A metal gasket for sealing an automobile oil pan

Abstract

This utility model discloses a sealing metal gasket for automotive oil pans, belonging to the field of oil pan sealing. It includes a gasket body and a sealing assembly. The sealing assembly includes a sealing groove formed on the inner wall of the gasket body. An oil-blocking plate, oil-absorbing strips, and an oil-sealing plate are respectively arranged on the inner wall of the sealing groove. Multiple oil-absorbing strips are fixedly connected to the inner wall of the oil-blocking plate, and the outer walls of the multiple oil-absorbing strips abut against the inner wall of the oil-sealing plate. Through the coordinated use of these devices, the sealing performance of the metal gasket during use is improved, reducing the possibility of gasket deformation after long-term use due to factors such as bumps. The combination of the oil-blocking plate, multiple oil-absorbing strips, and the oil-sealing plate improves the overall sealing performance through a labyrinth seal. Furthermore, the multiple nitrile rubber oil-absorbing strips, when a small amount of oil enters the labyrinth seal, come into contact with the oil-absorbing strips, causing the oil-absorbing strips to expand laterally and block the oil, further improving the overall sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of oil pan sealing technology, specifically a metal gasket for sealing an automotive oil pan. Background Technology

[0002] Oil pan seals are key sealing structures or technologies used in internal combustion engines or power equipment such as automobiles and construction machinery to prevent the leakage of lubricating oil from the oil pan. Their core function is to ensure that the connection between the oil pan and the engine block (or crankcase) is completely sealed, preventing engine oil from leaking into the external environment, while also preventing dust, moisture and other impurities from entering the oil pan and contaminating the engine oil.

[0003] An investigation revealed that a utility model patent (publication number: CN215370064U) discloses an oil pan gasket, comprising a self-lubricating film and a gasket body. The gasket body includes a metal frame, an elastic sealing ring, and a positioning post. The metal frame has a square frame structure, with multiple frame mounting holes spaced apart along its circumference. The elastic sealing ring surrounds the inner circumference of the metal frame, with a first and second sealing rib spaced apart on one side surface, and a third and fourth sealing rib spaced apart on the other side surface. The positioning post is located on one side surface of the metal frame and is offset from the frame mounting holes. The self-lubricating film covers the outer circumference of the gasket body. This utility model ensures accurate installation of the oil pan gasket and avoids the risk of cutting edges from the frame mounting holes of the metal frame.

[0004] Although the aforementioned patent improves the sealing performance of the gasket body during use and enhances installation efficiency and sealing effect through the arrangement of components such as self-lubricating film, gasket, and multiple sealing ribs, the multiple sealing ribs of this component are prone to deformation due to bumps and vibrations during daily car driving after installation, thus reducing the sealing performance of the gasket.

[0005] Therefore, this utility model provides a sealing metal gasket for automotive oil pan to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This invention provides a sealing metal gasket for an automotive oil pan, aiming to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A sealing metal gasket for an automotive oil pan includes a gasket body and a sealing assembly, wherein the sealing assembly includes a sealing groove formed in the inner side wall of the gasket body.

[0011] The inner wall of the sealing groove is provided with an oil-blocking plate, an oil-absorbing strip, and an oil-sealing plate. Multiple oil-absorbing strips are fixedly connected to the inner wall of the oil-blocking plate, and the outer walls of the multiple oil-absorbing strips abut against the inner wall of the oil-sealing plate. The oil-blocking plate is fixedly connected to the inner bottom of the sealing groove, and the outer wall of the oil-sealing plate abuts against the inner side wall of the sealing groove. A buffer assembly is provided inside the gasket body.

[0012] As a preferred technical solution of this application, the buffer assembly includes a damping spring fixedly connected to the bottom end of the pad body, and the number of damping springs is several, and the outer wall of each damping spring is coated with an anti-rust coating.

[0013] As a preferred technical solution of this application, a buffer strip is fixedly connected to one end of the plurality of damping springs away from the bottom end of the gasket body, and the inner and outer walls of the buffer strip are coated with an oleophobic coating.

[0014] As a preferred technical solution of this application, the outer surface of the gasket body is provided with a mounting groove, and the number of mounting grooves is several, and the multiple mounting grooves are symmetrically opened along the center of the gasket body.

[0015] As a preferred technical solution of this application, a nitrile rubber pad is fixedly connected to the outer wall of the buffer pad at the mounting groove, and the number of nitrile rubber pads is several, and the outer wall of the nitrile rubber pads is coated with an anti-oxidation coating.

[0016] As a preferred technical solution of this application, a polyurethane rubber gasket is fixedly connected to the outer wall of the gasket body away from the buffer strip. The number of polyurethane rubber gaskets is several, and the multiple polyurethane rubber gaskets are evenly arranged on the opposite sides of the two mounting grooves.

[0017] As a preferred technical solution of this application, a pressing strip is fixedly connected to the outer surface of the gasket body on one side of the polyurethane rubber gasket, and the number of pressing strips is several.

