High-speed brushless motor

Abstract

The utility model relates to the technical field of motor heat dissipation, which comprises a machine body, the machine body comprises a shaft rod, a fan blade, a spring, two bearings, an air duct shell, a stator, a magnet and a PCB, the middle part of the air duct shell is provided with a mounting seat, the fan blade is arranged at the upper part of the mounting seat, the stator is arranged at the lower part of the mounting seat, the two bearings and the spring are arranged in the mounting seat, and the magnet is arranged in the mounting seat. The two bearings are arranged on the stator, the spring is arranged between the two bearings, the shaft rod is sequentially inserted into the stator, the two bearings and the spring to the middle of the fan blade, the magnet is installed at the bottom of the shaft rod and located in the stator, the PCB is connected with the stator through the pins, and the number of the pins is three. According to the high-speed brushless motor provided by the utility model, the two bearings are arranged, so that the motor is low in noise and long in service life when the motor rotates; in addition, the brushless motor is small in overall size and convenient to carry, the grade of the fan is improved, and the brushless motor is deeply loved by consumers.

Description

Technical Field

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

[0002] Existing brushed and brushless motors are widely used in fans, but they still have some problems, such as large fan size, inconvenience in carrying, short motor life, and loud noise. Therefore, there is an urgent need for a new type of motor to solve these problems. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a high-speed brushless motor to solve the problems of high noise and large size in existing motors.

[0005] (II) Technical Solution

[0006] This utility model provides the following technical solution: a high-speed brushless motor, comprising a body, wherein the body includes a shaft, a fan blade, a spring, two bearings, a duct housing, a stator, a magnet, and a PCB board. A mounting base is provided in the middle of the duct housing. The fan blade is located on the upper part of the mounting base, and the stator is located on the lower part of the mounting base. The two bearings and the spring are located within the mounting base, with the spring positioned between the two bearings. The shaft is sequentially inserted into the stator, the two bearings, and the spring, extending to the middle of the fan blade. The magnet is installed at the bottom of the shaft and located within the stator. The PCB board is connected to the stator via pins, with three pins provided.

[0007] Preferably, the upper part of the mounting base is a fan blade chamber, the interior is a bearing chamber, and the lower part is a stator chamber, wherein the inner diameter of the stator chamber is 15mm.

[0008] Preferably, a plurality of heat guide plates are provided between the inner side of the air duct housing and the outer side of the mounting base, and a plurality of air duct heat dissipation holes are provided on the mounting base.

[0009] Preferably, the annular array of heat dissipation holes in the air duct is located outside the bearing chamber and communicates with the stator chamber.

[0010] Preferably, the air duct heat dissipation holes and heat guide plate are arranged along the vertical direction of the mounting base.

[0011] Preferably, the outer diameter of the air duct shell is 25mm.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a high-speed brushless motor with the following characteristics:

[0014] Beneficial effects:

[0015] 1. This high-speed brushless motor mainly includes a shaft, fan blades, springs, two bearings, a duct housing, a stator, magnets, and a PCB board. The duct housing has a mounting base in the middle. The fan blades are mounted on the upper part of the mounting base, and the stator is mounted on the lower part of the mounting base. The two bearings and springs are located inside the mounting base, with the springs positioned between the two bearings. The shaft is a central shaft, concentric with the fan blades and stator. During installation, it is inserted into the stator, the two bearings, the springs, and the fan blades to secure them.

[0016] 2. The brushless motor is connected to the PCB board via three pins at the bottom of the stator, which are used to control the motor's on / off state, the fan blades' start and stop. By setting two bearings, the motor operates with low noise and has a long service life. In addition, the brushless motor is small in size and easy to carry, making it popular with consumers in the market. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the split structure of an embodiment of a high-speed brushless motor according to the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of an embodiment of a high-speed brushless motor according to the present invention;

[0019] Figure 3 This is a schematic front view of an embodiment of a high-speed brushless motor according to the present invention;

[0020] Figure 4 for Figure 3 A cross-sectional view of AA.

[0021] In the diagram: 100, body; 1, shaft; 2, fan blade; 3, spring; 4, bearing; 5, duct housing; 51, mounting base; 52, heat guide plate; 53, duct heat dissipation hole; 6, stator; 61, pin; 7, magnet; 8, PCB board. Detailed Implementation

[0022] 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.

[0023] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a high-speed brushless motor.

[0024] Please see Figure 1-4A high-speed brushless motor includes a body 100, which includes a shaft 1, a fan blade 2, a spring 3, two bearings 4, a duct housing 5, a stator 6, a magnet 7, and a PCB board 8. The duct housing 5 has a mounting base 51 in the middle. The fan blade 2 is located on the upper part of the mounting base 51, and the stator 6 is located on the lower part of the mounting base 51. The two bearings 4 and the spring 3 are located inside the mounting base 51, with the spring 3 located between the two bearings 4. The shaft 1 is inserted into the stator 6, the two bearings 4, and the spring 3 in sequence, up to the middle of the fan blade 2. The magnet 7 is installed at the bottom of the shaft 1 and located inside the stator 6. The PCB board 8 is connected to the stator 6 by three pins 61.

