Foldable drone structure

Abstract

The application relates to the field of unmanned planes, in particular to a foldable unmanned plane structure which comprises a positioning frame and a body arranged at the center position of the positioning frame, the outer wall of the positioning frame is fixed with arms which can rotate outward, the outer wall of the positioning frame is fixed with a limiting plate, the limiting plate body is attached to the rotating end of the arm, the upper end surface and the lower end surface of the body are respectively provided with a bottom plate and a top plate, the upper end surface of the bottom plate is provided with a plug-in part, when the arm is unfolded and the body is lifted, the plug-in part is attached to the side surface of the arm away from the limiting plate. The application adopts a disc type structure design, the arm forms a shape attached to the peripheral structure of the body, thus a storage space is left at the edge in the way of storing the internal space, the protection effect is provided without excessively increasing the coverage range, and the fixing of the arm and other structures adopts a simple limiting structure, the structure only needs to adopt simple operation to realize relatively stable fixing of the structure.

Description

Technical Field

[0001] This invention relates to the field of drones, and more particularly to foldable drone structures. Background Technology

[0002] A drone is a machine that does not require human control within its casing. With the continuous development of lightweight technology, modern drones are now integrated into a very small shell structure, allowing for various operations via a remote control. Small drones are typically used for functions such as photography, inspection, and mapping, making portability and safety paramount. For civilian drones, a folding structure is often designed for easy carrying, bending the arms to create a stowable shape and reduce space requirements. However, current drone folding mechanisms only involve bending the arms without any protective structure. During storage, the arms or blades are easily damaged due to shaking, affecting the drone's lifespan. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides the following technical solution: The foldable drone structure includes: a positioning frame and a body located at the center of the positioning frame.

[0004] Specifically, the outer wall of the positioning frame is fixed with an outwardly rotatable machine arm, and the outer wall of the positioning frame is fixed with a limit plate. The limit plate is attached to the rotating end of the machine arm. The upper and lower ends of the machine body are respectively provided with a bottom plate and a top plate. The upper end of the bottom plate is provided with a connector. When the machine arm is extended and the machine body is raised, the connector is attached to the side of the machine arm away from the limit plate.

[0005] As an improvement to the above technical solution, one end of the arm is integrally formed with a mounting part, and a motor is detachably fixed to the upper end surface of the mounting part. The power end of the motor is connected to a fan blade assembly. The other end of the arm is provided with a fixing hole, and a limit bolt is inserted into the fixing hole. The limit bolt is fixed to the bottom of the positioning frame.

[0006] As an improvement to the above technical solution, the positioning frame includes an inner ring and a support plate fixed to the outer wall of the inner ring. The upper end face of the support plate is provided with a limiting plate that matches the number of machine arms. The limiting plate fits against the side wall of the machine arm where a fixing hole is opened. The surface of the support plate is provided with a slot. The limiting bolt passes through the bottom of the support plate into the interior of the fixing hole. The plug-in is inserted through the bottom of the support plate and fits against the other side of the machine arm.

[0007] As an improvement to the above technical solution, the limiting plate is an inverted L-shaped plate, and the limiting bolt is threaded through and inserted into the interior of the limiting plate.

[0008] As an improvement to the above technical solution, the outer wall of the inner ring is provided with a groove. When the arm retracts, the motor is housed inside the groove, and the fan blade assembly is housed in the cavity separated by the top plate and the support plate. The outer wall of the inner ring is integrally formed with a hollow protective component, which is located above the arm and covers the arm.

[0009] As an improvement to the above technical solution, the machine body also includes a body, the top plate is integrally formed on the upper end surface of the body, the bottom plate is detachably fixed below the bottom plate, the body fits the inner ring, and a heat dissipation mesh is provided at the center of the bottom plate.

[0010] As an improvement to the above technical solution, the lower end face of the top plate is provided with several limiting sleeves, the side of the motor away from the mounting part has a power shaft, the end of the power shaft is provided with a plug-in part, and the plug-in part is inserted into the limiting sleeve to lock the fan blade assembly.

[0011] As an improvement to the above technical solution, a magnetic sheet is embedded on the surface of the base plate, and a magnetically adsorbable material is embedded in some end faces of the support plate near the base plate. When the base plate and the support plate are attached, the magnetic sheet adsorbs the magnetically adsorbable material to form a fixed structure.

[0012] As an improvement to the above technical solution, the surface of the motor is provided with a fastening part, the upper end face of the mounting part is integrally formed with a protrusion, and a fixing hole is provided at the center of the mounting part. When the bolt is inserted into the fixing hole and tightened with the motor, the protrusion and the fastening part are fastened together to form a limit.

