EP3937192A1 - Method for manufacturing an electrical harness - Google Patents

Abstract

The present invention relates to a method of manufacturing an electrical harness (30) comprising a reference member (31) and a secondary member (32) as well as at least one electrical wire (22), a protective sheath (34) and at least two shrink sleeves (36, 37) comprising a reference shrink sleeve (36) and a secondary shrink sleeve (37). According to the invention, the method comprises at least the following steps: assembly of the electric wire (22 ), the protective sheath (34), the two shrink sleeves (36, 37), the reference member (31) and the secondary member (32), the two shrink sleeves (36, 37) being arranged in an unrestricted state, • in a reference portion (131) of said electrical harness (30), reference constriction of the reference retractable sleeve (36), • in a secondary portion (132) of said electrical harness (30), angular positioning of the secondary member (32) according to a relative angular orientation (θ1), • maintaining position of the secondary member (32'), and• secondary constriction of the secondary shrink sleeve (32).

Description

The present invention relates to the field of the manufacture of electrical harnesses. Such electrical harnesses comprise at least one electrical wire extending between at least two connectors. The electric wire(s) are also covered by at least one protective sheath making it possible to protect the electric wire(s) from friction or from any contact with a foreign body.

The connectors are intended to cooperate with electrical equipment or with other electrical harnesses and can be covered at least partially by shrink sleeves. Such retractable sleeves can in fact be arranged in at least partial overlapping of both one end of a protective sheath and of a connector or in at least partial overlapping of several portions of protective sheaths in the case of a derivation. These retractable sleeves, once retracted, thus make it possible to impart a dust-tight and/or water-tight character to these connections.

In addition, once the shrink sleeves have been retracted during a shrinking operation, for example thermal, or possibly during an operation for crosslinking an adhesive, a putty or the like, the connectors and the at least one sheath are rigidly related to each other. Thus, a rotation of a connector relative to the longitudinal axis along which the at least one sheath extends can cause torsional stresses on this sheath, or even a plastic deformation of the latter when the shear stresses exceed a threshold value.

Generally in the aeronautical field, such electrical harnesses are made from a first physical model of a model electrical harness made directly on a model aircraft. Next, the model electrical harness is dismantled from the model aircraft and one or more specific tools are manufactured, such as counterforms with which the model electrical harness cooperates in a complementary manner.

This specific type of tool is designed to hold the connectors during the shrinking phase of the retractable sleeves, so that the connectors and/or the protective sheath are not deformed during subsequent assembly of the electrical harness on an aircraft. For this, the tool has, at each of the connectors, a position and an orientation predetermined beforehand during the modeling phase.

This type of tool can then form a sub-assembly, called a module, of a modular system making it possible to manufacture a complete harness.

Generally, an operator has the different modules on a modular table in order to constitute a tooling system called for convenience “complete tooling” as opposed to the previous notion of specific tooling. The technical sheet for manufacturing a harness lists the references of the different modules to be used as well as the respective locations in which they must be arranged on the modular table.

The modules constrain in particular the relative angular orientation of the various connectors and of the various branch sleeves with respect to the longitudinal axis of the various branches of the electrical harness before the shrinking phase of the retractable sleeves.

Such complete tooling makes it possible to process all the dimensional parameters of the electrical harness in one go. such as in particular the length of the branches as well as the relative angular orientation of the connectors and of the branch sleeves with respect to the at least one protective sheath.

The angular values of the radial orientations of the connectors and of the branch sleeves with respect to the at least one protective sheath are not specified in the working document indicating to the operator the manufacturing phases of an electrical harness. These angular values are indeed imposed and fixed by the various modules.

However, some modules may be specific to a particular type and orientation of a connector or branch sleeve. The number of modules required can be considerable depending on the one hand on the number of different electrical connectors and branch sleeves to be positioned on the same electrical harness and on the other hand on the number of different electrical harnesses that can be manufactured for the same aircraft and/or for several different aircraft. This can pose problems in terms of storage and management of these different modules or in the case of specific complete tools which cannot be broken down into several modules.

In addition, the time required to find and set up the various modules on the modular table is not negligible. Similarly, once the manufacture of an electrical harness has been completed, it may be necessary to dismantle all the modules of the modular table, identify them and store them each in a well marked location for possible later reuse.

Moreover, such specific modules or complete tools also impose significant financial costs related to their development, study and realization. In addition, any modification of definition affecting the relative angular orientation of a connector with respect to a sheath imposes the modification of the module concerned or of the specific complete tooling, which in fact impacts the cost and the production cycle.

Finally, in the event of a problem mounting the electrical harness on an aircraft, the cause of the problem cannot be determined without proceeding to disassemble the harness from the aircraft and without putting it back in place on the tool which serves as a template. .

The documents JP3959006 and US 7,529,638 describe methods of manufacturing an electrical harness comprising at least three connectors and at least one branch with three branches. Such an electrical harness can therefore have a three-dimensional geometry but is produced on a plane along two axes. Thus, a manufacturing phase is described using a predetermined angle measured in this work plane.

However, a harness is manufactured flat with this predetermined angle between the three branches, the orientation of the various connectors with respect to each section of sheath can then be modified during subsequent assembly by the other sections of protective sheaths oriented differently. Shearing stresses generated by the torsional stresses may therefore appear in the various branches on the protective sheath and/or on the connectors and the derivations.

The document US 9,090,215 describes an electrical harness comprising a branch with three branches to orient wires according to a single predetermined relative orientation.

The document WO 2019/234080 relates in turn to a modular molding tool (1) of a cable strand (10) to make a protective sheath all along the strand and thus form a harness. This tool (1) comprises complementary half-modules (2a; 3a; 4a) assembled in standard modules (2) as well as extension branch modules respectively in the same median plane (PM) and, in appropriate cases, in a direction (Z'Z) outside this median plane (PM), the half-modules (2a; 3a; 4a) having the overall shapes of a straight and angled block. Each half-module (2a; 3a; 4a) has an internal half-bore (9) forming, with the half-bore of the complementary half-module, a cylindrical bore surrounding the strand (10) along straight and angled sections ( 9), and a double cylindrical bore (9; 93D) along sections of the strand (10) branching off (11). The adjacent half-modules (2a; 3a; 4a) of consecutive modules are coupled together by contiguous and detachable mechanical links (7a; 7b).

This document WO 2019/234080 also describes a method of manufacturing an electrical harness comprising at least one electrical wire and at least one protective sheath. Such a method comprises a step of injecting a primary sheathing material into the tooling to fill the gap between the bore (9) of the overmolding modules and the strand (10). The method then then comprises a step of heat treatment of the primary material to form the protective sheath.

