Engine oil pan gasket with filter screen
By integrating a filter structure into the engine oil pan gasket, the problem of oil pre-filtration in existing technologies is solved, enabling pre-filtration of the oil, ensuring that the oil pump filter is not contaminated, and extending the service life of the oil pump.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU CHANGNIANFA POWER MASCH CO LTD
- Filing Date
- 2024-08-14
- Publication Date
- 2026-06-09
AI Technical Summary
Existing engine oil pan gaskets cannot filter impurities before the oil is drawn in, which makes the oil pump filter screen easy to damage and prevents the oil from being pre-filtered.
Design an engine oil pan gasket with a built-in filter, including an outer ring gasket and an embedded filter. The oil is pre-filtered by a limiting clip and a suction cup perforated seat, ensuring that the oil is filtered before being drawn in and avoiding contamination of the oil pump filter.
This allows the engine oil to be filtered before it is drawn in, avoiding contamination of the oil pump filter and improving the quality of the engine oil and the service life of the oil pump.
Smart Images

Figure CN224339054U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a gasket, specifically an engine oil pan gasket with a built-in filter, belonging to the field of engine gasket technology. Background Technology
[0002] The engine oil pan is a sealed outer shell located at the bottom of the engine, serving as an oil reservoir within the crankcase. It contains an oil baffle to prevent oil surface sloshing during bumps and vibrations, and facilitates the settling of impurities in the lubricating oil. A dipstick is mounted on the side for checking the oil level. An oil suction cup is installed inside the oil pan, allowing the oil pump to draw oil out of the pan.
[0003] The oil pan is connected to the engine block by bolts. To ensure a tight seal at the connection, a gasket is often placed at the connection point. For example, in the prior art, an automotive oil pan sealing gasket disclosed in announcement number CN215861657U is designed to achieve torque sealing by fitting the gasket body onto the bolt and then screwing the bolt onto the oil pan. The gasket body then provides an effective seal. In other words, the gasket disclosed in the prior art can provide a good seal. However, in actual use, since the engine oil in the oil pan contains certain impurities, when the oil pump draws the oil out of the pan, it is often necessary to rely on the filter screen of the engine oil pump to filter the impurities in the oil. Prolonged use can easily damage the oil pump. Although some machines are equipped with oil filters, they cannot filter the oil before it is drawn in, meaning they cannot prevent the oil pump filter screen from being contaminated. Utility Model Content
[0004] The purpose of this utility model is to provide an engine oil pan gasket with a built-in filter in order to solve at least one of the above-mentioned technical problems.
[0005] The present invention achieves the above objectives through the following technical solution: an engine oil pan gasket with a built-in filter, comprising a gasket body, an engine block and an oil pan respectively provided on both sides of the gasket body, an oil suction cup installed inside the oil pan, and a conveying pipe of the oil suction cup passing through the gasket body, the gasket body comprising an outer ring gasket and a filter, the filter being connected to the inner side of the outer ring gasket;
[0006] One side of the outer ring gasket is connected to a limit clip, and the limit clip is located at the connection between the filter screen and the outer ring gasket. The filter screen is connected to a suction cup perforated seat, and an oil suction cup delivery pipe is installed inside the suction cup perforated seat. The gasket body is placed between the engine block and the oil pan.
[0007] As a further improvement of this utility model: the outer ring gasket has a number of perforations, which are evenly distributed and correspond one-to-one with the connection holes of the engine block and the oil pan.
[0008] As a further improvement of this utility model: the outer ring gasket is attached to one side of the oil pan and connected to a limiting strip, the outer side of which is arc-shaped.
[0009] As a further embodiment of this utility model: the suction cup perforation seat includes an outer ring seat, a bottom retaining ring, and a movable inner ring. The movable inner ring is movably held inside the outer ring seat and is fixedly connected to the lower end of the inner ring of the outer ring seat.
[0010] As a further improvement of this utility model, the opposite sides of the bottom ring and the movable inner ring are both set as mating slopes.
[0011] As a further improvement of this utility model, the lower end of the inner side of the movable inner ring is provided with a friction textured inner wall.
