Stator and water fetching motor using same

Abstract

The utility model provides a stator. The stator comprises an iron core plastic-coated assembly and a stator seat. The stator seat is provided with a mounting column with a hollow structure; a through hole is formed in the middle of the iron core plastic-coated assembly, a radial positioning part radially positioned with the through hole is arranged on the surface of the mounting column of the stator seat, and an axial positioning part axially positioned with the iron core plastic-coated assembly is further arranged on the surface of the mounting column of the stator seat; the iron core plastic-coated assembly is sleeved with the installation column, and the stator base and the iron core plastic-coated assembly are positioned and installed through the radial positioning part and the axial positioning part. The stator can effectively solve the problem of unstable connection caused by inaccurate positioning of components, thereby improving the structural stability of the stator. The utility model further provides the water fetching motor which is good in installation effect and high in structural stability, so that the working performance of the water fetching motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and more specifically to a stator and a water pumping motor using the same. Background Art

[0002] Mobile air conditioners are easy to install and use, and have obvious cooling effects. They are becoming more and more popular among consumers. An important component of a mobile air conditioner is the water-pumping motor. The function of the water-pumping motor is to use the motor to drive the impeller to break the condensed water produced by the compressor into small water droplets and attach them to the condenser fins, thereby improving the cooling effect.

[0003] The stator in the water pumping motor includes a core plastic-coated assembly, a PCB board and a stator seat, some of which are made of plastic injection molding. At present, during the operation of the water pumping motor, the plastic parts (such as the stator seat, the core frame in the core plastic-coated assembly, etc.) are prone to deformation, or the plastic parts are deformed during the injection molding process, resulting in poor bonding between the stator seat and the core plastic-coated assembly, resulting in inaccurate positioning of the stator seat and the core plastic-coated assembly, which greatly affects the structural stability of the stator and the working performance of the water pumping motor. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art, and to provide a stator and a water pumping motor using the same, which can effectively solve the problem of unstable connection caused by inaccurate positioning of components, thereby improving the structural stability of the stator. The utility model also provides a stator that can reduce the torque pulsation of the water pumping motor. The utility model also provides a water pumping motor with good installation effect and high structural stability, thereby improving the working performance of the water pumping motor.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a stator, characterized in that: it includes an iron core plastic-coated component and a stator seat; the stator seat is provided with a mounting column with a hollow structure; a through hole is provided in the middle of the iron core plastic-coated component, and a radial positioning portion is provided on the surface of the mounting column of the stator seat for radial positioning with the through hole, and an axial positioning portion is also provided on the surface of the mounting column of the stator seat for axial positioning with the iron core plastic-coated component; the iron core plastic-coated component is sleeved with the mounting column, and the stator seat is positioned and installed with the iron core plastic-coated component through the radial positioning portion and the axial positioning portion.

[0006] In the above scheme, the radial positioning part and the axial positioning part of the mounting column of the stator seat of the utility model can position the iron core plastic-coated assembly to achieve positioning installation, so that the stator seat and the iron core plastic-coated assembly have a good bonding effect and accurate positioning, thereby improving the structural stability of the stator and the working performance of the water pumping motor.

[0007] The radial positioning part and the axial positioning part are both convex parts protruding outward from the mounting column, and the radial positioning part and the axial positioning part are alternately distributed on the outer surface of the mounting column. The radial positioning part and the axial positioning part adopt a disconnected structure instead of a continuous structure, which can avoid the problem of low positioning accuracy of the stator seat and the iron core plastic-coated assembly caused by shrinkage deformation during the injection molding process of the plastic part, thereby improving the stability of the stator installation.

[0008] When the stator seat and the iron core plastic-coated component are positioned and installed, the radial positioning portion cooperates with the hole wall of the through hole of the iron core plastic-coated component for radial positioning.

