Flying car with shared wheel and wing power

Abstract

The invention discloses an aerocar with shared wheel wing power. A foldable wheel wing power mechanism is arranged on a car body. The foldable wheel wing power mechanism comprises a foldable machine arm, a rotor wing and a power unit; one end of the foldable machine arm is hinged to the vehicle body, and the foldable machine arm executes unfolding and folding actions relative to the vehicle body; the rotor wings are arranged at the tail ends of the foldable arms; the power units are embedded in the foldable arms, the power units adopt axial double-rotor motors, the rotor motor on one side is in transmission connection with the rotor wings, and the rotor wings are driven to move in the flight mode; the rotor motor on the other side is connected with the tires through the transmission mechanism when the foldable machine arms are folded, and the tires are driven to move in the land mode. The rotors and the wheels are driven by the double-rotor motors respectively, efficient reuse of flight power and ground running power is achieved, and therefore the number of power systems is reduced while independent and controllable power is guaranteed, the structural complexity of the whole vehicle and the weight of the system are reduced, and the flight efficiency and the energy utilization rate are improved advantageously.

Description

Technical Field

[0001] This invention relates to the field of flying cars and electric drive technology, specifically to a flying car with shared wheel and wing power, and more particularly to a flying car structural scheme that utilizes an axial dual-rotor motor to achieve shared power between the flight rotor system and the ground tire system, and integrates the folding arms with the vehicle body to achieve switching between land and air operating conditions. Background Technology

[0002] With the development of the low-altitude economy, flying cars, which combine ground driving and aerial flight capabilities, are gradually becoming an important development direction in the field of intelligent transportation. These vehicles typically need to switch between land and flight modes under different operating conditions to meet the demands of road traffic efficiency and aerial maneuverability, respectively. However, due to significant differences between the two operating modes in terms of power output, load characteristics, and structural layout, flying cars face significant technical challenges in areas such as power system integration and structural design.

[0003] Existing flying cars typically employ separate power systems for ground driving and flight, each driving one wheel and one rotor. While this approach is functionally straightforward, it usually requires multiple motors and their associated transmission mechanisms. This not only leads to a complex overall vehicle structure and low system integration but also significantly increases the vehicle's weight and size, hindering lightweight design and energy efficiency improvements in flight mode. Furthermore, the coordination and control between these multiple power systems is challenging, limiting overall vehicle reliability and ease of maintenance.

[0004] When a flying car is in land mode, its energy consumption, drag, and dimensions significantly impact its economy and practicality. However, in current technology, the rotor and its arms are often externally mounted or simply folded when on the ground. This makes it difficult to achieve a compact integration of the rotor system with the vehicle body structure, resulting in significant external space occupation, increased wind resistance, and negatively impacting the vehicle's aerodynamic performance and overall shape consistency. Furthermore, in urban roads, narrow spaces, or complex environments, such externally mounted or exposed structures pose a certain collision risk, affecting the vehicle's safety and adaptability.

[0005] Therefore, existing flying cars still have significant shortcomings in terms of power system integration, arm structure design, and the integration of the arm and the vehicle body, which need to be further improved. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this application proposes a flying car with shared wheel and wing power. It introduces a folding arm structure and a dual-rotor motor structure. This structure, through the integrated design of the folding arms and the vehicle body, allows the arms to fit snugly against the body when not in operation. This not only reduces the overall dimensions and footprint of the vehicle but also significantly improves its parking convenience in urban environments. Furthermore, the use of an axial dual-rotor motor enables shared power between the rotor system and the wheel drive system, reducing the number of power systems and lowering the overall structural complexity and weight of the vehicle.