Therefore, such a method makes it possible to shape the harness three-dimensionally, that is to say to produce bends or derivations with predetermined angles for the different branches.

However, such a process does not make it possible to orient the connectors and the branches according to a twist angle of each branch, in particular at the level of the straight connectors.

The document FR 2 937 471 describes an aircraft electrical harness comprising a sealing sheath (40) arranged around an end zone (20') of a metal braid (20) and a clamping collar (50).

Furthermore, to manufacture harnesses, it is also known to use methods as described in the documents EP 0 924 713 , EP 3 480 909 or in the article "Robotic Assembly of Automotive Wire Harnesses" published by Xin Yang on July 1, 2014 and available on the website https://www.assemblymag.com/articles/92264-robotic-assembly-of automotive-wire- harnesses. Although these methods may include steps making it possible to immobilize a connector or to produce a seal, they do not however make it possible to eliminate the torsional stresses in the sheaths, these stresses then being generated during the assembly of the harness on an aircraft when the angular orientation of a female connector, for example, does not correspond with the angular orientation of a complementary male connector.

The object of the present invention is therefore to propose an alternative manufacturing method making it possible to overcome the limitations mentioned above. In addition, such a manufacturing method can make it possible not to need many different modules, or even a modular table to manufacture different electrical harnesses. It also makes it possible to limit or even guarantee the absence of any torsion stress generated during the assembly of the electrical harness in the protective sheath(s), the derivations and/or the connectors.

The invention therefore relates to a method of manufacturing an electrical harness, this electrical harness comprising at least one reference member and at least one secondary member as well as at least one electrical wire extending between the at least one reference member and the at least one secondary member. The harness comprises at least one protective sheath to protect the at least one electrical wire and at least two retractable sleeves, the at least two retractable sleeves comprising at least one reference retractable sleeve and at least one secondary retractable sleeve, the at least one reference shrink sleeve being arranged overlapping at least partially the at least one reference member and the at least one protective sheath, the at least one secondary shrink sleeve being arranged overlapping at least partially the at least one secondary member and the at least one protective sheath.

• assemblage du au moins un fil électrique, de la au moins une gaine de protection, des au moins deux manchons rétractables, du au moins un organe de référence et du au moins un organe secondaire, les au moins deux manchons rétractables étant agencés dans un état non retreint,
• dans une portion de référence du harnais électrique, retreint de référence du au moins un manchon rétractable de référence, l'étape de retreint de référence permettant d'immobiliser la au moins une gaine de protection relativement par rapport audit au moins un organe de référence, le au moins un organe de référence permettant d'assigner au moins un plan de référence au harnais électrique,
• dans une portion secondaire du harnais électrique distincte de la portion de référence, positionnement angulaire du au moins organe secondaire par rapport au plan de référence selon une orientation angulaire relative, l'orientation angulaire relative étant définie dans un plan perpendiculaire à une direction longitudinale OX selon laquelle s'étend longitudinalement la au moins une gaine de protection en regard du au moins un organe secondaire,
• maintien en position du au moins un organe secondaire dans l'orientation angulaire relative, et
• retreint secondaire du au moins un manchon rétractable secondaire.

According to the invention, such a method is remarkable in that it comprises at least the following steps:

• assembling the at least one electric wire, the at least one protective sheath, the at least two retractable sleeves, the at least one reference member and the at least one secondary member, the at least two retractable sleeves being arranged in a state unrestricted,
• in a reference portion of the electrical harness, reference shrinkage of at least one reference retractable sleeve, the reference shrinkage step making it possible to immobilize the at least one protective sheath relatively with respect to said at least one reference member, the at least one reference device making it possible to assign at least one reference plane to the electrical harness,
• in a secondary portion of the electrical harness separate from the reference portion, angular positioning of the at least secondary member with respect to the reference plane according to a relative angular orientation, the relative angular orientation being defined in a perpendicular plane to a longitudinal direction OX in which the at least one protective sheath extends longitudinally facing the at least one secondary member,
• keeping the at least one secondary member in position in the relative angular orientation, and
• secondary shrinkage of the at least one secondary shrink sleeve.

In other words, such a manufacturing method is applicable to any electrical harness comprising two or more connectors when this harness has branches. The reference member and the secondary member can be chosen from the group comprising the connectors and the derivations.

The expression “shrinkable sleeve” can designate either a heat-shrinkable sleeve or any other type of sleeve making it possible to achieve a seal at the level of a connection between on the one hand a reference member or a secondary member and on the other hand a protective sheath. Thus, a retractable sleeve may comprise a sleeve secured by a bonding process by means of a bonding intermediary such as an adhesive or a putty interposed between this sleeve, the reference or secondary member and the protective sheath. Another type of retractable sleeve can also be tightened mechanically on the reference or secondary member and the protective sheath, such as a cable gland for example.

The reference constriction of a retractable sleeve covering at least partially the reference member and the at least one sheath makes it possible to secure the reference member and the at least one protective sheath in rotation. The positioning of this reference member then makes it possible to identify a reference plane of the electrical harness.

When the reference member is a straight connector then the reference plane can be defined as being a plane perpendicular to a radial direction passing, for example, through a lug or keying device of the connector.

When the reference member is an elbow connector then the reference plane can be defined as being a plane perpendicular to a radial direction passing through the elbow of the connector or even as being a plane perpendicular to a projection of this radial direction passing through the elbow on a transverse plane YOZ.

Finally, when the reference member is a derivation then the reference plane can be defined as being a plane in which coplanar branches of the derivation are inscribed.

Such a manufacturing method thus comprises one or more shrinking steps called “reference shrinking” for convenience in order to be easily distinguishable from one or more other shrinking steps called “secondary shrinking” for convenience. In addition, the expressions "reference shrinkage" and "secondary shrinkage" may consist of heating, gluing, masticating or even mechanically tightening a retractable sleeve comprising a cable gland on the reference or secondary member and the sheath protection. These different shrinking steps then make it possible to guarantee sealing at the level of the connections between a protective sheath and the reference or secondary member.

Such necking steps are thus carried out sequentially one after the other precisely in the order beginning with a reference necking then at least one secondary necking.

According to relative angular orientation information contained on a definition drawing of the electrical harness to be manufactured, an operator can then orient a secondary member such as for example a connector in the secondary portion of the electrical harness with respect to the protective sheath arranged in gaze and therefore relative to the reference plane previously defined in the reference portion of the electrical harness.

