Shell applied to outer rotor of automobile electronic water pump

Abstract

According to the shell applied to the outer rotor of the automobile electronic water pump, the magnetic steel supporting part is arranged on the shell body, the magnetic steel in the shell body is effectively supported and fixed, the magnetic steel is prevented from displacing or loosening in the operation process, and the stability and reliability of the automobile electronic water pump are ensured. And the impeller limiting part can be matched with the impeller on the shell body in a limiting mode, the rotation and the up-down position of the impeller on the shell body are limited, the impeller is prevented from shaking or shifting in the operation process, the working stability of the automobile electronic water pump is further improved, and the service life of the automobile electronic water pump is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive electric water pumps, and particularly relates to a housing applied to the outer rotor of an automotive electric water pump. Background Art

[0002] In the outer rotor structure of the existing automotive electric water pump, the impeller and the housing are usually of an integral structure. Due to the tight connection between the impeller and the housing, it is very difficult to disassemble and repair the entire water pump. In addition, after long-term use of the integral outer rotor structure, due to wear and aging, the gap between the impeller and the housing may increase, thereby reducing the working efficiency and reliability of the water pump. For the split impeller and housing, it is necessary to ensure the connection strength and structural stability between the two to avoid loosening of the impeller on the housing and independent rotation. Summary of the Invention

[0003] In view of this, the utility model provides a housing applied to the outer rotor of an automotive electric water pump.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] A housing applied to the outer rotor of an automotive electric water pump, including a housing body, an impeller is installed on the housing body. The housing body has a magnet support portion and an impeller limiting portion. The magnet support portion is formed by bending from the side of the housing body away from the impeller limiting portion towards the central axis direction of the housing body. The impeller limiting portion is connected to the impeller, and the impeller limiting portion limits the position of the impeller on the housing body.

[0006] Preferably, the impeller limiting portion is a limiting groove structure opened in the upper part of the housing body. The notch of the impeller limiting portion of the limiting groove structure faces upward of the housing body. A plurality of impeller limiting portions are equidistantly arranged on the housing body. One side of the housing body close to the impeller limiting portion protrudes towards the notch direction of the impeller limiting portion to form a bendable limiting end. A positioning end corresponding to the impeller limiting portion protrudes on the impeller. The positioning end extends into the impeller limiting portion and is connected to the housing body.

[0007] Preferably, the positioning end on the impeller extends into the impeller limiting portion and is in contact with the inner wall of the impeller limiting portion. The impeller limiting portion limits the rotation of the impeller on the housing body. The impeller is concavely formed with a limiting groove corresponding to the limiting end. The limiting groove is located above the positioning end. The limiting end bends towards the inside of the limiting groove, and the limiting end is in contact with the top surface of the positioning end to limit the up and down position of the impeller on the housing body.

[0008] Preferably, the impeller limiting part is a housing buckle structure arranged on the housing body, and the impeller is provided with an impeller buckle structure corresponding to the impeller limiting part, and the impeller buckle structure is buckled and connected with the impeller limiting part.

[0009] Preferably, a magnet installation groove is formed in the housing body, a plurality of magnets are arranged at equal intervals in the magnet installation groove, the magnet support part is arranged corresponding to the position of the magnet, a magnet separation part is arranged between adjacent magnet support parts, and the magnet separation part isolates adjacent magnets.

[0010] Preferably, the magnet separation part and the housing body are of an integrally formed structure, and the magnet separation part is bent from the part of the housing body between adjacent magnet support parts towards the center of the magnet installation groove.

[0011] Preferably, the magnet separation part and the housing body are of a split structure, a corresponding separation distance is formed between adjacent magnet support parts and adjacent magnets, a screw is arranged in the separation distance, the screw has a nut section and a screw rod section, the magnet separation part is arranged on the screw rod section, the screw rod section extends into the separation distance to isolate adjacent magnets, and the nut section presses adjacent magnet support parts.

