Paddle driving assembly and vehicle

Abstract

The embodiment of the invention provides a paddle driving assembly and a vehicle, the paddle driving assembly comprises a paddle assembly and a driving assembly, the paddle assembly comprises a driving shaft, a first paddle and a second paddle, the first paddle is arranged on the driving shaft, and the second paddle is rotatably arranged on the driving shaft around the central axis of the driving shaft; the paddle assembly has an unfolded state and a folded state, in the unfolded state, the first paddle and the second paddle are arranged at intervals in the circumferential direction of the driving shaft, in the folded state, the second paddle and the first paddle are arranged in a stacked mode, and the driving assembly is used for driving the paddle assembly to be switched between the unfolded state and the folded state; and the driving assembly is used for driving the paddle assembly to rotate in the unfolded state. According to the paddle driving assembly, the driving force of the paddle assembly in the unfolded state is guaranteed, and meanwhile, the space occupied by the paddle assembly in the folded state can be reduced, so that the space needed for storing the paddle assembly can be reduced, and the storage difficulty of the paddle assembly is lowered.

Description

Technical Field

[0001] This invention relates to the field of drive assembly technology, and in particular to a propeller drive assembly and a vehicle. Background Technology

[0002] With the continuous development of the automotive industry, vehicles are no longer limited to driving on land. Amphibious vehicles, for example, can travel on both land and water, greatly enhancing their all-terrain capabilities and driving pleasure. Amphibious vehicles require a propulsion system for water travel, such as a propulsion wheel, which typically needs to be retracted when the vehicle is traveling on land. However, the propulsion systems used in these technologies are space-consuming and inconvenient to store. Therefore, improvements are needed. Summary of the Invention

[0003] This application provides a propeller drive assembly and a vehicle, aiming to improve the problem of inconvenient storage of drive devices for water travel.

[0004] The first aspect of this application discloses a blade drive assembly, comprising: a blade assembly including a drive shaft, a first blade, and a second blade, wherein the first blade is disposed on the drive shaft, and the second blade is rotatably disposed on the drive shaft about the central axis of the drive shaft; the blade assembly has an deployed state and a retracted state; in the deployed state, the first blade and the second blade are arranged circumferentially spaced along the drive shaft; and in the retracted state, the second blade and the first blade are stacked together; and a drive assembly is tractively connected to the drive shaft and the second blade, the drive assembly being used to drive the blade assembly to switch between the deployed state and the retracted state, and to drive the blade assembly to rotate in the deployed state.

[0005] In the above technical solution, in the deployed state, the first blade and the second blade are arranged circumferentially along the drive shaft, and in the retracted state, the second blade and the first blade are stacked. This ensures the driving force of the blade assembly in the deployed state while reducing the space occupied by the blade assembly in the retracted state, thereby reducing the space required for storing the blade assembly and reducing the difficulty of storing the blade assembly.

[0006] In some embodiments, both the first blade and the second blade are plate-shaped and parallel to the axial direction of the drive shaft; In the stowed state, both the first blade and the second blade are placed horizontally; and / or, in the stowed state, the first blade and the second blade are stacked circumferentially along the drive shaft.

[0007] In some embodiments, the blade drive assembly further includes a connecting shaft, the second blade is disposed on the connecting shaft, the connecting shaft passes through the drive shaft, the connecting shaft has an unlocked state and a locked state, in the unlocked state the connecting shaft is rotatable relative to the drive shaft so that the blade assembly can switch between the deployed state and the retracted state, in the locked state the connecting shaft is fixed relative to the drive shaft.

[0008] In some embodiments, the drive assembly includes a first drive unit and a second drive unit. The first drive unit is connected to the connecting shaft and is used to drive the connecting shaft to switch between the unlocked state and the locked state. The second drive unit is connected to the drive shaft and is used to drive the drive shaft to rotate. When the connecting shaft is in the unlocked state, the second drive unit drives the blade assembly to switch between the deployed state and the retracted state. When the connecting shaft is in the locked state and the blade assembly is in the deployed state, the second drive unit drives the drive shaft and the connecting shaft to rotate synchronously.

[0009] In some embodiments, the blade drive assembly further includes: a drive shaft and a locking seat, wherein the drive shaft is slidable relative to the drive shaft along the axial direction and rotates synchronously with the drive shaft, a second drive unit is used to drive the drive shaft to rotate, a connecting shaft moves synchronously with the drive shaft along the axial direction of the drive shaft, the locking seat is located on the side of the drive shaft opposite to the first blade, the drive shaft is rotatable relative to the locking seat, and the connecting shaft also has a fixed state. The first drive unit is used to drive the connecting shaft to move along the axial direction of the drive shaft to switch between the fixed state, the unlocked state, and the locked state; wherein, in the fixed state, the connecting shaft and the drive shaft are locked with the locking seat to restrict the rotation of the blade assembly; in the unlocked state, the connecting shaft is rotatable relative to the drive shaft and the locking seat, and the drive shaft is rotatable relative to the locking seat; in the locked state, the connecting shaft and the drive shaft are rotatable relative to the locking seat, and the connecting shaft is locked with the drive shaft and rotates synchronously.

[0010] In some embodiments, the blade drive assembly has an operating state and a retracted state. In the operating state, the connecting shaft is locked and the first blade and the second blade are deployed. In the retracted state, the connecting shaft is fixed and the first blade and the second blade are retracted.

[0011] In some embodiments, the connecting shaft gradually approaches the locking seat when it moves from the locked state to the unlocked state and from the unlocked state to the fixed state.

[0012] In some embodiments, the locking seat has a first mating hole, the transmission shaft has a second mating hole, and both the inner circumferential surfaces of the first and second mating holes are provided with axially extending limiting grooves. The drive shaft passes through the second mating hole, and a first rib is formed on the outer circumferential surface of the drive shaft. One end of the connecting shaft opposite to the second blade extends out of the drive shaft to form an extension, and a second rib is formed on the outer circumferential surface of the extension. The limiting groove of the first mating hole includes a first limiting groove, and the limiting groove of the second mating hole includes second and third limiting grooves arranged circumferentially at intervals. In the fixed state, a portion of the first rib is located within the first limiting groove and a portion within the second limiting groove, while the second rib is located outside the third limiting groove and at least partially within the first limiting groove. In the unlocked state, the first rib is located outside the first limiting groove and at least partially within the second limiting groove. The second rib is located outside the first limiting groove and outside the third limiting groove; in the locked state, at least a portion of the first rib is located inside the second limiting groove, and at least a portion of the second rib is located inside the third limiting groove; or, the limiting groove of the first mating hole includes a fourth limiting groove and a fifth limiting groove arranged circumferentially, and the limiting groove of the second mating hole includes a sixth limiting groove; in the fixed state, a portion of the first rib is located inside the fourth limiting groove and a portion is located inside the sixth limiting groove, and the second rib is located outside the sixth limiting groove and at least a portion is located inside the fifth limiting groove; in the unlocked state, the first rib is located outside the fourth limiting groove and at least a portion is located inside the sixth limiting groove, and the second rib is located outside the fifth limiting groove and outside the sixth limiting groove; in the locked state, at least a portion of the first rib is located inside the sixth limiting groove, and at least a portion of the second rib is located inside the sixth limiting groove.

