CN219865452U - Electric pump - Google Patents

Abstract

One embodiment of the utility model discloses an electric pump, which comprises an end cover and a control assembly, wherein the end cover comprises a main body part, a containing part and a reinforcing part, the containing part comprises a first side wall, the main body part is provided with a mounting part, the mounting part comprises a first mounting part and a second mounting part, the first mounting part and the second mounting part are positioned on the same side of the first side wall, the reinforcing part comprises a first reinforcing part, the first reinforcing part extends from the first side wall towards a direction away from the first side wall, the first reinforcing part protrudes from the main body part towards a direction away from the control assembly, the first mounting part and the second mounting part are positioned on two different sides of the first reinforcing part, a first surface of the main body part between the first mounting part and the first reinforcing part is a plane, and/or a first surface of the main body part between the second mounting part and the first reinforcing part is a plane. The utility model has the characteristics of simplifying the structure of the mould used in the injection molding of the end cover and reducing the deformation of the end cover.

Description

Electric pump

[ field of technology ]

The present utility model relates to the field of vehicles, and more particularly to components of a vehicle lubrication system and/or cooling system.

[ background Art ]

The electric pump mainly provides a power source for a lubricating system of a vehicle, when the vehicle accelerates or runs at a high speed, the electric pump is in a high-temperature environment, an end cover of the electric pump is influenced by the environmental temperature to deform, and for reducing deformation of the end cover, the end cover is generally provided with a relatively complex reinforcing part, so that an injection mold structure of the end cover is relatively complex. Therefore, how to simplify the injection mold of the end cover and reduce the deformation of the end cover is a technical problem.

[ utility model ]

The utility model aims to provide an electric pump, which can simplify the structure of a mould used in injection molding of an end cover and reduce the deformation of the end cover.

In order to achieve the above object, one embodiment of the present utility model adopts the following technical scheme:

the utility model provides an electric pump, electric pump includes end cover and control assembly, the end cover includes main part, accommodation portion and reinforcing part, the main part with the integrative structure of accommodation portion, the main part with the integrative structure of reinforcing part, at least part the accommodation portion is from the main part is to keeping away from control assembly's direction is protruding, the accommodation portion includes first lateral wall, the main part is provided with the installation department, the installation department includes first installation department and second installation department, first installation department with the second installation department is located the same one side of first lateral wall, the reinforcing part includes first reinforcing part, first reinforcing part is from first lateral wall orientation is kept away from first lateral wall extends, first reinforcing part is from the main part is kept away from control assembly's direction is protruding, first installation department with the second installation department is located the different both sides of first reinforcing part, be located first installation department between first installation department with first surface of main part and/or second surface is located first surface between first installation department and the first surface.

In the above technical solution, the first surface of the main body portion between the first mounting portion and the first reinforcing portion is a plane, and/or the first surface of the main body portion between the second mounting portion and the first reinforcing portion is a plane, so that the structure of the end cover can be at least simplified, and further the injection mold of the end cover can be relatively simplified, and in addition, the first reinforcing portion can increase the structural strength of the end cover, and is beneficial to reducing the deformation amount of the end cover.

[ description of the drawings ]

FIG. 1 is a schematic view of the structure of an electric pump of the present utility model;

FIG. 2 is a schematic cross-sectional view of the electric pump of FIG. 1;

FIG. 3 is a schematic view of a part of the structure of the electric pump of FIG. 1 without a pump cover;

FIG. 4 is a schematic view of the first embodiment of the end cap of FIG. 1;

FIG. 5 is a schematic view of a second embodiment of the end cap of FIG. 1;

FIG. 6 is a schematic view of the gasket projected onto the end cap shown in FIG. 5;

FIG. 7 is a schematic view of a third embodiment of the end cap of FIG. 1;

FIG. 8 is a schematic view of the gasket projected onto the end cap shown in FIG. 7;

FIG. 9 is a schematic view of the end cap of FIG. 1 in one orientation;

fig. 10 is a schematic view of the control assembly of fig. 2.

Reference numerals: 1. an end cap; 11. a main body portion; 11a, a first part; 11b, a second part; 11c, a third section; 11d, a fourth part; 111. a first surface; 112. a second surface; 113. a mounting part; 113a, mounting holes; 1131. a first mounting portion; 1132. a second mounting portion; 1133. a third mounting portion; 1134. a fourth mounting portion; 115. a limit part; 12. a housing part; 121. a first sidewall; 122. a second sidewall; 123. a third sidewall; 124. a fourth sidewall; 13. a reinforcing part; 131. a first reinforcing part; 1311. a first reinforcing rib; 1312. a second reinforcing rib; 1313. a third reinforcing rib; 1314. fourth reinforcing ribs; 1315. fifth reinforcing ribs; 132. a second reinforcing part; 133. a third reinforcing part; 1331. a support rib; 134. a fourth reinforcing part; 1341. a first protrusion; 1342. a second protrusion; 1343. a third protrusion; 15. a first thickened portion; 16. a second thickened portion; 14. a positioning part; 2. an isolation part; 3. a pump housing; 4. a first rotor assembly; 41. a first rotor; 42. a second rotor; 43. a hydraulic chamber; 5. a second rotor assembly; 6. a stator assembly; 61. a stator core; 7. a control assembly; 71. positioning holes; 72. a capacitor; 8. a drive shaft; 9. a pump cover; 10. a first chamber; 20. a second chamber; 30. a third chamber; 40. a receiving chamber; 50. a sealing part; 60. and a fixing piece.

