EP3227966A1

EP3227966A1 - Electrical connection element penetrating an electrical wire insulation sheath

Info

Publication number: EP3227966A1
Application number: EP15817969.7A
Authority: EP
Inventors: François Bardot; Christophe Lequeux; Martin Aumaitre; Olivier Desissard; Loic OSHOWSKI
Original assignee: Legrand SNC; Legrand France SA
Current assignee: Legrand SNC; Legrand France SA
Priority date: 2014-12-05
Filing date: 2015-12-04
Publication date: 2017-10-11
Anticipated expiration: 2035-12-04
Also published as: CN107004965A; CN107004965B; WO2016087799A1; FR3029698A1; ES2861303T3; EP3227966B1; FR3029698B1

Abstract

The invention relates to an electrical connection element (10) penetrating an insulation sheath. Said electrical connection element comprises a first slot (11) and a second slot (21) for inserting at least one insulated electrical wire therethrough, each slot being defined by two edges (11A, 11B, 21A, 21B) facing each other, at least one of which is sharp. Said two edges of each of the first and second slots belong, respectively, to two portions (30, 40) of the connection element. Said portions include a central portion (30), flanked by a peripheral portion (40). The edges defining said first and second slots are formed by the two opposite edges of the central portion and the two facing edges of the peripheral portion. Said central portion is tab-shaped (30A), and said peripheral portion is in the form of a generally U-shaped spring leaf (40A) with a base (41), from which two opposite side flanges (42), flanking said tab, rise. According to the invention, said two portions are separate and made of two materials having different electrical conductivities.

Description

ELECTRICAL CONNECTING ELEMENT HAVING INSULATING SHEATH OF A WIRE

ELECTRIC

TECHNICAL FIELD TO WHICH THE INVENTION RELATES The present invention relates generally to the field of electrical equipment which comprises electrical connection elements called "insulation piercing" for connecting automatically (without tools) said equipment to the son of power supply from the network.

It relates more specifically to an insulating sheath electrical connection element, comprising a first slot and a second insertion slot of at least one insulated electrical wire, each delimited by two facing edges, one of which at least one is cutting, said two edges of each of the first and second slots respectively belonging to two parts of the electrical connection element, comprising a central portion framed by a peripheral portion, the edges delimiting said first and second slots being formed by two opposite edges of the central portion and two edges vis-à-vis the peripheral portion, said central portion being in the form of a tongue and said peripheral portion being in the form of a leaf spring generally shaped U with a base from which rises two opposite side wings flanking said tongue.

It also relates to electrical equipment comprising such an electrical connection element.

The invention finds a particularly advantageous application in the production of electrical terminals of sockets or electrical switching devices such as single switches or back and forth.

BACKGROUND

In general, an "insulating piercing" electrical connection element is intended to provide an electrical connection between electrical equipment and an electrical wire comprising a conductive core surrounded by an insulating sheath.

When inserting the electric wire into the insertion slot of this electrical connection element, the cutting edge of the insertion slot pierces the insulating sheath of the electric wire and comes into contact with the conductive core of the electric wire. The insertion slot of the connection element must thus be sufficiently flexible to allow easy insertion of the electrical wire while maintaining sufficient pressure on the conductive core of the electrical wire to ensure good electrical contact between the stripped core. of the wire and the cutting edge of the insertion slot of the connection element in order to have the lowest possible contact resistance and to avoid overheating.

In addition, this connection element must ensure good transmission of electrical current from the electrical wire thus connected to the electrical operating elements of the equipment provided with this electrical connection element.

Finally, this connection element has a compact form allowing its use in a small space.

Document EP1484818 or document US5330367 discloses such a connection element which however has the drawback of being made entirely of a material having a high electrical conductivity, which makes its manufacture costly.

OBJECT OF THE INVENTION

In order to overcome the aforementioned drawback of the state of the art, the present invention proposes a new electrical connection element in which the quantity of material having a high electrical conductivity is reduced, which makes it particularly economical.

More particularly, it is proposed according to the invention an electrical connection element as described in the introduction, wherein said two parts of this electrical connection element are distinct and made of two materials having different electrical conductivities.

The electrical connection element according to the invention thus allows the establishment of a good quality electrical connection between the conductor wire and that of the two distinct parts of the connection element which is made of the material having the electrical conductivity the higher, while being particularly economical to manufacture.

It also keeps a compact form particularly compact.

Other non-limiting and advantageous features of the connection element according to the invention are the following: said cutting edge belongs to that of the two distinct parts of the electrical connection element which is made of the material having the greatest electrical conductivity;

said first and second slots are arranged side by side, so as to extend along two distinct longitudinal axes;

- The central portion is made of a material having an electrical conductivity greater than that of the material in which the peripheral portion is formed;

each lateral flange of the peripheral portion comprises an amount extending in the direction of the tongue, the free end of each of these uprights forming said edges opposite the peripheral portion of the electrical connection element and the tongue has two longitudinal edges forming said opposite edges of the central portion;

said tongue comprises a functional branch and a support branch, said two longitudinal edges forming said opposite edges of the central part being carried exclusively by said functional branch, and said tongue is integral with said leaf spring exclusively at this support branch; tongue;

- For its solidarity with the leaf spring, said a support leg of the tongue is applied against the base of said leaf spring;

- For its solidarity with the spring blade, said support arm of the tongue is applied against an additional wall of said spring blade which extends from the base of the spring blade between the two lateral wings;

- For its solidarity with the spring blade, said support leg of the tongue comprises two tabs which are adapted to cooperate with two retaining openings of the lateral wings of the spring blade;

- The lateral wings of the peripheral portion are each adapted to pivot about a pivot axis orthogonal or substantially orthogonal to a longitudinal axis of the corresponding slot;

- The lateral wings of the peripheral portion are each adapted to pivot about a pivot axis parallel or substantially parallel to the longitudinal axis of the corresponding slot;

the two edges facing each slot are sharp edges;

one of the two distinct parts of the connection element is produced in an alloy containing copper, while the other of the two separate parts is made of stainless steel or steel;

- There are provided stiffening means of the connecting element which block the transmission of the deformation of one of the lateral wings to the other side wing of the connection element;

said means for stiffening the connection element comprise internal abutment elements against which said lateral wings come to bear when they are deformed towards the inside of the connection element;

said internal stop elements comprise lateral projections extending from the central part of the connection element to the lateral wings of the peripheral part; and,

said stiffening means furthermore comprise external abutment elements limiting the deformation of each lateral flange of the peripheral part towards the outside.

The invention further relates to an electrical apparatus comprising an electrical connection element as described above forming a connection terminal for its connection to an electrical network.

Advantageously, the tab of the connection element forming the connection terminal has a shape defining a receiving cell of an electrical connection pin of another electrical equipment.

DETAILED DESCRIPTION OF AN EXEMPLARY EMBODIMENT The following description with reference to the accompanying drawings, given by way of non-limiting examples, will make it clear what the invention consists of and how it can be implemented.

