CN219654959U - Electronic water pump and vehicle - Google Patents

Abstract

The utility model discloses an electronic water pump and a vehicle, wherein the electronic water pump comprises: the shell is an injection molding body and is provided with a first accommodating cavity, the bottom wall of the first accommodating cavity comprises a column body protruding in the direction away from the first accommodating cavity, and the column body defines a mounting groove; the rotating shaft is positioned in the first accommodating cavity, the end part of the rotating shaft is positioned in the mounting groove, the surface of the bottom wall of the cavity, which faces away from the first accommodating cavity, is provided with bottom wall grooves, and the bottom wall grooves are multiple and are distributed around the column body. According to the electronic water pump provided by the embodiment of the utility model, the wall thickness of the cavity bottom wall at the bottom wall groove can be reduced by arranging the bottom wall groove on the cavity bottom wall, so that the material flowing to the periphery of the first accommodating cavity is effectively throttled, the material is preferentially filled at the cavity bottom wall, poor filling of the material at the cavity bottom wall can be avoided, welding marks at the cavity bottom wall can be avoided, and the strength of the shell and the performance of the electronic water pump are improved.

Description

Electronic water pump and vehicle

Technical Field

The utility model relates to the technical field of water pumps, in particular to an electronic water pump and a vehicle with the same.

Background

The electronic water pump is widely used because of the advantages of accurate control and high efficiency. In the related art, the processing quality of the casing of the electronic water pump can influence the overall performance of the electronic water pump, the processing quality of the bottom wall of the casing is particularly important, in the casting process, the situation of casting deficiency is easy to occur at the bottom wall, welding marks can occur, the processing quality of the bottom wall is poor, and therefore the overall performance of the electronic water pump is influenced, and the improvement space exists.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide an electronic water pump, which can improve the filling quality of the bottom wall of the cavity, and eliminate weld marks, so that the casing has good structural strength.

According to an embodiment of the utility model, an electronic water pump includes: the shell is an injection molding body and is provided with a first accommodating cavity, the bottom wall of the first accommodating cavity comprises a column body protruding in the direction away from the first accommodating cavity, and the column body defines a mounting groove; the rotating shaft is positioned in the first accommodating cavity, the end part of the rotating shaft is positioned in the mounting groove, the surface of the bottom wall of the cavity, which faces away from the first accommodating cavity, is provided with bottom wall grooves, and the bottom wall grooves are multiple and are distributed around the column body.

According to the electronic water pump provided by the embodiment of the utility model, the wall thickness of the cavity bottom wall at the bottom wall groove can be reduced by arranging the bottom wall groove on the cavity bottom wall so as to effectively throttle the material flowing to the periphery of the first accommodating cavity, so that the material is preferentially filled at the cavity bottom wall, poor filling of the material at the cavity bottom wall can be avoided, welding marks at the cavity bottom wall can be avoided, and the strength of the shell and the performance of the electronic water pump are improved.

According to some embodiments of the utility model, the mounting groove comprises a first groove section and a second groove section, wherein the inner diameter of the first groove section is smaller than that of the second groove section, and the first groove section is positioned on one side of the second groove section, which is close to the first accommodating cavity.

According to some embodiments of the utility model, the inner peripheral surface of the second groove section is provided with a plurality of protrusions.

According to some embodiments of the utility model, the protrusions are bar-shaped, hemispherical or mesh-shaped protrusions.

According to the electronic water pump provided by some embodiments of the utility model, the depth of the mounting groove is H1, the axial length of the column body is H3, and H1/H3 is more than or equal to 0.5 and less than 1.

According to the electronic water pump of some embodiments of the present utility model, the axial length of the column is H3, and the wall thickness of the groove peripheral wall of the mounting groove is H4, wherein H4/H3 is greater than or equal to 0.25.

According to some embodiments of the utility model, the mounting groove further comprises a third groove section, the third groove section is located on one side of the first groove section away from the second groove section, and the inner diameter of the third groove section is larger than the inner diameter of the second groove section.

According to some embodiments of the utility model, the outer diameter of the cylinder is D4, the inner diameter of the third groove section is D5, and D5/D4 is more than or equal to 0.25 and less than or equal to 0.75.

