Assembly comprising at least one composite component and connecting device

Abstract

The invention relates to an assembly (1) comprising at least a first composite component (2) made of a ply (4) of unidirectional fibre layers (41, 42, 43, 44, 45) in a thermoplastic or thermosetting matrix, the component (2) being intended to be connected to a second component (3) by means of a connection region (21), the support edge (22) of the component (2) being in contact with the support edge (32) of the second component (3), the assembly (1) comprises means (5) for connecting the first part with the second part. In the vicinity of the connecting area, the first part is composed of a laying layer (4), the laying layer is formed by stacking one-way layers (41, 42, 43, 44 and 45), and the fiber orientation angles of every two adjacent one-way layers are different. At least one cavity (6) is arranged in the first part in the vicinity of the connecting region, is parallel to the contact surface and is arranged in a direction perpendicular to the direction of the unidirectional layer (41, 42, 43, 44, 45); according to the invention, at least one hole (7) perpendicular to the contact surface is provided, starting from its supporting edge (22) and opening into the cavity (6) for receiving a threaded element (51), while the cavity and the second part (3) serve as a support for fastening elements (52, 53). The hole (7) can also be drilled along an axis inclined relative to the contact surface.

Description

TECHNICAL FIELD

[0001] The present invention relates to the field of composite materials, and more particularly to a composite material part manufactured by a specific lay-up process, which is suitable for the coupling of said composite material part with a second part of any type, by means of a connecting device. BACKGROUND

[0002] The coupling of a composite material part to another part, whether this part is composite or not, is an important parameter in the design and manufacture of said composite material part.

[0003] Indeed, the use of mechanical coupling means such as clips or screws between a composite material part and a second part, in particular, generates excessive local stresses, which make these coupling points weak points in the composite material structure and can lead to cracking and premature damage of the composite material.

[0004] In particular, in the case of traditional coupling, the eccentricity of the coupling point with respect to the neutral fiber of the part generates a bending. However, this stress is a particular problem in the field of composite materials, as it creates a fragile zone in the area of change of direction, in particular in T or L fittings, which is difficult to achieve and costly, which further aggravates the problem.

[0005] In particular, in the prior art, French patent application FR 2 388 670 is known, which describes a connecting piece for reinforcing a structural joint, comprising a reinforcing part provided with a number of holes for connecting this part with other elements.

[0006] Thus, a first hole is drilled in the reinforcing part, the axis of which is parallel to the upper edge of the part. A number of transverse holes communicate with a single longitudinal hole and open on the outer edge of the base of the part. The latter can be secured to two elements of the structure by means of a cylindrical pin driven into the single longitudinal hole and a screw passing through a hole drilled opposite the transverse hole communicating with the single longitudinal hole. These screws and pins are connected so as to secure the two elements to each other.

[0007] Thus, in this composite material part, the drilling direction of the main hole is parallel to the direction of the composite material layers.

[0008] As a result of the parallelism of the hole with the direction of the composite material layers, the forces generated by the connecting element tend to separate the composite material layers, which are connected only by the resin, under the effect of traction.

[0009] Thus, the connection proposed in this document is of low strength and does not propose any solution to increase the strength of the fibers in the area of the longitudinal hole.

[0010] Moreover, considering the structures described in the above-mentioned documents, it is not possible to drill longitudinal holes along large-size walls or non-straight walls. SUMMARY

[0011] The object of the present application is to at least partially solve the drawbacks of the existing mechanical connection means in the field of composite parts, proposing a connection means that is able to transmit significant mechanical action in the main direction of the composite wall, while also improving the resistance to separation of the fibers in the vicinity of the hole.

[0012] To this end, the present application relates to a connection piece comprising at least a first composite part made of unidirectional fiber plies laid in a thermoplastic or thermoset matrix, said first composite part being intended to be fixed to a second part, whether composite or not, in the vicinity of a connection zone comprised in said first composite part, the support edge of said first composite part being in contact with the support edge of said second part, and further comprising connection means connecting said first composite part to said second part.

