Carbon fiber composite reinforced electric automobile hub

Abstract

The utility model discloses a carbon fiber composite reinforced electric automobile hub which comprises a hub body, the hub body comprises a rim, the left side and the right side of the rim are respectively provided with a front wheel flange and a rear wheel flange, and the front wheel flange and the rear wheel flange are respectively provided with a wheel flange groove. Grid patterns are pressed in the rim groove, and a composite layer integrally formed with the hub body is arranged in the rim groove. The composite layer comprises gridding cloth and liquid glue, and the surface of the composite layer is flush with the surface of the rim; a plurality of strip-shaped grooves which are uniformly and annularly distributed are formed in the front surface of the hub body, and two polygonal grooves which are symmetrically formed are formed between any two strip-shaped grooves; the polygonal grooves are evenly and annularly distributed along the hub body and are arranged in a bilateral symmetry mode. The rim groove is formed in the rim of the hub body, and the composite layer integrally formed with the hub body is arranged in the rim groove, so that the structural strength is higher; and a plurality of grooves are formed in the hub body, so that the overall mass is lighter.

Description

Technical Field

[0001] This utility model belongs to the field of wheel hub technology, specifically relating to a carbon fiber composite reinforced electric vehicle wheel hub. Background Technology

[0002] The wheel hub is a crucial component of an electric vehicle. It not only supports the tires but also connects to the vehicle's suspension and braking systems, playing a key role in the vehicle's driving performance and safety. A wheel hub typically consists of a rim, spokes, and hub edge. The hub edge is the critical area where the tire and hub fit tightly together; its shape, size, and surface condition directly affect the tire's installation and sealing performance. The choice of materials and manufacturing process significantly impacts the wheel hub's performance. Common wheel hub materials include aluminum alloys and steel. Aluminum alloy wheels are widely used in electric vehicles due to their lightweight, high strength, and good heat dissipation. However, aluminum alloys have relatively low hardness, making them prone to deformation or cracking under impact. Wheel hub manufacturing processes include casting and spinning, and different processes affect the wheel hub's internal structure and mechanical properties. For example, improper casting processes can lead to defects such as porosity and inclusions inside the wheel hub, which can become the origin of cracks during use. A patent with publication number CN111532084B discloses a curved, mechanically polished aluminum wheel hub, including a rim. A first mounting surface is fixedly connected to the front outer surface of the rim, and a first spoke is fixedly connected to the outer surface of the first mounting surface. A valve stem protrusion is fixedly connected to the side of the wheel rim base. Existing mechanically polished aluminum wheel hubs have low structural strength at the rim edge, making them prone to cracking due to significant impact forces after prolonged vehicle operation. Furthermore, existing wheel hubs have a relatively high overall weight, resulting in poor weight reduction. Therefore, a carbon fiber composite reinforced electric vehicle wheel hub is needed to overcome these difficulties. Summary of the Invention

[0003] This invention addresses the problems existing in the prior art by designing a carbon fiber composite reinforced electric vehicle wheel hub. The invention features a rim groove on the rim of the wheel hub body, within which a composite layer integrally formed with the wheel hub body is installed, resulting in higher structural strength. Furthermore, by creating multiple grooves on the wheel hub body, the overall weight is reduced.

[0004] The objective of this invention is achieved through the following technical solution: a carbon fiber composite reinforced electric vehicle wheel hub, comprising a wheel hub body, the wheel hub body including a rim, a front rim and a rear rim respectively provided on the left and right sides of the rim, and a rim groove provided on both the front and rear rims; a mesh pattern is pressed into the rim groove, and a composite layer integrally formed with the wheel hub body is provided in the rim groove; the composite layer includes a mesh cloth and a liquid adhesive, and the surface of the composite layer is flush with the surface of the rim; the front of the wheel hub body is provided with several uniformly annularly distributed strip grooves, and two symmetrically arranged polygonal grooves are provided between any two strip grooves; the polygonal grooves are uniformly annularly distributed along the wheel hub body, and the polygonal grooves are symmetrically arranged on the left and right.

[0005] Preferably, the rim groove is a sunken groove, and the sunken depth of the rim groove is 1.1-1.3 mm.

[0006] Preferably, the opening of the rim groove is inclined outward, and the inclination angle of the opening of the rim groove is 30-35 degrees.

