Rim of electric vehicle hub motor

Abstract

The utility model discloses a rim of a hub motor of an electric vehicle, which comprises a rim (1), the rim (1) comprises an inner ring part (11), the two sides of the inner ring part (11) are respectively connected with a left side ring part (12) and a right side ring part (13), the left side ring part (12), the right side ring part (13) and the inner ring part (11) are encircled to form an accommodating groove (10), and the accommodating groove (10) is used for accommodating a tire; the magnetic conducting ring (2) is connected to the inner wall of the inner ring part (11), the width of the magnetic conducting ring (2) is larger than that of the inner ring part (11), and the magnetic conducting ring (2) is used for fixing a magnetic steel sheet; the first end cover (3) is fixed between the left side ring part (12) and the magnetic conducting ring (2); according to the wheel rim, the production cost is lower, the strength of the wheel rim can be improved, magnetic leakage can be prevented, and the product quality can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor manufacturing, and in particular relates to a wheel rim of a hub motor of an electric vehicle. Background Art

[0002] Hub motor technology, also known as in-wheel motor technology, has the biggest feature of integrating power, transmission and braking devices into the wheel hub. It is often used in electric vehicles. The hub motor uses a stator and coil winding, plus a magnetic steel ring and a machine cover. The hub motor has the advantages of simple structure, not easy to damage, easy maintenance, low manufacturing cost, and high power conversion efficiency.

[0003] Chinese utility model patent application number 2012200830390, filed on March 7, 2012, discloses a wheel rim for an electric vehicle. The rim comprises a concave metal tire seat, a plurality of spokes clustered toward the tire seat's axis at the inner edge of the tire seat, and a plurality of spokes clustered and connected to the outer edge of a bearing seat. A rim is disposed between the bearing seat and the tire seat, and the rim is provided with a plurality of triangular tooth posts arranged in a circle, with their apexes facing the bearing seat. This electric vehicle wheel rim reduces rim weight, prevents gears from squeezing dust, stones, and other objects during operation, which could damage the vehicle, and strengthens the tire seat to prevent deformation.

[0004] However, the above structure is the same as the traditional method, the rim strength needs to be further improved, and the anti-magnetic leakage effect also needs to be further improved to improve the quality of the motor product. Utility Model Content

[0005] The purpose of the utility model is to overcome the technical problem of poor anti-magnetic leakage effect in the prior art and to provide a rim for an electric vehicle hub motor with high rim strength and good anti-magnetic leakage effect.

[0006] In order to solve the above technical problems, the utility model provides a rim of an electric vehicle hub motor, comprising:

[0007] The rim includes an inner ring portion, with a left ring portion and a right ring portion connected to both sides of the inner ring portion, respectively, and the left ring portion, the right ring portion and the inner ring portion surround each other to form a receiving groove, and the receiving groove is used to receive and place the tire;

[0008] A magnetic conductive ring connected to the inner wall of the inner ring portion, wherein the width of the magnetic conductive ring is greater than the width of the inner ring portion, and the magnetic conductive ring is used to fix the magnetic steel sheet;

[0009] a first end cover, the first end cover being fixed between the left ring portion and the magnetic conductive ring;

[0010] The second end cap is fixed between the right ring and the magnetic ring. By splitting the entire motor hub into four parts: the rim, the magnetic ring, the first end cap, and the second end cap, the present invention simplifies the manufacturing difficulty of the hub mold and reduces costs compared to the original one-piece hub.

[0011] As a further improvement measure of the present invention, the magnetic conductive ring includes a middle supporting portion and two side connecting portions, and the first end cover and the second end cover are respectively fixed on the two side connecting portions.

[0012] As a further improvement measure of the present invention, the width of the middle support portion is the same as the width of the inner ring portion, and each of the side connecting portions is located on the inner side of the left ring portion or the right ring portion.

[0013] As a further improvement measure of the present invention, the first end cover and the second end cover have the same shape, and are symmetrically arranged on both sides of the inner ring portion.

[0014] As a further improvement measure of the present invention, the first end cover and the second end cover both include a bottom welding plate and a support plate, the lower end of the support plate is connected to the bottom welding plate, the upper end of the support plate rests on the bottom surface of the rim, and the support plate is provided with a plurality of pressure-resistant grooves and connecting threaded holes.

[0015] As a further improvement measure of the present invention, the two bottom welding plates are respectively welded and fixed on the corresponding side connecting parts.

[0016] As a further improvement measure of the present invention, the overall thickness of the bottom welding plate and the side connecting portion after welding is 3.8-6 mm.

