WO2023243276A1 - ユニット - Google Patents

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Publication number
WO2023243276A1
WO2023243276A1 PCT/JP2023/017853 JP2023017853W WO2023243276A1 WO 2023243276 A1 WO2023243276 A1 WO 2023243276A1 JP 2023017853 W JP2023017853 W JP 2023017853W WO 2023243276 A1 WO2023243276 A1 WO 2023243276A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
shaft
unit
differential
stator
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2023/017853
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
篤志 前田
稔 菖一
弘樹 上原
明 諏訪林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JATCO Ltd
Original Assignee
JATCO Ltd
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 JATCO Ltd filed Critical JATCO Ltd
Priority to EP23823578.2A priority Critical patent/EP4539308A4/en
Priority to US18/872,974 priority patent/US20250353366A1/en
Priority to CN202380039538.0A priority patent/CN119111029A/zh
Priority to JP2024528384A priority patent/JP7811267B2/ja
Publication of WO2023243276A1 publication Critical patent/WO2023243276A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of differential gearing
    • B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of differential gearing provided between independent half axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/007—Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
    • 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0806—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts
    • F16H37/0813—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts with only one input shaft
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • 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
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
    • 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
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears

Definitions

  • the present invention relates to a unit.
  • Patent Document 1 discloses a vehicle drive device that includes a counter gear mechanism that performs deceleration.
  • a vehicle drive device transmits the output torque of a rotating electric machine to a pair of wheels via a pair of output members to drive the vehicle.
  • the rotating electric machine can be used in combination with a power transmission mechanism such as a speed reduction mechanism, speed increase mechanism, or speed change mechanism.
  • a power transmission mechanism such as a speed reduction mechanism, speed increase mechanism, or speed change mechanism.
  • the present invention was made in view of these problems, and an object of the present invention is to improve the layout of the unit.
  • a unit includes a rotating electrical machine, an inverter located on the outer periphery of the rotating electrical machine, a first gear connected downstream of the rotating electrical machine, and a second gear meshing with the first gear. It has a third gear connected downstream of the second gear via a shaft, and a fourth gear that meshes with the third gear.
  • the shaft When viewed in the radial direction, the shaft has a portion that overlaps with the stator of the rotating electric machine, and when viewed in the axial direction, the inverter has a portion that overlaps with the second gear.
  • the second gear and the third gear are arranged apart from each other with respect to the shaft passing through the outer periphery (outer space) of the rotating electrical machine main body.
  • the second gear and the third gear are spaced apart from each other by the shaft extending along the outer periphery of the rotating electric machine body.
  • FIG. 1 is a schematic configuration diagram of a unit according to this embodiment.
  • FIG. 2 is a first diagram illustrating the arrangement of inverters.
  • FIG. 3 is a second diagram illustrating the arrangement of inverters.
  • FIG. 1 is a schematic configuration diagram of a unit 100 according to this embodiment.
  • the unit can also be called, for example, a motor unit (a unit having at least a motor) or a power transmission device (a device having at least a power transmission mechanism).
  • the motor is a rotating electric machine having an electric motor function and/or a generator function (at least one of the electric motor function and the generator function).
  • the power transmission mechanism is, for example, a gear mechanism and/or a differential gear mechanism.
  • a device (unit) having a motor and a power transmission mechanism is included in the concepts of both a motor unit and a power transmission device.
  • the unit 100 includes a housing 10, a rotating electric machine 20, a speed reduction mechanism 30, and a differential gear 40.
  • the unit 100 is mounted on an electric vehicle, and the vehicle is an electric vehicle.
  • the housing 10 includes a first cover 11, a second cover 12, a plate 13, and a case 14.
  • the rotating electric machine 20, the speed reduction mechanism 30, and the differential gear 40 are housed in the housing 10.
  • the first cover 11 closes the opening of the cylindrical case 14 from one side in the axial direction (the left side in the figure), and the second cover 12 closes the opening of the case 14 from the other side in the axial direction via the plate 13.
  • a rotating electrical machine 20 is provided in the case 14 .
  • the rotating electric machine 20 is provided with one side in the axial direction serving as an output side.
