Propeller arrangement for an airborne vehicle

Abstract

A propeller device of an air mobile tool includes a hub, a plurality of wings connected to the hub, a rotating shaft transmitting a rotating force to the hub to rotate the hub and the wings, a first moving part and a second moving part provided to independently move up and down on the rotating shaft, a first link assembly connecting the first moving part and the plurality of wings and rotating the plurality of wings to implement a pitch operation when the first moving part moves up and down, and a second link assembly connecting the second moving part and the plurality of wings and rotating the plurality of wings to implement a folding or unfolding operation when the second moving part moves up and down. The propeller device of the air mobile tool according to the present invention unfolds or folds the wings according to a flight state of the air mobile tool, and improves energy efficiency and increases a flight distance by effectively using the wings in each flight situation. In addition, the pitch operation is implemented in addition to the unfolding or folding operation of the wings, and thus flight performance is secured.

Description

TECHNICAL FIELD

[0001] The present application relates to a propeller device of an air mobile tool, and more particularly, to a propeller device of an air mobile tool that unfolds or folds a wing according to a flight state. BACKGROUND

[0002] In recent years, air mobile tools that can be used in various fields such as cargo containers and medical transport are being developed, and the energy efficiency and stability of the flight mobile tools are improved and enter the practical stage.

[0003] Such an air mobile tool flies by the operation of a propeller, thereby achieving vertical takeoff and landing. However, in the vertical takeoff and landing of the air mobile tool, a larger thrust and more propellers than in the flight state are required to be used. On the other hand, when the air mobile tool enters the flight state, it can fly by the lift of the wing, and thus some of the propellers used in the vertical takeoff and landing do not need to be operated. In particular, when the air mobile tool enters high-speed flight, the propeller causes air resistance, which results in energy loss in flight.

[0004] Therefore, there is a need for a technology for an air mobile tool to selectively unfold or fold a propeller according to a flight state.

[0005] The contents described in the above background technology are only to strengthen the understanding of the background of the present application, and should not be interpreted as recognizing the prior art known to those skilled in the art to which the present application belongs.

[0006] Prior Art Documents

[0007] Patent Documents

[0008] (Patent Document 1) KR 10-2020-0104582A (2020.09.04) SUMMARY

[0009] (I) Technical Problem to be Solved

[0010] The present application is proposed to solve the above problems, and aims to provide a propeller device of an air mobile tool that unfolds or folds a wing according to a flight state of the air mobile tool, improves energy efficiency and increases flight distance by effectively using the wing in various flight conditions of the air mobile tool.

[0011] (II) Technical Solution

[0012] A propeller device of an air mobile tool according to the present application for achieving the above object includes: a hub; a plurality of wings connected to the hub; a rotating shaft transmitting a rotating force to the hub to rotate the hub and the wings; a first moving part and a second moving part provided to move up and down on the rotating shaft independently; a first link assembly connecting the first moving part and the plurality of wings and rotating the plurality of wings in place to achieve a pitch operation when the first moving part moves up and down; and a second link assembly connecting the second moving part and the plurality of wings and moving the plurality of wings to rotate to achieve a folding or unfolding operation when the second moving part moves up and down.

[0013] The propeller device of an air mobile tool according to the present application is characterized in that the wings are rotatably connected to the hub through a connection part, and the first link assembly and the second link assembly are rotatably connected to different positions of the connection part.

[0014] The propeller device of an air mobile tool according to the present application is characterized in that the connection part is combined with the wings, and the connection part is rotatably installed on the hub with a vertical axis as a reference.

[0015] The propeller device of an air mobile tool according to the present application is characterized in that the first link assembly includes: a first connection link rotatably connected to the first moving part; a second connection link combined to the wings and rotatably connected to the connection part; and a third connection link rotatably connected to the first connection link and the second connection link.

[0016] The propeller device of an air mobile tool according to the present application is characterized in that the first connection link is rotatably installed on the first moving part with a vertical axis as a reference, the second connection link is rotatably connected to the connection part with a horizontal axis as a reference, and the third connection link is rotatably connected to the first connection link and the second connection link with a horizontal axis as a reference.

[0017] The propeller device of an air mobile tool according to the present application is characterized in that, when the first moving part moves up and down, the first connection link and the third connection link move along an up-and-down direction together with the first moving part to rotate the second connection link, so that the wings connected to the second connection link rotate at the connection part to change a pitch of the wings.

