Adaptable fitting designed to connect two pipes

Abstract

TITLE: Adaptable fitting for connecting two conduits. Adaptable fitting for two fixed, non-coaxial conduits (C1, C2), comprising: - a first assembly (EA) with a base (1) fixed to the first conduit (C1) with axis (X1X1) and including a first adaptable sub-assembly (SEA), - a second assembly (EB) including a sleeve (2) fixed to the second conduit (C2) with axis (X2X2) and having an adaptable sub-assembly (SEB). The first and second sub-assemblies (SEA, SEB) are engaged with each other to adapt to the two conduits (C1, C2) so that, in the 3D adapted state, they block: longitudinal adaptation (ΔL), transverse adaptation (ΔR) (radial), and angular adaptation (Δα). Figure 1B

Description

Title of the invention: Adaptable connector intended to connect two pipes FIELD OF THE INVENTION

[0001] The present invention relates to an adaptable connector for connecting two pipes which are theoretically aligned but which, in practice, have slight alignment defects. STATE OF THE ART

[0002] It is known to equip engines with hot air exhaust or recovery ducts. Thus, aircraft turbojets are equipped with hot air recovery ducts under pressure and at high temperature, in particular for de-icing the wings and heating the cabin. These ducts are connected to the engine by rigid one-piece connectors which are often difficult to produce because of the positioning which is not always perfect.

[0003] However, conduits that are not exactly aligned can exist at multiple points in an installation and these different cases cannot be resolved by a single connection.

[0004] PURPOSE OF THE INVENTION

[0005] The aim of the present invention is to provide a connection for connecting a hot air recovery pipe to a turbojet engine by adapting to pipes that are not exactly aligned and meeting strict sealing and safety requirements.

[0006] DISCLOSURE AND ADVANTAGES OF THE INVENTION

[0007] To this end, the invention relates to an adaptable connector for joining two fixed, non-coaxial conduits, comprising a first assembly with a base intended to be fixed by one end, integrally and coaxially (to the first conduit, comprising at its other end a first adaptable sub-assembly and a second assembly comprising a sleeve intended to be fixed by one end integrally and coaxially to the second conduit and having at its other end an adaptable sub-assembly, the first and second sub-assemblies being engaged in each other to adapt to the two conduits in order, in the adapted state in 3D, to block: the longitudinal adaptation, the transverse (radial) adaptation, the angular adaptation of the connector.

[0008] The invention solves the problem of this diversity of possible cases by a 3D deformable connection to take the appropriate shape and which is then blocked to play its role as a rigid connection ensuring the sealing of the junction.

[0009] The connector according to the invention makes it possible to easily join two conduits which are not exactly coaxially aligned without requiring the production of a specific connector intended for each case, and producing a watertight connection under particularly severe conditions of use.

[0010] According to another characteristic, the second subassembly comprises at the second end of the sleeve, a ball joint provided with an annular cage, housed freely in radial sliding in a cylindrical housing with an axis coaxial with the axis of the first assembly, provided with a clamping ring, blocking by its compression the longitudinal and angular radial mobility of the cage and the ball joint on the base.

[0011] This transverse or, as the case may be, radial sliding makes it possible to easily adapt to two conduits whose axes are not intersecting, that is to say two axes which are not in the same plane.

[0012] According to another characteristic, the clamping ring intended to press the cage against the bearing surface of the cup has a right-angled section, one branch of which is cylindrical in shape and of circular section delimits the cavity receiving the cage, the other branch forms a bearing crown on the top of the cage, ending in a cylindrical fixing surface for a sealing bellows, the branch being connected to a bearing edge to come onto the shoulder of the cup around the cavity, the bearing edge having a top in the form of a peripheral ramp to cooperate with cramping fingers of the cup of the base.

[0013] This form of clamping ring simplifies the installation of the ball joint in the cavity intended for it in the cup since the cage can be partially covered by the clamping ring for its installation.

[0014] According to another characteristic, the end of the sleeve, opposite that connected to the pipe, has a peripheral rib and the ball joint in the form of a spherical crown has a cylindrical inner surface corresponding to the outer surface of the sleeve and provided with a peripheral groove receiving the rib, its axial length being greater than that of the rib to create axial mobility of the ball joint relative to the sleeve, the ball joint being formed of at least two segments to assemble on the rib.

[0015] This mounting of the ball joint on the sleeve allows axial adjustment by the possibility of axial movement of the ball joint relative to the sleeve.