[0013] In some embodiments, the drive shaft forms an axially penetrating mounting cavity, the connecting shaft passes through the mounting cavity, and the outer peripheral wall of the mounting cavity at the end away from the locking seat forms a radially penetrating clearance notch along the drive shaft. The second blade passes through the clearance notch. Along the axial direction of the drive shaft, the end of the clearance notch away from the locking seat extends to the end face of the drive shaft away from the locking seat, forming a mounting port. The first blade is adapted to be inserted into the clearance notch through the mounting port. A limiting baffle is provided on the end face of the drive shaft away from the locking seat, and the limiting baffle is used to close the mounting port.

[0014] In some embodiments, the blade assembly has two sets symmetrically distributed on opposite sides of the first drive unit. The first drive unit is connected to the connecting shaft of the two sets of blade assemblies. The first drive unit is used to drive the two sets of blade assemblies to move closer to or further away from each other.

[0015] In some embodiments, the first drive unit includes a first drive motor, a first transmission gear, a first rack, and a second rack. The first transmission gear is disposed on the output shaft of the first drive motor and meshes with the first rack and the second rack. The first rack and the second rack are located on opposite sides of the first transmission gear along a first direction, which is perpendicular to the axial direction of the drive shaft. The rotation axis of the first transmission gear extends along a second direction, which is perpendicular to both the first direction and the axial direction of the drive shaft. When the first transmission gear rotates, the first rack and the second rack move in opposite directions along the circumference of the drive shaft. The connecting shafts on both sides are rotatably connected to the first rack and the second rack, respectively.

[0016] In some embodiments, there are two second drive units, and the two second drive units are respectively connected to two sets of the blade assemblies. The second drive units are used to drive the corresponding blade assemblies to rotate in the deployed state.

[0017] In some embodiments, the blade drive assembly has operating states, including a first mode, a second mode, a third mode, a fourth mode, and a fifth mode; wherein, in the first mode, the drive shafts of both sets of blade assemblies rotate clockwise and at the same speed; in the second mode, the drive shafts of both sets of blade assemblies rotate counterclockwise and at the same speed; in the third mode, the drive shafts of both sets of blade assemblies rotate clockwise and at different speeds; in the fourth mode, the drive shafts of both sets of blade assemblies rotate counterclockwise and at different speeds; and in the fifth mode, the drive shafts of one set of blade assemblies rotate clockwise, the drive shafts of the other set of blade assemblies rotate counterclockwise, and the drive shafts of both sets of blade assemblies rotate at the same speed.

[0018] In some embodiments, in the deployed state, the first blade is perpendicular to the second blade.

[0019] In some embodiments, the first blade includes two first blades, which are centrally symmetrically distributed on the outer peripheral surface of the drive shaft relative to the drive shaft. The second blade includes two second blades, which are centrally symmetrically distributed on the outer peripheral surface of the connecting shaft relative to the drive shaft. Two clearance notches are formed on the outer peripheral wall of the drive shaft to avoid the movement of the two second blades, and the central angle corresponding to the clearance notches is ninety degrees.

[0020] A second aspect of this application provides a vehicle comprising: a frame; and a propeller drive assembly as described in the first aspect embodiment, the propeller drive assembly being disposed on the frame.

[0021] In the above technical solution, in the deployed state, the first blade and the second blade are arranged circumferentially along the drive shaft, and in the retracted state, the second blade and the first blade are stacked. This ensures the driving force of the blade assembly in the deployed state while reducing the space occupied by the blade assembly in the retracted state, thereby reducing the space required for storing the blade assembly and reducing the difficulty of storing the blade assembly. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a blade drive assembly provided in an embodiment of this application; Figure 2 yes Figure 1 Enlarged view of region A in the middle; Figure 3 yes Figure 1 Enlarged view of region B in the middle; Figure 4 yes Figure 1 Enlarged view of region C in the middle; Figure 5 This is a schematic diagram of the blade assembly of a blade drive assembly provided in an embodiment of this application; Figure 6 yes Figure 5 Enlarged view of region D in the middle; Figure 7 This is a schematic diagram of the transmission shaft of a blade drive assembly provided in one embodiment of this application along the axial direction; Figure 8 This is a schematic diagram of the locking seat of the blade drive assembly provided in one embodiment of this application along the axial direction; Figure 9 This is a schematic diagram of the connecting shaft of the propeller drive assembly provided in an embodiment of this application switching from a fixed state to an unlocked state; Figure 10 This is a schematic diagram of the blade drive assembly provided in an embodiment of the present application, showing the blade assembly switching from a retracted state to an extended state in an unlocked state; Figure 11This is a schematic diagram of the connecting shaft of the propeller drive assembly provided in an embodiment of this application switching from an unlocked state to a locked state; Figure 12 This is a schematic diagram of the rotation direction of the blade assembly during forward movement of a blade drive assembly provided in an embodiment of this application. Figure 13 This is a schematic diagram of the rotation direction of the blade assembly when the blade drive assembly provided in one embodiment of this application is reversing. Figure 14 This is a schematic diagram of the rotation direction of the blade assembly when the blade drive assembly provided in one embodiment of this application turns around.

[0023] Explanation of reference numerals in the attached figures: 100. Propeller drive assembly; 1. Blade assembly; 11. Drive shaft; 111. First rib; 112. Clearance notch; 113. Mounting cavity; 114. Mounting port; 12. First blade; 121. First blade; 13. Second blade; 131. Second blade; 14. Connecting shaft; 141. Second rib; 15. Limiting baffle; 2. Drive assembly; 21. First drive unit; 211. First drive motor; 212. First transmission gear; 213. First rack; 214. Second rack; 22. Second drive unit; 221. Second drive motor; 222. Second transmission gear; 223. Third transmission gear; 3. Transmission shaft; 31. Second mating hole; 32. Second limiting groove; 33. Third limiting groove; 4. Locking seat; 41. First mating hole; 42. First rotation limit groove. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this invention.

[0027] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0028] In the description of this invention, "a plurality of" means two or more.

[0029] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0030] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0031] The propeller drive assembly 100 according to a first aspect of the present invention will now be described with reference to the accompanying drawings.