[0013] The beneficial effects of this invention are: By adopting a disc-shaped structural design, the arm is made to fit snugly against the surrounding structure of the machine body. This method of storing internal space leaves room at the edges, providing better protection without excessively increasing the coverage area. Moreover, the arm and other structures are fixed using a simple limiting structure, which can be easily fixed with simple operation. This rotating disc structure reduces the possibility of damage to the arm and provides better protection for easily damaged structures such as the arm and fan blades. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 for Figure 2 A first-person perspective 3D structural diagram; Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 for Figure 3 Enlarged structural diagram at point B; Figure 6 For this Figure 2 A three-dimensional structural diagram from a second-person perspective; Figure 7 for Figure 6 Enlarged structural diagram at point C; Figure 8 for Figure 6 Enlarged structural diagram at point D; Figure 9 for Figure 6 Enlarged structural diagram at point E in the middle; Figure 10 This is a structural diagram of the arm of the present invention after it has been deployed.

[0015] Figure label: 10. Positioning frame; 11. Inner ring; 111. Groove; 12. Support plate; 13. Limiting plate; 131. Slot; 14. Protective component; 20. Body; 21. Fuselage; 22. Base plate; 221. Connector; 23. Top plate; 231. Limit sleeve; 24. Limit bolt; 30. Arm; 31. Motor; 311. Power shaft; 312. Connecting part; 313. Fan blade assembly; 314. Fastening part; 32. Mounting part; 33. Protrusion; 34. Fixing hole. Detailed Implementation

[0016] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0017] In existing technologies, civilian drones are typically designed with a folding structure for easy portability. This is achieved by bending the arms to create a folded shape, reducing the space occupied and facilitating storage. However, current drone folding mechanisms only involve bending the arms and lack any protective structure. During storage, the arms or blades are easily damaged due to shaking, affecting the drone's lifespan. To address this issue, the following embodiment is provided: Please see Figures 1 to 10 A foldable drone structure is provided, including: a positioning frame 10 and a body 20 disposed at the center of the positioning frame 10.

[0018] Specifically, the outer wall of the positioning frame 10 is fixed with an outwardly rotatable arm 30, and the outer wall of the positioning frame 10 is fixed with a limiting plate 13. The limiting plate 13 fits against the rotating end of the arm 30. The upper and lower ends of the body 20 are respectively provided with a bottom plate 22 and a top plate 23. The upper end of the bottom plate 22 is provided with a connector 221. When the arm 30 is extended and the body 20 is raised, the connector 221 fits against the side of the arm 30 away from the limiting plate 13.

[0019] A limiting plate 13 is used to restrict the position of the end of the robotic arm 30. The end of the robotic arm 30 is retracted and extended by rotating. During the extension process, it will touch the limiting plate 13 on the side. When the two touch, the limiting plate 13 will squeeze the robotic arm 30 to ensure that the structural component is fixed. After the limiting on one side is completed, the body 20 is controlled to rise in the middle, so that the connector 221 can be inserted from the bottom to the other side of the robotic arm 30, thus forming a position limiting function on both sides, thereby achieving a fixing effect in the use state. When not in use, the robotic arm 30 can be rotated back directly. At this time, the robotic arm 30 is retracted inside and will not touch the robotic arm 30 or other structures on the robotic arm 30 during transportation.

[0020] In this embodiment, the structural design of the robotic arm 30 is as follows: One end of the arm 30 is integrally formed with a mounting part 32. A motor 31 is detachably fixed to the upper end surface of the mounting part 32. The power end of the motor 31 is connected to a fan blade assembly 313. The other end of the arm 30 is provided with a fixing hole 34. A limit bolt 24 is inserted into the fixing hole 34 and fixed to the bottom of the positioning frame 10.

[0021] The mounting part 32 provides an extended position and restricts the position of the motor 31. The fan blade assembly 313 at its end is fixed to the two fan blades separately by fixed bolts and frame structure, and finally the entire fan blade assembly 313 is fixed to the power end of the motor 31. The other end of the arm 30 is fixed to the bottom of the positioning frame 10 through the fixing hole 34, thereby ensuring the outward rotation function design of the arm 30.

[0022] To further improve the design of the structural components, this embodiment provides the following design for the positioning frame 10: The positioning frame 10 includes an inner ring 11 and a support plate 12 fixed to the outer wall of the inner ring 11. The upper end surface of the support plate 12 is provided with a limiting plate 13, which is the same number as the number of the robotic arms 30. The limiting plate 13 fits against the side wall of the robotic arm 30 where the fixing hole 34 is opened. The surface of the support plate 12 is provided with a slot 131. The limiting bolt 24 passes through the bottom of the support plate 12 and into the interior of the fixing hole 34. The plug 221 passes through the bottom of the support plate 12 and fits against the other side of the robotic arm 30.