[0013] The particularity of said connection piece is that, at least in the vicinity of said connection zone, said first composite part is made of plies superimposed with two adjacent unidirectional plies having different fiber orientation angles; and in a first embodiment, in the vicinity of said connection zone, said first composite part comprises at least one cavity parallel to said contact surface and arranged along a direction perpendicular to the direction of the unidirectional plies, and at least one hole having an axis perpendicular to said contact surface, said hole starting from the support edge of said first composite part and leading to said cavity, said hole being intended to receive a threaded element, while said cavity and the second part are intended to serve as support for the fastening element.

[0014] Thus, by virtue of the present application, the application of stress along the fiber axis direction of the composite part makes it possible to solve the problems of the connection pieces of the prior art.

[0015] In a second embodiment of the connection piece of the present application, said first composite part comprises at least one cavity parallel to the contact surface formed between said first composite part and said second composite part and arranged along a direction perpendicular to the direction of the unidirectional plies, while said hole is drilled along an axis inclined with respect to this contact surface.

[0016] According to a particular embodiment of the connection piece of the present application, whether it is the first embodiment or the second embodiment described above:

[0017] - said cavity of said first composite part is a long hole;

[0018] - said first composite part comprises at least in the connection zone an additional thickness of unidirectional fiber plies;

[0019] - the cavity provided in the first composite part is cylindrical and the fastening element introduced into the cavity is a threaded cylinder whose dimensions are adapted to those of the cavity;

[0020] - the unidirectional fibre layer plies of the first composite part are made up of a stack structure repeated n times,

[0021] the stack structure comprising a first layer whose fibres are oriented at 90° to the main axis of the first part, the first layer being covered with an interlayer structure comprising a central layer whose fibres are oriented at 0° to the main axis of the first part and two intermediate layers whose fibres are oriented at +45° or -45° to the fibres of the central layer and to the fibres of the first layer.

[0022] The application also relates to a method for manufacturing a first composite part made up of unidirectional fibre layer plies laid up in a thermoplastic or thermosetting matrix, and to a method for fixing a first composite part to a second part, whether composite or not, the fastening process being carried out by means of the connecting piece described in the application, at the connecting zone comprised in the first composite part, the support edge of the first composite part being in contact with the support edge of the second part, thereby forming a contact surface.

[0023] More particularly, the method is characterised in that it comprises at least the following steps, in order:

[0024] - the first part is made up of n layers of unidirectional fibre plies, the angle of orientation of the fibres of two adjacent plies being different, then the matrix is polymerised;

[0025] - at least one cavity is provided at the connecting zone comprised in the first composite part, the cavity being parallel to the contact surface and being provided in a direction perpendicular to the direction of the unidirectional plies;

[0026] - at least one hole is drilled along an axis perpendicular to the contact surface, the hole starting from the support edge of the first composite part and leading to the cavity;

[0027] - the support edge of the first composite part is brought into contact with the support edge of the second part, a threaded element is introduced into the hole and a fastening element is introduced into the cavity and in the vicinity of the second part, thereby fixing the two parts.

[0028] When the method aims at manufacturing a connection as described above according to the second embodiment of the application, the steps are substantially the same, except that the hole is drilled along an axis inclined with respect to the contact surface between the first composite part and the second part, whether the second part is a composite material or not. BRIEF DESCRIPTION OF DRAWINGS

[0029] Other objects and advantages of the application will appear from the following description of embodiments, given by way of indication and non-limiting example.