[0018] As a preferred technical solution of this application, the gasket body has an oil seal groove at the inner bottom end of the mounting groove, and an oil seal ring is engaged at the inner bottom end of the oil seal groove.

[0019] As a preferred technical solution of this application, the gasket body is installed in the mounting groove with connecting bolts, the number of connecting bolts is several, and the outer wall of the connecting bolts is coated with an anti-rust coating.

[0020] As a preferred technical solution of this application, the outer wall of the gasket body is coated with an anti-rust coating and an anti-corrosion coating respectively.

[0021] (III) Beneficial Effects

[0022] By designing the sealing components, the sealing performance of the metal gasket can be improved through the cooperation of various parts, reducing the risk of gasket deformation after long-term use due to factors such as bumps. The combination of the oil baffle plate, multiple oil-absorbing strips, and the oil-sealing plate can improve the overall sealing performance through a labyrinth seal. Furthermore, the multiple nitrile rubber oil-absorbing strips, when a small amount of oil enters the labyrinth seal, comes into contact with the oil-absorbing strips, causing the oil-absorbing strips to expand laterally and block the oil, further improving the overall sealing performance. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure of a sealing metal gasket for an automotive oil pan.

[0024] Figure 2 This is a schematic diagram of the oil-blocking plate in a sealing metal gasket for an automotive oil pan.

[0025] Figure 3 for Figure 2 Schematic diagram of the structure at point A;

[0026] Figure 4 This is a schematic diagram of the oil-absorbing strip in a sealing metal gasket for an automotive oil pan.

[0027] Figure 5 This is a schematic diagram of the internal structure of the oil seal groove in a metal gasket for sealing an automotive oil pan.

[0028] In the picture:

[0029] 1. Gasket body; 2. Sealing groove; 3. Oil blocking plate; 4. Oil suction strip; 5. Oil sealing plate; 6. Damping spring; 7. Buffer pad; 8. Mounting groove; 9. Nitrile rubber gasket; 10. Polyurethane rubber gasket; 11. Pressing strip; 12. Oil seal groove; 13. Oil seal ring; 14. Connecting bolt. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0031] This utility model provides a sealing metal gasket for an automotive oil pan, such as... Figures 1-5 As shown, the automotive oil pan sealing metal gasket includes a gasket body 1 and a sealing assembly, the sealing assembly including a sealing groove 2 formed in the inner sidewall of the gasket body 1;

[0032] The inner wall of the sealing groove 2 is provided with an oil-blocking plate 3, an oil-absorbing strip 4 and an oil-sealing plate 5 respectively. Multiple oil-absorbing strips 4 are fixedly connected to the inner wall of the oil-blocking plate 3, and the outer wall of the multiple oil-absorbing strips 4 abuts against the inner wall of the oil-sealing plate 5. The oil-blocking plate 3 is fixedly connected to the inner bottom of the sealing groove 2, and the outer wall of the oil-sealing plate 5 abuts against the inner side wall of the sealing groove 2. A buffer assembly is provided inside the gasket body 1.

[0033] The buffer assembly includes a damping spring 6 fixedly connected to the bottom of the inner end of the pad body 1. There are several damping springs 6, and the outer wall of each damping spring 6 is coated with an anti-rust coating.

[0034] Multiple damping springs 6 are fixedly connected to a buffer strip 7 at one end away from the bottom of the inner end of the pad body 1. The inner and outer walls of the buffer strip 7 are coated with an oleophobic coating.

[0035] The outer surface of the gasket body 1 is provided with a mounting groove 8. There are several mounting grooves 8, and multiple mounting grooves 8 are symmetrically opened along the center of the gasket body 1.

[0036] A nitrile rubber pad 9 is fixedly connected to the outer wall of the buffer pad 7 at the mounting groove 8. There are several nitrile rubber pads 9, and the outer wall of each nitrile rubber pad 9 is coated with an anti-oxidation coating.

[0037] A polyurethane rubber gasket 10 is fixedly connected to the outer wall of the gasket body 1 away from the buffer strip 7. There are several polyurethane rubber gaskets 10, and the multiple polyurethane rubber gaskets 10 are evenly arranged on the opposite sides of the two mounting grooves 8.

[0038] A pressing strip 11 is fixedly connected to one side of the polyurethane rubber gasket 10 on the outer surface of the gasket body 1. There are several pressing strips 11.

