Opening and closing type rim blade assembly and working method thereof

Abstract

The invention relates to the technical field of automobiles, in particular to an opening and closing type rim blade assembly and a working method thereof. The blade assembly comprises a swinging blade and a driving mechanism; the swing blades are located at the ventilation windows and rotationally connected with the spokes, and the inner ends of the swing blades penetrate through the hub; the driving mechanism comprises a driving sleeve and a push disc, the driving sleeve is rotationally installed in the center of the hub, the push disc is installed on the driving sleeve in a threaded mode, when the driving sleeve rotates, the inner ends of the swing blades can be driven by the push disc to move in the axial direction of the wheel, and then the swing blades are driven to swing to close or open the ventilation windows. According to the structure, the dynamic balance performance is improved, the adaptability to severe environments is improved, and the structural complexity and the manufacturing cost are reduced.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to an openable / closed rim blade assembly and its working method. Background Technology

[0002] During vehicle operation, the aerodynamic characteristics of the wheel area have a significant impact on the overall vehicle drag. Simultaneously, the wheels also need to provide cooling channels for the brakes, requiring airflow to be drawn in when the brake temperature rises. Therefore, the blades must strike a balance between reducing drag and ensuring heat dissipation. Current technology typically involves mounting openable and closable blades on the wheel rim, driven by a motor or centrifugal mechanism to switch between reducing drag and cooling the brakes.

[0003] The common structure currently involves distributing multiple actuators or centrifugal mechanisms in locations far from the rim's rotation center. This distributed arrangement results in a more dispersed mass distribution in the blade assembly, making dynamic balancing difficult. Furthermore, the exposed actuators are difficult to waterproof and dustproof, and the structure is also quite complex. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an openable rim blade assembly with a more compact structure and a motion mechanism concentrated in the central area of ​​the rim, so as to improve dynamic balance performance, enhance adaptability to harsh environments, and reduce structural complexity and manufacturing costs.

[0005] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0006] An openable / closeable rim blade assembly includes a swing blade and a drive mechanism. The swing blade is located at the ventilation window and is rotatably connected to the wheel spokes. The inner end of the swing blade passes through the wheel hub. The drive mechanism includes a drive sleeve and a push plate. The drive sleeve is rotatably mounted at the center of the wheel hub, and the push plate is threaded onto the drive sleeve. When the drive sleeve rotates, it can drive the inner end of the swing blade to move along the wheel axis through the push plate, thereby causing the swing blade to swing and close or open the ventilation window.

[0007] Optionally, the drive mechanism further includes a bearing outer flange, which is fixedly mounted on the hub, and the drive sleeve is rotatably mounted in the bearing outer flange. A pulsator cap is also installed at the outer end of the drive sleeve.

[0008] Optionally, the outer wall of the drive sleeve is provided with an external thread, the inner ring of the push plate is provided with an internal thread, and the internal thread of the push plate is installed on the external thread of the drive sleeve; the outer wall of the push plate is provided with a limiting claw, and the center hole of the wheel hub is provided with a limiting groove, and the limiting claw is inserted into the limiting groove.

[0009] Optionally, the hub has a hole arranged radially along the wheel, and the inner end of the oscillating blade is inserted into the hole and extends into the center hole of the hub.

[0010] Optionally, a support rod is provided on the side of the spokes facing the ventilation window, and a rotating lug is provided on the inner side of the swing blade, with the support rod inserted into the lug hole of the rotating lug.

[0011] Optionally, a torsion spring is sleeved and fixed on the support rod, and the support foot of the torsion spring abuts against the inner side of the swing blade, so that the swing blade tends to close the ventilation window; the push plate is located on one side of the inner end of the swing blade, and opens the ventilation window when the push plate pushes the swing blade.

[0012] Optionally, a drive groove is provided on the outer wall of the push plate. The drive groove is an annular groove, and the inner end of the swing blade is embedded in the drive groove.

[0013] Optionally, the drive sleeve is provided with external threads, and no push plate is installed; the inner end of the swing blade is directly embedded in the external threads of the drive sleeve.

