An electric drive for a drone

Abstract

The utility model relates to electric drive technical field, and disclose a kind of electric driver for unmanned aerial vehicle, comprising: protective shell, motor, heat dissipation hole, filter screen plate, heat dissipation fan, side clamping plate, heat conduction card plate, heat conduction top plate and heat conduction inclined plate, motor surface is evenly provided with heat dissipation fin and is formed heat dissipation groove by heat dissipation fin;Heat dissipation hole is opened in the upper portion of protective shell around, filter screen plate is installed in the gas outlet end of heat dissipation hole, and heat dissipation fan is installed in the inner cavity of heat dissipation hole.Side clamping plate is set to the inner cavity center front end and rear end of protective shell, heat conduction card plate is installed in the inner side surface center of side clamping plate and is inserted with the heat dissipation groove of motor Connection, heat conduction top plate is installed on the upper surface of heat conduction card plate, and heat conduction inclined plate is installed on the upper surface of heat conduction top plate and corresponds with the air inlet end position of heat dissipation hole, and the driver is through multiple path accurate heat conduction channel cooperate heat dissipation fan fast heat dissipation, filter screen plate blocks dust, solve motor high temperature problem.

Description

Technical Field

[0001] This utility model relates to the field of electric drive technology, specifically to an electric drive for unmanned aerial vehicles (UAVs). Background Technology

[0002] Electric actuators for drones are a core component of the drone's power system, mainly consisting of a protective shell, drive motor, propellers, and shafts. Their performance directly determines the drone's flight stability, endurance, and operational efficiency. As the power output source, the drive motor continuously generates a large amount of heat during high-speed operation. The motor's operating temperature, output performance, and lifespan are closely related. If the heat cannot be dissipated in time, it can lead to a decrease in motor output power and an increase in energy consumption, or even cause aging of the motor winding insulation and bearing damage, or even motor burnout. At the same time, the motor needs to be precisely connected to the shaft to ensure transmission accuracy. Therefore, heat dissipation and ease of installation and maintenance are core requirements for the design of electric actuators.

[0003] Existing electric actuators for drones have significant shortcomings in heat dissipation and motor mounting structures. Firstly, existing heat dissipation structures often rely solely on heat sinks or single ventilation holes on the motor surface, lacking compatible heat conduction components. This results in heat being dissipated naturally through the fins or passively exhausted through a single channel, leading to short and inefficient heat conduction paths. Slow airflow within the ventilation holes further reduces heat dissipation efficiency, failing to meet the high-speed operation requirements of the motor and causing it to remain at high temperatures for extended periods. Secondly, existing motor mounting methods often involve bolts directly securing the motor to the inner wall of the protective housing or bracket. This method offers poor adjustability, requiring alignment of multiple bolt holes during installation, making fine-tuning of the motor position difficult. If the heat sinks on the motor surface need to be integrated with other heat dissipation components, a tight fit cannot be guaranteed, affecting heat conduction. Subsequent maintenance and disassembly require unscrewing each bolt individually, a cumbersome process that can cause thread wear and affect installation stability. The root cause lies in the lack of adjustable clamping components in existing structures, hindering rapid motor positioning and disassembly through simple operations, reducing installation accuracy and increasing maintenance costs. Therefore, this paper proposes an electric actuator for drones. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an electric drive for unmanned aerial vehicles (UAVs) to solve the aforementioned technical problems of further reducing heat dissipation efficiency, failing to meet the heat dissipation requirements of the motor during high-speed operation, and easily causing the motor to be in a high-temperature state for a long time.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric drive for unmanned aerial vehicles, comprising: The protective housing includes a protective cover plate at the top of the protective housing, with a propeller at the center of the upper surface of the protective cover plate and a motor installed at the center of the bottom of the inner cavity of the protective housing. The surface of the motor is uniformly covered with heat dissipation fins, and the surface of the motor forms heat dissipation grooves through the heat dissipation fins. A rotating shaft connects the motor and the propeller. Heat dissipation holes are opened around the upper part of the protective housing, and a filter plate is installed at the air outlet of the heat dissipation holes. A cooling fan is installed in the inner cavity of the heat dissipation holes. Side clamps are set at the front and rear ends of the inner cavity of the protective shell, and a heat-conducting plate is installed at the center of the inner side of the side clamp. The heat-conducting plate is inserted and connected to the corresponding heat dissipation groove of the motor. A heat-conducting top plate is installed on the upper surface of the heat-conducting plate, and the inner inclined surface of the heat-conducting top plate is tightly fitted with the inclined surface of the upper surface of the motor. A heat-conducting inclined plate is installed on the upper surface of the heat-conducting top plate, and the heat-conducting inclined plate corresponds to the air inlet position of the corresponding heat dissipation hole. An external pull rod is inserted and connected to the center of the front and back of the protective housing, and the inner end of the external pull rod is aligned with the center of the front of the corresponding side clamp. A return spring is fitted on the surface of the external pull rod, and the front and rear ends of the return spring are respectively attached to the inner wall of the protective housing and the front of the side clamp. An I-shaped handle is installed at the front end of the external pull rod.

