Sleeve for receiving ball joint for receiving rotating shaft of blade member of ventilation device

Abstract

The invention proposes a sleeve for receiving a ball joint for accommodating a rotating shaft of a blade member of a ventilation device, the sleeve comprising:-a cylindrical outer wall extending around a central axis X and defining an inner space; -an open back side; -a front face for receiving the shaft; -an inner skirt connected to the outer wall and defining a housing capable of receiving a ball joint, the housing being partially spherical and having a front opening leading to the front face, the front opening being capable of receiving a shaft. The sleeve includes means for sealing the housing at the front opening.

Description

Technical Field

[0001] The invention relates to a sleeve for receiving a ball joint of a rotating shaft accommodating a blade member of a ventilation device.

[0002] The invention also relates to an assembly consisting of a sleeve and a ball joint.

[0003] Then, it comes to the ventilation unit itself.

[0004] The invention also relates to a method for installing a ventilation device.

[0005] Finally, the invention relates to a cooling module for a motor vehicle comprising such a ventilation device. Background Art

[0006] A cooling module (or heat exchange module) of a motor vehicle generally comprises at least one heat exchanger and a ventilation device designed to generate an air flow in contact with the heat exchanger when the vehicle is stationary or moving slowly.

[0007] In a motor vehicle with a conventional internal combustion engine, the heat exchanger is positioned facing at least two cooling openings formed in the front end of the motor vehicle body. The first cooling opening is located above the bumper, while the second opening is located below the bumper. This configuration is preferred because the internal combustion engine must also be supplied with air, the air intake of the engine usually being located in the path of the air flow passing through the upper cooling opening.

[0008] However, the electric vehicle is preferably provided with a single cooling opening located below the bumper.

[0009] This is because the electric motor does not need to be supplied with air. The reduction in the number of cooling openings also makes it possible to improve the aerodynamics of the electric vehicle. This also leads to better mileage and a higher top speed for the motor vehicle.

[0010] In order to accommodate a smaller number of cooling openings, it is particularly advantageous to use components with tangential blades in order to create an air path towards the heat exchanger.

[0011] This member with the tangential blades is rotated by an electric motor.

[0012] The blade member is rotatably mounted in the housing. A first shaft extends from a first side end of the blade member and is connected to a rotor of a motor. A second shaft extends from a second side end of the blade member.

[0013] The two shafts are positioned in the housing in a precise manner relative to each other along the same axis, which axis corresponds to the axis of rotation of the blade members and the rotor.

[0014] The first shaft is mounted in a roller bearing which is arranged in a cylindrical bearing surface which is provided for this purpose in the housing of the blade member. The roller bearing is mounted in a clamped state in the bearing surface in order to correctly guide the shaft.

[0015] The second shaft is mounted in a clamped state in a ball joint which is rotationally movable in an elastic sleeve which is mounted in a clamped state in the housing. The ball joint allows compensating for poor alignment of the second shaft relative to the first shaft. The elastomer sleeve serves to filter the vibrations generated by the rotation of the shaft and the blades.

[0016] Nowadays, the cooling module, and therefore the ventilation unit with sleeves and ball joints, is located under the hood of the car, in an area that is very likely to get dirty and contaminated. This is because when the vehicle is moving, the tires spray dirt and water from the road into this area. As a result, the housing gets dirty, and so does the drive shaft. Now it is undesirable for the shaft to carry dirt inside the sleeve, in which case the ball joint will no longer be able to move correctly and will no longer be able to perform its function. In the event of dirtiness, the vibrations will be more intense, since they are not absorbed by the sleeve, the noise generated by the rotation of the shaft will be louder, and any misalignment of the shaft will lead to its breakage.

[0017] The object of the present invention is to improve the ventilation device of an electric vehicle by providing a novel solution for protecting the sleeve from soiling over a long period of time while allowing an easy insertion of the ball joint into the sleeve. Summary of the invention

[0018] This object is achieved by a sleeve for receiving a ball joint, the ball joint receiving a rotation axis of a blade member of a ventilation device, the sleeve comprising:

[0019] - a cylindrical outer wall extending around the central axis X and defining an inner space;

[0020] - open back;

[0021] - a front side for receiving the shaft;

[0022] - an inner skirt connected to the outer wall and defining a housing suitable for housing the ball joint, the housing being part-spherical and having a front opening open at the front, suitable for housing the shaft.