[0012] The beneficial effects of the present utility model are as follows: By arranging a magnet support part on the housing body, the magnets in the housing body are effectively supported and fixed, preventing the magnets from shifting or loosening during operation, and ensuring the stability and reliability of the automotive electronic water pump. The setting of the impeller limiting part can be in limit cooperation with the impeller on the housing body, limit the rotation and up-and-down position of the impeller on the housing body, prevent the impeller from shaking or shifting during operation, and further enhance the working stability and service life of the automotive electronic water pump. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Att Figure 1 is a schematic structural diagram of the present utility model;

[0015] Att Figure 2 is Att Figure 1 a schematic structural exploded view;

[0016] Att Figure 3 is a schematic structural diagram of another embodiment;

[0017] Appendix Figure 4 It is the appendix Figure 3 Structure decomposition schematic diagram. Specific implementation manners

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0019] Next, the present utility model will be further described in conjunction with the accompanying drawings of the specification.

[0020] The present utility model provides the following technical solutions:

[0021] As shown in the appendix Figures 1-4 The present utility model discloses a housing applied to the outer rotor of an automotive electric water pump, including a housing body 1. An impeller 2 is installed on the housing body 1. The housing body 1 has a magnet support portion 3 and an impeller limiting portion 4. The magnet support portion 3 is formed by bending from the side of the housing body 1 away from the impeller limiting portion 4 towards the central axis direction of the housing body 1. The impeller limiting portion 4 is connected to the impeller 2, and the impeller limiting portion 4 limits the position of the impeller 2 on the housing body 1. Specifically, in this design, by providing the magnet support portion 3 on the housing body 1, the magnet 9 inside the housing body 1 is effectively supported and fixed, preventing the magnet 9 from shifting or loosening during operation, and ensuring the stability and reliability of the automotive electric water pump. The setting of the impeller limiting portion 4 can be in limiting cooperation with the impeller 2 on the housing body 1 to limit the rotation and vertical position of the impeller 2 on the housing body 1, preventing the impeller 2 from shaking or shifting during operation, and further enhancing the working stability and service life of the automotive electric water pump.

[0022] Refer to the appendix Figures 1-2, in one embodiment, the impeller limiting part 4 is a limiting groove structure opened in the upper part of the housing body 1. The notch of the impeller limiting part 4 of the limiting groove structure faces upward of the housing body. A plurality of impeller limiting parts 4 are arranged at equal intervals on the housing body 1. One side of the housing body 1 close to the impeller limiting part 4 protrudes toward the notch direction of the impeller limiting part 4 to form a bendable limiting end 5. A positioning end 6 corresponding to the impeller limiting part 4 protrudes on the impeller 2. The positioning end 6 extends into the impeller limiting part 4 to be connected with the housing body. Specifically, in this embodiment, by arranging the equally spaced limiting groove structures on the housing body 1 as the impeller limiting part 4, it not only ensures the stability of the impeller 2 during rotation, but also increases the contact area between the impeller 2 and the housing body 1, further improving the heat dissipation performance of the entire automotive electronic water pump. In addition, the design of the bendable limiting end 5 makes the installation and disassembly of the impeller 2 more convenient, improving the convenience of maintenance. Additionally, in order to further improve the connection tightness between the impeller 2 and the housing body 1, positioning ends 6 corresponding to the impeller limiting part 4 are also arranged on the impeller 2. These positioning ends 6 can accurately extend into the limiting groove structure and be tightly connected with the housing body 1, effectively preventing the impeller 2 from shaking or shifting during operation. At the same time, the arrangement of the positioning ends 6 can also extend between adjacent magnetic steels 9 to play a role in isolating the magnetic steels 9.

[0023] Furthermore, the positioning end 6 on the impeller 2 extends into the impeller limiting part 4 and abuts against the inner wall of the impeller limiting part 4. The impeller limiting part 4 limits the rotation of the impeller 2 on the housing body 1. The impeller 2 is concavely formed with a limiting groove 7 corresponding to the limiting end 5. The limiting groove 7 is located above the positioning end 6. The limiting end 5 bends toward the inside of the limiting groove 7, and the top surface of the limiting end 5 abuts against the top surface of the positioning end 6 to limit the up and down position of the impeller 2 on the housing body 1. Specifically, in this embodiment, the positioning end 6 on the impeller 2 is in close contact with the inner wall of the impeller limiting part 4, ensuring the stability of the impeller 2 during rotation. The limiting groove 7 concavely formed on the impeller 2 corresponding to the limiting end 5 is located above the positioning end 6. This design ingeniously utilizes the spatial structure, enabling the limiting end 5 to be in close contact with the top surface of the positioning end 6 when bending toward the inside of the limiting groove 7. In this way, even under high-speed rotation, the impeller 2 can be firmly fixed inside the housing body 1, avoiding performance degradation or damage that may be caused by shaking or shifting.