[0006] First, operate the I-shaped handle to pull the outer pull rod, which in turn moves the side clamping plate outward. At this time, the return spring sleeved on the surface of the outer pull rod is deformed by the pressure of the side clamping plate and the inner wall of the protective shell. Place the motor at the center of the bottom of the inner cavity of the protective housing, then release the I-shaped handle. The return spring will restore its deformation and generate thrust, pushing the side clamps toward the motor until the heat-conducting plate is inserted and connected to the heat dissipation groove on the motor surface. When the drone is started and running using an electric drive, the output of the motor drives the propeller to rotate through the shaft, providing power to the drone. The heat generated during motor operation is transferred to the heat dissipation fins evenly arranged on its surface. After being dispersed by the heat dissipation fins, the heat enters the heat dissipation grooves formed between the heat dissipation fins. The heat in the heat sink is conducted to the heat-conducting top plate through the heat-conducting plate, and then to the heat-conducting inclined plate. The heat-conducting inclined plate transfers the heat to the air inlet end of the heat dissipation hole. The cooling fan starts under the drive of the drive unit, which accelerates the air flow inside the protective shell and exhausts the heat transferred by the heat conduction plate and the hot air in the protective shell from the exhaust end of the heat dissipation hole. The filter plate installed at the air outlet of the heat dissipation hole intercepts impurities in the incoming airflow, preventing external impurities from entering the inner cavity of the protective shell through the heat dissipation hole. When the motor needs maintenance, first remove the protective cover at the top of the protective housing to expose the motor and shaft to the outside of the protective housing. The operator pulls the outer pull rod through the operating handle, and the outer pull rod drives the side clamping plate to move in the direction away from the electric motor until the heat-conducting clamping plate on the side clamping plate is completely separated from the heat dissipation groove of the electric motor; The electric motor is taken out from the inner cavity of the protective housing for maintenance or replacement operations.

[0007] Preferably, guide grooves are formed around the upper surface of the protective cover plate, and the top ends of the guide grooves are slidably connected with guide blocks. The guide grooves distributed around the upper surface of the protective cover plate can provide a stable sliding track for the guide blocks, prevent the guide blocks from shifting or misaligning during sliding, and improve the accuracy of the movement of the guide blocks; the sliding connection structure between the guide blocks and the guide grooves is simple, directional movement can be realized without complex driving components, reducing the overall complexity of the structure, and the guide grooves and guide blocks distributed around can make the stress or movement around the protective cover plate more uniform, enhancing the structural synergy of the protective cover plate.

[0008] Preferably, insertion connecting rods are inserted and connected around the surface of the protective cover plate, and extrusion springs are additionally arranged between the inner ends of the insertion connecting rods and the inner wall of the protective cover plate. The arrangement of the extrusion springs can automatically provide reset power for the insertion connecting rods, ensuring that the insertion connecting rods can return to the initial position without manual operation after being stressed, improving the convenience of structure use; the insertion distribution of the insertion connecting rods around the surface of the protective cover plate enables the protective cover plate to obtain uniform connection or limit support in all peripheral directions, enhancing the stability when the protective cover plate is matched with other components; the combined structure of the insertion connecting rods and the extrusion springs has a certain buffering capacity, which can reduce the direct impact of external force on the inner wall of the protective cover plate and protect the internal structure of the protective cover plate.