[0007] Preferably, the mesh fabric is a bundle of glass fiber or a bundle of carbon fiber; the mesh fabric includes intertwined first fiber bodies with mesh openings between them, and second fiber bodies are interlaced and wound through the mesh openings; the mesh fabric is coated with liquid adhesive, and the mesh pattern is also coated with liquid adhesive. The first and second fiber bodies have the same outer diameter, which is 0.1-0.13 mm; the number of first and second fiber bodies is the same, and the mesh fabric contains 180-210 first and second fiber bodies.

[0008] Preferably, the liquid adhesive is evenly distributed on the upper and lower end faces of the mesh fabric, and the mesh openings are also evenly coated with liquid adhesive; the liquid adhesive is a high molecular weight epoxy resin.

[0009] First, the wheel hub body is formed by low-pressure casting. Grooves are made on both the front and rear rims of the wheel hub body, and a grid pattern is pressed into these grooves. Liquid adhesive is then applied to the grid pattern within the grooves, covering it completely. Next, a mesh fabric is wound around the grooves, with liquid adhesive applied to it during the winding process to saturate the fabric. Then, a styrene-butadiene rubber layer is sprayed onto the outermost layer of the composite layer (not shown in the accompanying drawings). The wheel hub body is then allowed to dry naturally. After drying, it is placed in a vulcanizing furnace for further vulcanization and drying, thus forming the composite layer and the wheel hub body as a single unit.

[0010] Preferably, the number of strip grooves is five, and the number of polygonal grooves is ten; the two polygonal grooves positioned between two strip grooves are symmetrically arranged. By rationally arranging the strip grooves and polygonal grooves, the wheel hub body can maintain structural stability and achieve a lighter overall weight.

[0011] Preferably, the back of the wheel hub body is provided with a plurality of evenly distributed first weight-reducing grooves, which are located close to the center of the wheel hub body.

[0012] Preferably, the back of the wheel hub body is provided with a plurality of second weight-reducing grooves and a plurality of third weight-reducing grooves; the second weight-reducing grooves and the third weight-reducing grooves extend from the center of the wheel hub body to the edge of the wheel hub body; the left and right sides of any one of the strip grooves are provided with symmetrically arranged second weight-reducing grooves, and a third weight-reducing groove is provided between any two polygonal grooves.

[0013] By setting the first, second, and third weight-reduction grooves, the weight of the wheel hub body is reduced, thereby reducing the weight of the tire and improving handling.

[0014] Preferably, the extrusion depth of the mesh pattern is 0.25-0.35 mm, the mesh pattern is parallelogram-shaped, and one of the opening angles of the mesh pattern is 40-50 degrees.

[0015] Compared with existing technologies, this utility model has the following beneficial effects: 1. A mesh pattern is set in the rim groove, and the surface of the rim groove is covered with liquid adhesive before the mesh cloth is wound, which improves the strength of the front and rear rims and avoids the initiation and propagation of cracks when the wheel hub body is subjected to impact and alternating stress; 2. A composite layer is set in the rim groove, and the composite layer is integrally formed with the wheel hub body, which improves the impact resistance and fatigue resistance of the front and rear rims; 3. A styrene-butadiene rubber layer is sprayed on the outer surface of the wheel hub body where the composite layer is located, thereby increasing the friction between the wheel hub body and the tire, resulting in a tighter fit between the wheel hub body and the tire and better sealing. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is an exploded view of the present invention;

[0018] Figure 3 This is the front view of the present invention;

[0019] Figure 4 This is a rear view of the present invention;

[0020] Figure 5 This is a diagram of the internal structure of the present invention;

[0021] Figure 6 for Figure 5 A magnified view of a portion of position A in the middle;

[0022] Figure 7 This is a diagram of the internal structure of the mesh fabric;

[0023] Figure 8 This is a schematic diagram of the mesh fabric structure;

[0024] Figure 9 This is a schematic diagram showing the assembly of the wheel hub and the tire.

