Vehicle torque vectoring apparatus

Abstract

To provide a vehicle torque vectoring apparatus, regarding a vehicle in which the driving of a pair of left and right wheels can be executed by motors and a power device other than the motors, in which torque movement is possible between the pair of left and right wheels when the power device is driving the wheels.SOLUTION: A vehicle torque vectoring apparatus comprises a pair of left and right motors provided relative to a pair of left and right wheels. Upon vehicle turning, the motor provided relative to the wheel on the inside of the turning in the pair of left and right wheels executes regenerative power generation by the driving force of a power device, and the motor provided relative to the wheel on the outside of the turning in the pair of left and right wheels drives the wheel on the outside of the turning by the power of the regenerative power generation.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a torque vectoring device for a vehicle. [Background technology]

[0002] Conventionally, there is a hybrid vehicle equipped with a motor and a power unit such as an internal combustion engine separate from the motor as a power source for a pair of left and right wheels (drive wheels). Also, a torque vectoring device for a vehicle that controls the distribution of torque transmitted to the pair of left and right wheels is known (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-152387 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the torque vectoring devices for vehicles of the prior art are not configured to distribute torque when a power unit other than the motor drives the wheels in a hybrid vehicle such as that described above.

[0005] The present invention has been made in consideration of the above, and one of its objectives is to provide a torque vectoring device for a vehicle in which a pair of left and right wheels can be driven by a motor and a power unit separate from the motor, and which is capable of transferring torque between the pair of left and right wheels when the power unit is driving the wheels. [Means for solving the problem]

[0006] The vehicle of the present invention is a torque vectoring device for a vehicle that is installed in a vehicle that has a pair of left and right drive shafts, a pair of left and right wheels that are connected to the pair of left and right drive shafts and rotate integrally with the pair of left and right drive shafts, and a power unit that drives the wheels via the drive shafts, and the device is equipped with an output member that outputs power from the power unit to the drive shafts, a pair of left and right motors installed corresponding to the pair of left and right wheels, a pair of left and right transmission units that connect the pair of left and right motors and the pair of left and right drive shafts and transmit torque between the pair of left and right motors and the pair of left and right drive shafts, and a differential unit that enables differential rotation of the pair of left and right drive shafts, and when the vehicle turns, the motor installed for the wheel on the inside of the pair of left and right wheels regenerates electricity using the driving force of the power unit, and the motor installed for the wheel on the outside of the pair of left and right wheels drives the wheel on the outside of the pair of left and right wheels using the regeneratively generated electricity. Effect of the Invention

[0007] According to the torque vectoring device for a vehicle of the present invention, in a vehicle in which a pair of left and right wheels can be driven by a motor and a power unit separate from the motor, it is possible to obtain a torque vectoring device for a vehicle that is capable of transferring torque between a pair of left and right wheels when the power unit is driving the wheels. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an exemplary schematic side view showing a vehicle according to a first embodiment. [Diagram 2] FIG. 2 is an exemplary schematic cross-sectional view showing a drive system of the vehicle according to the first embodiment. [Diagram 3] FIG. 3 is an exemplary schematic cross-sectional view illustrating the torque vectoring device for a vehicle according to the first embodiment. [Figure 4] FIG. 4 is an exemplary schematic block diagram showing a configuration of an electrical system of the vehicle according to the first embodiment. [Diagram 5]FIG. 5 is an exemplary schematic cross-sectional view illustrating a torque vectoring device for a vehicle according to the second embodiment. [Figure 6] FIG. 6 is an exemplary schematic cross-sectional view illustrating a torque vectoring device for a vehicle according to the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments and modifications of the present disclosure will be described with reference to the drawings. The configurations of the embodiments and modifications described below, as well as the actions and effects brought about by the configurations, are merely examples and are not limited to the contents described below.

[0010] The drawings are schematic, and the dimensional relationships and ratios of each element may differ from reality. The drawings may also include parts with different dimensional relationships and ratios. In this specification, ordinal numbers are used only to distinguish between parts, members, sites, positions, directions, etc., and do not indicate order or priority.

[0011] <First embodiment> FIG. 1 is an exemplary and schematic side view showing a vehicle of the first embodiment. FIG. 2 is an exemplary and schematic cross-sectional view showing a drive system of the vehicle of the first embodiment. The vehicle 1 has a configuration that enables human-powered running, electric-assisted running, or electric running (fully electric running). The vehicle 1 can also switch between a human-powered running mode in which the vehicle 1 runs human-powered, an electric-assisted mode in which the vehicle 1 runs electric-assisted, and an electric running mode in which the vehicle 1 runs electric. The vehicle 1 is an example of a hybrid vehicle.

