CN218751234U

CN218751234U - Motor hub of electric vehicle

Info

Publication number: CN218751234U
Application number: CN202223147444.7U
Authority: CN
Inventors: 徐妙青
Original assignee: Taizhou Luqiao Kaifeng Wheel Factory
Current assignee: Taizhou Luqiao Kaifeng Wheel Factory
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-03-28
Anticipated expiration: 2032-11-25

Abstract

The utility model provides a motor wheel hub of electric motor car, relates to wheel hub structure field, when mainly solving how to guarantee structural strength, promotes production efficiency, including being annular rotor housing and setting up in the rim of rotor housing periphery a rotor housing side is equipped with the apron, locate the bearing frame on the apron, its characterized in that, rotor housing internal perisporium has the annular groove embedded steel ring that links firmly with rotor housing, set up a plurality of screw hole that extends to the steel ring direction on one side of rotor housing, rotor housing's opposite side with the side of apron is connected, just rotor housing, rim and apron are by aluminum alloy integrated into one piece. Motor wheel hub adopts aluminum alloy integrated into one piece to at the embedded steel ring of wheel hub, when reducing the processing degree of difficulty and promoting production efficiency, avoided because later stage joining or welding and the connection problem that leads to.

Description

Motor hub of electric vehicle

Technical Field

The utility model relates to a wheel hub structure field relates to a motor wheel hub of electric motor car.

Background

The electric motor car wide application is in the aspect of daily life transportation trip, and its core component is in-wheel motor, is about to power device, transmission and arresting gear all integrate together to make the outward appearance of electric motor car more small and exquisite pleasing to the eye, in order to satisfy the requirement of intensity and lightweight, consequently split type usually, thereby alleviate in-wheel motor's whole weight through different material combinations, nevertheless owing to adopt split type structure, the easy in-use emergence fracture of the junction of consequently every part.

In order to solve the problems, technical personnel in the field provide a technical scheme, the hub mainly comprises a hub body and a mounting cavity located in the hub body, a mounting opening is formed in one side of the hub body, a metal bearing seat is fixedly mounted on the mounting opening, the hub body is integrally formed by plastic, the hub body is made to be light by integrally forming the hub body by using molding compound, and due to the fact that the molding compound is integrally formed, and the connecting area between a rim in the hub body and a side plate provided with the mounting opening is small, breakage is easy to occur in use, and due to the fact that fixing of a motor is not arranged in the mounting cavity, damage caused by shaking of the hub is easy to occur in the use process of the motor.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a motor wheel hub of electric motor car, the utility model aims to solve the technical problem that: how to improve the strength and improve the production efficiency.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a motor hub of electric motor car, including being annular rotor housing and setting up in the rim of rotor housing periphery, a side is equipped with the apron at rotor housing, locate bearing frame and/or brake rim on the apron, rotor housing internal perisporium has the annular groove, the annular groove embedded have the steel ring that links firmly with rotor housing, set up a plurality of screw hole that extends to the steel ring direction on one side of rotor housing, another side of rotor housing is connected with the side of apron, and rotor housing, rim and apron are by aluminum alloy integrated into one piece.

In this scheme, through setting up annular rotor housing between rim and apron, thereby the joint strength between rim and the apron has been increased, for the convenience of the installation of stator and promote wheel hub's sealing performance, consequently only set up the apron in one side of rotor housing, and link to each other through aluminum alloy integrated into one piece's mode between rotor housing and the apron, for the convenience of the equipment in later stage, consequently, set up the annular groove in the rotor housing, and the steel ring that has magnetism imbeds in the annular groove, under the condition that can guarantee joint strength, through adopting the mode of linking firmly in the annular groove, the process that the later stage need go the installation steel ring once more has been reduced, and through install the steel ring additional in aluminum alloy wheel hub, thereby motor wheel hub's structural strength's colleague has been promoted, the step of processing is reduced in order to promote production efficiency.

In the above in-wheel motor, the inner peripheral surface of the cover side is flush with the inner peripheral surface of the rotor case.