[0030] The understanding of the present description will be facilitated by making reference to the appended drawings, in which:

[0031] Figure 1 schematics and perspective views of a particular embodiment of a connection according to the application are shown, comprising a first composite part on the left side of the figure, intended to be fixed to a second part, whether the second part is a composite material or not, shown on the right side of the figure, by means of a connection zone and connection means;

[0032] Figure 2 perspective cross-sectional views of the first composite part are shown, showing the arrangement of the unidirectional fiber layers forming the plies, and the hole provided;

[0033] Figure 3 perspective views of three non-limiting embodiments of a composite part, which can be fixed to another part, whether the other part is a composite material or not, by means of a connection according to the application, are shown, in particular, from left to right, a fitting, a pipe or a turbine blade;

[0034] Figure 4 perspective exploded view of one embodiment of a connection according to the application is shown, in which the first composite part is made of a fitting of the first type;

[0035] Figure 5 perspective view of another embodiment of a part of a connection according to the application is shown, made of a fitting of the second type;

[0036] Figure 6 perspective views of another embodiment of a part of a connection according to the application are shown, in two different views, in particular of a first composite part, in which the latter is made of a fitting of the third type, called a multi-point fitting.

[0037] Figure 7 two similar perspective views of another embodiment of a part of a connection according to the application are shown, one of the views being a magnified view of a partial area of the other view, in particular of a first composite part, made of an I-beam;

[0038] Figure 8 Two schematic views, one in cross-section perspective and the other in full cross-section, of another embodiment of a portion of a connection according to the application, in particular of a first composite material part, composed of a tube of the first type, of constant diameter throughout its length;

[0039] Figure 9 Two schematic views, one in cross-section perspective and the other in full cross-section, of another embodiment of a portion of a connection according to the application, in particular of a first composite material part, composed of a tube of the second type, of greater diameter at the connection zone of said first composite material part with a second part, whether composite or not, the second part not being shown in the figure;

[0040] Figure 10 A partial schematic view of another embodiment of a portion of a connection according to the application, in particular of a first composite material part, having a plane perpendicular to the hole;

[0041] Figure 11 A partial schematic view of another embodiment of a portion of a connection according to the application, in particular of a first composite material part, in which the cavity is disposed parallel to the contact surface between said first part and a second part (not shown), while the hole is drilled along an axis inclined with respect to this contact surface. DETAILED DESCRIPTION

[0042] With reference to the appended drawings, the application relates more particularly to a connection 1 comprising, on the one hand, a first composite material part 2 intended to be fixed, in the vicinity of a connection zone 21 comprised by it, to a second part 3.

[0043] This second part 3 can also be a composite material part. However, it can also be a non-composite material part.

[0044] Said second part 3, whether composite material or not, can be considered as forming part of the connection 1 according to the application, or as not belonging to said connection 1.

[0045] Said first composite material part 2 is generally composed of a series of unidirectional fibre layers 41, 42, 43, 44, 45 in a thermoplastic or thermosetting resin.

[0046] Said fibre layers 41, 42, 43, 44, 45 are superimposed on one another, forming a layup 4, which is shown in a particularly schematic manner in the figures. Figure 2

[0047] ​According to one feature of the application, at least in the vicinity of the connection zone 21 of the first composite part 2, the plies 4 are stacked from unidirectional fibre layers 41, 42, 43, 44, 45, the angle of orientation of the fibres of two adjacent fibre layers being different.

[0048] Thus, for example, at least in the vicinity of the connection zone 21 of the first composite part 2, and preferably over the entire part 2, the angle of orientation of the unidirectional fibres of two adjacent fibre layers can advantageously differ by +45° or -45°.

[0049] Obviously, when the second part 3 to be fastened to the first composite part 2 is also a composite part, it can be manufactured in the same way as the first composite part 2, or by any other method known to those skilled in the art for manufacturing composite parts.

[0050] Returning to the problem of fastening the first composite part 2 to the second part 3, whether the second part 3 is a composite or a non-composite part, the fastening process first consists in bringing the support edge 22 included in the first composite part 2 into contact with the support edge 32 included in the second composite part 3 in the vicinity of the connection zone 21, thereby forming a contact surface between the two parts 2, 3; the fastening is then achieved by means of the connecting device 5.