  • the rotating electrical machine 20 includes a rotor 21, a stator 22, and a rotating shaft 23, and constitutes a drive source for the vehicle.
  • the rotor 21 is provided on the outer periphery of the rotating shaft 23.
  • the stator 22 is provided in the case 14 and houses the rotor 21.
  • the rotating shaft 23 protrudes from the rotor 21 toward both sides in the axial direction, and is supported by a bearing 51 provided on the first cover 11 and a bearing 52 provided on the plate 13.
  • the rotating shaft 23 has a hollow structure.
  • a first drive shaft 61 passes through the rotating shaft 23 from one side in the axial direction.
  • the first drive shaft 61 further passes through the plate 13 and is assembled to the differential gear 40.
  • a bearing holding hole is formed in the portion of the plate 13 through which the first drive shaft 61 passes.
  • a bearing 52 is provided in the bearing holding hole from one end in the axial direction, and a bearing 55 is provided from the other end in the axial direction.
  • the speed reduction mechanism 30 is a gear mechanism, and includes a first gear 31, a second gear 32, a third gear 33, a fourth gear 34, and a long shaft 35.
  • the first gear 31 and the fourth gear 34 are arranged on the first axis AX1 together with the rotating electric machine 20.
  • the rotating electric machine 20, the first gear 31, and the fourth gear 34 are arranged coaxially with respect to the first axis AX1.
  • N is a natural number
  • the second gear 32 and the third gear 33 are arranged on the second axis AX2.
  • the first axis AX1 and the second axis AX2 both constitute the axis of the unit 100 and extend along the same direction. Therefore, the extending directions of the first axis AX1 and the second axis AX2 both correspond to the axial direction of the unit 100.
  • the axial direction means the axial direction of the rotating shaft of the parts (for example, a motor, a gear mechanism, or a differential gear mechanism) that constitute the unit.
  • the radial direction of the unit 100 is a direction perpendicular to the first axis AX1 or the second axis AX2.
  • the first axis AX1 constitutes the axis of the rotating shaft 23 and the differential gear 40
  • the second axis AX2 constitutes the axis of the long shaft 35.
  • the first gear 31 is connected downstream of the rotating electric machine 20.
  • the downstream side is the power output side, and the rotor 21 and stator 22 that generate power are used as references for the rotating electric machine 20. Therefore, in other words, the downstream of the rotating electric machine 20 can also be said to be the downstream of the stator 22.
  • the rotating shaft 23 may not be understood as a component of the rotating electric machine 20.
  • the downstream side is the power output side, whereas the upstream side is the power input side.
  • the first gear 31 is connected downstream of the rotating electric machine 20 so as to be able to transmit power.
  • the connection may be through other arrangements (eg, a clutch or other gear mechanism).
  • the first gear 31 is provided on one side of the rotor 21 in the axial direction, and is provided on the rotating shaft 23 at a portion between the rotor 21 and the bearing 51.
  • the first gear 31 is integrally formed with the rotating shaft 23.
  • the second gear 32 meshes with the first gear 31.
  • the second gear 32 is set to have a larger number of teeth than the first gear 31, and together with the first gear 31 constitutes a first reduction gear stage.
  • the second gear 32 is provided on the long shaft 35.
  • the second gear 32 is press-fitted into the long shaft 35 to be integrated with the long shaft 35.
  • the long shaft 35 extends along the rotation axis 23 and passes through the outer periphery (space around the outer circumference) of the stator 22 .
  • the long shaft 35 has a portion that overlaps the stator 22 when viewed in the radial direction.
  • the portion overlaps the stator 22 when viewed in the radial direction along a plane including the first axis AX1 and the second axis AX2.
  • Overlapping in a predetermined direction including a radial view and an axial view means overlapping in a predetermined direction, and means that a plurality of elements are lined up in a predetermined direction. From this, if a drawing shows multiple elements lined up in a predetermined direction, it can be assumed that there is a sentence in the specification explaining that multiple elements overlap when viewed in a predetermined direction. .
  • the long shaft 35 extends through the plate 13 toward the other end in the axial direction than the stator 22.
  • An insertion hole for the long shaft 35 is provided in the portion of the plate 13 through which the long shaft 35 passes.
  • the long shaft 35 is supported by a bearing 53 provided on the first cover 11 and a bearing 54 provided on the second cover 12.
  • the third gear 33 is provided on the long shaft 35.
  • the long shaft 35 is located downstream of the second gear 32, and the third gear 33 is connected downstream of the second gear 32 via the long shaft 35.
  • the third gear 33 is connected downstream of the second gear 32 via a part of the long shaft 35.
  • the third gear 33 is provided on a long shaft 35 extending from the stator 22 to the other side in the axial direction. This portion is closer to the other end in the axial direction than the plate 13.
