Brushless AC motor

Abstract

The utility model relates to the technical field of brushless AC motors, and discloses a brushless AC motor, which comprises a shell (1), the shell (1) comprises a lower shell (2) and an upper shell (3), the lower shell (2) is connected with the upper shell (3), a groove body (201) is arranged in the lower shell (2), a boss (301) is arranged on the upper shell (3), a stator (4) is arranged in the boss (301), a rotor (5) is arranged on the inner side of the stator (4), the rotor (5) is connected with a rotating shaft (6), and the end part of the rotating shaft (6) extends out of the boss (301). The brushless alternating current motor designed by the utility model is compact in structure and low in magnetic noise, the rotating speed range can be preset, and the temperature rise is in a normal temperature range.

Description

Technical Field

[0001] The utility model relates to the technical field of brushless AC motors, and particularly relates to a brushless AC motor. Background Art

[0002] An AC motor is a machine used to realize the mutual conversion of mechanical energy and AC electrical energy. Due to the huge development of the AC power system, AC motors have become the most commonly used motors. Compared with DC motors, AC motors have a simpler structure, are easier to manufacture, are more robust, and are easier to make into motors with high speed, high voltage, large current, and large capacity. With the development of technology, most current AC motors are energy-saving integrated motors.

[0003] A brushless AC motor is a high-performance motor with a large market demand. The existing brushless AC motors do not operate stably enough, have relatively large noise and vibration, the braking effect is not high enough, and some bad vibrations are likely to occur during braking, which will also cause damage to the motor itself. Summary of the Utility Model

[0004] The utility model aims at the deficiencies in the prior art and provides a brushless AC motor.

[0005] To solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A brushless AC motor includes a housing, which includes a lower housing and an upper housing. The lower housing and the upper housing are connected. A groove body is provided in the lower housing, and a boss is provided on the upper housing. A stator is provided in the boss, a rotor is provided inside the stator, the rotor is connected with a rotating shaft, and the end of the rotating shaft extends out of the boss.

[0007] Preferably, an annular installation groove is provided in the stator, and a plurality of coils are provided in the installation groove.

[0008] Preferably, a baffle is provided on the inner circle of the installation groove, and an installation hole is provided inside the baffle. The rotor is arranged in the installation hole.

[0009] Preferably, a circuit board is installed in the groove body, and the circuit board is connected with the coil.

[0010] Preferably, a lower fixing part extends outwards from the lower housing, and an upper fixing part extends outwards from the upper housing. The lower fixing part and the upper fixing part are connected.

[0011] Preferably, a lower fixing hole is provided on the lower fixing part, and an upper fixing hole is provided on the upper fixing part. The lower fixing hole and the upper fixing hole are communicated.

[0012] Due to the adoption of the above technical solutions, the utility model has remarkable technical effects: the brushless AC motor designed in this application is not only structurally compact, but also has low magnetic noise, a preset speed range, and a temperature rise within the normal temperature range. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the utility model.

[0014] Figure 2 is a schematic structural diagram of the lower housing.

[0015] Figure 3 is a schematic structural diagram of the stator and the coil.

[0016] Figure 4 is a schematic structural diagram of the circuit board.

[0017] The names of the parts referred to by the respective numerical labels in the above drawings are as follows: among them, 1 - housing, 2 - lower housing, 201 - groove body, 202 - lower fixing part, 2021 - lower fixing hole, 3 - upper housing, 301 - boss, 302 - upper fixing part, 3021 - upper fixing hole, 4 - stator, 401 - mounting groove, 402 - coil, 403 - baffle, 404 - mounting hole, 5 - rotor, 6 - rotating shaft, 7 - circuit board. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will further describe the present utility model in detail in conjunction with Figures 1-4 the accompanying drawings and embodiments.

[0019] Embodiment 1

[0020] A brushless AC motor includes a housing 1, the housing 1 includes a lower housing 2 and an upper housing 3, the lower housing 2 and the upper housing 3 are connected, a groove body 201 is provided inside the lower housing 2, a boss 301 is provided on the upper housing 3, a stator 4 is provided inside the boss 301, a rotor 5 is provided inside the stator 4, (the rotor 5 is not shown in the drawings) the rotor 5 is connected with a rotating shaft 6, and the end of the rotating shaft 6 extends out of the boss 301. In this embodiment, the groove body 201 and the boss 301 form an installation space for installing the stator 4 and the rotor 5.

[0021] An annular mounting groove 401 is provided inside the stator 4, and a plurality of coils 402 are provided inside the mounting groove 401. In this embodiment, the number of coils 402 is 6.

