Compact wheel duct power device and hovercar

Abstract

The utility model discloses a compact type wheel duct power plant and aerocar, compact type wheel duct power plant includes: flight power system, ground walking power system and duct clamp, flight power system includes duct wall, fan and first power plant, fan is provided in duct wall, ground walking power system is provided in duct wall. The first power device is arranged on the duct wall and used for driving the fan to rotate, the ground walking power system comprises a hub assembly and a second power device, the hub assembly is arranged on the duct wall, the second power device is used for driving the hub assembly to operate, the duct clamp is arranged on the radial outer side of the duct wall, and the second power device is arranged on the duct clamp. Therefore, the hub assembly is arranged on the duct wall, and the second power device is arranged on the duct clamp, so that the integration of a flight power system and a ground walking power system is realized, the structure of the compact wheel duct power device is favorably simplified, and the space required for arranging the compact wheel duct power device is reduced; and weight reduction and cost reduction of the hovercar are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of flying cars, in particular to a compact wheel-ducted power device and a flying car. Background Art

[0002] In related technologies, the power systems on flying cars are dispersed, resulting in a large space required for arranging the power devices on the flying cars. Moreover, separate installation structures need to be set for the flight power system and the ground power system respectively, leading to a complex structure, large volume of the flying car, and an increase in the weight of the flying car. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a compact wheel-ducted power device, and the structure of the compact wheel-ducted power device is simple, which is conducive to realizing the miniaturized design of the compact wheel-ducted power device.

[0004] A compact wheel-ducted power device includes: a flight power system, which includes a duct wall, a fan and a first power device. The fan is arranged inside the duct wall, and the first power device is used to drive the fan to rotate; a ground walking power system, which includes a hub assembly and a second power device. The hub assembly is arranged on the duct wall and coaxially arranged with the duct wall, and the hub assembly is located on the side of the duct wall away from the duct lip. The second power device is used to drive the hub assembly to operate; a duct clamp, which is arranged on the radial outer side of the duct wall and is used to clamp the duct wall in the circumferential direction, and the second power device is arranged on the duct clamp.

[0005] According to the compact wheel-ducted power device of the utility model, by arranging the hub assembly on the duct wall, the second power device is arranged on the duct clamp, so as to realize the integration of the flight power system and the ground walking power system, realize the design of the compact wheel-ducted power device, reduce the space required for arranging the compact wheel-ducted power device, and there is no need to separately set the installation structures for the ground walking power system and the flight power system, effectively simplifying the structural layout of the flying car and being conducive to reducing the weight and cost of the flying car.

[0006] According to some embodiments of the utility model, the hub assembly includes: a hub, which is power-connected to the second power device and is used for rolling cooperation with the ground; a duct wall bearing intermediate body, which is arranged at one end of the duct wall away from the duct lip in the axial direction; a needle roller bearing, which is arranged on the duct wall bearing intermediate body in a rolling manner and is supported between the hub and the duct wall bearing intermediate body.

[0007] According to some embodiments of the present utility model, the hub assembly further includes: a duct wall bearing intermediate retaining ring, which is disposed on the duct wall bearing intermediate body, located outside the needle roller bearing, and is used for limiting cooperation with the needle roller bearing.

[0008] According to some embodiments of the present utility model, the hub assembly further includes: a hub retaining ring, which is disposed at an axial end of the hub away from the second power device, and is used for limiting cooperation with the hub.

[0009] According to some embodiments of the present utility model, the second power device is provided with a driving gear, and the outer periphery of the hub is provided with a driven gear. The driving gear is meshed with the driven gear to drive the hub to rotate; wherein, the axial direction of the driving gear is parallel to the central axis of the duct wall.

[0010] According to some embodiments of the present utility model, the duct fixture includes: an upper duct fixture, which has a first semi-circular clamping groove opening towards the central side of the duct wall, and the second power device is disposed on the upper duct fixture; a lower duct fixture, which has a second semi-circular clamping groove opening towards the central side of the duct wall; wherein, the duct wall is clamped between the first semi-circular clamping groove and the second semi-circular clamping groove.

[0011] According to some embodiments of the present utility model, the duct fixture further includes a mounting seat, which is disposed on the outer side wall of the upper duct fixture and is used for mounting and fixing the second power device.

[0012] According to some embodiments of the present utility model, the mounting seat is further provided with a connecting portion, which is used for rotatably connecting with the vehicle frame of the flying vehicle around a first axis. The first axis is disposed radially outside the duct wall and is perpendicular to the central axis of the duct wall.

