Automobile hub and automobile

Abstract

The utility model discloses an automobile hub and an automobile. The automobile hub comprises a hub body, and a spoke assembly is arranged on one side of the hub body. A plurality of first through holes are formed in the spoke assembly, and a second through hole and a third through hole are formed between every two adjacent first through holes; the second through hole and the third through hole are formed in the radial direction of the hub body. The first through hole comprises a first arc section and a second arc section, and the first arc section is smoothly connected with the second arc section; the radian of the second arc section is greater than that of the first arc section; the second arc section is arranged close to the axis of the hub body. According to the design of the automobile hub, through reasonable spoke assembly arrangement and through hole design, the technical problem that the mechanical property, the anti-fatigue capacity and the heat dissipation performance of a traditional hub cannot be considered at the same time is effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile wheel hub development and relates to an automobile wheel hub and an automobile. Background Art

[0002] In the automotive industry, the wheel hub is an important component. Its design not only affects the driving performance of the vehicle, but also involves aerodynamic performance. Therefore, it is necessary to take into account both mechanical performance and aerodynamic performance. Traditional wheel hub designs mostly use straight or arc-shaped spokes to connect the hub. Although the manufacturing process is simple, there is still room for improvement in strength and fatigue resistance. The traditional uniform vent design helps to improve heat dissipation performance, but it requires careful design to avoid problems such as uneven heat dissipation and reduced structural strength. The spokes are the same, and the air ducts are the same. Therefore, they cannot cope with stress in different directions, which easily leads to stress and strain concentration, reducing the stability of the vehicle and the service life of the hub. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides an automobile wheel hub and an automobile, thereby solving the technical problem that the structural strength and ventilation effect of the automobile wheel hub in the prior art cannot be achieved at the same time.

[0004] The utility model is realized by the following technical solutions:

[0005] An automobile wheel hub comprises a wheel hub body, wherein a spoke assembly is provided on one side of the wheel hub body;

[0006] The spoke assembly is provided with a plurality of first through holes, and a second through hole and a third through hole are provided between two adjacent first through holes;

[0007] The second through hole and the third through hole are arranged along the radial direction of the hub body;

[0008] The first through hole includes a first arc segment and a second arc segment, the first arc segment is smoothly connected to the second arc segment; the curvature of the second arc segment is greater than that of the first arc segment; the second arc segment is arranged close to the axis of the hub body.

[0009] Preferably, the hub body comprises a first hub ring, a second hub ring and a bead seat arranged between the first hub ring and the second hub ring; and the spoke assembly is connected to the first hub ring.

[0010] Preferably, the spoke assembly includes a concentrically arranged spoke outer ring and a spoke inner ring; the spoke outer ring is connected to the first hub ring; the first arc segment is arranged on the spoke outer ring, and the second arc segment is arranged on the spoke inner ring.

[0011] Preferably, the second through hole is arranged close to the outer ring of the spoke, and the third through hole is arranged close to the inner ring of the spoke.

[0012] Preferably, the second through hole comprises a third arc segment and a fourth arc segment which are connected to each other, and the curvature of the third arc segment is different from that of the fourth arc segment; and the fourth arc segment is arranged on the outer ring of the spoke.

[0013] Preferably, the fourth arc segment is arranged concentrically with the outer ring of the spokes.

[0014] Preferably, the curvature of the fourth circular arc segment is greater than the curvature of the third circular arc segment.

[0015] Preferably, a cross-sectional area of ​​the second through hole is greater than a cross-sectional area of ​​the third through hole.

[0016] Preferably, two adjacent first through holes are symmetrically arranged on both sides of the second through hole and the third through hole.

[0017] A car comprises the above-mentioned car wheel hub.

[0018] Compared with the prior art, the utility model has the following beneficial technical effects:

