Ventilation device comprising a holding device

Abstract

The invention relates to a ventilation device (100) comprising:-a blade member (1),-an electric motor (2), and-a torque-transmitting member (3) designed to transmit a torque generated by the electric motor (2) to the blade member (1), the torque-transmitting member (3) comprising:-a first portion (4) for transmitting the torque generated by the electric motor (2) from the torque-transmitting member (3) to the blade member (1), and-a second portion (5) for transmitting the torque generated by the electric motor (2) from the torque-transmitting member (3) to the blade member (1), the invention relates to a device for fastening a torque-transmitting part (3) to an electric motor (2), the arrangement of blade members (1) and torque-transmitting parts (3) forming a coupling (6), and the device is characterized in that it comprises retaining means (7) configured to retain within the coupling (6) components generated during the interaction of blade members (1) and torque-transmitting parts (3).

Description

Technical Field

[0001] The invention relates to a ventilation device, in particular for a cooling module, for example for a motor vehicle, in particular an electric vehicle. Background Art

[0002] In the prior art, in particular by publication FR3115503, it has been proposed to provide a ventilation device provided with a torque transmission component between a member having tangential blades on the one hand and an electric motor on the other hand. This component for transmitting torque from the engine to the blade component makes it possible to install the ventilation device in a cooling module, in particular in two main steps. The first step consists in assembling the torque transmission component to the electric motor by tightening, which is done before installation in the cooling module. This is followed by a second step, which involves mechanically matching the torque transmission component in the cooling module with the blade component. Due to the configuration of the torque transmission component, this last step has the advantage of being able to be carried out without screws and baffles. In order to ensure the correct operation of a ventilation device according to this design, the mechanical connection between the blade component and the torque transmission component is usually lubricated. However, when the ventilation device is in operation, lubricants, even highly viscous lubricating solutions, such as grease, are centrifuged and lead to contamination of the electric motor. Similarly, it has been found that in the absence of lubrication of the torque transmission component, contamination may also be caused by friction generated during the operation of the device. Wear of the components results in the shedding of material in the form of dust or fragments of varying sizes, which are carried into the electric motor by centrifugal forces, which deteriorate the operation of the electric motor. Summary of the invention

[0003] In order to make up for the shortcomings of the prior art, the present invention relates to a ventilation device, comprising:

[0004] Blade components,

[0005] Electric motors, and

[0006] A torque transmission component designed to transmit the torque generated by the electric motor to the blade member, the torque transmission component comprising:

[0007] o a first portion for transmitting the torque generated by the electric motor from the torque transmission component to the blade member, and

[0008] o A second part for fastening the torque transmission component to the electric motor,

[0009] The arrangement of the blade member and the torque transmission component forms a coupling and the device is characterized in that it comprises retaining means configured to retain components generated during the interaction of the blade member and the torque transmission component within the coupling.

[0010] Advantageously, the invention thus makes it possible to prevent any contamination of the electric motor due to the operation of the ventilation device, by throwing off the components resulting from the operation of the blade member on which the torque transmission means are arranged.

[0011] The coupling of the blade member to the torque transfer component defines a volume formed by the contact area and the mechanical clearance between the first portion and the blade member. It should also be understood that the volume of the coupling corresponds to the clearance space between the first portion and the blade member.

[0012] The coupling between the blade member and the torque transmitting component may be direct or indirect via one or more intermediate components.

[0013] For example, generated components are dust, debris generated by wear or leaking lubricant.The retaining means of the device are intended to retain these generated components within the volume defined by the coupling of the blade member to the torque transmission component.

[0014] According to an aspect of the invention, the blade member and / or the torque transmitting component comprises retaining means.

[0015] According to one aspect of the invention, the blade member and the torque transfer component rotate during operation about the axis of rotation, the retaining means being arranged completely around the axis of rotation. It will therefore be appreciated that the retaining means extends circularly around the axis of rotation.

[0016] According to one aspect of the invention, the torque transmission member comprises a peripheral wall designed to cooperate with the retaining means.

[0017] According to one aspect of the invention, the torque transmission component comprises a first face oriented toward the blade member and a second face oriented toward the electric motor, the peripheral wall extending outwardly from the first face.

[0018] According to one aspect of the invention, the peripheral wall extends perpendicularly relative to the first face of the torque transmitting member.

[0019] According to one aspect of the invention, the first portion comprises a recess designed to transfer torque to a recess counterpart of the blade member.

[0020] According to one aspect of the invention, the peripheral wall extends circularly relative to the rotation axis so as to surround the recess of the first portion.

[0021] According to one aspect of the invention, the retaining device is smaller than the blade member and the torque transmission component. This makes it possible to limit the overall size of the ventilation device.

