Oil pan sealing gasket with double sealing ribs

Abstract

The utility model relates to the technical field of oil pans of automobile engines, in particular to an oil pan sealing gasket with double sealing ribs, which comprises a first sealing gasket and a second sealing gasket, the first sealing gasket and the second sealing gasket are of an inside-outside distribution structure, and the connecting position of the first sealing gasket and the second sealing gasket is fixedly adhered through resin adhesive. A sealing gasket hole is formed in the surface of the second sealing gasket, the position, close to the sealing gasket hole, of the first sealing gasket is filled with a reinforcing layer, the reinforcing layer is of a grid structure, the first sealing gasket is sequentially composed of an outer layer and an inner layer, and the outer layer wraps the inner layer. According to the scheme, the structure of the inner sealing gasket and the outer sealing gasket is adopted, a redundant sealing layer is formed through the two protruding sealing ribs, when one sealing rib loses efficacy due to aging, deformation or temperature fluctuation, the other sealing rib can still maintain effective sealing, the oil leakage risk is greatly reduced, the joint of the sealing gaskets is bonded and fixed through resin glue, it is guaranteed that pressing force is evenly distributed, and the service life of the sealing gasket is prolonged. And the device is particularly suitable for uneven or slightly deformed contact surfaces.

Description

Technical Field

[0001] This utility model relates to the field of automotive engine oil pan technology, and in particular to an oil pan sealing gasket with double sealing ribs. Background Technology

[0002] The engine oil pan, also known as the oil pan, is an important component of the engine lubrication system. Located at the bottom of the engine, it is mainly used to store and recycle lubricating oil (engine oil). The main function of the oil pan is to store and recycle lubricating oil. When the engine is running, the oil pump draws the oil from the oil pan, filters it through the oil filter, and delivers it to various friction parts of the engine for lubrication. The lubricated oil flows back to the oil pan under the action of gravity, forming a circulation system. In addition, the oil pan also has a heat dissipation function. Through heat exchange with the outside air, it helps to lower the temperature of the engine oil, thereby protecting the engine from overheating damage.

[0003] The engine oil pan is located at the bottom of the engine and is mainly used to store engine oil. The engine oil pan and the engine block usually need to be sealed with a gasket. Traditional oil pan gaskets are usually made of pure rubber. This type of gasket has poor assembly precision. The oil pan and the engine block are rigidly connected by bolts. Engine vibration can cause the gasket to move, resulting in poor sealing effect. This can easily cause oil leakage at the oil pan gasket and lead to seal failure. The oil pan gasket does not play a role in shock absorption and noise reduction. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned shortcomings in the prior art and to propose a double-sealing rib oil pan sealing gasket.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a double-sealed oil pan gasket, including a first gasket and a second gasket. The first and second gaskets are distributed internally and externally. The connection between the first and second gaskets is fixed by adhesive resin. The surface of the second gasket has a gasket hole. The position of the first gasket near the gasket hole is filled with a reinforcing layer, which is a grid structure.

[0007] The sealing gasket is composed of an outer layer and an inner layer, with the outer layer wrapping around the inner layer.

[0008] The outer layer is further divided into a base layer, an anti-aging layer, and a corrosion-resistant layer. The surface of the base layer is coated with an anti-aging layer, and the surface of the anti-aging layer is coated with a corrosion-resistant layer.

[0009] In detail, both the reinforcing layer and the base layer are made of rubber material.

[0010] In detail, the anti-aging layer is made of a polyurethane thin-film coating material.

[0011] In detail, the corrosion-resistant layer is made of polyurea thin-film coating material.

[0012] In detail, the inner layer is made of stainless steel and has a thin sheet structure.

[0013] In detail, a number of teeth are distributed on the sidewall of the inner layer, and the teeth are symmetrically distributed along both ends of the inner layer.

[0014] The design scheme proposed in this utility model has the following beneficial effects in application:

[0015] 1. This solution adopts a double sealing gasket structure (sealing gasket one and sealing gasket two), which forms a redundant sealing layer through two raised sealing ribs. When one sealing rib fails due to aging, deformation or temperature fluctuations, the other can still maintain an effective seal, greatly reducing the risk of oil leakage. The sealing gasket joints are fixed by resin adhesive to ensure uniform distribution of clamping force, which is especially suitable for uneven or slightly deformed contact surfaces. In addition, the perimeter of the sealing gasket hole is supported by a grid structure to enhance local pressure resistance. At the same time, the labyrinth design further optimizes the screw assembly support force. This dual protection mechanism can effectively compensate for material expansion differences, reduce changes in sealing gap, and extend service life under engine high temperature, vibration or thermal cycling conditions.

