Unmanned aerial vehicle motor heat dissipation structure

Abstract

The utility model discloses a motor heat dissipation structure of an unmanned aerial vehicle, and relates to the field of motor heat dissipation. The motor comprises a machine shell, an iron core and a middle column, magnetic sheets are arranged on the inner side of the machine shell at equal intervals, a rear cover plate is arranged at the top of the inner side of the machine shell, a groove-shaped structure allowing the multiple sets of magnetic sheets to be inserted and limited is formed in the bottom of the rear cover plate, and multiple sets of rear cover heat dissipation ribs are clamped in the rear cover plate in a circumferential array mode. The outer side of the bottom of the middle column is sleeved with a large bearing, the outer side of the large bearing is connected with a front cover plate in a clamped mode, the front cover plate is clamped to the bottom of the machine shell through four sets of clamping pieces on the top and is in fastened connection with the bottom of the machine shell through screws, and a plurality of sets of front cover heat dissipation ribs are clamped to the inner side of the front cover plate in a circumferential array mode. According to the utility model, a large ventilation opening can be provided for the 22250 brushless motor, so that a better heat dissipation effect is achieved, and meanwhile, the heat dissipation assembly can be quickly installed, so that the requirements of different customers can be met.

Description

Technical Field

[0001] The utility model relates to the field of motor heat dissipation, in particular to a heat dissipation structure for a motor of a drone. Background Art

[0002] Brushless motors generate heat during operation. This is due to electromagnetic induction and current, which lead to resistance loss, core hysteresis loss, windage loss and other reasons. When the ambient temperature rises, the load increases, and the speed increases, the temperature of the brushless motor will also rise. When the temperature rises to a certain level, it will have a negative impact on the performance and life of the brushless motor, such as weakening of magnetic force and burning of the electric module.

[0003] However, the traditional brushless motor has small heat dissipation vents, which can easily cause the motor to overheat. When the temperature rises to a certain level, it will have a negative impact on the performance and life of the brushless motor, such as weakening of the magnetic force and burning of the electric module. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a UAV motor heat dissipation structure, which can provide a large vent for the 22250 brushless motor, thereby achieving better heat dissipation effect. At the same time, the heat dissipation component can be quickly installed, thereby meeting the needs of different customers.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heat dissipation structure for a drone motor, comprising a casing, an iron core and a center column, magnetic sheets are arranged at equal intervals on the inner side of the casing, and a rear cover is provided on the inner top of the casing, and a groove structure is provided at the bottom of the rear cover for plugging and limiting multiple groups of magnetic sheets, the interior of the rear cover is clamped with several groups of rear cover heat dissipation ribs in a circular array, and a slope structure is provided in the middle of the rear cover heat dissipation ribs, a large bearing is sleeved on the outer side of the bottom of the center column, and a front cover is clamped on the outer side of the large bearing, the front cover is clamped with the bottom of the casing through four groups of cards on the top, and is fastened with screws, and several groups of front cover heat dissipation ribs are clamped on the inner side of the front cover in a circular array.

[0006] By adopting the above technical solution, the design of the rear cover not only simplifies the assembly process, but also improves the stability of the overall structure. Several groups of rear cover heat dissipation ribs are used to dissipate heat from the inside of the motor. The large bearing sleeved on the outside of the bottom of the center column and the clip-on design of the front cover ensure smooth rotation and facilitate maintenance and replacement. Several groups of front cover heat dissipation ribs are used to bring external room temperature air into the entire motor, thereby providing a cooling effect.

[0007] Furthermore, a magnetic sheet slot is provided at the inner bottom of the housing, and a slot-shaped structure for inserting and limiting multiple groups of magnetic sheets is provided at the top of the magnetic sheet slot.

[0008] By adopting the above technical solution, by setting a magnetic sheet slot at the inner bottom of the casing, the utility model provides a stable bottom support for the magnetic sheet. The groove structure opened on the top of the magnetic sheet slot not only echoes the groove structure at the bottom of the rear cover, forming a double fixation of the magnetic sheet, but also further simplifies the installation process of the magnetic sheet.