[0022] According to an aspect of the invention, the blade member comprises retaining means.

[0023] According to one aspect of the invention, the retaining device is arranged on the recess counterpart of the blade element.

[0024] According to one aspect and according to a variant of the invention, the torque transmission component, preferably the first part, comprises retaining means.

[0025] According to one aspect of the invention, the retaining device comprises a skirt comprising a first part connected to the blade member and extending radially relative to the rotation axis, and a second part connected to the first part and extending parallel to the peripheral wall in the direction of the torque transmission part.

[0026] According to one aspect of the invention, the skirt and the peripheral wall are spaced apart so as to form a space between the second part of the skirt and the peripheral wall. It can therefore be understood that the skirt and the peripheral wall do not contact each other, and the space between them forms a gap.

[0027] According to one aspect of the invention, the space between the skirt and the peripheral wall is less than or equal to 2 mm.

[0028] According to one aspect of the invention, the retaining device is a sealing device configured to seal the first portion of the torque transmitting component.

[0029] According to one aspect of the invention, the sealing device comprises a sealing lip configured to cooperate with the peripheral wall.

[0030] According to one aspect of the invention, the sealing device comprises an annular seal configured to cooperate with the peripheral wall.

[0031] According to one aspect of the invention, the lip is in contact with the inner wall of the peripheral wall oriented towards the axis of rotation, thereby ensuring sealing of the first portion. It can therefore be understood that the lip is surrounded by the peripheral wall.

[0032] According to one aspect of the invention, the lip is in contact with the outer wall of the peripheral wall to ensure sealing of the first portion. It can therefore be understood that the lip surrounds the peripheral wall.

[0033] According to one aspect of the invention, the lip contacts the upper end of the peripheral wall to ensure sealing of the first portion.

[0034] According to one aspect of the invention, the sealing means is provided on the peripheral wall and cooperates with the recessed counterpart of the blade member.

[0035] According to one aspect of the invention, the sealing means extends from the inner wall of the peripheral wall.

[0036] According to one aspect of the invention, the sealing means extends from the outer wall of the peripheral wall.

[0037] According to one aspect of the invention, the retaining means is integrated with the recess counterpart of the blade member or with the torque transmission component.

[0038] According to one aspect of the invention, the retaining means is overmoulded with the recessed counterpart of the blade member or the torque transmission component.

[0039] According to one aspect of the invention, the retaining device is molded together with the recess counterpart of the blade member by bi-material molding, or is molded together with the torque transmission component.

[0040] According to one aspect of the invention, the retaining device is attached to the recess counterpart of the blade member or to the torque transmission component.

[0041] According to one aspect of the invention, the retaining device is fixed to the recess counterpart or to the torque transmission component by adhesive bonding.

[0042] According to one aspect of the invention, the retaining device is mounted in a circular recess which is located on the recess counterpart or on the peripheral wall of the torque transmission component.

[0043] According to one aspect of the invention, the recess counterpart of the blade member is the attached component.

[0044] According to one aspect of the invention, the recess counterpart is assembled to the blade member by fastening means (screws, rivets, clips, etc.).

[0045] According to one aspect of the invention, the blade member comprises a shaft configured to be received in a hub, the hub being inserted into a recess counterpart by overmolding.

[0046] According to one aspect of the invention, the second part is mechanically fastened by fastening means (screws, rivets, clips, etc.).

[0047] According to one aspect of the invention, the first portion is closer to the rotation axis than the second portion. It should be understood that the first portion is closer to the center of the torque transmitting component than the second portion surrounding the first portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Further features, details and advantages of the present invention will become more apparent from reading the following description with reference to the accompanying drawings, in which:

[0049] Figure 1 is a schematic cross-sectional view of a cooling module according to an example embodiment of the present invention;

[0050] Figure 2 is a schematic diagram of a ventilation device according to the prior art;

[0051] Figure 3 is a schematic diagram of a torque transmission component with a retaining device according to the present invention;

[0052] Figure 4is a schematic cross-sectional view of a torque transmission component with a retaining device according to a first embodiment of the present invention;

[0053] Figure 5 is a schematic cross-sectional view of a torque transmission component with a retaining device according to a second embodiment of the present invention;

[0054] Figure 6 is a schematic cross-sectional view of a torque transmission component with a retaining device according to an alternative solution of the second embodiment of the present invention;

[0055] Figure 7 is a schematic cross-sectional view of a torque transmission component with a retaining device according to another alternative of the second embodiment of the present invention.