[0009] Preferably, the lower surface of the guide block is connected with the inner end of the insertion connecting rod through the guide groove, and the outer end of the insertion connecting rod penetrates through the upper part of the inner wall of the protective housing and extends outward. Through the connection between the guide block and the insertion connecting rod, the sliding movement of the guide block is converted into the moving movement of the insertion connecting rod, realizing the linkage of the movements of the two, improving the cooperative working efficiency of each component of the structure, no need to separately set a driving mechanism for the insertion connecting rod, simplifying the structural design; the structure that the outer end of the insertion connecting rod penetrates through the upper part of the inner wall of the protective housing and extends outward can form a stable matching relationship between the insertion connecting rod and the protective housing, meanwhile, the outward extending outer end of the insertion connecting rod is convenient to connect with other external components or perform manual operation, expanding the functional application of the structure.

[0010] Preferably, guide rods are inserted and connected to the upper and lower parts of the center of the front and back surfaces of the protective housing, and the inner ends of the guide rods are connected to the upper and lower parts of the center of the front surface of the corresponding side clamps. The guide rods, positioned at two points on the upper and lower parts of the center of the front and back surfaces of the protective housing, guide the movement of the side clamps from two key positions, effectively preventing tilting, offsetting, or shaking of the side clamps during movement, ensuring the stability and accuracy of the side clamps' movements. Simultaneously, the guide rods connect the protective housing and the side clamps, enhancing the connection stability between them, preventing the side clamps from detaching from their preset positions due to force during operation, and improving the overall structural load-bearing capacity and reliability.

[0011] Preferably, the protective housing has a groove at the center of its front and back surfaces, and the I-shaped handle is positioned at the center of the groove's inner cavity. The groove at the center of the front and back surfaces of the protective housing provides dedicated installation space for the I-shaped handle, preventing it from protruding from the surface of the protective housing, reducing damage caused by bumps and friction, and lowering the probability of accidental contact by the operator, thus improving structural safety. Positioning the I-shaped handle at the center of the groove conforms to ergonomic operating habits, making it easy for the operator to quickly find and stably grip, improving the convenience of moving or operating the protective housing. Furthermore, the groove's limiting effect on the I-shaped handle ensures its stable position, preventing loosening or displacement during use.

[0012] Compared with the prior art, the present invention provides an electric drive for unmanned aerial vehicles, which has the following advantages: This drone uses an electric drive, with heat dissipation fins on the motor surface forming heat dissipation grooves. A heat-conducting plate is inserted and connected to the heat dissipation grooves, which can directly conduct heat within the heat dissipation grooves. In conjunction with a heat-conducting top plate and a heat-conducting inclined plate, the heat dissipation holes are precisely aligned with the air inlet end, constructing a multi-path precise heat conduction channel. The cooling fan inside the heat dissipation hole actively accelerates airflow, quickly dissipating the heat conducted by the heat-conducting components to the heat dissipation hole area. The filter plate at the air outlet can also prevent external dust from entering the protective shell, avoiding dust adhesion that affects heat dissipation, effectively solving the problem of high motor temperature, and ensuring the motor's output power and service life. The outer pull rod is linked to the side clamping plate, and the return spring on the surface provides elastic preload. When installing the motor, pulling the I-shaped handle will move the side clamping plate outward, making it easy to release the I-shaped handle after the motor is placed. The return spring pushes the side clamping plate back to its original position, allowing the heat-conducting plate to be accurately inserted into the motor's heat dissipation slot. The heat-conducting top plate fits tightly against the motor surface, achieving precise fit of the heat-conducting components without repeated adjustments. During maintenance, simply pulling the I-shaped handle will detach the side clamping plate from the motor. Compared to the traditional bolt fixing method, it eliminates the need to disassemble multiple fasteners, ensuring thermal stability and greatly simplifying the disassembly and assembly process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the separation structure of the protective shell and the protective cover plate of this utility model; Figure 3 This is a cross-sectional view of the protective cover plate of this utility model; Figure 4 This is a cross-sectional structural diagram of the protective shell of this utility model; Figure 5 This is a schematic diagram of the motor and its connection structure according to the present invention; Figure 6 This is a schematic diagram of the side clamp and its connection structure of the present invention.