[0013] According to some embodiments of the present utility model, the compact wheel duct power device further includes: a balance auxiliary wheel, which is disposed outside the duct wall, and in the axial direction of the duct wall, the balance auxiliary wheel is spaced apart from the hub.

[0014] Another object of the present utility model is to propose a flying vehicle.

[0015] A flying vehicle includes the above-mentioned compact wheel duct power device.

[0016] The flying vehicle has the same advantages as the above-mentioned compact wheel duct power device, which will not be elaborated here one by one.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a schematic structural diagram of a compact wheel ducted power device according to an embodiment of the present utility model;

[0020] Figure 2 is a cross-sectional view of a compact wheel ducted power device according to an embodiment of the present utility model.

[0021] Reference numerals:

[0022] Compact wheel ducted power device 100, flight power system 110, duct wall 111, fan 112, first power device 113, duct lip 114,

[0023] Ground walking power system 120,

[0024] Hub assembly 121, hub 1211, duct wall bearing intermediate 1212, needle roller bearing 1213, duct wall bearing intermediate retaining ring 1214, hub retaining ring 1215, driven gear 1216,

[0025] Second power device 122, driving gear 1221,

[0026] Duct fixture 130, upper duct fixture 131, fixing part 1311, lower duct fixture 132, fixing and mating part 1321, mounting seat 133, connecting part 1331, mounting hole 1332, connecting hole 1333,

[0027] Balance auxiliary wheel 140. Detailed Embodiments

[0028] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the 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 drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "inner", "outer", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] Next, reference is made to Figure 1 - Figure 2 describe the compact wheel ducted power device 100 according to an embodiment of the present utility model.

[0032] Combined with Figure 1 and Figure 2 , the compact wheel ducted power device 100 according to an embodiment of the present utility model includes a flight power system 110. The flight power system 110 includes a duct wall 111, a fan 112, and a first power device 113. The fan 112 is disposed inside the duct wall 111, and the first power device 113 is used to drive the fan 112 to rotate.

[0033] Specifically, the fan 112 is disposed inside the duct wall 111. At least a part of the output shaft of the first power device 113 extends into the duct wall 111 and is in transmission connection with the fan 112. The output shaft of the first power device 113 can drive the fan 112 to rotate. The fan 112 rotates to compress the air flow and generate thrust, so as to enable the compact wheel ducted power device 100 to provide flight power for the flying car and realize the flight mode of the flying car.

[0034] The compact wheel duct power unit 100 also includes a ground walking power system 120, which includes a wheel hub assembly 121 and a second power unit 122. The wheel hub assembly 121 is arranged on the duct wall 111 and is coaxially arranged with the duct wall 111, and the wheel hub assembly 121 is located on the side of the duct wall 111 away from the duct lip 114, and the second power unit 122 is used to drive the wheel hub assembly 121 to operate; the duct clamp 130, the duct clamp 130 is arranged on the radial outside of the duct assembly, and is used to clamp the duct assembly in the circumferential direction, and the second power unit 122 is arranged on the duct clamp 130.

[0035] Specifically, the duct clamp 130 is clamped and fixed on the duct wall 111, and the duct wall 111 can be fixed on the frame through the duct clamp 130, so that the compact wheel duct power device 100 can be connected to the frame. At the same time, the second power device 122 is installed on the duct clamp 130, and the position of the second power device 122 relative to the duct wall 111 is fixed.

[0036] Furthermore, the wheel hub assembly 121 is arranged on the duct wall 111, and the second power device 122 is transmission-connected to the wheel hub assembly 121. The second power device 122 can drive the wheel hub assembly 121 to rotate relative to the duct wall 111, so that the wheel hub assembly 121 can roll on the ground, thereby realizing the compact wheel duct power device 100 to provide ground driving power for the flying car, so as to realize the ground driving mode of the flying car.

[0037] The hub assembly 121 is disposed on a side of the duct wall 111 away from the duct lip 114 , which helps prevent interference between the hub assembly 121 and the duct lip 114 when the hub assembly 121 rotates relative to the duct wall 111 , thereby ensuring smooth rotation of the hub assembly 121 .

[0038] In the related art, the flight power system and the ground power system of the flying car are separately arranged, resulting in a dispersed power system on the flying car, which in turn requires a large space for arranging the power device on the flying car, and requires separate installation structures for the flight power system and the ground power system, resulting in a complex structure and large volume of the flying car, and increases the weight of the flying car.

