Method for manufacturing a mounting assembly comprising a connecting rod and a pin

Abstract

A pivot assembly having a clevis shaft 16, a clevis 12 with two prongs 14, 15, and a tang 13. Disposed radially between the bore 14a of the first prong 14 and the clevis pin 16 is a sleeving ring 17 having a first inner flange 23 bearing a first lateral face 13a of the tang forming axial gap 21; and a sleeving ring 18 between the bore 15a of the second prong and the clevis pin 16, having a second inner flange 24 forming axial gap 22. After being inserted into the corresponding bores, external flanges 25, 26 are formed on the inserts 17, 18 by deformation (e.g. riveting) axially opposite the inner flanges 23, 24. Inner flanges may include bevel chamfer 27, 28. The external flanges 25, 26 may be radially discontinuous having multiple radial teeth 29 (figure 4). Clevis may be carbon fibre reinforced thermoplastic thermosetting matrix. Tang may be metal.

Description

Title: Method for manufacturing a mounting assembly comprising a connecting rod and a pin Technical field of the invention The present invention relates, generally, to connecting rods and the mounting of a connecting rod clevis and a pin for mounting a connecting rod and a pin on a mounting shaft. More specifically, the invention relates to a mounting assembly comprising a mounting shaft, a connecting rod provided with two connecting portions, and a pin, and to a method for manufacturing a mounting assembly comprising a mounting shaft, a connecting rod provided with two connecting portions, and a pin. Prior art An existing mounting assembly 1, as shown in Figure 1, comprises a connecting rod clevis 2 provided with two connecting portions 3 and 4, and a pin 5, these being mounted on a mounting shaft 6 in order to fix the connecting rod 2 and the pin 5 around the mounting axis X. The two connecting portions 3 and 4 are generally made of a carbonfibre-reinforced plastics material, and the pin is made of metal, such as aluminium. Conventionally, two contact rings 7 and 8 are also interposed radially between the mounting shaft 6 and the connecting portions 3 and 4. The proximity and contacts that result from the mounting of the connecting rod 2 and of the pin 5 lead to the occurrence of galvanic corrosion at the interface between the connecting portions 3 and 4 and the pin 5. However, this phenomenon brings about premature wear of the mounting assembly 1. In order to rule out this risk of galvanic corrosion, it is known to provide a layer 9, 10 of glass-fibre-reinforced plastics material, generally in the form of a ply, on the surface of the connecting portions 3 and 4 that comes into contact with the pin 5. However, the addition of such a layer 9, 10 to the connecting portions of the connecting rod increases the weight of the mounting assembly 1. Given its nature and the steps for manufacturing it, the layer 9, 10 also makes it particularly expensive to obtain the mounting assembly 1. Moreover, the presence of glass fibres in the layer 9, 10 does not make it possible to recycle the carbon fibres of the carbon-fibre-reinforced plastics material of the connecting portions 3 and 4 of the connecting rod 2 after the mounting assembly 1 has been scrapped. Summary of the invention The aim of the invention is therefore to overcome these drawbacks and to provide a configuration of a mounting assembly comprising a mounting shaft, a connecting rod, and a pin that makes it possible to eliminate the occurrence of galvanic corrosion at the interface between the connecting rod and the pin. Therefore, the invention provides a method for manufacturing a mounting assembly comprising first and second connecting portions of a connecting rod and a pin that are assembled around a mounting shaft, the method comprising the following steps: - fitting a first contact ring in the bore in the first connecting portion of the connecting rod, the first contact ring comprising an axial portion and a first radial flange that extends the axial portion towards the outside, the first radial flange of the first contact ring being provided with a bearing surface that comes to bear axially against a first face of the first connecting portion of the connecting rod, and fitting a second contact ring in the bore in the second connecting portion of the connecting rod, the second contact ring comprising an axial portion and a first radial flange that extends the axial portion towards the outside, the first radial flange of the second contact ring being provided with a bearing surface that comes to bear axially against a first face of the second connecting portion of the connecting rod; - forming a second radial flange that extends the axial portion of the first contact ring towards the outside by deformation of the axial portion, the second radial flange of the first contact ring being provided with a bearing surface that comes to bear axially against a second face of the first connecting portion of the connecting rod, and forming a second radial flange that extends the axial portion of the second contact ring towards the outside by deformation of the axial portion, the second radial flange of the second contact ring being provided with a bearing surface that comes to bear axially against a second face of the second connecting portion of the connecting rod; - positioning the pin axially between the first and second connecting portions of the connecting rod, and - fitting the pin and the first and second connecting portions of the connecting rod around the mounting shaft, the pin being positioned axially between the first and second connecting portions of the connecting rod, one of the first and second radial flanges of the first contact ring being provided with a contact surface that comes into axial contact with a first lateral face of the pin or is located