[0023] The essential feature of the sleeve is that it comprises the sealing means of the housing in the region of the front opening.

[0024] The main concept of the invention consists in sealing the front opening of the housing in which the ball joint is located. In this way, no dust or moisture can enter the interior of the housing through the opening for receiving the shaft.

[0025] It is necessary to keep the housing clean so that the ball joint can move correctly within the housing with the lubrication provided for this purpose.

[0026] Lubricant mixed with dust or moisture is no longer able to perform its lubricating function, so it is necessary to regularly dismantle the shaft from the sleeve, the sleeve from the housing and finally the ball joint from the sleeve so that the housing can be cleaned and refilled with clean lubricant.

[0027] Since the sealing device is arranged in the region of the front opening of the housing, such maintenance operations are no longer necessary.

[0028] According to various embodiments of the present invention, these embodiments can be used together or separately:

[0029] - the sealing means of the housing comprise an annular lip extending from the skirt and adapted to come into contact with the shaft;

[0030] - the sleeve comprises a sealing device having a protective housing for the blade member;

[0031] - the sealing device having the protective housing comprises at least one radial protrusion extending from the outer surface of the outer wall and extending all the way around the outer wall;

[0032] - the sleeve comprises means for insertion into the ball joint via its back side;

[0033] - the device for inserting the ball joint comprises a rear opening which is arranged in the housing and opens into the interior space and into an open back side;

[0034] - the rear opening is coaxial with the front opening according to the axis X;

[0035] The sleeve is configured to be made in one piece from an elastomeric material.

[0036] The invention also relates to an assembly comprising a sleeve as described above and a ball joint which is shape-displaceable within a housing and which conforms to the internal shape of the housing.

[0037] Preferably, the inner skirt has a flexible rearward end defining a rear opening and sized to enable insertion into the ball joint by elastic deformation.

[0038] According to the invention, the inner skirt has a front end defining a front opening and provided with a constriction dimensioned to allow the shaft to be inserted and to retain the ball joint in the housing, the constriction supporting the sealing means of the housing.

[0039] The invention also relates to a ventilation device extending in an axial direction X and comprising:

[0040] - a blade member comprising a protective casing for the blade, the protective casing comprising a lower half shell assembled with an upper half shell;

[0041] - an electric motor comprising a rotor which rotates the blade member via a first shaft having an axis X, the first shaft extending from a first end of the blade member;

[0042] The blade member comprises a second shaft having an axis X, which extends from the second end of the blade member and is mounted in an assembly as described above, the shaft being inserted into the sleeve via its front face and mounted in a clamped state in the ball joint, the shaft being in fluid-tight contact with a sealing device arranged on the front face of the sleeve.

[0043] In an advantageous manner, the housing comprises a cylindrical receiving chamber for the sleeve, which receiving chamber surrounds the outer wall of the sleeve, and the at least one radial projection presses against the housing after closing thereof.

[0044] Advantageously, the ventilation device comprises an axial blocking device for the sleeve relative to the closure housing.

[0045] According to a possible variant, these axial blocking means comprise:

[0046] - a shoulder formed on the outer wall of the sleeve to reduce the outer diameter of the sleeve in the area of ​​its front face;

[0047] - At least one leg extending from the inner surface of the casing perpendicularly to the axis X and adapted to move against the shoulder in the event of any axial movement of the sleeve towards the blade member.

[0048] The present invention also relates to a method for installing a ventilation device as described above. The method comprises the following steps:

[0049] - inserting the ball joint into the housing of the sleeve through the back face of the sleeve and the rear opening of the housing in a first direction by an axial translation in the direction of the axis X;

[0050] - inserting the shaft into the sleeve via the front face of the sleeve and the front opening of the housing, and then clamping the shaft in the ball joint by axial translation in the direction of the axis X in a second direction opposite to the first direction;

[0051] - Closing the housing by assembling the upper half-shell onto the lower half-shell in order to compress the radial sealing protrusions provided on the outer wall of the sleeve.