In the accompanying drawings:

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

FIG. 2 is a diagrammatic front view of the electrical connection element of FIG. 1,

FIG. 3 is a schematic view from above of the electrical connection element of FIG. 1,

FIG. 4 is a diagrammatic perspective view of the electrical connection element of FIG. 1, above which an electric wire is disposed. ready for its introduction in this element,

FIG. 5 is a schematic perspective view of the connection element of FIG. 4 after connection of the electric wire,

FIG. 6 is a schematic front view of the electrical connection element of FIG. 5, the electric wire being shown in section along the plane P of FIG. 7,

FIG. 7 is a schematic view from above of the electrical connection element of FIG. 5;

FIG. 8 is a diagrammatic perspective view of the electrical connection element of FIG. 1, above which two electric wires are arranged before being introduced into this element,

FIG. 9 is a schematic perspective view of the electrical connection element of FIG. 8 after connection of the two electrical wires,

FIG. 10 is a diagrammatic front view of the electrical connection element of FIG. 9, the electric wire being shown in section along the plane N of FIG. 11,

FIG. 11 is a schematic view from above of the electrical connection element of FIG. 9,

FIG. 12 is a diagrammatic perspective view, seen from above, of a second embodiment of the electrical connection element according to the invention,

FIG. 13 is a schematic rear perspective view of the electrical connection element of FIG. 12,

FIG. 14 is a diagrammatic perspective view, seen from below, of the electrical connection element of FIG. 12;

FIG. 15 is a schematic view from above of the electrical connection element of FIG. 12,

FIG. 16 is a diagrammatic front view of the electrical connection element of FIG. 12,

FIG. 17 is a schematic front perspective view of a third embodiment of the connection element according to the invention;

FIG. 18 is a diagrammatic perspective view, seen from below, of the electrical connection element of FIG. 17,

FIG. 19 is a schematic view from above of the element of electrical connection of Figure 17,

FIG. 20 is a schematic bottom view of the electrical connection element of FIG. 17,

FIG. 21 is a schematic side view of the electrical connection element of FIG. 17,

FIG. 22 is a diagrammatic perspective view before a fourth embodiment of the connection element according to the invention,

FIG. 23 is a schematic exploded view of the element of FIG. 22,

FIG. 24 is a diagrammatic perspective view, seen from below, of the electrical connection element of FIG. 22,

FIG. 25 is an exploded schematic view of the electrical connection element of FIG. 24, and

FIG. 26 is a diagrammatic front view of the electrical connection element of FIG. 22,

FIG. 27 is a schematic perspective view of a fifth embodiment of the connection element according to the invention,

FIG. 28 is a schematic front view of the connection element of FIG. 27,

FIG. 29 is a schematic view from above of the connection element of FIG. 27,

FIG. 30 is a diagrammatic front view of the connection element of FIG. 27 with an inserted electric wire seen in section,

FIG. 31 is a schematic front view of the connection element of FIG. 27 with two identical electric wires inserted seen in section,

FIG. 32 is a diagrammatic front view of the connection element of FIG. 27 with two electrical wires of different inserted sections seen in section.

In Figures 1 to 32, there are shown various embodiments of an electrical connection member 10; 1 10; 210; 310; 410 which advantageously constitutes an electrical terminal of an electrical equipment such as a socket or any switch. It allows to connect at least one electrical wire 1, 2, 1A, 2A, 3A from the network to an electrical component of said apparatus for its power supply. Each electrical wire 1, 2, 1A, 2A, 3A shown in FIGS. 4 to 1 1 and 30 to 32 comprises a conductive core 3, 4, 1B, 2B, 3B surrounded by an insulating sheath 5, 6, 1 C, 2C, 3C.

This electrical connection element 10; 1 10; 210; 310; 410 has a first slot 1 1; 1 1 1; 21 1; 31 1; 41 1 introduction of at least a first electrical wire 1; 1A isolated. This slot 1 1; 1 1 1; 21 1; 31 1; 41 1 is delimited between two edges 1 1 A, 1 1 B; 1 1 1A, 1 1 1 B; 21 1 A, 21 1 B; 31 1 A, 31 1 B; 41 1 A, 41 1 B of the connecting element arranged vis-à-vis of which at least one is cutting.

Here is called "cutting edge", an edge defining the slot of the connection element which is adapted to pass through the insulating sheath 5, 6; 1 C, 2C, 3C of the electric wire 1, 2; 1A, 2A, 3A to reach the conductive core 3, 4; 1 B, 2B, 3B of this electrical wire 1, 2; 1A, 2A, 3A.

For this purpose, in the first and fifth embodiments of the connection element 10; 410 shown in Figures 1 to 1 1 and 27 to 32, the cutting edge of the slot 1 1; 41 1 has cutouts 13; 413 which tear the insulating sheath 5 of the electrical wire 1 to the passage thereof in the slot, as explained below.

In the other three embodiments of the connection element 1 10; 210; 310 shown in Figures 12 to 26, the thickness itself of the cutting edge is thin enough to tear the insulating sheath, even in the absence of such cuts.

More particularly, the cutting edge can then be obtained by a striking process: the cutting edge is crushed so as to refine its thickness and facilitate the tearing or cutting of the insulating sheath 5, 6.

The cutting edge defining this first slot 1 1; 41 1 is thus adapted to pierce the insulating sheath 5, 1 C of the first electrical wire 1 when it is introduced into this first slot 1 1; 41 1 so as to come into contact with the conductive core 3; 1B to establish an electrical contact between the latter and said electrical connection element. The electrical connection element 10; 410 is thus a so-called insulation piercing element.

This is more particularly shown in Figures 5 to 7 and 30 to 32, in the case of the first and fifth embodiments. However, the insertion of the electrical wires is similar in the other embodiments.

Remarkably, said two edges 1 1 A, 1 1 B; 1 1 1 A, 1 1 1 B; 21 1A, 21 1B; 31A, 31B; 41 1A, 41 1 B vis-à-vis which delimit the first slot 1 1; 1 1 1; 21 1; 31 1; 41 1 of the electrical connection element 10; 1 10; 210; 310; 410 belong respectively to two parts 30, 40; 130, 140; 230, 240; 330, 340; 430, 440 separate from the electrical connection element 10; 1 10; 210; 310, 410 made of two materials having different electrical conductivities.

Preferably, one 30; 130; 230; 330; 430 of these two parts 30, 40; 130, 140; 230, 240; 330, 340; 430, 440 of the electrical connection member 10; 1 10; 210; 310; 410 is made of a material having a high electrical conductivity, while the other 40; 140; 240; 340; 440 of these two parts 30, 40; 130, 140; 230, 240; 330, 340; 430, 440 is made of a material having a low electrical conductivity.

For example, part 30; 130; 230; 330; 430 having the highest electrical conductivity, is made of copper or an alloy containing copper, preferably brass, while the other 40; 140; 240; 340; 440 is made of stainless steel, steel or any other metal alloy with sufficient flexibility.

It is thus possible to optimize the electrical performance of the chosen material having the highest electrical conductivity, so as to ensure satisfactory conduction of electricity between each electric wire 1, 2; 1A, 2A, 3A introduced into the electrical connection element 10; 1 10; 210; 310; 410 and this, at a lower cost because the volume of this material used is limited.

In addition, as will be explained later, it is possible to optimize the mechanical performance of the material having the lowest electrical conductivity, so as to facilitate the introduction of each wire 1, 2; 1A, 2A, 3A in the electrical connection element 10; 1 10; 210; 310; 410 and to ensure good contact between this electric wire 1, 2; 1A, 2A, 3A and the portion of the electrical connection element 10; 1 10; 210; 310; 410 made in the material having the highest electrical conductivity.

Advantageously, the edge 1 1A; 1 1 1A; 21 1A; 31 1 A; 41 1A (Figures 1,

2, 12, 22, 27 to 29) which delimits the slot 1 1; 1 1 1; 21 1; 31 1; 41 1 belongs to that 30; 130; 230; 330; 430 of the two separate parts of the electrical connection element which is made of the material having the highest electrical conductivity. This makes it possible to establish an electrical contact satisfactory between the electrical connection element and the conductive core of the electrical wire.

As explained in more detail later, the cutting edge 11A; 1 1 1A; 21 1A; 31 1A; 41 1 A of the first slot 1 1; 1 1 1; 21 1; 31 1; 41 1 cuts the insulating sheath 5, 1 C of the electric wire 1; 1A when it is introduced into this first slot 1 1; 1 1 1; 21 1; 31 1; 41 1.

According to the various embodiments shown here, the electrical connection element 10; 1 10; 210; 310; 410 has two slots 1 1, 21; 11, 121; 21, 221; 31, 321; 41 1, 421 separate to each accommodate an electrical wire 1, 2; 1A, 2A, 3A, one of the electrical wires 1, 2; 1A, 2A, 3A coming directly from the network and the other being intended to establish the connection of said electrical connection element with another electrical connection element.

