Brushless motor heat dissipation shell

Abstract

The utility model relates to the technical field of motor heat dissipation, in particular to a brushless motor heat dissipation shell, which comprises a motor shell, a motor body is wrapped in the motor shell, a rotating shaft is arranged in the middle of the motor body, and a plurality of heat dissipation fins are arranged on the outer surface of the motor shell. The plurality of heat dissipation fins are uniformly distributed along the axial direction of the motor shell, a heat dissipation channel is formed between every two adjacent heat dissipation fins, and the heat dissipation channels are used for enhancing air flow and improving heat dissipation efficiency; a heat conduction layer is arranged on the inner surface of the motor shell, is in direct contact with the motor body and is used for conducting heat to the heat dissipation fins; a plurality of heat dissipation holes are formed in the position, located at the heat dissipation channel, of the motor shell, and the heat dissipation holes are communicated with the heat conduction layer and used for further increasing air circulation and improving the heat dissipation effect; and one side of the rear-end shell is connected with a heat dissipation fan through a rotating shaft, and the outer side of the heat dissipation fan is covered with a flow guide cover.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor heat dissipation technical field, concretely relates to a brushless motor heat dissipation casing, especially suitable for high -power, long -time operation's brushless motor, aims at improving the heat dissipation efficiency and reliability of motor through optimizing heat dissipation structure. BACKGROUND

[0002] Brushless motor is a kind of motor that uses electronic commutation instead of traditional mechanical commutation, and its core structure includes stator, rotor and electronic controller. Brushless motor has the advantages of high efficiency, low noise, long service life and high reliability, and is widely used in unmanned aerial vehicle, electric vehicle, household appliance, industrial equipment and other fields. Its working principle is to adjust the current direction through the electronic controller, drive the rotor to rotate, so as to realize the conversion of electric energy into mechanical energy. Since brushless motor will generate a lot of heat during operation, the heat dissipation performance directly affects its working efficiency and service life.

[0003] The existing brushless motor casing heat dissipation structure usually adopts simple heat dissipation fin or direct open design, but relying on this natural heat dissipation mode cannot effectively disperse the heat generated in the motor, resulting in local high temperature, affecting the performance of the motor, and the heat dissipation through external fan needs to consume additional energy, making the use cost of the motor higher. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of brushless motor heat dissipation casing, by optimizing heat dissipation structure, solve the uneven heat dissipation of brushless motor in the prior art, low efficiency and the problem that heat dissipation needs to consume additional energy, improve the heat dissipation performance of brushless motor.

[0005] To solve the above technical problems, the technical scheme provided by the utility model is a kind of brushless motor heat dissipation casing, including motor casing, front end shell and rear end shell are respectively buckled and fixed at the front and rear ends of motor casing, motor body is wrapped in the inside of motor casing, shaft is arranged in the middle of motor body, the outer surface of motor casing is provided with a plurality of heat dissipation fins, and a plurality of heat dissipation fins are evenly distributed along the axial direction of motor casing, heat dissipation channel is formed between adjacent heat dissipation fins, and the heat dissipation channel is used to enhance air flow and improve heat dissipation efficiency;

[0006] The inner surface of the motor casing is provided with a heat conduction layer, the heat conduction layer is in direct contact with the motor body, and is used to conduct heat to the heat dissipation fins;

[0007] The motor casing is provided with a plurality of heat dissipation holes at the heat dissipation channel, the heat dissipation holes are communicated with the heat conduction layer, and are used to further increase air flow and improve heat dissipation effect;

[0008] The side of the rear end shell is connected with a heat dissipation fan through a shaft, and the outer side of the heat dissipation fan is covered with a flow guide cover.

[0009] As a preferred technical scheme of the utility model, the material of the motor shell is aluminum alloy or magnesium alloy, and the surface of the motor shell is subjected to anodic oxidation treatment to enhance its corrosion resistance and heat dissipation performance.

[0010] As a preferred technical scheme of the utility model, the cross-sectional shape of the heat dissipation fin is trapezoidal or rectangular, and the height of the heat dissipation fin gradually increases from the front end shell end to the rear end shell end of the motor shell.

[0011] As a preferred technical scheme of the utility model, the width of the heat dissipation channel gradually increases from the rear end shell end to the front end shell end of the motor shell to enhance the smoothness of air flow.

[0012] As a preferred technical scheme of the utility model, the heat conduction layer is made of high-thermal-conductivity material, and the high-thermal-conductivity material includes one or more of aluminum, copper or aluminum alloy.

