WO2024005027A1 - Machine tournante électrique et dispositif d'entraînement - Google Patents

Machine tournante électrique et dispositif d'entraînement Download PDF

Info

Publication number
WO2024005027A1
WO2024005027A1 PCT/JP2023/023844 JP2023023844W WO2024005027A1 WO 2024005027 A1 WO2024005027 A1 WO 2024005027A1 JP 2023023844 W JP2023023844 W JP 2023023844W WO 2024005027 A1 WO2024005027 A1 WO 2024005027A1
Authority
WO
WIPO (PCT)
Prior art keywords
rib
protrusion
electric machine
rotating electric
wall portion
Prior art date
Application number
PCT/JP2023/023844
Other languages
English (en)
Japanese (ja)
Inventor
大介 小笠原
淳 村上
和志 山本
恵介 中田
勇樹 石川
Original Assignee
ニデック株式会社
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 ニデック株式会社 filed Critical ニデック株式会社
Publication of WO2024005027A1 publication Critical patent/WO2024005027A1/fr

Links

Images

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
    • F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
    • 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
    • F16H57/03—Gearboxes; Mounting gearing therein characterised by means for reinforcing gearboxes, e.g. ribs
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

Definitions

  • the present invention relates to a rotating electrical machine and a drive device.
  • Patent Document 1 describes a motor having ribs on each of the front side and the back side of a planar cover.
  • the present invention provides a rotating electric machine that can suppress noise and vibration by suppressing membrane resonance of the housing during driving, and a drive device equipped with such a rotating electric machine. Make it one of the objectives.
  • One aspect of the rotating electric machine of the present invention includes a rotor that is rotatable around a central axis, a stator that is arranged to face the rotor in a radial direction with a gap therebetween, and a housing.
  • the housing has a rotating electrical machine housing section that houses the rotor and the stator.
  • the rotating electric machine accommodating portion includes a peripheral wall portion that radially surrounds the stator, and a plurality of fixing portions to which the stator is fixed.
  • the plurality of fixing parts include a first fixing part and a second fixing part that are adjacent to each other in the circumferential direction.
  • the peripheral wall part surrounds a radially outer side of the first fixing part, projects radially outwardly, and extends in the axial direction, and surrounds a radially outer part of the second fixing part, and projects radially outwardly. , a second protruding portion extending in the axial direction, and a first side wall convex portion extending in the axial direction and protruding radially outward to expand the internal space of the rotating electric machine housing portion radially outward.
  • the first side wall protrusion is located between the first protrusion and the second protrusion.
  • One aspect of the drive device of the present invention includes the above-mentioned rotating electrical machine and a transmission mechanism connected to the rotating electrical machine.
  • the housing has a transmission mechanism accommodating portion that accommodates the transmission mechanism.
  • noise and vibration can be suppressed by suppressing membrane resonance of the housing in a rotating electric machine and a drive device.
  • FIG. 1 is a conceptual diagram showing a drive device of one embodiment.
  • FIG. 2 is a perspective view showing a rotating electrical machine housing section of one embodiment.
  • FIG. 3 is a cross-sectional view showing a part of the drive device of one embodiment.
  • FIG. 4 is a cross-sectional view showing a rotating electrical machine housing section of one embodiment.
  • FIG. 5 is a bottom view showing the rotating electrical machine housing section of one embodiment.
  • FIG. 6 is a side view showing the rotating electrical machine housing section of one embodiment.
  • FIG. 7 is a cross-sectional view showing a rotating electrical machine accommodating portion according to a modification of the embodiment.
  • the vertical direction will be defined based on the positional relationship when the drive device of the embodiment is mounted on a vehicle located on a horizontal road surface. That is, the relative positional relationship in the vertical direction described in the following embodiments only needs to be satisfied at least when the drive device is mounted on a vehicle located on a horizontal road surface.
  • an XYZ coordinate system is shown as a three-dimensional orthogonal coordinate system as appropriate.
  • the Z-axis direction is the vertical direction.
  • the +Z side is the upper side in the vertical direction
  • the -Z side is the lower side in the vertical direction.
  • the upper side in the vertical direction is simply referred to as the "upper side”
  • the lower side in the vertical direction is simply referred to as the "lower side”.
  • the X-axis direction is a direction orthogonal to the Z-axis direction, and is the front-rear direction of the vehicle in which the drive device is mounted.
  • the +X side is the front side of the vehicle
  • the -X side is the rear side of the vehicle.
  • the front side of the vehicle is simply referred to as the "front side", and the rear side of the vehicle is simply referred to as the "rear side”.
  • the Y-axis direction is a direction perpendicular to both the X-axis direction and the Z-axis direction, and is the left-right direction of the vehicle, that is, the vehicle width direction.
  • the +Y side is the left side of the vehicle
  • the -Y side is the right side of the vehicle.
  • the left side of the vehicle will simply be referred to as the "left side”
  • the right side of the vehicle will simply be referred to as the "right side.”
  • the front-rear direction and the left-right direction are horizontal directions perpendicular to the vertical direction.
  • the positional relationship in the longitudinal direction is not limited to the positional relationship in the following embodiments, and the +X side may be the rear side of the vehicle and the -X side may be the front side of the vehicle.
  • the +Y side is the right side of the vehicle and the -Y side is the left side of the vehicle.
  • parallel directions include substantially parallel directions
  • orthogonal directions include substantially orthogonal directions.
  • the central axis J shown in each figure is a virtual axis extending in the Y-axis direction.
  • the direction parallel to the central axis J is simply referred to as the "axial direction”
  • the left side of the vehicle (+Y side) is referred to as one axial side
  • the right side of the vehicle (-Y side) is referred to as the other axial side. It is sometimes called.
  • the radial direction centered on the central axis J is simply referred to as the "radial direction”
  • the circumferential direction around the central axis J that is, the circumferential direction around the central axis J, is simply referred to as the "circumferential direction”. .
  • the circumferential direction is indicated by an arrow ⁇ in each figure.
  • the side in the circumferential direction that the arrow ⁇ faces is called “one side in the circumferential direction.”
  • the side opposite to the side toward which the arrow ⁇ faces in the circumferential direction is referred to as "the other side in the circumferential direction.”
  • One side in the circumferential direction is the side (+ ⁇ side) that goes clockwise around the central axis J when viewed from the left side (+Y side).
  • the other side in the circumferential direction is the side that goes counterclockwise around the central axis J (- ⁇ side) when viewed from the left side.
  • the drive device 10 of this embodiment shown in FIG. 1 is a drive device that is mounted on a vehicle and rotates an axle 73.
