Hub assembly and vehicle

Abstract

The invention provides a hub assembly and a vehicle, the hub assembly comprises a rim and a central disc which are coaxially arranged, and a plurality of spokes connected with the central disc and the rim in the circumferential direction, a ventilation window is arranged between every two adjacent spokes, the hub assembly further comprises a plurality of blades, one blade is arranged in each ventilation window, the blades cover the ventilation windows, and the blades are arranged in the ventilation windows. The spokes are rotatably connected with the two adjacent spokes; the first end of one clamping pin is connected with one blade; and the driving assembly is embedded in the central disc, is in driving connection with the second end of each clamping foot, and drives the clamping feet to be close to or away from the central disc. By the adoption of the brake system, when ventilation and heat dissipation are not needed for the brake system, the blades completely shield the ventilation windows, when ventilation and heat dissipation are needed, the blades release part of the ventilation windows to enable airflow to circulate, switching of the two function scenes of reducing the wind resistance of the whole vehicle and enhancing heat dissipation and ventilation of the brake is achieved, it is guaranteed that the wind resistance reducing effect is maximized, and the service life of the brake system is prolonged. And normal ventilation and heat dissipation of the braking system can be ensured when needed.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically to a wheel hub assembly and a vehicle. Background Technology

[0002] Wheel hubs are crucial vehicle components, playing a vital role in energy conservation and driving safety, especially in optimizing vehicle aerodynamics. Wheel hub design has always been a key aspect for both gasoline-powered and electric vehicles. Due to structural limitations, traditional wheel hubs are significantly affected by wind resistance at high speeds, increasing overall vehicle energy consumption and hindering the fuel economy of gasoline vehicles and the range of electric vehicles. Therefore, adjusting the wheel hub structure to reduce wind resistance has become a key problem for engineers to solve.

[0003] Currently, the main method for reducing wind resistance is to install obstructing blades inside the ventilation window between two adjacent spokes. These blades guide airflow to reduce turbulence, thereby reducing wind resistance and energy consumption. However, the ventilation window is originally designed for cooling the braking system. The blades would obstruct airflow and affect the cooling of the braking system. In order to balance wind resistance reduction and heat dissipation, the blades do not completely cover the ventilation window. Therefore, current technology cannot maximize the effect of reducing wind resistance. Summary of the Invention

[0004] In view of this, the present invention provides a wheel hub assembly and a vehicle to solve the above-mentioned technical problems.

[0005] The wheel hub assembly provided by the present invention includes a rim and a center disc arranged coaxially, and a plurality of spokes connecting the center disc and the rim circumferentially, wherein a ventilation window is provided between each pair of adjacent spokes, and further includes:

[0006] Multiple blades, one of which is provided in each ventilation window, the blades covering the ventilation window, and the blades being rotatably connected to two adjacent spokes; Multiple locking pins, with the first end of one of the locking pins connected to one of the blades; A driving component is embedded in the central disk and is driven to the second end of each of the latches, driving the latches to move closer to or away from the central disk.

[0007] Optionally, the driving component includes: A cylinder barrel, which is embedded in the central disk, has a receiving cavity inside, and has an opening at its first end; A piston, the first end of which is disposed in the receiving cavity, the second end of which extends out of the opening, the outer wall of which circumferentially abuts against the inner wall of which is circumferentially, and the piston can reciprocate relative to the cylinder, the piston and the cylinder enclosing an exhaust chamber; A clamping plate is fixedly connected to the second end face of the piston, and a gap is maintained between the clamping plate and the piston. The second end of each of the clamping feet extends into the gap. The trachea is connected to the air cavity.

[0008] Optionally, a limit block is fixed on the inner wall of the first end of the cylinder. A limiting ring is fixed on the circumferential outer wall of the piston, and the outer circumferential wall of the limiting ring abuts against the inner circumferential wall of the cylinder.

[0009] Optionally, the wheel hub assembly further includes a spring, the first end of which is fixedly connected to the limiting block, and the second end of which is fixedly connected to the limiting ring.

[0010] Optionally, the wheel assembly further includes: A guide sleeve, which is fixedly connected to the limiting block; A guide post is fixedly connected to the limiting ring. The guide post is inserted into the guide sleeve and can reciprocate along the guide sleeve. The spring is sleeved on the guide sleeve and the guide post.