[0018] The propeller device of an air mobile tool according to the present application is characterized in that the second link assembly includes: a fixed link installed on the rotating shaft; a first rotating link rotatably connected to the connection part; a second rotating link rotatably connected to the second moving part and the first rotating link; and a third rotating link rotatably connected to the fixed link and the second rotating link.

[0019] The propeller device of the air mobile tool according to the present application is characterized in that the first rotary link further includes a first additional link rotatably connected to the connecting portion with the vertical axis as a reference, and a second additional link rotatably connected to one end of the first additional link with the horizontal axis as a reference and to the other end of the second rotary link with the vertical axis as a reference.

[0020] The propeller device of the air mobile tool according to the present application is characterized in that the fixed link is positioned above the second moving portion, and the second moving portion moves in the vertical direction on the lower side of the fixed link.

[0021] The propeller device of the air mobile tool according to the present application is characterized in that the second rotary link is longer than the third rotary link.

[0022] The propeller device of the air mobile tool according to the present application is characterized in that, when the second moving portion moves up and down, the second connecting link rotates to be retracted or expanded with respect to the rotary axis since the second connecting link is supported by the third connecting link, so that the connecting portion connected to the hub rotates to change the position of the wing.

[0023] The propeller device of the air mobile tool according to the present application is characterized in that an auxiliary hub having the same shape as the hub is provided in the first moving portion, and the first link assembly is connected to the hub and the auxiliary hub.

[0024] The propeller device of the air mobile tool according to the present application is characterized in that the second moving portion includes an upper slider and a lower slider moving up and down together on the rotary axis, the upper slider and the lower slider are spaced apart on the upper side and the lower side of the first moving portion, and the upper slider and the lower slider are connected to each other by a connecting shaft passing through the first moving portion.

[0025] The propeller device of the air mobile tool according to the present application is characterized in that the second link assembly is rotatably connected to the upper slider and the wing.

[0026] The propeller device of the air mobile tool according to the present application is characterized in that one of the plurality of wings is connected to the first moving portion by the first link assembly, and the remaining wings are connected to the first moving portion and the second moving portion by the first link assembly and the second link assembly.

[0027] (Three) beneficial effects

[0028] The propeller device of the air mobile tool having the above-described configuration according to the present application expands or folds the wing according to the flight state of the air mobile tool, improves energy efficiency by effectively using the wing in various flight conditions, and increases the flight distance. In addition, the pitch operation is also achieved in addition to the expansion or folding operation of the wing, so that the flight performance is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 FIG. 1 is a diagram showing a propeller device of an air mobile tool according to the present application.

[0030] Figure 2 FIG. 2 is a diagram for explaining a propeller device of an air mobile tool shown in FIG. 1. Figure 1

[0031] Figures 3-4 FIG. 3 is a diagram for explaining a longitudinal swing operation of a wing.

[0032] Figure 5 FIG. 4 is a diagram for explaining an unfolding or folding operation of a wing.

[0033] Figure 6 FIG. 5 is a diagram showing a propeller device of an air mobile tool according to the present application, Figure 1

[0034] BRIEF DESCRIPTION OF DRAWINGS

[0035] 10: hub 20: wing

[0036] 30: rotating shaft 40: first moving part

[0037] 41: auxiliary hub 50: second moving part

[0038] 51: upper slider 52: lower slider

[0039] 53: connecting shaft 60: first link assembly

[0040] 61: first connecting link 62: second connecting link

[0041] 63: third connecting link 70: second link assembly

[0042] 71: fixed link 72: first rotating link

[0043] 72a: first additional link 72b: second additional link

[0044] 73: second rotating link 74: third rotating link

[0045] 80: connecting part DETAILED DESCRIPTION

[0046] Hereinafter, a propeller device of an air mobile tool according to a preferred embodiment of the present application will be described with reference to the accompanying drawings.

[0047] Figure 1 FIG. 1 is a diagram showing a propeller device of an air mobile tool according to the present application, Figure 2 FIG. 2 is a diagram for explaining a propeller device of an air mobile tool shown in FIG. 1. Figure 1 FIG. 5 is a diagram showing a propeller device of an air mobile tool according to the present application,​​Figures 3-4 It is a diagram used to illustrate the yaw operation of an aircraft wing. Figure 5 It is a diagram used to illustrate the deployment or folding operation of an aircraft wing. Figure 6 It is used for explanation Figure 1 A diagram of the propeller assembly of an aerial mobile vehicle.

