Rotor structure of brushless motor

Abstract

The utility model discloses a brushless motor rotor structure comprising a rotor body, the rotor body is provided with a front housing and a rear housing, the rotor body is provided with a rotating shaft, the rotor body, the front housing and the rear housing are all provided with heat dissipation holes in a circumferential array, and the rotor body is provided with a cleaning assembly used for cleaning the heat dissipation holes. The rotor body is provided with a linkage assembly used for driving the cleaning assembly to move front and back, and the rotor body is provided with a guide assembly used for driving the moving cleaning assembly to rotate. According to the cleaning device, when the rotor body rotates, centrifugal force generated by the rotor body is matched with the linkage assembly to drive the cleaning assembly to continuously move front and back, and when the cleaning assembly moves front and back, the guide assembly drives the cleaning assembly to rotate; in this way, the cleaning assembly can clean dust adhering to the inner walls of the heat dissipation holes through the arranged brushes, and then the dust is pushed out of the heat dissipation holes through front-back movement of the cleaning roller.

Description

Technical Field

[0001] This utility model mainly relates to the field of brushless motor technology, specifically a brushless motor rotor structure. Background Technology

[0002] Brushless DC motors are widely used in automobiles, tools, industrial control, automation and aerospace. They can operate at low speeds and high power. A brushless DC motor is mainly composed of a motor body and a driver. The motor body is mainly composed of a stator and a rotor. The stator and rotor are the key components for motor operation. The rotor is the rotating part of the motor and can generate the main magnetic field. It is usually composed of permanent magnets, magnetic conductors and supporting components.

[0003] Patent No. 202321348648.9 describes a brushless motor rotor structure. It uses a cleaning component inside the heat dissipation vent to keep the vent clean. However, this cleaning component simply uses a cleaning rod that moves back and forth to push out dust from inside the vent. This fails to remove dust adhering to the inner wall of the vent. Furthermore, if the cleaning rod is used to push away dust, it needs to be well-fitted to the vent diameter. This can cause the cleaning rod to block one end of the vent during cleaning, affecting airflow and thus the motor's cooling performance. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing solutions are too simplistic. It primarily offers a brushless motor rotor structure to solve the technical problem mentioned in the background art (Patent No. 202321348648.9, "A Brushless Motor Rotor Structure"). In that application, the cleaning rod can only push dust out of the heat dissipation vent, failing to clean the dust inside the vent. Furthermore, the cleaning rod's action when cleaning the vent can easily affect the overall airflow within the vent.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A brushless motor rotor structure includes a rotor body, a front housing and a rear housing, a rotating shaft, and heat dissipation holes arranged in a circumferential array on the rotor body, a cleaning component for cleaning the heat dissipation holes, a linkage component for driving the cleaning component to move back and forth, and a guide component for driving the moving cleaning component to rotate.

[0007] Preferably, the linkage component includes a first connecting rod and a second connecting rod. The first connecting rod is disposed on the rear housing. The end of the first connecting rod away from the rear housing is connected to the second connecting rod. The end of the second connecting rod away from the first connecting rod is provided with a support block.

[0008] Preferably, the linkage assembly further includes a telescopic sleeve and a spring. The telescopic sleeve is disposed in the heat dissipation hole, one end of the telescopic sleeve is connected to the connection point of the first connecting rod and the second connecting rod, and the spring is sleeved on the telescopic sleeve.

[0009] Preferably, the cleaning component includes a cleaning roller disposed inside a heat dissipation hole and on a support block.

[0010] Preferably, the cleaning component further includes a brush disposed on the cleaning roller and in contact with the inner wall of the heat dissipation hole.

[0011] Preferably, the guiding assembly includes a guiding groove and a guiding rod. The guiding groove is formed on the inner wall of the heat dissipation hole, and the guiding rod is disposed on the cleaning roller and disposed inside the guiding groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: when the rotor body rotates, the centrifugal force generated by the rotor body, together with the linkage component, will drive the cleaning component to move back and forth continuously. When the cleaning component moves back and forth, the guide component will drive the cleaning component to rotate. In this way, the cleaning component can clean the dust adhering to the inner wall of the heat dissipation hole through the set brush, and then push the dust out of the heat dissipation hole by the back and forth movement of the cleaning roller.

