Power connection module for clamping an electrical cable termination by means of a sheet, of which at least one deformable part forms a connection block part of a connection assembly.

Description

Domaine technique

[0001] The present invention relates to the field of electrical power connectors.

[0002] More specifically, it concerns terminal block connection sets.

[0003] For the purposes of this invention, a "terminal block" is defined as a device for ensuring electrical continuity between a cable and another part of an installation. A terminal block, also known as a connection terminal or screw terminal, is an electrically insulated module that secures two or more electrical wires / cables intended to be electrically connected together, and includes an insulating support and at least one clamping component for securing the wires / cables.

[0004] By "contact" we mean here and within the framework of the present invention, an element made of electrically conductive material to allow the passage of electric current.

[0005] Although described with reference to a preferred application, aeronautics, and more particularly aircraft wiring, the invention can be implemented in any other application that requires a power connection, including several hundred amperes and / or volts and particularly a large number of electrical cables / wires together in a junction area. Technique antérieure

[0006] One of the aircraft wiring operations consists of electrically connecting a large number of power cables / wires together.

[0007] This operation is usually carried out using a screw terminal block, fixed to the aircraft structure, into which the plurality of electrical cables / wires is inserted and then secured by tightening.

[0008] We represented in figures 1 et 2 , an example of such an existing terminal block, generally designated by the reference 1, which is designed to connect two or more electrical cables 2 equipped with lugs 20 at their ends by a screw-nut system.

[0009] This terminal block 1 includes first of all an electrically insulating support 10 in which terminal screws 11 are fixed, each of which, together with a nut 12, forms a screw-nut system for tightening the lugs 20 equipping the cables 2.

[0010] A washer, in particular electrically conductive, 13, of the wavy washer type, is provided for each screw-nut system.

[0011] An electrically conductive bar 14 is traversed by each terminal screw 11. This bar 14 forms a bearing surface for the cable lugs 20 and thus constitutes an electrical shunt between the cables 2 to be electrically connected. This plate 14 is optional, and each screw 11 is electrically independent. Alternatively, the plate 14 may extend only over a portion of its length and electrically connect only some of the screws.

[0012] The support 10 is fixed to an aircraft structure S by means of column screws 15.

[0013] A cover 16 held by the column screws 15 forms a protective cover for the screw-nut systems 11, 12.

[0014] Since terminal block 1 is not waterproof, an additional cover commonly called an "umbrella" is attached to the aircraft structure above the terminal block to prevent condensed moisture from running directly onto the cables 2 connected in the terminal block.

[0015] Besides this non-waterproof aspect, such a screw terminal block has many major disadvantages.

[0016] First, the lugs 20 must be perfectly oriented to be threaded around the terminal screws 11 for a satisfactory electrical connection. This usually means that an operator will have to untwist the cables 2.

[0017] The number of parts to be managed (screws, nuts, washers, shunt bar, hood, umbrella part) for an operator in charge of assembly is significant, with, moreover, a high risk of parts loss which therefore induces a risk of foreign body, or mechanical debris (FOD, an Anglo-Saxon acronym for "Foreign Object Damage") which can cause damage, something that is absolutely to be avoided in the field of aeronautics.

[0018] This risk of parts loss is all the more significant when the areas where existing terminal blocks 1 are installed have difficult and / or very restricted access and / or are located in an inconvenient position for the operator. For example, the insulating support 10 is usually fixed to the ceiling side of an aircraft structure. This can mean that the lugs installed on the screws 11 will not stay in place until a nut 12 has also been installed. In other words, there is no pre-positioning function for the lugs on the screws. In addition to the inherent tightening operations with the screws, which can be time-consuming for a dedicated operator, another operator is systematically dedicated to verifying the tightening torques applied for securing the cable lugs 20.

[0019] Also, screw terminals require that the cables not be energized to avoid electrical hazards for operators handling the electrical connection. These risks cannot, moreover, be completely eliminated during tests to verify proper operation.

[0020] Thus, in the end, the installation time for a screw terminal block is long.

[0021] In addition, the 20 lugs may need to be oriented at 180°, which is not very compatible with power cables that are rigid, typically with a diameter of around AWG 000 (American Wire Gauge unit of measurement), or 10.4 mm.

[0022] Finally, screw terminals do not allow for modularity because the number of cables that can be connected in a single terminal block is fixed.

[0023] Patent GB2321790 A discloses an electrical connection module according to the preamble of claim 1.

[0024] US patent 10998649B2 discloses a terminal block in which, after insertion into a cavity in a body, an electrical cable conductor is clamped between a fixed blade and a movable, deformable blade, actuated by a rotary lever directly by an operator. This solution is not directly adaptable to a cable termination. Furthermore, the clamping force is reduced. And finally, there is no locking mechanism for the inserted conductor. The rotary lever's actuating mechanism is also large, requiring good accessibility for the operator's hand. However, such access is far from possible in an aeronautical environment. Correct cable insertion detection is also not implemented.

[0025] CN211404771U also discloses a terminal block in which the clamping of a cable conductor is achieved by deformation of a contact blade by means of a pressure screw.

[0026] This solution presents the same drawbacks as that of patent US10998649B2. Furthermore, the end of the tightening force cannot be determined because it is directly linked to the manual tightening. No detection is performed to ensure the correct insertion depth of the conductor.

[0027] To improve existing terminal blocks, the Applicant proposed in patent application EP3758165 a connection assembly that provides more modularity, facilitates installation, particularly in areas with restricted access and / or for a large number of electrical wires / cables to be connected, and protects operators in charge of the connection against electrical hazards.

[0028] Although this solution is entirely satisfactory, there is still a need for improvement, particularly for the passage of high currents, typically up to 400 A, which involves high contact pressure and therefore high connection effort, without premature wear of the contacts appearing.

[0029] The invention aims to meet all or part of this need. Exposé de l'invention

[0030] To this end, the invention relates, according to one of its aspects, to an electrical connection module, intended to constitute part of a terminal block of a connection assembly, with a longitudinal axis (X) comprising: at least one body made of electrically insulating material comprising at least one cavity extending along the X-axis and adapted to house an electrical cable termination, including a contact, preferably cylindrical, intended to be connected, preferably crimped, to an electrical cable; at least one blade comprising at least a portion of a blade, which is electrically conductive and electrically conductive, housed fixedly or with clearance at least partly in the cavity, and at least a portion of a blade, which is elastically deformable between a rest position in which it defines a space adapted to allow the insertion, along the X-axis, of the contact of the electrical cable termination, and a deformed position in which it clamps, transversely to the X-axis, the contact of the electrical cable termination so as to establish electrical continuity between the contact and the blade(s).at least one clamping mechanism, intended to be actuated by rotation from the outside, comprising a means for transforming a rotation into a translation, transverse to the X axis, which exerts a force (F) on the deformable part of the blade to bring it from its rest position into its deformed clamping position of the electrical cable termination contact.

