Cylinder gasket with hard spots

Abstract

The utility model relates to the technical field of sealing pieces, in particular to a cylinder gasket with pits. The cylinder gasket with the pocking marks comprises a gasket body, a cylinder opening hole and a pocking mark structure are arranged on the gasket body, and the pocking mark structure is annular, annularly arranged on the periphery of the cylinder opening hole and used for sealing the periphery of the cylinder opening hole. Compared with the prior art, the overall thickness of the gasket body is increased, the pocking mark structure is arranged on the gasket body and seals the periphery of the cylinder opening hole, the thickness of the gasket body is locally increased, the contact area between the cylinder gasket and the cylinder body can be increased, and therefore the sealing performance is improved, and meanwhile the cost of the cylinder gasket is prevented from being greatly increased. Meanwhile, the thickened pock structures can bear higher pressure, the cylinder gasket is prevented from being deformed or damaged in a high-pressure environment, and the service life of the cylinder gasket is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of sealing elements, and in particular to a cylinder gasket with pitting. Background Art

[0002] The cylinder gasket, located between the cylinder head and the cylinder block, is also called the cylinder bed. Its function is to fill the microscopic gaps between the cylinder block and the cylinder head to ensure good sealing at the joint surface, thereby ensuring the sealing of the combustion chamber and preventing cylinder air leakage and water jacket leakage.

[0003] With the continuous strengthening of internal combustion engines, thermal and mechanical loads are constantly increasing, and the sealing performance of cylinder gaskets is becoming increasingly important. An existing high-strength sealing cylinder gasket includes a cylinder gasket body and several cylinder bores located on the cylinder gasket body. An inner ring assembly is fitted on the inner circumferential wall of the cylinder bore to enhance its fatigue resistance. An oil seal groove is formed on the upper end surface of the cylinder gasket body to enhance its sealing strength and allow oil to be stored and circulated. Several flanges are provided in the oil seal groove to enhance the sealing strength. A sealing gap is formed between two adjacent flanges to allow oil to circulate. The inner ring assembly consists of a reinforcing ring sleeve and a sealing washer. A connecting structure for the reinforcing ring sleeve to be installed is provided between the cylinder bore and the reinforcing ring sleeve.

[0004] Although the above cylinder gasket improves the sealing strength of the cylinder gasket and extends the service life of the cylinder gasket, the overall material of the cylinder gasket is relatively thick, resulting in a significant increase in cost. Utility Model Content

[0005] In order to improve the sealing performance of the cylinder gasket while controlling the cost of the cylinder gasket as much as possible, the present application provides a cylinder gasket with pitting.

[0006] The present application provides a pitted cylinder head gasket adopting the following technical solution:

[0007] A cylinder gasket with pitting comprises a gasket body, wherein the gasket body is provided with a cylinder port hole and a pitting structure, wherein the pitting structure is annular and arranged around the cylinder port hole to seal the periphery of the cylinder port hole.

[0008] By adopting this technical solution, rather than increasing the overall thickness of the gasket body, the gasket body is provided with a pitted structure that seals around the cylinder port. This locally increases the thickness of the gasket body, increasing the contact area between the cylinder gasket and the cylinder block, thereby improving sealing performance while avoiding a significant increase in gasket cost. Furthermore, the thickened pitted structure can withstand higher pressures, preventing deformation or damage in high-pressure environments and extending the gasket's service life.

[0009] Optionally, the pitting structure includes a plurality of protrusions arranged at intervals, with concave spots formed between adjacent protrusions, and the protrusions and the concave spots are alternately arranged in two perpendicular directions.

[0010] By adopting the above technical solution, the regularity and repeatability of the alternating arrangement of protrusions and depressions in two perpendicular directions make the production process more standardized and automated, simplifying the manufacturing process, thereby reducing manufacturing costs and improving production efficiency.

[0011] Optionally, the protrusions and the recesses are alternately arranged in the length direction and the width direction of the gasket body.

[0012] By adopting the above technical solution, the symmetry and repeatability of the mold can be utilized to simplify the stamping or pressing process, thereby reducing manufacturing complexity and cost.

[0013] Optionally, in the radial direction of the cylinder port hole, the number of the protrusions is not less than two.

[0014] By adopting the above technical solution, multiple protrusions provide more contact area, enhance the friction between the cylinder gasket and the cylinder block, improve the fixing firmness, and help improve the sealing performance and structural stability of the cylinder gasket.

[0015] Optionally, the concave points are filled with high temperature resistant material.

[0016] By adopting the above technical solution, the high-temperature resistant material can withstand thermal expansion and contraction in a high-temperature environment. Filling the concave points with the high-temperature resistant material can enhance the sealing performance of the cylinder gasket, while reducing cracks and deformation caused by thermal stress, thereby extending the service life of the cylinder gasket.

[0017] Optionally, the thickness of the protrusion is 0.04-0.06 mm.

[0018] By adopting the above technical solution, the smaller protrusion thickness is conducive to improving the sealing performance through local thickening without significantly increasing the overall thickness and weight of the gasket.

