Flying car and control method

Abstract

The present invention discloses a flying car and a control method, belonging to the technical field of flying cars, comprising a car and a flying device; the flying device is disposed on the top of the car; the flying device comprises a flying device shell, a bracket, and a driving mechanism; the flying device shell is used to support the bracket; the bracket comprises a first bracket, a second bracket, a third bracket, and a fourth bracket, each having a rotor at one end; the driving mechanism is disposed within the flying device shell and is used to drive the first bracket, the second bracket, the third bracket, and the fourth bracket to move linearly in synchronization, thereby changing the distance between the rotor and the center of the flying device shell. The flying car and control method of the present invention have a simple retraction step, effectively converge the rotor toward the center of the car, provide good stability and safety when the car is driven on land, and are not susceptible to scratching or collision. The bracket is provided with protective measures to reduce damage caused by friction and collision.

Description

Technical Field

[0001] The present invention belongs to the technical field of flying cars, and in particular relates to a flying car and a control method thereof. Background Art

[0002] A flying car is a dual-purpose vehicle capable of flying in the air or driving on land. With increasing traffic congestion and the continuous advancement of science and technology, flying cars have become a hot topic in current research and development. Currently, the aircraft used in flying cars on the market are generally multi-rotors. Compared to single-rotor aircraft, multi-rotors have longer legs and more rotors, providing the vehicle with stable lift from different positions. They are also easy to adjust and control, enabling vertical takeoff and landing, hovering, and requiring less space for takeoff. These advantages have led to a wide range of applications.

[0003] However, current research on multi-rotor aircraft primarily focuses on how to safely take off and land vehicles, often overlooking other issues. Multi-rotor aircraft have heavy rotors. If they are not retracted toward the center of the vehicle, the vehicle's driving stability can be compromised. During acceleration, braking, cornering, climbing, or encountering uneven road conditions, the vehicle can experience jolting, drifting, or even overturning, compromising driving safety. Existing technologies typically use telescopic or folding rods to retract or fold multi-rotor aircraft, further enhancing the center of gravity convergence function. However, these rods have a fixed, non-retractable portion, limiting the retraction distance of the rotors and preventing them from being very close to the center of the vehicle, resulting in poor convergence. Furthermore, uneven force distribution during retraction can cause the vehicle to drift to one side, resulting in numerous drawbacks. Furthermore, because the rotors are far from the center of the vehicle, they are susceptible to damage from external scrapes and collisions during land travel. The brackets also lack protective measures, failing to protect the rotors in the event of a collision. Therefore, there is a need to address these shortcomings. Summary of the Invention

[0004] The present invention aims to address the above-mentioned shortcomings by providing a flying car and control method. This invention aims to address the problems of current multi-rotor aircraft, such as the difficulty of converging the rotors toward the center of the vehicle, resulting in poor vehicle stability and safety, the rotors being susceptible to damage from scrapes and collisions, and the lack of rotor protection measures on the bracket. To achieve the above-mentioned objectives, the present invention provides the following technical solutions:

[0005] A flying car comprises a car and a flying device; the flying device is mounted on the top of the car; the flying device comprises a flying device shell 1, a bracket 2, and a drive mechanism 3; the flying device shell 1 is used to support the bracket 2; the bracket 2 comprises a first bracket 21, a second bracket 22, a third bracket 23, and a fourth bracket 24, each having a rotor at one end; the drive mechanism 3 is disposed within the flying device shell 1 and is used to drive the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 to move linearly in synchronization, thereby changing the distance between the rotor and the center of the flying device shell 1. As can be seen from the above structure, the flying device is mounted at the center of the top of the car and connected to the vehicle body. The flying device comprises the flying device shell 1, the bracket 2, and the drive mechanism 3. The flying device shell 1 supports the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24, and prevents foreign matter from entering the flying device. The four rotors are connected to the vehicle housing 1 via a first bracket 21, a second bracket 22, a third bracket 23, and a fourth bracket 24. The vehicle housing 1 is in turn connected to the vehicle. The rotors rotate to provide the vehicle with the lift it needs to fly, enabling flight. A drive mechanism 3 is located centrally within the vehicle housing 1 and drives the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 to perform synchronous linear movement, varying the distance between the rotors and the center of the vehicle housing 1. This allows for adjustment of the rotor position and the volume of the vehicle. This simple structure allows for easy control. Prior art typically uses telescopic or folding rods to retract or fold multirotor aircraft, further enhancing the center of gravity convergence function. However, the telescopic rod structure consists of a fixed portion and a movable portion. Even when the movable portion of the telescopic rod is retracted into the fixed portion or the folding rod is folded, there is a section that cannot be retracted. This limits the retraction distance of the rotors, preventing them from being very close to the center of the vehicle, resulting in poor convergence. Furthermore, uneven force distribution during retraction can cause the vehicle to shift to one side, leading to numerous drawbacks. However, the present invention, through the coordination of the bracket 2 and the drive mechanism 3, allows the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 to bring the heavier rotor portion very close to the center of the vehicle during retraction, without obstruction from the fixed portion, resulting in a better convergence effect. Furthermore, because the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 extend and retract simultaneously, the vehicle is less likely to jolt, shift, or overturn even when accelerating, braking, turning, climbing a slope, or encountering uneven road conditions. This maintains overall stability and enhances safety, making it more suitable for land-based driving. The flying car of the present invention has a simple structure, is easy to control, has a good rotor convergence effect, is not prone to bumping, deflecting or overturning, and has good driving stability.

[0006] Furthermore, the drive mechanism 3 includes an upper gear 31, a lower gear 32, and a drive motor 33. The inner sides of the first and second brackets 21, 22 are provided with a rack that meshes with the upper gear 31, and the first and second brackets 21, 22 are symmetrical about the center of the upper gear 31. The inner sides of the third and fourth brackets 23, 24 are provided with a rack that meshes with the lower gear 32, and the third and fourth brackets 23, 24 are symmetrical about the center of the lower gear 32. The drive motor 33 is used to drive the upper and lower gears 31, 32 to rotate synchronously. As can be seen from the above structure, the drive motor 33 is provided with a drive shaft and is connected to the upper and lower gears 31, 32 via the drive shaft to achieve synchronous rotation of the upper and lower gears 31, 32. The inner sides of the first and second brackets 21, 22 are provided with a rack that meshes with the upper gear 31, and the first and second brackets 21, 22 are symmetrical about the center of the upper gear 31. When the upper gear 31 rotates, the first and second brackets 21, 22 will synchronously perform linear movements of the same distance but in opposite directions. The inner sides of the third and fourth brackets 23 and 24 are equipped with racks that mesh with the lower gear 32. The third and fourth brackets 23 and 24 are symmetrical about the center of the lower gear 32. When the lower gear 32 rotates, the three brackets 23 and 24 undergo synchronous linear movement, moving the same distance but in opposite directions. When the drive motor 33 rotates clockwise, it drives the upper and lower gears 31 and 32 to rotate clockwise, thereby extending the first, second, third, and fourth brackets 21, 22, 23, and 24 away from the center of the aircraft housing 1. When the drive motor 33 rotates counterclockwise, it drives the upper and lower gears 31 and 32 to rotate counterclockwise, thereby retracting the first, second, third, and fourth brackets 21, 22, 23, and 24 toward the center of the aircraft housing 1. Because the first, second, third, and fourth brackets 21, 22, 23, and 24 extend and retract synchronously, the vehicle is prevented from unilateral deviation during the extension and retraction process, ensuring excellent driving stability and safety.