[0014] Optionally, the drive mechanism further includes a motor base, a drive motor, a drive gear, and a driven gear. The motor base is installed in the center hole of the hub, the drive motor is installed on the motor base, the drive gear is installed on the drive motor, the inner ring of the drive sleeve has a gear ring, and the driven gear meshes with both the drive gear and the gear ring of the drive sleeve.

[0015] This invention also provides a method for operating an openable / closeable rim blade assembly, comprising the following steps: Drive sleeve to rotate; The push plate moves along the wheel axis under the drive of the drive sleeve; The pusher plate pushes the inner end of the oscillating blade to move along the wheel axis; The oscillating blades oscillate around the rotating connection between the blades and the spokes under the push of the pusher plate, so that the outer ends of the oscillating blades move away from the spokes and open the ventilation window; The drive sleeve rotates in the opposite direction; The pusher moves in the opposite direction along the wheel axis under the threaded drive of the drive sleeve; The pusher releases the thrust on the inner end of the oscillating blade; The oscillating blades oscillate in the opposite direction around the point of rotational connection with the spokes, causing the outer end of the oscillating blades to approach the spokes and close the ventilation window.

[0016] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: In this invention, the oscillating blade is located at the ventilation window and rotatably connected to the wheel spokes. The inner end of the oscillating blade passes through the wheel hub. When the drive sleeve rotates, it drives the push plate to move axially along the wheel via a thread. The push plate pushes the inner end of the oscillating blade to move axially as well, thereby causing the oscillating blade to oscillate around its rotatable connection with the wheel spokes, thus opening or closing the ventilation window. Concentrating the drive mechanism at the center of the wheel hub concentrates the mass of the moving parts of the entire blade assembly in the central area, avoiding the eccentric mass caused by the drive motor being distributed around the rim edge in existing technologies. This significantly improves the dynamic balance performance of the wheel and reduces the difficulty of counterweight adjustment. Simultaneously, since the drive mechanism is located within the center hole of the wheel hub, this position is protected by the wheel hub and is less susceptible to direct erosion from mud, water, and dust during operation, improving waterproof and dustproof performance and reducing the risk of jamming or failure due to environmental corrosion. Furthermore, this solution uses a simple threaded transmission structure to convert the rotational motion of the drive sleeve into the linear motion of the push plate, which then drives the blade to oscillate. The entire transmission chain is short, with few parts, a simple and reliable structure, and low manufacturing cost. Therefore, it effectively solves the problems mentioned in the background technology, such as complex structure, difficulty in controlling dynamic balance, and poor environmental adaptability.

[0017] Advantages of additional aspects of the invention will be set forth 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

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In addition, the dimensions or spacing between the components are exaggerated to show the position of each component, and the schematic diagrams are for illustrative purposes only.

[0019] Figure 1 This is a schematic diagram of the inner side of the wheel provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the outer side of a wheel provided in an embodiment of the present invention (a swing blade is hidden). Figure 3 This is a schematic diagram of a wheel provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the driving structure provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the driving structure of another embodiment provided by the present invention; In the diagram: 1. Wheel; 11. Rim; 12. Ventilation window; 13. Spoke; 14. Support rod; 15. Hub; 16. Hole; 2. Oscillating blade; 21. Rotating lug; 3. Drive mechanism; 31. Drive sleeve; 32. Bearing outer flange; 33. Impeller cap; 34. Drive gear; 35. Driven gear; 36. Push plate; 37. Motor base; 38. Drive motor; 39. Torsion spring; Detailed Implementation It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] Example 1 Terminology Explanation: Rim: The outer edge of a wheel used to mount the tire; it is usually integrated with the spokes or designed separately.

[0021] Spoke: A structural component that connects the rim and hub, serving to provide support and transmit force.

[0022] Wheel hub: The central part of the wheel, used to install bearings and connect to the axle.

[0023] Ventilation windows: The gaps between the wheel spokes allow airflow to pass through, helping to dissipate heat from the braking system.

[0024] Oscillating blades: Movable blades installed at ventilation windows, which open and close the windows by oscillating.

[0025] Drive sleeve: A ring-shaped transmission component installed at the center of the wheel hub, which can drive the push plate to move by rotation.