[0019] The utility model discloses a car wheel hub. The spoke assembly is a key part connecting the wheel hub body and the tire. Its design directly affects the mechanical properties of the wheel hub. By reasonably arranging the spoke assembly and the through holes thereon, the overall weight can be reduced while ensuring the strength of the wheel hub, thereby improving energy efficiency and reducing material consumption. The spoke assembly is provided with a plurality of first through holes, and a second through hole and a third through hole are provided between two adjacent first through holes; the second through holes and the third through holes are arranged along the radial direction of the wheel hub body. The design of these through holes not only reduces the weight of the wheel hub, but also significantly increases the heat dissipation surface area. When the vehicle is running, especially the heat generated during the braking process can be quickly dissipated through these through holes, effectively reducing the temperature of the wheel hub and the braking system, and improving the heat dissipation performance. The second through holes and the third through holes are arranged along the radial direction of the wheel hub body. This layout is conducive to the rapid conduction and dissipation of heat, and avoids the accumulation of heat inside the wheel hub. The first through hole includes a first arc segment and a second arc segment, and the curvature of the second arc segment is greater than that of the first arc segment, and the curvature of the second arc segment is greater than that of the first arc segment; the second arc segment is arranged close to the axis of the hub body, and this design may help to disperse stress and reduce stress concentration, thereby improving the fatigue resistance of the hub. At the same time, the smooth connection method also reduces fatigue cracks that may be caused by sudden stress changes. The design of the through hole has a positive impact on the aerodynamic performance of the hub, and further improves the heat dissipation efficiency and the vehicle's sports performance by reducing air resistance or guiding air flow. In summary, the design of the automobile hub effectively solves the technical problems that traditional hubs cannot take into account in terms of mechanical properties, fatigue resistance and heat dissipation performance through reasonable spoke assembly layout and through hole design.

[0020] Furthermore, the hub body includes a first hub ring, a second hub ring, and a bead seat disposed between the first hub ring and the second hub ring; the spoke assembly is connected to the first hub ring, and through the layered design of the first hub ring and the second hub ring, the hub body can disperse stress and avoid stress concentration when subjected to various forces and torques. This layered structure improves the overall strength and stability of the hub. The bead seat is located between the first hub ring and the second hub ring, and it plays a key supporting role. The bead seat not only supports the installation of the tire, but also enhances the rigidity of the hub, enabling it to withstand greater loads and impacts. The space between the bead seat and the first hub ring and the second hub ring can form an effective heat dissipation channel. When the hub is working, the heat generated can be quickly dissipated through these channels, reducing the temperature of the hub and improving the heat dissipation performance.

[0021] Furthermore, the spoke assembly includes a spoke outer ring and a spoke inner ring arranged concentrically; the spoke outer ring is connected to the first hub ring; the first arc segment is arranged on the spoke outer ring, and the second arc segment is arranged on the spoke inner ring. The concentric arrangement of the spoke outer ring and the spoke inner ring ensures the overall stability and balance of the spoke assembly. This design helps to disperse and resist various forces and torques from the tire and the road surface, and improves the bearing capacity of the hub. By arranging the first arc segment and the second arc segment on the spoke outer ring and the spoke inner ring respectively, the layered bearing of the spoke assembly is realized. This design can more effectively disperse stress and reduce stress concentration, thereby improving the strength and durability of the spoke. By arranging the first arc segment and the second arc segment on two ring layers respectively, unnecessary material use can be reduced without sacrificing performance, thereby reducing the weight of the spoke assembly. The space between the spoke outer ring and the spoke inner ring can form an effective air circulation channel. When the vehicle is driving, air can flow between the spoke inner and outer rings through these channels to improve heat dissipation efficiency. Since the first arc segment and the second arc segment are respectively arranged on different ring layers, they jointly increase the heat dissipation area of ​​the spoke assembly, which helps to dissipate the heat generated by the hub to the surrounding environment more quickly and keep the hub running at a lower temperature.

[0022] Furthermore, the second through hole is arranged near the outer ring of the spoke, and the third through hole is arranged near the inner ring of the spoke. By arranging the second through hole and the third through hole near the outer ring of the spoke and the inner ring of the spoke respectively, the layered heat dissipation of the spoke assembly is realized. The through hole of the outer ring helps to introduce external air into the interior of the spoke, while the through hole of the inner ring helps to discharge the internal heat, thereby forming an effective heat dissipation cycle. The arrangement of the through hole increases the heat dissipation area of ​​the spoke assembly, so that the heat can be dissipated to the surrounding environment faster. This design is particularly suitable for occasions requiring high-intensity heat dissipation, such as racing cars or heavy-loaded vehicles. The arrangement of the through hole helps to disperse the stress concentration phenomenon of the spoke assembly when it is stressed. By distributing the through holes on different ring layers, the stress can be more evenly distributed in various parts of the spoke, thereby improving the overall strength and durability of the spoke. The second through hole near the outer ring of the spoke can provide more support for the outer ring, while the third through hole near the inner ring of the spoke can provide similar support for the inner ring. This design helps to enhance the overall rigidity of the spoke assembly and reduce deformation and vibration.

