Heat dissipation structure of outer rotor brushless motor

Abstract

The utility model belongs to the technical field of outer rotor brushless motors, and particularly relates to a heat dissipation structure of an outer rotor brushless motor, which aims at solving the problem that the service life of the outer rotor brushless motor is influenced by high temperature in the background technology, and adopts the scheme that the heat dissipation structure comprises an outer frame, a top cover is arranged on the outer wall of the top of the outer frame, and a rotating shaft is arranged in the outer frame. According to the utility model, the fan plates are arranged in the outer frame, the fan plates are driven to rotate together in the rotating process of the rotating shaft, the drainage grooves can drain heat to the upper part of the fan blades, the heat is blown away by the rotation of the fan blades, the heat in the outer rotor brushless motor is reduced, the structure is reasonable, the heat dissipation effect is good, and the service life is long. The heat dissipation strips outside the outer frame increase the heat dissipation area, the ventilation openings and the heat dissipation grooves in the top cover and the tripod at the bottom of the base can provide good heat dissipation and ventilation conditions for the outer rotor brushless motor, the heat dissipation efficiency is high, the abrasion of the motor is reduced, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of outer rotor brushless motors, in particular to a heat dissipation structure of an outer rotor brushless motor. Background Art

[0002] The outer rotor brushless motor is a high-performance, high-efficiency, low-noise motor that uses the principle of magnetic transmission and controls the rotor motion trajectory through an electronic control system, thereby achieving the purpose of accurately controlling the speed, torque and torque.

[0003] The life of an outer rotor brushless motor is not only determined by the quality of the motor itself, but also by the ambient temperature. The grease inside the outer rotor brushless motor is more likely to evaporate and age under high temperatures. When the lubricating grease inside the motor is exhausted, wear will accelerate and the life of the motor will also decrease. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a heat dissipation structure of an outer rotor brushless motor, which overcomes the deficiencies of the prior art and effectively solves the problem that high temperature may affect the service life of the outer rotor brushless motor.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A heat dissipation structure of an outer rotor brushless motor comprises an outer frame, a top cover is arranged on the top outer wall of the outer frame, a rotating shaft is arranged inside the outer frame, a fan plate is fixedly connected to the outer wall of the rotating shaft, and the top outer wall and the bottom outer wall of the fan plate are respectively provided with fan blades and drainage grooves distributed at equal distances;

[0007] The outer wall of the outer frame is provided with heat dissipation strips distributed at equal distances, and the outer walls on both sides of the top cover are provided with vents, the outer walls on both sides of the top cover are provided with heat dissipation grooves distributed at equal distances, the bottom outer wall of the outer frame is fixedly connected to a base, and the bottom outer wall of the base is fixedly connected to a tripod.

[0008] Preferably, a winding is provided on the outer wall of the rotating shaft, and the winding is arranged inside the outer frame.

[0009] Preferably, a docking sleeve is fixedly connected to the outer wall of the bottom of the rotating shaft.

[0010] Preferably, a fixing sleeve is arranged at the center of the top outer wall of the top cover, and a bearing sleeve is arranged at the center of the bottom outer wall of the tripod.

[0011] Preferably, bearings are installed inside the bearing sleeves, and the rotating shaft is fixedly connected to the inner ring of the bearing.

[0012] Preferably, both sides of the top outer wall of the top cover are fixedly connected with connecting pieces.

[0013] The beneficial effects of the utility model are:

[0014] 1. The heat dissipation structure of the outer rotor brushless motor of this design has a fan plate inside the outer frame. When the rotating shaft rotates, the fan plate will be driven to rotate together. The drainage groove can drain the heat to the top of the fan blade, and use the rotation of the fan blade to blow away the heat, thereby reducing the heat inside the outer rotor brushless motor. The structure is reasonable and the heat dissipation effect is good;

[0015] 2. The heat dissipation structure of the outer rotor brushless motor of this design has heat dissipation strips outside the outer frame to increase the heat dissipation area, and the vents and heat dissipation slots on the top cover and the tripod at the bottom of the base can provide good heat dissipation and ventilation conditions for the outer rotor brushless motor, with fast heat dissipation efficiency, reduced motor wear and increased motor service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a heat dissipation structure of an outer rotor brushless motor proposed by the utility model;

[0017] Figure 2 This is a bottom view of the overall structure of a heat dissipation structure of an outer rotor brushless motor proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the heat dissipation structure of an outer rotor brushless motor proposed by the utility model;

[0019] Figure 4 The present invention is a schematic diagram of a fan plate structure of a heat dissipation structure of an outer rotor brushless motor.

[0020] In the figure: 1. outer frame; 2. top cover; 3. rotating shaft; 4. fan plate; 5. fan blade; 6. drainage groove; 7. heat dissipation strip; 8. vent; 9. heat dissipation groove; 10. base; 11. tripod; 12. winding; 13. docking sleeve; 14. fixing sleeve; 15. bearing sleeve; 16. connecting piece. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Embodiment 1, refer to Figures 1 to 4 A heat dissipation structure of an outer rotor brushless motor comprises an outer frame 1, a top cover 2 is arranged on the top outer wall of the outer frame 1, a rotating shaft 3 is arranged inside the outer frame 1, a fan plate 4 is fixedly connected to the outer wall of the rotating shaft 3, and the top outer wall and the bottom outer wall of the fan plate 4 are respectively provided with fan blades 5 and drainage grooves 6 distributed at equal distances.