[0007] Furthermore, pulley sleeves are provided at the other ends of the first, second, third, and fourth brackets 21, 22, 23, and 24. A pulley shaft is mounted within the pulley sleeves. Eight pressure sensors are installed on the inner walls of the pulley sleeves. A pulley 4 is mounted on the pulley shaft. As can be seen from the above structure, while the vehicle is traveling on land, the first, second, third, and fourth brackets 21, 22, 23, and 24 of the flying device will retract. However, even after retraction, the flying device may still encounter friction or collisions due to factors such as the complex terrain or poor road conditions in which the flying vehicle is located, and the brackets may be unable to protect the rotors. Therefore, the present invention provides pulley sleeves at the other ends of the first, second, third, and fourth brackets 21, 22, 23, and 24. A pulley shaft is mounted within the pulley sleeves, and pulley 4 is connected to the pulley shaft. If the vehicle accidentally encounters an external collision, pulley 4 can first contact the external environment and reduce friction by sliding, thereby protecting the rotors. The inner wall of the pulley sleeve is equipped with eight pressure sensors, evenly distributed throughout the sleeve. When pulley 4 is subjected to external pressure, it drives the attached pulley shaft to move. This displacement of the pulley shaft impacts the pressure sensors on the sleeve, which receive the pressure information. When the pressure sensed by the pressure sensors exceeds a preset maximum pressure, a signal is transmitted to the vehicle's controller. The controller then controls the drive motor 33 to rotate the upper and lower gears 31 and 32 synchronously clockwise, retracting pulley 4 by a preset distance to prevent further damage.

[0008] Furthermore, the pulley sleeve is also equipped with a position sensor; the position sensor is used to monitor the distance between the pulley sleeve and the aircraft shell 1. As can be seen from the above structure, the position sensor on the pulley sleeve can monitor the position of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24, and preset the closest position and the farthest position from the aircraft shell 1, thereby limiting its extension and retraction range. When the first bracket 21 and the second bracket 22, or the third bracket 23 and the fourth bracket 24 reach the preset closest position or the farthest position from the aircraft shell 1, the position sensor transmits a signal to the controller, causing the controller to control the drive motor 33 to stop operation, thereby preventing excessive extension and retraction from causing the rotor or pulley 4 to collide with the aircraft shell 1.

[0009] Furthermore, guide rails are provided on the upper and lower sides of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24; eight guide openings are also provided on the sidewall of the aircraft housing 1; and the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 each cooperate with two guide openings. As can be seen from the above structure, the guide rails are provided on the upper and lower sides of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24, and each cooperates with two guide openings. This is to allow the guide openings to fix and guide their positions, preventing the movement directions of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 from deviating during extension and retraction, thereby achieving a good guiding effect.

[0010] Furthermore, the rotors of the first bracket 21 are at the same height as the second bracket 22, and the third bracket 23 and the fourth bracket 24. As can be seen from the above structure, although the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 are at different heights, the connectors connecting the rotors at the ends of the first bracket 21, the second bracket 22, and the third bracket 23 and the fourth bracket 24 are at different heights, thereby achieving the effect of maintaining the same height of the four rotors, thereby ensuring that the lift force at various positions on the vehicle is consistent when the rotors are in operation, ensuring the vehicle's stable flight.

[0011] Furthermore, the top of the car is provided with a circular track 5 and two torsion springs 6; the aircraft shell 1 is cylindrical with a closed top; the bottom of the aircraft shell 1 is provided with eight guide posts that cooperate with the circular track; and the two torsion springs 6 are used to provide torsional forces in opposite directions to the aircraft shell 1. As can be seen from the above structure, the car may encounter an accidental collision while driving on land. Once a collision occurs, the aircraft device is easily damaged, affecting the car's driving and causing economic losses. To reduce the damage to the aircraft device caused by this situation, the top of the car is further provided with a circular track 5 and two torsion springs 6, and the bottom of the aircraft shell 1 is provided with eight guide posts that cooperate with the circular track. When the aircraft device encounters a collision, the guide posts of the aircraft shell 1 can rotate along the circular track 5, driving the aircraft shell 1 to rotate, thereby changing the positions of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24, reducing the damage it suffers from the impact. There are two torsion springs 6, distributed on both sides of the aircraft shell 1, one end of which is connected to the aircraft shell 1 and the other end is connected to the top of the car, which is used to provide torque in the opposite direction when the aircraft shell 1 rotates. Under normal land driving conditions, it can limit the aircraft shell 1 from rotating, and the fixing effect is good; when the aircraft is hit, although the aircraft shell 1 has rotated along the circular track 5, under the action of the two torsion springs 6, the rotation amplitude of the entire aircraft can be limited, and the position of the aircraft can be restored after the external force is removed, and the buffering effect is good.

[0012] Furthermore, an electric lock 7 is secured to the top of the vehicle; this lock is used to lock or unlock one of the guide posts. As can be seen from the above structure, when the vehicle is ready to fly, the controller controls the electric lock 7 to lock one of the guide posts, thereby securing the flying device and preventing displacement of the flying device housing 1, achieving a highly effective fixation. When the vehicle is ready to drive on land, the controller controls the electric lock 7 to unlock the guide posts, thereby unlocking the flying device and preventing it from twisting to minimize damage in the event of a collision.

[0013] Furthermore, it includes a controller; the controller is electrically connected to the drive motor 33, the pressure sensor, the position sensor, and the electric lock 7. As can be seen from the above structure, the controller is electrically connected to the drive motor 33 and is used to control the rotation direction and rotation status of the drive motor 33. The controller is electrically connected to the pressure sensor and is used to receive the pressure signal from the pressure sensor to control the retraction of the first bracket 21 and the second bracket 22, the third bracket 23 and the fourth bracket 24, and to brake the flying car to avoid external collision damage. The controller is electrically connected to the position sensor and is used to control the retraction position of the first bracket 21 and the second bracket 22, the third bracket 23 and the fourth bracket 24. The controller is electrically connected to the electric lock 7 and is used to control the locked or unlocked state of the electric lock 7.

