WO2020161154A1 - Sealing device between a clutch basket and a rotating electrical machine - Google Patents

Sealing device between a clutch basket and a rotating electrical machine Download PDF

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Publication number
WO2020161154A1
WO2020161154A1 PCT/EP2020/052795 EP2020052795W WO2020161154A1 WO 2020161154 A1 WO2020161154 A1 WO 2020161154A1 EP 2020052795 W EP2020052795 W EP 2020052795W WO 2020161154 A1 WO2020161154 A1 WO 2020161154A1
Authority
WO
WIPO (PCT)
Prior art keywords
clutch housing
sealing device
peripheral wall
electrical connection
connection block
Prior art date
Application number
PCT/EP2020/052795
Other languages
French (fr)
Inventor
Pierre Tisserand
Patrycja SENDOR
Radoslaw Bukowski
Anil JASWAL
Original Assignee
Valeo Equipements Electriques Moteur
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 Valeo Equipements Electriques Moteur filed Critical Valeo Equipements Electriques Moteur
Publication of WO2020161154A1 publication Critical patent/WO2020161154A1/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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • 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
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • 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
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/26—Cover or bell housings; Details or arrangements thereof
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02034—Gearboxes combined or connected with electric machines
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/108—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction clutches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • the present invention relates to a system for a hybrid motor vehicle comprising a clutch housing and a rotating electric machine.
  • the invention relates to the field of vehicles equipped with a clutch making it possible to connect a rotating electrical machine to a heat engine.
  • This type of system comprises a rotating electric machine equipped with a stator and a rotor arranged around an axis of rotation, the stator allowing the rotor to be set in rotation by means of electric coils included in the stator.
  • the rotating electric machine also comprises a cooling device located on the outer periphery of the stator, at the level of the electric coils.
  • These coils are supplied by an electrical connection device disposed circumferentially above the stator.
  • the electrical connection device of the rotating electrical machine In order to supply the electrical connection device of the rotating electrical machine with electrical energy, the latter must be connected to a control and power device. This electrical connection is made by means of a connection block within the electrical connection device.
  • Such a system also comprises a structure called a clutch bell, arranged between a gearbox and an internal combustion engine, and which houses a clutch mechanism as well as the rotating electrical machine.
  • the clutch mechanism can be of the wet type, and in such a case, the clutch housing drains the oil used by the clutch mechanism.
  • This clutch housing has an opening for connecting the electrical connection device of the rotating electrical machine to the control and power device located outside the clutch housing. The oil is thus capable of circulating between an external wall of the cooling device and an internal wall of the clutch housing.
  • the technical problem arising from this system lies in the support of the sealing function at the level of the opening made in the clutch housing, while guaranteeing access to electrically connect the connection device of the rotating electrical machine. to the control and power device.
  • the present invention solves this sealing problem and this problem of electrical connection.
  • the invention consists of a system for a vehicle comprising a clutch housing having a peripheral wall delimiting an internal volume and comprising an opening passing through the peripheral wall of said clutch housing, the system comprising a rotating electrical machine housed in the internal volume of the clutch housing and comprising a stator, a rotor and an electrical connection device comprising at least one connection block arranged opposite and at a distance from the opening which passes through the peripheral wall of the clutch housing, characterized in that the system comprises a sealing device which extends between the peripheral wall of the clutch housing and the connection block of the electrical connection device.
  • this sealing device is to prevent any oil from the gearbox from escaping from the clutch housing, while still providing access to the connection block from outside the housing.
  • the oil must therefore neither exit through the opening in the peripheral wall of the clutch housing, nor enter the electrical circuits of the connection block of the electrical connection device.
  • the seal also provides a seal against external elements that could penetrate inside the clutch housing.
  • the sealing device forms an interface which connects an outer surface of the connection block of the electrical connection device to an edge of the peripheral wall which delimits the opening of the clutch housing.
  • the sealing device is inserted into the opening of the clutch housing of the system from the exterior thereof. When the sealing device is in place, it conforms perfectly to the edges of the opening of the clutch housing and encloses the electrical connections located at the connection block of the electrical connection device.
  • the sealing device comprises a first rigid portion which extends from the peripheral wall of the clutch housing to the connection block of the electrical connection device and a second flexible portion providing a seal between the first rigid portion and the peripheral wall of the clutch housing, more particularly the edge of the peripheral wall which delimits the opening of the clutch housing.
  • the first rigid portion is a part made of synthetic material for example, the dimensional variations of which due to temperature are compatible with the flexibility of the second portion. Its dimensions are such that it can be inserted into the opening of the clutch housing.
  • the second portion is made of flexible material, for example with shape memory, in order to allow the installation of the sealing device while providing a barrier that blocks the exit of the oil. The second portion is placed such that it seals between the first rigid portion of the sealing device and the peripheral wall of the clutch housing.
  • the sealing device can advantageously include a third flexible portion providing the seal between the first rigid portion and the connection block of the electrical connection device.
  • This third portion is made of flexible material, for example with shape memory.
  • the third portion by virtue of its property, allows the installation of the sealing device on the connection block while providing a barrier that blocks the exit of the oil.
  • the third portion is placed so that it seals between the first rigid portion and the connection block of the electrical connection device.
  • the first portion is rigid in that it forms a structural element of the sealing device.
  • the first rigid portion therefore carries the second portion and the third portion.
  • the gearbox oil can circulate in a zone along the first rigid portion of the sealing device and this oil is prevented in its displacement by the second portion and the third portion of the sealing device.
  • the sealing device is provided with a through hole configured to allow an electrical connection of the connection block of the electrical connection device.
  • a passage hole passes right through the first rigid portion, forming a channel which opens on one side to the outside of the clutch housing and on the other to the connection block of the switching device. electrical connection of the rotating electrical machine.
  • connection block of the electrical connection device of the rotary electrical machine is designed to be connected to a control and power device, external to the system.
  • the connection block is thus accessible from the outside of the clutch housing, hence the presence of the opening passing through the peripheral wall of the same clutch housing.
  • the sealing device is inserted into this opening. It must therefore include a through hole facing the opening of the peripheral wall of the clutch housing and the connection block of the electrical connection device to maintain accessibility of the connection block from outside the system.
  • the second flexible portion is placed against an outer face of the first rigid portion.
  • the first rigid portion is made of synthetic material, for example, and has a through hole. The presence of this through hole induces the fact that the first rigid portion comprises an interior face located opposite the through hole, and an exterior face located facing the exterior of the first rigid portion. Since the sealing device is inserted inside the opening of the peripheral wall of the clutch housing and the second portion seals between the first rigid portion and the peripheral wall of the housing clutch, the second portion must therefore be disposed on the outer face of the first rigid portion to perform its function.
  • the third flexible portion is disposed against an interior face of the first rigid portion.
  • the end of the first rigid portion which is inserted inside the system conforms to at least one exterior surface of the block connection of the electrical connection device.
  • the function of the third portion is to ensure the seal between the first rigid portion and the connection block.
  • the third portion must therefore be arranged on the inner face of the first rigid portion to perform its function.
  • the second portion and / or the third portion each consist of at least one seal, for example an O-ring.
  • An O-ring is a flexible annular part, usually made of rubber. This is the only component in the second and third portions. Its flexibility allows the sealing device to be fitted while maintaining a tight barrier. The presence of these seals, preferably O-rings, prevents the risk of oil escaping from the system.
  • the sealing device is curved around an axis of rotation of the rotor.
  • the sealing device has a radius of curvature corresponding to the radius of a circle whose center is the axis of rotation of the rotor.
  • the curved shape of the sealing device is thus an arc of a circle which extends over an angular sector of between 5 and 15 0 , for example.
  • the radius of curvature of the sealing device depends on the shape of the clutch housing.
  • the sealing device can also be flat.
  • a radius of curvature of the seal around the axis of rotation of the rotor coincides with a radius of curvature of the peripheral wall of the clutch housing.
  • the curved shape of the first rigid portion of the sealing device conforms to the circular shape of the clutch housing as the two elements are centered around the axis of rotation of the rotor.
  • the first rigid portion comprises a shoulder which bears against the peripheral wall of the clutch housing.
  • the sealing device has the shoulder on either side of a part of the first rigid portion which remains outside the clutch housing and abuts against the peripheral wall thereof once the device sealing in place. This allows better maintenance of the sealing device and guarantees its effectiveness over time.
  • the electrical connection device comprises a distribution part of the stator which comprises an annular groove arranged around the connection block in which the sealing device is housed.
  • the connection block of the electrical connection device is rectangular, and forms a projection which emerges from the distribution part of the electrical connection device. There is therefore around this projection, facing the opening of the peripheral wall of the clutch housing, an annular groove in which the first rigid portion of the sealing device will be housed.
  • the sealing device includes fastening means for securing it to the clutch housing.
  • Fastening means are present, for example, on each corner of the sealing device, at the level of the part disposed outside the clutch housing, thus making it possible to fix the sealing device against the peripheral wall of the clutch housing.
  • the invention also presents the method of mounting such a system, which consists in inserting the rotating electrical machine into the internal volume of the clutch housing so that the connection block of the electrical connection device is opposite opening the clutch housing, then insert the seal from the outside of the housing.
  • the assembly of the sealing device is carried out once the rotating electrical machine has been inserted into the internal volume of the clutch housing. Once the sealing device is in place, it can be attached to the peripheral wall of the clutch housing via the fastening means.
  • FIG. î is a general view of the system comprising the rotating electrical machine and the clutch housing;
  • FIG. 2 is a front view of the sealing device
  • FIG. 3 is a rear view of the sealing device
  • FIG. 4 is a cross-sectional view of the placement of the sealing device within the system
  • FIG. 5 is a sectional diagram in longitudinal view of the sealing device
  • FIG. 6 is a front view of the system after the installation of the sealing device, ie after the assembly process has been completed.
  • Figure 1 shows a general view of the system including the rotating electrical machine and the clutch housing and illustrates a first step of the system assembly process.
  • the lower part of the figure represents a rotating electrical machine 4 which comprises a stator 5 and a rotor 28 movable in rotation about an axis of rotation 6.
  • the stator 5 when it is supplied with energy, drives the rotation of the rotor. 28 and participates in the operation of the rotating electrical machine 4.
  • the energy supplying the stator 5 is transmitted by an electrical connection device 7 disposed circumferentially around the stator 5. This arrangement allows a supply of electrical energy over any the circumference of the stator 5.