[0012] 1 and 2, the vehicle 1 includes a frame 2, a plurality of (for example, three) wheels 3, a drive mechanism 4, a steering unit 5, and a seat unit 6. That is, the vehicle 1 of this embodiment is a three-wheeled vehicle.

[0013] The three wheels 3 are one front wheel 3F and two rear wheels 3R ​​(3RL, 3RR). The three wheels 3 are rotatably supported by the frame 2. In detail, the front wheel 3F is supported by the frame 2 via a steering unit 5. The two rear wheels 3R ​​are supported by the frame 2 via arm members 81R, 81L, respectively. The two rear wheels 3RL, 3RR are provided at an interval in the left-right direction of the vehicle 1. The two rear wheels 3RL, 3RR are coupled (fixed) to two drive shafts 53 and rotate integrally with the two drive shafts 53 around the rotation center axis Ax1. That is, the left rear wheel 3RL rotates integrally with the left drive shaft 53, and the right rear wheel 3RR rotates integrally with the right drive shaft 53. The left-right direction of the vehicle 1 is also referred to as the width direction (vehicle width direction). The two rear wheels 3R ​​are an example of a pair of left and right wheels, and the two drive shafts 53 are an example of a pair of left and right drive shafts.

[0014] The drive mechanism 4 drives and rotates the two rear wheels 3RL and 3RR. The drive mechanism 4 includes two pedals 11 (left and right), two pedal arm members 12, a shaft 73, a drive gear 13 (front sprocket), a driven gear 14 (rear sprocket), and a chain 15. The chain 15 is stretched across the drive gear 13 and the driven gear 14. The drive gear 13 and the driven gear 14 can transmit power through the chain 15, and a motor 17 (rotating electric machine) is connected to the driven gear 14 via a transmission unit 18. The drive gear 13 is an example of a drive unit, the driven gear 14 is an example of a driven unit, and the chain 15 is an example of a connecting member. Note that the drive unit, the driven unit, and the connecting member are not limited to the above. For example, the drive unit and the driven unit may each be a pulley, and the connecting member may be a belt.

[0015] The two pedals 11 are provided rotatably around a rotation center axis Ax2. Specifically, the two pedals 11 are connected to a shaft 73 via two pedal arm members 12. The shaft 73 is supported by the frame 2 rotatably around the rotation center axis Ax2. The pedals 11 are rotated around the rotation center axis Ax2 by the driver's manual power, thereby rotating the shaft 73. The rotation center axis Ax2 is aligned with the rotation center axis Ax1. The frame 2 is an example of a support portion.

[0016] 2, the drive gear 13, the driven gear 14, and the chain 15 constitute a transmission mechanism 10. The transmission mechanism 10 connects the shaft 73 and the rear wheel 3R, and transmits the rotational force of the shaft 73 to the rear wheel 3R to rotate the rear wheel 3R.

[0017] The drive gear 13 is connected to a shaft 73 and rotates integrally with the shaft 73 about a rotational center axis Ax2.

[0018] The driven gear 14 is coupled to the rear wheel 3R via a drive shaft 53, and rotates integrally with the rear wheel 3R about the rotational center axis Ax2. In detail, the driven gear 14 is connected to the drive shaft 53 via a one-way clutch 52. That is, the one-way clutch 52 connects the drive shaft 53 and the driven gear 14.

[0019] The one-way clutch 52 transmits the rotational force of the shaft 73 rotating in a first rotational direction, which is the rotational direction of the shaft 73 when the vehicle 1 moves forward, to the rear wheel 3R via the drive shaft 53. On the other hand, the one-way clutch 52 blocks the transmission of the rotational force of the rear wheel 3R to the shaft 73. Specifically, when the shaft 73, the drive gear 13, and the driven gear 14 rotate in the first rotational direction, the one-way clutch 52 connects the driven gear 14 to the drive shaft 53 and rotates the driven gear 14 and the drive shaft 53 together. When the driven gear 14 rotates in the opposite direction to the first rotational direction relative to the drive shaft 53, the one-way clutch 52 does not connect the driven gear 14 to the drive shaft 53 and rotates the driven gear 14 and the drive shaft 53 (rear wheel 3R) relatively. That is, when the vehicle 1 moves forward and the rotation speed of the drive shaft 53 is greater than the rotation speed of the driven gear 14, the one-way clutch 52 releases the connection between the drive shaft 53 and the driven gear 14.

