CN218929188U

CN218929188U - Hub motor

Info

Publication number: CN218929188U
Application number: CN202223289285.4U
Authority: CN
Inventors: 袁新涛; 胡均奕; 翁晓明; 滕若男
Original assignee: Nanjing Bangqi Automatic Transmission Co ltd
Current assignee: Nanjing Bangqi Automatic Transmission Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-04-28
Anticipated expiration: 2032-12-08

Abstract

The utility model discloses a hub motor, which comprises a speed reducer, a driving motor and a shell, wherein the driving motor comprises a rotating shaft, a rotor arranged on the rotating shaft and a stator matched with the rotor, the speed reducer, the rotor and the stator are positioned in the shell, and the speed reducer comprises a planet carrier, a gear ring, a sun wheel arranged on the rotating shaft and a planet wheel which is arranged on the planet carrier and meshed with the sun wheel and the gear ring. According to the hub motor, the driving motor and the speed reducer are integrated in the shell, the integration level is high, the motor and the speed reducer are in oil-sharing lubrication design, the motor cooling lubrication system adopts splash lubrication design, an active oil pumping system is omitted, and the complexity of an oil cooling system can be reduced.

Description

Hub motor

Technical Field

The present utility model relates to a hub motor.

Background

As a main development direction of the automobile industry in recent years, a pure electric automobile is concerned by customers in a driving form and a transmission system structure; under the development background of high power density of the electric drive system of the new energy automobile, the design of the power system of the automobile becomes a key design link, new requirements are also put forward for the structural distribution of the power system, and more attention is paid to the matching of the driving form and the spatial arrangement of the whole automobile.

At present, the main new energy automobile driving system is distributed along the traditional fuel automobile power system, and an electric power assembly front-end drive or front-end rear-drive structure is adopted, so that the traditional mechanical traditional system is inevitably arranged, the chassis transmission structure is complex, the mechanical transmission unit is increased, the chassis and the whole automobile space cannot be optimized to the greatest extent, the probability of mechanical failure is increased, and even the problems of chassis adjustment and the like are brought.

The hub motor of the existing new energy automobile needs to be in oil pumping with an active oil pumping system, oil is provided for the motor and the speed reducer through the active oil pumping system, the motor and the speed reducer are lubricated and cooled, the system structure is complex, and the integration level is low. As disclosed in patent document CN210111791U, there is a problem of high structural complexity in a hub motor lubrication and cooling system with a built-in speed reducing mechanism.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a hub motor, and aims to improve the integration level.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the hub motor comprises a speed reducer, a driving motor and a shell, wherein the driving motor comprises a rotating shaft, a rotor arranged on the rotating shaft and a stator matched with the rotor, the speed reducer, the rotor and the stator are positioned inside the shell, and the speed reducer comprises a planet carrier, a gear ring, a sun gear arranged on the rotating shaft and a planet wheel arranged on the planet carrier and meshed with the sun gear and the gear ring.

The stator is fixed on the casing.

The gear ring is fixed on the shell.

The planet carrier is connected with a flange, and the flange is connected with a hub.

The housing is connected to the brake caliper, the housing being mounted on the planet carrier by means of a first bearing 6 and the housing being mounted on the spindle by means of a second bearing 14.

The planet carrier is mounted on the rotating shaft through a third bearing 9 and a fourth bearing 18, and the second bearing 14, the fourth bearing 18 and the third bearing are sequentially arranged along the axial direction of the rotating shaft.

The first bearing is fixed on the shell through a pressing plate, and an oil seal is arranged in the pressing plate.

According to the hub motor, the driving motor and the speed reducer are integrated in the shell, the integration level is high, the motor and the speed reducer are in oil-sharing lubrication design, the motor cooling lubrication system adopts splash lubrication design, an active oil pumping system is omitted, and the complexity of an oil cooling system can be reduced.

Drawings

The present specification includes the following drawings, the contents of which are respectively:

FIG. 1 is a cross-sectional view of a hub motor of the present utility model;

marked in the figure as: 1. a hub; 2. a brake caliper; 3. a brake disc; 4. a pressing plate; 5. an oil seal; 6. a first bearing; 7. a flange; 8. a planet carrier; 9. a third bearing; 10. a housing; 11. a planet wheel; 12. a gear ring; 13. a sun gear; 14. a second bearing; 15. a rotating shaft; 16. a rotor; 17. a stator; 18. a fourth bearing; 19. an end cap.

Detailed Description

The following detailed description of the embodiments of the utility model, given by way of example only, is presented in the accompanying drawings to aid in a more complete, accurate and thorough understanding of the concepts and aspects of the utility model, and to aid in its practice, by those skilled in the art.

In the following embodiments, the "first", "second", "third" and "fourth" do not represent an absolute distinction between structures and/or functions, and do not represent a sequential order of execution, but are merely for convenience of description.