As already indicated, the reference shrinking and secondary shrinking steps can for example be carried out by heating the shrink sleeves by means of a heating device, for example using an electrical resistance and a fan to generate a flow of air passing close to the heating resistor then oriented towards a shrink sleeve.

The angular positioning and the maintenance in position of the at least one secondary member can be achieved in different ways, for example manually by an operator or by means of a tool able to orient the secondary member in a relative angular position between 0 and 360 degrees around the OX longitudinal direction of the protective sheath. Such a relative angular position makes it possible to define a particular angle of twist for each branch or for each connector which may in particular have a foolproof device.

In addition, the relative angular orientation between the at least one secondary member and the reference plane can advantageously be read or noted by the operator on the definition drawing of the electrical harness to be manufactured. For each secondary member and each relative angular orientation, the operator can use one and the same tool making it possible to orient, one after the other, each secondary member in a different way.

Advantageously, the method may include a preliminary step of determining the relative angular orientation.

Such a preliminary step can therefore be implemented to generate a definition drawing of the electrical harness and allow the operator to read or record the various relative angular orientation values to be given subsequently to at least one secondary member.

Such a preliminary step can also be implemented in different ways and for example by simulation, tests, trials or calculations.

In practice, this preliminary step can be carried out by manufacturing directly on a model aircraft a model electrical harness, the model electrical harness being distinct from the electrical harness and comprising at least one model secondary component, at least one model reference component, at least one model electric wire extending between the at least one model secondary member and the at least one model reference member, at least one model protective sheath to protect the at least one model electric wire and at least two model shrink sleeves, the at least at least two model shrink sleeves comprising at least one model reference shrink sleeve and at least one model secondary shrink sleeve, the at least one model reference shrink sleeve being arranged overlapping at least partially the at least one model reference member and the at least one model protective sheath, the at least one model secondary shrink sleeve being arranged in at least partially covering the at least one model secondary member and the at least one model protective sheath.

In other words, the model electrical harness is a different electrical harness than the one made from the manufacturing process, but is dimensionally and structurally identical. The model electrical harness is manufactured prior to the electrical harnesses and allows an operator to produce a definition drawing of the electrical harnesses to be manufactured later.

• repérage d'une ligne de référence sur la au moins une gaine de protection modèle au moyen de repères agencés sur la au moins une gaine de protection modèle,
• assemblage préliminaire du au moins un fil électrique modèle, de la au moins une gaine de protection modèle, des au moins deux manchons rétractables modèle, du au moins un organe secondaire modèle et du au moins un organe de référence modèle, les au moins deux manchons rétractables modèles étant agencés dans un état non retreint, la sous étape d'assemblage préliminaire étant réalisée sur un plan de travail,
• dans une portion de référence modèle du harnais électrique modèle, retreint de référence préliminaire permettant d'assigner un plan de référence modèle au harnais électrique modèle, le plan de référence modèle étant défini au moyen des repères agencés sur la au moins une gaine modèle,
• mise en place du harnais électrique modèle sur l'aéronef modèle et connexion d'au moins un organe secondaire modèle avec au moins un équipement électrique de l'aéronef modèle,
• dans une portion secondaire modèle du harnais électrique modèle distincte de la portion de référence modèle, retreint secondaire préliminaire du au moins un manchon rétractable secondaire modèle, et
• mesure de l'orientation angulaire relative entre les repères agencés sur la au moins une gaine de protection modèle et le au moins un organe secondaire modèle.

In addition, this preliminary step may include the following sub-steps:

• identification of a reference line on the at least one model protective sheath by means of markers arranged on the at least one model protective sheath,
• preliminary assembly of the at least one model electrical wire, of the at least one model protective sheath, of the at least two model retractable sleeves, of the at least one model secondary member and of the at least one model reference member, the at least two sleeves retractable models being arranged in an unrestricted state, the preliminary assembly sub-step being carried out on a work surface,
• in a model reference portion of the model electrical harness, preliminary reference constriction making it possible to assign a model reference plane to the model electrical harness, the model reference plane being defined by means of the markers arranged on the at least one model sheath,
• installation of the model electrical harness on the model aircraft and connection of at least one model secondary component with at least one electrical equipment of the model aircraft,
• in a model secondary portion of the model electrical harness distinct from the model reference portion, tapered preliminary secondary of the at least one model secondary shrink sleeve, and
• measurement of the relative angular orientation between the markers arranged on the at least one model protective sheath and the at least one model secondary member.

In other words, the location sub-step makes it possible to identify a rectilinear orientation on the at least one model protective sheath. This identification can for example be carried out by adding markers to a conventional sheath or even by using a sheath pre-equipped with such a reference line.

The model reference member is then angularly oriented with respect to the sheath to define the model reference plane in the model reference portion.

In the model secondary portion, the model secondary member and the model protective sheath are then still free to pivot relative to each other and consequently no torsional stress is transmitted to the at least one sheath of model protection.

Once the preliminary reference restriction has been made, the model protective sheath is then immobilized with respect to the model reference member but also with respect to the model secondary member which is mounted on electrical equipment of the model aircraft. The preliminary secondary constriction then makes it possible to fix the relative angular orientation between this model secondary member and the at least one model protective sheath. It is then optionally possible to disconnect the model secondary unit from the electrical equipment.

According to a first exemplary embodiment of the invention, the sub-step of measuring the relative angular orientation can be put implemented by leaving the model electrical harness fully mounted on the model aircraft.

Indeed, a measuring tool can be used directly on the model aircraft to record the different angular orientations. Such a measurement sub-step then allows an operator to take a quick reading and allows the model electrical harness to then be used directly on the model aircraft. Only the model secondary unit(s) can be temporarily disconnected from the electrical equipment to perform this measurement sub-step.

According to a second exemplary embodiment of the invention, the preliminary step may comprise a sub-step of dismantling the model electrical harness outside the model aircraft, the sub-step of measuring the relative angular orientation being implemented after the dismantling sub-step.

In this case, the sub-step of dismantling the model electrical harness can allow an operator to carry out the measurement sub-step outside the model aircraft and consequently to measure relative angular orientations that are difficult to access, or even impossible to achieve, when the model electrical harness is mounted on the model aircraft.

Furthermore, the at least one reference member can take several forms.

According to a first variant of the invention, the at least one reference member may comprise a reference connector, the at least one reference plane corresponding to a plane defined according to a position of the reference connector.

The position of the reference connector is then determined by means of a reference relative angular orientation with respect to to the at least one protective sheath. For example, the reference connector being of substantially cylindrical and straight shape, a lug or keying device provided on or in the reference connector thus makes it possible to identify its position prior to the reference restriction. Such a polarizer is therefore radially offset with respect to a central axis of the reference connector.