[0020] In the above configuration, the rotational motion of the pedal 11, i.e., the rotational motion of the shaft 73, is converted into the rotational motion of the rear wheel 3R via the drive gear 13, the chain 15, and the driven gear 14. The two pedals 11, the two pedal arm members 12, and the shaft 73 constitute a crank pedal device 11A. That is, the crank pedal device 11A is provided rotatably around a rotation central axis Ax2, and rotates the rear wheel 3R around the rotation central axis Ax1 via the chain 15. The crank pedal device 11A is a manual power device. The crank pedal device 11A is an example of a power device.

[0021] In the electric assist mode, the motor 17 applies a rotational force (assist force) corresponding to the operating force (pressing force) acting on the pedal 11 to the driven gear 14 via the transmission unit 18. As a result, when the vehicle 1 is traveling, the rear wheels 3RL, 3RR are rotationally driven by the operating force (pressing force) acting on the pedal 11 and the force transmitted from the motor 17. In the electric travel mode, the motor 17 applies a rotational force to the driven gear 14 via the transmission unit 18. The motor 17 rotates by power supplied from a battery 102 (FIG. 4). For example, the vehicle 1 may be provided with a clutch between the motor 17 and the drive shaft 53 or the like in order to enable switching between a human-powered travel mode in which the vehicle 1 travels only by the operation of the drive mechanism 4, an assisted travel mode in which the vehicle 1 travels only by the drive of the motor 17, and an electric travel mode in which the vehicle 1 travels only by the drive of the motor 17.

[0022] The drive mechanism 4 also has a brake function. When a brake operating member is operated, the drive mechanism 4 generates a braking force by a brake device. At this time, the drive mechanism 4 can also generate a braking force by regenerative operation of the motor 17.

[0023] 1, the steering unit 5 has a handle 31 and a front support unit 32 connected to the handle 31. The front support unit 32 rotatably supports the front wheel 3F. The steering unit 5 is rotatably connected to the frame 2 via a connecting unit 33.

[0024] 2, the vehicle 1 has an arm member 81R and an arm member 81L. The arm member 81R and the arm member 81L are spaced apart from each other in the axial direction of the rotation center axis Ax2, i.e., in the axial direction of the shaft 73. The arm member 81R has a base end 81Ra supported by the shaft 73 and a tip end 81Rb that rotatably supports the rear wheel 3R via the drive shaft 53. The arm member 81L has a base end 81La supported by the shaft 73 and a tip end 81Lb that rotatably supports the rear wheel 3RL via the drive shaft 53.

[0025] Fig. 3 is an exemplary schematic cross-sectional view showing a torque vectoring device for a vehicle according to the first embodiment. As shown in Fig. 3, the vehicle 1 includes a torque vectoring device 35. The torque vectoring device 35 is an example of a torque vectoring device for a vehicle.

[0026] The torque vectoring device 35 includes a pair of left and right driven gears 14 , a pair of left and right motors 17 , a pair of left and right transmission units 18 , and a differential unit 40 .

[0027] The driven gear 14 outputs the power from the crank pedal device 11A to the drive shaft 53. The driven gear 14 is an example of an output member.

[0028] The pair of left and right motors 17 are a left motor 17L provided for the left rear wheel 3L and a left motor 17R provided for the right rear wheel 3R. The motors 17 are, for example, DC motors. However, the motors 17 may be AC ​​motors. The motor 17 has a motor case 17a and a motor shaft 17b. The motor shaft 17b protrudes from the motor case 17a.

[0029] The pair of left and right transmission units 18 connect the pair of left and right motors 17 and the pair of left and right drive shafts 53 , and transmit torque between the pair of left and right motors 17 and the pair of left and right drive shafts 53 .

[0030] In detail, the transmission unit 18 has a case 61 and a gear train 62. Each case 61 is fixed to the arm members 81L, 81R. The case 61 rotatably supports the drive shaft 53 via a bearing 75. The motor case 17a is fixed to the case 61. That is, the case 61 supports the motor 17.

[0031] The gear train 62 is housed in the case 61. The gear train 62 includes a plurality of gears 63, 64 that mesh with each other. The gear 63 rotates integrally with the motor shaft 17b. The gear 64 rotates integrally with the drive shaft 53. The gear train 62 transmits torque between the motor 17 and the drive shaft 53.