In the above-described in-wheel motor, the connection plate of the cover plate is disposed obliquely.

In the hub motor, the steel ring is provided with a plurality of holes or grooves fixedly connected with the rotor shell.

In the above hub motor, the bearing housing and the cover plate are integrally formed. Because the bearing seat and the cover plate are integrally formed, the reduction of the structural strength caused by the split of the bearing seat and the cover plate is reduced.

In the hub motor, the depth of the annular groove is greater than the thickness of the steel ring. Thereby guarantee that the steel ring can be located the annular groove all the time.

In the hub motor, the threaded hole is positioned between the steel ring and the rim or below the steel ring. Because the screw hole is located between steel ring and the wheel hub, when processing, compared with the tapping at the steel ring position, it is more convenient, and the processing degree of difficulty is lower.

Compared with the prior art, the utility model has the advantages of it is following:

1. this scheme is through adopting aluminum alloy integrated into one piece's mode, avoided because molding compound becomes fragile and leads to the problem of inefficacy under long-time use, the side of apron links to each other with the lateral wall of rotor housing upper annular groove, and link to each other rim and rotor housing, thereby the indirect area of connection between rim and the apron that has increaseed, and through the superimposed mode of both sides limit between rotor housing and apron, thereby consolidate, the joint strength between rotor housing and the apron has been promoted, through set up the steel ring in rotor housing's annular groove, thereby when promoting structural strength, through at inside built-in steel ring, thereby the processing cost when placing in the later stage has been reduced, and because set up a plurality of hole that is used for placing on the steel ring, make the steel ring when wheel hub is fixed, possess great area of contact, in order to reduce the intensity of connecting.

2. For making things convenient for the later stage installation, consequently set up the screw hole that extends to the steel ring direction on rotor housing to set up the screw hole between rim and the steel ring that is located rotor housing, thereby when increasing joint strength through the area of increase and rotor housing, avoided because both materials are different and the processing technology and the increase of machining error that lead to, promoted production efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the second embodiment;

FIG. 4 is a partial enlarged view of still another structure of the second embodiment;

FIG. 5 is a partial enlarged view of still another structure of the second embodiment;

in the figure: 1. a rotor case; 1a, an annular groove; 1b, steel rings; 1c, a threaded hole; 2. a rim; 3. a cover plate; 3a, a bearing seat; 3b, a brake drum; 3c, connecting plates.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-2, a motor hub of an electric vehicle, including being annular rotor housing 1 and setting up in rim 2 of rotor housing 1 periphery, be equipped with apron 3 on 1 side of rotor housing, locate bearing frame 3a on the

apron

3, 1 internal perisporium of rotor housing has annular groove 1a, annular groove 1a embedded have with rotor housing 1 fixed connection's steel ring 1b, set up a plurality of screw hole 1c that extends to steel ring 1b direction on one side of rotor housing 1, another side of rotor housing 1 is connected with the side of apron 3, and the inner peripheral surface of 3 sides of apron is parallel and level with rotor housing 1's inner peripheral surface, and rotor housing 1, rim 2 and apron 3 are by aluminum alloy integrated into one piece.