[0032] like Figures 1 to 3 As shown, a blade drive assembly 100 according to a first aspect embodiment of the present invention includes: a blade assembly 1 and a drive assembly 2. The blade assembly 1 includes a drive shaft 11, a first blade 12 and a second blade 13. The first blade 12 is disposed on the drive shaft 11, and the second blade 13 is rotatably disposed on the drive shaft 11 around the central axis of the drive shaft 11. The blade assembly 1 has an extended state and a retracted state. In the extended state, the first blade 12 and the second blade 13 are arranged at circumferential intervals along the drive shaft 11. In the retracted state, the second blade 13 and the first blade 12 are stacked together. The drive assembly 2 is drively connected to the drive shaft 11 and the second blade 13. The drive assembly 2 is used to drive the blade assembly 1 to switch between the extended state and the retracted state, and is used to drive the blade assembly 1 to rotate in the extended state.

[0033] It should be noted that the first blade 12 is fixed on the drive shaft 11, that is, the first blade 12 rotates synchronously with the drive shaft 11, while the second blade 13 is connected to the drive shaft 11 but still maintains a certain degree of freedom of movement relative to the drive shaft 11. Specifically, the second blade 13 can rotate relative to the drive shaft 11.

[0034] In other words, when the propeller assembly 1 needs to be driven, such as when the vehicle is driven by the propeller drive assembly 100 to travel on the water, the propeller assembly 1 can be switched to the deployed state by the drive assembly 2 and rotated by the drive assembly 2. At this time, the first blade 12 and the second blade 13 are arranged circumferentially along the drive shaft 11, which can increase the paddling position on the propeller assembly 1, thereby increasing the propulsion speed of the propeller drive assembly 100. When the propeller assembly 1 does not need to be driven, such as when the vehicle is traveling on the ground, the propeller assembly 1 can be switched to the retracted state by the drive assembly 2. At this time, since the second blade 13 and the first blade 12 are stacked, the space occupied by the retracted propeller assembly 1 is reduced compared to the deployed state, thereby reducing the space required for retracting the propeller assembly 1 and reducing the difficulty of retracting the propeller assembly 1, while also reducing wind resistance. Therefore, by setting an extended state and a retracted state, the driving force of the blade assembly 1 in the extended state can be guaranteed, while the space occupied by the blade assembly 1 in the retracted state can be reduced, thereby reducing the space required for the blade assembly 1 to be retracted and reducing the difficulty of retracting the blade assembly 1.

[0035] According to the first aspect of the present invention, in the unfolded state, the first blade 12 and the second blade 13 are arranged circumferentially at intervals along the drive shaft 11, and in the retracted state, the second blade 13 and the first blade 12 are stacked together. This ensures the driving force of the blade assembly 1 in the unfolded state while reducing the space occupied by the blade assembly 1 in the retracted state, thereby reducing the space required for retracting the blade assembly 1 and reducing the difficulty of retracting the blade assembly 1.

[0036] According to some embodiments of the present invention, both the first blade 12 and the second blade 13 are plate-shaped and parallel to the axial direction of the drive shaft 11. Therefore, when the drive shaft 11 rotates about its central axis, the contact area between the first blade 12 and the second blade 13 and the water surface can be increased, thereby improving the propulsion efficiency of the first blade 12 and the second blade 13, and further improving the power performance of the blade drive assembly 100.

[0037] In some embodiments, in the stowed state, both the first blade 12 and the second blade 13 are horizontally positioned. This allows full utilization of the small vertical space occupied by the first blade 12 and the second blade 13 when horizontally positioned, reducing the space occupied by the blade assembly 1 in the stowed state, facilitating storage, and also reducing wind resistance.

[0038] In some embodiments, in the stowed state, the first blade 12 and the second blade 13 are stacked circumferentially along the drive shaft 11. Thus, in the stowed state, the space occupied by the first blade 12 and the second blade 13 in the axial direction of the drive shaft 11 can be reduced, that is, the space occupied by the blade assembly 1 in the stowed state is reduced, making it easier to store.

[0039] like Figure 5 As shown, according to some embodiments of the present invention, the propeller drive assembly 100 further includes a connecting shaft 14, a second propeller 13 disposed on the connecting shaft 14, and the connecting shaft 14 passing through the drive shaft 11. The connecting shaft 14 has an unlocked state and a locked state. In the unlocked state, the connecting shaft 14 is rotatable relative to the drive shaft 11, so that the propeller assembly 1 can switch between an unfolded state and a retracted state. In the locked state, the second propeller 13 is fixed relative to the drive shaft 11. That is, the drive assembly 2 can control the connecting shaft 14 to lock or unlock relative to the drive shaft 11. In the unlocked state, the connecting shaft 14 is rotatable relative to the drive shaft 11, so that the rotation of the connecting shaft 14 relative to the drive shaft 11 can drive the second propeller 13 to rotate relative to the drive shaft 11, or the rotation of the drive shaft 11 can drive the first propeller 12 to rotate, so as to adjust the positional relationship between the second propeller 13 and the first propeller 12, thereby realizing the switching between the first propeller 12 and the second propeller 13 in the unfolded state and the retracted state. In the locked state, the second blade 13 cannot rotate circumferentially relative to the drive shaft 11, thus maintaining the relative position between the first blade 12 and the second blade 13, thereby ensuring that the blade assembly 1 can be stably maintained in the unfolded or retracted state.

[0040] According to some embodiments of the present invention, the drive assembly 2 includes a first drive unit 21 and a second drive unit 22. The first drive unit 21 is connected to the connecting shaft 14 and is used to drive the connecting shaft 14 to switch between an unlocked state and a locked state. The second drive unit 22 is connected to the drive shaft 11 and is used to drive the drive shaft 11 to rotate. When the connecting shaft 14 is in the unlocked state, the second drive unit 22 drives the blade assembly 1 to switch between an unfolded state and a retracted state. When the connecting shaft 14 is in the locked state and the blade assembly 1 is in the unfolded state, the second drive unit 22 drives the drive shaft 11 and the connecting shaft 14 to rotate synchronously.

[0041] In other words, such as Figures 9 to 11As shown, the first drive unit 21 drives the connecting shaft 14 to move, thereby controlling the locking and unlocking between the connecting shaft 14 and the drive shaft 11. For example, when the blade assembly 1 needs to work, the first drive unit 21 can control the connecting shaft 14 to switch to the unlocked state. The relative position between the first blade 12 and the second blade 13 can be switched from the retracted state to the unfolded state under the drive of the second drive unit 22. Then, the first drive unit 21 can drive the connecting shaft 14 to switch to the locked state again, so that the position between the second blade 13 and the first blade 12 is fixed to keep the blade assembly 1 in the unfolded state, so as to ensure the propulsion effect of the blade assembly 1. At this time, the second drive unit 22 can send driving force to the drive shaft 11 to drive the drive shaft 11 to rotate, thereby causing the blade assembly 1 in the unfolded state to rotate for propulsion.