[0024] Refer to the appendix Figures 3-4, in one embodiment, the impeller limiting portion 4 is a housing snap structure provided on the housing body 1, and the impeller 2 is provided with an impeller snap structure 8 corresponding to the impeller limiting portion 4, and the impeller snap structure 8 is snap-connected to the impeller limiting portion 4. Specifically, in this embodiment, a combined design of a housing snap structure and an impeller snap structure 8 is adopted. This design not only enhances the connection firmness between the impeller 2 and the housing body 1, but also brings great convenience to installation and disassembly. The housing snap structure can firmly hold the impeller snap structure 8, so that the impeller 2 is not prone to shaking or offset during high-speed rotation, further ensuring the stability and reliability of the automotive electronic water pump. In this embodiment, the impeller limiting portion 4 can be a snap groove formed on the housing body 1, and the impeller snap structure 8 is a snap end protruding from the impeller 2 corresponding to the snap groove, and the snap end extends into the snap groove and is snap-connected to the housing body 1.

[0025] Furthermore, a magnet installation groove 10 is formed in the housing body 1, and a plurality of magnets 9 are arranged at equal intervals in the magnet installation groove 10. The magnet support portion 3 is arranged corresponding to the position of the magnet 9, and a magnet separation portion 11 is arranged between adjacent magnet support portions 3, and the magnet separation portion 11 isolates adjacent magnets 9. Specifically, in this embodiment, the magnet installation groove 10 designed in the housing body 1 provides a stable installation environment for the magnets 9. By arranging a plurality of magnets 9 at equal intervals, the uniform distribution of the magnetic field during the operation of the automotive electronic water pump is ensured, thereby improving the efficiency of the water pump. The magnet support portion 3 is arranged corresponding to the position of the magnet 9, which not only provides additional support for the magnet 9, but also reduces the risk of deformation caused by uneven force on the magnet 9 by dispersing the support points. The magnet separation portion 11 arranged between adjacent magnet support portions 3 plays an important role in isolating adjacent magnets 9. This design effectively avoids the mutual interference of the magnetic fields between the magnets 9, ensuring the stability and reliability of the automotive electronic water pump during operation. At the same time, the magnet separation portion 11 can also serve as a heat dissipation channel between the magnets 9, helping to reduce the working temperature of the magnets 9 and extend their service life.

[0026] Further, the magnet separation part 11 and the housing body 1 are of an integrally formed structure, and the magnet separation part 11 is bent from the part of the housing body 1 between adjacent magnet support parts 3 towards the center direction of the magnet mounting groove 10. Specifically, in this embodiment, the magnet separation part 11 and the housing body 1 adopt an integrally formed structure, which not only improves the structural strength of the entire automotive electronic water pump, but also simplifies the production process and reduces the production cost. The magnet separation part 11 is bent from the part of the housing body 1 between adjacent magnet support parts 3 towards the center direction of the magnet mounting groove 10. This design cleverly utilizes the spatial structure of the housing body 1, enabling the magnet separation part 11 to not only isolate the magnets 9 but also serve as a support point for the magnets 9, further enhancing the stability and reliability of the magnets 9. In addition, the integrally formed structure also ensures the firm connection between the magnet separation part 11 and the housing body 1, avoiding the problem of connection loosening that may occur due to long-term use or harsh environments.

