A brushless motor cooling assembly for an electric wool clipper

Abstract

The utility model relates to a brushless motor heat dissipation subassembly for electric wool shears, include: brushless motor, the heat dissipation fan blade is locked to the tail rotor axle tail end of brushless motor through fastening screw, the motor protection cover is sleeved in the outer periphery of brushless motor, the motor protection cover is trumpet shape, and the side is equipped with the air outlet, the fan blade protection cover is installed in the below of motor protection cover, the fan blade protection cover with motor protection cover clamping fixed connection, be equipped with the air inlet on the fan blade protection cover, the binding post is set up in the lower extreme of fan blade protection cover for connecting the lead and power cord of brushless motor. Through the motor protection cover of trumpet shape and equip the air inlet on the air outlet and lower end fan blade protection cover, can form good heat dissipation channel to improve the heat dissipation effect, avoid the hair to enter the motor inside simultaneously, prolong the service life of brushless motor, reduce the failure rate.

Description

Technical Field

[0001] This utility model relates to the field of motors, specifically to a heat dissipation component for a brushless motor used in electric wool shears. Background Technology

[0002] Electric wool shears are a type of electric tool that uses a motor to drive blades to trim wool. The shearing system mainly consists of upper and lower toothed blades. The upper toothed blade, driven by the motor, works in conjunction with the fixed lower toothed blade to swing and cut the wool.

[0003] Existing electric wool shears primarily employ three methods for motor cooling: 1. An internal fan within the motor; 2. A cooling fan directly mounted at the motor's rear; 3. An integrated fan mounted at the motor's rear. The first method has the disadvantage of allowing animal hair to enter the motor, severely impacting its lifespan. The second method suffers from poor airflow due to airflow being blocked by the motor's rear cover, leading to overheating. The third method offers the same ventilation effect as the second method, but requires a separate power supply for the fan, increasing the failure rate. Utility Model Content

[0004] The purpose of this invention is to provide a heat dissipation component for a brushless motor in an electric wool shearing machine, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a brushless motor heat dissipation assembly for electric wool shears, comprising: a brushless motor; The cooling fan blades are fastened to the tail end of the rotor shaft of the brushless motor by fastening screws. A motor protective cover is fitted around the brushless motor. The motor protective cover is horn-shaped and has an air outlet on the side. A fan blade protective cover is installed below the motor protective cover. The fan blade protective cover is snapped and fixedly connected to the motor protective cover. An air inlet is provided on the fan blade protective cover. The terminal block, located at the lower end of the fan blade protective cover, is used to connect the leads and power cord of the brushless motor.

[0006] Optionally, both the interior and exterior of the motor protective cover are horn-shaped.

[0007] Optionally, the terminal block is fixed to the lower end of the fan blade protective cover by an injection molding insert process.

[0008] Optionally, the air outlet and the air inlet are arranged opposite each other to form airflow convection.

[0009] Optionally, the motor protective cover is provided with several heat dissipation fins, which are arranged along the axial direction of the brushless motor.

[0010] Optionally, there is a gap between the outer edge of the heat dissipation fan blade and the inner wall of the fan blade protective cover.

[0011] Optionally, the fastening screw passes through the center hole of the cooling fan and is screwed into the threaded hole at the tail end of the brushless motor rotor shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention, through a horn-shaped motor protective cover equipped with an air outlet and an air inlet on the lower fan blade protective cover, can form a good heat dissipation channel, thereby improving the heat dissipation effect. At the same time, it prevents hair from entering the motor, extends the service life of the brushless motor, and reduces the failure rate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 for Figure 1 An explosion diagram. Detailed Implementation

