A split impeller rotor assembly

Abstract

The utility model relates to electronic water pump technical field, concretely relates to a split type's impeller rotor subassembly, between impeller and motor rotor both, one is equipped with welding rib, the other is equipped with the welding groove that cooperates with welding rib, welding rib is placed in welding groove, impeller and motor rotor are connected together through ultrasonic welding. The utility model makes that impeller and motor rotor can carry out the group according to actual demand and working condition, when having same motor platform, different performance demand's electronic water pump, only need to redevelop different impeller, and the motor rotor of same motor platform is welded into shape with the redeveloped impeller, can satisfy the demand, like this not only reduces manufacturing cost, also improved development cycle.

Description

Technical Field

[0001] This utility model relates to the field of electronic water pump technology, specifically to a split impeller rotor assembly. Background Technology

[0002] With the rapid development of the automotive industry, and as vehicle performance moves towards greater safety, reliability, stability, full automation, intelligence, and environmental protection and energy conservation, electronic water pumps are widely used in automotive cooling systems and can well meet market demands.

[0003] In electric water pumps, the impeller rotor is one of the most important components affecting its performance, and it is generally manufactured as a single piece using injection molding. Because the impeller rotor is typically manufactured as a single piece, when electric water pumps with the same motor platform but different performance requirements need to be re-injected and molded, this leads to longer development cycles, higher costs, and delays in project progress.

[0004] In summary, there is an urgent need for a split-type impeller rotor assembly to solve the problems existing in the current technology. Utility Model Content

[0005] The purpose of this utility model is to provide a split-type impeller rotor assembly, which aims to overcome the shortcomings of the existing technology where the impeller rotor is manufactured by one-piece injection molding. The specific technical solution is as follows:

[0006] A split impeller rotor assembly has a welding rib on one side and a welding groove on the other side that mates with the welding rib. The welding rib is placed in the welding groove. The impeller and the motor rotor are connected together by ultrasonic welding.

[0007] Preferably, between the impeller and the motor rotor, one is provided with a positioning post and the other is provided with a positioning hole that mates with the positioning post, and the positioning post can be inserted into the positioning hole.

[0008] Preferably, the height of the weld bead is greater than the depth of the weld groove.

[0009] Preferably, the cross-section of the welded rib is triangular, and the cross-section of the welded groove is quadrilateral.

[0010] Preferably, both the impeller and the motor rotor are provided with shaft holes, and the shaft holes on the impeller and the motor rotor are coaxially arranged.

[0011] Preferably, a graphite bearing is provided in the shaft hole on the impeller and / or the shaft hole on the motor rotor.

[0012] Preferably, the impeller includes an upper impeller cover, a lower impeller cover, a lower blade, and an upper blade. The lower blade and the upper blade are alternately arranged in the circumferential direction. The upper impeller cover and the upper blade are integrally injection molded, and the lower impeller cover and the lower blade are integrally injection molded. The upper blade and the lower impeller cover, as well as the lower blade and the upper impeller cover, are connected by welding.

[0013] Preferably, the upper blade and the lower impeller cover, as well as the lower blade and the upper impeller cover, are positioned and welded together by welding grooves and welding bosses.

[0014] Preferably, the motor rotor includes a housing and a core assembly, the core assembly being disposed within the housing; between the impeller lower cover and the housing, one is provided with a welding rib, and the other is provided with a welding groove that mates with the welding rib.

[0015] The application of the technical solution of this utility model has the following beneficial effects:

[0016] This invention achieves the welding of a complete impeller-rotor assembly between the impeller and the motor rotor by providing a welding rib on one side and a welding groove on the other side to cooperate with the welding rib. This allows the impeller and motor rotor to be assembled according to actual needs and operating conditions. When there are electric water pumps with the same motor platform but different performance requirements, it is only necessary to redevelop different impellers and weld the redeveloped impellers to the motor rotor of the same motor platform to meet the requirements. This not only reduces manufacturing costs but also improves the development cycle.