[0056] Firstly, it should be noted that although the drawings disclose embodiments of the invention in detail, they can of course be used to further define the invention if applicable. It should also be noted that these drawings only show exemplary embodiments of the invention. DETAILED DESCRIPTION

[0057] Figure 1 An exemplary embodiment of the invention is described, in particular a cooling module 50 for a motor vehicle, in particular a motor vehicle having an electric motor. Figure 1 As shown in the cross-sectional view of FIG. 5 , the cooling module 50 has a housing or fairing 200 forming an internal channel 300. According to an exemplary embodiment of the invention, the housing 200 makes it possible to accommodate at least one heat exchanger 400 and a ventilation device 100. The ventilation device 100 has a blade member 1.

[0058] Figure 2 A ventilation device according to the prior art is shown. The ventilation device comprises:

[0059] Blade member 1,

[0060] an electric motor 2, and

[0061] A torque transmission component 3, which is designed to transmit the torque generated by the electric motor 2 to the blade member 1, the torque transmission component 3 comprises:

[0062] o a first portion 4 for transmitting the torque generated by the electric motor 2 from the torque transmission component 3 to the blade member 1, and

[0063] o A second portion 5 for fastening the torque transmission component 3 to the electric motor 2 .

[0064] According to the present invention, Figures 3 to 7As shown, the arrangement of the blade member 1 and the torque transmission component 3 forms a coupling 6 and the device 100 is characterized in that it comprises a retaining device 7 configured to retain components generated during the interaction of the blade member 1 and the torque transmission component 3 within the coupling 6 .

[0065] The blade member 1 and / or the torque transmission component 3 comprises a retaining device 7 .

[0066] The blade member 1 and the torque transfer component 3 rotate during operation about the rotation axis 8, and the retaining device 7 is arranged completely about the rotation axis 8. It can therefore be understood that the retaining device 7 extends circularly about the rotation axis 8.

[0067] The torque transmission component 3 comprises a peripheral wall 9 arranged to cooperate with the retaining means 7 .

[0068] The torque transmission component 3 comprises a first face 30 oriented towards the blade member 1 and a second face 31 oriented towards the electric motor 2 , from which the peripheral wall 9 extends outwards.

[0069] The peripheral wall 9 extends perpendicularly relative to the first face 30 of the torque transmission component 3 .

[0070] The first portion 4 comprises a recess 10 which is arranged to transfer torque to a recess counterpart 11 of the blade member 1 .

[0071] The peripheral wall 9 extends circularly relative to the axis of rotation 8 so as to surround the recess 10 of the first part 4 .

[0072] The holding device 7 is smaller than the blade member 1 and the torque transmission component 3. This makes it possible to limit the overall dimensions of the ventilation device 100.

[0073] like Figures 3 to 7 As shown, the blade member 1 comprises a retaining device 7 .

[0074] The holding device 7 is arranged on the recess counterpart 11 of the blade component 1 .

[0075] According to an alternative not shown in the figures, the torque transmission component 3 , preferably the first part 4 , comprises a retaining device 7 .

[0076] According to Figure 4 In the first embodiment of the invention shown, the retaining device 7 comprises a skirt 70 comprising a first part 700 connected to the blade member 1 and extending radially relative to the rotation axis 8, and a second part 701 connected to the first part 700 and extending parallel to the peripheral wall 9 in the direction of the torque transmission part 3.

[0077] The skirt 70 and the peripheral wall 9 are spaced apart so as to form a space 12 between the second part 701 of the skirt 70 and the peripheral wall 9. Therefore, it should be understood that the skirt 70 and the peripheral wall 9 do not contact each other and the space 12 therebetween forms a gap.

[0078] The space 12 between the skirt 70 and the peripheral wall 9 is less than or equal to 2 mm.

[0079] According to Figures 5 to 7 In the second embodiment of the invention shown, the retaining device 7 is a sealing device 7 which is configured to seal the first portion 4 of the torque transmission component 3 .

[0080] The sealing device 7 comprises a sealing lip 71 which is configured to cooperate with the peripheral wall 9 .

[0081] According to a variant (not shown in the figures), the sealing means 7 comprise an annular seal 72 configured to cooperate with the peripheral wall 9 .

[0082] In case the blade member 1 comprises a sealing device 7, three configurations are possible. According to a first configuration, Figure 5 As shown, the lip 71 is in contact with an inner wall 90 of the peripheral wall 9 oriented towards the axis of rotation 8 to ensure sealing of the first portion 4. It will therefore be understood that the lip 71 is surrounded by the peripheral wall 9.

[0083] According to the second configuration, Figure 6 As shown, the lip 71 is in contact with the outer wall 91 of the peripheral wall 9 to ensure sealing of the first portion 4. It will therefore be understood that the lip 71 surrounds the peripheral wall 9.