[0017] As a further improvement measure of the present invention, the shapes of the first end cover and the second end cover are set to be different, the second end cover includes a side connecting plate, the side connecting plate and the side connecting portion away from the first end cover are an integrally formed structure, and a stabilizing ring is provided on the inner side of the side connecting plate, and the stabilizing ring is sleeved on the side connecting portion.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. The rim of the entire electric vehicle hub motor consists of four parts: the rim, the magnetic ring, the first end cover and the second end cover. Compared with the one-piece hub, the present invention simplifies the manufacturing difficulty of the hub mold and reduces the cost. It is connected together by welding, and the overall operation is simple, which reduces the manufacturing cost; 2. The overall thickness of the bottom welding plate and the side connection part after welding is 3.8-6 mm, which can effectively prevent magnetic leakage and improve the product quality of the hub; 3. By setting the support plate, the rim strength is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the overall structure diagram of the utility model.

[0020] Figure 2 It is an explosion diagram of the utility model.

[0021] Figure 3 It is a right view of the present utility model.

[0022] Figure 4 It is a partial cross-sectional schematic diagram of the present utility model.

[0023] Figure 5 It is a structural schematic diagram of the first end cover of the utility model.

[0024] Figure 6 It is the main view of the present utility model.

[0025] Figure 7 It is a partial structural diagram of another embodiment of the utility model.

[0026] Explanation of the accompanying numbers: 1. Rim; 10. Receiving groove; 11. Inner ring; 12. Left ring; 13. Right ring; 2. Magnetic ring; 21. Middle support part; 22. Side connecting part; 3. First end cover; 31. Bottom welding plate; 32. Support plate; 33. Anti-pressure groove; 34. Connecting threaded hole; 4. Second end cover; 41. Side connecting plate; 42. Stabilizing ring. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] Rather, the present invention encompasses any alternatives, modifications, equivalents, and solutions within the spirit and scope of the present invention as defined by the claims. Furthermore, to facilitate a better understanding of the present invention, certain specific details are detailed below in the detailed description of the present invention. Those skilled in the art will be able to fully understand the present invention without these details.

[0029] like Figures 1 to 6 As shown, a rim of an electric vehicle hub motor splits the integrated hub into multiple components, reduces the material weight of its connection structure, and saves material costs.

[0030] like Figure 1 、 Figure 2 、 Figure 3The figure shows a rim for an electric vehicle hub motor, comprising: a rim 1, a magnetic ring 2, a first end cap 3, and a second end cap 4. The rim 1 is made of fully sealed material and primarily mates with the tire for mounting. The magnetic ring 2 is annular, with its inner wall used to secure magnetic steel sheets. All components are welded together. Compared to an integrated hub, this new design simplifies the hub mold manufacturing process, reducing costs. The hub is connected by welding, simplifying operation and reducing manufacturing costs.

[0031] The rim 1 of the present invention includes an inner ring portion 11, and the two sides of the inner ring portion 11 are respectively connected to a left ring portion 12 and a right ring portion 13. The left ring portion 12 and the right ring portion 13 are symmetrical structures. The left ring portion 12 and the right ring portion 13 and the inner ring portion 11 surround to form a receiving groove 10, and the receiving groove 10 is used to accommodate and place a tire.

[0032] The magnetic ring 2 is connected to the inner wall of the inner ring 11. The magnetic ring 2 and the inner ring 11 are connected by welding, and the width of the magnetic ring 2 is greater than the width of the inner ring 11. The magnetic ring 2 is used to fix the magnetic steel sheet. The width of the magnetic ring 2 is greater than the width of the inner ring 11. The excess part of the magnetic ring 2 is used to be fixed with the first end cover 3 and the second end cover 4. The first end cover 3 is fixed between the left ring 12 and the magnetic ring 2; the second end cover 4 is fixed between the right ring 13 and the magnetic ring 2.

[0033] like Figure 2 、 Figure 4 As shown, the magnetic conductive ring 2 of the present invention includes a middle supporting portion 21 and two side connecting portions 22. In order to save costs, the magnetic conductive ring 2 is made of a single plate wound into a circle, that is, a number of equal parts of teeth are cut from a whole steel plate, and the ends of the magnetic conductive ring 2 are wound into a ring shape and then welded together, that is, the entire middle supporting portion 21 and the two side connecting portions 22 are an integrated structure.

[0034] like Figure 4 As shown, the first end cover 3 and the second end cover 4 are fixed on the two side connection parts 22 respectively.

[0035] The width of the middle support portion 21 is the same as that of the inner ring portion 11 . The middle support portion 21 and the inner ring portion 11 are connected together, and the two side connection portions 22 are located on the inner side of the left ring portion 12 or the right ring portion 13 respectively.

[0036] In order to facilitate installation, the shapes of the first end cover 3 and the second end cover 4 can be set to be the same, and the first end cover 3 and the second end cover 4 can be symmetrically arranged on both sides of the inner ring portion 11.