According to another example, the reference connector can be bent at 90 degrees. In this case, the angular orientation of the elbow in azimuth relative to the longitudinal direction OX of the protective sheath makes it possible to locate the orientation of the reference plane relative to this elbow.

According to a second variant of the invention, the at least one reference member may comprise at least one three-branch branch, the at least one reference plane corresponding to a plane containing the three branches of the at least one three-branch branch .

In other words, the three branches of a derivation are oriented along three coplanar directions defining the reference plane.

In addition, the at least one reference member may comprise two three-branch derivations comprising a first derivation and a second derivation, the at least one reference plane comprising a first reference plane and a second reference plane, the at least one reference shrink sleeve comprising a first reference shrink sleeve and a second reference shrink sleeve, the first reference shrink sleeve being arranged overlapping at least partially one at least of the three branches of the first branch and the at least one protective sheath, the second reference shrink sleeve being arranged overlapping at least partially of at least one of the three branches of the second branch and of the at least one protective sheath.

More precisely, the first and second reference shrink sleeves can respectively form two monolithic assemblies simultaneously covering the three branches of the first derivation and of the second derivation. Two reference restriction steps are then carried out in this case and make it possible to assign a first reference plane then a second reference plane to the various sections of the electrical harness.

The two reference shrinking steps are carried out following a precise order which can for example be defined from left to right on a manufacturing plan of the electrical harness.

Once the first reference shrinkage has been performed on the reference shrink sleeve, two secondary shrinkage steps can be performed on two secondary shrink sleeves cooperating with two protective sheaths. The third branch of the first derivation cooperates for its part with a first end of an intermediate protective sheath. The second end of this intermediate protective sheath cooperates for its part with one of the three branches of the second derivation.

In this case, the shrinking step of the shrink sleeve arranged at the level of the second bypass is both a secondary shrinking step with respect to the first reference step and a second reference step with respect to other branches each cooperating with a secondary member formed by a connector.

Thus, this second step of reference shrinkage is then followed by two steps of angular positioning of the two secondary members with respect to two protective sheaths, of two steps of holding these secondary members and the protective sheaths in position and two secondary shrinking steps to shrink the two secondary shrink sleeves remaining in an unrestricted state at the level of the last two secondary members.

The present invention also relates to a tool configured to at least angularly position and maintain in position at least one secondary member relative to at least one protective sheath according to a relative angular orientation and to participate in the manufacture of an electrical harness according to the aforementioned process.

Such a tool can also make it possible to take measurements of the relative angular orientation of the various secondary members of a model electrical harness. This tool also makes it possible to carry out the control of the relative angular orientations once the electrical harness has been manufactured. Such a check can in particular be useful prior to mounting the electrical harness on an aircraft or during mounting if a problem is identified.

In addition, such a tool can make it possible to check a relative angular orientation once the electrical harness has been completely mounted on an aircraft without requiring it to be removed from the aircraft.

• un plateau fixe de forme plane,
• au moins un dispositif d'immobilisation pour immobiliser une gaine de protection du harnais électrique et rendre la gaine de protection solidaire du plateau fixe,
• une pièce mobile en rotation autour d'un axe de rotation, l'axe de rotation étant agencé parallèlement par rapport au plateau fixe,
• au moins un support d'immobilisation configuré pour immobiliser l'organe secondaire d'un harnais électrique et rendre ledit organe secondaire solidaire avec la pièce mobile, et
• une échelle angulaire graduée pour positionner, selon l'orientation angulaire relative, la gaine de protection et l'organe secondaire.

Advantageously, such a tool can comprise:

• a flat fixed plate,
• at least one immobilizing device for immobilizing a protective sheath of the electrical harness and making the protective sheath integral with the fixed plate,
• a part that rotates about an axis of rotation, the axis of rotation being arranged parallel to the fixed plate,
• at least one immobilization support configured to immobilize the secondary component of an electrical harness and make said secondary component integral with the moving part, and
• a graduated angular scale for positioning, according to the relative angular orientation, the protective sheath and the secondary member.

The rotatable part thus makes it possible to pivot a secondary member with respect to the axis of rotation inscribed in the reference plane.

The reference plane is itself arranged parallel to the fixed plate of the tool.

In practice, the tool may comprise an angular locking means for locking the movable part in position with respect to the fixed plate.

Thus, the maintenance in angular position of the secondary member is achieved using this angular locking means. Such an angular locking means may for example comprise an indexing finger, a clamping piston, a ratchet device, etc.

According to another example, the tool may include at least one guide bearing to guide the movable part in rotation relative to the fixed plate.

This or these guide bearings make it possible in particular to reduce the friction between the moving part and the fixed plate during rotation of the moving part.

Advantageously, the tool may comprise a fixed disc secured to the fixed plate, the fixed disc comprising, to indicate the relative angular orientation, either the graduated angular scale or an index radial intended to be arranged facing the graduated angular scale.

In other words, the graduated angular scale or the radial index can be arranged on the fixed disc to enable at least one operator to position the secondary member according to the relative angular orientation.

Alternatively or additionally, the movable part may comprise a movable disk comprising, to indicate the relative angular orientation, either said graduated angular scale or a radial index intended to be arranged facing the graduated angular scale.

In this case, the movable disk has an axis of rotation coinciding with an axis of revolution of the fixed disk. The rotation of the movable disk allows the radial index or the graduated angular scale to move respectively relative to the graduated angular scale or the radial index.

In practice, the moving part may comprise a moving plate, the at least one immobilization support being mounted on the moving plate.

The positioning of such a mobile plate on a mobile disc can be adjustable in the plane defined by the mobile disc. Such a mobile plate can for example make it possible to adapt the position of an immobilization support according to the type of secondary organ to be immobilized.

The movable plate can also be retractable with respect to the movable disk, for example to replace an immobilization support depending on the type of secondary organ to be immobilized. Reversible securing means such as screws and/or nuts or a ball and socket locking system springs then make it possible to carry out rapid dismantling of the mobile plate.

In addition, the fixed disc and the movable disc each have a through orifice allowing the secondary member and/or the protective sheath to pass through the tool.

