Electronic oil pump with filter screen

Abstract

The utility model provides an electronic oil pump with a filter screen, and belongs to the technical field of electronic oil pumps. Filter holes are formed in the filter screen body, the filter screen body is connected to the mounting groove in a pressed mode, the outer circumference of the filter screen body is larger than the inner circumference of the mounting groove, and the filter screen body is in interference fit with the mounting groove. The pump cover has the advantages that the outer periphery of the filter screen body is larger than the inner periphery of the mounting groove, the filter screen body is connected to the mounting groove in a pressing mode, and therefore the pump cover and the filter screen body are connected in the mode that the filter screen body and the mounting groove are in interference fit, and connection of the pump cover and the filter screen body is guaranteed under the condition that the strength of the filter screen body is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electronic oil pump technical field relates to an electronic oil pump with filter screen. BACKGROUND

[0002] New energy vehicles account for a higher and higher proportion in the automobile industry, and the technology is gradually developing. In the field of main drive motor cooling, oil cooling can enter the motor interior for cooling, and the oil cooling method is better than the water cooling method. The oil cooling method will gradually replace the old water cooling method, and the main components of oil cooling are electronic oil pumps.

[0003] For example, a utility model patent with application number CN202410517151.8 provides an electronic oil pump with enhanced electrical connection and sealing, which includes an oil pump, a circuit board, and a connector assembly. The connector assembly is installed on one side of the oil pump. The oil pump includes a waterproof breather valve and a housing. The housing has a pump rotor, a pump stator, a transmission gear set, and a filter screen assembly installed inside. The waterproof breather valve is installed on one side of the housing. The pump rotor, pump stator, transmission gear set, and filter screen assembly are all installed in the housing. The connector assembly is installed on one side of the housing. The filter screen assembly is installed at the lower middle part of the housing.

[0004] In summary, although some existing technical solutions add a filter screen to the housing, the general filter screen is embedded in the oil pump cover groove using a woven mesh. The disadvantage is that the strength is poor, and the woven mesh may deform over time, causing the filtering function to fail. The filter screen made of pure metal is difficult to connect with the pump cover, so there is room for improvement. SUMMARY

[0005] The utility model aims to solve the above problems in the prior art and provides an electronic oil pump with a filter screen.

[0006] The utility model can achieve the following technical solutions: an electronic oil pump with a filter screen, which includes:

[0007] A pump cover is provided with a mounting groove;

[0008] A filter screen body is formed with filter holes. The filter screen body is crimped to the mounting groove. The outer circumference of the filter screen body is greater than the inner circumference of the mounting groove, and the filter screen body is in interference fit with the mounting groove.

[0009] In the above-mentioned electronic oil pump with a filter screen, the filter screen body includes a filter part and a connecting part. The filter holes are located in the filter part. The connecting part is connected to the edge of the filter part. The thickness of the connecting part distributed along the axial direction of the filter screen body is greater than the thickness of the filter part distributed along the axial direction of the filter screen body.

[0010] In the electronic oil pump with filter screen, one end of the connecting part is connected with the edge of the filter part, and the edge of the filter part is bent to form the connecting part.

[0011] In the electronic oil pump with filter screen, the thickness of the connecting part distributed along the axial direction of the filter screen body is less than or equal to the depth of the mounting groove.

[0012] In the electronic oil pump with filter screen, the filter screen body is a stainless steel part, and the filter screen body is etched to form the filter holes.

[0013] The electronic oil pump with filter screen also comprises:

[0014] The pump cover is provided with a mounting groove and a limiting part connected with the side wall of the mounting groove and distributed towards the inside of the mounting groove.

[0015] The filter screen body is formed with filter holes, is accommodated in the mounting groove, and has an outer periphery less than or equal to the inner periphery of the mounting groove, and part of the limiting part can contact the filter screen body to limit the filter screen body in the mounting groove.