[0048] like Figures 1-2 As shown, the propeller device for an air mobility vehicle according to the present invention includes: a hub 10; a plurality of wings 20 connected to the hub 10; a rotation shaft 30 that transmits rotational force to the hub 10 to rotate the hub 10 and the wings 20; a first moving part 40 and a second moving part 50 configured to move independently up and down on the rotation shaft 30; a first linkage assembly 60 connecting the first moving part 40 and the plurality of wings 20, and causing the plurality of wings 20 to rotate in place to achieve a yaw operation when the first moving part 40 moves up and down; and a second linkage assembly 70 connecting the second moving part 50 and the plurality of wings 20, and causing the plurality of wings 20 to rotate and move to achieve a folding or unfolding operation when the second moving part 50 moves up and down.

[0049] This invention can be installed on the fuselage or wing side of an aerial mobility vehicle, and the rotation shaft 30 can be connected to the drive motor M. The wing 20 rotates together with the rotation shaft 30 and the hub 10 through the rotational force transmitted from the drive motor M to generate thrust, thereby enabling the aerial mobility vehicle to fly. Furthermore, the structure of this invention can be installed in an inverted configuration.

[0050] Thus, the rotating shaft 30 is connected to the drive motor M to rotate by receiving the rotational force of the drive motor M, and the hub 10 connected to the rotating shaft 30 and the plurality of wings 20 connected to the hub 10 also rotate together with the rotating shaft 30.

[0051] Here, a first moving part 40 and a second moving part 50 that move independently up and down are provided on the rotation axis 30, and the first moving part 40 and the second moving part 50 are respectively connected to the wing 20 via a first linkage assembly 60 and a second linkage assembly 70. That is, when the first moving part 40 moves up and down, the wing 20 rotates in place via the first linkage assembly 60 to achieve yaw operation, thus enabling attitude control of the aerial mobility vehicle. When the second moving part 50 moves up and down, the wing 20 rotates via the second linkage assembly 70 to achieve folding or unfolding operation, thus allowing the wing 20 to be housed in or unfolded from the aerial mobility vehicle.

[0052] Here, the first moving part 40 and the second moving part 50 can be operated by a rotary actuator or a linear actuator respectively, and can also be connected to a separate control lever for up and down movement.

[0053] The above-described present application will be described in detail, the wing 20 can be rotatably connected to the hub 10 through the connecting portion 80, and the first linkage assembly 60 and the second linkage assembly 70 can be rotatably connected to different positions of the connecting portion 80.

[0054] As shown in Figure 2 , the connecting portion 80 is rotatably mounted on the hub 10, and the wing 20 is rotatably connected to the connecting portion 80. In addition, the first linkage assembly 60 and the second linkage assembly 70 are rotatably connected to different positions of the connecting portion 80. Therefore, the wing 20 can be mounted on the hub 10 through the connecting portion 80, and when the first moving portion 40 moves up and down, the wing 20 rotates in place through the first linkage assembly 60, or when the second moving portion 50 moves up and down, the second linkage assembly 70 directly rotates the connecting portion 80 to make the wing 20 rotate and move.

[0055] Therefore, the connecting portion 80 can be formed in a vertically curved shape to connect the first linkage assembly 60 and the second linkage assembly 70 to different positions of the connecting portion 80, and the wing 20 can be rotatably connected to the vertical portion 81 of the connecting portion 80 with the horizontal axis as the reference together with the first linkage assembly 60, and the connecting portion 80 can be rotatably mounted on the hub 10 through the horizontal portion 82 with the vertical axis as the reference, and the second linkage assembly 70 can be rotatably connected to the connecting portion 80 with the vertical axis as the reference.

[0056] In this way, the wing 20, the first linkage assembly 60 and the second linkage assembly 70 are connected through the connecting portion 80 mounted on the hub 10, so that the attitude and position adjustment of the wing 20 can be performed according to the up and down movement of the first moving portion 40 and the second moving portion 50 respectively.

[0057] Next, each configuration will be described in detail according to the attitude control and rotational position adjustment of the wing 20.

[0058] The first linkage assembly 60 for controlling the attitude of the wing 20 includes a first connecting link 61 rotatably connected to the first moving portion 40, a second connecting link 62 coupled to the wing 20 and rotatably connected to the connecting portion 80, and a third connecting link 63 rotatably connected to the first connecting link 61 and the second connecting link 62.