[0016] According to another characteristic, the cage is formed by an upper crown and a lower crown intended to be assembled on the ball joint placed on the sleeve, the assembly of the two crowns forming a spherical interior surface of diameter equal to that of the ball joint with a cylindrical exterior surface, a top and a bottom, planes forming support surfaces.

[0017] This embodiment of the cage, the two crowns of which are connected to each other and each of which has a part of the spherical inner surface of the cage, necessarily joins along a diametrical plane perpendicular to the axis of the sleeve to form the spherical contour surface with the ball joint.

[0018] This embodiment with separate parts simplifies the ball joint / cage assembly to install on a sleeve whose ends have a relief.

[0019] According to another advantageous characteristic, the cup comprises, in its axial extension, starting from the sleeve:

[0020] - a clearance allowing the end of the sleeve to pivot,

[0021] - continuing with a support crown in a plane perpendicular to the axis of the base, surmounted by a cylindrical cavity forming part of the cavity receiving the cage,

[0022] - surmounted by a peripheral housing of larger diameter to receive a joint, and a shoulder above the housing to receive the bearing edge of the clamping ring.

[0023] This shape of the cup makes it possible to simply and effectively combine the different functions of longitudinal, transverse and angular adaptation of the conduits to be connected.

[0024] It should also be noted that the cavity of the cup which receives the ball joint and the cage can be formed solely by the cup, the clamping ring then being flat.

[0025] Nevertheless and as already indicated, the bell shape of the clamping ring facilitates assembly because the cage is already, in part, in the cavity delimited by the cylinder shape of the clamping ring.

[0026] According to another advantageous characteristic, the clamping fingers are provided with return springs installed in the upper edge of the cup and pushing the fingers towards the axis. The fingers thus allow the clamping ring to be clipped into the cavity.

[0027] According to another advantageous characteristic simplifying the manufacture of the base, the crenellations are covered by a covering ring fixed to the merlons without projecting radially from them to allow the ring to pass and descend under the fingers towards the shoulder.

[0028] .

[0029] According to another advantageous characteristic, the top of the cup covered by the covering ring is provided with a locking crown for locking the subassemblies having ramp cavities in its inner surface, in a position corresponding to that of the fingers to allow the radial retraction of the fingers pushed back by the passage of the edge of the ring and whose ramped bottom allows, by pivoting the crown on itself, to push back the fingers and to cover the top of the edge of the ring to press it onto the cage and lock it.

[0030] This crown guarantees the operation of the cramping fingers by authorizing or blocking their movement; it also makes it possible to obtain a significant guiding force of the clamping ring by the shape of the fingers and the support of the ramps of the locking crown.

[0031] According to another advantageous characteristic, the ball joint is formed of at least two segments to be assembled on the rib of the end of the sleeve. Brief description of the drawings

[0032] The present invention will be described below in more detail with the aid of embodiments of an adaptable connector, shown in the accompanying drawings in which:

[0033] [Fig-1] perspective view of the connector in an unsuitable aligned position,

[0034] [Fig. 1 A] partial exploded view of the connection of [Fig. 1],

[0035] [Fig.lB] schematic view of the axes of the conduits to be connected and of the elements connected to these conduits,

[0036] [Fig.2] axial section of the junction zone of the fitting,

[0037] [Fig.3] exploded axial half-section of the main elements of the connection,

[0038] [Fig.3A] partial axial section of the connection,

[0039] [Fig.3B] axial section of the fitting cup,

[0040] [Fig.3C] partial axial section highlighting the possible adaptations,

[0041] [Fig.4] exploded perspective view of the fitting adaptation junction area,

[0042] [Fig.5] schematic section showing the locking of the adapted connection by pivoting of the locking crown,

[0043] [Fig.6] shows schematic half-section views of the fitting cup with the installation of the ball joint and the clamping ring,

[0044] [Fig.7] different positions of a cramping finger,

[0045] [Fig.8] summary of the components of the connection.

[0046] DESCRIPTION OF EMBODIMENTS OF THE INVENTION

[0047] By convention, to facilitate the presentation of the drawings, the sectional views are, as the case may be, simplified by removing certain lines behind the sectional plane.