[0016] In the electronic oil pump with filter screen, part of the side wall of the mounting groove is riveted to form the limiting part.

[0017] In the electronic oil pump with filter screen, the thickness of the limiting part is less than the thickness of the mounting groove, and part of the limiting part protrudes from the mounting groove.

[0018] In the electronic oil pump with filter screen, the limiting part is distributed along the radial direction of the filter screen body.

[0019] In the electronic oil pump with filter screen, the filter screen body is a stainless steel part, and the filter screen body is etched to form the filter holes.

[0020] Compared with the prior art, the electronic oil pump with filter screen has the following beneficial effects:

[0021] 1. The pump cover and the filter screen body are connected by setting the outer periphery of the filter screen body to be greater than the inner periphery of the mounting groove and press-fitting the filter screen body in the mounting groove, thereby ensuring the connection of the pump cover and the filter screen body while ensuring the strength of the filter screen body.

[0022] 2. The thickness of the connecting part distributed along the axial direction of the filter screen body is greater than the thickness of the filter part distributed along the axial direction of the filter screen body, thereby increasing the contact area between the outer periphery of the filter screen body and the inner periphery of the mounting groove and making the connection of the filter screen body and the mounting groove more compact.

[0023] 3. One end of the connecting part is connected to the edge of the filter part. The edge of the filter part is bent and formed into the connecting part. Therefore, the filter body is a single piece. There is no problem with the connection stability between the woven mesh and the filter fixing seat. It has high strength and good stability.

[0024] 4. The filter screen body is accommodated by the mounting groove, and the limiting part can contact the filter screen body to restrict the filter screen body in the mounting groove, so that the filter screen body is located between the mounting groove and the limiting part, ensuring the connection between the pump cover and the filter screen body while ensuring the strength of the filter screen body.

[0025] 5. By riveting a portion of the side wall of the mounting groove to form a limiting part, the pump cover and the filter body can be fastened without fasteners or other connecting parts, simply by riveting a portion of the side wall of the mounting groove. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0027] Figure 2 This is an exploded view of Embodiment 1 of this utility model.

[0028] Figure 3 This is a schematic diagram of the internal structure of Embodiment 1 of this utility model.

[0029] Figure 4 for Figure 3 Enlarged view of part A.

[0030] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0031] Figure 6 This is an exploded view of Embodiment 2 of this utility model.

[0032] Figure 7 This is a schematic diagram of the internal structure of Embodiment 2 of this utility model.

[0033] Figure 8 for Figure 7 Enlarged view of part B.

[0034] In the figure, 100 is the pump cover; 110 is the mounting groove; 120 is the limiting part; 200 is the filter screen body; 210 is the filter part; 211 is the filter hole; and 220 is the connecting part. Detailed Implementation

[0035] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, the descriptions such as "first", "second", "one" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0038] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0040] The specific embodiments described herein are merely illustrative of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0041] Embodiment one

[0042] As Figures 1-4 shown, an electronic oil pump with filter screen, comprising: pump cover 100 and filter screen body 200.

[0043] Among them, the pump cover 100 is provided with mounting groove 110.

[0044] The filter screen body 200 is formed with filter holes 211, and the filter screen body 200 is press-fitted in the mounting groove 110, and the outer periphery of the filter screen body 200 is larger than the inner periphery of the mounting groove 110, and the filter screen body 200 is in interference fit with the mounting groove 110.

[0045] The filter screen body 200 is an important component for ensuring the normal operation of the oil pump and the entire lubricating system, and is usually installed at the inlet of the oil pump to filter out large particulate impurities such as metal shavings, dust and other contaminants in the lubricating oil to prevent these impurities from entering the interior of the oil pump and causing damage or blockage.

[0046] Specifically, in the prior art, the filter screen is usually made of metal wire mesh or synthetic material, while in the electronic oil pump with the filter screen, the filter screen body 200 is a stainless steel part, which is not prone to rust and has high strength.

