High-protection unmanned aerial vehicle motor

Abstract

The invention discloses a high-protection unmanned aerial vehicle motor, relates to the technical field of unmanned aerial vehicle motors, and solves the problems that in order to achieve heat dissipation, most of existing unmanned aerial vehicle outer rotor motors are not subjected to protection treatment, or protection measures are additionally taken, a plurality of connecting structures are additionally arranged, and the motor is abnormal due to damage of the connecting structures. A high-protection unmanned aerial vehicle motor comprises a rotor, a plurality of heat dissipation fins are fixed to the outer surface of the rotor in an annular array mode, a flow guide groove is formed between every two adjacent heat dissipation fins, a center shaft is installed in the middle of the rotor in a penetrating mode, and a nut is detachably installed at the bottom end of the center shaft; and a magnet mounting column is detachably mounted at the bottom end of the nut. The ball bearings and the heat-conducting annular strips which are distributed in an annular array mode are arranged on the upper surface and the side face of the upper end cover correspondingly and used for guaranteeing flowing of airflow in the motor, so that rapid dissipation of heat in the motor is achieved while motor protection is guaranteed, and faults caused by internal overheating when the motor runs are avoided.

Description

Technical Field

[0001] This invention relates to the field of drone motor technology, specifically a high-protection drone motor. Background Technology

[0002] Unmanned aerial vehicles (UAVs), abbreviated as URMs, are devices operated using radio remote control equipment and onboard program control devices, or operated autonomously by an onboard computer, either completely or intermittently. UAVs are widely used in aerial photography, agriculture, plant protection, miniature selfies, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying, news reporting, power line inspection, disaster relief, film and television shooting, and creating romance, among other fields. The power output of flying UAVs relies on motors, and the UAV motor, as the core power component of the UAV, plays a crucial role.

[0003] To achieve heat dissipation, most existing external rotor motors for drones do not have protective measures or additional protective measures. The addition of multiple connecting structures can lead to motor malfunctions if the connecting structures are damaged. Therefore, this does not meet the current requirements. In response, we have proposed a high-protection drone motor. Summary of the Invention

[0004] The purpose of this invention is to provide a highly protected drone motor to solve the problems mentioned in the background art, such as the fact that most existing drone external rotor motors do not have protective treatment or additional protective measures in order to dissipate heat, and that the addition of multiple connection structures can lead to motor abnormalities due to damage to the connection structures.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-protection drone motor, comprising a rotor, wherein multiple heat dissipation fins are fixed in a ring array on the outer surface of the rotor, and guide grooves are provided between adjacent heat dissipation fins; a central shaft is installed through the middle of the rotor, and a nut is detachably installed at the bottom end of the central shaft; a magnet mounting post is detachably installed at the bottom end of the nut; an iron core frame is fixed at the bottom end of the rotor, and a magnetic encoder is provided at the bottom of the iron core frame; a dustproof pad is provided below the magnetic encoder, and the dustproof pad is connected to the iron core frame by screws; a ball bearing is provided on the outer side of the bottom end of the rotor, and a lower end cover is provided on the outer side of the ball bearing; a heat-conducting annular strip is provided on the inner side of the lower end cover; a shell is connected to the outer top of the lower end cover by screws; a permanent magnet is provided between the shell and the rotor; a silicon steel sheet is provided between the permanent magnet and the shell; an upper end cover is provided on the inner side of the top of the shell, and the center of the upper end cover is penetrated by the top end of the central shaft.

[0006] Preferably, the outer surface of the housing is provided with a plurality of heat dissipation strips, which are distributed in a linear array along the axial direction of the housing.

[0007] Preferably, the heat dissipation strip has a U-shaped cross-section, and the spacing between adjacent heat dissipation strips is equal to the thickness of the heat dissipation strip.

[0008] Preferably, the outer surface of the housing is provided with a plurality of drainage grooves, which are distributed in a positive linear array along the axial direction of the housing.

