WO2009083362A1 - Electric motor - Google Patents

Electric motor Download PDF

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Publication number
WO2009083362A1
WO2009083362A1 PCT/EP2008/066383 EP2008066383W WO2009083362A1 WO 2009083362 A1 WO2009083362 A1 WO 2009083362A1 EP 2008066383 W EP2008066383 W EP 2008066383W WO 2009083362 A1 WO2009083362 A1 WO 2009083362A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
bearing
electric motor
damping member
shaft
Prior art date
Application number
PCT/EP2008/066383
Other languages
French (fr)
Inventor
Aydin Bahadir
Original Assignee
Arcelik Anonim Sirketi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Publication of WO2009083362A1 publication Critical patent/WO2009083362A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/08—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations

Definitions

  • the present invention relates to an electric motor includes a stator and a rotor which are mounted between and supported by the endshields.
  • the electric motors used in household appliances such as a washing machine, having a stator and a rotor moving inside the stator.
  • the rotor shaft is supported by the bearings which are mounted to the motor endshields at the front and rear of the stator.
  • the aim of the present invention is the realization of an electric motor wherein the noise is attenuated by minimizing the rotor vibrations.
  • the electric motor comprises a stator and a rotor and motor endshields are disposed at the front and back of the stator, having bearing housings for bearing the rotor.
  • a damping member is disposed between the bearing housings and the bearings in the endshields, made of inflexible material, with the inner surface loosely fit to the bearing, having a conical outer surface that is inclined with respect to the rotor shaft axis.
  • the tangential force of friction between the conical outer surface of the damping member and the conical inner surface of the bearing housing maintains to minimize the vibrations of the rotor in the radial and axial directions.
  • the inner surfaces of the bearing housings in each endshield gets narrower in the direction of the rotor shaft axis, toward the ends of the axis and in the opposite direction with respect to the other endshield and the rotor is positioned in the axial direction with the damping members fitted on its ends.
  • an inner rim is provided on the damping members, leaning against on the bearings from the outside in the direction of the shaft axis and limiting the movement of the bearings in the axial direction on the inner surface of the damping members.
  • teeth are provided on the outer surface of the damping members.
  • the teeth make a frictional movement in the bearing housings in the grooves with configurations matching the teeth and thus capability of minimizing the rotor vibrations is enhanced by increasing the frictional surface.
  • the outer surface of the damping members is shaped spherically.
  • the outer surface of the damping members contact and rub against the spherical shaped inner surface of the bearing housings and maintain to reduce the rotor vibrations.
  • the spherical contact surfaces furthermore provide the rotor to function between the endshields together with the damping members at a virtually stationary position in the axial direction.
  • the outer surface of the damping members is configured to be cornered (pyramidal) and contact the cornered shaped inner surface of the bearing housings, preventing the damping members from making an unwanted turning movement in the bearing housings.
  • FIG. 1 - is the schematic view of an electric motor.
  • Figure 2 - is the exploded view of a bearing housing, a damping member, a bearing and a shaft.
  • Figure 3 - is the perspective view of a damping member.
  • Figure 4 - is the perspective view of a damping member having teeth on its outer surface.
  • Figure 5 - is the perspective view of a damping member with a spherical shaped outer surface.
  • Figure 6 - is the perspective view of a damping member with a cornered shaped outer surface.
  • the rotor (3) comprises a stator (2) formed of laminations (L) stacked on top of each other, a rotor (3) moving inside the stator (2) and a shaft (4) passing through the center of the rotor (3) and rotating together with the rotor (3), two bearings (5) interference-fitted on both ends of the shaft (4) for supporting the rotor (3) from both ends, two endshields (6) mounted on the front and back sides of the stator (2) stack, two bearing housings (7) disposed in the endshields (6) wherein the bearings (5) are seated, for bearing the rotor (3) from both ends and a load washer (8) disposed in the end-play gap between the bearing (5) and the bearing housing (7), that exerts a force on the bearing (5) in the direction of the shaft (4) axis (E) thereby holding the rotor (3) between the bearing housings (7) in a certain position in the axial direction.