[0023] In this embodiment, a fan plate 4 is arranged inside the outer frame 1. When the rotating shaft 3 rotates, the fan plate 4 is driven to rotate together. The drainage groove 6 can drain the heat to the top of the fan blade 5 and use the rotation of the fan blade 5 to blow away the heat, thereby reducing the heat inside the outer rotor brushless motor. The structure is reasonable and the heat dissipation effect is good.

[0024] Example 2, refer to Figures 1 to 2 A heat dissipation structure of an outer rotor brushless motor, wherein the outer wall of an outer frame 1 is provided with heat dissipation strips 7 distributed at equal distances, and the outer walls on both sides of a top cover 2 are provided with vents 8, the outer walls on both sides of the top cover 2 are provided with heat dissipation grooves 9 distributed at equal distances, the outer wall at the bottom of the outer frame 1 is fixedly connected to a base 10, and the outer wall at the bottom of the base 10 is fixedly connected to a tripod 11.

[0025] In this embodiment, the heat dissipation strips 7 on the outside of the outer frame 1 increase the heat dissipation area, and the vents 8 and heat dissipation grooves 9 on the top cover 2 and the tripod 11 at the bottom of the base 10 can provide good heat dissipation and ventilation conditions for the outer rotor brushless motor, with fast heat dissipation efficiency, reduced motor wear, and increased motor service life.

[0026] Reference Figure 3 A winding 12 is disposed on the outer wall of the rotating shaft 3 , and the winding 12 is disposed inside the outer frame 1 .

[0027] Reference Figure 3 A docking sleeve 13 is fixedly connected to the outer wall of the bottom of the rotating shaft 3 .

[0028] Reference Figures 1 to 3 A fixing sleeve 14 is provided at the center of the top outer wall of the top cover 2 , and a bearing sleeve 15 is provided at the center of the bottom outer wall of the tripod 11 .

[0029] Reference Figures 1 to 3 , bearings are installed inside the bearing sleeve 15, and the rotating shaft 3 is fixedly connected to the inner ring of the bearing.

[0030] Reference Figure 1 Both sides of the top outer wall of the top cover 2 are fixedly connected with connecting pieces 16.

[0031] Working principle: The outside of the outer rotor brushless motor is mainly composed of an outer frame 1, a top cover 2 and a base 10. When the rotating shaft 3 inside the outer frame 1 rotates under the action of the winding 12, the fan plate 4 will be driven to rotate together. At this time, the drainage groove 6 can drain the heat to the top of the fan blade 5, and use the rotation of the fan blade 5 to blow away the heat. At the same time, the heat dissipation strip 7 outside the outer frame 1 increases the heat dissipation area, and the vents 8 and heat dissipation grooves 9 on the top cover 2 and the tripod 11 at the bottom of the base 10 can provide good heat dissipation and ventilation conditions for the outer rotor brushless motor.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat dissipation structure of an outer rotor brushless motor, comprising an outer frame (1), characterized in that: The top outer wall of the outer frame (1) is provided with a top cover (2), and a rotating shaft (3) is provided inside the outer frame (1); a fan plate (4) is fixedly connected to the outer wall of the rotating shaft (3), and the top outer wall and the bottom outer wall of the fan plate (4) are respectively provided with fan blades (5) and drainage grooves (6) distributed at equal distances; The outer wall of the outer frame (1) is provided with heat dissipation strips (7) distributed at equal distances, and the outer walls on both sides of the top cover (2) are provided with ventilation holes (8), and the outer walls on both sides of the top cover (2) are provided with heat dissipation grooves (9) distributed at equal distances, and the bottom outer wall of the outer frame (1) is fixedly connected to a base (10), and the bottom outer wall of the base (10) is fixedly connected to a tripod (11).

2. The heat dissipation structure of an outer rotor brushless motor according to claim 1, characterized in that: The outer wall of the rotating shaft (3) is provided with a winding (12), and the winding (12) is arranged inside the outer frame (1).

3. The heat dissipation structure of an outer rotor brushless motor according to claim 1, characterized in that: A docking sleeve (13) is fixedly connected to the outer wall of the bottom of the rotating shaft (3).

4. The heat dissipation structure of an outer rotor brushless motor according to claim 1, characterized in that: A fixing sleeve (14) is arranged at the center of the top outer wall of the top cover (2), and a bearing sleeve (15) is arranged at the center of the bottom outer wall of the tripod (11).

5. The heat dissipation structure of an outer rotor brushless motor according to claim 4, characterized in that: The bearing sleeves (15) are equipped with bearings inside, and the rotating shaft (3) is fixedly connected to the inner ring of the bearing.

6. The heat dissipation structure of an outer rotor brushless motor according to claim 1, characterized in that: Connecting pieces (16) are fixedly connected to both sides of the top outer wall of the top cover (2).

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