[0031] In other words, the invention essentially consists of a module for a terminal block connection assembly with a body having a cavity in which, after being inserted, a cable termination contact is clamped between a fixed part and a deformable part transversely in contact with a blade, the clamping being carried out from the outside by a tool and by means of a cam clamping mechanism and force transmission piece, or lever, housed in the body of the module.

[0032] The cam clamping mechanism ensures individual clamping of a termination contact to guarantee desired electrical continuity with significant effort and in a small footprint within the module, whose body is small in size.

[0033] Advantageously, the force transmission element is configured to fit into a transverse groove in the termination contact, indicating the correct positioning (insertion) of the contact within the cavity. If the contact is not inserted correctly, the force transmission element will abut against a part of the contact, preferably a cylindrical section, preventing the clamping mechanism from being actuated. Furthermore, the force transmission element prevents any slippage of the contact between the sheets.

[0034] As an advantageous option, a locking device allows the mechanism to be locked in the deformed position of the blade and therefore in the contact clamping configuration for the desired electrical continuity.

[0035] The blade(s) are shaped to constitute at least two, advantageously three, direct linear or surface support zones with the contact of the electrical termination in the deformed position of the second blade.

[0036] These linear or surface support zones are distributed angularly, preferably regularly, around the periphery of the contact. Advantageously, three linear support zones are arranged approximately 120° apart.

[0037] With these bearing areas distributed angularly around the contact, a well-distributed clamping is ensured around a cylindrical electrical termination contact.

[0038] According to an advantageous embodiment of the invention, the module comprises a single blade with a cross-section about the X-axis substantially in U shape.

[0039] According to this method, the clamping mechanism advantageously includes a lever mounted pivoting in the body and accessible from the outside so as to deform at least one of the two arms of the U and thus bring it from its rest position to its deformed position.

[0040] According to another advantageous embodiment of the invention, the module comprises at least one first blade, electrically conductive, housed in the cavity and rigid, and at least one second blade, electrically conductive, housed in the cavity and comprising at least one part elastically deformable between the rest position and the deformed position.

[0041] According to this alternative embodiment, the clamping mechanism comprises: a force transmission part, housed in the body, an interface part with a tool (H), mounted freely for rotation in a housing in the body and adapted to be rotated by the tool, a clamping cam, integral with or made entirely with the interface part, the rotation of the clamping cam causing the translation of the force transmission part, transversely to the X axis, which exerts a force (F) on the second blade to bring it from its rest position into its deformed clamping position of the contact of the electrical cable termination.

[0042] Advantageously, the interface piece may include an interface recess with the tool, preferably a hollow hexagonal recess.

[0043] According to an advantageous embodiment, the module body and / or the interface piece includes at least one visual indicator arranged so as to be visible to an operator to indicate the correct tightening position of the electrical termination contact. The module body and / or the interface piece may thus include, as a visual indicator, a clearly visible colored area.

[0044] According to an advantageous embodiment, the force transmission component includes a locking portion adapted to insert itself, during translation of said component, into a peripheral groove of the electrical termination contact and thus lock the latter in the body, preferably before or simultaneously with the tightening of the contact. In this way, the termination contact is locked in a correct insertion position before the tightening force is applied to it.

[0045] According to an advantageous feature, the locking portion has a shape complementary to that of the peripheral groove of the electrical termination contact.

[0046] According to an advantageous configuration, the second blade is mounted freely in the first blade at one of its ends, and free at the other of its ends.

[0047] Preferably, the clamping cam is mounted to rotate between two arms of the first blade. This improves the absorption of mechanical forces, particularly in demanding temperature environments.

[0048] According to an advantageous variant, the force transmission part further includes a return portion to bring the second blade back to its rest position when loosening after unlocking the contact.

[0049] In an advantageous embodiment, the body comprises an opening opposite the cavity, internally provided with at least one protrusion or a plurality of straight longitudinal grooves, preferably regularly spaced at angles, each adapted to receive either between two adjacent ribs of the cable termination sleeve or to receive a straight groove formed around the sleeve. The protrusion(s) or grooves of the termination sleeve allow the torsional forces of the cable to be absorbed by the module body. Furthermore, they prevent the contact from rotating by sliding once it is tightened in the connection module.

[0050] By choosing small angular sectors between splines, we obtain an insertion of the contact in the module which does not require angular indexing.

[0051] According to an advantageous embodiment, the module includes a locking / unlocking device for the clamping mechanism, when the clamping cam is in its rotation position corresponding to the deformed position of the second blade.

[0052] According to a first embodiment, the locking device comprises: a hole made in the interface piece, a rigid pin mounted on a spring, preferably a helical compression spring, the pin with the spring being housed inside the body of the module such that, in the deformed position of the second blade, the pin is inserted into the hole with the spring exerting a restoring force on the pin and thereby achieves the locking of the clamping mechanism, its unlocking being achieved by a rotational torque applied to the interface piece, which is adapted to overcome the restoring force of the spring.

[0053] According to a second embodiment, the locking device comprises: a groove made in the interface piece, a rigid blade on a spring, preferably a helical compression spring, the rigid blade being partially housed and the spring being housed inside the body of the module such that, in the deformed position of the second blade, the free end of the blade is inserted into the groove with the spring exerting a restoring force on the blade and thereby achieves the locking of the clamping mechanism, its unlocking being achieved by a push on a portion of the blade protruding from the body, which is adapted to overcome the restoring force of the spring.

[0054] According to a third embodiment, the locking device comprises: at least one pin made at the periphery of the interface piece or the clamping cam, a spring, preferably a helical compression spring, housed inside the body of the module such that, in the deformed position of the second blade, the spring exerts a restoring force on the interface piece and the clamping cam to wedge the pin in the body by releasing the interface piece from the body, and thereby achieves the locking of the clamping mechanism, its unlocking being achieved by a push on the interface piece, adapted to overcome the restoring force of the spring.

[0055] According to a fourth embodiment, the locking device comprises: A slot is formed on an outer face of the body, at the periphery of the interface piece. A flexible tab, either integral with or made entirely of the interface piece, is designed so that, in the deformed position of the second blade, the free end of the tab fits into the slot, thereby locking the clamping mechanism. Unlocking is achieved by releasing the free end of the tab, a movement adapted to overcome the springback force of the flexible tab.

[0056] According to a fifth embodiment, the locking device: an interface piece with a tool, mounted freely for rotation in a housing of the body and adapted to be rotated by the tool, the interface piece being a cylindrical piece provided with a flat thus forming a cam, a locking piece, one wall of which extends transversely to the longitudinal axis X, mounted in translation in the body between a locking position of the clamping mechanism, and an unlocking position, the locking piece being arranged relative to the interface piece, so that when the latter is: in its unlocking position, the cylindrical part of the cam mechanically interferes with another wall of the piece, which prevents passage to its locking position, in its locking position, any rotation of the cam brings its flat against a straight portion of said other wall of the locking piece, which prevents passage to its unlocking position.