[ detailed description ] of the utility model

The utility model is further described with reference to the drawings and the specific embodiments below:

in order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings and the detailed description. It is evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. The terms upper, lower, etc. used herein are defined with respect to the positions of the components shown in the drawings, and are merely for clarity and convenience of presentation, it should be understood that the terms used herein should not limit the scope of the utility model as claimed.

Referring to fig. 1 to 10, the electric pump includes a pump housing, a first rotor assembly 4, a second rotor assembly 5, a stator assembly 6 and a control assembly 7, the pump housing being capable of forming a pump cavity, the first rotor assembly 4, the second rotor assembly 5, the stator assembly 6 and the control assembly 7 being located in the pump cavity, the pump cavity including a first cavity 10 and a second cavity 20, the first cavity 10 and the second cavity 20 being in communication, at least part of the first rotor assembly 4 being located in the first cavity 10, at least part of the second rotor assembly 5, at least part of the stator assembly 6 and at least part of the control assembly 7 being located in the second cavity 20, in other embodiments the first cavity 10 and the second cavity 20 may not be in communication. In one embodiment, the pump inner cavity further comprises a third cavity 30, the third cavity 30 is not communicated with the first cavity 10 and the second cavity 20, at least part of the first rotor assembly 4 is positioned in the first cavity 10, at least part of the second rotor assembly 5 and at least part of the stator assembly 6 is positioned in the second cavity 20, and the control assembly 7 is positioned in the third cavity 30.

The first rotor assembly 4 comprises a first rotor 41 and a second rotor 42, the first rotor 41 comprising a number of internal teeth and the second rotor 42 comprising a number of external teeth, the electric pump comprising a hydraulic chamber 43, the hydraulic chamber 43 being part of the first chamber 10, the hydraulic chamber 43 being located between the first rotor 41 and the second rotor 42. The stator assembly 6 comprises a stator core 61 and windings (not shown), when the electric pump works, the control assembly 7 controls the stator assembly 6 to generate a changed excitation magnetic field by controlling the current in the windings of the stator assembly 6 to change according to a preset rule, the second rotor assembly 5 rotates under the action of the excitation magnetic field, the second rotor assembly 5 can directly or indirectly drive the first rotor assembly 4 to rotate, and when the first rotor assembly 4 rotates, the volume of a hydraulic cavity of the first rotor assembly 4 changes, so that working medium is extruded to a water outlet (not shown) of the electric pump to generate flowing power. The electric pump further comprises a driving shaft 8, the driving shaft 8 can drive part of the first rotor assembly 4 to rotate, the driving shaft 8 is connected with the second rotor 42, the driving shaft 8 is connected with the second rotor assembly 5, and the second rotor assembly 5 drives the second rotor 42 to rotate through the driving shaft 8, so that the rotation of the first rotor assembly 4 is realized.

Referring to fig. 1 and 2, the pump housing includes an end cover 1, a partition 2, a pump housing 3 and a pump cover 9, wherein the end cover 1, the partition 2, the pump housing 3 and the pump cover 9 are relatively and fixedly connected, specifically, the end cover 1 and the partition 2 are connected by screws or bolts, which is beneficial to disassembly of the electric pump, and the control assembly 7 is located in a cavity formed by the end cover 1 and the partition 2, which is beneficial to maintenance of the control assembly 7 in the electric pump, and in other embodiments, the end cover 1 and the partition 2 can be connected by other connection modes, such as plugging, clamping and other connection modes. The isolation part 2 is connected with the pump shell 3 and the pump shell 3 is connected with the pump cover 9 through bolts or screws, so that the disassembly of the electric pump is facilitated, and the maintenance of the second rotor assembly 5 is facilitated, and in other embodiments, the isolation part 2 and the pump shell 3 and the pump cover 9 can be connected through other connection modes, such as plugging, clamping and the like.