[0042] Therefore, by setting the first drive unit 21 and the second drive unit 22 to control the locking and unlocking between the connecting shaft 14 and the drive shaft 11 and the overall rotation of the blade assembly 1, the reliability of the drive assembly 2 can be improved. By controlling the blade assembly 1 to switch between the unfolded state and the retracted state and to control the rotation of the blade assembly 1 through the second drive unit 22, the integration of the second drive unit 22 can be improved, thereby reducing the number of parts in the drive assembly 2, reducing the cost of the blade drive assembly 100 and reducing the installation space required for the blade drive assembly 100.

[0043] According to some embodiments of the present invention, such as Figure 1 , Figure 5 and Figure 7 As shown, the propeller drive assembly 100 includes a drive shaft 3 and a locking seat 4. The drive shaft 11 is slidable relative to the drive shaft 3 along the axial direction and rotates synchronously with the drive shaft 3. The second drive unit 22 is used to drive the drive shaft 3 to rotate. The connecting shaft 14 moves synchronously with the drive shaft 11 along the axial direction of the drive shaft 11. The locking seat 4 is located on the side of the drive shaft 3 away from the first propeller 12. The drive shaft 3 is rotatable relative to the locking seat 4. The connecting shaft 14 also has a fixed state. The first drive unit 21 is used to drive the connecting shaft 14 to move along the axial direction of the drive shaft 11 to switch between a fixed state, an unlocked state, and a locked state.

[0044] In the fixed state, the connecting shaft 14 and the drive shaft 11 are locked with the locking seat 4 to restrict the rotation of the blade assembly 1; in the unlocked state, the connecting shaft 14 is rotatable relative to the transmission shaft 3 and the locking seat 4, and the drive shaft 11 is rotatable relative to the locking seat 4; in the locked state, the connecting shaft 14 and the drive shaft 11 are rotatable relative to the locking seat 4, and the connecting shaft 14 is locked with the transmission shaft 3 and rotates synchronously.

[0045] In other words, since the drive shaft 11 is axially movable relative to the transmission shaft 3, the first drive unit 21 can move synchronously with the drive shaft 11 axially via the drive connecting shaft 14. During this process, the drive shaft 11 always maintains a synchronous rotational connection with the transmission shaft 3. That is, the rotation of the transmission shaft 3 drives the drive shaft 11 to rotate synchronously. In the unlocked state, the connecting shaft 14 is rotatable relative to the transmission shaft 3, that is, the connecting shaft 14 is rotatable relative to the drive shaft 11. Thus, the rotation of the connecting shaft 14 relative to the drive shaft 11 can be used to adjust the relative position between the first blade 12 and the second blade 13, thereby switching the first blade 12 and the second blade 13 between the unfolded state and the retracted state. Specifically, the second drive unit 22 drives the transmission shaft 3 to rotate, thereby driving the drive shaft 11 to rotate and adjusting the relative position between the first blade 12 and the second blade 13.

[0046] In the locked state, the connecting shaft 14 is locked to the transmission shaft 3, so that the connecting shaft 14 and the drive shaft 11 can be locked together by the transmission shaft 3 to rotate synchronously. The second drive unit 22 drives the transmission shaft 3 to rotate, thereby driving the drive shaft 11 to rotate, so as to drive the first blade 12 and the second blade 13 to rotate synchronously.

[0047] In the fixed state, both the connecting shaft 14 and the drive shaft 11 are locked to the locking seat 4, so that neither the connecting shaft 14 nor the drive shaft 11 can rotate relative to the locking seat 4. That is, the blade assembly 1 cannot rotate relative to the locking seat 4, thereby avoiding abnormal noise or interference caused by the rotation of the blade assembly 1.

[0048] According to some embodiments of the present invention, the propeller drive assembly 100 has an operating state and a retracted state. In the operating state, the connecting shaft 14 is locked and the first propeller blade 12 and the second propeller blade 13 are deployed. In the retracted state, the connecting shaft 14 is fixed and the first propeller blade 12 and the second propeller blade 13 are retracted. In the operating state, the connecting shaft 14 is locked, allowing the first propeller blade 12 and the second propeller blade 13 to remain deployed, thus ensuring the propulsion efficiency of the propeller assembly 1. Furthermore, at this time, the connecting shaft 14 and the drive shaft 11 can rotate freely relative to the locking seat 4, thereby enabling the second drive unit 22 to drive the connecting shaft 14 and the drive shaft 11 to rotate synchronously, achieving the rotation of the propeller assembly 1. In the retracted state, by restricting the rotation of the connecting shaft 14 relative to the drive shaft 11, and restricting the rotation of the connecting shaft 14 and the drive shaft 11 relative to the locking seat 4, the first blade 12 and the second blade 13 can be kept in the retracted state. At the same time, the blade assembly 1 as a whole cannot rotate relative to the locking seat 4, so as to avoid the blade assembly 1 from rotating in the retracted state and causing collisions or abnormal noises.

[0049] According to some embodiments of the present invention, such as Figures 9 to 11As shown, the connecting shaft 14 gradually approaches the locking seat 4 when moving from the locked state to the unlocked state and from the unlocked state to the fixed state. That is, in the fixed state, the distance between the first blade 12 and the second blade 13 and the locking seat 4 is the closest, and in the locked state, the distance between the first blade 12 and the second blade 13 and the locking seat 4 is the farthest. This ensures that the blade assembly 1 extends a sufficient length for propulsion in the working state, and reduces the space occupied by the blade assembly 1 and reduces wind resistance in the retracted state.

[0050] According to some embodiments of the present invention, the locking seat 4 is formed with a first mating hole 41, the transmission shaft 3 is formed with a second mating hole 31, the inner circumferential surface of the first mating hole 41 and the inner circumferential surface of the second mating hole 31 are both provided with axially extending limiting grooves, the drive shaft 11 passes through the second mating hole 31 and a first rib 111 is formed on the outer circumferential surface of the drive shaft 11, and the end of the connecting shaft 14 away from the second blade 13 extends out of the drive shaft 11 to form an extension, and a second rib 141 is formed on the outer circumferential surface of the extension.

[0051] In some embodiments, the rotation limiting groove of the first mating hole 41 includes a first rotation limiting groove 42, and the rotation limiting groove of the second mating hole 31 includes a second rotation limiting groove 32 and a third rotation limiting groove 33 arranged circumferentially. In the fixed state, a portion of the first rib 111 is located within the first rotation limiting groove 42 and a portion within the second rotation limiting groove 32, while the second rib 141 is located outside the third rotation limiting groove 33 and at least a portion within the first rotation limiting groove 42. Thus, by limiting the first rib 111 and the second rib 141 through the first rotation limiting groove 42, the rotation of the drive shaft 11 and the connecting shaft 14 relative to the locking seat 4 can be effectively restricted, thereby locking the blade assembly 1 to prevent the blade assembly 1 from rotating.