[0007] The technical solution adopted in this invention is as follows: A flying car with shared wheel and wing power, comprising: Vehicle body; And a foldable wheel wing power mechanism mounted on the vehicle body; the foldable wheel wing power mechanism includes a foldable arm, a rotor, and a power unit; One end of the foldable arm is hinged to the vehicle body, and performs unfolding and closing actions relative to the vehicle body. The rotor is located at the end of the foldable arm; The power unit is embedded in the foldable arm. The power unit adopts an axial dual-rotor motor. One rotor motor is connected to the rotor through a transmission and drives the rotor to move in flight mode. The other rotor motor is connected to the tire through a transmission mechanism when the foldable arm is closed and drives the tire to move in land mode.

[0008] Furthermore, a set of foldable wheel wing power mechanisms is installed at the front and rear of the vehicle body; each set of foldable wheel wing power mechanisms includes two symmetrically distributed foldable arms and rotors on the foldable arms.

[0009] Furthermore, the foldable arm includes a tilting arm and a rotor arm. One end of the tilting arm is rotatably connected to the front cover, and the other end is rotatably connected to the rotor arm via a rotating shaft. The tilting arm rotates relative to the vehicle body around the hinge point to achieve up and down tilting motions. During this process, the rotor arm is driven to rotate synchronously, thereby completing the actions of unfolding and folding relative to the vehicle body.

[0010] Furthermore, the rotor includes a rotor shaft and multiple rotor blades; the multiple rotor blades are rotatably connected to the rotor shaft; In flight mode, each rotor blade unfolds around the rotor axis and is located in the same plane of rotation; in land mode, each rotor blade rotates around its rotor axis under the action of the drive mechanism, and then retracts and fits together in sequence to achieve foldable rotor.

[0011] Furthermore, each rotor blade has a multi-layered nested structure (or a flexible and stretchable material), and each rotor blade has an elastic element inside. One end of the elastic element is fixedly connected to the inside of the outermost rotor blade, and the other end is connected to the rotor shaft. The elastic element causes each rotor blade to contract radially inward. In flight mode, after each rotor blade rotates and reaches a predetermined speed, the inertial force or centrifugal force generated during the rotation causes the elastic element to release stored energy, thereby pushing the rotor blade to unfold radially outward, thus converting it into an unfolded state.

[0012] Furthermore, a meshing sleeve is installed at the output end on one side of the motor, and a bevel gear is installed at the center of the rim; in land mode, the meshing sleeve meshes with the bevel gear to drive the tires.

[0013] Furthermore, the axial dual-rotor motor includes a first stator, a second stator, a stator mounting base, a first rotor, and a second rotor; the first stator and the second stator are mounted on both sides of the stator mounting base, and the first rotor and the second rotor are located on the outer sides of the first stator and the second stator, respectively; the first rotor drives the rotor blades through a central shaft, and the second rotor drives the tires through gear transmission, and the two power transmission paths are independent of each other.

[0014] Furthermore, in flight mode or land mode, the steering control is achieved by adjusting the stator current in the left and right motors to change the speed and output torque of the corresponding rotors.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention uses dual rotor motors to drive the rotor and wheels respectively, achieving efficient reuse of flight power and ground driving power. This reduces the number of power systems, lowers the complexity of the vehicle structure and the weight of the system, and helps improve flight efficiency and energy utilization.

[0016] 2. This invention utilizes an arm-folding mechanism to allow the rotor system to be seamlessly integrated with the vehicle's exterior in land mode, achieving integrated storage. This not only effectively reduces wind resistance and overall dimensions but also significantly improves the vehicle's safety and maneuverability on the ground, avoiding the collision risks associated with exposed rotors. Thus, it balances flight performance and ground driving performance, enhancing the flying car's overall applicability in various scenarios. Rapid deployment in flight mode effectively reduces the vehicle's footprint and improves its parking and driving adaptability.

[0017] 3. In this invention, the inner and outer rotors are connected to different power output mechanisms in the arm folding mechanism, so that ground driving and flight propulsion are structurally independent and functionally coordinated, thereby improving the space utilization, energy utilization efficiency and operational reliability of the whole vehicle, and has good engineering application value. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the flight mode structure of the flying car of the present invention.

