Device for hybrid vehicle with anti-dust flange between electric machine and reaction plate

Patent metadata

Field	Value
Publication number	US-9662966-B2
Application number	US-201314427337-A
Country	US
Kind code	B2
Filing date	Sep 20, 2013
Priority date	Sep 25, 2012
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A device for a motor vehicle transmission assembly, comprising:—an electric machine ( 3 ) comprising a rotor ( 9 ) able to rotate about an axis X and a stator ( 8 ), the rotor ( 9 ) being arranged inside the stator ( 8 ), separated from the stator ( 8 ) by an annular air gap space ( 300 ),—a clutch ( 2 ) coaxial with the electric machine comprising a reaction plate ( 10 ), the reaction plate ( 10 ) rotating as one with the rotor ( 9 ) and being positioned an axial distance from said rotor ( 9 ) in order to leave space between the electric machine ( 3 ) and the reaction plate ( 10 ), the assembly being fitted with a dust ring ( 301 ) positioned axially in the space between the electric machine ( 3 ) and the reaction plate ( 10 ) and extending radially far enough to cover the annular air gap space ( 300 ).

First claim

The invention claimed is:

1. A device for a transmission assembly of a motor vehicle, comprising:
an electrical machine ( 3 ) comprising a rotor ( 9 ) rotatable around an axis X and a stator ( 8 ), the rotor ( 9 ) being arranged in an interior of the stator ( 8 ) and separated from the stator ( 8 ) by an annular air gap space ( 300 );
a clutch ( 2 ) coaxial with the electrical machine, the clutch comprising a reaction plate ( 10 ), the reaction plate ( 10 ) being integral in rotation with the rotor ( 9 ) and placed at an axial distance from the rotor ( 9 ) in order to provide a space between the electrical machine ( 3 ) and the reaction plate ( 10 ); and
an anti-dust flange ( 301 ) arranged axially in the space between the electrical machine ( 3 ) and the reaction plate ( 10 ), and extending radially so as to cover the annular air gap space ( 300 );
a radial part of the anti-dust flange ( 301 ) forming a cheek ( 305 );
the anti-dust flange ( 301 ) comprising a first axial lip ( 302 , 303 ) extending axially from the cheek ( 305 ) in the direction to the reaction plate ( 10 ).

2. The device according to claim 1 , wherein the anti-dust flange ( 301 ) is secured on the stator ( 8 ).

3. The device according to claim 2 , wherein the anti-dust flange ( 301 ) comprises a conical deflector ( 304 ) on a radially outer periphery thereof, and wherein the conical deflector ( 304 ) widens radially outwardly in the direction to the clutch ( 2 ).

4. The device according to claim 1 , wherein the anti-dust flange ( 301 ) comprises a second axial lip ( 302 , 303 ) which extends from the cheek in the direction of the reaction plate ( 10 ).

5. The device according to claim 4 , wherein the first and second axial lips ( 302 , 303 ) are arranged radially on both sides of the annular air gap space ( 300 ).

6. The device according to claim 5 , wherein the axial distance between the electrical machine ( 3 ) and the reaction plate ( 10 ) is not constant, wherein a gap between the reaction plate ( 10 ) and the stator ( 8 ) has an axial dimension greater than the axial dimension of a gap between the reaction plate ( 10 ) and the rotor ( 9 ), wherein the first axial lip ( 302 ) is arranged between the reaction plate ( 10 ) and the rotor ( 9 ), and wherein the second axial lip ( 303 ) is arranged between the reaction plate ( 10 ) and the stator ( 8 ), and has an axial dimension greater than the gap between the reaction plate ( 10 ) and the rotor ( 9 ).

7. The device according to claim 4 , wherein the axial distance between the electrical machine ( 3 ) and the reaction plate ( 10 ) is not constant, with a gap between the reaction plate ( 10 ) and the stator ( 8 ) having an axial dimension greater than the axial dimension of a gap between the reaction plate ( 10 ) and the rotor ( 9 ), and wherein the first axial lip ( 302 ) is arranged between the reaction plate ( 10 ) and the rotor ( 9 ), and the second axial lip ( 303 ) is arranged between the reaction plate ( 10 ) and the stator ( 8 ), and has an axial dimension greater than the gap between the reaction plate ( 10 ) and the rotor ( 9 ).

8. The device according to claim 1 , wherein the flange ( 301 ) is non-magnetic.

9. The device according to claim 1 , wherein the anti-dust flange ( 301 ) is made of a material with magnetic susceptibility having a value of less than 1·10 −3 to magnetically shield the electrical machine ( 3 ).