[0052] Finally, the invention relates to a cooling module for a motor vehicle, comprising a ventilation device as described above, and at least one heat exchanger situated in the path of the air generated by the ventilation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Further features and advantages of the present invention will become apparent from reading the following detailed description, for which reference will be made to the accompanying drawings, in which:

[0054] Figure 1 shows a perspective, partial cutaway view of a cooling module for an electric vehicle;

[0055] Figure 2 Shown according to Figure 1 A cross-sectional view of a detail of one end of a ventilator of a cooling module;

[0056] Figure 3 shows an exploded cross-sectional view of a sleeve according to the prior art with a ball joint and a shaft inserted therein;

[0057] Figure 4 Shows Figure 3 A perspective view of a sleeve;

[0058] Figure 5 shows an exploded cross-sectional view of a sleeve according to a first possible configuration of the invention, with a ball joint and a shaft inserted therein;

[0059] Figure 6 shows an exploded cross-sectional view of a sleeve according to a second possible configuration of the invention, with a ball joint and a shaft inserted; and

[0060] Figure 7 Shows Figure 6 Perspective view of the sleeve. DETAILED DESCRIPTION

[0061] In the rest of the specification, elements having the same structure or similar functions will be denoted by the same reference numerals.

[0062] In the remainder of the description, axial and radial orientations will be used in a non-limiting manner and without reference to the Earth's gravity field.

[0063] Typically, the "axial" direction corresponds to Figure 1 The central axis X shows the main extension direction of the ventilation device, while the "radial" direction is orthogonal to the axial direction.

[0064] In the same way, the terms "external or outer" and "inner or inner" are used relative to the radial direction, the outer element being radially further from the axis X than the inner element.

[0065] Figure 1 A cooling module 1 for a motor vehicle is generally described, in particular with an electric motor.

[0066] like Figure 1 As shown, the cooling module 1 comprises a ventilation device 2 .

[0067] The ventilation device 2 extends axially along an axis X and comprises an electric motor 3 associated with a blade member 4 which generates an air path towards a heat exchanger (not shown) situated below the blade member 4 .

[0068] The connection between the electric motor 3 and the blade member 4 is achieved via a first shaft 5 which extends from the rotor of the motor 3 and rotates the blade member 4 .

[0069] The blades 6 are oriented tangentially to an axis X, which corresponds to the axis of rotation of the blade member 4 .

[0070] In order to protect the blades 6, the ventilation device 2 comprises a protective housing 8 consisting of a lower half shell 8a and an upper half shell 8b.

[0071] The half-shells 8a, 8b are adapted to be nested one inside the other in order to close the housing 8. The lower half-shell 8a serves as a support and the upper half-shell 8b serves as a cover.

[0072] A first rotating shaft 5 extends between a first side end of the ventilation device 2 and the rotor of the motor 2. The first shaft 5 is fixed in place in a bearing surface of the housing 8 by means of a roller bearing 9.

[0073] The blade member 4 includes a second rotating shaft 10 extending from a second side end of the ventilation device 2, and the second shaft 10 is connected to an elastomeric sleeve 7, which is used to filter the vibrations generated by the rotation of the second shaft 10 and the blade 6, and is also used to compensate for any misalignment of the second shaft 10 relative to the first shaft 5.

[0074] Figure 2 The connection between the second shaft 10 and the sleeve 7 is shown in more detail.

[0075] exist Figure 2 A sleeve 7 according to the prior art is included.

[0076] The sleeve 7 is accommodated in a cylindrical receiving chamber 28 which is provided for this purpose in the housing 8. Thus, the upper half-shell 8b forms one half of this chamber 28 and the lower half-shell 8a forms the other half of this chamber 28.

[0077] The sleeve 7 comprises a partially spherical housing 16 in which a lubricated ball joint 11 is located, which is freely movable in rotation in the housing 16. The second shaft 10 is mounted in the ball joint 11 in a clamped state so that the ball joint 11 rotates together with the shaft 10 in the housing 16 of the sleeve 7.

[0078] The sleeve 7 comprises:

[0079] a so-called “front” face 23 for receiving the shaft 10 ; and

[0080] A so-called “rear” face 24 , opposite the front face 23 and situated opposite the base of the chamber 28 of the housing 8 .

[0081] like Figure 3 As shown, the assembly sequence is as follows:

[0082] - inserting the ball joint 11 into the sleeve 7 via a front opening 17 which is arranged in the receiving housing 16 in an axial direction having the axis X;

[0083] The second shaft 10 is inserted into the housing 16 via the front opening 17 and then into the ball joint 11 in an axial direction with the axis X.

[0084] Both the ball joint 11 and the second shaft 10 are inserted along the axis X in the same direction through the front opening 17 .

