Noise reduction motor structure

Abstract

The utility model relates to the technical field of motor noise reduction, in particular to a noise reduction motor structure, which comprises an air duct assembly, a stator assembly is mounted in the air duct assembly, a rotor assembly is mounted on the stator assembly, an elastic element is arranged on the rotor assembly, and a rear cover assembly is mounted on the air duct assembly. The stator assembly, the rotor assembly and the interior of the air duct assembly are installed in a matched mode, electric energy is converted into kinetic energy, the rotor assembly can rotate at a high speed in the air duct assembly, the elastic element and the rotor assembly are installed in a matched mode, motor clearance can be well eliminated, and meanwhile motor systematic noise can be well reduced.

Description

Technical Field

[0001] This utility model relates to a motor structure, specifically a noise-reducing motor structure, and belongs to the field of motor noise reduction technology. Background Technology

[0002] As an important power output device in modern industry, electric motors are widely used in mechanical equipment, automation systems and household appliances. During operation, electric motors are prone to generating systematic noise due to factors such as mechanical vibration between the rotor and stator, electromagnetic force fluctuations and aerodynamic noise. The noise problem is more significant, especially under high-speed operation conditions. This not only affects the comfort of the equipment operating environment, but may also interfere with the stability of precision instruments.

[0003] In the prior art, improvements to motor noise reduction are made by placing elastic shims or rubber rings at the motor shaft end to absorb vibration energy. However, these methods have limited ability to adjust rotor clearance, and eliminating clearance material will generate additional noise.

[0004] Therefore, there is an urgent need for a structure that can eliminate motor backlash while effectively reducing motor system noise. Utility Model Content

[0005] The purpose of this invention is to provide a noise-reducing motor structure to solve the above problems, which can effectively eliminate motor backlash and reduce motor system noise.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a noise-reducing motor structure, including a duct assembly, a stator assembly installed inside the duct assembly, a rotor assembly installed on the stator assembly, an elastic element provided on the rotor assembly, and a rear cover assembly installed on the duct assembly.

[0007] Preferably, the rotor assembly includes a motor shaft, and the motor shaft is rotatably connected to the center of the air duct assembly. A magnet is mounted on the motor shaft, and the magnet is rotatably connected to the stator assembly via the motor shaft.

[0008] Preferably, a first positioning ring and a second positioning ring are respectively installed at both ends of the motor shaft.

[0009] Preferably, the elastic element can also be located outside the first positioning ring.

[0010] Preferably, the elastic element can also be located outside the second positioning ring.

[0011] Preferably, the elastic element can also be disposed between the first positioning ring and the magnet.

[0012] Preferably, the elastic element can also be disposed between the second positioning ring and the magnet.

[0013] Preferably, there may be two elastic elements, one disposed between the first positioning ring and the magnet, and the other disposed outside the second positioning ring.

[0014] Preferably, there may be two elastic elements, one disposed between the second positioning ring and the magnet, and the other disposed outside the first positioning ring.

[0015] Preferably, there may be two elastic elements, one located outside the first positioning ring and the other located outside the second positioning ring.

[0016] Preferably, a fan blade is mounted on one end of the motor shaft, and the fan blade is rotatably connected to the inner side of one end of the air duct assembly via the motor shaft.

[0017] Preferably, the fan blade and air duct assembly are made of plastic injection molding, and the inner side of the air duct assembly has an arc-shaped structure.

[0018] The beneficial effects of this utility model are: by cooperating and installing the stator assembly, rotor assembly and air duct assembly inside, electrical energy is converted into kinetic energy, enabling the rotor assembly to rotate at high speed inside the air duct assembly. By cooperating and installing the elastic element with the rotor assembly, motor backlash can be effectively eliminated, and motor system noise can be effectively reduced. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the elastic element of this utility model located on the side end of the positioning ring;

[0021] Figure 3 This is a schematic diagram of the structure of the elastic element of this utility model, which is located between the positioning ring and the magnet.

[0022] In the diagram: 1. Fan blade; 2. Air duct assembly; 3. Stator assembly; 4. Rotor assembly; 401. Motor shaft; 402. First positioning ring; 403. Magnet; 404. Second positioning ring; 5. Elastic element; 6. Rear cover assembly. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-3As shown, a noise-reducing motor structure includes a duct assembly 2, a stator assembly 3 installed inside the duct assembly 2, a rotor assembly 4 installed on the stator assembly 3, an elastic element 5 provided on the rotor assembly 4, and a rear cover assembly 6 installed on the duct assembly 2.

[0025] As a technical optimization of this utility model, the rotor assembly 4 includes a motor shaft 401. The motor shaft 401 is rotatably connected to the center of the air duct assembly 2. A magnet 403 is installed on the motor shaft 401. The magnet 403 is rotatably connected to the stator assembly 3 through the motor shaft 401. The installation of the motor shaft 401 facilitates the connection of the magnet 403. With the cooperation of the magnet 403, the motor shaft 401 and the stator assembly 3 rotate at high speed inside the air duct assembly 2 under the drive of electric energy.

