CN216451248U - Hub motor with output of planet carrier - Google Patents
Hub motor with output of planet carrier Download PDFInfo
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- CN216451248U CN216451248U CN202220000395.5U CN202220000395U CN216451248U CN 216451248 U CN216451248 U CN 216451248U CN 202220000395 U CN202220000395 U CN 202220000395U CN 216451248 U CN216451248 U CN 216451248U
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- motor
- planet carrier
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Abstract
The utility model discloses a hub motor output by a planet carrier, which comprises wheels, an inner rotor motor consisting of a motor rotor and a motor stator, a planetary gear speed reducing mechanism consisting of a sun wheel shaft, a gear ring, a planet wheel and the planet carrier, a hub bearing, a flange plate and a brake disc, wherein the motor stator is fixed on a motor shell, the motor rotor is fixedly connected with the sun wheel shaft to transmit power, the sun wheel on the sun wheel shaft is meshed with the planet wheel, the planet carrier is connected with the flange plate through a spline to output power, the gear ring is fixedly connected on the motor shell, the planet carrier is supported by the hub bearing, and the brake disc is fixedly connected on the sun wheel shaft. The hub motor has the characteristics of compact and reliable structure, reasonable layout and transmission path and high transmission efficiency, and realizes the light weight of the hub motor.
Description
Technical Field
The utility model belongs to the field of integrated electric wheels of automobile distributed driving systems, and particularly relates to a hub motor output by a planet carrier.
Background
The structure arrangement method of the pure electric vehicle is various and flexible; according to different arrangement modes of the driving motors, the driving modes can be divided into two modes of motor central driving and distributed motor driving. The motor central driving means that the central motor replaces the engine of the traditional fuel automobile, and the power transmission mode of the central motor is also the same as that of the traditional fuel automobile. The distributed motor drive is that the motor is directly arranged near or in the wheel, so that a complex transmission system is omitted, and independent, quick and accurate transmission and control can be realized. The distributed driving electric automobile mainly has two forms of wheel edge motor driving and wheel hub motor driving. Compared with wheel-side motor driving, the hub motor is more compact in structure and is the key direction for research of various scientific research institutions at present.
The driving mode of the hub motor can be divided into a direct driving mode and a speed reduction driving mode. The direct drive of the hub motor means that no speed reduction device is arranged between the hub motor and the wheel, and the hub motor and the wheel are directly connected to transmit power. Therefore, the direct drive mode generally adopts a low-speed outer rotor motor, the highest rotating speed is generally 1000-1500 r/min, and the direct drive motor has the advantages of simple structure and higher power transmission efficiency, but also has the defects of smaller motor efficiency peak value area and small output torque. The hub motor speed reduction driving means that a speed reduction device is additionally arranged between the hub motor and a wheel, and power is transmitted to the wheel through the speed reduction device. Therefore, a high-speed inner rotor motor is usually adopted in a speed reduction driving mode, the specific power is high, high torque is provided through speed reduction and torque increase, and the weight is light. At present, the two types of hub motors are researched and developed, according to respective characteristics, the hub motor driven by speed reduction can be applied to the vehicle types with larger torque requirements such as city buses, and the hub motor driven directly is more applied to light and small electric vehicles. However, the current in-wheel motor driving mode has some technical difficulties, and the unsprung mass of the automobile is increased due to the addition of the motor, the reducer and the like in the wheel, so that the smoothness and the operating stability of the automobile are deteriorated, and the light weight is a breakthrough for solving the problems.
SUMMERY OF THE UTILITY MODEL
The utility model mainly provides a hub motor output by a planet carrier, wherein a high-speed inner rotor motor, a planetary gear reducer and a brake are integrated in a limited rim space, and a larger torque is provided by reducing speed and increasing torque, so that the hub motor has higher torque density, realizes the light weight of the hub motor well, and can be applied to an electric automobile driven by the hub motor.