Referring to fig. 4 to 10, the end cap 1 includes a main body 11, a receiving portion 12 and a reinforcing portion 13, the main body 11 and the receiving portion 12 are integrally formed, the main body 11 and the reinforcing portion 13 are integrally formed, at least a portion of the receiving portion 12 protrudes from the main body 11 in a direction away from the control assembly 7, in this embodiment, the main body 11 includes a first surface 111 and a second surface 112 opposite to each other, the first surface 111 is away from the control assembly 7 relative to the second surface 112, at least a portion of the receiving portion 12 protrudes from the second surface 112 in a direction away from the first surface 111, the receiving portion 12 (or at least a portion of the receiving portion 12) can form the receiving cavity 40, the control assembly 7 includes a capacitor, and at least a portion of the capacitor is located in the receiving cavity 40. The accommodating portion 12 includes a first side wall 121 and a second side wall 122, and the orientation of the first side wall 121 is opposite to the orientation of the second side wall 122. In this embodiment, the first side wall 121 and the second side wall 122 are disposed in parallel, and the term "the first side wall 121 and the second side wall 122 are disposed in parallel" means that the parallelism tolerance of the second side wall 122 is within 2mm based on the first side wall 121 or within 2mm based on the second side wall 122. In the injection molding process of the end cover 1, the thickness of the first side wall 121 is equal to that of the second side wall 122, a gate for feeding is generally disposed at a mold position corresponding to the accommodating cavity 40, a first plane is defined, the first plane is parallel to the first side wall 121 and the second side wall 122, the gate is orthographic projected to the end cover 1, the center of the gate projection is located on the plane, the first plane divides the end cover 1 into a first part and a second part, the side of the first side wall 121 is the first part, the side of the second side wall 122 is the second part, and since the distances between the first side wall 121 and the second side wall 122 are equal to the corresponding outer edges of the end cover, if the thicknesses of the first side wall 121 and the second side wall 122 are equal, the casting of the first part and the casting of the second part are simultaneously performed, which is favorable for reducing deformation of the end cover 1 in the injection molding process and further favorable for assembling the end cover 1.

Referring to fig. 2 to 9, the electric pump includes a sealing portion 50, and the sealing portion 50 is located between the end cap 1 and the partition portion 2 in the axial direction of the electric pump, and the sealing portion 50 is in contact with the second surface 112 of the end cap 1, which is advantageous in improving the sealing effect of the electric pump. The main body 11 is provided with the mounting portion 113, and the end cover 1 is connected with the isolation portion 2 through the mounting portion 113, and the mounting portion 113 is arranged along the circumferential direction of the end cover 1, so that the end cover 1 and the isolation portion 2 have a larger contact area, and the connection strength of the end cover 1 and the isolation portion 2 is improved. The mounting portion 113 has a mounting hole 113a, and the electric pump includes a fixing member 60, and the fixing member 60 (for example, a screw or a bolt) passes through the mounting hole 113a to connect the end cover 1 and the isolation portion 2, so that the connection mode of the end cover 1 and the isolation portion 2 is simple, and the mounting efficiency of the electric pump is improved. In the present embodiment, the mounting portions 113 are arranged at equal intervals in the circumferential direction of the end cap 1, so that the end cap 1 is uniformly stressed in the circumferential direction. Of course, in other embodiments, the mounting portions 113 are not equally spaced in the circumferential direction of the end cover 1, and may be disposed according to the use environment of the end cover 1. The end cover 1 is provided with the limiting parts 115, the limiting parts 115 extend from the second surface 112 towards the direction far away from the second surface 112, the number of the limiting parts 115 is the same as that of the mounting parts 113, the sealing parts 50 can be limited from multiple directions, and in the embodiment, the limiting parts 115 are on the same circumference. The sealing part 50 is limited by the extrusion of the end cover 1 and the isolation part 2 and the limiting part 115 to realize sealing, the sealing part 50 and the reinforcing part 13 are orthographic projected to the first surface 111, the partial projection of the reinforcing part 13 is positioned in the projection range of the sealing part 50, if the end cover 1 is deformed under the influence of temperature, the extrusion force of the end cover 1 to the sealing part 50 is correspondingly reduced, gaps can occur between the end cover 1 and the sealing part 50, working medium in the second cavity 20 can leak, the structural strength of the end cover 1 is improved by arranging the reinforcing part 13, and the deformation of the end cover 1 due to temperature is reduced.

Referring to fig. 4 to 8, the mounting portion 113 includes a first mounting portion 1131 and a second mounting portion 1132, the first mounting portion 1131 and the second mounting portion 1132 are located on the same side of the first sidewall 121, the reinforcing portion 13 includes a first reinforcing portion 131, the first reinforcing portion 131 extends from the first sidewall 121 in a direction away from the first sidewall 121, the first reinforcing portion 131 protrudes from the main body portion 11 in a direction away from the control assembly 7, the first mounting portion 1131 and the second mounting portion 1132 are located on different sides of the first reinforcing portion 131, the first surface 111 of the main body portion 11 between the first mounting portion 1131 and the first reinforcing portion 131 is a plane, and/or the first surface 111 of the main body portion 11 between the second mounting portion 1132 and the first reinforcing portion 131 is a plane, and herein, "plane" refers to a line of any two points on the surface that entirely falls on this plane. The structure of the end cap 1 can be relatively simplified, and thus the injection mold of the end cap 1 can be simplified, and in addition, the first reinforcing portion 131 can increase the structural strength of the end cap 1, which is beneficial to reducing the deformation amount of the end cap 1.