[0014] Furthermore, a flying car according to the above content includes an air flight preparation step, a land driving preparation step, and a land driving risk avoidance step;

[0015] The flight preparation steps are as follows: the controller controls the drive motor 33 to drive the upper gear 31 and the lower gear 32 to rotate synchronously clockwise; the upper gear 31 drives the first bracket 21 and the second bracket 22 to move linearly, so that the rotors of the first bracket 21 and the second bracket 22 are away from the aircraft housing 1; the lower gear 32 drives the rotors of the third bracket 23 and the fourth bracket 24 to move away from the aircraft housing 1; when the position sensor detects that the rotors have reached a preset maximum position from the aircraft housing 1, the controller controls the drive motor 33 to stop; and the controller controls the electric lock 7 to lock the guide column.

[0016] The land travel preparation steps are specifically as follows: the controller controls the drive motor 33 to drive the upper gear 31 and the lower gear 32 to rotate synchronously counterclockwise; the upper gear 31 drives the first bracket 21 and the second bracket 22 to move linearly, so that the rotors of the first bracket 21 and the second bracket 22 approach the aircraft housing 1; the lower gear 32 drives the rotors of the third bracket 23 and the fourth bracket 24 approach the aircraft housing 1; when the position sensor detects that the rotors have reached a preset closest position to the aircraft housing 1, the controller controls the drive motor 33 to stop; and the controller controls the electric lock 7 to unlock the guide column.

[0017] The land driving risk avoidance steps are specifically as follows: after the land driving preparation step, the flying car starts to drive on the ground. When the pressure sensed by the pressure sensor exceeds the preset maximum pressure value, the controller controls the drive motor 33 to drive the upper gear 31 and the lower gear 32 to rotate synchronously clockwise, so that the pulley 4 retracts a preset distance, and then the drive motor 33 stops, and the flying car brakes.

[0018] Flying cars have two modes of travel: flying in the air and driving on land. Before the vehicle enters the airborne state, the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 need to be extended, and then the rotors need to provide sufficient lift for the vehicle to take off and maintain flight. Therefore, an airborne flight preparation step is required: the controller controls the drive motor 33 to drive the upper gear 31 and the lower gear 32 to rotate synchronously clockwise. The upper gear 31 further drives the first bracket 21 and the second bracket 22 to linearly extend, so that the rotors of the first bracket 21 and the second bracket 22 are separated from the aircraft shell 1. The lower gear 32 drives the third bracket 23 and the fourth bracket 24 to linearly extend, so that the rotors of the third bracket 23 and the fourth bracket 24 are separated from the aircraft shell 1. When the position sensor detects that the rotors have reached the preset maximum position from the aircraft shell 1, the controller controls the drive motor 33 to stop. The drive motor 33 will continue to operate for a certain period of time due to inertia and then stop. After the drive motor 33 stops, the positions of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 are fixed, and the controller controls the electric lock 7 to lock the guide column, completing the locking of the aircraft shell 1. Then the rotors start working, and the lift generated by the rotation of the rotors allows the car to take off. When the car enters the land driving state, the first bracket 21, the second bracket 22, the third bracket 23 and the fourth bracket 24 need to be retracted to reduce the size of the flying device, so as to facilitate the subsequent driving of the car on land. Therefore, it is necessary to implement the land driving preparation steps. The controller controls the drive motor 33 to drive the upper gear 31 and the lower gear 32 to rotate synchronously counterclockwise, so that the upper gear 31 drives the first bracket 21 and the second bracket 22 to linearly retract, so that the rotors of the first bracket 21 and the second bracket 22 are close to the aircraft shell 1, and the lower gear 32 drives the third bracket 23 and the fourth bracket 24. Linear contraction causes the rotors of the third bracket 23 and the fourth bracket 24 to approach the aircraft shell 1. When the position sensor monitors that the rotors have reached the preset closest position to the aircraft shell 1, the controller controls the drive motor 33 to stop. The drive motor 33 will continue to run for a certain period of time due to inertia and then stop. After the drive motor 33 stops, the positions of the first bracket 21, the second bracket 22, the third bracket 23 and the fourth bracket 24 are fixed, and the controller controls the electric lock 7 to unlock the guide column, completing the unlocking of the aircraft shell 1, so that the aircraft shell 1 can twist to avoid danger when it encounters a collision.However, in case the flying car may encounter a collision or scrape, the present invention also provides a land driving avoidance step: when the flying car is driving on the ground, if any pulley 4 on the first bracket 21, the second bracket 22, the third bracket 23 or the fourth bracket 24 senses external pressure, the pulley 4 transmits the pressure to the pulley shaft, and the pulley shaft further transmits the pressure to the pressure sensor on the pulley sleeve. When the pressure sensed by the pressure sensor exceeds the preset maximum pressure value, it indicates that the car may have been hit by an external collision. The pressure sensor transmits a signal to the controller, allowing the controller to control the drive motor 33 to drive the upper gear 31 and the lower gear 32 to rotate synchronously clockwise, so that the pulley 4 retracts a preset distance, and then the drive motor 33 stops and the flying car brakes to reduce the damage caused by the collision.

[0019] The beneficial effects of the present invention are:

[0020] The present invention discloses a flying car and a control method, belonging to the technical field of flying cars, comprising a car and a flying device; the flying device is disposed on the top of the car; the flying device comprises a flying device shell, a bracket, and a driving mechanism; the flying device shell is used to support the bracket; the bracket comprises a first bracket, a second bracket, a third bracket, and a fourth bracket, each having a rotor at one end; the driving mechanism is disposed within the flying device shell and is used to drive the first bracket, the second bracket, the third bracket, and the fourth bracket to move linearly in synchronization, thereby changing the distance between the rotor and the center of the flying device shell. The flying car and control method of the present invention have a simple retraction step, effectively converge the rotor toward the center of the car, provide good stability and safety when the car is driven on land, and are not susceptible to scratching or collision. The bracket is provided with protective measures to reduce damage caused by friction and collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the aircraft bracket and driving mechanism of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the pulley of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the annular track, torsion spring and electric lock of the present invention;

[0025] In the accompanying drawings: 1-aircraft shell, 2-bracket, 3-driving mechanism, 4-pulley, 5-annular track, 6-torsion spring, 7-electric lock, 21-first bracket, 22-second bracket, 23-third bracket, 24-fourth bracket, 31-upper driving wheel, 32-lower driving wheel, 33-driving motor. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the following embodiments.