[0011] Optionally, a limiting plate is fixed to the outer wall of the second end of the piston, and the outer diameter of the limiting plate is larger than the inner diameter of the cylinder.

[0012] Optionally, each of the blades is fixed with a rotating shaft; Each of the spokes is fixed with a boss, and the boss has a hole. The two opposite ends of the rotating shaft are respectively inserted into the holes of two adjacent bosses and can rotate within the holes.

[0013] Optionally, each of the clamping feet includes a first fixed section and a second fixed section connected together, the first fixed section and the second fixed section being arranged at an angle, the free end of the first fixed section being connected to the blade, and the free end of the second fixed section being inserted into the gap.

[0014] Optionally, the wheel hub assembly further includes: an air tank, the air outlet of which is connected to the air pipe; The air pipe is equipped with valves and an air pump.

[0015] The present invention also provides a vehicle comprising the wheel hub assembly described in any of the preceding claims.

[0016] The technical solutions provided by this invention have at least the following beneficial effects compared with the prior art: The wheel hub assembly and vehicle of the present invention drive the blades to rotate relative to the spokes via the drive assembly. When ventilation and heat dissipation of the braking system are not required, the blades completely block the ventilation windows between adjacent spokes. When ventilation and heat dissipation of the braking system are required, the blades do not completely block the ventilation windows, but partially open the ventilation windows to allow airflow. This achieves the switching between two functional scenarios: reducing the overall vehicle drag and enhancing brake cooling and ventilation. It maximizes the drag reduction effect of the blades while ensuring normal ventilation and heat dissipation of the braking system when needed. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a wheel hub assembly according to an embodiment of the present invention; Figure 2 for Figure 1 A cross-sectional view of the wheel hub assembly shown; Figure 3 for Figure 2 An enlarged view of the sectional view shown.

[0018] Figure label: 1: Rim; 2: Center plate; 3: Spoke; 4: Blade; 5: Clamping foot; 51: First fixed section; 52: Second fixed section; 6: Drive assembly; 61: Cylinder; 62: Piston; 63: Clamping plate; 64: Air pipe; 65: Air chamber; 7: Limiting block; 8: Limiting ring; 9: Spring; 10: Guide sleeve; 11: Limiting plate; 12: Boss. Detailed Implementation

[0019] The embodiments of the present invention will be further described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of the present invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Figure 1 This is a schematic diagram of a wheel hub assembly according to an embodiment of the present invention; Figure 2 for Figure 1 A cross-sectional view of the wheel hub assembly shown; Figure 3 for Figure 2 An enlarged view of the sectional view shown.

[0022] like Figures 1-3 As shown, the wheel hub assembly includes a rim 1 and a center disc 2 coaxially arranged, and a plurality of spokes 3 connecting the center disc 2 and the rim 1 circumferentially. A ventilation window is provided between each two adjacent spokes 3. The assembly also includes a plurality of blades 4, a plurality of retainers 5, and a drive assembly 6. Each ventilation window contains one blade 4, which covers the ventilation window. The blade 4 is rotatably connected to two adjacent spokes 3. The first end of one retainer 5 is connected to one blade 4. The drive assembly 6 is embedded in the center disc 2 and is drivenly connected to the second end of each retainer 5, driving the retainer 5 to move closer to or away from the center disc 2.

[0023] When the vehicle is in motion and there is no braking requirement, the drive assembly 6 is activated, causing the drive assembly 6 to drive multiple locking feet 5 to move simultaneously in the first direction, so that multiple blades 4 connected one-to-one with each locking foot 5 rotate relative to the spokes 3. After the drive assembly 6 has been working for a certain period of time, it is determined that each blade 4 completely blocks the ventilation window between two adjacent spokes 3, and the state of each blade 4 completely blocking the ventilation window is maintained.

[0024] When the vehicle requires braking, the drive assembly 6 is restarted, causing it to work in reverse. This drives multiple locking feet 5 to move simultaneously in a second direction opposite to the first direction, causing multiple blades 4, which are connected one-to-one with each locking foot 5, to rotate in the opposite direction relative to the spokes 3. After the drive assembly 6 has been working for a certain period of time, it is determined that the ventilation window between two adjacent spokes 3 where each blade 4 is located has been released. Once the ventilation and heat dissipation requirements of the braking system are met, the drive assembly 6 is shut off, maintaining the state of the ventilation window where each blade 4 is located.