[0084] According to the third configuration, Figure 7 As shown, the lip 71 is in contact with the upper end 92 of the peripheral wall 9 to ensure the sealing of the first portion 4 .

[0085] In the case where the torque transmission component 3 includes a sealing device 7 (not shown), one possible configuration is that the sealing device 7 is arranged on the peripheral wall 9 and cooperates with the recessed counterpart 11 of the blade member 1. In this case, the sealing device 7 can extend from the inner wall 90 of the peripheral wall 9 or from the outer wall 91 of the peripheral wall 9.

[0086] According to the preferred design, Figures 3 to 7 As shown, the retaining device 7 is integrated with the recess counterpart 11 of the blade component 1 or with the torque transmission component 3 .

[0087] Other designs are possible according to:

[0088] The retaining device 7 is overmolded with the recess counterpart 11 of the blade component 1 or the torque transmission part 3 .

[0089] The retaining device 7 is molded together with the recess counterpart 11 of the blade member 1 or the torque transmission component 3 by bi-material molding.

[0090] The holding device 7 is attached to the recess counterpart 11 of the blade member 1 or to the torque transmission component 3 .

[0091] The holding device 7 is fixed to the recess counterpart 11 or the torque transmission component 3 by adhesive bonding.

[0092] The holding device 7 is mounted in a circular groove 13 which is located on the recess counterpart 11 or on the peripheral wall 9 of the torque transmission component 3 .

[0093] As shown, the recessed counterpart 11 of the blade member 1 is an attachment component. The blade member 1 comprises a shaft 14, which is not visible in the figure and is configured to be accommodated in a hub 15, which is inserted into the recessed counterpart 11 by overmolding. Alternatively, still in the case where the recessed counterpart 11 is a component attached to the blade member 1, the recessed counterpart 11 is assembled to the blade member 1 by fastening means (screws, rivets, clips, etc.). Although not shown in the figure, the recessed counterpart 11 can also be made integral with the blade member 1 by overmolding directly on the shaft 14 of the blade member 1.

[0094] The second part 5 is mechanically fastened to the electric motor 2 by fastening means (screws, rivets, clips, etc.).

[0095] The first portion 4 is closer to the rotation axis 8 than the second portion 5. It should be understood that the first portion 4 is closer to the center of the torque transmission component 3 than the second portion 5 surrounding the first portion 4.

Claims

1. A ventilation device (100), comprising: Blade member (1), an electric motor (2), and A torque transmission component (3) designed to transmit the torque generated by the electric motor (2) to the blade member (1), the torque transmission component (3) comprising: o a first portion (4) for transmitting the torque generated by the electric motor (2) from the torque transmission component (3) to the blade member (1), and o a second part (5) for fastening the torque transmission component (3) to the electric motor (2), The arrangement of the blade member (1) and the torque transmission component (3) forms a coupling (6), and the device (100) is characterized in that it includes a retaining device (7) configured to retain a component generated during the interaction between the blade member (1) and the torque transmission component (3) within the coupling (6).

2. A ventilation device (100) according to the preceding claim, wherein The blade member (1) and / or the torque transmission component (3) comprises the retaining device (7).

3. The ventilation device (100) according to any one of the preceding claims, wherein: The blade member (1) and the torque transmission component (3) rotate during operation about a rotation axis (8), and the retaining device (7) is arranged about the rotation axis (8).

4. A ventilation device (100) according to any one of the preceding claims, wherein: The torque transmission component (3) comprises a peripheral wall (9) arranged to cooperate with the retaining device (7).

5. The ventilation device (100) according to any one of the preceding claims, wherein: The first portion (4) comprises a recess (10) designed to transmit torque to a recess counterpart (11) of the blade member (1).

6. The ventilation device (100) according to any one of claims 2 to 5, wherein: The blade member (1) comprises the retaining device (7).

7. The ventilation device (100) according to any one of claims 2 to 5, wherein: The torque transmission component (3), preferably the first part (4), comprises the retaining device (7).

8. A ventilation device (100) according to any one of the preceding claims in combination with claim 4, wherein: The retaining device (7) comprises a skirt (70), which comprises a first part (700) connected to the blade member (1) and extending radially relative to the rotation axis (8), and a second part (701) connected to the first part (700) and extending parallel to the peripheral wall (9) in the direction of the torque transmission part (3).

9. The ventilation device (100) according to any one of claims 1 to 7, wherein: The retaining device (7) is a sealing device (7) configured to seal the first portion (4) of the torque transmission component (3).

10. A ventilation device (100) according to the preceding claim, wherein The sealing device (7) comprises a sealing lip (71) which is configured to cooperate with the peripheral wall (9).

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