Magnetic conductive ring of electric vehicle hub

Abstract

The utility model discloses a magnetic conductive ring of an electric vehicle hub, which belongs to the technical field of electric vehicle hub motors and comprises a magnetic conductive ring body (1), the magnetic conductive ring body (1) is cylindrical, two end parts of the magnetic conductive ring body (1) are respectively provided with a first connecting ring (2) and a second connecting ring (3), and the radial thickness of the first connecting ring (2) is equal to that of the second connecting ring (3). The thickness of the first connecting ring (2) is larger than the radial thickness of the magnetic conductive ring body (1), the thickness of the second connecting ring (3) is larger than the radial thickness of the magnetic conductive ring body (1), a first connecting hole (4) is formed in the first connecting ring (2), a second connecting hole (5) is formed in the second connecting ring (3), and the first connecting hole (4) corresponds to the second connecting hole (5). The fixed connection between the magnetic conductive ring and the end cover is realized, the magnetic conductive ring body has a proper radial thickness, the improvement of the output performance of the motor is ensured, and the cost is saved.

Description

Technical Field

[0001] This utility model belongs to the field of electric vehicle wheel hub motor technology, specifically relating to a magnetic ring for electric vehicle wheel hubs that effectively improves motor performance. Background Technology

[0002] The wheel hub structure of an electric vehicle includes a rim, within which a magnetic ring for conducting magnetism is installed. The magnetic ring has threaded connection holes and is connected to an end cap via screws. From the perspective of the wheel hub connection structure, since the commonly used screw size is M4, the radial thickness of the magnetic ring needs to be greater than the screw diameter, i.e., greater than 4mm, to ensure proper opening of the connection holes and the connection strength between the magnetic ring and the end cap. From the perspective of the wheel hub motor's performance, an excessively thick magnetic ring would reduce the internal space of the motor, resulting in a smaller electromagnetic arm and lower output torque. It would also increase the overall weight of the wheel hub, affecting the performance of the electric vehicle. Therefore, the existing wheel hub magnetic ring structure needs to be adjusted to allow for the opening of the connection holes while ensuring motor performance. Utility Model Content

[0003] The purpose of this invention is to overcome the technical problems in the prior art, such as the radial thickness of the magnetic ring being too small, which cannot guarantee the normal opening of the connection hole, and the radial thickness of the magnetic ring being too large, which affects the motor performance. The invention provides a magnetic ring for electric vehicle wheel hubs that can guarantee the normal opening of the connection hole, while reducing weight and cost, and effectively improving motor performance.

[0004] To solve the above-mentioned technical problems, this utility model provides a magnetic guide ring for an electric vehicle wheel hub, including a magnetic guide ring body. The magnetic guide ring body is configured as a cylindrical body. A first connecting ring and a second connecting ring are respectively provided at both ends of the magnetic guide ring body. The radial thickness of the first connecting ring is equal to the radial thickness of the second connecting ring, and both are greater than the radial thickness of the magnetic guide ring body. A first connecting hole is provided on the first connecting ring, and a second connecting hole is provided on the second connecting ring. The first connecting hole and the second connecting hole correspond to each other.

[0005] As a further improvement of this utility model, the radial thickness of the magnetic ring body is set to 1.5~5mm, and the radial thickness of the first connecting ring and the radial thickness of the second connecting ring are both set to 5mm~10mm.

[0006] As a further improvement of this utility model, the above-mentioned magnetic ring body is integrated with the first connecting ring and the second connecting ring.

[0007] As a further improvement of this utility model, the two ends of the above-mentioned magnetic ring body are formed into a first connecting ring and a second connecting ring by a spinning process.

[0008] As a further improvement of this utility model, the number of the first connecting holes is set to 5 to 10, and the number of the second connecting holes is set to 5 to 10.

[0009] As a further improvement of this utility model, the first connecting hole is opened along the axial direction of the first connecting ring and is distributed sequentially along the circumferential direction of the first connecting ring, and the second connecting hole is opened along the axial direction of the second connecting ring and is distributed sequentially along the circumferential direction of the second connecting ring.

[0010] As a further improvement of this utility model, both the first connecting hole and the second connecting hole are configured as threaded holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By thickening only at both ends of the magnetic ring body to form the first connecting ring and the second connecting ring, this application not only ensures the normal opening of the connecting hole and realizes the fixed connection between the magnetic ring and the end cover, but also gives the magnetic ring body a suitable radial thickness to increase the internal space of the motor and ensure the improvement of the motor output performance; 2. The structure of the magnetic ring in this application achieves weight reduction compared with the prior art, thereby realizing the weight reduction of the motor and even the entire electric vehicle, meeting the strict weight limit requirements of the new national standard for electric vehicles, while saving magnetic ring material and realizing motor cost savings. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present invention.

[0013] Figure 2 This is the front view of this utility model.

[0014] Figure 3 This is a top view of the present invention.

[0015] Figure 4 This is an enlarged perspective view of the magnetic ring body of this utility model after the first connecting ring is spun into shape at one end.

[0016] Figure 5 This is an enlarged perspective view of the magnetic ring body of this utility model after being spun at both ends and installed in the wheel hub.