[0023] While the limiting plate 13 is used to fix the arm 30, the slot 131 provides insertion space at the bottom to ensure the fit between the connector 221 and the limiting plate 13. On this basis, in order to enhance the locking function of the arm 30, the limiting plate 13 is set as an inverted L-shaped plate, which can form a rectangular limiting cavity at the position of the arm 30. Of course, due to the arc shape of the arm 30, the inner wall of the limiting cavity also fits the arm 30, which can ensure the position restriction effect of the arm 30. For the limiting plate 13, in order to ensure the normal rotation of the arm 30, the limiting bolt 24 should be threaded through and inserted into the interior of the limiting plate 13. This can ensure the stability of the arm 30 without excessive shaking. Of course, elastic elements, such as rubber filling or springs, can be added inside to make the limiting bolt 24 form a tighter locking effect.

[0024] The structural design of the positioning frame 10 also needs to include the protection of structures such as the arm 30 and the fan blade assembly 313. Based on this, the following design is given: The outer wall of the inner ring 11 has a groove 111. When the arm 30 retracts, the motor 31 is stored inside the groove 111, and the fan blade assembly 313 is stored in the cavity separated by the top plate 23 and the support plate 12. The outer wall of the inner ring 11 is integrally formed with a hollow protective member 14. The protective member 14 is set above the arm 30 and covers the arm 30.

[0025] The groove 111 provides a positional constraint function for the motor 31 in the retracted state. Of course, the interior of the groove 111 can also be equipped with rubber or magnetic components to provide buffering and adsorption functions, preventing the arm 30 from swinging after retraction. In order to further enhance the protection effect, a hollow protective component 14 is also provided. The purpose of the protective component 14 is to protect the arm 30 while also forming a positional constraint through friction, preventing the arm 30 from shaking and falling off after retraction. Therefore, in this embodiment, the protective component 14 can be made of materials or workpieces that have both elasticity and damping effects, such as rubber or damping pads.

[0026] Of course, in order to adapt to the design of the structural components of the positioning frame 10, the following design is also given for the body 20 in this embodiment: The body 20 also includes a body 21, a top plate 23 integrally formed on the upper surface of the body 21, a bottom plate 22 detachably fixed to the bottom of the bottom plate 22, the body 21 fits against the inner ring 11, and a heat dissipation mesh is provided at the center of the bottom plate 22.

[0027] The body 21 is inserted into the inner ring 11. The top plate 23 and the bottom plate 22 are used to fix the entire body 21. The bottom plate 22 is fixed by one or more of the following methods: bolts, threads, and clips, to ensure the disassembly function. Its surface is provided with heat dissipation mesh to ensure heat dissipation during long-term operation. When disassembly is required, the bottom plate 22 is removed, and the entire body 21 can be removed from the top.

[0028] After the drone is successfully retracted, the blades of the drone's blade assembly 313 are typically unlocked. In this case, excessive shaking can easily damage the blades. To avoid this problem, the following design is provided in this embodiment: The lower end face of the top plate 23 is provided with several limiting sleeves 231. The motor 31 has a power shaft 311 on the side away from the mounting part 32. The end of the power shaft 311 is provided with a plug-in part 312. The plug-in part 312 is inserted into the limiting sleeve 231 to lock the fan blade assembly 313.

[0029] After locking is completed, the power shaft 311 of each motor 31 will be locked by the cooperation between the limiting sleeve 231 and the plug-in part 312. The plug-in part 312 and the limiting sleeve 231 are non-circular in design. The purpose is to ensure that the power shaft 311 connected to the entire fan blade assembly 313 is fixed after insertion, which also ensures that the position of the fan blade assembly 313 is fixed, thereby avoiding the problem of fan blade wobbling.

[0030] To prevent loosening between slot 131 and connector 221 during flight, the following design is provided in this embodiment: The base plate 22 has magnetic sheets embedded on its surface, and some end faces of the support plate 12 near the base plate 22 have magnetically adsorbable materials embedded inside. When the base plate 22 and the support plate 12 are attached, the magnetic sheets adsorb the magnetically adsorbable materials to form a fixed structure.

[0031] The structure between the base plate 22 and the support plate 12 is fixed by the adsorption function between the magnetic sheet and the magnetically adsorbable material. During flight, the shaking is small, and the bottom can be fixed by magnetic attraction alone. The lateral compression is perpendicular to gravity, so it will not cause the adsorption between the base plate 22 and the support plate 12 to break, thus ensuring the stability of the connection between the structural components of the entire UAV during flight.