  • the third gear 33 is provided between the stator 22 and the bearing 54, and is integrally formed with the long shaft 35.
  • the second gear 32 is provided on the long shaft 35 at one end in the axial direction
  • the third gear 33 is provided at the other end in the axial direction. That is, the second gear 32 and the third gear 33 are disposed at both ends of the long shaft 35, and are spaced apart by the long shaft 35 extending so as to pass through the outer periphery of the stator 22.
  • the axial dimension can be reduced, for example, compared to a case where the first gear 31 to the fourth gear 34 are arranged together on one side of the stator 22 in the axial direction.
  • the second gear 32 and the third gear 33 are provided between the bearing 53 and the bearing 54 in the axial direction.
  • the fourth gear 34 meshes with the third gear 33.
  • the fourth gear 34 is a final gear and is provided in the differential gear 40. Power from the rotating electrical machine 20 is transmitted from the fourth gear 34 to the differential gear 40. Therefore, the differential gear 40 is connected downstream of the fourth gear 34.
  • the fourth gear 34 is set to have a larger number of teeth than the third gear 33, and together with the third gear 33 constitutes a second reduction gear stage. Therefore, in the deceleration mechanism 30, the first gear 31 and the second gear 32, and the third gear 33 and the fourth gear 34 perform two-step deceleration. Thereby, in securing the reduction ratio, it becomes possible to make the diameter of the reduction gear smaller than when the reduction is in one stage. As a result, layout constraints such as the restriction on making the unit 100 more compact due to the necessity of ensuring a distance between the shafts corresponding to the large diameter of the reduction gear are alleviated.
  • the differential gear 40 is a differential gear mechanism and is arranged on the first axis AX1.
  • the differential gear 40 has a differential case 41 and a differential section 42.
  • the differential case 41 is supported by a bearing 55 provided on the plate 13 and a bearing 56 provided on the second cover 12, and rotates together with the fourth gear 34.
  • the fourth gear 34 is coaxially fixed to the outer wall of the differential case 41, and the differential case 41 accommodates the differential portion 42.
  • the differential section 42 distributes the power input to the differential case 41 via the fourth gear 34 to the left and right drive wheels of the vehicle and outputs the divided power.
  • the differential gear 40 protrudes in a direction away from the stator 22 relative to the fourth gear 34.
  • the differential gear 40 protrudes in this manner with a portion that protrudes further in the axial direction from the fourth gear 34 as a protrusion. Therefore, in other words, the differential gear 40 protrudes more in the direction away from the stator 22 than in the direction toward the fourth gear 34, and is arranged closer to the fourth gear 34 in the direction away from the stator 22.
  • the fourth gear 34 can be arranged closer to the stator 22 than in the case where the differential gear 40 protrudes further in the opposite direction, so that the long shaft 35 is prevented from becoming longer.
  • the effect of twist of the long shaft 35 is reduced, whereas the effect of twist becomes larger as the long shaft 35 becomes longer. Further, the expansion of the axial dimension of the unit 100 is also suppressed.
  • the bearing 54 which is a bearing that supports the long shaft 35, has the following shape when viewed in a radial direction (for example, as viewed in a radial direction along a plane including the first axis AX1 and the second axis AX2). It overlaps with the differential gear 40. Therefore, the axial dimension of the unit 100 on the straight line passing through the second axis AX2 can also be reduced.
  • a first drive shaft 61 is assembled into the differential portion 42 from one axial side, and a second drive shaft 62 is assembled from the other axial side. Power from the rotating electrical machine 20 is transmitted from the differential section 42 to one drive wheel via the first drive shaft 61 and to the other drive wheel via the second drive shaft 62.
  • the first drive shaft 61 is longer than the second drive shaft 62, thereby increasing the distance between the drive wheels and the differential gear 40, thereby suppressing the bending angle.
  • the first drive shaft 61 is supported by a bearing 57 provided on the first cover 11.
  • the fourth gear 34 can also be understood as a part of the differential gear 40.
  • the fourth gear 34 can also be understood as one component of the differential gear 40.
  • the differential gear 40 is connected downstream of the fourth gear 34 in such a way that a part of the differential gear 40 including the differential section 42 that outputs the power from the rotating electric machine 20 is connected downstream of the fourth gear 34. It can be understood that it is being done.
  • FIGS. 2 and 3 are explanatory diagrams of the arrangement of the inverter 70.
  • FIG. 2 shows the external appearance of the unit 100 in a radial direction with the housing 10 omitted.