next to said first lateral face, and forming a first axial space between the first connecting portion of the connecting rod and the first face of the pin, and one of the first and second radial flanges of the second contact ring being provided with a contact surface that comes into axial contact with a second lateral face of the pin or is located next to said second lateral face, and forming a second axial space between the second connecting portion of the connecting rod and the second lateral face of the pin. In one embodiment, the outer surface of the axial portion of the first contact ring may be positioned in contact with the bore in the first connecting portion, and the outer surface of the axial portion of the second contact ring may be positioned in contact with the bore in the second connecting portion. Advantageously, the axial portion of the first contact ring may comprise first and second axially opposite ends, the first radial flange of the first contact ring extending the first end of the axial portion towards the outside, and the axial portion of the second contact ring may comprise first and second axially opposite ends, the first radial flange of the second contact ring extending the first end of the axial portion towards the outside. Advantageously, the axial portion of the first contact ring may comprise first and second axially opposite ends, the second radial flange extending the second end of the axial portion, and the axial portion of the second contact ring may comprise first and second axially opposite ends, the second radial flange of the second contact ring extending the second end of the axial portion. In one embodiment, the axial portion of the first contact ring may comprises first and second axially opposite ends, the second end of the axial portion of the first contact ring being able to be radially discontinuous, the second radial flange of the first contact ring formed by deformation of said second end having a plurality of radial lips, and the axial portion of the second contact ring may comprise first and second axially opposite ends, the second end of the axial portion of the second contact ring being able to be radially discontinuous, the second radial flange of the second contact ring formed by deformation of said second end having a plurality of radial lips. Advantageously, the manufacturing method may comprise the formation of a bevel on the periphery of the first radial flange of the first contact ring, the first radial flange of the first contact ring being positioned next to the pin, and the formation of a bevel on the periphery of the first radial flange of the second contact ring, the first radial flange of the second contact ring being positioned next to the pin. According to one feature, the manufacturing method may comprise the fitting of the first and second connecting portions of the connecting rod comprising a carbon-fibre-reinforced thermoplastic or thermosetting matrix. According to one feature, the manufacturing method may comprise the fitting of the pin comprising a metallic material, such as aluminium or an aluminium alloy. The invention also relates to a mounting assembly comprising a mounting shaft, a connecting rod provided with first and second connecting portions, and a pin, the first and second connecting portions of the connecting rod and the pin being positioned around said mounting shaft, the pin being disposed on the mounting shaft axially between the first and second connecting portions of the connecting rod, the articulation assembly also comprising: - a first contact ring interposed radially between the bore in the first connecting portion of the connecting rod and the mounting shaft, the first contact ring comprising: a first radial flange that extends an axial portion of the first contact ring towards the outside and is provided with a bearing surface that comes to bear axially against a first face of the first connecting portion of the connecting rod, and is provided with a contact surface that comes into axial contact with a first lateral face of the pin or is located next to said first lateral face, and a second radial flange that extends the axial portion towards the outside and is provided with a bearing surface that comes into axial contact with a second face of the first connecting portion of the connecting rod, - a second contact ring interposed radially between the bore in the second connecting portion of the connecting rod and the mounting shaft, the second contact ring comprising: a first radial flange that extends an axial portion of the second contact ring towards the outside and is provided with a bearing surface that comes to bear axially against a first face of the first connecting portion of the connecting rod, and is provided with a contact surface that comes into axial contact with a second lateral face of the pin or is located next to said second lateral face, and a second radial flange that extends the axial portion towards the outside, being provided with a bearing surface that comes into axial contact with a second face of the second connecting portion of the connecting rod; and a first axial space being provided between the first connecting portion of the connecting rod and the first face of the pin, and a second axial space being provided between the second connecting portion of the connecting rod and the second face of the pin. Brief description of the figures Further aims, advantages and features will become apparent from the following description, which is given purely by way of illustration and with reference to the appended drawings, in which: [Fig 1] is a view in cross section of a mounting assembly comprising a connecting rod and a pin according to the prior art. [Fig 2] is a view in cross section of a mounting assembly comprising a connecting rod and a pin