According to the electronic water pump of some embodiments of the present utility model, the distance between two adjacent bottom wall grooves is W1, and the depth of the bottom wall grooves is H5, where 0.5 is less than or equal to W1/H5 is less than or equal to 1.5.

According to some embodiments of the utility model, the casing further has a second accommodating cavity, the second accommodating cavity is located on a side of the bottom wall of the cavity, facing away from the first accommodating cavity, the second accommodating cavity is used for accommodating a circuit board assembly of the electronic water pump, the depth of the bottom wall groove is H5, and the depth of the second accommodating cavity is H6, and H5/(H5+H2) < 0.8.

According to some embodiments of the utility model, the bottom wall groove is a sector groove, straight sides of two adjacent sector grooves are opposite and parallel to each other, and the plurality of sector grooves are uniformly distributed along the circumferential direction of the cylinder.

According to some embodiments of the utility model, the end of the rotating shaft is provided with a concave part, and the peripheral wall of the mounting groove is provided with a convex part embedded in the concave part.

According to some embodiments of the utility model, a stator assembly is arranged in the casing, the stator assembly is arranged around the first accommodating cavity, and the stator assembly is in injection molding connection with the casing.

The utility model further provides a vehicle.

The vehicle according to an embodiment of the utility model comprises the electronic water pump according to any of the above embodiments.

According to the vehicle provided by the embodiment of the utility model, the wall thickness of the cavity bottom wall at the bottom wall groove can be reduced by arranging the bottom wall groove on the cavity bottom wall so as to effectively throttle the material flowing to the periphery of the first accommodating cavity, so that the material is preferentially filled at the cavity bottom wall, poor filling of the material at the cavity bottom wall can be avoided, welding marks at the cavity bottom wall can be avoided, the strength of the shell and the performance of the electronic water pump are improved, and the reliability of the vehicle is improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of an electronic water pump according to an embodiment of the utility model;

fig. 2 is a cross-sectional view of an electronic water pump according to an embodiment of the utility model;

FIG. 3 is a schematic view of a chassis according to an embodiment of the present utility model;

FIG. 4 is a sectional view of the mounting of a housing and a spindle according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a mounting slot according to an embodiment of the utility model;

FIG. 6 is a schematic view of a bottom wall recess according to an embodiment of the present utility model;

FIG. 7 is a cross-sectional view of a bottom wall recess according to an embodiment of the present utility model;

fig. 8 is a schematic view of a vehicle according to an embodiment of the utility model.

Reference numerals:

an electronic water pump 100; a vehicle 1000;

a housing 10; a first accommodation chamber 101; a second accommodation chamber 102; a third accommodation chamber 103; a mounting groove 104; a first trough section 105; a second trough section 106; a third groove section 107; a cavity bottom wall 108; a convex portion 11; a column 12; a bottom wall groove 13;

a rotor assembly 20; a rotating shaft 30; a rotor bearing 40; a stator assembly 50; an end cap 60; a pump cover 70; a circuit board assembly 80.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Next, an electronic water pump 100 according to an embodiment of the present utility model is described with reference to the drawings.

As shown in fig. 1 to 8, an electronic water pump 100 according to an embodiment of the present utility model includes: the casing 10 and the rotating shaft 30, the casing 10 is an injection molding body and is provided with a first accommodating cavity 101, a cavity bottom wall 108 of the first accommodating cavity 101 comprises a column body 12 protruding away from the first accommodating cavity 101, and the column body 12 defines a mounting groove 104; the rotating shaft 30 is located in the first accommodating cavity 101, the end part of the rotating shaft 30 is located in the mounting groove 104, the surface of the cavity bottom wall 108, which faces away from the first accommodating cavity 101, is provided with bottom wall grooves 13, and the bottom wall grooves 13 are multiple and are distributed around the column body 12.

Thus, poor filling of materials at the cavity bottom wall 108 can be avoided, weld marks can be avoided from being formed at the cavity bottom wall 108, and the strength of the casing 10 and the performance of the electronic water pump 100 are improved.