• la figure 1, une vue en perspective d'un premier exemple de réalisation de harnais électrique fabriqué selon un procédé de fabrication conforme à l'invention,
• la figure 2, une vue de dessus d'un deuxième exemple de réalisation de harnais électrique fabriqué selon le procédé de fabrication conforme à l'invention,
• la figure 3, une vue en perspective d'un troisième exemple de réalisation de harnais électrique fabriqué selon le procédé de fabrication conforme à l'invention,
• la figure 4, une autre vue en perspective d'une variante du premier exemple de réalisation de harnais électrique fabriqué selon le procédé de fabrication conforme à l'invention,
• la figure 5, un logigramme illustrant une première variante du procédé de fabrication conforme à l'invention,
• la figure 6, un logigramme illustrant une seconde variante du procédé de fabrication conforme à l'invention,
• la figure 7, une vue en perspective d'un harnais électrique modèle fabriqué lors d'une étape préliminaire du procédé de fabrication conforme à l'invention,
• la figure 8, un schéma illustrant un autre exemple d'étape préliminaire du procédé de fabrication conforme à l'invention, et
• la figure 9, une vue en perspective d'un outil pour fabriquer un harnais électrique, conformément à l'invention.

The invention and its advantages will appear in more detail in the context of the following description with examples given by way of illustration with reference to the appended figures which represent:

• the figure 1 , a perspective view of a first embodiment of an electrical harness manufactured according to a manufacturing method in accordance with the invention,
• the figure 2 , a top view of a second embodiment of an electrical harness manufactured according to the manufacturing method in accordance with the invention,
• the picture 3 , a perspective view of a third embodiment of an electrical harness manufactured according to the manufacturing method in accordance with the invention,
• the figure 4 , another perspective view of a variant of the first embodiment of an electrical harness manufactured according to the manufacturing method in accordance with the invention,
• the figure 5 , a flowchart illustrating a first variant of the manufacturing method in accordance with the invention,
• the figure 6 , a flowchart illustrating a second variant of the manufacturing method in accordance with the invention,
• the figure 7 , a perspective view of a model electrical harness manufactured during a preliminary stage of the manufacturing process in accordance with the invention,
• the figure 8 , a diagram illustrating another example of a preliminary step of the manufacturing process in accordance with the invention, and
• the figure 9 , a perspective view of a tool for manufacturing an electrical harness, in accordance with the invention.

As already mentioned, the invention relates to a method of manufacturing an electrical harness intended to equip an aircraft, for example. The invention may also relate to a method of manufacturing an electrical harness in fields other than that of aeronautics.

The elements present in several separate figures may, where appropriate, be assigned a single reference.

As depicted at figure 1 , such an electrical harness 30 comprises at least one electrical wire 22 extending between a reference member 31 formed in this example by a straight connector and a secondary member 32 formed by a connector bent at 90° in this variant of the first example of production of electrical harness 30.

Such an electric wire 22 is also protected by a protective sheath 34. A first end of this protective sheath 34 cooperates with the reference member 31 in a reference portion 131. A second end of the protective sheath 34 cooperates meanwhile with the secondary member 32 in a secondary portion 132.

To make such an electrical harness 30 waterproof, retractable sleeves 36, 37 are also used and shown on the figure 1 in an unrestricted state. Thus, in a reference portion 131, a retractable reference sleeve 36 is placed in partial overlap with the reference member 31 and the protective sheath 34. Similarly, in a secondary portion 132, a secondary sleeve 37 is placed partially overlapping the secondary member 32 and the protective sheath 34.

A reference shrinkage of the reference retractable sleeve 36 is then produced, for example by heating the reference retractable sleeve 36, to heat-shrink it and thus to immobilize the protective sheath 34 with respect to the reference member 31. then, this operation makes it possible to define a reference plane P1. Such a reference plane P1 is here oriented perpendicular to a radial direction related to the orientation of the reference member 31.

The secondary member 32 is then capable of pivoting around a longitudinal direction OX of a relative angular orientation θ1 with respect to the protective sheath 34, and therefore with respect to the reference plane P1 which was previously assigned to it in the reference portion 131.

Once oriented, the secondary member 32 and the protective sheath 34 are then held in position and a secondary shrinkage of the secondary retractable sleeve 37 can be carried out, for example by heating the secondary retractable sleeve 37 to retract the secondary retractable sleeve 37, in order to immobilize the secondary member 32 with respect to the protective sheath 34 and to the reference plane P1.

As depicted at figure 2 , an electrical harness 40 according to a second embodiment comprises at least one electrical wire 22, 22' extending between a reference member 41 formed in this example by a tap with three coplanar branches and three secondary members 42, 42', 42" formed by straight or angled connectors.

Such an electric wire 22, 22' is moreover protected by three sections of the protective sheath 44, 44', 44". A first end of each protective sheath 44, 44', 44" cooperates with the reference member 41 in a reference portion 141. A second end of the protective sheath 44, 44', 44" for its part cooperates with each secondary member 42, 42', 42" in a secondary portion 142, 142', 142".

As before, retractable sleeves 46, 47, 48, 49 are also placed on this electrical harness 40 in an unrestricted state. Thus, in a reference portion 141, a reference retractable sleeve 46 is arranged partially overlapping the reference member 41 and the protective sheath 44, 44', 44". Similarly, in the three secondary portions 142 , 142', 142", secondary sleeves 47, 48, 49 are arranged partially overlapping the three secondary members 42, 42', 42" and the three sections of the protective sheath 44, 44', 44".

A reference restriction is then produced by heating the reference retractable sleeve 46 in order to immobilize each section of the protective sheath 44, 44', 44" with respect to the reference member 41. A reference plane P2 is thus defined according to a position of the three branches of the derivation forming the reference member 41.

Each secondary member 42, 42', 42" is then capable of pivoting around a longitudinal direction OX of a relative angular orientation θ1 relative to the associated section of the protective sheath 44, 44', 44" and therefore relative to the reference plane P2 which was previously assigned to it in the reference portion 141.

Once oriented, these secondary members 42, 42', 42" and respectively the sections of the protective sheath 44, 44', 44" are then held in position and secondary constrictions of the secondary shrink sleeves 47, 48, 49 can be made.

Similarly and as shown in picture 3 , a third embodiment of electrical harness 50 may also comprise several reference members 51, 51' formed in this example by two taps with three coplanar formwork sections and five secondary members 52, 52', 52", 53, 53'. Furthermore, the reference member 51' and the secondary member 52' are combined here.The secondary members 52, 52", 53 and 53" are formed by straight or 90° bent connectors for example.

Five sections of the protective sheath 54, 54', 54", 55 and 55' protect the electrical wires of the electrical harness 50. A first reference member 51 is arranged in a first reference portion 151. A second reference member 51 'is arranged in a second reference portion 151'.

