Connector sealing gasket
By designing a combination of elastic sealing gaskets and support frames at the interface of molds or pneumatic equipment, the problems of poor sealing and easy breakage are solved, achieving efficient sealing and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 慈溪市睿进设计工作室
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-05
AI Technical Summary
In the existing technology, the sealing treatment at the mold cooling water pipe or the air circuit interface of the pneumatic equipment has problems such as poor sealing performance, easy damage, difficulty in reuse, and high cost.
An interface sealing gasket was designed, including an elastic sealing gasket and a support skeleton. The support skeleton is annular and nested on the elastic sealing gasket to ensure that the center of the sealing gasket deforms axially when subjected to axial force, avoiding skewing and enhancing the sealing performance. The sealing effect and service life are improved by the lower extension of the truncated annular part.
It improves sealing and reusability, reduces operating costs, simplifies the installation process, and enhances operational efficiency and user experience.
Smart Images
Figure CN224201112U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sealing parts in molds or pneumatic equipment, and more particularly to an interface sealing gasket. Background Technology
[0002] Sealing is required at mold cooling water pipe interfaces or pneumatic equipment air circuit interfaces. The common method is to wrap PTFE raw rubber tape around the threads of the interface pipe. To improve the sealing effect and seal any gaps at the connection, multiple turns of raw rubber tape are needed. However, because raw rubber tape is thin, it is easily damaged during wrapping, requiring even more turns to fill in any gaps. Even if the raw rubber tape appears to provide a seal at the interface pipe threads, it can easily shift or break during threaded connection, failing to achieve the intended seal. This necessitates disassembly and rewinding. After disassembly, residual tape strands must be cleaned to prevent clogging of internal orifices, and then the process is repeated until a seal is achieved. However, this same problem recurs after disassembly and reconnection, resulting in incomplete sealing, cumbersome and time-consuming pipe installation, and potential leaks of water or air. Summary of the Invention
[0003] The purpose of this utility model is to solve the above-mentioned problems existing in the prior art by providing an interface sealing gasket. A support frame is set to ensure that the elastic sealing gasket deforms axially with the axis of the pipe opening as the center when it is subjected to axial force, avoiding skewed deformation, which helps to ensure sealing performance. Under the support of the support frame, the elastic sealing gasket is protected, allowing the interface sealing gasket to be reused, which helps to improve utilization rate and reduce usage cost.
[0004] The above-mentioned technical objective of this utility model is mainly achieved through the following technical solution: an interface sealing gasket, characterized in that it includes an elastic sealing gasket and a support frame nested with the elastic sealing gasket, the support frame being annular, the support frame being coaxially arranged with the elastic sealing gasket, the elastic sealing gasket having an upper extension and a lower extension above and below the support frame, the outer diameter of the upper extension and the lower extension being larger than the outer diameter of the support frame.
[0005] The difference in this technical solution lies in changing the shape of the elastic sealing gasket and adding a support frame. First, the addition of a support frame ensures that the elastic sealing gasket deforms axially around the axis of the pipe opening when subjected to axial force, avoiding skewed deformation, which helps ensure sealing performance. Furthermore, the support frame helps protect the elastic sealing gasket, allowing the interface gasket to be reused, improving utilization rate, and reducing usage costs.
[0006] As a further improvement and supplement to the above technical solution, the present invention adopts the following technical measures:
[0007] Preferably, the lower end of the lower extension is a frustoconical annular shape. This is beneficial for improving the elastic deformation capacity of the lower extension. During the tightening process, the elastic sealing gasket is compressed, its thickness decreases appropriately, and its width increases appropriately. This allows the lower end of the frustoconical annular lower extension to deform, which not only better fills the gap and improves the sealing effect, but also avoids excessive compression due to excessive radial dimensions, which could cause damage to the elastic sealing gasket. This is beneficial for improving the service life of the interface gasket. Specifically, after the frustoconical annular shape is subjected to axial compression, it is compressed axially and extends radially outwards significantly. The closer to the end, the smaller the diameter of the elastic sealing gasket, the more severe the deformation, and the more radially outward it extends. By using a frustoconical annular shape, the external space of the frustoconical annular shape can accommodate the radially outwardly extended portion, thereby improving the sealing performance of the elastic sealing gasket and avoiding damage due to excessive radial extension and compression by the surrounding wall, which is beneficial for improving the service life of the elastic sealing gasket.