[0051] The contact surface between the two parts can be planar or curved (for example, as shown in the figures, where the blade is shown fixed to the tube). Figure 3

[0052] According to another feature of the connecting piece 1 according to the application, in the vicinity of the connection zone 21 of the first composite part 2, at least one cavity 6 is provided in the first composite part 2, in a direction parallel to the contact surface between the first part 2 and the second part 3. The cavity 6 is thus perpendicular to the main axis of the part 2. In other words, this means that the cavity 6 is provided in a direction perpendicular to the main direction of the plies 4 of unidirectional fibre layers 41, 42, 43, 44, 45.

[0053] The direction of the axis of the bore of the cavity 6 is perpendicular to the plane of the plies 4 of fibre layers 41, 42, 43, 44, 45, in combination with the arrangement of the unidirectional fibre layers 41, 42, 43, 44, 45, which contributes to improving the mechanical strength of the bore under stress of the connecting device which will be described later.

[0054] Thus, in the vicinity of the bore of the cavity 6, the fibres retain their optimum resistance to separation.

[0055] ​In addition to the cavity 6, at least one hole 7 is provided, the axis of which is perpendicular to the contact surface between the two parts 2, 3, said hole 7 in particular starting from the support edge 22 of the connection zone 21 of the part 2 and leading to the cavity 6.

[0056] Thus, unlike the cavity 6, the drilling direction of the hole 7 is parallel to the direction of the composite layers 41, 42, 43, 44, 45. Nevertheless, since the hole 7 is smaller in size than the cavity 6 and is not a through hole, it does not have a negative effect on the resistance to separation of the fibre layers in the vicinity of the connection zone.

[0057] The hole 7 is intended to accommodate the threaded element 51 included in the connection device 5, while the cavity 6 and the second part 3 serve as support for the fastening elements 52, 53 also constituting the connection device 5.

[0058] According to the embodiment shown in the figures, the cavity 6 is preferably open and can thus consist of a slot.

[0059] It should be noted that, preferably, as shown in particular in Figure 1 and Figures 3 to 9 , the connection 1 according to the application more preferably comprises a plurality of cavities 6 and a corresponding number of holes 7, the number and position of which can be adapted according to the shape and size of the first composite part 2 that must be fixed to the second part 3.

[0060] More preferably, as shown in the figures, the cavity 6 or cavities provided in the first composite part 2 are cylindrical.

[0061] Thus, the fastening element 52 intended to be placed in the cavity 6 can be a threaded cylinder 52, the dimensions of which are adapted to the dimensions of the cavity 6, while the connection device 5 can also be supplemented with screws 51, 53. This particularly preferred embodiment is shown in Figure 1 of the figures.

[0062] Of course, it is also possible to envisage that the cavity 6 takes other shapes and dimensions, as does the fastening element 52 intended to be embedded in the cavity 6.

[0063] With reference to Figure 10 of the figures, it is possible to envisage that one edge of the cavity 6 has at least partially, or even completely, a plane perpendicular to the hole 7. This design facilitates the use of a conventional screw and washer as fastening element.

[0064] This design of the connection 1 according to the application makes it possible to withstand a high tensile force, the strength limit of which depends on the mechanical strength of the screw.

[0065] Of course, the shape can be advantageously adjusted so that it can be connected from the side of the first composite component 2 (not shown) or from the side of the second component 3, whether it is composite or non-composite, as shown, by tightening the threaded element.

[0066] In addition, Figure 4 , Figure 5 , Figure 6 The crescent-shaped washer-type intermediate support element 54 visible in the middle can be added to the connecting device 5, especially when the cavity 6 is concave, the intermediate support element 54 allows for planar fastening.

[0067] It should be noted that the layup 4 of fiber layers 41, 42, 43, 44, and 45 in the first composite material component 2 can be optimized. Specifically, Figure 2 The stacking arrangement of the fiber layers 41, 42, 43, and 44 shown is particularly effective in terms of strength.