[0025] The markings in the diagram are: 1. Wheel hub body; 2. Wheel rim; 3. Front rim; 4. Rear rim; 5. Rim groove; 6. Mesh pattern; 7. Composite layer; 71. Mesh fabric; 711. First fiber body; 712. Second fiber body; 713. Mesh; 72. Liquid adhesive; 8. Strip groove; 9. Polygonal groove; 10. First weight reduction groove; 11. Second weight reduction groove; 12. Third weight reduction groove. Detailed Implementation

[0026] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0027] like Figures 1 to 9 As shown, this embodiment discloses a carbon fiber composite reinforced electric vehicle wheel hub, including a wheel hub body 1, a wheel rim 2, a front rim 3 and a rear rim 4 respectively on the left and right sides of the wheel rim 2, and a rim groove 5 on both the front rim 3 and the rear rim 4; a mesh pattern 6 is pressed into the rim groove 5, and a composite layer 7 integrally formed with the wheel hub body 1 is provided in the rim groove 5; the composite layer 7 includes a mesh cloth 71 and a liquid adhesive 72, and the surface of the composite layer 7 is flush with the surface of the wheel rim 2; the front of the wheel hub body 1 is provided with a plurality of uniformly annularly distributed strip grooves 8, and two symmetrically arranged polygonal grooves 9 are provided between any two strip grooves 8; the polygonal grooves 9 are uniformly annularly distributed along the wheel hub body 1, and the polygonal grooves 9 are symmetrically arranged on the left and right.

[0028] The rim groove 5 is a sunken groove with a sunken depth of 1.1-1.3 mm. The opening of the rim groove 5 is inclined outward at an angle of 30-35 degrees. The mesh fabric 71 is a bundle of glass fiber or carbon fiber; the mesh fabric 71 includes intertwined first fiber bodies 711, with mesh openings 713 between the intertwined first fiber bodies 711, and second fiber bodies 712 inserted and wound through the mesh openings 713; the mesh fabric 71 is coated with liquid adhesive 72, and the mesh pattern 6 is also coated with liquid adhesive 72. The extrusion depth of the mesh pattern 6 is 0.25-0.35 mm, the mesh pattern 6 is parallelogram-shaped, and one of the opening angles of the mesh pattern 6 is 40-50 degrees. The first fiber body 711 and the second fiber body 712 have the same outer diameter, which is 0.1-0.13 mm. The first fiber body 711 and the second fiber body 712 have the same number of weaves, and the mesh fabric 71 contains 180-210 of each type. The liquid adhesive 72 is evenly distributed on the upper and lower end faces of the mesh fabric 71, and is also evenly coated within the mesh openings 713. The liquid adhesive 72 is a high-molecular-weight epoxy resin. There are five strip grooves 8 and ten polygonal grooves 9. Two polygonal grooves 9 are symmetrically arranged between two strip grooves 8. The back of the wheel hub body 1 has several evenly distributed first weight-reducing grooves 10, which are located near the center of the wheel hub body 1. The back of the wheel hub body 1 is also provided with a plurality of second weight reduction grooves 11 and a plurality of third weight reduction grooves 12; the second weight reduction grooves 11 and the third weight reduction grooves 12 extend from the center of the wheel hub body 1 to the edge of the wheel hub body 1; the left and right sides of any one of the strip grooves 8 are provided with symmetrically arranged second weight reduction grooves 11, and a third weight reduction groove 12 is provided between any two polygonal grooves 9.