[0014] In the diagram: 1. Protective shell; 2. Protective cover plate; 3. Guide groove; 4. Guide block; 5. Connecting rod; 6. Compression spring; 7. Motor; 8. Propeller; 9. Shaft; 10. Heat dissipation hole; 11. Filter plate; 12. Cooling fan; 13. Side clamp plate; 14. Heat-conducting plate; 15. Heat-conducting top plate; 16. Heat-conducting inclined plate; 17. Guide rod; 18. External pull rod; 19. Return spring; 20. I-shaped handle. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] This utility model provides a technical solution: an electric drive for a drone, comprising: (see details) Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The protective housing 1 and the protective cover plate 2 set at the top of the protective housing 1, the protective cover plate 2 has a propeller 8 added to the center of the upper surface, and a motor 7 is installed at the center of the bottom of the inner cavity of the protective housing 1. The surface of the motor 7 is evenly covered with heat dissipation fins, and the surface of the motor 7 forms heat dissipation grooves through the heat dissipation fins. A rotating shaft 9 is connected between the motor 7 and the propeller 8. Heat dissipation holes 10 are opened around the upper part of the protective housing 1. A filter plate 11 is installed at the air outlet of the heat dissipation hole 10, and a cooling fan 12 is installed in the inner cavity of the heat dissipation hole 10. Side clamp 13 is disposed at the front and rear ends of the inner cavity of the protective housing 1. A heat-conducting plate 14 is installed at the center of the inner side of the side clamp 13. The heat-conducting plate 14 is inserted and connected to the corresponding heat dissipation groove of the motor 7. A heat-conducting top plate 15 is installed on the upper surface of the heat-conducting plate 14. The inner inclined surface of the heat-conducting top plate 15 is tightly fitted with the inclined surface of the upper surface of the motor 7. A heat-conducting inclined plate 16 is installed on the upper surface of the heat-conducting top plate 15. The heat-conducting inclined plate 16 corresponds to the air inlet position of the corresponding heat dissipation hole 10. An outer pull rod 18 is inserted and connected to the center of the front and back sides of the protective housing 1, and the inner end of the outer pull rod 18 is aligned with the center of the front side of the corresponding side clamp 13. A return spring 19 is sleeved on the surface of the outer pull rod 18, and the front and rear ends of the return spring 19 are respectively in contact with the inner wall of the protective housing 1 and the front side of the side clamp 13. An I-shaped handle 20 is installed at the front end of the outer pull rod 18.

