Heat dissipation structure of brushless direct current motor
By designing a support base air duct, heat sink, and fan structure in the brushless DC motor, the problem of poor heat dissipation in traditional heat dissipation structures is solved, achieving efficient heat dissipation and improved stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO JINGDRIVE MOTOR CO LTD
- Filing Date
- 2025-01-20
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional brushless DC motors have complex heat dissipation structures, which leads to poor heat dissipation and affects motor performance and reliability, especially in compact spaces.
The design incorporates an internal support base to create an airflow channel. Combined with heat sinks and a cooling fan, it utilizes an aluminum alloy heat-conducting plate and fin structure to improve airflow and heat dissipation efficiency. A protective shell is installed at the rear of the casing to protect the fan.
It effectively reduces the internal temperature of the motor, improves heat dissipation efficiency, extends fan life, and enhances the stability and reliability of the motor in a compact space.
Smart Images
Figure CN224110989U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to brushless direct current motor technical field, concretely is a kind of heat dissipation structure of brushless direct current motor. BACKGROUND
[0002] Brushless direct current motor is widely used in various electric appliances and industrial equipment due to its high efficiency, long service life and low maintenance requirement, and with the increase of motor power and rotating speed, the heat dissipation problem gradually becomes a key factor affecting its performance and reliability.
[0003] The heat dissipation structure of traditional brushless direct current motor is complex, and the heat dissipation structure is large in size. The overall weight of the motor is increased, which affects its application scene. Some heat dissipation structures of brushless direct current motor may cause poor air flow, and cannot effectively take away heat, especially in compact space. UTILITY MODEL CONTENT
[0004] (I) technical problem solved
[0005] In view of the deficiencies of the prior art, the utility model provides a heat dissipation structure of brushless direct current motor to solve the problems in the above background.
[0006] (II) technical scheme
[0007] To achieve the above purpose, the utility model provides the following technical scheme: a heat dissipation structure of brushless direct current motor, comprising a shell, a first support seat is installed on the front side of the inside of the shell, a second support seat is fixedly installed on the rear side of the inside of the shell, a rotating shaft is rotatably connected to the middle part of the first support seat and the second support seat, a rotor is installed on the outer side of the rotating shaft, a stator is installed on the outer side surface of the rotor, heat dissipation fins are installed around the shell, the heat dissipation fins comprise a heat conduction plate and a fin, and the heat conduction plate is located at the bottom of the fin.
[0008] Preferably, the heat dissipation fins penetrate the shell and are located on the outer side of the stator, the heat conduction plate is made of aluminum alloy, and the fin is formed by parallel arrangement of a plurality of rectangular blocks.
[0009] Preferably, a mounting seat is connected to the rear side of the shell, and a heat dissipation fan is fixedly installed on the rear side of the mounting seat by screws.
[0010] Preferably, clamping grooves are formed on the four edges of the mounting seat, and protrusions are installed on the inner side of the rear part of the shell, and the protrusions are slidingly connected in the clamping grooves.
[0011] Preferably, a protective shell is installed on the rear side of the shell, and ventilation openings are uniformly formed on the rear side of the protective shell.
[0012] Preferably, the first support seat and the second support seat are provided with slots around the periphery, and the first support seat and the second support seat form an air duct inside the shell.
[0013] Compared with the prior art, the heat dissipation structure of the brushless DC motor has the following beneficial effects: the heat dissipation structure of the brushless DC motor is provided with the first support seat and the second support seat mounted at the front end and the rear end inside the shell, and the rotating shaft is mounted at the middle part of the first support seat and the second support seat, so that the rotating shaft can stably and continuously rotate; the first support seat and the second support seat are provided with a plurality of slots, so as to form an air duct, improve the flowability of air, effectively reduce the temperature around the rotor, and improve the service life; the rear side of the shell is slidably connected with the mounting seat through the protruding block and the clamping groove, the mounting seat is provided with the heat dissipation fan, the heat dissipation fan is convenient to disassemble, replace and maintain, the protective shell at the rear side of the heat dissipation fan can effectively protect the heat dissipation fan, effectively improve the service life of the heat dissipation fan, and the four edges of the shell are provided with the heat dissipation fins, the heat dissipation fins penetrate the shell to the outside of the stator, the heat dissipation fins are provided with the heat conduction plates which can absorb heat and discharge heat through the fins, so that the temperature inside the shell can be significantly reduced, and the service life is improved. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model;
[0015] Figure 2 It is a mounting seat structure schematic view of the utility model;
[0016] Figure 3 It is a rotor structure schematic view of the utility model;
[0017] Figure 4 It is a heat dissipation fin structure schematic view of the utility model.
[0018] In the drawing: 1, shell; 2, rotating shaft; 3, first support seat; 4, heat dissipation fin; 5, protective shell; 6, heat dissipation fan; 7, mounting seat; 8, clamping groove; 9, second support seat; 10, protruding block; 11, rotor; 12, stator; 13, heat conduction plate; 14, fin. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0020] For example, Figures 1-4The utility model provides a technical scheme: a heat dissipation structure of brushless DC motor, including shell 1, the front side of the inside of shell 1 is installed with first support seat 3, the rear of the inside of shell 1 is fixedly installed with second support seat 9, the middle part of first support seat 3 and second support seat 9 is rotatably connected with the shaft 2, the outer side of shaft 2 is installed with rotor 11, the outer side surface of rotor 11 is installed with stator 12, the periphery of shell 1 is installed with fin 4, fin 4 includes heat conduction plate 13 and fin 14, and heat conduction plate 13 is located at the bottom of fin 14.