  • the electric motor (1) of the present invention comprises
  • a damping member (9) made of rigid material such as hard plastic or metal, disposed between the bearing (5) and the bearing housing (7), the inner surface mounted loose-fittingly to the outer ring of the bearing (5) and having a conical outer surface (10) inclined with respect to the shaft (4) axis (E) with an angle ( ⁇ ), and
  • the rotor (3) is disposed in the bearing housings (7) in the endshields (6) by means of the bearings (5) interference-fitted to both ends of the shaft (4).
  • the bearing (5) does not contact the inner surface (11) of the bearing housing (7)
  • the vibration attenuating damping member (9) is situated between the bearing (5) and the bearing housing (7).
  • the outer ring of the bearing (5) contacts the damping member (9)
  • the conical outer surface (10) of the damping member (9) contacts the conical inner surface (11) of the bearing housing (7) and during the operation of the rotor (3) a friction force (Ff) is formed between the surfaces (10, 11).
  • the damping member (9) is configured to be rigid, not viscoelastic and the force of friction (Ff) between the conical outer surface (10) of the damping member (9) and the conical inner surface (11) of the bearing housing (7) maintains to reduce the rotor (3) vibrations.
  • the coefficient of friction of the material of the damping member (9) and the angle of inclination ( ⁇ ) of the surfaces (10, 11) can be changed depending on the vibration reducing necessity according to the working conditions of the electric motor (1).
  • the damping member (9) comprises a rim (12) for limiting the axial movement of the bearing (5) on the inner surfaces of the damping members (9) in the direction of the shaft (4) axis (E), and maintaining to hold the rotor (3) between the damping members (9) in the desired position in the axial direction.
  • the bearings (5) interference-fitted to the rotor (3) shaft (4) are allowed to move in the axial direction in the damping members (9) and this axial movement is limited by the rims (12), preventing the bearings (5) to move to the outside of the damping member (9).
  • the rotor (3) is allowed to make a relative movement in the damping members (9) together with the bearings (5) with respect to the damping members (9) and limited by the rims (12).
  • the damping members (9) make a frictional movement in the bearing housings (7) situated in the endshields (6) depending on the conical angle ( ⁇ ) of the surfaces (10, 11).
  • the electric motor (1) comprises one or more teeth (13) situated on the outer surface (10) of the damping member (9) and grooves disposed on the inner surface (11) of the bearing housing (7) wherein the teeth (13) fit in for making frictional movement (Figure 4).
  • the teeth (13) and the grooves increases the frictional area on the outer surface (10) of the damping member (9) and the inner surface (11 ) of the bearing housing (7), increasing the force of friction (Ff) and hence increasing the capability of the damping member (9) to reduce the vibrations.
  • the outer surface (10) of the damping member (9) is shaped spherically and the inner surfaces (11) of the bearing housings (7) are also shaped spherically ( Figure 5).
  • the spherical outer surfaces (10) of the damping members (9) and the spherical inner surfaces (11) of the bearing housings (7) maintain the rotor (3) to operate between the endshields (6) together with the damping members (9) at a virtually stationary position in the axial (E) direction.
  • the outer surface (10) of the damping member (9) is configured to be cornered (pyramidal) and the inner surfaces (11) of the bearing housings (7) are also shaped in the same cornered form ( Figure 6).
  • the damping member (9) is prevented from making an undesired turning movement in the bearing housing (7).
  • the electric motor (1) of the present invention is preferably used in washing machines for driving the drum wherein laundry is emplaced.
  • the vibrations of the rotor (3) are minimized effectively and the noise originating from the electric motor (1) is attenuated.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The present invention relates to an electric motor (1) that comprises a stator (2) formed of laminations (L) stacked on top of each other, a rotor (3), endshields (6) mounted on the front and back sides of the stator (2) for bearing the rotor (3) and wherein the vibrations of the rotor (3) in the radial and axial directions are reduced by means of a damping member (9) disposed between the bearing (5) and the bearing housing (7), the inner surface thereof mounted loose-fittingly to the outer ring of the bearing (5) and having an outer surface (10) inclined with an angle (α) with respect to the shaft (4) axis (E).

