Compression-resistant O-shaped rubber sealing ring
By designing a sealing cavity and support components inside the O-ring, the contact area and friction are increased, solving the problem of traditional O-rings being prone to deformation and leakage under high pressure, and achieving more stable sealing performance.
Patent Information
- Application Number
- CN202423271616.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Traditional O-rings are prone to deformation and leakage under high pressure, resulting in poor sealing performance.
A pressure-resistant O-ring was designed, which has a sealing cavity and a support assembly inside, including a limiting ring, a groove, a slider and a connecting rod. The contact area and friction are increased by rubber connecting plates and sealing ribs, and the pressure is dispersed by the elastic deformation of the rubber material.
It improves the pressure resistance of the sealing ring, reduces the risk of leakage, enhances the sealing effect, and ensures stable sealing performance under high pressure.
Smart Images
Figure CN223825597U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of O-ring rubber sealing technology, specifically a pressure-resistant O-ring rubber sealing ring. Background Technology
[0002] O-rings provide sufficient sealing preload and compensate for the wear of PTFE rings. PTFE has a low coefficient of friction, with similar dynamic and static coefficients. They are suitable for sealing piston rods in high- and low-speed reciprocating motion and high-pressure systems. Using two stepped rings for sealing, zero leakage can be achieved. O-rings are widely used in internal combustion locomotives, automobiles, tractors, construction machinery, machine tools, and various hydraulic and pneumatic components, capable of sealing fixed, reciprocating, and rotary motions. O-rings account for over 50% of seals used in mechanical products.
[0003] O-rings are widely used in mechanical equipment and piping systems to prevent fluid leakage. Traditional O-rings typically use a circular cross-section design, but under high pressure, they often suffer from poor sealing performance, easy deformation, and easy leakage. Circular cross-section O-rings have limited contact area under pressure, easily leading to localized high pressure, causing rapid wear of the ring and affecting sealing performance. Therefore, a pressure-resistant O-ring is proposed. Utility Model Content
[0004] The purpose of this invention is to provide a pressure-resistant O-ring rubber seal to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure-resistant O-ring rubber seal, comprising an O-ring body, wherein a sealing cavity is formed inside the O-ring body;
[0006] The outer side of the O-ring body is integrally formed with two rubber connecting plates, and a number of sealing ribs are fixed on one side of the rubber connecting plate.
[0007] The sealing cavity is equipped with a support component to increase the compressive strength of the O-ring body;
[0008] The support assembly includes a limiting ring, the surface of which has several grooves, and several sliders are slidably connected to the inner side of the grooves. A connecting rod is fixed to one side of each slider.
[0009] Preferably, the sealing rib is arc-shaped, and the rubber connecting plates are located on both sides of the O-ring body.
[0010] Preferably, one end of each of the connecting rods is fixed with a push plate, and one side of the push plate is attached to the inner wall of the sealing cavity.
[0011] Preferably, the groove and the slider described above are both T-shaped.
[0012] Preferably, the limiting ring is located inside the sealing cavity, and the cross-section of the limiting ring is circular.
[0013] Preferably, the connecting rods are evenly distributed around the limiting ring.
[0014] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:
[0015] 1. By designing the O-ring body's contact surface as a horizontal surface and incorporating multiple sealing ribs, the contact area with the parts on both sides of the sealing groove is increased. This helps to form a tighter and more reliable seal, reducing the risk of leakage. The preferential contact of the sealing ribs ensures that the O-ring body can be evenly and firmly adhered to the surface of the parts during assembly, further enhancing the sealing effect. The multiple sealing ribs structure makes the pressure load distributed more evenly on the O-ring body, avoiding the local high pressure phenomenon that may occur with traditional circular cross-section O-rings. At the same time, the horizontal rubber connecting plate and sealing ribs increase the friction between the O-ring body and the parts, making the O-ring body less likely to fall off or move when subjected to external forces.
[0016] 2. When the O-ring body is compressed after installation, the rubber connecting plate and sealing rib can effectively distribute the compressive force to the upper and lower push plates. The push plates then push the connecting rod to the side of the limiting ring. Since the connecting rod is made of rubber, it can produce elastic deformation, thereby absorbing and dispersing the compressive force, improving the compressive strength of the O-ring body, and enabling it to maintain stable sealing performance under high pressure. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a first-view structural diagram of the present invention;
[0019] Figure 2 This is a schematic diagram of the second-view structure of the present invention;
[0020] Figure 3 This is a schematic cross-sectional view of the sealing cavity of this utility model.
[0021] Figure 4This is a schematic diagram of the slide groove structure of this utility model;
[0022] Figure 5 This is a schematic diagram of the limiting ring structure of this utility model.
[0023] Explanation of reference numerals in the attached drawings: 1. O-ring body; 2. Rubber connecting plate; 3. Sealing rib; 4. Sealing cavity; 51. Connecting rod; 52. Push plate; 53. Limiting ring; 54. Sliding block; 55. Slide groove. Detailed Implementation
[0024] 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.
[0025] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.
[0026] Example
[0027] Please see Figure 1-5 This utility model provides a technical solution: a pressure-resistant O-ring rubber seal, including an O-ring body 1, with a sealing cavity 4 inside the O-ring body 1; two rubber connecting plates 2 are integrally formed on the outer side of the O-ring body 1, and several sealing ribs 3 are fixed on one side of the rubber connecting plates 2. The sealing ribs 3 are made of rubber; the sealing ribs 3 are arc-shaped, and the rubber connecting plates 2 are located on both sides of the O-ring body 1.