[0027] Example 1:

[0028] See attached Figures 1 and 2 . A flying car, comprising a car and a flying device; the flying device is arranged on the top of the car; the flying device comprises an aircraft shell 1, a bracket 2 and a driving mechanism 3; the aircraft shell 1 is used to support the bracket 2; the bracket 2 comprises a first bracket 21, a second bracket 22, a third bracket 23 and a fourth bracket 24, each of which has a rotor at one end; the driving mechanism 3 is arranged inside the aircraft shell 1, and is used to drive the first bracket 21, the second bracket 22, the third bracket 23 and the fourth bracket 24 to move linearly in synchronization, thereby changing the distance between the rotor and the center of the aircraft shell 1. As can be seen from the above structure, the flying device is arranged at the top center of the car and is connected to the car body. The flying device comprises an aircraft shell 1, a bracket 2 and a driving mechanism 3. Among them, the aircraft shell 1 is used to support the first bracket 21, the second bracket 22, the third bracket 23 and the fourth bracket 24, and prevent foreign objects from entering the flying device. The four rotors are connected to the vehicle housing 1 via a first bracket 21, a second bracket 22, a third bracket 23, and a fourth bracket 24. The vehicle housing 1 is in turn connected to the vehicle. The rotors rotate to provide the vehicle with the lift it needs to fly, enabling flight. A drive mechanism 3 is located centrally within the vehicle housing 1 and drives the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 to perform synchronous linear movement, varying the distance between the rotors and the center of the vehicle housing 1. This allows for adjustment of the rotor position and the volume of the vehicle. This simple structure allows for easy control. Prior art typically uses telescopic or folding rods to retract or fold multirotor aircraft, further enhancing the center of gravity convergence function. However, the telescopic rod structure consists of a fixed portion and a movable portion. Even when the movable portion of the telescopic rod is retracted into the fixed portion or the folding rod is folded, there is a section that cannot be retracted. This limits the retraction distance of the rotors, preventing them from being very close to the center of the vehicle, resulting in poor convergence. Furthermore, uneven force distribution during retraction can cause the vehicle to shift to one side, leading to numerous drawbacks. However, the present invention, through the coordination of the bracket 2 and the drive mechanism 3, allows the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 to bring the heavier rotor portion very close to the center of the vehicle during retraction, without obstruction from the fixed portion, resulting in a better convergence effect. Furthermore, because the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 extend and retract simultaneously, the vehicle is less likely to jolt, shift, or overturn even when accelerating, braking, turning, climbing a slope, or encountering uneven road conditions. This maintains overall stability and enhances safety, making it more suitable for land-based driving. The flying car of the present invention has a simple structure, is easy to control, has a good rotor convergence effect, is not prone to bumping, deflecting or overturning, and has good driving stability.

[0029] Example 2:

[0030] See attached Figures 1 to 4 . A flying car, comprising a car and a flying device; the flying device is arranged on the top of the car; the flying device comprises an aircraft shell 1, a bracket 2 and a driving mechanism 3; the aircraft shell 1 is used to support the bracket 2; the bracket 2 comprises a first bracket 21, a second bracket 22, a third bracket 23 and a fourth bracket 24, each of which has a rotor at one end; the driving mechanism 3 is arranged inside the aircraft shell 1, and is used to drive the first bracket 21, the second bracket 22, the third bracket 23 and the fourth bracket 24 to move linearly in synchronization, thereby changing the distance between the rotor and the center of the aircraft shell 1. As can be seen from the above structure, the flying device is arranged at the top center of the car and is connected to the car body. The flying device comprises an aircraft shell 1, a bracket 2 and a driving mechanism 3. Among them, the aircraft shell 1 is used to support the first bracket 21, the second bracket 22, the third bracket 23 and the fourth bracket 24, and prevent foreign objects from entering the flying device. The four rotors are connected to the vehicle housing 1 via a first bracket 21, a second bracket 22, a third bracket 23, and a fourth bracket 24. The vehicle housing 1 is in turn connected to the vehicle. The rotors rotate to provide the vehicle with the lift it needs to fly, enabling flight. A drive mechanism 3 is located centrally within the vehicle housing 1 and drives the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 to perform synchronous linear movement, varying the distance between the rotors and the center of the vehicle housing 1. This allows for adjustment of the rotor position and the volume of the vehicle. This simple structure allows for easy control. Prior art typically uses telescopic or folding rods to retract or fold multirotor aircraft, further enhancing the center of gravity convergence function. However, the telescopic rod structure consists of a fixed portion and a movable portion. Even when the movable portion of the telescopic rod is retracted into the fixed portion or the folding rod is folded, there is a section that cannot be retracted. This limits the retraction distance of the rotors, preventing them from being very close to the center of the vehicle, resulting in poor convergence. Furthermore, uneven force distribution during retraction can cause the vehicle to shift to one side, leading to numerous drawbacks. However, the present invention, through the coordination of the bracket 2 and the drive mechanism 3, allows the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 to bring the heavier rotor portion very close to the center of the vehicle during retraction, without obstruction from the fixed portion, resulting in a better convergence effect. Furthermore, because the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 extend and retract simultaneously, the vehicle is less likely to jolt, shift, or overturn even when accelerating, braking, turning, climbing a slope, or encountering uneven road conditions. This maintains overall stability and enhances safety, making it more suitable for land-based driving. The flying car of the present invention has a simple structure, is easy to control, has a good rotor convergence effect, is not prone to bumping, deflecting or overturning, and has good driving stability.

[0031] The drive mechanism 3 includes an upper gear 31, a lower gear 32, and a drive motor 33. The inner sides of the first and second brackets 21, 22 are provided with a rack that meshes with the upper gear 31, and the first and second brackets 21, 22 are symmetrical about the center of the upper gear 31. The inner sides of the third and fourth brackets 23, 24 are provided with a rack that meshes with the lower gear 32, and the third and fourth brackets 23, 24 are symmetrical about the center of the lower gear 32. The drive motor 33 is used to drive the upper and lower gears 31, 32 to rotate synchronously. As can be seen from the above structure, the drive motor 33 is provided with a drive shaft and is connected to the upper and lower gears 31, 32 via the drive shaft to achieve synchronous rotation of the upper and lower gears 31, 32. The inner sides of the first and second brackets 21, 22 are provided with a rack that meshes with the upper gear 31, and the first and second brackets 21, 22 are symmetrical about the center of the upper gear 31. When the upper gear 31 rotates, the first and second brackets 21, 22 will synchronously perform linear movements of the same distance but in opposite directions. The inner sides of the third and fourth brackets 23 and 24 are equipped with racks that mesh with the lower gear 32. The third and fourth brackets 23 and 24 are symmetrical about the center of the lower gear 32. When the lower gear 32 rotates, the three brackets 23 and 24 undergo synchronous linear movement, moving the same distance but in opposite directions. When the drive motor 33 rotates clockwise, it drives the upper and lower gears 31 and 32 to rotate clockwise, thereby extending the first, second, third, and fourth brackets 21, 22, 23, and 24 away from the center of the aircraft housing 1. When the drive motor 33 rotates counterclockwise, it drives the upper and lower gears 31 and 32 to rotate counterclockwise, thereby retracting the first, second, third, and fourth brackets 21, 22, 23, and 24 toward the center of the aircraft housing 1. Because the first, second, third, and fourth brackets 21, 22, 23, and 24 extend and retract synchronously, the vehicle is prevented from unilateral deviation during the extension and retraction process, ensuring excellent driving stability and safety.