[0059] As shown in Figure 2 , in the first linkage assembly 60, the first connecting link 61, the second connecting link 62 and the third connecting link 63 are rotatably connected respectively, and when the first moving portion 40 moves up and down, the wing 20 rotates in place at the connecting portion 80 to realize the pitch operation.

[0060] Therefore, the first connecting rod 61 is rotatably mounted on the first moving part 40 with respect to the vertical axis, the second connecting rod 62 is rotatably connected to the connecting part 80 with respect to the horizontal axis, and the third connecting rod 63 is rotatably connected to the first connecting rod 61 and the second connecting rod 62 with respect to the horizontal axis. In this invention, each rod can be rotatably connected via a hinge structure. Thus, a rotatable direction is set for the first connecting rod 61, the second connecting rod 62, and the third connecting rod 63 respectively. Therefore, when the first moving part 40 moves up and down, the first connecting rod 61, the second connecting rod 62, and the third connecting rod 63 can be operated in combination to perform up and down movement, thereby enabling the yaw operation of the wing 20.

[0061] That is, when the first moving part 40 moves up and down, the first connecting link 61 and the third connecting link 63 move together with the first moving part 40 in the vertical direction to rotate the second connecting link 62, thereby causing the wing 20 connected to the second connecting link 62 to rotate at the connecting part 80 to change the pitch of the wing 20. At this time, the vertical position of the first moving part 40 is determined according to the attitude control of the wing 20 and can be controlled by a separate controller.

[0062] like Figure 3 As shown, when the first moving part 40 moves upward, the third connecting link 63 moves upward together with the first connecting link 61 connected to the first moving part 40. At this time, as the second connecting link 62 connected to the third connecting link 63 rotates at the connecting part 80, the wing 20 attached to the connecting part 80 rotates upward.

[0063] On the contrary, such as Figure 4 As shown, when the first moving part 40 moves downward, the third connecting link 63 moves downward together with the first connecting link 61 connected to the first moving part 40. At this time, as the second connecting link 62 connected to the third connecting link 63 rotates at the connecting part 80, the wing 20 attached to the connecting part 80 rotates downward.

[0064] As described above, in this invention, the yaw rate of the wing 20 can be adjusted by moving the first moving part 40 up and down.

[0065] On the other hand, the second linkage assembly 70 for controlling the rotational position of the wing 20 includes: a fixed linkage 71 mounted on the rotation shaft 30; a first rotating linkage 72 rotatably connected to the connecting part 80; a second rotating linkage 73 rotatably connected to the second moving part 50 and the first rotating linkage 72; and a third rotating linkage 74 rotatably connected to the fixed linkage 71 and the second rotating linkage 73.

[0066] like Figure 2As shown, in the second link assembly 70, the fixed link 71, the first rotating link 72, the second rotating link 73, and the third rotating link 74 are rotatably connected, respectively, and when the second moving part 50 moves up and down, the connecting part 80 rotates at the hub 10, so that the wing 20 moves in rotation with the connecting part 80 to implement the folding or unfolding operation.

[0067] Here, the fixed link 71, the second rotating link 73, and the third rotating link 74 are rotatably connected with reference to a horizontal axis, the first rotating link 72 is rotatably connected to the connecting part 80 with reference to a vertical axis, and the second rotating link 73 is rotatably connected with reference to a horizontal axis. The first rotating link 72 can further include a first additional link 72a rotatably connected to the connecting part 80 with reference to a vertical axis, and a second additional link 72b having one end rotatably connected to the first additional link 72a with reference to a vertical axis and the other end rotatably connected to the second rotating link 73 with reference to a horizontal axis. Accordingly, the first additional link 72a can be formed to extend a predetermined length, and the second additional link 72b can be formed to be vertically bent. Accordingly, when the second rotating link 73 rotates as the second moving part 50 moves up and down, the second additional link 72b of the first rotating link 72 is linked to the second rotating link 73 to move in a direction away from or close to the rotating shaft 30. At the same time, the first additional link 72a rotates by the movement of the second additional link 72b in a state of being connected to the connecting part 80, and the connecting part 80 rotates by the rotation of the first additional link 72a, thereby changing the rotational position of the wing 20.