[0085] Therefore, the front opening 17 must be large enough to accommodate the ball joint 11 .

[0086] In this case, the housing 16 is delimited by an inner skirt 12 extending inside the sleeve 7. The front end 29 of the skirt 12 thus defines the front opening 17 of the housing 16. This front end 29 is relatively flexible so as to be able to deform so as to easily introduce the ball joint 11 into the housing 16. The rear end 18 of the skirt 12 is itself closed.

[0087] The sleeve 7 is a hollow part produced by rotation and generally comprises an outer wall 13 of cylindrical appearance, defining an inner space 14 .

[0088] Preferably, the outer wall 13 conforms to the shape of the chamber 28 of the housing 8 so that the gap between the sleeve 7 and the housing 8 is minimized.

[0089] The inner skirt 12 is located in the inner space 14 and is connected to the outer wall 13 of the sleeve 7 by means of a collar 30 , for example annular.

[0090] The sleeve 7 is produced in one piece, for example, by molding.

[0091] The sleeve 7 is made of an elastic material of the elastomer type, thereby giving it a certain flexibility and allowing it to absorb vibrations. For example, it can be made of EPDM or chloroprene.

[0092] Figure 4 It is shown that the outer wall 13 of the sleeve 7 is provided with a plurality of axial protrusions 20 which are adapted to come into contact with the inner wall of a chamber 28 of the housing 8 and in particular to be compressed when the housing 8 is closed, thereby blocking any radial movement of the sleeve 7 inside the chamber 28 .

[0093] like Figure 2As shown, in order to block any axial movement of the sleeve 7 in the chamber 28, a shoulder 15 is provided on the outer wall 13 of the sleeve 7, close to the front face 23 of the sleeve 7 facing the blade member 4. This shoulder 15 causes a reduction in the diameter of the sleeve 7. At the same time, at least one leg or edge 19 is provided, which extends perpendicularly to the axis X from the inner surface of the chamber 28 of the housing 8. Therefore, the shoulder 15 of the sleeve 7 is suitable for moving against this leg or edge 19 during any axial movement of the sleeve 7 in the direction of the blade member 4. In addition, the sleeve 7 is axially blocked in the other direction because it is in contact with the base of the chamber 28 of the housing 8.

[0094] The sleeve 7 is thus completely fixed in position in the chamber 28 of the housing 8 both radially and axially.

[0095] A disadvantage of such a sleeve 7 according to the prior art is that dust and moisture can be introduced into the housing 16 in which the ball joint 11 is located, which thus prevents an optimal movement of the ball joint 11 in the housing 16 since impurities can be present in the lubricating oil.

[0096] In the same way, dust and moisture can be introduced inside the chamber 28 of the housing 8 , in particular between the axial projections 20 , and can thus contaminate the entire chamber 28 and the rear part of the sleeve 7 .

[0097] This dust and moisture leads to the need for regular maintenance operations in order to clean this entire area. Now, this is unacceptable to the vehicle owner.

[0098] The sleeve 7 according to the present invention solves the above-mentioned problems.

[0099] The sleeve 7 according to the present invention is in accordance with the first embodiment Figure 5 and according to the second embodiment Figure 6 and 7 Shown in.

[0100] like Figure 5 , 6 As shown in FIG. 7 , the sleeve 7 according to the present invention includes a front Figures 2 to 4 The sleeve 7 of the prior art has all the elements described except the axial protrusion 20 and the rear end 18 of the skirt 12 .

[0101] This is because the rear end 18 of the skirt 12 is no longer closed but open. Therefore, the housing 16 has a front opening 17 open at the front face 23 of the sleeve 7 and a rear opening 22 open in the inner space 14 of the sleeve 7.

[0102] In the sleeve 7 according to the present invention, improvements have been made in order to solve the above-mentioned problems.

[0103] The main problem is the sealing of the housing 16 in which the ball joint 11 is located. In order to solve this problem, the inner skirt 12 has sealing means for the housing 16 in the area of ​​the front opening 17. These sealing means comprise an annular sealing lip 25 which delimits this front opening 17 and which comes into contact with the shaft 10 when the shaft 10 is introduced into the housing 16. Thus, a seal is created between the lip 25 and the shaft 10 located in the ball joint 11, thereby preventing any dust and any moisture from entering the interior of the housing 16 through the front opening 17.

