Wheel rim structure and vehicle

Abstract

The application discloses a kind of wheel rim structure and vehicle, the wheel rim structure, comprising: wheel rim body, the wheel rim body includes center part and multiple leaf body parts, multiple the leaf body parts are distributed around the center part and along the radial direction of the center part and are arranged, wheel rim mouth is formed between adjacent two the leaf body parts, the wheel rim mouth includes inner mouth area and outer mouth area sequentially distributed from inside to outside along the radial direction of center part;Wheel rim cover plate is connected to one side of the wheel rim body and covers the wheel rim body from the one side, the wheel rim cover plate is provided with cover plate opening, the wheel rim cover plate blocks the outer mouth area, the opening area of the cover plate opening is less than the wheel rim mouth and is opposite to the inner mouth area.The wheel rim structure of the application can prevent high-pressure gas from overflowing, and can also suck the gas outside the wheel rim structure, so that the airflow flows closely to the vehicle body, which can stabilize the air pressure inside and outside the wheel rim structure, effectively reduce the wind resistance, and has high and stable performance.

Description

Technical Field

[0001] This invention relates to the field of vehicle manufacturing technology, and in particular to a rim structure and a vehicle having the rim structure. Background Technology

[0002] Generally, aerodynamic rims reduce wind resistance by decreasing the airflow through the rim and improving its flatness. Existing products have little or no step difference between the spokes and the rim cover plate.

[0003] In the relevant technologies, the outer side of the wheel rim structure is not covered by a wheel rim cover plate; and the wheel spokes are used to cover the opening of the wheel rim cover plate to reduce wind resistance. The wheel spokes are not used as centrifugal fan blades, but only to seal the opening to reduce wind resistance. In addition, the wind resistance is reduced by drawing air inward through the wheel rim. However, when the vehicle is running, the high-speed airflow cannot be too close to the wheel rim, which requires a conservative design, increases the design difficulty, and affects the performance improvement. Therefore, there is room for improvement. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a wheel rim structure that can prevent high-pressure gas from leaking out and can draw in gas from the outside of the wheel rim structure, so that the airflow flows closely to the vehicle body. In this way, the air pressure inside and outside the wheel rim structure can be stabilized, effectively reducing wind resistance. Moreover, it has low design difficulty, high performance, and stable performance.

[0005] According to an embodiment of the present invention, a rim structure includes: a rim body, the rim body including a central portion and a plurality of blade portions, the plurality of blade portions being distributed around the central portion and extending radially along the central portion, a rim opening being formed between two adjacent blade portions, the rim opening including an inner opening area and an outer opening area distributed radially from the inside to the outside along the central portion; and a rim cover plate, the rim cover plate being connected to one side of the rim body and covering the rim body from the one side, the rim cover plate having a cover plate opening, the rim cover plate obscuring the outer opening area, the opening area of ​​the cover plate opening being smaller than the rim opening and directly opposite the inner opening area.

[0006] According to the wheel rim structure of the present invention, by providing a wheel rim cover plate on the outside of the wheel rim body, the outer opening area of ​​the wheel rim body can be blocked, which can prevent high-pressure gas from overflowing. Moreover, the gas outside the wheel rim cover plate can be drawn in through the opening of the cover plate, so that the airflow flows closely to the vehicle body. In this way, the air pressure inside and outside the wheel rim structure can be stabilized, effectively reducing wind resistance. It is also easy to design, has high performance and stable performance, and reduces research and development costs.

[0007] According to some embodiments of the rim structure of the present invention, the cover plate has multiple openings, and the multiple cover plate openings correspond one-to-one with the multiple rim openings. The rim cover plate has a blocking portion between any two adjacent cover plate openings. The blocking portion blocks the outside of the blade portion. The width of the blocking portion along the circumferential direction of the rim structure is greater than the width of the blade portion along the circumferential direction of the rim structure.