  • the vehicle in which the drive device 10 is mounted is a vehicle that uses a motor as a power source, such as a hybrid vehicle (HEV), a plug-in hybrid vehicle (PHV), or an electric vehicle (EV).
  • the drive device 10 includes a rotating electrical machine 15, a transmission mechanism 70 connected to the rotating electrical machine 15, a control device 64 that controls the rotating electrical machine 15, a fluid O, and a fluid path 90.
  • the rotating electric machine 15 is a motor.
  • the rotating electric machine 15 includes a rotor 20 that is rotatable around a central axis J, a stator 61 that is arranged to face the rotor 20 in the radial direction with a gap in between, and a housing 80.
  • the stator 61 is located outside the rotor 20 in the radial direction.
  • the rotor 20 includes a rotor core 22, a plurality of magnets (not shown), and a shaft 21.
  • the rotor 20 is rotatable around the central axis J.
  • the rotor core 22 has a cylindrical shape centered on the central axis J.
  • the rotor core 22 is provided with a hole that passes through the rotor core 22 in the axial direction.
  • a plurality of magnets (not shown) are held inside the rotor core 22. The plurality of magnets are arranged at intervals along the circumferential direction.
  • the shaft 21 has a cylindrical shape that extends in the axial direction centering on the central axis J.
  • the shaft 21 is passed through a hole in the rotor core 22 in the axial direction.
  • the outer peripheral surface of the shaft 21 is fixed to a hole in the rotor core 22.
  • the left (+Y side) end of the shaft 21 protrudes into a transmission mechanism accommodating portion 88, which will be described later.
  • the shaft 21 is a hollow shaft in which a hollow portion 21b is provided.
  • the shaft 21 is provided with a communication hole 21a.
  • the communication hole 21a connects the hollow portion 21b and the outside of the shaft 21.
  • the stator 61 includes a stator core 62 and a plurality of coils 63 attached to the stator core 62.
  • the stator core 62 has a substantially annular shape centered on the central axis J.
  • Stator core 62 includes a core back portion 62a, teeth portions 62b, and attachment portions 62c.
  • the core back portion 62a has a substantially annular shape centered on the central axis J.
  • the teeth portion 62b protrudes radially inward from the core back portion 62a.
  • a plurality of teeth portions 62b are provided at intervals along the inner peripheral surface of the core back portion 62a.
  • the coil 63 is attached to the stator core 62.
  • the attachment portion 62c protrudes radially outward from the core back portion 62a.
  • the mounting portion 62c is provided with a mounting hole 62d that passes through the mounting portion 62c in the axial direction.
  • the attachment hole 62d has a substantially circular shape when viewed in the axial direction.
  • a plurality of attachment parts 62c are provided along the outer circumferential surface of the core back part 62a at approximately equal intervals. In this embodiment, four attachment parts 62c are provided.
  • the transmission mechanism 70 includes a speed reduction device 71 connected to the rotating electric machine 15, and a differential device 72 connected to the speed reduction device 71.
  • the differential device 72 has a ring gear 72a.
  • the ring gear 72a is rotatable about an axis parallel to the central axis J. Power output from the rotating electric machine 15 is transmitted to the ring gear 72a via the reduction gear device 71.
  • An axle 73 extending in the axial direction is connected to the differential device 72 . Through these, the transmission mechanism 70 transmits the power of the rotating electric machine 15 to the axle 73.
  • the housing 80 accommodates the rotor 20, stator 61, transmission mechanism 70, and control device 64 inside.
  • the housing 80 includes a rotating electrical machine housing section 81 that houses the rotor 20 and the stator 61 therein, a transmission mechanism housing section 88 that houses the transmission mechanism 70 therein, and a control device housing section 89 that houses the control device 64 therein. and has.
  • the transmission mechanism housing section 88 is arranged on the left side (+Y side) of the rotating electric machine housing section 81 .
  • the control device housing section 89 is arranged above the rotating electrical machine housing section 81 .
  • fluid O is accommodated inside the rotating electrical machine housing section 81 and inside the transmission mechanism housing section 88 . That is, the fluid O is accommodated inside the housing 80.
  • the fluid O is used for cooling the rotating electrical machine 15 and for lubricating the plurality of gears and the like that constitute the transmission mechanism 70.
  • the rotating electric machine housing portion 81 has a substantially rectangular cylindrical shape extending in the axial direction.
  • the rotating electric machine housing section 81 houses the rotor 20 and the stator 61 therein.
  • the rotating electric machine housing section 81 has a peripheral wall section 82, a flange section 85, and an axle holding section 84.
  • the rotating electrical machine housing section 81 has a partition wall section 86 .
  • the rotating electrical machine housing section 81 has a fixing section 87 .
  • the peripheral wall portion 82 has a cylindrical shape extending in the axial direction. As shown in FIG. 1, the peripheral wall portion 82 surrounds the rotor 20 and the stator 61 from the outside in the radial direction. As shown in FIG. 4, the peripheral wall portion 82 has a substantially rectangular shape when viewed in the axial direction. The configuration of the peripheral wall portion 82 will be described in detail later.
  • the flange portion 85 protrudes radially outward from the peripheral wall portion 82.
  • the flange portion 85 has a first flange portion 85a and a second flange portion 85b.
  • the first flange portion 85a protrudes radially outward from the left side (+Y side) of the peripheral wall portion 82, that is, from the end on one axial side.
  • the second flange portion 85b protrudes radially outward from the right side ( ⁇ Y side) of the peripheral wall portion 82, that is, the other end in the axial direction.
  • the radial thickness dimension of the first flange portion 85a and the radial thickness dimension of the second flange portion 85b are each larger than the radial thickness dimension of the peripheral wall portion 82.
  • the axle holding portion 84 protrudes radially outward from the peripheral wall portion 82.
  • the axle holding portion 84 protrudes from the peripheral wall portion 82 to the front side (+X side).
  • the axle holding part 84 is provided with a hole 84a that passes through the axle holding part 84 in the axial direction.
  • the axle 73 is passed through the hole 84a.
  • the axle holding part 84 rotatably supports the axle 73.
  • the partition wall portion 86 is approximately plate-shaped and spreads along the radial direction.
  • the plate surface of the partition wall portion 86 faces in the axial direction.
  • the partition wall portion 86 is arranged at the left (+Y side) end of the rotating electrical machine housing portion 81 .
  • the partition wall portion 86 partitions the internal space of the rotating electric machine housing portion 81 and the internal space of the transmission mechanism housing portion 88 .
  • the partition wall portion 86 has a partition wall through hole 86a.
  • the partition wall through hole 86a is a hole that passes through the partition wall portion 86 in the axial direction.
  • the partition wall through-hole 86a allows the internal space of the rotating electrical machine housing section 81 and the internal space of the transmission mechanism housing section 88 to communicate with each other.
  • the partition wall through-hole 86a includes a first through-hole 86b and a second through-hole 86c.
  • the first penetrating portion 86b is a radially inner portion of the partition wall penetrating hole 86a.
