Split type impeller rotor assembly

Abstract

The invention relates to the technical field of electronic water pumps, in particular to a split type impeller rotor assembly, a welding rib is arranged between an impeller and a motor rotor, a welding groove matched with the welding rib is formed in the other one of the impeller and the motor rotor, the welding rib is arranged in the welding groove, and the impeller and the motor rotor are connected together through ultrasonic welding. The impeller and the motor rotor can be assembled according to actual requirements and working conditions, when electronic water pumps with the same motor platform and different performance requirements exist, only different impellers need to be developed again, the re-developed impellers and the motor rotor of the same motor platform are welded and formed, and the requirements can be met; therefore, the manufacturing cost is reduced, and the development period is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic water pump, in particular to a split type impeller rotor assembly. BACKGROUND

[0002] With the rapid development of the automobile industry, as the performance of the automobile is developing towards more safety, more reliability, more stability, full-automatic intelligence and environmental protection and energy saving, electronic water pumps are widely used in automobile cooling systems and can well meet the market requirements.

[0003] In the electronic water pump, the impeller rotor is one of the most important components affecting its performance, and is generally made in an integrated manner by injection molding. Since the impeller rotor is generally made in an integrated manner, when there are electronic water pumps with the same motor platform but different performance requirements, the impeller rotor also needs to be re-injection molded, which leads to problems such as longer development cycle, high cost and impact on project progress.

[0004] In view of the above, there is an urgent need for a split type impeller rotor assembly to solve the problems existing in the prior art. SUMMARY

[0005] The present application aims to provide a split type impeller rotor assembly, which aims to solve the problems existing in the prior art that the impeller rotor is made by integrated injection molding, and the specific technical solution is as follows:

[0006] A split type impeller rotor assembly, between the impeller and the motor rotor, one of which is provided with a welding rib, and the other is provided with a welding groove matched with the welding rib, the welding rib is placed in the welding groove, and the impeller and the motor rotor are connected together by ultrasonic welding.

[0007] Preferably, between the impeller and the motor rotor, one of which is provided with a positioning column, and the other is provided with a positioning hole matched with the positioning column, the positioning column can be inserted into the positioning hole.

[0008] Preferably, the height of the welding rib is greater than the depth of the welding groove.

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

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

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

[0012] Preferably, the impeller comprises an upper impeller cover, a lower impeller cover, lower blades and upper blades, the lower blades and the upper blades are arranged alternately in the circumferential direction, the upper impeller cover is integrally injection molded with the upper blades, the lower impeller cover is integrally injection molded with the lower blades, and the upper blades and the lower impeller cover are connected by welding, and the lower blades and the upper impeller cover are connected by welding.

[0013] Preferably, the upper blades and the lower impeller cover are positioned and welded by welding grooves and welding bosses, and the lower blades and the upper impeller cover are positioned and welded by welding grooves and welding bosses.

[0014] Preferably, the motor rotor comprises a shell and a core assembly, the core assembly is arranged in the shell; one of the lower impeller cover and the shell is provided with a welding rib, and the other is provided with a welding groove matched with the welding rib.

[0015] The technical scheme of the present application has the following beneficial effects:

[0016] The present application realizes welding between the impeller and the motor rotor to form a complete impeller rotor assembly, so that the impeller and the motor rotor can be assembled according to actual requirements and working conditions, when there are electronic water pumps with the same motor platform and different performance requirements, only the developed different impellers need to be welded with the motor rotor of the same motor platform to meet the requirements, which not only reduces the manufacturing cost, but also improves the development cycle.

[0017] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide further understanding of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0019] Figure 1 is a structural schematic view of the impeller rotor assembly of the present application;

[0020] Figure 2 is Figure 1 is a sectional view of the impeller rotor assembly in the figure;

[0021] Figure 3 is Figure 2 is an enlarged view of A in the figure;

[0022] Figure 4 is Figure 1 is a structural schematic view of the lower impeller cover and the lower blades;

[0023] Figure 5 is Figure 1 Structure diagram of upper cover and upper blade of impeller;

[0024] Figure 6 is Figure 1 Structure diagram of impeller;

[0025] Figure 7 is Figure 1 Structure diagram of motor rotor;

[0026] Wherein, 1, impeller, 2, motor rotor, 11, upper cover of impeller, 12, lower cover of impeller, 13, graphite bearing, 14, welding rib, 15, positioning column, 16, lower blade, 17, welding groove, 18, welding boss, 19, upper blade, 21, shell, 22, core assembly, 23, positioning hole, 24, welding slot. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present application, the present application will be described more fully below, and preferred embodiments of the present application are given. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present application can be more thoroughly and completely understood.

[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 the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application.

[0029] Embodiment:

[0030] As Figures 1-7 shown, the present embodiment provides a split type impeller rotor assembly, one of the impeller 1 and the motor rotor 2 is provided with a welding rib 14, and the other is provided with a welding slot 24 matched with the welding rib 14, the welding rib 14 is placed in the welding slot 24, and the impeller 1 and the motor rotor 2 are connected together by ultrasonic welding.

[0031] Further, one of the impeller 1 and the motor rotor 2 is provided with a positioning column 15, and the other is provided with a positioning hole 23 matched with the positioning column 15, the positioning column 15 can be inserted into the positioning hole 23 to realize positioning between the impeller 1 and the motor rotor 2 before welding.

[0032] In this embodiment, welding ribs 14 and positioning columns 15 are arranged on the impeller 1, and welding grooves 24 and positioning holes 23 are arranged on the motor rotor 2, so as to realize positioning and ultrasonic welding between the impeller 1 and the motor rotor 2, and achieve the purpose of connecting the impeller 1 and the motor rotor 2 as a whole. Of course, in some embodiments, the welding ribs 14, the positioning columns 15, the welding grooves 24 and the positioning holes 23 can be arranged in other ways, for example, welding ribs and positioning columns are arranged on the motor rotor, and welding grooves and positioning holes are arranged on the impeller. Those skilled in the art can flexibly adjust the arrangement of the welding ribs, the positioning columns, the welding grooves and the positioning holes on the impeller and the motor rotor.