As before, the retractable sleeves 56, 57, 58, 59, 60, 61 are placed on this electrical harness 50 in an unrestricted state. Thus, in the reference portion 151, a first reference retractable sleeve 56 is arranged partially overlapping the reference member 51 and the protective sheath 54, 54', 54". Similarly, in the three secondary portions 152, 152', 152", first secondary sleeves 57, 58, 59 are arranged partially overlapping the first three secondary members 52, 52', 52" and the three sections of the protective sheath 54, 54', 54" .

A first reference shrinkage is then produced by heating the first reference retractable sleeve 56 making it possible to immobilize each section of the protective sheath 54, 54', 54" with respect to the first reference member 51 and thus to define a first reference plane P3 as a function of a position of the three branches of the derivation forming the first reference member 51.

Each first secondary member 52, 52', 52" is then capable of pivoting around a longitudinal direction OX of a relative angular orientation θ1 with respect to each section of the protective sheath 54, 54', 54" and therefore relative to the first reference plane P3 which was previously assigned to it in the first reference portion 151.

Once oriented, these first secondary members 52, 52', 52" and respectively the sections of the protective sheath 54, 54', 54" are then held in position and the first secondary constrictions of the first secondary retractable sleeves 57, 58, 59 can be achieved.

The first secondary retractable sleeve 59 then also forms a second reference retractable sleeve 59. A second reference constriction is then produced and makes it possible to immobilize each section of the protective sheath 55, 55' with respect to the second reference member 51' merged with the first secondary member 52'. A second reference plane P4 is thus defined as a function of a position of the three branches of the derivation forming the second reference member 51'.

Each second secondary member 53, 53' is then capable of pivoting around a longitudinal direction OX of a relative angular orientation θ1 with respect to the associated section of the protective sheath 55, 55' and therefore with respect to the second reference plane P4 which was previously assigned to it in the second reference portion 151'.

Once oriented, these secondary members 52, 52', 52" and respectively the sections of the protective sheath 54, 54', 54" are then held in position and second secondary constrictions of the second secondary retractable sleeves 60, 61 can be made.

The various retractable sleeves 56-61 are shown here in their contracted state to ensure the tightness of the electrical harness 50.

As depicted at figure 4 , the relative angular orientation θ1 can for example be noted by convention in the clockwise direction with respect to a transverse direction OY perpendicular to the longitudinal direction OX. The relative angular orientation θ1 is then recorded in a transverse plane YOZ defined by two transverse directions OY and OZ perpendicular to each other and relative to the longitudinal direction OX.

Such a transverse plane YOZ is then also arranged perpendicular to the reference plane P1 defined at the level of the reference member 31.

As represented at figures 5 and 6 , such an electrical harness is manufactured by implementing a particular manufacturing process 1, 10.

According to a first variant of the manufacturing process shown in figure 5 , the method 1 comprises a step 2 of assembling the electric wire(s) 22, 22', the at least one protective sheath 34, 44, 44', 44", 54, 54', 54", 55, 55 ', at least two retractable sleeves 36-37, 46-49, 56-61, at least one reference member 31, 41, 51, 51' and at least one secondary member 32, 42, 42', 42 ", 52, 52', 52", 53, 53'.

During this assembly step 2, the at least two shrink sleeves 36-37, 46-49, 56-61 remain arranged in an unrestricted state.

Then, in a reference portion 131, 141, 151, 151' of the electrical harness 30, 40, 50, a reference step 3 of shrinkage of a reference retractable sleeve 36, 46, 56, 59 is carried out. reference restriction step 3 thus makes it possible to assign at least one reference plane P1, P2, P3, P4 to the electrical harness 30, 40, 50. In addition, the reference portion 151' can be defined in a second step, namely after a first step of reference shrinkage 3. The reference shrink sleeve will therefore be shrunk during a second step of reference shrinkage 3.

Thus, the reference plane P4 can be determined once the reference plane P3 has been assigned.

Therefore, in the secondary portion(s) 132, 142, 142', 142", 152, 152', 152", 153, 153' of the electrical harness 30, 40, 50 relative to the reference portion 131, 141, 151, 151', one or more angular positioning steps 4 of the secondary member(s) 32, 42, 42', 42", 52, 52', 52", 53, 53' are implemented with respect to the at least a protective sheath 34, 44, 44', 44", 54, 54', 54", 55, 55' and therefore with respect to a reference plane P1, P2, P3, P4.

As indicated above, the secondary portion(s) 153, 153' of the electrical harness 50 can only be assigned in a second stage after having determined the reference plane P4 at the level of the reference portion 151'. Thus, the steps of angular positioning 4 of the secondary members 53, 53' with respect to the portions of the protective sheath 55 and 55' will also be carried out once the reference plane P4 has been assigned to the electrical harness 50.

Such angular positioning 4 is carried out according to the relative angular orientation θ1 as described in figure 4 in the transverse plane YOZ perpendicular to a longitudinal direction OX in which the protective sheath 34, 44, 44', 44", 54, 54', 54", 55, 55' extends longitudinally.

For example in this variant, a lug or keying device 38 of the secondary member 32 is initially assembled during assembly step 2 in a vertical position cooperating with the transverse direction OY. The angular positioning step 4 then consists of rotating a secondary member 32, 42, 42', 42", 52, 52', 52", 53, 53' around the longitudinal direction OX to position the polarizer 38, the bend of an angled connector when the secondary member 32, 42, 42', 42", 52, 52', 52", 53, 53' is formed by an angled connector 32, 42, 42", 53' or even the plane defined by the branches of a derivation when the secondary member 32, 42, 42', 42", 52, 52', 52", 53, 53' is formed by a derivation 52'.

Such a bend is therefore formed by a portion of the connector extending radially with respect to the longitudinal direction OX. This bend can for example be oriented at an angle of 90° with respect to the longitudinal direction OX but other values of this angle can also be envisaged. In this case, the relative angular orientation θ1 is then assigned to a projection of the elbow in a plane perpendicular to the longitudinal direction OX.

The manufacturing method 1 then then comprises a step of holding in position 5 the secondary member 32, 42, 42', 42", 52, 52', 52", 53, 53' in the relative angular orientation θ1.

Finally, a secondary shrinking step 6 of the secondary shrink sleeves 32, 42, 42', 42", 52, 52', 52", 53, 53' is carried out.

According to a second variant of the manufacturing process shown in figure 6 and 8 , the method 10 may include a preliminary step 11, 11' of determining the relative angular orientation θ1. This preliminary step 11, 11' is thus implemented prior to the assembly step 12, the reference necking step 13, the angular positioning step 14, the holding step 15 and in the secondary shrinking step 16. The preliminary step 11, 11' therefore consists in manufacturing a model electrical harness 230 on a model aircraft. This Model 230 electrical harness is identical to the 30, 40, 50 electrical harness which must be made using the 1, 10 manufacturing process.