The mounting portion 113 includes a third mounting portion 1133 and a fourth mounting portion 1134, the third mounting portion 1133 and the fourth mounting portion 1134 are located on the same side of the second side wall 122, the reinforcing portion 13 includes a second reinforcing portion 132, the second reinforcing portion 132 extends from the second side wall 122 towards a direction away from the second side wall 122, the second reinforcing portion 132 protrudes from the main body portion 11 towards a direction away from the control component 7, in the axial direction of the end cover 1, the height of the second reinforcing portion 132 is smaller than the height of the accommodating portion 12, materials used when the second reinforcing portion 132 is injection molded can be relatively reduced, and a certain strength of the end cover 1 can be ensured. The third mounting portion 1133 and the fourth mounting portion 1134 are located on different sides of the second reinforcing portion 132, the first surface 111 of the main body portion 11 located between the third mounting portion 1133 and the second reinforcing portion 132 is a plane, and/or the first surface 111 of the main body portion 11 located between the fourth mounting portion 1134 and the second reinforcing portion 132 is a plane, which can relatively simplify the structure of the end cap 1, thereby being beneficial to simplifying the injection mold of the end cap 1, and in addition, the second reinforcing portion 132 can increase the structural strength of the end cap 1, thereby being beneficial to reducing the deformation amount of the end cap 1. When the end cap 1 is deformed by the influence of temperature, the reaction force of the sealing portion 50 on the end cap 1 can be conducted to the accommodating portion 12 through the first reinforcing portion 131 and the second reinforcing portion 132, which is beneficial to reducing the deformation amount of the end cap 1 to a certain extent. In some embodiments, such as shown in fig. 4, the first reinforcement 131 and the second reinforcement 132 are not symmetrically disposed about the central axis of the end cap 1. In some embodiments, for example, as shown in fig. 7, the first reinforcement portion 131 and the second reinforcement portion 132 are symmetrically disposed about a central axis of the end cap 1, the central axis of the end cap 1 is parallel to a plane in which the first sidewall 121 is located, and the first reinforcement portion 131 and the second reinforcement portion 132 have the same shape, and a structure of the first reinforcement portion 131 will be described in detail below.

The main body 11 includes a first portion 11a, the first reinforcing portion 131 includes a first reinforcing rib 1311 and a second reinforcing rib 1312, and the first portion 11a is located between the first reinforcing rib 1311 and the second reinforcing rib 1312 along an extending direction perpendicular to the first reinforcing rib 1311 or the second reinforcing rib 1312, and the first surface 111 of the first portion 11a is a plane, so that the structure of the end cover 1 can be relatively simplified, and further, the injection mold of the end cover 1 can be advantageously simplified.

The main body 11 includes a second portion 11b, the first reinforcing portion 131 includes a third reinforcing rib 1313, the second portion 11b is located between the second reinforcing rib 1312 and the third reinforcing rib 1313 along an extending direction perpendicular to the second reinforcing rib 1312 or the extending direction of the third reinforcing rib 1313, and the first surface 111 of the second portion 11b is a plane. The structure of the end cap 1 can be relatively simplified, and thus the injection mold of the end cap 1 can be simplified.

In some embodiments, referring to fig. 5 and 6, the extending direction of the first reinforcing rib 1311, the extending direction of the second reinforcing rib 1312, and the extending direction of the third reinforcing rib 1313 are not intersected, i.e. the extending direction of the first reinforcing rib 1311, the extending direction of the second reinforcing rib 1312, and the extending direction of the third reinforcing rib 1313 are parallel to each other. In the extending direction of the first side wall 121 or the extending direction of the second side wall 122, the second reinforcing rib 1312 is located between the first reinforcing rib 1311 and the third reinforcing rib 1313, and a space is provided between the first reinforcing rib 1311 and the second reinforcing rib 1312 and between the second reinforcing rib 1312 and the third reinforcing rib 1313, so that the structural strength can be increased to a part of the area of the end cover 1, thereby reducing the deformation amount of the end cover 1. In this embodiment, the space between the first reinforcing rib 1311 and the second reinforcing rib 1312 or the space between the second reinforcing rib 1312 and the third reinforcing rib 1313 is 8-12mm, so that the structural strength of a part of the area of the end cover 1 can be increased, thereby reducing the deformation amount of the end cover 1. The first reinforcing rib 1311 and the second reinforcing rib 1312 have a first interval therebetween, and the second reinforcing rib 1312 and the third reinforcing rib 1313 have a second interval therebetween, the second interval being equal to the first interval, where "equal to" means that the absolute value of the difference between the first interval and the second interval is not more than 1. In other embodiments, the direction of extension of the second reinforcement bar 1312 intersects the direction of extension of the first reinforcement bar 1311 and/or the direction of extension of the third reinforcement bar 1313 intersects the direction of extension of the first reinforcement bar 1311. In other embodiments, the thickness of the second reinforcing rib 1312 in the axial direction of the end cap 1 is greater than the thickness of the first reinforcing rib 1311 in the axial direction of the end cap 1 or the thickness of the third reinforcing rib 1313 in the axial direction of the end cap, and since the second reinforcing rib 1312 is relatively far from the mounting portion 113 with respect to the first reinforcing rib 1311 or the third reinforcing rib 1313, the influence of the fastening force of the fastening member 60 is small, the deformation amount of the region opposite to the second reinforcing rib 1312 is large, and the thickness of the second reinforcing rib 1312 is large to reduce the deformation amount of the region of the end cap 1. The first reinforcing rib 1311, the second reinforcing rib 1312, the third reinforcing rib 1313 and the sealing portion 50 are orthographic projected onto the first surface 111 of the end cover 1, and at least one of the projections of the first reinforcing rib 1311, the second reinforcing rib 1312 and the third reinforcing rib 1313 overlaps with the projection of the sealing portion 50, which is beneficial to increasing the extrusion force of the end cover 1 to the sealing portion 50 and reducing the deformation amount of the end cover 1.