[0047] Specifically, the filter screen body 200 is etched to form the filter holes 211, thereby saving the original weaving process of the filter screen, and the processing is relatively simple, and the filter screen body 200 is a one-piece part, and there is no problem of connection stability between the woven mesh and the filter screen fixing seat, and the strength is high and the stability is good.

[0048] In the embodiment, the pump cover 100 and the filter screen body 200 are connected in a manner that the outer periphery of the filter screen body 200 is larger than the inner periphery of the mounting groove 110, and the filter screen body 200 is press-fitted in the mounting groove 110 to make the filter screen body 200 in interference fit with the mounting groove 110, thereby ensuring the connection of the pump cover 100 and the filter screen body 200 while ensuring the strength of the filter screen body 200.

[0049] As shown in Figures 1-4 On the basis of the above embodiment, the filter screen body 200 includes a filtering portion 210 and a connecting portion 220, the filter holes 211 are located in the filtering portion 210, the connecting portion 220 is connected with the edge of the filtering portion 210, and the thickness of the connecting portion 220 distributed along the axial direction of the filter screen body 200 is greater than the thickness of the filtering portion 210 distributed along the axial direction of the filter screen body 200.

[0050] In the embodiment, the thickness of the connecting portion 220 distributed along the axial direction of the filter screen body 200 is greater than the thickness of the filtering portion 210 distributed along the axial direction of the filter screen body 200, so that the contact area between the outer periphery of the filter screen body 200 and the inner periphery of the mounting groove 110 is increased, and the connection of the filter screen body 200 and the mounting groove 110 in interference fit is more compact.

[0051] As shown in Figures 1-4 On the basis of the above embodiment, one end of the connecting portion 220 is connected with the edge of the filtering portion 210, and the edge of the filtering portion 210 is bent to form the connecting portion 220.

[0052] In the embodiment, one end of the connecting portion 220 is connected with the edge of the filtering portion 210, and the edge of the filtering portion 210 is bent and formed into the connecting portion 220, so that the filter screen body 200 is an integral piece, and there is no problem of connection stability between the woven screen and the filter screen fixing seat, and the strength is higher and the stability is good.

[0053] As shown in the above embodiment, the thickness of the connecting portion 220 distributed along the axial direction of the filter screen body 200 is less than or equal to the depth of the mounting groove 110. Figures 1-4

[0054] In the embodiment, the thickness of the connecting portion 220 distributed along the axial direction of the filter screen body 200 is less than or equal to the depth of the mounting groove 110, so that the filter screen body 200 is well hidden and protected, and the filter screen body 200 is prevented from being scratched by other components due to extending out of the pump cover 100.

[0055] Example Two

[0056] As shown in the above embodiment, the thickness of the connecting portion 220 distributed along the axial direction of the filter screen body 200 is less than or equal to the depth of the mounting groove 110. Figures 5-8

[0057] The pump cover 100 is provided with a mounting groove 110 and a limiting portion 120, and the limiting portion 120 is connected with the side wall of the mounting groove 110 and distributed into the mounting groove 110.

[0058] The filter screen body 200 is formed with filter holes 211, and the filter screen body 200 is accommodated in the mounting groove 110, the outer periphery of the filter screen body 200 is less than or equal to the inner periphery of the mounting groove 110, and part of the limiting portion 120 can be in contact with the filter screen body 200 to limit the filter screen body 200 in the mounting groove 110.

[0059] Specifically, in the prior art, the filter screen is usually made of metal wire mesh or synthetic material, while in the electronic oil pump with filter screen, the filter screen body 200 is a stainless steel piece, which is not easy to rust and has high strength.

[0060] Specifically, the filter screen body 200 is etched to form the filter holes 211, so that the original weaving process of the filter screen is saved, the processing is simple, and the filter screen body 200 is an integral piece, and there is no problem of connection stability between the woven screen and the filter screen fixing seat, and the strength is higher and the stability is good.