  • the partition wall through hole 86a has a substantially rectangular shape when viewed in the axial direction.
  • the second penetrating portion 86c is a radially outer portion of the partition wall penetrating hole 86a.
  • the second penetrating portion 86c has a substantially rectangular shape when viewed in the axial direction. Note that, when viewed in the axial direction, the shapes of the first penetrating portion 86b and the second penetrating portion 86c are not limited to a substantially rectangular shape, but may be other shapes such as an arcuate shape.
  • the fixing part 87 is arranged between the stator 61 and the partition wall part 86 in the axial direction.
  • the fixing portion 87 protrudes from the partition wall portion 86 to the right side ( ⁇ Y side).
  • the fixing portion 87 has a substantially triangular shape that protrudes radially outward.
  • a plurality of fixing portions 87 are provided at approximately equal intervals along the circumferential direction. In this embodiment, four fixing parts 87 are provided.
  • the plurality of fixing parts 87 include a first fixing part 87a, a second fixing part 87b, a third fixing part 87c, and a fourth fixing part 87d.
  • the first fixing part 87a is arranged on the rear side (-X side) of the central axis J and below the central axis J.
  • the second fixing portion 87b is disposed on the front side (+X side) of the central axis J and below the central axis J.
  • the first fixing part 87a and the second fixing part 87b are adjacent to each other in the circumferential direction.
  • the third fixing portion 87c is disposed on the rear side of the central axis J and above the central axis J.
  • the first fixing part 87a and the third fixing part 87c are adjacent to each other in the circumferential direction.
  • the fourth fixing portion 87d is disposed in front of the central axis J and above the central axis J.
  • the fourth fixing part 87d is adjacent to the second fixing part 87b and the third fixing part 87c in the circumferential direction.
  • each of the fixed portions 87a, 87b, 87c, and 87d overlaps with the mounting portion 62c of the stator core 62 when viewed in the axial direction.
  • screw holes 87f recessed toward the left side (+Y side) are provided on the surfaces facing the right side (-Y side) of each of the fixing parts 87a, 87b, 87c, and 87d.
  • each screw hole 87f has a circular shape.
  • each screw hole 87f overlaps with the mounting hole 62d of the stator core 62 when viewed in the axial direction.
  • a female screw is provided on the inner peripheral surface of each screw hole 87f.
  • each attachment portion 62c is fixed to fixing portions 87a, 87b, 87c, and 87d, respectively.
  • stator core 62 is fixed to housing 80.
  • the housing 80 accommodates the fluid O therein.
  • fluid O is accommodated inside the rotating electrical machine housing section 81 and inside the transmission mechanism housing section 88 .
  • a fluid storage portion P in which fluid O is stored is provided in a lower region inside the transmission mechanism housing portion 88 .
  • the fluid O stored in the fluid storage portion P circulates within the fluid path 90.
  • the fluid O stored in the fluid storage section P is sent into the rotating electric machine housing section 81 through the fluid path 90.
  • the fluid O sent into the rotating electrical machine housing section 81 moves to the transmission mechanism housing section 88 via the partition wall through hole 86a, and returns to the fluid storage section P.
  • the fluid O is supplied to the stator 61 and cools the stator 61.
  • the fluid O may also be supplied to the speed reduction device 71 and the differential device 72 and used to lubricate the speed reduction device 71 and the differential device 72.
  • As the fluid O in order to perform lubrication and cooling functions, it is preferable to use an oil equivalent to automatic transmission fluid (ATF), which has a relatively low viscosity.
  • ATF automatic transmission fluid
  • fluid path is a concept that includes not only a “flow path” that creates a steady flow of fluid in one direction, but also a path where fluid temporarily remains and a path where fluid drips. It is.
  • the path for temporarily retaining the fluid includes, for example, the reservoir 91 that stores the fluid.
  • the fluid path 90 includes a scooping path 90a, a shaft supply path 90b, an intra-shaft path 90c, an intra-rotor path 90d, and a connection path 90e. Further, a reservoir 91 is provided in the fluid path 90 . The reservoir 91 is provided inside the transmission mechanism housing section 88 .
  • the scraping path 90a is a path for scraping up the fluid O from the fluid storage portion P to the reservoir 91 by the rotation of the ring gear 72a of the differential device 72. Reservoir 91 opens upward. Reservoir 91 receives fluid O stirred up by ring gear 72a.
  • the shaft supply path 90b is a path that guides the fluid O from the reservoir 91 to the hollow portion 21b of the shaft 21.
  • the intra-shaft path 90c is a path through which the fluid O passes within the hollow portion 21b.
  • the rotor internal path 90d passes through the inside of the rotor core 22 from the communication hole 21a of the shaft 21, and passes through the openings 22a provided in the surface facing the left side (+Y side) and the surface facing the right side (-Y side) of the rotor core 22. , which is the path through which the particles are scattered to the stator 61.
  • centrifugal force is applied to the fluid O inside the rotor core 22 as the rotor core 22 rotates. Thereby, the fluid O is continuously scattered radially outward from the rotor core 22. Further, as the fluid O scatters, the path inside the rotor core 22 becomes negative pressure, the fluid O accumulated in the reservoir 91 is sucked into the rotor 20, and the internal rotor path 90d is filled with the fluid O.
  • the fluid O supplied to the stator 61 removes heat from the stator 61 and cools the stator 61.
  • the fluid O that has cooled the stator 61 drips downward.
  • the connection path 90e is a path that guides the fluid O dripping downward from the stator 61 into the inside of the transmission mechanism housing section 88.
  • the connection path 90e connects the inside of the rotating electric machine housing section 81 and the inside of the transmission mechanism housing section 88 via the partition wall through hole 86a.
  • the fluid O dropped into the connection path 90e flows toward the left side (+Y side) through the connection path 90e, flows into the transmission mechanism housing portion 88 through the partition wall through-hole 86a, and is stored in the fluid storage portion P.
  • the peripheral wall portion 82 has a substantially rectangular shape when viewed in the axial direction.
  • the peripheral wall portion 82 includes a first protrusion 82a, a second protrusion 82b, a third protrusion 82c, a fourth protrusion 82d, a first circumferential wall 82f, a second circumferential wall 82g, and a third protrusion 82a. It has a peripheral wall portion 82h and a fourth peripheral wall portion 82i.
  • the first protruding portion 82a is a portion of the peripheral wall portion 82 that surrounds the first fixing portion 87a on the outside in the radial direction.
  • the second protruding portion 82b is a portion of the peripheral wall portion 82 that surrounds the radially outer side of the second fixing portion 87b.
  • the third protruding portion 82c is a portion of the peripheral wall portion 82 that surrounds the third fixing portion 87c on the outside in the radial direction.
  • the fourth protruding portion 82d is a portion of the peripheral wall portion 82 that surrounds the fourth fixing portion 87d on the outside in the radial direction.
  • the first protrusion 82a, the second protrusion 82b, the third protrusion 82c, and the fourth protrusion 82d each protrude radially outward.