[0008] According to some embodiments of the rim structure of the present invention, the blocking portion further blocks at least a portion of the two rim openings adjacent to the blade portion;

[0009] Wherein, in the rotational direction along the rim structure, the blocking width of the blocking part on the rim opening located in front of the blade body is greater than the blocking width on the rim opening located in rear of the blade body.

[0010] According to some embodiments of the rim structure of the present invention, the blocking width of the blocking part on the rim opening located on the front side of the blade body is D1, which satisfies: 20mm≤D1≤150mm;

[0011] And / or, the blocking width of the blocking part on the rim opening located on the rear side of the blade body is D2, which satisfies: 5mm≤D2≤150mm.

[0012] According to some embodiments of the rim structure of the present invention, the distance between the side of the blade portion away from the rim cover plate and the rim cover plate is L1, which satisfies: 30mm≤L1≤60mm.

[0013] According to some embodiments of the rim structure of the present invention, the width of the rim cover plate blocking the outer opening area along the radial direction of the center portion is L2, which satisfies: 50mm≤L2≤150mm.

[0014] According to some embodiments of the present invention, the rim cover plate has a side facing away from the rim body, including a main surface and a concave surface. The opening of the cover plate passes through the main surface. The main surface is distributed around the concave surface. The main surface covers the outer side of the blade portion. The concave surface covers the outer side of the center portion. The concave surface is constructed as a curved surface that is concave towards the center.

[0015] According to some embodiments of the rim structure of the present invention, an arc-shaped transition surface is formed at the connection between the main surface and the concave surface;

[0016] Wherein, the distance between the cover plate opening and the arc-shaped transition surface is L3, satisfying: 0mm≤L3≤20mm; and / or, the concave surface is provided with a connecting hole, the distance between the connecting hole and the arc-shaped transition surface is L4, satisfying: 10mm≤L4≤20mm.

[0017] According to some embodiments of the rim structure of the present invention, an inner curved surface is formed on the side of the cover plate opening facing the blade portion;

[0018] And / or, the edge of the cover plate opening has an outer rounded shape on the side opposite to the blade body.

[0019] The present invention also proposes a vehicle.

[0020] The vehicle according to an embodiment of the present invention is provided with a rim structure according to any of the above embodiments.

[0021] The vehicle and the aforementioned wheel rim structure have the same advantages over the prior art, which will not be repeated here.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of the rim structure according to an embodiment of the present invention. Figure 1 (Inside the vehicle body);

[0025] Figure 2 This is a partial structural schematic diagram (inner side of the vehicle body) of the wheel rim structure according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the rim structure according to an embodiment of the present invention. Figure 2 (Inside the vehicle body);

[0027] Figure 4 This is a schematic diagram of the outer structure of the wheel rim structure according to an embodiment of the present invention (outer side of the vehicle body);

[0028] Figure 5 This is a cross-sectional view of the rim structure according to an embodiment of the present invention;

[0029] Figure 6 This is an axonometric view (outer side of the vehicle body) of the wheel rim structure according to an embodiment of the present invention;

[0030] Figure 7 This is a partial structural schematic diagram (outer side of the vehicle body) of the wheel rim structure according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the rim structure (outer side of the vehicle body) according to another embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the rim structure (inner side of the vehicle body) according to another embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram illustrating the airflow principle of a wheel rim structure assembled onto a vehicle body according to an embodiment of the present invention.

[0034] Figure label:

[0035] Rim structure 100,

[0036] Wheel rim body 1, center section 11, blade section 12, wheel rim opening 121, inner opening area 122, outer opening area 123, inner opening 13.

[0037] 2. Rim cover plate, 21. Cover plate opening, 22. Covering part, 23. Main surface, 24. Concave surface, 241. Connecting hole, 25. Arc-shaped transition surface, 26. Inner curved surface, 27. Outer rounded surface, 28. Blade.