[0019] Figure 2 This is a schematic diagram of the land-based mode structure of the flying car of the present invention.

[0020] Figure 3 This is a schematic diagram of the bottom structure of the flying car of the present invention.

[0021] Figure 4 This is a partial structural diagram of the rotor arm of the flying car of the present invention.

[0022] Figure 5 This is a schematic diagram of the flying car tire structure of the present invention.

[0023] Figure 6 This is a schematic diagram of the flying car rotor system of the present invention.

[0024] Figure 7 This is a schematic diagram of the external structure of the flying car motor of the present invention.

[0025] Figure 8 This is a schematic diagram of the internal structure of the flying car motor of the present invention.

[0026] Figure 9 This is a schematic diagram of the rotor deployment structure of the flying car of the present invention.

[0027] Figure 10 This is a schematic diagram of the rotor retraction structure of the flying car of the present invention.

[0028] Figure 11 This is a schematic diagram of the internal structure of a portion of the rotor of the flying car of the present invention.

[0029] In the diagram: 1. Vehicle body; 2. Tilting arm; 3. Rotor arm; 4. Rotating shaft; 5. Rotor; 6. Tire; 7. Drive unit; 8. Wheel rim; 9. Bevel gear; 10. Engaging sleeve; 11. Central shaft; 12. Connecting flange; 13. Motor housing; 14. Motor housing hole; 15. Connecting flange hole; 16. Motor; 17. Second rotor; 18. Second stator; 19. Stator mounting base; 20. First stator; 21. First rotor; 22. Countersunk hole; 23. Rotor blade; 24. Rotor connecting hole; 25. Rotor shaft; 26. Elastic element. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship 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, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] like Figure 1 As shown, this invention is a flying car with shared wheel and wing power, including a vehicle body 1. A set of foldable wheel and wing power mechanisms is installed on the front and rear cover plates of the vehicle body 1. Each foldable wheel and wing power mechanism includes a foldable arm, a rotor 5, and a power unit. One end of the foldable arm is rotatably connected to the front / rear cover plate of the vehicle body 1, and the other end is equipped with a rotor 5, which is fitted with a power unit. When the foldable arm is retracted downwards, the power unit is powered by the tires 6 to drive the vehicle in land driving mode. When the foldable arm is extended upwards, the power unit is separated from the tires 6, and the power unit drives the rotor 5 to operate, achieving flight mode.

[0035] Combined with appendix Figure 1-11 The structural design and the connection relationships between structures are as follows: The vehicle body 1 consists of necessary components such as tires 6, vehicle suspension, and headlights.

[0036] The foldable wheel hub power mechanism on the front and rear covers has the same structure. This embodiment will be described in detail using the front cover as an example. Two foldable arms are symmetrically distributed on the left and right sides of the front cover. Each foldable arm is formed by hinged connection of a tilting arm 2 and a rotor arm 3. One end of the tilting arm 2 is rotatably connected to the front cover, and the other end is rotatably connected to the rotor arm 3 via a rotating shaft 4. The tilting arm 2 rotates relative to the vehicle body around the hinge point, realizing the up and down tilting motion. During this process, it synchronously drives the rotor arm 3 to rotate, thereby completing the action of unfolding and folding the foldable arms relative to the vehicle body.

[0037] More specifically, the tilting arm 2 is equipped with a tilting drive mechanism for driving the movement of the tilting arm 2. When the tilting arm 2 is extended to the target angle, the locking mechanisms at the ends of the tilting arm 2 and the rotor arm 3 are locked, so that the angle can be maintained.