[0009] Furthermore, an iron core is provided inside the housing and on the inner side of the magnetic sheet, and a center column is clamped inside the iron core.

[0010] By adopting the above technical solution, an iron core is arranged inside the casing and on the inner side of the magnetic sheet. The utility model effectively utilizes the magnetic conductivity of the iron core and enhances the magnetic field strength inside the motor. A center column is clamped inside the iron core. This design not only ensures the stability and position accuracy of the center column, but also facilitates the conduction and dissipation of heat inside the motor through the iron core and the center column.

[0011] Furthermore, two groups of bearing steel sleeves are provided on the inner side of the center column, and two groups of rotating bearings are respectively sleeved and rotated inside the two groups of bearing steel sleeves.

[0012] By adopting the above technical solution, by arranging two sets of bearing steel sleeves on the inner side of the center column, the utility model provides stable support and precise positioning for the rotating bearings. Two sets of rotating bearings are respectively sleeved inside the two sets of bearing steel sleeves. This dual-bearing design significantly improves the load-bearing capacity and rotation stability of the motor.

[0013] Furthermore, a rear heat dissipation rib pressing plate is fastened to the top of the rear cover plate by screws.

[0014] By adopting the above technical solution, the utility model realizes stable fixation of the heat dissipation ribs of the rear cover by fastening the rear heat dissipation rib pressure plate with screws on the top of the rear cover.

[0015] Furthermore, the four sets of rotating bearings inside the center column are inserted with shaft cores, and a shaft lock cover plate is provided at the bottom of the rotating bearing at the lower end of the inner side of the center column and is threadedly connected to the bottom of the shaft core.

[0016] By adopting the above technical solution, the shaft core is inserted into the four sets of rotating bearings inside the center column, and the utility model ensures the stability and coaxiality of the shaft core during the operation of the motor. A shaft lock cover is provided at the bottom of the rotating bearing at the lower end of the inner side of the center column, and is threadedly connected to the bottom of the shaft core. This design further enhances the stability of the shaft core.

[0017] Furthermore, a first slot is provided on the inner side of the bottom of the center column, and the stator bracket is clamped on the inner side of the first slot. A second slot is provided on the bottom surface of the center column, and the bearing cover is clamped on the inner side of the second slot, and the two are fastened together by screws.

[0018] By adopting the above technical solution, by opening a first slot on the inner side of the bottom of the center column and clamping the stator bracket on the inner side of the slot, the utility model realizes the rapid positioning and stable installation of the stator bracket. A second slot is also opened on the bottom surface of the center column for clamping the bearing cover and fastening it with screws. This design not only provides stable support for the bearing cover, but also effectively prevents it from loosening or shifting due to vibration generated by the operation of the motor.

[0019] Furthermore, a front heat dissipation rib pressure plate is fastened to the bottom of the front cover plate via threads.

[0020] By adopting the above technical solution, the front heat dissipation rib pressure plate is fastened with threads at the bottom of the front cover, and the utility model provides a stable fixing method for the front cover heat dissipation rib.

[0021] In summary, the present invention has the following beneficial effects:

[0022] 1. The utility model is provided with a rear cover, rear cover heat dissipation ribs and a rear heat dissipation rib pressing plate. The rear cover heat dissipation ribs have an inclined structure in the middle, which can discharge the internal hot air when rotating, thereby dissipating heat inside the housing. The rear heat dissipation rib pressing plate can stably fix several groups of rear cover heat dissipation ribs inside the rear cover;

[0023] 2. The utility model is provided with a front cover, a front cover heat dissipation rib and a front heat dissipation rib pressure plate. The front cover heat dissipation rib has an inclined structure opened in the middle. When it rotates, it can send the outside cold air into the interior of the casing and cooperate with several groups of rear cover heat dissipation ribs to achieve the function of quickly dissipating heat inside the casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the exploded structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the split structure of the motor structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the disassembled structure of the heat dissipation structure of the utility model;

[0027] Figure 4 It is a schematic diagram of the overall structure of the utility model.