This preliminary step 11, 11' includes a sub-step 110, 110' of locating a reference line on a model protective sheath 234 as shown in figure 7 . This marking step 110, 100' is carried out by means of markers 235 arranged on this protective sheath model 234.

The preliminary step 11, 11' then includes a sub-step of preliminary assembly 111, 111' of a model 222 electrical wire, of the model 234 protective sheath, of two model 236, 237 retractable sleeves, of a model reference 231 and a model secondary member 232. During this preliminary sub-step 111, 111', the two model shrink sleeves 236, 237 are arranged in their unrestricted state. Such a preliminary assembly sub-step 111, 111' is moreover carried out on a work surface.

The preliminary step 11, 11' then comprises a preliminary reference restriction sub-step 112, 112' making it possible to assign a model reference plane P5 to the model electrical harness 230. This preliminary reference restriction sub-step 112, 112' is also carried out on the work surface in a portion of reference model 331 of the model electrical harness 230. In addition, such a reference plane model P5 is defined by means of the marks 235 arranged on the protective sheath model 234.

Thus, only the model 236 shrink sleeve is arranged in its shrunken state while the model 237 shrink sleeve remains arranged in its unshrunk state.

The preliminary step 11, 11' then includes a sub-step of fitting 113, 113' of the model electrical harness 230 on the model aircraft and of connecting the model secondary component 232 formed by a connector with at least one piece of equipment electric model aircraft.

In a model secondary portion 332 of the model electrical harness 230 distinct from the model reference portion 331, a preliminary secondary shrinking sub-step 114, 114' of the model secondary retractable sleeve 237 is then performed, then a measurement sub-step 115, 115' of the relative angular orientation θ1 between the marks 235 and the model secondary member 232.

Such a measurement sub-step 115, 115' can itself be implemented in different ways.

For example, as depicted in figure 6 , this measurement sub-step 115 of the relative angular orientation θ1 can be implemented by leaving the model electrical harness 230 fully mounted on the model aircraft. Optionally, only the model secondary member 232 can be temporarily disconnected from the electrical equipment with which it cooperates.

Alternatively and as shown in figure 8 , the preliminary step 11′ may include a sub-step 116′ of dismantling the model electrical harness 230 outside the model aircraft. The measurement sub-step 115' of the relative angular orientation θ1 is then implemented after the dismantling sub-step 116'.

As depicted at figure 9 , the invention also relates to a tool 70 making it possible at least to position angularly and to maintain in position at least one secondary member 32, 42, 42', 42", 52, 52', 52", 53, 53' by relative to at least one protective sheath 34, 44, 44', 44", 54, 54', 54", 55, 55' in a relative angular orientation θ1. Such a tool 70 then makes it possible to participate in the manufacture of an electrical harness 30, 40, 50 according to the method 1, 10 as previously described.

This tool 70 thus comprises a fixed plate 71 of flat shape and at least one immobilizing device 72 for immobilizing a protective sheath 34, 44, 44', 44", 54, 54', 54", 55, 55' of the electrical harness 30, 40, 50 and make the protective sheath 34, 44, 44', 44", 54, 54', 54", 55, 55' integral with the fixed plate 71.

The tool 70 also includes a moving part 73 capable of pivoting around an axis of AXROT rotation arranged parallel to the fixed plate 71. Such an axis of AXROT rotation is then intended to coincide with a longitudinal direction OX of the sheath protection 34, 44, 44', 44", 54, 54', 54", 55, 55'.

Furthermore, at least one immobilization support 74 is configured to immobilize a secondary member 32, 42, 42', 42", 52, 52', 52", 53, 53' of the electrical harness 30, 40, 50 and render this secondary member 32, 42, 42', 42", 52, 52', 52", 53, 53' integral in rotation with the movable part 73.

The tool 70 also comprises a graduated angular scale 75 to position, according to the relative angular orientation θ1, the protective sheath 34, 44, 44', 44", 54, 54', 54", 55, 55' and the 'secondary body 32, 42, 42', 42", 52, 52', 52", 53, 53'.

In addition, such a tool 70 can advantageously comprise an angular locking means 76 for locking the movable part 73 in position relative to the fixed plate 71. Such an angular locking means 76 can in particular take the form of a finger. indexing cooperating with at least one hole or at least one notch of complementary shape

According to another example, the tool 70 may include at least one guide bearing 77 to guide the movable part 73 in rotation relative to the fixed plate 71.

The tool 70 can also include a fixed disc 78 secured to the fixed plate 71. As shown, such a fixed disc 78 can include the graduated angular scale 75 to indicate the relative angular orientation θ1.

The movable part 73 can then comprise a movable disc 80 comprising, to indicate the relative angular orientation θ1, a radial index 79 intended to be arranged facing the graduated angular scale 75. According to another example not shown, the movable part 73 may include a mobile disc 80 comprising, to indicate the relative angular orientation θ1, the graduated angular scale 75. In this case, the radial index 79 may be arranged on the fixed plate 71 or even on a part secured to the plate fixed 71.

This moving part 73 may comprise a moving plate 81 on which the immobilization support(s) 74 are mounted.

Furthermore, such a tool 70 can also make it possible to measure the relative angular orientation θ1 on a model electrical harness 230. Once the electrical harness 30, 40, 50 has been manufactured, the tool 70 can then make it possible to check one or more relative angular orientations θ1 prior to the mounting of this electrical harness 30, 40, 50 on an aircraft or even during or after mounting if, for example, a problem is identified.

Of course, the present invention is subject to many variations in its implementation. Although several embodiments have been described, it is clearly understood that it is not conceivable to identify exhaustively all the possible modes. It is of course possible to replace a means described by an equivalent means without departing from the scope of the present invention.

