Electronic water pump stator assembly mounting structure

Abstract

This invention discloses an installation structure for an electronic water pump stator assembly, relating to the field of electronic water pump stator assembly installation technology. It includes an electronic water pump housing, in which multiple limiting components and positioning columns are injection molded during injection molding. These limiting components match pre-reserved installation gaps (one on the stator assembly and another within the lower frame), allowing the stator assembly and lower frame to be completely installed into the electronic water pump housing. The limiting components serve to facilitate quick insertion and positioning. This invention utilizes four positioning columns pre-reserved during the injection molding of the electronic water pump housing to facilitate quick positioning and installation with the stator assembly and lower frame, saving assembly and disassembly time. Furthermore, multiple strip-shaped limiting components at the bottom of the electronic water pump housing also assist in the rapid installation of the wound stator assembly and lower frame, improving the efficiency of installing the entire motor assembly and making the adaptation between components faster and more precise.

Description

Technical Field

[0001] This invention relates to the field of electronic water pump stator assembly installation technology, specifically to an electronic water pump stator assembly installation structure. Background Technology

[0002] The electric water pump is a core component of the automotive thermal management system. It relies on the independent cooling drive of a brushless DC motor to circulate the coolant. Its speed is not limited by the engine speed. It is widely used for heat dissipation and cooling of batteries and electronic control systems in hybrid vehicles. A conventional electric water pump consists of a housing, impeller, DC motor (stator + rotor), frame, sealing components, etc. The installation of each component takes a long time and requires precise alignment of the mounting holes or mounting positions of each part to ensure accurate assembly.

[0003] Currently, the installation of various components in electronic water pumps relies on technologies such as high temperature or hot melt adhesive and bolts. However, methods such as high temperature or hot melt adhesive require a long waiting time, and bolt fixing is cumbersome, thus prolonging the installation time. For example, an electronic water pump for vehicles disclosed in application publication number CN109185178A includes a plastic-encapsulated housing, a plastic-encapsulated stator and rotor shaft installed in the plastic-encapsulated housing, an impeller rotor matched with the rotor shaft, a control board installed on the rear side of the plastic-encapsulated housing, a front cover and a rear cover installed on the plastic-encapsulated housing, and a sealing ring located between the rear cover and the plastic-encapsulated housing. The plastic-encapsulated housing is fitted with a snap-on shock-absorbing rubber ring. The impeller rotor includes an impeller and a rotor assembly; the impeller includes a wheel disc, several arc-shaped blades, and an impeller front cover; the rotor assembly includes a hollow rotating shaft, a first baffle and a second baffle, a limiting post, a rotor plastic-encapsulated housing, a rotor core, and a magnetic tile. This application can effectively prevent magnetic leakage inside the impeller rotor, balance the pressure difference at both ends of the impeller during operation, avoid axial movement of the rotor, and remove impurities or particles from the conveyed liquid. In addition, it has strong anti-vibration performance and greatly improves the working performance of the electronic water pump. In this solution, the installation and fixing between the plastic encapsulation shell and various components are mostly secured by bolts, which requires precise alignment before installation. This operation is cumbersome and time-consuming. If a limiting mechanism can be reserved during the injection molding of the shell to align and adapt to the mounting holes, and the shell can be directly connected to the holes and then hot-riveted, the production cycle can be greatly improved and the installation time can be saved. Summary of the Invention

[0004] The purpose of this invention is to provide an electronic water pump stator assembly mounting structure to solve the problem mentioned in the background art that the mounting of the various components of the electronic water pump housing relies on equipment such as hot melt adhesive or high-temperature ovens for curing, which results in a long waiting time.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An electronic water pump stator assembly mounting structure includes an electronic water pump housing. During injection molding, the electronic water pump housing is injection molded with multiple limiting components, positioning columns, and alignment components. The multiple limiting components can match a reserved installation gap one opened on the stator assembly and a reserved installation gap two opened in the lower frame. The stator assembly and the lower frame can be completely installed into the electronic water pump housing. The multiple limiting components play a role in quick insertion and limiting during installation of the stator assembly.

[0006] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention facilitates quick and easy installation of the stator assembly and lower frame by pre-reserving four positioning columns during the injection molding of the electronic water pump housing, saving disassembly and assembly time. In addition, multiple strip-shaped limiting parts at the bottom of the electronic water pump housing can also assist in the quick installation of the wound stator assembly and lower frame, improving the efficiency of installing the entire motor assembly and making the adaptation between the various components faster and more accurate.

[0007] 2. After the four positioning columns are fitted and installed with the reserved mounting holes on the lower frame, hot riveting welding is performed at the positioning column positions. Compared with the traditional hot melt glue fixing which requires a long waiting time, and the use of high temperature ovens and other equipment, it saves more time, reduces equipment investment, and improves product cycle time. Attached Figure Description

[0008] Figure 1 This is an exploded three-dimensional view of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the stator assembly of the present invention; Figure 3 This is a side view of the housing of the electronic water pump of the present invention; Figure 4 This is a three-dimensional structural diagram of the limiting component of the present invention; Figure 5 This is a top view of the lower skeleton of the present invention.