[0038] Tire 200. Detailed Implementation

[0039] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] The following is for reference. Figures 1-10 The wheel rim structure 100 according to an embodiment of the present invention is described in which the wheel rim body 1 and the wheel rim cover plate 2 are connected and fitted together to cover the outer opening area 123 of the wheel rim body 1. When the wheel rim structure 100 rotates, it prevents high-pressure gas from overflowing and can draw in some of the gas outside the wheel rim structure 100, so as to stabilize the air pressure inside and outside the wheel rim structure 100, reduce the resistance of vehicle driving, and improve the driving performance of the vehicle.

[0043] like Figures 1-10 As shown, a rim structure 100 according to an embodiment of the present invention includes: a rim body 1 and a rim cover plate 2.

[0044] The rim body 1 includes a central portion 11 and a plurality of blade portions 12, which are distributed around the central portion 11 and extend radially along the central portion 11.

[0045] The rim structure 100 serves as the carrier of the wheel, increasing the structural strength of the tire 200 and supporting the weight of the vehicle body. Specifically, the rim body 1 is constructed as a circular frame, comprising a central portion 11 and multiple blade portions 12. The multiple blade portions 12 are located radially outward from the central portion 11 and are evenly spaced around the central portion 11, with each blade portion 12 extending radially along the central portion 11. In actual design, such as... Figure 1 As shown, there are five blade sections 12, which are evenly spaced around the central section 11. This ensures that each blade section 12 is subjected to uniform force and maintains a regular and uniform structure. The number of blade sections 12 can be designed according to actual needs and is not limited to that described in this embodiment.

[0046] A rim opening 121 is formed between two adjacent blade sections 12, i.e., multiple rim openings 121 are formed. These multiple rim openings 121 are spaced apart. Each rim opening 121 includes an inner opening region 122 and an outer opening region 123 distributed radially from the inside out along the center section 11. Specifically, each rim opening 121 comprises two parts: an inner opening region 122 and an outer opening region 123. The rim opening 121 is axially penetrating the center section 11, facilitating the inflow and outflow of gas. In the radial direction of the center section 11, the inner opening region 122 is closer to the center section 11, and the outer opening region 123 is farther from the center section 11. Furthermore, the area of ​​the inner opening region 122 is smaller than the area of ​​the outer opening region 123. Figure 1 As shown, there are five rim openings 121, the number of which corresponds to the number of blade sections 12. The number of rim openings 121 can be designed according to actual needs and is not limited to that described in this embodiment.

[0047] The rim cover plate 2 is connected to one side of the rim body 1 and covers the rim body 1 from one side. If the rim cover plate 2 is connected to the outside of the rim body 1 and the connection between the two is detachable, the rim body 1 can be hidden inside the rim cover plate 2, and the exterior of the rim structure 100 is neat and the structure is not complicated.

[0048] The rim cover plate 2 has a cover plate opening 21, which covers the outer opening area 123. The opening area of ​​the cover plate opening 21 is smaller than that of the rim opening 121 and is directly opposite to the inner opening area 122. Therefore, during installation, after aligning the cover plate opening 21 with the inner opening area 122 of the rim opening 121, the rim cover plate 2 and the rim body 1 are installed, so that the outer circumference of the rim cover plate 2 can cover multiple outer opening areas 123. The gas flow principle at the rim structure 100 during vehicle operation is as follows: Figure 10 As shown, when the rim structure 100 rotates, it will cause the gas inside the rim structure 100 to rotate. Due to centrifugal force, a negative pressure is formed in the middle area of ​​the blade part 12, that is, a negative pressure is formed in the inner opening area 122 of the rim opening 121, and a high pressure is formed in the outer opening area 123. The opening area of ​​the cover plate opening 21 is smaller than the rim opening 121. In this way, the rim cover plate 2 can block the high pressure area and prevent the gas from overflowing. At the same time, the gas outside the cover plate opening 21 is drawn into the rim cover plate 2, so that the air pressure inside and outside the rim cover plate 2 tends to be balanced, thereby reducing the resistance when the vehicle is running.