[0014] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0015] like Figure 1-3 As shown, a heat dissipation assembly for a brushless motor in an electric wool shearing machine includes a brushless motor 1, a cooling fan 3, a motor protective cover 5, a terminal block 6, and a fan blade protective cover 4. The cooling fan 3 is fastened to the tail end of the rotor shaft of the brushless motor 1 by a fastening screw; the fastening screw passes through the central hole of the cooling fan 3 and is screwed into the threaded hole at the tail end of the rotor shaft of the brushless motor 1. The motor protective cover 5 is fitted around the outer periphery of the brushless motor 1, and the motor protective cover 5 is flared, with an air outlet 2 on its side. The fan blade protective cover 4 is installed below the motor protective cover 5, and the fan blade protective cover 4 is snapped and fixedly connected to the motor protective cover 5. The fan blade protective cover 4 has an air inlet 7. The terminal block 6 is located at the lower end of the fan blade protective cover 4 and is used to connect the lead wire and power cord of the brushless motor 1. There is a gap between the outer edge of the cooling fan 3 and the inner wall of the fan blade protective cover 4.

[0016] Furthermore, both the interior and exterior of the motor protective cover 5 are flared, and several heat dissipation fins 8 are provided on it, which are arranged along the axial direction of the brushless motor 1. The fan blade protective cover 4 is in direct contact with the heat dissipation fins 8, which can increase the airflow speed within the motor protective cover 5, forming an efficient airflow channel between the air inlet 7 and the air outlet 2. The air outlet 2 is arranged opposite to the air inlet 7 to form airflow convection, ensuring that the brushless motor 1 can dissipate heat quickly.

[0017] The terminal block 6 is fixed to the lower end of the fan blade protective cover 4 using an injection molding insert process. The use of an injection molding insert, with the insert serving as the terminal block, makes production and maintenance more convenient.

[0018] To further improve heat dissipation, the air outlet 2 can be located on the heat dissipation fin 8, i.e., the air outlet is created on the heat dissipation fin through processes such as drilling. Positioning the air outlet 2 on the heat dissipation fin 8 allows the airflow generated by the cooling fan to carry away heat more quickly, thus ensuring the normal and efficient operation of the brushless motor.

[0019] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content without departing from the scope of the technical solution of the present utility model, forming equivalent embodiments with equivalent changes. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A heat dissipation assembly for a brushless motor in electric wool shears, characterized in that, include: Brushless motor (1); Cooling fan blade (3), the cooling fan blade (3) is locked to the tail end of the rotor shaft of the brushless motor (1) by fastening screws; Motor protective cover (5), the motor protective cover (5) is fitted around the outer periphery of the brushless motor (1), the motor protective cover (5) is horn-shaped and has an air outlet (2) on the side. The fan blade protective cover (4) is installed below the motor protective cover (5). The fan blade protective cover (4) is engaged and fixedly connected with the motor protective cover (5). The fan blade protective cover (4) is provided with an air inlet (7). The terminal block (6) is located at the lower end of the fan blade protective cover (4) and is used to connect the lead wire and power line of the brushless motor (1).

2. The brushless motor heat dissipation assembly for electric wool shears according to claim 1, characterized in that, The motor protective cover (5) is horn-shaped both inside and outside.

3. The brushless motor heat dissipation assembly for electric wool shears according to claim 1, characterized in that, The terminal block (6) is fixed to the lower end of the fan blade protective cover (4) by injection molding insert process.

4. The heat dissipation assembly for a brushless motor in an electric wool shearing machine according to claim 1, characterized in that, The air outlet (2) is positioned opposite to the air inlet (7) to form airflow convection.

5. The heat dissipation assembly for a brushless motor in an electric wool shearing machine according to claim 1, characterized in that, The motor protective cover (5) is provided with several heat dissipation fins (8), which are arranged along the axial direction of the brushless motor (1).

6. The heat dissipation assembly for a brushless motor in an electric wool shearing machine according to claim 1, characterized in that, There is a gap between the outer edge of the heat dissipation fan blade (3) and the inner wall of the fan blade protective cover (4).

7. The brushless motor heat dissipation assembly for electric wool shears according to claim 1, characterized in that, The fastening screw passes through the center hole of the cooling fan (3) and is screwed into the threaded hole at the tail end of the rotor shaft of the brushless motor (1).

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