[0009] The height of the axial positioning portion is smaller than the height of the mounting column; when the stator seat and the iron core plastic-coated assembly are positioned and installed, the axial positioning portion cooperates with the end of the iron core plastic-coated assembly for axial positioning.

[0010] The through hole wall of the core plastic-coated component is provided with a groove; the surface of the mounting column of the stator seat is also provided with at least one positioning column for positioning with the rotation direction of the core plastic-coated component; the positioning column is positioned and engaged with the groove. The design of the positioning column can not only be positioned with the rotation direction of the core plastic-coated component, but also can be used as an identification of the installation direction, so as to facilitate the installation of the core plastic-coated component and the stator seat.

[0011] The positioning column is arranged on the radial positioning portion.

[0012] The stator also includes a bearing; the inner wall of the mounting column is provided with a support bar for supporting the bearing; two bearings are respectively provided at the end faces of the support bar. Compared with the support surface of the full-circle structure, the design of the support bar forming the support surface can effectively reduce the matching requirements between the bearing and the support surface, avoid the problem of low positioning accuracy of the stator seat and the bearing caused by shrinkage deformation of the plastic parts during the injection molding process, and further improve the stability of the stator installation.

[0013] The iron core plastic-coated assembly comprises a stator iron core; the stator iron core is composed of a plurality of stator punching sheets; each stator punching sheet is provided with auxiliary teeth for reducing torque pulsation.

[0014] The iron core plastic-coated assembly further comprises an iron core plastic-coated frame and a coil; the iron core plastic-coated frame is installed on both sides of the stator iron core, and the coil is wound on the stator iron core.

[0015] A water pumping motor comprises the above-mentioned stator; the water pumping motor also comprises a rotor and a shaft; the rotor comprises a rotor housing, a motor housing and a magnet; the motor housing is arranged in the inner cavity of the rotor housing, and the magnet is arranged inside the motor housing; one end of the shaft extends into the rotor and is connected to the rotor housing, and the other end passes through the iron core plastic-coated component and the stator seat, so that the rotor is arranged outside the stator in rotation.

[0016] During the rotation of the motor, the instantaneous output torque changes continuously with time, but it fluctuates around a certain average value. This phenomenon is called torque pulsation. If the torque pulsation is large, the stability of dragging the load is low. Simply put, the jitter is large, and it also affects the stability of the speed, and the energy consumption of the motor increases. In addition, the torque pulsation will make the rotation speed of the rotor uneven and produce pulsation. When the water pumping motor is at a low speed, a stepping phenomenon will also occur. Under appropriate conditions, it may cause resonance of the mechanical system composed of the motor and the load, thereby generating vibration and noise. Among them, the torque pulsation caused is divided into torque pulsation caused by phase change and torque pulsation caused by stator teeth. The utility model is provided with auxiliary teeth on the stator punching sheet to reduce the torque pulsation caused by the stator teeth, thereby further increasing the stability of the water pumping motor.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0018] 1. The stator of the utility model can effectively solve the problem of unstable connection caused by inaccurate positioning of components, thereby improving the structural stability of the stator.

[0019] 2. The stator of the utility model can reduce the torque pulsation of the water pumping motor, thereby further increasing the working stability of the water pumping motor.

[0020] 3. The water pumping motor of the utility model has good installation effect and high structural stability, thereby improving the working performance of the water pumping motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an exploded diagram of the stator of the utility model;

[0022] Figure 2 It is an internal schematic diagram of the stator of the utility model;

[0023] Figure 3 It is a schematic diagram of the stator seat of the utility model;

[0024] Figure 4 It is an exploded view of the water pumping motor of the utility model;

[0025] Figure 5 It is a schematic diagram of a stator punching sheet in the stator of the utility model;

[0026] Figure 6 It is a schematic diagram of the stator core in the stator of the utility model;

[0027] Figure 7 It is a schematic diagram of the installation of the stator core and the core plastic-coated frame in the stator of the utility model;

[0028] Among them, 1 is the iron core plastic-coated component, 2 is the stator seat, 3 is the mounting column, 4 is the radial positioning part, 5 is the axial positioning part, 6 is the groove, 7 is the positioning column, 8 is the bearing, 9 is the support bar, 10 is the PCB board, 11 is the shaft body, 12 is the rotor housing, 13 is the motor housing, 14 is the magnet, 15 is the coil, 16 is the auxiliary tooth, 17 is the iron core plastic-coated frame, 18 is the stator core, and 19 is the stator punching sheet. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementations.