[0049] Therefore, in this embodiment, the rim structure 100 utilizes the principle of a semi-centrifugal fan. When the rim body 1 rotates, it drives the airflow inside the rim structure 100 to rotate. Due to the centrifugal force forming a negative pressure in the middle area of ​​the rim body 1, external gas can be drawn into the rim cover plate 2, causing the high-speed airflow to approach the outer side of the rim cover plate 2. As the high-speed airflow approaches the rim structure 100, its influence on the rim opening 121 gradually increases, and its disruption of the flow field of the rotating airflow inside the rim cover plate 2 gradually increases, reducing the negative pressure formed by the centrifugal force. At the same time, the impact on the blade part 12 increases, increasing the pressure at the rim opening 121. The suction capacity of the semi-centrifugal fan decreases, and the high-speed airflow forms a stable equilibrium near the outer side of the rim cover plate 2. This is a steady-state design that ensures the performance requirements of vehicle operation.

[0050] According to the embodiment of the present invention, the wheel rim structure 100 can cover the outer opening area 123 of the wheel rim body 1 by providing a wheel rim cover plate 2 on the outer side of the wheel rim body 1, which can prevent high pressure gas from overflowing. Moreover, the gas outside the wheel rim cover plate 2 can be drawn in through the cover plate opening 21, so that the airflow flows closely to the vehicle body. In this way, the air pressure inside and outside the wheel rim structure 100 can be stabilized, effectively reducing wind resistance. It is also easy to design, has high performance and stable performance, and reduces research and development costs.

[0051] In some embodiments, there are multiple cover plate openings 21, and the multiple cover plate openings 21 correspond one-to-one with multiple rim openings 121. This helps to improve the installation accuracy of the rim body 1 and the rim cover plate 2, and ensures that the gas outside the cover plate opening 21 is drawn into the rim cover plate 2. The rim cover plate 2 is provided with a blocking part 22 between any two adjacent cover plate openings 21. The blocking part 22 blocks the outside of the blade part 12. The width of the blocking part 22 along the circumferential direction of the rim structure 100 is greater than the width of the blade part 12 along the circumferential direction of the rim structure 100.

[0052] Specifically, there are multiple cover plate openings 21, which are evenly spaced along the circumference of the rim cover plate 2. The number of cover plate openings 21 is the same as the number of rim openings 121, and the multiple cover plate openings 21 and rim openings 121 are arranged in a one-to-one correspondence. When the rim cover plate 2 is installed with the rim body 1, it can be installed quickly and accurately. There is no obstruction between the cover plate openings 21 and the rim openings 121, which allows the gas outside the rim cover plate 2 to be drawn in through the multiple cover plate openings 21, and can quickly achieve the balance of air pressure inside and outside the rim cover plate 2.

[0053] Furthermore, a blocking portion 22 is formed between any two adjacent cover plate openings 21, and the blocking portion 22 corresponds to the blade portion 12. Multiple cover plate openings 21 can be formed on the rim cover plate 2, and the blocking portion 22 is a part of the structure of the rim cover plate 2, thus simplifying the processing of the rim cover plate 2. After the rim cover plate 2 and the rim body 1 are installed, the blocking portion 22 blocks the outside of the blade portion 12, and the width of the blocking portion 22 in the circumferential direction of the rim structure 100 is greater than the width of the blade portion 12 in the circumferential direction of the rim structure 100, so that the blade portion 12 is hidden inside the blocking portion 22, making the external structure of the rim structure 100 more regular.

[0054] In some embodiments, the shielding portion 22 also shields at least a portion of the two rim openings 121 adjacent to the blade portion 12, so that the shielding portion 22 can shield the outer opening area 123 of the two rim openings 121 respectively, thereby reducing the leakage of high-pressure gas.

[0055] In the rotation direction along the rim structure 100, the blocking width of the blocking part 22 on the rim opening 121 located in front of the blade body 12 is greater than the blocking width on the rim opening 121 located behind the blade body 12. As a result, the blocking part 22 can block the high-pressure area near the rim opening 121 on the front side of the blade body 12, effectively preventing high-pressure gas from overflowing.