[0026] Push plate: A disc-shaped component that engages with the drive sleeve thread and moves axially to push the blades.

[0027] Impeller cap: A manually operated component, installed on the outer end of the drive sleeve for easy manual rotation.

[0028] Torsion spring: A type of spring used to provide a restoring force so that the blades close automatically.

[0029] Limiting claws and limiting grooves: used to limit the rotation of the push plate and ensure that it can only move axially.

[0030] As described in the background section, existing technologies distribute multiple actuators or centrifugal mechanisms at different positions around the rim circumference, and these components are located in areas far from the rim center. This results in a relatively dispersed mass distribution of the entire blade assembly, significantly impacting the wheel's dynamic balance and requiring additional balancing weights, thus increasing the difficulty of balance adjustment. Secondly, the actuators and transmission mechanisms are susceptible to corrosion from mud, water, and dust during operation, making it difficult to guarantee waterproof and dustproof performance, and they are prone to jamming or failure after long-term use. Furthermore, the method of configuring an independent drive source for each blade results in a large number of parts, high structural complexity, low convenience of assembly and maintenance, and also leads to increased costs.

[0031] The main motion mechanism, drive control mechanism, and transmission components of the openable rim blade assembly are all centrally located at the center of rotation of the rim, i.e., the hub center area, fundamentally solving the dynamic balance control problem caused by the decentralized layout; the space of the hub center hole forms a natural protective structure, improving the waterproof and dustproof performance of the blade assembly and enhancing environmental adaptability; a simple threaded drive + hinged oscillation structure is adopted to reduce the number of transmission links and parts, simplify the overall structure, and improve operational reliability; at the same time, both manual and automatic drive modes are designed to improve the product's flexibility and adaptability.

[0032] like Figure 1 , Figure 2 , Figure 3 As shown, an openable / closable rim 11 blade assembly includes a swing blade 2 and a drive mechanism 3; the swing blade 2 is located at the ventilation window 12 and is rotatably connected to the spoke 13, and the inner end of the swing blade 2 passes through the hub 15; as shown Figure 4 As shown, the drive mechanism 3 includes a drive sleeve 31 and a push plate 36. The drive sleeve 31 is rotatably mounted at the center of the wheel hub 15, and the push plate 36 is threaded onto the drive sleeve 31. When the drive sleeve 31 rotates, it can drive the inner end of the swing blade 2 to move along the axial direction of the wheel 1 through the push plate 36, thereby driving the swing blade 2 to swing and close or open the ventilation window 12.

[0033] The structure design of the oscillating blade 2 being arranged in relation to the ventilation window 12 between the spokes 13 and being rotatably connected to the spokes 13 allows the oscillating blade 2 to open and close the ventilation window 12 by its own oscillating motion, thus completing the function of reducing wind resistance and heat dissipation ventilation without the need for additional shielding structures at the spokes 13.

[0034] The drive sleeve 31 of the drive mechanism 3 is rotatably mounted at the center of the hub 15, and the push plate 36 is threaded onto the drive sleeve 31. This arrangement concentrates the core components of the drive mechanism 3 at the center of the hub 15. This arrangement keeps the main motion and drive control mechanism of the blade assembly away from the ventilation window 12 area of ​​the spoke 13, solving the dynamic balance control problem caused by arranging the motion execution mechanism away from the rotation center of the rim 11 in the prior art. The arrangement at the center of the hub 15 makes the weight distribution of the blade assembly closer to the rotation center of the wheel 1, effectively suppressing the imbalance problem that occurs in the eccentric rotation of the blade assembly.

[0035] The drive sleeve 31 rotates and drives the inner end of the swing blade 2 to move along the axis of the wheel 1 through the push plate 36, thereby realizing the swing of the swing blade 2. This eliminates the design of multiple sets of actuators or rotating centrifugal mechanisms that are scattered in the existing technology, reduces the number of motion execution and control mechanisms, solves the problem of mechanism redundancy in the existing technology, makes the overall structure of the blade assembly simpler, and reduces the implementation difficulty of the blade assembly.