[0104] In an advantageous manner, in order to prevent the provision of a lip 25 that is too wide and too soft, a constriction 26 of the front end 29 of the skirt 12 is provided so as to reduce the diameter of the front opening 17 of the housing 16. The diameter of the front opening 17 is thus slightly greater than the diameter of the shaft 10, so that its dimensions are as similar as possible to the shaft 10. The annular lip 25 is arranged in the constriction 26, which allows providing a narrower, less flexible lip 25, which is more effective in ensuring sealing.

[0105] The lip 25 is in sealing contact with the shaft 10 .

[0106] However, on account of the reduced diameter of the front opening 17 , this constriction 26 does not allow the ball joint 11 to be introduced via the front side 23 of the sleeve 7 .

[0107] To this end, the rear end 18 of the skirt 12 has a rear opening 22 whose dimensions make it possible to receive, by elastic deformation, the ball joint 11. The ball joint 11 is thus introduced into the housing 16 along the axis X but in the opposite direction relative to the prior art. The ball joint 11 returns to the sleeve 7 via its back face 24, is introduced into the internal space 14 and then passes through the rear opening 22 of the skirt 12 to reach the housing 16.

[0108] This rear opening 22 thus corresponds to means for inserting the ball joint 11 via the rear side 24 of the sleeve 7 .

[0109] The rear opening 22 and the front opening 17 are coaxial along the axis X.

[0110] Once the ball joint 11 is inserted into the sleeve 7 and the shaft 10 is inserted into the ball joint 11 of the sleeve 7, the assembly is arranged on the lower shell 8a of the housing 8, and then the upper shell 8b of the housing 8 is nested on the lower shell 8a to close the housing 8.

[0111] With such a rear opening 22 of the housing 16 , it will be appreciated that dust and moisture that would pass between the outer shell 8 and the outer wall 13 of the sleeve 7 could then be introduced into the interior of the sleeve 7 via its rear face 24 and then into the interior of the housing 16 via the rear opening 22 .

[0112] In order to avoid this, the axial protrusion 20 protruding from the outer wall 13 of the sleeve 7 in the direction towards the housing 8 has been replaced by at least one radial protrusion 21 protruding from the outer surface of the outer wall 13 of the sleeve 7 in the direction towards the housing 8. This radial protrusion 21 thus extends all the way around the sleeve 7 and acts as a sealing joint, preventing any dust and any moisture from passing over this radial protrusion 21 and entering into the chamber 28. Preferably, this radial protrusion 21 is instead arranged at the front of the sleeve 7.

[0113] Preferably, in order to prevent and ensure a balanced positioning of the sleeve 7 in the chamber 28, the sleeve 7 is provided with a first radial protrusion 21, arranged near the front face 23 of the sleeve 7, just downstream of the shoulder 15, and a second radial protrusion 21, arranged near the back face 24 of the sleeve 7. Thus, there are two sealing barriers between the sleeve 7 and the housing 8.

[0114] As in the prior art, when the housing 8 is closed, the inner wall of the housing 8 moves against the radial projections 21 of the sleeve 7 so as to compress them and seal the chamber 28 .

[0115] In the case of a radial arrangement, there are no longer any gaps through which dust or moisture could be introduced into the chamber 28 .

[0116] exist Figure 5 In the embodiment shown in FIG. 1 , the inner skirt 12 is connected to the outer wall 13 by means of a collar 30 located on the front face 23 of the sleeve 7. This is a first possible configuration of the invention.

[0117] exist Figure 6 In the embodiment shown in Figure 1 , the inner skirt 12 is connected to the outer wall 13 by means of a collar 30 located in the center of the sleeve 7. This is a second possible configuration of the invention.

[0118] It should be understood that other configurations for connecting the skirt 12 to the outer wall 13 are possible and are within the scope of the present invention.

[0119] It should be noted that, according to the invention, the shape of the housing 8 having the chamber 28 for housing the sleeve 7 is similar to Figure 2 Same shape as described in .

[0120] The configurations shown in the cited figures are merely some possible and non-limiting examples of the invention, which, on the contrary, incorporate variations in form and design within the scope of a person skilled in the art.

Claims

1. A sleeve (7) for receiving a ball joint (11) for receiving a rotation axis (10) of a blade member (4) of a ventilation device (2), the sleeve (7) comprising: - a cylindrical outer wall (13) extending around the central axis X and defining an inner space (14); - an open back side (24); - a front side (23) for receiving the shaft (10); - an inner skirt (12) connected to the outer wall (13) and defining a housing (16) suitable for receiving the ball joint (11), the housing (16) being part-spherical and having a front opening (17) opening in the front face (23), the front opening (17) being suitable for receiving the shaft (10); It is characterized in that it comprises a sealing device for the housing (16) in the region of the front opening (17).

