Antenna folding mechanism and unmanned aerial vehicle

Abstract

The application discloses an antenna folding mechanism and a UAV, and relates to the technical field of UAV structures, wherein the antenna folding mechanism comprises a fixed end and a moving assembly, the moving assembly comprises a columnar structure, a cylindrical shell and a limiting structure; the cylindrical shell is fixedly connected to the outside of the columnar structure, and the inside of the cylindrical shell contains an antenna assembly; one end of the columnar structure is movably connected with the fixed end, the butt joint edge of the columnar structure and the fixed end is provided with a first guide groove, and the butt joint edge of the fixed end and the columnar structure is provided with a second guide groove matched with the first guide groove; the limiting structure is sleeved in the inside of the columnar structure; the limiting structure is fixedly connected with the fixed end through a screw; the outer wall of the limiting structure is provided with a long strip protrusion extending along the axial direction; the inner wall of the columnar structure is provided with a limiting groove matched with the long strip protrusion; when the cylindrical shell drives the columnar structure to rotate, the long strip protrusion and the limiting groove are matched to limit the columnar structure and the cylindrical shell at a preset position.

Description

Technical Field

[0001] This application relates to the field of unmanned aerial vehicle (UAV) structural technology, and in particular to an antenna folding mechanism and a UAV. Background Technology

[0002] In recent years, drone technology has developed rapidly and has been widely used in military reconnaissance, logistics transportation, agricultural plant protection, emergency communications, and other fields. As a core component of drone communication systems, antenna performance directly affects the stability of data transmission, the reliability of control signals, and the efficiency of mission execution. However, there are still significant engineering contradictions in the current design of drone antenna fixing and storage. For example, while bolt-locking or snap-on antenna installation methods can ensure mechanical stability during flight (such as vibration and wind resistance), they often require disassembly or occupy a large space during storage, reducing the portability of the drone. Flexible antennas or simple hinged folding designs can reduce storage volume, but they are prone to deformation or loosening in high-speed flight or complex airflow environments, leading to signal attenuation or even communication interruption. In other words, there is a conflict between antenna fixing and storage in current technology: good antenna fixing results in inconvenient storage, and vice versa. Therefore, how to design an antenna folding mechanism that is simple in structure, easy to operate, reliable in connection, and convenient to store is a technical problem that urgently needs to be solved in the current drone and other related fields. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an antenna folding mechanism and a drone that can simultaneously meet the needs of antenna fixing and antenna storage.

[0004] An antenna folding mechanism according to a first aspect of this application includes a fixed end and a movable component. The movable component includes a columnar structure, a cylindrical shell, and a limiting structure. The cylindrical shell is fixedly connected to the outside of the columnar structure, and an antenna assembly is housed inside the cylindrical shell. One end of the columnar structure is movably connected to the fixed end. A first guide groove is provided at the mating edge between the columnar structure and the fixed end, and a second guide groove is provided at the mating edge between the fixed end and the columnar structure, which cooperates with the first guide groove. The limiting structure is sleeved inside the columnar structure. The limiting structure is fixedly connected to the fixed end by screws. An axially extending elongated protrusion is provided on the outer wall of the limiting structure. A limiting groove cooperating with the elongated protrusion is provided on the inner wall of the columnar structure. When the cylindrical shell drives the columnar structure to rotate, the cooperation between the elongated protrusion and the limiting groove limits the columnar structure and the cylindrical shell to a preset position.

[0005] The antenna folding mechanism according to the embodiments of this application has at least the following beneficial effects: The antenna folding mechanism ensures precise and controllable movement trajectory of the moving component during unfolding and folding by cooperating with the first guide groove of the columnar structure in the moving component and the corresponding second guide groove of the fixed end, effectively preventing misalignment. The design of the elongated protrusion corresponding to the limiting structure in the moving component and the limiting groove corresponding to the columnar structure provides dual positioning protection, ensuring the antenna component is stable in the unfolded state and easy to store in the folded state. The interference fit design of the limiting groove and the elongated protrusion effectively suppresses fretting wear caused by flight vibration. This antenna folding mechanism is particularly suitable for UAV communication systems that require frequent folding and storage, significantly improving the portability and reliability of the device while ensuring signal quality.

