CN215186255U

CN215186255U - Wheel hub and wheel hub motor for electric vehicle

Info

Publication number: CN215186255U
Application number: CN202121186679.XU
Authority: CN
Inventors: 王加许; 王健; 唐敏
Original assignee: Jinyuxing Electromechanical Technology Zhejiang Co ltd
Current assignee: Jinyuxing Electromechanical Technology Zhejiang Co ltd
Priority date: 2021-05-29
Filing date: 2021-05-29
Publication date: 2021-12-14
Anticipated expiration: 2031-05-29

Abstract

The utility model relates to a wheel hub and in-wheel motor for electric motor car, including rim and magnetic ring, the both sides of rim inner circle all are provided with inside convex first locating plate, two first locating plate with form the mounting groove between the inner circle of rim, the magnetic ring is located in the mounting groove, two all system has a plurality of screw holes on the first locating plate, two screw hole on the first locating plate sets up relatively, the tank bottom system of mounting groove have with the screw groove of screw hole intercommunication. Compared with the prior art, the screw hole in the utility model is positioned on the rim, the radial thickness of the magnetic conduction ring is reduced, the two first positioning plates not only have the positioning function for the installation of the magnetic conduction ring, but also reduce the axial length of the magnetic conduction ring, thereby further reducing the weight of the magnetic conduction ring; the electric bicycle is wide in application range and suitable for most electric bicycle models, including electric bicycles, electric motorcycles, electric automobiles, electric scooters and the like.

Description

Wheel hub and wheel hub motor for electric vehicle

Technical Field

The utility model relates to a wheel hub and wheel hub motor for electric motor car belongs to electric motor car motor technical field.

Background

The electric vehicle comprises an electric bicycle, an electric motorcycle, an electric automobile, an electric scooter and the like, and the electric vehicle is used as a new energy vehicle, so that the electric vehicle meets the requirement of a civilian travel tool for the majority of citizens due to a plurality of characteristics of economy, environmental protection, fashion and the like. With the release of the new national standard GB17761-2018 safety technical Specification for electric bicycles, the terms in the whole text are mandatory standards. The key clause requires that the weight of the whole vehicle is not more than 55KG, and therefore the requirement on light weight design of the whole vehicle is extremely urgent.

However, the hub used by the hub motor of the current electric vehicle has the following disadvantages: the end face of the magnetic conduction ring on the hub is provided with a plurality of fastening screw holes, the fastening screw holes are used for mounting the motor end cover, in order to ensure that the fastening screw holes on the end face of the magnetic conduction ring have enough space and strength, the thickness of the magnetic conduction ring is designed according to the maximum size requirement, the weight of the magnetic conduction ring is heavier due to the large wall thickness, the material consumption is increased, and the iron processing working hour and precision are not as easy as those of low-density alloy metal; in addition, the thick and heavy iron ring of the wheel hub magnetic conduction ring also promotes the weight of the motor assembly to be higher.

Application number 2018116081168 discloses a motor wheel hub for lightweight electric motor car, wherein is provided with the screw hole that is used for installing the motor end cover on wheel hub's the locking portion, has reduced the thickness of magnetic ring iron ring. However, in order to meet the positioning requirement of the magnetic conductive rings in the die casting process of the rim upper die, the magnetic conductive rings still have a larger weight proportion.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the shortcoming of prior art, provide a motor wheel hub for electric motor car of weight reduction.

For realizing the purpose the utility model adopts the technical proposal that:

the utility model provides a wheel hub for electric motor car, includes rim and magnetic ring, the both sides of rim inner circle all are provided with inside convex first locating plate, two first locating plate with form the mounting groove between the inner circle of rim, the magnetic ring is located in the mounting groove, two all system has a plurality of screw holes on the first locating plate, two screw holes on the first locating plate set up relatively, the tank bottom system of mounting groove have with the screw groove of screw hole intercommunication.

