A high-efficiency heat-dissipation brushless motor structure

Abstract

The utility model belongs to brushless motor technical field, concretely is a kind of high -efficient heat dissipation's brushless motor structure, including shell, the shell is fixedly connected with end cover, the inside of shell is provided with mounting sleeve, the outer surface of mounting sleeve is fixedly sheathed with heat conduction cover, the end of mounting sleeve is integrally connected with connecting cover, the connecting cover is fixedly connected with connecting ring, the inner wall of shell is fixedly connected by screw with connecting ring, the mounting sleeve is installed with stator coil, the shell is rotatably installed with rotating shaft, the rotating shaft is fixedly installed with rotor assembly, heat conduction cover closely adheres stator coil and mounting sleeve, can fast transmission coil heat quantity;Mounting sleeve, connecting cover, connecting ring are all heat-dissipating aluminium material, can efficiently conduct heat to shell;Again cooperate with the heat dissipation port of shell and the heat dissipation hole of end cover form air convection, completely solve traditional motor heat accumulation problem, effectively reduce stator coil temperature, prolong motor life.

Description

Technical Field

[0001] This utility model relates to the field of brushless motor technology, specifically to a brushless motor structure with high-efficiency heat dissipation. Background Technology

[0002] During the operation of a brushless motor, the stator coil is the core heat-generating component. When it is energized, the heat is highly concentrated inside the stator coil, forming a "heat source concentration" characteristic.

[0003] Current traditional brushless motor cooling methods have significant drawbacks: the stator coils are mostly directly mounted inside the motor housing, relying solely on the housing for natural heat dissipation. Traditional motor housings are often made of a single metal material and lack optimized design for heat transfer between the stator coils and the housing, leading to continuous heat accumulation inside the motor. Therefore, we propose a highly efficient heat dissipation brushless motor structure. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a brushless motor structure with high-efficiency heat dissipation, thus solving the problems mentioned below.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-efficiency heat dissipation brushless motor structure includes a housing, an end cap fixedly connected to the housing, a mounting sleeve disposed inside the housing, a heat-conducting sleeve fixedly fitted on the outer surface of the mounting sleeve, a connecting cover integrally connected to the end of the mounting sleeve, a connecting ring fixedly connected to the connecting cover, the connecting ring being fixedly connected to the inner wall of the housing by screws, a stator coil mounted on the mounting sleeve, a rotating shaft rotatably mounted on the housing, and a rotor assembly fixedly mounted on the rotating shaft; The rotor assembly includes a mounting frame with a connecting cover. The rotating shaft is fixedly mounted on the connecting cover. The mounting frame has several mounting openings, and magnets are fixedly mounted at the mounting openings.

[0006] Preferably, the housing has several heat dissipation vents.

[0007] Preferably, a dustproof mesh is fixedly installed at the heat dissipation vent.

[0008] Preferably, a plurality of locking blocks are fixedly connected to the mounting bracket, and the connecting cover has a locking slot corresponding to the locking block, and the locking block is engaged in the corresponding locking slot.

[0009] Preferably, the end cap has heat dissipation holes, and a dust filter is installed at the heat dissipation holes.

[0010] Preferably, the heat-conducting sleeve is made of thermally conductive silicone.

[0011] Preferably, the mounting sleeve, connecting cover, and connecting ring are all made of heat-dissipating aluminum.

[0012] Preferably, a Hall sensor is fixedly installed on the inner wall of the end cap, and a plurality of detectors are fixedly connected to the connecting cover near the Hall sensor, with each detector corresponding to a magnet.

[0013] This invention provides a highly efficient heat dissipation brushless motor structure. Compared with the prior art, it has the following advantages: 1. Significantly improved heat dissipation efficiency: The heat-conducting sleeve fits tightly against the stator coil and the mounting sleeve, which can quickly transfer the heat of the coil; the mounting sleeve, connecting cover, and connecting ring are all made of heat-dissipating aluminum, which can efficiently conduct heat to the housing; together with the heat dissipation vents of the housing and the heat dissipation holes of the end cover, air convection is formed, which completely solves the problem of heat accumulation in traditional motors, effectively reduces the temperature of the stator coil, delays the aging of the insulation layer, and extends the life of the motor.