[0017] First, operate the I-shaped handle 20 to pull the outer pull rod 18, which in turn moves the side clamping plate 13 outward. At this time, the return spring 19 sleeved on the surface of the outer pull rod 18 is deformed by the pressure of the side clamping plate 13 and the inner wall of the protective shell 1. Place the motor 7 at the center of the bottom of the inner cavity of the protective housing 1, then release the I-shaped handle 20. The return spring 19 returns to its original shape and generates thrust, pushing the side clamp 13 to move closer to the motor 7 until the heat conduction plate 14 is inserted and connected to the heat dissipation groove on the surface of the motor 7. When the drone is started and running using an electric drive, the output of motor 7 drives propeller 8 to rotate through shaft 9, providing power to the drone. The heat generated during the operation of motor 7 will be transferred to the heat dissipation fins evenly arranged on its surface. After being dispersed by the heat dissipation fins, the heat will enter the heat dissipation grooves formed between the heat dissipation fins. The heat in the heat sink is conducted to the heat-conducting top plate 15 through the heat-conducting plate 14, and then to the heat-conducting inclined plate 16 through the heat-conducting top plate 15. The heat-conducting inclined plate 16 transfers the heat to the air inlet end of the heat dissipation hole 10. The cooling fan 12 is started by the drive component, which accelerates the air flow in the inner cavity of the protective shell 1 and exhausts the heat transferred by the heat conduction plate 16 and the hot air in the inner cavity of the protective shell 1 from the air outlet of the heat dissipation hole 10. The filter plate 11 installed at the air outlet of the heat dissipation hole 10 intercepts impurities in the incoming airflow, preventing external impurities from entering the inner cavity of the protective housing 1 through the heat dissipation hole 10. When maintenance is required on motor 7, first remove the protective cover 2 at the top of the protective housing 1 to expose motor 7 and shaft 9 to the outside of the protective housing 1. The operating handle 20 pulls the outer pull rod 18, which in turn moves the side clamping plate 13 away from the motor 7 until the heat-conducting plate 14 on the side clamping plate 13 is completely separated from the heat dissipation groove of the motor 7. Remove the motor 7 from the inner cavity of the protective housing 1 for inspection or replacement. The heat dissipation fins on the surface of motor 7 form heat dissipation grooves, which, together with the heat conduction path formed by heat conduction plate 14, heat conduction top plate 15 and heat conduction inclined plate 16, can quickly conduct the heat generated by motor 7 to heat dissipation hole 10; at the same time, cooling fan 12 accelerates the exhaust of hot air, forming a dual heat dissipation mode of heat conduction and forced exhaust, effectively reducing the operating temperature of motor 7, preventing motor 7 from malfunctioning due to overheating, and improving operating stability; The clamping structure consisting of the outer pull rod 18, the return spring 19, the side clamping plate 13 and the I-shaped handle 20 can move the side clamping plate 13 simply by pulling the outer pull rod 18 through the I-shaped handle 20. The installation and disassembly of the motor 7 can be completed without the need for complicated tools, which greatly simplifies the maintenance process and reduces the maintenance difficulty. The inner inclined surface of the heat-conducting top plate 15 is closely fitted with the inclined surface of the upper surface of the motor 7, which increases the contact area between the two, improves the efficiency of heat transfer from the motor 7 to the heat-conducting top plate 15, further optimizes the heat dissipation effect, and ensures that the motor 7 is in a stable operating temperature range for a long time. The reset spring 19 provides a continuous and stable clamping force to the side clamping plate 13, ensuring that the heat conduction plate 14 and the heat dissipation slot of the motor 7 are always stably inserted, while ensuring that the heat conduction top plate 15 and the motor 7 are tightly fitted, avoiding the impact of structural loosening on the heat conduction effect or the operating stability of the motor 7, thus improving the overall structural reliability of the electric drive.

[0018] Please see Figure 3 The protective cover 2 has guide grooves 3 around its upper surface, and guide blocks 4 are slidably connected to the top of the guide grooves 3. The guide blocks 4 can slide along the top of the guide grooves 3 around the upper surface of the protective cover 2; the guide grooves 3 provide a fixed path for the sliding of the guide blocks 4, restrict the direction of movement of the guide blocks 4, and ensure that the guide blocks 4 can only slide back and forth or in a directional manner along the extension direction of the guide grooves 3; the guide grooves 3 around the upper surface of the protective cover 2 can provide a stable sliding trajectory for the guide blocks 4, avoid the guide blocks 4 from deviating or misaligning when sliding, and improve the accuracy of the guide blocks 4's movement; the sliding connection structure between the guide blocks 4 and the guide grooves 3 is simple, and directional movement can be achieved without complex driving components, reducing the overall structural complexity, and the guide grooves 3 and guide blocks 4 distributed around the perimeter can make the force or movement around the protective cover 2 more uniform, enhancing the structural coordination of the protective cover 2.