  • the electrical connection device 7 has two parts.
  • a distribution part 8 of the stator 5 corresponds to the circular part of the electrical connection device 7.
  • This distribution part 8 is provided with electrically conductive tracks, as shown in FIG. 4, extended along the circular part of the device. electrical connection 7 in order to supply all the coils of the stator 5 over its entire circumference.
  • Another part of the electrical connection device 7 is a connection block 9.
  • This connection block 9 is in a rectangular shape at a viewing angle taken along a radial direction of the rotor 28, and extends towards the end. 'exterior of the distribution portion 8 of the electrical connection device 7.
  • the connection block 9 is delimited by at least one outer surface 31.
  • the connection block 9 allows the connection of the electrical connection device 7 to a control device and power, such as an inverter, external to the rotating electrical machine 4.
  • a cooling device 19 of the rotating electrical machine 4 is present around the stator 5. It surrounds the stator 5 such that the outer diameter of stator 5 is equal to or slightly greater than the inner diameter of cooling device 19. Cooling device 19 comprises a pocket over its entire circumference in which circulates glycol water, for example.
  • a fixing base 21 provided with holes distributed evenly over its entire circumference. This fixing base 21 allows fixing of the rotary electrical machine 4.
  • FIG. 1 shows a circularly shaped clutch housing 2, a peripheral wall 30 of which defines an internal volume 33.
  • the clutch housing 2 is made of metal, preferably aluminum.
  • the clutch housing 2 has a slightly conical shape, so that the rotating electrical machine 4 conforms to the shapes of the clutch housing 2 when it is inserted into the internal volume 33 of the clutch housing 2.
  • a circular orifice 22 is located on a bottom wall 34 of the clutch housing 2.
  • the circular orifice 22 is centered on the axis of rotation 6 and is intended for the housing.
  • a primary shaft of the gearbox which is driven by the rotation of the rotor 28 when the stator 5 is electrically supplied.
  • the clutch housing 2 comprises a mounting base 20 provided with holes which allow the attachment of the clutch housing 2.
  • the clutch housing 2 also includes an opening 3 passing through a peripheral wall 30. This opening 3 is rectangular in shape.
  • Figure 1 also illustrates the first step of the system assembly process. This step consists in inserting the rotating electrical machine 4 within the internal volume 33 of the clutch housing 2, along a direction parallel to the axis of rotation 6. The positioning of the rotating electrical machine 4 in the internal volume 33 of the clutch housing 2 is made so that the connection block 9 of the electrical connection device 7 of the rotating electrical machine 4 is facing the opening
  • the holes in the mounting base 21 of the rotating electric machine 4 and the holes in the fixing base 20 of the Clutch housing 2 can also be opposite each other when a fastening means connects the clutch housing 2 to a component such as an internal combustion engine. The first step of the assembly process is then completed.
  • the sealing device Io is shown seen from the outside of the clutch housing 2 in Figure 2 and seen from the back in Figure 3.
  • the sealing device 10 comprises at least three portions: a first rigid portion 11 , a second flexible portion 12 and a third flexible portion 13.
  • the first portion 11 is a piece of synthetic material, created by molding, for example, and has a one-piece structure. Alternatively, such a first portion 11 can be metallic or other rigid materials.
  • the first portion 11 is provided with a passage hole 14, which makes it possible to maintain accessibility to the connection block of the electrical connection device from the outside of the clutch housing when the sealing device 10 is in place.
  • the presence of the passage hole 14 induces the fact that the sealing device comprises two faces: an outer face 35 facing the outside of the sealing device 10, and an inner face 36 facing the interior of the device. sealing 10.
  • the first portion 11 comprises at least a first sub-portion 24 and at least a second sub-portion 25.
  • the first sub-portion 24 forms a rim higher and wider than the second sub-portion 25.
  • the first sub-portion 24 is in the form of a curved rectangle whose thickness is constant.
  • An exemplary embodiment of the first sub-portion 24 is shown under the form of a shoulder 16 which abuts against the peripheral wall of the clutch housing.
  • the sub-portion 24 is curved around the axis of rotation. Fixing means 18 are present at each corner of the sub-portion 24, at the level of the shoulder 16, and allow fixing of the sealing device 10.
  • these fixing means 18 are holes of radial axes which pass through the shoulder 16.
  • the second sub-portion 25 has a smaller perimeter than the first sub-portion 24. This is the sub-portion which is inserted into the opening of the peripheral wall of the clutch housing.
  • the rear face of this sub-portion 25 is for example rectangular, which allows it to enclose the connection block of the electrical connection device which is also rectangular in the design described.
  • the inner perimeter of the second sub-portion 25 is substantially greater than the outer perimeter of the connection block of the electrical connection device, while the outer perimeter of the second sub-portion 25 is substantially less than the inner perimeter of the opening of the peripheral wall of the clutch housing.
  • the junction between the first sub-portion 24 and the second sub-portion 25 has a curvature.
  • the second portion 12 of the sealing device 10 is located on the outer face 35 of the first portion 11. It consists of one or more seals, for example one or more O-rings in the design described.
  • the flexible material of this second portion 12 allows the installation of the sealing device 10 while ensuring the sealing.
  • the third portion 13 like the second portion 12, has one or more seals, for example one or more O-rings.
  • the third portion 13 is located on the inner face 36 of the first portion 11, at the level of the second sub-portion 25, and also prevents the rise of oil between the first portion 11 and the connection block.
  • Figure 4 illustrates a cross-sectional top view showing the sealing device 10 inserted into the opening of the clutch housing 2.
  • Figure 4 also illustrates a second step of the system assembly process.
  • the second step of the assembly process consists in inserting a sealing device 10 through the opening passing through the peripheral wall 30 of the clutch housing 2 up to the connection block 9 of the electrical connection device 7 of the machine. rotating electric.
  • the distribution part 8 of the electrical connection device 7 comprises the electrically conductive tracks 26 which go around the stator 5, as shown in Figure 1, and allow its power supply.
  • One end 29 of each of the tracks 26 is housed in the connection block 9, slightly offset radially with respect to the distribution part 8 of the electrical connection device 7.
  • connection block 9 is delimited by the outer surface 31.
  • An annular groove 17 goes around the outer surface 31 of the connection block 9 of the electrical connection device 7. This annular groove 17 allows the reception of the first portion 11 of the sealing device 10 when the latter is in place.
  • a water pocket of the cooling device 19 extends radially beyond the distribution part 8 of the electrical connection device 7.
  • the peripheral wall 30 of the clutch housing 2 is also visible in FIG. 4.
  • a space vacuum 27 remains between an external wall 37 of the cooling device 19 and an internal wall 38 of the clutch housing 2 when the rotating electrical machine is inserted into the clutch housing 2. It is in this space 27 that the lubricating oil of a clutch module arranged in the clutch housing 2. Without the presence of the sealing device 10, the oil present in the space 27 can therefore either come out of the clutch housing 2 through the opening of the peripheral wall 30, or infiltrate the connection block 9 of the electrical connection device 7.
  • the sealing device 10 is shown in Figure 4.
  • the first portion 11 is inserted into the opening of the peripheral wall 30 of the bell clutch 2 while the second portion 12 and the third portion 13 provide sealing.
  • the second portion 12 provides the seal between an edge 32 of the opening of the peripheral wall 30 of the clutch housing 2 and the outer face 35 of the sealing device 10.
  • the third portion 13 provides the seal between the outer surface 31 of the connection block 9 of the electrical connection device 7 and the inner face 36 of the sealing device 10.
  • the shoulder 16 abuts on the peripheral wall 30 of the clutch housing 2.
  • the curved shape of the first sub-portion of the first portion 11 coincides with the radius of curvature of the wall peripheral 30 of the clutch housing 2 and therefore advantageously matches its shape.
  • FIG. 5 represents a view in longitudinal section showing the position of the sealing device 10 when the latter is placed in the opening of the clutch housing 2.
  • the ends 29 of the tracks are present within of the connection block 9.
  • the first portion 11 is housed in the annular groove 17 located around the connection block 9 of the electrical connection device.
  • the shoulder 16 abuts on the peripheral wall 30 of the clutch housing 2.
  • the second portion 12 by virtue of its flexibility, is interposed between the outer face 35 of the sealing device 10 and the edge 32 of the opening. of the peripheral wall 30 of the clutch housing 2, and this over an entire perimeter of the edge 32 of the opening.
  • the third portion 13 is interposed between the inner face 36 of the sealing device 10 and the outer surface 31 of the connection block 9 of the electrical connection device 7.
  • the oil from the clutch module can be sprayed into the space 27 between the outer wall 37 of the cooling device 19 and the clutch housing 2. If the oil seeps between the first portion 11 of the device. seal 10 and the clutch housing 2, it is then blocked by the O-ring which forms an exemplary embodiment of the second portion 12. The oil cannot therefore leak outside of the clutch housing 2.
  • the oil can also infiltrate through a passage between the first portion 11 of the sealing device 10 and the connection block 9 of the electrical connection device while attempting to pass through the annular groove 17, but this time it is blocked by the O-ring which forms an exemplary embodiment of the third portion 13.
  • the oil therefore cannot infiltrate into the connection block 9 of the electrical connection device.
  • the sealing device 10 is in place, the oil is retained in space 27 by the combination of the first portion 11, the second portion 12 and the third portion 13.
  • the through hole 14 is located opposite the opening of the peripheral wall 30 of the clutch housing 2 and of the connection block 9 of the electrical connection device.
  • FIG. 6 shows a side view of the system 1, facing the opening of the peripheral wall 30 of the bell d. clutch 2.
  • the rotating electrical machine is included in the internal volume of the clutch housing 2 and is therefore not visible in FIG. 6. Only the connection block 9 of the electrical connection device is visible through the device. sealing 10.
  • the connection block 9 comprises the ends 29 of the electrically conductive tracks.
  • a “signal” connector 23 is also included in the connection block 9 in order to allow connection to the control and power device external to the system 1. It is through this “signal” connector 23 that the information of control, signal and / or diagnostic pass between the rotating electrical machine and the control and power device.
  • connection block 9 of the electrical connection device is therefore accessible for external electrical connection despite the fact that the rotary electrical machine is included in the internal volume of the clutch housing 2.
  • This accessibility is possible thanks to the opening of the peripheral wall 30 of the clutch housing 2 as well as through the passage hole of the sealing device 10.