[0068] More specifically, the layup 4 of the unidirectional fiber layers 41, 42, 43, 44, and 45 of the first composite material component 3 is composed of a stacked structure of composite material layers 41, 42, 43, 44, and 45, as detailed below:

[0069] - A first layer 41 is provided, the fibers of which are oriented at 90° to the main axis of the first component 2;

[0070] - A sandwich structure is covered on the first layer 41. This sandwich structure consists of a central layer 43 and two intermediate layers 42 and 44. The fibers of the central layer 43 are oriented at 0° to the main axis of the first composite material component 2. The central layer 43 is located between the two intermediate layers 42 and 44. The fibers between the two intermediate layers 42 and 44 are oriented at 0° to the fibers of the first central layer 43 and the fibers of the first layer 41.

[0071] +45° or -45° orientation;

[0072] - Repeat this stacking structure n times, again with the fibers at a 90° angle to the main axis of the first component 2.

[0073] Starting with the oriented fiber layer 45, and so on.

[0074] It is particularly advantageous that the first composite material component 2 includes an additional thickness E of unidirectional fiber layers 41, 42, 43, 44, 45 at least in the connection area 21 between the first composite material component 2 and the second component 3, regardless of whether the second component 3 is a composite material or a non-composite material.

[0075] Refer to the attached diagram. Figure 11, the figure shows a part of a connection according to the application, in particular the case of a first composite part 2 in a second embodiment of the application, which is similar to the first embodiment, the cavity 6 being again arranged parallel to the contact surface between the two parts 2, 3 to be connected and in a direction perpendicular to the plane of the layup 4 of the unidirectional fibre layers 41, 42, 43, 44, 45; but, unlike the first embodiment described previously, the hole 7 is arranged along an axis inclined with respect to the contact surface formed between the two parts 2, 3 to be connected.

[0076] Thus, in Figure 11 In the schematic view on the left, the hole 7 for the passage of the fastening element can be inclined in the average plane of the surface of the composite part 2, for example, to improve the shear transmission capacity of the connection or the torque transmission capacity of the shaft.

[0077] As for Figure 11 In the schematic view on the right, the hole 7 can also be inclined in a plane perpendicular to the average plane of the surface of the composite part 2, to facilitate the installation of the fastening element.

[0078] All the features described above in relation to the first embodiment, in which the first composite part 2 comprises a hole 7 arranged along an axis perpendicular to the contact surface between said first composite part 2 and a second part 3, are also applicable to this second embodiment, in which the hole 7 is inclined with respect to this contact surface.

[0079] The application also relates to a manufacturing method, on the one hand for manufacturing a first composite part 2 made of unidirectional fibre layers 41, 42, 43, 44, 45 laid in a thermoplastic or thermosetting matrix, and on the other hand for connecting said first composite part 2 with a second part 3, whether composite or not, by means of the connection 1 described above.

[0080] As mentioned previously, the connection of the two parts 2, 3 is carried out at a connection zone 21 comprised by said first composite part 2, the support edge 22 of said first composite part 2 being in contact with the support edge 32 of said second part 3, thereby forming a contact surface between said first composite part 2 and second part 3, whether composite or not.

[0081] The manufacturing and connection method according to the application comprises at least the following steps, carried out in order:

[0082] - forming the layup 4 of said first part 2 by superimposing n layers of unidirectional fibres 41, 42, 43, 44, 45, the angle of orientation of the fibres of two adjacent layers being different, then polymerizing the thermoplastic or thermosetting matrix;

[0083] - it is noted that, when forming the layup 4, it is preferable, but not essential, to provide an additional thickness E of the unidirectional fibre layer at the connection zone 21 of the first composite part 2, which will play a role in the subsequent joining step with the second part 3;

[0084] - providing at least one cavity 6 at the connection zone 21 comprised by the first composite part 2, which part preferably has an additional thickness of fibre layers here, said cavity 6 being formed along an axis parallel to the contact surface between the first composite part 2 and the second part 3, whether composite or not, and said cavity 6 being provided along a direction perpendicular to the main direction of the layup 4 of the unidirectional fibre layers 41, 42, 43, 44, 45;