[0019] Optionally, the pitting structure is provided on both sides of the gasket body.

[0020] By adopting the above technical solution, both sides of the gasket body are provided with a pitting structure, so that when the cylinder gasket contacts the cylinder block and cylinder head, both sides can provide additional contact area and sealing effect, thereby enhancing the overall sealing performance.

[0021] Optionally, the pitting structures located on both sides of the gasket body are staggered.

[0022] By adopting the above technical solution, when the cylinder gasket contacts the cylinder block and cylinder head, the protrusions on both sides of the gasket body are squeezed, which can improve the sealing effect and reduce local stress concentration, thereby extending the service life of the cylinder gasket.

[0023] Optionally, the thickness of the gasket body is 0.3-0.4 mm.

[0024] By adopting the above technical solution, it is beneficial to ensure that the gasket has sufficient strength and durability while also ensuring the flexibility and sealing performance of the gasket.

[0025] Optionally, the gasket body is made of tinplate.

[0026] By adopting the above technical solution, the gasket body is protected from chemical corrosion and its service life is extended; the high strength and good ductility of tinplate ensure the structural stability and sealing effect of the gasket under high pressure.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The pitting structure seals the area around the cylinder port hole and partially increases the thickness of the gasket body, which can increase the contact area between the cylinder gasket and the cylinder block, and improve the sealing performance of the cylinder gasket while controlling the cost of the cylinder gasket as much as possible;

[0029] 2. The thickened pitting structure can withstand higher pressure, preventing the cylinder gasket from deformation or damage under high pressure environment, thus extending the service life of the cylinder gasket;

[0030] 3. Filling the concave points with high-temperature resistant materials can enhance the sealing performance of the cylinder gasket and reduce cracks and deformation caused by thermal stress, thereby extending the service life of the cylinder gasket;

[0031] 4. Both sides of the gasket body are provided with a pitting structure, so that when the cylinder gasket contacts the cylinder block and cylinder head, both sides can provide additional contact area and sealing effect, thereby enhancing the overall sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic structural diagram of a cylinder head gasket with pitting in an embodiment of the present application;

[0033] Figure 2 yes Figure 1 Enlarged schematic diagram of point A in the middle.

[0034] Description of reference numerals:

[0035] 100, gasket body; 101, cylinder mouth hole; 200, pitting structure; 201, protrusion; 202, depression. DETAILED DESCRIPTION

[0036] The following will be combined with the Figure 1-2 , clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0037] The embodiment of the present application discloses a cylinder head gasket with pitting. Figure 1 A cylinder gasket with pitting includes a gasket body 100, which is provided with a cylinder port hole 101 and a pitting structure 200. The pitting structure 200 is annular and is arranged around the cylinder port hole 101 to seal the area around the cylinder port hole 101.

[0038] The provision of the pitting structure 200 increases the surface roughness of the cylinder gasket, increasing the contact area between the cylinder gasket and the cylinder block, thereby improving the friction coefficient between the cylinder gasket and the cylinder block and enhancing the sealing effect. Compared to increasing the overall thickness of the gasket body 100, the provision of the pitting structure 200 on the gasket body 100 seals around the cylinder port hole 101, thereby locally increasing the thickness of the gasket body 100, improving sealing performance while avoiding a significant increase in cylinder gasket cost.

[0039] Reference Figure 2 The pitting structure 200 includes a plurality of protrusions 201 arranged at intervals, and depressions 202 are formed between adjacent protrusions 201. The arrangement positions of the protrusions 201 and the depressions 202 can be various as long as they play a sealing role around the cylinder port 101.

[0040] The thickened pitting structure 200 can withstand higher pressure. The alternating arrangement of the protrusions 201 and the depressions 202 helps to disperse and absorb pressure, reduce local stress concentration, prevent the cylinder gasket from deformation or damage under high-pressure conditions, and effectively extend the service life of the cylinder gasket.

[0041] In this embodiment, the protrusions 201 and the recesses 202 are alternately arranged in two perpendicular directions. The regularity and repeatability of this arrangement make the production process more standardized and automated, simplifying the manufacturing process, thereby reducing manufacturing costs and improving production efficiency.

[0042] Specifically, in the length direction of the gasket body 100 (ie Figure 2 in the transverse direction) and the width direction (i.e. Figure 2 In the longitudinal direction (in the longitudinal direction), the protrusions 201 and the recesses 202 are arranged alternately. Such an arrangement can utilize the symmetry and repeatability of the mold to simplify the stamping or pressing process, thereby reducing manufacturing complexity and cost.

[0043] There are at least two protrusions 201 radially around the cylinder port hole 101, ensuring a secure seal around the cylinder port hole 101. Multiple protrusions 201 provide a larger contact area, enhancing friction between the cylinder gasket and the cylinder block, improving secure fixation, and contributing to improved sealing performance and structural stability. Furthermore, increasing the number of protrusions 201 allows for more even distribution of sealing pressure, reducing localized stress concentration and thus minimizing the risk of leakage.