according to one embodiment of the invention, [Fig 3] is a view in cross section of a mounting assembly comprising a connecting rod and a pin according to another embodiment of the invention. [Fig 4] is a side view of a mounting assembly according to one embodiment of the invention. [Fig 5] illustrates a method for manufacturing a mounting assembly according to one embodiment of the invention. Detailed description of the invention Figure 2 illustrates a mounting assembly 11 according to a first embodiment of the invention. The mounting assembly comprises a connecting rod 12 and a pin 13. The connecting rod 12 comprises at least one forked end forming a connecting rod clevis and having first and second connecting portions 14 and 15, respectively. The first connecting portion 14 has a bore 14a, a first face 14b and a second face 14c facing axially away from the first face 14b. The thickness of the first connecting portion 14 is defined by the first and second faces 14b and 14c. Similarly, the second connecting portion 15 comprises a bore 15a, a first face 15b and a second face 15c facing axially away from the first face 15b. The thickness of the second connecting portion 15 Is defined by the first and second faces 15b and 15c. The first and second connecting portions 14 and 15 of the connecting rod 12 and the pin 13 are positioned around a common mounting shaft 16 of the assembly. The mounting shaft 16 extends along an axis X. Moreover, the pin 13 is disposed on the mounting shaft 16 axially between the first and second connecting portions 14 and 15 of the connecting rod 12. The pin 13 comprises a first lateral face 13a and a second lateral face 13b facing axially away from the first lateral face 13a of the pin 13. The first and second lateral faces 13a and 13b define the thickness of the pin 13. The pin 13 also comprises a bore 13c bearing against the outer surface of the mounting shaft 16. The mounting assembly 11 also comprises first and second contact rings 17 and 18, respectively. The first contact ring 17 comprises an axial portion 19 having a bore 19a, an outer surface 19b facing radially away from the bore 19a, and first and second frontal faces 19c and 19d that face axially away from one another and define the axial length of the axial portion 19. Similarly, the second contact ring 18 comprises an axial portion 20 having a bore 20a, an outer surface 20b facing radially away from the bore 20a, and first and second frontal faces 20c and 20d that face axially away from one another and define the axial length of the axial portion 20. The first contact ring 17 is interposed radially between the bore 14a in the first connecting portion 14 of the connecting rod 12 and the mounting shaft 16. Similarly, the second contact ring 18 is interposed radially between the bore 15a in the second connecting portion 15 of the connecting rod 12 and the mounting shaft 16. In the example illustrated, the bore 19a in the axial portion 19 of the first contact ring 17 and the bore 20a in the axial portion 20 of the second contact ring 18 are positioned against the outer surface of the mounting shaft 16. In the example illustrated, the outer surface 19b of the axial portion 19 of the first contact ring 17 and the outer surface 20b of the axial portion 20 of the second contact ring 18 are positioned, respectively, against the bore 14a in the first connecting portion 14 and against the bore 15a in the second connecting portion 15. The first contact ring 17 comes to bear axially against the first lateral face 13a of the pin 13, and the second contact ring 18 comes to bear axially against the second lateral face 13b of the pin 13. Moreover, a first axial space 21 is provided between the first connecting portion 14 of the connecting rod 12 and the first face 13a of the pin 13. Similarly, a second axial space 22 is provided between the second connecting portion 15 of the connecting rod 12 and the second face 13b of the pin 13. The first frontal face 19c of the axial portion 19 of the first contact ring 17 is positioned in contact with the first lateral face 13a of the pin 13. Moreover, the second frontal face 20c of the axial portion 20 of the second contact ring 18 is positioned in contact with the second lateral face 13b of the pin 13. Furthermore, the first contact ring 17 comprises a first radial flange 23. The first radial flange 23 of the first contact ring 17 extends radially in the first axial space 21. In the example illustrated, the first radial flange 23 extends a first axial end of the axial portion 19 towards the outside. The first radial flange 23 of the first contact ring 17 is, moreover, provided with a contact surface 23a that is in contact with the first lateral face 13a of the pin 13 and extends the frontal face 19c of the axial portion 19 radially towards the outside. Similarly, the second contact ring 18 comprises a first radial flange 24. The first radial flange 24 of the second contact ring 18 extends radially in the second radial space 22. In the example illustrated, the first radial flange 24 extends a first axial end of the axial portion 20 towards the outside. The first radial flange 24 of the second contact ring 18 is provided with a contact surface 24a that is in contact with the second lateral face 13b of the pin 13 and extends the frontal face 20c of the axial portion 20 radially towards the outside. In the example illustrated, the first radial flange 23 of the first contact ring 17 comprises a bearing surface 23b that faces axially away from the contact surface 23a and comes into axial contact with the first face 14b of the 9 first connecting portion 14 which is disposed next to the first lateral face 13a of the pin 13. The first radial flange 23 of the first contact ring 17 extends axially between the first face 14b of the first connecting portion 14 and the