[0057] According to this fifth variant, when the part is in its locking position, the wall protrudes inside an opening, and when the part is in its unlocking position, said wall is recessed from inside the opening, the wall being adapted to fit into a transverse groove of the electrical termination sleeve and thus lock the latter into the body, preferably after or simultaneously with the tightening of the contact.

[0058] According to a first connection configuration, the first blade includes a portion extending outside the body and adapted to be electrically connected by welding or screwing to a busbar.

[0059] The electrical connection module can also be dedicated to a connection between harnesses, that is to say between at least two separate electrical cable terminations.

[0060] Thus, according to a second connection configuration, the module includes: Two bodies aligned or side by side and fixed together or forming a single unit, with a single first blade common to the cavities of both bodies, at least two second blades independent of each other, each to tighten a contact, and at least two clamping mechanisms independent of each other. Thus, at least two electrical cable terminations can be connected in series within the same module.

[0061] According to this second mode and a variant of the connection between a current input and three outputs, the module is designed to: Each body comprises at least two cavities, aligned or not, the cavities preferably extending parallel to the longitudinal axis (X) of the module, the two second blades of the same body being electrically connected together, preferably common to the cavities of the two bodies, so as to make an electrical shunt between the at least four electrical cable terminations when housed individually in the cavities.

[0062] According to a third connection configuration, the module includes: two bodies aligned or side-by-side and fixed together or forming a single monobloc piece, a single first blade common to the cavities of both bodies, a single second blade, comprising several independent deformable parts each to clamp each a contact, at least two clamping mechanisms independent of each other.

[0063] The invention also relates to a terminal block connection assembly, comprising a plurality of modules of identical or different dimensions with cavities of identical or different dimensions to house electrical terminations of identical or different dimensions.

[0064] The invention finally relates to a structure, in particular an aircraft structure, comprising at least one electrical connection module as described above and / or at least one terminal block connection assembly as described above, preferably fixed(s) on a support rail, itself intended to be fixed to the structure.

[0065] The invention offers numerous advantages compared to existing solutions, including: the elimination of cable orientation problems, which can be very rigid, by replacing the usual lugs with cylindrical contacts; a reduction in the installation time of electrical cables in a structure, in particular an aircraft structure, by a quick assembly system which guarantees efficient tightening of the cable terminations, without the need for so-called torque tightening, i.e. by applying a specific tightening force in order to obtain maximum precision; individual coupling of each electrical termination in a single or multi-cavity connection module; effortless coupling since, before tightening, the gap between the two blades allows easy insertion without friction, which also has the advantage of not generating wear on the contact and / or its possible coating;high contact pressure between the electrical contact of the cable termination and the contact blades within the module, which reduces the electrical contact resistance and therefore allows a high current flow with reduced heating; centering of the termination contact over a significant length between the two contact blades within the module, which, combined with the high contact pressure, provides resistance to vibration and wear of any contact coating; detection of the correct positioning of the termination contact in the module thanks to the locking device of the clamping mechanism; both visual (marking on the module opposite an indicator on the interface piece) and tactile (mechanical stop of the termination contact) indication of the correct clamping of the termination contact in the module;The elimination of existing umbrella parts in an aircraft structure thanks to the sealed solution with connection modules that hermetically seal the electrical terminations within the cavities; the absence of risk of part loss (FOD for "Foreign Object Damage"), as the solution according to the invention has no independent, detachable parts to install; protection of operators against electrical hazards, since they only have to directly handle electrically insulating parts (modules and insulating termination sleeve); high modularity that can easily adapt to different wiring configurations; the connection module is particularly suitable for a high-voltage power line (several hundred volts), because there is only one potential in a connection module (phases and neutral are separated into different modules) and the creepage and insulation lines between electrical conductors are extended.

[0066] The applications envisaged for a terminal block with modules according to the invention are numerous, among which we can mention the wiring of civil aircraft.

[0067] Other advantages and features of the invention will become clearer upon reading the detailed description of examples of implementation of the invention given by way of illustration and not limitation with reference to the following figures. Brève description des dessins