[0006] According to some embodiments of this application, the limiting structure is provided with two parallel elongated protrusions.

[0007] According to some embodiments of this application, square grooves are provided between the elongated protrusions, and the square grooves are evenly distributed along the length direction of the elongated protrusions. The square grooves are used to store lubricating grease.

[0008] According to some embodiments of this application, the limiting groove includes a first groove, a second groove, and a third groove; when the antenna assembly is in the open state, the elongated protrusion is clamped in the first groove and the elongated protrusion is clamped in the third groove; the elongated protrusion disengages from the second groove.

[0009] According to some embodiments of this application, when the antenna assembly is in a folded state, the elongated protrusion is clamped in the second groove and the elongated protrusion is clamped in the third groove; the elongated protrusion disengages from the first groove.

[0010] According to some embodiments of this application, when the antenna assembly is adjusted from the folded state to the open state, the cylindrical housing drives the columnar structure to rotate along the first direction, the second groove disengages from the elongated protrusion, and the third groove disengages from the elongated protrusion;

[0011] When the antenna assembly is adjusted from the open state to the folded state, the cylindrical shell drives the columnar structure to rotate along the second direction, the first groove disengages from the elongated protrusion, and the third groove disengages from the elongated protrusion; the first direction and the second direction are opposite to each other.

[0012] According to some embodiments of this application, the antenna folding mechanism is fixedly mounted on the corresponding vertical tail of the UAV via the end of the fixed end that is away from the columnar structure.

[0013] According to some embodiments of this application, the antenna assembly includes a main antenna component and an extension antenna component integrally connected to the main antenna component; after the main antenna component is embedded inside the cylindrical housing, the extension antenna component extends out from the cylindrical housing, passes through a pre-set wiring channel inside the vertical tail, and then extends along the wiring groove inside the tail beam to connect to the radio frequency connection interface of the fuselage.

[0014] According to some embodiments of this application, a tail rotor is also installed on the side of the vertical tail away from the antenna folding mechanism. The tail rotor has a preset tilt angle. The horizontal component of the tail rotor generated by the preset tilt angle is used to balance the anti-torque of the main rotor, and the vertical component of the tail rotor generated by the preset tilt angle is used to provide additional lift.

[0015] The drone according to a second aspect of this application includes: an antenna folding mechanism according to a first aspect of this application.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the antenna folding mechanism in its disassembled state according to an embodiment of this application;

[0019] Figure 2 This is another schematic diagram of the antenna folding mechanism in the disassembled state according to an embodiment of this application;

[0020] Figure 3 for Figure 1 A schematic diagram of the moving component of the antenna folding mechanism is shown;

[0021] Figure 4 for Figure 1 A schematic diagram showing the composite of the moving components of the antenna folding mechanism;

[0022] Figure 5 This is a schematic diagram of the connection between the antenna folding mechanism and the drone according to an embodiment of this application;

[0023] Figure 6 This is another schematic diagram showing the connection between the antenna folding mechanism and the drone in an embodiment of this application.

[0024] Figure label:

[0025] Fixed end 100; moving component 200; columnar structure 201; cylindrical structure 202; limiting structure 203; first guide groove 2014; second guide groove 1001; screw 300; elongated protrusion 2031; square groove 2032; first groove 2011; second groove 2012; third groove 2013; vertical tail 400; tail beam 500; tail rotor 600; wherein, the moving component 200 includes columnar structure 201, cylindrical structure 202, and limiting structure 203. Detailed Implementation

[0026] The embodiments of this application are described in detail below. Examples of the embodiments are shown 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 are only used to explain this application, and should not be construed as limiting this application.