[0013] As a preferred technical scheme of the utility model, the inner diameter of the flow guide cover is greater than the outer diameter of the rear end shell, and one side of the flow guide cover abuts against one end of the heat dissipation fin, the flow guide cover is in communication with the heat dissipation channel, the other side of the flow guide cover is provided with a plurality of air inlets, and the flow guide cover is used for forcing air flow to further improve the heat dissipation efficiency.

[0014] As a preferred technical scheme of the utility model, the flow guide cover is provided with a dust screen at the connection position with the heat dissipation fin, the dust screen is annular and covers between the flow guide cover and the motor shell, and the flow guide cover is provided with a dust sheet at the plurality of air inlets to prevent dust from entering the inside of the flow guide cover.

[0015] The utility model has the advantages compared with the prior art in that:

[0016] 1. The brushless motor heat dissipation shell is cooperatively designed through the heat dissipation fin, the heat dissipation channel and the heat conduction layer, the heat dissipation efficiency is significantly improved, the stable operation of the motor in a high-temperature environment is ensured, the gradient design of the heat dissipation fin and the heat dissipation channel optimizes heat distribution, and the local overheating problem is avoided.

[0017] 2. The brushless motor heat dissipation shell is provided with the heat dissipation fan and the flow guide cover directly connected with the rotating shaft, can effectively rotate synchronously through the operation of the brushless motor, can drive the heat dissipation fan to rotate and dissipate heat only by increasing a small brushless motor load, and reduces consumption during use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure diagram of the utility model of a brushless motor heat dissipation shell.

[0019] Figure 2The utility model discloses a vertical structure diagram of the heat dissipation fin of a brushless motor heat dissipation shell.

[0020] Figure 3 The utility model discloses an explosion structure diagram of a brushless motor heat dissipation shell.

[0021] Figure 4 The utility model discloses a cross section three -dimensional structure diagram of a brushless motor heat dissipation shell.

[0022] As shown in the figure:

[0023] 1, motor shell;2, front end shell;3, rear end shell;4, motor body;5, rotating shaft;6, heat dissipation fin;7, heat dissipation channel;8, heat conduction layer;9, heat dissipation hole;10, heat dissipation fan;11, flow guide cover;12, dust screen;13, dust sheet;14, multiple air inlets. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely 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, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0025] In the description of the utility model, it is necessary to explain that, unless there is explicit provision and limitation, the terms "mount", "set with", "connect" and the like should be understood broadly, for example, "connect", can be fixedly connected, also can be detachably connected, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements inside. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0026] Embodiment 1:

[0027] As the description of the specification Figures 1-4As shown, a brushless motor heat dissipation shell, including motor shell 1, the material of motor shell 1 is aluminum alloy or magnesium alloy, and the surface of motor shell 1 is treated by anodic oxidation to enhance its corrosion resistance and heat dissipation performance, the front and rear ends of motor shell 1 are respectively buckled and fixed with front end shell 2 and rear end shell 3, the inside of motor shell 1 is wrapped with motor body 4, the middle of motor body 4 is provided with rotating shaft 5, the outer surface of motor shell 1 is provided with a plurality of heat dissipation fins 6, and the plurality of heat dissipation fins 6 are uniformly distributed along the axial direction of motor shell 1, the cross-sectional shape of heat dissipation fin 6 is trapezoidal or rectangular, and the height of heat dissipation fin 6 gradually increases from one end of front end shell 2 to one end of rear end shell 3 of motor shell 1, heat dissipation channel 7 is formed between adjacent heat dissipation fins 6, heat dissipation channel 7 is used to enhance air flow and improve heat dissipation efficiency, the width of heat dissipation channel 7 gradually increases from one end of rear end shell 3 to one end of front end shell 2 of motor shell 1 to enhance the smoothness of air flow.

[0028] In the utility model, the inner surface of motor shell 1 is provided with heat conduction layer 8, heat conduction layer 8 is made of high-thermal-conductivity material, high-thermal-conductivity material includes one or more mixtures of aluminum, copper or aluminum alloy, heat conduction layer 8 is in direct contact with motor body 4 for conducting heat to heat dissipation fin 6.

[0029] In the utility model, a plurality of heat dissipation holes 9 are arranged at the position of heat dissipation channel 7 of motor shell 1, heat dissipation hole 9 is communicated with heat conduction layer 8 to further increase air circulation and improve heat dissipation effect.

