Oil suction filter for dual-motor hybrid gearbox of commercial vehicle

Abstract

An oil suction filter for a dual-motor hybrid gearbox of a commercial vehicle comprises an upper shell, a lower shell and a filter layer assembly, the periphery of the filter layer assembly is fixedly arranged in a butt joint seam of the upper shell and the lower shell in a sealed mode, the butt joint seam of the upper shell and the lower shell is of a rectangular structure, and the filter layer assembly comprises corrugated filter paper and is of a flat structure. The butt seam corresponds to the lower portion of the filter layer assembly, supporting columns used for supporting the filter layer assembly are arranged in the upper shell and the lower shell respectively, and the butt seam is matched with the supporting columns, so that mistake proofing is conducted on the front face and the back face of the filter layer assembly; bosses protruding towards the interior of the filtering cavity are arranged on the bottom wall of the lower shell, protruding strips extending downwards are fixedly arranged on the bottom face of the filtering layer assembly, the bosses and the protruding strips are sequentially arranged in the width direction of the butt joint rectangular structure and are symmetrical about the center of the butt joint rectangular structure, and the top faces of the bosses are higher than the bottom faces of the protruding strips. And when the filter layer assembly horizontally rotates around the center of the filter layer assembly by 180 degrees, the lower ends of the raised lines interfere with the bosses.

Description

Technical Field

[0001] This utility model relates to an oil suction filter, specifically an oil suction filter for a dual-motor hybrid transmission in commercial vehicles. Background Technology

[0002] In dual-motor hybrid transmissions for commercial vehicles, a large-sized oil filter is required to filter the transmission fluid, improve fluid cleanliness, and reduce the risk of shaft seizure and abnormal bearing wear. Commercial vehicles, due to their high load capacity, large starting torque, and long operating mileage, accumulate a significant amount of impurities, necessitating a filter with high dirt-holding capacity. Authorized announcement number CN220159357U describes a fault-prevention structure for a filter. Due to its large filter chamber space and the inclusion of corrugated filter paper in its filter layer assembly, the filter meets the dirt-holding requirements of dual-motor hybrid transmissions for commercial vehicles. However, improvements are needed in impurity removal and filtration rate per unit time. The increased size leads to more complex inter-component relationships in the fault-prevention structure between the filter layer assembly and the housing, which burdens production and assembly. Therefore, a simplification of the fault-prevention structure in the filter is necessary. Utility Model Content

[0003] To address the problems in the existing technology, this utility model provides an oil suction filter for a dual-motor hybrid transmission in commercial vehicles, aiming to simplify the anti-misalignment structure between the filter layer assembly and the housing, and reduce the burden of production and assembly.

[0004] An oil filter for a dual-motor hybrid transmission in a commercial vehicle includes an upper housing and a lower housing that are connected to each other, forming a filter chamber between them. The upper and lower housings are respectively provided with an outlet and an inlet. A filter layer assembly for separating the upper and lower filter chambers is disposed within the filter chamber. The filter layer assembly is sealed and fixedly disposed within the joint between the upper and lower housings. The joint between the upper and lower housings is rectangular. The filter layer assembly includes corrugated filter paper forming a flat structure. The joint corresponds to the lower part of the filter layer assembly. Support columns for supporting and limiting the upper and lower surfaces of the filter layer assembly are respectively provided within the upper and lower housings. A boss protruding into the filter chamber is provided on the bottom wall of the lower housing. A downwardly extending ridge is fixedly disposed on the bottom surface of the filter layer assembly. The boss and ridge are arranged sequentially along the width direction of the rectangular structure of the joint and are symmetrical about the center of the rectangular structure of the joint. The top surface of the boss is higher than the bottom surface of the ridge. When the filter layer assembly rotates horizontally 180° around its center, the lower end of the ridge interferes with the boss.

[0005] Furthermore, a groove is formed on the outer surface of the lower housing at the position corresponding to the protrusion, and a magnet is fixedly installed in the groove.

[0006] Furthermore, the liquid inlet is located in the middle of the bottom wall of the lower shell, and the boss and the ridge are located on both sides of the liquid inlet.

[0007] Further, the width of the rectangular structure of the butt joint is set along its front-to-back direction. The protrusion and the boss are respectively biased to the left and right sides of the liquid inlet. A second boss is set on the bottom wall of the lower shell at the position to the right of the protrusion. A second groove is formed on the outer surface of the lower shell corresponding to the position of the second boss. A second magnet is fixedly set in the second groove. The second magnet and the magnet are respectively located on the front and back sides of the liquid inlet.

[0008] Furthermore, the filter layer assembly also includes a mesh frame that supports the filter paper. The mesh frame is integrated with the inner ring of the mounting ring. The mounting ring is located at the bottom of the flat structure and is clamped between the mating seam of the upper and lower housings and sealed to the upper or lower housing.