  • FIG. 3 shows the arrangement of the main components necessary for explanation in the axial direction (when viewed from the right side of FIG. 2).
  • the unit 100 further includes an inverter 70.
  • the inverter 70 can be mounted on the housing 10 outside of the housing 10.
  • Inverter 70 may be housed in housing 10.
  • the inverter 70 has a portion that overlaps the second gear 32 when viewed in the axial direction. As a result, the inverter 70 is arranged so close to the long shaft 35 that it overlaps with the second gear 32, so that the unit 100 can be made smaller.
  • the long shaft 35 has a portion that overlaps the stator 22, for example, in the direction of arrow A in FIG.
  • Arrow view A is an example of a predetermined direction view
  • the predetermined direction view exemplified by arrow view A is, for example, a radial view seen along a plane including the first axis AX1 and the second axis AX2.
  • the long shaft 35 and the inverter 70 are offset from each other when viewed in a predetermined direction illustrated by arrow A. Offset when viewed in a predetermined direction means that a plurality of elements are not lined up in a predetermined direction. In light of the above explanation, if a drawing shows that multiple elements are not lined up in a predetermined direction, it may be considered that there is a sentence in the specification that explains that multiple elements are offset when viewed in a predetermined direction. .
  • the inverter 70 By offsetting the long shaft 35 disposed on the outer periphery of the stator 22 and the inverter 70 from each other in a predetermined direction illustrated by arrow A, the inverter 70 is not aligned in the direction in which the main body of the rotating electric machine 20 and the long shaft 35 are lined up. It is arranged offset from the direction. As a result, dimensional expansion in the direction in which the stator 22 and the long shaft 35 are lined up is suppressed. The space for arranging the inverter 70 can be easily secured by increasing the gear diameter of the second gear 32.
  • the unit 100 includes a rotating electrical machine 20, an inverter 70 located on the outer periphery of the rotating electrical machine 20, a first gear 31 connected downstream of the rotating electrical machine 20, and a second gear 32 meshing with the first gear 31. , a third gear 33 connected downstream of the second gear 32 via a long shaft 35, and a fourth gear 34 that meshes with the third gear 33.
  • the long shaft 35 has a portion that overlaps with the stator 22 of the rotating electric machine 20 when viewed in the radial direction
  • the inverter 70 has a portion that overlaps with the second gear 32 when viewed in the axial direction.
  • the second gear 32 and the third gear 33 are spaced apart from each other with respect to the long shaft 35 passing around the outer periphery of the stator 22.
  • the second gear 32 and the third gear 33 are spaced apart from each other by the long shaft 35 extending along the outer periphery of the stator 22.
  • the long shaft 35 has a portion that overlaps with the stator 22, and the long shaft 35 and the inverter 70 are offset from each other.
  • the inverter 70 can be arranged not in the direction in which the stator 22 and the long shaft 35 are lined up, but shifted from the direction. As a result, dimensional expansion in this direction can be suppressed.
  • the rotating electric machine 20, the first gear 31, and the fourth gear 34 are arranged on the first axis AX1, and the second gear 32 and the third gear 33 are arranged on the second axis AX2. Ru.
  • the unit 100 can be configured compactly in the radial direction by arranging each gear of the reduction mechanism 30 coaxially with respect to the two axes, the first axis AX1 and the second axis AX2. .
  • the rotating electric machine 20 on the first axis AX1, it is possible to further reduce the size of the rotating electric machine.
  • the outer diameter of the stator 22 and the gear diameter of the fourth gear 34 provided in the differential gear 40 are close to each other, such an arrangement is advantageous for compactness.
  • the unit 100 further includes a differential gear 40 connected downstream of the fourth gear 34.
  • the differential gear 40 is arranged on the first axis AX1 and protrudes in a direction away from the stator 22 with respect to the fourth gear 34. According to such a configuration, it is possible to suppress the long shaft 35 from becoming longer than when the differential gear 40 protrudes in the opposite direction. Therefore, the influence of twisting of the long shaft 35 can be reduced, and an increase in the axial dimension of the unit 100 can also be suppressed.
  • the bearing 54 that supports the long shaft 35 overlaps the differential gear 40 when viewed in the radial direction. According to such a configuration, the axial dimension of the unit 100 on a straight line passing through the second axis AX2 can also be reduced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Retarders (AREA)
PCT/JP2023/017853 2022-06-13 2023-05-12 ユニット Ceased WO2023243276A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP23823578.2A EP4539308A4 (en) 2022-06-13 2023-05-12 UNIT
US18/872,974 US20250353366A1 (en) 2022-06-13 2023-05-12 Unit
CN202380039538.0A CN119111029A (zh) 2022-06-13 2023-05-12 单元
JP2024528384A JP7811267B2 (ja) 2022-06-13 2023-05-12 ユニット