[0036] The threaded transmission structure of the drive sleeve 31 and the push plate 36 ensures stable transmission and controllable clearance, improving the accuracy of blade opening and closing actions while reducing the number of vulnerable parts, making the blade assembly more stable under complex driving conditions.

[0037] The drive mechanism 3 is centrally located in the center of the hub 15, which places the core transmission components inside the central hole of the hub 15. Compared with the design in the prior art where the components are exposed outside the ventilation window 12, the space in the central hole of the hub 15 forms a natural protective structure, reducing the contact between mud, water and dust and the core components, improving the dustproof and waterproof performance of the blade assembly, and thus improving the overall durability.

[0038] The structural design of the inner end of the oscillating blade 2 passing through the hub 15 and cooperating with the push plate 36 allows the power transmission end of the oscillating blade 2 to be located inside the hub 15, with only the main body of the blade arranged at the ventilation window 12. This achieves spatial separation between power transmission and blade movement, allowing the oscillating motion of the blade to be completed solely by the axial force of its own rotation connection point and inner end. There is no need to set up additional power components at the blade, further simplifying the structural design of the blade and reducing the overall weight of the blade assembly.

[0039] The drive mechanism 3 also includes a bearing outer flange 32, which is fixedly installed on the hub 15. The drive sleeve 31 is rotatably installed in the bearing outer flange 32, and a pulsator cap 33 is also installed on the outer end of the drive sleeve 31.

[0040] The drive sleeve 31 is rotatably mounted via the bearing outer flange 32, providing stable rotational support and ensuring smooth and precise rotation. The impeller cap 33 is installed on the outer end of the drive sleeve 31, allowing operators to manually rotate it and enabling manual control. This eliminates the need for electrical or electronic control units, increasing flexibility in application scenarios. Simultaneously, sealing the outer end of the drive sleeve 31 reduces contact between mud, water, and dust with core components, improving dust and water resistance.

[0041] The bearing outer flange 32 can be fixed in the center hole of the rim 11 by interference fit or screw connection. The drive sleeve 31 is rotatably installed in the bearing outer flange 32. For example, the outer wall of the drive sleeve 31 has an annular groove, and the inner ring of the bearing outer flange 32 is embedded in the annular groove of the drive sleeve 31.

[0042] The outer wall of the drive sleeve 31 is provided with an external thread, and the inner ring of the push plate 36 is provided with an internal thread. The internal thread of the push plate 36 is installed on the external thread of the drive sleeve 31. The outer wall of the push plate 36 is provided with a limiting claw (not shown in the figure), and the center hole of the hub 15 is provided with a limiting groove. The limiting claw is inserted into the limiting groove.

[0043] The limiting claw is inserted into the limiting groove. This limiting structure ensures that the push plate 36 can only move axially and cannot rotate with the drive sleeve 31. This ensures that the push plate 36 can reliably move axially when the drive sleeve 31 rotates, accurately converting the rotational motion into linear motion and improving the stability and reliability of the transmission.

[0044] The hub 15 has a hole 16 arranged radially along the wheel 1. The inner end of the oscillating blade 2 is inserted into the hole 16 and extends into the center hole of the hub 15. This provides a movement channel for the inner end of the oscillating blade 2. At the same time, the hole 16 has a set gap along the axial direction, allowing the inner end of the blade to have a certain oscillation space when it moves axially under the push of the pusher 36.

[0045] A support rod 14 is provided on the side of the spoke 13 facing the ventilation window 12, and a rotating lug 21 is provided on the inner side of the oscillating blade 2. The support rod 14 is inserted into the lug hole of the rotating lug 21. This hinge structure is simple and easy to assemble. The support rod 14 is fixed on the spoke 13, providing a stable axis of rotation for the blade. The movement trajectory of the blade when it oscillates around the support rod 14 is determined, which is beneficial for precise control of the opening of the ventilation window 12.

[0046] A torsion spring 39 is sleeved and fixed on the support rod 14. The support foot of the torsion spring 39 abuts against the inner side of the swing blade 2, so that the swing blade 2 tends to close the ventilation window 12. The push plate 36 is located on one side of the inner end of the swing blade 2, and opens the ventilation window 12 when the push plate 36 pushes the swing blade 2.