This connection element 10; 1 10; 210; 310; 410 then advantageously constitutes an electrical connection terminal for establishing an electrical connection between two electrical wires 1, 2; 1A, 2A, 3A (Figures 4 to 1 1 and 30 to 32). With such a terminal can be connected in series two electrical devices to the power grid.

The second slot 21; 121; 221; 321; 421 is identical to the first slot 1 1; 1 1 1; 21 1; 31 1; 41 1 in the sense that it is delimited by two other edges 21 A, 21 B; 121A, 121B; 221 A, 221 B; 321 A, 321 B; 421 A, 421 B vis-à-vis the electrical connection element 10; 1 10; 210; 310; 410 one of which is a sharp edge.

The first and second slots 11, 21; 11, 121; 21, 221; 31, 321; 41 1, 421 are distinct in that they can each deform without the other being deformed. At least one of the edges 1 1 B; 1 1 1 B; 21 1 B; 31 1 B; 41 1 B of the first slot 1 1 is adapted to move independently of the edges 21 A, 21 B; 121A, 121B; 221 A, 221 B; 321 A, 321 B; 421 A, 421 B of the second slot 21; 121; 221; 321; 421. Similarly, at least one of the edges 21 B; 121 B; 221 B; 321 B; 421 B of the second slot 21; 121; 221; 321; 421 is adapted to move independently of the edges 1 1 A, 1 1 B; 1 1 1 A, 1 1 1 B; 21 1 A, 21 1 B; 31 1 A, 31 1 B; 41 1 A, 41 1 B of the first slot 1 1; 1 1 1; 21 1; 31 1; 41 1.

Among the edges of the first and second slots 1 1, 21; 11, 121; 21, 221; 31, 321; 41 1, 421, there are at least two, each belonging to a slot 1 1, 21; 11, 121; 21, 221; 31, 321; 41 1, 421 different, which are discontinuous, that is to say do not extend in the continuity of one another.

More specifically here, said first 11; 111; 211; 311; 411 and second 21; 121; 221; 321; 421 slots are arranged side by side, so as to extend along two longitudinal axes X1, X2; X11, X12; X21, X22; X31, X32; X41, X42 distinct. These longitudinal axes X1, X2; X11, X12; X21, X22; X31, X32; X41, X42 are here parallel, as shown in Figures 2, 16, 17, 22 and 28.

In the case of the first, second and third embodiments, the edges of each slot 11, 21; 111, 121; 211, 221 are parallel to each other and extend along the longitudinal axis X1, X2; X11, X12; X21, X22 of the corresponding slot.

In the case of the fourth and fifth embodiments in which the edges of each slot 311, 321; 411, 421 form between them a slight angle, the longitudinal axes X31, X32; X41, X42 of the two slots 311, 321; 411, 421 are parallel to this angle.

Concretely, the electrical connection element 10; 110; 210; 310; 410 is formed by assembling said two parts 30, 40; 130, 140; 230, 240; 330, 340; 430, 440 separate.

It comprises a central portion 30; 130; 230; 330; 430 and a peripheral portion 40; 140; 240; 340; 440 which frames the central portion 30; 130; 230; 330: 430.

Said first 11; 111; 211; 311; 411 and second 21; 121; 221; 321; 421 slots are delimited respectively between two edges 11A, 21A; 111A, 121A; 211A, 221A; 311A, 321A; 411 A, 421 A opposite this central portion 30; 130; 230; 330; 430 and two edges 11 B, 21 B; 111B, 121B; 211 B, 221 B; 311 B, 321 B; 411 B, 421 B facing this peripheral portion 40; 140; 240; 340; 440.

The different embodiments shown in the figures are distinguished by the shape and the relative arrangement of the central and peripheral parts of the connection element.

Whatever the embodiment considered, the central portion 30; 130; 230; 330; 430 is in the form of a tab 30A; 130A; 230A; 330A; 430A with an elongated shape. This tongue 30A; 130A; 230A; 330A; 430A, and thus the central portion 30; 130; 230; 330; 430 have a support branch 31; 131; 231; 331; 431 and a functional branch 32; 132; 232; 332; 432.

The functional branch 32; 132; 232; 332; 432 has longitudinal edges which constitute said opposite edges of said central portion 30; 130; 230; 330; 430 of the electrical connection element 10; 1 10; 210; 310; 410 which form respectively a 1 1A; 1 1 1 A; 21 1A; 31 1 A; 41 1 At edges 1 1 A, 1 1 B; 1 1 1 A, 1 1 1 B; 21A, 21B, 31A, 31B; 41 1 A, 41 1 B of the first slot 1 1; 1 1 1; 21 1; 31 1; 41 1 and one 21 A; 121A; 221 A; 321 A; 421 has edges 21A, 21B; 121A, 121B; 221A, 221B; 321A, 321B; 421A, 421B of the second slot 21; 121; 221; 321; 421.

These edges 1 1 A, 21 A; 11A, 121A; 21 1A, 221A; 31 1A, 321A; 41 1A, 421 A opposite the central portion 30; 130; 230; 330, 430 are exclusively carried by the functional branch 32; 132; 232; 332; 432. The edges of the support arm 31; 131; 231; 331; 431 do not participate in the delimitation of the slots of the connection element.

In the first, second and fifth embodiments shown in FIGS. 1 to 16 and 27 to 32, the tab 30A; 130A; 430A is folded L-shaped, the branches of this L defining the support arm 31; 131; 431 and the functional branch 32; 132; 432.

In the third embodiment, shown in Figures 17 to 21, the functional branch 232 of the tongue 230A is formed by the folding at an acute angle of one end of the tongue 230A. It is similar to the functional branch of the first and second embodiments.

The support branch 231 here has a more complex shape. It comprises a flat portion 231 A adjacent to the functional branch 232 and a curved portion 231 B whose free end 231 C passes through a window 234 of the flat portion 231 A (see Figure 18).

This particular shape makes it possible to define, at the level of the window 234 of the tongue 230A, a receptacle for receiving an electrical connection pin (not shown) of an electrical apparatus (FIGS. 19 and 20). This is a connection pin of rectangular or circular section. The bent portion 231 B of the tongue 230A establishes the electrical contact between the receiving cell of the electrical connection element 210 and this connection pin.

In the fourth embodiment, shown in FIGS. 26, the functional branch 332 is formed by the folding at a right angle of one end of the tongue 330A. It is similar to the functional branch of the first, second and third embodiments.

The support branch 331 also has a complex shape. It comprises a base 331 A adjacent to the functional branch 332 and a rear portion 331 B which extends parallel to the functional branch 332, on the same side of the base 331A as this functional branch 332. The free end 331 C of the rear portion 331 B forms a return to the functional branch 332 and extends parallel to the base 331 A (see Figures 23 and 25) of the support leg 331.

Whatever the embodiment considered, the two support branches 31; 131; 231; 331; 431 and functional 32; 132; 232; 332; 432 of the central portion 30; 130; 230; 330; 430 are connected continuously by a bend 33; 133; 233; 333; 433 (Figures 1, 4, 8, 12, 14, 16, 18, 23, 26 and 27).

The tongue 30A; 130A; 230A; 330A; 430A constituting the central portion 30; 130; 230; 330; 430 is thick and rigid so that it does not deform easily (at least it does not deform when introducing a wire into one of the two slots). This central portion 30; 130; 230; 330; 430 is made of the material having the highest electrical conductivity, preferably of brass.

The edge 1 1 A; 1 1 1A; 21 1A; 31 1 A; 41 1 A of the first slot 1 1; 1 1 1; 21 1; 31 1; 41 1 and the edge 21 A; 121A; 221 A; 321 A; 421 A of the second slot 21; 121; 221; 321; 421 formed by the longitudinal edges of the functional branch 32; 132; 232; 332; 432 of the central portion 30; 130; 230; 330; 430 are here sharp, that is to say adapted to pass through the insulating sheath of the electric wire to establish electrical contact with the conductive core of the electric wire.