[0028] In the figure: 1. Casing; 2. Magnetic sheet; 3. Magnetic sheet slot; 4. Iron core; 5. Center column; 6. Rotating bearing; 7. Bearing steel sleeve; 8. Rear cover; 9. Rear cover heat dissipation rib; 10. Rear heat dissipation rib pressure plate; 11. Shaft core; 12. Lock shaft cover; 13. Stator bracket; 14. Bearing cover; 15. Large bearing; 16. Front cover; 17. Front cover heat dissipation rib; 18. Front heat dissipation rib pressure plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the internal parts of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The following describes an embodiment of the present invention based on its overall structure.

[0033] In this embodiment:

[0034] A UAV motor heat dissipation structure, such as Figure 1-Figure 4 As shown, it includes a casing 1, an iron core 4 and a center column 5. Magnetic sheets 2 are arranged at equal intervals on the inner side of the casing 1, and a rear cover 8 is provided on the inner top of the casing 1. A groove structure for inserting and limiting multiple groups of magnetic sheets 2 is provided at the bottom of the rear cover 8. Several groups of rear cover heat dissipation ribs 9 are clamped in a circumferential array inside the rear cover 8, and a slope structure is provided in the middle of the rear cover heat dissipation rib 9. A large bearing 15 is sleeved on the outer side of the bottom of the center column 5, and a front cover 16 is clamped on the outer side of the large bearing 15. The front cover 16 is clamped with the bottom of the casing 1 through four groups of cards on the top and is fastened with screws. Several groups of front cover heat dissipation ribs 17 are clamped in a circumferential array on the inner side of the front cover 16.

[0035] Among them, the stable installation and limitation of the magnetic sheet 2 are achieved through the equally spaced magnetic sheets 2 and the specifically structured rear cover 8. Several groups of rear cover heat dissipation ribs 9 are engaged inside the rear cover 8. The inclined structure arranged in the middle thereof can effectively guide the airflow when the motor is working to achieve the heat dissipation function, thereby improving the stability and durability of the motor during high-load operation. The front cover 16 is engaged with the bottom of the casing 1 through the top card, further strengthening the rigidity of the overall structure, and the screw fastening connection provides additional safety. The front cover heat dissipation ribs 17 engaged on the inner side of the front cover 16 form a symmetrical heat dissipation layout with the rear cover heat dissipation ribs 9, which effectively increases the heat dissipation area and improves the heat dissipation efficiency, which is crucial for the performance of the drone motor in continuous high-intensity working scenarios.

[0036] See Figure 1 and Figure 2 A magnetic sheet slot 3 is provided at the bottom inner side of the housing 1, and a slot-shaped structure for inserting and limiting multiple sets of magnetic sheets 2 is provided at the top of the magnetic sheet slot 3;

[0037] Among them, the design of the magnetic sheet slot 3 enables the magnetic sheet 2 to be effectively limited after insertion, preventing it from shifting or falling off due to vibration generated by the operation of the motor, thereby ensuring the stability of the magnetic field inside the motor and improving the operating efficiency of the motor.

[0038] See Figure 1 and Figure 2 An iron core 4 is provided inside the housing 1 and on the inner side of the magnetic sheet 2, and a center column 5 is clamped inside the iron core 4;

[0039] Among them, the close fit between the iron core 4 and the magnetic sheet 2 enables the motor to generate greater torque during operation, thereby improving the output power and working efficiency of the motor. The center column 5 is an important supporting component of the motor. The improvement of its stability and heat dissipation performance plays a vital role in ensuring the reliability and durability of the motor under high load and long-term operation.

[0040] See Figure 1 and Figure 2 , two sets of bearing steel sleeves 7 are provided on the inner side of the middle column 5, and two sets of rotating bearings 6 are respectively sleeved and rotated inside the two sets of bearing steel sleeves 7;

[0041] Among them, the high hardness and wear resistance of the bearing steel sleeve 7 ensure that the rotating bearing 6 can remain stable during high-speed rotation, reducing the energy loss caused by friction and vibration, thereby improving the operating efficiency of the motor. The two sets of rotating bearings 6 can share the load during motor operation, reducing the wear rate of a single bearing and extending the service life of the bearing.