[0009] Furthermore, the mesh frame includes several ribs arranged side by side on the filter paper, the ends of which extend to and are integrally connected to the mounting ring.

[0010] Furthermore, the longitudinal direction of the rectangular structure of the butt joint is set along its left-right direction, the liquid outlet is located on the left side of the upper shell, the top wall of the upper shell is outwardly arc-shaped, and the left side of the top wall of the upper shell is higher than its right side.

[0011] Furthermore, fixing lugs are integrally provided on the opposite side walls of the upper shell, and support legs are integrally provided on the bottom wall of the lower shell.

[0012] The beneficial effects of this utility model are as follows: by positioning the filter layer assembly relative to the butt joint and cooperating with the support column, the front and back of the filter layer assembly are prevented from being reversed; and by utilizing the interference effect of the boss and the ridge and cooperating with the shape of the butt joint, the horizontal inversion of the filter layer assembly is prevented; making the structure of this utility model simple, easy to manufacture and assemble, and able to meet the requirements of high dirt holding capacity. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the present invention from a top view.

[0014] Figure 2 This is a structural schematic diagram of the present invention from a lower perspective;

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 4 This is a schematic diagram of the filter layer assembly in this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the lower shell in this utility model. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings. Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The directional terms such as left, center, right, top, and bottom in the embodiments of the present invention are only relative concepts or referenced to the normal use state of the product, and should not be considered restrictive.

[0019] First embodiment:

[0020] An oil suction filter for a dual-motor hybrid transmission in commercial vehicles, combined with Figure 1 , Figure 2 and Figure 3 As shown, the assembly includes an upper shell 1 and a lower shell 2 that are connected to each other, forming a filter chamber between them. The upper shell 1 and the lower shell 2 are respectively provided with an outlet 11 and an inlet 22. A filter layer assembly 4 is provided inside the filter chamber to separate the upper and lower filter chambers. The periphery of the filter layer assembly 4 is sealed and fixed within the joint 100 between the upper shell 1 and the lower shell 2. The filter layer assembly 4 includes corrugated filter paper 41 forming a flat structure. The joint 100 corresponds to the lower part of the filter layer assembly 4. The joint 100 between the upper shell 1 and the lower shell 2 has a rectangular structure. The filter layer assembly 4 also includes a mesh frame 42 that provides fixed support for the filter paper 41. The mesh frame 42 is integrated with the inner ring of a mounting ring 43 around its periphery. The mounting ring 43 is located at the lower part of the flat structure and is clamped between the joint 100 between the upper shell 1 and the lower shell 2, sealing it with the upper shell 1 or the lower shell 2. The mesh frame 42 includes parallel... Several ribs are provided on the filter paper 41, with the ends of the ribs extending to and integrally connected to the mounting ring 43. Support columns 101 are respectively provided in the upper housing 1 and the lower housing 2 for supporting and limiting the upper and lower surfaces of the filter layer assembly 4. The support columns 101 are close to or attached to the corresponding surfaces of the filter layer assembly 4, and cooperate with the butt joint 100 and the support columns 101 to prevent the front and back of the filter layer assembly 4 from being misaligned. A boss 26 protruding into the filter cavity is provided on the bottom wall of the lower housing 2. A downwardly extending ridge 411 is fixedly provided on the bottom surface of the filter layer assembly 4. The boss 26 and the ridge 411 are arranged sequentially along the width direction of the rectangular structure of the butt joint 100 and are symmetrical about the center of the rectangular structure of the butt joint 100. The top surface of the boss 26 is higher than the bottom surface of the ridge 411. When the filter layer assembly 4 rotates horizontally by 180° around its center, the lower end of the ridge 411 interferes with the boss 26.

[0021] In this design, a groove 21 is formed on the outer surface of the lower housing 2 at the position corresponding to the protrusion, thereby ensuring that the bottom wall thickness of the lower housing 2 remains unchanged. A magnet 3 is fixedly installed in the groove 21. The magnet 3 can be snapped or glued into the groove 21, and impurities in the oil are adsorbed by the magnet 3, further filtering the oil. In addition, to facilitate the fixed installation of this utility model in the gearbox oil pan, fixing ear plates 12 are integrally provided on the opposite side walls of the upper housing 1, and support legs 23 are integrally provided on the bottom wall of the lower housing 2. To prevent the top wall of the upper housing 1 from deforming after injection molding, the longitudinal direction of the rectangular structure of the butt joint 100 is set along its left and right directions. The outlet 11 is located on the left side of the upper housing 1. The top wall of the upper housing 1 is outwardly arc-shaped, and the left side height of the top wall of the upper housing 1 is higher than its right side height.