[0047] By manually rotating the impeller cap 33 in the drive mechanism 3, the drive sleeve 31 is driven to rotate, and the screw-driven blade pusher 36 moves along the axis, thereby pushing one end of the swing blade 2 into the central hole to move. The swing blade 2 then swings around the support rod 14, and the outer end of the blade moves away from the rim 11, thus opening the blade and allowing air to enter for brake cooling. Reverse rotation of the impeller cap 33, under the action of the torsion spring 39, resets the pusher 36 of the swing blade 2, and the outer end of the blade swings closer to the rim 11, achieving the blade closing operation, reducing air intake and lowering wind resistance. The synergistic effect of the torsion spring 39 and the pusher 36 allows the blade to open when the pusher 36 moves forward and close when it moves backward. The opening and closing action is reliable, and the reset force ensures that the blade fits tightly in the closed state, reducing air leakage. As an alternative, the swing blade 2 can also reset under the action of its own material deformation force.

[0048] In another embodiment (not shown in the figure), a drive groove is provided circumferentially on the outer wall of the push plate 36. The drive groove is an annular groove, and the inner end of the swing blade 2 is embedded in the drive groove. The two side walls of the drive groove can abut against the inner end of the swing blade 2. When the push plate 36 moves to one side along the axis of the wheel 1, one side wall of the drive groove pushes the inner end of the swing blade 2, causing the blade to swing and open the ventilation window 12. When the push plate 36 moves to the other side along the axis of the wheel 1, the other side wall of the drive groove pulls the inner end of the swing blade 2, causing the blade to swing and close the ventilation window 12. This structure can close the ventilation window 12 without the torsion spring 39, reducing the number of parts. At the same time, the opening and closing action of the blade is driven by the push plate 36, making the action more controllable and enabling stepless adjustment of the blade opening and closing angle.

[0049] In another implementation, such as Figure 5 As shown, the drive sleeve 31 is provided with external threads, eliminating the need for the push plate 36. The inner end of the swing blade 2 is directly embedded in the threaded groove of the drive sleeve 31. When the drive sleeve 31 rotates, the sidewall of the threaded groove of its external thread directly contacts the inner end of the swing blade 2, and the helical motion of the thread pushes the inner end of the blade to move axially, thereby causing the swing blade 2 to swing and open / close the ventilation window 12. This structure eliminates the core component, the push plate 36, further reducing the number of parts, manufacturing costs, and assembly difficulty. However, it places higher demands on the shape accuracy of the inner end of the swing blade 2 and the fitting accuracy with the external thread of the drive sleeve 31. It is suitable for vehicle models with high cost control requirements and relatively low opening / closing accuracy requirements.

[0050] like Figure 4As shown, the drive mechanism 3 also includes a motor base 37, a drive motor 38, a drive gear 34, and a driven gear 35. The motor base 37 is a rigid metal bracket structure, which is fixedly installed in the center hole of the wheel hub 15 by bolts. The motor base 37 is coaxially arranged with the central axis of the wheel 1, providing a stable mounting base for the drive motor 38 and the driven gear 35. The drive motor 38 is a low-speed, high-torque motor, which is fixedly installed on the motor base 37 by bolts. The output shaft of the drive motor 38 is arranged along the central axis of the wheel 1. The drive gear 34 is installed on the output shaft of the drive motor 38 by a key or interference fit, and rotates synchronously with the output shaft. The inner ring of the drive sleeve 31 is machined with a continuous gear ring in the circumferential direction. The driven gear 35 is rotatably installed on the motor base 37 through a rotating shaft, and the driven gear 35 meshes with both the drive gear 34 and the gear ring of the drive sleeve 31, forming a two-stage gear reduction transmission mechanism.