[0085] - drilling at least one hole 7 along an axis perpendicular to the contact surface, or, as the case can be, along an axis inclined with respect to this contact surface, which hole starts from the support edge 22 of the first composite part 2 and opens into the cavity 6 drilled at the connection zone 21 in the previous step;

[0086] - bringing the support edge 22 of the first composite part 2 into contact with the support edge 32 of the second part 3, inserting a threaded element 51 into the hole 7, and inserting a fastening element 52,

[0087] 53 into the cavity 6 and in the vicinity of the second part 3, thereby fixing the first composite part 2 to the second part 3.

[0088] The above-mentioned preferred elements and features associated with the joint 1 of the application are obviously also applicable to the method of the application, in particular in terms of the order in which the fibre layers are arranged to form the layup 4, and in terms of the possibility of providing a plurality of cavities 6 and holes 7 at the connection zone 21 of the first composite part 2.

[0089] Reference is now made to the Figure 3 , it is noted that the joint system according to the application can be adapted to the geometry of the wall of the composite part 2 to be joined, thereby optimising the cohesion of the joint between the composite part 2 and the second part 3, especially in the case of complex stresses or in the case of complex geometries, such as a joint 2a, a tube 2b or a turbine blade 2c.

[0090] Figure 4 The subsequent figures illustrate various applications of the application in terms of joining a first composite part 2 to a second part 3, whether composite or not.

[0091] Thus, in Figure 4 , Figure 5 , Figure 6 , the first composite part 2 consists of a fitting, in particularFigure 6 multi-point connection.

[0092] In Figure 7 the first composite part 2 is a beam.

[0093] In Figure 8 and Figure 9 the first composite part 2 is a tube.

[0094] Figure 8 In the case of a tube, the diameter is constant throughout the length of the tube, at the connection zone 21, the thickness is increased to compensate for the reduction in material and to ensure the thickness required for the connection means.

[0095] Figure 9 A tube is shown, the diameter of which is greater at the connection zone 21 of the first composite part 2 and of the second composite part 3 (not shown) in order to leave a gap to facilitate the installation of the connection means (not shown) and to be able to contact these connection means from the axial direction.

[0096] In Figure 9 In this particular application shown, it is noted that the connection axis is offset with respect to the main axis of the composite part 2, which makes it possible to adapt the shape of the composite part to the connection mode, thus reinforcing the strength of the connection zone.

[0097] More generally, the application can be applied to the manufacture of aeronautical connections, drive shafts, masts, beams, etc.

Claims

1. A connector (1) comprising at least a first composite material component (2), the first composite material component being made of unidirectional fiber layers (41, 42, 43, 44, 45) laid in a thermoplastic or thermosetting matrix (4), wherein, The first composite component (2) is intended to be fixed to the second component (3) near its included connection area (21), regardless of whether the second component (3) is a composite material or a non-composite material, wherein the support edge (22) of the first composite component (2) contacts the support edge (32) of the second component (3), wherein the connector (1) further includes a connecting device (5) for connecting the first composite component (2) and the second component (2), characterized in that, at least near the connection area (21), the first composite component (2) is composed of plies (4) formed by stacking unidirectional layers (41, 42, 43, 44, 45) adjacent to each other. The two unidirectional layers have different fiber orientation angles; and near the connection area (21), the first composite material component (2) is provided with at least one cavity (6), which is parallel to the contact surface and is arranged in a direction perpendicular to the direction of the unidirectional layers (41, 42, 43, 44, 45); at the same time, at least one hole (7) is provided, which is along an axis perpendicular to the contact surface, wherein the hole (7) starts from the support edge (22) of the first composite material component (2) and leads to the cavity (6), the hole (7) is used to accommodate the threaded element (51), and the cavity (6) and the second component (3) are used as supports for fastening elements (52, 53).