Referring to fig. 7 to 8, the first reinforcement portion 131 includes a first reinforcement rib 1311, a second reinforcement rib 1312 and a third reinforcement rib 1313, the end cap 1 includes a first thickened portion 15, one end of the first thickened portion 15 is connected to the first reinforcement rib 1311, the other end of the first thickened portion 15 is connected to the third reinforcement rib 1313, and the first reinforcement rib 1311, the second reinforcement rib 1312 and the third reinforcement rib 1313 extend from the first side wall 121 to the first thickened portion 15. In an embodiment, the first reinforcing bead 1311, the second reinforcing bead 1312, and the third reinforcing bead 1313 extend from the first side wall 121 to the first thickened portion 15 in a direction perpendicular to the first side wall 121. In the extending direction of the first side wall 121, the second reinforcing rib 1312 is located between the first reinforcing rib 1311 and the third reinforcing rib 1313, at least a portion of the first surface 111 of the main body portion 11 located between the first reinforcing rib 1311 and the second reinforcing rib 1312 is planar, and at least a portion of the first surface 111 of the main body portion 11 located between the second reinforcing rib 1312 and the third reinforcing rib 1313 is planar. The structure of the end cap 1 can be relatively simplified, and thus the injection mold of the end cap 1 can be simplified. The first reinforcing rib 1311, the second reinforcing rib 1312, the third reinforcing rib 1313, the first thickened portion 15 and the sealing portion 50 are projected forward to the first surface 111 of the end cover 1, the area of the projection of the first thickened portion 15 falling into the projection of the sealing portion 50 is larger than the area of the projection of the first reinforcing rib 1311 (or the second reinforcing rib 1312 or the third reinforcing rib 1313) falling into the projection of the sealing portion 50, if the end cover 1 is deformed under the influence of temperature, the force of the end cover 1 on the sealing portion 50 is correspondingly reduced, gaps can possibly occur between the end cover 1 and the isolation portion 2, the area of the first reinforcing portion 131 opposite to the sealing portion 50 is larger, the deformation amount of the end cover 1 is reduced, and when the end cover 1 is deformed under the influence of temperature, the reaction force of the sealing portion 50 to the end cover 1 can be transmitted to the accommodating portion 12 through the first reinforcing rib 1311, the second reinforcing rib 1312 and the third reinforcing rib 1313, and the deformation amount of the end cover 1 can be further reduced.

The first reinforcement part 131 includes a fourth reinforcement rib 1314 and a fifth reinforcement rib 1315, the fourth reinforcement rib 1314 extends from the first sidewall 121 to the first thickened part 15, and an extending direction of the fourth reinforcement rib 1314 intersects with an extending direction of the first reinforcement rib 1311, an extending direction of the second reinforcement rib 1312, and an extending direction of the third reinforcement rib 1313; the fifth reinforcing rib 1315 extends from the first side wall 121 to the first thickened portion 15, the extending direction of the fifth reinforcing rib 1315 is intersected with the extending direction of the first reinforcing rib 1311, the extending direction of the second reinforcing rib 1312 and the extending direction of the third reinforcing rib 1313, the extending direction of the fourth reinforcing rib 1314 is intersected with the extending direction of the fifth reinforcing rib 1315, the fourth reinforcing rib 1314 and the fifth reinforcing rib 1315 extend from the first side wall 121 to the first thickened portion 15, the fixing strength of the first thickened portion 15 can be further increased, the first thickened portion 15, the fourth reinforcing rib 1314, the fifth reinforcing rib 1315 and the sealing portion 50 are orthographic projected to the first surface 111 of the end cover 1, the area of the first thickened portion 15 projected into the sealing portion 50 is larger than the area of the fourth reinforcing rib 1314 (or the fifth reinforcing rib 1315) projected into the sealing portion 50, if the end cover 1 is deformed under the influence of temperature, a gap can appear between the end cover 1 and the isolating portion 2, the first reinforcing rib 131 and the sealing portion 131 can be further reduced, deformation of the end cover 1 can be further reduced by the sealing portion 1, and the deformation of the end cover 1 can be further reduced when the sealing portion 1 is deformed by the opposite to the fourth reinforcing rib 1315, and the deformation of the end cover 1 can be further reduced by the sealing portion 1 is better.