In order to solve the technical problem, the technical scheme of the utility model is that: an inner rotor motor output by a planet carrier comprises wheels, an inner rotor motor consisting of a motor rotor and a motor stator, a planetary gear speed reducing mechanism consisting of a sun gear shaft, a gear ring, a planetary gear and the planet carrier, a hub bearing, a flange plate and a brake disc, wherein the motor stator is fixed on a motor shell; the weight of the vehicle body is transmitted to the vehicle wheel by the motor shell through the hub bearing and the flange plate, and the ground impact load is borne by the hub bearing.
Furthermore, one end of the sun wheel shaft is fixed on the motor end cover through a four-point contact ball bearing, the other end of the sun wheel shaft is fixed in the planet carrier through a deep groove ball bearing, so that the stability of the sun wheel shaft is enhanced, and the end face of the motor end cover has certain taper.
The motor shell is provided with a motor shell, and the motor shell is connected with the motor shell in a threaded mode.
Further, the planet carrier is axially positioned by a round nut.
The brake disc is arranged at the leftmost end of the in-wheel motor, and as it is installed at the torque input end, the torque that needs to be provided when the brake disc brakes becomes smaller, so that the size of the brake disc can be reduced. The motor stator is fixedly connected to the motor shell, and the motor rotor is connected to the sun gear shaft through a spline. The gear ring is fixed on the motor shell, and the planet wheel is connected with the planet carrier through the planet wheel shaft. The hub bearing is installed on motor casing, and the shaft shoulder and the motor casing location are passed through to the left side of hub bearing, and the right side carries out axial positioning through threaded sleeve and flange dish, and the planet carrier is supported by the hub bearing. The flange plate is connected with the planet carrier through a spline and is axially positioned through a round nut. The screw rod on the flange plate is connected with the hub through a round nut. The planet carrier and the sun wheel shaft are designed to be hollow on the premise of keeping the strength requirements of the planet carrier and the sun wheel shaft to reduce the weight of the planet carrier and the sun wheel shaft.
The speed reducer is a planetary gear speed reducing mechanism consisting of a sun gear shaft, a gear ring, planetary gears and a planet carrier, the planetary gear speed reducing mechanism comprises three planetary gears, power is input by the sun gear shaft, and the planet carrier outputs power.
In conclusion, the planetary gear speed reducer is additionally arranged between the hub motor and the wheel, can provide larger torque through speed reduction and torque increase, has the characteristics of compact and reliable structure, reasonable layout and transmission path and high transmission efficiency, and realizes the light weight of the hub motor.
Drawings
FIG. 1 is a schematic diagram of an in-wheel motor with a planet carrier output.
Fig. 2 is a planetary gear train engagement schematic diagram of a hub motor with planet carrier output.
Reference numerals are as follows: 1 is a sun gear shaft; 2 is a round nut; 3 is a brake disc; 4, a four-point contact ball bearing; 5 is a threaded sleeve; 6 is a deep groove ball bearing; 7 is a motor end cover; 8 is a motor rotor; 9 is a motor stator; 10 is a motor shell; 11 is a wheel; 12 is a gear ring; 13 is a planet wheel; 14 is a planet carrier; 15 is a flange plate; 16 is a round nut; 17 is a hub bearing; 18 is a threaded sleeve; 19 is a planet wheel shaft; and 20 is a needle bearing.
Detailed Description
The technical solution of the present invention will be fully and clearly described below with reference to the accompanying drawings and embodiments.
As shown in fig. 1 and 2, an in-wheel motor with a planet carrier output comprises: one side of the sun wheel shaft 1 is connected with the motor end cover 7 in a rotating fit mode through a four-point contact ball bearing 4, the other side of the sun wheel shaft is fixed on the planet carrier 14 through a deep groove ball bearing 6, the brake disc 3 is arranged at the leftmost end of the hub motor, and the motor stator 9 is fixedly connected to the motor shell 10. The motor rotor 8 is connected to the sun gear shaft 1 through a spline, the left side of the motor rotor 8 is positioned by the sleeve, and the right side of the motor rotor 8 is axially positioned and stabilized by the shaft shoulder of the sun gear shaft 1. The gear ring 12 is fixed on the motor shell 10, the planet gears 13 are connected with the planet carrier 14 through a planet gear shaft 19, and the planet gears 13 are respectively meshed with the sun gear and the gear ring 12 on the sun gear shaft 1 for transmission. A hub bearing 17 is mounted on the motor housing 10, the hub bearing 17 being positioned on the left side by a shoulder and the motor housing 10, on the right side by a threaded sleeve 18 and a flange 15, the planet carrier 14 being supported by the hub bearing 17. The flange 15 is splined to the planet carrier 14 and is axially positioned by a round nut 16. The screw rod on the flange 15 is connected with the hub through a round nut for transmission. Sufficient space is left inside the motor housing 10 to enable the in-wheel motor output by the planet carrier 14 to be connected to the vehicle suspension.