[0009] Preferably, the inner side of the drainage groove is provided with a plurality of heat dissipation annular fins distributed at equal intervals, and the heat dissipation annular fins are fixedly connected to the outer shell.

[0010] Preferably, the upper cover includes a cover body, the upper surface of which is provided with a plurality of top air guide holes arranged in a ring array around its axis, the side surface of which is provided with a plurality of side air guide holes arranged in a ring array around its axis, and the side surface of which is also provided with a through air hole.

[0011] Preferably, the side air vents and the top air vents both penetrate the cover, and the inner sides of the side air vents, the through air vents, and the top air vents are detachably inlaid with dustproof sheets, which are made of highly breathable sponge or gauze.

[0012] Preferably, the bottom end of the cover is provided with a plurality of screw holes arranged in a ring array around its axis, and screws are inserted into the inside of the screw holes. The cover is fixed to the outer shell by the screws, and a plurality of heat-conducting plates arranged in a ring array around its axis are fixed on the bottom surface of the cover.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The present invention provides ball bearings and heat-conducting ring strips arranged in annular array on the upper surface and side of the upper end cover to ensure airflow inside the motor, thereby protecting the motor while achieving rapid dissipation of internal heat and preventing motor failure due to internal overheating during operation.

[0015] 2. This invention improves the strength of the motor by adding silicon steel sheets between the outer shell and the permanent magnet. When the outer shell is impacted, the silicon steel sheets offset the impact and protect the permanent magnet, thereby preventing the motor from being damaged by external impact and improving the motor's protective performance.

[0016] 3. This invention utilizes heat dissipation strips to increase the surface area of ​​the outer surface of the casing and increase the contact surface between the airflow and the casing for heat dissipation, thereby accelerating the dissipation of heat absorbed by the casing from inside the motor.

[0017] 4. In this invention, when the airflow flows along the outer surface of the housing, part of the airflow is guided into the flow channel. When the airflow flows inside the flow channel, it comes into contact with the heat dissipation ring fins, thereby using the heat dissipation ring fins to accelerate the heat loss inside the housing and improve the heat dissipation efficiency of the motor. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a cross-sectional view of the entire invention;

[0020] Figure 3 This is a schematic diagram of the structure of the upper end cap of the present invention;

[0021] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle;

[0022] Figure 5 This is a schematic diagram of the rotor structure of the present invention;

[0023] Figure 6 This is a bottom view of the cover of the present invention;

[0024] Figure 7 This is a partial structural diagram of the outer casing of the present invention;

[0025] Figure 8 for Figure 7 Enlarged view of the structure at point B.

[0026] In the diagram: 1. Upper end cover; 101. Cover body; 102. Side vent; 103. Top vent; 104. Heat-conducting plate; 105. Through vent; 106. Screw hole; 2. Central shaft; 3. Outer shell; 4. Rotor; 5. Nut; 6. Magnet mounting post; 7. Iron core frame; 8. Magnetic encoder; 9. Dustproof pad; 10. Permanent magnet; 11. Heat dissipation strip; 12. Heat-conducting ring strip; 13. Ball bearing; 14. Lower end cover; 15. Silicon steel sheet; 16. Guide groove; 17. Heat dissipation fins; 18. Drainage groove; 19. Heat dissipation ring plate. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] like Figures 1 to 5As shown, a high-protection drone motor includes a rotor 4. Multiple heat dissipation fins 17 are fixed in a ring array on the outer surface of the rotor 4. A guide groove 16 is provided between adjacent heat dissipation fins 17. A central shaft 2 is installed through the middle of the rotor 4. A nut 5 is detachably installed at the bottom end of the central shaft 2. A magnet mounting post 6 is detachably installed at the bottom end of the nut 5. An iron core frame 7 is fixed to the bottom end of the rotor 4. A magnetic encoder 8 is provided at the bottom of the iron core frame 7. A dustproof pad 9 is provided below the magnetic encoder 8, and the dustproof pad 9 is connected to the iron core frame 7 by screws. A ball bearing 13 is provided on the outer side of the bottom end of the rotor 4. A lower end cover 14 is provided on the outer side of the ball bearing 13. A heat-conducting annular strip 12 is provided on the inner side of the lower end cover 14. A housing 3 is connected to the outer side of the top of the lower end cover 14 by screws. A permanent magnet 10 is provided between the housing 3 and the rotor 4. A silicon steel sheet 15 is provided between the permanent magnet 10 and the housing 3. An upper end cover 1 is provided on the inner side of the top of the housing 3. The center of the upper end cover 1 is penetrated by the top of the central shaft 2.