[0044] High-temperature resistant materials can withstand thermal expansion and contraction in high-temperature environments. Filling recesses 202 with high-temperature resistant materials enhances the gasket's sealing performance. Furthermore, high-temperature resistant materials typically exhibit excellent thermal stability and thermal shock resistance, preventing aging or deformation of the gasket in high-temperature environments. This helps maintain the gasket's structural integrity under high-temperature operating conditions, reducing cracks and deformation caused by thermal stress, thereby extending the gasket's service life. For example, materials such as high-temperature and corrosion-resistant rubber and high-temperature graphite can be used, capable of withstanding temperatures exceeding 700°C.

[0045] The thickness of the gasket body 100 is 0.3-0.4 mm. In this embodiment, the thickness of the gasket body 100 is 0.35 mm, which ensures sufficient strength and durability while also ensuring flexibility and sealing performance. At this thickness, the gasket can adapt to minor irregularities on the flange surface while maintaining good compressibility under the action of the bolt preload to achieve an effective seal. In addition, thinner gaskets have lower creep relaxation characteristics, which means that during long-term operation, the gasket can better maintain fastener torque and reduce the risk of leakage due to relaxation.

[0046] The thickness of the protrusion 201 is 0.04-0.06 mm. In this embodiment, the thickness of the protrusion 201 is 0.05 mm. The smaller thickness of the protrusion 201 is beneficial to improving the sealing performance through local thickening without significantly increasing the overall thickness and weight of the gasket. It is also convenient to control the shape and size of the protrusion 201 during the manufacturing process to ensure the consistency and reliability of the protrusion 201.

[0047] The gasket body 100 is provided with pitting structures 200 on both sides, providing additional contact area and sealing effect on both sides when the cylinder gasket contacts the cylinder block and cylinder head, thereby enhancing overall sealing performance. This symmetrical pitting layout also helps evenly distribute pressure, reducing localized stress concentration and preventing gasket deformation or damage under high-pressure environments, thereby extending the service life of the cylinder gasket.

[0048] The pitting structures 200 on both sides of the gasket body 100 are arranged in a staggered manner, that is, Figure 2In the figure, the green filling position is the position of the protrusion 201, and the white position is the position of the concave point 202 filled with high-temperature resistant material. On the other side of the gasket body 100, the green filling position is the position of the concave point 202 filled with high-temperature resistant material, and the white position is the position of the protrusion 201 filled with high-temperature resistant material.

[0049] When the cylinder gasket contacts the cylinder block and the cylinder head, the protrusions 201 on both sides of the gasket body 100 are squeezed, which can improve the sealing effect and reduce local stress concentration, thereby extending the service life of the cylinder gasket.

[0050] The gasket body 100 is made of tinplate. Tinplate, as the material for the gasket body 100, fully utilizes its corrosion resistance, non-toxicity, odorlessness, surface gloss, light weight, high strength, and ease of processing and forming. These properties make tinplate ideal for cylinder head gaskets, especially in environments that must withstand high temperatures and high pressures. Tinplate's corrosion resistance protects the gasket body 100 from chemical corrosion, extending its service life; its high strength and good ductility ensure the gasket's structural stability and sealing effectiveness under high pressure; and its ease of processing and forming make tinplate gaskets more efficient and cost-effective to produce.

[0051] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted" and "connected" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0052] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0053] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A cylinder head gasket with pitting, characterized in that: The gasket body (100) is provided with a cylinder mouth hole (101) and a pitting structure (200). The pitting structure (200) is annular and arranged around the cylinder mouth hole (101) to seal the periphery of the cylinder mouth hole (101).

2. The cylinder head gasket with pitting according to claim 1, characterized in that: The pitting structure (200) comprises a plurality of protrusions (201) arranged at intervals, with concave spots (202) formed between adjacent protrusions (201), and the protrusions (201) and the concave spots (202) are alternately arranged in two perpendicular directions.

3. The cylinder head gasket with pitting according to claim 2, characterized in that: In the length direction and the width direction of the gasket body (100), the protrusions (201) and the recesses (202) are alternately arranged.

4. The cylinder head gasket with pitting according to claim 2, characterized in that: In the radial direction of the cylinder port hole (101), the number of the protrusions (201) is not less than two.

5. The pitted cylinder head gasket according to claim 2, characterized in that: The concave points (202) are filled with high temperature resistant material.

6. The pitted cylinder head gasket according to claim 2, characterized in that: The thickness of the protrusion (201) is 0.04-0.06 mm.

7. The pitted cylinder head gasket according to any one of claims 1 to 6, characterized in that: Both sides of the gasket body (100) are provided with the pitting structure (200).

8. The pitted cylinder head gasket according to claim 7, characterized in that: The pitting structures (200) located on both sides of the gasket body (100) are arranged in a staggered manner.

9. The pitted cylinder head gasket according to claim 1, characterized in that: The thickness of the gasket body (100) is 0.3-0.4 mm.

10. The pitted cylinder head gasket according to claim 1, characterized in that: The gasket body (100) is made of tinplate.

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