For example, referring to fig. 1 to 4, the electronic water pump 100 is provided with a casing 10, the casing 10 is provided as an injection molded body, the casing 10 is configured as a cylindrical shape and is formed with an open first accommodation chamber 101, a pump cover 70 is mounted on the casing 10, the pump cover 70 is located at the open end of the first accommodation chamber 101 for closing the first accommodation chamber 101, a cylinder 12 is formed at a chamber bottom wall 108 of the first accommodation chamber 101, the cylinder 12 is located at a center position of the chamber bottom wall 108 and is configured to be convexly disposed in a direction away from the first accommodation chamber 101, a mounting groove 104 is defined at a side of the cylinder 12 facing the first accommodation chamber 101, and the mounting groove 104 communicates with the first accommodation chamber 101.

The electronic water pump 100 is further provided with a rotating shaft 30, the rotating shaft 30 is installed in the first accommodating cavity 101, the rotating shaft 30 is suitable for being arranged along the axial extension of the casing 10, the rotating shaft 30 is connected with the casing 10 in an injection molding manner when the casing 10 is in injection molding manner, one end of the rotating shaft 30 is fixed in the mounting groove 104, the rotating shaft 30 can be stably installed in the first accommodating cavity 101, the rotor assembly 20 is rotatably fixed on the rotating shaft 30 through the rotor bearing 40, and the rotating shaft 30 can support the rotor assembly 20, so that the electronic water pump 100 can stably work.

Wherein, can be provided with diapire recess 13 on the surface that the chamber diapire deviates from first chamber 101 that holds, diapire recess 13 is constructed to be set up towards first chamber 101 recess, diapire recess 13 sets up a plurality ofly, and a plurality of diapire recesses 13 encircle cylinder 12 spaced apart and arrange. It should be noted that the pouring opening of the casing 10 is generally disposed at a middle position of the bottom wall 108 of the cavity, that is, a position corresponding to the column 12.

It can be appreciated that by arranging the bottom wall groove 13 on the cavity bottom wall 108, the wall thickness of the cavity bottom wall 108 at the bottom wall groove 13 can be reduced, so that the gap between the bottom wall groove 13 and the pouring process is smaller, the resistance of the material flowing in the injection molding process is increased, the material flowing to the periphery of the first accommodating cavity 101 is effectively throttled, the material is preferentially filled at the cavity bottom wall 108, the poor filling of the material at the cavity bottom wall 108 can be avoided, the formation of welding marks at the cavity bottom wall 108 can be avoided, and the strength of the casing 10 and the performance of the electronic water pump 100 are further improved.

According to the electronic water pump 100 of the embodiment of the utility model, by arranging the bottom wall groove 13 on the cavity bottom wall 108, the wall thickness of the cavity bottom wall 108 at the bottom wall groove 13 can be reduced so as to effectively throttle the material flowing to the periphery of the first accommodating cavity 101, so that the material is preferentially filled at the cavity bottom wall 108, poor filling of the material at the cavity bottom wall 108 can be avoided, welding marks at the cavity bottom wall 108 can be avoided, and the strength of the casing 10 and the performance of the electronic water pump 100 are improved.

In some embodiments of the utility model, the mounting groove 104 comprises a first groove section 105 and a second groove section 106, the first groove section 105 having an inner diameter smaller than the inner diameter of the second groove section 106, the first groove section 105 being located on a side of the second groove section 106 adjacent to the first receiving chamber 101.

For example, referring to fig. 4-5, the mounting groove 104 includes a first groove section 105 and a second groove section 106, each of the first groove section 105 and the second groove section 106 is configured cylindrically, and axes of the first groove section 105 and the second groove section 106 coincide. The first groove section 105 is located at a side of the second groove section 106 close to the first receiving chamber 101, and an inner diameter of the first groove section 105 is smaller than an inner diameter of the second groove section 106. Meanwhile, the end of the rotation shaft 30 is formed with a first portion and a second portion corresponding to the first groove section 105 and the second groove section 106, respectively, the diameter of the first portion is configured to be equal to the inner diameter of the first groove section 105, and the diameter of the second portion is configured to be equal to the inner diameter of the second groove section 106. Thus, when the shaft 30 tends to disengage from the mounting groove 104, the second groove section 106 may axially limit the first portion of the shaft 30 to prevent the shaft 30 from disengaging from the mounting groove 104. Thereby, the installation stability between the rotation shaft 30 and the casing 10 is advantageously improved.