[0032] The other ends of the first, second, third, and fourth brackets 21, 22, 23, and 24 are equipped with pulley sleeves. A pulley shaft is mounted within the pulley sleeves. Eight pressure sensors are installed on the inner walls of the pulley sleeves. A pulley 4 is mounted on the pulley shaft. As can be seen from the above structure, while the vehicle is traveling on land, the first, second, third, and fourth brackets 21, 22, 23, and 24 of the flying device will retract. However, even after retraction, the flying device may still encounter friction or collisions due to factors such as the complex terrain or poor road conditions on which the flying vehicle is located, and the brackets may be unable to protect the rotors. Therefore, the present invention provides pulley sleeves at the other ends of the first, second, third, and fourth brackets 21, 22, 23, and 24. A pulley shaft is mounted within the pulley sleeves, and pulley 4 is connected to the pulley shaft. If the vehicle accidentally encounters an external collision, pulley 4 can first contact the external environment and slide to reduce friction, thereby protecting the rotors. The inner wall of the pulley sleeve is equipped with eight pressure sensors, evenly distributed throughout the sleeve. When pulley 4 is subjected to external pressure, it drives the attached pulley shaft to move. This displacement of the pulley shaft impacts the pressure sensors on the sleeve, which receive the pressure information. When the pressure sensed by the pressure sensors exceeds a preset maximum pressure, a signal is transmitted to the vehicle's controller. The controller then controls the drive motor 33 to rotate the upper and lower gears 31 and 32 synchronously clockwise, retracting pulley 4 by a preset distance to prevent further damage.

[0033] The pulley sleeve is also equipped with a position sensor; this position sensor is used to monitor the distance between the pulley sleeve and the aircraft housing 1. As can be seen from the above structure, the position sensor on the pulley sleeve can monitor the positions of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24, and preset the closest position and the farthest position from the aircraft housing 1, thereby limiting its extension and retraction range. When the first bracket 21 and the second bracket 22, or the third bracket 23 and the fourth bracket 24 reach the preset closest position or the farthest position from the aircraft housing 1, the position sensor transmits a signal to the controller, causing the controller to stop the drive motor 33, thereby preventing excessive extension and retraction from causing the rotor or pulley 4 to collide with the aircraft housing 1.

[0034] Guide rails are provided on the upper and lower sides of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24; eight guide openings are also provided on the sidewall of the aircraft housing 1; each of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 is adapted to engage with two guide openings. As can be seen from the above structure, the guide rails are provided on the upper and lower sides of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24, and are adapted to engage with two guide openings. This is so that the guide openings can secure and guide their positions, preventing the movement directions of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 from shifting during extension and retraction, thereby achieving a good guiding effect.

[0035] The rotors of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 are at the same height. As can be seen from the above structure, although the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 are at different heights, the connectors connecting the rotors at the ends of the first bracket 21, the second bracket 22, and the third bracket 23, and the fourth bracket 24 are at different heights, thereby achieving the effect of maintaining the same height for the four rotors. This ensures that when the rotors are in operation, the lift force exerted on each position of the vehicle is consistent, ensuring the vehicle's stable flight.

[0036] The top of the car is provided with a circular track 5 and two torsion springs 6; the aircraft housing 1 is cylindrical with a closed top; the bottom of the aircraft housing 1 is provided with eight guide posts that cooperate with the circular track; the two torsion springs 6 are used to provide torsional forces in opposite directions to the aircraft housing 1. As can be seen from the above structure, the car may encounter an accidental collision while driving on land. Once a collision occurs, the aircraft device is easily damaged, affecting the car's driving and causing economic losses. To reduce the damage to the aircraft device caused by this situation, the top of the car is further provided with a circular track 5 and two torsion springs 6, and the bottom of the aircraft housing 1 is provided with eight guide posts that cooperate with the circular track. When the aircraft device encounters a collision, the guide posts of the aircraft housing 1 can rotate along the circular track 5, driving the aircraft housing 1 to rotate, thereby changing the positions of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24, reducing the damage caused by the collision. There are two torsion springs 6, distributed on both sides of the aircraft shell 1, one end of which is connected to the aircraft shell 1 and the other end is connected to the top of the car, which is used to provide torque in the opposite direction when the aircraft shell 1 rotates. Under normal land driving conditions, it can limit the aircraft shell 1 from rotating, and the fixing effect is good; when the aircraft is hit, although the aircraft shell 1 has rotated along the circular track 5, under the action of the two torsion springs 6, the rotation amplitude of the entire aircraft can be limited, and the position of the aircraft can be restored after the external force is removed, and the buffering effect is good.

[0037] An electric lock 7 is secured to the top of the vehicle; it is used to lock or unlock one of the guide posts. As can be seen from the above structure, when the vehicle is ready to fly, the controller controls the electric lock 7 to lock one of the guide posts, thereby securing the flying device and preventing displacement of the flying device housing 1, effectively securing the device. When the vehicle is ready to drive on land, the controller controls the electric lock 7 to unlock the guide posts, thereby unlocking the flying device and preventing it from twisting and damaging itself in the event of a collision.

[0038] The flying car also includes a controller electrically connected to the drive motor 33, the pressure sensor, the position sensor, and the electric lock 7. As can be seen from the above structure, the controller is electrically connected to the drive motor 33 to control the direction and rotation of the drive motor 33. The controller is electrically connected to the pressure sensor to receive pressure signals from the pressure sensor, control the retraction of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24, and brake the flying car to avoid external collision damage. The controller is electrically connected to the position sensor to control the retracted and extended positions of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24. The controller is electrically connected to the electric lock 7 to control the locked or unlocked state of the electric lock 7.