[0014] 3. Easier assembly and maintenance: The rotor assembly is snapped into place by the mounting bracket and the connecting cover, allowing for assembly and disassembly without complicated tools; the connecting ring is fixed to the housing with screws, ensuring precise positioning on the stator side, and the overall assembly process is simple, improving production and maintenance efficiency.

[0015] 4. Excellent dust protection: The dustproof mesh at the heat dissipation vent and the dust filter at the heat dissipation hole can prevent external dust from entering the motor, avoid dust accumulation affecting heat dissipation efficiency and normal operation of internal components, and ensure long-term stable operation of the motor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the main structure of the present utility model. Figure 2 ; Figure 3 This is a schematic diagram of the main body disassembled structure of this utility model; Figure 4 This is a schematic diagram of the rotor assembly structure of this utility model; Figure 5 This is a schematic diagram of the rotor assembly disassembled according to the present invention; Figure 6 This is a schematic diagram of the main cross-sectional structure of this utility model.

[0017] In the diagram: 1. Housing; 2. Heat dissipation vent; 3. Rotating shaft; 4. End cover; 5. Rotor assembly; 6. Stator coil; 7. Mounting sleeve; 8. Connecting cover; 9. Clamping block; 10. Mounting bracket; 11. Magnet; 12. Mounting port; 13. Heat dissipation hole; 14. Connecting cover; 15. Connecting ring; 16. Heat-conducting sleeve. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-6 This utility model provides a technical solution: a high-efficiency heat dissipation brushless motor structure, including a housing 1, an end cover 4 fixedly connected to the housing 1, an installation sleeve 7 provided inside the housing 1, a heat-conducting sleeve 16 fixedly fitted on the outer surface of the installation sleeve 7, a connecting cover 14 integrally connected to the end of the installation sleeve 7, a connecting ring 15 fixedly connected to the connecting cover 14, the connecting ring 15 being fixedly connected to the inner wall of the housing 1 by screws, a stator coil 6 installed on the installation sleeve 7, a rotating shaft 3 rotatably mounted on the housing 1, and a rotor assembly 5 fixedly mounted on the rotating shaft 3; The rotor assembly 5 includes a mounting frame 10, on which a connecting cover 8 is provided. The rotating shaft 3 is fixedly inserted through the connecting cover 8. The mounting frame 10 has several mounting holes 12, and magnets 11 are fixedly installed at the mounting holes 12.

[0020] The housing 1 has several heat dissipation vents 2, allowing external air to enter the interior of the housing 1, which improves the heat dissipation of the motor.

[0021] Dust filters are fixedly installed at the two heat dissipation vents.

[0022] The mounting bracket 10 is fixedly connected with several clips 9. The connecting cover 8 has a slot corresponding to the clip 9. The clip 9 is engaged in the corresponding slot, which facilitates the installation and removal of the connecting cover 8.

[0023] The end cover 4 has a heat dissipation hole 13, and a dust filter is installed at the heat dissipation hole 13. The heat dissipation hole 13 can improve the heat dissipation effect of this motor.

[0024] The thermally conductive sleeve 16 is made of thermally conductive silicone, which has the effects of heat transfer and insulation.

[0025] The mounting sleeve 7, connecting cover 14, and connecting ring 15 are all made of heat-dissipating aluminum, which can transfer the heat of the stator coil 6 to the housing 1 more quickly through heat transfer, thereby improving the heat dissipation effect of the stator coil 6.

[0026] A Hall sensor is fixedly installed on the inner wall of the end cap 4, and several detectors are fixedly connected to the connecting cover 8 near the Hall sensor. Each detector corresponds to a magnet 11.