[0017] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the impeller rotor assembly of this utility model;

[0020] Figure 2 yes Figure 1 Cross-sectional view of the intermediate impeller rotor assembly;

[0021] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0022] Figure 4 yes Figure 1Schematic diagram of the structure of the middle impeller lower cover and lower blades;

[0023] Figure 5 yes Figure 1 Schematic diagram of the structure of the middle impeller cover and upper blades;

[0024] Figure 6 yes Figure 1 Schematic diagram of the middle impeller;

[0025] Figure 7 yes Figure 1 A schematic diagram of the rotor structure of the electric motor;

[0026] Among them, 1. Impeller, 2. Motor rotor, 11. Impeller upper cover, 12. Impeller lower cover, 13. Graphite bearing, 14. Welding rib, 15. Positioning column, 16. Lower blade, 17. Welding groove, 18. Welding boss, 19. Upper blade, 21. Outer shell, 22. Iron core assembly, 23. Positioning hole, 24. Welding groove. Detailed Implementation

[0027] To facilitate understanding of this invention, a more comprehensive description is provided below, along with preferred embodiments. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] Example:

[0030] like Figures 1-7 As shown, this embodiment provides a split impeller rotor assembly. Between the impeller 1 and the motor rotor 2, one is provided with a welding rib 14, and the other is provided with a welding groove 24 that cooperates with the welding rib 14. The welding rib 14 is placed in the welding groove 24, and the impeller 1 and the motor rotor 2 are connected together by ultrasonic welding.

[0031] Furthermore, between the impeller 1 and the motor rotor 2, one is provided with a positioning post 15, and the other is provided with a positioning hole 23 that cooperates with the positioning post 15. The positioning post 15 can be inserted into the positioning hole 23 to achieve positioning between the impeller 1 and the motor rotor 2 before welding.

[0032] In this embodiment, welding ribs 14 and positioning posts 15 are provided on the impeller 1, and welding grooves 24 and positioning holes 23 are provided on the motor rotor 2. This enables positioning of the impeller 1 and the motor rotor 2 and ultrasonic welding, achieving the purpose of connecting the impeller 1 and the motor rotor 2 into a whole. Of course, in some embodiments, welding ribs 14, positioning posts 15, welding grooves 24 and positioning holes 23 may be set in other ways. For example, welding ribs and positioning posts are set on the motor rotor, and welding grooves and positioning holes are set on the impeller. Those skilled in the art can flexibly adjust the arrangement of welding ribs, positioning posts, welding grooves and positioning holes on the impeller and motor rotor.

[0033] Furthermore, such as Figure 3 As shown, the height of the welding rib 14 is greater than the depth of the welding groove 24 to ensure that the welding rib 14 can fill the welding groove 24 after melting to form an integral structure, thereby achieving a tight connection between the impeller 1 and the motor rotor 2. Preferably, in this embodiment, the cross-section of the welding rib 14 is triangular, and the cross-section of the welding groove 24 is quadrilateral, so that the welding rib can be smoothly inserted into the welding groove and that the welded rib, after melting, can form an integral structure with the entire welding groove 24.

[0034] like Figure 2 As shown, both the impeller 1 and the motor rotor 2 are provided with shaft holes, and the shaft hole on the impeller 1 and the shaft hole on the motor rotor 2 are coaxially arranged. Furthermore, a graphite bearing 13 is provided in the shaft hole on the impeller 1 and / or the shaft hole on the motor rotor 2, thereby enabling the impeller rotor assembly to be sleeved on the shaft and to rotate around the shaft.

[0035] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the impeller 1 includes an upper impeller cover 11, a lower impeller cover 12, a lower blade 16, and an upper blade 19. The lower blade 16 and the upper blade 19 are alternately arranged in the circumferential direction. The upper impeller cover 11 and the upper blade 19 are integrally injection molded, and the lower impeller cover 12 and the lower blade 16 are integrally injection molded. The upper blade 19 and the lower impeller cover 12, as well as the lower blade 16 and the upper impeller cover 11, are connected by welding. Furthermore, the upper blade 19 and the lower impeller cover 12, as well as the lower blade 16 and the upper impeller cover 11, are positioned and welded by welding grooves 17 and welding bosses 18. Specifically, in this embodiment, welding bosses 18 are provided on the upper blade 19 and the lower blade 16, and welding grooves 17 are provided on the lower impeller cover 12 and the upper impeller cover 11, thereby achieving the purpose of welding positioning. Of course, in some embodiments, the impeller structure may adopt other structural forms, and those skilled in the art can select a suitable impeller structure form based on actual needs and working conditions.