[0013] Furthermore, because the cleaning roller is equipped with a brush, it does not need to be in close contact with the inner wall of the heat dissipation hole, and a certain distance can be maintained. This means that the cleaning roller does not completely block the inner cavity of the heat dissipation hole, allowing air to circulate through the heat dissipation hole as well.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the top three-dimensional structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the bottom three-dimensional structure of this utility model;

[0017] Figure 3 This is a cross-sectional frontal perspective view of the three-dimensional structure of this utility model;

[0018] Figure 4 This is a cross-sectional side view of the three-dimensional structure of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the cleaning component in this utility model;

[0020] The diagram is marked as follows:

[0021] 1. Rotor body; 2. Front housing; 3. Rear housing; 4. Shaft; 5. Heat dissipation hole; 6. Guide groove; 7. Cleaning roller; 8. Guide rod; 9. Brush; 10. First connecting rod; 11. Second connecting rod; 12. Telescopic sleeve rod; 13. Spring; 14. Support block. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Please refer to the appendix carefully. Figures 1-5 A brushless motor rotor structure includes a rotor body 1, a front housing 2 and a rear housing 3 on the rotor body 1, a rotating shaft 4 on the rotor body 1, heat dissipation holes 5 arranged in a circumferential array on the rotor body 1, a cleaning component for cleaning the heat dissipation holes 5 on the rotor body 1, a linkage component for driving the cleaning component to move back and forth on the rotor body 1, and a guide component for driving the moving cleaning component to rotate on the rotor body 1.

[0026] The specific operating procedure of this utility is as follows: A magnet is provided on the rotor body 1. The front housing 2 and the rear housing 3 are used to wrap the magnet to prevent it from falling off. The rotation of the rotating shaft 4 will drive the rotor body 1 to rotate. When the rotor body 1 rotates, it will drive the cleaning component to move back and forth through centrifugal force in conjunction with the linkage component. When the cleaning component moves back and forth, the guide component will drive the cleaning component to rotate. In this way, the cleaning component can clean the dust on the inner wall of the heat dissipation hole 5 and discharge the dust inside the heat dissipation hole 5.

[0027] Please refer to Figure 5 The linkage component includes a first connecting rod 10 and a second connecting rod 11. The first connecting rod 10 is disposed on the rear housing 3. The end of the first connecting rod 10 away from the rear housing 3 is connected to the second connecting rod 11. The end of the second connecting rod 11 away from the first connecting rod 10 is provided with a support block 14. The linkage component also includes a telescopic sleeve 12 and a spring 13. The telescopic sleeve 12 is disposed in the heat dissipation hole 5. One end of the telescopic sleeve 12 is connected to the connection point of the first connecting rod 10 and the second connecting rod 11. The spring 13 is sleeved on the telescopic sleeve 12.

[0028] One end of the first connecting rod 10 is hinged to the rear housing 3. The first connecting rod 10 is hinged to the second connecting rod 11, and the second connecting rod 11 is hinged to the support block 14. When the rotor body 1 rotates, the centrifugal force generated by the rotation of the rotor body 1 will drive the hinge point of the first connecting rod 10 and the second connecting rod 11 to move outward. At this time, the second connecting rod 11 will push the support block 14 forward. At the same time, the connection point of the first connecting rod 10 and the second connecting rod 11 will compress the telescopic sleeve 12 and the spring 13. When the spring 13 is compressed to a certain extent, the rebound force of the spring 13 is greater than the centrifugal force, and the spring 13 will rebound. The spring 13 will push the connection point of the first connecting rod 10 and the second connecting rod 11 back a certain distance. At this time, the second connecting rod 11 will pull the support block 14 back. After the spring 13 rebounds a certain distance, the centrifugal force is greater than the rebound force of the spring 13. In this way, the centrifugal force compresses the spring 13, and the spring 13 rebounds and resets. This cycle is realized, so that the second connecting rod 11 drives the support block 14 to move back and forth.