In some embodiments of the present utility model, the inner peripheral surface of the second groove section 106 is provided with a plurality of protrusions. For example, a protrusion may be provided on the inner peripheral surface of the second groove section 106, the protrusion being configured to be provided protruding inward in the radial direction of the rotation shaft 30, the protrusion being for supporting on the outer peripheral surface of the rotation shaft 30 to improve the mounting stability between the cavity bottom wall 108 and the rotation shaft 30. Wherein the protrusions may be provided in a plurality, the plurality of protrusions being evenly spaced or symmetrically arranged along the circumferential direction of the second groove section 106. In this way, the plurality of protrusions can collectively limit the rotation shaft 30. Thereby, the installation stability between the rotation shaft 30 and the cabinet 10 is improved.

In some embodiments of the utility model, the protrusions are bar, hemispherical or mesh protrusions. For example, the projections may be configured in a bar shape; alternatively, the protrusions may be configured as hemispheres; alternatively still, the projections may be configured as mesh-shaped projections, to which the present utility model is not limited. Thus, a flexible design of the electronic water pump 100 is achieved, which is beneficial to meeting different working conditions.

In some embodiments of the utility model, the mounting groove 104 has a depth H1, and the column 12 has an axial length H3, 0.5.ltoreq.H2/H2 < 1. For example, referring to fig. 5, the depth of the mounting groove 104 may be taken as H1, and the axial length of the cylinder 12 as H3, and the ratio of the depth H1 of the mounting groove 104 to the axial length H3 of the cylinder 12 may be such that: H1/H3 is more than or equal to 0.5 and less than 1. Specifically, the ratio of the depth H1 of the mounting groove 104 to the axial length H3 of the cylinder 12 may be taken as 0.6, for example, the ratio of the depth H1 of the mounting groove 104 to the axial length H3 of the cylinder 12 may be taken as 0.75; alternatively, the ratio of the depth H1 of the mounting groove 104 to the axial length H3 of the cylinder 12 may be taken to be 0.9; alternatively, the ratio of the depth H1 of the mounting groove 104 to the axial length H3 of the column 12 may be any value satisfying the condition, and the present utility model is not limited thereto.

By the arrangement, the mounting groove 104 can have enough depth, the contact area between the rotating shaft 30 and the column body 12 is increased, and the connection stability between the rotating shaft 30 and the casing 10 is improved.

In some embodiments of the utility model, the axial length of the column 12 is H3, and the wall thickness of the peripheral wall of the mounting groove 104 is H4, H4/H3. Gtoreq.0.25. For example, referring to fig. 5, the axial length of the column 12 may be H3, the wall thickness of the groove peripheral wall of the mounting groove 104 may be H4, and the ratio of the wall thickness H4 of the groove peripheral wall of the mounting groove 104 to the axial length H3 of the column 12 may be: H4/H3 is not less than 0.25, for example, the ratio of the wall thickness H4 of the groove peripheral wall of the mounting groove 104 to the axial length H3 of the column body 12 can be taken to be 0.3; alternatively, the ratio of the wall thickness H4 of the groove peripheral wall of the mounting groove 104 to the axial length H3 of the cylinder 12 may be taken to be 0.35; alternatively, the ratio of the wall thickness H4 of the groove peripheral wall of the mounting groove 104 to the axial length H3 of the column 12 may be any value satisfying the condition, and the present utility model is not limited thereto.

Through the above arrangement, the wall thickness of the groove peripheral wall of the mounting groove 104 is larger, so that the structural strength of the column body 12 is higher, the column body 12 is not easy to deform, and the mounting stability of the rotating shaft 30 is improved.

In some embodiments of the utility model, the mounting groove 104 further comprises a third groove section 107, the third groove section 107 being located on a side of the first groove section 105 remote from the second groove section 106, the third groove section 107 having an inner diameter that is larger than the inner diameter of the second groove section 106.

For example, referring to fig. 4-5, the mounting groove 104 is further provided with a third groove section 107, the third groove section 107 is located on a side of the first groove section 105 away from the second groove section 106, that is, on a side of the first groove section 105 close to the first accommodating cavity 101, the third groove section 107 is configured in a cylindrical shape, an axis of the third groove section 107 coincides with an axis of the first groove section 105 and an axis of the second groove section 106, an inner diameter of the third groove section 107 is larger than an inner diameter of the second groove section 106, a third portion is provided on the rotating shaft 30 corresponding to the third groove section 107, and the casing 10 may be injection-molded with the third groove section 107 on the third portion of the rotating shaft 30, so that the third groove section 107 may be in a limit fit with the rotating shaft 30.