[0068] [ Fig 1 ] there figure 1 represents a perspective view of a state-of-the-art screw terminal block used for electrical wiring in aircraft structures. Fig 2 ] there figure 2 is another perspective view of a state-of-the-art screw terminal block showing lug-cable harnesses connected within the terminal block. Fig 3 ] there figure 3 is a perspective view of a connection module according to a first embodiment of the invention, with two symmetrical bodies fixed to each other with aligned cavities, each housing a contact of an electrical cable termination. Fig 4 ] there figure 4 is an exploded view of the module according to the figure 3 with the two electrical cable terminations. Fig 5 ] there figure 5 is a cross-sectional view taken at the level of the body of a connection module according to the first embodiment of the invention, showing the tightening of the contact of a cable termination made in the cavity of the body by means of the mechanism integrated therein. Fig 6A], [Fig 6B ] THE figures 6A et 6B These are cross-sectional views of the clamping mechanism of a module, showing respectively the position before clamping and after clamping with locking of a contact on an electrical cable termination. Fig 7A], [Fig 7B], [Fig 7C ] THE figures 7A, 7B et 7C These are partial perspective and cutaway views of the clamping mechanism of a module, showing respectively the position before clamping, a position of the contact of an electrical cable termination making it impossible to clamp and lock, and after clamping with the contact locked. Fig 8 ] there figure 8 resumes the figure 7C from another perspective. Fig 9A ], [ Fig 9B ] THE figures 9A And 9B These are cross-sectional views of the clamping mechanism of a module according to an alternative embodiment, showing respectively the position after clamping with locking of a contact of an electrical cable termination and the loosening position after unlocking, the second blade being returned to this position by a portion of the force transmission part. Fig 10 ] there figure 10 is a perspective and cross-sectional view of a connection module according to a second embodiment of the invention, with a body whose cavity houses a contact of an electrical cable termination. Fig 11 ] there figure 11 is a perspective view of a module according to the figure 10 showing after tightening and locking a contact on an electrical cable termination. Fig 12A ], [ Fig 12B], [Fig 12C ] THE figures 12A , 12B et 12C These are perspective views of an insertion variant with rotation-blocking of a contact on an electrical cable termination in a module. Fig 13 ] there figure 13 is a longitudinal cross-sectional view of a sealed variant of a connection module according to the invention, with two bodies fixed together, each housing a contact of an electrical cable termination. Fig 14 ] there figure 14 is a cross-sectional view of the module according to the figure 13 showing the seal at the clamping mechanism. Fig 15 ] there figure 15 is a perspective and cutaway view of a connection module according to the first mode with two bodies, each housing two adjacent cavities, arranged side-by-side, showing the electrical shunt created within the module body by the deformable blade and the rigid blade. Fig 16 ] there figure 16 is a perspective view of an embodiment of a connection module according to the first mode with two bodies, each housing two adjacent cavities, which allows for an electrical connection between one electrical input termination and three output terminations. Fig 17 ] there figure 17 is a cross-sectional view of a module according to the figure 16 , showing the electrical shunt created within the same module body by both the deformable blade and the rigid blade. Fig 18 ] there figure 18 is a perspective and cutaway view of a module according to the figure 15 showing the electrical shunt created within the same module body but only with a rigid blade. Fig 19 ] there figure 19 is a perspective and cutaway view of a connection module according to the first mode with two bodies, each housing two adjacent cavities, with the rigid blades isolated from each other and the deformable blades also isolated from each other. Fig 20 ] there figure 20 is a perspective and cutaway view of a connection module according to the first mode, according to a variant with a single second monobloc blade comprising two deformable parts. Fig 21 ] there figure 21 is a perspective view of an embodiment of a terminal block with several connection modules connected to the same busbar. Fig 22A], [Fig 22B ] THE figures 22A et 22B illustrate in perspective view and partial cutaway of a first locking / unlocking variant of the clamping mechanism of a connection module according to the invention, respectively in the unlocked and locked positions of the latter. Fig 23A], [Fig 23B ] THE figures 23A et 23B illustrate in perspective view and partial cutaway of a second locking / unlocking variant of the clamping mechanism of a connection module according to the invention, respectively in the unlocked and locked positions of the latter. Fig 24A], [Fig 24B ] THE figures 24A et 24B illustrate in perspective view and partial cutaway of a third locking / unlocking variant of the clamping mechanism of a connection module according to the invention, respectively in the unlocked and locked positions of the latter. Fig 25A], [Fig 25B ] THE figures 25A et 25B illustrate in perspective view and partial cutaway of a fourth locking / unlocking variant of the clamping mechanism of a connection module according to the invention, respectively in the unlocked and locked positions of the latter. Fig 26], [Fig 26A ] THE figures 26 et 26A are respectively perspective and longitudinal section views of an electrical termination and a connection module according to another embodiment of the invention, with two bodies fixed together, each housing a contact of an electrical cable termination, with a device for locking the termination contact and securing this locking. Fig 27A], [Fig 27B ] THE figures 27A et 27B illustrate, in a partial perspective view, a connection module according to the mode of figures 26 et 26A , showing the locking piece of the device held in position to allow the insertion of a contact. Fig 28A], [Fig 28B ] THE figures 28A et 28B correspond respectively to figures 27A et 27B Top view. Fig 29 ] there figure 29 illustrates, in partial perspective and longitudinal section views, the position of the locking piece in its unlocked position. Fig 30A], [Fig 30B ], [ Fig 30C ] THE figures 30A, 30B And 30C are perspective and longitudinal section views showing the different stages of insertion and locking of a contact in a module according to the modes of figures 26 et 26A . [ Fig 31], [Fig 32 ] THE figures 31 et 32 These are top views showing the contact locking mechanism secured at the end of the locking step according to the figure 30C . Description détaillée

[0069] Throughout this application, the terms "vertical", "lower", "upper", "bottom", "top", "below" and "above" are to be understood by reference to an electrical connection module in a fixed configuration, in particular to a support rail, when arranged horizontally.

[0070] Similarly, the terms "internal" and "external" are to be understood in relation to an electrical connection module body according to the invention.

[0071] For the sake of clarity, the same numerical reference is used for the same element of an electrical cable according to the state of the art and of an electrical cable according to the invention.

[0072] THE figures 1 et 2 have already been described in detail in the preamble. They will therefore not be commented on below.

[0073] The same element is designated by a single numerical reference throughout the set of figures 1 à 32 .

[0074] We have represented on the figures 3 et 4 an example of an electrical connection module according to a first embodiment of the invention, globally designated by reference 3, intended to form part of a terminal block of a connection assembly.

[0075] This electrical connection module 3 comprises two bodies 30, preferably identical or symmetrical, fixed to each other. The means of fixing the two bodies 30 are not shown, but they may consist of screws / nuts passing through both bodies.

[0076] Each body 30 is electrically insulating along its longitudinal axis X, and is intended to house, clamp, lock and connect at least one termination 4 of electrical cable 2. This electrical cable 2 comprises an outer sheath 20 surrounding an electrical conductor 21.

[0077] More specifically, each body 30 includes a cavity 31 within it and the two cavities 31, preferably of the same size, are opposite each other in each of which an electrical cable termination 4 is inserted, tightened and locked, as explained below.

[0078] An electrical cable termination 4, with central axis X1, includes an electrically insulating sleeve 40 and a cylindrical electrical contact crimped 41 onto an electrical cable 2, inserted and fixed in particular by snap-fitting, inside the sleeve 40.

[0079] The sleeve 40 includes on its outer periphery straight grooves 42 which extend around the central axis X1 over part of the length of the sleeve.

[0080] The cylindrical contact 41 is provided with a peripheral groove 43 which allows the detection of the correct insertion and the locking of the contact 41 in the cavity 31 of a body 30, as explained later.

[0081] A first electrically conductive blade 32 is fixedly housed or housed with very little play to facilitate assembly in each cavity 31 and recentering of the termination contact after tightening against the blade. In the illustrated example of the figure 4 , this first blade 32, of general U-shaped cross-section, is common to the cavities 31 of the two bodies 30.

[0082] A second blade 33, preferably electrically conductive, is also housed in each cavity 31. This second blade 33 is elastically deformable between a rest position in which it defines with the first blade 32 a space suitable to allow the insertion, along the X axis, of the contact 41 of the termination 4 of the electrical cable, and a deformed position in which it clamps with the first blade, transversely to the X axis, the contact of the electrical cable termination so as to establish an electrical continuity between the contact 41 and the first and second blades 32 and 33.

[0083] To achieve this deformation of the blade 33 and thus the tightening of the contact 41, the module 3 integrates a clamping mechanism 5 in each body 30, accessible from the outside and actuated by a tool which allows to provide a significant clamping force.

[0084] This mechanism 5 includes a force transmission piece 50 housed in the body 30, an interface piece 51 with a tool, mounted freely for rotation in a housing 34 of the body and adapted to be rotated by the tool, and a clamping cam 52, integral with or made entirely with the interface piece 51.

[0085] As shown in the figure 5 , when a contact 41 is inserted into the cavity 31, the rotation of the clamping cam 52, caused by the rotation (R) of the interface piece 51, causes the transmission piece 50 to translate transversely to the X axis, which exerts, via the cam 52, a force (F) on the second blade 33 to bring it from its rest position ( figure 6A ) in its deformed position of contact clamping 41 ( figure 6B ).