[0025] This utility model discloses a high-speed brushless motor, mainly comprising a shaft 1, a fan blade 2, a spring 3, two bearings 4, a duct housing 5, a stator 6, a magnet 7, and a PCB board 8. The duct housing 5 has a mounting base 51 in the middle. The fan blade 2 is mounted on the upper part of the mounting base 51, and the stator 6 is mounted on the lower part of the mounting base 51. The two bearings 4 and the spring 3 are disposed within the mounting base 51, with the spring 3 positioned between the two bearings 4. The shaft 7 serves as the central shaft, concentric with the fan blade 2 and the stator 6. During installation, it is inserted into the stator 6, the two bearings 4, the spring 3, and the fan blade 2 for mounting and fixing. The brushless motor is connected to the PCB board 8 via three pins 61 at the bottom of the stator 6, used to control the motor's on / off state and the fan blade's start and stop. This high-speed brushless motor features two bearings, resulting in low motor noise (≤40dB) and a long service life (≥1000 hours) during rotation. Furthermore, the brushless motor is small in size and easy to carry, making it popular with consumers in the market.

[0026] In a preferred embodiment, refer to Figure 1-4 The mounting base 51 of this high-speed brushless motor has a fan blade chamber at the top, a bearing chamber inside, and a stator chamber at the bottom. The inner diameter of the stator chamber is 15mm, and the outer diameter of the air duct shell is 25mm, further reducing the size of the motor. The fan blade 2 is placed in the fan blade chamber, two bearings 4 and a spring 3 are placed in the bearing chamber, and the stator 6 is placed in the stator chamber. In use, the magnet 7 rotates inside the stator 6, driving the fan blade 2 at the upper end of the shaft 1 to rotate.

[0027] In a preferred embodiment, refer to Figure 1-4The high-speed brushless motor has multiple heat-conducting plates 52 between the inner side of the air duct housing 5 and the outer side of the mounting base 51, and multiple air duct heat dissipation holes 53 on the mounting base 51. The air duct heat dissipation holes 53 are arranged in a ring array outside the bearing chamber and communicate with the stator chamber. The air duct heat dissipation holes 53 and the heat-conducting plates 52 are arranged along the vertical direction of the mounting base 51. The air duct housing 5 is used to dissipate heat from the brushless motor, conduct the heat generated by the motor away, thereby reducing the temperature rise of the motor and playing a role in cooling. Specifically, by setting multiple air duct heat dissipation holes 53 on the mounting base 51, the airflow generated by the motor fan blades 51 during rotation is ensured to be transferred from the air duct heat dissipation holes 53 to the lower stator, thereby achieving the effect of cooling. In addition, the heat guide plate 52 directs the air generated by the fan blades inward, but does not directly deliver the air to the stator. The air duct heat dissipation hole 53 can directly deliver the air to the lower stator 6, thereby achieving the cooling effect. When the fan blades rotate, they generate air, which is delivered to the stator chamber through the air duct heat dissipation hole 53 to dissipate heat from the stator. The air is also delivered to the inside of the fan through the guide plate 52 for heat dissipation.

[0028] 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-speed brushless motor, comprising a body, characterized in that, The machine body includes a shaft, a fan blade, a spring, two bearings, a duct housing, a stator, a magnet, and a PCB board. A mounting base is located in the middle of the duct housing. The fan blade is positioned on the upper part of the mounting base, and the stator is positioned on the lower part of the mounting base. The two bearings and the spring are located within the mounting base, with the spring positioned between the two bearings. The shaft is sequentially inserted into the stator, the two bearings, and the spring, extending to the middle of the fan blade. The magnet is installed at the bottom of the shaft and located within the stator. The PCB board is connected to the stator via three pins.

2. The high-speed brushless motor according to claim 1, characterized in that, The upper part of the mounting base is the fan blade chamber, the interior is the bearing chamber, and the lower part is the stator chamber. The inner diameter of the stator chamber is 15mm.

3. The high-speed brushless motor according to claim 1, characterized in that, Multiple heat guide plates are provided between the inner side of the air duct shell and the outer side of the mounting base, and multiple air duct heat dissipation holes are provided on the mounting base.

4. The high-speed brushless motor according to claim 3, characterized in that, The annular array of heat dissipation holes in the air duct is located outside the bearing chamber and is connected to the stator chamber.

5. The high-speed brushless motor according to claim 3, characterized in that, The air duct heat dissipation holes and heat guide plate are arranged along the vertical direction of the mounting base.

6. The high-speed brushless motor according to claim 1, characterized in that, The outer diameter of the duct shell is 25mm.

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