[0030] Example

[0031] like Figures 1 to 7 As shown, the stator of the utility model comprises an iron core plastic-coated component 1 and a stator seat 2, wherein the stator seat 2 is provided with a mounting column 3 of a hollow structure, a through hole is provided in the middle of the iron core plastic-coated component 1, a radial positioning portion 4 radially positioned with the through hole is provided on the surface of the mounting column 3 of the stator seat 2, and an axial positioning portion 5 axially positioned with the iron core plastic-coated component 1 is also provided on the surface of the mounting column 3 of the stator seat 2. The iron core plastic-coated component 1 is sleeved with the mounting column 3, and the stator seat 2 is positioned and installed with the iron core plastic-coated component 1 through the radial positioning portion 4 and the axial positioning portion 5.

[0032] Specifically, the radial positioning portion 4 and the axial positioning portion 5 are both convex portions protruding outward from the mounting column 3, and the radial positioning portion 4 and the axial positioning portion 5 are alternately distributed on the outer surface of the mounting column 3. The radial positioning portion 4 and the axial positioning portion 5 adopt a disconnected structure rather than a continuous structure, which can avoid the problem of low positioning accuracy of the stator seat 2 and the iron core overmolding component 1 caused by shrinkage deformation during the injection molding process of the plastic part, thereby improving the stability of the stator installation.

[0033] When the stator seat 2 and the core plastic-coated assembly 1 are positioned and installed, the radial positioning portion 4 cooperates with the hole wall of the through hole of the core plastic-coated assembly 1 for radial positioning. The height of the axial positioning portion 5 is less than the height of the mounting column 3. When the stator seat 2 and the core plastic-coated assembly 1 are positioned and installed, the axial positioning portion 5 cooperates with the end of the core plastic-coated assembly 1 for axial positioning.

[0034] A groove 6 is provided on the through hole wall of the core plastic-coated component 1, and a positioning column 7 for positioning with the rotation direction of the core plastic-coated component 1 is also provided on the surface of the mounting column 3 of the stator seat 2, and the positioning column 7 is positioned and engaged with the groove 6. The positioning column 7 is designed to not only position with the rotation direction of the core plastic-coated component 1, but also serve as a mark of the installation direction, facilitating the installation of the core plastic-coated component 1 and the stator seat 2. The positioning column 7 is arranged on the radial positioning portion 4.

[0035] The stator of the utility model further includes a bearing 8, and the inner wall of the mounting column 3 is provided with a support bar 9 for supporting the bearing 8, and two bearings 8 are respectively provided at the end surfaces of the end of the support bar 9. Compared with the support surface of the full-circle structure, the design of the support bar 9 forming the support surface can effectively reduce the matching requirements between the bearing 8 and the support surface, avoid the problem of low positioning accuracy of the stator seat 2 and the bearing 8 caused by the shrinkage deformation of the plastic parts during the injection molding process, and further improve the stability of the stator installation.

[0036] The stator of the utility model further comprises a PCB board 10 , which is sleeved with the mounting column 3 and is located between the iron core plastic-coated component 1 and the stator seat 2 .

[0037] The radial positioning part 4 and the axial positioning part 5 of the mounting column 3 of the stator seat 2 of the utility model can position the iron core plastic-coated component 1 to achieve positioning installation, so that the stator seat 2 and the iron core plastic-coated component 1 have a good bonding effect and accurate positioning, thereby improving the structural stability of the stator and the working performance of the water pumping motor.