[0032] The differential portion 40 enables differential rotation of a pair of left and right drive shafts 53. The differential portion 40 of the present embodiment includes a pair of left and right one-way clutches 52. The differential portion 40 is also referred to as a differential rotation mechanism.

[0033] 4 is an exemplary schematic block diagram showing a configuration of an electrical system of the vehicle according to the first embodiment. As shown in FIG. 4, the torque vectoring device 35 further includes a control device 100 and two driver circuits 101.

[0034] The control device 100 is, for example, a device that controls the motor 17, and includes, for example, a CPU (Central Processing Unit), a memory, etc. The memory includes a ROM (Read Only Memory) and a RAM (Random Access Memory).

[0035] The control device 100 is connected to two driver circuits 101 and two wheel speed sensors 103 .

[0036] The two driver circuits 101 are a driver circuit 101L for the motor 17L and a driver circuit 101R for the motor 17R. Each driver circuit 101 controls the corresponding motor 17 in accordance with a command from the control device 100. That is, the control device 100 controls the motor 17 via the driver circuit 101. The driver circuit 101 transfers power between the battery 102 and the motor 17.

[0037] The two wheel speed sensors 103 are a wheel speed sensor 103L for the left rear wheel 3RL and a wheel speed sensor 103R for the right rear wheel 3RR. Each wheel speed sensor 103 measures the rotation speed of the corresponding rear wheel 3R.

[0038] The battery 102 is a secondary battery such as a lithium ion battery. The battery 102 outputs DC power. The battery 102 is electrically connected to the motor 17 and can exchange power with the motor 17.

[0039] The control device 100 controls the power running operation and the regenerative operation of the motor 17. For example, in the human-powered traveling mode, when the vehicle 1 turns forward, the control device 100 causes the motor 17 provided for the inner rear wheel 3R of the pair of left and right rear wheels 3R ​​to perform regenerative operation using the driving force of the crank pedal device 11A. As a result, the motor 17 provided for the inner rear wheel 3R performs regenerative power generation. Also, during the above turning, the control device 100 supplies the regeneratively generated power to the motor 17 provided for the outer rear wheel 3R of the pair of left and right rear wheels 3R, and drives the outer rear wheel 3R by the motor 17. That is, when the crank pedal device 11A drives the rear wheel 3R, the control device 100 transfers torque between the pair of left and right rear wheels 3R. As a result, a braking force by the regenerative brake acts on the inner rear wheel 3R, and the torque transmitted to the outer rear wheel 3R increases. This optimizes the distribution of torque to the pair of left and right rear wheels 3R, improving the turning performance of the vehicle 1.

[0040] The vehicle 1 can determine whether the vehicle 1 is turning based on the detection results of the pair of left and right wheel speed sensors 103. As an example, the control device 100 determines that the vehicle 1 is turning when there is a difference between the rotation speeds of the pair of left and right rear wheels 3R ​​detected by the pair of left and right wheel speed sensors 103. In addition, the control device 100 determines that the rear wheel 3R having a faster rotation speed detected by the wheel speed sensor 103 is the outside of the turn, and determines that the rear wheel 3R having a slower rotation speed detected by the wheel speed sensor 103 is the inside of the turn.

[0041] In the electric driving mode, the control device 100 supplies electric power from the battery 102 to the pair of left and right motors 17 to power the pair of left and right motors 17. This causes the vehicle 1 to run using the power of the motors 17.

[0042] As described above, the torque vectoring device 35 (vehicle torque vectoring device) of this embodiment is provided on the vehicle 1. The vehicle 1 includes a pair of left and right drive shafts 53, a pair of left and right rear wheels 3R ​​(wheels) that are coupled to the pair of left and right drive shafts 53 and rotate integrally with the pair of left and right drive shafts 53, and a crank pedal device 11A (power device) that drives the rear wheels 3R ​​via the drive shafts 53. The torque vectoring device 35 includes a driven gear 14 (output member), a pair of left and right motors 17, a pair of left and right transmission units 18, and a differential unit 40. The driven gear 14 outputs power from the crank pedal device 11A to the drive shafts 53. The pair of left and right motors 17 are provided corresponding to the pair of left and right rear wheels 3R. The pair of left and right transmission units 18 connect the pair of left and right motors 17 and the pair of left and right drive shafts 53, and transmit torque between the pair of left and right motors 17 and the pair of left and right drive shafts 53. The differential unit 40 enables differential rotation of the pair of left and right drive shafts 53. In the torque vectoring device 35, when the vehicle 1 turns, the motor 17 provided for the inner rear wheel 3R of the pair of left and right rear wheels 3R ​​generates regenerative power using the driving force of the crank pedal device 11A, and the motor 17 provided for the outer rear wheel 3R of the pair of left and right rear wheels 3R ​​drives the outer rear wheel 3R with the regeneratively generated power.