[0019] Connecting rods 5 are inserted around the perimeter of the protective cover plate 2, and compression springs 6 are installed between the inner ends of the connecting rods 5 and the inner wall of the protective cover plate 2. When the connecting rods 5 are subjected to external force and move inward toward the protective cover plate 2, the inner ends of the connecting rods 5 compress the compression springs 6 and undergo elastic deformation. When the external force on the connecting rods 5 disappears, the compression springs 6 push the connecting rods 5 outward toward the protective cover plate 2 by their own elastic restoring force until the connecting rods 5 return to their initial insertion position. The compression springs 6 can automatically provide reset power for the connecting rods 5, ensuring that the connecting rods 5 can return to their initial position without manual operation after being subjected to force, thus improving the ease of use of the structure. The distribution of the connecting rods 5 around the perimeter of the protective cover plate 2 allows the protective cover plate 2 to obtain uniform connection or limiting support in the circumferential direction, enhancing the stability of the protective cover plate 2 when it is used with other components. The combined structure of the connecting rods 5 and the compression springs 6 has a certain buffering capacity, which can reduce the direct impact of external forces on the inner wall of the protective cover plate 2 and protect the internal structure of the protective cover plate 2.

[0020] The lower surface of the guide block 4 is connected to the inner end of the connecting rod 5 through the guide groove 3, and the outer end of the connecting rod 5 penetrates the upper part of the inner wall of the protective housing 1 and extends outward. When the guide block 4 slides along the guide groove 3 on the protective cover plate 2, the lower surface of the guide block 4 will drive the inner end of the connecting rod 5 to move synchronously through the groove space of the guide groove 3. During the movement of the connecting rod 5 with the guide block 4, its outer end will slide synchronously along the through hole at the upper part of the inner wall of the protective shell 1, realizing the position adjustment of the connecting rod 5 relative to the protective shell 1. During the linkage process of the guide block 4 and the connecting rod 5, the guide groove 3 continuously provides guidance for both, avoiding jamming or misalignment of the linkage action. Through the connection between the guide block 4 and the connecting rod 5, the sliding action of the guide block 4 is converted into the moving action of the connecting rod 5, realizing the linkage of the two actions, improving the collaborative working efficiency of the components of the structure, eliminating the need to set a separate drive mechanism for the connecting rod 5, and simplifying the structural design. The structure in which the outer end of the connecting rod 5 penetrates through the upper part of the inner wall of the protective shell 1 and extends outwards can make the connecting rod 5 and the protective shell 1 form a stable cooperation relationship. At the same time, the outwardly extending outer end of the connecting rod 5 is convenient to connect with other external components or to be manually operated, expanding the functional uses of the structure.

[0021] Please see Figure 4 , Figure 5 and Figure 6Guide rods 17 are inserted and connected to the upper and lower parts of the center of the front and back sides of the protective housing 1, and the inner ends of the guide rods 17 are connected to the upper and lower parts of the center of the front side of the corresponding side clamp 13. When the side clamp 13 needs to be adjusted to move closer to or further away from the protective housing 1, the upper and lower parts of the center of the front side of the side clamp 13 will drive the inner ends of the guide rods 17 connected thereto to move synchronously. Since the guide rods 17 are inserted and connected to the upper and lower parts of the center of the front and back sides of the protective housing 1, the guide rods 17 will slide along the corresponding insertion holes on the protective housing 1, providing a fixed direction for the movement of the side clamp 13. During the movement of the side clamp 13, the guide rods 17 always maintain the insertion connection with the protective housing 1 and the connection with the side clamp 13, ensuring... The side clamp 13 moves smoothly; the guide rod 17 is set at two points at the upper and lower parts of the center of the front and back of the protective shell 1, which can guide the movement of the side clamp 13 from the two key positions above and below, effectively preventing the side clamp 13 from tilting, deviating or shaking during the movement, and ensuring the smoothness and accuracy of the side clamp 13's movement; at the same time, the guide rod 17 connects the protective shell 1 and the side clamp 13, enhancing the connection stability between the two, preventing the side clamp 13 from leaving the preset position due to force during operation, and improving the load-bearing capacity and reliability of the overall structure.