[0028] The sealing cavity 4 is equipped with a support assembly to increase the compressive strength of the O-ring body 1;
[0029] The support assembly includes a limiting ring 53 made of plastic. Several grooves 55 are formed on the surface of the limiting ring 53. Several sliders 54, also made of plastic, are slidably connected to the inner side of the grooves 55. A connecting rod 51 is fixed to one side of each slider 54. The connecting rod 51 can be made of rubber with a hardness of 70±5 degrees. The connecting rod 51, being made of rubber, has elastic deformation capability, which can absorb and disperse extrusion pressure, thereby reducing the direct stress on the O-ring body 1. A push plate 52 is fixed to one end of each connecting rod 51. One side of the push plate 52 is attached to the inner wall of the sealing cavity 4. The grooves 55 and sliders 54 are both T-shaped. The limiting ring 53 is located inside the sealing cavity 4, and its cross-section is circular. Several connecting rods 51 are evenly distributed around the limiting ring 53.
[0030] When the circumferential side of the O-ring body 1 is compressed, the horizontal push plate 52 pushes the connecting rod 51 towards the limiting ring 53. Simultaneously, the two vertical connecting rods 51, through their pulling action, effectively prevent the O-ring body 1 from deforming after compression, ensuring that the O-ring body 1 maintains its original shape and size under various compressive forces, thus avoiding seal failure due to deformation. The O-ring body 1 maintains the integrity and stability of its sealing surface when compressed, helping to reduce the risk of leakage and improve the reliability and stability of the seal.
[0031] The limiting ring 53 has a broken surface on one side. Multiple sliders 54 are slid inside the groove 55. Multiple push plates 52 are connected to one side of the connecting rod 51 respectively. The limiting ring 53 is inserted into the sealing cavity 4. Then, glue is used to bond the broken surface of the limiting ring 53 to assemble the limiting ring 53 into a complete ring.
[0032] Working principle: When the O-ring body 1 is to be used, the O-ring body 1 is first placed inside the sealing groove, so that the rubber connecting plate 2 contacts the parts on both sides of the sealing groove. When the rubber connecting plate 2 at both ends contacts one side of the part, the multiple sealing ribs 3 also contact one side of the part first. Unlike the traditional circular cross-section O-ring body 1, the new O-ring body 1 adopts a horizontal contact surface and multiple sealing ribs 3 structure, which improves the contact area and the pressure load is evenly distributed.
[0033] When the O-ring body 1 is installed, the rubber connecting plate 2 and the sealing rib 3 are squeezed on one side, causing the push plates 52 on the upper and lower sides to push the connecting rod 51 to the limiting ring 53 side. At this time, the rubber connecting rod 51 can produce elastic deformation, increasing the compressive strength of the O-ring body 1.
[0034] When the circumferential side of the O-ring body 1 is compressed, the horizontal push plate 52 pushes the connecting rod 51 to move towards the limiting ring 53, and under the pulling action of the two vertical connecting rods 51, the O-ring body 1 is prevented from deforming after being compressed.
[0035] In summary, by making the contact surface of the O-ring body 1 horizontal and having multiple sealing ribs 3, the contact area with the parts on both sides of the sealing groove is increased, which helps to form a tighter and more reliable seal and reduces the risk of leakage. The preferential contact of the sealing ribs 3 can ensure that the O-ring body 1 can be evenly and firmly attached to the surface of the parts during assembly, further enhancing the sealing effect. The multiple sealing ribs 3 structure makes the pressure load distributed more evenly on the O-ring body 1, avoiding the local high pressure phenomenon that may occur with traditional circular cross-section O-rings. At the same time, the horizontal rubber connecting plate 2 and the sealing ribs 3 increase the friction between the O-ring body 1 and the parts, making the O-ring body 1 less likely to fall off or move when subjected to external forces.
[0036] When the O-ring body 1 is compressed after installation, the rubber connecting plate 2 and the sealing rib 3 can effectively distribute the compressive force to the push plates 52 on the upper and lower sides. The push plates 52 then push the connecting rod 51 to move towards the limiting ring 53. Since the connecting rod 51 is made of rubber, it can produce elastic deformation, thereby absorbing and dispersing the compressive force, improving the compressive strength of the O-ring body 1, and enabling it to maintain stable sealing performance under high pressure.
[0037] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.
Claims
1. A pressure-resistant O-ring rubber seal, comprising an O-ring body (1), characterized in that: The O-ring body (1) has a sealing cavity (4) inside; The outer side of the O-ring body (1) is integrally formed with two rubber connecting plates (2), and a number of sealing ribs (3) are fixed on one side of the rubber connecting plate (2). The sealing cavity (4) is provided with a support component for increasing the compressive strength of the O-ring body (1); The support assembly includes a limiting ring (53), the surface of which is provided with a plurality of sliding grooves (55), and a plurality of sliders (54) are slidably connected to the inner side of the sliding grooves (55), and a connecting rod (51) is fixed on one side of the sliders (54).
2. The pressure-resistant O-ring rubber seal according to claim 1, characterized in that: The sealing rib (3) is arc-shaped, and the rubber connecting plate (2) is located on both sides of the O-ring body (1).
3. The pressure-resistant O-ring rubber seal according to claim 1, characterized in that: Several connecting rods (51) have a push plate (52) fixed at one end, and one side of the push plate (52) is attached to the inner wall of the sealing cavity (4).
4. The pressure-resistant O-ring rubber seal according to claim 3, characterized in that: Both the groove (55) and the slider (54) are T-shaped.
5. The pressure-resistant O-ring rubber seal according to claim 4, characterized in that: The limiting ring (53) is located inside the sealing cavity (4), and the cross-section of the limiting ring (53) is circular.
6. The pressure-resistant O-ring rubber seal according to claim 5, characterized in that: Several connecting rods (51) are evenly distributed around the limiting ring (53).