first lateral face 13a of the pin 13. Similarly, the first radial flange 24 of the second contact ring 18 comprises a bearing surface 24b that faces axially away from the contact surface 24a and comes into axial contact with the first face 15b of the second connecting portion 15 which is disposed next to the second lateral face 13b of the pin 13. The first radial flange 24 of the second contact ring 18 extends axially between the first face 15b of the second connecting portion 15 and the second lateral face 13b of the pin 13. Furthermore, the first contact ring 17 may also comprise a second radial flange 25 which extends the axial portion 19 towards the outside. In the example illustrated, the second radial flange 25 extends a second axial end of the axial portion 19 that faces axially away from the first axial end. The second radial flange 25 of the second contact ring 17 is provided with a bearing surface 25a that comes into contact with the second face 14c of the first connecting portion 14 of the connecting rod 12. The second contact ring 18 also comprises a second radial flange 26 which extends the axial portion 20 towards the outside. In the example illustrated, the second radial flange 26 extends a second axial end of the axial portion 20 that faces axially away from the first axial end. The second radial flange 26 of the second contact ring 18 is provided with a bearing surface 26a that comes into contact with a second face 15c of the second connecting portion 15 of the connecting rod 12. The first radial flanges 23, 24 of the first and second contact rings 17 and 18 bearing against the pin 13 keep the first and second connecting portions 14, 15 of the connecting rod 12 at a distance from the pin 13. Such a configuration of the mounting assembly makes it possible to eliminate, by way of a simple and inexpensive means, the risks of the occurrence of galvanic corrosion associated with contacts between the connecting rod 12 and the pin 13. Furthermore, the presence of the first and second axial spaces 21, 22 between the first and second connecting portions 14, 15 of the connecting rod 12 and the pin 13 eliminate the need to have a smooth surface on the first faces 14b, 15b of the first and second connecting portions 14, 15. The manufacture of the mounting assembly 11 does not require a step of finishmachining the first faces 14b and 15b of the first and second connecting portions 14, 15. Rough-cast first and second connecting portions 14, 15 can be used. In the embodiment described in Figure 2, the frontal face 19c and the contact surface 23a of the first contact ring 17 are disposed in contact with the first lateral face 13a of the pin 13. Similarly, the frontal face 20c and the contact surface 24a of the second contact ring 18 are disposed in contact with the second lateral face 13b of the pin 13. In one embodiment variant, the frontal face 19c and the contact surface 23a of the first contact ring 17 may be disposed next to the first lateral face 13a of the pin 13, a small clearance being able to exist between the first lateral face 13a of the pin 13 and the first contact ring 17. Similarly, the frontal face 21d, the frontal face 20c and the contact surface 24a of the second contact ring 18 may be disposed next to the second lateral face 13b of the pin 13, a small clearance being able to exist between the second lateral face 13b of the pin 13 and the second contact ring 18. Advantageously, and as is illustrated in Figure 3, in which elements identical to the embodiment illustrated in Figure 2 bear the same references, the periphery of the first radial flange 23 of the first contact ring 17 and the periphery of the first radial flange 24 of the second contact ring 18 comprise a bevel 27 and 28, respectively. In one embodiment, the periphery of the second radial flange 25 of the first contact ring 17 and the periphery of the second radial flange 26 of the second contact ring 18 may also comprise a bevel. With reference to an embodiment of the mounting assembly 11 that is illustrated in Figure 4, in which elements identical to the embodiment illustrated in Figure 2 bear the same references, the second radial flange 25 of the first contact ring 17 has a plurality of radial lips 29 that are spaced apart from one another in the circumferential direction, in this case regularly. Similarly, the second radial flange 26 of the second contact ring 18 has a plurality of radial lips that are spaced apart from one another in the circumferential direction, in this case regularly. Advantageously, the material of the pin 13 may comprise a metal, for example aluminium or an aluminium alloy. Advantageously, the material of the first and second connecting portions 14 and 15 of the connecting rod 12 may comprise a carbon-fibre-reinforced thermoplastic or thermosetting matrix. The carbon-fibre reinforcements that improve the mechanical properties of the first and second connecting portions 14 and 15 of the connecting rod 12 can be recycled, for example by pyrolysis or vapo-thermolysis, after the mounting assembly 11 has been scrapped, for a future different use. Advantageously, the material of the first and second contact rings 17 and 18 may comprise a plastics material, a fibre-reinforced, such as glassfibre-reinforced, plastics material, or a metal or an alloy, such as a stainless steel or titanium. Figure 5 illustrates a method for manufacturing a mounting assembly 11 according to one embodiment of the invention, comprising the first and second connecting portions 14, 15 of the connecting rod 12 and the pin 13, which are assembled around the mounting shaft 16. The manufacturing method comprises a first step 100 of fitting the first contact ring 17 in the bore 14a in the first connecting portion 14 of the connecting rod 12 and fitting the second contact ring 18 in the bore 