[0043] According to this configuration, when the crank pedal device 11A drives the rear wheels 3R, torque can be transferred between the pair of left and right rear wheels 3R.

[0044] Furthermore, in this embodiment, torque distribution to the pair of rear wheels 3R ​​when the crank pedal device 11A is traveling is performed by the motor 17, which is a drive device for electric traveling. This makes it easier to have a simple configuration for the torque vectoring device 35, thereby making it possible to reduce the size and cost of the torque vectoring device 35.

[0045] The differential portion 40 also includes a pair of left and right one-way clutches 52 that connect the pair of left and right drive shafts 53 and the driven gear 14. When the vehicle 1 moves forward and the rotation speed of the drive shafts 53 is greater than the rotation speed of the driven gear 14, the one-way clutches 52 release the connection between the drive shafts 53 and the driven gear 14.

[0046] According to this configuration, the differential portion 40 can have a relatively simple configuration.

[0047] The output member is a driven gear 14 (driven portion). The crank pedal device 11A transmits power to the driven gear 14 via a drive gear 13 (drive portion) and a chain 15 (connecting member) stretched between the drive gear 13 and the driven gear 14.

[0048] According to such a configuration, since there is no need to use a differential gear for transmitting torque, the configuration of the torque vectoring device 35 can be easily simplified.

[0049] Furthermore, the pair of left and right motors 17 drive the pair of left and right rear wheels 3R ​​when the crank pedal device 11A is stopped.

[0050] According to this configuration, the vehicle 1 can be driven by the power of the pair of left and right motors 17.

[0051] <Second embodiment> FIG. 5 is an exemplary schematic cross-sectional view illustrating a torque vectoring device for a vehicle according to the second embodiment.

[0052] The following mainly describes the differences between the present embodiment and the first embodiment. The vehicle 1 of the present embodiment includes, for example, an internal combustion engine 201 instead of the crank pedal device 11A. The vehicle 1 may be a three-wheeled vehicle as in the first embodiment, or may be a four-wheeled vehicle. The internal combustion engine 201 is an example of a power unit.

[0053] The vehicle 1 of this embodiment also includes a propeller shaft 202, bevel gears 203 and 204, a center drive shaft 205, and a case 206. The bevel gear 204 is an example of an output member.

[0054] Case 206 houses bevel gears 203, 204 and a center drive shaft 205. Case 206 rotatably supports drive shaft 53 via bearing 75. Case 206 also rotatably supports propeller shaft 202 via bearing 211.

[0055] The propeller shaft 202 rotates by the power from the internal combustion engine 201. A bevel gear 203 is provided at the rear end of the propeller shaft 202. The propeller shaft 202 and the bevel gear 203 rotate together.

[0056] The center drive shaft 205 is rotatable about a central rotation axis Ax1 and is connected to a pair of left and right drive shafts 53 via a pair of left and right one-way clutches 52. The center drive shaft 205 is included in the differential portion 40 together with the pair of left and right drive shafts 53, for example.

[0057] A bevel gear 204 is provided on the center drive shaft 205. The bevel gear 204 rotates integrally with the center drive shaft 205. The bevel gear 204 also meshes with the bevel gear 203.

[0058] In the above configuration, power from the internal combustion engine 201 is transmitted to a pair of left and right center drive shafts 205 via the propeller shaft 202, bevel gears 203, 204, and a pair of left and right one-way clutches 52.

[0059] As described above, the vehicle 1 of this embodiment includes the center drive shaft 205. The center drive shaft 205 rotates integrally with the driven gear 14 (output member) and is connected to a pair of left and right drive shafts 53 via a pair of left and right one-way clutches 52.

[0060] According to such a configuration, since there is no need to use a differential gear for transmitting torque, the configuration of the torque vectoring device 35 can be easily simplified.

[0061] <Third embodiment> FIG. 6 is an exemplary schematic cross-sectional view illustrating a torque vectoring device for a vehicle according to the third embodiment.

[0062] As shown in FIG. 6, the present embodiment differs from the second embodiment mainly in that a differential unit 240 is provided in the torque vectoring device 35 instead of the differential unit 40.

