H-shaped sealing ring
By designing the convex and reinforcing structure of the H-type sealing ring, the problems of squeezing and leakage of the X-type sealing ring under large gaps and pressure changes are solved, achieving higher sealing reliability and service life.
Patent Information
- Application Number
- CN202520377575.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-05
AI Technical Summary
Conventional X-type seals are prone to gap formation when the groove clearance is large and there is no space to add a retaining ring. Furthermore, when the pressure on both sides changes frequently, the pressure on the inside and outside of the seal cannot be quickly balanced, leading to leakage and reduced service life.
An H-shaped sealing ring is designed, having a first convex part and a second convex part arranged circumferentially on the inner and outer sides. There is a gap between the convex parts and the end face of the sealing ring body, and there is a concave part between the convex parts. Reinforcing parts are provided on both end faces to enhance the sealing ring's resistance to torsional deformation and quickly balance the pressure difference between the inner and outer sides.
It improves the sealing ring's resistance to torsional deformation, reduces the risk of gap extrusion, prevents tipping and leakage, and extends its service life.
Smart Images
Figure CN223938633U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of sealing technology, and in particular to an H-type sealing ring. Background Technology
[0002] Conventional X-ring seals can replace O-rings due to their small size and compact installation. Because lubricating oil or grease can be stored between the two lips, conventional X-ring seals achieve better lubrication and lower frictional resistance. Furthermore, the two lips seal the sealing surface evenly, preventing torsion and resulting in excellent sealing performance. However, in cases with large groove gaps and no space to add a retaining ring, conventional X-ring seals are prone to gap formation, leading to reduced service life. Additionally, when pressure changes frequently on both sides, the pressure on the inner and outer sides of the seal cannot quickly balance, making it prone to tipping over and leakage. Utility Model Content
[0003] This application aims to solve one of the aforementioned technical problems in the prior art. Therefore, embodiments of this application provide an H-type sealing ring.
[0004] According to an embodiment of this application, an H-type sealing ring is provided, including a sealing ring body. The inner and outer sides of the sealing ring body are circumferentially provided with a first protrusion and a second protrusion. There is a gap between the first protrusion or the second protrusion and the adjacent end face of the sealing ring body. There is a recess between the first protrusion and the second protrusion. Both end faces of the sealing ring body are circumferentially provided with reinforcing portions.
[0005] The above-mentioned H-type sealing ring has at least the following beneficial effects: it provides a gap between the first or second protrusion and the end face of the adjacent sealing ring body, and the combination of the concave portion and the reinforcing portion of the end face can improve the sealing ring body's resistance to torsional deformation, reduce the risk of squeezing, and quickly balance the pressure difference between the inner and outer sides of the sealing ring body to prevent side overturning and squeezing, thereby improving sealing reliability and service life.
[0006] According to the H-shaped sealing ring described in the embodiments of this application, both the first protrusion and the second protrusion are provided with a first arc surface that protrudes in a direction away from the interior of the sealing ring body.
[0007] According to the H-type sealing ring described in the embodiments of this application, the recess is provided with a second arc surface that is recessed toward the interior of the sealing ring body.
[0008] According to the H-shaped sealing ring described in the embodiments of this application, the first arc surface is in contact with the second arc surface.
[0009] According to the H-type sealing ring described in the embodiments of this application, both the first protrusion and the second protrusion are connected to the end face of the sealing ring body through an arc surface, and the arc surface is recessed in the direction of the interior of the sealing ring body.
[0010] According to the H-type sealing ring described in the embodiments of this application, the width of the reinforcing portion is smaller than the end face width of the sealing ring body.
[0011] According to the H-type sealing ring described in the embodiments of this application, the cross-sectional shape of the reinforcing part is an arc or a polygon.
[0012] According to the H-type sealing ring described in the embodiments of this application, the sealing ring body is made of rubber or thermoplastic elastomer.
[0013] According to the H-shaped sealing ring described in the embodiments of this application, the reinforcing part is provided with a plurality of grooves, and the grooves divide the reinforcing part into a plurality of reinforcing blocks.