[0048] [Fig.l] shows a connector 100 according to the invention in a position aligned with its base axis (X1X1). The connector is composed, according to the decoupling of [Fig.lA], of a base assembly EA and an adaptable assembly EB for connecting ([Fig.lB]) a first conduit C1 defined by its connection surface S1 and a second conduit C2 defined by its connection surface S2; these connection surfaces are reference surfaces that are generally at least locally planar, each oriented relative to the respective axis (X1X1), (X2X2).

[0049] In theory, the conduits C1, C2 must be coaxial and separated by a given distance between their reference surfaces S1, S2 associated respectively with one and the other conduit. But, in practice, for multiple reasons, the conduits C1, C2 do not respect these ideal conditions but inevitably differ from them:

[0050] - the axes (X1X1), (X2X2) of the conduits Cl, C2 are generally neither:

[0051] * coaxial, or

[0052] * coplanar, or

[0053] * secants, or

[0054] - the reference surfaces SI, S2 are not exactly at their expected distance.

[0055] It is therefore necessary that for its installation, the connector 100 can be deformed in 3D to be able to be fixed to the surface SI of the first conduit C1 and to the surface S2 of the second conduit C2 and that after this installation and adapted shaping, the connector 100 can be blocked in this adapted geometric shape and be watertight.

[0056] [Fig. 1B] shows the orientation that the ends of the connection must take, emphasizing that in the general case (which is not the one shown), the axes (X1X1) and (X2X2) are not coplanar. For the purposes of presentation, the misalignment of the axes (X1X1) and (X2X2) is greatly exaggerated.

[0057] Figures 1, 1A show the connector 100 in perspective in its unadapted form with the two axes (X1X1), (X2X2) aligned and [Fig.lB] in section. It consists of the basic assembly (EA) comprising a base 1 fixed to the surface SI around the conduit Cl by a hooking by the shape defining the precise position of the base relative to the surface SI of the conduit Cl; the base 1 defines the axis (X1X1); it carries a subassembly (SEA) and adaptable assembly (EB) composed of a sleeve 2 aligned on the axis (X2X2) of the second conduit C2 and fixed thereto, as well as a second subassembly (SEB), intended to be adapted and assembled to the first subassembly (SEA).The adapted position of the subassemblies (SEA, SEB) once the connection is connected by its two ends, will be blocked in the 3D shape and in a watertight manner; this blocking is done as will be described using the following figures which, in detail, are axial or quasi-axial sectional views in the disassembled state, then in the assembled state and adapted to the conduits Cl, C2.

[0058] [Fig.2] is a simplified axial sectional view of the junction of the two subassemblies SEA, SEB, which will be adapted to the axes (X1X1), (X2X2) of the misaligned conduits C1, C2. This junction is shown before adaptation, in a position aligned with the axis (X1X1).

[0059] [Fig.3] is an exploded sectional drawing, showing the components of the two assemblies EA, EB of the connector 100.

[0060] The assembly EA consists of the base 1 provided with a fixing plate 11 which is fixed to the connection surface SI of the conduit Cl, thus defining the position and orientation of the axis (X1X1) of the assembly EA.

[0061] The fixing plate 11 is connected by a sleeve 12 to a cup 13 receiving the end of the SEB subassembly with means for retaining and locking in a position adapted to the axis (X2X2) of the conduit C2.

[0062] The sleeve 2 will be aligned on the axis (X2X2) and positioned along this axis to join the connection surface S2 ([Fig. IB]) to which it is welded by its end 2b.

[0063] Near its other end 2a facing the base 1, the sleeve 2 has a peripheral rib 21 for receiving and holding a ball joint 22 composed of segments 22a. The inner face 220 of this ball joint 22 is provided with a groove 221 of section adapted to that of the rib 21, but of greater axial length. The assembly of the segments 22a by their groove 221 on the rib 21 forms the ball joint 22.

[0064] The segments 22a, of length less than or equal to the half-periphery of the sleeve 2, for example, three in number, are held together by the cage 23 formed of two crowns, one of which (23a) is fitted onto the sleeve 2 before the segments 22a are put in place and the other (23b) comes from below the segments 22a to fit into the crown 23a: the two crowns 23a, 23b are assembled by pins 23c. The ball joint 22 composed of three segments allows it to be tightened uniformly on the periphery.

[0065] The two crowns 23a,b form the cage 23 whose spherical inner surface 231 corresponds to the curvature of the ball joint 22; to be able to engage on the ball joint 22, the two spherical surfaces 231a, 231b of the crowns 23a, 23b which form the spherical surface 231 of the cage 23 are assembled in a diametrical plane not shown, perpendicular to the axis (X2X2) of the sleeve 2; the external surface 232 is a cylindrical surface of circular section.