[0038] The core plastic-coated assembly 1 of this embodiment includes a stator core 18, which is composed of a plurality of stator punching sheets 19, each of which is provided with an auxiliary tooth 16 for reducing torque pulsation. The core plastic-coated assembly 1 also includes a core plastic-coated frame 17 and a coil 15, wherein the core plastic-coated frame 17 is installed on both sides of the stator core 18, and the coil 15 is wound on the stator core 18.

[0039] The water pumping motor of this embodiment includes the above-mentioned stator, and also includes a rotor and a shaft 11, wherein the rotor includes a rotor housing 12, a motor housing 13 and a magnet 14, the motor housing 13 is arranged in the inner cavity of the rotor housing 12, and the magnet 14 is arranged inside the motor housing 13, one end of the shaft 11 extends into the rotor and is connected to the rotor housing 12, and the other end passes through the iron core plastic-coated component 1 and the stator seat 2, so that the rotor is arranged on the outside of the stator.

[0040] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A stator, characterized in that: It includes an iron core plastic-coated component and a stator seat; the stator seat is provided with a mounting column with a hollow structure; a through hole is provided in the middle of the iron core plastic-coated component, a radial positioning portion is provided on the surface of the mounting column of the stator seat for radial positioning with the through hole, and an axial positioning portion is also provided on the surface of the mounting column of the stator seat for axial positioning with the iron core plastic-coated component; the iron core plastic-coated component is sleeved with the mounting column, and the stator seat is positioned and installed with the iron core plastic-coated component through the radial positioning portion and the axial positioning portion.

2. The stator according to claim 1, characterized in that: The radial positioning portion and the axial positioning portion are both convex portions of the mounting column protruding outward, and the radial positioning portion and the axial positioning portion are alternately distributed on the outer surface of the mounting column.

3. The stator according to claim 2, characterized in that: When the stator seat and the iron core plastic-coated component are positioned and installed, the radial positioning portion cooperates with the hole wall of the through hole of the iron core plastic-coated component for radial positioning.

4. The stator according to claim 2, characterized in that: The height of the axial positioning portion is smaller than the height of the mounting column; when the stator seat and the iron core plastic-coated assembly are positioned and installed, the axial positioning portion cooperates with the end of the iron core plastic-coated assembly for axial positioning.

5. The stator according to claim 1, characterized in that: The through hole wall of the iron core plastic-coated component is provided with a groove; the surface of the mounting column of the stator seat is also provided with at least one positioning column which is positioned with respect to the rotation direction of the iron core plastic-coated component; the positioning column is positioned and engaged with the groove.

6. The stator according to claim 5, characterized in that: The positioning column is arranged on the radial positioning portion.

7. The stator according to claim 1, characterized in that: The stator also includes a bearing; the inner wall of the mounting column is provided with a support bar for supporting the bearing; and two bearings are respectively arranged on the end faces of the end of the support bar.

8. The stator according to claim 1, characterized in that: The iron core plastic-coated assembly comprises a stator iron core; the stator iron core is composed of a plurality of stator punching sheets; each stator punching sheet is provided with auxiliary teeth for reducing torque pulsation.

9. The stator according to claim 8, characterized in that: The iron core plastic-coated assembly further comprises an iron core plastic-coated frame and a coil; the iron core plastic-coated frame is installed on both sides of the stator iron core, and the coil is wound on the stator iron core.

10. A water pumping motor, characterized in that: It comprises a stator as claimed in any one of claims 1 to 9; the water pumping motor also comprises a rotor and a shaft; the rotor comprises a rotor housing, a motor housing and a magnet; the motor housing is arranged in the inner cavity of the rotor housing, and the magnet is arranged inside the motor housing; one end of the shaft extends into the rotor and is connected to the rotor housing, and the other end passes through the iron core plastic-coated component and the stator seat, so that the rotor is rotatably arranged on the outside of the stator.

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