[0014] According to the H-type sealing ring described in the embodiments of this application, the edge of the reinforcing portion is rounded or chamfered.
[0015] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0016] The present application will be further described below with reference to the accompanying drawings and embodiments;
[0017] Figure 1 This is a schematic diagram of the structure of the sealing ring body in an embodiment of this application. Figure 1 ;
[0018] Figure 2 This is a schematic diagram of the structure of the sealing ring body in an embodiment of this application. Figure 2 ;
[0019] Figure 3 This is a schematic diagram of the structure of the sealing ring body in an embodiment of this application. Figure 3 ;
[0020] Figure 4 This is a schematic diagram of the structure of the sealing ring body in an embodiment of this application. Figure 4 .
[0021] Reference numerals: sealing ring body 100, first protrusion 110, concave portion 120, second protrusion 130, reinforcing portion 140, groove 141, reinforcing block 142, arc surface 150. Detailed Implementation
[0022] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.
[0023] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0024] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0025] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.
[0026] Reference Figures 1 to 4 The H-type sealing ring provided in this application embodiment includes a sealing ring body 100. The inner and outer sides of the sealing ring body 100 are circumferentially provided with a first protrusion 110 and a second protrusion 130. The first protrusion 110 and the second protrusion 130 form the lip of the sealing ring body 100. There is a gap between the first protrusion 110 or the second protrusion 130 and the end face of the adjacent sealing ring body 100. There is a recess 120 between the first protrusion 110 and the second protrusion 130. The recess 120 is used to store lubricating oil or grease. Both ends of the sealing ring body 100 are circumferentially provided with a reinforcing portion 140. The provision of the reinforcing portion 140 can further improve the sealing ring's resistance to torsional deformation.
[0027] This application avoids the deformation of the protrusion affecting the sealing ring body 100 by creating a gap between the first protrusion 110 or the second protrusion 130 and the end face of the adjacent sealing ring body 100. The combination of the protrusion with the concave portion 120 and the reinforcing portion 140 of the end face can significantly improve the anti-torsional deformation ability of the sealing ring body 100, reduce the risk of gapping during use, and quickly balance the pressure difference between the inner and outer sides of the sealing ring body 100 during use to prevent overturning and gapping, thereby improving sealing reliability and service life.
[0028] In some embodiments, the first protrusion 110 and the second protrusion 130 have the same shape and size data, and the distance between the first protrusion 110 and the end face of the nearest sealing ring body 100 is the same as the distance between the second protrusion 130 and the end face of the nearest sealing ring body 100.
[0029] Here, the distance between the first protrusion 110 and the end face of the closest sealing ring body 100 refers to the vertical distance of the first protrusion 110 to the end face of the closest sealing ring body 100. Similarly, the distance between the second protrusion 130 and the end face of the closest sealing ring body 100 refers to the vertical distance of the second protrusion 130 to the end face of the closest sealing ring body 100. Setting an appropriate gap can reduce the impact of deformation caused by the protrusion on the sealing ring body 100.
[0030] In some embodiments, both the first protrusion 110 and the second protrusion 130 are provided with a first arc surface that protrudes in a direction away from the interior of the sealing ring body 100. The large radius of the first arc surface can enhance the contact stress of the protrusion and improve the sealing effect of the protrusion.
[0031] In some other embodiments, the top of the first protrusion 110 or the second protrusion 130 away from the sealing ring body 100 can be a plane, and the two sides of the plane are provided with first arc surfaces.
[0032] In some embodiments, the recess 120 is provided with a second arc surface that is recessed toward the interior of the sealing ring body 100. The first arc surface and the second arc surface are adjacent, which facilitates manufacturing. The first arc surface and the second arc surface cooperate to increase the contact stress of the protrusion, improve the sealing effect of the protrusion, and also provide sufficient deformation space for the protrusion.
[0033] In some embodiments, both the first protrusion 110 and the second protrusion 130 abut against the end face of the sealing ring body 100 via an arc surface 150, which is recessed toward the interior of the sealing ring body 100. The arc surface 150 makes the contact between the protrusion and the end face of the sealing ring body 100 smoother, which is easier to manufacture and can also improve the bending resistance of the entire sealing body.