[0016] 2. As described in point 1, the sealing gasket adopts a metal and rubber composite structure: the inner layer is a thin stainless steel sheet, providing high-strength skeleton support to prevent deformation caused by bolt preload or vibration; the outer layer is wrapped with oil- and temperature-resistant AEM rubber, combined with a polyurethane anti-aging layer and a polyurea corrosion-resistant layer, which has elasticity, weather resistance and chemical stability. The symmetrical tooth structure on the inner sidewall enhances the interlocking and adhesion of the metal and rubber, improves the hole position accuracy and prevents installation misalignment. The high temperature resistance of the metal sheet and the durable elasticity of the rubber are combined to balance the rigidity and flexibility requirements of the sealing surface, ensuring long-term fit, especially suitable for sealing requirements under harsh working conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of one component of the sealing gasket of this utility model;

[0019] Figure 3 This is a schematic diagram of the outer layer structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the tooth distribution of this utility model.

[0021] In the diagram: 1. Sealing gasket one; 11. Sealing gasket two; 12. Sealing gasket hole; 13. Reinforcing layer; 101. Outer layer; 102. Inner layer; 1001. Base layer; 1002. Anti-aging layer; 1003. Corrosion resistant layer; 1021. Teeth. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-4 A double-sealing oil pan gasket includes a first gasket 1 and a second gasket 11. The first gasket 1 and the second gasket 11 are distributed internally and externally. The double gasket forms a redundant sealing layer through two raised sealing ribs. Even if one rib fails due to aging or deformation, the other rib can still maintain the sealing performance, significantly reducing the risk of oil leakage. The connection between the first gasket 1 and the second gasket 11 is fixed by adhesive resin. The pressure of the gasket on the oil pan and engine mating surface is more uniform, especially suitable for uneven or slightly deformed contact surfaces. The surface of the second gasket 11 has a gasket hole 12. The position of the first gasket 1 near the gasket hole 12 is filled with a reinforcing layer 13. The reinforcing layer 13 is a grid structure. The gasket hole 12 is locally reinforced. The area around the hole is supported by the reinforcing layer 13 with a grid structure. The grid structure is a labyrinth structure, which enhances the screw assembly support force at the hole position.

[0024] The sealing gasket 1 is composed of an outer layer 101 and an inner layer 102. The outer layer 101 wraps around the inner layer 102. The metal steel sheet provides a skeleton support, which greatly improves the rigidity and compressive strength of the sealing gasket and avoids deformation of the sealing gasket due to excessive bolt preload or engine vibration. The metal steel sheet can withstand the high temperature environment of the engine (above 100°C), reducing sealing failure caused by thermal expansion. The double sealing rib structure compensates for the difference in material expansion during cold and hot cycles, reducing the change in sealing gap caused by temperature changes. The metal steel sheet makes the sealing gasket easier to position and avoids poor sealing due to excessive stretching or offset during installation.

[0025] The outer layer 101 is further divided into a base layer 1001, an anti-aging layer 1002, and a corrosion-resistant layer 1003. The surface of the base layer 1001 is coated with an anti-aging layer 1002, and the surface of the anti-aging layer 1002 is coated with a corrosion-resistant layer 1003.

[0026] It should be further noted that both the reinforcing layer 13 and the base layer 1001 are made of rubber material. AEM rubber material has excellent oil resistance, temperature resistance and good compression set, which gives the rubber lasting elasticity. The double-layer dense padding structure of the inner and outer layers ensures that even if one layer fails due to aging or deformation, the other layer can still maintain the seal, significantly reducing the risk of oil leakage.

[0027] It should be further noted that the anti-aging layer 1002 is made of polyurethane thin-film coating material, which has good weather resistance, wear resistance and UV resistance.

[0028] It should be further noted that the corrosion-resistant layer 1003 is made of polyurea thin coating material. Polyurea coating has rapid curing, excellent physical properties and chemical corrosion resistance, and is suitable for occasions requiring corrosion protection.

[0029] It should be further noted that the inner layer 102 is made of stainless steel and has a thin sheet structure. The metal sheet provides a skeleton support, which greatly improves the rigidity and pressure resistance of the gasket and avoids deformation of the gasket due to excessive bolt preload or engine vibration. The composite structure of metal and rubber materials can balance elasticity and rigidity and maintain the sealing surface fit for a long time.

[0030] It should be further explained that a number of teeth 1021 are distributed on the side wall of the inner layer 102. The teeth 1021 are symmetrically distributed along both ends of the inner layer 102. The teeth 1021 can improve the contact ability between the inner layer 102 and the outer layer 101, forming a double-sided interlocking effect. In addition, they also have high strength and good flexibility, good adhesion to rubber materials, and higher hole accuracy of the sealing gasket.