[0066] The cage 23 has a top 233 and a bottom 234, flat and parallel.

[0067] The assembly of the cage 23 on the ball joint 22 at the end 2a of the sleeve 2 appears in [Fig.3A],

[0068] The cage 23 is surmounted by a clamping ring 24 previously installed on the sleeve 2 and intended to cover the cage 23 in the housing that the ring 24 forms with the cup 13 of the base 1.

[0069] [Fig.3B] shows in section the assembly by clipping of the clamping ring 24 in the cup 13 forming the circular cavity CA receiving the cage 23. Its height is slightly less than the thickness of the cage 23, which will allow, when clamping the cage 23 between the two components of the cage CA, to bring the rings 23a and 23b closer together, and consequently to push the segments 22a against the sleeve 2, and to clamp it. The diameter of the cavity CA is greater than that of the cage 23, thus giving the cage 23 the possibility of sliding transversely to adapt the geometry of the connection. This adaptation will be blocked at the end of installation of the connection 100 by the clamping of the ring 24 against the cage 23 in the cavity CA.

[0070] The sectional view of the simplified drawing of [Fig.3C] shows the completed assembly of the junction zone of the two sub-assemblies SEA, SEB (here in coaxial position along the axis (X1X1)) highlighting the different adaptation possibilities:

[0071] * the sleeve 2 can slide longitudinally relative to the ball joint 22 by its rib 23 in the groove 221 of the ball joint 22 according to the difference in axial length AL between the length L21 of the rib 21 and the axial length L221 of the groove 221 of the ball joint 22.

[0072] * the sleeve 2 can pivot by its ball joint 22 in the cage 23 considered as oriented along the axis (X1X1) of fixed orientation. This freedom of pivoting Aa relative to the center O of the ball joint 22 is shown between the axes (X1X1) / (X2X2) passing through the center O.

[0073] * The sleeve 2 can move transversely relative to the fixed axis (X1X1) (because defined by the base 1) by the transverse sliding of the cage 23 in the housing CA, of the difference in the diameters of the housing CA and of the cage 23. This possibility of transverse displacement (AR) is indicated in the plane of [Fig.3C] by the two extreme positions 01, 02 of the center O of the ball joint 22 on either side of the unadapted position on the axis X1X1.

[0074] The axis (X1X1) is the axis of the base 1; [Fig.3C] and some of the other figures were drawn on the assumption of the intersection of the coplanar axes (X1X1), (X2X2); then the center O of the ball joint would be located on the axis (X1X1).

[0075] But, in the non-exceptional hypothesis of non-intersecting axes (X1X1) and (X2X2), the center of rotation of the ball joint is located at a point Ov on the axis (X1X1) between 01 and 02 and the inclination Aa will be the inclination between the axis (X2X2) of the conduit C2 on which the sleeve 2 is fitted and the axis (XVXV) parallel to the axis (X1X1). This appears in the detail (D) shown on an enlarged scale.

[0076] In other words, in the case of the axis X2X2 not intersecting the axis (X1X1), the center of the ball joint, through which the axis (X2X2) passes, will be moved towards a point Ov of the disk with center O on the axis (X1X1) and diameter 0102, i.e. 2AR; this diameter is that of the disk resulting from the cumulative offset between the cage 23 and the wall of the cavity CA.

[0077] The components of the base 1 forming the SEA subassembly receiving the sleeve 2 equipped with its ball joint 22, its cage 23 and the clamping ring 24 will be described below with the aid of figures 3, 3A, 3B, 4.

[0078] The cup 13 has a stepped cavity formed from a succession of cylindrical surfaces of circular section with axis (X1X1) ([Fig.3B]):

[0079] * Above the sleeve 12, the cup 13 has a support ring 132 forming the below a first cylindrical cavity 133 which is the lower part of the cavity CA receiving the cage 23.

[0080] * Under this cavity 133, there is a cylindrical clearance 131 and above, a low cylindrical cavity 134 for a seal 51 ([Fig.3C]). The clearance 131 receives the lower edge of the sleeve 2 and allows it to pivot ( [Fig.3A]).

[0081] * Above the cavity 134, a peripheral shoulder 135 forms a support for the clamping ring 24.