  • the first protrusion 82a, the second protrusion 82b, the third protrusion 82c, and the fourth protrusion 82d each extend in the axial direction.
  • the first protrusion 82a, the second protrusion 82b, the third protrusion 82c, and the fourth protrusion 82d each have a shape that protrudes radially outward.
  • the first protrusion 82a, the second protrusion 82b, the third protrusion 82c, and the fourth protrusion 82d each have a high rigidity in the radial direction because they are not plate-shaped with their plate surfaces facing in the radial direction.
  • the first protrusion 82a, the second protrusion 82b, the third protrusion 82c, and the fourth protrusion 82d are portions of the peripheral wall 82 that have high radial rigidity.
  • the first peripheral wall portion 82f is a portion of the peripheral wall portion 82 between the first protrusion 82a and the second protrusion 82b.
  • the first peripheral wall portion 82f is arranged below the central axis J.
  • the first peripheral wall portion 82f has a first wall portion 82k, a second wall portion 82m, and a first side wall convex portion 82n.
  • the first wall portion 82k has a plate shape that extends substantially in the front-rear direction (X-axis direction). As shown in FIG. 5, the first wall portion 82k extends in the axial direction. As shown in FIG. 4, the end of the first wall 82k on one side in the circumferential direction is connected to the end of the first protrusion 82a on the other side in the circumferential direction.
  • the second wall portion 82m has a plate shape that extends substantially in the front-rear direction (X-axis direction). As shown in FIG. 5, the second wall portion 82m extends in the axial direction. As shown in FIG. 4, the other circumferential end of the second wall 82m is connected to the one circumferential end of the second protrusion 82b.
  • the first side wall convex portion 82n is a portion of the first peripheral wall portion 82f that protrudes radially outward.
  • the first side wall convex portion 82n is located below the central axis J and protrudes downward in the vertical direction.
  • the first side wall protrusion 82n has a substantially rectangular shape.
  • the first side wall convex portion 82n expands the internal space of the rotating electric machine housing portion 81 radially outward.
  • the first side wall protrusion 82n is located between the first protrusion 82a and the second protrusion 82b. As shown in FIG. 5, the first side wall convex portion 82n extends in the axial direction.
  • the upper (radially inner) end of the first side wall convex portion 82n on one side in the circumferential direction is connected to the end on the other side in the circumferential direction of the first wall portion 82k.
  • the upper (radially inner) end of the first side wall convex portion 82n and the other circumferential end is connected to the end of the second wall 82m on the one circumferential side.
  • the left (+Y side) end of the inner surface of the first side wall convex portion 82n is connected to the inner surface of the second through portion 86c of the partition wall through hole 86a.
  • the inner surface of the first side wall convex portion 82n constitutes a connection path 90e shown in FIG. 1.
  • the fluid O that cools the stator 61 and drips downward from the stator 61 flows inside the first side wall convex portion 82n toward the left side, and enters the inside of the transmission mechanism housing portion 88 via the partition wall through hole 86a. Flow into.
  • the inner surface of the first side wall convex portion 82n can be used as the connection path 90e, a separate path for flowing the fluid O from the inside of the rotating electric machine housing section 81 to the inside of the transmission mechanism housing section 88 is provided. There is no need to provide Therefore, there is no need to process the housing 80 or provide a separate member in order to provide a separate path, and an increase in the number of man-hours for manufacturing the housing 80 and the number of parts of the drive device 10 can be suppressed.
  • the second peripheral wall portion 82g is a portion of the peripheral wall portion 82 between the first protrusion 82a and the third protrusion 82c.
  • the second peripheral wall portion 82g is arranged on the rear side (-X side) of the central axis J.
  • the second peripheral wall portion 82g has a third wall portion 82p, a fourth wall portion 82q, and a second side wall convex portion 82r.
  • the third wall portion 82p has a plate shape extending in the substantially vertical direction (Z-axis direction). As shown in FIG. 6, the third wall portion 82p extends in the axial direction. As shown in FIG. 4, the end of the third wall 82p on the other side in the circumferential direction is connected to the end on the one side in the circumferential direction of the first protrusion 82a.
  • the fourth wall portion 82q has a plate shape extending in the substantially vertical direction (Z-axis direction). As shown in FIG. 6, the fourth wall portion 82q extends in the axial direction. As shown in FIG. 4, the end of the fourth wall 82q on one side in the circumferential direction is connected to the end of the third protrusion 82c on the other side in the circumferential direction.
  • the second side wall convex portion 82r is a portion of the second peripheral wall portion 82g that protrudes radially outward.
  • the second side wall protrusion 82r protrudes toward the rear side (-X side).
  • the second side wall protrusion 82r has a substantially rectangular shape when viewed in the axial direction.
  • the second side wall convex portion 82r expands the internal space of the rotating electric machine housing portion 81 radially outward.
  • the second side wall protrusion 82r is located between the first protrusion 82a and the third protrusion 82c.
  • the second side wall convex portion 82r extends in the axial direction.
  • the end of the second side wall convex portion 82r on the front side (+X side) and the other side in the circumferential direction is connected to the end of the third wall portion 82p on the one side in the circumferential direction.
  • the front end of the second side wall convex portion 82r on one side in the circumferential direction is connected to the end on the other side in the circumferential direction of the fourth wall portion 82q.
  • the third peripheral wall portion 82h is a portion of the peripheral wall portion 82 between the third protruding portion 82c and the fourth protruding portion 82d.
  • the third peripheral wall portion 82h is arranged above the central axis J.
  • the third peripheral wall portion 82h has a plate shape that extends substantially in the front-rear direction (X-axis direction).
  • the plate surface of the third peripheral wall portion 82h faces substantially vertically (Z-axis direction).
  • An end portion of the third peripheral wall portion 82h on one side in the circumferential direction is connected to an end portion on the other side in the circumferential direction of the fourth protruding portion 82d.
  • the other circumferential end of the third peripheral wall 82h is connected to the one circumferential end of the third protrusion 82c.
  • a lower portion of the control device accommodating portion 89 is arranged above the third peripheral wall portion 82h.
  • the third peripheral wall portion 82h is connected to a lower portion of the control device accommodating portion 89. This increases the rigidity of the third peripheral wall portion 82h in the radial direction, and suppresses membrane resonance of the third peripheral wall portion 82h when the rotating electric machine 15 and the drive device 10 are driven.
  • the fourth peripheral wall portion 82i is a portion of the peripheral wall portion 82 between the second protruding portion 82b and the fourth protruding portion 82d.