[0012] The beneficial effects of this utility model are as follows: The gasket body of this utility model includes an outer ring gasket and a filter screen. By placing the gasket body between the engine block and the oil pan, it is possible to pre-filter the engine oil, that is, filter the engine oil before it is drawn in, thus preventing contamination of the oil pump filter screen. One side of the outer ring gasket is connected to a limiting clip strip, and the limiting clip strip is located at the connection between the filter screen and the outer ring gasket. By locking the limiting clip strip at the installation position of the outer ring gasket, it is possible to ensure precise positioning and installation of the outer ring gasket. The filter screen is connected to a suction cup perforated seat, and the oil suction cup delivery pipe passes through the suction cup perforated seat. The suction cup perforated seat facilitates the passage of the oil suction cup delivery pipe. Through the function of the filter screen, the engine oil can be filtered before it is drawn in, thus preventing contamination of the oil pump filter screen. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the upper side structure of the gasket body of this utility model;
[0014] Figure 2 This is a schematic diagram of the lower side structure of the gasket body of this utility model;
[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the outer ring gasket of this utility model;
[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the suction cup perforated seat of this utility model;
[0017] Figure 5 This is a schematic diagram of the gasket body installation structure of this utility model.
[0018] In the diagram: 1. Outer ring gasket, 11. Perforation, 12. Limiting strip, 2. Filter screen, 3. Suction cup perforated seat, 31. Outer ring seat, 32. Bottom retaining ring, 33. Movable inner ring, 34. Connecting slope, 35. Friction textured inner wall, 4. Engine block, 5. Oil suction cup, 6. Oil pan. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1
[0020] like Figures 1 to 5 As shown, an engine oil pan gasket with a built-in filter includes a gasket body, an engine block 4 and an oil pan 6 are respectively provided on both sides of the gasket body, an oil suction cup 5 is installed in the oil pan 6, and the delivery pipe of the oil suction cup 5 passes through the gasket body. The gasket body includes an outer ring gasket 1 and a filter 2, and the filter 2 is connected to the inner side of the outer ring gasket 1.
[0021] One side of the outer ring gasket 1 is connected to a limiting clip 12, and the limiting clip 12 is located at the connection between the filter screen 2 and the outer ring gasket 1. The filter screen 2 is connected to a suction cup perforated seat 3, and the oil suction cup 5 is conveyed through the suction cup perforated seat 3. By placing the gasket body between the engine block 4 and the oil pan 6, the oil can be filtered in advance, that is, filtered before the oil is sucked in, so as not to contaminate the oil pump filter screen. It can be locked in place at the installation position of the outer ring gasket 1 by the limiting clip 12, which can ensure the precise positioning and installation of the outer ring gasket 1. The suction cup perforated seat 3 can facilitate the passage of the oil suction cup 5 conveying pipe. Example 2
[0022] In addition to all the technical features included in Embodiment 1, this embodiment also includes:
[0023] The outer ring gasket 1 has several through holes 11, which are evenly distributed and correspond one-to-one with the connection holes of the engine block 4 and the oil pan 6. This ensures that when the gasket body is placed between the connection points of the engine block 4 and the oil pan 6, the bolts used to connect the engine block 4 and the oil pan 6 can pass through the through holes 11, thus ensuring the gasket body is fixed in its installation position.
[0024] The outer ring gasket 1 is attached to one side of the oil pan 6 and connected to the limiting strip 12. The outer side of the limiting strip 12 is arc-shaped. When the gasket body is installed, the arc-shaped outer side of the limiting strip 12 is attached to the edge bend of the oil pan 6, which can ensure a tight fit at the attachment point and ensure the accurate placement of the gasket body. At the same time, it can also play a certain sealing role to prevent the engine oil in the oil pan 6 from seeping into the connection between the engine block 4 and the oil pan 6. Example 3
[0025] In addition to all the technical features included in Embodiment 1, this embodiment also includes:
[0026] The suction cup perforation seat 3 includes an outer ring seat 31, a bottom retaining ring 32, and a movable inner ring 33. The movable inner ring 33 is movably held inside the outer ring seat 31 and is fixedly connected to the lower end of the inner ring of the outer ring seat 31. When the conveying pipe of the oil suction cup 5 is inserted into the movable inner ring 33, the upper end connection of the conveying pipe can press the movable inner ring 33 downward, thereby allowing the lower end of the movable inner ring 33 to be pushed inward by the bottom retaining ring 32. This ensures that the movable inner ring 33 is securely fitted onto the conveying pipe, thus ensuring a fixed connection between the conveying pipe of the oil suction cup 5 and the suction cup perforation seat 3.