[0086] As also shown at the figure 5 , the blades 32 and 33 are advantageously shaped to constitute three direct linear support zones, arranged approximately 120° apart, as symbolized by the arrows, with the contact 41 in the deformed position of the second blade 33. The three angularly distributed direct linear support zones allow the contact to be balanced and mechanically stabilized in the connection module.

[0087] According to an advantageous arrangement, the second blade 33 is mounted freely in the first blade 32 at one of its ends 330, and freely at the other of its ends 331 ( figures 5 , 6A, 6B ).

[0088] According to another advantageous arrangement, the clamping cam 52 is mounted for rotation between two arms 320, 321 of the first blade 32 ( figures 5 , 6A, 6B ). Thus, not only is a compact assembly of the clamping mechanism 5 and the blades 32, 33 obtained, but the transfer of mechanical forces passing from the cam to the blade 32 is also improved, particularly under high temperature.

[0089] An advantageous variant consists of making the force transmission part 50 with a locking portion 53 adapted to insert itself, during the translation of the part 50, into the peripheral groove 43 of the contact 41 of the electrical termination 4 and thus lock the latter in the body, preferably before or simultaneously with the tightening of the contact. As shown in the figure 5 , this locking portion 53 preferably has a shape complementary to that of the peripheral groove 43 of the contact 41.

[0090] Thus, in the rest position of the blade 33 and in the absence of rotation of the interface piece 51, a contact 41 can be freely inserted, i.e. without effort, between the blades 32 and 33 ( figure 7A Conversely, if the interface piece has undergone rotation and is no longer in its open position, the locking portion 53 is in mechanical interference with the contact 41 during its insertion, preventing non-compliant assembly.

[0091] If the contact 41 is not inserted sufficiently far into the cavity 31 of the body 30, the locking portion 53 of the part 50 abuts against the cylindrical part of the contact 41 ( figure 7B ). Thus, in this configuration, locking the contact 41 in the cavity 31 is impossible, as is clamping it by the blade 33.

[0092] Conversely, if the contact 41 is correctly inserted into the cavity 31 of the body 30, the locking portion 53 of the part 50 inserts itself into the peripheral groove 43 of the contact 41 and thus locks it in the cavity 31 ( figures 7C , 8 ). In other words, the contact is blocked in translation along the X axis. The clamping of the contact 41 between the fixed blade 32 and the blade 33 to be deformed can then be carried out.

[0093] The interface piece 51 may include an interface recess 54 with the tool, preferably a hollow hexagonal recess. An operator can thus use a standard, external tool such as a hexagonal Allen key.

[0094] According to an advantageous embodiment, the module body 30 comprises at least one visual indicator 35, 36, and the interface piece 51 also comprises at least one visual indicator 55. These visual indicators 35, 36, 55, in particular each in the form of a visible colored area, are arranged on the upper face of the body so as to be visible to an operator to indicate the correct tightening position of the electrical termination contact 41. Thus, in the illustrated example, an indicator 55 of the interface piece 51, in the form of a colored arrow, is positioned opposite an indicator 35 of the body, of a first color, for example green, when tightening is complete, and opposite an indicator 36, of a second color, in a fully loosened contact position, which corresponds to the rest position of the blade 33.

[0095] In an advantageous embodiment, the force transmission part 50 may also include a return portion 56 which is attached to the free end of the blade 33. In the illustrated example, this return portion 56 somehow covers this free end of the blade 33. Thus, when the contact 41 is unlocked, this return portion 56 exerts a pull on the free end of the blade 33 and returns it from its deformed position ( figure 9A ) to its resting position ( figure 9B ).

[0096] We have represented on the figure 10 , an example of an electrical connection module according to a second embodiment of the invention, globally designated by reference 3', also intended to form part of a terminal block of a connection assembly.

[0097] This electrical connection module 3' comprises an electrically insulating body 30 intended to house, clamp, lock and connect an electrical cable termination 4 2, as already described.

[0098] Here, module 3' comprises a single blade 33' whose cross-section is substantially U-shaped, which is housed in cavity 31 of the module. One of the arms 330 of the U is rigid and fixed, the other of the arms 331 being able to deform to approach the fixed arm 330.

[0099] The clamping mechanism 5' here consists of a single lever mounted pivoting around the fixed branch 330 and accessible from outside the body 30.

[0100] Thus, once the contact 41 is inserted freely, without effort, between the two branches 330, 331 separated from each other and in the rest position ( figure 10 ), pivoting the lever 5' downwards in the illustrated example allows the free end 332 of the arm 331 to be locked into a suitable housing 50' of the lever, which causes the arm 331 to move closer to the arm 330 by deformation ( figure 11 Thus, in the deformed position of the arm 331, the contact 41 is clamped by the two arms 330 and 331, which define two direct surface bearing zones with the contact 41, facing each other. These two angularly distributed direct surface bearing zones balance the contact and stabilize it mechanically within the connection module. As shown in the figure 11 , the shape and dimensions of lever 5' are advantageously chosen to best fit the outside of the module body 30, without protruding outwards.

[0101] As shown in detail in figures 12A à 12C , we can make a part of the module body 30 and an electrical cable termination 4 so as to lock the latter in rotation once its contact is inserted into a cavity 31.

[0102] Thus, as shown, the body 30 includes a tubular extension with an opening 38 opposite the cavity 31, which is internally provided with a plurality of longitudinal straight grooves 39, preferably regularly distributed angularly, and which are each adapted to receive a straight groove 42 formed around the sleeve 40 of the electrical cable termination 4.

[0103] The grooves 42 allow the torsional forces of the cable 2 to be absorbed on the body of the module 3 and also prevent the rotation of the contact 41 by sliding, once inserted and tightened in the connection module 3.

[0104] The grooves 42 are preferably slightly spaced angularly from each other, which allows the contact 41 to be inserted into the body 30 of the module, without having to index it in rotation beforehand.

[0105] A watertight connection variant can be envisaged between the termination contact(s) 41 and the module body(s) 30.

[0106] As shown in the figure 13 , this variant may for example consist of implanting at least one O-ring 44 on the free end of the sleeve 40, at the interface with the body 30, and at least one annular cable gland 45 mounted in the other end of the sleeve 40 at the interface with the cable 2.

[0107] An O-ring 300 can also be provided at the interface between two bodies 30 fixed together.

[0108] In addition, an O-ring 500 can be fitted around the interface piece 51, in its housing ( figure 14 ).

[0109] The connection modules according to the invention allow different connection configurations between electrical harnesses with electrical cable termination 4.

[0110] As described and illustrated previously, a single module 3 can comprise two bodies 30, preferably identical or symmetrical, aligned opposite each other and fixed to one another. This allows for an electrical connection with a single input and output.