  • the sealing device 10 is fixed to the peripheral wall 30 of the clutch housing 2 by means of the fixing means 18 present on the shoulder 16 of the first portion of the sealing device Io.
  • the system i according to the invention can also include a clutch module installed inside the rotor of the rotating electrical machine, and the system is particularly suitable for use in a hybrid traction chain for a motor vehicle.
  • This hybrid powertrain comprises an internal combustion engine coupled to the rotating electric machine according to the invention by the clutch module.
  • the rotating electrical machine can provide the propulsion of the motor vehicle, alone or in combination with the internal combustion engine. It also starts the internal combustion engine and assists it when accelerating the vehicle.
  • the rotating electrical machine can also perform the function of an alternator or a vehicle brake. Electrical energy can also be recovered during braking of the vehicle by the rotating electrical machine i according to the invention.

Abstract

Gearbox system comprising a clutch basket (2) having an opening passing through the peripheral wall (30) thereof, the system comprising a rotating electrical machine housed in the inner space of the clutch basket (2) and comprising an electrical connection device that comprises a connecting unit (9) arranged opposite and at a distance from the opening that passes through the peripheral wall (30) of the clutch basket (2), characterised in that the system comprises a sealing device (10) that extends between the peripheral wall (30) of the clutch basket (2) and the connecting unit (9) of the electrical connection device. The sealing device comprises three portions (11, 12, 13), two of which (12, 13) are formed by at least one seal. The invention also relates to the method for assembling such a system.

Description

Description Description
Titre : DISPOSITIF D'ETANCHEITE ENTRE UNE CLOCHE D'EMBRAYAGE ET UNE Title: SEALING DEVICE BETWEEN A CLUTCH BELL AND A
MACHINE ELECTRIQUE TOURNANTE ROTATING ELECTRIC MACHINE
La présente invention concerne un système pour véhicule automobile hybride comprenant une cloche d’embrayage et une machine électrique tournante. The present invention relates to a system for a hybrid motor vehicle comprising a clutch housing and a rotating electric machine.
L’invention se rapporte au domaine des véhicules équipés d’un embrayage permettant de relier une machine électrique tournante à un moteur thermique. The invention relates to the field of vehicles equipped with a clutch making it possible to connect a rotating electrical machine to a heat engine.
Ce type de système comprend une machine électrique tournante équipée d’un stator et un rotor agencés autour d’un axe de rotation, le stator permettant la mise en rotation du rotor par l’intermédiaire de bobines électriques comprises dans le stator. Afin d’éviter une surchauffe des bobines électriques, la machine électrique tournante comprend également un dispositif de refroidissement situé en périphérie extérieure du stator, au niveau des bobines électriques. Ces bobines sont alimentées par un dispositif de connexion électrique disposé circonférentiellement au-dessus du stator. Afin d’alimenter le dispositif de connexion électrique de la machine électrique tournante en énergie électrique, celle-ci doit être reliée à un dispositif de commande et de puissance. Cette liaison électrique s’effectue par le biais d’un bloc de raccordement au sein du dispositif de connexion électrique. Un tel système comprend également une structure appelée cloche d’embrayage, disposée entre une boîte de vitesses et un moteur à combustion interne, et qui loge un mécanisme d’embrayage ainsi que la machine électrique tournante. Le mécanisme d’embrayage peut être de type humide, et dans un tel cas, la cloche d’embrayage draine l’huile utilisée par le mécanisme d’embrayage. Cette cloche d’embrayage présente une ouverture pour raccorder le dispositif de connexion électrique de la machine électrique tournante au dispositif de commande et de puissance situé à l’extérieur de la cloche d’embrayage. L’huile est ainsi susceptible de circuler entre une paroi externe du dispositif de refroidissement et une paroi interne de la cloche d’embrayage. Le problème technique découlant de ce système réside dans la prise en charge de la fonction d’étanchéité au niveau de l’ouverture réalisée dans la cloche d’embrayage, tout en garantissant un accès pour raccorder électriquement le dispositif de connexion de la machine électrique tournante au dispositif de commande et de puissance. This type of system comprises a rotating electric machine equipped with a stator and a rotor arranged around an axis of rotation, the stator allowing the rotor to be set in rotation by means of electric coils included in the stator. In order to avoid overheating of the electric coils, the rotating electric machine also comprises a cooling device located on the outer periphery of the stator, at the level of the electric coils. These coils are supplied by an electrical connection device disposed circumferentially above the stator. In order to supply the electrical connection device of the rotating electrical machine with electrical energy, the latter must be connected to a control and power device. This electrical connection is made by means of a connection block within the electrical connection device. Such a system also comprises a structure called a clutch bell, arranged between a gearbox and an internal combustion engine, and which houses a clutch mechanism as well as the rotating electrical machine. The clutch mechanism can be of the wet type, and in such a case, the clutch housing drains the oil used by the clutch mechanism. This clutch housing has an opening for connecting the electrical connection device of the rotating electrical machine to the control and power device located outside the clutch housing. The oil is thus capable of circulating between an external wall of the cooling device and an internal wall of the clutch housing. The technical problem arising from this system lies in the support of the sealing function at the level of the opening made in the clutch housing, while guaranteeing access to electrically connect the connection device of the rotating electrical machine. to the control and power device.
La présente invention permet de résoudre ce problème d’étanchéité et ce problème de connexion électrique. The present invention solves this sealing problem and this problem of electrical connection.
L’invention consiste en un système pour véhicule comprenant une cloche d’embrayage ayant une paroi périphérique délimitant un volume interne et comprenant une ouverture traversant la paroi périphérique de ladite cloche d’embrayage, le système comprenant une machine électrique tournante logée dans le volume interne de la cloche d’embrayage et comprenant un stator, un rotor et un dispositif de connexion électrique comprenant au moins un bloc de raccordement disposé en regard et à distance de l’ouverture qui traverse la paroi périphérique de la cloche d’embrayage, caractérisé en ce que le système comprend un dispositif d’étanchéité qui s’étend entre la paroi périphérique de la cloche d’embrayage et le bloc de raccordement du dispositif de connexion électrique. The invention consists of a system for a vehicle comprising a clutch housing having a peripheral wall delimiting an internal volume and comprising an opening passing through the peripheral wall of said clutch housing, the system comprising a rotating electrical machine housed in the internal volume of the clutch housing and comprising a stator, a rotor and an electrical connection device comprising at least one connection block arranged opposite and at a distance from the opening which passes through the peripheral wall of the clutch housing, characterized in that the system comprises a sealing device which extends between the peripheral wall of the clutch housing and the connection block of the electrical connection device.
La fonction de ce dispositif d’étanchéité est d’empêcher toute sortie de l’huile de la boite de vitesses hors de la cloche d’embrayage, tout en donnant un accès au bloc de raccordement depuis l’extérieur de celle-ci. L’huile ne doit donc ni sortir par l’ouverture de la paroi périphérique de la cloche d’embrayage, ni entrer dans les circuits électriques du bloc de raccordement du dispositif de connexion électrique. Le dispositif d’étanchéité assure aussi l’étanchéité vis-à-vis des éléments extérieurs qui pourraient pénétrer à l’intérieur de la cloche d’embrayage. The function of this sealing device is to prevent any oil from the gearbox from escaping from the clutch housing, while still providing access to the connection block from outside the housing. The oil must therefore neither exit through the opening in the peripheral wall of the clutch housing, nor enter the electrical circuits of the connection block of the electrical connection device. The seal also provides a seal against external elements that could penetrate inside the clutch housing.
Le dispositif d’étanchéité forme une interface qui relie une surface extérieure du bloc de raccordement du dispositif de connexion électrique à un bord de la paroi périphérique qui délimite l’ouverture de la cloche d’embrayage. Le dispositif d’étanchéité est inséré dans l’ouverture de la cloche d’embrayage du système, depuis l’extérieur de celle-ci. Lorsque le dispositif d’étanchéité est mis en place, il épouse parfaitement les bords de l’ouverture de la cloche d’embrayage et enclave les branchements électriques situés au niveau du bloc de raccordement du dispositif de connexion électrique. The sealing device forms an interface which connects an outer surface of the connection block of the electrical connection device to an edge of the peripheral wall which delimits the opening of the clutch housing. The sealing device is inserted into the opening of the clutch housing of the system from the exterior thereof. When the sealing device is in place, it conforms perfectly to the edges of the opening of the clutch housing and encloses the electrical connections located at the connection block of the electrical connection device.
Le dispositif d’étanchéité comprend une première portion rigide qui s’étend de la paroi périphérique de la cloche d’embrayage au bloc de raccordement du dispositif de connexion électrique et une deuxième portion souple assurant une étanchéité entre la première portion rigide et la paroi périphérique de la cloche d’embrayage, plus particulièrement le bord de la paroi périphérique qui délimite l’ouverture de la cloche d’embrayage. The sealing device comprises a first rigid portion which extends from the peripheral wall of the clutch housing to the connection block of the electrical connection device and a second flexible portion providing a seal between the first rigid portion and the peripheral wall of the clutch housing, more particularly the edge of the peripheral wall which delimits the opening of the clutch housing.
La première portion rigide est une pièce réalisée en matière synthétique par exemple, dont les variations de dimensions dues à la température sont compatibles avec la souplesse de la deuxième portion. Ses dimensions sont telles qu’elle peut être insérée dans l’ouverture de la cloche d’embrayage. La deuxième portion est réalisée en matière souple, à mémoire de forme par exemple, afin d’autoriser la mise en place du dispositif d’étanchéité tout en réalisant une barrière qui bloque la sortie de l’huile. La deuxième portion est placée de telle sorte qu’elle assure l’étanchéité entre la première portion rigide du dispositif d’étanchéité et la paroi périphérique de la cloche d’embrayage. The first rigid portion is a part made of synthetic material for example, the dimensional variations of which due to temperature are compatible with the flexibility of the second portion. Its dimensions are such that it can be inserted into the opening of the clutch housing. The second portion is made of flexible material, for example with shape memory, in order to allow the installation of the sealing device while providing a barrier that blocks the exit of the oil. The second portion is placed such that it seals between the first rigid portion of the sealing device and the peripheral wall of the clutch housing.
Le dispositif d’étanchéité peut avantageusement comprendre une troisième portion souple assurant l’étanchéité entre la première portion rigide et le bloc de raccordement du dispositif de connexion électrique. The sealing device can advantageously include a third flexible portion providing the seal between the first rigid portion and the connection block of the electrical connection device.