[0056] Specifically, the size of the cover plate opening 21 is smaller than the size of the rim opening 121, which increases the blocking area of ​​the blocking part 22. It can block at least a portion of the two adjacent rim openings 121. When the rim structure 100 rotates, the blocking width of the blocking part 22 at the rim opening 121 near the front side of the blade body 12 is larger, and the blocking width of the blocking part 22 at the rim opening 121 near the rear side of the blade body 12 is smaller. That is, the cover plate opening 21 is set near the rear side of the blade body 12. In this way, the high-pressure gas at the rim opening 121 at the front side of the blade body 12 can be effectively blocked, effectively preventing the high-pressure gas from overflowing. Moreover, the two rim openings 121 at the rear side of the blade body 12 are low-pressure areas, which can allow external gas to be drawn into the rim cover plate 2. The structure is simple, easy to implement, and has low development cost.

[0057] In some embodiments, the blocking width of the blocking portion 22 on the rim opening 121 located on the front side of the blade portion 12 is D1, satisfying: 20mm≤D1≤150mm, specifically, as shown in... Figure 3 As shown, the blocking width of the shielding part 22 at the rim opening 121 on the front side of the blade body 12 is set to D1. The value of D1 can be 20mm, 50mm, 100mm, etc. By setting the blocking width of the shielding part 22 at the rim opening 121 on the front side of the blade body 12 to the above values, the size of the cover opening 21 near the rim opening 121 can be adjusted, and the high-pressure gas at the rim opening 121 can be blocked to prevent the high-pressure gas from overflowing and causing greater resistance to the vehicle's movement.

[0058] Therefore, when the blocking width D1 of the blocking part 22 on the rim opening 121 located in front of the blade part 12 satisfies: 20mm≤D1≤150mm, the air resistance of the vehicle can be effectively reduced. Furthermore, the value of D1 is not limited to that described in this embodiment and can be set according to actual needs and space availability, as long as the requirements are met.

[0059] And / or, the blocking width of the blocking part 22 on the rim opening 121 located behind the blade body part 12 is D2, satisfying: 5mm≤D2≤150mm, specifically, as follows: Figure 3 As shown, the blocking width of the shielding part 22 at the rim opening 121 behind the blade body 12 is set to D2. The value of D2 can be 5mm, 50mm, 100mm, etc. By setting the blocking width of the shielding part 22 at the rim opening 121 behind the blade body 12 to the above values, the size of the rear side of the cover plate opening 21 can be adjusted, thereby controlling the air volume entering the inner side from the outer side of the rim cover plate 2. The setting method is simple and reasonable.

[0060] Therefore, when the blocking width D2 of the blocking part 22 on the rim opening 121 located behind the blade part 12 satisfies: 5mm≤D1≤150mm, the air intake volume can be easily controlled according to actual needs. Furthermore, the value of D2 is not limited to that described in this embodiment and can be set according to actual needs and space size, as long as the requirements are met.

[0061] In some embodiments, the distance between the side of the blade portion 12 away from the rim cover plate 2 and the rim cover plate 2 is L1, satisfying: 30mm≤L1≤60mm.

[0062] Specifically, such as Figure 2 As shown, there is a height difference between the inner side of the blade portion 12 and the inner side of the rim cover plate 2. The distance between the side of the blade portion 12 facing away from the rim cover plate 2 and the rim cover plate 2 is set as L1. L1 can be 30mm, 50mm, 60mm, etc. By setting the distance between the side of the blade portion 12 facing away from the rim cover plate 2 and the rim cover plate 2 to the above values, the axial thickness of the blade portion 12 can be adjusted, thus allowing for different specifications of the rim body 1, while ensuring the structural strength requirements of the rim body 1 are met. Therefore, the rim cover plate 2 of this embodiment is suitable for various specifications of rim body 1. Furthermore, the value of L1 is not limited to that described in this embodiment and can be set according to actual needs and space requirements, as long as the requirements are met.

[0063] In some embodiments, the width of the rim cover plate 2 covering the outer opening area 123 along the radial direction of the central portion 11 is L2, which satisfies: 50mm≤L2≤150mm.