The transmission route of the hub motor output by the planet carrier is shown in fig. 1, a motor rotor 8 rotates to transmit torque to a sun gear shaft 1, a sun gear on the sun gear shaft 1 is in meshing transmission with a planet gear 13 and transmits power to a planet carrier 14 under the action of a gear ring 12, the planet carrier 14 transmits the power to a flange plate 15 through a spline, a screw on the flange plate 15 is connected with the hub through a round nut, and the power is output to a wheel 11.
The reducer of the hub motor output by the planet carrier is a planetary gear reduction mechanism consisting of a sun gear shaft 1, a gear ring 12, planet gears 13 and a planet carrier 14, the planetary gear reduction mechanism comprises three planet gears 13, power is input by the sun gear shaft 1, and the planet carrier 14 outputs the power.
The in-wheel motor speed reduction driving means that a speed reduction device is additionally arranged between the in-wheel motor and a wheel, power is transmitted to the wheel 11 through the speed reduction device, high specific power is achieved, and high torque is provided through speed reduction and torque increase on the premise of controlling quality. The hub motor output by the planet carrier has the advantages of compact and reliable structure, reasonable layout and transmission path, proper cost, stress meeting requirements and high transmission efficiency, and can well realize the light weight of the hub motor.
It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (4)
1. A hub motor output by a planet carrier comprises a wheel (11), an inner rotor motor consisting of a motor rotor (8) and a motor stator (9), a planetary gear speed reducing mechanism consisting of a sun gear shaft (1), a gear ring (12), a planetary gear (13) and the planet carrier (14), a hub bearing (17), a flange plate (15) and a brake disc (3), the brake device is characterized in that a motor stator (9) is fixed on a motor shell (10), a motor rotor (8) is fixedly connected with a sun wheel shaft (1) to transmit power, a sun wheel on the sun wheel shaft (1) is meshed with a planet wheel, a planet carrier (14) is in splined connection with a flange plate (15) to output power, a gear ring (12) is fixedly connected on the motor shell (10), the planet carrier (14) is supported by a hub bearing (17), and a brake disc (3) is fixedly connected on the sun wheel shaft (1); the weight of the vehicle body is transmitted to the wheel (11) by the motor shell (10) through the hub bearing (17) and the flange plate (15), and the ground impact load is borne by the hub bearing (17).
2. The planet carrier output in-wheel motor according to claim 1, characterized in that the sun wheel shaft (1) is fixed on the motor end cover (7) by a four-point contact ball bearing (4) at one end and fixed inside the planet carrier (14) by a deep groove ball bearing (6) at the other end.
3. The planet-carrier output in-wheel motor according to claim 1, further comprising a threaded sleeve (18), wherein the threaded sleeve (18) is in threaded connection with the motor housing (10) to axially position the hub bearing (17).
4. Planet carrier output in-wheel motor according to claim 1, characterized in that the planet carrier (14) is axially positioned by a round nut (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220000395.5U CN216451248U (en) | 2022-01-03 | 2022-01-03 | Hub motor with output of planet carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220000395.5U CN216451248U (en) | 2022-01-03 | 2022-01-03 | Hub motor with output of planet carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216451248U true CN216451248U (en) | 2022-05-06 |
Family
ID=81378388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220000395.5U Active CN216451248U (en) | 2022-01-03 | 2022-01-03 | Hub motor with output of planet carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216451248U (en) |
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2022
- 2022-01-03 CN CN202220000395.5U patent/CN216451248U/en active Active
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