It can be appreciated that by providing the third groove section 107, the connection area between the rotating shaft 30 and the mounting groove 104 can be increased, the mounting stability of the rotating shaft 30 is improved, and the rotating shaft 30 can define a concave injection molding space between the second portion and the third portion, so that the housing 10 can be injection molded.

In some embodiments of the utility model, the outer diameter of the cylinder 12 is D4 and the inner diameter of the third groove section 107 is D5, 0.25.ltoreq.D5/D4.ltoreq.0.75.

For example, referring to fig. 5, the outer diameter of the cylinder 12 may be D4, and the inner diameter of the third groove section 107 may be D5, where the ratio of the inner diameter D5 of the third groove section 107 to the outer diameter D4 of the cylinder 12 satisfies: D5/D4 is 0.25 or less and 0.75 or less, for example, the ratio of the inner diameter D5 of the third groove section 107 to the outer diameter D4 of the cylinder 12 can be taken to be 0.3; alternatively, the ratio of the inner diameter D5 of the third groove section 107 to the outer diameter D4 of the cylinder 12 may be taken to be 0.5; alternatively, the ratio of the inner diameter D5 of the third groove section 107 to the outer diameter D4 of the cylinder 12 may be taken to be 0.7; alternatively, the ratio of the inner diameter D5 of the third groove section 107 to the outer diameter D4 of the cylinder 12 may be any value satisfying the condition, and the present utility model is not limited thereto. Therefore, the third groove section 107 has a large enough inner diameter so as to facilitate the injection molding of the casing 10, and the structural strength of the column 12 is prevented from being too low due to the too large inner diameter of the third groove section 107, thereby improving the reliability of the casing 10.

In some embodiments of the present utility model, the spacing between two adjacent bottom wall grooves 13 is W1, and the depth of the bottom wall grooves 13 is H5, 0.5.ltoreq.W1/H5.ltoreq.1.5.

For example, referring to fig. 6 and 7, it is possible to set the pitch of two adjacent bottom wall grooves 13 to W1 and the depth of the bottom wall groove 13 to H5, and the ratio of the pitch W1 of two adjacent bottom wall grooves 13 and the depth H5 of the bottom wall groove 13 satisfies: W1/H5 is more than or equal to 0.5 and less than or equal to 1.5, for example, the ratio of the distance W1 between two adjacent bottom wall grooves 13 and the depth H5 of the bottom wall grooves 13 can be taken to be 0.75; alternatively, the ratio of the spacing W1 of adjacent two bottom wall grooves 13 to the depth H5 of the bottom wall groove 13 may be taken as 1; alternatively still, the ratio of the spacing W1 of adjacent two bottom wall grooves 13 to the depth H5 of the bottom wall groove 13 may be taken as 1.25; alternatively, the ratio of the distance W1 between adjacent two bottom wall grooves 13 and the depth H5 of the bottom wall groove 13 may be any value satisfying the condition, which is not limited by the present utility model.

Through the arrangement, the situation that the depth of the bottom wall groove 13 is too large and the distance between two adjacent bottom wall grooves 13 is too small can be avoided, the structural strength of the cavity bottom wall 108 is improved, the situation that the depth of the bottom wall groove 13 is too small and the distance between two adjacent bottom wall grooves 13 is too large can be avoided, the bottom wall groove 13 can effectively throttle materials, the injection molding quality of the cavity bottom wall 108 is improved, and the integral structural strength of the shell 10 is improved.

In some embodiments of the present utility model, the casing 10 further has a second accommodating cavity 102, the second accommodating cavity 102 is located on a side of the cavity bottom wall 108 facing away from the first accommodating cavity 101, the second accommodating cavity 102 is used for accommodating the circuit board assembly 80 of the electronic water pump 100, the depth of the bottom wall groove 13 is H5, and the depth of the second accommodating cavity 102 is H6, where H5/(h5+h6) < 0.8.