[0039] Example 3:

[0040] See attached Figures 1 to 4. A flying car, comprising a car and a flying device; the flying device is arranged on the top of the car; the flying device comprises an aircraft shell 1, a bracket 2 and a driving mechanism 3; the aircraft shell 1 is used to support the bracket 2; the bracket 2 comprises a first bracket 21, a second bracket 22, a third bracket 23 and a fourth bracket 24, each of which has a rotor at one end; the driving mechanism 3 is arranged inside the aircraft shell 1, and is used to drive the first bracket 21, the second bracket 22, the third bracket 23 and the fourth bracket 24 to move linearly in synchronization, thereby changing the distance between the rotor and the center of the aircraft shell 1. As can be seen from the above structure, the flying device is arranged at the top center of the car and is connected to the car body. The flying device comprises an aircraft shell 1, a bracket 2 and a driving mechanism 3. Among them, the aircraft shell 1 is used to support the first bracket 21, the second bracket 22, the third bracket 23 and the fourth bracket 24, and prevent foreign objects from entering the flying device. The four rotors are connected to the vehicle housing 1 via a first bracket 21, a second bracket 22, a third bracket 23, and a fourth bracket 24. The vehicle housing 1 is in turn connected to the vehicle. The rotors rotate to provide the vehicle with the lift it needs to fly, enabling flight. A drive mechanism 3 is located centrally within the vehicle housing 1 and drives the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 to perform synchronous linear movement, varying the distance between the rotors and the center of the vehicle housing 1. This allows for adjustment of the rotor position and the volume of the vehicle. This simple structure allows for easy control. Prior art typically uses telescopic or folding rods to retract or fold multirotor aircraft, further enhancing the center of gravity convergence function. However, the telescopic rod structure consists of a fixed portion and a movable portion. Even when the movable portion of the telescopic rod is retracted into the fixed portion or the folding rod is folded, there is a section that cannot be retracted. This limits the retraction distance of the rotors, preventing them from being very close to the center of the vehicle, resulting in poor convergence. Furthermore, uneven force distribution during retraction can cause the vehicle to shift to one side, leading to numerous drawbacks. However, the present invention, through the coordination of the bracket 2 and the drive mechanism 3, allows the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 to bring the heavier rotor portion very close to the center of the vehicle during retraction, without obstruction from the fixed portion, resulting in a better convergence effect. Furthermore, because the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 extend and retract simultaneously, the vehicle is less likely to jolt, shift, or overturn even when accelerating, braking, turning, climbing a slope, or encountering uneven road conditions. This maintains overall stability and enhances safety, making it more suitable for land-based driving. The flying car of the present invention has a simple structure, is easy to control, has a good rotor convergence effect, is not prone to bumping, deflecting or overturning, and has good driving stability.

[0041] The drive mechanism 3 includes an upper gear 31, a lower gear 32, and a drive motor 33. The inner sides of the first and second brackets 21, 22 are provided with a rack that meshes with the upper gear 31, and the first and second brackets 21, 22 are symmetrical about the center of the upper gear 31. The inner sides of the third and fourth brackets 23, 24 are provided with a rack that meshes with the lower gear 32, and the third and fourth brackets 23, 24 are symmetrical about the center of the lower gear 32. The drive motor 33 is used to drive the upper and lower gears 31, 32 to rotate synchronously. As can be seen from the above structure, the drive motor 33 is provided with a drive shaft and is connected to the upper and lower gears 31, 32 via the drive shaft to achieve synchronous rotation of the upper and lower gears 31, 32. The inner sides of the first and second brackets 21, 22 are provided with a rack that meshes with the upper gear 31, and the first and second brackets 21, 22 are symmetrical about the center of the upper gear 31. When the upper gear 31 rotates, the first and second brackets 21, 22 will synchronously perform linear movements of the same distance but in opposite directions. The inner sides of the third and fourth brackets 23 and 24 are equipped with racks that mesh with the lower gear 32. The third and fourth brackets 23 and 24 are symmetrical about the center of the lower gear 32. When the lower gear 32 rotates, the three brackets 23 and 24 undergo synchronous linear movement, moving the same distance but in opposite directions. When the drive motor 33 rotates clockwise, it drives the upper and lower gears 31 and 32 to rotate clockwise, thereby extending the first, second, third, and fourth brackets 21, 22, 23, and 24 away from the center of the aircraft housing 1. When the drive motor 33 rotates counterclockwise, it drives the upper and lower gears 31 and 32 to rotate counterclockwise, thereby retracting the first, second, third, and fourth brackets 21, 22, 23, and 24 toward the center of the aircraft housing 1. Because the first, second, third, and fourth brackets 21, 22, 23, and 24 extend and retract synchronously, the vehicle is prevented from unilateral deviation during the extension and retraction process, ensuring excellent driving stability and safety.

[0042] The other ends of the first, second, third, and fourth brackets 21, 22, 23, and 24 are equipped with pulley sleeves. A pulley shaft is mounted within the pulley sleeves. Eight pressure sensors are installed on the inner walls of the pulley sleeves. A pulley 4 is mounted on the pulley shaft. As can be seen from the above structure, while the vehicle is traveling on land, the first, second, third, and fourth brackets 21, 22, 23, and 24 of the flying device will retract. However, even after retraction, the flying device may still encounter friction or collisions due to factors such as the complex terrain or poor road conditions on which the flying vehicle is located, and the brackets may be unable to protect the rotors. Therefore, the present invention provides pulley sleeves at the other ends of the first, second, third, and fourth brackets 21, 22, 23, and 24. A pulley shaft is mounted within the pulley sleeves, and pulley 4 is connected to the pulley shaft. If the vehicle accidentally encounters an external collision, pulley 4 can first contact the external environment and slide to reduce friction, thereby protecting the rotors. The inner wall of the pulley sleeve is equipped with eight pressure sensors, evenly distributed throughout the sleeve. When pulley 4 is subjected to external pressure, it drives the attached pulley shaft to move. This displacement of the pulley shaft impacts the pressure sensors on the sleeve, which receive the pressure information. When the pressure sensed by the pressure sensors exceeds a preset maximum pressure, a signal is transmitted to the vehicle's controller. The controller then controls the drive motor 33 to rotate the upper and lower gears 31 and 32 synchronously clockwise, retracting pulley 4 by a preset distance to prevent further damage.

[0043] The pulley sleeve is also equipped with a position sensor; this position sensor is used to monitor the distance between the pulley sleeve and the aircraft housing 1. As can be seen from the above structure, the position sensor on the pulley sleeve can monitor the positions of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24, and preset the closest position and the farthest position from the aircraft housing 1, thereby limiting its extension and retraction range. When the first bracket 21 and the second bracket 22, or the third bracket 23 and the fourth bracket 24 reach the preset closest position or the farthest position from the aircraft housing 1, the position sensor transmits a signal to the controller, causing the controller to stop the drive motor 33, thereby preventing excessive extension and retraction from causing the rotor or pulley 4 to collide with the aircraft housing 1.

