A noise reduction motor applied to small household appliances
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUHAI NUOKAI MOTOR CO LTD
- Filing Date
- 2025-09-11
- Publication Date
- 2026-08-07
AI Technical Summary
[0002]在现代生活中，小家电已成为人们日常起居、饮食制作等场景不可或缺的设备，特别是破壁机，由于破壁机内置的电机转速较高、功率较大，普遍采用H88、H80系列电机，由前支架作为与破壁机的连接结构，后支架则用于将定子和转子固定到前支架上，再通过风叶来进行散热，由于风叶是安装到主轴上的，且位于后支架的外侧，其工作原理是将定子和转子工作过程中产生的热量抽取并排出，但由于后支架的存在，将会对空气的流动造成阻碍，气流紊乱则会造成较大的风噪，同时也影响散热性能；因此，急需一种应用于小家电的降噪电机来解决上述问题
[0012]本实用新型的有益效果：一种应用于小家电的降噪电机，包括前支架、定子组件、后支架、转子组件、主轴以及风叶；前支架用于安装至小家电上；定子组件设置在前支架上；后支架与定子组件和前支架连接，后支架上设置有第一通风槽和第二通风槽；转子组件设置在定子组件内；主轴穿设于转子组件上且一端与前支架转动连接、另一端与后支架转动连接，第一通风槽和第二通风槽分列于主轴的两侧；风叶与主轴的另一端连接且位于后支架的外侧；通过在后支架上开设第一通风槽与第二通风槽，形成对称且顺畅的通风路径，大大降低了空气与后支架碰撞而发生气流紊乱所产生的风噪，也有利于进一步提升散热性能，满足使用需求。
Smart Images
Figure CN224610601U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motors, and in particular to a noise-reducing motor for use in small household appliances. Background Technology
[0002] In modern life, small household appliances have become indispensable equipment in people's daily lives, such as food preparation. Blenders, in particular, are often equipped with high-speed, high-power motors, typically H88 or H80 series motors. A front bracket serves as the connection structure to the blender, while a rear bracket secures the stator and rotor to it. Heat dissipation is achieved through fan blades. Since the fan blades are mounted on the main shaft and located outside the rear bracket, their working principle is to extract and expel the heat generated by the stator and rotor during operation. However, the presence of the rear bracket obstructs airflow, causing turbulent airflow and resulting in significant wind noise, which also affects heat dissipation performance. Therefore, there is an urgent need for a noise-reducing motor for small household appliances to solve these problems. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a noise-reducing motor for use in small household appliances.
[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a noise-reducing motor for small household appliances, including a front bracket, a stator assembly, a rear bracket, a rotor assembly, a main shaft, and a fan blade; The front bracket is used for mounting to small household appliances; The stator assembly is mounted on the front bracket; The rear bracket is connected to the stator assembly and the front bracket, and the rear bracket is provided with a first ventilation slot and a second ventilation slot. The rotor assembly is housed within the stator assembly; The main shaft passes through the rotor assembly and is rotatably connected at one end to the front support and at the other end to the rear support. The first ventilation slot and the second ventilation slot are located on both sides of the main shaft. The fan blade is connected to the other end of the main shaft and is located on the outside of the rear support.
[0005] As one of the preferred embodiments of this utility model, a first rotating groove is provided on the front bracket and a second rotating groove is provided on the rear bracket. The first ventilation groove and the second ventilation groove are arranged on both sides of the first rotating groove. One end of the main shaft is rotatably disposed in the first rotating groove through a first bearing, and the other end of the main shaft is rotatably disposed in the second rotating groove through a second bearing.
[0006] As one of the preferred embodiments of this utility model, the rear bracket is inverted U-shaped and the two sides of the open end are respectively provided with a first support plate and a second support plate that abut against the upper surface of the stator assembly. The first support plate and the second support plate are provided with a first positioning slot. The front bracket has second positioning slots on both sides; Positioning slots are provided on both sides of the stator assembly. The upper end of the positioning slot extends into the first positioning slot and the lower end extends into the second positioning slot.