[0009] In the diagram: 1. Electric water pump housing; 101. Limiting component; 102. Positioning column; 103. Alignment component; 2. Stator assembly; 201. Reserved installation gap one; 202. Alignment groove; 203. Lower frame; 204. Reserved installation hole; 205. Reserved installation gap two. Detailed Implementation

[0010] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0011] like Figures 1-5 As shown, the present invention provides an electronic water pump stator assembly mounting structure, including an electronic water pump housing 1. During injection molding, the electronic water pump housing 1 is injection molded with multiple limiting members 101, positioning columns 102, and alignment members 103. The multiple limiting members 101 can match the reserved installation gap 201 opened on the stator assembly 2 and the reserved installation gap 205 opened in the lower frame 203. The stator assembly 2 and the lower frame 203 can be completely installed into the electronic water pump housing 1. When the multiple limiting members 101 are installed with the stator assembly 2, they play a role in quick insertion and limiting. When the stator assembly 2 is installed into the stator assembly 2, it can only rotate 60° at a time under the limiting effect of the multiple limiting members 101.

[0012] The number of limiting components 101, reserved installation gap one 201, and reserved installation gap two 205 are equal, which facilitates the smooth installation of the stator assembly 2 and the lower frame 203 into the electric water pump housing 1. First, the lower frame 203 is installed into the stator assembly 2. After the winding is completed, the stator assembly 2 is rotated into the electric water pump housing 1. The limiting components 101 are distributed in a circular array around the center of the electric water pump housing 1, and the number of limiting components 101 is greater than that of the positioning columns 102. When the stator assembly 2 is installed into the stator assembly 2, it can only rotate 90° at a time under the restriction of multiple positioning columns 102.

[0013] The positioning column 102 can be adapted to the reserved mounting hole 204 opened on the lower frame 203. After the positioning column 102 passes through the reserved mounting hole 204, the entire electronic water pump housing 1, stator assembly 2 and lower frame 203 are fixed by hot riveting and welding. Compared with the drying waiting time after hot melt glue fixation, it is shorter and also reduces the investment in high temperature ovens and other equipment.

[0014] Four positioning columns 102 are provided, arranged in a circular array about the center of the electronic water pump housing 1, ensuring that the spacing between the four positioning columns 102 is equal and that they can be installed after being aligned with the positioning columns 102. The top of the positioning column 102 is flush with the edge of the opening of the electronic water pump housing 1, and the end of the positioning column 102 is located at half the height of the electronic water pump housing 1. After the stator assembly 2 is aligned with the four positioning columns 102 and installed, it rotates 90° in one rotation.

[0015] Both the inner and outer sides of the stator assembly 2 are wound with wire to ensure stable current and voltage transmission of the motor. The stator assembly 2 is provided with an alignment groove 202. The alignment groove 202 is used to engage with the alignment part 103 when the lower frame 203 is installed into the stator assembly 2. For example, after the reserved installation gap 205 on the lower frame 203 is aligned with the reserved installation gap 201 and installed into the stator assembly 2, the stator assembly 2 can still rotate within the electric water pump housing 1. Each rotation is 60°. When it is rotated to the position where the alignment groove 202 and the alignment part 103 just engage, it is fixed and cannot be rotated further, effectively preventing incorrect installation.

[0016] Working principle: First, the lower frame 203 is installed into the stator assembly 2 and wound to form a complete stator assembly 2. After the positions of the multiple reserved mounting holes 204 and the reserved mounting gap 201 are aligned, it can be quickly installed. Then, the inner and outer windings of the stator assembly 2 are wound. Finally, the complete stator assembly 2 is installed into the electric water pump housing 1. The positions of multiple reserved installation gaps 1 201 and 2 205 are aligned with multiple limiting parts 101. After alignment, the angle can still be rotated (60° each time, but it cannot be rotated when the alignment groove 202 engages with the alignment part 103). After the multiple reserved installation holes 204 are aligned with the positions of the positioning column 102 and installed, hot riveting welding is performed at the positioning column 102, which greatly saves installation time.

[0017] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An electronic water pump stator assembly mounting structure, comprising an electronic water pump housing (1), characterized in that: The electronic water pump housing (1) is injection molded with multiple limiting parts (101), positioning columns (102) and alignment parts (103). The multiple limiting parts (101) can match the reserved installation gap one (201) opened on the stator assembly (2) and the reserved installation gap two (205) opened in the lower frame (203). The stator assembly (2) and the lower frame (203) can be completely installed into the electronic water pump housing (1). The multiple limiting parts (101) play a role in quick insertion and limiting when installing the stator assembly (2).

2. The electronic water pump stator assembly mounting structure according to claim 1, characterized in that: The number of the limiting component (101), the reserved installation gap one (201), and the reserved installation gap two (205) are equal, and the included angle between the multiple limiting components (101) is 60°.

3. The electronic water pump stator assembly mounting structure according to claim 2, characterized in that: The limiting components (101) are arranged in a circular array around the center of the electronic water pump housing (1), and the number of limiting components (101) is greater than that of the positioning columns (102).

4. The electronic water pump stator assembly mounting structure according to claim 2, characterized in that: The positioning column (102) can be adapted to the reserved mounting hole (204) opened on the lower frame (203) and fixed by the positioning column (102) passing through the reserved mounting hole (204).

5. The electronic water pump stator assembly mounting structure according to claim 4, characterized in that: Four positioning columns (102) are provided, and the four positioning columns (102) are arranged in a circular array about the center of the electronic water pump housing (1).

6. The electronic water pump stator assembly mounting structure according to claim 5, characterized in that: The top of the positioning column (102) is flush with the edge of the opening of the electronic water pump housing (1), and the end of the positioning column (102) is located at half the height of the electronic water pump housing (1).

7. The electronic water pump stator assembly mounting structure according to claim 1, characterized in that: The stator assembly (2) is wound with wire both inside and outside. An alignment groove (202) is provided on the outside of the stator assembly (2). The alignment groove (202) is used to engage with the alignment piece (103) when the lower frame (203) is installed into the stator assembly (2).

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