[0051] In automatic control mode, after the drive motor 38 is powered on, its output shaft drives the drive gear 34 to rotate. The drive gear 34 transmits power to the driven gear 35, which in turn transmits power to the gear ring of the drive sleeve 31. Through gear transmission, speed reduction and torque increase are achieved, causing the drive sleeve 31 to rotate around the central axis of the wheel 1. This, in turn, drives the push plate 36 to move axially through threaded transmission, realizing the automatic opening and closing of the blades. This gear transmission method has a compact structure and an adjustable reduction ratio, which can provide sufficient driving force to the drive sleeve 31 according to actual needs, ensuring the smoothness of the blade opening and closing action. Furthermore, the drive motor 38, drive gear 34, and driven gear 35 are all arranged in the central hole of the hub 15, which also has the advantage of centralized arrangement, does not increase the eccentric mass of the wheel 1, and does not affect the dynamic balance performance. Meanwhile, the drive motor 38 can be electrically connected to the vehicle's overall control system to receive signals from the vehicle speed sensor and the brake temperature sensor, thereby enabling automatic switching of the blade opening and closing state and opening angle. For example, when the vehicle is traveling at high speed, the brake temperature is low, and the blades automatically close to reduce wind resistance; when the vehicle brakes frequently or the brake temperature exceeds a set threshold, the blades automatically open to dissipate heat, thus improving the vehicle's intelligence level and driving safety.

[0052] In summary, this invention fundamentally solves the problems of redundant motion execution and control mechanisms and imbalance of the blade assembly during eccentric rotation in existing technologies by centrally arranging the drive mechanism 3 at the center of the hub 15. Simultaneously, the natural protection of the center hole of the hub 15 enhances environmental adaptability. The simple structure of threaded transmission + hinged oscillation reduces the number of parts, improves operational reliability, and lowers manufacturing costs and assembly difficulty. The drive system can be either manual or automatic, allowing for flexible selection based on vehicle model requirements, usage scenarios, and user needs, offering strong adaptability. The drive sleeve 31 can be driven to rotate by manually rotating the impeller cap 33 installed at the center of the rim 11, or by using the drive motor 38 integrated in the blade assembly. This causes the pusher plate 36 mounted on the drive sleeve 31 to move axially, thereby pushing the blades to open and close, achieving a dynamic balance between wind resistance reduction and brake cooling.

[0053] Overall advantages: Significantly improved dynamic balance performance: This invention concentrates all the drive mechanism and transmission components of the oscillating blades in the central area of ​​the wheel hub, so that the mass of the moving parts of the entire blade assembly is concentrated on the rotation center line of the wheel. This completely avoids the eccentric mass problem caused by the drive motor and centrifugal mechanism being dispersed on the edge of the rim in the prior art, effectively reducing the dynamic imbalance when the wheel rotates, greatly improving the dynamic balance performance of the wheel, reducing the amount of dynamic balance weight used and the difficulty of weight adjustment, avoiding problems such as wheel vibration and abnormal tire wear caused by insufficient dynamic balance accuracy, and improving the ride smoothness of the vehicle and the service life of the components.

[0054] Significantly improved environmental adaptability: The drive mechanism and core transmission components are all located inside the center hole of the wheel hub. This position is protected by multiple layers of the wheel hub and spokes, making it less susceptible to direct erosion by mud, water, and dust during vehicle operation. It also effectively avoids impacts from stones and debris, greatly improving the waterproof and dustproof performance and impact resistance of the blade assembly. This reduces the risk of component jamming and transmission failure caused by environmental erosion and impacts from foreign objects, extending the service life of the blade assembly and enabling it to adapt to various harsh driving conditions such as rain, mud, and gravel roads.

[0055] The overall structure is simple and reliable: This invention adopts a simple threaded transmission structure, which directly converts the rotational motion of the drive sleeve into the linear motion of the push plate. The push plate then drives the blades to swing to achieve the opening and closing action. The entire transmission chain is short and there are few transmission links. It abandons the design of configuring a drive source and transmission mechanism for each blade independently in the existing technology, which greatly reduces the number of parts and reduces the structural complexity of the blade assembly. At the same time, the threaded transmission and hinged connection are mature and reliable, and the fit clearance is controllable, which improves the accuracy and stability of the blade opening and closing action, reduces the number of vulnerable parts, and makes the working state of the blade assembly more stable under complex driving conditions.