[0052] In the unlocked state, the first rib 111 is located outside the first rotation limiting groove 42 and at least partially inside the second rotation limiting groove 32, while the second rib 141 is located outside the first rotation limiting groove 42 and outside the third rotation limiting groove 33. Thus, after the first rib 111 and the second rib 141 disengage from the first rotation limiting groove 42, the rotation limiting effect of the locking seat 4 on the drive shaft 11 and the connecting shaft 14 is released, allowing the drive shaft 11 and the connecting shaft 14 to rotate freely relative to the locking seat 4. Furthermore, at this time, the second rib 141 is not engaged with the third rotation limiting groove 33, allowing the transmission shaft 3 to rotate freely relative to the connecting shaft 14. Moreover, through the engagement of the first rib 111 and the second rotation limiting groove 32, the drive shaft 11 and the transmission shaft 3 rotate synchronously, thereby driving the transmission shaft 3 to rotate via the second drive unit 22, which in turn drives the drive shaft 11 to rotate relative to the connecting shaft 14, realizing the switching between the unfolded and retracted states of the propeller assembly 1.

[0053] In the locked state, at least a portion of the first rib 111 is located within the second limiting groove 32, and at least a portion of the second rib 141 is located within the third limiting groove 33. At this time, both the first rib 111 and the second rib 141 are located outside the first limiting groove 42. Through the cooperation between the second limiting groove 32 and the first rib 111, and the cooperation between the third limiting groove 33 and the second rib 141, the rotation of the drive shaft 11 and the connecting shaft 14 relative to the transmission shaft 3 can be effectively restricted. This allows the drive shaft 11 and the connecting shaft 14 to rotate synchronously by locking the transmission shaft 3, and thus drive the blade assembly 1 to rotate under the drive of the second drive unit 22.

[0054] In one embodiment, the first rib 111 has two symmetrically distributed on opposite sides of the drive shaft 11, the second rib 141 has two symmetrically distributed on opposite sides of the connecting shaft 14, and the first rotation groove 42, the second rotation groove 32 and the third rotation groove 33 each have two oppositely arranged grooves. In addition, in the retracted state, the first rib 111 and the second rib 141 are arranged opposite each other along the axial direction of the drive shaft 11, and in the unfolded state, the first rib 111 and the second rib 141 are arranged at a 90-degree angle.

[0055] In some embodiments, the rotation limiting groove of the first mating hole 41 includes a fourth rotation limiting groove and a fifth rotation limiting groove arranged circumferentially, and the rotation limiting groove of the second mating hole 31 includes a sixth rotation limiting groove; in the fixed state, a portion of the first protrusion 111 is located within the fourth rotation limiting groove and a portion within the sixth rotation limiting groove, and the second protrusion 141 is located outside the sixth rotation limiting groove and at least a portion within the fifth rotation limiting groove. Thus, through the engagement of the first protrusion 111 with the fourth rotation limiting groove and the engagement of the second protrusion 141 with the fifth rotation limiting groove, the rotation of the drive shaft 11 and the connecting shaft 14 relative to the locking seat 4 can be effectively limited, thereby achieving the locking of the blade assembly 1 to prevent the blade assembly 1 from rotating.

[0056] In the unlocked state, the first rib 111 is located outside the fourth rotation limiting groove and at least partially inside the sixth rotation limiting groove, while the second rib 141 is located outside the fifth rotation limiting groove and outside the sixth rotation limiting groove. Therefore, after the first rib 111 disengages from the fourth rotation limiting groove and the second rib 141 disengages from the fifth rotation limiting groove, the rotation limiting effect of the locking seat 4 on the drive shaft 11 and the connecting shaft 14 is released, allowing the drive shaft 11 and the connecting shaft 14 to rotate freely relative to the locking seat 4. Furthermore, at this time, the second rib 141 is not engaged with the sixth rotation limiting groove, allowing the transmission shaft 3 to rotate freely relative to the connecting shaft 14. Moreover, through the engagement of the first rib 111 with the sixth rotation limiting groove, the drive shaft 11 and the transmission shaft 3 rotate synchronously, thereby driving the transmission shaft 3 to rotate via the second drive unit 22, which in turn drives the drive shaft 11 to rotate relative to the connecting shaft 14, realizing the switching between the unfolded and retracted states of the blade assembly 1.

[0057] In the locked state, at least a portion of the first rib 111 and at least a portion of the second rib 141 are located within the sixth limiting groove. At this time, the first rib 111 is located outside the fourth limiting groove, and the second rib 141 is located outside the fifth limiting groove. By limiting the first rib 111 and the second rib 141 through the sixth limiting groove, the rotation of the drive shaft 11 and the connecting shaft 14 relative to the transmission shaft 3 can be effectively restricted. This allows the drive shaft 11 and the connecting shaft 14 to rotate synchronously through the locking of the transmission shaft 3, and thus drive the blade assembly 1 to rotate under the drive of the second drive unit 22.

[0058] According to some embodiments of the present invention, such as Figure 4 and Figure 6 As shown, the drive shaft 11 has an axially extending mounting cavity 113, and the connecting shaft 14 passes through the mounting cavity 113. The outer peripheral wall of the end of the mounting cavity 113 away from the locking seat 4 has a radially extending clearance notch 112. The second blade 13 passes through the clearance notch 112. Along the axial direction of the drive shaft 11, the end of the clearance notch 112 away from the locking seat 4 extends to the end face of the drive shaft 11 away from the locking seat 4 and forms a mounting port 114. The first blade 12 is adapted to be inserted into the clearance notch 112 through the mounting port 114. A limiting baffle 15 is provided on the end face of the drive shaft 11 away from the locking seat 4. The limiting baffle 15 is used to close the mounting port 114.

[0059] Therefore, during the assembly of the blade assembly 1, before installing the limiting baffle 15, the second blade 13 is inserted into the clearance notch 112 through the mounting port 114, and then the limiting baffle 15 is installed on the drive shaft 11. Through the limiting baffle 15 and the bottom wall of the clearance notch 112 facing the mounting port 114, the axial movement freedom of the second blade 13 relative to the drive shaft 11 can be effectively restricted. Since the connecting shaft 14 is connected to the second blade 13, the axial movement freedom of the connecting shaft 14 relative to the drive shaft 11 can be restricted, thereby enabling the synchronous movement of the drive shaft 11 and the connecting shaft 14 along the axial direction.