[0027] The bottom retaining ring 32 and the movable inner ring 33 are both provided with a mating slope 34 on their opposite sides. When the movable inner ring 33 is not pressed down, the mating slope 34 of the bottom retaining ring 32 and the movable inner ring 33 are stacked together and will not form an outward convex shape, so as to facilitate the installation of the conveying pipe. When the movable inner ring 33 is pressed down, the two mating slopes 34 are misaligned, which can achieve the locking of the conveying pipe.
[0028] The lower end of the inner side of the movable inner ring 33 is provided with a friction textured inner wall 35 to ensure that the movable inner ring 33 is securely fitted onto the oil suction cup 5's delivery pipe. The friction texture further enhances the friction of the fitted area, thus preventing loosening.
[0029] Working principle: The gasket body is placed at the connection between the engine block 4 and the oil pan 6. The arc-shaped outer side of the limiting clip 12 is placed on the edge bend of the oil pan 6. The delivery pipe of the oil suction cup 5 is passed through the suction cup perforation seat 3. The upper end connection of the delivery pipe can press the movable inner ring 33 downward, and the lower end of the movable inner ring 33 can be pushed inward by the bottom clip ring 32. That is, the movable inner ring 33 can be firmly fitted on the delivery pipe, which can ensure that the delivery pipe of the oil suction cup 5 and the suction cup perforation seat 3 form a fixed connection. The bolts for connecting the engine block 4 and the oil pan 6 pass through the perforation 11, which can ensure the fixed installation position of the gasket body.
[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An engine oil pan gasket with a built-in filter, comprising a gasket body, wherein an engine block (4) and an oil pan (6) are respectively disposed on both sides of the gasket body, an oil suction cup (5) is disposed inside the oil pan (6), and the conveying pipe of the oil suction cup (5) penetrates the gasket body, characterized in that: The gasket body includes an outer ring gasket (1) and a filter screen (2), wherein the filter screen (2) is connected to the inner side of the outer ring gasket (1); One side of the outer ring gasket (1) is connected to a limiting clip (12), and the limiting clip (12) is located at the connection between the filter screen (2) and the outer ring gasket (1). The filter screen (2) is connected to a suction cup perforated seat (3), and the oil suction cup (5) is conveyed through the suction cup perforated seat (3).
2. The engine oil pan gasket with integrated filter according to claim 1, characterized in that: The outer ring gasket (1) has a number of perforations (11) which are evenly distributed and correspond one-to-one with the connection holes of the engine block (4) and the oil pan (6).
3. The engine oil pan gasket with integrated filter according to claim 2, characterized in that: The outer ring gasket (1) is attached to one side of the oil pan (6) and connected to a limiting strip (12). The outer side of the limiting strip (12) is arc-shaped.
4. The engine oil pan gasket with integrated filter according to claim 1, characterized in that: The suction cup perforated seat (3) includes an outer ring seat (31), a bottom retaining ring (32), and a movable inner ring (33). The movable inner ring (33) is movably held inside the outer ring seat (31) and is fixedly connected to the lower end of the inner ring of the outer ring seat (31).
5. The engine oil pan gasket with integrated filter according to claim 4, characterized in that: The bottom ring (32) and the movable inner ring (33) are both configured with a mating slope (34) on opposite sides.
6. The engine oil pan gasket with integrated filter according to claim 4, characterized in that: The lower end of the inner side of the movable inner ring (33) is provided with a friction textured inner wall (35).