2. The sleeve (7) according to the preceding claim, characterized in that The sealing means of the housing (16) comprise an annular lip (25) extending from the skirt (12) and adapted to come into contact with the shaft (10).

3. A sleeve (7) according to any one of the preceding claims, characterized in that It comprises a sealing device having a protective housing (8) for a blade member (4).

4. The sleeve (7) according to the preceding claim, characterized in that The sealing device with the protective casing (8) comprises at least one radial protrusion (21) which extends from the outer surface of the outer wall (13) and extends all the way around the outer wall (13).

5. The sleeve (7) according to any one of the preceding claims, characterized in that It comprises means for inserting the ball joint (11) via its rear face (24).

6. The sleeve (7) according to the preceding claim, characterized in that The device for inserting the ball joint (11) comprises a rear opening (22) which is arranged in the housing (16) and opens into the interior space (14) and an open rear side (24).

7. The sleeve (7) according to the preceding claim, characterized in that The rear opening (22) is coaxial with respect to the front opening (17) according to the axis X.

8. A sleeve (7) according to any one of the preceding claims, characterised in that It is made in one piece from an elastomeric material.

9. An assembly comprising a sleeve (7) as claimed in any one of the preceding claims and a ball joint (11) which is movable in rotation within a housing (16), the ball joint (11) conforming to the internal shape of the housing (16).

10. A ventilation device (2) extending in an axial direction X and comprising: - a blade member (4) comprising a protective casing (8) for the blade (6), the protective casing (8) consisting of a lower half shell (8a) assembled with an upper half shell (8b); - an electric motor (3) comprising a rotor which rotates the bladed member (4) via a first shaft (5) having an axis X, the first shaft (5) extending from a first end of the bladed member (4); The blade member (4) comprises a second shaft (10) having an axis X, which extends from the second end of the blade member (4) and is installed in an assembly according to any one of claims 9 to 11, the ball joint (11) receiving the second rotating shaft (10) with the blade member (4) of the ventilation device (2), the shaft (10) being inserted into the sleeve (7) via its front side (23) and being installed in the ball joint (11) in a clamped state, the shaft (10) being in fluid-tight contact with a sealing device arranged on the front side (23) of the sleeve (7).

11. Ventilation device (2) according to the preceding claim, which is dependent on claim 4, characterized in that The housing (8) comprises a cylindrical receiving chamber (28) for the sleeve (7) surrounding the outer wall (13) of the sleeve (7), the at least one radial projection (21) being pressed against the housing (8) when the housing is closed.

12. The ventilation device (2) according to any one of claims 12 to 13, characterized in that It comprises axial blocking means for said sleeve (7) relative to the closing housing (8).

13. Ventilation device (2) according to the preceding claim, characterized in that The axial blocking device comprises: - a shoulder (15) formed on the outer wall (13) of the sleeve (7) in order to reduce the outer diameter of the sleeve (7) in the region of its front face (23); - at least one leg (19) extending from the inner surface of said casing (8) perpendicular to the axis X and adapted to move against the shoulder (15) in the event of any axial movement of the sleeve (7) towards said blade member (4).

14. A method for assembling a ventilation device (2) according to any one of claims 12 to 15, characterized in that The method comprises the following steps: - inserting the ball joint (11) into the housing (16) of the sleeve (7) via the back side (24) of the sleeve (7) and the rear opening (22) of the housing (16) in a first direction by axial translation in the direction of the axis X; - inserting the shaft (10) into the sleeve (7) via the front face (23) of the sleeve (7) and the front opening (17) of the housing (16), and then clamping the shaft (10) in the ball joint (11) by axial translation in the direction of the axis X in a second direction opposite to the first direction; - Closing the housing (8) by assembling the upper half-shell (8b) on the lower half-shell (8a) to compress the radial sealing protrusions (21) provided on the outer wall (13) of the sleeve (7).

15. A cooling module (1) for a motor vehicle, comprising a ventilation device (2) as claimed in any one of claims 12 to 15, and at least one heat exchanger located in the path of the air generated by the ventilation device (2).

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