As a further optimization of the above technical solution: the tank bottom system of mounting groove has the round second locating plate, the system has the round constant head tank on the magnetic conduction ring, the second locating plate is located the constant head tank, the screw groove is located the both sides of second locating plate.

As a further optimization of the above technical solution: the rim comprises a rim outer ring, a rim inner ring and a connecting block for connecting the rim outer ring and the rim inner ring, and the first positioning plates are positioned on two sides of the rim inner ring.

As a further optimization of the above technical solution: the connecting block is arched and is arranged in a hollow mode.

As a further optimization of the above technical solution: the magnetic conduction ring is made of iron, and the rim is made of aluminum.

The hub motor with the hub for the electric vehicle comprises a stator, a rotor and a connecting shaft, wherein the connecting shaft penetrates through the stator, the rotor, the rim and the magnetic conduction ring, the stator is fixedly connected with the connecting shaft, the rotor can rotate around the connecting shaft, motor end covers are arranged on two sides of the rim, a bearing and an oil seal are arranged at the center of each motor end cover, the connecting shaft penetrates through the bearing, the oil seal and the motor end covers, screws penetrate through the motor end covers and the screw holes and are fixed in the screw grooves, and therefore the motor end covers are installed on the rim.

Compared with the prior art, the screw hole in the utility model is positioned on the rim, the radial thickness of the magnetic conduction ring is reduced, the two first positioning plates not only have the positioning function for the installation of the magnetic conduction ring, but also reduce the axial length of the magnetic conduction ring, thereby further reducing the weight of the magnetic conduction ring; the positioning groove is matched with the second positioning plate, so that the positioning effect on the installation of the magnetic conduction rings is also realized, the positioning requirement of the magnetic conduction rings in the die casting process of the die on the rim is met, the situation that the magnetic conduction rings shake in the operation process of the hub is prevented, and the weight of the magnetic conduction rings is further reduced by the positioning groove; the electric bicycle is wide in application range and suitable for most electric bicycle models, including electric bicycles, electric motorcycles, electric automobiles, electric scooters and the like.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the three-dimensional structure of the middle magnetic ring of the present invention.

Fig. 3 is a schematic perspective view of the rim of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description. As shown in fig. 1 to 3, a wheel hub for an electric vehicle includes a rim 1 and a magnetic conductive ring 2, where the rim 1 includes a rim outer ring 11, a rim inner ring 12, and a connecting block 13 connecting the rim outer ring 11 and the rim inner ring 12, and in this embodiment, the rim outer ring 11, the rim inner ring 12, and the connecting block 13 are integrally formed. The two sides of the rim inner ring 12 are provided with first positioning plates 14 protruding inwards, a mounting groove 15 is formed between the two first positioning plates 14 and the inner ring of the rim inner ring 12, and a circle of second positioning plates 16 is arranged at the bottom of the mounting groove 15. A plurality of screw holes 17 are formed in the two first positioning plates 14, the screw holes 17 in the two first positioning plates 14 are arranged oppositely, a plurality of screw grooves 18 are formed in two sides of the second positioning plate 16, and the screw holes 17 are communicated with the screw grooves 18. The magnetic conductive ring 2 is provided with a circle of positioning grooves 21, the magnetic conductive ring 2 is positioned in the mounting groove 15, and the second positioning plate 16 is positioned in the positioning grooves 21. In this embodiment, the magnetic conductive ring 2 is made of iron, the rim 1 is made of aluminum, and the density of iron is 7.9 × 10³kg/m³The density of aluminum is 2.7X 10³kg/m³The aluminium rim 1 makes the machining of the screw holes 17 easier, more precise and faster. Screw hole 17 is located rim 1, has reduced the radial thickness of magnetic ring 2, and two first locating plates 14 both have played the positioning action to the installation of magnetic ring 2, have reduced the axial length of magnetic ring 2 again, compare with the patent of application number 2018116081168 in the background art, further reduce the weight of magnetic ring 2 to alleviate the weight of wheel hub and motor assembly, accord with the standard of lightweight more. In this embodiment, the magnetic conductive ring 2 is mounted on the rim 1 in a die-casting manner, and the die-casting process requires accurate positioning between the magnetic conductive ring 2 and the rim 1. The positioning groove 21 is matched with the second positioning plate 16 to also play a role in positioning the installation of the magnetic conduction ring 2, so that the positioning requirement of the magnetic conduction ring in the die casting process of the die on the rim is met, the situation that the magnetic conduction ring 2 shakes in the operation process of the hub is prevented, and the weight of the magnetic conduction ring 2 is further reduced by the positioning groove 21.