[0027] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0028] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0030] In recent years, drone technology has developed rapidly and has been widely used in military reconnaissance, logistics transportation, agricultural plant protection, emergency communications, and other fields. As a core component of drone communication systems, antenna performance directly affects the stability of data transmission, the reliability of control signals, and the efficiency of mission execution. However, there are still significant engineering contradictions in the current design of drone antenna fixing and storage. For example, while bolt-locking or snap-fit ​​antenna installation methods can ensure mechanical stability during flight (such as vibration and wind resistance), they often require disassembly or occupy a large space during storage, reducing the portability of the drone. Flexible antennas or simple hinged folding designs can reduce storage volume, but they are prone to deformation or loosening in high-speed flight or complex airflow environments, leading to signal attenuation or even communication interruption. In other words, there is a conflict between antenna fixing and storage in the current technology: good antenna fixing results in inconvenient antenna storage, and vice versa. Currently, it is impossible to simultaneously achieve both antenna stability and easy storage when installing antennas on drones.

[0031] It is understood that the antenna folding mechanism of this application embodiment includes a fixed end 100 and a moving component 200. The moving component 200 includes a columnar structure 201, a cylindrical shell 202, and a limiting structure 203. The cylindrical shell 202 is fixedly connected to the outside of the columnar structure 201, and the antenna component is housed inside the cylindrical shell 202. One end of the columnar structure 201 is movably connected to the fixed end 100. The mating edge of the columnar structure 201 and the fixed end 100 is provided with a first guide groove 2014, and the mating edge of the fixed end 100 and the columnar structure 201 is provided with a first guide groove 2014. A second guide groove 1001 is provided to cooperate with a guide groove 2014; the limiting structure 203 is sleeved inside the columnar structure 201; the limiting structure 203 is fixedly connected to the fixed end 100 by screws 300; the outer wall of the limiting structure 203 is provided with an axially extending elongated protrusion 2031; the inner wall of the columnar structure 201 is provided with a limiting groove that cooperates with the elongated protrusion 2031; when the cylindrical shell 202 drives the columnar structure 201 to rotate, the cooperation between the elongated protrusion and the limiting groove limits the columnar structure 201 and the cylindrical shell 202 to a preset position.

[0032] For example, such as Figure 1 and Figure 2The antenna folding mechanism shown includes a fixed end 100 and a moving component 200. The moving component 200 includes a columnar structure 201, a cylindrical shell 202, and a limiting structure 203. The cylindrical shell 202 is fixedly connected to the outside of the columnar structure 201, and the antenna assembly is placed inside the cylindrical shell 202. A first guide groove 2014 is provided at the mating edge between the columnar structure 201 and the fixed end 100, and a second guide groove 1001 is provided at the mating edge between the fixed end 100 and the columnar structure 201, which cooperates with the first guide groove 2014. The first guide groove 2014 and the second guide groove 1001 cooperate to limit the movement range of the columnar structure 201. Thus, after the columnar structure 201 is embedded into the second guide groove 1001 of the fixed end 100 via the first guide groove 2014, it limits the movement range of the columnar structure 201. Then, the limiting structure 203 is placed inside the columnar structure 201, and the screw 300 passes through the limiting structure 203 and connects it to the fixed end 100, thereby preventing the limiting structure 203 from moving. This combination of the fixed end 100 and the moving component 200 forms the antenna folding mechanism. The moving component 200 is obtained by assembling the columnar structure 201, the cylindrical shell 202, and the limiting structure 203. Figure 4 As shown. Combining the movable component 200 and the fixed end 100 yields the antenna folding mechanism as shown. Figure 5 and Figure 6 As shown.

[0033] For example, the outer wall of the limiting structure 203 is provided with an axially extending elongated protrusion 2031, and the inner wall of the columnar structure 201 is provided with a limiting groove that mates with the elongated protrusion 2031; thus, when the cylindrical shell 202 drives the columnar structure 201 to rotate, the engagement of the elongated protrusion 2031 and the limiting groove limits the columnar structure 201 and the cylindrical shell 202 to a preset position. The preset position can be the position where the antenna assembly is in the open state, such as... Figure 6 As shown, the preset position can also be the position where the antenna assembly is in its retracted state, such as... Figure 5 As shown.