[0082] According to [Fig.4], the upper edge 136 of the cup 13 carries merlons 137 leaving between them radially oriented crenellations 138 and having faces 138a parallel to their median plane passing through the axis (X1X1). The crenellations 138 receive radially sliding cramping fingers 3, pushed inwards by springs 31 housed in cavities 136a from above the upper edge 136 in the crenellations 138. The spring 31a has two branches 311, 312.

[0083] The cramping fingers 3 ([Fig.3A]) have a rectangular vertical section (median plane), ending in a triangular beak 32 formed of two ramps:

[0084] - an upper ramp 32a receiving the outer edge 241 of the clamping ring 24 pressed to sink, push back the fingers 3 and pass under them to lodge against the shoulder 135,

[0085] - a lower ramp 32b with a slope corresponding to that of the peripheral ramp 241 of the edge of the clamping ring 24 to slide on it and rest to keep the clamping ring 24 applied against the top 23a of the cage 23 and block it when the fingers 3 themselves are blocked.

[0086] [Fig.3B] shows, in a simplified manner, the assembly of the clamping ring 24 clipped into the cup 13, highlighting the different parts in contact with the ring 23, the ball joint 22 and the sleeve 2.

[0087] The crenellated top of the upper edge 136 of the cup 13 receives a set of cramping fingers 3 each combined with a spring 31 and held in the crenellations 138, free to slide, by a cover ring 4 fixed to the merlons 137. The top of the base 1 receives a locking ring 6 held to the cup 13 by a clipping ring 52 allowing the rotation of the ring 6 relative to the cup 13 ([Fig.3C]).

[0088] The cylindrical locking ring 6 surrounding the edge 136 of the cup 13 and its merlons 137 has a return 61 covering the cover ring 4 without projecting beyond it. The cylindrical inner surface 6a of the ring 6 bears against the edge 136 of the cup 13 and that of the cover ring 4 as well as against the merlons 137 and the back of the fingers 3.

[0089] On a circular segment overlapping the location corresponding to that of each of the fingers 3 (part A, [Fig.5]), the inner surface 6a of the crown 6 comprises peripheral cavities 62 with a bottom 621 with a ramp 621a providing a radial clearance of variable depth to the fingers 3 to allow the clamping ring 24 to push them radially outwards and pass under the end of the fingers. The peripheral cavities 62 each associated with a finger 3 extend over a circular sector with their bottom 621 with a ramp, of maximum depth (depth in the radial direction) sufficient to allow the associated finger 3 to retract against the action of the spring 31 and to be radially level with the inner cylindrical surface of the cover ring 4, the merlons 137 and the part of the shoulder 135. At the end opposite its greatest depth from the bottom 621, the ramp 621a joins the inner surface 6a, preferably by tangency.

[0090] [Fig.5] in part A, shows the crown 6 in the untightened position allowing, through its cavity 62, the retraction of the finger 3 for the passage of the edge of the tightening ring 24.

[0091] Part B shows the crown 6 after it has pivoted a fraction of a turn; the bottom 621 of the cavity 62 has now pushed back the fingers 3 and blocked the entire connection 100.

[0092] The finger 3 is retracted into the assembly position of the crown 6; the deployed position (part B) is that at the end of the pivoting of the crown 6 by a fraction of a turn to lock the different components of the connection 100.

[0093] In other words, the bottom 621 of each cavity 62 has a bottom 621 with a ramp 621a allowing, by the rotation of the crown 6, to push the fingers 3 against the top of the peripheral ramp 241 of the clamping ring 24 to block it as well as the cage 23. The pivoting of the clamping crown 6 is done by hand or with a key attached to the crown 6.

[0094] The sealing of the connection 100 is achieved by a bellows 5 fixed (welded) to the upper end 2a of the sleeve 2 and to the end 245 of the ring 24 and by the metal seal 51 hooked into the peripheral groove 134 ([Fig.2], figures 3C).

[0095] [Fig.6], in its parts B and C shows the installation of the clamping ring 24 with its bellows 5. The edge of the ring 24 presses on the top 32a of the fingers 3 until it can pass between the fingers and place itself under them, until the final position (part C) with the blocking of its fingers 3 pushed back by the blocking crown 6 and blocked by the latter.

[0096] [Fig.7] shows an embodiment of a clamping finger 3 in its retracted position (part A) for the passage of the clamping ring 24 not shown. The finger 3 is retracted into the cavity 62 of the crown 6 pivoted into its release position.