[0022] The protective housing 1 has a groove at the center of its front and back sides, and the I-shaped handle 20 is located at the center of the groove cavity of the protective housing 1. When the protective housing 1 needs to be moved, transported, or operated as a whole, the operator can hold the I-shaped handle 20 located in the center of the groove on the front and back of the protective housing 1, and apply external force to move the protective housing 1 as a whole or complete a specific operation. The groove in the center of the front and back of the protective housing 1 accommodates and limits the I-shaped handle 20. In the non-operational state, the I-shaped handle 20 is always located in the center of the groove and will not shift its position due to slight external impacts. The groove in the center of the front and back of the protective housing 1 provides dedicated installation space for the I-shaped handle 20, preventing the I-shaped handle 20 from protruding from the surface of the protective housing 1, reducing damage to the I-shaped handle 20 caused by bumps and friction, and reducing the probability of the operator accidentally touching the I-shaped handle 20, thus improving structural safety. Setting the I-shaped handle 20 in the center of the groove conforms to ergonomic operating habits, making it easy for the operator to quickly find and hold it stably, improving the convenience of moving or operating the protective housing 1. Moreover, the limiting effect of the groove on the I-shaped handle 20 ensures the stability of the I-shaped handle 20 and prevents it from loosening or shifting during use.

[0023] In this scheme: the operator holds the I-shaped handle 20 located in the center of the groove in the center of the front and back of the protective housing 1 and pulls the I-shaped handle 20. The I-shaped handle 20 drives the outer pull rod 18 to move. The outer pull rod 18 drives the side clamping plates 13 at the front and rear ends of the center of the inner cavity of the protective housing 1 to move outward. At the same time, the upper and lower parts of the front center of the side clamping plates 13 drive the inner ends of the guide rods 17 inserted and connected to the upper and lower parts of the center of the front and back of the protective housing 1 to move synchronously. The guide rods 17 slide along the corresponding insertion holes on the protective housing 1. At this time, the return spring 19 sleeved on the surface of the outer pull rod 18 is deformed by the pressure of the side clamp plate 13 and the inner wall of the protective housing 1; then the motor 7 is placed at the center of the bottom of the inner cavity of the protective housing 1, the I-shaped handle 20 is released, the return spring 19 recovers its deformation and generates thrust, pushing the side clamp plate 13 to move closer to the motor 7, and the guide rod 17 slides and guides synchronously with the side clamp plate 13 until the heat-conducting plate 14 at the center of the inner side of the side clamp plate 13 is inserted and connected to the heat dissipation groove formed by the heat dissipation fins on the surface of the motor 7, and the inner inclined surface of the heat-conducting top plate 15 on the upper surface of the heat-conducting plate 14 is tightly attached to the inclined surface of the upper surface of the motor 7; The guide block 4 at the top of the guide groove 3 around the upper surface of the sliding protective cover 2 slides along the guide groove 3 and drives the inner end of the connecting rod 5 inserted around the surface of the protective cover 2 to move. The inner end of the connecting rod 5 compresses the compression spring 6 between it and the inner wall of the protective cover 2, causing it to undergo elastic deformation, thus setting the protective cover 2 at the top of the protective housing 1. Then, the sliding guide block 4 stops, and the compression spring 6 returns to its elastic deformation, pushing the connecting rod 5 to move outward of the protective cover 2. The outer end of the connecting rod 5 penetrates the upper part of the inner wall of the protective housing 1 and extends outward, completing the installation of the protective cover 2. At this time, the propeller 8 at the center of the upper surface of the protective cover 2 is in the preset position, and the heat-conducting inclined plate 16 on the upper surface of the heat-conducting top plate 15 corresponds to the air inlet position of the heat dissipation hole 10 opened around the upper part of the protective housing 1. When the drone is started by the electric drive, the output of the motor 7 drives the propeller 8 to rotate through the shaft 9. The heat generated by the motor 7 is transferred to the heat dissipation fins evenly arranged on its surface. After being dispersed by the heat dissipation fins, the heat enters the heat dissipation groove. Part of the heat in the heat dissipation groove is conducted to the heat dissipation top plate 15 through the heat dissipation plate 14, and then to the heat dissipation inclined plate 16 through the heat dissipation top plate 15. The heat dissipation inclined plate 16 transfers the heat to the air inlet of the heat dissipation hole 