[0063] The differential portion 240 is a differential gear. The differential portion 240 has a differential gear case 251, a bevel gear 204, and a gear mechanism portion 253.

[0064] The differential gear case 251 is housed in the case 206. The differential gear case 251 is fixed to the bevel gear 204 and can rotate integrally with the bevel gear 204 around the rotation center axis Ax1. One of the center drive shafts 205 is housed in the bevel gear 204 of this embodiment. The bevel gear 204 is an example of a ring gear.

[0065] The gear mechanism 253 is housed in the differential gear case 251. The gear mechanism 253 has a pinion shaft 256, two pinion gears 257, and two side gears 259. The pinion shaft 256 extends in a direction perpendicular to the rotation center axis Ax1. The pinion shaft 256 is supported by the differential gear case 251. The pinion gear 257 is supported by the pinion shaft 256 so as to be rotatable around the pinion shaft 256. The pinion shaft 256 and the pinion gear 257 rotate integrally with the differential gear case 251 around the rotation center axis Ax1. The two side gears 259 are fixed to the ends of the two drive shafts 53, respectively, and mesh with the two pinion gears 257.

[0066] In the differential portion 240 configured as described above, when the bevel gear 204 rotates due to the power from the internal combustion engine 201, the differential gear case 251 rotates integrally with the pinion shaft 256. The pinion shaft 256 revolves the pinion gear 257 around the rotation central axis Ax1. This causes the side gear 259 to rotate around the rotation central axis Ax1, and the drive shaft 53 to rotate. When a differential rotation occurs in the side gear 259, the pinion gear 257 rotates around the pinion shaft 256 to absorb the differential rotation.

[0067] As described above, in this embodiment, the differential portion 240 is a differential gear.

[0068] With this configuration, for example, the torque vectoring device 35 can be easily adopted in a vehicle 1 provided with an existing differential gear.

[0069] Although the present embodiment and the modified examples have been described above, the above-mentioned embodiment and modified examples are merely examples and are not intended to limit the scope of the invention. The above-mentioned novel embodiment and modified examples can be implemented in various forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. The above-mentioned embodiment and modified examples are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0070] 1. Vehicle 3R…Rear wheel (wheel) 11A…Crank pedal device (power device) 13...Drive gear (drive section) 14...Driven gear (output member, driven part) 15...Chain (connecting member) 17…Motor 18...Transmission section 35...Torque vectoring device (torque vectoring device for vehicles) 40...Differential section 52…One-way clutch 53…Drive shaft 204... Bevel gear (output member) 205…Center drive shaft 240...Differential section

Claims

1. A torque vectoring device for a vehicle is provided on a vehicle including a pair of left and right drive shafts, a pair of left and right wheels coupled to the pair of left and right drive shafts and rotating integrally with the pair of left and right drive shafts, and a power unit that drives the wheels via the drive shafts, an output member that outputs power from the power unit to the drive shaft; a pair of left and right motors provided corresponding to the pair of left and right wheels; a pair of left and right transmission units that connect the pair of left and right motors and the pair of left and right drive shafts and transmit torque between the pair of left and right motors and the pair of left and right drive shafts; a differential unit that enables differential rotation of the pair of left and right drive shafts; Equipped with When the vehicle turns, the motor provided for the wheel on the inside of the pair of left and right wheels regenerates power using the driving force of the power device, and the motor provided for the wheel on the outside of the pair of left and right wheels drives the wheel on the outside of the pair of left and right wheels using the regenerated power. Torque vectoring device for vehicles.

2. the differential portion includes a pair of left and right one-way clutches connecting the pair of left and right drive shafts and the output member, the one-way clutch releases the connection between the drive shaft and the output member when the rotation speed of the drive shaft is higher than the rotation speed of the output member while the vehicle is moving forward.

2. The torque vectoring device for a vehicle according to claim 1.

3. a center drive shaft that rotates integrally with the output member and is connected to the pair of left and right drive shafts via the pair of left and right one-way clutches; 3. The torque vectoring device for a vehicle according to claim 2.

4. the output member is a driven part, The power unit transmits power to the driven part via a driving part and a connecting member that is stretched between the driving part and the driven part.

2. The torque vectoring device for a vehicle according to claim 1.

5. The pair of left and right motors drive the pair of left and right wheels when the power unit is stopped.

2. The torque vectoring device for a vehicle according to claim 1.

Images