As shown in fig. 1, the utility model provides a hub motor, which comprises a hub 1, a brake caliper 2, a brake disc 3, a speed reducer, a driving motor and a casing 10, wherein the driving motor comprises a rotating shaft 15, a rotor 16 arranged on the rotating shaft 15 and a stator 17 matched with the rotor 16, the speed reducer, the rotor 16 and the stator 17 are positioned in the casing 10, and the speed reducer comprises a planet carrier 8, a gear ring 12, a sun gear 13 arranged on the rotating shaft 15 and a planet wheel 11 arranged on the planet carrier 8 and meshed with the sun gear 13 and the gear ring 12.

Specifically, as shown in fig. 1, the driving motor and the speed reducer are integrated in the casing 10, the stator 17 is fixed in the casing 10, the rotor 16 is fixed on the rotating shaft 15, the rotating shaft 15 and the sun gear 13 are coaxially and fixedly connected, and the gear ring 12 is fixed on the casing 10. The planet wheel 11 is rotatably arranged on the planet carrier 8, the planet wheel 11 is provided with a plurality of planet wheels, the sun wheel 13 drives the planet wheel 11 to rotate, the planet wheel 11 drives the planet carrier 8 to rotate, the planet carrier 8 is fixedly connected with the flange 6 in a coaxial mode, and the flange 6 is fixedly connected with the hub 1 in a coaxial mode. The flange 6 drives the hub 1 to rotate, the flange 6 is connected with the brake disc 3, and the brake caliper 2 is connected with the casing 10. In the working process of the hub motor, the rotor 16 rotates to drive the rotating shaft 15 to synchronously rotate, the rotating shaft 15 drives the speed reducer, and lubricating oil of the speed reducer splashes to the stator 17 and the rotor 16 of the driving motor to finish cooling of the driving motor.

As shown in fig. 1, the housing 10 is connected to the brake caliper 2, the housing 10 is mounted on the carrier 8 through the first bearing 6, and the housing 10 is mounted on the rotating shaft 15 through the second bearing 14. The planet carrier 8 is installed on one side of the shell 10 through the first bearing 6, the closed side of the shell 10 is in a closed state, the planet carrier 8 and the first bearing 6 are limited in the axial direction, the first bearing 6 is fixed on the shell 10 through the pressing plate 4, an oil seal 5 is arranged in the pressing plate 4, the planet carrier 8 can rotate in the shell 10, and the planet carrier 8 and the rotating shaft 15 can rotate relatively. The planet carrier 8 is mounted on the rotating shaft 15 through a third bearing 9 and a fourth bearing 18, and the second bearing 14, the fourth bearing 18 and the third bearing are sequentially arranged along the axial direction of the rotating shaft 15. The outer rings of the third bearing 9 and the fourth bearing 18 are supported on the carrier 8, the inner rings of the third bearing 9 and the fourth bearing 18 act on the rotating shaft 15, the outer ring of the second bearing 14 acts on the end cover 19, the inner ring of the second bearing 14 acts on the rotating shaft 15, the end cover 19 is mounted on the opening side of the casing 10, and the end cover 19 seals the opening of the opening side of the casing 10.

The hub motor with the structure adopts the structure that the stator and the rotor of the motor are highly integrated with the planetary gear reducer, so that the motor and the reducer share oil lubrication design, meanwhile, a motor cooling lubrication system adopts splash lubrication design, an active oil pumping system is omitted, and the complexity of an oil cooling system is reduced. The oil-cooled reduction hub motor with the structure realizes the dispersed arrangement of the whole vehicle power wheel, realizes the design of low rotation speed and large torque of the wheel, can meet the driving requirement of the wheel of the vehicle, and realizes the independent driving and high maneuvering performance requirement of the wheel of the vehicle.

The utility model is described above by way of example with reference to the accompanying drawings. It will be clear that the utility model is not limited to the embodiments described above. As long as various insubstantial improvements are made using the method concepts and technical solutions of the present utility model; or the utility model is not improved, and the conception and the technical scheme are directly applied to other occasions and are all within the protection scope of the utility model.

Claims

1. Hub motor, including reduction gear and driving motor, its characterized in that: the motor comprises a motor shell, wherein the motor shell comprises a rotating shaft, a rotor arranged on the rotating shaft and a stator matched with the rotor, the speed reducer, the rotor and the stator are positioned inside the motor shell, and the speed reducer comprises a planet carrier, a gear ring, a sun gear arranged on the rotating shaft and a planet wheel arranged on the planet carrier and meshed with the sun gear and the gear ring.

2. The in-wheel motor according to claim 1, wherein: the stator is fixed on the casing.

3. The in-wheel motor according to claim 1, wherein: the gear ring is fixed on the shell.

4. A hub motor according to any one of claims 1 to 3, wherein: the planet carrier is connected with a flange, and the flange is connected with a hub.

5. The in-wheel motor according to claim 4, wherein: the casing is connected with the brake caliper, the casing is installed on the planet carrier through a first bearing, and the casing is installed on the rotating shaft through a second bearing.

6. The in-wheel motor according to claim 5, wherein: the planet carrier is arranged on the rotating shaft through a third bearing and a fourth bearing, and the second bearing, the fourth bearing and the third bearing are sequentially arranged along the axial direction of the rotating shaft.

7. The in-wheel motor according to claim 5, wherein: the first bearing is fixed on the shell through a pressing plate, and an oil seal is arranged in the pressing plate.