Waterproof sleeve, motor and electric water pump

Abstract

This utility model provides a water-proof sleeve, a motor, and an electric water pump, relating to the field of electric water pump structures. The water-proof sleeve includes an isolation section and an overlapping section connected to the isolation section, so that the main body of the water-proof sleeve is formed as a single-piece structure. Furthermore, the main body is formed as a metal stamping part. Compared with existing plastic water-proof sleeves, the thermal conductivity of the metal water-proof sleeve is significantly increased, thereby effectively improving the heat dissipation effect. In addition, the stamping part itself has a thinner structural characteristic, and the metal water-proof sleeve also has higher structural strength. Therefore, the wall thickness of the main body (compared to existing plastic water-proof sleeves) is smaller, which reduces the air gap between the stator and rotor, thereby effectively improving the working efficiency of the electric water pump. Furthermore, the isolation section is provided with multiple reinforcing ribs, thereby effectively ensuring the structural strength of the water-proof sleeve.

Description

Technical Field

[0001] This application relates to the field of electric water pump structures, and in particular to a water-proof sleeve, a motor, and an electric water pump. Background Technology

[0002] The stator windings of an electric motor are one of the main heat-generating components in an electric water pump. When the ambient temperature is higher than the medium temperature, the heat dissipation effect of the motor windings through the motor body to the environment is not ideal. The heat dissipation method is to transfer heat to the coolant through a water jacket. However, existing water jackets are usually made of plastic, which has low thermal conductivity and poor heat dissipation effect. In addition, because the water jacket is made of plastic, in order to ensure its structural strength, the wall thickness of the plastic water jacket is large, which leads to a large air gap between the stator and the rotor, affecting the working efficiency of the electric water pump. Utility Model Content In view of this, the purpose of this application is to provide a water-proof sleeve, a motor, and an electric water pump to solve the problems of poor heat dissipation effect of existing plastic water-proof sleeves and the impact on the working efficiency of electric water pumps.

[0003] In accordance with the above objectives, a first aspect of this utility model provides a waterproof sleeve having a main body, wherein the main body comprises: The isolation section is provided with a limiting block for fixing the motor shaft, and the limiting block is connected with multiple reinforcing ribs; The overlapping portion is connected to the isolation portion so that the main body is formed as an integral structure; the overlapping portion also has a positioning recess. The main body is formed as a metal stamping part.

[0004] Preferably, the isolation portion is formed as a columnar structure, and a cavity is formed inside the isolation portion, the cavity extending through the top end of the isolation portion along the axial direction of the isolation portion.

[0005] Preferably, the limiting block is formed as a columnar structure, and the limiting block has a limiting cavity that corresponds to and is adapted to the motor shaft, the limiting cavity passing through both ends of the limiting block in the axial direction; the limiting block is welded to the bottom of the cavity.

[0006] Preferably, the motor shaft is inserted into the limiting cavity and welded to the inner wall of the limiting cavity and the bottom of the cavity.

[0007] Preferably, the axis of the motor shaft, the axis of the limiting block, and the axis of the cavity coincide.

[0008] Preferably, a plurality of the reinforcing ribs are arranged at intervals around the limiting block, and each of the reinforcing ribs extends radially along the limiting block.

[0009] Preferably, the two ends of the reinforcing rib extending in the direction of extension are connected to the outer side wall of the limiting block and the inner side wall of the isolation part, respectively.

[0010] Preferably, the overlapping portion is formed as a ring structure and is disposed at the top of the isolation portion; the positioning recess is located on the outer wall of the overlapping portion.

[0011] According to a second aspect of the present invention, an electric motor is provided, wherein the electric motor includes a water-proof sleeve as described above; the electric motor further includes a counter part that is fitted corresponding to the water-proof sleeve, the counter part having a protrusion corresponding to the positioning recess.

[0012] According to a third aspect of the present invention, an electric water pump is provided, wherein the electric water pump includes a motor as described above.