[0034] The beneficial effects of the antenna folding mechanism in this application embodiment are as follows: the antenna folding mechanism ensures precise and controllable movement trajectory of the moving component during unfolding and folding by cooperating with the first guide groove of the columnar structure in the moving component and the corresponding second guide groove of the fixed end, effectively preventing deviation. The design of the elongated protrusion corresponding to the limiting structure in the moving component and the limiting groove corresponding to the columnar structure provides dual positioning protection, making the antenna component stable in the unfolded state and easy to store in the folded state. The interference fit design of the limiting groove and the elongated protrusion effectively suppresses fretting wear caused by flight vibration. This antenna folding mechanism is particularly suitable for UAV communication systems that require frequent folding and storage, significantly improving the portability and reliability of the device while ensuring signal quality.

[0035] In some embodiments, the limiting structure 203 is provided with two parallel elongated protrusions 2031.

[0036] For example, such as Figure 3 As shown, the limiting structure 203 is provided with two parallel elongated protrusions 2031, which provide good support for the subsequent fixing of the cylindrical shell 202 in conjunction with the limiting groove.

[0037] In some embodiments, square grooves 2032 are provided between the elongated protrusions 2031, and the square grooves 2032 are evenly distributed along the length direction of the elongated protrusions 2031. The square grooves 2032 are used to store lubricating grease.

[0038] For example, such as Figure 3 As shown, the limiting structure 203 has two parallel elongated protrusions 2031, with a square groove 2032 between them. This square groove 2032 is evenly distributed along the length of the elongated protrusions and is used to store lubricating grease. For example, five square grooves 2032 can be evenly arranged. The lubricating grease stored in the square groove 2032 is slowly released during relative movement between the limiting structure 203 and the columnar structure 201, forming an oil film and reducing frictional loss. Because the square groove 2032 is evenly distributed along the length of the elongated protrusions 2031, the grease can cover the entire sliding contact surface, avoiding abnormal wear caused by localized dry friction. The square groove structure facilitates the refilling of lubricating grease during later maintenance without disassembling the entire mechanism, reducing maintenance costs. During long-term use, the grease will naturally replenish the friction surface due to movement, reducing the need for manual intervention.

[0039] In some embodiments, the limiting groove includes a first groove 2011, a second groove 2012, and a third groove 2013; when the antenna assembly is in the open state, the elongated protrusion (2031) is clamped in the first groove 2011 and the elongated protrusion 2031 is clamped in the third groove 2013; the elongated protrusion 2031 disengages from the second groove 2012.

[0040] For example, such as Figure 3 As shown, the limiting groove is designed with a first groove 2011, a second groove 2012, and a third groove 2013. The limiting structure 203 has two parallel elongated protrusions 2031 for cooperating with the first groove 2011, the second groove 2012, and the third groove 2013 of the limiting groove.

[0041] For example, when the antenna assembly is in the open state, the cylindrical housing 202 drives the columnar structure 201 to rotate clockwise along a first direction. This causes the first groove 2011 and the third groove 2013 to form a stable lock with the two elongated protrusions 2031 of the limiting structure 203, i.e., the first groove 2011 and the third groove 2013 are respectively embedded into the corresponding elongated protrusions 2031, thus keeping the antenna assembly in the movable component 200 in the open state. Simultaneously, the second groove 2012 is in a non-cooperative state, i.e., the second groove 2012 is in an idle state. When the first groove 2011 and the third groove 2013 are fully embedded into the elongated protrusions 2031, the user can confirm that the movable component 200 is securely fixed through tactile or auditory feedback, such as a "click" sound. The effect is as follows when the antenna assembly is in the open state: Figure 6 As shown.