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022095068 2022-06-13
JP2022-095068 2022-06-13

Publications (1)

Publication Number Publication Date
WO2023243276A1 true WO2023243276A1 (ja) 2023-12-21

Family

ID=89191088

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/017853 Ceased WO2023243276A1 (ja) 2022-06-13 2023-05-12 ユニット

Country Status (5)

Country Link
US (1) US20250353366A1 (https=)
EP (1) EP4539308A4 (https=)
JP (1) JP7811267B2 (https=)
CN (1) CN119111029A (https=)
WO (1) WO2023243276A1 (https=)

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JP2017521293A (ja) * 2014-05-06 2017-08-03 ボルグワーナー スウェーデン エービー トルクベクタリング装置
CN108233612A (zh) * 2016-12-15 2018-06-29 佛山市净瓶泉卫浴有限公司 一种无反作用力传动装置
WO2020067277A1 (ja) * 2018-09-28 2020-04-02 日本電産株式会社 モータユニット
WO2021131204A1 (ja) 2019-12-26 2021-07-01 アイシン・エィ・ダブリュ株式会社 車両用駆動装置
WO2021152657A1 (ja) * 2020-01-27 2021-08-05 三菱電機株式会社 電気車の駆動制御装置

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US20250353366A1 (en) 2025-11-20
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