[0056] Reduced manufacturing costs and assembly difficulty: The reduction in the number of parts directly reduces the raw material costs and processing costs of the product. At the same time, the centralized structural design simplifies the assembly process of the blade assembly, makes the assembly positioning more precise, and greatly improves the production and assembly efficiency. In addition, the centralized drive mechanism also makes subsequent inspection and maintenance more convenient, reduces after-sales maintenance costs, and improves the economics of the product.

[0057] Precise and controllable opening and closing action: The push plate is driven to move axially through a threaded transmission. The movement distance of the push plate can be precisely controlled by the rotation angle of the drive sleeve, thereby achieving precise adjustment of the opening and closing angle of the swing blades. It can flexibly adjust the opening of the ventilation window according to the actual temperature of the brake, the vehicle speed and other operating conditions, to achieve a fine balance between wind resistance reduction and brake heat dissipation, and avoid the performance loss caused by the blades being fully open or closed. At the same time, the circumferential limiting structure of the limiting claw and the limiting groove ensures that the push plate only moves axially in a linear manner, avoiding transmission failure caused by circumferential rotation, and further improving the reliability of the opening and closing action.

[0058] Flexible and diverse driving methods: This invention supports both manual and automatic driving methods. Manual driving rotates the drive sleeve by rotating the impeller cap at the outer end of the hub, requiring no electricity or electronic control unit. It is simple to operate and can quickly adjust the blade state when the vehicle is stationary, making it suitable for emergency situations or simple adjustments. Automatic driving rotates the drive sleeve through a drive motor and gear transmission mechanism integrated in the center of the hub. It can be connected to the vehicle's overall control system and automatically switches the blade opening and closing state based on signals from the vehicle speed sensor and brake temperature sensor, improving the vehicle's intelligence level and ease of use. The two driving methods can be flexibly selected according to vehicle model requirements and usage scenarios.

[0059] Optimized blade structure design: The inner end of the oscillating blade extends through the hub to the central hole area, achieving spatial separation between the power transmission end and the blade's movement end. Only the main body of the blade is arranged at the ventilation window, eliminating the need for additional power components and transmission structures at the blade, thus simplifying the oscillating blade's structure and reducing its weight. Simultaneously, the oscillating blade and the spokes adopt a hinged structure of a support rod and a rotating lug. The hinge point is precisely positioned, and the oscillating trajectory of the blade is determined. This ensures a tight fit between the blade and the spokes and rim when the ventilation window is closed, reducing airflow leakage and improving wind resistance optimization. When open, the blade's oscillation angle is sufficient to ensure adequate ventilation area and improve braking heat dissipation efficiency.

[0060] Example 2 A method for operating an openable / closable rim 11-blade assembly includes the following steps: Drive sleeve 31 to rotate; The push plate 36 moves along the axis of the wheel 1 under the drive of the drive sleeve 31; The pusher 36 pushes the inner end of the swing blade 2 to move along the axis of the wheel 1; The oscillating blade 2 is pushed by the pusher plate 36 and oscillates around the rotational connection between it and the spoke 13, so that the outer end of the oscillating blade 2 moves away from the spoke 13 and opens the ventilation window 12. Drive sleeve 31 rotates in the opposite direction; The push plate 36 moves in the opposite direction along the wheel 1 axis under the threaded drive of the drive sleeve 31; The pusher plate 36 releases the thrust on the inner end of the oscillating blade 2; The oscillating blade 2 oscillates in the opposite direction around its rotational connection with the spoke 13, so that the outer end of the oscillating blade 2 is close to the spoke 13, thus closing the ventilation window 12.

[0061] The manual control mode of this operating method is simple to operate, requiring no reliance on the vehicle's electrical or electronic control systems. It allows for rapid adjustment of the blade state even when the vehicle is stationary, making it suitable for vehicle debugging, emergency repairs, or scenarios where electric control is not required. The automatic control mode is deeply integrated with the vehicle's overall control system, automatically and precisely adjusting the blade opening and closing status and angle based on real-time operating conditions such as vehicle speed and brake temperature, without manual intervention. This enhances the vehicle's intelligence and ease of use, while also achieving a real-time dynamic balance between reducing wind resistance and brake cooling, maximizing fuel economy and braking safety. Both control modes can be flexibly selected during the product design phase based on vehicle model positioning and user needs, or designed as a manual / automatic hybrid mode to further enhance the product's practicality.