[0111] One can also consider a 3" connection module with two 30 bodies arranged side by side, electrically connecting two cable terminations arriving from the same side of the module ( figure 15 As can be seen on this figure 15 A single first blade 32 and a second blade 33 are housed in the cavities 31. The single blade 33 comprises two independently deformable parts with a cam clamping mechanism 51 and electrically connected to each other, so as to create an electrical shunt between the two electrical cable terminations 4 when they are individually inserted into the cavities. The two bodies 30 can be fixed to each other or made entirely as a single piece.

[0112] This variant with side-by-side module bodies can, for example, be implemented on the same face of a panel.

[0113] Other configurations with multiple outputs are possible.

[0114] THE figures 16 à 18 illustrate a variant with one electrical input E and three electrical outputs S with an electrical shunt made inside the bodies 30 of a 3" connection module according to the first mode.

[0115] More specifically, as shown on the figures 17 et 18 , the 3" module comprises two bodies 30 aligned and fixed together, each of the bodies 30 comprising internally two cavities 31 extending parallel to the longitudinal axis (X) of the module.

[0116] Each contact 41 is tightened by means of a clamping mechanism 5 independent of the others.

[0117] The first blade 32 is common to the cavities 31 of the two bodies 30.

[0118] In the variant of the figure 17 , two second blades 33 independent of each other are housed in the cavities 31 and electrically connected to each other, so as to make an electrical shunt between the four electrical cable terminations 4 when they are inserted individually into the cavities.

[0119] To hold the blades 32, 33 inside the body 30, a retaining spacer 301 can be provided.

[0120] An alternative method for creating the electrical shunt is shown at the figure 18 : the shunt is made only by the first blade 32, the deformable blades 33 being electrically isolated from each other.

[0121] Another variant with two inputs E and two outputs S, illustrated in the figure 19 The module can consist of two aligned and fixed bodies 30, each comprising two cavities 31, but without shunting the two electrical lines. In other words, the two electrical lines pass through the connection module electrically independently of each other. In this variant, the module comprises two first fixed blades 32, independent and electrically insulated from each other, and at least one second deformable blade 33 per electrical line, insulated between each electrical line.

[0122] An alternative fabrication of the second blade 33 is shown at the figure 20 : it is possible to produce a single blade 33 in the form of a single piece which can be housed in two cavities 31 facing each other, with parts 333 elastically deformable independently of each other, for example by creating one or more openings of material 334 between them.

[0123] Another possible configuration with connection modules according to the invention is a connection of several terminations 4 of electrical cable 2 to a busbar or connection bar.

[0124] Such a configuration is illustrated in the figure 21 with three modules 3.1, 3.2, 3.3, preferably identical, arranged parallel to each other. In this illustrated configuration, each module body 30 comprises a single cavity 31 into which a contact 41 of an electrical cable termination 2 is inserted and tightened.

[0125] Each of the first blades 32 includes an extension portion 322 which extends outside the body 30.

[0126] Each body 30 includes a right parallelepiped-shaped extension 302, which supports a portion 322 of a blade 32.

[0127] The parallel electrical connection between the different blades 32 and therefore between the electrical terminations 4 is made by means of a common busbar 6 which is fixed by means of a screw / nut 60 in the extension portion 322 of each blade 32. It is of course possible to consider instead of the screws / nuts 60 a fixing by welding to the busbar.

[0128] To ensure that the contact 41 in a module body 30 is not unlocked, which could occur for example in the event of vibrations, shocks, or other events, a module 3 can be equipped with a locking / unlocking device 7 for the clamping mechanism 5.

[0129] This device 7 is configured to be active when the clamping cam 52 is in its rotation position corresponding to the deformed position of the second blade 33.

[0130] Several advantageous construction options can be considered.

[0131] THE figures 22A et 22B show a first variant of such a device 7 which includes: A hole 70 is made in the interface piece 51, a rigid pin 71 is mounted on a spring 72, preferably a helical compression spring. An adjusting screw 73 allows the spring to be held in the body and its tension to be adjusted.

[0132] This pin 71 with the spring 72 are housed inside the body 30 in such a way that, in the deformed position of the second blade 33, the pin 71 is inserted into the hole 70 with the spring exerting a restoring force on the pin ( figure 22B ). This achieves the locking of the clamping mechanism 5. Its unlocking is achieved by a rotational torque applied to the interface piece 51, which is adapted to overcome the return force of the spring 72 and thus remove the pin 71 from the hole 70 ( figure 22A ).

[0133] THE figures 23A et 23B show a second variant of a device 7 which includes: a groove 73 made in the interface piece 51, a rigid blade 74 on a spring 75, preferably a helical compression spring.

[0134] The rigid blade 74 is partially housed and the spring 75 is housed inside the body 30 such that, in the deformed position of the second blade 33, the free end of the blade 74 is inserted into the groove 73 with the spring exerting a restoring force on the blade ( figure 23B ). This achieves the locking of the clamping mechanism 5. Its unlocking is achieved by pushing on a portion of the blade 74 protruding from the body, which is adapted to overcome the return force of the spring 75 and thus remove the blade 74 from the groove 73 ( figure 23A ).

[0135] THE figures 24A et 24B show a third variant of a device 7 which includes: at least one pin 76 made at the periphery of the interface piece 51, a spring 760, preferably a helical compression spring, housed inside the cam 52.

[0136] In the deformed position of the second blade 33, the spring 760 pushes the interface piece 51 upwards outwards from the body 30. The pin 76 of this interface piece is housed in a vertical groove in the body. When the pin 76 is housed in the vertical groove of the body, the rotation of the interface piece 51 and the cam 52 is blocked.

[0137] To release the contact, an operator presses vertically downwards with a tool into the recess 54 of the interface piece 51. This pushes the interface piece into the body and compresses the spring 760. Simultaneously, the pin 76 of the interface piece disengages from its housing and fits into a horizontal circular groove in the body. The rotation of the interface piece 51 then becomes possible, causing the cam 52 to rotate, thus returning the second blade 33 to its rest position and releasing the contact.

[0138] This unlocks the clamping mechanism 5 ( figure 24A ).

[0139] THE figures 25A et 25B show a fourth variant of a device 7 which includes: a slot 77 made on an outer face of the body, at the periphery of the interface piece, a flexible tab 78, integral with or made entirely with the interface piece such that, in the deformed position of the second blade 33, the free end of the tab 78 fits into the slot 77 ( figure 25B ). This achieves the locking of the clamping mechanism 5. Its unlocking is achieved by releasing the free end of the lug 78, adapted to overcome the return force of the flexible lug ( figure 25A ). Another slot 79 can be provided to house this free end in the loosened position of the contact 41 corresponding to the rest position of the blade 33.

[0140] THE figures 26 et 26A show connection module according to another embodiment of the invention with two bodies 30 fixed together, each intended to house a contact 41 of an electrical cable termination 4.