[0013] According to the present invention, a water-proof sleeve, a motor, and an electric water pump are disclosed. The water-proof sleeve includes an isolation section and an overlapping section connected to the isolation section, so that the main body of the water-proof sleeve is formed as an integral structure. Furthermore, the main body is formed as a metal stamping part. Compared with existing plastic water-proof sleeves, the thermal conductivity of the metal water-proof sleeve is significantly increased, thereby effectively improving the heat dissipation effect of the water-proof sleeve. In addition, the stamping part itself has the structural characteristic of being thinner, and the metal water-proof sleeve also has higher structural strength. Therefore, the wall thickness of the main body (compared to existing plastic water-proof sleeves) is smaller, which can reduce the air gap between the stator and rotor, thereby effectively improving the working efficiency of the electric water pump. Furthermore, the isolation section is provided with multiple reinforcing ribs, thereby effectively ensuring the structural strength of the water-proof sleeve.

[0014] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a water-proof sleeve according to an embodiment of the present utility model; Figure 2 This is another schematic diagram of a water-proof sleeve according to an embodiment of the present invention.

[0017] Icons: 1-Main body; 11-Edge area; 111-Positioning recess; 12-Isolation part; 2-Motor shaft; 3-Limiting block; 4-Reinforcing rib. Detailed Implementation The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0018] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0019] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0020] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0021] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0022] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0023] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0024] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0025] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0026] The first aspect of this utility model provides a waterproof sleeve, such as Figures 1 to 2 As shown, the waterproof sleeve in this embodiment has a main body 1, which includes an isolation portion 12 and an overlapping portion 11 connected to the isolation portion 12, so that the main body 1 is actually formed as a one-piece structure. Furthermore, the main body 1 is formed as a metal stamping part. That is, in this embodiment, it is manufactured by stamping a metal sheet; preferably, the main body 1 is formed as a stainless steel part. In the following, the specific structure of the above-mentioned components of the waterproof sleeve according to the present invention will be described in detail.

[0027] In this embodiment, as Figure 1As shown, the isolation portion 12 is formed as a columnar structure, and a cavity is formed inside the isolation portion 12, which extends through the top end of the isolation portion 12 along its axial direction. The isolation portion 12 is also provided with a limiting block 3 for fixing the motor shaft 2. This limiting block 3 increases the contact area between the motor shaft 2 and the main body 1, thereby increasing the stability of the connection between the motor shaft 2 and the main body 1. Specifically, as... Figure 2 As shown, the limiting block 3 is formed as a columnar structure, and the limiting block 3 has a limiting cavity that is adapted to the motor shaft 2. The limiting cavity extends through both ends of the limiting block 3 in the axial direction. In addition, the limiting block 3 is welded to the bottom of the cavity.

[0028] Furthermore, the motor shaft 2 is inserted into the limiting cavity and welded to the inner wall of the limiting cavity and the bottom of the cavity simultaneously. Preferably, the axis of the motor shaft 2, the axis of the limiting block 3, the axis of the cavity, and the axis of the isolation part 12 all coincide, thereby improving the overall stability of the main body 1.

[0029] In addition, in order to further improve the structural strength of the main body 1, such as Figure 2 As shown, the isolation section 12 also includes a plurality of reinforcing ribs 4. Specifically, the plurality of reinforcing ribs 4 are arranged at intervals around the limiting block 3, each reinforcing rib 4 extending radially along the limiting block 3, and the two ends of the reinforcing rib 4 extending in the direction of extension are respectively connected to the outer side wall of the limiting block 3 and the inner side wall of the isolation section 12 (by welding). More specifically, along the axial direction of the limiting block 3, the height of the reinforcing rib 4 in this embodiment is the same as the height of the limiting block 3; in addition, the ends of each reinforcing rib 4 in the length direction are formed with two chamfered structures, so that two adjacent reinforcing ribs 4, the limiting block 3, and the isolation section 12 form a trapezoidal structure; the chamfered structure can increase the contact area between the reinforcing rib 4 and the limiting block 3 and the isolation section 12, thereby improving the structural strength of the main body 1.