[0044] Guide rails are provided on the upper and lower sides of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24; eight guide openings are also provided on the sidewall of the aircraft housing 1; each of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 is adapted to engage with two guide openings. As can be seen from the above structure, the guide rails are provided on the upper and lower sides of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24, and are adapted to engage with two guide openings. This is so that the guide openings can secure and guide their positions, preventing the movement directions of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 from shifting during extension and retraction, thereby achieving a good guiding effect.

[0045] The rotors of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 are at the same height. As can be seen from the above structure, although the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 are at different heights, the connectors connecting the rotors at the ends of the first bracket 21, the second bracket 22, and the third bracket 23, and the fourth bracket 24 are at different heights, thereby achieving the effect of maintaining the same height for the four rotors. This ensures that when the rotors are in operation, the lift force exerted on each position of the vehicle is consistent, ensuring the vehicle's stable flight.

[0046] The top of the car is provided with a circular track 5 and two torsion springs 6; the aircraft housing 1 is cylindrical with a closed top; the bottom of the aircraft housing 1 is provided with eight guide posts that cooperate with the circular track; the two torsion springs 6 are used to provide torsional forces in opposite directions to the aircraft housing 1. As can be seen from the above structure, the car may encounter an accidental collision while driving on land. Once a collision occurs, the aircraft device is easily damaged, affecting the car's driving and causing economic losses. To reduce the damage to the aircraft device caused by this situation, the top of the car is further provided with a circular track 5 and two torsion springs 6, and the bottom of the aircraft housing 1 is provided with eight guide posts that cooperate with the circular track. When the aircraft device encounters a collision, the guide posts of the aircraft housing 1 can rotate along the circular track 5, driving the aircraft housing 1 to rotate, thereby changing the positions of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24, reducing the damage caused by the collision. There are two torsion springs 6, distributed on both sides of the aircraft shell 1, one end of which is connected to the aircraft shell 1 and the other end is connected to the top of the car, which is used to provide torque in the opposite direction when the aircraft shell 1 rotates. Under normal land driving conditions, it can limit the aircraft shell 1 from rotating, and the fixing effect is good; when the aircraft is hit, although the aircraft shell 1 has rotated along the circular track 5, under the action of the two torsion springs 6, the rotation amplitude of the entire aircraft can be limited, and the position of the aircraft can be restored after the external force is removed, and the buffering effect is good.

[0047] An electric lock 7 is secured to the top of the vehicle; it is used to lock or unlock one of the guide posts. As can be seen from the above structure, when the vehicle is ready to fly, the controller controls the electric lock 7 to lock one of the guide posts, thereby securing the flying device and preventing displacement of the flying device housing 1, effectively securing the device. When the vehicle is ready to drive on land, the controller controls the electric lock 7 to unlock the guide posts, thereby unlocking the flying device and preventing it from twisting and damaging itself in the event of a collision.

[0048] The flying car also includes a controller electrically connected to the drive motor 33, the pressure sensor, the position sensor, and the electric lock 7. As can be seen from the above structure, the controller is electrically connected to the drive motor 33 to control the direction and rotation of the drive motor 33. The controller is electrically connected to the pressure sensor to receive pressure signals from the pressure sensor, control the retraction of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24, and brake the flying car to avoid external collision damage. The controller is electrically connected to the position sensor to control the retracted and extended positions of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24. The controller is electrically connected to the electric lock 7 to control the locked or unlocked state of the electric lock 7.

[0049] A flying car according to the aforementioned content includes an air flight preparation step, a land driving preparation step, and a land driving risk avoidance step;

[0050] The flight preparation steps are as follows: the controller controls the drive motor 33 to drive the upper gear 31 and the lower gear 32 to rotate synchronously clockwise; the upper gear 31 drives the first bracket 21 and the second bracket 22 to move linearly, so that the rotors of the first bracket 21 and the second bracket 22 are away from the aircraft housing 1; the lower gear 32 drives the rotors of the third bracket 23 and the fourth bracket 24 to move away from the aircraft housing 1; when the position sensor detects that the rotors have reached a preset maximum position from the aircraft housing 1, the controller controls the drive motor 33 to stop; and the controller controls the electric lock 7 to lock the guide column.

[0051] The land travel preparation steps are specifically as follows: the controller controls the drive motor 33 to drive the upper gear 31 and the lower gear 32 to rotate synchronously counterclockwise; the upper gear 31 drives the first bracket 21 and the second bracket 22 to move linearly, so that the rotors of the first bracket 21 and the second bracket 22 approach the aircraft housing 1; the lower gear 32 drives the rotors of the third bracket 23 and the fourth bracket 24 approach the aircraft housing 1; when the position sensor detects that the rotors have reached a preset closest position to the aircraft housing 1, the controller controls the drive motor 33 to stop; and the controller controls the electric lock 7 to unlock the guide column.

[0052] The land driving risk avoidance steps are specifically as follows: after the land driving preparation step, the flying car starts to drive on the ground. When the pressure sensed by the pressure sensor exceeds the preset maximum pressure value, the controller controls the drive motor 33 to drive the upper gear 31 and the lower gear 32 to rotate synchronously clockwise, so that the pulley 4 retracts a preset distance, and then the drive motor 33 stops, and the flying car brakes.