[0031] Working principle: This solution adopts an inner and outer double sealing rib structure (sealing gasket 1 and sealing gasket 2 11). Two independent raised sealing ribs form a redundant sealing layer. When one sealing rib fails due to long-term use, aging, or deformation under stress, the other sealing rib can still maintain an effective seal, significantly reducing the risk of oil leakage. Sealing gasket 1 and sealing gasket 2 11 are bonded and fixed with resin adhesive to ensure the stability of their connection position. At the same time, it makes the clamping force more evenly distributed on the mating surface of the oil pan and the engine. This design is especially suitable for uneven or slightly deformed contact surfaces, and can compensate for local sealing deficiencies caused by processing errors or assembly stress. In addition, a grid structure reinforcement layer 13 is provided around the sealing gasket hole 12 of sealing gasket 2 11 to further enhance the compressive strength at the hole position, ensure that the support force is evenly distributed during screw assembly, and avoid seal failure due to local stress concentration.

[0032] The sealing gasket 1 adopts a multi-layer composite structure. The outer layer 101 consists of a rubber base layer 1001, a polyurethane anti-aging layer 1002, and a polyurea corrosion-resistant layer 1003. The inner layer 102 is made of stainless steel sheet. The metal sheet serves as a skeleton to provide high-strength support, which greatly improves the overall rigidity and compressive strength of the sealing gasket and avoids deformation caused by excessive bolt preload or engine vibration. At the same time, the rubber material (such as AEM rubber) gives the sealing gasket excellent elasticity and oil resistance, which enables it to maintain stable performance in high temperature (above 100℃) and thermal cycling environments. The composite structure of metal and rubber balances the elasticity and rigidity requirements, ensuring long-term contact of the sealing surface. The teeth 1021 on the sidewall of the inner layer 102 further enhance the interlocking effect of metal and rubber, improve the bonding strength, and prevent delamination or displacement, thereby ensuring the hole position accuracy and overall durability of the sealing gasket.

[0033] The stainless steel skeleton of the inner layer 102 can withstand high-temperature thermal expansion, reducing the fluctuation of the sealing gap caused by temperature changes. The double sealing rib structure can compensate for the difference in thermal expansion coefficients between metal and rubber materials in hot and cold cycles, maintaining sealing stability. The anti-aging layer 1002 (polyurethane coating) and corrosion-resistant layer 1003 (polyurea coating) of the outer layer 101 provide weather resistance, UV resistance and chemical corrosion resistance protection, respectively, delaying material aging. In addition, the AEM rubber base layer 1001 has excellent oil resistance and compression set performance, ensuring that the gasket can still recover its elasticity after long-term pressure. The labyrinth structure of the reinforcing layer 13 further enhances the local anti-deformation ability, enabling the gasket to maintain a reliable seal under the action of multiple factors such as high temperature, oil erosion and mechanical vibration.

[0034] 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 dual bead oil pan gasket, comprising a gasket one (1) and a gasket two (11), characterized by: The sealing gasket one (1) and the sealing gasket two (11) are arranged in an inner-outer distribution structure, the connecting position of the sealing gasket one (1) and the sealing gasket two (11) is fixed by resin adhesive bonding, the surface of the sealing gasket two (11) is provided with a sealing gasket hole (12), the position of the sealing gasket one (1) close to the sealing gasket hole (12) is filled with a reinforcing layer (13), and the reinforcing layer (13) is in a grid structure; The sealing gasket one (1) is sequentially composed of an outer layer (101) and an inner layer (102), and the outer layer (101) wraps the inner layer (102); The outer layer (101) is further divided into a base layer (1001), an anti-aging layer (1002) and a corrosion-resistant layer (1003), the surface of the base layer (1001) is coated with the anti-aging layer (1002), and the surface of the anti-aging layer (1002) is coated with the corrosion-resistant layer (1003).

2. The dual bead oil pan gasket of claim 1, wherein: The reinforcing layer (13) and the base layer (1001) are both made of rubber material.

3. The dual bead oil pan gasket of Claim 1, wherein: The anti-aging layer (1002) is made of polyurethane thin coating material.

4. The dual bead oil pan gasket of Claim 1, wherein: The corrosion-resistant layer (1003) is made of polyurea thin coating material.

5. The dual bead oil pan gasket of Claim 1, wherein: The inner layer (102) is made of stainless steel material and is in a sheet structure.

6. The dual bead oil pan gasket of Claim 1, wherein: A plurality of teeth (1021) are arranged on the side wall of the inner layer (102) and are symmetrically arranged along the two ends of the inner layer (102).

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