[0034] In some other embodiments, the width of the reinforcing part 140 is smaller than the end face width of the sealing ring body 100, so that the reinforcing part 140 can play a reinforcing role without increasing the thickness of the sealing ring body 100 too much. In addition, if the width of the reinforcing part 140 is too large, it will easily affect the sealing effect of the protrusion.
[0035] In some embodiments, the cross-sectional shape of the reinforcing part 140 is an arc or a polygon.
[0036] Specifically, in some embodiments, the cross-sectional shape of the reinforcing part 140 is arc-shaped.
[0037] In some embodiments of this application, the cross-sectional shape of the reinforcing part 140 can be rectangular or trapezoidal, so that the reinforcing part 140 has a flat plane.
[0038] In some embodiments, the edges of the reinforcing portion are rounded or chamfered.
[0039] When the cross-sectional shape of the reinforcing part 140 is rectangular, it can enhance the resistance of the sealing ring body 100 to torsional deformation. When the lip used for sealing is far away from the groove gap, it can increase the limit value of the sealing gap, which is beneficial to reduce the risk of gap extrusion. Furthermore, it can also reduce the tolerance requirements of the groove mating surface and save the groove processing cost.
[0040] In some embodiments, the reinforcing portion 140 is provided with a plurality of grooves 141, which divide the reinforcing portion 140 into a plurality of reinforcing blocks 142. The grooves 141 are provided so that when the pressure on both sides of the sealing ring body 100 changes frequently, the pressure difference between the two sides can be quickly balanced, preventing overturning and gapping, thereby improving sealing reliability and service life.
[0041] In some specific embodiments, the grooves 141 are arranged in a circumferential array, and the grooves 141 on one end face of the sealing ring body 100 are misaligned with the grooves 141 on the other end face of the sealing ring body 100, which can further improve the resistance of the sealing ring body 100 to torsional deformation.
[0042] In some specific embodiments, the sealing ring body 100 is made of rubber or thermoplastic elastomer.
[0043] The H-type sealing ring of this application solves the problems of existing X-type sealing rings, which are prone to gap extrusion when the mating clearance is large and there is no space to add a retaining ring, and the inability of the pressure on both sides of the sealing ring to quickly balance when the pressure on both sides changes frequently, which easily leads to side overturning and leakage.
[0044] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.
Claims
1. An H-type sealing ring, characterized in that: The sealing ring body includes a first protrusion and a second protrusion circumferentially provided on both the inner and outer sides of the sealing ring body. There is a gap between the first protrusion or the second protrusion and the adjacent end face of the sealing ring body. There is a recess between the first protrusion and the second protrusion. Both end faces of the sealing ring body are circumferentially provided with reinforcing portions.
2. The H-type sealing ring according to claim 1, characterized in that: Both the first protrusion and the second protrusion are provided with a first arc surface that protrudes in a direction away from the interior of the sealing ring body.
3. The H-type sealing ring according to claim 2, characterized in that: The recess is provided with a second arc surface that is recessed inward toward the interior of the sealing ring body.
4. The H-type sealing ring according to claim 3, characterized in that: The first arc surface is adjacent to the second arc surface.
5. The H-type sealing ring according to claim 1, characterized in that: Both the first protrusion and the second protrusion are connected to the end face of the sealing ring body through an arc surface, and the arc surface is recessed in the direction of the interior of the sealing ring body.
6. The H-type sealing ring according to claim 1, characterized in that: The width of the reinforcing part is smaller than the width of the end face of the sealing ring body.
7. The H-type sealing ring according to claim 1, characterized in that: The cross-sectional shape of the reinforcing part is either circular or polygonal.
8. The H-type sealing ring according to claim 1, characterized in that: The sealing ring body is made of rubber or thermoplastic elastomer.
9. The H-type sealing ring according to claim 1, characterized in that: The reinforcing part is provided with a plurality of grooves, which divide the reinforcing part into a plurality of reinforcing blocks.
10. The H-type sealing ring according to claim 9, characterized in that: The edges of the reinforcing part are rounded or chamfered.