[0025] The wheel hub assembly of this invention uses the drive component 6 to drive the blades 4 to rotate relative to the spokes 3. When ventilation and heat dissipation of the braking system are not required, the blades 4 completely block the ventilation windows between the two adjacent spokes 3. When ventilation and heat dissipation of the braking system are required, the blades 4 do not completely block the ventilation windows, but release part of the ventilation windows to allow airflow. This achieves the switching between two functional scenarios: reducing the overall vehicle wind resistance and enhancing brake heat dissipation and ventilation. It maximizes the wind resistance reduction effect of the blades 4 and ensures normal ventilation and heat dissipation of the braking system when needed.

[0026] like Figures 1-3 As shown, in this embodiment, the outer rim 1 and the inner center disk 2 are coaxially arranged. Five spokes 3 are evenly spaced between the rim 1 and the center disk 2. Each ventilation window between two adjacent spokes 3 has a blade 4 matching the cross-section of the ventilation window. When the blade 4 and each spoke 3 are on the same approximate plane, they can completely block the ventilation window. Simultaneously, the blade 4 is rotatably connected to two adjacent spokes 3, and the spokes 3 and the rim 1 do not interfere with the blade 4 during rotation. Each blade 4 has a fixed locking foot 5 at one end facing the center disk 2. The second end of each locking foot 5, i.e., the end away from the corresponding blade 4, is driven by the drive assembly 6. Driven by the drive assembly 6, the blade moves closer to or away from the center disk 2, and simultaneously rotates the corresponding blade 4 relative to the spokes 3, thus changing the state of the blade 4 completely blocking or partially releasing the ventilation window. Figure 2 As shown, in this embodiment, a through hole is provided through the axis of the central disk 2, and the drive component 6 is embedded in the through hole. The central disk 2 also has clearance holes corresponding to the positions of each blade 4, communicating with the through hole. The clamping feet 5 connected to the blade 4 pass through the corresponding clearance holes and enter the central through hole, achieving a drive connection with the drive component 6 at the through hole. Figure 1 and Figure 2 As shown, in the initial state, the side of the clamping foot 5 connected to the drive assembly 6 is vertically positioned, and the blade 4 completely blocks the ventilation window where it is located. When the drive assembly 6 drives the clamping foot 5 along... Figure 2 When the blade moves from center to left, the locking foot 5 moves simultaneously, causing the blade 4 to move along the same direction. Figure 1The center rotates outwards, thus releasing part of the ventilation window, allowing airflow to enter the side where the braking system is located for ventilation and heat dissipation. When ventilation and heat dissipation are not needed, the drive assembly 6 is activated again, causing it to work in reverse, driving the locking pin 5 along... Figure 2 As the center moves to the right, the locking foot 5 moves, causing the blade 4 to move along... Figure 1 The drive assembly 6 rotates in the direction of the image until the blade 4 completely blocks the ventilation window it is in. The locking feet 5 are made of a material with a certain degree of elasticity, so that while moving linearly with the drive assembly 6, they can also cause the blade 4 to deflect to a certain degree. Depending on the actual application, the drive assembly 6 can be composed of any structure, as long as it can simultaneously drive all the locking feet 5 to move, and can cause the blade 4 connected to the locking feet 5 to rotate relative to the spokes 3, and can achieve the switching between the two functional scenarios of completely blocking or releasing the ventilation window by the blade 4, thereby reducing the wind resistance of the vehicle and enhancing the heat dissipation and ventilation of the brakes. The number of blades 4 and locking feet 5 can be adjusted according to the number of ventilation windows, the shape and size of the blades 4 can be adjusted according to the shape and size of the ventilation windows, and the specific shape and size of the locking feet 5 can be adjusted, as long as they can simultaneously connect the blades 4 and the drive assembly 6, and can cause the blades 4 to rotate relative to the spokes 3 under the drive of the drive assembly 6. In addition, the drive assembly 6 is installed in the center disk 2 located in the center position, which can effectively solve the dynamic imbalance problem caused by the addition of components.

