Single-phase brushless high-speed motor

Abstract

The utility model discloses a single-phase brushless high-speed motor in the field of brushless high-speed motors, which comprises a casing, a rotor and a stator, the stator is fixedly arranged inside the casing, the rotor is rotatably connected with the stator, one side of the casing is provided with a front cover plate through a screw, the other side of the casing is provided with a rear cover plate through a screw, and the rear cover plate is provided with a rotor. A sliding seat is fixedly arranged on the surface of the machine shell, a limiting plate is arranged in the sliding seat, the limiting plate extends in the length direction of the sliding seat, symmetrical clamping plates are fixedly arranged on the inner wall of the sliding seat, a clamping groove is formed between the clamping plates, and the clamping plates extend in the length direction of the sliding seat; the sliding seat is fixedly arranged on the surface of the machine shell, the limiting plate is arranged in the sliding seat, extra support is provided through the limiting plate, vibration generated by the motor during high-speed operation is reduced, and unstable connection of the motor during high-speed operation caused by vibration is avoided.

Description

Technical Field

[0001] This utility model relates to the field of brushless high-speed motors, specifically a single-phase brushless high-speed motor. Background Technology

[0002] A single-phase brushless high-speed motor is a type of motor that combines brushless technology with high-speed characteristics. The stator of a brushless DC motor is a coil-wound armature, and the rotor is a permanent magnet. During motor operation, the driver detects the rotor's position in real time based on signals from the rotor position sensor and controls the switching of the power transistors in the inverter bridge, causing the stator to generate a rotating magnetic field with a uniformly changing direction. This rotating magnetic field interacts with the permanent magnets on the rotor, generating torque and driving the motor to operate at high speed. Because brushless motors use electronic commutators instead of traditional mechanical commutators and brushes, they avoid problems such as sparks, electromagnetic interference, and noise generated during mechanical commutation, while simultaneously improving the motor's reliability and lifespan.

[0003] Currently available high-speed brushless motors, as shown in patent publication CN106877556A, include: a frame; a rotor assembly including a magnet, a bearing assembly, an impeller, and a shaft; and a stator assembly including a stator core and a bobbin. The frame has an inner wall and an outer wall, the outer wall surrounding the inner wall and defining an annular channel between the outer and inner walls, and diffuser blades extending from the inner wall to the outer wall through the annular channel. The inner wall defines apertures for supporting the rotor assembly, and the outer wall defines a generally cylindrical housing of the motor.

[0004] The high-speed brushless motor with the above structure also has the following drawbacks: Electromagnetic imbalance can cause electromagnetic force fluctuations during motor operation, which in turn can cause motor vibration. This vibration may intensify as the motor speed increases, adversely affecting the motor's performance and lifespan. Since there is no fixed structure to fix the motor, when the motor vibrates, the vibration can easily be transmitted through the housing, causing the motor to shake during high-speed operation and potentially detach from its mounting position. Vibration can also lead to unstable motor connections. In addition, during motor assembly, the spring length needs to be compressed to a certain space before installation, requiring the use of special clamps or screwdrivers, making assembly and disassembly inconvenient and limiting its practicality. Utility Model Content

[0005] In order to overcome the shortcomings of existing technical solutions, this utility model provides a single-phase brushless high-speed motor, which can effectively solve the technical problems of existing motors being prone to vibration during high-speed operation, resulting in unstable motor connection and inconvenient installation and disassembly.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a single-phase brushless high-speed motor, including a housing, a rotor and a stator. The stator is fixedly disposed inside the housing, and the rotor is rotatably connected to the stator. A front cover plate is installed on one side of the housing by screws, and a rear cover plate is installed on the other side of the housing by screws. A sliding seat is fixedly disposed on the surface of the housing. A limiting plate is disposed inside the sliding seat and extends along the length direction of the sliding seat. Symmetrical locking plates are fixedly disposed on the inner wall of the sliding seat, and locking grooves are formed between the locking plates. The locking plates extend along the length direction of the sliding seat.

[0007] Furthermore, the rotor is provided with an axially extending shaft inside the rotor, one end of the shaft extending to the outside of the front cover plate and the other end extending to the outside of the rear cover plate.

[0008] Furthermore, the surfaces of both the front cover and the rear cover are provided with a number of heat dissipation vents, which are arranged in a circular pattern.

[0009] Furthermore, a plurality of positioning posts are fixedly disposed on the surface of the stator, and the plurality of positioning posts are equidistantly arranged along the circumference of the stator. A plurality of winding coils are arranged around the surface of the positioning posts, and the plurality of winding coils have the same number of turns.

[0010] Furthermore, the length of the housing is the same as the length of the sliding seat.

[0011] Furthermore, a number of permanent magnet blocks are fixedly disposed on the surface of the rotor, and the number of permanent magnet blocks are equidistantly distributed along the circumference of the rotor.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a single-phase brushless high-speed motor. By fixing a sliding seat on the surface of the housing and setting a limiting plate inside the sliding seat, the limiting plate provides additional support, which helps to reduce the vibration generated by the motor when running at high speed and avoids unstable connection caused by vibration of the high-speed motor. At the same time, the combination of the locking plate and the locking groove makes it easy to install and disassemble the high-speed motor. The motor can be quickly installed and disassembled by sliding. Attached Figure Description

[0013] Figure 1 This is a front view of a single-phase brushless high-speed motor according to this utility model;

[0014] Figure 2 This is a side view of a single-phase brushless high-speed motor according to the present invention.