Description

Description
ELECTRIC MOTOR
[0001] The present invention relates to an electric motor includes a stator and a rotor which are mounted between and supported by the endshields.
[0002] The electric motors used in household appliances such as a washing machine, having a stator and a rotor moving inside the stator. The rotor shaft is supported by the bearings which are mounted to the motor endshields at the front and rear of the stator.
[0003] The mechanical vibration of the electric motors, for example a drum motor of the washing machine, rises at certain speed intervals when the speed accelerates in the spinning process and the undesired motor resonance occurs. In conventional art, viscoelastic damping members are placed between the rotor bearings and the stationary motor endshields for preventing high vibrations. Even though the viscoelastic damping members endeavor in reducing the motor noise to certain degree, the aging of the damping members due to high temperature and overloading, spoils the viscoelastic properties and the noise of the electric motor increases in time.
[0004] In the patent document no US5786647, an electric motor is explained wherein resilient damping members are used for minimizing vibrations and noise is damped.
[0005] In the electric motor explained in the patent document no FR2839396, the rotor is supported by ball bearings and a packing ring with an L shaped profile is placed between the ball bearing and the ball bearing housing.
[0006] The aim of the present invention is the realization of an electric motor wherein the noise is attenuated by minimizing the rotor vibrations.
[0007] The electric motor realized in order to attain the aim of the present invention is explicated in the attached claims.
[0008] The electric motor comprises a stator and a rotor and motor endshields are disposed at the front and back of the stator, having bearing housings for bearing the rotor.
[0009] In the electric motor of the present invention, a damping member is disposed between the bearing housings and the bearings in the endshields, made of inflexible material, with the inner surface loosely fit to the bearing, having a conical outer surface that is inclined with respect to the rotor shaft axis. The tangential force of friction between the conical outer surface of the damping member and the conical inner surface of the bearing housing maintains to minimize the vibrations of the rotor in the radial and axial directions.
[0010] In the electric motor, the inner surfaces of the bearing housings in each endshield gets narrower in the direction of the rotor shaft axis, toward the ends of the axis and in the opposite direction with respect to the other endshield and the rotor is positioned in the axial direction with the damping members fitted on its ends.
[0011] In an embodiment of the present invention, an inner rim is provided on the damping members, leaning against on the bearings from the outside in the direction of the shaft axis and limiting the movement of the bearings in the axial direction on the inner surface of the damping members.
[0012] In another embodiment of the present invention, teeth are provided on the outer surface of the damping members. The teeth make a frictional movement in the bearing housings in the grooves with configurations matching the teeth and thus capability of minimizing the rotor vibrations is enhanced by increasing the frictional surface.
[0013] In another embodiment of the present invention, the outer surface of the damping members is shaped spherically. The outer surface of the damping members contact and rub against the spherical shaped inner surface of the bearing housings and maintain to reduce the rotor vibrations. The spherical contact surfaces furthermore provide the rotor to function between the endshields together with the damping members at a virtually stationary position in the axial direction.
[0014] In yet another embodiment of the present invention, the outer surface of the damping members is configured to be cornered (pyramidal) and contact the cornered shaped inner surface of the bearing housings, preventing the damping members from making an unwanted turning movement in the bearing housings.
[0015] The electric motor realized in order to attain the aim of the present invention is illustrated in the attached figures, where: [0016] Figure 1 - is the schematic view of an electric motor. [0017] Figure 2 - is the exploded view of a bearing housing, a damping member, a bearing and a shaft.
[0018] Figure 3 - is the perspective view of a damping member. [0019] Figure 4 - is the perspective view of a damping member having teeth on its outer surface. [0020] Figure 5 - is the perspective view of a damping member with a spherical shaped outer surface. [0021] Figure 6 - is the perspective view of a damping member with a cornered shaped outer surface. [0022] The elements illustrated in the figures are numbered as follows:
1. Electric motor
2. Stator
3. Rotor
4. Shaft
5. Bearing
6. Endshield
7. Bearing housing
8. Load washer
9. Damping member
10. Outer surface
11. Inner surface
12. Rim
13. Teeth
[0023] The rotor (3) comprises a stator (2) formed of laminations (L) stacked on top of each other, a rotor (3) moving inside the stator (2) and a shaft (4) passing through the center of the rotor (3) and rotating together with the rotor (3), two bearings (5) interference-fitted on both ends of the shaft (4) for supporting the rotor (3) from both ends, two endshields (6) mounted on the front and back sides of the stator (2) stack, two bearing housings (7) disposed in the endshields (6) wherein the bearings (5) are seated, for bearing the rotor (3) from both ends and a load washer (8) disposed in the end-play gap between the bearing (5) and the bearing housing (7), that exerts a force on the bearing (5) in the direction of the shaft (4) axis (E) thereby holding the rotor (3) between the bearing housings (7) in a certain position in the axial direction. [0024] The electric motor (1) of the present invention comprises