[0027] Optionally, the drive assembly 6 includes a cylinder 61, a piston 62, a clamping plate 63, and an air pipe 64. The cylinder 61 is embedded in the central disk 2, and a receiving cavity is provided inside the cylinder 61, with an opening at its first end. The first end of the piston 62 is disposed in the receiving cavity, and the second end of the piston 62 extends out of the opening. The outer circumferential wall of the piston 62 abuts against the inner circumferential wall of the cylinder 61, and the piston 62 can reciprocate relative to the cylinder 61. The piston 62 and the cylinder 61 enclose an air chamber 65. The clamping plate 63 is fixedly connected to the second end face of the piston 62, and a gap is maintained between the clamping plate 63 and the piston 62. The second end of each of the clamping feet 5 extends into the gap. The air pipe 64 communicates with the air chamber 65. This configuration simplifies the structural composition of the drive assembly 6 and facilitates assembly and operation.

[0028] In this embodiment, the cylinder 61 is hollow, embedded in the central disc 2, and coaxially arranged with the central disc 2. It can be interference-fitted or threadedly connected to the central disc 2. The end of the cylinder 61 facing outwards is closed, and the end facing inwards towards the braking system is open. The piston 62 is inserted into the cylinder 61, with its outer wall circumferentially sealing against the inner wall of the cylinder 61, and can reciprocate linearly relative to the cylinder 61 axially. The piston 62 is inserted into one end of the cylinder 61, forming the air chamber 65 with the closed end of the cylinder 61. The clamping plate 63 is a flat plate, which is connected to the second end face of the piston 62, i.e. Figure 3 The piston 62 is fixedly connected to the left end face of the cylinder 61, which can be a bolt connection or other detachable connection method. A certain width gap exists between the clamp 63 and the piston 62, and the second end of the clamping foot 5 extends into this gap. One end of the air pipe 64 penetrates the side wall of the cylinder 61 and extends into the interior of the side wall. A channel is provided in the side wall of the cylinder 61, which connects to… Figure 3The right end of the piston 62 and the air chamber 65 enclosed by the inner wall of the closed end on the right side of the cylinder 61 are connected. The end of the air pipe 64 exposed in the cylinder 61 is connected to a compressed air source, which can be from the vehicle's air supply and led to the wheel end through a pipe as a power source. When the blade 4 needs to be rotated in the forward direction, compressed gas is input into the air chamber 65 through the air pipe 64. The compressed gas has a certain pressure. After being input into the air chamber 65, it pushes the end of the piston 62 inserted into the cylinder 61 to move towards the open end of the cylinder 61. During the movement of the piston 62, the locking foot 5 inserted in the gap between the piston 62 and the clamp 63 moves synchronously, thereby causing the blade 4 connected to the locking foot 5 to rotate relative to the wheel spoke 3, thereby releasing part of the ventilation window between the adjacent wheel spokes 3 where the blade 4 is located, allowing airflow to enter the braking system side. Ventilation and heat dissipation are performed; when the blade 4 needs to be rotated in the opposite direction, the compressed gas in the air chamber 65 is extracted through the air pipe 64, the pressure in the air chamber 65 gradually decreases and becomes less than the external air pressure, and the end of the piston 62 inserted into the cylinder 61 moves in the direction away from the opening end of the cylinder 61. During the movement of the piston 62, the locking foot 5 inserted in the gap between the piston 62 and the clamping plate 63 moves synchronously, thereby causing the blade 4 connected to the locking foot 5 to rotate in the opposite direction relative to the spoke 3 until the ventilation window between the adjacent spokes 3 where the blade 4 is located is completely blocked again. The appropriate gap between the piston 62 and the clamping plate 63 allows the locking feet 5, when inserted into the gap, to move linearly with the piston 62 during the reciprocating movement of the piston 62 as compressed gas is injected into or extracted from the gas chamber 65. This movement is also sufficient to allow for a certain degree of angular deflection, thereby causing the blade 4 connected to it to rotate relative to the spoke 3 at a certain angle. Depending on the application, the dimensions of the cylinder 61 and piston 62 can be adjusted, as can the shape and dimensions of the clamping plate 63, as long as it can cooperate with the piston 62 and simultaneously clamp all the locking feet 5. The specific arrangement of the air pipe 64 can also be adjusted, as long as it can communicate with the gas chamber 65 and normally input or extract compressed gas from it.