Referring to fig. 7 and 8, the accommodating portion 12 includes a third sidewall 123, the first sidewall 121 is connected to the second sidewall 122, the first sidewall 121 is connected to the third sidewall 123, the reinforcing portion 13 includes a third reinforcing portion 133, the third reinforcing portion 133 extends from the third sidewall 123 toward a direction close to an edge of the end cap 1, the first mounting portion 1131 and the third mounting portion 1133 are located on different sides of the third reinforcing portion 133, the first surface 111 of the main body 11 between the first mounting portion 1131 and the third reinforcing portion 133 is a plane, and/or the first surface 111 of the main body 11 between the third mounting portion 1133 and the third reinforcing portion 133 is a plane. The structure of the end cap 1 can be relatively simplified, thereby facilitating the simplification of the injection mold of the end cap 1, and in addition, the third reinforcing portion 133 can increase the structural strength of the end cap 1, thereby facilitating the reduction of the deformation amount of the end cap 1. The third reinforcing portion 133, the first reinforcing portion 131 and the sealing portion 50 are orthographic projected toward the first surface 111, and since the shortest distance between the third side wall 123 and the outer edge of the end cap 1 is smaller than the shortest distance between the first side wall 121 or the second side wall 122 and the outer edge of the end cap 1, the accommodating portion 12 can provide relatively strong structural strength, and the area of the projection of the third reinforcing portion 133 falling into the projection of the sealing portion 50 is smaller than the area of the projection of the first reinforcing portion 131 falling into the projection of the sealing portion 50. The third reinforcement 133 includes a support rib 1331, and the support rib 1331 extends from the third side wall 123 in a direction approaching the edge of the end cap 1.

The accommodating portion 12 includes a fourth side wall 124, the fourth side wall 124 is connected to the first side wall 121, the fourth side wall 124 is connected to the second side wall 122, the reinforcing portion 13 includes a fourth reinforcing portion 134, a portion of the fourth reinforcing portion 134 extends from the fourth side wall 124 toward a direction close to an edge of the end cap 1, the second mounting portion 1132 and the fourth mounting portion 1134 are located on different sides of the fourth reinforcing portion 134, the first surface 111 of the main body portion 11 located between the second mounting portion 1132 and the fourth reinforcing portion 134 is a plane, and/or the first surface 111 of the main body portion 11 located between the fourth mounting portion 1134 and the fourth reinforcing portion 134 is a plane, which may relatively simplify the structure of the end cap 1, thereby facilitating simplification of an injection mold of the end cap 1, and the fourth reinforcing portion 134 may increase the structural strength of the end cap 1, thereby facilitating reduction of deformation of the end cap 1. The fourth reinforcement part 134 and the sealing part 50 are orthographically projected toward the first surface 111, and since the shortest distance from the third sidewall 123 to the outer edge of the end cap is smaller than the shortest distance from the first sidewall 121 or the second sidewall 122 to the outer edge of the end cap, the area of the projection of the fourth reinforcement part 134 falling into the projection of the sealing part 50 is smaller than the area of the projection of the first reinforcement part 131 falling into the projection of the sealing part 50, and the fourth reinforcement part 134 includes a plurality of protrusions, the number of which is greater than the number of supporting ribs.

The main body 11 includes a third portion 11c, the fourth reinforcing portion 134 includes a first protrusion 1341 and a second protrusion 1342, the first protrusion 1341 and the second protrusion 1342 extend from the fourth sidewall 124 toward a direction near the edge of the end cap 1, and the third portion 11c is located between the first protrusion 1341 and the second protrusion 1342 along a direction perpendicular to the extending direction of the first protrusion 1341 or the extending direction of the second protrusion 1342, and the first surface 111 of the third portion 11c is a plane, which can relatively simplify the structure of the end cap 1, and is further beneficial to simplifying the injection mold of the end cap 1.

The main body 11 includes a fourth portion 11d, the fourth reinforcing portion 134 includes a third protrusion 1343, the end cap 1 includes a second thickened portion 16, the first protrusion 1341, the second protrusion 1342 and the third protrusion 1343 extend from the fourth side wall 124 to the second thickened portion 16, the fourth portion 11d is located between the second protrusion 1342 and the third protrusion 1343 along the extending direction perpendicular to the extending direction of the second protrusion 1342 or the extending direction of the third protrusion 1343, and the first surface 111 of the fourth portion 11d is a plane, which can relatively simplify the structure of the end cap 1, thereby being beneficial to simplifying the injection mold of the end cap 1.