Claims (9)

Method of manufacturing (1, 10) an electrical harness (30, 40, 50), said electrical harness (30, 40, 50) comprising at least one reference member (31, 41, 51, 51') and at at least one secondary member (32, 42, 42', 42", 52, 52', 52", 53, 53') as well as at least one electrical wire (22, 22') extending between said at least one reference member (31, 41, 51, 51') and said at least one secondary member (32, 42, 42', 42", 52, 52', 52", 53, 53'), said electrical harness (30 , 40, 50) comprising at least one protective sheath (34, 44, 44', 44", 54, 54', 54", 55, 55') to protect said at least one electric wire (22, 22') and at least two shrink sleeves (36-37, 46-49, 56-61), said at least two shrink sleeves (36-37, 46-49, 56-61) comprising at least one reference shrink sleeve (36, 46, 56, 59) and at least one secondary shrink sleeve (37, 47-49, 57, 58, 60, 61), said at least one reference shrink sleeve (36, 46, 56, 59) being arranged overlapping to at least partially of said at least one reference member (31, 41, 51, 51') and of said at least one protective sheath (34, 44, 44', 44", 54, 54', 54", 55, 55 '), said at least one secondary retractable sleeve (37, 47-49, 57, 58, 60, 61) being arranged overlapping at least partially said at least one secondary member (32, 42, 42', 42", 52 , 52', 52", 53, 53') and said at least one protective sheath (34, 44, 44', 44", 54, 54', 54", 55, 55'),
characterized in that said method (1, 10) comprises at least the following steps: • assembly (2, 12) of said at least one electric wire (22, 22'), of said at least one protective sheath (34, 44, 44', 44", 54, 54', 54", 55, 55 '), said at least two shrink sleeves (36-37, 46-49, 56-61), said at least one member reference (31, 41, 51, 51') and said at least one secondary member (32, 42, 42', 42", 52, 52', 52", 53, 53'), said at least two shrink sleeves (36-37, 46-49, 56-61) being arranged in an unrestricted state, • in a reference portion (131, 141, 151, 151') of said electrical harness (30, 40, 50), reference constriction (3, 13) of said at least one reference retractable sleeve (36, 46, 56, 59), said reference shrinking step (3, 13) making it possible to immobilize said at least one protective sheath relatively with respect to said at least one reference member, said at least one reference member making it possible to assign at least one reference plane (P1, P2, P3, P4) to said electrical harness (30, 40, 50), • in a secondary portion (132, 142, 142', 142", 152, 152'152", 153, 153') of said electrical harness (30, 40, 50) separate from said reference portion (131, 141, 151 , 151'), angular positioning (4, 14) of said at least one secondary member (32, 42, 42', 42", 52, 52', 52", 53, 53') with respect to said reference plane (P1 , P2, P3, P4) in a relative angular orientation (θ1), said relative angular orientation (θ1) being defined in a plane perpendicular to a longitudinal direction OX in which said at least one protective sheath (34, 44, 44', 44", 54, 54', 54", 55, 55') facing said at least one secondary member (32, 42, 42', 42", 52, 52', 52", 53, 53'), • maintaining in position (5, 15) said at least one secondary member (32, 42, 42', 42", 52, 52', 52", 53, 53') in said relative angular orientation (θ1), and • secondary shrinkage (6, 16) of said at least one secondary shrink sleeve (32, 42, 42', 42", 52, 52', 52", 53, 53'). Method according to claim 1,
characterized in that said method (10) includes a preliminary step (11, 11') of determining said relative angular orientation (θ1). Method according to claim 2,
characterized in that said preliminary step (11, 11') is carried out by manufacturing directly on a model aircraft a model electrical harness (230), said model electrical harness (230) being distinct from said electrical harness (30, 40, 50) and comprising at least one model reference member (231), at least one model secondary member (232), at least one model electrical wire (222) extending between said at least one model reference member (231) and said at least a model secondary member (232), at least one model protective sheath (234) for protecting said at least one model electrical wire (232) and at least two model shrink sleeves (236, 237), said at least two model shrink sleeves (236, 237) comprising at least one model reference shrink sleeve (236) and at least one model secondary shrink sleeve (237), said at least one model reference shrink sleeve (236) being arranged at least partially overlapping said at least one minus one model reference member (231) and said at least one model protective sheath (234), said at least one model secondary retractable sleeve (237) being arranged overlapping at least partially said at least one model secondary member (232) and of said at least one model protective sheath (234). Method according to claim 3,
characterized in that said preliminary step (11, 11') comprises the following sub-steps: • marking (110, 110') of a reference line on said at least one model protective sheath (234) by means of markers (235) arranged on said at least one model protective sheath (234), • preliminary assembly (111, 111') of said at least one model electrical wire (222), of said at least one model protective sheath (234), of said at least two model shrink sleeves (236, 237), of said at least one model reference member (231) and said at least one model secondary member (232), said at least two model shrink sleeves (236, 237) being arranged in an unrestricted state, said preliminary assembly sub-step (111, 111 ') being carried out on a work surface, • in a model reference portion (331) of said model electrical harness (230), preliminary reference constriction (112, 112') making it possible to assign a model reference plane (P5) to said model electrical harness (230), said plane model reference (P5) being defined by means of said markers (235) arranged on said at least one model protective sheath (234), • installation (113, 113') of said model electrical harness (230) on said model aircraft and connection of at least one model secondary component (232) with at least one piece of electrical equipment of said model aircraft, • in a model secondary portion (332) of said model electrical harness (230) distinct from said model reference portion (331), preliminary secondary constriction (114, 114') of said at least one model secondary shrink sleeve (237), and • measurement (115, 115') of said relative angular orientation (θ1) between said markers (235) arranged on said at least a model protective sheath (234) and said at least one model secondary member (232). Method according to claim 4,
characterized in that said sub-step of measuring (115) said relative angular orientation (θ1) is implemented by leaving said model electrical harness (230) fully mounted on said model aircraft. Method according to claim 4,
characterized in that said preliminary step (11') includes a sub-step of dismantling (116') said model electrical harness (230) outside of said model aircraft, said sub-step of measuring (115') said relative angular orientation (θ1 ) being implemented after said dismantling sub-step (116'). Process according to any one of Claims 1 to 6,
characterized in that said at least one reference member (31) includes a reference connector, said at least one reference plane (P1) corresponding to a plane defined as a function of a position of said reference connector. Process according to any one of Claims 1 to 6,
characterized in that said at least one reference member (41, 51, 51') comprises at least one branch with three branches, said at least one reference plane (P2, P3, P4) corresponding to a plane containing said three branches of said at least one branch with three branches. Method according to claim 8,
characterized in that said at least one reference member (51, 51') comprises two derivations with three branches comprising a first derivation (51) and a second derivation (51'), said at least one reference plane (P3, P4 ) comprising a first reference plane (P3) and a second reference plane (P4), said at least one reference shrink sleeve (56, 59) comprising a first reference shrink sleeve (56) and a second reference shrink sleeve (59), said first reference retractable sleeve (56) being arranged overlapping at least partially one at least of said three branches of said first branch (51) and said at least one protective sheath (54, 54', 54"), said second reference retractable sleeve (59) being arranged overlapping at least partially one at least of said three branches of said second branch (51') and said at least one protective sheath (54', 55 , 55').

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