[0029] The specific operation process of this embodiment is as follows: First, the wheel hub body 1 is formed by low-pressure casting. Wheel hub grooves 5 are opened on both the front rim 3 and the rear rim 4 of the wheel hub body 1, and a mesh pattern 6 is pressed into the grooves 5. Liquid adhesive 72 is applied to the mesh pattern 6 in the grooves 5, covering the mesh pattern 6. Then, a mesh fabric 6 is wound inside the grooves 5. During the winding process, liquid adhesive 72 is applied to the mesh fabric 6, impregnating it. After a certain number of turns, the composite layer 7 is pre-tightened within the grooves 5. Next, a styrene-butadiene rubber layer is sprayed onto the outermost layer of the composite layer 7 (not shown in the accompanying drawings). The wheel hub body 1 is then allowed to dry naturally. After drying, the wheel hub body 1 is placed in a vulcanizing furnace for vulcanization and drying, thus forming the composite layer 7 and the wheel hub body 1 as a single unit. By rationally arranging the strip grooves 8 and polygonal grooves 9, the wheel hub body 1 maintains structural stability and is lighter overall. By setting the first weight reduction groove 10, the second weight reduction groove 11 and the third weight reduction groove 12, the weight of the wheel hub body is reduced, thereby reducing the weight of the tire and improving handling.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A carbon fiber composite reinforced electric vehicle wheel hub, comprising a wheel hub body (1), the wheel hub body (1) comprising a wheel rim (2), characterized in that, The left and right sides of the rim (2) are respectively provided with a front rim (3) and a rear rim (4), and both the front rim (3) and the rear rim (4) are provided with rim grooves (5); the rim grooves (5) are pressed with a grid pattern (6), and the rim grooves (5) are provided with a composite layer (7) integrally formed with the hub body (1); the composite layer (7) includes a mesh cloth (71) and a liquid adhesive (72), and the surface of the composite layer (7) is flush with the surface of the rim (2); the front of the hub body (1) is provided with several uniformly distributed annular strip grooves (8), and two symmetrically arranged polygonal grooves (9) are provided between any two strip grooves (8); the polygonal grooves (9) are uniformly distributed annularly along the hub body (1), and the polygonal grooves (9) are symmetrically arranged on the left and right.

2. The carbon fiber composite reinforced electric vehicle wheel hub according to claim 1, characterized in that, The rim groove (5) is a sunken groove, and the sunken depth of the rim groove (5) is 1.1-1.3 mm.

3. The carbon fiber composite reinforced electric vehicle wheel hub according to claim 1, characterized in that, The opening of the rim groove (5) is inclined outward, and the inclination angle of the opening of the rim groove (5) is 30-35 degrees.

4. The carbon fiber composite reinforced electric vehicle wheel hub according to claim 1, characterized in that, The mesh fabric (71) is a bundle of glass fiber or a bundle of carbon fiber; the mesh fabric (71) includes a first fiber body (711) that is intertwined with each other, and a mesh (713) is provided between the intertwined first fiber bodies (711), and a second fiber body (712) is inserted and wound in the mesh (713); the mesh fabric (71) is coated with liquid adhesive (72), and the mesh pattern (6) is also coated with liquid adhesive (72); the outer diameters of the first fiber body (711) and the second fiber body (712) are the same, and the outer diameters of the first fiber body (711) and the second fiber body (712) are 0.1-0.13 mm; the number of the first fiber body (711) and the second fiber body (712) is the same, and the mesh fabric (71) contains 180-210 first fiber bodies (711) and second fiber bodies (712).

5. The carbon fiber composite reinforced electric vehicle wheel hub according to claim 4, characterized in that, The liquid adhesive (72) is evenly distributed on the upper and lower end faces of the mesh fabric (71), and the mesh (713) is also evenly coated with liquid adhesive (72); the liquid adhesive (72) is a high molecular epoxy resin.

6. The carbon fiber composite reinforced electric vehicle wheel hub according to claim 1, characterized in that, The number of the strip grooves (8) is five, and the number of the polygonal grooves (9) is ten; the two polygonal grooves (9) arranged between the two strip grooves (8) are symmetrically arranged on the left and right.

7. The carbon fiber composite reinforced electric vehicle wheel hub according to claim 1, characterized in that, The back of the wheel hub body (1) is provided with several evenly distributed first weight reduction grooves (10), and the first weight reduction grooves (10) are located close to the center of the wheel hub body (1).

8. The carbon fiber composite reinforced electric vehicle wheel hub according to claim 1, characterized in that, The back of the hub body (1) is also provided with a number of second weight reduction grooves (11) and a number of third weight reduction grooves (12); the second weight reduction grooves (11) and the third weight reduction grooves (12) extend from the center of the hub body (1) to the edge of the hub body (1); the left and right sides of any one of the strip grooves (8) are provided with symmetrically arranged second weight reduction grooves (11), and a third weight reduction groove (12) is provided between any two polygonal grooves (9).

9. The carbon fiber composite reinforced electric vehicle wheel hub according to claim 1, characterized in that, The extrusion depth of the mesh pattern (6) is 0.25-0.35 mm, the mesh pattern (6) is parallelogram-shaped, and one of the opening angles of the mesh pattern (6) is 40-50 degrees.

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