[0023] Furthermore, the second through hole includes a third arc segment and a fourth arc segment connected and arranged, and the third arc segment and the fourth arc segment have different curvatures; the fourth arc segment is arranged on the outer ring of the spoke, and the third arc segment and the fourth arc segment have different curvatures. This design can form a more complex stress distribution around the through hole. Compared with a single arc shape, this differentiated design helps to better disperse stress and reduce stress concentration, thereby enhancing the structural strength of the spoke assembly. The fourth arc segment is arranged on the outer ring of the spoke, which further strengthens the structure of the outer ring. As the main load-bearing part of the spoke assembly, its strengthened design helps to improve the load-bearing capacity and stability of the entire hub. The fourth arc segment is located on the outer ring of the spoke, which makes this part more susceptible to external airflow. Therefore, this design helps to increase the heat dissipation area of ​​the spoke assembly and improve the heat dissipation efficiency. The difference in curvature between the third arc segment and the fourth arc segment may guide the airflow to form a specific flow path around the through hole. This optimized airflow path helps to more efficiently dissipate the heat generated by the hub.

[0024] Furthermore, the fourth arc segment is concentrically arranged with the spoke outer ring, and the concentrically arranged fourth arc segment and the spoke outer ring are geometrically consistent. This design helps to reduce the stress concentration phenomenon caused by structural mutation, and the stress distribution is more uniform, so that the spoke assembly is more stable and reliable when subjected to various forces and torques. As a part of the through hole, the concentric arrangement of the fourth arc segment strengthens the connection with the spoke outer ring. This strengthened connection not only improves the strength of the through hole edge, but also enhances the supporting capacity of the entire spoke outer ring, so that the spoke assembly is not easy to deform or damage when rotating at high speed or bearing heavy loads. The concentrically arranged fourth arc segment helps to guide the airflow to flow more smoothly around the spoke outer ring. This optimization of the airflow path allows heat to be transferred from the inside of the wheel hub to the external environment more quickly, improving the heat dissipation efficiency. Especially when driving at high speed, the external airflow can more effectively flush the spoke outer ring and the fourth arc segment, further reducing the hub temperature.

[0025] Furthermore, the curvature of the fourth arc segment is greater than that of the third arc segment. Since the curvature of the fourth arc segment is larger, it forms a smoother transition at the edge of the through hole. This smooth transition helps to reduce stress concentration, so that the spoke assembly can disperse stress more evenly when subjected to external force, thereby improving the stability and durability of the overall structure. A larger curvature also means that the fourth arc segment occupies more space, which helps to optimize the local structural shape of the spoke assembly while keeping the overall size of the through hole unchanged. Through a reasonable curvature design, the bearing capacity and fatigue resistance of the spoke assembly can be further improved. The curvature of the fourth arc segment is larger, so that the opening of the through hole in this part is also correspondingly increased, which increases the contact area between the spoke assembly and the external environment, thereby improving the heat dissipation efficiency. In particular, when driving at high speed, the external airflow can more effectively enter the spoke through the opening of the fourth arc segment, accelerating the heat dissipation. The larger curvature can also guide the airflow to form a specific flow path around the through hole, so that the airflow can flow more smoothly through various parts of the spoke assembly. This optimized airflow flow path helps to further improve the heat dissipation performance.

[0026] Furthermore, the cross-sectional area of ​​the second through hole is larger than the cross-sectional area of ​​the third through hole. The second through hole has a larger cross-sectional area, which means that it provides more surface area for heat exchange with the external environment. During vehicle driving, especially at high speeds, the larger through hole can more effectively absorb and dissipate the heat generated inside the hub, thereby reducing the hub temperature and improving the safety and stability of the vehicle. The larger through hole cross-sectional area helps to form a more uniform stress distribution inside the spoke. When the hub is subjected to external loads, the larger through hole can better disperse stress and reduce stress concentration, thereby reducing the risk of fatigue damage to the spoke assembly. By adjusting the cross-sectional area of ​​the through hole, the utilization of materials can be optimized without sacrificing structural strength. The larger through hole cross-sectional area may mean that while maintaining the same load-bearing capacity, the material usage of the spoke assembly can be reduced to achieve a lightweight design.

[0027] Furthermore, two adjacent first through holes are symmetrically arranged on both sides of the second through hole and the third through hole. The symmetrically arranged first through holes help to achieve a more uniform stress distribution on the spokes or related components. This layout can reduce the risk of fatigue damage or structural damage caused by local stress concentration, thereby improving the stability and durability of the overall structure. By optimizing the stress distribution, the symmetrically arranged first through holes can also improve the bearing capacity of the spokes or related components. Under the same load, this design can ensure that the structure is more stable and reduce the possibility of deformation or failure. Although the first through hole, the second through hole and the third through hole together constitute ventilation channels on the spokes, these channels can increase air circulation, thereby helping to improve the heat dissipation performance of the hub. The symmetrically arranged first through holes can further optimize the ventilation effect and ensure that heat can be dissipated from the inside of the hub more effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 This is a front view of an automobile wheel hub in the utility model;

[0030] Figure 2 It is a left side view of a vehicle wheel hub in the utility model;

[0031] Figure 3 It is a right side view of a vehicle wheel hub in the utility model;

[0032] Figure 4 The utility model is a front view of an automobile wheel hub.