[0038] like Figure 9-11 As shown, the rotor 5 is a foldable structure, including a rotor shaft 25 and multiple rotor blades 23, which are rotatably connected to the rotor shaft 25. The rotor 5 has a multi-layered nested structure (or a flexible, stretchable material). An elastic element 26 is installed inside each rotor blade 23. One end of the elastic element 26 is fixedly connected to the inner part of the outermost rotor 5, and the other end is connected to the rotor shaft 25. When the rotor 5 is not in operation, the elastic element 26 is in a compressed or pre-tightened state, pulling the rotor blades 22 back into the rotor housing to reduce the overall size. In flight mode, after the rotor shaft 25 drives the rotor blades 23 to rotate and reach a predetermined speed, the inertial or centrifugal force generated during rotation causes the elastic element 26 inside the rotor blades 23 to release stored energy, thereby pushing the rotor blades 22 to expand radially outward, automatically changing from a retracted state to an expanded state, forming a normal lift configuration. When the rotor 5 stops rotating or the rotation speed drops below the set threshold, the rotor blades 22 can be retracted to the retracted state under the action of the reset force of the elastic element 26, thereby realizing the automatic switching of the rotor 5 between flight mode and land mode.

[0039] In flight mode, each rotor blade 22 unfolds around the rotor axis 25 and lies in the same plane of rotation to form an effective lifting surface. In land mode, each rotor blade 22 rotates around the rotor axis 25 toward the rotor arm 3, causing the rotor blades 22 to retract sequentially and fit together along the axial direction of the rotor arm 3, thus forming a compact integrated structure between the rotor system and the arm. When the arm is in the retracted state, the rotor 5 is located outside the rotor arm 3 and arranged along the outer contour of the vehicle body. To reduce the risk of the rotor 5 being impacted by external forces while driving or parked on land, the rotor 5 is provided with a gap space relative to the vehicle body, and the arm structure provides shielding and support for the rotor, thereby playing a certain protective role.

[0040] A ring-shaped rotor connection hole 24 is provided at the connection part of the rotor body. The rotor connection hole 24 is opposite to the connection flange 12 and is fixedly connected to it by bolts to realize the transmission of power.

[0041] like Figure 6-8 As shown, the power unit includes a motor 16, which is an axial dual-rotor motor. It includes a first stator 20, a second stator 18, a central shaft 11, a stator mounting base 19, a first rotor 21, and a second rotor 17. The first stator 20 and the second stator 18 are mounted on both sides of the stator mounting base 19, and the first rotor 21 and the second rotor 17 are located outside the first stator 20 and the second stator 18, respectively. The first rotor 21 drives the rotor blade 5, and the second rotor 17 drives the tires 6; the two are independent of each other in the power transmission path.

[0042] More specifically, the second rotor 17 is equipped with a meshing sleeve 10, and a bevel gear 9 is mounted at the center of the rim 8; in land mode, the meshing sleeve 10 and the bevel gear 9 mesh to drive the tire 6.

[0043] More specifically, the first rotor 21 is fixedly connected to the connecting flange 12, and is driven by the rotor shaft 25 through the connecting flange 12 to transmit power to the rotor 5, driving the rotor 5 in flight mode.

[0044] Combination Figure 7 The aforementioned axial dual-rotor motor is housed within the housing 13, and the stator mounting base 19 is fixedly connected to the housing 13. A mounting hole is provided at the end of the rotor arm 3, and the housing 13 is fitted into this mounting hole. A connecting flange 12 is provided on the outward-facing (away from the vehicle body) end face of the housing 13, and the connecting flange 12 is fixedly connected to the rotor connection hole 24 on the rotor body by bolts.

[0045] The inner end face of the outer casing 13 (facing the vehicle body) is provided with an annular flange ring. An array of motor housing holes 14 are arranged on the flange ring. These motor housing holes 14 are aligned with countersunk holes 22 arranged in annular pattern on the rotor arm 3, and are connected by bolts to achieve the fixed installation of the motor 16. Figure 7 As shown, the connecting flange 12 has several mounting through holes 15 evenly distributed around its circumference. A countersunk hole 22, matching the shape of the connecting flange, is provided at a corresponding position on the rotor arm 3. The inner diameter of the countersunk hole 22 is used for radial positioning of the motor housing 13, and the bottom surface of the countersunk hole 22 is used to form a tight contact with the connecting flange. During assembly, the connecting flange of the motor housing is fitted into the countersunk hole 22 of the rotor arm 3, and the motor 16 and the rotor arm 3 are connected by bolts.