[0042] See Figure 1 and Figure 2, the top of the rear cover plate 8 is fastened with a rear heat dissipation rib pressing plate 10 by screws;

[0043] Among them, the rear heat dissipation rib pressing plate 10 effectively presses the rear cover heat dissipation rib 9 onto the rear cover plate 8 to prevent it from loosening or falling off due to vibration during motor operation, thereby ensuring the stability and durability of the heat dissipation structure.

[0044] See Figure 1 、 Figure 2 and Figure 4 , the four sets of rotating bearings 6 inside the middle column 5 are plugged with the shaft core 11, and the bottom of the rotating bearing 6 at the lower end of the inner side of the middle column 5 is provided with a shaft lock cover plate 12, which is threadedly connected to the bottom of the shaft core 11;

[0045] Among them, the plug-in method enables the shaft core 11 to rotate smoothly in the rotating bearing 6, reducing friction and energy loss, and improving the operating efficiency of the motor. The shaft lock cover 12 not only provides additional support for the shaft core 11, but also is tightly combined with the shaft core 11 through a threaded connection, effectively preventing the shaft core 11 from shaking and deflecting during high-speed rotation. At the same time, the top of the shaft core 11 is clamped and fastened to the top of the rear cover 8 by screws.

[0046] See Figure 1 、 Figure 2 and Figure 4 A first slot is provided on the inner side of the bottom of the center column 5, and the stator bracket 13 is connected to the inner side of the first slot. A second slot is provided on the bottom surface of the center column 5, and the bearing cover 14 is connected to the inner side of the second slot and fastened by screws.

[0047] Among them, the design of the first slot enables the stator bracket 13 to be accurately embedded in the predetermined position of the center column 5, thereby ensuring the accuracy and consistency of the internal structure of the motor. The stable installation of the bearing cover 14 is crucial to protecting the internal bearing structure. It can reduce the intrusion of dust and impurities, reduce the wear rate of the bearing, and thus extend the service life of the motor.

[0048] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the bottom of the front cover plate 16 is fastened with a front heat dissipation rib pressing plate 18 by threads;

[0049] The screw tightening ensures that the front cover heat dissipation ribs 17 will not be displaced or fall off due to vibration or impact during the operation of the motor, thereby maintaining the integrity and effectiveness of the heat dissipation structure.

[0050] The implementation principle of the present utility model is as follows: first, fix the rear cover plate 8 to the top of the casing 1 by screws, and insert several groups of rear cover heat dissipation ribs 9 into the card slots opened inside the rear cover plate 8 respectively, and then limit and tighten them through the rear heat dissipation rib pressure plate 10, and screw the rear heat dissipation rib pressure plate 10 to the rear cover plate 8, and then install the magnetic sheet 2 on the inner side of the casing 1 through the card slot opened at the bottom of the rear cover plate 8, and then use the magnetic sheet card slot 3 to provide a limit card engagement for the bottom of the magnetic sheet 2, and then put the iron core 4 into the inner side of the magnetic sheet 2, and clamp the middle column 5 with the inner side of the iron core 4 through the outer card strip, put the two groups of rotating bearings 6 into the interior of the bearing steel sleeve 7, and put the two groups of bearing steel sleeves 7 that have been assembled into the interior of the middle column 5, and use the locking shaft cover plate 12 to provide support for the four groups of rotating bearings 6 and the two groups of bearing steel sleeves 7, then put the stator bracket 13 into the first card slot opened on the inner side of the bottom of the middle column 5, and then put the bearing cover 1 4 is inserted into the second card slot opened on the bottom surface of the middle column 5, and is fastened to the middle column 5 by two sets of screws, thereby providing support for the rotating bearing 6, bearing steel sleeve 7, lock shaft cover plate 12 and stator bracket 13 above. Finally, the large bearing 15 is inserted into the bottom outer side of the middle column 5, and the front cover plate 16 is clamped at the bottom of the large bearing 15, and the four sets of cards on the top of the front cover plate 16 are engaged with the bottom of the casing 1, and are still fastened by screws. Then, several sets of front cover heat dissipation ribs 17 are clamped into the card slots inside the front cover plate 16, and the front heat dissipation rib pressure plate 18 and the front cover plate 16 are fastened by screws to provide limited fastening for the front cover heat dissipation ribs 17. After assembly, the shaft core 11 is prevented from the inside of the middle column 5, and the top of the shaft core 11 is fastened to the rear cover plate 8 by screws, and the bottom of the shaft core 11 is fastened to the bearing cover 14 by two sets of screws to achieve overall stability. At this point, the drone motor with heat dissipation function is assembled;