10. The device according to claim 1 , wherein the anti-dust flange ( 301 ) is made of plastic material comprising non-magnetic metal fillers to magnetically shield the electrical machine ( 3 ).

11. The device according to claim 1 , wherein the anti-dust flange ( 301 ) comprises a conical deflector ( 304 ) on a radially outer periphery thereof, and wherein the conical deflector ( 304 ) widens radially outwardly in the direction to the clutch ( 2 ).

12. A device for a transmission assembly of a motor vehicle, comprising:
an electrical machine ( 3 ) comprising a rotor ( 9 ) rotatable around an axis X and a stator ( 8 ), the rotor ( 9 ) being arranged in an interior of the stator ( 8 ) and separated from the stator ( 8 ) by an annular air gap space ( 300 );
a clutch ( 2 ) coaxial with the electrical machine, the clutch comprising a reaction plate ( 10 ), the reaction plate ( 10 ) being integral in rotation with the rotor ( 9 ) and placed at an axial distance from the rotor ( 9 ) in order to provide a space between the electrical machine ( 3 ) and the reaction plate ( 10 ); and
an anti-dust flange ( 301 ) arranged axially in the space between the electrical machine ( 3 ) and the reaction plate ( 10 ), and extending radially so as to cover the annular air gap space ( 300 );
the anti-dust flange ( 301 ) comprising a conical deflector ( 304 ) on a radially outer periphery thereof, the conical deflector ( 304 ) widening radially outwardly in the direction of the clutch ( 2 ).

13. The device according to claim 12 , wherein the radial part of the anti-dust flange ( 301 ) forms a cheek ( 305 ), and wherein the anti-dust flange ( 301 ) comprises a lip ( 302 , 303 ) which extends axially from the cheek ( 305 ) in the direction to the reaction plate ( 10 ).

14. The device according to claim 12 , wherein the anti-dust flange ( 301 ) is secured on the stator ( 8 ).

15. The device according to claim 12 , wherein the anti-dust flange ( 301 ) is made of a material with magnetic susceptibility having a value of less than 1·10 −3 to magnetically shield the electrical machine ( 3 ).

16. The device according to claim 12 , wherein the anti-dust flange ( 301 ) is made of plastic material comprising non-magnetic metal fillers to magnetically shield the electrical machine ( 3 ).

17. A device for a transmission assembly of a motor vehicle, comprising:
an electrical machine ( 3 ) comprising a rotor ( 9 ) rotatable around an axis X and a stator ( 8 ), the rotor ( 9 ) being arranged in an interior of the stator ( 8 ) and separated from the stator ( 8 ) by an annular air gap space ( 300 );
a clutch ( 2 ) coaxial with the electrical machine, the clutch comprising a reaction plate ( 10 ), the reaction plate ( 10 ) being integral in rotation with the rotor ( 9 ) and placed at an axial distance from the rotor ( 9 ) in order to provide a space between the electrical machine ( 3 ) and the reaction plate ( 10 ); and
an anti-dust flange ( 301 ) arranged axially in the space between the electrical machine ( 3 ) and the reaction plate ( 10 ), and extending radially so as to cover the annular air gap space ( 300 );
the stator ( 8 ) comprising a plurality of assembly pins ( 306 ),
the anti-dust flange ( 301 ) comprising a plurality of holes ( 307 ) arranged at right angles to the pins ( 306 ) for permitting assembly by coupling of the pins ( 306 ) with the corresponding holes ( 307 ).

18. The device according to claim 17 , wherein each of the pins ( 306 ) passing through one of the holes ( 307 ) in the anti-dust flange ( 301 ) comprises a head ( 308 ) which retains the anti-dust flange ( 301 ) on the stator ( 8 ).

19. The device according to claim 17 , wherein the pins ( 306 ) are made of plastic which is fusible by ultrasound.

20. The device according to claim 17 , wherein the anti-dust flange ( 301 ) is secured on the stator ( 8 ).

21. The device according to claim 17 , wherein the anti-dust flange ( 301 ) is made of a material with magnetic susceptibility having a value of less than 1·10 −3 to magnetically shield the electrical machine ( 3 ).

22. The device according

Assignees

• Valeo Equip Electr Moteur

Inventors

• El Baraka Khadija
• Jugovic Svetislav

Classifications

• Y02T10/641

  Cross-Sectional Technologies · mapped topic

• B60L11/14

  Operations & Transport · mapped topic

• H02K2203/09

  Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations · CPC title

• B60Y2400/4242

  of dry type · CPC title

• Y10S903/914

  Actuated, e.g. engaged or disengaged by electrical, hydraulic or mechanical means · CPC title