[0097] The back 33 having a cylindrical surface shape of the cramping finger 3 has a truncated corner 331 and the ramp 621a is a surface with low curvature to provide significant contact with the truncated corner 331 when the ring 6 is rotated a fraction of a turn to push the finger 3 back.

[0098] The position of part B is an intermediate position.

[0099] The position of part C is the end-of-travel position. The crown 6 is pivoted in the locking position and the bottom 621 of the cavity 62 is pressed by its cylindrical surface of circular section against the back of the finger, in its position of locking the clamping ring 24 by the locking crown 6.

[0100] The pivoting movement of the crown 6 is underlined by the marks P1P2 of the sector of the crown 6 and its locking pivoting direction.

[0101] [Fig.8] presents in summary the SEA, SEB subassemblies whose components have been detailed above.

[0102] NOMENCLATURE OF MAIN ELEMENTS

[0103] 100 Connection

[0104] EA Basic Set

[0105] EB Adaptable set

[0106] SEA Subset of EA

[0107] SEB Subset of EB

[0108] Cl Basic Conduit

[0109] C2 Conduit to be connected

[0110] O Center of rotation of the fracture

[0111] SI Connection surface of the Cl conduit

[0112] S2 Connection plan of conduit C2

[0113] X1X1 Base axis / axis of conduit Cl

[0114] X2X2 Axis of the adaptable sleeve / axis of the conduit C2

[0115] XV, XV Axis parallel to the axis X1X1 passing through the center of rotation O of the ball joint

[0116] 1 Base

[0117] 11 Fixing plate

[0118] 12 Sleeve

[0119] 13 Cup

[0120] 131 Clearance

[0121] 132 Support crown

[0122] 133 Cylindrical cavity

[0123] 134 Peripheral seal housing

[0124] 135 Shoulder

[0125] 136 Upper edge of the cup

[0126] 136a Cavity for spring 3

[0127] 137 Merlon

[0128] 138 Slot

[0129] 138a Face of the crenel

[0130] 2 Adaptable sleeve

[0131] 21 Peripheral rib

[0132] 22 Ball joint

[0133] 22a Spherical crown segment of the ball joint

[0134] 220 Inner face of the patella

[0135] 221 Gorge

[0136] 23 Ball joint cage

[0137] 23a Upper crown

[0138] 23b Lower crown

[0139] 231 Spherical surface of the cage

[0140] 232 Outer surface of the cage

[0141] 233 Top of the cage

[0142] 234 Under the cage

[0143] 24 Clamping ring

[0144] 241 Peripheral ramp

[0145] 242 Support edge on the base

[0146] 243 Cylindrical wall radially delimiting the cavity CA

[0147] 244 Support crown

[0148] 245 Bellows fixing surface

[0149] 3 Cramp Finger

[0150] 31 Spring

[0151] 311 Spring branch

[0152] 312 Spring branch

[0153] 32 Wedge beak

[0154] 32a Upper ramp

[0155] 32b Lower ramp

[0156] 33 Back

[0157] 331 Truncated corner

[0158] 4 Cover ring

[0159] 5 Bellows

[0160] 51 Joint

[0161] 52 Clipping ring

[0162] 6 Locking crown

[0163] 6a Inner surface of the crown

[0164] 61 Return

[0165] 62 Peripheral cavity

[0166] 621 Cavity bottom

[0167] 621a Ramp

Claims

Claims

1. Adaptable connection intended to join two fixed, non-coaxial conduits (Cl, C2), comprising: - a first assembly (EA) with a base (1) intended to be fixed by one end, integrally and coaxially to the first conduit (Cl) of axis (X1X1) and comprising at its other end a first adaptable sub-assembly (SEA), - a second assembly (EB) comprising a sleeve (2) intended to be fixed by one end (2a) integrally and coaxially to the second conduit (C2) of axis (X2X2) and having at its other end (2b) an adaptable sub-assembly (SEB), - the first and second sub-assemblies (SEA, SEB) being engaged one in the other to adapt to the two conduits (Cl, C2) in the adapted state: - longitudinal adaptation (AL), - transverse adaptation (AR) (radial), - angular adaptation (Aa).