  • the fourth peripheral wall portion 82i is arranged on the front side (+X side) of the central axis J.
  • the fourth peripheral wall portion 82i has a plate shape extending in the substantially vertical direction (Z-axis direction).
  • the plate surface of the fourth peripheral wall portion 82i faces approximately in the front-rear direction (X-axis direction).
  • An end portion of the fourth peripheral wall portion 82i on one side in the circumferential direction is connected to an end portion on the other side in the circumferential direction of the first protrusion portion 82a.
  • the end of the fourth peripheral wall portion 82i on the other side in the circumferential direction is connected to the end on the one side in the circumferential direction of the fourth protrusion 82d.
  • the axle holding part 84 is arranged on the front side of the fourth peripheral wall part 82i. As shown in FIG. 2, the fourth peripheral wall portion 82i is connected to the axle holding portion 84. This increases the rigidity of the fourth circumferential wall portion 82i in the radial direction, and suppresses membrane resonance of the fourth circumferential wall portion 82i when the rotating electric machine 15 and the drive device 10 are driven.
  • the peripheral wall portion 82 has a first rib 83a, a second rib 83b, a third rib 83c, a fourth rib 83d, a fifth rib 83e, a sixth rib 83f, and a seventh rib 83g.
  • the first rib 83a, the second rib 83b, the third rib 83c, the fourth rib 83d, the fifth rib 83e, the sixth rib 83f, and the seventh rib 83g extend radially outward from the outer surface of the peripheral wall portion 82, respectively. stand out.
  • the first rib 83a extends from the first side wall protrusion 82n toward one side in the circumferential direction.
  • the other circumferential portion of the first rib 83a is connected to the outer surface of the first wall portion 82k.
  • a plurality of first ribs 83a are provided at intervals along the axial direction.
  • five first ribs 83a are provided.
  • the second rib 83b extends from the first side wall convex portion 82n toward the other side in the circumferential direction. That is, the first rib 83a and the second rib 83b extend away from each other in the circumferential direction from the first side wall convex portion 82n.
  • a portion of the second rib 83b on one side in the circumferential direction is connected to the outer surface of the second wall portion 82m.
  • a plurality of second ribs 83b are provided at intervals along the axial direction.
  • five second ribs 83b are provided.
  • the first rib 83a can increase the radial rigidity of the first wall 82k
  • the second rib 83b can increase the radial rigidity of the second wall 82m. . Therefore, when the rotating electric machine 15 and the drive device 10 are driven, it is possible to suppress each of the first wall portion 82k and the second wall portion 82m from causing membrane resonance. Therefore, it is possible to suppress membrane resonance of the first peripheral wall portion 82f in the radial direction, and it is possible to suppress noise and vibration when the rotating electric machine 15 and the drive device 10 are driven.
  • first rib 83a on one side in the circumferential direction is connected to the first protrusion 82a.
  • a portion of the second rib 83b on the other side in the circumferential direction is connected to the second protrusion 82b. Therefore, according to the present embodiment, since the first rib 83a is connected to the first protrusion 82a, which is a portion of the peripheral wall 82 with high radial rigidity, as described above, the radial direction of the first wall 82k is The rigidity can be increased more suitably.
  • the second rib 83b is connected to the second protruding portion 82b, which is a portion of the peripheral wall portion 82 with high radial rigidity, as described above, the radial rigidity of the second wall portion 82m is increased more suitably. be able to. Therefore, when the rotating electrical machine 15 and the drive device 10 are driven, it is possible to more preferably suppress membrane resonance in each of the first wall portion 82k and the second wall portion 82m.
  • the third rib 83c and the fourth rib 83d each extend in the axial direction.
  • the third rib 83c is arranged at the other end of the first protrusion 82a in the circumferential direction.
  • the third rib 83c is connected to the outer surface of the first wall portion 82k.
  • the fourth rib 83d is arranged at one end of the second protrusion 82b in the circumferential direction.
  • the fourth rib 83d is connected to the outer surface of the second wall portion 82m.
  • the third rib 83c can increase the radial rigidity of the first wall 82k
  • the fourth rib 83d can increase the radial rigidity of the second wall 82m. Can be done. Therefore, when the rotating electrical machine 15 and the drive device 10 are driven, it is possible to more preferably suppress membrane resonance in each of the first wall portion 82k and the second wall portion 82m.
  • the third rib 83c is disposed at the other end in the circumferential direction of the first protrusion 82a that protrudes outward in the radial direction
  • the fourth rib 83d is disposed in the other end in the circumferential direction. It is arranged at one end in the circumferential direction of the second protruding portion 82b that protrudes outward in the direction. Therefore, when viewed in the circumferential direction, the third rib 83c can be arranged to overlap the first protrusion 82a, and the fourth rib 83d can be arranged to overlap the second protrusion 82b.
  • the radial dimension of each of the third rib 83c and the fourth rib 83d can be increased.
  • the radial rigidity of each of the wall portion 82k and the second wall portion 82m can be increased. Therefore, while suppressing the increase in size of the rotating electric machine 15 and the drive device 10 in the radial direction, the first wall portion 82k and the second wall portion 82m perform membrane resonance when the rotating electric machine 15 and the drive device 10 are driven. can be suppressed.
  • the left side (+Y side) of the third rib 83c and the fourth rib 83d that is, the ends on one side in the axial direction, are respectively connected to the first flange portion 85a
  • the right ( ⁇ Y side), ie, the other axial end of the third rib 83c and the fourth rib 83d are respectively connected to the second flange portion 85b. That is, in the axial direction, the third rib 83c is provided across both ends of the first wall 82k, and the fourth rib 83d is provided across both ends of the second wall 82m.
  • the radial rigidity of the second wall portion 82m can be suitably increased. Therefore, when the rotating electric machine 15 and the drive device 10 are driven, it is possible to suitably suppress membrane resonance in the first wall portion 82k and the second wall portion 82m.
  • the radial thickness dimension of the first flange portion 85a and the radial thickness dimension of the second flange portion 85b are each smaller than the radial thickness dimension of the peripheral wall portion 82. It's also big. Therefore, the radial rigidity of each of the first flange portion 85a and the second flange portion 85b is greater than the radial rigidity of the peripheral wall portion 82. Therefore, since the third rib 83c is connected to the first flange portion 85a and the second flange portion 85b, the radial rigidity of the first wall portion 82k can be increased more suitably. Further, since the fourth rib 83d is connected to the first flange portion 85a and the second flange portion 85b, the radial rigidity of the second wall portion 82m can be increased more suitably.
  • the fifth rib 83e extends in the circumferential direction.
  • the fifth rib 83e extends in the circumferential direction on the radially outer side of the second side wall convex portion 82r.