[0051] When the motor rotates, the inclined structures on the front cover heat dissipation ribs 17 and the rear cover heat dissipation ribs 9 rotate along with the interior, so that the external wind can penetrate from top to bottom, thereby providing heat dissipation function for the internal components.

[0052] Parts not involved in the present invention are the same as those in the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0053] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A UAV motor heat dissipation structure, characterized by: It comprises a housing (1), an iron core (4) and a center column (5); Magnetic sheets (2) are arranged at equal intervals on the inner side of the casing (1), and a rear cover (8) is arranged on the top of the inner side of the casing (1), and a groove structure for inserting and limiting multiple groups of magnetic sheets (2) is opened at the bottom of the rear cover (8), and a plurality of groups of rear cover heat dissipation ribs (9) are clamped in a circumferential array inside the rear cover (8), and a bevel structure is arranged in the middle of the rear cover heat dissipation rib (9), and a large bearing (15) is sleeved on the outer side of the bottom of the central column (5), and a front cover (16) is clamped on the outer side of the large bearing (15), and the front cover (16) is clamped with the bottom of the casing (1) through four groups of cards on the top and is fastened by screws, and a plurality of groups of front cover heat dissipation ribs (17) are clamped in a circumferential array on the inner side of the front cover (16).

2. The UAV motor heat dissipation structure according to claim 1, characterized in that: A magnetic sheet slot (3) is provided at the inner bottom of the housing (1), and a slot-shaped structure for inserting and limiting multiple groups of magnetic sheets (2) is provided at the top of the magnetic sheet slot (3).

3. The UAV motor heat dissipation structure according to claim 1, characterized in that: An iron core (4) is provided inside the housing (1) and on the inner side of the magnetic sheet (2), and a center column (5) is clamped inside the iron core (4).

4. The UAV motor heat dissipation structure according to claim 1, characterized in that: Two groups of bearing steel sleeves (7) are provided on the inner side of the center column (5), and two groups of rotating bearings (6) are respectively sleeved and rotatably mounted inside the two groups of bearing steel sleeves (7).

5. The UAV motor heat dissipation structure according to claim 1, characterized in that: A rear heat dissipation rib pressing plate (10) is fastened to the top of the rear cover plate (8) by screws.

6. The UAV motor heat dissipation structure according to claim 1, characterized in that: The four sets of rotating bearings (6) inside the center column (5) are plugged with shaft cores (11), and a shaft locking cover plate (12) is provided at the bottom of the rotating bearing (6) at the lower end inside the center column (5) and is threadedly connected to the bottom of the shaft core (11).

7. The UAV motor heat dissipation structure according to claim 1, characterized in that: A first slot is provided on the inner side of the bottom of the center column (5), and a stator bracket (13) is clamped on the inner side of the first slot. A second slot is provided on the bottom surface of the center column (5), and a bearing cover (14) is clamped on the inner side of the second slot, and the two are fastened together by screws.

8. The UAV motor heat dissipation structure according to claim 1, characterized in that: The bottom of the front cover plate (16) is fastened with a front heat dissipation rib pressing plate (18) via threads.

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