[0062] While the specific embodiments of the present invention have been described above, they are not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. An openable / closable rim blade assembly for mounting on a wheel, the wheel having spokes and a hub, with ventilation windows between the spokes, characterized in that... The blade assembly includes oscillating blades and a drive mechanism; The oscillating blade is located at the ventilation window and is rotatably connected to the spokes, with the inner end of the oscillating blade passing through the hub; The drive mechanism includes a drive sleeve and a push plate. The drive sleeve is rotatably mounted at the center of the wheel hub, and the push plate is threaded onto the drive sleeve. When the drive sleeve rotates, it can drive the inner end of the swing blade to move along the wheel axis through the push plate, thereby causing the swing blade to swing and close or open the ventilation window.

2. The opening and closing rim blade assembly as described in claim 1, characterized in that, The drive mechanism also includes a bearing outer flange, which is fixedly mounted on the hub. The drive sleeve is rotatably mounted in the bearing outer flange, and a pulsator cap is also installed at the outer end of the drive sleeve.

3. The opening and closing rim blade assembly as described in claim 1, characterized in that, The outer wall of the drive sleeve is provided with an external thread, and the inner ring of the push plate is provided with an internal thread. The internal thread of the push plate is installed on the external thread of the drive sleeve. The outer wall of the push plate is provided with a limit pawl, and the center hole of the hub is provided with a limit groove. The limit pawl is inserted into the limit groove.

4. The opening and closing rim blade assembly as described in claim 1, characterized in that, The wheel hub has a hole arranged radially along the wheel, and the inner end of the swing blade is inserted into the hole and extends into the center hole of the wheel hub.

5. The opening and closing rim blade assembly as described in claim 1, characterized in that, A support rod is provided on the side of the spokes facing the ventilation window, and a rotating lug is provided on the inner side of the swing blade. The support rod is inserted into the lug hole of the rotating lug.

6. The opening and closing rim blade assembly as described in claim 5, characterized in that, A torsion spring is fixedly fitted onto the support rod, and the support foot of the torsion spring abuts against the inner side of the swing blade, so that the swing blade tends to close the ventilation window; the push plate is located on one side of the inner end of the swing blade, and opens the ventilation window when the push plate pushes the swing blade.

7. The opening and closing rim blade assembly as described in claim 1, characterized in that, The outer wall of the pusher plate is provided with a drive groove, which is an annular groove, and the inner end of the swing blade is embedded in the drive groove.

8. The opening and closing rim blade assembly as described in claim 1, characterized in that, The drive sleeve is provided with external threads, and no push plate is installed. The inner end of the swing blade is directly embedded in the external threads of the drive sleeve.

9. The opening and closing rim blade assembly as described in claim 1, characterized in that, The drive mechanism further includes a motor base, a drive motor, a drive gear, and a driven gear. The motor base is installed in the center hole of the hub, the drive motor is installed on the motor base, the drive gear is installed on the drive motor, the inner ring of the drive sleeve has a toothed ring, and the driven gear meshes with both the drive gear and the toothed ring of the drive sleeve.

10. A method for operating an openable / closable rim blade assembly, characterized in that, Includes the following steps: Drive sleeve to rotate; The pusher moves along the wheel axis under the drive of the drive sleeve; The pusher plate pushes the inner end of the oscillating blade to move along the wheel axis; The oscillating blades oscillate around the rotating connection between the blades and the spokes under the push of the pusher plate, so that the outer ends of the oscillating blades move away from the spokes and open the ventilation window; The drive sleeve rotates in the opposite direction; The pusher moves in the opposite direction along the wheel axis under the threaded drive of the drive sleeve; The pusher releases the thrust on the inner end of the oscillating blade; The oscillating blades oscillate in the opposite direction around the point of rotational connection with the spokes, causing the outer end of the oscillating blades to approach the spokes and close the ventilation window.

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