[0039] The present application arranges the wheel hub assembly 121 on the duct wall 111, so that the second power unit 122 is arranged on the duct fixture 130, thereby realizing the integration of the flight power system 110 and the ground travel power system 120, realizing the design of the compact wheel duct power unit 100, reducing the space required for arranging the compact wheel duct power unit 100, and eliminating the need to separately arrange the installation structures of the ground travel power system 120 and the flight power system 110, thereby effectively simplifying the structural layout of the flying car and facilitating the weight reduction and cost reduction of the flying car.

[0040] Among them, the first power device 113 can be configured as a ducted motor.

[0041] Such as Figure 2 As shown, in some embodiments of the present invention, the hub assembly 121 includes: a hub 1211, the hub 1211 is power-connected to the second power device 122 and is used for rolling cooperation with the ground; a ducted wall bearing intermediate body 1212, the ducted wall bearing intermediate body 1212 is arranged at one end of the ducted wall 111 away from the duct lip 114 in the axial direction; a needle bearing 1213, the needle bearing 1213 is rotatably arranged in the ducted wall bearing intermediate body 1212 and is supported between the hub 1211 and the ducted wall bearing intermediate body 1212.

[0042] Specifically, the ducted wall bearing intermediate body 1212 is fixedly installed at one end of the ducted wall 111 away from the duct lip 114 in the axial direction, the hub 1211 is sleeved on the radial outer side of the ducted wall bearing intermediate body 1212, the needle bearing 1213 is arranged between the ducted wall bearing intermediate body 1212 and the hub 1211, the hub 1211 is connected to the needle bearing 1213, and the hub 1211 can rotate relative to the ducted wall bearing intermediate body 1212 through the needle bearing 1213.

[0043] Furthermore, the second power device 122 is power-connected to the hub 1211, the second power device 122 can drive the hub 1211 to rotate relative to the ducted wall bearing intermediate body 1212, and at the same time the hub 1211 can roll on the ground, so that the compact wheel ducted power device 100 provides ground driving power for the flying car.

[0044] Among them, the ducted wall bearing intermediate body 1212 is used to fill the gap between the needle bearing 1213 and the ducted wall 111 in the axial direction, prevent the needle bearing 1213 from shaking in the radial direction, and is beneficial to improving the assembly stability of the needle bearing 1213 and the hub 1211.

[0045] Optionally, the second power device 122 can be configured as a drive motor.

[0046] Referring to Figure 2 , in some embodiments of the present invention, the hub assembly 121 further includes: a ducted wall bearing intermediate body retaining ring 1214, the ducted wall bearing intermediate body retaining ring 1214 is arranged on the ducted wall bearing intermediate body 1212, and is located outside the needle bearing 1213 and is used for limiting cooperation with the needle bearing 1213.

[0047] It should be noted that the "outside" in the above "located outside the needle bearing 1213" refers to the side of the needle bearing 1213 away from the duct lip 114 in the axial direction.

[0048] Specifically, the duct wall bearing intermediate retaining ring 1214 is disposed at one end of the duct wall bearing intermediate 1212 axially away from the duct lip 114, and the duct wall bearing intermediate retaining ring 1214 is disposed opposite to and can abut against the side of the needle roller bearing 1213 axially away from the duct lip 114, so that the duct wall bearing intermediate retaining ring 1214 can limit the needle roller bearing 1213 axially, preventing the needle roller bearing 1213 from disengaging from the side of the duct wall bearing intermediate 1212 axially away from the duct lip 114, and improving the assembly stability of the needle roller bearing 1213.

[0049] Combined with Figure 1 and Figure 2 , in some embodiments of the present utility model, the hub assembly 121 further includes: a hub retaining ring 1215, which is disposed at an axial end of the hub 1211 away from the second power device 122 and is used for limiting cooperation with the hub 1211.

[0050] Specifically, the hub retaining ring 1215 is installed on the side of the hub 1211 axially away from the second power device 122 to avoid the second power device 122, facilitating the power connection between the second power device 122 and the hub 1211. The hub retaining ring 1215 is used for limiting cooperation with the hub 1211 to further prevent the hub 1211 from slipping out of the side of the duct wall bearing intermediate 1212 away from the duct lip 114. In addition, the provision of the hub retaining ring 1215 can also facilitate the installation of the needle roller bearing 1213 between the hub 1211 and the duct wall bearing intermediate 1212, which is beneficial to improving the assembly convenience of the needle roller bearing 1213.