[0061] ​​In the embodiment, the filter screen body 200 is accommodated by the mounting groove 110, and the part of the limiting portion 120 can be in contact with the filter screen body 200 to limit the filter screen body 200 in the mounting groove 110, so that the filter screen body 200 is located between the mounting groove 110 and the limiting portion 120, and the connection between the pump cover 100 and the filter screen body 200 is ensured while the strength of the filter screen body 200 is ensured.

[0062] As shown in Figures 5-8 , on the basis of the above-mentioned embodiment, the part of the side wall of the mounting groove 110 is riveted to form the limiting portion 120.

[0063] In the embodiment, the limiting portion 120 is formed by riveting the part of the side wall of the mounting groove 110, and the pump cover 100 and the filter screen body 200 are connected without fasteners or other connecting members, and the fastening of the filter screen body 200 is only realized by riveting the part of the side wall of the mounting groove 110.

[0064] As shown in Figures 5-8 , on the basis of the above-mentioned embodiment, the thickness of the limiting portion 120 is less than the thickness of the mounting groove 110, and the part of the limiting portion 120 protrudes from the mounting groove 110.

[0065] In the embodiment, since the limiting portion 120 is formed by riveting the part of the side wall of the mounting groove 110, the thickness of the limiting portion 120 formed by riveting is less than the thickness of the mounting groove 110, and the part of the limiting portion 120 protrudes from the mounting groove 110 to form a small limiting protrusion, which can be in contact with the filter screen body 200 to limit the filter screen body 200 in the mounting groove 110.

[0066] As shown in Figures 5-8 , on the basis of the above-mentioned embodiment, the limiting portion 120 is distributed along the radial direction of the filter screen body 200.

[0067] In the embodiment, attention should be paid to the riveting direction when the limiting portion 120 is formed by riveting the part of the side wall of the mounting groove 110, and the limiting portion 120 is distributed along the radial direction of the filter screen body 200, so that the limiting portion 120 can be in contact with the filter screen body 200 to the greatest extent, and the connection between the pump cover 100 and the filter screen body 200 is ensured.

Claims

1. An electronic oil pump with a filter screen, characterized in that, include: The pump cover has a mounting groove. A filter body having filter holes is pressed into the mounting groove. The outer circumference of the filter body is larger than the inner circumference of the mounting groove, and the filter body and the mounting groove are interference-fitted. The filter body includes a filtering part and a connecting part. The filter holes are located in the filtering part. The connecting part is connected to the edge of the filtering part. The thickness of the connecting part distributed along the axial direction of the filter body is greater than the thickness of the filtering part distributed along the axial direction of the filter body. The filter body is made of stainless steel and is etched to form the filter holes.

2. The electronic oil pump with filter screen as described in claim 1, characterized in that: One end of the connecting part is connected to the edge of the filter part, and the edge of the filter part is bent to form the connecting part.

3. The electronic oil pump with filter screen as described in claim 2, characterized in that: The thickness of the connecting portion distributed along the axial direction of the filter body is less than or equal to the depth of the mounting groove.

4. An electronic oil pump with a filter screen, characterized in that, include: The pump cover is provided with a mounting groove and a limiting part, the limiting part being connected to the side wall of the mounting groove and distributed toward the mounting groove; A filter body having filter holes is accommodated in the mounting groove. The outer perimeter of the filter body is smaller than or equal to the inner perimeter of the mounting groove. A portion of the limiting portion can contact the filter body to restrict the filter body within the mounting groove. The limiting part is formed by pressing and riveting a portion of the sidewall of the mounting groove. The filter body is made of stainless steel and is etched to form the filter holes.

5. An electronic oil pump with a filter as described in claim 4, characterized in that: The thickness of the limiting part is less than the thickness of the mounting groove, and a portion of the limiting part extends out of the mounting groove.

6. The electronic oil pump with filter screen as described in claim 5, characterized in that: The limiting portion is distributed along the radial direction of the filter body.

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