- a damping member (9) made of rigid material such as hard plastic or metal, disposed between the bearing (5) and the bearing housing (7), the inner surface mounted loose-fittingly to the outer ring of the bearing (5) and having a conical outer surface (10) inclined with respect to the shaft (4) axis (E) with an angle (α), and
- bearing housings (7) with the same inclination angle (α) as the outer surface (10) and having a conical inner surface (11) contacting the outer surface (10), reducing the vibrations of the rotor (3) by the effect of the tangential force of friction (Ff) between the outer surface (10) and the inner surface (11), against the dynamic forces of the rotor (3) in the radial and axial directions (Figures 1 , 2).
[0025] The rotor (3) is disposed in the bearing housings (7) in the endshields (6) by means of the bearings (5) interference-fitted to both ends of the shaft (4). The bearing (5) does not contact the inner surface (11) of the bearing housing (7), the vibration attenuating damping member (9) is situated between the bearing (5) and the bearing housing (7). The outer ring of the bearing (5) contacts the damping member (9), whereas the conical outer surface (10) of the damping member (9) contacts the conical inner surface (11) of the bearing housing (7) and during the operation of the rotor (3) a friction force (Ff) is formed between the surfaces (10, 11). The damping member (9) is configured to be rigid, not viscoelastic and the force of friction (Ff) between the conical outer surface (10) of the damping member (9) and the conical inner surface (11) of the bearing housing (7) maintains to reduce the rotor (3) vibrations. The coefficient of friction of the material of the damping member (9) and the angle of inclination (α) of the surfaces (10, 11) can be changed depending on the vibration reducing necessity according to the working conditions of the electric motor (1).
[0026] The outer and inner surfaces (10, 11) of the damping member (9) and the bearing housings (7) disposed at each endshield (6) get narrower towards the ends of the shaft (4) in the direction of the shaft (4) axis (E) and in the opposite direction with respect to the outer and inner surfaces (10, 11) on the other endshield (6) and thus the rotor (3), together with the damping members (9) on both ends, can be supported between the endshields (6) axially in the desired position.
[0027] In an embodiment of the present invention, the damping member (9) comprises a rim (12) for limiting the axial movement of the bearing (5) on the inner surfaces of the damping members (9) in the direction of the shaft (4) axis (E), and maintaining to hold the rotor (3) between the damping members (9) in the desired position in the axial direction. The bearings (5) interference-fitted to the rotor (3) shaft (4) are allowed to move in the axial direction in the damping members (9) and this axial movement is limited by the rims (12), preventing the bearings (5) to move to the outside of the damping member (9).
[0028] The rotor (3) is allowed to make a relative movement in the damping members (9) together with the bearings (5) with respect to the damping members (9) and limited by the rims (12). The damping members (9) make a frictional movement in the bearing housings (7) situated in the endshields (6) depending on the conical angle (α) of the surfaces (10, 11).
[0029] In an embodiment of the present invention, the electric motor (1) comprises one or more teeth (13) situated on the outer surface (10) of the damping member (9) and grooves disposed on the inner surface (11) of the bearing housing (7) wherein the teeth (13) fit in for making frictional movement (Figure 4). The teeth (13) and the grooves increases the frictional area on the outer surface (10) of the damping member (9) and the inner surface (11 ) of the bearing housing (7), increasing the force of friction (Ff) and hence increasing the capability of the damping member (9) to reduce the vibrations.
[0030] In another embodiment of the present invention, the outer surface (10) of the damping member (9) is shaped spherically and the inner surfaces (11) of the bearing housings (7) are also shaped spherically (Figure 5). The spherical outer surfaces (10) of the damping members (9) and the spherical inner surfaces (11) of the bearing housings (7) maintain the rotor (3) to operate between the endshields (6) together with the damping members (9) at a virtually stationary position in the axial (E) direction.
[0031] In another embodiment of the present invention, the outer surface (10) of the damping member (9) is configured to be cornered (pyramidal) and the inner surfaces (11) of the bearing housings (7) are also shaped in the same cornered form (Figure 6). In this embodiment, the damping member (9) is prevented from making an undesired turning movement in the bearing housing (7).
[0032] The electric motor (1) of the present invention is preferably used in washing machines for driving the drum wherein laundry is emplaced. In the electric motor (1), the vibrations of the rotor (3) are minimized effectively and the noise originating from the electric motor (1) is attenuated.