[0042] For example, by simultaneously embedding the elongated protrusion 2031 into the first groove 2011 and the third groove 2013, a two-point positioning is formed, avoiding swaying or deflection caused by single-point support and improving the mechanical stability of the antenna assembly after deployment. During UAV flight, the dual grooves effectively resist airflow disturbances, preventing the antenna assembly from accidentally folding or shifting due to vibration, ensuring stable communication signals. The interlocking of the grooves and the elongated protrusion forms a mechanical self-locking mechanism, which can only be unlocked under external force, preventing accidental folding of the antenna due to collisions or vibrations. The dual grooves share the load, reducing stress concentration at a single point and lowering the risk of wear or deformation after long-term use. The precise fit between the grooves and the protrusion reduces frictional noise and energy loss during relative movement.

[0043] In some embodiments, when the antenna assembly is in a folded state, the elongated protrusion 2031 is clamped in the second groove 2012 and the elongated protrusion 2031 is clamped in the third groove 2013; the elongated protrusion 2031 disengages from the first groove 2011.

[0044] For example, in the folded antenna state, the engagement relationship between the elongated protrusion 2031 and the limiting groove of the columnar structure 201 changes as follows: the elongated protrusion 2031 simultaneously engages with the second groove 2012 and the third groove 2013, forming a double-point lock to ensure the stability of the folded state. The elongated protrusion 2031 disengages from the first groove 2011, and the first groove 2011 no longer participates in the fixation, freeing up space to complete the full fold, thereby allowing the cylindrical shell 202 to fit snugly against the body for easy storage. Figure 5 As shown.

[0045] For example, the folded / unfolded state is reliably switched by time-division multiplexing of the groove. The second groove 2012 and the third groove 2013 cooperate with the elongated protrusion 2031 to form a redundant lock, preventing the antenna from accidentally popping open due to vibration or collision during storage.

[0046] For example, after the first groove 2011 disengages from the elongated protrusion 2031, it provides additional rotational space for antenna folding, allowing the antenna to fit completely against the body and reducing storage volume. The elongated protrusion 2031 can only simultaneously engage the second groove 2012 and the third groove 2013 when the moving component 200 rotates to a specific angle, ensuring that the folding action must be completed along a preset path and preventing a semi-locked state. The double-groove locking mechanism during folding resists severe vibrations during transportation, preventing the antenna from loosening.

[0047] In some embodiments, when the antenna assembly is adjusted from the folded state to the open state, the cylindrical housing 202 drives the columnar structure 201 to rotate along a first direction, the second groove 2012 disengages from the elongated protrusion 2031, and the third groove 2013 disengages from the elongated protrusion 2031; when the antenna assembly is adjusted from the open state to the folded state, the cylindrical housing 202 drives the columnar structure 201 to rotate along a second direction, the first groove 2011 disengages from the elongated protrusion, and the third groove 2013 disengages from the elongated protrusion 2031; the first direction and the second direction are opposite to each other.

[0048] For example, in the folded state of the antenna, the elongated protrusion 2031 simultaneously engages with the second groove 2012 and the third groove 2013, forming a dual-point lock to ensure the stability of the folded state. Then, during the process of adjusting the antenna assembly from the folded state to the open state, the cylindrical housing 202 drives the columnar structure 201 to rotate clockwise along the first direction, thereby disengaging the second groove 2012 from the elongated protrusion 2031 and the third groove 2013 from the elongated protrusion 2031. When rotated to the critical position, the engagement / disengagement of the grooves and protrusions generates noticeable mechanical feedback, allowing the user to perceive the operating status without visual confirmation.

[0049] For example, the cylindrical housing 202 drives the columnar structure 201 to rotate clockwise, causing the first groove 2011 and the third groove 2013 to engage with the two elongated protrusions 2031 of the limiting structure 203, thus locking the antenna. During the process of adjusting the antenna assembly from the open state to the folded state, the cylindrical housing 202 drives the columnar structure 201 to rotate counterclockwise along a second direction, opposite to the unfolding direction. The first groove 2011 and the third groove 2013 gradually disengage from the elongated protrusions 2031, releasing the lock. The first and second directions are opposite to each other. For example, if the first direction is clockwise, the second direction is counterclockwise; if the first direction is counterclockwise, the second direction is clockwise. When rotated to the critical position, the engagement / disengagement of the grooves and protrusions generates noticeable mechanical feedback, allowing the user to perceive the operating status without visual confirmation.