[0029] Please refer to Figure 5 The cleaning component includes a cleaning roller 7, which is disposed inside the heat dissipation hole 5 and on the support block 14. The cleaning component also includes a brush 9, which is disposed on the cleaning roller 7 and is in contact with the inner wall of the heat dissipation hole 5.

[0030] The cleaning roller 7 is rotatably connected to the support block 14. The support block 14 drives the cleaning roller 7 to move back and forth. The brush 9 is in contact with the inner wall of the heat dissipation hole 5. The brush 9 is used to clean the dust adhering to the inner wall of the heat dissipation hole 5. Due to the setting of the brush 9, there is a gap between the cleaning roller 7 and the inner wall of the heat dissipation hole 5, so the heat dissipation hole 5 will not be blocked and the heat dissipation hole 5 can still be ventilated. The cleaning roller 7 is used to discharge the dust inside the heat dissipation hole 5.

[0031] Please refer to Figures 3-5 The guiding component includes a guiding groove 6 and a guiding rod 8. The guiding groove 6 is formed on the inner wall of the heat dissipation hole 5, and the guiding rod 8 is set on the cleaning roller 7 and is located inside the guiding groove 6.

[0032] The inner wall of the heat dissipation hole 5 is provided with a threaded guide groove 6. The guide rod 8 is slidably connected inside the guide groove 6. When the cleaning roller 7 moves back and forth, the guide rod 8, in conjunction with the guide groove 6, will drive the cleaning roller 7 to rotate at a small angle. This allows the brush 9 to scrape and clean the dust adhering to the inner wall of the heat dissipation hole 5.

[0033] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A brushless motor rotor structure, comprising a rotor body (1), wherein a front housing (2) and a rear housing (3) are disposed on the rotor body (1), and a rotating shaft (4) is disposed on the rotor body (1), characterized in that: The rotor body (1), the front housing (2) and the rear housing (3) are all provided with heat dissipation holes (5) in a circular array. The rotor body (1) is provided with a cleaning component for cleaning the heat dissipation holes (5). The rotor body (1) is provided with a linkage component for driving the cleaning component to move back and forth. The rotor body (1) is provided with a guide component for driving the moving cleaning component to rotate.

2. The brushless motor rotor structure according to claim 1, characterized in that: The linkage component includes a first connecting rod (10) and a second connecting rod (11). The first connecting rod (10) is disposed on the rear housing (3). The end of the first connecting rod (10) away from the rear housing (3) is connected to the second connecting rod (11). The end of the second connecting rod (11) away from the first connecting rod (10) is provided with a support block (14).

3. The brushless motor rotor structure according to claim 2, characterized in that: The linkage assembly also includes a telescopic sleeve (12) and a spring (13). The telescopic sleeve (12) is disposed in the heat dissipation hole (5). One end of the telescopic sleeve (12) is connected to the connection point of the first connecting rod (10) and the second connecting rod (11). The spring (13) is sleeved on the telescopic sleeve (12).

4. The brushless motor rotor structure according to claim 2, characterized in that: The cleaning component includes a cleaning roller (7), which is disposed inside the heat dissipation hole (5) and on the support block (14).

5. The brushless motor rotor structure according to claim 4, characterized in that: The cleaning assembly also includes a brush (9) disposed on the cleaning roller (7) and the brush (9) is in contact with the inner wall of the heat dissipation hole (5).

6. The brushless motor rotor structure according to claim 5, characterized in that: The guiding assembly includes a guiding groove (6) and a guiding rod (8). The guiding groove (6) is formed on the inner wall of the heat dissipation hole (5), and the guiding rod (8) is disposed on the cleaning roller (7) and disposed inside the guiding groove (6).

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