15a in the second connecting portion 15 of the connecting rod 12. At this stage, the axial portion 19 of the first contact ring 17 fitted on the connecting rod 12 in step 100 has, at a first end, the first radial flange 23. Similarly, the axial portion 20 of the second contact ring 18 fitted on the connecting rod 12 in step 100 has, at a first end, the first radial flange 24. The bearing surfaces 23b and 24b of the first and second contact rings 17, 18 come to bear axially against the first face 14a of the first connecting portion 14 of the connecting rod 12 and the first face 15a of the second connecting portion 15 of the connecting rod 12, respectively. In a second step 110, the manufacturing method comprises the formation of the second radial flange 25 of the first contact ring 17 and the formation of the second radial flange 26 of the second contact ring 18. The second radial flange 25 of the first contact ring 17 is obtained by deformation of the second end of the axial portion 19, such as riveting. The first radial flange 23 of the first contact ring 17 may be kept bearing against the first face 14b of the first connecting portion 14 of the connecting rod 12 during the deformation of the axial portion 19, which is compressed against the second face 14c of the first connecting portion 14 of the connecting rod 12, such as by riveting, in order to form the second radial flange 25. Similarly, the second radial flange 26 of the second contact ring 18 is obtained by deformation of the second end of the axial portion 20. The first radial flange 24 of the second contact ring 18 may be kept bearing against the first face 15b of the second connecting portion 15 of the connecting rod 12 during the deformation of the axial portion 20, which is compressed against the second face 15c of the second connecting portion 15 of the connecting rod 12, such as by riveting, in order to form the second radial flange 26. The first and second contact rings 17 and 18 are thus fixed in the bore 14a in the first connecting portion 14 of the connecting rod 12 and in the bore 15a in the second connecting portion 15 of the connecting rod 12, respectively. This mounting of the first and second contact rings 17 and 18 does not require additional means such as glue. Installation is quick and easy, without requiring, as would be the case for example for fastening by gluing, time for preparing the inner surface of the connecting rod 12 and the outer surface of the mounting rod 16, or time for application, curing, or cleaning. In a third step 120, the pin 13 is positioned axially between the first and second connecting portions 14, 15 of the connecting rod 12. The manufacturing method then comprises a fourth step 130 of fitting the pin 13 and the first and second connecting portions 14, 15 of the connecting rod 12, to which the first and second contact rings 17 and 18 are fixed, around the mounting shaft 16 such that the pin 13 is positioned axially between the first and second connecting portions 14, 15 of the connecting rod 12. The contact surface 23a of the first radial flange 23 of the first contact ring 17 comes into axial contact with the first lateral face 13a of the pin 13, forming the first axial space 21 between the first connecting portion 14 of the connecting rod 12 and the first face 13a of the pin 13. Furthermore, the contact surface 24a of the first radial flange 24 of the second contact ring 18 comes into axial contact with the second lateral face 13a of the pin 13, forming the second axial space 22 between the second connecting portion 15 of the connecting rod 12 and the second lateral face 13b of the pin 13. The second radial flange 25 of the first contact ring 17 and the second radial flange 26 of the second contact ring 18 may be radially continuous. Alternatively, the second radial flange 25 of the first contact ring 17 and the second radial flange 26 of the second contact ring 18, which are formed during the method for manufacturing the mounting assembly 11, may have a plurality of radial lips 29. In this case, the second end of the axial portion 19 of the first contact ring 17 and the second end of the axial portion 20 of the second contact ring 18 are radially discontinuous. The deformation of the second end of the radially discontinuous axial portions 19 and 20 results in the plurality of lips 29 being obtained. Advantageously, the manufacturing method may comprise the formation of a bevel 27 on the periphery of the first radial flange 23 of the first radial ring 17, said bevel being positioned next to the pin 13, and, similarly, of a bevel 28 on the first radial flange 24 of the second contact ring 18. Alternatively, the manufacturing method may comprise the fitting, in the first step 100, of a first contact ring 17 comprising the second radial flange 25 having a bearing surface 25a bearing against the second face 14c of the first connecting portion 14 of the connecting rod 12, and of a second contact ring 18 comprising the second radial flange 26 having a bearing surface 26a bearing against the second face 15c of the second connecting portion 15 of the connecting rod 12. In the second step 110, the first radial flange 23 of the first contact ring 17, which is intended to come into contact with the pin 13, may then be obtained by deformation of the axial portion 19, and the first radial flange 24 of the second contact ring 18 may be obtained by deformation of the axial portion 20. According to one example, the first and second connecting portions 14, 15 of the connecting rod 12 that are fitted around the mounting shaft 16 in 5 step 120 may comprise a carbon-fibre-reinforced thermoplastic or thermosetting matrix. According to one example, the pin 13 fitted around the mounting shaft 16 in step 120 may comprise a metallic material, such as aluminium or an aluminium alloy.