[0007] As one of the preferred embodiments of this utility model, a first threaded hole is formed between the front bracket, the stator assembly and the first support plate, and a second threaded hole is formed between the front bracket, the stator assembly and the second support plate. It also includes a first bolt threaded into the first threaded hole and a second bolt threaded into the second threaded hole.
[0008] As one of the preferred embodiments of this utility model, the first ventilation slot and the second ventilation slot extend along the length and width of the rear support.
[0009] As one of the preferred embodiments of this utility model, elastic gaskets are provided between the stator assembly and the front support, and between the stator assembly and the rear support.
[0010] In one of the preferred embodiments of this utility model, the elastic gasket is configured as a rubber gasket.
[0011] As one of the preferred embodiments of this utility model, the front bracket and / or rear bracket are made of plastic.
[0012] The beneficial effects of this utility model are as follows: A noise-reducing motor for small household appliances includes a front bracket, a stator assembly, a rear bracket, a rotor assembly, a main shaft, and a fan blade. The front bracket is used to install onto the small household appliance. The stator assembly is mounted on the front bracket. The rear bracket is connected to the stator assembly and the front bracket, and a first ventilation slot and a second ventilation slot are provided on the rear bracket. The rotor assembly is located inside the stator assembly. The main shaft passes through the rotor assembly and is rotatably connected at one end to the front bracket and at the other end to the rear bracket. The first ventilation slot and the second ventilation slot are located on both sides of the main shaft. The fan blade is connected to the other end of the main shaft and is located on the outside of the rear bracket. By opening the first ventilation slot and the second ventilation slot on the rear bracket, a symmetrical and smooth ventilation path is formed, which greatly reduces the wind noise caused by airflow turbulence due to air collision with the rear bracket, and also helps to further improve heat dissipation performance and meet usage requirements. Attached Figure Description
[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a noise-reducing motor used in small household appliances; Figure 2 An exploded view of a noise-reducing motor used in small household appliances; Figure 3 This is a cross-sectional view of a noise-reducing motor used in small household appliances. Detailed Implementation
[0014] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0015] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.
[0016] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0017] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0018] Reference Figures 1-3 A noise-reducing motor for use in small household appliances includes a front bracket 10, a stator assembly 20, a rear bracket 30, a rotor assembly 40, a main shaft 50, and a fan blade 60. The front bracket 10 is used for mounting to small household appliances; Stator assembly 20 is mounted on front bracket 10; The rear bracket 30 is connected to the stator assembly 20 and the front bracket 10. The rear bracket 30 is provided with a first ventilation slot 71 and a second ventilation slot 72. Rotor assembly 40 is disposed within stator assembly 20; The main shaft 50 is mounted on the rotor assembly 40, with one end rotatably connected to the front support 10 and the other end rotatably connected to the rear support 30. The first ventilation slot 71 and the second ventilation slot 72 are located on both sides of the main shaft 50. The fan blade 60 is connected to the other end of the main shaft 50 and is located on the outside of the rear bracket 30.