[0029] like Figure 1 , Figure 6 As shown, the upper cover 1 includes a cover body 101. The upper surface of the cover body 101 is provided with a plurality of top air guide holes 103 arranged in a ring array around its axis. The side of the cover body 101 is provided with a plurality of side air guide holes 102 arranged in a ring array around its axis. The side of the cover body 101 is also provided with a through air hole 105. The side air guide holes 102 and the top air guide holes 103 all penetrate the cover body 101. The side air guide holes 102, the through air holes 105 and the top air guide holes 103 are all detachably embedded with dustproof sheets. The dustproof sheets are made of highly breathable sponge or gauze, which ensures airflow exchange between the inside and outside of the cover body 101 while preventing external dust from entering the motor with the airflow.

[0030] The bottom end of the cover 101 is provided with a plurality of screw holes 106 arranged in a ring around its axis. Screws are inserted into the inside of the screw holes 106. The cover 101 is fixed to the outer shell 3 by screws. A plurality of heat-conducting plates 104 arranged in a ring around its axis are fixed on the bottom surface of the cover 101. The heat-conducting plates 104 increase the surface area of ​​the heat dissipation strip 11, accelerate the absorption of heat inside the motor by the cover 101, and increase the contact area between the cover 101 and the incoming airflow, thereby improving the overall heat dissipation performance of the motor.

[0031] First implementation example Figure 2 and Figure 3 As shown, the outer surface of the housing 3 is provided with multiple heat dissipation strips 11. The heat dissipation strips 11 are arranged in a linear array along the axial direction of the housing 3. The cross-section of the heat dissipation strips 11 is U-shaped. The spacing between adjacent heat dissipation strips 11 is the thickness of the heat dissipation strips 11. The heat dissipation strips 11 are used to increase the surface area of ​​the outer surface of the housing 3 and increase the contact heat dissipation surface between the airflow and the housing 3, thereby accelerating the dissipation of heat absorbed by the housing 3 from the inside of the motor.

[0032] Second implementation example Figure 7 and Figure 8 As shown, the outer surface of the housing 3 is provided with multiple drainage grooves 18, which are arranged in a positive linear array along the axial direction of the housing 3. The inner side of the drainage grooves 18 is provided with multiple heat dissipation annular fins 19 distributed at equal intervals. The heat dissipation annular fins 19 are fixedly connected to the housing 3. When the airflow flows along the outer surface of the housing 3, part of the airflow is guided into the drainage grooves 18. When the airflow flows inside the drainage grooves 18, it contacts the heat dissipation annular fins 19, thereby using the heat dissipation annular fins 19 to accelerate the heat loss inside the housing 3 and improve the heat dissipation efficiency of the motor.