Claims

1. Method for manufacturing a mounting assembly (11) comprising first and second connecting portions (14, 15) of a connecting rod and a pin (13) that are assembled around a mounting shaft (16), the method comprising the following steps:- fitting (100) a first contact ring (17) in the bore (14a) in the first connecting portion (14) of the connecting rod (12), the first contact ring (17) comprising an axial portion (19) and a first radial flange (23) that extends the axial portion (19) towards the outside, the first radial flange (23) of the first contact ring (17) being provided with a bearing surface (23b) that comes to bear axially against a first face (14b) of the first connecting portion (14) of the connecting rod (12),and fitting (100) a second contact ring (18) in the bore (15a) in the second connecting portion (15) of the connecting rod (12), the second contact ring (18) comprising an axial portion (20) and a first radial flange (24) that extends the axial portion (20) towards the outside, the first radial flange (24) of the second contact ring (18) being provided with a bearing surface (24b) that comes to bear axially against a first face (15b) of the second connecting portion (15) of the connecting rod (12);- forming (110) a second radial flange (25) that extends the axial portion (19) of the first contact ring (17) towards the outside by deformation of the axial portion (19), the second radial flange (25) of the first contact ring (17) being provided with a bearing surface (25a) that comes to bear axially against a second face (14c) of the first connecting portion (14) of the connecting rod (12),and forming (110) a second radial flange (26) that extends the axial portion (20) of the second contact ring (18) towards the outside by deformation of the axial portion (20), the second radial flange (26) of the second contact ring (18) being provided with a bearing surface (26a) that comes to bear axially against a second face (15c) of the second connecting portion (15) of the connecting rod (12);- positioning (120) the pin (13) axially between the first and second connecting portions (14, 15) of the connecting rod (12), and- fitting (130) the pin (13) and the first and second connecting portions (14, 15) of the connecting rod (12) around the mounting shaft (16), the pin (13) being positioned axially between the first and second connecting portions (14, 15) of the connecting rod (12),one of the first and second radial flanges (23) of the first contact ring (17) being provided with a contact surface (23a) that comes into axial contact with a first lateral face (13a) of the pin (13) or is located next to said first lateral face (13a), and forming a first axial space (21) between the first connecting portion (14) of the connecting rod (12) and the first face (13a) of the pin (13), andone of the first and second radial flanges (24) of the second contact ring (18) being provided with a contact surface (24a) that comes into axial contact with a second lateral face (13b) of the pin (13) or is located next to said second lateral face (13b), and forming a second axial space (22) between the second connecting portion (15) of the connecting rod (12) and the second lateral face (13b) of the pin (13).

2. Manufacturing method according to Claim 1, wherein the outer surface (19b) of the axial portion (19) of the first contact ring (17) is positioned in contact with the bore (14a) in the first connecting portion (14),and the outer surface (20b) of the axial portion (20) of the second contact ring (18) is positioned in contact with the bore (15a) in the second connecting portion (15).