[0064] Specifically, the rim cover plate 2 is disc-shaped, such as... Figure 4As shown, the shape of the cover opening 21 on the rim cover plate 2 can be a quadrilateral of different types, such as a square, a fan shape, or a circle, resulting in diverse structures. The cover opening 21, on the side furthest from the center and the outermost side of the rim cover plate 2, is used to cover the outer opening area 123 of the rim opening 121. In the radial direction of the center portion 11, the width of the rim cover plate 2 covering the outer opening area 123 is set to L2, which can be 50mm, 70mm, 100mm, etc. Setting the width of the rim cover plate 2 covering the outer opening area 123 to the above values ​​can block high-pressure gas at the rim opening 121, preventing high-pressure gas from escaping and causing significant resistance to vehicle movement.

[0065] Therefore, the width L2 of the wheel rim cover 2 covering the outer opening area 123 satisfies: 50mm≤L2≤150mm, which can effectively reduce the air resistance of the vehicle. Furthermore, the value of L2 is not limited to that described in this embodiment and can be set according to actual needs and space availability, as long as the requirements are met.

[0066] Among them, the more cover plate openings 21 there are, the smaller the circumferential spacing of the cover plate openings 21 is. In this way, the negative pressure area of ​​the blade body 12 can suck in the airflow, and the outer ring of the rim is not needed. When the fewer cover plate openings 21 there are, the larger the circumferential spacing of the cover plate openings 21 is, the outer ring of the rim needs to be set.

[0067] In some embodiments, the side of the rim cover plate 2 away from the rim body 1 includes a main surface 23 and a concave surface 24. The cover plate opening 21 passes through the main surface 23. The main surface 23 is distributed around the concave surface 24. The main surface 23 covers the outside of the blade portion 12, and the concave surface 24 covers the outside of the center portion 11. The concave surface 24 is constructed as a curved surface that is concave towards the center.

[0068] Specifically, the rim cover plate 2 includes a main surface 23 and a concave surface 24, both of which are located on the side of the rim cover plate 2 away from the rim body 1, such as... Figure 6 As shown, the main surface 23 is located circumferentially outside the concave surface 24, and the main surface 23 is distributed around the concave surface 24. Both the main surface 23 and the concave surface 24 extend radially, and the radial width of the main surface 23 is greater than the radial width of the concave surface 24. In this way, the main surface 23 can cover the outside of the blade portion 12, and the concave surface 24 can cover the outside of the center portion 11. Thus, the rim body 1 can be hidden inside the rim cover plate 2, making the structure on one side of the rim cover plate 2 more regular. At the same time, the concave surface 24 is constructed as a curved surface, and the concave surface 24 is recessed towards the center. The difference between the main surface 23 and the concave surface 24 of the rim cover plate 2 can be less than 5mm, that is, a value of 3mm, 4mm, etc. This can reduce wind resistance, and the structure is simple, the design difficulty is low, and the development cost is reduced.

[0069] The cover plate opening 21 is located on the main surface 23 and extends through the main surface 23, so that the gas on the outside of the rim cover plate 2 enters the rim cover plate 2 through the multiple cover plate openings 21 on the main surface 23, and can ensure the structural strength of the rim cover plate 2.

[0070] In some embodiments, an arc-shaped transition surface 25 is formed at the connection between the main surface 23 and the concave surface 24, that is, the two are connected by an arc transition, which makes the connection between the main surface 23 and the concave surface 24 smoother and more seamless, the external structure is more regular, and the wind resistance is reduced.

[0071] The distance between the cover opening 21 and the arc-shaped transition surface 25 is L3, satisfying: 0mm≤L3≤20mm. Specifically, as follows... Figure 7 As shown, the side of the cover plate opening 21 near the center 11 has a certain distance from the arc transition surface 25. This distance is set as L3, and can be 5mm, 10mm, 15mm, etc. Setting the distance between the cover plate opening 21 and the arc transition surface 25 to the above values ​​can ensure that the air from the outside enters the rim cover plate 2. The smaller the distance between the cover plate opening 21 and the arc transition arc, that is, the closer the cover plate opening 21 is to the center of the center 11, the lower the air pressure in the inner opening area 122 at the center. The wind from the outside is more easily drawn into the rim cover plate 2, which can accelerate the gas balance between the inside and outside of the rim cover plate 2.