[0053] Flying cars have two modes of travel: flying in the air and driving on land. Before the vehicle enters the airborne state, the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 need to be extended, and then the rotors need to provide sufficient lift for the vehicle to take off and maintain flight. Therefore, an airborne flight preparation step is required: the controller controls the drive motor 33 to drive the upper gear 31 and the lower gear 32 to rotate synchronously clockwise. The upper gear 31 further drives the first bracket 21 and the second bracket 22 to linearly extend, so that the rotors of the first bracket 21 and the second bracket 22 are separated from the aircraft shell 1. The lower gear 32 drives the third bracket 23 and the fourth bracket 24 to linearly extend, so that the rotors of the third bracket 23 and the fourth bracket 24 are separated from the aircraft shell 1. When the position sensor detects that the rotors have reached the preset maximum position from the aircraft shell 1, the controller controls the drive motor 33 to stop. The drive motor 33 will continue to operate for a certain period of time due to inertia and then stop. After the drive motor 33 stops, the positions of the first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 are fixed, and the controller controls the electric lock 7 to lock the guide column, completing the locking of the aircraft shell 1. Then the rotors start working, and the lift generated by the rotation of the rotors allows the car to take off. When the car enters the land driving state, the first bracket 21, the second bracket 22, the third bracket 23 and the fourth bracket 24 need to be retracted to reduce the size of the flying device, so as to facilitate the subsequent driving of the car on land. Therefore, it is necessary to implement the land driving preparation steps. The controller controls the drive motor 33 to drive the upper gear 31 and the lower gear 32 to rotate synchronously counterclockwise, so that the upper gear 31 drives the first bracket 21 and the second bracket 22 to linearly retract, so that the rotors of the first bracket 21 and the second bracket 22 are close to the aircraft shell 1, and the lower gear 32 drives the third bracket 23 and the fourth bracket 24. Linear contraction causes the rotors of the third bracket 23 and the fourth bracket 24 to approach the aircraft shell 1. When the position sensor monitors that the rotors have reached the preset closest position to the aircraft shell 1, the controller controls the drive motor 33 to stop. The drive motor 33 will continue to run for a certain period of time due to inertia and then stop. After the drive motor 33 stops, the positions of the first bracket 21, the second bracket 22, the third bracket 23 and the fourth bracket 24 are fixed, and the controller controls the electric lock 7 to unlock the guide column, completing the unlocking of the aircraft shell 1, so that the aircraft shell 1 can twist to avoid danger when it encounters a collision.However, in case the flying car may encounter a collision or scrape, the present invention also provides a land driving avoidance step: when the flying car is driving on the ground, if any pulley 4 on the first bracket 21, the second bracket 22, the third bracket 23 or the fourth bracket 24 senses external pressure, the pulley 4 transmits the pressure to the pulley shaft, and the pulley shaft further transmits the pressure to the pressure sensor on the pulley sleeve. When the pressure sensed by the pressure sensor exceeds the preset maximum pressure value, it indicates that the car may have been hit by an external collision. The pressure sensor transmits a signal to the controller, allowing the controller to control the drive motor 33 to drive the upper gear 31 and the lower gear 32 to rotate synchronously clockwise, so that the pulley 4 retracts a preset distance, and then the drive motor 33 stops and the flying car brakes to reduce the damage caused by the collision.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for controlling a flying car, characterized by: A flying car is used, comprising a car and a flying device; the flying device is arranged on the top of the car; the flying device comprises an aircraft shell (1), a bracket (2) and a driving mechanism (3); the aircraft shell (1) is used to support the bracket (2); the bracket (2) comprises a first bracket (21) with a rotor provided at one end, a second bracket (22), a third bracket (23) and a fourth bracket (24); the driving mechanism (3) is arranged inside the aircraft shell (1) and is used to drive the first bracket (21), the second bracket (22), the third bracket (23) and the fourth bracket (24) to move linearly in synchronization to change the distance between the rotor and the center of the aircraft shell (1); the driving mechanism (3) comprises an upper gear (31), a lower gear (32) and a driving motor (33); the inner side surfaces of the first bracket (21) and the second bracket (22) are provided with a rack meshing with the upper gear (31), and the first bracket (21) and the second bracket (22) are symmetrical about the center of the upper gear (31); the third bracket (23) and the fourth bracket (24) are arranged on the inner side surfaces of the first bracket (21) and the second bracket (22) The inner side is provided with a rack meshing with the lower gear (32), and the third bracket (23) and the fourth bracket (24) are symmetrical about the center of the lower gear (32); the driving motor (33) is used to drive the upper gear (31) and the lower gear (32) to rotate synchronously; the other ends of the first bracket (21), the second bracket (22), the third bracket (23) and the fourth bracket (24) are provided with a pulley sleeve; a pulley shaft is sleeved in the pulley sleeve; eight pressure sensors are provided on the inner wall of the pulley sleeve; a pulley (4) is provided on the pulley shaft; The pulley sleeve is also provided with a position sensor; the position sensor is used to monitor the distance between the pulley sleeve and the aircraft shell (1); a circular track (5) and two torsion springs (6) are provided on the top of the car; the aircraft shell (1) is a cylindrical shape with a closed top; eight guide columns are provided at the bottom of the aircraft shell (1) and cooperate with the circular track; the two torsion springs (6) are used to provide torsion in opposite directions to the aircraft shell (1); an electric lock (7) is fixed on the top of the car; the electric lock is used to lock or unlock one of the guide columns; It also includes a controller; the controller is electrically connected to the drive motor (33), the pressure sensor, the position sensor, and the electric lock (7); The control method of the flying car includes an air flight preparation step, a land driving preparation step, and a land driving risk avoidance step; The flight preparation steps are specifically as follows: the controller controls the driving motor (33) to drive the upper gear (31) and the lower gear (32) to rotate synchronously clockwise; the upper gear (31) drives the first bracket (21) and the second bracket (22) to move linearly, so that the rotors of the first bracket (21) and the second bracket (22) are away from the aircraft housing (1); the lower gear (32) drives the rotors of the third bracket (23) and the fourth bracket (24) to be away from the aircraft housing (1); when the position sensor monitors that the rotor reaches the preset farthest position from the aircraft housing (1), the controller controls the driving motor (33) to stop; and the controller controls the electric lock (7) to lock the guide column; The land travel preparation steps are specifically as follows: the controller controls the drive motor (33) to drive the upper gear (31) and the lower gear (32) to rotate synchronously counterclockwise; the upper gear (31) drives the first bracket (21) and the second bracket (22) to move linearly, so that the rotors of the first bracket (21) and the second bracket (22) are close to the aircraft shell (1); the lower gear (32) drives the rotors of the third bracket (23) and the fourth bracket (24) to be close to the aircraft shell (1); when the position sensor monitors that the rotor reaches the preset closest position to the aircraft shell (1), the controller controls the drive motor (33) to stop; and the controller controls the electric lock (7) to unlock the guide column; The land travel risk avoidance step is specifically as follows: after the land travel preparation step, the flying car starts to travel on the ground, and when the pressure sensed by the pressure sensor exceeds a preset maximum pressure value, the controller controls the drive motor (33) to drive the upper gear (31) and the lower gear (32) to rotate synchronously clockwise, so that the pulley (4) retracts a preset distance, and then the drive motor (33) stops, and the flying car brakes.

2. The method for controlling a flying car according to claim 1, wherein: The upper and lower sides of the first bracket (21), the second bracket (22), the third bracket (23) and the fourth bracket (24) are all provided with guide rails; the side wall of the aircraft shell (1) is also provided with eight guide openings; the first bracket (21), the second bracket (22), the third bracket (23) and the fourth bracket (24) are respectively equipped with two guide openings.

3. The flying car control method according to claim 2, characterized in that: The rotor heights of the first bracket (21) and the second bracket (22), and the third bracket (23) and the fourth bracket (24) are consistent.

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