As mentioned above, this cutting edge may comprise cutouts (in the case of the first and fifth embodiments) and / or be made sharp by a striking process (in the case of the other embodiments).

In the latter case, the thickness of the cutting edge is for example refined from a thickness between 0.5 and 0.6 millimeters corresponding to the thickness in the center of the tongue 30A; 130A; 230A; 330A; 430A to reach the thickness of 0.3 millimeter. Thus, the cutting edge of the tongue has a thickness similar to that of the edge of the slot formed by the peripheral portion, as explained below.

The cutting edge can also be sharp because of its small original thickness.

The peripheral portion 40; 140; 240; 340; 440 is a spring blade 40A; 140A; 240A; 340A; 440A generally U-shaped. It comprises a base 41; 141; 241; 341; 441 from which rise two lateral wings 42; 142; 242; 342; 442 arranged vis-à-vis. The lateral wings 42; 142; 242; 342; 442 frame functional branch 32; 132; 232; 332; 432 of the central portion 30; 130; 230; 330; 430 of the electrical connection element 10; 1 10; 210; 310; 410 (Figures 1, 4 and 8, 12, 17, 22 and 27 in particular).

In the first, second, fourth and fifth embodiments, the lateral wings 42; 142; 342; 442 are connected to the base 41, 141, 341; 441 bends adapted to deform elastically to form pivot hinges so that, as will be described in more detail later, the introduction of an electric wire 1, 2; 1A, 2A, 3A in one of the slots 1 1, 21; 11, 121; 31, 321; 41 1, 421 of the electrical connection element 10; 1 10; 310; 410, causes the separation of the lateral wing 42; 142; 342; 442 of the functional branch 32; 132; 332; 432 of the central portion 30; 130; 330; 430 (FIGS. 6, 10 and 30 to 32).

The spacing of the lateral wings 42; 142; 342; 442 is not done in the same way according to the embodiment considered, as will be described in more detail later.

In the third embodiment of Figures 17 to 21, the base 241 has a curved shape. This base 241 and the lateral wings 242 are also adapted to deform elastically to allow the introduction of the electric wire 1, 2 in one of the slots 21 1, 221, as will be described in more detail later.

Whatever the embodiment, each side wing 42; 142; 242;

342; 442 of the leaf spring 40A; 140A; 240A; 340A; 440A has a main portion 44; 144; 244; 344; 444 from which an amount 43 extends; 143; 243; 343; 443 towards the functional branch 32; 132; 232; 332; 432 of the central portion 30; 130; 230; 330; 430 of the connection element electrical 10; 1 10; 210; 310; 410.

The amount 43; 143; 243; 343; 443 of each side wing 42; 142; 242; 342; 442 is in the sense that it forms a bend from the main portion 44; 144; 244; 344; 444, to go to the functional branch 32; 132; 232; 332; 432 of the central portion 30; 130; 230; 330; 430 (see in particular FIGS. 3, 7, 11, 12, 17, 22 and 27).

In the first, second, fourth and fifth embodiments, apart from any deformation due to the insertion of an electrical wire into one of the slots of the connection element, the main portion 44; 144; 344; 444 of each side wing 42; 142; 342; 442 of the peripheral portion 40; 140; 340; 440 of the electrical connection element 10; 1 10; 310; 410 extends substantially orthogonally to the base 41; 141; 341; 441 of this peripheral portion 40; 140; 340; 440 and also substantially orthogonal to the main faces of the functional branch 32; 132; 332; 432 of the central portion 30; 130; 330; 430 of the electrical connection element. The main parts 44; 144; 344; 444 of the lateral wings 42; 142; 342; 442 are parallel.

In the third embodiment of the connection element 210, the main portion 244 of each lateral flange 242 of the peripheral portion 240 of the electrical connection element 210 extends substantially orthogonal to the main faces of the functional branch 232 of the central portion 230 of the electrical connection element. The main portions 244 of the lateral wings 242 are parallel.

In the first, second, third and fourth embodiments, outside the bend formed by each upright, it extends perpendicularly to the main portion 44; 144; 244; 344 of the lateral wing 42; 142; 242; 342 corresponding. It thus extends in a mean plane coincides with the average plane of the functional branch 32; 132; 232; 332 of the central portion 30; 130; 230; 330 of the electrical connection element 10; 1 10; 210; 310 (Figures 7, 15, 19 and 22). Each amount 43; 143; 243; 343 is here formed by the folding of a portion of the lateral wing 42; 142; 242; 342 corresponding.

In the fifth embodiment, the uprights 443 extend obliquely towards each other and towards the inside of the peripheral portion 440.

These amounts 443 are here obtained by the realization of a flat in the main portion 444 of each side wing 442.

The free edge of each of these amounts 43; 143; 243; 343; 443 extends opposite one of the longitudinal edges of the functional branch 32; 132; 232; 332; 432 of the central portion 30; 130; 230; 330; 430 of the electrical connection element 10; 110; 210; 310; 410.

These free edges of the uprights 43; 143; 243; 343; 443 constitute said edges facing the peripheral portion 40; 140; 240; 340; 440 of the electrical connection element 10; 110; 210; 310; 410 which respectively form the other edge 11 B; 111 B; 211 B; 311 B; 411 B of the first slot 11; 111; 211; 311; 411 and the other edge 21B; 121B; 221B; 321B; 421B of the second slot 21; 121; 221; 321; 421.

They are here also cutting.

They have for example cutouts 13, 23; 413, 423, as in the first and fifth embodiments, and / or a very thin thickness giving them a sharp character. This thickness may be for example the initial thickness of the stainless steel sheet used to manufacture the spring blade. This thickness is for example about 0.4 millimeter.

Thus, they delimit, with said opposite longitudinal edges of the functional branch 32; 132; 232; 332; 432 of the central portion 30; 130; 230; 330; 430 of the electrical connection element 10; 110; 210; 310; 410, the first 11; 111; 211; 311; 411 and second 21; 121; 221; 321; 421 introduction slots of this electrical connection element 10; 110; 210; 310; 410.

Each first and second slot 11, 21; 111, 121; 211, 221; 311

321; 411, 421 opens on one side on a mouth 11 C, 21 C; 111 C, 121 C; 211C, 221C; 311C, 321 C; 411C, 421 C of access for the electric wire 1, 2 (see in particular Figures 1, 2, 4, 5, 6, 8, 9, 10, 13, 14, 17, 18, 22, 24 and 28).

More specifically, here, the first and second slots 11, 21; 111, 121;

211, 221; 311, 321; 411, 421 each have a mouth 11C, 21 C;

111C, 121C; 211C, 221C; 311C, 321 C; 411C, 421 C V profile, extended by an inner portion 14, 24; 114, 124; 214, 224; 314, 324; 414, 424 (figures

1, 2, 4, 8, 16, 17, 26 and 28) along which edges 11A, 11B, 21A, 21B;

111A, 111B, 121A, 121B; 211A, 211B, 221A, 221B of the slot 11, 21; 111, 121;

211, 221 are parallel (first, second and third embodiments), or along which edges 311A, 311B, 321A, 321B of each slot 311, 321 between them an angle such that the width of the corresponding slot decreases in the direction of insertion of the electric wire (fourth embodiment, see Figure 26) or along which the edges 41 1 A, 41 1 B, 421 A , 421 B of each slot 41 1, 421 form between them an angle such that the width of the corresponding slot increases in the direction of insertion of the electric wire (fifth embodiment, see Figure 28).

The edges of the slots of the connection element are here considered in their rest position, that is to say in the absence of any electrical wire inserted in these slots.