Cette troisième portion, tout comme la deuxième portion, est réalisée en matière souple, par exemple à mémoire de forme. La troisième portion, de par sa propriété, autorise la mise en place du dispositif d’étanchéité sur le bloc de raccordement tout en réalisant une barrière qui bloque la sortie de l’huile. La troisième portion est placée de telle sorte qu’elle assure l’étanchéité entre la première portion rigide et le bloc de raccordement du dispositif de connexion électrique. This third portion, like the second portion, is made of flexible material, for example with shape memory. The third portion, by virtue of its property, allows the installation of the sealing device on the connection block while providing a barrier that blocks the exit of the oil. The third portion is placed so that it seals between the first rigid portion and the connection block of the electrical connection device.
La première portion est rigide en ce qu’elle forme un élément structurel du dispositif d’étanchéité. La première portion rigide porte donc la deuxième portion et la troisième portion. The first portion is rigid in that it forms a structural element of the sealing device. The first rigid portion therefore carries the second portion and the third portion.
D’une manière générale, l’huile de la boite de vitesses peut circuler dans une zone longeant la première portion rigide du dispositif d’étanchéité et cette huile est empêchée dans son déplacement par la deuxième portion et la troisième portion du dispositif d’étanchéité. In general, the gearbox oil can circulate in a zone along the first rigid portion of the sealing device and this oil is prevented in its displacement by the second portion and the third portion of the sealing device.
Le dispositif d’étanchéité est pourvu d’un trou de passage configuré pour autoriser un raccordement électrique du bloc de raccordement du dispositif de connexion électrique. Un tel trou de passage traverse de part en part la première portion rigide, en formant un canal qui s’ouvre d’un côté sur l’extérieur de la cloche d’embrayage et de l’autre sur le bloc de raccordement du dispositif de connexion électrique de la machine électrique tournante. The sealing device is provided with a through hole configured to allow an electrical connection of the connection block of the electrical connection device. Such a passage hole passes right through the first rigid portion, forming a channel which opens on one side to the outside of the clutch housing and on the other to the connection block of the switching device. electrical connection of the rotating electrical machine.
Le bloc de raccordement du dispositif de connexion électrique de la machine électrique tournante est prévu pour être connecté à un dispositif de commande et de puissance, externe au système. Le bloc de raccordement est ainsi accessible depuis l’extérieur de la cloche d’embrayage, d’où la présence de l’ouverture traversant la paroi périphérique de cette même cloche d’embrayage. Le dispositif d’étanchéité est inséré dans cette ouverture. Il doit donc comprendre un trou de passage en regard de l’ouverture de la paroi périphérique de la cloche d’embrayage et du bloc de raccordement du dispositif de connexion électrique pour maintenir l’accessibilité du bloc de raccordement depuis l’extérieur du système. The connection block of the electrical connection device of the rotary electrical machine is designed to be connected to a control and power device, external to the system. The connection block is thus accessible from the outside of the clutch housing, hence the presence of the opening passing through the peripheral wall of the same clutch housing. The sealing device is inserted into this opening. It must therefore include a through hole facing the opening of the peripheral wall of the clutch housing and the connection block of the electrical connection device to maintain accessibility of the connection block from outside the system.
La deuxième portion souple est disposée contre une face extérieure de la première portion rigide. Comme indiqué précédemment, la première portion rigide est en matière synthétique, par exemple, et présente un trou de passage. La présence de ce trou de passage induit le fait que la première portion rigide comprend une face intérieure située en regard du trou de passage, et une face extérieure située en regard de l’extérieur de la première portion rigide. Dans la mesure où le dispositif d’étanchéité est inséré à l’intérieur de l’ouverture de la paroi périphérique de la cloche d’embrayage et que la deuxième portion assure l’étanchéité entre la première portion rigide et la paroi périphérique de la cloche d’embrayage, la deuxième portion doit donc être disposée sur la face extérieure de la première portion rigide pour assurer sa fonction. The second flexible portion is placed against an outer face of the first rigid portion. As indicated above, the first rigid portion is made of synthetic material, for example, and has a through hole. The presence of this through hole induces the fact that the first rigid portion comprises an interior face located opposite the through hole, and an exterior face located facing the exterior of the first rigid portion. Since the sealing device is inserted inside the opening of the peripheral wall of the clutch housing and the second portion seals between the first rigid portion and the peripheral wall of the housing clutch, the second portion must therefore be disposed on the outer face of the first rigid portion to perform its function.
La troisième portion souple est disposée contre une face intérieure de la première portion rigide. L’extrémité de la première portion rigide qui est insérée à l’intérieur du système épouse au moins une surface extérieure du bloc de raccordement du dispositif de connexion électrique. La troisième portion a pour fonction d’assurer l’étanchéité entre la première portion rigide et le bloc de raccordement. La troisième portion doit donc être disposée sur la face intérieure de la première portion rigide pour assurer sa fonction. The third flexible portion is disposed against an interior face of the first rigid portion. The end of the first rigid portion which is inserted inside the system conforms to at least one exterior surface of the block connection of the electrical connection device. The function of the third portion is to ensure the seal between the first rigid portion and the connection block. The third portion must therefore be arranged on the inner face of the first rigid portion to perform its function.
La deuxième portion et/ ou la troisième portion sont constituées chacune par au moins un joint d’étanchéité, par exemple un joint torique. The second portion and / or the third portion each consist of at least one seal, for example an O-ring.
Un joint torique est une pièce annulaire souple, généralement en caoutchouc. Il s’agit du seul composant de la deuxième portion et de la troisième portion. Sa souplesse permet une mise en place du dispositif d’étanchéité, tout en maintenant une barrière étanche. La présence de ces joints d’étanchéité, avantageusement des joints toriques prévient les risques d’échappement d’huile du système. An O-ring is a flexible annular part, usually made of rubber. This is the only component in the second and third portions. Its flexibility allows the sealing device to be fitted while maintaining a tight barrier. The presence of these seals, preferably O-rings, prevents the risk of oil escaping from the system.
Le dispositif d’étanchéité est courbé autour d’un axe de rotation du rotor. Dans un exemple de réalisation, le dispositif d’étanchéité a un rayon de courbure correspondant au rayon d’un cercle dont le centre est l’axe de rotation du rotor. La forme courbée du dispositif d’étanchéité est ainsi un arc de cercle qui s’étend sur un secteur angulaire compris entre 5 et 150, par exemple. D’une manière générale, le rayon de courbure du dispositif d’étanchéité dépend de la forme de la cloche d’embrayage. Selon un autre mode de réalisation, le dispositif d’étanchéité peut également être plat. The sealing device is curved around an axis of rotation of the rotor. In an exemplary embodiment, the sealing device has a radius of curvature corresponding to the radius of a circle whose center is the axis of rotation of the rotor. The curved shape of the sealing device is thus an arc of a circle which extends over an angular sector of between 5 and 15 0 , for example. In general, the radius of curvature of the sealing device depends on the shape of the clutch housing. According to another embodiment, the sealing device can also be flat.
Un rayon de courbure du dispositif d’étanchéité autour de l’axe de rotation du rotor est confondu avec un rayon de courbure de la paroi périphérique de la cloche d’embrayage. La forme incurvée de la première portion rigide du dispositif d’étanchéité permet d’épouser la forme circulaire de la cloche d’embrayage étant donné que les deux éléments sont centrés autour de l’axe de rotation du rotor. A radius of curvature of the seal around the axis of rotation of the rotor coincides with a radius of curvature of the peripheral wall of the clutch housing. The curved shape of the first rigid portion of the sealing device conforms to the circular shape of the clutch housing as the two elements are centered around the axis of rotation of the rotor.
La première portion rigide comprend un épaulement qui prend appui contre la paroi périphérique de la cloche d’embrayage. Le dispositif d’étanchéité présente l’épaulement de part et d’autre d’une partie de la première portion rigide qui demeure à l’extérieur de la cloche d’embrayage et fait butée contre la paroi périphérique de celle-ci une fois le dispositif d’étanchéité mis en place. Cela permet un meilleur maintien du dispositif d’étanchéité et garanti son efficacité dans le temps. The first rigid portion comprises a shoulder which bears against the peripheral wall of the clutch housing. The sealing device has the shoulder on either side of a part of the first rigid portion which remains outside the clutch housing and abuts against the peripheral wall thereof once the device sealing in place. This allows better maintenance of the sealing device and guarantees its effectiveness over time.
Le dispositif de connexion électrique comprend une partie de distribution du stator qui comprend une gorge annulaire disposée autour du bloc de raccordement dans laquelle se loge le dispositif d’étanchéité. Le bloc de raccordement du dispositif de connexion électrique est rectangulaire, et forme une saillie qui émerge de la partie de distribution du dispositif de connexion électrique. Il y a donc autour de cette saillie, en regard de l’ouverture de la paroi périphérique de la cloche d’embrayage, une gorge annulaire dans laquelle va se loger la première portion rigide du dispositif d’étanchéité. The electrical connection device comprises a distribution part of the stator which comprises an annular groove arranged around the connection block in which the sealing device is housed. The connection block of the electrical connection device is rectangular, and forms a projection which emerges from the distribution part of the electrical connection device. There is therefore around this projection, facing the opening of the peripheral wall of the clutch housing, an annular groove in which the first rigid portion of the sealing device will be housed.
Le dispositif d’étanchéité comprend des moyens de fixation pour le fixer sur la cloche d’embrayage. Des moyens de fixation sont présents, par exemple, sur chaque angle du dispositif d’étanchéité, au niveau de la partie disposée à l’extérieur de la cloche d’embrayage, permettant ainsi de fixer le dispositif d’étanchéité contre la paroi périphérique de la cloche d’embrayage. The sealing device includes fastening means for securing it to the clutch housing. Fastening means are present, for example, on each corner of the sealing device, at the level of the part disposed outside the clutch housing, thus making it possible to fix the sealing device against the peripheral wall of the clutch housing.