[0033] Working principle: When the motor is running, the rotor 4 rotates, driving the central shaft 2 to rotate. The central shaft 2 then outputs power outward through its connected transmission shaft. This power is then transmitted to the propeller via the drone's transmission components, thus enabling the drone to operate. During the rotation and power output of the rotor 4, heat is generated inside the motor. This heat is transferred to the lower end cover 14, the upper end cover 1, and the outer shell 3. After absorbing heat, the upper end cover 1, the outer shell 3, and the lower end cover 14 are then exposed to airflow outside the motor. This airflow then carries away the heat absorbed inside the lower end cover 14 and the outer shell 3. When the airflow reaches the upper cover 1, it enters and exits the motor through the side air guide hole 102 and the top air guide hole 103. During the flow of the airflow through the side air guide hole 102 and the top air guide hole 103, the airflow guides the hot air between the upper cover 1 and the rotor 4, causing the hot air to flow to the outside of the motor. At the same time, when the external airflow flows through the heat-conducting plate 104, it can absorb and dissipate the heat of the cover 101. This ensures the flow of air inside the motor, thereby protecting the motor and achieving rapid dissipation of heat inside the motor, preventing the motor from malfunctioning due to internal overheating during operation.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-protection unmanned aerial vehicle motor, comprising a rotor (4), characterized in that: The outer surface of the rotor (4) is fixed with a ring array of multiple heat dissipation fins (17), and a guide groove (16) is provided between adjacent heat dissipation fins (17). A central shaft (2) is installed through the middle of the rotor (4). A nut (5) is detachably installed at the bottom end of the central shaft (2). A magnet mounting post (6) is detachably installed at the bottom end of the nut (5). An iron core frame (7) is fixed at the bottom end of the rotor (4). A magnetic encoder (8) is provided at the bottom of the iron core frame (7). A dustproof pad (9) is provided below the magnetic encoder (8), and the dustproof pad (9) is attached to the iron core frame. (7) The rotor (4) is connected by screws. A ball bearing (13) is provided on the outer side of the bottom end. A lower end cover (14) is provided on the outer side of the ball bearing (13). A heat-conducting annular strip (12) is provided on the inner side of the lower end cover (14). A shell (3) is connected to the outer side of the top end of the lower end cover (14) by screws. A permanent magnet (10) is provided between the shell (3) and the rotor (4). A silicon steel sheet (15) is provided between the permanent magnet (10) and the shell (3). An upper end cover (1) is provided on the inner side of the top end of the shell (3). The center of the upper end cover (1) is penetrated by the top end of the central shaft (2).

2. The high-protection UAV motor according to claim 1, characterized in that: The outer surface of the outer shell (3) is provided with a plurality of heat dissipation strips (11), which are arranged in a linear array along the axial direction of the outer shell (3).

3. The high-protection UAV motor according to claim 2, characterized in that: The heat dissipation strip (11) has a U-shaped cross section, and the spacing between adjacent heat dissipation strips (11) is equal to the thickness of the heat dissipation strip (11).

4. The high-protection UAV motor according to claim 1, characterized in that: The outer surface of the outer shell (3) is provided with a plurality of drainage grooves (18), which are arranged in a positive linear array along the axial direction of the outer shell (3).

5. A high-protection UAV motor according to claim 4, characterized in that: The inner side of the drainage groove (18) is provided with a plurality of heat dissipation annular fins (19) distributed at equal intervals, and the heat dissipation annular fins (19) are fixedly connected to the outer shell (3).

6. A high-protection UAV motor according to claim 1, characterized in that: The upper cover (1) includes a cover body (101). The upper surface of the cover body (101) is provided with a plurality of top air guide holes (103) arranged in a ring array around its axis. The side of the cover body (101) is provided with a plurality of side air guide holes (102) arranged in a ring array around its axis. The side of the cover body (101) is also provided with a through air hole (105).

7. A high-protection UAV motor according to claim 6, characterized in that: The side air vent (102) and the top air vent (103) both penetrate the cover (101), and the side air vent (102), the through air vent (105) and the top air vent (103) are all detachably inlaid with dustproof sheets, which are made of highly breathable sponge or gauze.

8. A high-protection UAV motor according to claim 6, characterized in that: The bottom end of the cover (101) is provided with a plurality of screw holes (106) arranged in a ring array around its axis. Screws are inserted inside the screw holes (106). The cover (101) is fixed to the outer shell (3) by screws. The bottom surface of the cover (101) is fixed with a plurality of heat-conducting plates (104) arranged in a ring array around its axis.

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