[0036] See Figure 2 and Figure 7 The motor rotor 2 includes a housing 21 and an iron core assembly 22. The iron core assembly 22 is disposed in the housing 21. The iron core assembly 22 is common knowledge in the art, so the specific structure of the iron core assembly 22 will not be described in detail in this embodiment.

[0037] The manufacturing process of the impeller rotor assembly in this embodiment is as follows: the upper impeller cover 11 and the upper blade 19 are injection molded together, the lower impeller cover 12 and the lower blade 16 are injection molded together, and the motor rotor is injection molded; the assembly of the upper impeller cover 11 and the upper blade 19 and the assembly of the lower impeller cover 12 and the lower blade 16 are ultrasonically welded to form the impeller 1; finally, the impeller 1 and the motor rotor 2 are ultrasonically welded together to form a complete impeller rotor assembly.

[0038] In this embodiment, a welding rib 14 is provided between the impeller lower cover 12 and the outer casing 21, and a welding groove 24 that cooperates with the welding rib 14 is provided between the two. This enables the impeller and the motor rotor to be connected to form a complete impeller rotor assembly. This allows the impeller and the motor rotor to be assembled according to actual needs and working conditions. When there are electric water pumps with the same motor platform but different performance requirements, it is only necessary to redevelop different impellers and weld the redeveloped impellers to the motor rotor of the same motor platform to meet the requirements. This not only reduces manufacturing costs but also improves the development cycle.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A split-type impeller rotor assembly, characterized in that, Between the impeller (1) and the motor rotor (2), one is provided with a welding rib (14) and the other is provided with a welding groove (24) that cooperates with the welding rib (14). The welding rib (14) is placed in the welding groove (24), and the impeller (1) and the motor rotor (2) are connected together by ultrasonic welding.

2. The split-type impeller rotor assembly according to claim 1, characterized in that, Between the impeller (1) and the motor rotor (2), one is provided with a positioning post (15), and the other is provided with a positioning hole (23) that cooperates with the positioning post (15). The positioning post (15) can be inserted into the positioning hole (23).

3. The split-type impeller rotor assembly according to claim 2, characterized in that, The height of the welding rib (14) is greater than the depth of the welding groove (24).

4. The split-type impeller rotor assembly according to claim 3, characterized in that, The cross-section of the welding rib (14) is triangular, and the cross-section of the welding groove (24) is quadrilateral.

5. The split-type impeller rotor assembly according to claim 1, characterized in that, Both the impeller (1) and the motor rotor (2) are provided with shaft holes, and the shaft holes on the impeller (1) and the motor rotor (2) are coaxially arranged.

6. The split-type impeller rotor assembly according to claim 5, characterized in that, Graphite bearings (13) are provided in the shaft hole on the impeller (1) and / or the shaft hole on the motor rotor (2).

7. The split-type impeller rotor assembly according to any one of claims 1-6, characterized in that, The impeller (1) includes an upper impeller cover (11), a lower impeller cover (12), a lower blade (16), and an upper blade (19). The lower blade (16) and the upper blade (19) are alternately arranged in the circumferential direction. The upper impeller cover (11) and the upper blade (19) are integrally injection molded. The lower impeller cover (12) and the lower blade (16) are integrally injection molded. The upper blade (19) and the lower impeller cover (12) and the lower blade (16) and the upper impeller cover (11) are connected by welding.

8. The split-type impeller rotor assembly according to claim 7, characterized in that, The upper blade (19) and the lower impeller cover (12) and the lower blade (16) and the upper impeller cover (11) are positioned and welded by welding groove (17) and welding boss (18).

9. The split-type impeller rotor assembly according to claim 7, characterized in that, The motor rotor (2) includes a housing (21) and a core assembly (22), the core assembly (22) being disposed in the housing (21); between the impeller lower cover (12) and the housing (21), one is provided with a welding rib (14), and the other is provided with a welding groove (24) that cooperates with the welding rib (14).

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