[0051] Combined with Figure 1 and Figure 2 , in some embodiments of the present utility model, the second power device 122 is provided with a driving gear 1221, and a driven gear 1216 is provided on the outer periphery of the hub 1211. The driving gear 1221 is meshed with the driven gear 1216 to drive the hub 1211 to rotate.

[0052] Specifically, the driving gear 1221 is disposed on the output shaft of the second power device 122. The output shaft of the second power device 122 can drive the driving gear 1221 to rotate. A driven gear 1216 extending along the circumferential direction of the hub 1211 is disposed on the side of the hub 1211 axially close to the second power device 122. The driving gear 1221 can drive the driven gear 1216 to rotate, and the driven gear 1216 can drive the hub 1211 to rotate, thereby realizing the driving of the hub 1211 to rotate by the second power device 122.

[0053] Among them, the axial direction of the driving gear 1221 is parallel to the central axis of the duct wall 111, so as to facilitate the meshing of the driving gear 1221 with the driven gear 1216, and facilitate the driving gear 1221 to drive the driven gear 1216 and the wheel hub 1211 to rotate around the central axis of the duct wall 111.

[0054] It should be noted that the outer diameter of the driven gear 1216 is smaller than the outer diameter of the wheel hub 1211, so as to prevent the driven gear 1216 from rubbing against the ground and wearing when the wheel hub 1211 rolls on the ground.

[0055] Such as Figure 1 As shown, in some embodiments of the present invention, the duct fixture 130 includes: an upper duct fixture 131, the upper duct fixture 131 has a first semi-circular clamping groove that opens towards the central side of the duct wall 111, and the second power device 122 is arranged on the upper duct fixture 131; a lower duct fixture 132, the lower duct fixture 132 has a second semi-circular clamping groove that opens towards the central side of the duct wall 111; wherein, the duct wall 111 is clamped between the first semi-circular clamping groove and the second semi-circular clamping groove.

[0056] Exemplarily, both the upper duct fixture 131 and the lower duct fixture 132 can be configured as arcs, the upper duct fixture 131 forms a first semi-circular clamping groove, the lower duct fixture 132 forms a second semi-circular clamping groove, and the first semi-circular clamping groove and the second semi-circular clamping groove are oppositely opened along the radial direction of the duct wall 111. The upper duct fixture 131 and the lower duct fixture 132 are snap-fitted and fixedly connected to each other in the radial direction of the duct wall 111 to clamp the duct wall 111 between the first semi-circular clamping groove and the second semi-circular clamping groove, and one of the upper duct fixture 131 and the lower duct fixture 132 is connected to the vehicle frame, so as to realize the connection between the compact wheel duct power device 100 and the vehicle frame.

[0057] Among them, by arranging the second power device 122 on the upper duct fixture 131, there is no need to separately arrange an installation structure for the second power device 122, effectively simplifying the structure of the compact wheel duct power device 100, improving the structural compactness of the flight power system 110 and the ground walking power system 120, and being beneficial to realizing the weight reduction and cost reduction of the compact wheel duct power device 100.

[0058] Such as Figure 1As shown, in some embodiments of the present utility model, the upper duct clamp 131 is provided with a fixing portion 1311, and the lower duct clamp 132 is provided with a fixing and cooperating portion 1321. The fixing portion 1311 and the fixing and cooperating portion 1321 can be buckled and cooperated in the radial direction parallel to the duct wall 111. Moreover, opposite hole structures are formed on the fixing portion 1311 and the fixing and cooperating portion 1321. A connecting member can pass through the hole structures on the fixing portion 1311 and the fixing and cooperating portion 1321 to fix the fixing portion 1311 and the fixing and cooperating portion 1321, thereby fixing the upper duct clamp 131 and the lower duct clamp 132 on the outer wall surface of the duct wall 111.

[0059] Wherein, both the fixing portion 1311 and the fixing and cooperating portion 1321 can be configured as square bosses to facilitate the positioning of the upper duct clamp 131 and the lower duct clamp 132. The connecting member can be configured as a threaded connecting member (e.g., a screw or a bolt) or a pin, etc.