[0068] Meanwhile, the fixed link 71 is located above the second moving part 50, and the second moving part 50 can move in the up-and-down direction on the lower side of the fixed link 71. In addition, the second rotating link 73 can be longer than the third rotating link 74. Accordingly, when the second moving part 50 moves up and down, since the second rotating link 73 is supported by the third rotating link 74, it can be operated in the unfolded or retracted form.

[0069] As described above, when the second moving part 50 moves up and down, since the second rotating link 73 is supported by the third rotating link 74, the second rotating link 73 rotates to be retracted or unfolded with respect to the rotating shaft 30, so that the connecting part 80 connected to the first rotating link 72 rotates with respect to the hub 10 to change the rotational position of the wing 20. At this time, the up-and-down position of the second moving part 50 is determined according to the rotational position of the wing 20, and can be controlled by a separate controller.

[0070] As Figure 3As shown, when the second moving part 50 moves upward, since the second rotating link 73 connected to the second moving part 50 is supported by the third rotating link 74, the second rotating link 73 rotates in a clockwise direction and the third rotating link 74 rotates in a counterclockwise direction. Thereby, the second rotating link 73 performs an unfolding operation, and the first rotating link 72 connected to the second rotating link 73 rotates the connecting part 80 installed on the hub 10. Thereby, the wing 20 combined to the connecting part 80 moves in a rotating direction along the unfolding.

[0071] On the contrary, as shown in FIG. 6, when the second moving part 50 moves downward, since the second rotating link 73 connected to the second moving part 50 is supported by the third rotating link 74, the second rotating link 73 rotates in a counterclockwise direction and the third rotating link 74 rotates in a clockwise direction. Thereby, the second rotating link 73 performs a folding operation, and the first rotating link 72 connected to the second rotating link 73 rotates the connecting part 80 installed on the hub 10. Thereby, the wing 20 combined to the connecting part 80 moves in a rotating direction along the folding. Figure 5

[0072] Meanwhile, the auxiliary hub 41 formed in the same shape as the hub 10 is provided in the first moving part 40, and the first link assembly 60 can be connected to the hub 10 and the auxiliary hub 41. In this way, the auxiliary hub 41 having the same shape as the hub 10 is provided in the first moving part 40, so that the first link assembly 60 can be stably provided in the up-and-down direction with respect to the wings 20 installed along the circumference of the hub 10.

[0073] The second moving part 50 can include an upper slider 51 and a lower slider 52 moving together in the up-and-down direction on the rotating shaft 30, the upper slider 51 and the lower slider 52 being provided apart from each other on the upper side and the lower side of the first moving part 40, and the upper slider 51 and the lower slider 52 being connected to each other by a connecting shaft 53 passing through the first moving part 40. Here, the second link assembly 70 can be rotatably connected to the upper slider 51 and the wing 20. That is, the second moving part 50 includes the lower slider 52 moving up and down by a rotary actuator or a linear actuator, the upper slider 51 combined to the lower slider 52 to move up and down together with the lower slider by the connecting shaft 53, and connected to the second link assembly 70. In this way, by dividing the second moving part 50 into the upper slider 51 and the lower slider 52, interference between the second link assembly 70 and other parts can be minimized. In addition, the lower slider 52 and the upper slider 51 are connected by the connecting shaft 53 passing through the first moving part 40, so that the packaging volume is reduced.

[0074] ​On the other hand, one wing 20a of the plurality of wings 20 can be connected to the first moving part 40 through the first link assembly 60, and the remaining wings 20b can be connected to the first moving part 40 and the second moving part 50 through the first link assembly 60 and the second link assembly 70.

[0075] As described above, all of the plurality of wings 20 are connected to the first moving part 40 through the first link assembly 60, and thus all of the wings 20 can perform the pitch operation. Among them, the remaining wings 20b except for one wing 20a are connected to the second moving part 50 through the second link assembly 70, and thus the remaining wings 20b can be moved in rotation toward the fixed one wing 20a to perform the folding or unfolding operation. For example, as shown in FIG. 2, one wing 20a of the three wings 20 is connected to the first link assembly 60 and the first moving part 40, and thus only the pitch operation is performed, and the remaining wings 20b are connected to the first moving part 40 and the second moving part 50 through the first link assembly 60 and the second link assembly 70, and thus the pitch operation and the unfolding or folding operation according to the change in the rotational position can be performed. Figure 6

[0076] The propeller device of the air mobile tool having the above-described structure unfolds or folds the wings according to the flight state of the air mobile tool, and thus improves the energy efficiency and increases the flight distance by effectively using the wings in various flight conditions. In addition, the pitch operation is also performed in addition to the unfolding or folding operation of the wings, and thus the flight performance is secured.