In the first and fifth embodiments of the electrical connection element, at the junction between the mouth 1 1 C, 21 C; 41 1 C, 421 C and the inner portion 14, 24; 414, 424 of each slot 1 1, 21; 41 1, 421, the edges 1 1 A, 1 1 B, 21 A, 21 B; 41 1 A, 41 1 B, 421 A, 421 B of each slot 1 1, 21; 41 1, 421 are provided with cutouts 13, 23; 413, 423 (Figures 1 and 2) facilitating the drilling of the electric wire when it is introduced into the corresponding slot.

In the other embodiments, the cutting edges 1 1 1 A, 1 1 1 B, 121A, 121 B; 21A, 21B, 221A, 221B; 31A, 31B, 321A, 321B slots 1 1 1, 121; 21, 221; 31 1, 321 has a reduction of their thickness over all or part of their length, so as to facilitate the drilling of the electrical wires.

Alternatively, it can be envisaged that the edges of each slot each have a cutting zone and a non-cutting zone.

For example, the edge of the mouth of each slot located on the central part of the connecting element is sharp, for example with cuts, and the edge of the inner part of the slot located on the central part is not cutting.

In contrast, the edge of the mouth of each slot on the peripheral portion of the connecting member is not sharp and the edge of the inner portion of the slot on the peripheral portion is sharp.

In this way, when the electric wire is introduced into the mouth of the slot, the peripheral part of the connection element pushes the electric wire against the cutting central part, then, when the electric wire is introduced into the inner part of the the slot is the central part that pushes the electric wire against the cutting peripheral part.

Thus, the two parts, central and peripheral, cross in turn the insulating sheath of the electrical wire to contact the conductive core of the electrical wire. The electrical contact is then established in a particularly reliable manner.

Whatever the embodiment of the electrical connection element envisaged, from a mechanical point of view, the central portion 30; 130; 230; 330; 430 has a much greater rigidity than the peripheral portion 40; 140; 240; 340; 440 of the electrical connection element 10; 1 10; 210; 310; 410. The peripheral portion 40; 140; 240; 340; 440 of the electrical connection element 10; 1 10; 210; 310; 410 is adapted to deform during the introduction of the electrical son 1, 2; 1A, 2A, 3A in the first and second slots 1 1, 21; 11, 121; 21, 221; 31, 321; 41 1, 421 while the central portion 30; 130; 230; 330; 430 does not deform.

In general, the central portion 30; 130; 230; 330; 430 is secured to the peripheral portion 40; 140; 240; 340; 440.

More specifically, said tongue 30A; 130A; 230A; 330A; 430A is secured to said leaf spring 40A; 140A; 240A; 340A; 440A exclusively at the support leg 31; 131; 231; 331; 431 of the tongue.

In the first, fourth and fifth embodiments, the central portion 30; 330; 430 of the electrical connection element 10; 310; 410 is secured to the base 41, 341; 441 of the peripheral portion 40; 340; 440 exclusively at the support leg 31; 331; 431 of this central portion 30; 330; 430. The lateral wings 42; 342 442 of the peripheral part

40; 340; 440 are each adapted to pivot about a pivot axis P1, P2; P31, P32; P41, P42 orthogonal or substantially orthogonal to the longitudinal axis X1, X2; X31, X32; X41, X42 of slot 1 1, 21; 31, 321; 41 1, 421 corresponding (Figures 1, 22 and 28).

More specifically, in the first and fifth embodiments, the support arm 31; 431 of the central part 30 is in contact with the base

41; 441 of the peripheral portion 40; 440. The functional branch 32; 432 of the central portion 30; 430 then rises from this base 41; 441 of the peripheral portion 40; 440, on the same side of this base 41; 441 as the side wings

42; 442 of the peripheral portion 40; 440. The base 41; 441 of the peripheral portion 40; 440 is near the elbow 33; 433 connecting the functional branch 32; 432 to the support arm 31; 431. In the fourth embodiment, the situation is different because the orientation of the U-shaped peripheral portion 340 with respect to the functional branch 332 of the central portion 330 is reversed.

Here, it is the free end 331 C of the rear portion 331 B of the support leg 331 of the central portion 330 which is in contact with the base 341 of the peripheral portion 340. In this case, the base 341 of the peripheral portion 340 extends near the free end of the functional branch 332 of the central portion 330. The base 341 does not cover the free end of the functional branch 332. On the contrary, it extends in withdrawal of this free end, so as to leave free access to the slots 31 1, 321.

The securing of the central and peripheral parts is here achieved by a link prohibiting any relative movement of the central portion 30; 330; 430 and the peripheral portion 40; 340; 440. It may be for example a fixation by embedding, clinching, trimming, welding, or riveting.

Thus, advantageously, the lateral wings 42; 342; 442 of the peripheral portion 40; 340; 440 of the electrical connection element 10; 310; 410 are mechanically independent of the functional branch 32; 332; 432 of the central portion 30; 330; 430.

They are each adapted to pivot about the pivot axis P1, P2; P31, P32; P41, P42 orthogonal to the longitudinal axis X1, X2; X31, X32; X41, X 42 of the slot 1 1, 21; 31, 321; 41 1, 421 corresponding, thanks to the elbow connecting the side wing to the base of the peripheral portion.

In the case of the fourth and fifth embodiments, the pivot axis P31, P32; P41, P42 is orthogonal to the longitudinal axis X31; X32; X41, X42 of the corresponding slot, at the angle between the edges of this slot.

As a result, when an electric wire 1 is introduced into the first slot 1 1; 31 1; 41 1 (Figures 4 to 7), only the edge 1 1 B, 31 1 B; 41 1 B of this first slot 1 1; 31 1; 41 1 belonging to the peripheral portion 40; 340; 440 of the electrical connection element 10; 310; 410 moves to allow the insertion of the electric wire (the other edge 1 1A; 31 1 A; 41 1 A belonging to the central portion 30; 330; 430 does not move).

In doing so, the first slot 1 1; 31 1; 41 1 corresponding introduction opens, without affecting the opening of the second slot 21; 321; 421 who remains in its initial state. This is particularly noticeable in Figure 6 for the first embodiment and in Figure 30 for the fifth embodiment.

In the first embodiment, the electric wire 1, 2 is introduced at the mouth 1 1 C, 21 C of one of the slots 1 1, 21 which is located closest to the free end of the lateral wings 42 of the peripheral portion 40. This free end of the lateral wings 42 being located as far as possible from the elbow connecting the lateral flange 42 and the base 41 of the peripheral portion 40, the electric wire 1, 2 is introduced on the side of the slot 1 1, 21 where the lateral flange 42 is the easiest to deviate from the central portion 30. The insertion of the electric wire is facilitated.

In this configuration, the more the electrical wire 1, 2 is driven into the slot of the connection element, the greater the stress exerted by the edges of the slot on the electric wire is large, because the edges of each slot are here parallel.

In order to prevent the deformation of the lateral flanges 442 of the connection element 410 from becoming plastic and therefore irreversible, which may be the case when inserting a large-diameter electrical wire, it is provided in FIG. fifth embodiment that the edges of each slot 41 1, 421 are not parallel, but inclined towards each other so that they are closest to the mouth 41 1 C, 421 C each slot, and move away from each other in the direction of insertion of the electric wire into the slot 41 1, 421.

Thus, the stress exerted by the edges of the slot 41 1, 421 on the electric wire 1A, 2A, 3A, and vice versa, the stress exerted by the electric wire 1A, 2A, 3A on the edges of the slot 41 1; 421 is limited when the electric wire is inserted into the slot, even for a large diameter electrical wire, for example with a diameter greater than 2.5 millimeters.