[0027] Working principle: First, the integrated connecting cover 14, mounting sleeve 7 and connecting ring 15 are fixed, and the connecting ring 15 is connected to the inner wall of the housing 1 by screws; then the stator coil 6 is assembled onto the outer surface of the mounting sleeve 7 to complete the positioning of the stator component; then the magnet 11 is embedded into the mounting port 12 of the mounting bracket 10; the mounting bracket 10 is engaged with the corresponding slot of the connecting cover 8 by the locking block 9 on the mounting bracket 10 to complete the initial assembly of the rotor assembly 5; then the rotating shaft 3 is rotated and installed on the housing 1, so that the rotating shaft 3 is fixedly inserted through the connecting cover 8, so that the rotor assembly 5 and the rotating shaft 3 are linked to complete the full structure assembly; When the stator coil 6 is energized, it generates a periodically changing rotating magnetic field. The magnetic force generated by the rotating magnetic field and the magnet 11 on the mounting bracket 10 drives the rotor assembly 5 to rotate around the rotating shaft 3, thereby realizing power output. The Hall sensor on the inner wall of the end cover 4 detects the detection objects on the connecting cover 8 that correspond one-to-one with the magnet 11 in real time. The real-time position of the rotor assembly 5 is determined by the position change of the detection objects, and the feedback signal controls the timing of the current commutation of the stator coil 6 to ensure that the rotor assembly 5 rotates continuously and stably.

[0028] Heat conduction: The heat generated by the stator coil 6 is quickly transferred to the mounting sleeve 7 through the tightly fitted heat-conducting sleeve 16; the mounting sleeve 7 conducts the heat to the housing 1 through the integrated connecting cover 14 and connecting ring 15, solving the problem of heat concentration and difficulty in heat dissipation in traditional structures; Furthermore, the heat dissipation vent 2 on the housing 1 and the heat dissipation hole 13 on the end cover 4 form an air convection channel, dissipating the heat received by the housing 1 to the outside; the dustproof net at the heat dissipation vent 2 and the dust filter at the heat dissipation hole 13 can block external dust from entering, preventing dust accumulation from affecting heat dissipation efficiency and the lifespan of internal components.

[0029] 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.

[0030] 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. A high-efficiency heat dissipation brushless motor structure, comprising a housing (1), characterized in that: An end cap (4) is fixedly connected to the housing (1). An installation sleeve (7) is provided inside the housing (1). A heat-conducting sleeve (16) is fixedly installed on the outer surface of the installation sleeve (7). A connecting cover (14) is integrally connected to the end of the installation sleeve (7). A connecting ring (15) is fixedly connected to the connecting cover (14). The connecting ring (15) is fixedly connected to the inner wall of the housing (1) by screws. A stator coil (6) is installed on the installation sleeve (7). A rotating shaft (3) is rotatably installed on the housing (1). A rotor assembly (5) is fixedly installed on the rotating shaft (3). The rotor assembly (5) includes a mounting frame (10), on which a connecting cover (8) is provided. The rotating shaft (3) is fixedly installed on the connecting cover (8). The mounting frame (10) has several mounting ports (12), and a magnet (11) is fixedly installed at each mounting port (12).

2. The high-efficiency heat dissipation brushless motor structure according to claim 1, characterized in that: The housing (1) has several heat dissipation vents (2).

3. The high-efficiency heat dissipation brushless motor structure according to claim 2, characterized in that: A dustproof net is fixedly installed at the heat dissipation port (2).

4. The high-efficiency heat dissipation brushless motor structure according to claim 3, characterized in that: A number of locking blocks (9) are fixedly connected to the mounting bracket (10), and the connecting cover (8) has a slot corresponding to the locking block (9), and the locking block (9) is engaged in the corresponding slot.

5. The high-efficiency heat dissipation brushless motor structure according to claim 4, characterized in that: The end cap (4) has a heat dissipation hole (13), and a dust filter is installed at the heat dissipation hole (13).

6. The high-efficiency heat dissipation brushless motor structure according to claim 5, characterized in that: The heat-conducting sleeve (16) is made of heat-conducting silicone.

7. The high-efficiency heat dissipation brushless motor structure according to claim 6, characterized in that: The mounting sleeve (7), connecting cover (14) and connecting ring (15) are all made of heat-dissipating aluminum.

8. The high-efficiency heat dissipation brushless motor structure according to claim 7, characterized in that: A Hall sensor is fixedly installed on the inner wall of the end cap (4), and a number of detectors are fixedly connected to the connecting cover (8) near the Hall sensor. The detectors correspond one-to-one with the magnet (11).

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