The first protrusion 1341, the second protrusion 1342, the third protrusion 1343, the second thickened portion 16 and the sealing portion 50 are projected to the first surface 111, the area of at least one of the projection of the first protrusion 1341, the projection of the third protrusion 1343 and the projection of the second thickened portion 16 falling into the projection of the sealing portion 50 is smaller than the area of the projection of the second protrusion 1342 falling into the projection of the sealing portion 50, if the end cover 1 is deformed under the influence of temperature, the force of the end cover 1 on the sealing portion 50 is correspondingly reduced, gaps can occur between the end cover 1 and the isolation portion 2, the area of the fourth reinforced portion 134 opposite to the sealing portion 50 is more, and the deformation amount of the end cover 1 is reduced; when the end cap 1 is deformed by the influence of temperature, the reaction force of the sealing portion 50 to the end cap 1 can be transmitted to the accommodating portion 12 through the first protrusion 1341, the second protrusion 1342 and the third protrusion 1343, and the deformation amount of the end cap 1 can be further reduced. The first/second/third/fourth/fifth ribs, the support rib, and the first/second/third protrusions are projected onto the first surface, the projection shape of the first/second/third/fourth/fifth ribs may be a strip, an arc, or S, and the projection shape of the support rib 1331 or the projection shape of the first/second/third protrusions may be the above shape.

Referring to fig. 9 to 10, the end cap 1 further includes a positioning portion 14, the positioning portion 14 extends from the second surface 112 in a direction away from the second surface 112, the control assembly 7 includes positioning holes 71, when the end cap 1 and the control assembly 7 are assembled, the positioning portion 14 of the end cap 1 is inserted into the positioning holes 71 of the control assembly 7 and is disposed in clearance fit with the positioning holes 71, so that when the end cap 1 is assembled, the positioning portion 14 of the end cap 1 is in clearance fit with the positioning holes 71 of the control assembly 7, thereby being beneficial to improving the assembly accuracy of the end cap 1, and on the other hand, the end cap 1 can be prevented from being assembled by mistake, in this embodiment, the number of the positioning portions 14 is equal to the number of the positioning holes 71, in this embodiment, the number of the positioning portions 14 is two, the positioning portions 14 are cylindrical, and in other embodiments, the number of the positioning portions 14 can also be conical, square, and other shapes can be obtained.

It should be noted that: the above embodiments are only for illustrating the present utility model and not for limiting the technical solutions described in the present utility model, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present utility model may be modified or substituted by the same, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present utility model are intended to be included in the scope of the claims of the present utility model.

Claims (10)

1. An electric pump characterized in that the electric pump comprises an end cover (1) and a control assembly (7), wherein the end cover (1) comprises a main body part (11), a containing part (12) and a reinforcing part (13), the main body part (11) and the containing part (12) are integrally structured, the main body part (11) and the reinforcing part (13) are integrally structured, at least part of the containing part (12) protrudes from the main body part (11) in a direction far away from the control assembly (7), the containing part (12) comprises a first side wall (121), the main body part (11) is provided with a mounting part (113), the mounting part (113) comprises a first mounting part (1131) and a second mounting part (1132), the first mounting part (1131) and the second mounting part (1132) are positioned on the same side of the first side wall (121), the reinforcing part (13) comprises a first reinforcing part (131), the first reinforcing part (131) extends from the first side wall (121) towards the first side wall (1132) far away from the first side wall (1131) toward the first reinforcing part (121), the first surface (111) of the body portion (11) between the first mounting portion (1131) and the first reinforcing portion (131) is planar, and/or the first surface (111) of the body portion (11) between the second mounting portion (1132) and the first reinforcing portion (131) is planar.

2. The electric pump according to claim 1, characterized in that the housing (12) comprises a second side wall (122), the second side wall (122) being oriented opposite to the first side wall (121), the mounting (113) comprising a third mounting (1133) and a fourth mounting (1134), the third mounting (1133) and the fourth mounting (1134) being located on the same side of the second side wall (122), the reinforcement (13) comprising a second reinforcement (132), the second reinforcement (132) extending from the second side wall (122) in a direction away from the second side wall (122), the second reinforcement (132) being protruding from the body (11) in a direction away from the control assembly (7), the third mounting (1133) and the fourth mounting (1134) being located on different sides of the second reinforcement (132), the second reinforcement (132) being located between the third mounting (1133) and the second reinforcement (11311) or the surface (111) of the body (111).