[0029] Optionally, a limiting block 7 is fixed to the inner wall of the first end of the cylinder 61; a limiting ring 8 is fixed to the circumferential outer wall of the piston 62, and the outer circumferential wall of the limiting ring 8 abuts against the inner circumferential wall of the cylinder. This arrangement, through the cooperation of the limiting block 7 and the limiting ring 8, restricts the range of movement of the piston 62 toward the opening end of the cylinder 61, preventing the piston 62 from moving excessively and dislodging from the cylinder 61.

[0030] like Figure 3 As shown, in this embodiment, a limiting block 7 is fixed on the inner wall of the open end of the cylinder 61, and a limiting ring 8 is fixed on the outer wall of the piston 62 facing the closed end of the cylinder 61. The limiting block 7 is positioned on the path along which the limiting ring 8 moves towards the open end of the cylinder 61. After the outer circumferential wall of the limiting ring 8 abuts against the inner circumferential wall of the cylinder 61, the limiting ring 8, the piston 62, and the inner wall of the closed end of the cylinder 61 enclose the air cavity 65. To ensure the airtightness between the limiting ring 8 and the cylinder 61, a sealing ring can also be fitted around the circumference of the limiting ring 8. Compressed gas is input into the air chamber 65 through the air pipe 64, pushing the piston 62 towards the open end of the cylinder 61. During this process, the outer wall of the limiting ring 8 is tightly fitted against the inner wall of the cylinder 61 to ensure that the compressed gas does not leak. When the piston 62 moves to the point where the limiting ring 8 abuts against the limiting block 7, it can no longer move. Depending on the actual application, the limiting block 7 can be set as multiple independent blocks, each fixedly connected to the inner wall of the cylinder 61 at intervals, or it can be set as an annular block fixedly connected to the inner wall of the cylinder 61. The limiting block 7 can be fixed to other inner wall positions other than the inner wall of the open end of the cylinder 61, and the limiting ring 8 can also be fixed to other outer wall positions other than the outer wall of the piston 62 facing the closed end of the cylinder 61, as long as the limiting block 7 and the limiting ring 8 can cooperate to prevent the piston 62 from coming out of the cylinder 61.

[0031] Optionally, the hub assembly further includes a spring 9, the first end of which is fixedly connected to the limiting block 7, and the second end of which is fixedly connected to the limiting ring 8. With this configuration, during the process of extracting compressed gas from the air chamber 65 via the air pipe 64, the spring force of the spring 9 allows the piston 62 to move more quickly toward the closed end of the cylinder 61.

[0032] like Figure 3As shown, in this embodiment, the left end of the spring 9 is fixedly connected to the limiting block 7 on the inner wall of the cylinder 61, and the right end is fixedly connected to the limiting ring 8 on the outer wall of the piston 62. The spring 9 is horizontally arranged and parallel to the axis of the piston 62. When compressed gas is injected into the air chamber 65 through the air pipe 64, the piston 62 and the limiting ring 8 move to the left under the push of the compressed gas. At the same time, the limiting ring 8 compresses the spring 9, and the spring 9 deforms to generate elastic potential energy. When the compressed gas in the air chamber 65 is extracted through the air pipe 64, the pressure in the air chamber 65 gradually decreases as the compressed gas is continuously extracted. The pressure applied to the piston 62 and the limiting ring 8 gradually decreases, and the pressure applied to the spring 9 also gradually decreases. The spring 9 recovers its deformation and applies elastic force to the limiting ring 8, causing the limiting ring 8 and the piston 62 to move towards the closed end of the cylinder 61. A reciprocating motion locking mechanism (similar to the press-and-retract lock mechanism in a ballpoint pen) can be added to lock the piston 62 in this position even after the air passage is closed, so that the blade 4 is normally open; after air passage is restored, the lock can be released, so that the blade 4 is closed.

[0033] Optionally, the hub assembly further includes a guide sleeve 10 and a guide post. The guide sleeve 10 is fixedly connected to the limiting block 7; the guide post is fixedly connected to the limiting ring 8, the guide post is inserted into the guide sleeve 10, and can reciprocate along the guide sleeve 10, and the spring 9 is sleeved on the guide sleeve 10 and the guide post. With the cooperation of the guide sleeve 10, the guide post, and the spring 9, the movement of the spring 9 can be constrained, ensuring that the spring 9 is compressed or stretched along its axial direction without excessive offset in other directions.