[0008] Preferably, the included angle α between the lower end face of the lower extension and the inclined surface of the lower extension is 95°~125°. This allows for a more suitable deformation capacity of the lower extension, and after deformation, it can fill the gap at the interface as much as possible, which helps to further improve the sealing performance.
[0009] Preferably, the upper end of the upper extension is a frustoconical annular shape. As a second layer of sealing, the upper extension has a smaller thickness and outer diameter than the lower extension.
[0010] Preferably, the outer diameter of the lower extension is larger than the outer diameter of the upper extension. As the main sealing portion, the lower extension must have a greater thickness and outer diameter than the upper extension.
[0011] Preferably, the elastic sealing gasket has a nesting groove located between the upper extension and the lower extension, and the support frame is embedded in the nesting groove. The nesting groove facilitates the positioning of the support frame, prevents displacement, and thus provides effective support for the elastic sealing gasket, thereby ensuring the sealing effect and service life of the elastic sealing gasket.
[0012] Preferably, the inner diameter of the support frame is larger than the bottom diameter of the nested groove. When the elastic sealing gasket receives radial tightening force, it deforms elastically and is flattened as a whole, with the outer diameter of each part increasing. Therefore, the inner edge of the support frame forms a clearance fit with the bottom of the nested groove to accommodate the enlargement of the elastic material portion of the elastic sealing gasket corresponding to the nested groove. This prevents the rigid support frame from bursting or cutting the elastic material portion corresponding to the nested groove, thereby improving the service life of the elastic sealing gasket and, consequently, the service life of the interface sealing gasket.
[0013] Preferably, the support frame includes a flat ring and a lower folded ring located on the outer edge of the flat ring. The flat ring is disposed in the nesting groove, and the lower folded ring engages with the outer upper end of the lower extension. The flat ring helps ensure that the elastic sealing gasket is subjected to balanced axial force deformation, ensuring that both ends of the elastic sealing gasket form a sealing plane (i.e., two sealing planes are formed). The lower folded ring covers the inner end of the lower extension (i.e., the large-diameter end of the frustoconical annulus).
[0014] Preferably, the lower folded ring and the flat ring are an integral structure, the lower folded ring and the main body of the supporting frame are curved and transitioned, the axial length of the lower folded ring is greater than the thickness of the flat ring, and the thickness of the upper extension is less than the thickness of the lower extension.
[0015] Preferably, the support frame is a metal part, and the lower folding ring cooperates with the upper cylindrical part of the lower extension.
[0016] The beneficial effects of this utility model are as follows: 1. The support frame ensures that the elastic sealing gasket deforms axially around the axis of the connecting pipe opening when subjected to axial force, avoiding skewed deformation, which helps ensure sealing performance. Furthermore, the support frame protects the elastic sealing gasket, allowing for reuse of the interface gasket, improving utilization and reducing operating costs. 2. The support frame fits into the nested groove on the elastic sealing gasket, preventing the interface gasket, composed of two parts, from separating during storage, transportation, and use, thus improving operational efficiency (including storage, transportation, and use) and user experience. 3. Installation is simple and convenient, with good sealing performance. Even without skilled assembly techniques, a good sealing effect can be achieved, improving assembly efficiency and ensuring assembly results. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0018] Figure 2 This is a structural schematic diagram of the present invention from a frontal view.
[0019] Figure 3This is a cross-sectional structural schematic diagram of this utility model.
[0020] Figure 4 This is a schematic diagram of an explosion structure of this utility model applied in practice.
[0021] Figure 5 This is a schematic diagram of a structure in which the outer end of the interface part of this utility model is flat.
[0022] Figure 6 This is a schematic diagram of a structure of the present invention applied to a countersunk hole with a larger outer diameter and a smaller inner diameter at the interface.
[0023] Figure 7 This is a schematic diagram of a structure of this utility model applied to a quick-connect connector.
[0024] In the figure: 1. Elastic sealing gasket; 2. Support frame; 3. Lower extension; 4. Upper extension; 5. Nested groove; 6. Flat ring; 7. Lower folded ring; 8. Workpiece; 9. Bolt; 10. Quick connector; 11. First sealing plane; 12. Second sealing plane. Detailed Implementation
[0025] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.
[0026] Example: Figures 1-3 As shown, an interface sealing gasket includes an elastic sealing gasket 1 and a support frame 2 nested with the elastic sealing gasket 1. The support frame 2 is annular and is coaxially arranged with the elastic sealing gasket 1. The elastic sealing gasket 1 has an upper extension 4 and a lower extension 3 above and below the support frame 2, and the outer diameters of the upper extension 4 and the lower extension 3 are both larger than the outer diameter of the support frame 2.