[0030] It should be noted that there are no specific restrictions on the specifications, quantity, spacing, etc. of the reinforcing ribs 4, as long as the above-mentioned technical effects can be achieved.

[0031] In this embodiment, as Figure 1 As shown, the overlapping portion 11 is formed into a ring structure and is disposed at the top of the isolation portion 12. The outer side wall of the overlapping portion 11 has a positioning recess 111, which facilitates the accurate and efficient assembly of the main body 1.

[0032] It should be noted that the specific structure and specifications of the overlapping part 11 and the isolation part 12 will not be described in detail. They can be determined based on the actual situation and with reference to the existing waterproof sleeve structure.

[0033] According to the present invention, the water-proof sleeve includes an isolation portion 12 and an overlapping portion 11 connected to the isolation portion 12, so that the main body 1 of the water-proof sleeve is formed as an integral structure. Furthermore, the main body 1 is formed as a metal stamping part. Compared with existing plastic water-proof sleeves, the thermal conductivity of the metal water-proof sleeve is significantly increased, thereby effectively improving the heat dissipation effect of the water-proof sleeve. In addition, the stamping part itself has the structural characteristic of being thinner, and the metal water-proof sleeve also has higher structural strength. Therefore, the wall thickness of the main body 1 (compared to existing plastic water-proof sleeves) is smaller, which can reduce the air gap between the stator and rotor, thereby effectively improving the working efficiency of the electric water pump. Furthermore, the isolation portion 12 is provided with multiple reinforcing ribs 4, thereby effectively ensuring the structural strength of the water-proof sleeve.

[0034] According to a second aspect of the present invention, an electric motor is provided, the electric motor including the water-proof sleeve as described above; in addition, the electric motor also includes a matching part that is fitted to the water-proof sleeve, the matching part having a protrusion corresponding to the positioning recess 111, thereby effectively ensuring the assembly efficiency of the electric motor.

[0035] According to a third aspect of the present invention, an electric water pump is provided, the electric water pump comprising the motor described above.

[0036] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A waterproof sleeve, comprising a main body, characterized in that, The subject includes: The isolation section is provided with a limiting block for fixing the motor shaft, and the limiting block is connected with multiple reinforcing ribs; The overlapping portion is connected to the isolation portion so that the main body is formed as an integral structure; the overlapping portion also has a positioning recess. The main body is formed as a metal stamping part.

2. The waterproof sleeve according to claim 1, characterized in that, The isolation section is formed as a columnar structure, and a cavity is formed inside the isolation section, which extends through the top of the isolation section along the axial direction of the isolation section.

3. The waterproof sleeve according to claim 2, characterized in that, The limiting block is formed into a columnar structure, and the limiting block has a limiting cavity that is adapted to the motor shaft. The limiting cavity extends through both ends of the limiting block in the axial direction. The limiting block is welded to the bottom of the cavity.

4. The waterproof sleeve according to claim 3, characterized in that, The motor shaft is inserted into the limiting cavity and welded to the inner wall of the limiting cavity and the bottom of the cavity.

5. The waterproof sleeve according to claim 4, characterized in that, The axis of the motor shaft, the axis of the limiting block, and the axis of the cavity coincide.

6. The waterproof sleeve according to claim 3, characterized in that, Multiple reinforcing ribs are arranged at intervals around the limiting block, and each reinforcing rib extends radially along the limiting block.

7. The waterproof sleeve according to claim 6, characterized in that, The two ends of the reinforcing rib extending in the direction of extension are respectively connected to the outer side wall of the limiting block and the inner side wall of the isolation part.

8. The waterproof sleeve according to claim 1, characterized in that, The overlapping portion is formed into a ring structure and is disposed at the top of the isolation portion; the positioning recess is located on the outer wall of the overlapping portion.

9. An electric motor, characterized in that, The motor includes a water-proof sleeve as described in any one of claims 1 to 8; the motor also includes a counter part that is fitted to the water-proof sleeve, the counter part having a protrusion corresponding to the positioning recess.

10. An electric water pump, characterized in that, The electric water pump includes the motor as described in claim 9.

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