[0072] And / or, the concave surface 24 is provided with a connecting hole 241, and the distance between the connecting hole 241 and the arc-shaped transition surface 25 is L4, satisfying: 10mm≤L4≤20mm, specifically, as follows Figure 7 As shown, multiple connecting holes 241 are provided on the concave surface 24. The multiple connecting holes 241 can be distributed circumferentially around the center part 11. The distance between the connecting holes 241 and the arc-shaped transition surface 25 is set to L4. L4 can be 12mm, 20mm, etc. Setting the distance between the connecting holes 241 and the arc-shaped transition surface 25 to the above values ​​makes the installation of the connectors more reliable. Thus, by detachably connecting the multiple connectors through the connecting holes 241 to the center part 11 of the rim body 1, the connection and fixation between the rim cover plate 2 and the rim body 1 can be realized. The connection method is simple and reliable.

[0073] In some embodiments, an inner curved surface 26 is formed on the side of the cover opening 21 facing the blade portion 12, and / or an outer rounded surface 27 is formed on the side of the cover opening 21 away from the blade portion 12.

[0074] Specifically, the cover plate opening 21 has transition surfaces on both its edges facing the blade body 12 and its edges away from the blade body 12. These transition surfaces can be constructed as bevels, rounded surfaces, or curved surfaces, etc. Figure 5As shown, the blade body 12 is located inside the rim cover plate 2, that is, an inner curved surface 26 is formed at the inner edge of the cover plate opening 21, and an outer rounded surface 27 is formed at the outer edge of the cover plate opening 21. This prevents the airflow from deflecting inward. The gas flows to the blade body 12 and generates centrifugal force under the rotation of the rim body 1. The inner curved surface 26 and the outer rounded surface 27 make the edge structure of the cover plate opening 21 smooth. The transition surface between the inner and outer edges of the cover plate opening 21 is not limited to that described in this embodiment, as long as the design requirements are met.

[0075] The thickness of the rim cover plate 2 at the cover plate opening 21 is set to L5, and L5 can be 3mm, 5mm, etc., satisfying 3mm≤L4≤12mm, which can ensure the structural strength of the rim cover plate 2 at the cover plate opening 21. At the same time, the thickness at the cover plate opening 21 should not be too large to avoid the structure being too heavy and causing waste of resources. The thickness at the cover plate opening 21 is not limited to the one described in this embodiment, and can also be set to other values.

[0076] Meanwhile, after wind tunnel testing, the drag coefficient of the rim structure 100 in this embodiment is 0.009 lower than that of the fully enclosed rim structure 100 (more than 3% lower in total drag). Its widespread application will contribute to energy conservation and emission reduction. Generally, the drag coefficient of aerodynamic rim structures is slightly higher than that of fully enclosed rim structures, typically by more than 0.002. Therefore, this improves the performance of the rim structure 100, while also saving energy and reducing emissions, meeting design requirements.

[0077] The present invention also proposes a vehicle.

[0078] The vehicle according to the present invention is provided with a rim structure 100 of any of the above embodiments. By providing a rim cover plate 2 on the outside of the rim body 1, the outer opening area 123 of the rim body 1 can be blocked, which can prevent high pressure gas from overflowing. Moreover, the gas outside the rim cover plate 2 can be drawn in through the cover plate opening 21, so that the airflow flows closely to the vehicle body. In this way, the air pressure inside and outside the rim can be stabilized, the wind resistance can be effectively reduced, and the design is simple, the performance is high and stable, and the research and development costs are reduced.