[0050] For example, unfolding and folding are performed in opposite directions to avoid partial locking or damage to the mechanism due to incorrect rotation. Bidirectional rotation alters the direction of force on the friction surfaces, preventing continuous wear on one side (as unidirectional rotation would exacerbate wear on one side of the protrusion). Combined with the lubrication groove design (as described above), this further extends the mechanism's lifespan. Reverse rotation directly unlocks the mechanism without requiring an additional unlocking button or tool. After detachment, the antenna can be freely folded to reduce storage volume (e.g., fitting snugly against the body or stored in a dedicated slot).

[0051] In some embodiments, the antenna folding mechanism is fixedly mounted on the corresponding vertical tail 400 of the UAV via one end of the fixed end 100 away from the columnar structure 201.

[0052] For example, such as Figure 5 and Figure 6 As shown, the antenna folding mechanism is directly integrated into the structural frame of the corresponding vertical tail 400 of the UAV via the fixed end 100. After the cylindrical shell 202 is folded into place, the outer contour of the cylindrical shell 202 fits tightly with the vertical tail 400. This facilitates the transportation of the UAV, and during transportation, the interaction between the second groove 2012 and the third groove 2013 and the elongated protrusion prevents the antenna folding mechanism from shaking arbitrarily, thereby improving transportation safety.

[0053] In some embodiments, the antenna assembly includes a main antenna component and an extension antenna component integrally connected to the main antenna component; after the main antenna component is embedded inside the cylindrical housing 202, the extension antenna component extends out from the cylindrical housing 202, passes through a pre-set wiring channel inside the vertical tail 400, and then extends along the wiring groove inside the tail beam 500 to connect to the radio frequency connection interface of the fuselage.

[0054] For example, the antenna assembly includes a main antenna component and an extension antenna component integrally connected to the main antenna component. The main antenna component can be an antenna made of rigid material such as a rubber rod antenna. The main antenna component is then embedded inside the cylindrical housing 202. The extension antenna component is a flexible antenna such as a wire antenna. After the main antenna component is embedded inside the cylindrical housing 202, the extension antenna component extends out from the cylindrical housing 202 and passes through a pre-set wiring channel inside the vertical tail 400. It then extends along the wiring groove inside the tail beam 500 to connect to the radio frequency connection interface of the corresponding fuselage of the UAV.

[0055] For example, the main antenna component, embedded in the cylindrical housing, provides stable physical support, reducing the impact of vibrations or airflow disturbances during flight on the antenna and ensuring the stability of signal transmission / reception. The extended antenna component is routed through pre-defined channels in the vertical tail and tail boom, avoiding wear or interference caused by external exposure. Simultaneously, the flexible material adapts to complex spatial layouts, reducing signal transmission loss. Embedding the main antenna component in the cylindrical housing saves external space, making the UAV more compact and reducing air resistance. Internal wiring channels utilize existing structures in the vertical tail and tail boom (such as wiring channels and slots), avoiding additional external cables, reducing weight, and maintaining aerodynamic shape. With the main antenna component located inside the cylindrical housing and the extended antenna component routed through internal channels, the impact of external electromagnetic interference (such as lightning and other radio frequency equipment) on the signal is reduced.

[0056] In some embodiments, a tail rotor 600 is also mounted on the side of the vertical tail 400 away from the antenna folding mechanism. The tail rotor 600 has a preset tilt angle. The horizontal component of the tail rotor 600 generated by the preset tilt angle is used to balance the main rotor's anti-torque, and the vertical component of the tail rotor 600 generated by the preset tilt angle is used to provide additional lift.

[0057] For example, the tail rotor 600 obtains a horizontal component of force through a tilt angle to counteract the anti-torque generated by the main rotor rotation, and a vertical component of force to provide additional lift. The tilt angle can be 20 degrees, and the tilt angle can be adjusted according to the aircraft model; this application does not impose specific limitations.