2. The connector (1) according to claim 1, characterized in that: The cavity (6) of the first composite material component (2) is an elongated hole.

3. The connector (1) according to claim 1 or 2, characterized in that: The first composite component (2) includes an additional thickness (E) of unidirectional fiber layers (41, 42, 43, 44, 45) at least in the connection region (21).

4. The connector (1) according to any of the preceding claims, characterized in that: The cavity (6) in the first composite material component (2) is cylindrical, and the fastening element (52) entering the cavity (6) is composed of a threaded cylinder (52) whose size is adapted to the size of the cavity (6).

5. The connector (1) according to any of the preceding claims, characterized in that: The unidirectional fiber layer layup (4) of the first composite material component (2) is composed of a stacked structure repeated n times. The stacked structure includes a first layer (41) whose fibers are oriented at 90° to the main axis of the first component (2). A sandwich structure is covered above the first layer (41). The sandwich structure consists of a central layer (43) and two intermediate layers (42, 44). The fibers of the central layer (43) are oriented at 0° to the main axis of the first component. The fibers of the two intermediate layers (42, 44) are oriented at +45° or -45° to the fibers of the central layer (43) and the fibers of the first layer (41).

6. A method for manufacturing a first composite material component (2) and attaching it to a second component (3), regardless of whether the second component (3) is a composite material or a non-composite material, wherein the attachment is performed at a connection region (21) included in the first composite material component (2), the first composite material component (2) being made of unidirectional fiber layers (41, 42, 43, 44, 45) laid in a thermoplastic or thermosetting matrix (4), the attachment process being carried out by means of a connector (1) according to any of the preceding claims, wherein, The supporting edge (22) of the first composite material component (2) contacts the supporting edge (32) of the second component (3) and forms a contact surface, characterized in that the method includes at least the following steps performed in sequence: - The first component (2) is formed by stacking n layers of unidirectional fibers (41, 42, 43, 44, 45), wherein the orientation angles of adjacent fiber layers are different, and then the matrix is ​​polymerized; - At least one cavity (6) is provided near the connection area (21) included in the first composite material component (2), the cavity being parallel to the contact surface and arranged in a direction perpendicular to the direction of the unidirectional layer (41, 42, 43, 44, 45); - Drill at least one hole (7) along an axis perpendicular to the contact surface, the hole starting from the support edge (22) of the first composite material component and leading to the cavity (6); - The support edge (22) of the first composite material component (2) is brought into contact with the support edge (32) of the second component (3), the threaded element (51) is inserted into the hole (7), and the fastening elements (52, 53) are inserted into the cavity (6) and near the second component (3) to fix the two components (2, 3).

7. A connector (1) comprising at least a first composite material component (2), the first composite material component (2) being made of unidirectional fiber layers (41, 42, 43, 44, 45) laid in a thermoplastic or thermosetting matrix (4), wherein, The first composite component (2) is intended to be fixed to the second component (3) by means of its included connection area (21), regardless of whether the second component (3) is a composite material or a non-composite material, wherein the support edge (22) of the first composite component (2) contacts the support edge (32) of the second component (3), wherein the connector (1) further includes a connection device (5) for connecting the first composite component (2) and the second component (3), characterized in that, at least near the connection area (21), the first composite component (2) is composed of a layup (4) which is composed of unidirectional layers (41, 42, 43, 44, 45) stacked together, with adjacent unidirectional layers having different fiber orientation angles; Furthermore, near the connection area (21), the first composite material component (3) is provided with at least one cavity (6), which is parallel to the contact surface and arranged in a direction perpendicular to the direction of the unidirectional layers (41, 42, 43, 44, 45); at the same time, at least one hole (7) is provided, which is along an axis inclined relative to the contact surface, wherein the hole (7) starts from the support edge (22) of the first composite material component (2) and leads to the cavity (6), wherein the hole (7) is used to accommodate the threaded element (51), and the cavity (6) and the second component (3) are used as supports for fastening elements (52, 53).

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