Claims

Claims
1. An electric motor (1) comprising a stator (2) formed of laminations (L) stacked on top of each other, a rotor (3) moving inside the stator (2), a shaft (4) passing through the center of the rotor (3) and rotating together with the rotor (3), two bearings (5) interference-fitted on both ends of the shaft (4) for supporting the rotor (3) from both ends, two endshields (6) mounted on the front and back sides of the stator (2) stack, and two bearing housings (7) disposed in the endshields (6) wherein the bearings (5) are seated for bearing the rotor (3) from both ends and characterized by
- a damping member (9) made of rigid material, disposed between the bearing (5) and the bearing housing (7), the inner surface mounted loose-fittingly to the outer ring of the bearing (5) and having a conical outer surface (10) inclined with respect to the shaft (4) axis (E) with an angle (α), and
- bearing housings (7) with the same angle of inclination (α) as the outer surface (10) and having a conical inner surface (11) contacting the outer surface (10), reducing the vibrations of the rotor (3) by the effect of the tangential force of friction (Ff) between the outer surface (10) and the inner surface (11), against dynamic forces of the rotor (3) in the radial and axial directions.
2. An electric motor (1) as in Claim 1 , characterized by the damping member (9) and the bearing housings (7) having outer and inner surfaces (10, 11) disposed at each endshield (6) that get narrower towards the ends of the shaft (4) in the direction of the shaft (4) axis (E) and in the opposite direction with respect to the other endshield (6).
3. An electric motor (1) as in Claim 1 and 2, characterized by the damping member (9) comprising a rim (12) for limiting the axial movement of the bearing (5) on the inner surfaces of the damping members (9) in the direction of the shaft (4) axis (E).
4. An electric motor (1) as in any one of the above Claims, characterized by the damping member (9) comprising one or more teeth (13) situated on the outer surface (10) of the damping member (9) and grooves disposed on the inner surface (11 ) of the bearing housing (7) wherein the teeth (13) fit in for making frictional movement.
5. An electric motor (1) as in any one of the Claims 1 to 3, characterized by the damping member (9) having spherical shaped outer surface (10) and the bearing housing (7) having spherical shaped inner surface (11).
6. An electric motor (1) as in any one of the Claims 1 to 3, characterized by the damping member (9) having cornered shape outer surface (10) and the bearing housing (7) having cornered shape inner surface (11).
PCT/EP2008/066383 2007-12-28 2008-11-27 Electric motor WO2009083362A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TRA2007/09113 2007-12-28
TR200709113 2007-12-28

Publications (1)

Publication Number Publication Date
WO2009083362A1 true WO2009083362A1 (en) 2009-07-09

Family

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Application Number Title Priority Date Filing Date
PCT/EP2008/066383 WO2009083362A1 (en) 2007-12-28 2008-11-27 Electric motor

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011144410A1 (en) * 2010-05-21 2011-11-24 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Ball bearing arrangement for an armature shaft of an electric machine, and electric machine
US10400817B2 (en) 2016-11-22 2019-09-03 Woodward, Inc. Radial bearing device
CN111245149A (en) * 2018-11-29 2020-06-05 索恩格汽车部件（中国）有限公司 Motor damping ring and motor
WO2021032708A1 (en) * 2019-08-21 2021-02-25 Vitesco Technologies Germany Gmbh Electric machine for a motor vehicle
WO2021123547A1 (en) * 2019-12-19 2021-06-24 Valeo Systemes Thermiques Motor for a ventilation device of a heating, ventilation and/or air conditioning system of a motor vehicle with a rotor and stator decoupled from a mounting base

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276214A (en) * 1993-03-18 1994-09-21 Peter Harrison Bearing mounting

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276214A (en) * 1993-03-18 1994-09-21 Peter Harrison Bearing mounting

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011144410A1 (en) * 2010-05-21 2011-11-24 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Ball bearing arrangement for an armature shaft of an electric machine, and electric machine
US10400817B2 (en) 2016-11-22 2019-09-03 Woodward, Inc. Radial bearing device
CN111245149A (en) * 2018-11-29 2020-06-05 索恩格汽车部件（中国）有限公司 Motor damping ring and motor
WO2021032708A1 (en) * 2019-08-21 2021-02-25 Vitesco Technologies Germany Gmbh Electric machine for a motor vehicle
WO2021123547A1 (en) * 2019-12-19 2021-06-24 Valeo Systemes Thermiques Motor for a ventilation device of a heating, ventilation and/or air conditioning system of a motor vehicle with a rotor and stator decoupled from a mounting base
FR3105646A1 (en) * 2019-12-19 2021-06-25 Valeo Systemes Thermiques Motor for ventilation device of a heating, ventilation and / or air conditioning installation of a motor vehicle with rotor and stator decoupled from a mounting base

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