tongue 162; 262 and the abutment 152; 252 of the first part 105; 205 are inclined relative to each other (and thus form a V in a plane perpendicular to the length of the slot 111; 211).

This arrangement makes it easier to tear the insulating sheath 103 of the electric wire 102 when it is inserted into the slot 111; 211 so that the conductive core 104 of the electric wire 102 is found in contact with each of the edges WA, 111B; 211 A, 211B of slot 111; 211, as clearly visible in Figure 18.

In all the embodiments, in particular because the secondary part 52; 152; 252 of the first part 5; 105; 205 is not connected to the main part 51; 151; 251 of the first part only at the level of the connecting part 53; 153; 253 and is not stiffened (unlike the main part 51; 151; 251 of the first part 5; 105; 205 which is stiffened by the superposition of the main part 61; 161; 261 of the second part 6; 106; 206), the abutment 52; 152; 252 deforms when the electric wire 2 is inserted; 102. This deformation is further facilitated by the fact that neither the connection zone 54; 154; 254 of the main part 51; 151; 251 nor the connecting part 53; 153; 253 are only stiffened (since they do not cooperate with the second part as already indicated).

Specifically, the abutment 52; 152; 252 can be deformed on the one hand (at its region adjoining the connecting part 53; 153; 253) by rotation about an axis parallel to the longitudinal axis X, X ’of the slot 11; 111; 211 and on the other hand by rotation about an axis located in the extension plane of the abutment 52; 152; 252 and perpendicular to the main direction of extension of the abutment 52; 152; 252.

This elastic deformation of the abutment 52; 152; 252 allows electrical wires 2 to be inserted; 102 of different diameters (for example 1.5 mm ² or 2.5 mm ² ) and of different types (multi-strand or rigid), or even to insert several electric wires (in order for example to transplant) while ensuring the functionalities insulation drilling and electrical connection.

The elastic deformation of the abutment 52; 152; 252 also makes it possible to maintain correct operation of the connection terminal even in the event of replacement of the electric wire (a first electric wire being inserted in the slot 11; 111; 211, then removed from the slot 11; 111; 211, and a second electric wire then being inserted into the slot 11; 111; 211).

FIG. 13 shows a partial view of a connection terminal 80 comprising at least one connection element as proposed by the invention, here two connection elements as proposed by the invention (in this case two connection elements 1 according to the first embodiment of the invention presented in Figures 1 to 12).

The second parts 6 of each of the two connection elements 1 of this terminal are integrated into a receiving cell 90 of an electrical connection pin (not shown) of electrical equipment.

This is a circular section connection pin.

This receiving cell 90 is formed by the folding of two wings 91, 92 of a metal strip on either side of a flat bottom 93 of this cell 90, so as to form a cylindrical sleeve adapted to receive the spindle of connection.

The flat bottom 93 of the receiving cell 90 is extended laterally at two opposite ends by a portion folded at right angles so as to form the second pieces 6 of each connection element 1.

The connection element 1 is thus electrically connected to the receiving cell 90 since it has just been formed therewith.

There is shown in Figures 1 to 12, the connection element 1 of this connection terminal 80, isolated therefrom. The connection element 1 shown in FIGS. 1 to 12 then comprises, along one of the sides of the main part 61 of the second part 6, a return 94 which corresponds to the bend in the bottom 93 of the cell of reception 90 connecting the main part 61 of the second part 6 of each connection element 1 to the reception cell 110.

In practice, this return 94 comes from formation with the main part 61 of the second part 6 of the connection element 1 and the receiving cell 90.

As a variant, the geometry of the connection terminal can be different from that of the example shown in FIG. 13 and the return can be placed differently on the main part of the second part of the connection element.

As a further variant, the connection element can be connected in a different way to the receiving cell. It may therefore not include this return.

Finally, FIG. 15 shows the complete connection terminal 80, which includes the receiving cell 90 as well as the two connection elements 1 described above and a spring leaf 85 which encloses the wings 91, 92 of the receiving cell so as to constantly push them towards each other to tighten the connection pin when the latter is introduced into the receiving socket 90 thus defined.

Claims (13)

1. Electrical connection element (1; 101; 201) comprising a first part (5; 105; 205) and a second part (6; 106; 206), the first part comprising a main part (51; 151; 251) in the form of a plate and a secondary part (52; 152; 252) arranged so as to define at least in part with the second part (6; 106; 206) a slot (11; 111; 211) for inserting a electric wire (2; 102) along an axis of engagement (X; X '), characterized in that the second part (6; 106; 206) has at least one main part (61; 161; 261) in the form of plate assembled to the main part (51; 151; 251) of the first part (5; 105; 205) being pressed against the main part (51; 151; 251) of the first part (5; 105; 205) and leaving free the secondary part (52; 152; 252) of the first part (5; 105; 205). 2. An electrical connection element according to claim 1, in which the first part (5; 105; 205) comprises a connecting part (53; 153; 253) of the secondary part (52; 152; 252) of the first part. (5; 105; 205) to the main part (51; 151; 251) of the first part (5; 105; 205), said connecting part (53; 153; 253) forming a bottom of the insertion slot (11; 111; 211). 3. An electrical connection element according to claim 2, in which the connecting part (53; 153; 253) is folded around said axis of engagement so that the main part (51; 151; 251) of the first part (5; 105; 205) and the secondary part (52; 152; 252) of the first part (5; 105; 205) are inclined relative to each other. 4. electrical connection element according to one of claims 1 to 3, wherein the second part (6; 106; 206) has a tongue (62; 162; 262) extending from the main part of the second part (6; 106; 206) and of which an edge (13A; 111B; 211 B) at least partially defines said insertion slot (11; 111; 211). 5. An electrical connection element according to claim 4, in which the tongue (62; 162; 262) is arranged in an opening (20; 120; 220) formed between the main part (51; 151; 251) of the first part. (5; 105; 205) and the secondary part (52; 152; 252) of the first part (6; 106; 206). 6. An electrical connection element according to claim 4 or 5, in which the tongue (62; 162; 262) is inclined relative to the main part (61; 161; 261) of the second part (6; 106; 206) . 7. electrical connection element according to one of claims 4 to 6, wherein the tongue (62; 162; 262) is inclined relative to the secondary part (52; 152; 252) of the first part (5; 105 ; 205). 8. Electrical connection element according to one of claims 1 to 7, in which the first part (5; 105; 205) is made of a first material and in which the second part (6; 106; 206) is made in a second material, the first material being different from the second material. 9. An electrical connection element according to claim 8, in which the second material has an electrical conductivity greater than that of the first material. 10. An electrical connection element according to claim 8 or 9, in which the first material comprises stainless steel or steel, and in which the second material contains copper. 11. Electrical connection terminal (80) comprising at least one electrical connection element (1) according to one of claims 1 to 10, in which the second part (6) is electrically connected to a receiving cell (90) d '' an electrical connection pin. 12. Electrical equipment comprising an electrical connection element (1) according to one of claims 1 to 10. 13. Electrical equipment comprising an electrical connection terminal according to claim 11. 1/5 3/5 51 5 11B 12A 415 5/5 105 154 211A 211 B 211