[0017] Explanation of the reference numerals: 1-Magnetic ring body, 2-First connecting ring, 3-Second connecting ring, 4-First connecting hole, 5-Second connecting hole. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] Conversely, this utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model as defined in the claims. Furthermore, to provide the public with a better understanding of this utility model, certain specific details are described in detail in the following description. However, those skilled in the art will fully understand this utility model even without these detailed descriptions.

[0021] like Figures 1 to 3 The magnetic ring shown is for an electric vehicle wheel hub and includes a magnetic ring body 1. The magnetic ring body 1 is cylindrical, and its radial thickness can be set to 2mm or 3mm depending on the actual motor performance output requirements. A suitable radial thickness of the magnetic ring body 1 increases the internal space of the motor, thereby increasing the electromagnetic arm of the motor. Under the same input and output power conditions, the output torque of the motor can be significantly improved.

[0022] To ensure the proper opening of the threaded connection holes, this application provides a first connecting ring 2 and a second connecting ring 3 at both ends of the magnetic ring body 1. The first connecting ring 2 and the second connecting ring 3 have the same structure and the same radial thickness, which can be set to 5mm, 7mm, or 10mm depending on the actual drilling requirements. In this embodiment, the first connecting ring 2 and the second connecting ring 3 are formed by spinning at both ends of the magnetic ring body 1, that is, the magnetic ring body 1 and the first connecting ring 2 and the second connecting ring 3 are integrated into one structure, which facilitates processing and ensures the structural strength of the magnetic ring.

[0023] The first connecting ring 2 has a first connecting hole 4, which is formed along the axial direction of the first connecting ring 2 and is distributed sequentially along the circumferential direction of the first connecting ring 2. Depending on actual needs, the number of first connecting holes 4 can be set to 5, 7, or 10, for connection with the end cap. The second connecting ring 3 has a second connecting hole 5, which is formed along the axial direction of the second connecting ring 3 and is distributed sequentially along the circumferential direction of the second connecting ring 3. Depending on actual needs, the number of second connecting holes 5 can be set to 5, 7, or 10. The first connecting holes 4 and the second connecting holes 5 correspond to each other, and both the first connecting holes 4 and the second connecting holes 5 are threaded holes to facilitate connection with the end cap.

[0024] To achieve the installation of the magnetic ring inside the wheel hub, such as Figure 1 , Figure 4 and Figure 5As one approach, a first connecting ring 2 can be formed by spinning and stacking at one end of the magnetic ring body 1, and a first connecting hole 4 can be drilled in the first connecting ring 2. The unspun end of the magnetic ring body 1 is then inserted into the wheel hub. After fixing the magnetic ring body 1 to the end cap located on one side of the wheel hub with screws through the first connecting hole 4, the other end of the magnetic ring body 1 is then spun and stacked to form a second connecting ring 3, and a second connecting hole 5 is drilled in the second connecting ring 3. The second connecting hole 5 is then connected to the end cap at the other end of the wheel hub with screws through the second connecting hole 5. As another approach, the outer diameters of the first connecting ring 2 and the second connecting ring 3 can be set to be smaller than the inner diameter of the wheel hub, and there can be a gap between the outer surface of the magnetic ring body 1 and the inner surface of the wheel hub. This ensures that the thickened magnetic ring body 1 at both ends can be inserted into the wheel hub.

[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the present utility model, and these should also be considered to fall within the protection scope of the present utility model.

Claims

1. A magnetic conducting ring of an electric motor wheel hub, comprising a magnetic conducting ring body (1), the magnetic conducting ring body (1) is arranged as a cylindrical body, characterized in that, The magnetic ring body (1) has a first connecting ring (2) and a second connecting ring (3) respectively at its two ends. The radial thickness of the first connecting ring (2) is equal to the radial thickness of the second connecting ring (3) and both are greater than the radial thickness of the magnetic ring body (1). The first connecting ring (2) has a first connecting hole (4) and the second connecting ring (3) has a second connecting hole (5). The first connecting hole (4) and the second connecting hole (5) correspond to each other.

2. The flux ring for an electric vehicle wheel hub as set forth in claim 1, wherein, The radial thickness of the magnetic ring body (1) is set to 1.5~5mm, and the radial thickness of the first connecting ring (2) and the second connecting ring (3) are both set to 5mm~10mm.

3. The flux ring for an electric vehicle wheel hub as set forth in claim 2, wherein, The magnetic ring body (1) is integrated with the first connecting ring (2) and the second connecting ring (3).

4. The flux ring for an electric vehicle wheel hub of claim 3, wherein, The two ends of the magnetic ring body (1) are formed into a first connecting ring (2) and a second connecting ring (3) by a spinning process.

5. The flux ring for an electric vehicle wheel hub as set forth in claim 1, wherein, The number of the first connecting hole (4) is set to 5 to 10, and the number of the second connecting hole (5) is set to 5 to 10.

6. The flux ring for an electric vehicle wheel hub of claim 5, wherein, The first connecting hole (4) is opened along the axial direction of the first connecting ring (2) and is distributed sequentially along the circumferential direction of the first connecting ring (2). The second connecting hole (5) is opened along the axial direction of the second connecting ring (3) and is distributed sequentially along the circumferential direction of the second connecting ring (3).

7. The flux ring for an electric vehicle wheel hub of claim 1, wherein, Both the first connecting hole (4) and the second connecting hole (5) are threaded holes.

Images