3. The electric pump according to claim 1 or 2, characterized in that the main body portion (11) comprises a first portion (11 a), the first reinforcement portion (131) comprises a first reinforcement rib (1311) and a second reinforcement rib (1312), the first portion (11 a) is located between the first reinforcement rib (1311) and the second reinforcement rib (1312) in an extending direction perpendicular to the extending direction of the first reinforcement rib (1311) or the extending direction of the second reinforcement rib (1312), and the first surface (111) of the first portion (11 a) is a plane.

4. An electric pump according to claim 3, characterized in that the body part (11) comprises a second part (11 b), the first reinforcement part (131) comprises a third reinforcement rib (1313), the second part (11 b) is located between the second reinforcement rib (1312) and the third reinforcement rib (1313) in a direction perpendicular to the direction of extension of the second reinforcement rib (1312) or the direction of extension of the third reinforcement rib (1313), the first surface (111) of the second part (11 b) being planar.

5. The electric pump according to claim 1 or 2, characterized in that the first reinforcement (131) comprises a first reinforcement (1311), a second reinforcement (1312) and a third reinforcement (1313) the end cap (1) comprises a first thickened portion (15), the first reinforcement (1311), the second reinforcement (1312) and the third reinforcement (1313) extending from the first side wall (121) to the first thickened portion (15), the second reinforcement (1312) being located between the first reinforcement (1311) and the third reinforcement (1313) in the direction of extension of the first side wall (121), at least part of the first surface (111) of the body portion (11) of the first reinforcement (1311) and the second reinforcement (1312) being planar, and at least part of the first surface (111) of the body portion (11) of the second reinforcement (1312) and the third reinforcement (1313) being planar.

6. The electric pump according to claim 5, characterized in that the first reinforcement portion (131) further includes a fourth reinforcement rib (1314) and a fifth reinforcement rib (1315), the fourth reinforcement rib (1314) extending from the first side wall (121) to the first thickened portion (15), and an extending direction of the fourth reinforcement rib (1314) intersecting an extending direction of the first reinforcement rib (1311), an extending direction of the second reinforcement rib (1312), and an extending direction of the third reinforcement rib (1313); the fifth reinforcing rib (1315) extends from the first side wall (121) to the first thickened portion (15), an extending direction of the fifth reinforcing rib (1315) intersects with an extending direction of the first reinforcing rib (1311), an extending direction of the second reinforcing rib (1312) and an extending direction of the third reinforcing rib (1313), and an extending direction of the fourth reinforcing rib (1314) intersects with an extending direction of the fifth reinforcing rib (1315).

7. The electric pump according to claim 2, characterized in that the housing (12) comprises a third side wall (123), the third side wall (123) connecting the first side wall (121), the third side wall (123) connecting the second side wall (122), the reinforcement (13) comprising a third reinforcement (133), the third reinforcement (133) extending from the third side wall (123) in a direction close to the edge of the end cap (1), the first mounting portion (1131) and the third mounting portion (1133) being located on different sides of the third reinforcement (133), the first surface (111) of the body (11) between the first mounting portion (1131) and the third reinforcement (133) being planar, and/or the first surface (111) of the body (11) between the third mounting portion (1133) and the third reinforcement (133) being planar.

8. The electric pump according to claim 2 or 7, characterized in that the housing (12) comprises a fourth side wall (124), the fourth side wall (124) connecting the first side wall (121), the fourth side wall (124) connecting the second side wall (122), the reinforcement (13) comprising a fourth reinforcement (134), the fourth reinforcement (134) extending from the fourth side wall (124) in a direction towards the edge of the end cap (1), the second mounting portion (1132) and the fourth mounting portion (1134) being located on different sides of the fourth reinforcement (134), the first surface (111) of the body (11) between the second mounting portion (1132) and the fourth reinforcement (134) being planar, and/or the first surface (111) of the body (11) between the fourth mounting portion (1134) and the fourth reinforcement (134) being planar.

9. The electric pump according to claim 8, wherein the main body portion (11) includes a third portion (11 c), the fourth reinforcement portion (134) includes a first protrusion (1341) and a second protrusion (1342), the first protrusion (1341) and the second protrusion (1342) extend from the fourth side wall (124) toward a direction near an edge of the end cap (1), the third portion (11 c) is located between the first protrusion (1341) and the second protrusion (1342) in an extending direction perpendicular to the extending direction of the first protrusion (1341) or the extending direction of the second protrusion (1342), and the first surface (111) of the third portion (11 c) is a plane.

10. The electric pump according to claim 9, characterized in that the body portion (11) comprises a fourth portion (11 d), the fourth reinforcement portion (134) comprises a third protrusion (1343), the end cap (1) comprises a second thickened portion (16), the first protrusion (1341), the second protrusion (1342) and the third protrusion (1343) extend from the fourth side wall (124) to the second thickened portion (16), the fourth portion (11 d) is located between the second protrusion (1342) and the third protrusion (1343) along a direction perpendicular to the direction of extension of the second protrusion (1342) or the direction of extension of the third protrusion (1343), the first surface (111) of the fourth portion (11 d) is planar.