[0030] In the utility model, the side of rear end shell 3 is connected with heat dissipation fan 10 through rotating shaft 5, the outside of heat dissipation fan 10 is covered with flow guide cover 11, the inner diameter of flow guide cover 11 is greater than the outer diameter of rear end shell 3, one side of flow guide cover 11 abuts against one end of heat dissipation fin 6, flow guide cover 11 is communicated with heat dissipation channel 7, a plurality of air inlets 14 are arranged on the other side of flow guide cover 11, flow guide cover 11 is used to force air flow to further improve heat dissipation efficiency, dust screen 12 is arranged at the connecting position of flow guide cover 11 and heat dissipation fin 6, dust screen 12 is annular and covers between flow guide cover 11 and motor shell 1, dust sheet 13 is arranged at the position of a plurality of air inlets 14 of flow guide cover 11 to prevent dust from entering the inside of flow guide cover 11.

[0031] In the utility model, when motor body 4 operates, the heat generated by motor body 4 is conducted to heat dissipation fin 6 and a plurality of heat dissipation holes 9 of motor shell 1 through heat conduction layer 8, and heat dissipation fan 10 is rotated by the rotation of rotating shaft 5 in the operation process of motor body 4, air is forced to enter heat dissipation channel 7 from flow guide cover 11, air flows in heat dissipation channel 7 and carries away the heat of heat dissipation fin 6 and a plurality of heat dissipation holes 9; at the same time, dust is prevented from entering the inside of flow guide cover 11 through dust screen 12 and dust sheet 13, and the long-term high-efficiency operation of the heat dissipation system is ensured.

[0032] The above describes the present application and its embodiments, which are not restrictive, and the specific embodiments shown are only one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired thereby, without departing from the spirit of the present application, without creative design, similar structure and embodiments to the technical solution, which should belong to the protection scope of the present application.

Claims

1. A brushless motor heat dissipation shell, comprising a motor shell (1), a front end shell (2) and a rear end shell (3) are respectively buckled and fixed at the front and rear ends of the motor shell (1), and a motor body (4) is wrapped in the inside of the motor shell (1), and a rotating shaft (5) is arranged in the middle of the motor body (4), characterized in that: The outer surface of the motor shell (1) is provided with a plurality of heat dissipation fins (6), and the plurality of heat dissipation fins (6) are uniformly distributed along the axial direction of the motor shell (1), and the heat dissipation channels (7) are formed between adjacent heat dissipation fins (6), which are used to enhance air flow and improve heat dissipation efficiency; The inner surface of the motor shell (1) is provided with a heat conduction layer (8), which is in direct contact with the motor body (4) and is used to conduct heat to the heat dissipation fins (6); The motor shell (1) is provided with a plurality of heat dissipation holes (9) at the heat dissipation channel (7), which are in communication with the heat conduction layer (8) and are used to further increase air flow and improve heat dissipation effect; The rear end shell (3) is connected to the heat dissipation fan (10) through the rotating shaft (5), and the outer side of the heat dissipation fan (10) is covered with the flow guide cover (11).

2. A heat dissipating housing for a brushless motor according to claim 1, characterized in that: The material of the motor shell (1) is aluminum alloy or magnesium alloy, and the surface of the motor shell (1) is subjected to anodic oxidation treatment to enhance its corrosion resistance and heat dissipation performance.

3. A heat dissipating housing for a brushless motor according to claim 1, wherein: The cross-sectional shape of the heat dissipation fin (6) is trapezoidal or rectangular, and the height of the heat dissipation fin (6) gradually increases from one end of the front end shell (2) to the other end of the rear end shell (3) of the motor shell (1).

4. The heat dissipating housing for brushless motor according to claim 1, wherein: The width of the heat dissipation channel (7) gradually increases from one end of the rear end shell (3) to the other end of the front end shell (2) of the motor shell (1) to enhance the smoothness of air flow.

5. A heat dissipating housing for a brushless motor according to claim 1, wherein: The heat conduction layer (8) is made of high thermal conductivity material, which includes one or more of aluminum, copper or aluminum alloy.

6. A heat dissipating housing for a brushless motor according to claim 1, wherein: The inner diameter of the flow guide cover (11) is greater than the outer diameter of the rear end shell (3), and one side of the flow guide cover (11) abuts one end of the heat dissipation fin (6), the flow guide cover (11) is in communication with the heat dissipation channel (7), and the other side of the flow guide cover (11) is provided with a plurality of air inlets (14), the flow guide cover (11) is used to force air flow, and the heat dissipation efficiency is further improved.

7. A heat dissipating housing for a brushless motor according to claim 6, characterized in that: The flow guide cover (11) is provided with a dust screen (12) at the connection with the heat dissipation fin (6), the dust screen (12) is annularly covered between the flow guide cover (11) and the motor shell (1), and the flow guide cover (11) is provided with a dust sheet (13) at the plurality of air inlets (14), which is used to prevent dust from entering the inside of the flow guide cover (11).

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