[0046] A bevel gear 9 is located at the center of the rim 8 and coaxial with the tire 6. The bevel gear 9 is used to cooperate with the meshing sleeve 10 located on the second rotor 17 of the motor. A drive unit 7 is located at the center of the rim 8. When the bevel gear 9 is in the engaged position, the bevel gear 9 and the meshing sleeve 10 are engaged with each other, thereby establishing a power transmission path between the tire 6 and the motor 16. When the bevel gear 9 is in the disengaged position, the bevel gear 9 is disengaged from the meshing sleeve 10, thereby interrupting the power transmission.

[0047] like Figure 2 As shown, when the flying car switches from flight mode to land mode, the arms first move from the extended state to the retracted state. The flipping arm 2 and the rotor arm 3 gradually conform to the shape of the vehicle body 1 under the action of flipping and relative rotation, and finally maintain alignment with the vehicle body 1. Simultaneously, the rotor blades 22 retract into the rotor under the action of the elastic element 26, and the rotor blades 22 rotate around the rotor shaft 5, causing the rotor blades 22 to retract and conform to the rotor arm 3 along its axial direction.

[0048] After the rotor 5 retracts, the drive unit 7, located at the center of the wheel rim 8, activates, driving the bevel gear 9 to extend axially outward. This allows the bevel gear 9 to engage with the meshing sleeve 10 on the second rotor 17, establishing a power connection between the motor 16 and the wheel 6. At this time, the entire arm is hidden inside the vehicle body, effectively reducing the vehicle's dimensions in land driving mode. Then, the second stator 18 in the axial dual-rotor motor 16 is energized, driving the second rotor 17 to rotate. The second rotor 17 transmits power to the wheel 6 through the meshing sleeve 10, bevel gear 9, and wheel rim 8 structure, thus driving the wheel 6 and propelling the flying car in land mode. During vehicle steering, the current in the second stator 18 corresponding to the left and right wheels 6 is adjusted using differential control principles to change the speed and output torque of the corresponding second rotor 17, thereby achieving steering control of the flying car.

[0049] like Figure 1As shown, when the flying car switches from land mode to flight mode, the second stator 18 in the axial dual-rotor motor 16 is first de-energized, stopping the power output to the wheels 6. Subsequently, the drive unit 7 at the center of the wheel rim 8 reverses its action, driving the bevel gear 9 to retract axially, disengaging it from the meshing sleeve 10, thereby interrupting the power connection between the wheels 6 and the motor 16. After the power disconnection is completed, the arms flip open from the retracted state to the deployed state. The flipping arms 2 rotate around the vehicle's rotation axis, and the rotor arms 3 adjust their attitude relative to the flipping arms 2, so that the rotor system ultimately maintains the preset flight attitude. At the same time, the rotor 5 first unfolds circumferentially, then begins to rotate and reaches a predetermined speed. Under the action of the inertial force or centrifugal force generated during the rotation of the rotor 5, the elastic element 26 releases the stored energy, thereby pushing the rotor blades 23 to unfold radially outward. Then, the first stator 20 in the axial dual-rotor motor 16 is energized, driving the first rotor 21 to rotate. The first rotor 21 transmits power to the rotor system through the connecting flange 12, thereby driving the rotor 5 to rotate and generating lift and thrust, realizing the transition of the flying car from ground driving state to flight state. In addition, the differential principle is also used for the steering function in flight mode.