[0033] Wherein: 1. hub body, 11. first hub ring, 12. second hub ring, 13. tire bead seat, 2. spoke assembly, 21. first through hole, 211. first arc segment, 212. second arc segment, 22. second through hole, 221. third arc segment, 222. fourth arc segment, 23. third through hole, 3. spoke outer ring, 4. spoke inner ring. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0038] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] The utility model is further described in detail below with reference to the accompanying drawings:

[0041] like Figures 1 to 3 As shown, the utility model discloses a car wheel hub, characterized in that it includes a wheel hub body 1, and a spoke assembly 2 is provided on one side of the wheel hub body 1; a plurality of first through holes 21 are provided on the spoke assembly 2, and a second through hole 22 and a third through hole 23 are provided between two adjacent first through holes 21; the second through holes 22 and the third through holes 23 are arranged along the radial direction of the wheel hub body 1; the first through hole 21 includes a first circular arc segment 211 and a second circular arc segment 212, and the first circular arc segment 211 is smoothly connected to the second circular arc segment 212; the curvature of the second circular arc segment 212 is greater than that of the first circular arc segment 211; the second circular arc segment 212 is arranged close to the axis of the wheel hub body 1.

[0042] In a specific embodiment, Figure 4 As shown, the hub body 1 includes a first hub ring 11 , a second hub ring 12 and a bead seat 13 arranged between the first hub ring 11 and the second hub ring 12 ; the spoke assembly 2 is connected to the first hub ring 11 .

[0043] Further preferably, the spoke assembly 2 comprises a spoke outer ring 3 and a spoke inner ring 4 which are arranged concentrically; the spoke outer ring 3 is connected to the first hub ring 11; the first arc segment 211 is arranged on the spoke outer ring 3, and the second arc segment 212 is arranged on the spoke inner ring 4. The second through hole 22 is arranged close to the spoke outer ring 3, and the third through hole 23 is arranged close to the spoke inner ring 4.

[0044] In a more preferred solution, the second through hole 22 includes a third arc segment 221 and a fourth arc segment 222 which are connected to each other, and the third arc segment 221 and the fourth arc segment 222 have different curvatures; the fourth arc segment 222 is arranged on the spoke outer ring 3. The fourth arc segment 222 is arranged concentrically with the spoke outer ring 3. The curvature of the fourth arc segment 222 is greater than that of the third arc segment 221.

[0045] In another more preferred embodiment, the cross-sectional area of ​​the second through hole 22 is greater than the cross-sectional area of ​​the third through hole 23. Two adjacent first through holes 21 are symmetrically arranged on both sides of the second through hole 22 and the third through hole 23. Five first through holes 21 are arranged on the spoke assembly 2. By arranging the first through holes 21 on the spoke assembly 2, the amount of material used can be effectively reduced, thereby reducing the weight of the entire assembly, which is of great significance for improving the fuel economy of the vehicle and reducing energy consumption. The through holes can be used as channels for air circulation, increasing the contact area between the spoke assembly and the surrounding air, thereby improving the heat dissipation performance. Under high-speed driving or high-load conditions, this helps to reduce the temperature of the wheel hub and extend the service life of the tire and the wheel hub. By reasonably arranging the position and number of through holes, the thermal management performance of the spoke assembly can be further optimized to ensure that the heat can be dissipated evenly and quickly. The arrangement of through holes helps to improve the stress distribution of the spoke assembly and reduce the risk of fatigue damage or structural damage caused by local stress concentration. This helps to improve the reliability and durability of the component. By optimizing the stress distribution, the setting of the through holes can also improve the load-bearing capacity of the spoke component. When subjected to the same load, the component is more stable and less likely to deform.

[0046] In the present invention, the first through hole 21 includes a first arc segment 211 and a second arc segment 212, the first arc segment 211 and the second arc segment 212 are smoothly connected; the curvature of the second arc segment 212 is greater than that of the first arc segment 211; that is, the first through hole 21 is similar to a cross-sectional view of an egg along its long axis, and the second through hole 22 and the third through hole 23 are arranged so that the connecting part therebetween forms a catenary structure, that is, the present invention provides a ventilated automobile wheel hub based on an egg shape and a catenary shape, aiming to improve the overall mechanical properties and fatigue resistance of the wheel hub, while optimizing the heat dissipation performance of the wheel hub. The egg-shaped design and the catenary spoke design can effectively withstand and disperse pressure, thereby increasing the stability and load-bearing capacity of the wheel hub. The egg-shaped design and catenary spoke design can very effectively cope with stress in different directions, prevent stress concentration, and extend the service life of the wheel hub. The alternating design of egg-shaped and catenary vents of different sizes and shapes can reduce the poor heat dissipation effect in local areas of the wheel hub, improve the heat dissipation performance of the wheel hub, and help improve the driving performance and braking performance of the car.