L’invention présente également le procédé de montage d’un tel système, qui consiste à insérer la machine électrique tournante dans le volume interne de la cloche d’embrayage de telle sorte que le bloc de raccordement du dispositif de connexion électrique soit en regard de l’ouverture de la cloche d’embrayage, puis d’insérer le dispositif d’étanchéité depuis l’extérieur de la cloche. Le montage du dispositif d’étanchéité est effectué une fois la machine électrique tournante insérée dans le volume interne de la cloche d’embrayage. Une fois le dispositif d’étanchéité mis en place, celui-ci peut être fixé à la paroi périphérique de la cloche d’embrayage par le biais des moyens de fixation. The invention also presents the method of mounting such a system, which consists in inserting the rotating electrical machine into the internal volume of the clutch housing so that the connection block of the electrical connection device is opposite opening the clutch housing, then insert the seal from the outside of the housing. The assembly of the sealing device is carried out once the rotating electrical machine has been inserted into the internal volume of the clutch housing. Once the sealing device is in place, it can be attached to the peripheral wall of the clutch housing via the fastening means.
Présentation des figures : Presentation of figures:
[Fig. î] est une vue générale du système comprenant la machine électrique tournante et la cloche d’embrayage ; [Fig. î] is a general view of the system comprising the rotating electrical machine and the clutch housing;
[Fig. 2] est une vue de face du dispositif d’étanchéité ; [Fig. 2] is a front view of the sealing device;
[Fig. 3] est une vue de dos du dispositif d’étanchéité ; [Fig. 4] est une vue en coupe transversale de la mise en place du dispositif d’étanchéité au sein du système ; [Fig. 3] is a rear view of the sealing device; [Fig. 4] is a cross-sectional view of the placement of the sealing device within the system;
[Fig. 5] est un schéma en coupe en vue longitudinale du dispositif d’étanchéité ; [Fig. 5] is a sectional diagram in longitudinal view of the sealing device;
[Fig. 6] est une vue de face du système après la mise en place du dispositif d’étanchéité, soit une fois le procédé de montage achevé. [Fig. 6] is a front view of the system after the installation of the sealing device, ie after the assembly process has been completed.
La figure 1 représente une vue générale du système comprenant la machine électrique tournante et la cloche d’embrayage et illustre une première étape du procédé de montage du système. La partie inférieure de la figure représente une machine électrique tournante 4 qui comprend un stator 5 et un rotor 28 mobile en rotation autour d’un axe de rotation 6. Le stator 5, lorsqu’il est alimenté en énergie, entraîne la rotation du rotor 28 et participe à la mise en fonctionnement de la machine électrique tournante 4. L’énergie alimentant le stator 5 est transmise par un dispositif de connexion électrique 7 disposé de manière circonférentielle autour du stator 5. Cette disposition permet une alimentation en énergie électrique sur toute la circonférence du stator 5. Figure 1 shows a general view of the system including the rotating electrical machine and the clutch housing and illustrates a first step of the system assembly process. The lower part of the figure represents a rotating electrical machine 4 which comprises a stator 5 and a rotor 28 movable in rotation about an axis of rotation 6. The stator 5, when it is supplied with energy, drives the rotation of the rotor. 28 and participates in the operation of the rotating electrical machine 4. The energy supplying the stator 5 is transmitted by an electrical connection device 7 disposed circumferentially around the stator 5. This arrangement allows a supply of electrical energy over any the circumference of the stator 5.
Le dispositif de connexion électrique 7 comporte deux parties. Une partie de distribution 8 du stator 5 correspond à la partie circulaire du dispositif de connexion électrique 7. Cette partie de distribution 8 est pourvue de pistes électriquement conductrices, telles que représentées sur la figure 4, étendues le long de la partie circulaire du dispositif de connexion électrique 7 afin d’alimenter l’intégralité de bobines du stator 5 sur toute sa circonférence. Une autre partie du dispositif de connexion électrique 7 est un bloc de raccordement 9. Ce bloc de raccordement 9 se présente sous une forme rectangulaire selon un angle de vue pris le long d’une direction radiale du rotor 28, et s’étend vers l’extérieur de la partie de distribution 8 du dispositif de connexion électrique 7. Le bloc de raccordement 9 est délimité par au moins une surface extérieure 31. Le bloc de raccordement 9 permet le branchement du dispositif de connexion électrique 7 à un dispositif de commande et de puissance, tel qu’un onduleur, externe à la machine électrique tournante 4. The electrical connection device 7 has two parts. A distribution part 8 of the stator 5 corresponds to the circular part of the electrical connection device 7. This distribution part 8 is provided with electrically conductive tracks, as shown in FIG. 4, extended along the circular part of the device. electrical connection 7 in order to supply all the coils of the stator 5 over its entire circumference. Another part of the electrical connection device 7 is a connection block 9. This connection block 9 is in a rectangular shape at a viewing angle taken along a radial direction of the rotor 28, and extends towards the end. 'exterior of the distribution portion 8 of the electrical connection device 7. The connection block 9 is delimited by at least one outer surface 31. The connection block 9 allows the connection of the electrical connection device 7 to a control device and power, such as an inverter, external to the rotating electrical machine 4.
Un dispositif de refroidissement 19 de la machine électrique tournante 4 est présent autour du stator 5. Il ceinture le stator 5 de telle sorte que le diamètre extérieur du stator 5 soit égal ou légèrement supérieur au diamètre intérieur du dispositif de refroidissement 19. Le dispositif de refroidissement 19 comprend une poche sur toute sa circonférence dans laquelle circule de l’eau glycolée, par exemple. A une base de la machine électrique tournante 4 est présente une embase de fixation 21 pourvue de trous répartis de manière régulière sur toute sa circonférence. Cette embase de fixation 21 permet une fixation de la machine électrique tournante 4. A cooling device 19 of the rotating electrical machine 4 is present around the stator 5. It surrounds the stator 5 such that the outer diameter of stator 5 is equal to or slightly greater than the inner diameter of cooling device 19. Cooling device 19 comprises a pocket over its entire circumference in which circulates glycol water, for example. At a base of the rotary electrical machine 4 is a fixing base 21 provided with holes distributed evenly over its entire circumference. This fixing base 21 allows fixing of the rotary electrical machine 4.
La partie supérieure de la figure 1 représente une cloche d’embrayage 2 de forme circulaire dont une paroi périphérique 30 délimite un volume interne 33. La cloche d’embrayage 2 est faite en métal, avantageusement en aluminium. La cloche d’embrayage 2 a une forme légèrement conique, de manière à ce que la machine électrique tournante 4 épouse les formes de la cloche d’embrayage 2 lorsqu’elle est insérée dans le volume interne 33 de la cloche d’embrayage 2. Un orifice circulaire 22 est situé sur une paroi de fond 34 de la cloche d’embrayage 2. Tout comme le stator 5 et le rotor 28, l’orifice circulaire 22 est centré sur l’axe de rotation 6 et est prévu pour le logement d’un arbre primaire de la boite de vitesses qui est entraîné par la rotation du rotor 28 lorsque le stator 5 est alimenté électriquement. La cloche d’embrayage The upper part of Figure 1 shows a circularly shaped clutch housing 2, a peripheral wall 30 of which defines an internal volume 33. The clutch housing 2 is made of metal, preferably aluminum. The clutch housing 2 has a slightly conical shape, so that the rotating electrical machine 4 conforms to the shapes of the clutch housing 2 when it is inserted into the internal volume 33 of the clutch housing 2. A circular orifice 22 is located on a bottom wall 34 of the clutch housing 2. Like the stator 5 and the rotor 28, the circular orifice 22 is centered on the axis of rotation 6 and is intended for the housing. a primary shaft of the gearbox which is driven by the rotation of the rotor 28 when the stator 5 is electrically supplied. The clutch bell
2 comprend un socle de fixation 20 pourvu de trous qui permettent la fixation de la cloche d’embrayage 2. La cloche d’embrayage 2 comprend également une ouverture 3 traversant une paroi périphérique 30. Cette ouverture 3 est de forme rectangulaire. 2 comprises a mounting base 20 provided with holes which allow the attachment of the clutch housing 2. The clutch housing 2 also includes an opening 3 passing through a peripheral wall 30. This opening 3 is rectangular in shape.
La figure 1 illustre aussi la première étape du procédé de montage du système. Cette étape consiste à insérer la machine électrique tournante 4 au sein du volume interne 33 de la cloche d’embrayage 2, le long d’une direction parallèle à l’axe de rotation 6. La mise en place de la machine électrique tournante 4 dans le volume interne 33 de la cloche d’embrayage 2 est effectuée de telle sorte que le bloc de raccordement 9 du dispositif de connexion électrique 7 de la machine électrique tournante 4 soit en regard de l’ouverture Figure 1 also illustrates the first step of the system assembly process. This step consists in inserting the rotating electrical machine 4 within the internal volume 33 of the clutch housing 2, along a direction parallel to the axis of rotation 6. The positioning of the rotating electrical machine 4 in the internal volume 33 of the clutch housing 2 is made so that the connection block 9 of the electrical connection device 7 of the rotating electrical machine 4 is facing the opening
3 traversant la paroi périphérique 30 de la cloche d’embrayage 2, offrant ainsi un accès depuis l’extérieur de la cloche d’embrayage 2 pour un branchement électrique du bloc de raccordement 9. Les trous de l’embase de fixation 21 de la machine électrique tournante 4 et les trous du socle de fixation 20 de la cloche d’embrayage 2 peuvent également être en regard les uns des autres quand un moyen de fixation relie la cloche d’embrayage 2 à un composant tel qu’un moteur à combustion interne. La première étape du procédé de montage est alors terminée. 3 passing through the peripheral wall 30 of the clutch housing 2, thus providing access from the outside of the clutch housing 2 for an electrical connection of the connection block 9. The holes in the mounting base 21 of the rotating electric machine 4 and the holes in the fixing base 20 of the Clutch housing 2 can also be opposite each other when a fastening means connects the clutch housing 2 to a component such as an internal combustion engine. The first step of the assembly process is then completed.
Le dispositif d’étanchéité îo est représenté vu de l’extérieur de la cloche d’embrayage 2 à la figure 2 et vu de dos à la figure 3. Le dispositif d’étanchéité 10 comprend au moins trois portions : une première portion 11 rigide, une deuxième portion 12 souple et une troisième portion 13 souple. La première portion 11 est une pièce en matériau synthétique, créée par moulage, par exemple, et présente une structure monobloc. Alternativement, une telle première portion 11 peut être métallique ou autres matériaux rigides. The sealing device Io is shown seen from the outside of the clutch housing 2 in Figure 2 and seen from the back in Figure 3. The sealing device 10 comprises at least three portions: a first rigid portion 11 , a second flexible portion 12 and a third flexible portion 13. The first portion 11 is a piece of synthetic material, created by molding, for example, and has a one-piece structure. Alternatively, such a first portion 11 can be metallic or other rigid materials.