[0060] According to some embodiments of the present invention, such as Figure 1As shown, the blade assembly 1 has two sets symmetrically distributed on opposite sides of the first drive unit 21. The blade assemblies 1 on both sides can rotate and propel simultaneously, thereby improving the overall propulsion efficiency of the blade drive assembly 100. The first drive unit 21 is connected to the connecting shaft 14 of the two sets of blade assemblies 1. The connecting shaft 14 is rotatable relative to the first drive unit 21 around the central axis of the drive shaft 11. The first drive unit 21 is used to drive the two sets of blade assemblies 1 to move closer to each other or further away from each other. That is, the first drive unit 21 can drive the blade assemblies 1 on both sides to move closer to each other, and the first drive unit 21 can also drive the blade assemblies 1 on both sides to move further away from each other. In other words, the distance between the blade assemblies 1 on both sides can be flexibly adjusted to meet the requirements of different scenarios. For example, when the blade assemblies 1 need to propel, the first drive unit 21 can be used to push out the blade assemblies 1 on both sides for propulsion; when propulsion is not needed, the first drive unit 21 can be used to retract the blade assemblies 1 on both sides for easy concealment and storage. Therefore, the two sets of blade assemblies 1 share the same first drive unit 21, which can effectively reduce the number of first drive units 21, thereby reducing the production cost and installation space occupied by the blade drive assembly 100.

[0061] Furthermore, the first drive unit 21 is located between the blade assemblies 1 on both sides, which facilitates the simultaneous connection of the first drive unit 21 to the connecting shaft 14 of the blade assemblies 1 on both sides. Further, the first blade 12 and the second blade 13 are located at the end of the drive shaft 11 opposite to the first drive unit 21, which increases the distance between the first blade 12 and the second blade 13 and the first drive unit 21, thus avoiding interference.

[0062] According to some embodiments of the present invention, such as Figure 2 As shown, the first drive unit 21 includes a first drive motor 211, a first transmission gear 212, a first rack 213, and a second rack 214. The first drive motor 211 is mounted on the vehicle frame. The first transmission gear 212 is mounted on the output shaft of the first drive motor 211 and meshes with the first rack 213 and the second rack 214. The first rack 213 and the second rack 214 are slidably mounted on the vehicle frame along the axial direction of the drive shaft 11. The first rack 213 and the second rack 214 are located on opposite sides of the first transmission gear 212 along a first direction, which is perpendicular to the axial direction of the drive shaft 11. The rotation axis of the first transmission gear 212 extends along a second direction, which is perpendicular to the first direction and the axial direction of the drive shaft 11. When the first transmission gear 212 rotates, the first rack 213 and the second rack 214 move in opposite directions. The blade assemblies 1 on both sides are rotatably connected to the first rack 213 and the second rack 214, respectively.

[0063] Therefore, by driving the first transmission gear 212 to rotate through a first drive motor 211, the two blade assemblies 1 on both sides can be driven to move closer or further apart, which can simplify the structure of the first drive unit 21. The axis of rotation of the connecting shaft 14 relative to the first rack 213 and the second rack 214 extends along the axial direction of the drive shaft 11, ensuring that while the connecting shaft 14 can be driven to move axially along the drive shaft 11 by the first drive unit 21, the drive shaft 11 can simultaneously drive the connecting shaft 14 to rotate freely relative to the first drive unit 21 for propulsion.

[0064] In some embodiments, the axial direction of the drive shaft 11 is left-right, the first direction is front-back, and the second direction is up-down. The first rack 213 is located in front of the second rack 214. The right end of the connecting shaft 14 on the left side is connected to the left end of the first rack 213 through a spherical mating pair, and the left end of the connecting shaft 14 on the right side is connected to the right end of the second rack 214 through a spherical mating pair. This can better release the rotational degree of freedom of the blade assembly 1 relative to the first drive assembly 2.

[0065] According to some embodiments of the present invention, the two sets of blade assemblies 1 can rotate independently. Two second drive units 22 are provided, each connected to one of the two sets of blade assemblies 1 respectively. The second drive units 22 are used to drive the corresponding blade assembly 1 to rotate in the deployed state. That is, the rotation of the corresponding blade assembly 1 can be independently controlled by the two second drive units 22, thereby enabling the blade assemblies 1 on both sides to achieve the same direction, different directions, the same speed, and different speeds, etc., thus improving the functional versatility of the blade drive assembly 100.

[0066] According to some embodiments of the present invention, such as Figures 12 to 14 As shown, the propeller drive assembly 100 has operating states, including a first mode, a second mode, a third mode, a fourth mode, and a fifth mode. In the first mode, the drive shafts 11 of both sets of propeller assemblies 1 rotate clockwise at the same speed. That is, in the first mode, the propeller assemblies 1 on both sides rotate clockwise simultaneously at the same speed, thereby providing a stable forward thrust. In other words, the propeller drive assembly 100 is in forward mode at this time.

[0067] In the second mode, the drive shafts 11 of both sets of blade assemblies 1 are reversed and rotate at the same speed. That is, in the second mode, the blade assemblies 1 on both sides are reversed at the same speed, thus providing a stable backward thrust. In other words, the blade drive assembly 100 is in the reverse mode at this time.

[0068] In the third mode, the drive shafts 11 of both sets of propeller assemblies 1 rotate clockwise, but at different speeds. That is, in the third mode, the propeller assemblies 1 on both sides rotate clockwise simultaneously at different speeds, thus providing forward propulsion while simultaneously steering the vehicle. For example, when the left propeller assembly 1 rotates slower and the right propeller assembly 1 rotates faster, it generates propulsion towards the left front; when the left propeller assembly 1 rotates faster and the right propeller assembly 1 rotates slower, it generates propulsion towards the right front. In this mode, the propeller drive assembly 100 is in a forward-turning mode. This improves the flexibility of the propeller drive assembly 100 in turning left or right while moving forward.

[0069] In the fourth mode, the drive shafts 11 of both sets of propeller assemblies 1 rotate in opposite directions, and the rotational speeds of the drive shafts 11 of the two sets of propeller assemblies 1 are different. That is, in the fourth mode, the propeller assemblies 1 on both sides rotate in opposite directions simultaneously but at different speeds, thereby providing rearward propulsion while achieving vehicle steering. For example, when the left propeller assembly 1 rotates slower and the right propeller assembly 1 rotates faster, it can generate propulsion force towards the left rear; when the left propeller assembly 1 rotates faster and the right propeller assembly 1 rotates slower, it can generate propulsion force towards the right rear. That is, the propeller drive assembly 100 is in reverse turning mode at this time. Thus, the flexibility of the propeller drive assembly 100 in turning left or right during reverse movement can be improved.

[0070] In the fifth mode, the drive shaft 11 of one set of blade assemblies 1 rotates clockwise, while the drive shaft 11 of the other set of blade assemblies 1 rotates counterclockwise, and the rotation speeds of the drive shafts 11 of both sets of blade assemblies 1 are the same. That is, in the fifth mode, the blade assemblies 1 on both sides rotate simultaneously at the same speed, but in opposite directions. For example, when the left blade assembly 1 rotates clockwise and the right blade assembly 1 rotates counterclockwise, the blade drive assembly 100 can turn to the right; when the left blade assembly 1 rotates counterclockwise and the right blade assembly 1 rotates clockwise, the blade drive assembly 100 can turn to the left. In other words, the blade drive assembly 100 is in a stationary turning mode at this time.