  • a portion of the fifth rib 83e on the other side in the circumferential direction than the second side wall convex portion 82r is connected to the outer surface of the third wall portion 82p.
  • a portion of the fifth rib 83e on one circumferential side of the second side wall convex portion 82r is connected to the outer surface of the fourth wall portion 82q.
  • a plurality of fifth ribs 83e are provided at intervals along the axial direction. In this embodiment, five fifth ribs 83e are provided.
  • the radial rigidity of the third wall portion 82p and the fourth wall portion 82q can be increased by the fifth rib 83e, and when the rotating electric machine 15 and the drive device 10 are driven, the fifth rib 83e
  • the third wall portion 82p and the fourth wall portion 82q can suppress membrane resonance.
  • the second side wall protrusion 82r protrudes radially outward, so the second side wall protrusion 82r is a portion of the peripheral wall portion 82 that has high radial rigidity.
  • a portion of the radially inner edge of the fifth rib 83e is connected to the radially outer edge of the second side wall convex portion 82r, which is a portion with high radial rigidity. Therefore, the radial rigidity of the third wall portion 82p and the fourth wall portion 82q can be increased more suitably.
  • the other circumferential end of the fifth rib 83e is connected to the first protrusion 82a.
  • a portion of the fifth rib 83e on one side in the circumferential direction is connected to the third protrusion 82c. Therefore, according to the present embodiment, the fifth rib 83e is connected to the first protrusion 82a and the third protrusion 82c, which are the portions of the peripheral wall 82 with high radial rigidity, as described above.
  • the radial rigidity of the wall portion 82p and the fourth wall portion 82q can be increased more suitably.
  • the sixth rib 83f and the seventh rib 83g each extend in the axial direction. As shown in FIG. 4, the sixth rib 83f is arranged at one end of the first protrusion 82a in the circumferential direction. The sixth rib 83f is connected to the third wall portion 82p. The seventh rib 83g is arranged at the other end of the third protrusion 82c in the circumferential direction. The seventh rib 83g is connected to the fourth wall portion 82q. Therefore, according to the present embodiment, the radial rigidity of the third wall 82p can be increased by the sixth rib 83f, and the radial rigidity of the fourth wall 82q can be increased by the seventh rib 83g. Can be done.
  • the sixth rib 83f is disposed at one circumferential end of the first protrusion 82a that protrudes outward in the radial direction
  • the seventh rib 83g is It is arranged at the other end in the circumferential direction of the third protrusion 82c that protrudes outward. Therefore, when viewed in the circumferential direction, the sixth rib 83f can be placed overlapping the first protrusion 82a, and the seventh rib 83g can be placed overlapping the third protrusion 82c.
  • the left side (+Y side) of the sixth rib 83f and the seventh rib 83g are respectively connected to the first flange portion 85a
  • the ends of the sixth rib 83f and the seventh rib 83g on the right side ( ⁇ Y side), that is, on the other axial side, are each connected to the second flange portion 85b. Therefore, in the axial direction, the sixth rib 83f is provided across both ends of the third wall 82p, and the seventh rib 83g is provided across both ends of the fourth wall 82q. And the radial rigidity of the fourth wall portion 82q can be increased more suitably.
  • the sixth rib 83f is connected to the first flange portion 85a and the second flange portion 85b, which have high radial rigidity, so that the radial rigidity of the third wall portion 82p can be more suitably increased. Can be done. Further, since the seventh rib 83g is connected to the first flange portion 85a and the second flange portion 85b, the radial rigidity of the fourth wall portion 82q can be increased more suitably.
  • the peripheral wall portion 82 surrounds the first fixing portion 87a on the radial outside, protrudes radially outward, and extends axially on the first protruding portion 82a and the second fixing portion 87b on the radial outside.
  • a second protruding portion 82b that surrounds, protrudes radially outward, and extends in the axial direction, and a first side wall that protrudes radially outward to expand the internal space of the rotating electric machine housing portion 81 radially outwardly and extends in the axial direction.
  • the first side wall protrusion 82n is located between the first protrusion 82a and the second protrusion 82b in the circumferential direction.
  • the first circumferential wall portion 82f that connects the first protruding portion 82a and the second protruding portion 82b is provided with a first side wall that protrudes radially outward and has high radial rigidity. Since the convex portion 82n is provided, the radial rigidity of the first peripheral wall portion 82f can be increased. Therefore, when the rotating electric machine 15 and the drive device 10 are driven, membrane resonance of the first peripheral wall portion 82f can be suppressed, and noise and vibration can be suppressed.
  • the first side wall convex portion 82n is provided on the first circumferential wall portion 82f, the first wall portion 82k and the second wall portion, which are the portions of the circumferential wall portion 82 with low rigidity in the radial direction, The circumferential dimension of the portion 82m can be reduced. Therefore, when the rotating electric machine 15 and the drive device 10 are driven, the first wall portion 82k and the second wall portion 82m can be prevented from causing membrane resonance, and noise and vibration can be suppressed.
  • the peripheral wall part 82 surrounds the radially outer side of the third fixing part 87c, projects radially outwardly, and has a third protruding part 82c extending in the axial direction, and a third protruding part 82c that protrudes radially outwardly and rotates.
  • the internal space of the electric machine housing part 81 is expanded radially outward and has a second side wall protrusion 82r extending in the axial direction.In the circumferential direction, the second side wall protrusion 82r is connected to the first protrusion 82a and the third protrusion 82c.
  • a second side wall that protrudes outward in the radial direction and has high radial rigidity is provided on the second circumferential wall portion 82g that connects the first protrusion portion 82a and the third protrusion portion 82c in the circumferential direction. Since the convex portion 82r is provided, the radial rigidity of the second peripheral wall portion 82g can be increased. Therefore, when the rotating electric machine 15 and the drive device 10 are driven, membrane resonance of the second peripheral wall portion 82g can be suppressed, and noise and vibration can be suppressed.
  • the second side wall convex portion 82r is provided on the second peripheral wall portion 82g, the third wall portion 82p and the fourth wall portion, which are portions of the peripheral wall portion 82 with low rigidity in the radial direction, The circumferential dimension of the portion 82q can be reduced. Therefore, when the rotating electrical machine 15 and the drive device 10 are driven, the third wall portion 82p and the fourth wall portion 82q can be prevented from causing membrane resonance, and noise and vibration can be suppressed.
  • FIG. 7 is a cross-sectional view showing a rotating electric machine accommodating portion 181 of a housing 180 of a drive device 110 according to a modification of the embodiment.
  • the same reference numerals are given to the same components as in the above-described embodiment, and the description thereof will be omitted.
  • the first side wall convex portion 182n provided on the first circumferential wall portion 182f of the circumferential wall portion 182 of this modification has a shape whose circumferential dimension decreases as it goes radially outward.