In the fourth embodiment, on the contrary, the electric wire 1, 2 is introduced at the mouth 31 1 C, 321 C of one of the slots 31 1, 321 which is located furthest from the free end of the side wings 342 of the peripheral portion 340, that is to say, the closest to the elbow connecting the lateral flange 342 and the base 341 of the peripheral portion 340. The electric wire 1, 2 is introduced on the side of the slot 31 1, 321 where the lateral flange 342 is the most difficult to separate from the central portion 330. The drilling or tearing of the insulating sheath of the electric wire is thus facilitated. Moreover, the edges of the slot 31 1, 321 form here a light angle between them, so that the inner portion 314, 324 of the slot 31 1, 321 is slightly wider at the junction with the mouth 31 1 C, 321 C of the slot. The insertion of the electric wire is thus facilitated.

When introducing a second electrical wire 2 into the second slot 21; 321; 421, only the edge 21 B; 321 B; 421 B of this second slot 21; 321; 421 belonging to the peripheral portion 40; 340; 440 of the electrical connection element 10; 310; 410 moves to allow the insertion of the electrical wire (the other edge 21A; 321A; 421A belonging to the central portion

30 ; 330; 430 does not move). In doing so, the second slot 21; 321; 421 corresponding opens, without affecting the opening of the first slot 1 1;

31 1; 41 1. The connection established between the electrical wire 1; 1A and the electrical connection element by the insertion thereof into the first slot 1 1; 31 1 is thus not disturbed. This is particularly clearly visible in FIGS.

31 and 32.

In the second and third embodiments, the central portion

130; 230 of the electrical connection element 1 10; 210 is not secured to the base 141; 241 of the peripheral portion 140; 240. The lateral wings 142, 242 of the peripheral portion 140; 240 are each adapted to pivot about a pivot axis P1 1, P12; P21, P22 parallel to the longitudinal axis X1 1, X12; X21, X22 of the slit 111, 121; 21 1, 221 corresponding.

In this configuration, the stress exerted by the edges of the slot on the electrical wire does not depend on the insertion distance of the electric wire along the slot. This stress remains constant regardless of the position of the electric wire in the slot of the connection element.

More specifically, in the second embodiment of the connection element 1 10 according to the invention, the peripheral portion 140 comprises an additional wall 150 (Figures 14, 15), which extends from the base 141, perpendicularly to it, between the two lateral wings 142. This additional wall 150 is distinct from the lateral wings 142 and is connected thereto only through the base 141. It also extends perpendicular to the lateral wings 142.

Here, the central portion 130 of the electrical connection element 1 10 is secured to the additional wall 150 exclusively at the level of the support branch of this central portion 130. More specifically, the support leg 131 of the central portion 130 is in contact with the additional wall 150 of the peripheral portion 140. Here, the functional branch 132 of the central portion 130 then rises from this additional wall 150 of the part peripheral 140, the side wings side 142 of the peripheral portion.

The securing of the central and peripheral parts is also achieved by a link prohibiting any relative movement of the central portion 130 and the peripheral portion 140. It may be for example a fixing by embedding, clinching, trimming, welding, or riveting.

Thus, advantageously, the lateral wings 142 of the peripheral portion

140 of the electrical connection element 1 10 are mechanically independent of the functional branch 132 of the central portion 130. They are each adapted to pivot about the pivot axis P1 1, P12 parallel to the longitudinal axis X1 1, X12 of the slot 1 1 1, 121 corresponding, thanks to the elbow connecting the lateral flange 142 to the base 141 of the peripheral portion 140.

Finally, in the third embodiment, the central portion 230 of the electrical connection element 210 is secured to the side walls 242 of the peripheral portion 240 exclusively at the support branch of this central portion 230.

More specifically, here the tongue 230A forming the central portion 230 comprises, along the longitudinal edges of the flat portion 231 A of the support leg 231, two flanges 235 which skirt, without touching them, the lateral flanges 242 of the peripheral portion 240. The end of this flange 235 closest to the base 241 of the peripheral portion 240 has a tab 236 (FIGS. 17, 18) which is applied against the lateral flange 242 adjacent to the peripheral portion 240 and is provided with cooperation means with an opening 246 of this adjacent lateral flange 242 for securing the central and peripheral parts of the connecting element 210.

The support leg 231 of the central portion 230 is here in contact with the lateral wings 242 at the tabs 236.

Advantageously, as in the other embodiments, the lateral flanges 242 of the peripheral portion 240 of the electrical connection element 210 are mechanically independent of the functional branch 232 of the central portion 230. They are each adapted to pivot about a pivot axis P21, P22 (FIGS. 17, 22) parallel to the longitudinal axis X21, X22 of the corresponding slot 21 1, 221, thanks to the cooperation of the tab 236 of the central portion 230 and the opening 246 of the peripheral part 240.

Accordingly, in the second and third embodiments, when an electrical wire 1 is introduced into the first slot 1 1 1; 21 1, only the edge 1 1 1 B; 21 1 B of this first slot 1 1 1; 21 1 belonging to the peripheral portion 140; 240 of the electrical connection element 1 10; 210 moves to allow the insertion of the electric wire (the other edge 1 1 1 A; 21 1A belonging to the central portion 130; 230 does not move). In doing so, the first slot 1 1 1; 21 1 introduction opens, without affecting the opening of the second slot 121; 221 which remains in its original position.

When introducing a second electrical wire 2 into the second slot 121; 221, only the edge 121 B; 221 B of this second slot 121; 221 belonging to the peripheral portion 140; 240 of the electrical connection element 1 10; 210 moves to allow the insertion of the electrical wire (the other edge 121 A; 221 A belonging to the central portion 130; 230 does not move). In doing so, the second slot 121; 221 corresponding opens, without affecting the opening of the first slot 1 1 1, 121. The connection established between the electric wire 1 and the connection element 1 10; 210 electrical by the insertion thereof in the first slot 1 1 1; 21 1 is not disturbed.

Whatever the embodiment of the connection element according to the invention, it is therefore possible to connect the two electrical son 1, 2 successively, without the connection of the second wire disturbs the connection of the first wire, as the show Figures 6 and 10 for the first embodiment.

This is also made possible by stiffening means of the connection element 10; 1 10; 210; 310; 410. These stiffening means block the transmission of the deformation of one of the lateral wings to the other side wing. More specifically, they block the transmission of the spacing movement of one of the lateral wings when opening one of the slots for the insertion of an electric wire to the other side wing defining the other slot .

These stiffening means of the connection element 10; 1 10; 210; 310; 410 comprise internal stop elements against which said lateral wings 42; 142; 242; 342; 442 come to bear when they are deformed towards the inside of the connection element.

More specifically, here, in the first, second, fourth and fifth embodiments, the tongue 30A; 330A; 430A which forms the central portion 30; 130; 330; 430 has lateral projections 35; 135; 335; 435 (Figures 1 and 2) which form said internal abutment members for the side wings 42; 142; 342; 442 of the peripheral portion 40; 140; 340; 440.

In the absence of electric wire introduced into the electrical connection element 10; 1 10; 310; 410, the lateral wings 42; 142; 342; 442 of the peripheral portion 40; 140; 340; 440 thus remain in abutment against the lateral projections 35, 135, 335; 435 of the central portion 30; 130; 330; 430.

In addition, particularly advantageously, the lateral projections 35; 135; 335; 435 stiffen the entire electrical connection element, in particular when inserting an electric wire into only one of the two slots 1 1, 21; 11, 121; 21, 221; 31, 321; 41 1, 421.

In the first, second, fourth and fifth embodiments of the connection element 10; 1 10; 310; 410, the lateral projections

35; 135; 335; 435 oppose the deformation of the lateral wing 42; 142;

342; 442 next to the slot in which no electric wire is introduced.

When the electric wire 1; 1A (Figures 6 and 30) is for example introduced into the first slot 1 1; 1 1 1; 31 1; 41 1 of the connection element 10; 1 10;

310; 410 while no electric wire is introduced into the second slot 21;

121; 321; 421, the lateral wing 42; 142; 342; 442 next to the first slot 1 1;

1 1 1; 31 1; 41 1 is deformed to allow the passage of the electric wire 1; 1A, and deviates from the functional branch 32; 132; 332; 432 of the central portion 30; 130; 330; 430 of the connection element.