[0037] like Figure 5 、 Figure 6As shown, the first end cap 3 and the second end cap 4 of the present invention are symmetrical structures, each including a bottom welding plate 31 and a support plate 32. The lower end of the support plate 32 is connected to the bottom welding plate 31, and the upper end of the support plate 32 abuts against the bottom surface of the rim 1. The two bottom welding plates 31 are respectively welded and fixed to the corresponding side connection parts 22. The bottom welding plates 31 not only play a connecting role, but also Figure 4 As shown, the overall thickness of the bottom welding plate 31 and the side connecting part 22 after welding is 5 mm. The bottom welding plate and the side connecting part are welded together, which increases the thickness of the magnetic steel fixing part, can reduce magnetic leakage, and improve the quality of the motor product.

[0038] The support plate 32 plays a supporting role and can be adjusted in length according to different wheel hub sizes.

[0039] like Figure 6 As shown, the support plate 32 is provided with a plurality of compression grooves 33 and connecting threaded holes 34. The compression grooves 33 not only reduce the weight of the support plate 32, but also provide an elastic margin when the wheel hub vibrates, increasing its flexibility and preventing the wheel hub from bending and deforming. The connecting threaded holes 34 can be connected to other structures.

[0040] Of course, if there are other special circumstances, other structures can be added to set the shapes of the first end cover 3 and the second end cover 4 to different shapes.

[0041] Example 2, as Figure 7 As shown, based on Example 1, further improvements are made, and the shapes of the first end cover 3 and the second end cover 4 are set to be different. The first end cover 3 includes a bottom welding plate 31 and a support plate 32. The bottom welding plate 31 is welded to the side connection part 22 on the left side thereof, and the second end cover 4 includes a side connection plate 41. The side connection plate 41 and the side connection part 22 away from the first end cover 3 are an integrally formed structure, which does not require welding and can ensure structural strength. It is convenient to align the middle support part 21 and weld it to the rim 1. In order to improve the strength, a stabilizing ring 42 is also provided on the inner side of the side connection plate 41, and the stabilizing ring 42 is sleeved on the side connection part 22.

[0042] The above describes the embodiments of the present invention in detail in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. For ordinary technicians in this field, several modifications and improvements can be made without departing from the present invention, and these should also be regarded as belonging to the scope of protection of the present invention.

Claims

1. A rim of an electric vehicle hub motor, characterized in that: include: A rim (1), the rim (1) comprising an inner ring portion (11), the inner ring portion (11) being connected to a left ring portion (12) and a right ring portion (13) on both sides thereof, the left ring portion (12) and the right ring portion (13) surrounding the inner ring portion (11) forming a receiving groove (10), the receiving groove (10) being used for receiving and placing a tire; A magnetic conductive ring (2), the magnetic conductive ring (2) is connected to the inner wall of the inner ring portion (11), and the width of the magnetic conductive ring (2) is greater than the width of the inner ring portion (11), and the magnetic conductive ring (2) is used to fix the magnetic steel sheet; A first end cover (3), the first end cover (3) being fixed between the left ring portion (12) and the magnetic conductive ring (2); A second end cover (4), the second end cover (4) is fixed between the right side ring portion (13) and the magnetic conductive ring (2).

2. The rim of the electric vehicle hub motor according to claim 1, characterized in that: The magnetic conductive ring (2) comprises a middle supporting portion (21) and two side connecting portions (22), and the first end cover (3) and the second end cover (4) are respectively fixed on the two side connecting portions (22).

3. The rim of the electric vehicle hub motor according to claim 2, characterized in that: The width of the middle support portion (21) is the same as the width of the inner ring portion (11), and each of the side connection portions (22) is located inside the left ring portion (12) or the right ring portion (13).

4. The rim of the electric vehicle hub motor according to claim 3, characterized in that: The first end cover (3) and the second end cover (4) have the same shape, and the first end cover (3) and the second end cover (4) are symmetrically arranged on both sides of the inner ring portion (11).

5. The rim of the electric vehicle hub motor according to claim 4, characterized in that: The first end cover (3) and the second end cover (4) both comprise a bottom welding plate (31) and a support plate (32), one end of the support plate (32) being connected to the bottom welding plate (31), the other end of the support plate (32) being against the inner side surface of the rim (1), and a plurality of pressure-resistant grooves (33) and connecting threaded holes (34) being formed on the support plate (32).

6. The rim of the electric vehicle hub motor according to claim 5, characterized in that: The two bottom welding plates (31) are respectively welded and fixed on the corresponding side connection parts (22).

7. The rim of the electric vehicle hub motor according to claim 6, characterized in that: The overall thickness of the bottom welding plate (31) and the side connecting portion (22) after welding is 3.8-6 mm.

8. The rim of the electric vehicle hub motor according to claim 3, characterized in that: The first end cover (3) and the second end cover (4) are configured to have different shapes. The second end cover (4) comprises a side connecting plate (41). The side connecting plate (41) and a side connecting portion (22) away from the first end cover (3) are an integrally formed structure. A stabilizing ring (42) is provided on the inner side of the side connecting plate (41), and the stabilizing ring (42) is sleeved on the side connecting portion (22).

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