La première portion 11 est pourvue d’un trou de passage 14, qui permet de maintenir une accessibilité au bloc de raccordement du dispositif de connexion électrique depuis l’extérieur de la cloche d’embrayage lorsque le dispositif d’étanchéité 10 est mis en place. La présence du trou de passage 14 induit le fait que le dispositif d’étanchéité comprend deux faces : une face extérieure 35 en regard de l’extérieur du dispositif d’étanchéité 10, et une face intérieure 36 en regard de l’intérieur du dispositif d’étanchéité 10. The first portion 11 is provided with a passage hole 14, which makes it possible to maintain accessibility to the connection block of the electrical connection device from the outside of the clutch housing when the sealing device 10 is in place. . The presence of the passage hole 14 induces the fact that the sealing device comprises two faces: an outer face 35 facing the outside of the sealing device 10, and an inner face 36 facing the interior of the device. sealing 10.
La première portion 11 comprend au moins une première sous-portion 24 et au moins une seconde sous-portion 25. La première sous-portion 24 forme un rebord plus haut et plus large que la deuxième sous-portion 25. La première sous-portion 24 se présente sous la forme d’un rectangle incurvé dont l’épaisseur est constante. Lorsque le dispositif d’étanchéité 10 est mis en place, la sous-portion 24 demeure à l’extérieur de la cloche d’embrayage de la machine électrique tournante 4. Un exemple de réalisation de la première sous-portion 24 se présente sous la forme d’un épaulement 16 qui fait butée contre la paroi périphérique de la cloche d’embrayage. La sous-portion 24 est courbée autour de l’axe de rotation. Des moyens de fixation 18 sont présents à chaque angle de la sous-portion 24, au niveau de l’épaulement 16, et permettent une fixation du dispositif d’étanchéité 10. Selon un exemple, ces moyens de fixation 18 sont des trous d’axe radiaux qui traversent l’épaulement 16. La seconde sous-portion 25 possède un périmètre plus petit que la première sous-portion 24. Il s’agit de la sous-portion qui est insérée dans l’ouverture de la paroi périphérique de la cloche d’embrayage. La face arrière de cette sous-portion 25 est par exemple rectangulaire, ce qui lui permet d’enclaver le bloc de raccordement du dispositif de connexion électrique qui est également rectangulaire dans la conception décrite. Autrement dit, le périmètre intérieur de la deuxième sous-portion 25 est sensiblement supérieur au périmètre extérieur du bloc de raccordement du dispositif de connexion électrique, tandis que le périmètre extérieur de la deuxième sous-portion 25 est sensiblement inférieur au périmètre intérieur de l’ouverture de la paroi périphérique de la cloche d’embrayage. La jonction entre la première sous- portion 24 et la deuxième sous-portion 25 présente une incurvation. The first portion 11 comprises at least a first sub-portion 24 and at least a second sub-portion 25. The first sub-portion 24 forms a rim higher and wider than the second sub-portion 25. The first sub-portion 24 is in the form of a curved rectangle whose thickness is constant. When the sealing device 10 is in place, the sub-portion 24 remains outside the clutch housing of the rotary electrical machine 4. An exemplary embodiment of the first sub-portion 24 is shown under the form of a shoulder 16 which abuts against the peripheral wall of the clutch housing. The sub-portion 24 is curved around the axis of rotation. Fixing means 18 are present at each corner of the sub-portion 24, at the level of the shoulder 16, and allow fixing of the sealing device 10. According to one example, these fixing means 18 are holes of radial axes which pass through the shoulder 16. The second sub-portion 25 has a smaller perimeter than the first sub-portion 24. This is the sub-portion which is inserted into the opening of the peripheral wall of the clutch housing. The rear face of this sub-portion 25 is for example rectangular, which allows it to enclose the connection block of the electrical connection device which is also rectangular in the design described. In other words, the inner perimeter of the second sub-portion 25 is substantially greater than the outer perimeter of the connection block of the electrical connection device, while the outer perimeter of the second sub-portion 25 is substantially less than the inner perimeter of the opening of the peripheral wall of the clutch housing. The junction between the first sub-portion 24 and the second sub-portion 25 has a curvature.
La deuxième portion 12 du dispositif d’étanchéité 10 est située sur la face extérieure 35 de la première portion 11. Elle se compose d’un ou plusieurs joints d’étanchéité, par exemple un ou plusieurs joints toriques dans la conception décrite. La matière souple de cette deuxième portion 12 autorise la mise en place du dispositif d’étanchéité 10 tout en garantissant l’étanchéité. The second portion 12 of the sealing device 10 is located on the outer face 35 of the first portion 11. It consists of one or more seals, for example one or more O-rings in the design described. The flexible material of this second portion 12 allows the installation of the sealing device 10 while ensuring the sealing.
La troisième portion 13, tout comme la deuxième portion 12, comporte un ou plusieurs joints d’étanchéité, par exemple un ou plusieurs joints toriques. La troisième portion 13 est située sur la face intérieure 36 de la première portion 11, au niveau de la deuxième sous-portion 25, et prévient également les remontées d’huile entre la première portion 11 et le bloc de raccordement. The third portion 13, like the second portion 12, has one or more seals, for example one or more O-rings. The third portion 13 is located on the inner face 36 of the first portion 11, at the level of the second sub-portion 25, and also prevents the rise of oil between the first portion 11 and the connection block.
La figure 4 illustre une vue du dessus en coupe qui montre le dispositif d’étanchéité 10 inséré dans l’ouverture de la cloche d’embrayage 2. La figure 4 illustre également une deuxième étape du procédé de montage du système. La deuxième étape du procédé de montage consiste à insérer un dispositif d’étanchéité 10 au travers de l’ouverture traversant la paroi périphérique 30 de la cloche d’embrayage 2 jusqu’au bloc de raccordement 9 du dispositif de connexion électrique 7 de la machine électrique tournante. Figure 4 illustrates a cross-sectional top view showing the sealing device 10 inserted into the opening of the clutch housing 2. Figure 4 also illustrates a second step of the system assembly process. The second step of the assembly process consists in inserting a sealing device 10 through the opening passing through the peripheral wall 30 of the clutch housing 2 up to the connection block 9 of the electrical connection device 7 of the machine. rotating electric.
Une partie du dispositif de connexion électrique 7 est représentée sur la figure 4. La partie de distribution 8 du dispositif de connexion électrique 7 comprend les pistes électriquement conductrices 26 qui font le tour du stator 5, tel que représenté sur la figure 1, et permettent son alimentation électrique. Une extrémité 29 de chacune des pistes 26 est logée dans le bloc de raccordement 9, légèrement décalé radial ement par rapport à la partie de distribution 8 du dispositif de connexion électrique 7. Part of the electrical connection device 7 is shown in FIG. 4. The distribution part 8 of the electrical connection device 7 comprises the electrically conductive tracks 26 which go around the stator 5, as shown in Figure 1, and allow its power supply. One end 29 of each of the tracks 26 is housed in the connection block 9, slightly offset radially with respect to the distribution part 8 of the electrical connection device 7.
Le bloc de raccordement 9 est délimité par la surface extérieure 31. Une gorge annulaire 17 fait le tour de la surface extérieure 31 du bloc de raccordement 9 du dispositif de connexion électrique 7. Cette gorge annulaire 17 permet l’accueil de la première portion 11 du dispositif d’étanchéité 10 lorsque celui-ci est mis en place. The connection block 9 is delimited by the outer surface 31. An annular groove 17 goes around the outer surface 31 of the connection block 9 of the electrical connection device 7. This annular groove 17 allows the reception of the first portion 11 of the sealing device 10 when the latter is in place.
Une poche à eau du dispositif de refroidissement 19 s’étend radialement au-delà de la partie de distribution 8 du dispositif de connexion électrique 7. La paroi périphérique 30 de la cloche d’embrayage 2 est également visible sur la figure 4. Un espace vide 27 subsiste entre une paroi externe 37 du dispositif de refroidissement 19 et une paroi interne 38 de la cloche d’embrayage 2 lorsque la machine électrique tournante est insérée dans la cloche d’embrayage 2. C’est dans cet espace 27 que circule l’huile de graissage d’un module d’embrayage disposé dans la cloche d’embrayage 2. Sans la présence du dispositif d’étanchéité 10, l’huile présent dans l’espace 27 peut donc soit sortir de la cloche d’embrayage 2 par l’ouverture de la paroi périphérique 30, soit s’infiltrer dans le bloc de raccordement 9 du dispositif de connexion électrique 7. Le dispositif d’étanchéité 10 est présenté sur la figure 4. La première portion 11 s’insère dans l’ouverture de la paroi périphérique 30 de la cloche d’embrayage 2 tandis que la deuxième portion 12 et la troisième portion 13 assurent l’étanchéité. La deuxième portion 12 assure l’étanchéité entre un bord 32 de l’ouverture de la paroi périphérique 30 de la cloche d’embrayage 2 et la face extérieure 35 du dispositif d’étanchéité 10. La troisième portion 13 assure l’étanchéité entre la surface extérieure 31 du bloc de raccordement 9 du dispositif de connexion électrique 7 et la face intérieure 36 du dispositif d’étanchéité 10. L’épaulement 16 fait butée sur la paroi périphérique 30 de la cloche d’embrayage 2. La forme incurvée de la première sous-portion de la première portion 11 est confondue au rayon de courbure de la paroi périphérique 30 de la cloche d’embrayage 2 et avantageusement épouse donc sa forme. A water pocket of the cooling device 19 extends radially beyond the distribution part 8 of the electrical connection device 7. The peripheral wall 30 of the clutch housing 2 is also visible in FIG. 4. A space vacuum 27 remains between an external wall 37 of the cooling device 19 and an internal wall 38 of the clutch housing 2 when the rotating electrical machine is inserted into the clutch housing 2. It is in this space 27 that the lubricating oil of a clutch module arranged in the clutch housing 2. Without the presence of the sealing device 10, the oil present in the space 27 can therefore either come out of the clutch housing 2 through the opening of the peripheral wall 30, or infiltrate the connection block 9 of the electrical connection device 7. The sealing device 10 is shown in Figure 4. The first portion 11 is inserted into the opening of the peripheral wall 30 of the bell clutch 2 while the second portion 12 and the third portion 13 provide sealing. The second portion 12 provides the seal between an edge 32 of the opening of the peripheral wall 30 of the clutch housing 2 and the outer face 35 of the sealing device 10. The third portion 13 provides the seal between the outer surface 31 of the connection block 9 of the electrical connection device 7 and the inner face 36 of the sealing device 10. The shoulder 16 abuts on the peripheral wall 30 of the clutch housing 2. The curved shape of the first sub-portion of the first portion 11 coincides with the radius of curvature of the wall peripheral 30 of the clutch housing 2 and therefore advantageously matches its shape.