[0027] Refer to the attached Figure 4 In an embodiment, the magnet separation part 11 and the housing body 1 are of a split structure, and a corresponding separation distance 13 is formed between adjacent magnet support parts 3 and adjacent magnets 9. A screw 12 is arranged in the separation distance 13. The screw 12 has a nut section 14 and a screw rod section 15. The magnet separation part 11 is arranged on the screw rod section 15. The screw rod section 15 extends into the separation distance 13 to isolate adjacent magnets 9, and the screw rod section 15 is threadedly connected to the impeller 2. The nut section 14 presses against the adjacent magnet support part 3. Specifically, in this embodiment, the magnet separation part 11 and the housing body 1 adopt a split structure, and the separation distance 13 formed between adjacent magnet support parts 3 and adjacent magnets 9 provides space for the installation of the screw 12. The magnet separation part 11 is arranged on the screw rod section 15. The screw rod section 15 extends into the separation distance 13. By rotating the nut section 14, the screw rod section 15 is threadedly connected to the impeller 2, thereby isolating adjacent magnets 9. At the same time, the nut section 14 presses against the adjacent magnet support part 3, ensuring the stable connection between the magnet separation part 11 and the housing body 1. This design of the split magnet separation part 11 not only facilitates installation and disassembly but also effectively solves the problem of the change in the distance between the magnets 9 caused by the high-temperature expansion of the magnets 9.

[0028] In other embodiments, the screw 12 can also play a role in fixing the housing body 1 and the impeller 2. When the screw plays a fixing role, the screw is the impeller limiting structure 13 arranged on the housing body 1, and the screw 12 passes through the housing body 1 and is threadedly connected to the impeller 2 to achieve fixation.

[0029] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A housing applied to the outer rotor of an automotive electric water pump, including a housing body, and an impeller is installed on the housing body, characterized in that: The housing body has a magnet support portion and an impeller limiting portion. The magnet support portion is formed by bending from the side of the housing body away from the impeller limiting portion towards the central axis direction of the housing body. The impeller limiting portion is connected to the impeller, and the impeller limiting portion limits the position of the impeller on the housing body.

2. The housing applied to the outer rotor of the automotive electric water pump according to claim 1, wherein: The impeller limiting portion is a limiting groove structure opened in the upper part of the housing body. The notch of the impeller limiting portion of the limiting groove structure is arranged towards the upper part of the housing body. A plurality of impeller limiting portions are arranged at equal intervals on the housing body. One side of the housing body close to the impeller limiting portion protrudes towards the notch direction of the impeller limiting portion to form a bendable limiting end. A positioning end corresponding to the impeller limiting portion protrudes on the impeller, and the positioning end extends into the impeller limiting portion to be connected to the housing body.

3. The housing applied to the outer rotor of an automotive electric water pump according to claim 2, characterized in that: The positioning end on the impeller extends into the impeller limiting portion and abuts against the inner wall of the impeller limiting portion. The impeller limiting portion limits the rotation of the impeller on the housing body. The impeller is concavely formed with a limiting groove corresponding to the limiting end. The limiting groove is located above the positioning end. The limiting end bends towards the inside of the limiting groove, and the limiting end abuts against the top surface of the positioning end to limit the up and down position of the impeller on the housing body.

4. The housing applied to the outer rotor of the automotive electric water pump according to claim 1, characterized in that: The impeller limiting portion is a housing buckle structure arranged on the housing body. The impeller is provided with an impeller buckle structure corresponding to the impeller limiting portion, and the impeller buckle structure is buckled and connected with the impeller limiting portion.

5. The housing applied to the outer rotor of the automotive electric water pump according to claim 1, wherein: A magnet installation groove is formed in the housing body. A plurality of magnets are arranged at equal intervals in the magnet installation groove. The magnet support portion is arranged corresponding to the position of the magnet. A magnet separation portion is arranged between adjacent magnet support portions, and the magnet separation portion isolates adjacent magnets.

6. The housing applied to the outer rotor of an automotive electric water pump according to claim 5, characterized in that: The magnet separation portion and the housing body are of an integrally formed structure. The magnet separation portion is bent from the part of the housing body between adjacent magnet support portions towards the center direction of the magnet installation groove.

7. The housing applied to the outer rotor of the automotive electric water pump according to claim 5, characterized in that: The magnet separation portion and the housing body are of a split structure. A corresponding separation distance is formed between adjacent magnet support portions and adjacent magnets. A screw is arranged in the separation distance. The screw has a nut section and a screw rod section. The magnet separation portion is arranged on the screw rod section. The screw rod section extends into the separation distance to isolate adjacent magnets, and the nut section presses adjacent magnet support portions.

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