[0026] As a technical optimization of this utility model, a first positioning ring 402 and a second positioning ring 404 are respectively installed at both ends of the motor shaft 401. The installation of the two elastic elements 5 helps to increase the noise reduction effect.

[0027] As a technical optimization of this utility model, the elastic element 5 can also be disposed outside the first positioning ring 402, outside the second positioning ring 404, between the first positioning ring 402 and the magnet 403, or between the second positioning ring 404 and the magnet 403. There can be two elastic elements 5, one disposed between the first positioning ring 402 and the magnet 403, and the other outside the second positioning ring 404. Alternatively, there can be two elastic elements 5, one disposed between the second positioning ring 404 and the magnet 403, and the other outside the first positioning ring 402. Or, there can be two elastic elements 5, one disposed outside the first positioning ring 402, and the other outside the second positioning ring 404.

[0028] As a technical optimization of this utility model, a fan blade 1 is installed at one end of the motor shaft 401. The fan blade 1 is rotatably connected to the inner side of one end of the air duct assembly 2 through the motor shaft 401. By installing the fan blade 1, the motor shaft 401 drives the fan blade 1 to rotate at high speed, thereby performing air blowing work.

[0029] As a technical optimization of this utility model, the fan blade 1 and the air duct assembly 2 are made of plastic injection molding. The inner side of the air duct assembly 2 has an arc-shaped structure, which is beneficial for reducing weight, increasing rotation speed, and allowing external air to enter smoothly.

[0030] In use, the stator assembly 3 is first fixedly installed inside the air duct assembly 2. Then, the magnet 403 is installed in conjunction with the motor shaft 401, and a first positioning ring 402, a second positioning ring 404, and two elastic elements 5 are installed at both ends of the motor shaft 401. Subsequently, the motor shaft 401 is installed in conjunction with the air duct assembly 2, allowing the motor shaft 401 and the air duct assembly 2 to rotate. Finally, the rear cover assembly 6 is closed, and the fan blade 1 is installed at the other end of the motor shaft 401. By connecting an external power source, the electrical energy generates a magnetic field. With the cooperation of the magnet 403 and the stator assembly 3, the motor shaft 401 drives the fan blade 1 to rotate at high speed, realizing the blowing operation. With the cooperation of the elastic elements 5, the motor backlash is effectively eliminated, and the system noise of the motor is significantly reduced.

[0031] 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, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A noise-reducing motor structure, comprising an air duct assembly (2), characterized in that: The air duct assembly (2) is equipped with a stator assembly (3), and a rotor assembly (4) is installed on the stator assembly (3). An elastic element (5) is provided on the rotor assembly (4). The rotor assembly (4) includes a motor shaft (401). The motor shaft (401) is rotatably connected to the center of the air duct assembly (2). A first positioning ring (402) and a second positioning ring (404) are respectively installed at both ends of the motor shaft (401). The elastic element (5) is located outside the first positioning ring (402). A rear cover assembly (6) is installed on the air duct assembly (2). The inner side of the air duct assembly (2) has an arc-shaped structure.

2. The noise-reducing motor structure according to claim 1, characterized in that: A magnet (403) is mounted on the motor shaft (401), and the magnet (403) is rotatably connected to the stator assembly (3) through the motor shaft (401).

3. The noise-reducing motor structure according to claim 1, characterized in that: The elastic element (5) is located outside the second positioning ring (404); or the elastic element (5) is located between the first positioning ring (402) and the magnet (403).

4. The noise-reducing motor structure according to claim 1, characterized in that: The elastic element (5) is located between the second positioning ring (404) and the magnet (403).

5. The noise-reducing motor structure according to claim 1, characterized in that: Two elastic elements (5) are provided, one located between the first positioning ring (402) and the magnet (403), and the other located outside the second positioning ring (404).

6. The noise-reducing motor structure according to claim 1, characterized in that: Two elastic elements (5) are provided, one located between the second positioning ring (404) and the magnet (403), and the other located outside the first positioning ring (402).

7. The noise-reducing motor structure according to claim 1, characterized in that: Two elastic elements (5) are provided, one located outside the first positioning ring (402) and the other located outside the second positioning ring (404).

8. The noise-reducing motor structure according to claim 1, characterized in that: A fan blade (1) is installed at one end of the motor shaft (401), and the fan blade (1) is rotatably connected to the inner side of one end of the air duct assembly (2) through the motor shaft (401).

9. The noise-reducing motor structure according to claim 8, characterized in that: The fan blades (1) and the air duct assembly (2) are made of plastic injection molding.

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