[0034] like Figure 3 As shown, in this embodiment, the guide sleeve 10 is fixed to the limiting block 7, the guide post is fixed to the limiting ring 8, and the guide sleeve 10 and the guide post are coaxially arranged, with the guide post always inserted into the guide sleeve 10. The piston 62 and the limiting ring 8 are pushed towards the opening end of the cylinder 61 by the compressed gas, that is... Figure 3 When the piston moves to the left, the limiting ring 8 compresses the spring 9, applying a leftward pressure to the spring 9, causing the spring 9 to deform. Simultaneously, the range of the guide post inserted into the guide sleeve 10 gradually increases. When the compressed gas in the air chamber 65 is extracted through the air pipe 64, the limiting ring 8 and the piston 62 move towards the closed end of the cylinder 61, that is... Figure 3When the piston moves to the right, the spring 9 restores its deformation and pushes the limiting ring 8 to move. At the same time, the range in which the guide post is inserted into the guide sleeve 10 gradually decreases. Throughout the entire process of the piston 62 reciprocating, the spring 9 is always sleeved outside the guide sleeve 10 and the guide post, so that the spring 9 can only be compressed or stretched along its axial direction.

[0035] Optionally, a limiting plate 11 is fixed to the outer wall of the second end of the piston 62, and the outer diameter of the limiting plate 11 is larger than the inner diameter of the cylinder 61. This arrangement prevents the piston 62 from moving excessively towards the closed end of the cylinder 61, causing the entire piston 62 to completely enter the cylinder 61 and affecting the operation of the retaining foot 5 and the blade 4.

[0036] like Figure 3 As shown, in this embodiment, an annular limiting plate 11 is circumferentially fixed to the outer wall of the second end of the piston 62, that is, the end of the piston 62 protruding from the left end of the cylinder 61. When the piston 62 moves toward the closed end of the cylinder 61, that is, toward... Figure 3 When the piston 62 moves to the right, it cannot move further when the limiting plate 11 abuts against the open end of the cylinder 61. Depending on the actual application, the limiting plate 11 can be an annular ring around the piston 62, or it can be set as several independent blocks, fixed at intervals to the outer circumferential wall of the piston 62. As long as the limiting plate 11 can abut against the cylinder 61 when the piston 62 moves to the open end of the cylinder 61, preventing the piston 62 from moving further into the cylinder 61, it is acceptable.

[0037] Optionally, each blade 4 is fixed with a rotating shaft (not shown); each spoke 3 is fixed with a boss 12, the boss 12 having an insertion hole, and the opposite ends of the rotating shaft are respectively inserted into the insertion holes of two adjacent bosses 12, and can rotate within the insertion holes. This arrangement simplifies the rotatable connection between the blade 4 and the spoke 3, facilitating assembly and operation.

[0038] like Figure 1 and Figure 2 As shown, in this embodiment, each spoke 3 has a boss 12 fixed on both opposite sides, and each boss 12 has an insertion hole. The blade 4 is located between two adjacent spokes 3. The two ends of the rotating shaft fixedly connected to the blade 4 are respectively inserted into the insertion holes of the boss 12 on both sides, so as to realize the rotatable connection between the blade 4 and the spoke 3.

[0039] Optionally, each of the locking feet 5 includes a first fixed section 51 and a second fixed section 52 connected together. The first fixed section 51 and the second fixed section 52 are arranged at an angle. The free end of the first fixed section 51 is connected to the blade 4, and the free end of the second fixed section 52 is inserted into the gap. With this arrangement, by means of the angle between the first fixed section 51 and the second fixed section 52, during the reciprocating movement of the locking foot 5 by the piston 62, a small movement of the second fixed section 52 can drive the blade 4 to rotate a large amplitude through the first fixed section 51.

[0040] like Figure 2 As shown, in this embodiment, the first fixing segment 51 and the second fixing segment 52 are set at an angle of approximately 90°. Depending on the actual application, the angle between the first fixing segment 51 and the second fixing segment 52 can also be adjusted appropriately.

[0041] Optionally, the wheel hub assembly also includes an air tank (not shown), the air outlet of which is connected to the air pipe 64; a valve (not shown) and an air pump (not shown) are installed on the air pipe 64. This arrangement ensures that compressed gas can be input or extracted through the air pipe 64 at any time.