2. Connection according to claim 1, characterized in that the second subassembly (SEB) comprises at the second end (2b) of the sleeve (2), a ball joint (22) provided with an annular cage (23), housed free to slide radially in a cylindrical housing (CA) with an axis coaxial with the axis (X1X1) of the first assembly (EA), provided with a clamping ring (24), blocking by its compression the radial mobility (AR) and the angular mobility (Aa) of the cage (23) and the ball joint (22) on the base (1).

3. Fitting (100) according to claim 2, characterized in that the clamping ring (24) intended to press the cage (22) against the bearing surface (132) of the cup (13) has a right-angled section of which, - one branch (243) of cylindrical shape with a circular section delimits the cavity (CA) receiving the cage (23), - the other branch (244) forms a bearing crown (244) on the top of the cage (23), - ending in a cylindrical fixing surface (245) for a sealing bellows (5), - the branch (243) being connected to a bearing edge (242) to come onto the shoulder (135) of a cup (13) around the cavity (CA), - the bearing edge (242) has a peripheral ramp-shaped top (241) for cooperating with locking fingers (3) of the cup (13) of the base (1).

4. Fitting (100) according to claim 2, characterized in that the end (2a) of the sleeve (2) opposite that connected to the pipe (C2) has a peripheral rib (21) and, - the ball joint (22) in the form of a spherical crown has a cylindrical inner surface (220) corresponding to the outer surface of the sleeve (2) and provided with a peripheral groove (221) receiving the rib (21) and of axial length (L221) greater than that (L21) of the rib (21) to create axial mobility (AL) of the ball joint (22) relative to the sleeve (2), the ball joint (22) being formed of at least two segments (22a) to assemble on the rib (221).

5. Connection (100) according to claim 2, characterized in that the cage (23) is formed by an upper crown (23a) and a lower crown (23b) intended to be assembled on the ball joint (22) placed on the sleeve (2), - the assembly of the two crowns (23a, b) forming * a spherical inner surface (231) of diameter equal to that of the ball joint (22), * a cylindrical outer surface (232), * a top (233) and a bottom (234), planes forming support surfaces.

6. Fitting (100) according to claim 3, characterized in that the cup (13) comprises: - starting from the sleeve (2), in its axial extension (X1X1): - a clearance (131) allowing the pivoting of the end of the sleeve (2), - continuing with a support ring (132) in a plane perpendicular to the axis (X1X1) of the base (1), - surmounted by a cylindrical cavity (133) forming a part of the cavity (CA) receiving the cage (23), - surmounted by a peripheral housing (134) of larger diameter to receive a seal (52), - a shoulder (135) above the housing (134) to receive the support edge (242) of the clamping ring (24).

7. Connection according to claim 6, characterized in that the cup (13) has an upper edge (136) formed of merlons (137) delimiting radial notches (138) whose parallel sides (138a) receive cramping fingers (3), radially movable to retract and allow the positioning and blocking of the ring (24) against the top of the cage (23) housed in the cavity (CA).

8. Connection according to claim 7, characterized in that the cramping fingers (3) are provided with return springs (31) mounted in the upper edge (136) of the cup (13) and pushing the fingers (3) towards the axis (X1X1).

9. Connection (100) according to claim 7, characterized in that the notches (138) are covered by a cover ring (4) fixed to the merlons (137) without projecting radially from them to allow the passage and descent of the ring (24) under the fingers (3) towards the shoulder (135).

10. Connection (100) according to claim 6, characterized in that the top (136) of the cup (13) covered by the cover ring (4) (135) is provided with a locking crown (6) for locking the subassemblies (SEA, SEB) having in its inner surface ramp cavities in position corresponding to that of the fingers (3) to allow the radial retraction of the fingers pushed back by the passage of the edge of the ring (24) and whose ramped bottom allows, by pivoting the crown (6) on itself, to push back the fingers (3) and to cover the top (241) of the edge of the ring (24) to press it onto the cage (23) and lock it.

11. Connection (100) according to claim 4, characterized in that the ball joint (22) is formed of at least two and preferably three segments (22a) to assemble on the rib (221) of the end (2a) of the sleeve (2).

12. Fitting (100) according to any one of claims 7 to 10, characterized in that the fingers (3) have a back (33) with a curved section with a truncated corner (331) to come into contact with the ramp (621a) from the bottom (621) to the contact of the finger (3) in the retracted position to push the finger (3) back by pivoting the crown (6) to the locking position of the finger (3) by the inner surface (6a) of the crown (6).

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