[0058] The drone according to the second aspect of the application includes the antenna folding mechanism of the first aspect of the application described above.

[0059] Since the UAV includes the antenna folding mechanism of the first aspect embodiment, the corresponding contents of the antenna folding mechanism of the first aspect embodiment can be applied to the UAV of the second aspect, and have the same implementation principle and technical effect. To avoid redundancy, it will not be described in detail here.

[0060] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. An antenna folding mechanism, comprising a fixed end and a movable component, characterized in that: The moving component includes a columnar structure, a cylindrical shell, and a limiting structure; The cylindrical shell is fixedly connected to the outside of the columnar structure, and an antenna assembly is housed inside the cylindrical shell; The columnar structure has one end movably connected to a fixed end. The mating edge between the columnar structure and the fixed end is provided with a first guide groove, and the mating edge between the fixed end and the columnar structure is provided with a second guide groove that cooperates with the first guide groove. The limiting structure is sleeved inside the columnar structure; the limiting structure is fixedly connected to the fixed end by screws; The outer wall of the limiting structure is provided with an axially extending elongated protrusion; the inner wall of the columnar structure is provided with a limiting groove that cooperates with the elongated protrusion. When the cylindrical shell drives the columnar structure to rotate, the elongated protrusion and the limiting groove cooperate to limit the columnar structure and the cylindrical shell in a preset position.

2. The antenna folding mechanism according to claim 1, characterized in that: The limiting structure is provided with two parallel elongated protrusions.

3. The antenna folding mechanism according to claim 2, characterized in that: Square grooves are provided between the elongated protrusions, and the square grooves are evenly distributed along the length direction of the elongated protrusions. The square grooves are used to store lubricating grease.

4. The antenna folding mechanism according to claim 2, characterized in that: The limiting groove includes a first groove, a second groove, and a third groove; When the antenna assembly is in the open state, the elongated protrusion is clamped in the first groove and the elongated protrusion is clamped in the third groove; the elongated protrusion disengages from the second groove.

5. The antenna folding mechanism according to claim 4, characterized in that: When the antenna assembly is in a folded state, the elongated protrusion is clamped in the second groove and the elongated protrusion is clamped in the third groove; the elongated protrusion disengages from the first groove.

6. The antenna folding mechanism according to claim 5, characterized in that: When the antenna assembly is adjusted from the folded state to the open state, the cylindrical shell drives the columnar structure to rotate along the first direction, the second groove disengages from the elongated protrusion, and the third groove disengages from the elongated protrusion. When the antenna assembly is adjusted from the open state to the folded state, the cylindrical shell drives the columnar structure to rotate along the second direction, the first groove disengages from the elongated protrusion, and the third groove disengages from the elongated protrusion; the first direction and the second direction are opposite to each other.

7. The antenna folding mechanism according to any one of claims 1-6, characterized in that: The antenna folding mechanism is fixedly mounted on the corresponding vertical tail of the UAV through the end of the fixed end that is away from the columnar structure.

8. The antenna folding mechanism according to claim 7, characterized in that: The antenna assembly includes a main antenna component and an extension antenna component integrally connected to the main antenna component; After the main antenna component is embedded inside the cylindrical housing, the extended antenna component extends out from the cylindrical housing, passes through the pre-set wiring channel inside the vertical tail, and then extends along the wiring groove inside the tail beam to connect to the radio frequency connection interface of the fuselage.

9. The antenna folding mechanism according to claim 7, characterized in that: A tail rotor is also installed on the side of the vertical tail away from the antenna folding mechanism. The tail rotor has a preset tilt angle. The horizontal component of the tail rotor generated by the preset tilt angle is used to balance the anti-torque of the main rotor, and the vertical component of the tail rotor generated by the preset tilt angle is used to provide additional lift.

10. An unmanned aerial vehicle (UAV), characterized in that... It includes the antenna folding mechanism as described in any one of claims 1-9.

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