[0019] In this utility model, during assembly, the assembled stator assembly 20 is placed on the front bracket 10, and then the rotor assembly 40 with the main shaft 50 is inserted into the stator assembly 20. Next, the rear bracket 30 is placed on the upper end of the rotor assembly 40, with the upper end of the main shaft 50 passing through the rear bracket 30 and the lower end passing through the front bracket 10. (Refer to...) Figures 2-3 In some embodiments, the front bracket 10 is provided with a first rotating groove 73, and the rear bracket 30 is provided with a second rotating groove 74. A first ventilation groove 71 and a second ventilation groove 72 are located on opposite sides of the first rotating groove 11. One end of the main shaft 50 is rotatably mounted in the first rotating groove 73 via a first bearing 75, and the other end of the main shaft 50 is rotatably mounted in the second rotating groove 74 via a second bearing 76. That is, the upper end of the main shaft 50 is connected to the inner ring of the second bearing 76, and the lower end is connected to the inner ring of the first bearing 75. The outer ring of the first bearing 75 is fixed to the inner wall of the first rotating groove 73, and the outer ring of the second bearing 76 is fixed to the inner wall of the second rotating groove 74. Finally, bolts are used to assemble the front bracket 10, the stator assembly 20, and the rear bracket 30 into a single unit, and the fan blade 60 is mounted on the portion of the main shaft 50 located outside the rear bracket 30. (Refer to...) Figures 1-3 In some embodiments, a commutator 92 is provided on the spindle 50, and a brush box 91 is provided on each side of the rear bracket 30, with the brush box 91 connected to an external controller.
[0020] The stator assembly 20's leads are connected to an external controller. When the stator assembly 20 generates an alternating magnetic field, it will drive the rotor assembly 40 to rotate clockwise or counterclockwise, ultimately driving the main shaft 50 and the fan blade 60 to rotate. It should be noted that during the rotation of the fan blade 60, the heat generated inside the motor (stator assembly 20 and drive rotor assembly 40) during operation will be extracted and discharged to the periphery. Specifically, the air and heat inside the motor enter the interior of the fan blade 60 through both sides of the rear bracket 30, the first ventilation slot 71, and the second ventilation slot 72, and then are discharged from the periphery of the fan blade 60. Preferably, the rear bracket 30 is inverted U-shaped, and the second rotation slot 74, the first ventilation slot 71, and the second ventilation slot 72 are located on the horizontal section of the inverted U-shaped rear bracket 30. Because the horizontal section of the rear bracket 30 is slotted to the maximum extent, the smoothness of airflow between the motor and the fan blade 60 can be improved, reducing airflow turbulence, thereby reducing wind noise and improving the quietness effect.
[0021] Reference Figures 1-3In some embodiments, the rear bracket 30 is inverted U-shaped, and a first support plate 31 and a second support plate 32 are respectively provided on both sides of the open end, which abut against the upper surface of the stator assembly 20. The first support plate 31 and the second support plate 32 are provided with a first positioning groove 33. The front bracket 10 is provided with a second positioning groove 34 on both sides. The stator assembly 20 is provided with a positioning platform 35 on both sides, the upper end of the positioning platform 35 extending into the first positioning groove 33 and the lower end extending into the second positioning groove 34. In a further embodiment, a first threaded hole 81 is formed between the front bracket 10, the stator assembly 20 and the first support plate 31, and a second threaded hole 82 is formed between the front bracket 10, the stator assembly 20 and the second support plate 32. It also includes a first bolt 83 threaded into the first threaded hole 81 and a second bolt 84 threaded into the second threaded hole 82.
[0022] Specifically, during assembly, the lower end of the positioning plate 35 on the stator assembly 20 is engaged in the second positioning slot 34 on the front bracket 10, which serves to pre-position the stator assembly 20 and facilitate the assembly of the rear bracket 30. Furthermore, the first support plate 31 and the second support plate 32 are pressed against the upper end face of the stator assembly 20, so that the upper end of the positioning plate 35 on the stator assembly 20 is engaged in the first positioning slot 33 on the first support plate 31 and the second support plate 32, which serves to pre-position the rear bracket 30. Then, the first bolt 83 is threaded into the first threaded hole 81 and the second bolt 84 is threaded into the second threaded hole 82, thereby assembling the front bracket 10, the stator assembly 20, the rear bracket 30 and the rotor assembly 40 into one unit.
[0023] Reference Figures 1-3 In some embodiments, the first ventilation slot 71 and the second ventilation slot 72 extend along the length and width of the rear bracket 30. This arrangement can maximize the area of the first ventilation slot 71 and the second ventilation slot 72 and minimize the obstruction of airflow, thereby improving the noise reduction effect.