For example, referring to fig. 2 and 6, the casing 10 is further provided with a second accommodating cavity 102, the second accommodating cavity 102 is located at a side of the cavity bottom wall 108 facing away from the first accommodating cavity 101, the second accommodating cavity 102 is used for accommodating the circuit board assembly 80 of the electronic water pump 100, the casing 10 is further provided with an end cover 60, the end cover 60 is located at a side of the cavity bottom wall 108 facing away from the first accommodating cavity 101, and the end cover 60 is used for sealing the second accommodating cavity 102 so as to prevent external impurities from entering the second accommodating cavity 102 and contacting the circuit board assembly 80, thereby improving stability of the circuit board assembly 80.

Wherein, the depth of the bottom wall groove 13 may be set to H5, and the depth of the second accommodating chamber 102 is set to H6, and the ratio of the depth H5 of the bottom wall groove 13 to the sum of the depth H5 of the bottom wall groove 13 and the depth H6 of the second accommodating chamber 102 satisfies: H5/(H5+H2) < 0.8. Specifically, the ratio of the depth H5 of the bottom wall groove 13 to the sum of the depth H5 of the bottom wall groove 13 and the depth H6 of the second accommodation chamber 102 may be taken to be 0.6; alternatively, the ratio of the depth H5 of the bottom wall groove 13 to the sum of the depth H5 of the bottom wall groove 13 and the depth H6 of the second accommodation chamber 102 may be taken as 0.2; alternatively, the ratio of the depth H5 of the bottom wall groove 13 to the sum of the depth H5 of the bottom wall groove 13 and the depth H6 of the second accommodation chamber 102 may be any value satisfying the condition, which is not limited by the present utility model.

Through the arrangement, the problem that the thickness of the cavity bottom wall 108 at the bottom wall groove 13 is too small due to the too large depth of the bottom wall groove 13 can be avoided, the casting quality of the cavity bottom wall 108 is improved, and the structural strength of the shell 10 is improved.

In some embodiments of the present utility model, the bottom wall groove 13 is a sector groove, the straight sides of two adjacent sector grooves are opposite and parallel to each other, and the plurality of sector grooves are uniformly arranged along the circumferential direction of the cylinder 12.

For example, referring to fig. 6 to 7, the bottom wall groove 13 may be configured as a plurality of fan-shaped grooves, the fan-shaped grooves being arranged uniformly along the circumference of the cylinder 12, straight edges of two adjacent fan-shaped grooves being opposite and parallel to each other, a circulation portion being formed between the two adjacent fan-shaped grooves, the plurality of circulation portions being uniformly spaced apart along the circumference of the cylinder 12, the wall thickness of the cavity bottom wall 108 at the circulation portion being large, and during pouring, the resistance of the material at the circulation portion being small, the material may uniformly flow from the gaps at the plurality of circulation portions to the outer circumferential position of the first accommodation cavity 101, so that the casing 10 is uniformly poured. Thereby, the structural strength of the casing 10 is advantageously improved.

In some embodiments of the present utility model, the end of the rotating shaft 30 is provided with a recess, and the groove peripheral wall of the mounting groove 104 is provided with a protrusion 11 fitted into the recess.

For example, referring to fig. 4, a recess may be provided on an outer circumferential wall of an end portion of the rotation shaft 30, the recess being configured to be recessed inward in a radial direction of the rotation shaft 30, and a protrusion 11 may be formed on a groove circumferential wall of the installation groove 104, the protrusion 11 being for fitting into the recess to be engaged with the rotation shaft 30 at the time of injection molding. In this way, the protrusion 11 can limit the rotation shaft 30, so that the rotation shaft 30 and the cavity bottom wall 108 can be prevented from moving relatively. Thereby, the connection stability between the rotation shaft 30 and the casing 10 is advantageously improved.

Further, the concave part can be provided with a groove and a knurling structure, the knurling structure is arranged on one side of the groove close to the end part of the rotating shaft 30, and the convex part 11 is used for being matched with the knurling structure and the groove respectively so as to limit the rotating shaft 30 in the circumferential direction and the axial direction, and the installation stability of the rotating shaft 30 is improved.

In some embodiments of the present utility model, a stator assembly 50 is disposed within the housing 10, the stator assembly 50 is disposed around the first receiving cavity 101, and the stator assembly 50 is injection-molded with the housing 10.