[0022] During assembly, combine Figure 3 , Figure 4 and Figure 5 As shown, since the mounting ring 43 is located at the lower part of the flat structure, and the upper housing 1 and the lower housing 2 have support columns 101 for supporting the filter layer assembly 4 at the corresponding positions, when the filter layer assembly 4 is installed in the correct position, the support columns 101 are close to or in contact with the filter layer assembly 4. This means that when the filter layer assembly 4 is upside down, the filter layer assembly 4 will interfere with the support columns 101; when the filter layer assembly 4 is upside down, the boss 26 and the protrusion 411 will interfere, thereby ensuring that the filter layer assembly 4 can be assembled between the upper housing 1 and the lower housing 2 in the correct posture.

[0023] Second embodiment:

[0024] Other technical features are the same as in the first embodiment, such as... Figure 2 and Figure 3 As shown, the liquid inlet 22 is located in the middle of the bottom wall of the lower housing 2, and the boss 26 and the protrusion 411 are located on both sides of the liquid inlet 22.

[0025] Third embodiment:

[0026] Other technical features are the same as in the second embodiment, such as... Figure 2 As shown, the width direction of the rectangular structure of the butt joint 100 is set along its front-to-back direction. The protrusion 411 and the boss 26 are respectively biased to the left and right sides of the liquid inlet 22. A second boss 27 is set on the bottom wall of the lower housing 2 at the right side of the protrusion 411. A second groove 24 is formed on the outer surface of the lower housing 2 at the position corresponding to the second boss 27. A second magnet 25 is fixedly set in the second groove 24. The second magnet 25 and the magnet 3 are respectively located on the front and back sides of the liquid inlet 22. For ease of production and assembly, the second boss 27, the second groove 27 and the second magnet 25 are the same as the specifications of the boss 26, the groove 21 and the magnet 3.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An oil suction filter for a dual-motor hybrid transmission in a commercial vehicle, comprising an upper housing and a lower housing that are joined together to form a filter chamber between them, wherein the upper housing and the lower housing are respectively provided with an outlet and an inlet, and a filter layer assembly for separating the upper and lower filter chambers is provided inside the filter chamber, the filter layer assembly being sealed and fixedly disposed within the joint between the upper housing and the lower housing, characterized in that: The joint between the upper and lower shells is rectangular. The filter layer assembly includes corrugated filter paper and forms a flat structure. The joint corresponds to the lower part of the filter layer assembly. Support columns for supporting and limiting the upper and lower surfaces of the filter layer assembly are respectively provided in the upper and lower shells. A boss protruding into the filter cavity is provided on the bottom wall of the lower shell. A downwardly extending ridge is fixedly provided on the bottom surface of the filter layer assembly. The boss and ridge are arranged sequentially along the width of the rectangular structure of the joint and are symmetrical about the center of the rectangular structure of the joint. The top surface of the boss is higher than the bottom surface of the ridge. When the filter layer assembly is rotated horizontally by 180° around its center, the lower end of the ridge interferes with the boss.

2. The oil filter for a dual-motor hybrid transmission in a commercial vehicle according to claim 1, characterized in that: A groove is formed on the outer surface of the lower housing at the position corresponding to the protrusion, and a magnet is fixedly installed in the groove.

3. The oil filter for a dual-motor hybrid transmission in a commercial vehicle according to claim 2, characterized in that: The liquid inlet is located in the middle of the bottom wall of the lower shell, and the boss and the ridge are located on both sides of the liquid inlet.

4. The oil filter for a dual-motor hybrid transmission in a commercial vehicle according to claim 3, characterized in that: The width of the rectangular structure of the joint is set along its front-to-back direction. The protrusion and the boss are respectively biased to the left and right sides of the liquid inlet. A second boss is set on the bottom wall of the lower shell at the position of the right side of the protrusion. A second groove is formed on the outer surface of the lower shell corresponding to the position of the second boss. A second magnet is fixedly set in the second groove. The second magnet and the first magnet are respectively located on the front and back sides of the liquid inlet.

5. The oil filter for a dual-motor hybrid transmission in a commercial vehicle according to claim 1, characterized in that: The filter layer assembly also includes a mesh frame that supports the filter paper. The mesh frame is integrated with the inner ring of the mounting ring. The mounting ring is located at the bottom of the flat structure and is clamped between the mating seam of the upper and lower housings and sealed to the upper or lower housing.

6. The oil filter for a dual-motor hybrid transmission in a commercial vehicle according to claim 5, characterized in that: The mesh frame includes several ribs arranged side by side on the filter paper, with the ends of the ribs extending to and integrally connected to the mounting ring.

7. The oil filter for a dual-motor hybrid transmission in a commercial vehicle according to claim 1, characterized in that: The longitudinal direction of the rectangular structure of the joint is set along its left and right directions. The liquid outlet is located on the left side of the upper shell. The top wall of the upper shell is outwardly arc-shaped, and the left side of the top wall of the upper shell is higher than its right side.

8. The oil filter for a dual-motor hybrid transmission in a commercial vehicle according to claim 1, characterized in that: Fixed lugs are integrally provided on the opposite side walls of the upper shell, and support legs are integrally provided on the bottom wall of the lower shell.

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