This lateral wing 42; 142; 342; 442 next to the first slot 1 1;

1 1 1; 31 1; 41 1 is connected to the other side wing adjacent the second slot 21;

121; 321; 421 by the base 41; 141; 341; 441 of the peripheral portion 40; 140;

340; 440. Thus, the deformation of the lateral wing 42; 142; 342; 442 next to the first slot 1 1; 1 1 1; 31 1; 41 1 could, in the absence of lateral projections

35; 135; 335; 435, to cause the deformation of the other lateral wing 42; 142; 342;

442 next to the second slot 21; 121; 321; 421 towards the inside of the connection element.

The other side wing 42; 142; 342; 442 next to the second slot 21; 121; 321; 421 would then tend to move closer to functional branch 32; 132; 332; 432 of the central portion 30; 130; 330; 430 of the connection element. Here, the lateral projections 35, 135, 335, 435 of the central part prevent this deformation of the other lateral wing 42; 142; 342; 442 next to the second slot 21; 121; 321; 421 in the case described here.

They also prevent the deformation of the first lateral wing in the case where the electric wire is only introduced into the second slot.

In the third embodiment, the bent portion 231 B of the support leg 231 of the tongue 230A effectively forms such internal abutment members.

In this third embodiment, the stiffening of the connecting element 210 is further improved by the implementation of the tabs 236 which limit the movement of each lateral flange 242 of the peripheral portion 240 towards the outside of the element connection 210.

These tabs 236 thus form external abutment elements limiting the deformation of each lateral flange 242 of the peripheral portion 240 to the outside.

Alternatively, the spring blade forming the peripheral portion may also be prestressed so that the lateral wings enclose the lateral projections of the tongue.

In the example of the first embodiment shown in FIG. 10, the two electric wires 1, 2 used are identical. As a variant, however, the two electrical wires introduced into the first and second slots of the electrical connection element may have different sections. In addition, they can be made of different materials and / or have different stiffness or flexibility characteristics.

This is particularly represented in the case of the fifth embodiment, in FIG.

The geometry of the connecting element 410 according to the fifth embodiment, in which the edges of each slot are inclined towards each other so as to approach near the mouth 41 41 C, 421 C of each slot 41 1, 421 is particularly advantageous to accommodate electrical son 1A, 3A of different diameters, because this insertion is then possible without deforming the lateral wings 442 irreversibly. Electric wires different diameters are indeed inserted more or less far from the mouth 411C, 421 C, in the corresponding slot.

In practice, during the implementation of the electrical connection element 10; 110; 210; 310; 410, the user introduces the first electrical wire 1; 1A in the first slot 11; 111; 211; 311; 411.

During this insertion movement, the electric wire 1; 1A extends perpendicularly to the longitudinal axis X1; X11; X21; X31; X 41, X42 of slot 11; 111; 211; 311; 411, and parallel to the lateral wings 42; 142; 242; 342, 442 of the peripheral portion of the connection element. This electric wire is moved in translation in the corresponding slot keeping this orientation.

During this insertion movement, the insulating sheath 5; 1C of this first electrical wire 1; 1A contacts the edges 11A, 11B; 111A, 111B; 211A, 211B, 311A, 311B; 411 A, 411 B of the first slot 11; 111; 211; 311; 411 at the mouth 11 C; 111 C; 211C; 311C; 411C of the first slot 11; 111; 211; 311; 411.

In the first and fifth embodiments, the cutouts 13; 413 present on the edges 11A, 11B; 411 A, 411B of the first slot 11; 411 pierce the insulating sheath until the edges 11A, 11B; 411 A, 411B of the first slot 11; 411 come into contact with the conductive core 3; 1B of the first electrical wire 1; 1A.

In the other embodiments, the thin thickness of the edges of the slot is sufficient to cut the insulating sheath of the electric wire.

The conductive core 3, 1B of the electric wire 1; 1A having a high hardness, when the edge 11 B; 111 B; 211 B; 311 B; 411 B of slot 11; 111; 211; 311; 411, belonging to the amount 43; 143; 243; 343; 443 of the side wing 42; 142; 242; 342; 442 of the peripheral portion 40; 140; 240; 340; 440, comes into contact with the conductive core 3, 1B, it causes either the elastic deformation of the elbow connecting the lateral flange 42; 142; 342; 442 at base 41; 141; 341; 441 of the peripheral portion 40; 140; 340; 440 (first, second, fourth and fifth embodiments) is the deformation of the side wing 242 itself (third embodiment), so that said lateral flange 42; 142; 242; 342; 442 deviates from the central portion 30; 130; 230; 330; 430 to allow the conductive core 3; 1B of the electric wire 1; 1A to walk in the inner portion 14; 114; 214; 314; 414 of the first slot 11; 111; 211; 311; 411. Finally, when the user releases the pressure exerted on the electric wire 1 for its introduction, the conductive core 3; 1 B of it is pinched between the edges 1 1 A, 1 1 B; 1 1 1A, 1 1 1 B; 21 1 A, 21 1 B; 31 1 A, 31 1 B; 41 1 A, 41 1 B of the first slot 1 1; 1 1 1; 21 1; 31 1; 41 1 because the edge 1 1 B; 1 1 1 B; 21 1 B; 31 1 B; 41 1 B belonging to the amount 43; 143; 243; 343; 443 of the side wing 42; 142; 242; 342; 442 of the peripheral portion 40; 140; 240; 340; 440 tends to return toward the central portion 30; 130; 230; 330; 430.

This edge 1 1 B; 1 1 1 B; 21 1 B; 31 1 B; 41 1 B therefore plates the conductive core 3; 1 C of the electric wire 1; 1A against the edge 1 1A; 1 1 1A; 21 1A; 31 1A; 41A of the first slot 1 1; 1 1 1; 21 1; 31 1; 41 1 belonging to functional branch 32; 132; 232; 332; 432 of the central portion 30; 130; 230; 330; 430 of the electrical connection element.

In the second, third and fourth embodiments, the electric wire can not pass through the connection element 1 10; 210.

In the second and third embodiments, this is due to the fact that the orientation of the U formed by the leaf spring 140A; 240A positions the base 141; 241 on the path of the electric wire.

Specifically, in the second embodiment, the base 141 of the peripheral portion of the connecting member forms an obstacle preventing the path of the electric wire in a straight line through the slot and the connecting member.

In the third embodiment, the tongue 230A comprises, at the level of the window 234 of the flat portion 231 A of the support branch 231, along the edge of this window 234 facing the functional branch 232, a wall 238 which extends between the functional branch 232 and the bent portion 231 B.

This wall 238 forms a stop for the electrical wire and ensures that it does not obstruct the receiving cell formed at the window 234.

In the fourth embodiment, it is the rear portion 331 B of the support leg 331 which extends parallel to the functional branch 332, on the same side of the base 331 A as this functional branch 332, and thus forms a obstacle preventing the passage of the electric wire through the connection element when inserted into one of the slots of this connection element.

The introduction of the second electric wire 2 is similar.

Advantageously according to the invention, only the central part of the element Electrical connection is made in a material having a high electrical conductivity, which is economical. In addition, since the peripheral portion of the electrical connection element is made of a material different from that of the central part, it is possible to improve the reliability of the electrical connection element by using, for this peripheral part, a less good conductor material, but having mechanical qualities ensuring effective clamping of the electric wire between the edges of the corresponding slot.

In another variant, it is possible to envisage different arrangements with regard to the geometry of the electrical connection element.

For example, the lateral wings of the peripheral portion may not be parallel to each other at rest, that is to say in the absence of electrical wire inserted into the connection element.