[0032] To further enhance the stability of the structural components during operation, this embodiment also provides the mounting structure of the motor 31, the specific design of which is as follows: The surface of the motor 31 is provided with a fastening part 314, and the upper end face of the mounting part 32 is integrally formed with a protrusion 33. A fixing hole 34 is provided at the center of the mounting part 32. When the bolt passes through the fixing hole 34 and is tightened with the motor 31, the protrusion 33 and the fastening part 314 are fastened together to form a limit.

[0033] The position restriction function is formed by the fastening form between the fastening part 314 and the protrusion 33. When the two are fastened, as long as the bolt is inserted and tightened from the fixing hole 34, the entire motor 31 can be locked on the surface of the mounting part 32, thereby enhancing the stability of the structural components. On this basis, an elastic element can also be added to enhance the locking function. For example, a spring can be installed on the bolt sleeve, and the elasticity of the spring can achieve the function of a self-locking bolt.

[0034] The above embodiments are merely illustrative of the technical solutions of the present invention and are not intended to limit it. Anyone skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A foldable drone structure, characterized in that, include: A positioning frame (10) is fixed to an outwardly rotatable machine arm (30) on its outer wall. A limiting plate (13) is fixed to the outer wall of the positioning frame (10) and the limiting plate (13) is attached to the rotating end of the machine arm (30). The body (20) is located at the center of the positioning frame (10). The upper and lower surfaces of the body (20) are respectively provided with a bottom plate (22) and a top plate (23). The upper surface of the bottom plate (22) is provided with a connector (221). When the arm (30) is unfolded and the body (20) is raised, the connector (221) fits against the side of the arm (30) away from the limiting plate (13).

2. The foldable drone structure according to claim 1, characterized in that: One end of the arm (30) is integrally formed with a mounting part (32), and a motor (31) is detachably fixed on the upper end surface of the mounting part (32). The power end of the motor (31) is connected to a fan blade assembly (313). The other end of the arm (30) is provided with a fixing hole (34), and a limit bolt (24) is inserted into the fixing hole (34). The limit bolt (24) is fixed to the bottom of the positioning frame (10).

3. The foldable drone structure according to claim 2, characterized in that: The positioning frame (10) includes an inner ring (11) and a support plate (12) fixed to the outer wall of the inner ring (11). The upper end surface of the support plate (12) is provided with a limiting plate (13) in the same number as the machine arm (30). The limiting plate (13) fits against the side wall of the machine arm (30) where a fixing hole (34) is opened. The surface of the support plate (12) is provided with a slot (131). The limiting bolt (24) passes through the bottom of the support plate (12) into the interior of the fixing hole (34). The plug (221) passes through the bottom of the support plate (12) and fits against the other side of the machine arm (30).

4. The foldable drone structure according to claim 3, characterized in that: The limiting plate (13) is an inverted L-shaped plate, and the limiting bolt (24) is threaded through and inserted into the interior of the limiting plate (13).

5. The foldable drone structure according to claim 3, characterized in that: The outer wall of the inner ring (11) is provided with a groove (111). When the arm (30) retracts, the motor (31) is stored inside the groove (111). The fan blade assembly (313) is stored in the cavity separated by the top plate (23) and the support plate (12). The outer wall of the inner ring (11) is integrally formed with a hollow protective member (14). The protective member (14) is set above the arm (30) and covers the arm (30).

6. The foldable drone structure according to claim 3, characterized in that: The body (20) also includes a body (21), the top plate (23) is integrally formed on the upper surface of the body (21), the bottom plate (22) is detachably fixed to the bottom of the bottom plate (22), the body (21) fits the inner ring (11), and the bottom plate (22) has a heat dissipation mesh at the center.

7. The foldable drone structure according to claim 6, characterized in that: The lower end face of the top plate (23) is provided with a plurality of limiting sleeves (231). The motor (31) has a power shaft (311) on the side away from the mounting part (32). The end of the power shaft (311) is provided with a plug-in part (312). The plug-in part (312) is inserted into the limiting sleeve (231) to lock the fan blade assembly (313).

8. The foldable drone structure according to claim 3, characterized in that: The base plate (22) has a magnetic sheet embedded in its surface, and the support plate (12) has a magnetically adsorbable material embedded in some end faces near the base plate (22). When the base plate (22) and the support plate (12) are in contact, the magnetic sheet adsorbs the magnetically adsorbable material to form a fixed structure.

9. The foldable drone structure according to any one of claims 2-8, characterized in that: The surface of the motor (31) is provided with a fastening part (314), and the upper end face of the mounting part (32) is integrally formed with a protrusion (33). The center position of the mounting part (32) is provided with a fixing hole (34). When the bolt passes through the fixing hole (34) and is tightened with the motor (31), the protrusion (33) and the fastening part (314) are fastened together to form a limit.

Images