[0141] According to this alternative mode, a locking / unlocking device 8 is provided for the clamping mechanism 5, once the contact 41 is in the inserted position in a cavity 31 of a body 30. The device 8 also allows the detection of the insertion of a termination in the correct longitudinal position in the housing.

[0142] As illustrated, the bodies 30 are also fixed to a support rail 9 which is itself fixed to a structure, such as an aircraft structure.

[0143] In this mode, the sleeve 41 includes a peripheral groove 46.

[0144] The locking and securing device for this locking 8 includes firstly a plate 80 fixed preferably by screwing onto the body 30.

[0145] An interface piece 81 is mounted for free rotation in a recess in the body 30. This piece 81 is cylindrical with a flat, thus forming a cam. This cam 81 can be rotated by a tool, using a recess that may be standard. The interface piece 81 is held in the recess of the body 30 by the plate 80.

[0146] A locking piece 82, 83 is mounted in translation within the body 30 between a locking position in which a wall 83 of the piece extending transversely to the longitudinal axis X is projecting inside the opening 38 and an unlocking position in which said wall 83 is recessed from the inside of the opening 38. In this unlocking position, a contact 40 can therefore be freely inserted inside the body 30 to be housed in the cavity 31, since the sleeve 40 can slide freely inside the opening 38, without interfering with the locking piece 82, 83, which is recessed from the inside of the opening 38.

[0147] The locking wall 83 can translate from its unlocked position to its locked position in a groove 84 provided for this purpose in the body 30, by bearing on another wall 82 of the locking piece, in the extension of the wall 83.

[0148] The wall 83 further includes at least one visual indicator 85. This visual indicator 85, in particular in the form of a visible coloured area, is arranged on the outer face of the wall 83 so as to be visible to an operator to indicate the locking or unlocking position of the sleeve 40 and therefore of the contact 41 of the electrical termination 4. Thus, in the illustrated example, the indicator 85 of the wall 83, in the form of a coloured area, is positioned outside the body 30, when the wall 83 is recessed from the opening 38 and therefore in the unlocked position and is no longer visible from the outside, in the protruding position inside the opening 38 and therefore in the locking position of the sleeve 40 by the wall 83.

[0149] Furthermore, the plate 80 may include one or more visual indicators, in particular in the form of engravings or padlock markings to visually indicate the rotation position of the cam 81 as explained later.

[0150] We are now describing with reference to figures 27A à 28B the operation of device 8 to lock the rotation of the clamping mechanism 5, while ensuring detection of insertion in the correct longitudinal position in the body 30 of the termination 4.

[0151] The cam 81 is in a locking position against the wall 82 of the locking piece. The locking position of the wall 82 by the cam 81 indicates that the clamping mechanism 5 is in a partially or fully open / unlocked position. This locking position can be visually indicated to an operator by a visual indicator on the plate. This could be an indicator showing an open padlock. In this locking position, the part 82, 83 is therefore in its unlocked position, i.e., the wall 83 is recessed from the inside of the opening 38.

[0152] As symbolized by the arrow in figure 27B , whether intentional or not, pressure on the wall 82 causes the latter to interfere mechanically with the cam 81.

[0153] Thus, as shown in the figure 29 In this locking position of part 82, 83 which corresponds to its unlocking position, the wall 83 does not protrude inside the opening 38 and therefore a contact 41 can be inserted there to be housed in the cavity 31 of the body 30. In other words, the wall 83 does not obstruct the passage diameter of the sleeve 40.

[0154] The insertion and locking of contact 41 are as follows.

[0155] The contact 41 is inserted by an operator into the opening 38 and into the cavity 31 with the cam 81 and the part 82, 83 in the position of the figure 29 , until there is alignment along the X axis, or in other words, a matching of groove 46 of the sleeve with groove 84 ( figure 30A ). To ensure correct alignment, a skirt 381 can be provided at the front end of the sleeve 40, bearing axially against a surface at the bottom of the opening 38. In this position, the cylindrical part 810 of the cam 81 blocks any inward translation of the part 82, 83

[0156] Once this correct alignment is achieved, the operator can rotate the cam 81 to a stop position which can be indicated by a visual indicator on the plate 80, for example by a closed padlock ( figure 30B ). The rotation of the interface piece 81 causes the clamping mechanism 5 to move, bringing the blade 33 into its deformed clamping position of the contact 41, by means of the translation of the force transmission piece 50. In this position of the cam 81, its flat 811 is opposite a straight part of the wall 82.

[0157] The contact 41 is itself tightened by the blade(s) 32, 33 in at least two areas of direct linear or surface support.

[0158] The operator then presses on wall 82, as symbolized by the arrow in figure 30C , which brings the wall 83 into the locking position in which it is inserted into the groove 46 of the sleeve 40 ( figure 30C ). The visual indicator 85 is then no longer visible from the outside, which indicates to the operator the correct locking position of part 82, 83. The locking of part 82, 83 also indicates to the operator that the sleeve 40 has been previously inserted in its correct longitudinal position in the opening 38. In other words, the locking of part 82, 83 allows the detection of the insertion of the termination 4 in its correct longitudinal position in the module, after the contact 41 has been tightened by the blades 32, 33.

[0159] The locking of the clamping mechanism 5 is further secured because the flat 811 of the cam is opposite a straight portion of the wall 82 ( figure 31 ).

[0160] Thus, in this configuration, if the operator rotates the cam 81, its flat 811 immediately comes to rest against the wall 82, which is in its locking position ( figure 32 ). In other words, the cam 81 cannot be put in an unlocked position which would allow the constraints exerted by the blades 32, 33 on the contact 41 to be released.

[0161] In the configuration of a module where the clamping mechanism 5 is activated and where the part 82, 83 is locked, prior to the insertion of a termination 4 into the module, the operator will not be able to insert the termination into the module, due to the interference between the sleeve 40 and the wall 83. To make it possible to insert a termination into the module, the operator must then, prior to this, bring the part 82, 83 into its unlocking position, and then bring the cam 81 into the unlocking position.

[0162] Other variations and improvements can be envisaged without departing from the scope of the invention.

[0163] Modules of different dimensions with a different number of cavities can be provided to accommodate electrical cable terminations of different sizes.

[0164] It is also possible to provide for the fixing and locking of a connection module in a support rail 9, as shown in the diagram. figures 26 à 32 .

[0165] As can be seen from the description, to achieve the tightening of an electrical termination contact, a connection module can be provided with a single blade, at least part of which is elastically deformable, or with a rigid blade and a deformable blade.

[0166] If in the illustrated examples the cam clamping mechanism is described in relation to the first mode with a rigid blade and an elastically deformable blade while the pivoting lever clamping mechanism is described in relation to a single U-shaped section blade, one can also consider a pivoting lever for the deformation of the clamping blade contacting a rigid blade and a clamping cam to bring the arms of the single U-shaped blade closer together.