In the above technical scheme: the connecting block 13 is arched and is arranged in a hollow manner, and in the embodiment, the number of the connecting blocks 13 is 6. The rim outer ring 11 and the rim inner ring 12 in the rim 1 are connected through the hollow connecting block 13, so that the weight of the rim 1 is reduced, and the weight of a wheel hub and a motor assembly is reduced. When the arched connecting block 13 is pressed, the pressure can be dispersed downwards and outwards, so that the wheel rim can bear larger pressure, and the stability and reliability of the structure of the wheel rim 1 are ensured.

The utility model provides an in-wheel motor who has used above-mentioned wheel hub for electric motor car, including stator, rotor and connecting axle, the connecting axle passes the stator, the rotor, rim 1 and magnetic ring 2, stator and connecting axle fixed connection, the rotor can be rotatory round the connecting axle, the both sides of rim 1 are provided with the motor end cover, the center of motor end cover is equipped with bearing and oil blanket, the connecting axle passes bearing, oil blanket and motor end cover, the screw passes motor end cover and screw hole 17 and fixes in screw groove 18, thereby install the motor end cover on rim 1.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, all should fall into the protection scope of the utility model, the technical scheme that the design of this technical field technical personnel according to the utility model can be obtained through logic analysis, reasoning or limited experiment on prior art's basis, all should fall into.

Claims

1. The utility model provides a wheel hub for electric motor car, includes rim (1) and magnetic ring (2), its characterized in that the both sides of rim (1) inner circle all are provided with inside convex first locating plate (14), two first locating plate (14) with form mounting groove (15) between the inner circle of rim (1), magnetic ring (2) are located in mounting groove (15), two all made a plurality of screw holes (17) on first locating plate (14), two screw hole (17) on first locating plate (14) set up relatively, the tank bottom system of mounting groove (15) have with screw groove (18) of screw hole (17) intercommunication.

2. The hub for electric vehicles according to claim 1, wherein the bottom of the mounting groove (15) is formed with a ring of second positioning plate (16), the magnetic conductive ring (2) is formed with a ring of positioning grooves (21), the second positioning plate (16) is located in the positioning grooves (21), and the screw grooves (18) are located on both sides of the second positioning plate (16).

3. A hub for electric vehicles according to claim 1, characterized in that the rim (1) comprises an outer rim ring (11), an inner rim ring (12) and a connecting block (13) connecting the outer rim ring (11) and the inner rim ring (12), the first positioning plate (14) being located on both sides of the inner rim ring (12).

4. A hub for electric vehicles according to claim 3, characterized in that said connecting piece (13) is arched and hollow.

5. A hub for electric vehicles according to claim 1, characterized in that said magnetic ring (2) is made of iron and said rim (1) is made of aluminum.

6. The in-wheel motor using the wheel hub for the electric vehicle according to any one of claims 1 to 5, characterized by comprising a stator, a rotor and a connecting shaft, wherein the connecting shaft passes through the stator, the rotor, the wheel rim (1) and the magnetic conductive ring (2), the stator is fixedly connected with the connecting shaft, the rotor can rotate around the connecting shaft, motor end covers are arranged on two sides of the wheel rim (1), a bearing and an oil seal are arranged in the center of the motor end cover, the connecting shaft passes through the bearing, the oil seal and the motor end cover, and a screw passes through the motor end cover and the screw hole (17) and is fixed in the screw groove (18), so that the motor end cover is mounted on the wheel rim (1).