Le schéma de la figure 5 représente une vue en coupe longitudinale montrant la position du dispositif d’étanchéité 10 lorsque celui-ci est mis en place dans l’ouverture de la cloche d’embrayage 2. Les extrémités 29 des pistes sont présentes au sein du bloc de raccordement 9. La première portion 11 se loge dans la gorge annulaire 17 située autour du bloc de raccordement 9 du dispositif de connexion électrique. L’épaulement 16 fait butée sur la paroi périphérique 30 de la cloche d’embrayage 2. La deuxième portion 12, de par sa souplesse, est intercalée entre la face extérieure 35 du dispositif d’étanchéité 10 et le bord 32 de l’ouverture de la paroi périphérique 30 de la cloche d’embrayage 2, et ce sur tout un pourtour du bord 32 de l’ouverture. La troisième portion 13 est intercalée entre la face intérieure 36 du dispositif d’étanchéité 10 et la surface extérieure 31 du bloc de raccordement 9 du dispositif de connexion électrique 7. La fixation du dispositif d’étanchéité 10 contre la paroi périphérique 30 de la cloche d’embrayage 2 par le biais des moyens de fixation 18 présents sur l’épaulement 16 permet de finaliser ce maintien. The diagram of FIG. 5 represents a view in longitudinal section showing the position of the sealing device 10 when the latter is placed in the opening of the clutch housing 2. The ends 29 of the tracks are present within of the connection block 9. The first portion 11 is housed in the annular groove 17 located around the connection block 9 of the electrical connection device. The shoulder 16 abuts on the peripheral wall 30 of the clutch housing 2. The second portion 12, by virtue of its flexibility, is interposed between the outer face 35 of the sealing device 10 and the edge 32 of the opening. of the peripheral wall 30 of the clutch housing 2, and this over an entire perimeter of the edge 32 of the opening. The third portion 13 is interposed between the inner face 36 of the sealing device 10 and the outer surface 31 of the connection block 9 of the electrical connection device 7. The fixing of the sealing device 10 against the peripheral wall 30 of the bell clutch 2 by means of the fixing means 18 present on the shoulder 16 makes it possible to finalize this maintenance.
L’huile du module d’embrayage peut être projetée dans l’espace 27 entre la paroi externe 37 du dispositif de refroidissement 19 et la cloche d’embrayage 2. Si l’huile s’infiltre entre la première portion 11 du dispositif d’étanchéité 10 et la cloche d’embrayage 2, elle est alors bloquée par le joint torique qui forme un exemple de réalisation de la deuxième portion 12. L’huile ne peut donc pas fuir à l’extérieur de la cloche d’embrayage 2. The oil from the clutch module can be sprayed into the space 27 between the outer wall 37 of the cooling device 19 and the clutch housing 2. If the oil seeps between the first portion 11 of the device. seal 10 and the clutch housing 2, it is then blocked by the O-ring which forms an exemplary embodiment of the second portion 12. The oil cannot therefore leak outside of the clutch housing 2.
L’huile peut aussi s’infiltrer par un passage entre la première portion 11 du dispositif d’étanchéité 10 et le bloc de raccordement 9 du dispositif de connexion électrique en tentant de passer par la gorge annulaire 17, mais elle est cette fois bloquée par le joint torique qui forme un exemple de réalisation de la troisième portion 13. L’huile ne peut donc pas s’infiltrer dans le bloc de raccordement 9 du dispositif de connexion électrique. D’une manière générale, lorsque le dispositif d’étanchéité 10 est mis en place, l’huile est retenue dans l’espace 27 par la combinaison de la première portion 11, de la deuxième portion 12 et de la troisième portion 13. The oil can also infiltrate through a passage between the first portion 11 of the sealing device 10 and the connection block 9 of the electrical connection device while attempting to pass through the annular groove 17, but this time it is blocked by the O-ring which forms an exemplary embodiment of the third portion 13. The oil therefore cannot infiltrate into the connection block 9 of the electrical connection device. Generally, when the sealing device 10 is in place, the oil is retained in space 27 by the combination of the first portion 11, the second portion 12 and the third portion 13.
Pour que l’accès au bloc de raccordement 9 du dispositif de connexion électrique soit optimal, le trou de passage 14 est situé en regard de l’ouverture de la paroi périphérique 30 de la cloche d’embrayage 2 et du bloc de raccordement 9 du dispositif de connexion électrique. For optimal access to the connection block 9 of the electrical connection device, the through hole 14 is located opposite the opening of the peripheral wall 30 of the clutch housing 2 and of the connection block 9 of the electrical connection device.
Après l’insertion de la machine électrique tournante dans le volume interne de la cloche d’embrayage 2 selon la première étape du procédé de montage du système, puis l’insertion du dispositif d’étanchéité 10 par l’ouverture de la paroi périphérique 30 de la cloche d’embrayage 2 selon la deuxième étape du procédé de montage du système, ce dernier est alors finalisé. After inserting the rotating electrical machine into the internal volume of the clutch housing 2 according to the first step of the system assembly process, then inserting the sealing device 10 through the opening of the peripheral wall 30 of the clutch housing 2 according to the second step of the system assembly method, the latter is then finalized.
Une fois le montage du dispositif d’étanchéité 10 achevé, le système 1 est tel que représenté dans la figure 6. Cette figure 6 montre une vue de côté du système 1, face à l’ouverture de la paroi périphérique 30 de la cloche d’embrayage 2. La machine électrique tournante est incluse dans le volume interne de la cloche d’embrayage 2 et n’est donc pas visible sur la figure 6. Seul le bloc de raccordement 9 du dispositif de connexion électrique est visible au travers du dispositif d’étanchéité 10. Le bloc de raccordement 9 comprend les extrémités 29 des pistes électriquement conductrices. Un connecteur « signal » 23 est également compris dans le bloc de raccordement 9 afin de permettre un branchement vers le dispositif de commande et de puissance externe au système 1. C’est par le biais de ce connecteur « signal » 23 que les informations de commande, de signal et/ou de diagnostic transitent entre la machine électrique tournante et le dispositif de commande et de puissance. Le bloc de raccordement 9 du dispositif de connexion électrique est donc accessible pour un branchement électrique externe malgré le fait que la machine électrique tournante soit comprise dans le volume interne de la cloche d’embrayage 2. Cette accessibilité est possible grâce à l’ouverture de la paroi périphérique 30 de la cloche d’embrayage 2 ainsi que grâce au trou de passage du dispositif d’étanchéité 10. Le dispositif d’étanchéité 10 est fixé à la paroi périphérique 30 de la cloche d’embrayage 2 grâce aux moyens de fixation 18 présents sur l’épaulement 16 de la première portion du dispositif d’étanchéité îo. Le système i selon l’invention peut aussi comprendre un module d’embrayage installé à l’intérieur du rotor de la machine électrique tournante, et le système est particulièrement adapté pour une utilisation au sein d’une chaîne de traction hybride pour véhicule automobile. Once the assembly of the sealing device 10 has been completed, the system 1 is as shown in figure 6. This figure 6 shows a side view of the system 1, facing the opening of the peripheral wall 30 of the bell d. clutch 2. The rotating electrical machine is included in the internal volume of the clutch housing 2 and is therefore not visible in FIG. 6. Only the connection block 9 of the electrical connection device is visible through the device. sealing 10. The connection block 9 comprises the ends 29 of the electrically conductive tracks. A “signal” connector 23 is also included in the connection block 9 in order to allow connection to the control and power device external to the system 1. It is through this “signal” connector 23 that the information of control, signal and / or diagnostic pass between the rotating electrical machine and the control and power device. The connection block 9 of the electrical connection device is therefore accessible for external electrical connection despite the fact that the rotary electrical machine is included in the internal volume of the clutch housing 2. This accessibility is possible thanks to the opening of the peripheral wall 30 of the clutch housing 2 as well as through the passage hole of the sealing device 10. The sealing device 10 is fixed to the peripheral wall 30 of the clutch housing 2 by means of the fixing means 18 present on the shoulder 16 of the first portion of the sealing device Io. The system i according to the invention can also include a clutch module installed inside the rotor of the rotating electrical machine, and the system is particularly suitable for use in a hybrid traction chain for a motor vehicle.
Cette chaîne de traction hybride comprend un moteur à combustion interne couplé à la machine électrique tournante selon l’invention par le module d’embrayage. Ainsi, la machine électrique tournante peut assurer la propulsion du véhicule automobile, seule ou en combinaison avec le moteur à combustion interne. Elle permet également le démarrage du moteur à combustion interne et l’assiste lors de l'accélération du véhicule. La machine électrique tournante peut également remplir la fonction d’un alternateur ou d’un frein du véhicule. Une énergie électrique peut également être récupérée lors du freinage du véhicule par la machine électrique tournante i selon l’invention. This hybrid powertrain comprises an internal combustion engine coupled to the rotating electric machine according to the invention by the clutch module. Thus, the rotating electrical machine can provide the propulsion of the motor vehicle, alone or in combination with the internal combustion engine. It also starts the internal combustion engine and assists it when accelerating the vehicle. The rotating electrical machine can also perform the function of an alternator or a vehicle brake. Electrical energy can also be recovered during braking of the vehicle by the rotating electrical machine i according to the invention.
Bien sûr, l’invention n’est pas limitée aux exemples qui viennent d’être décrits et de nombreux aménagements peuvent être apportés à ces exemples sans sortir du cadre de l’invention. Notamment, les différentes caractéristiques, formes, variantes et modes de réalisation de l’invention peuvent être associés les uns avec les autres selon diverses combinaisons dans la mesure où ils ne sont pas incompatibles ou exclusifs les uns des autres. En particulier toutes les variantes et modes de réalisation décrits précédemment sont combinables entre eux. Of course, the invention is not limited to the examples which have just been described and numerous modifications can be made to these examples without departing from the scope of the invention. In particular, the different characteristics, shapes, variants and embodiments of the invention can be associated with each other in various combinations as long as they are not incompatible or exclusive of each other. In particular, all the variants and embodiments described above can be combined with one another.