  • the first inner surface 182s which is a surface facing one side in the circumferential direction, is an inclined surface located on one side in the circumferential direction toward the outside in the radial direction.
  • the second inner surface 182t which is a surface facing the other side in the circumferential direction, is an inclined surface located on the other side in the circumferential direction as it goes radially outward. That is, among the inner surfaces of the first side wall convex portion 182n, the two inner surfaces 182s and 182t facing in the circumferential direction are inclined surfaces that approach each other as they go downward in the vertical direction.
  • the angle formed between the first inner surface 182s and the third inner surface 182u which is a surface facing radially inward among the inner surfaces of the first side wall convex portion 182n, can be easily made obtuse. . Further, the angle between the second inner surface 182t and the third inner surface 182u can be easily made obtuse.
  • the angle between the first inner surface 182s and the third inner surface 182u is The fluid O is less likely to accumulate at the corner and at the corner between the second inner surface 182t and the third inner surface 182u. Therefore, in the connection path 190e of the fluid path 190, the fluid O can flow more smoothly toward the inside of the transmission mechanism housing portion 88.
  • the shapes of the first side wall convex portion and the second side wall convex portion are not limited to a substantially rectangular shape, and may protrude radially outward. Other shapes such as arcuate and triangular shapes may also be used. Furthermore, two or more first side wall protrusions and two or more second side wall protrusions may be provided. In this case, the radial rigidity of the first peripheral wall portion and the second peripheral wall portion can be further increased.
  • the shape of the peripheral wall portion is not limited to a substantially square shape, but may be other shapes such as a triangular shape, a pentagonal shape, and a circular shape.
  • first ribs, second ribs, and fifth ribs are not limited to five, but is four or less. There may be one, or six or more. Furthermore, two or more third ribs, four fourth ribs, six ribs, and two or more seventh ribs may be provided. The third rib, the fourth rib, the sixth rib, and the seventh rib may not be connected to the first flange portion and the second flange portion, respectively.
  • the rotating electric machine to which the present invention is applied is not limited to a motor, but may be a generator.
  • the use of the rotating electric machine is not particularly limited.
  • the use of the drive device to which the present invention is applied is not particularly limited.
  • the drive device may be mounted on a vehicle for purposes other than rotating an axle, or may be mounted on equipment other than the vehicle.
  • the posture in which the rotating electric machine and the drive device are used is not particularly limited.
  • the central axis of the rotating electric machine may be inclined with respect to a horizontal direction perpendicular to the vertical direction, or may extend in the vertical direction.
  • a rotor rotatable around a central axis a stator disposed to face the rotor in a radial direction with a gap therebetween, and a housing, the housing housing the rotor and the stator.
  • the rotating electric machine housing part has a peripheral wall part surrounding the stator in the radial direction, and a plurality of fixing parts to which the stator is fixed, and the plurality of fixing parts include:
  • the peripheral wall part includes a first fixing part and a second fixing part that are adjacent to each other in the circumferential direction, and the peripheral wall part surrounds the first fixing part on the outside in the radial direction, protrudes outward in the radial direction, and includes a first fixing part that extends in the axial direction.
  • the peripheral wall portion has a first rib and a second rib that protrude radially outward from the outer surface of the peripheral wall portion, and the first rib and the second rib extend from the first side wall convex portion.
  • the rotating electric machine according to (2) wherein the first rib is connected to the first protrusion, and the second rib is connected to the second protrusion.
  • the peripheral wall portion includes a third rib and a fourth rib that protrude radially outward from the outer surface of the peripheral wall portion, and a first wall portion that connects the first side wall convex portion and the first protrusion portion in the circumferential direction.
  • the rotating electric machine accommodating portion includes a first flange portion that protrudes radially outward from an end portion on one axial side of the peripheral wall portion, and a first flange portion protruding radially outwardly from the other end portion in the axial direction of the peripheral wall portion. a second flange portion that protrudes; one end of the third rib and the fourth rib in the axial direction are respectively connected to the first flange portion;
  • the plurality of fixing parts include a third fixing part adjacent to the first fixing part in the circumferential direction, and the peripheral wall part surrounds the radially outer side of the third fixing part and projects radially outward. , a third protrusion extending in the axial direction, and a second side wall convex part extending in the axial direction and protruding radially outward to expand the internal space of the rotating electric machine housing part radially outward; , the rotating electrical machine according to any one of (1) to (6), wherein the second side wall protrusion is located between the first protrusion and the third protrusion.
  • the peripheral wall portion has a fifth rib that protrudes radially outward from the outer surface of the peripheral wall portion, and the fifth rib extends in the circumferential direction, and the fifth rib has a radially inner edge portion of the fifth rib.
  • the peripheral wall portion includes a sixth rib and a seventh rib that protrude radially outward from the outer surface of the peripheral wall portion, and a third wall portion that connects the second side wall convex portion and the first protrusion portion in the circumferential direction. , and a fourth wall portion that connects the second side wall convex portion and the third protrusion portion in the circumferential direction, and the sixth rib and the seventh rib each extend in the axial direction, and the sixth rib.
  • the rotating electric machine accommodating portion includes a first flange portion that protrudes radially outward from an end portion on one axial side of the peripheral wall portion, and a first flange portion protruding radially outwardly from the other end portion in the axial direction of the peripheral wall portion.
  • the rotating electric machine according to (10) or (11), wherein the other end in the axial direction is connected to the second flange portion, respectively.
  • the rotating electrical machine according to any one of (1) to (12), and a transmission mechanism connected to the rotating electrical machine, and the housing has a transmission mechanism housing part that accommodates the transmission mechanism. , drive device.
  • the drive device wherein the first side wall protrusion protrudes vertically downward, and the inner surface of the first side wall protrusion forms the connection route.
  • the two inner surfaces facing in the circumferential direction are inclined surfaces that approach each other as they go downward in the vertical direction, and the first side wall convex portion
  • the drive device wherein an inner surface of the connecting path constitutes the connection path.