[0039] Specifically, the sealing components, through their coordinated operation, improve the stable sealing performance of the metal gasket during use, preventing a decrease in sealing effectiveness due to factors such as vibration over long-term use. The sealing groove 2 inside the gasket body 1 effectively houses the oil-blocking plate 3, multiple oil-absorbing strips 4, and the oil-sealing plate 5. The oil-blocking plate 3, in contact with the inside of the oil pan, uses its material properties to prevent oil overflow. The labyrinth seal formed by these three components prevents oil overflow and maintains a good sealing effect. When oil overflows through the small gaps above the oil-blocking plate 3, it comes into contact with the multiple oil-absorbing strips 4. The nitrile rubber material of the oil-absorbing strips 4 expands upon contact with oil. This design effectively blocks the gaps, preventing further oil leakage. The damping spring 6 and buffer pad 7 within the buffer assembly continuously enhance the contact strength between the buffer pad 7 and the oil pan after installation, thanks to the material properties of the damping spring 6. This further improves the sealing effect when the vehicle shakes or vibrates. The oleophobic coating on its outer wall prevents oil stains from corroding it and reducing its material properties. The cooperation of the nitrile rubber gasket 9, polyurethane rubber gasket 10, and multiple pressing strips 11 improves the connection stability between the outer surface of the gasket body 1 and the oil pan. The material properties of expanding upon contact with oil reduce oil leakage and improve the sealing performance after installation.

[0040] The gasket body 1 has an oil seal groove 12 at the inner bottom end of the mounting groove 8, and an oil seal ring 13 is engaged at the inner bottom end of the oil seal groove 12.

[0041] The gasket body 1 is located in the mounting groove 8 and is equipped with connecting bolts 14. There are several connecting bolts 14, and the outer wall of the connecting bolts 14 is coated with an anti-rust coating.

[0042] The outer wall of the gasket body 1 is coated with an anti-rust coating and an anti-corrosion coating, respectively.

[0043] Specifically, the mounting groove 8 and the connecting bolts 14 installed inside it can be quickly and stably connected to the external oil pan, improving the stability of the gasket during use. The oil seal groove 12 and oil seal ring 13 inside the mounting groove 8 can improve the sealing performance of the mounting groove 8 after installation, further improving the overall sealing effect of the gasket body 1.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A metallic gasket for sealing an automobile oil pan, comprising a gasket body (1) and a sealing assembly, characterized in that: The sealing assembly includes a sealing groove (2) formed in the inner sidewall of the gasket body (1); The inner wall of the sealing groove (2) is provided with an oil-blocking plate (3), an oil-absorbing strip (4) and an oil-sealing plate (5). Multiple oil-absorbing strips (4) are fixedly connected to the inner wall of the oil-blocking plate (3), and the outer walls of multiple oil-absorbing strips (4) abut against the inner wall of the oil-sealing plate (5). The oil-blocking plate (3) is fixedly connected to the inner bottom end of the sealing groove (2), and the outer wall of the oil-sealing plate (5) abuts against the inner side wall of the sealing groove (2). The gasket body (1) is provided with a buffer assembly inside.

2. The metallic gasket for sealing an oil pan of an automobile according to claim 1, wherein: The buffer assembly includes a damping spring (6) fixedly connected to the bottom of the inner end of the pad body (1). There are several damping springs (6), and the outer wall of each damping spring (6) is coated with an anti-rust coating.

3. The metallic gasket for sealing an oil pan of an automobile according to claim 2, wherein: One end of each of the damping springs (6) away from the bottom of the inner end of the pad body (1) is fixedly connected to a buffer strip (7), and the inner and outer walls of the buffer strip (7) are coated with an oleophobic coating.

4. The automotive oil pan sealing metal gasket according to claim 3, characterized in that: The outer surface of the gasket body (1) is provided with a mounting groove (8), and there are several mounting grooves (8), which are symmetrically opened along the center of the gasket body (1).

5. The automotive oil pan sealing metal gasket according to claim 4, characterized in that: The outer wall of the buffer pad (7) is fixedly connected to the mounting groove (8) with a nitrile rubber pad (9). There are several nitrile rubber pads (9), and the outer wall of each nitrile rubber pad (9) is coated with an anti-oxidation coating.

6. The automotive oil pan sealing metal gasket according to claim 5, characterized in that: A polyurethane rubber gasket (10) is fixedly connected to the outer wall of the gasket body (1) away from the buffer strip (7). The number of polyurethane rubber gaskets (10) is several, and the multiple polyurethane rubber gaskets (10) are evenly arranged on the opposite sides of the two mounting grooves (8).

7. A sealing metal gasket for an automotive oil pan according to claim 6, characterized in that: The outer surface of the gasket body (1) is fixedly connected to a pressing strip (11) on one side of the polyurethane rubber gasket (10), and the number of pressing strips (11) is several.

8. The automotive oil pan sealing metal gasket according to claim 4, characterized in that: The gasket body (1) has an oil seal groove (12) at the inner bottom end of the mounting groove (8), and an oil seal ring (13) is engaged at the inner bottom end of the oil seal groove (12).

9. A sealing metal gasket for an automotive oil pan according to claim 8, characterized in that: The gasket body (1) is located in the mounting groove (8) and is equipped with connecting bolts (14). There are several connecting bolts (14), and the outer wall of the connecting bolts (14) is coated with an anti-rust coating.

10. A sealing metal gasket for an automotive oil pan according to claim 9, characterized in that: The outer wall of the gasket body (1) is coated with an anti-rust coating and an anti-corrosion coating, respectively.

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