[0033] Further, as shown in Figure 3 , the height of the welding rib 14 is greater than the depth of the welding groove 24, so as to ensure that the welding rib 14 can fill the welding groove 24 after melting to form an integral structure, and realize the fastening 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 quadrangular, so as to realize that the welding rib can be smoothly inserted into the welding groove, and the melted welding rib can form an integral structure with the entire welding groove 24 after welding.

[0034] As shown in Figure 2 , the impeller 1 and the motor rotor 2 are both provided with shaft holes, and the shaft holes on the impeller 1 and the shaft holes on the motor rotor 2 are coaxially arranged. Further, graphite bearings 13 are arranged in the shaft holes on the impeller 1 and / or the shaft holes on the motor rotor 2, so as to realize that the impeller rotor assembly is sleeved on the shaft body and can rotate around the shaft body.

[0035] As shown in Figure 2 , Figure 4 , Figure 5 and Figure 6 , the impeller 1 includes an impeller upper cover 11, an impeller lower cover 12, lower blades 16 and upper blades 19. The lower blades 16 and the upper blades 19 are alternately arranged in the circumferential direction. The impeller upper cover 11 is integrally injection molded with the upper blades 19, and the impeller lower cover 12 is integrally injection molded with the lower blades 16. The upper blades 19 and the impeller lower cover 12 are connected by welding, and the lower blades 16 and the impeller upper cover 11 are also connected by welding. Further, the upper blades 19 and the impeller lower cover 12 are positioned and welded by welding grooves 17 and welding bosses 18, and the lower blades 16 and the impeller upper cover 11 are also positioned and welded by welding grooves 17 and welding bosses 18. Specifically, in this embodiment, welding bosses 18 are arranged on the upper blades 19 and the lower blades 16, and welding grooves 17 are arranged on the impeller lower cover 12 and the impeller upper cover 11, so as to achieve the purpose of welding positioning. Of course, in some embodiments, the structure of the impeller can adopt other structural forms. Those skilled in the art can select appropriate impeller structural forms based on actual needs and working conditions.

[0036] Referring to Figure 2 and Figure 7 The motor rotor 2 comprises a shell 21 and a core assembly 22, the core assembly 22 is arranged in the shell 21, the core assembly 22 is well known in the art, therefore the specific structure of the core assembly 22 is not described in detail in the embodiment.

[0037] The manufacturing process of the impeller rotor assembly in the embodiment is: the upper cover 11 of the impeller is injection molded together with the upper blade 19, the lower cover 12 of the impeller is injection molded together with the lower blade 16, and the motor rotor is injection molded; the combination of the upper cover 11 of the impeller and the upper blade 19 and the combination of the lower cover 12 of the impeller 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] The embodiment realizes the connection between the impeller and the motor rotor to form a complete impeller rotor assembly by arranging the welding rib 14 between the lower cover 12 of the impeller and the shell 21, and arranging the welding groove 24 matched with the welding rib 14, so that the impeller and the motor rotor can be assembled according to actual requirements and working conditions, when there are electronic water pumps with the same motor platform and different performance requirements, only the different impellers need to be developed, and the developed impellers and the motor rotor of the same motor platform are welded to meet the requirements, which not only reduces the manufacturing cost, but also improves the development cycle.

[0039] The above only describes the preferred embodiments of the present application and is not used to limit the present application, for those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A split impeller rotor assembly, characterized by, One of the impeller (1) and the motor rotor (2) is provided with a welding rib (14), and the other is provided with a welding groove (24) matched 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 impeller rotor assembly of claim 1, wherein, One of the impeller (1) and the motor rotor (2) is provided with a positioning column (15), and the other is provided with a positioning hole (23) matched with the positioning column (15), and the positioning column (15) can be inserted into the positioning hole (23).

3. The split impeller rotor assembly of claim 2, wherein, The height of the welding rib (14) is greater than the depth of the welding groove (24).

4. The split impeller rotor assembly of claim 3, wherein, The cross section of the welding rib (14) is triangular, and the cross section of the welding groove (24) is quadrilateral.

5. The split impeller rotor assembly of claim 1, wherein, The impeller (1) and the motor rotor (2) are provided with shaft holes, and the shaft holes of the impeller (1) and the motor rotor (2) are coaxially arranged.

6. The split impeller rotor assembly of claim 5, wherein, The graphite bearing (13) is arranged in the shaft hole of the impeller (1) and / or the shaft hole of the motor rotor (2).

7. The split impeller rotor assembly of any one of claims 1-6, wherein, The impeller (1) comprises an upper impeller cover (11), a lower impeller cover (12), lower blades (16) and upper blades (19), the lower blades (16) and the upper blades (19) are alternately arranged in the circumferential direction, the upper impeller cover (11) is integrally injection molded with the upper blades (19), the lower impeller cover (12) is integrally injection molded with the lower blades (16), and the upper blades (19) and the lower blades (16) are connected by welding.

8. The split impeller rotor assembly of claim 7, wherein, The upper blades (19) and the lower blades (16) are positioned and welded by welding grooves (17) and welding bosses (18).

9. The split impeller rotor assembly of claim 7, wherein, The motor rotor (2) comprises an outer shell (21) and a core assembly (22), the core assembly (22) is arranged in the outer shell (21), one of the lower impeller cover (12) and the outer shell (21) is provided with a welding rib (14), and the other is provided with a welding groove (24) matched with the welding rib (14).

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