[0021] Further, the fin 4 penetrates the shell 1 and is located on the outer side of the stator 12, the heat conduction plate 13 is made of aluminum alloy, and the fin 14 is formed by parallel arrangement of a plurality of rectangular blocks.
[0022] Specifically, the heat conduction plate 13 can absorb the heat generated by the rotation of the motor, and the parallel and spaced fin 14 can effectively remove the heat
[0023] Further, the rear side of the shell 1 is connected with a mounting seat 7, and the rear side of the mounting seat 7 is fixedly installed with a cooling fan 6 through screws.
[0024] Specifically, the cooling fan 6 can blow away the heat inside the shell 1, effectively reducing the temperature inside the motor.
[0025] Further, the mounting seat 7 is provided with a clamping groove 8 on four sides, and the inner side of the rear part of the shell 1 is provided with a protrusion 10 on four sides, and the protrusion 10 is slidably connected in the clamping groove 8.
[0026] Specifically, the clamping groove 8 and the protrusion 10 can provide guiding and positioning functions, and can significantly improve the stability of the cooling fan 6 during operation.
[0027] Further, the rear side of the shell 1 is provided with a protective shell 5, and the rear side of the protective shell 5 is uniformly provided with a ventilation opening.
[0028] Specifically, the protective shell 5 can effectively prevent sundries or other foreign matters from entering the inside of the cooling fan 6, reduce the risk of fan damage, and improve the service life and stability of the cooling fan 6,
[0029] Further, the first support seat 3 and the second support seat 9 are provided with grooves on four sides, and the first support seat 3 and the second support seat 9 form an air duct inside the shell 1.
[0030] Specifically, air enters from one end of the shell 1, flows out through the opening between the first support seat 3 and the second support seat 9, forms a continuous ventilation circulation, improves the flowability of air, and reduces the temperature inside the shell 1.
[0031] Working principle: first, the inside front end of the shell 1 is provided with the first support seat 3, the inside rear end of the shell 1 is provided with the second support seat 9, the first support seat 3 and the second support seat 9 are rotatably connected with the rotating shaft 2 in the middle, the stability of the rotating shaft 2 can be improved when rotating, the first support seat 3 and the second support seat 9 are provided with the mouth, the air duct can be formed in the shell 1, secondly, the rear side of the shell 1 is provided with the lug 10, the mounting seat 7 is slidably connected on the lug 10 through the clamping slot 8 provided on the four edges of the mounting seat 7, the rear side of the mounting seat 7 is provided with the cooling fan 6, the rear side of the cooling fan 6 is provided with the protective shell 5, the protective shell 5 is provided with the ventilation opening, the cooling fan 6 can be protected and the heat can be effectively discharged, finally, the four edges of the shell 1 are provided with the radiating fin 4, the radiating fin 4 penetrates the shell 1 to the outside of the stator 12, the radiating fin 4 is composed of the heat conduction plate 13 and the fin 14, the heat conduction plate 13 made of aluminum alloy can absorb heat, the heat can be effectively discharged through the parallel and spaced fin 14, the stability of the motor when working can be improved.
[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A heat dissipation structure of a brushless DC motor comprising a housing (1), characterized in that: The front side of the inside of the shell (1) is provided with a first support seat (3), the rear side of the inside of the shell (1) is fixedly provided with a second support seat (9), the middle part of the first support seat (3) and the second support seat (9) is rotationally connected with a rotating shaft (2), the outer side of the rotating shaft (2) is provided with a rotor (11), the outer side surface of the rotor (11) is provided with a stator (12), the periphery of the shell (1) is provided with a cooling fin (4), the cooling fin (4) comprises a heat conduction plate (13) and a fin (14), the heat conduction plate (13) is located at the bottom of the fin (14).
2. The heat dissipation structure of a brushless DC motor according to claim 1, characterized in that: The cooling fin (4) penetrates the shell (1) and is located at the outer side of the stator (12), the heat conduction plate (13) is made of aluminum alloy, and the fin (14) is formed by parallel arrangement of a plurality of rectangular blocks.
3. The heat dissipation structure of a brushless DC motor according to claim 1, characterized in that: The rear side of the shell (1) is connected with a mounting seat (7), and the rear side of the mounting seat (7) is fixedly provided with a cooling fan (6) through screws.
4. The heat dissipation structure of a brushless DC motor according to claim 3, characterized in that: The four edges of the mounting seat (7) are provided with clamping grooves (8), and the four edges of the inner side of the rear part of the shell (1) are provided with protrusions (10), which are slidingly connected in the clamping grooves (8).
5. The heat dissipation structure of a brushless DC motor according to claim 1, characterized in that: The rear side of the shell (1) is provided with a protective shell (5), and the rear side of the protective shell (5) is uniformly provided with ventilation openings.
6. The heat dissipation structure of a brushless DC motor according to claim 1, characterized in that: The periphery of the first support seat (3) and the second support seat (9) is provided with a groove, and the first support seat (3) and the second support seat (9) form an air duct in the shell (1).