3. Manufacturing method according to Claim 1 or 2, wherein the axial portion (19) of the first contact ring (17) comprises first and second axially opposite ends, the first radial flange (23) of the first contact ring (17) extending the first end of the axial portion (19) towards the outside,and the axial portion (20) of the second contact ring (18) comprises first and second axially opposite ends, the first radial flange (24) of the second contact ring (18) extending the first end of the axial portion (20) towards the outside.

4. Manufacturing method according to any one of the preceding claims, wherein the axial portion (19) of the first contact ring (17) comprises first and second axially opposite ends, the second radial flange (25) extending the second end of the axial portion (19),and the axial portion (20) of the second contact ring (18) comprises first and second axially opposite ends, the second radial flange (26) of the second contact ring (18) extending the second end of the axial portion (20).

5. Manufacturing method according to any one of the preceding claims, wherein the axial portion (19) of the first contact ring (17) comprises first and second axially opposite ends, the second end of the axial portion (19) of the first contact ring (17) being radially discontinuous, the second radial flange (25) of the first contact ring (17) formed by deformation of said second end having a plurality of radial lips (29),and the axial portion (20) of the second contact ring (18) comprises first and second axially opposite ends, the second end of the axial portion (20) of the second contact ring (18) being radially discontinuous, the second radial flange (26) of the second contact ring (18) formed by deformation of said second end having a plurality of radial lips (29).

6. Manufacturing method according to any one of the preceding claims, comprising the formation of a bevel (27) on the periphery of the first radial flange (23) of the first contact ring (17), the first radial flange (23) of the first contact ring (17) being positioned next to the pin (13),and the formation of a bevel (28) on the periphery of the first radial flange (24) of the second contact ring (18), the first radial flange (24) of the second contact ring (18) being positioned next to the pin (13).

7. Manufacturing method according to any one of the preceding claims, comprising the fitting of the first and second connecting portions (14, 15) of the connecting rod (12) comprising a carbon-fibre-reinforced thermoplastic or thermosetting matrix.

8. Manufacturing method according to any one of the preceding claims, comprising the fitting of the pin (13) comprising a metallic material, such as aluminium or an aluminium alloy.

9. Mounting assembly (11) comprising a mounting shaft (16), a connecting rod (12) provided with first and second connecting portions (14, 15), and a pin (13), the first and second connecting portions (14, 15) of the connecting rod (12) and the pin (13) being positioned around said mounting shaft (16), the pin (13) being disposed on the mounting shaft (16) axially18 :between the first and second connecting portions (14, 15) of the connecting rod (12), the articulation assembly (11) also comprising:- a first contact ring (17) interposed radially between the bore (14a) in the first connecting portion (14) of the connecting rod (12) and the mounting shaft (16), the first contact ring (17) comprising:a first radial flange (23) that extends an axial portion (19) of the first contact ring towards the outside and is provided with a bearing surface (23b) that comes to bear axially against a first face (14b) of the first connecting portion (14) of the connecting rod (12), and is provided with a contact surface (23a) that comes into axial contact with a first lateral face (13a) of the pin (13) or is located next to said first lateral face (13a), anda second radial flange (25) that extends the axial portion (19) towards the outside and is provided with a bearing surface (25a) that comes into axial contact with a second face (14c) of the first connecting portion (14) of the connecting rod (12),- a second contact ring (18) interposed radially between the bore (15a) in the second connecting portion (15) of the connecting rod (12) and the mounting shaft (16), the second contact ring comprising:a first radial flange (24) that extends an axial portion (20) of the second contact ring (18) towards the outside and is provided with a bearing surface (24b) that comes to bear axially against a first face (15b) of the first connecting portion (15) of the connecting rod (12), and is provided with a contact surface (24a) that comes into axial contact with a second lateral face (13b) of the pin (13) or is located next to said second lateral face (13b), anda second radial flange (26) that extends the axial portion (20) towards the outside and is provided with a bearing surface (26a) that comes into axial contact with a second face (15c) of the second connecting portion (15) of the connecting rod (12); anda first axial space (21) being provided between the first connecting portion (14) of the connecting rod (12) and the first face (13a) of the pin (13), and a second axial space (22) being provided between the second connecting portion (15) of the connecting rod (12) and the second face (13b) of the pin (13).19

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