[0167] In the illustrated examples, the deformable blade 33 is electrically conductive. An electrically insulating blade can also be considered.

[0168] As shown in figures 26A And 29 Instead of straight grooves 39, one or more protrusions 380, for example molded, may be provided projecting inside the body 30, particularly inside the opening 38, to prevent the sleeve 40 from rotating and thus the contact 41 from sliding once tightened in the connection module. A protrusion 380 may take the form of a molded internal longitudinal rib / groove, which can be inserted between the ribs 42 of the sleeve. A protrusion 380 may also take the form of a cylindrical metal pin inserted through the wall 37 of the body 30, perpendicular to the X-axis.

[0169] The expression "containing one" should be understood as synonymous with "containing at least one", unless otherwise specified.

Claims

1. Electrical connection module (3, 3', 3"; 3.1, 3.2, 3.3) intended to form part of a terminal block of a connection assembly, of longitudinal axis (X), comprising: - at least one body (30) made of electrically insulating material comprising at least one cavity (31) extending along the axis X and designed to accommodate an electric cable termination (4), comprising a preferably cylindrical contact (41) intended to be attached to, preferably crimped onto, an electric cable (2); - at least one strip (32, 33), comprising at least one part of a strip which is electrically conductive and accommodated, fixedly or with play, at least partially in the cavity, and at least one part of a strip which is elastically deformable between a rest position, in which it defines a space designed to enable the insertion of the contact of the electric cable termination along the axis X, and a deformed position in which it clamps the contact of the electric cable termination transversely to the axis X so as to establish electrical continuity between the contact and the one or more strips; - at least one clamping mechanism (5) intended to be actuated by rotation from the outside, comprising a means for converting a rotational movement into a translational movement transversely to the axis X, which exerts a force (F) on the deformable part of the strip to bring it from its rest position to its deformed position of clamping the contact of the electric cable termination, the connection module being characterized by the one or more strips being shaped so as to form at least two areas of direct linear or surface contact with the contact of the electric termination in the deformed position, the at least two contact areas being, preferably regularly, angularly distributed around the periphery of the contact.

2. Electrical connection module according to Claim 1, comprising a single strip with a substantially U-shaped cross section transversely to the axis X.

3. Electrical connection module according to Claim 2, the clamping mechanism (5) comprising a lever mounted pivotably in the body and accessible from the outside so as to deform at least one of the two arms of the U and thus bring it from its rest position to its deformed position.

4. Electrical connection module according to Claim 1, comprising at least one electrically conductive, rigid first strip (32) accommodated in the cavity, and at least one electrically conductive second strip (33) accommodated in the cavity and comprising at least one part which is elastically deformable between the rest position and the deformed position.

5. Electrical connection module according to Claim 4, the clamping mechanism (5) comprising: - a force transmission component (50) accommodated in the body, - an interface component (51) for a tool, this interface component being freely rotatably mounted in a receiving portion (34) of the body and designed to be made to rotate by the tool, - a clamping cam (52) secured to or integrally formed with the interface component, the rotation of the clamping cam causing the force transmission component to move in translation transversely to the axis X, which exerts a force (F) on the second strip to bring it from its rest position to its deformed position of clamping the contact of the electric cable termination.

6. Electrical connection module according to either of Claims 4 and 5, the force transmission component comprising a locking portion (53) designed to be inserted, while said component is moving in translation, into a peripheral recess of the contact of the electric termination and thus lock the latter in the body, preferably before or at the same time as the contact is clamped.

7. Electrical connection module according to one of Claims 4 to 6, the clamping cam being rotatably mounted between two arms (320, 321) of the first strip.

8. Electrical connection module according to one of Claims 5 to 7, the force transmission component additionally comprising a return portion for returning the second strip to its rest position, during the unclamping operation after the contact is unlocked.

9. Electrical connection module according to one of Claims 4 to 8, comprising a locking / unlocking device (7, 8) for locking / unlocking the clamping mechanism, when the clamping cam (52, 81) is in its rotational position corresponding to the deformed position of the second strip.

10. Electrical connection module according to Claim 9, the locking / unlocking device comprising: - an interface component (81) for a tool (H), this interface component being freely rotatably mounted in a receiving portion of the body and designed to be made to rotate by the tool, the interface component being a cylindrical component provided with a flattened portion (811), thereby forming a cam, - a locking component (82, 83), of which one wall (83) extends transversely to the longitudinal axis X and which is mounted movably in translation in the body (30) between a clamping-mechanism locking position and an unlocking position, the locking component (82, 83) being arranged relative to the interface component (81) such that, when the latter is: in its unlocking position, the cylindrical part of the cam (81) mechanically interferes with another wall of the component, thereby preventing it from transitioning to its locking position, in its locking position, any rotation of the cam (81) brings its flattened portion (811) into abutment against a straight portion of said other wall (82) of the locking component, thereby preventing it from transitioning to its unlocking position.

11. Module according to Claim 10, when the component is in its locking position, the wall (83) protrudes into an opening (38), and when the component is in its unlocking position, said wall (83) is set back from the inside of the opening (38), the wall (83) being designed to be inserted into a transverse recess of the sleeve (40) of the electric termination and thus lock the latter in the body, preferably after or at the same time as the contact is clamped.

12. Electrical connection module according to one of the preceding claims, the body comprising an opening (38) which is next to the cavity and is provided on the inside with at least one protuberance (380), or a plurality of longitudinal straight, preferably angularly regularly distributed, grooves (39) each designed to respectively be received between two adjacent ribs of the sleeve (40) of the electric cable termination, or receive a straight spline (42) formed around the sleeve.

13. Electrical connection module according to one of the preceding claims, the strip comprising a portion (322) extending out of the body and designed to be electrically connected to a busbar (6) by welding or screwing.

14. Electrical connection module according to one of Claims 4 to 12, comprising: - two aligned or side-by-side bodies fixed to one another or forming a single one-piece component, - a single first strip common to the cavities of the two bodies, - at least two second, mutually independent strips, each for clamping a contact, - at least two mutually independent clamping mechanisms.

15. Electrical connection module according to one of Claims 4 to 12, comprising: - two aligned or side-by-side bodies fixed to one another or forming a single one-piece component, - a single first strip common to the cavities of the two bodies, - a single second strip comprising multiple independent, deformable parts, each for clamping a contact, - at least two mutually independent clamping mechanisms.

16. Terminal block connection assembly comprising a plurality of electrical connection modules (3.1, 3.2, 3.3) according to one of the preceding claims, of identical or different dimensions with cavities of identical or different dimensions for accommodating electric terminations of identical or different dimensions.

17. Structure, in particular for an aircraft, comprising at least one electrical connection module according to one of Claims 1 to 15 and / or at least one terminal block connection assembly according to Claim 16, preferably fixed on a rail support (9), which is itself intended to be fixed to the structure.