For example, referring to fig. 2 to 4, a stator assembly 50 may be disposed in the casing 10, the stator assembly 50 is disposed around the first accommodating cavity 101, and the stator assembly 50 is used for injection molding connection with the casing 10 when the casing 10 is injection molded, so that the stator assembly 50 may be sleeved on the outer side of the rotating shaft 30, and the stator assembly 50 is used for driving the rotor assembly 20 to rotate around the rotating shaft 30, so that the electronic water pump 100 may work normally. Through the arrangement, the assembly difficulty of the electronic water pump 100 can be reduced, the installation stability and the installation accuracy of the stator assembly 50 and the machine shell 10 are improved, and the reliability of the electronic water pump 100 is improved.

The utility model also proposes a vehicle 1000.

As shown in fig. 8, a vehicle 1000 according to an embodiment of the present utility model includes the electronic water pump 100 according to any of the embodiments described above. Through set up diapire recess 13 on chamber diapire 108, can reduce the wall thickness of chamber diapire 108 in diapire recess 13 department to carry out effective throttle to the material that holds chamber 101 periphery to the flow, make the material fill in chamber diapire 108 department preferentially, can avoid the material to fill poorly in chamber diapire 108 department, and can avoid forming the weld mark in chamber diapire 108 department, improved the intensity of casing 10 and the performance of electronic water pump 100, improved the reliability of vehicle 1000.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.

In the description of the present utility model, "plurality" means two or more.

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (14)

1. An electronic water pump, comprising:

the shell is an injection molding body and is provided with a first accommodating cavity, the bottom wall of the first accommodating cavity comprises a column body protruding in the direction away from the first accommodating cavity, and the column body defines a mounting groove;

the rotating shaft is positioned in the first accommodating cavity, the end part of the rotating shaft is positioned in the mounting groove, the surface of the bottom wall of the cavity, which faces away from the first accommodating cavity, is provided with bottom wall grooves, and the bottom wall grooves are multiple and are distributed around the column body.

2. The electronic water pump of claim 1, wherein the mounting groove comprises a first groove section and a second groove section, the first groove section having an inner diameter smaller than an inner diameter of the second groove section, the first groove section being located on a side of the second groove section proximate the first receiving cavity.

3. The electronic water pump of claim 2, wherein an inner peripheral surface of the second groove section is provided with a plurality of protrusions.

4. An electronic water pump according to claim 3, wherein the protrusions are bar-shaped, hemispherical or mesh-shaped protrusions.

5. The electronic water pump of claim 2, wherein the depth of the mounting groove is H1, the axial length of the column is H3, and 0.5.ltoreq.H2 < 1.

6. The electronic water pump according to claim 2, wherein the axial length of the column is H3, and the wall thickness of the peripheral wall of the mounting groove is H4, and H4/H3 is not less than 0.25.

7. The electronic water pump of claim 2, wherein the mounting groove further comprises a third groove section, the third groove section being located on a side of the first groove section remote from the second groove section, an inner diameter of the third groove section being greater than an inner diameter of the second groove section.

8. The electronic water pump of claim 7, wherein the outer diameter of the cylinder is D4 and the inner diameter of the third groove section is D5, 0.25-D5/D4-0.75.

9. The electronic water pump of claim 1, wherein the distance between two adjacent bottom wall grooves is W1, and the depth of the bottom wall grooves is H5, W1/H5 is 0.5-1.5.

10. The electronic water pump of claim 1, wherein the housing further has a second receiving cavity on a side of the cavity bottom wall facing away from the first receiving cavity, the second receiving cavity for receiving a circuit board assembly of the electronic water pump,

the depth of the bottom wall groove is H5, and the depth of the second accommodating cavity is H6, wherein H5/(H5+H2) < 0.8.

11. The electronic water pump of claim 1, wherein the bottom wall groove is a sector groove, straight sides of two adjacent sector grooves are opposite and parallel to each other, and a plurality of sector grooves are uniformly distributed along the circumferential direction of the column body.

12. The electronic water pump according to claim 1, wherein an end portion of the rotation shaft is provided with a recess, and a groove peripheral wall of the mounting groove is provided with a protrusion fitted into the recess.

13. The electronic water pump of any of claims 1-12, wherein a stator assembly is disposed within the housing, the stator assembly disposed around the first receiving cavity, and the stator assembly is injection molded with the housing.

14. A vehicle comprising an electronic water pump according to any one of claims 1-13.