[0050] The above embodiments are only used to illustrate the design concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes or modifications made based on the principles and design ideas disclosed in the present invention are within the protection scope of the present invention.

Claims

1. A flying car with shared wheel and wing power, characterized in that, include: Vehicle body (1); And a foldable wheel wing power mechanism provided on the vehicle body (1); the foldable wheel wing power mechanism includes a foldable arm, a rotor (5), and a power unit; One end of the foldable arm is hinged to the vehicle body (1) to perform unfolding and closing actions relative to the vehicle body (1); The rotor (5) is located at the end of the foldable arm; The power unit is embedded in the foldable arm. The power unit adopts an axial dual rotor motor. One rotor motor is connected to the rotor (5) through a transmission mechanism and drives the rotor (5) to move in flight mode. The other rotor motor is connected to the tire (6) through a transmission mechanism when the foldable arm is closed and drives the tire (6) to move in land mode.

2. The flying car with shared wheel and wing power according to claim 1, characterized in that, A set of foldable wheel wing power mechanism is set at the front and rear of the vehicle body (1); each set of foldable wheel wing power mechanism includes two symmetrically distributed foldable arms and rotors (5) on the foldable arms.

3. A flying car with shared wheel and wing power according to claim 2, characterized in that, The foldable arm includes a flip arm (2) and a rotor arm (3). One end of the flip arm (2) is rotatably connected to the front cover, and the other end is rotatably connected to the rotor arm (3) through a rotating shaft (4). The flip arm (2) rotates relative to the vehicle body around the hinge point to achieve up and down flipping motion. During this process, the rotor arm (3) is driven to rotate synchronously. Thus, the action of unfolding and folding relative to the vehicle body is completed.

4. A flying car with shared wheel and wing power according to claim 1, characterized in that, The rotor (5) includes a rotor shaft (25) and multiple rotor blades (23); the multiple rotor blades (23) are rotatably connected to the rotor shaft (25); In flight mode, each rotor blade (22) unfolds around the rotor axis (25) and is located in the same plane of rotation; in land mode, each rotor blade (22) rotates around its rotor axis (25) under the action of the drive mechanism, and is sequentially folded and arranged to achieve the foldability of the rotor (5).

5. A flying car with shared wheel and wing power according to claim 4, characterized in that, Each rotor blade (22) is a multi-layer nested structure or a flexible and stretchable material. Each rotor blade (22) has an elastic element (26) inside. One end of the elastic element (26) is fixedly connected to the inside of each outermost rotor blade (22), and the other end is connected to the rotor shaft (25). The elastic element (26) causes each rotor blade (22) to retract radially inward. In flight mode, after each rotor blade (22) rotates and reaches a predetermined speed, the elastic element (26) releases stored energy under the action of inertial force or centrifugal force generated during the rotation, thereby pushing the rotor blade (22) to unfold radially outward and convert to the unfolded state.

6. A flying car with shared wheel and wing power according to claim 1, characterized in that, A meshing sleeve (10) is installed on one output end of the motor (16), and a bevel gear (9) is installed at the center of the rim (8); in land mode, the meshing sleeve (10) meshes with the bevel gear (9) to drive the tire (6).

7. A flying car with shared wheel and wing power according to claim 6, characterized in that, The axial dual rotor motor includes a first stator (20), a second stator (18), a stator mounting base (19), a first rotor (21), and a second rotor (17). The first stator (20) and the second stator (18) are mounted on both sides of the stator mounting base (19), and the first rotor (21) and the second rotor (17) are located on the outside of the first stator (20) and the second stator (18), respectively. The first rotor (21) drives the rotor (5) through the connecting flange (12), and the second rotor (17) drives the tire (6) through gear transmission. The two power transmission paths are independent of each other.

8. A flying car with shared wheel and wing power according to claim 7, characterized in that, In flight mode or land mode, steering control is achieved by adjusting the stator current in the left and right motors to change the speed and output torque of the corresponding rotors.

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