[0077] Although the present application has been shown and described with respect to particular embodiments thereof, it will be apparent to those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the present application provided in the claims.​

Claims

1. A propeller device for an aerial mobility vehicle, comprising: Wheel hub; Multiple wings, connected to wheel hubs; The rotating shaft transmits rotational force to the hub to rotate the hub and the wing; The first and second moving parts are configured to move up and down independently on the rotation axis; The first linkage assembly connects the first moving part and multiple wings, and when the first moving part moves up and down, it causes the multiple wings to rotate in place to achieve yaw operation; as well as The second linkage assembly connects the second moving part and multiple wings, and when the second moving part moves up and down, it causes the multiple wings to rotate and move to achieve folding or unfolding operations. The feature is that one of the multiple wings is connected to the first moving part via a first linkage assembly, and the remaining wings are connected to the first moving part and the second moving part via a first linkage assembly and a second linkage assembly.

2. The propeller device of the aerial mobile tool according to claim 1, characterized in that, The wing is rotatably connected to the hub via a connecting part, and the first link assembly and the second link assembly are rotatably connected to different positions of the connecting part.

3. The propeller device of the aerial mobile tool according to claim 2, characterized in that, The connecting part is integrated with the wing, and the connecting part is rotatably mounted on the hub with reference to the vertical axis.

4. The propeller device of the aerial mobile tool according to claim 2, characterized in that, The first link assembly includes: The first connecting link is rotatably connected to the first moving part; The second connecting rod is attached to the wing and rotatably connected to the connecting part; and The third connecting link is rotatably connected to the first connecting link and the second connecting link.

5. The propeller device of the aerial mobile tool according to claim 4, characterized in that, The first connecting rod is rotatably mounted on the first moving part with respect to the vertical axis. The second connecting rod is rotatably connected to the connecting part with the horizontal axis as a reference. The third connecting link is rotatably connected to the first connecting link and the second connecting link with respect to the horizontal axis.

6. The propeller device of the aerial mobile tool according to claim 4, characterized in that, When the first moving part moves up and down, the first connecting rod and the third connecting rod move together with the first moving part in the up and down direction to rotate the second connecting rod, so that the wing connected to the second connecting rod rotates at the connection to change the wing's pitch.

7. The propeller device of the aerial mobile tool according to claim 2, characterized in that, The second link assembly includes: A fixed connecting rod is mounted on the rotating shaft; The first rotating link is rotatably connected to the connecting part; The second rotating link is rotatably connected to the second moving part and the first rotating link; and The third rotating link is rotatably connected to the fixed link and the second rotating link.

8. The propeller device of the aerial mobile tool according to claim 7, characterized in that, The first rotating link further includes: The first additional link is rotatably connected to the connecting part with respect to the vertical axis; and The second additional link has one end rotatably connected to the first additional link with respect to the vertical axis, and the other end rotatably connected to the second rotating link with respect to the horizontal axis.

9. The propeller device of the aerial mobile tool according to claim 7, characterized in that, The fixed link is located above the second moving part, and the second moving part moves vertically below the fixed link.

10. The propeller device of the aerial mobility tool according to claim 7, characterized in that, The second rotating link extends longer than the third rotating link.

11. The propeller device of the aerial mobility tool according to claim 7, characterized in that, When the second moving part moves up and down, the second connecting link is supported by the third connecting link, so the second connecting link rotates to retract or extend relative to the rotation axis, thereby rotating the connecting part connected to the hub to change the position of the wing.

12. The propeller device of the aerial mobile tool according to claim 1, characterized in that, An auxiliary wheel hub, which is formed in the same shape as the wheel hub, is provided in the first moving part, and a first link assembly is connected to the wheel hub and the auxiliary wheel hub.

13. The propeller device of the aerial mobility tool according to claim 1, characterized in that, The second moving part includes an upper slider and a lower slider that move up and down together on a rotating shaft. The upper slider and the lower slider are spaced apart on the upper and lower sides of the first moving part, and the upper slider and the lower slider are connected to each other by a connecting shaft that passes through the first moving part.

14. The propeller device of the aerial mobility tool according to claim 13, characterized in that, The second linkage assembly is rotatably connected to the upper slider and the wing.

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