[0071] Therefore, the two second drive units 22 can independently control the rotation of the corresponding blade assembly 1, enabling the blade drive assembly 100 to perform functions such as forward movement, backward movement, forward turning, backward turning, and U-turn, thereby improving the functional diversity of the blade drive assembly 100.

[0072] According to some embodiments of the present invention, in the deployed state, the first blade 12 is perpendicular to the second blade 13. This allows the first blade 12 and the second blade 13 to be evenly distributed circumferentially on the drive shaft 11, thereby enabling stable and uniform propulsion via the first blade 12 and the second blade 13, which helps to improve the stability of the blade drive assembly 100.

[0073] According to some embodiments of the present invention, such as Figures 4 to 6 As shown, the first blade 12 includes two first blades 121, which are centrally symmetrically distributed on the outer peripheral surface of the drive shaft 11 relative to the drive shaft 11. The second blade 13 includes two second blades 131, which are centrally symmetrically distributed on the outer peripheral surface of the connecting shaft 14 relative to the drive shaft 11. Two clearance notches 112 are formed on the outer peripheral wall of the drive shaft 11 to allow the movement of the two second blades 131. The central angle corresponding to the clearance notches 112 is ninety degrees.

[0074] It should be noted that the central angle corresponding to the clearance notch 112 refers to the central angle corresponding to the arc of the span of the clearance notch 112 in the circumferential direction of the drive shaft 11. By setting the clearance notch 112, while ensuring that the first blade 121 and the second blade 131 can be arranged circumferentially along the drive shaft, clearance space can be provided for the rotation of the second blade 131 relative to the drive shaft 11. In addition, by limiting the central angle corresponding to the clearance notch 112, the angular range of the rotation of the second blade 131 relative to the first blade 121 can be effectively limited. That is, the clearance notch 112 can limit the second blade 131 by forming a limit on the opposite side walls along the axial direction of the drive shaft 11, so as to ensure that the second blade 131 can reliably move to the unfolded state or the retracted state.

[0075] In some embodiments, such as Figure 3 As shown, the second drive unit 22 includes a second drive motor 221, a second transmission gear 222 and a third transmission gear 223. The second drive motor 221 is located on the upper side of the transmission shaft 3. The second transmission gear 222 is located on the output shaft of the second drive motor 221 and meshes with the third transmission gear 223. The third transmission gear 223 is interference-fitted on the transmission shaft 3.

[0076] A vehicle according to a second aspect of the present invention will now be described with reference to the accompanying drawings.

[0077] According to a second aspect of the present invention, a vehicle includes a frame and a propeller drive assembly 100 as described in the first aspect, the propeller drive assembly 100 being disposed on the frame. The vehicle can be an amphibious vehicle with strong adaptability to different terrains.

[0078] According to a second aspect embodiment of the vehicle, in the deployed state, the first blade 12 and the second blade 13 are arranged circumferentially at intervals along the drive shaft 11, and in the retracted state, the second blade 13 and the first blade 12 are stacked together. This ensures the driving force of the blade assembly 1 in the deployed state while reducing the space occupied by the blade assembly 1 in the retracted state, thereby reducing the space required for retracting the blade assembly 1 and reducing the difficulty of retracting the blade assembly 1.

[0079] In this application, "multiple" refers to two or more.

[0080] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0081] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0082] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0083] Unless otherwise specified, all steps in this application may be performed sequentially or randomly. For example, if a method includes steps A and B, it means that the method may include steps A and B performed sequentially, or it may include steps B and A performed sequentially. For example, if a method may also include step C, it means that step C may be added to the method in any order. For example, the method may include steps A, B, and C, or it may include steps A, C, and B, or it may include steps C, A, and B, etc.

[0084] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A paddle drive assembly, characterized by, Comprise: A paddle assembly comprising a driving shaft, a first paddle and a second paddle, the first paddle is arranged on the driving shaft, the second paddle is rotatably arranged on the driving shaft around a central axis of the driving shaft, the paddle assembly has an unfolded state and a storage state, in the unfolded state, the first paddle and the second paddle are arranged in a circumferential direction of the driving shaft, in the storage state, the second paddle and the first paddle are arranged in a stacked manner; A driving assembly is in transmission connection with the driving shaft and the second paddle, the driving assembly is used to drive the paddle assembly to switch between the unfolded state and the storage state, and is used to drive the paddle assembly to rotate in the unfolded state.

2. The paddle drive assembly of claim 1, wherein, The first paddle and the second paddle are both in the shape of a plate parallel to the axial direction of the driving shaft; Wherein, in the storage state, the first paddle and the second paddle are both horizontally placed; and / or, in the storage state, the first paddle and the second paddle are stacked in the circumferential direction of the driving shaft.

3. The paddle drive assembly of claim 1, wherein, Further comprising a connecting shaft, the second paddle is arranged on the connecting shaft, the connecting shaft is arranged through the driving shaft, the connecting shaft has an unlocked state and a locked state, in the unlocked state, the connecting shaft is rotatable relative to the driving shaft, so that the paddle assembly can switch between the unfolded state and the storage state, in the locked state, the connecting shaft is relatively fixed with the driving shaft.

4. The paddle drive assembly of claim 3, wherein, The driving assembly comprises a first driving unit and a second driving unit, the first driving unit is connected with the connecting shaft and is used to drive the connecting shaft to switch between the unlocked state and the locked state, the second driving unit is connected with the driving shaft and is used to drive the driving shaft to rotate; wherein, When the connecting shaft is in the unlocked state, the second driving unit drives the paddle assembly to switch between the unfolded state and the storage state; When the connecting shaft is in the locked state and the paddle assembly is in the unfolded state, the second driving unit drives the driving shaft and the connecting shaft to rotate synchronously.

5. The paddle drive assembly of claim 4, wherein, Further comprising: A transmission rotating shaft and a locking seat, the driving shaft is axially slidable relative to the transmission rotating shaft and is in synchronous rotation with the transmission rotating shaft, the second driving unit is used to drive the transmission rotating shaft to rotate, the connecting shaft moves synchronously with the driving shaft in the axial direction of the driving shaft, the locking seat is located on the side of the transmission rotating shaft away from the first paddle, the transmission rotating shaft is rotatable relative to the locking seat, the connecting shaft also has a fixed state, the first driving unit is used to drive the connecting shaft to move in the axial direction of the driving shaft, so as to switch between the fixed state, the unlocked state and the locked state; Wherein, in the fixed state, the connecting shaft and the driving shaft are locked with the locking seat to limit the rotation of the paddle assembly; In the unlocked state, the connecting shaft is rotatable relative to the transmission rotating shaft and the locking seat, and the driving shaft is rotatable relative to the locking seat; In the locking state, the connecting shaft and the driving shaft are rotatable relative to the locking seat, and the connecting shaft is locked and synchronously rotated with the transmission rotating shaft.