10. The cooling fan 12 inside the heat dissipation hole 10 is started by the drive component, which accelerates the air flow inside the protective shell 1. The heat transferred by the heat dissipation inclined plate 16 and the hot air in the protective shell 1 are discharged from the air outlet of the heat dissipation hole 10. The filter plate 11 installed at the air outlet of the heat dissipation hole 10 intercepts impurities in the incoming airflow. When maintenance of motor 7 is required, slide guide block 4. Guide block 4 slides along guide groove 3 and drives the inner end of plug rod 5 to move. Compression spring 6 is compressed and deformed. The outer end of plug rod 5 is retracted. Remove the protective cover plate 2 at the top of protective housing 1, so that motor 7 and shaft 9 are exposed outside of protective housing 1. Then grasp the I-shaped handle 20 in the center groove of the front and back of protective housing 1 and pull it. I-shaped handle 20 drives outer pull rod 18. Outer pull rod 18 drives side clamp plate 13 to move away from motor 7. Guide rod 17 slides synchronously with side clamp plate 13 until heat conduction plate 14 is completely separated from heat dissipation groove of motor 7. Finally, remove motor 7 from the inner cavity of protective housing 1 for inspection or replacement.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric drive for a drone, characterized in that, include: The protective housing (1) and the protective cover plate (2) are provided at the top of the protective housing (1). A propeller (8) is provided at the center of the upper surface of the protective cover plate (2). A motor (7) is installed at the center of the bottom of the inner cavity of the protective housing (1). Heat dissipation fins are evenly provided on the surface of the motor (7). Heat dissipation grooves are formed on the surface of the motor (7) through the heat dissipation fins. A rotating shaft (9) is connected between the motor (7) and the propeller (8). Heat dissipation holes (10) are provided around the upper part of the protective housing (1). A filter plate (11) is installed at the air outlet of the heat dissipation hole (10). A cooling fan (12) is installed in the inner cavity of the heat dissipation hole (10). Side clamp (13) is set at the front and rear ends of the inner cavity of the protective shell (1), and a heat-conducting plate (14) is installed at the center of the inner side of the side clamp (13). The heat-conducting plate (14) is inserted and connected to the corresponding heat dissipation groove of the motor (7), and a heat-conducting top plate (15) is installed on the upper surface of the heat-conducting plate (14). The inner inclined surface of the heat-conducting top plate (15) is closely attached to the inclined surface of the upper surface of the motor (7), and a heat-conducting inclined plate (16) is installed on the upper surface of the heat-conducting top plate (15). The heat-conducting inclined plate (16) corresponds to the air inlet position of the corresponding heat dissipation hole (10). An outer pull rod (18) is inserted and connected to the center of the front and back sides of the protective housing (1), and the inner end of the outer pull rod (18) is aligned with the center of the front side of the corresponding side clamp (13). A return spring (19) is sleeved on the surface of the outer pull rod (18), and the front and rear ends of the return spring (19) are respectively attached to the inner wall of the protective housing (1) and the front side of the side clamp (13). An I-shaped handle (20) is installed at the front end of the outer pull rod (18).

2. The electric drive for a drone according to claim 1, characterized in that: The upper surface of the protective cover (2) is provided with guide grooves (3) around the perimeter, and a guide block (4) is slidably connected to the top of the guide grooves (3).

3. An electric drive for a drone according to claim 2, characterized in that: The protective cover (2) is provided with connecting rods (5) inserted around its surface, and a compression spring (6) is provided between the inner end of the connecting rod (5) and the inner wall of the protective cover (2).

4. An electric drive for a drone according to claim 3, characterized in that: The lower surface of the guide block (4) is connected to the inner end of the connecting rod (5) through the guide groove (3), and the outer end of the connecting rod (5) penetrates the upper part of the inner wall of the protective shell (1) and extends outward.

5. An electric drive for a drone according to claim 1, characterized in that: Guide rods (17) are inserted and connected to the upper and lower parts of the front and back center of the protective shell (1), and the inner end of the guide rods (17) is connected to the upper and lower parts of the front center of the corresponding side clamp (13).

6. An electric drive for a drone according to claim 1, characterized in that: The protective housing (1) has a groove at the center of its front and back sides, and the I-shaped handle (20) is located at the center of the groove cavity of the corresponding protective housing (1).

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