[0060] Combined with Figure 1 and Figure 2 , in some embodiments of the present utility model, the duct clamp 130 further includes a mounting seat 133. The mounting seat 133 is provided on the outer side wall of the upper duct clamp 131 and is used for mounting and fixing the second power device 122.

[0061] Specifically, the mounting seat 133 is provided on the outer side wall of the upper duct clamp 131, and the mounting seat 133 is located at the highest point of the arc-shaped bulge of the upper duct clamp 131. The mounting seat 133 is provided with a mounting hole 1332 penetrating along the central axis direction parallel to the duct wall 111. The second power device 122 is embedded in the mounting hole 1332 and fixedly connected to the mounting seat 133 to facilitate the positioning and installation of the second power device 122, which is beneficial to improving the assembly convenience of the second power device 122 and is also beneficial to improving the assembly convenience of the compact wheel duct power device 100.

[0062] Combined with Figure 1 and Figure 2 , in some embodiments of the present utility model, the mounting seat 133 is further provided with a connecting portion 1331. The connecting portion 1331 is used for rotatably connecting with the vehicle frame of the flying car around a first axis. The first axis is provided on the radial outer side of the duct wall 111 and is perpendicular to the central axis of the duct wall 111.

[0063] Specifically, the mounting seat 133 extends from the outer sidewall of the duct upper fixture 131 in a direction perpendicular to the central axis of the duct wall 111. The connecting portion 1331 is provided at one end of the mounting seat 133 away from the duct upper fixture 131, and the connecting portion 1331 is perpendicularly arranged with respect to the mounting seat 133, that is, the connecting portion 1331 is arranged parallel to the central axis of the duct wall 111, and the connecting portion 1331 extends from the mounting seat 133 towards the frame, so as to facilitate the connection between the connecting portion 1331 and the frame.

[0064] Further, a connecting hole 1333 is formed in the connecting portion 1331 and penetrates through the connecting portion 1331 perpendicular to the central axis of the duct wall 111 and the extending direction of the connecting seat. The connecting hole 1333 is used for installing a rotating shaft structure. The connecting portion 1331 is rotatably connected to the frame through the rotating shaft structure, and the central axis of the rotating shaft structure is the first axis. The first axis is located radially outside the duct wall 111, so as to facilitate the rotatable connection between the connecting portion 1331 and the frame. By rotatably connecting the connecting portion 1331 to the frame around the first axis, the attitude of the compact wheel duct power device 100 can be adjusted.

[0065] Wherein, when the compact wheel duct power device 100 rotates through the connecting portion 1331 until the central axis of the compact wheel duct power device 100 (i.e., the central axis of the duct wall 111) is perpendicular to the ground, and at this time the fan 112 is located on the side of the duct wall 111 away from the ground in the axial direction, the compact wheel duct power device 100 is in a flight attitude and can output flight power to realize the flight mode of the flying car; when the compact wheel duct power device 100 rotates through the connecting portion 1331 until the central axis of the compact wheel duct power device 100 is parallel to the ground, that is, when the compact wheel duct device rotates 90° around the first axis relative to the above-mentioned compact wheel duct power device 100 in the flight attitude, the wheel hub 1211 contacts the ground, and the compact wheel duct power device 100 is in a ground attitude and can output ground driving power to realize the ground driving mode of the flying car.

[0066] Combined Figure 1 and Figure 2 , in some embodiments of the present invention, the compact wheel duct power device 100 further includes: a balance auxiliary wheel 140. The balance auxiliary wheel 140 is arranged outside the duct wall 111, and in the axial direction of the duct wall 111, the balance auxiliary wheel 140 is spaced apart from the wheel hub 1211.

[0067] Specifically, in the axial direction of the duct wall 111, the balance auxiliary wheel 140 and the wheel hub 1211 are respectively located on both sides of the duct fixture 130, so that the balance auxiliary wheel 140 and the wheel hub 1211 are arranged at intervals. The balance auxiliary wheel 140 can roll on the ground to play an auxiliary role when the compact wheel duct power device 100 outputs ground driving power, ensure the balance of the compact wheel duct power device 100, prevent the compact wheel duct power device 100 from tilting and affecting the power output effect, and is beneficial to ensuring the stability of the flying car when it is in the ground driving mode.

[0068] The vehicle according to the present invention includes the above-mentioned compact wheel duct power device 100.