[0022] A baffle 403 is provided on the inner ring of the mounting groove 401, and mounting holes 404 are provided inside the baffle 403. The rotor 5 is arranged inside the mounting holes 404.

[0023] A circuit board 7 is installed inside the groove body 201, and the circuit board 7 is connected with the coil 402.

[0024] The lower housing 2 extends outwardly with a lower fixing portion 202, and the upper housing 3 extends outwardly with an upper fixing portion 302. The lower fixing portion 202 and the upper fixing portion 302 are connected. The motor is installed and fixed through the lower fixing portion 202 and the upper fixing portion 302.

[0025] The lower fixing portion 202 is provided with a lower fixing hole 2021, and the upper fixing portion 302 is provided with an upper fixing hole 3021. The lower fixing hole 2021 and the upper fixing hole 3021 are communicated.

[0026] Working principle: An installation space is formed by the groove body 201 and the boss 301 for installing the stator 4 and the rotor 5. The stator 4 is composed of a plurality of coils uniformly distributed in the installation groove 401. By the magnetic field change generated by the energized coils of the stator 4, the rotor 5 is driven to rotate, and the rotor 5 drives the rotating shaft 6 to rotate. It is not only structurally compact but also has low magnetic noise.

[0027] Embodiment 2

[0028] A brushless AC motor includes a housing 1, the housing 1 includes a lower housing 2 and an upper housing 3, the lower housing 2 and the upper housing 3 are connected, a groove body 201 is provided in the lower housing 2, a boss 301 is provided on the upper housing 3, a stator 4 is provided in the boss 301, a rotor 5 is provided inside the stator 4, the rotor 5 is connected with a rotating shaft 6, and the end of the rotating shaft 6 extends out of the boss 301. In this embodiment, the groove body 201 and the boss 301 form an installation space for installing the stator 4 and the rotor 5.

[0029] Embodiment 3

[0030] A brushless AC motor includes a housing 1, the housing 1 includes a lower housing 2 and an upper housing 3, the lower housing 2 and the upper housing 3 are connected, a groove body 201 is provided in the lower housing 2, a boss 301 is provided on the upper housing 3, a stator 4 is provided in the boss 301, a rotor 5 is provided inside the stator 4, the rotor 5 is connected with a rotating shaft 6, and the end of the rotating shaft 6 extends out of the boss 301. In this embodiment, the groove body 201 and the boss 301 form an installation space for installing the stator 4 and the rotor 5.

[0031] An annular installation groove 401 is provided in the stator 4, and a plurality of coils 402 are provided in the installation groove 401. In this embodiment, the number of coils 402 is 6.

[0032] A baffle 403 is provided on the inner ring of the installation groove 401, and an installation hole 404 is provided inside the baffle 403. The rotor 5 is arranged in the installation hole 404.

[0033] A circuit board 7 is installed in the groove body 201, and the circuit board 7 is connected with the coils 402.

[0034] The lower housing 2 extends outwardly with a lower fixing portion 202, and the upper housing 3 extends outwardly with an upper fixing portion 302. The lower fixing portion 202 and the upper fixing portion 302 are connected. The motor is installed and fixed by the lower fixing portion 202 and the upper fixing portion 302.

Claims

1. A brushless AC motor, comprising a housing (1), the housing (1) including a lower housing (2) and an upper housing (3), the lower housing (2) and the upper housing (3) being connected, characterized in that: A groove body (201) is provided inside the lower housing (2), a boss (301) is provided on the upper housing (3), a stator (4) is provided inside the boss (301), a rotor (5) is provided inside the stator (4), the rotor (5) is connected with a rotating shaft (6), and the end of the rotating shaft (6) extends out of the boss (301).

2. The brushless AC motor according to claim 1, wherein: An annular mounting groove (401) is provided inside the stator (4), and a plurality of coils (402) are provided inside the mounting groove (401).

3. The brushless AC motor according to claim 2, wherein: A baffle (403) is provided on the inner ring of the mounting groove (401), a mounting hole (404) is provided inside the baffle (403), and the rotor (5) is arranged inside the mounting hole (404).

4. A brushless AC motor according to claim 2, characterized in that: A circuit board (7) is installed inside the groove body (201), and the circuit board (7) is connected with the coils (402).

5. A brushless AC motor according to claim 1, characterized in that: A lower fixing part (202) extends outwards on the lower housing (2), an upper fixing part (302) extends outwards on the upper housing (3), and the lower fixing part (202) is connected with the upper fixing part (302).

6. The brushless AC motor according to claim 5, wherein: A lower fixing hole (2021) is provided on the lower fixing part (202), an upper fixing hole (3021) is provided on the upper fixing part (302), and the lower fixing hole (2021) communicates with the upper fixing hole (3021).

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