Claims

REVENDICATIONS
[Revendication i] Système (î) pour véhicule comprenant une cloche d’embrayage (2) ayant une paroi périphérique (30) délimitant un volume interne (33) et comprenant une ouverture (3) traversant la paroi périphérique (30), le système (1) comprenant une machine électrique tournante (4) logée dans le volume interne (33) de la cloche d’embrayage (2) et comprenant un stator (5), un rotor (28) et un dispositif de connexion électrique (7) comprenant au moins un bloc de raccordement (9) disposé en regard et à distance de l’ouverture (3) qui traverse la paroi périphérique (30) de la cloche d’embrayage (2), caractérisé en ce que le système (1) comprend un dispositif d’étanchéité (10) qui s’étend entre la paroi périphérique (30) de la cloche d’embrayage (2) et le bloc de raccordement (9) du dispositif de connexion électrique (7). [Claim i] System (î) for a vehicle comprising a clutch housing (2) having a peripheral wall (30) defining an internal volume (33) and comprising an opening (3) passing through the peripheral wall (30), the system (1) comprising a rotating electrical machine (4) housed in the internal volume (33) of the clutch housing (2) and comprising a stator (5), a rotor (28) and an electrical connection device (7) comprising at least one connection block (9) arranged opposite and at a distance from the opening (3) which passes through the peripheral wall (30) of the clutch housing (2), characterized in that the system (1) comprises a sealing device (10) which extends between the peripheral wall (30) of the clutch housing (2) and the connection block (9) of the electrical connection device (7).
[Revendication 2] Système (1) pour véhicule selon la revendication 1, dans lequel le dispositif d’étanchéité (10) forme une interface qui relie une surface extérieure (31) du bloc de raccordement (9) du dispositif de connexion électrique (7) à un bord (32) de la paroi périphérique (30) qui délimite l’ouverture (3) de la cloche d’embrayage (2). [Claim 2] A vehicle system (1) according to claim 1, wherein the sealing device (10) forms an interface which connects an outer surface (31) of the connection block (9) of the electrical connection device (7). ) at an edge (32) of the peripheral wall (30) which delimits the opening (3) of the clutch housing (2).
[Revendication 3] Système (1) pour véhicule selon l’une quelconque des revendications précédentes, dans lequel le dispositif d’étanchéité (10) comprend une première portion (11) rigide qui s’étend de la paroi périphérique (30) de la cloche d’embrayage (2) au bloc de raccordement (9) du dispositif de connexion électrique (7) et une deuxième portion (12) souple assurant une étanchéité entre la première portion (11) rigide et la paroi périphérique (30) de la cloche d’embrayage (2). [Claim 3] A vehicle system (1) according to any preceding claim, wherein the sealing device (10) comprises a first rigid portion (11) which extends from the peripheral wall (30) of the clutch housing (2) to the connection block (9) of the electrical connection device (7) and a second flexible portion (12) providing a seal between the first rigid portion (11) and the peripheral wall (30) of the clutch housing (2).
[Revendication 4] Système (1) pour véhicule selon l’une quelconque des revendications précédentes, dans lequel le dispositif d’étanchéité (10) comprend une première portion (11) rigide qui s’étend de la paroi périphérique (30) de la cloche d’embrayage (2) au bloc de raccordement (9) du dispositif de connexion électrique (7) et une troisième portion (13) souple assurant l’étanchéité entre la première portion (11) rigide et le bloc de raccordement (9) du dispositif de connexion électrique (7). [Claim 4] A vehicle system (1) according to any preceding claim, wherein the sealing device (10) comprises a first rigid portion (11) which extends from the peripheral wall (30) of the clutch housing (2) to the connection block (9) of the electrical connection device (7) and a third flexible portion (13) ensuring the seal between the first rigid portion (11) and the connection block (9) of the electrical connection device (7).
[Revendication 5] Système (1) pour véhicule selon l’une quelconque des revendications précédentes, dans lequel le dispositif d’étanchéité (10) est pourvu d’un trou de passage (14) configuré pour autoriser un raccordement électrique du bloc de raccordement (9) du dispositif de connexion électrique (7)· [Claim 5] A vehicle system (1) according to any preceding claim, wherein the sealing device (10) is provided with a through hole (14) configured to allow electrical connection of the terminal block. (9) of the electrical connection device (7)
[Revendication 6] Système (1) pour véhicule selon l’une quelconque des revendications précédentes, dans lequel la deuxième portion (12) souple est disposée contre une face extérieure (35) de la première portion (11) rigide. [Claim 6] A vehicle system (1) according to any preceding claim, wherein the second flexible portion (12) is disposed against an outer face (35) of the first rigid portion (11).
[Revendication 7] Système (1) pour véhicule selon l’une quelconque des revendications précédentes, dans lequel la troisième portion (13) souple est disposée contre une face intérieure (36) de la première portion (11) rigide. [Claim 7] A vehicle system (1) according to any preceding claim, wherein the third flexible portion (13) is disposed against an inner face (36) of the first rigid portion (11).
[Revendication 8] Système (1) pour véhicule selon l’une quelconque des revendications précédentes, dans lequel la deuxième portion (12) et/ ou la troisième portion (13) sont constituées chacune par au moins un joint d’étanchéité. [Claim 8] A vehicle system (1) according to any one of the preceding claims, wherein the second portion (12) and / or the third portion (13) each consist of at least one seal.
[Revendication 9] Système (1) pour véhicule selon l’une quelconque des revendications précédentes, dans lequel le dispositif d’étanchéité (10) est courbé autour d’un axe de rotation (6) du rotor (28). [Claim 9] A vehicle system (1) according to any preceding claim, wherein the sealing device (10) is bent about an axis of rotation (6) of the rotor (28).
[Revendication 10] Système (1) pour véhicule selon l’une quelconque des revendications précédentes, dans lequel un rayon de courbure du dispositif d’étanchéité (10) autour de d’axe de rotation (6) du rotor (28) est confondu avec un rayon de courbure de la paroi périphérique (30) de la cloche d’embrayage (2). [Claim 10] A system (1) for a vehicle according to any preceding claim, wherein a radius of curvature of the sealing device (10) about the axis of rotation (6) of the rotor (28) is coincident. with a radius of curvature of the peripheral wall (30) of the clutch housing (2).
[Revendication 11] Système (1) pour véhicule selon l’une quelconque des revendications précédentes, dans lequel la première portion (11) rigide comprend un épaulement (16) qui prend appui contre la paroi périphérique (30) de la cloche d’embrayage (2). [Claim 11] A vehicle system (1) according to any one of the preceding claims, wherein the first rigid portion (11) comprises a shoulder (16) which bears against the peripheral wall (30) of the clutch housing. (2).
[Revendication 12] Système (1) pour véhicule selon l’une quelconque des revendications précédentes, dans lequel le dispositif de connexion électrique (7) comprend une partie de distribution (8) du stator (5) qui comprend une gorge annulaire (17) disposée autour du bloc de raccordement (9), dans laquelle se loge le dispositif d’étanchéité (10). [Claim 12] A vehicle system (1) according to any preceding claim, wherein the electrical connection device (7) comprises a distribution part (8) of the stator (5). which comprises an annular groove (17) arranged around the connection block (9), in which the sealing device (10) is housed.
[Revendication 13] Système (1) pour véhicule selon l’une quelconque des revendications précédentes, dans lequel le dispositif d’étanchéité (10) comprend des moyens de fixation (18) pour le fixer sur la cloche d’embrayage (2). [Claim 13] A vehicle system (1) according to any preceding claim, wherein the sealing device (10) comprises fastening means (18) for fixing it to the clutch housing (2).
[Revendication 14] Procédé de montage d’un système (1) pour véhicule selon l’une quelconque des revendications précédentes comprenant : [Claim 14] A method of mounting a system (1) for a vehicle according to any one of the preceding claims comprising:
- une étape d’insertion de la machine électrique tournante (4) dans le volume interne (33) de la cloche d’embrayage (2) jusqu’à ce que le bloc de raccordement (9) du dispositif de connexion électrique (7) soit disposé en regard de l’ouverture (3) de la paroi périphérique (30) de la cloche d’embrayage (2), - a step of inserting the rotating electrical machine (4) into the internal volume (33) of the clutch housing (2) until the connection block (9) of the electrical connection device (7) is placed opposite the opening (3) of the peripheral wall (30) of the clutch housing (2),
- une étape d’insertion du dispositif d’étanchéité (10) dans l’ouverture (3) de la paroi périphérique (30) de la cloche d’embrayage (2) depuis l’extérieur de la cloche d’embrayage (2) et vers le volume interne (33) du système (1). - a step of inserting the sealing device (10) into the opening (3) of the peripheral wall (30) of the clutch housing (2) from the outside of the clutch housing (2) and to the internal volume (33) of the system (1).
PCT/EP2020/052795 2019-02-05 2020-02-05 Sealing device between a clutch basket and a rotating electrical machine WO2020161154A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1901136A FR3092377A1 (en) 2019-02-05 2019-02-05 Sealing device between a clutch housing and a rotating electrical machine
FR1901136 2019-02-05

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WO2020161154A1 true WO2020161154A1 (en) 2020-08-13

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FR (1) FR3092377A1 (en)
WO (1) WO2020161154A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070138882A1 (en) * 2004-02-13 2007-06-21 Toyota Jidosha Kabushiki Kaisha Motor module
WO2013157374A1 (en) * 2012-04-20 2013-10-24 アイシン・エィ・ダブリュ株式会社 Vehicle drive device
EP2962884A1 (en) * 2013-05-31 2016-01-06 Aisin Aw Co., Ltd. Vehicular drive device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070138882A1 (en) * 2004-02-13 2007-06-21 Toyota Jidosha Kabushiki Kaisha Motor module
WO2013157374A1 (en) * 2012-04-20 2013-10-24 アイシン・エィ・ダブリュ株式会社 Vehicle drive device
EP2962884A1 (en) * 2013-05-31 2016-01-06 Aisin Aw Co., Ltd. Vehicular drive device

Also Published As

Publication number Publication date
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