Because this scheme adopts aluminum alloy punching press or casting integrated into one piece, for the convenience drawing of patterns, should and lean out 5 degrees with the lateral wall on connecting plate 3c on the apron 3 and the rim 2, and in adopting casting to add earlier steel ring 1b and placing the mould with man-hour, pour the aluminum alloy after will smelting again and get into in the mould, because be equipped with a plurality of holes or groove on the steel ring 1b, thereby make the aluminum alloy when casting, the molten aluminum can fill to this downthehole, in order to strengthen steel ring 1b and wheel hub's area of contact. The hub is divided into a rotor housing 1 for fixing a steel ring 1b, a rim 2 for mounting a tire, and a cover plate 3 for facilitating sealing, fixing, and supporting the rim 2 and the rotor housing 1 without deformation according to functions, and in order to prevent the rotor housing 1 from being broken between the cover plates 3, the side of the cover plate 3 is connected to the side wall of the rotor housing 1, and the inner circumferential surface of the side of the cover plate 3 is flush with the inner circumferential surface of the rotor housing 1, thereby increasing the area of the connection between the cover plate 3 and the rotor housing 1, and compared with split assembly, due to integral molding, the problems of failure of the hub motor due to aging, brittleness or rusting of a connecting part after long-time use and breakage of a welding point position due to welding connection are avoided. Owing to set up annular groove 1a in rotor housing 1 to place steel ring 1b in annular groove 1a, thereby when having avoided leading to the problem that wheel hub later stage steel ring 1b is difficult to the installation owing to adopt integral type structure, owing to just put into steel ring 1b with man-hour, thereby promote the holistic structural strength of wheel hub. When promoting production efficiency, through consolidate at each connection position and place steel ring 1b in rotor housing 1's annular groove 1a, thereby promote structural strength, in order to further fix steel ring 1b, consequently set up a plurality of screw hole 1c to steel ring 1b direction extension on rotor housing 1, and set up screw hole 1c with between steel ring 1b and the wheel hub, thereby when avoiding reprocessing, the bolt that uses for connecting possesses more area of contact, with promotion joint strength, and do not destroy steel ring 1 b's structural strength.

Example two

As shown in fig. 3 to 5, the basic structure is the same as the first embodiment, but the difference is that:

the main difference in figure 3 is that the bearing support 3a is integrally formed with the brake drum 3b and the cover plate 3 and that the outer side walls of the brake drum 3b and the bearing support 3a are provided with a slope to facilitate demoulding.

The main difference in fig. 4 is that the depth of the annular groove 1a is greater than the thickness of the steel ring 1b, and the threaded hole 1c opens in a position parallel to the steel ring 1b, so that the conical surface of the contact screw or bolt further fixes the steel ring 1 b.

The main difference in fig. 5 is that the threaded hole 1c is located below the steel ring 1b and the depth of the annular groove 1a is greater than the thickness of the steel ring 1 b.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although 1, the rotor housing is used more herein; 1a, an annular groove; 1b, steel rings; 1c, a threaded hole; 2. a rim; 3. a cover plate; 3a, a bearing seat; 3b, a brake drum; 3c, webs, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a motor hub of electric motor car, is including being annular rotor housing (1) and setting up in rim (2) of rotor housing (1) periphery rotor housing (1) one side is equipped with apron (3), locate bearing frame (3 a) and/or brake drum (3 b) on apron (3), its characterized in that, rotor housing (1) internal perisporium has annular groove (1 a), annular groove (1 a) embedded steel ring (1 b) that links firmly with rotor housing (1), set up a plurality of screw hole (1 c) that extend to steel ring (1 b) direction on one side of rotor housing (1), the opposite side of rotor housing (1) with the side of apron (3) is connected, just rotor housing (1), rim (2) and apron (3) are by aluminum alloy integrated into one piece.

2. The motor hub of an electric vehicle as claimed in claim 1, characterized in that the inner circumference of the cover plate (3) is flush with the inner circumference of the rotor housing (1).

3. The motor hub of an electric vehicle according to claim 1 or 2, characterized in that the connecting plate (3 c) of the cover plate (3) is arranged obliquely.

4. The motor hub of the electric vehicle as claimed in claim 1, wherein the steel ring (1 b) is provided with a plurality of holes or slots fixedly connected with the rotor housing (1).

5. The motor hub of an electric vehicle according to claim 1, characterized in that the bearing seat (3 a) and/or the brake drum (3 b) are integrally formed with the cover plate (3).

6. The motor hub of an electric vehicle according to claim 1, characterized in that the depth of the annular groove (1 a) is greater than or equal to the thickness of the steel ring (1 b).

7. The motor hub of an electric vehicle as claimed in claim 1 or 6, characterized in that the threaded hole (1 c) is located between the steel ring (1 b) and the rim (2) or below the steel ring (1 b).

8. The motor hub of an electric vehicle as claimed in claim 1, wherein the side walls of the rim (2) are outwardly inclined at an angle of 1-10 °.