[0079] Furthermore, it should be noted that the blade portion 12 of the rim body 1 can be composed of spokes or blades 28 other than spokes. The blade portion 12 and the rim cover plate 2 can be composed of two or more parts, or they can be composed of a single part, all of which can meet functional requirements. In another embodiment, the rim body 1 is constructed as a steel rim, and used in conjunction with the rim cover plate 2 of this embodiment. Specifically, as follows... Figure 9 As shown, the steel rim has an inner opening 13, and the rim cover plate 2 includes blades 28. The blades 28 are disposed near the side of the steel rim, and the rim cover plate 2 has a cover plate opening 21. As shown... Figure 8 , Figure 9As shown, the inner opening 13 is farther from the center than the cover plate opening 21. When the blade 28 is closer to the inner opening 13 in the direction of rotation, and the blade 28 is farther from the outer opening in the direction of rotation, it can ensure that gas enters the rim cover plate 2, so that the air pressure inside and outside the rim cover plate 2 is stable, thereby reducing the resistance encountered by the vehicle and improving the performance of the rim structure 100.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0081] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rim structure, characterized in that, include: The rim body includes a central portion and multiple blade portions. The multiple blade portions are distributed around the central portion and extend radially along the central portion. A rim opening is formed between two adjacent blade portions. The rim opening includes an inner opening area and an outer opening area that are distributed radially from the inside to the outside of the central portion. A rim cover plate is connected to one side of the rim body and covers the rim body from one side. The rim cover plate has a cover plate opening and covers the outer opening area. The opening area of ​​the cover plate opening is smaller than the rim opening and is directly opposite the inner opening area.

2. The rim structure according to claim 1, characterized in that, The cover plate has multiple openings, and each of the multiple cover plate openings corresponds to a multiple of the wheel rim openings. The wheel rim cover plate has a blocking part between any two adjacent cover plate openings. The blocking part blocks the outside of the blade body. The width of the blocking part along the circumferential direction of the wheel rim structure is greater than the width of the blade body along the circumferential direction of the wheel rim structure.

3. The rim structure according to claim 2, characterized in that, The shielding portion also shields at least a portion of the two rim openings adjacent to the blade body portion; Wherein, in the rotational direction along the rim structure, the blocking width of the blocking part on the rim opening located in front of the blade body is greater than the blocking width on the rim opening located in rear of the blade body.

4. The rim structure according to claim 3, characterized in that, The blocking width of the blocking part on the rim opening located on the front side of the blade body is D1, which satisfies: 20mm≤D1≤150mm; And / or, the blocking width of the blocking part on the rim opening located on the rear side of the blade body is D2, which satisfies: 5mm≤D2≤150mm.

5. The rim structure according to claim 1, characterized in that, The distance between the side of the blade portion away from the rim cover plate and the rim cover plate is L1, which satisfies: 30mm≤L1≤60mm.

6. The rim structure according to claim 1, characterized in that, Along the radial direction of the center portion, the width of the rim cover plate that obstructs the outer opening area is L2, satisfying: 50mm≤L2≤150mm.

7. The rim structure according to claim 1, characterized in that, The rim cover plate has a main surface and a concave surface on the side away from the rim body. The opening of the cover plate passes through the main surface. The main surface is distributed around the concave surface. The main surface covers the outside of the blade body. The concave surface covers the outside of the center part. The concave surface is constructed as a curved surface that is concave towards the center.

8. The rim structure according to claim 7, characterized in that, An arc-shaped transition surface is formed at the connection between the main surface and the concave surface; Wherein, the distance between the cover plate opening and the arc-shaped transition surface is L3, satisfying: 0mm≤L3≤20mm; and / or, the concave surface is provided with a connecting hole, the distance between the connecting hole and the arc-shaped transition surface is L4, satisfying: 10mm≤L4≤20mm.

9. The rim structure according to claim 1, characterized in that, An inner curved surface is formed at the edge of the cover plate opening on the side facing the blade body. And / or, the edge of the cover plate opening has an outer rounded shape on the side opposite to the blade body.

10. A vehicle, characterized in that, The wheel rim structure is provided as described in any one of claims 1-9.

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