[0069] Since the vehicle is provided with the above-mentioned compact wheel duct power device 100, by arranging the hub assembly 121 on the duct wall 111, the second power device 122 is arranged on the duct fixture 130, realizing the integration of the flight power system 110 and the ground walking power system 120, realizing the design of the compact wheel duct power device 100, reducing the space required for arranging the compact wheel duct power device 100, and without the need to separately set the installation structures of the ground walking power system 120 and the flight power system 110, effectively simplifying the structural layout of the flying car and being beneficial to realizing the weight reduction and cost reduction of the flying car.

[0070] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A compact wheel duct power device, characterized in that: include: A flight power system (110), the flight power system (110) comprising a duct wall (111), a fan (112) and a first power device (113), the fan (112) being arranged in the duct wall (111), and the first power device (113) being used to drive the fan (112) to rotate; A ground walking power system (120), the ground walking power system (120) comprising a wheel hub assembly (121) and a second power device (122), the wheel hub assembly (121) being arranged on the duct wall (111) and being coaxially arranged with the duct wall (111), and the wheel hub assembly (121) being located on a side of the duct wall (111) away from the duct lip (114), and the second power device (122) being used for driving the wheel hub assembly (121) to operate; A duct clamp (130), wherein the duct clamp (130) is arranged on the radial outer side of the duct wall (111) and is used to clamp the duct wall (111) in the circumferential direction, and the second power device (122) is arranged on the duct clamp (130).

2. The compact wheel ducted power device according to claim 1, characterized in that: The hub assembly (121) comprises: A wheel hub (1211), the wheel hub (1211) being in power connection with the second power device (122) and configured to roll with the ground; A duct wall bearing intermediate body (1212), wherein the duct wall bearing intermediate body (1212) is arranged at one end of the duct wall (111) away from the duct lip (114) in the axial direction; A needle roller bearing (1213) is rollingly disposed on the duct wall bearing intermediate body (1212) and supported between the wheel hub (1211) and the duct wall bearing intermediate body (1212).

3. The compact wheel ducted power device according to claim 2, characterized in that: The wheel hub assembly (121) further comprises: a duct wall bearing intermediate body retaining ring (1214), wherein the duct wall bearing intermediate body retaining ring (1214) is arranged on the duct wall bearing intermediate body (1212), is located on the outside of the needle roller bearing (1213), and is used for limiting cooperation with the needle roller bearing (1213).

4. The compact wheel ducted power device according to claim 2, characterized in that: The wheel hub assembly (121) further comprises: a wheel hub retaining ring (1215), wherein the wheel hub retaining ring (1215) is arranged at an axial end of the wheel hub (1211) away from the second power device (122) and is used for limiting cooperation with the wheel hub (1211).

5. The compact wheel ducted power device according to claim 2, characterized in that: The second power device (122) is provided with a driving gear (1221), and the outer periphery of the wheel hub (1211) is provided with a driven gear (1216), and the driving gear (1221) is meshed with the driven gear (1216) to drive the wheel hub (1211) to rotate; Wherein, the axial direction of the driving gear (1221) is parallel to the central axis of the duct wall (111).

6. The compact wheel ducted power device according to claim 1, characterized in that: The duct clamp (130) comprises: A duct upper clamp (131), the duct upper clamp (131) having a first semicircular clamp groove open to one side of the center of the duct wall (111), and the second power device (122) is arranged on the duct upper clamp (131); A duct lower clamp (132), the duct lower clamp (132) having a second semicircular clamping groove open toward a central side of the duct wall (111); Wherein, the duct wall (111) is clamped between the first semicircular clamping groove and the second semicircular clamping groove.

7. The compact wheel ducted power device according to claim 6, characterized in that: The duct clamp (130) further comprises a mounting seat (133), wherein the mounting seat (133) is arranged on the outer side wall of the duct upper clamp (131) and is used for mounting and fixing the second power device (122).

8. The compact wheel ducted power device according to claim 7, characterized in that: The mounting seat (133) is further provided with a connecting portion (1331), and the connecting portion (1331) is used to be rotatably connected to the frame of the flying car around a first axis, and the first axis is arranged radially outside the duct wall (111) and is perpendicular to the central axis of the duct wall (111).

9. The compact wheel ducted power device according to claim 1, characterized in that: Also includes: A balancing auxiliary wheel (140) is provided on the outside of the duct wall (111), and in the axial direction of the duct wall (111), the balancing auxiliary wheel (140) and the wheel hub (1211) are spaced apart.

10. A flying car, characterized in that: Comprising a compact wheel ducted power unit according to any one of claims 1-9.

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