[0015] Figure 3 This is a schematic diagram of the stator structure of a single-phase brushless high-speed motor according to the present invention;

[0016] Figure 4 This is a schematic diagram of the rotor structure of a single-phase brushless high-speed motor according to the present invention;

[0017] Figure 5 This is a schematic diagram of the sliding seat of a single-phase brushless high-speed motor according to this utility model.

[0018] Figure 2 for

[0019] Numbers in the figure:

[0020] 1-Front cover plate; 2-Housing housing; 3-Rear cover plate; 4-Heat dissipation vent; 5-Sliding seat; 6-Shaft; 7-Stator; 8-Positioning column; 9-Winding coil; 10-Rotor; 11-Permanent magnet block; 12-Limiting plate; 13-Clamping plate; 14-Clamping groove. Detailed Implementation

[0021] 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.

[0022] like Figures 1-5 As shown, a single-phase brushless high-speed motor includes a housing 2, a rotor 10, and a stator 7. The stator 7 is fixedly disposed inside the housing 2, and the rotor 10 is rotatably connected to the stator 7. A front cover plate 1 is installed on one side of the housing 2 by screws, and a rear cover plate 3 is installed on the other side of the housing 2 by screws. A sliding seat 5 is fixedly disposed on the surface of the housing 2. A limiting plate 12 is disposed inside the sliding seat 5 and extends along the length direction of the sliding seat 5. Symmetrical engaging plates 13 are fixedly disposed on the inner wall of the sliding seat 5, and engaging grooves 14 are formed between the engaging plates 13. The engaging plates 13 extend along the length direction of the sliding seat 5.

[0023] The rotor 10 has an axially extending shaft 6 inside, with one end of the shaft 6 extending to the outside of the front cover plate 1 and the other end extending to the outside of the rear cover plate 3. The shaft 6 allows for better power transmission. A thread is provided on the shaft 6 near the front cover plate 1 for easy connection to external equipment. Both the front cover plate 1 and the rear cover plate 3 have several heat dissipation vents 4 arranged circumferentially. These vents promote airflow inside the motor, accelerating heat dissipation and reducing the motor's operating temperature. The stator 7 has several positioning posts 8 fixedly mounted on its surface, arranged circumferentially along the stator 7. The stator 7 is structurally strengthened by the positioning posts 8, which are arranged at a distance from each other. The length of the housing 2 is the same as that of the sliding seat 5. The rotor 10 is fixedly provided with a number of permanent magnet blocks 11, which are equidistantly arranged along the circumference of the rotor 10. This allows the rotor 10 to generate a uniform magnetic field during rotation, which interacts with the winding coils 9 on the stator 7 to produce a stable electromagnetic torque. At the same time, the equidistant arrangement of the permanent magnet blocks 11 also helps to reduce magnetic reluctance and eddy current losses, thereby improving the efficiency and performance of the motor.

[0024] This embodiment of a single-phase brushless high-speed motor features a sliding seat 5 fixedly mounted on the surface of the housing 2, with a limiting plate 12 inside the sliding seat 5. The limiting plate 12 provides additional support, helping to reduce vibration generated by the motor during high-speed operation and preventing unstable connection due to vibration. Simultaneously, the engagement plate 13 and engagement groove 14 facilitate the installation and disassembly of the high-speed motor. The motor can be quickly installed and disassembled by sliding. In use, the sliding seat 5 of the high-speed motor is slidably connected to the engagement position on the external device, fixing both sides of the motor to the engagement position on the external device. This ensures that both sides of the motor are fixed, and the high-speed motor is connected to the external device by sliding, reducing the need for special clamps, screwdrivers, etc. The vibration generated by the motor can be absorbed by the sliding seat 5.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A single-phase brushless high-speed motor, comprising a housing, a rotor, and a stator, wherein the stator is fixedly disposed inside the housing, the rotor is rotatably connected to the stator, a front cover plate is screwed onto one side of the housing, and a rear cover plate is screwed onto the other side of the housing, characterized in that: A sliding seat is fixedly provided on the surface of the housing. A limiting plate is provided inside the sliding seat. The limiting plate extends along the length direction of the sliding seat. Symmetrical locking plates are fixedly provided on the inner wall of the sliding seat. Locking grooves are formed between the locking plates. The locking plates extend along the length direction of the sliding seat.

2. The single-phase brushless high-speed motor according to claim 1, characterized in that: The rotor has an internal shaft that passes through it axially. One end of the shaft extends to the outside of the front cover plate, and the other end extends to the outside of the rear cover plate.

3. A single-phase brushless high-speed motor according to claim 1, characterized in that: The surfaces of both the front and rear cover plates are provided with several heat dissipation vents, which are arranged in a circular pattern.

4. A single-phase brushless high-speed motor according to claim 1, characterized in that: The surface of the stator is fixedly provided with a number of positioning posts, which are equidistantly arranged along the circumference of the stator. The surface of the positioning posts is surrounded by a number of winding coils, all of which have the same number of turns.

5. A single-phase brushless high-speed motor according to any one of claims 1-4, characterized in that: The length of the housing is the same as the length of the sliding seat.

6. A single-phase brushless high-speed motor according to any one of claims 1-4, characterized in that: The rotor has several permanent magnet blocks fixedly disposed on its surface, and the permanent magnet blocks are arranged at equal intervals along the circumference of the rotor.

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