[0047] That is, the utility model discloses an automobile wheel hub, comprising a front wheel hub steel rim (i.e., a first wheel hub rim 11), a wheel hub bead seat (i.e., a bead seat 13) and a rear wheel hub steel rim (i.e., a second wheel hub rim 12) which are connected in sequence, the front wheel hub steel rim (i.e., the first wheel hub rim 11) is provided with a wheel hub pressing frame (i.e., a spoke assembly 2) and a wheel hub shaft ring (a spoke inner ring 4); the wheel hub pressing frame comprises spokes arranged at even intervals (the connecting parts between the first through hole 21 and the second through hole 22 and the third through hole 23 can be regarded as spokes), different types of air ducts are provided between the spokes, and the spokes have fillets bent toward the center so as to reduce wind resistance when the wheel rotates. In the utility model, the front wheel hub steel ring, wheel hub pressure frame, wheel hub shaft ring and spokes are forged as a whole, and the structure is stable and durable; air ducts are formed between the spokes to increase the heat dissipation capacity of the wheel hub, and the air ducts have two shapes, an egg and a catenary, which enhance the overall pressure resistance of the wheel hub and improve the stability and durability of the vehicle; the wheel hub shaft ring has evenly distributed air vents, which are shaped like a catenary, which increases stability, and the position of the air vents faces the brake disc, which can effectively improve the heat dissipation capacity of the brake disc.

[0048] In addition, the utility model also discloses a car, comprising the car wheel hub of the utility model.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automobile wheel hub, characterized in that: It comprises a hub body (1), one side of which is provided with a spoke assembly (2); The spoke assembly (2) is provided with a plurality of first through holes (21), and a second through hole (22) and a third through hole (23) are provided between two adjacent first through holes (21); The second through hole (22) and the third through hole (23) are arranged along the radial direction of the hub body (1); The first through hole (21) comprises a first circular arc segment (211) and a second circular arc segment (212); the first circular arc segment (211) and the second circular arc segment (212) are smoothly connected; the curvature of the second circular arc segment (212) is greater than the curvature of the first circular arc segment (211); and the second circular arc segment (212) is arranged close to the axis of the hub body (1).

2. The automobile wheel hub according to claim 1, characterized in that: The wheel hub body (1) comprises a first wheel hub ring (11), a second wheel hub ring (12) and a bead seat (13) arranged between the first wheel hub ring (11) and the second wheel hub ring (12); the spoke assembly (2) is connected to the first wheel hub ring (11).

3. The automobile wheel hub according to claim 2, characterized in that: The spoke assembly (2) comprises a spoke outer ring (3) and a spoke inner ring (4) which are arranged concentrically; the spoke outer ring (3) is connected to the first hub ring (11); the first arc segment (211) is arranged on the spoke outer ring (3), and the second arc segment (212) is arranged on the spoke inner ring (4).

4. The automobile wheel hub according to claim 3, characterized in that: The second through hole (22) is arranged close to the spoke outer ring (3), and the third through hole (23) is arranged close to the spoke inner ring (4).

5. The automobile wheel hub according to claim 3, characterized in that: The second through hole (22) comprises a third circular arc segment (221) and a fourth circular arc segment (222) which are connected to each other, the third circular arc segment (221) and the fourth circular arc segment (222) having different curvatures; and the fourth circular arc segment (222) is arranged on the spoke outer ring (3).

6. The automobile wheel hub according to claim 5, characterized in that: The fourth circular arc segment (222) is arranged concentrically with the spoke outer ring (3).

7. The automobile wheel hub according to claim 5, characterized in that: The curvature of the fourth circular arc segment (222) is greater than the curvature of the third circular arc segment (221).

8. The automobile wheel hub according to claim 1, characterized in that: The cross-sectional area of ​​the second through hole (22) is greater than the cross-sectional area of ​​the third through hole (23).

9. The automobile wheel hub according to claim 1, characterized in that: Two adjacent first through holes (21) are symmetrically arranged on both sides of the second through hole (22) and the third through hole (23).

10. An automobile, characterized in that: An automobile wheel hub comprising any one of claims 1 to 9.

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