6. The paddle drive assembly of claim 5, wherein, The paddle driving assembly has a working state and a retracted state, in the working state, the connecting shaft is in the locking state and the first paddle and the second paddle are in the unfolded state; In the retracted state, the connecting shaft is in the fixed state and the first paddle and the second paddle are in the stowed state.

7. The paddle drive assembly of claim 6, wherein, The connecting shaft gradually approaches the locking seat when moving from the locking state to the unlocking state and from the unlocking state to the fixed state.

8. The paddle drive assembly of claim 5, wherein, The locking seat is formed with a first matching hole, the transmission rotating shaft is formed with a second matching hole, the inner circumferential surface of the first matching hole and the inner circumferential surface of the second matching hole are both provided with an axial extending rotation limiting groove, the driving shaft is arranged in the second matching hole and the outer circumferential surface of the driving shaft is formed with a first protruding rib, the end of the connecting shaft away from the second paddle extends out of the driving shaft to form an extension, and the outer circumferential surface of the extension is formed with a second protruding rib; The first matching hole includes a first rotation limiting groove, the second matching hole includes a second rotation limiting groove and a third rotation limiting groove arranged in a circumferential direction; in the fixed state, part of the first protruding rib is located in the first rotation limiting groove and part of the first protruding rib is located in the second rotation limiting groove, the second protruding rib is located outside the third rotation limiting groove and at least part of the second protruding rib is located in the first rotation limiting groove; in the unlocking state, the first protruding rib is located outside the first rotation limiting groove and at least part of the first protruding rib is located in the second rotation limiting groove, the second protruding rib is located outside the first rotation limiting groove and outside the third rotation limiting groove; in the locking state, at least part of the first protruding rib is located in the second rotation limiting groove and at least part of the second protruding rib is located in the third rotation limiting groove; Or, the first matching hole includes a fourth rotation limiting groove and a fifth rotation limiting groove arranged in a circumferential direction, and the second matching hole includes a sixth rotation limiting groove; in the fixed state, part of the first protruding rib is located in the fourth rotation limiting groove and part of the first protruding rib is located in the sixth rotation limiting groove, and the second protruding rib is located outside the sixth rotation limiting groove and at least part of the second protruding rib is located in the fifth rotation limiting groove; in the unlocking state, the first protruding rib is located outside the fourth rotation limiting groove and at least part of the first protruding rib is located in the sixth rotation limiting groove, the second protruding rib is located outside the fifth rotation limiting groove and outside the sixth rotation limiting groove; in the locking state, at least part of the first protruding rib is located in the sixth rotation limiting groove and at least part of the second protruding rib is located in the sixth rotation limiting groove.

9. The paddle drive assembly of claim 5, wherein, The driving shaft is formed with a mounting cavity penetrating in the axial direction, the connecting shaft is arranged in the mounting cavity, the outer peripheral wall of the mounting cavity away from one end of the locking seat is formed with an avoiding notch penetrating in the radial direction of the driving shaft, the second paddle is arranged in the avoiding notch, and the avoiding notch extends to the end face of the driving shaft away from the locking seat in the axial direction of the driving shaft, and the mounting opening is formed on the end face of the driving shaft away from the locking seat, the first paddle is adapted to be arranged in the avoiding notch through the mounting opening, and the end face of the driving shaft away from the locking seat is provided with a limiting baffle for closing the mounting opening.

10. The paddle drive assembly of claim 4, wherein, The paddle assembly is provided with two groups of paddles symmetrically arranged on opposite sides of the first driving unit, the first driving unit is connected with the connecting shafts of the two groups of paddle assemblies, and the first driving unit is used to drive the two groups of paddle assemblies to move close to or away from each other.

11. The paddle drive assembly of claim 10, wherein, The first driving unit comprises a first driving motor, a first transmission gear, a first rack and a second rack, the first transmission gear is arranged on the output shaft of the first driving motor and is engaged with the first rack and the second rack, the first rack and the second rack are located on opposite sides of the first transmission gear in a first direction, the first direction is perpendicular to the axial direction of the driving shaft, the rotation axis of the first transmission gear extends in a second direction, the second direction is perpendicular to the first direction and the axial direction of the driving shaft, when the first transmission gear rotates, the first rack and the second rack move in opposite directions in the circumferential direction of the driving shaft, and the connecting shafts on the two sides are respectively connected with the first rack and the second rack.

12. The paddle drive assembly of claim 9, wherein, The second driving unit is provided with two, and the two second driving units are respectively connected with the two groups of paddle assemblies, and the second driving unit is used to drive the corresponding paddle assembly to rotate in the unfolded state.

13. The paddle drive assembly of claim 12, wherein, The paddle driving assembly has a working state, and the working state comprises a first mode, a second mode, a third mode, a fourth mode and a fifth mode; wherein, in the first mode, the driving shafts of the two groups of paddle assemblies are all forward rotating and the rotating speeds of the driving shafts of the two groups of paddle assemblies are the same; in the second mode, the driving shafts of the two groups of paddle assemblies are all reverse rotating and the rotating speeds of the driving shafts of the two groups of paddle assemblies are the same; in the third mode, the driving shafts of the two groups of paddle assemblies are all forward rotating and the rotating speeds of the driving shafts of the two groups of paddle assemblies are different; in the fourth mode, the driving shafts of the two groups of paddle assemblies are all reverse rotating and the rotating speeds of the driving shafts of the two groups of paddle assemblies are different; in the fifth mode, the driving shaft of one group of paddle assemblies is forward rotating, the driving shaft of the other group of paddle assemblies is reverse rotating, and the rotating speeds of the driving shafts of the two groups of paddle assemblies are the same.

14. The paddle drive assembly of claim 3, wherein, In the unfolded state, the first paddle is perpendicular to the second paddle.

15. The paddle drive assembly of claim 14, wherein, The first paddle comprises two first blades, the two first blades are symmetrically distributed on the outer circumferential surface of the driving shaft, the second paddle comprises two second blades, the two second blades are symmetrically distributed on the outer circumferential surface of the connecting shaft, and two avoiding notches for avoiding movement of the two second blades are formed on the outer circumferential wall of the driving shaft, and the corresponding central angle of the avoiding notches is ninety degrees.

16. A vehicle characterized by comprising: Comprise: a frame; the paddle driving assembly according to any one of claims 1-15 is arranged on the frame.

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