[0042] When compressed gas needs to be injected into the air chamber 65, the valve is opened and the air pump is started, allowing the compressed gas from the air tank to be input into the air chamber 65 via the air pipe 64. When compressed gas needs to be extracted from the air chamber 65, the valve is opened and the air pump is started in reverse, extracting the compressed gas from the air chamber 65 into the air tank. When the vehicle stops and there is no need to adjust the angle of the blade 4 relative to the wheel spoke 3, the valve is closed and the air pump is turned off.

[0043] The present invention also provides a vehicle comprising the wheel assembly described in any of the above embodiments.

[0044] The vehicle using this invention drives the blades 4 to rotate relative to the spokes 3 via the drive assembly 6. When ventilation and heat dissipation of the braking system are not required, the blades 4 completely block the ventilation windows between the two adjacent spokes 3. When ventilation and heat dissipation of the braking system are required, the blades 4 do not completely block the ventilation windows, but partially release the ventilation windows to allow airflow. This achieves the switching between two functional scenarios: reducing the overall vehicle drag and enhancing brake cooling and ventilation. It maximizes the drag reduction effect of the blades 4 while ensuring normal ventilation and heat dissipation of the braking system when needed.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wheel hub assembly, comprising a rim and a center disc coaxially arranged, and a plurality of spokes connecting the center disc and the rim circumferentially, wherein a ventilation window is provided between each pair of adjacent spokes, characterized in that, Also includes: Multiple blades, one of which is provided in each ventilation window, the blades covering the ventilation window, and the blades being rotatably connected to two adjacent spokes; Multiple locking pins, with the first end of one of the locking pins connected to one of the blades; A driving component is embedded in the central disk and is driven to the second end of each of the latches, driving the latches to move closer to or away from the central disk.

2. The wheel hub assembly according to claim 1, characterized in that, The driving component includes: A cylinder barrel, which is embedded in the central disk, has a receiving cavity inside, and has an opening at its first end; A piston, the first end of which is disposed in the receiving cavity, the second end of which extends out of the opening, the outer wall of which circumferentially abuts against the inner wall of which is circumferentially, and the piston can reciprocate relative to the cylinder, the piston and the cylinder enclosing an exhaust chamber; A clamping plate is fixedly connected to the second end face of the piston, and a gap is maintained between the clamping plate and the piston. The second end of each of the clamping feet extends into the gap. The trachea is connected to the air cavity.

3. The wheel hub assembly according to claim 2, characterized in that: A limit block is fixed on the inner wall of the first end of the cylinder. A limiting ring is fixed on the circumferential outer wall of the piston, and the outer circumferential wall of the limiting ring abuts against the inner circumferential wall of the cylinder.

4. The wheel hub assembly according to claim 3, characterized in that, Also includes: A spring, the first end of which is fixedly connected to the limiting block, and the second end of which is fixedly connected to the limiting ring.

5. The wheel hub assembly according to claim 4, characterized in that, Also includes: A guide sleeve, which is fixedly connected to the limiting block; A guide post is fixedly connected to the limiting ring. The guide post is inserted into the guide sleeve and can reciprocate along the guide sleeve. The spring is sleeved on the guide sleeve and the guide post.

6. The wheel hub assembly according to any one of claims 2-5, characterized in that: A limiting plate is fixed to the outer wall of the second end of the piston, and the outer diameter of the limiting plate is larger than the inner diameter of the cylinder.

7. The wheel hub assembly according to any one of claims 1-5, characterized in that: Each of the blades is fixed with a rotating shaft; Each of the spokes is fixed with a boss, and the boss has a hole. The two opposite ends of the rotating shaft are respectively inserted into the holes of two adjacent bosses and can rotate within the holes.

8. The wheel hub assembly according to any one of claims 2-5, characterized in that: Each of the aforementioned clamping feet includes a first fixed section and a second fixed section connected together, the first fixed section and the second fixed section being arranged at an angle, the free end of the first fixed section being connected to the blade, and the free end of the second fixed section being inserted into the gap.

9. The wheel hub assembly according to any one of claims 1-5, characterized in that, Also includes: A gas storage tank, wherein the gas outlet of the gas storage tank is connected to the gas pipe; The air pipe is equipped with valves and an air pump.

10. A vehicle, characterized in that, Includes the wheel hub assembly as described in any one of claims 1-9.

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