[0024] Reference Figures 1-3 In some embodiments, elastic pads 90 are provided between the stator assembly 20 and the front support 10 and between the stator assembly 20 and the rear support 30. Preferably, the elastic pads 90 are rubber pads, which can absorb friction noise caused by small displacement between the stator assembly 20 and the front support 10 and between the stator assembly 20 and the rear support 30, and can also absorb vibration, further improving the noise reduction effect.
[0025] Reference Figures 1-3 In some embodiments, the front support 10 and / or the rear support 30 are made of plastic, which reduces production costs.
[0026] The advantages of this utility model are: by opening the first ventilation slot and the second ventilation slot on the rear bracket, a symmetrical and smooth ventilation path is formed, which greatly reduces the wind noise caused by airflow turbulence due to the collision of air and the rear bracket, and also helps to further improve heat dissipation performance and meet the usage requirements.
[0027] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.
Claims
1. A noise-reducing motor for use in small household appliances, characterized in that: It includes a front support (10), a stator assembly (20), a rear support (30), a rotor assembly (40), a main shaft (50), and a fan blade (60); The front bracket (10) is used for mounting onto small household appliances; The stator assembly (20) is mounted on the front bracket (10); The rear bracket (30) is connected to the stator assembly (20) and the front bracket (10), and the rear bracket (30) is provided with a first ventilation slot (71) and a second ventilation slot (72). The rotor assembly (40) is disposed within the stator assembly (20); The main shaft (50) passes through the rotor assembly (40) and is rotatably connected at one end to the front support (10) and at the other end to the rear support (30). The first ventilation slot (71) and the second ventilation slot (72) are located on both sides of the main shaft (50). The fan blade (60) is connected to the other end of the main shaft (50) and is located on the outside of the rear support (30).
2. The noise-reducing motor for small household appliances according to claim 1, characterized in that: The front bracket (10) is provided with a first rotating groove (73), and the rear bracket (30) is provided with a second rotating groove (74). The first ventilation groove (71) and the second ventilation groove (72) are arranged on both sides of the first rotating groove (73). One end of the main shaft (50) is rotatably disposed in the first rotating groove (73) through the first bearing (75), and the other end of the main shaft (50) is rotatably disposed in the second rotating groove (74) through the second bearing (76).
3. The noise-reducing motor for small household appliances according to claim 1, characterized in that: The rear bracket (30) is inverted U-shaped and has a first support plate (31) and a second support plate (32) on both sides of the open end, which abut against the upper surface of the stator assembly (20). The first support plate (31) and the second support plate (32) are provided with a first positioning slot (33). The front bracket (10) is provided with second positioning slots (34) on both sides. The stator assembly (20) is provided with positioning plates (35) on both sides. The upper end of the positioning plate (35) extends into the first positioning slot (33) and the lower end extends into the second positioning slot (34).
4. A noise-reducing motor for small household appliances according to claim 3, characterized in that: A first threaded hole (81) is formed between the front bracket (10), the stator assembly (20) and the first support plate (31), and a second threaded hole (82) is formed between the front bracket (10), the stator assembly (20) and the second support plate (32). The device also includes a first bolt (83) threaded into the first threaded hole (81) and a second bolt (84) threaded into the second threaded hole (82).
5. A noise-reducing motor for small household appliances according to claim 1, characterized in that: The first ventilation slot (71) and the second ventilation slot (72) extend along the length and width of the rear support (30).
6. A noise-reducing motor for small household appliances according to claim 1, characterized in that: Elastic gaskets (90) are provided between the stator assembly (20) and the front support (10) and between the stator assembly (20) and the rear support (30).
7. A noise-reducing motor for small household appliances according to claim 6, characterized in that: The elastic pad (90) is configured as a rubber pad.
8. A noise-reducing motor for small household appliances according to claim 1, characterized in that: The front support (10) and / or the rear support (30) are made of plastic.