Claims

1. An insulating sheath electrical connection member (10; 1 10; 210; 310; 410) having a first slot (1 1; 1 1 1; 21 1; 31 1) and a second slot (21; 121; 221 321; 421) for introducing at least one insulated electrical wire (1, 2; 1A, 2A, 3A), each delimited by two edges (1 1 A, 1 1 B, 21 A, 21 B; 1 1 1 A , 1 1 1 B, 121A, 121 B; 21 1A, 21 1B, 221A, 221B; 31A, 31B, 321A, 321B; 41A, 41B, 421A, 421B) facing each other, at least one of which is cutting, said two edges (1 1A, 1 1 B; 1 1 1A, 1 1 1 B; 21 1A, 21 1 B; 31 1A, 31 1 B; 1 A, 41 1 B) of each of the first and second slots respectively belonging to two parts (30, 40; 130, 140; 230, 240; 330, 340; 440) of the electrical connection element (10; 210; 310; 410), comprising a central portion (30; 130; 230; 330; 430) surrounded by a peripheral portion (40; 140; 240; 340; 440), the edges delimiting said first and second portions; slots (1 1, 21; 1 1 1, 121; 21, 221; 31, 321; 41 1, 421) being formed by two opposite edges of the central portion (30; 130; 230; 330; 430) and two edges vis-à-vis the peripheral portion (40; 140; 240; 340; 440 ), said central portion (30; 130; 230; 330; 430) being in the form of a tongue (30A; 130A; 230A; 330A; 430A) and said peripheral portion (40; 140; 240; 340; 440 ) in the form of a generally U-shaped spring blade (40A; 140A; 240A; 340A; 440A) with a base (41; 141; 241; 341; 441) from which two wings rise; opposing side members (42; 142; 242; 342; 442) enclosing said tongue (30A; 130A; 230A; 330A; 430A), characterized in that said two portions (30,40; 130,140; 230,240; 340, 430, 440) are distinct and made of two materials having different electrical conductivities.

An electrical connection member (10; 1 10; 210; 310; 410) as claimed in claim 1, wherein said cutting edge belongs to that of the two portions (30,40; 130,140; 230,240; 330,340; 430; 440) separate from the electrical connection element (10; 1 10; 210; 310; 410) which is made of the material having the highest electrical conductivity.

3. Electrical connection element (10; 1 10; 210; 310; 410) according to one of claims 1 and 2, wherein said first and second slots (1 1, 21; 1 1 1, 121; 21 1, 221; 31 1, 321; 41 1, 421) are arranged side by side, so as to extend along two longitudinal axes (X1, X2; X1 1 X12, X21, X22, X31, X32, X41, X42).

4. Electrical connection element (10; 1 10; 210; 310; 410) according to one of claims 1 to 3, wherein the central portion (30; 130; 230; 330;

430) is made of a material having an electrical conductivity greater than that of the material in which the peripheral portion (40; 140; 240; 340; 440) is formed.

5. An electrical connection element (10; 1 10; 210; 310; 410) according to one of claims 1 to 4, wherein each lateral flange (42; 142; 242;

342; 442) of the peripheral portion (40; 140; 240; 340; 440) includes an upright (43; 143; 243; 343; 443) extending toward the tongue (30A; 130A; 230A; 330A; 430A); the free end of each of these posts (43; 143; 243; 343; 443) forming said edges vis-à-vis the peripheral portion (40; 140; 240; 340; 440) of the electrical connection (10; 1 10; 210; 310; 410) and wherein the tongue (30A; 130A; 230A; 330A; 430A) has two longitudinal edges forming said opposite edges of the central portion (30; 130; 230; 330 430).

An electrical connection member (10; 110; 210; 310; 410) according to one of claims 1 to 5, wherein said tongue (30A; 130A; 230A;

330A; 430A) comprises a functional branch (32; 132; 232; 332; 432) and a support branch (31; 131; 231; 331; 431), said functional branch (32; 132; 232; 332; two longitudinal edges forming said opposite edges of the central portion (30; 130; 230; 330; 430), and wherein said tongue (30A; 130A; 230A; 330A; 430A) is integral with said spring blade (40A; 140A; 240A; 340A; 440A) exclusively at this support leg (31; 131; 231; 331; 431) of the tongue.

7. Electrical connection element (10; 310) according to claim 6, wherein, for its attachment to the leaf spring, said support leg (31; 331; 431) of the tongue (30A; 330A; 430A) is applied. against the base (41; 341; 431) of said spring blade (40A; 340A; 440A).

8. An electrical connection element (1 10) according to claim 6, wherein, for its attachment to the leaf spring, said support leg (131) of the tongue (130A) is applied against an additional wall (150) of said spring blade (40A; 340A) extending from the base (141) of this spring blade (140A) between the two lateral wings (142).

9. An electrical connection element (210) according to claim 6, wherein, for its attachment to the leaf spring, said support leg (231) of the tongue (230A) comprises two tabs (236) which are adapted to cooperate with retained with two openings (246) of the lateral wings (242) of the leaf spring (240 A).

10. Electrical connection element (10; 310; 410) according to one of claims 1 to 9, wherein the lateral flanges (42; 342; 442) of the peripheral portion (40; 340; 440) are each adapted to pivot about a pivot axis (P1, P2; P31, P32; P41, P42) orthogonal or substantially orthogonal to a longitudinal axis (X1, X2; X31, X32; X41, X42) of the slot (11, 21 311, 321, 411, 421).

An electrical connection element (110; 210) according to one of claims 1 to 9, wherein the lateral wings (142; 242) of the peripheral portion (140; 240) are each adapted to pivot about an axis. pivoting member (P11, P12, P21, P22) parallel or substantially parallel to the longitudinal axis (X11, X12, X21, X22) of the corresponding slot (111, 121, 211, 221).

An electrical connection member (10; 110; 210; 310) according to any one of the preceding claims, wherein the two edges (11A, 11B, 21A, 21B, 111A, 111B, 121A, 121B, 211A, 211B , 221A, 221B, 311A, 311B, 321A, 321B, 411A, 411B, 421A, 421B) facing each slot (11,21; 111, 121; 211, 221; 311 , 321; 411, 421) are sharp edges.

An electrical connection element (10; 110; 210; 310; 410) according to one of the preceding claims, wherein one (30; 130; 230; 330; 430) of the two separate parts of the connection (10; 110; 210; 310; 410) is made of a copper-containing alloy, while the other (40; 140; 240; 340; 440) of the two separate parts is made of stainless steel or steel.

14. Electrical connection element (10; 110; 210; 310; 410) according to one of the preceding claims, wherein there is provided means for stiffening the connection element (10; 110; 210; 310; 410). ) which block the transmission of the deformation of one of the lateral wings (42; 142; 242; 342; 442) to the other lateral wing (42; 142; 242; 342; connection.

15. Electrical connection element (10; 1 10; 210; 310; 410) according to the preceding claim, wherein said stiffening means of the connection element (10; 1 10; 210; 310; 410) comprise elements internal stop means against which said lateral wings (42; 142; 242; 342; 442) come to bear when they are deformed towards the inside of the connection element.

16. An electrical connection element (10; 1 10; 210; 310; 410) according to the preceding claim, wherein said internal abutment elements comprise lateral projections (35; 135; 235; 335; 435) extending from the central portion (30; 130; 230; 330; 430) of the connecting member to the lateral wings (42; 142; 242; 342; 442) of the peripheral portion (40; 140; 240; 340; 440).

The electrical connection element (210) according to one of claims 14 to 16, wherein said stiffening means further comprises external stop members limiting the deformation of each side wing (242) of the peripheral portion (240). outwards.

18. Electrical apparatus comprising an electrical connection element (10, 1 10, 210, 310, 410) according to one of the preceding claims forming a connection terminal for its connection to an electrical network.

19. Electrical apparatus according to claim 18, wherein the tongue (230A) of the connection element (210) forming the connection terminal has a shape defining a receiving cell of an electrical connection pin of another apparatus. electric.