Landscapes

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

Abstract

La présente invention comprend un rotor qui est apte à tourner autour d'un axe central, un stator qui est disposé radialement en regard du rotor avec un espace interposé entre eux, et un boîtier. Le boîtier comporte une unité de logement de machine tournante électrique qui loge le rotor et le stator. L'unité de logement de machine tournante électrique comporte une partie paroi périphérique qui entoure radialement le stator et une pluralité de parties fixes auxquelles le stator est fixé. La pluralité de parties fixes comprend une première partie fixe et une seconde partie fixe qui sont adjacentes l'une à l'autre dans la direction circonférentielle. La partie paroi périphérique comporte : une première saillie qui entoure le côté radialement externe de la première partie fixe, fait saillie radialement vers l'extérieur, et s'étend dans la direction axiale ; une seconde saillie qui entoure le côté radialement externe de la seconde partie fixe, fait saillie radialement vers l'extérieur, et s'étend dans la direction axiale ; et une première saillie de paroi latérale qui fait saillie radialement vers l'extérieur pour agrandir radialement vers l'extérieur un espace interne à l'intérieur de l'unité de logement de machine tournante électrique et s'étend dans la direction axiale. La première saillie de paroi latérale est positionnée entre la première saillie et la seconde saillie dans la direction circonférentielle.
PCT/JP2023/023844 2022-06-30 2023-06-27 Machine tournante électrique et dispositif d'entraînement WO2024005027A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-106224 2022-06-30
JP2022106224 2022-06-30

Publications (1)

Publication Number Publication Date
WO2024005027A1 true WO2024005027A1 (fr) 2024-01-04

Family

ID=89382330

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/023844 WO2024005027A1 (fr) 2022-06-30 2023-06-27 Machine tournante électrique et dispositif d'entraînement

Country Status (1)

Country Link
WO (1) WO2024005027A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005245096A (ja) * 2004-02-25 2005-09-08 Toyota Motor Corp ステータコアの位置決め構造
JP2021016257A (ja) * 2019-07-12 2021-02-12 日本電産株式会社 モータユニット

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005245096A (ja) * 2004-02-25 2005-09-08 Toyota Motor Corp ステータコアの位置決め構造
JP2021016257A (ja) * 2019-07-12 2021-02-12 日本電産株式会社 モータユニット

Similar Documents

Publication Publication Date Title
US20230010604A1 (en) Drive device
US11906034B2 (en) Drive apparatus
JP2022136505A (ja) 駆動装置
JP7278845B2 (ja) 駆動装置
US20220294317A1 (en) Drive device
WO2020066955A1 (fr) Dispositif d'entraînement
WO2024005027A1 (fr) Machine tournante électrique et dispositif d'entraînement
US20230090548A1 (en) Drive apparatus
US20230136544A1 (en) Drive apparatus
US20230069613A1 (en) Drive apparatus
TWI797895B (zh) 旋轉電機和驅動裝置
US11863052B2 (en) Drive device
US11735975B2 (en) Drive device
WO2021161567A1 (fr) Moteur et unité de moteur
JP7318287B2 (ja) 駆動装置
JP7468313B2 (ja) 駆動装置
JP2022136504A (ja) 駆動装置
JP7491306B2 (ja) インバータユニット、およびモータユニット
WO2024004436A1 (fr) Dispositif d'entraînement
CN111953115B (zh) 马达单元
US20230139180A1 (en) Drive apparatus
JP7326836B2 (ja) 駆動装置および車両
WO2023228735A1 (fr) Rotor et machine électrique tournante
JP7468269B2 (ja) 駆動装置
JP2023025454A (ja) 駆動装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23831467

Country of ref document: EP

Kind code of ref document: A1