[0027] The difference between this technical solution and the existing technology lies in changing the shape of the elastic sealing gasket 1 and adding a support frame 2.
[0028] The addition of a support frame 2 ensures that the elastic sealing gasket 1 deforms axially around the axis of the pipe opening when subjected to axial force, avoiding skewed deformation, which helps to ensure sealing performance. Furthermore, the support frame 2 helps to protect the elastic sealing gasket 1, allowing the interface sealing gasket to be reused, which helps to improve utilization and reduce usage costs.
[0029] In practical applications, the lower extension 3 is subjected to axial force and elastically deforms to form a first sealing surface, which plays a major sealing role. The upper extension 4 is also subjected to axial force and elastically deforms to form a second sealing surface, which plays a second safety role in sealing. Therefore, the lower extension 3 is located near the inner end of the connector.
[0030] The above technical solution will then be explained in detail:
[0031] In practical applications, the lower end of the lower extension 3 is shaped like a frustum. This improves the elastic deformation capability of the lower extension 3. During the tightening process, the elastic sealing gasket 1 is compressed, its thickness decreases appropriately, and its width increases appropriately. This allows the lower end of the frustum-shaped lower extension 3 to deform, better filling gaps and improving the sealing effect. It also avoids excessive compression due to excessive radial dimensions, which could cause the elastic sealing gasket 1 to break. This improves the service life of the interface gasket. Specifically, after the frustum-shaped ring is axially compressed, it is axially compressed and radially outwards significantly. The closer to the end, the smaller the diameter of the elastic sealing gasket 1, the more severe the deformation, and the more radially outwards it extends. The frustum-shaped ring allows its external space to accommodate the radially outwardly extended portion, thus improving the sealing performance of the elastic sealing gasket 1 while preventing excessive radial outward extension and compression by the surrounding wall, thereby improving the service life of the elastic sealing gasket 1.
[0032] In practical applications, the included angle α between the lower end face of the lower extension 3 and the inclined surface of the lower extension 3 is 95°~125°.
[0033] In this technical solution, any angle between 95° and 125° is feasible. This allows for a more suitable deformation capacity of the lower extension 3, and after deformation, it can fill the gaps at the interface as much as possible, further improving the sealing performance. In practical applications, the included angle α is preferably 118°±2°. In practical applications, if the included angle α is greater than 90° and less than 95°, or greater than 125° and less than 160°, it also falls within the design scope of this technical solution.
[0034] In practical applications, the upper end of the upper extension 4 is a frustoconical annular shape. The upper extension 4 serves as a second layer of sealing, and its thickness and outer diameter are both smaller than those of the lower extension 3.
[0035] In practical applications, the outer diameter of the lower extension 3 is larger than the outer diameter of the upper extension 4. As the main sealing part, the thickness and outer diameter of the lower extension 3 must both be greater than those of the upper extension 4.
[0036] In practical applications, the elastic sealing gasket 1 has a nested groove 5, which is located between the upper extension 4 and the lower extension 3, and the support frame 2 is embedded in the nested groove 5.
[0037] In this technical solution, a nested groove 5 is provided, which is beneficial for positioning the support frame 2 and preventing the support frame 2 from shifting. This is beneficial for effectively supporting the elastic sealing gasket 1, thereby ensuring the sealing effect and service life of the elastic sealing gasket 1.
[0038] In this technical solution, the support frame 2 is inserted into the nested groove 5 on the elastic sealing gasket 1, so that the interface sealing gasket composed of two parts will not separate during storage, transportation and use, which is beneficial to improving the efficiency of operation (including storage, transportation and use) and the user experience.
[0039] In practical applications, the inner diameter of the support frame 2 is larger than the bottom diameter of the nested groove 5.
[0040] In this technical solution, when the elastic sealing gasket 1 is subjected to radial tightening force, the elastic sealing gasket 1 undergoes elastic deformation and is flattened as a whole, with the outer diameter of each part increasing. For this reason, the inner edge of the support frame 2 forms a clearance fit with the bottom of the nesting groove 5, which facilitates the accommodation of the increased elastic material portion of the elastic sealing gasket 1 corresponding to the nesting groove 5, and avoids the rigid support frame 2 from bursting or cutting the elastic material portion corresponding to the nesting groove 5, thereby improving the service life of the elastic sealing gasket 1 and thus improving the service life of the interface sealing gasket.
[0041] In practical applications, the support frame 2 includes a flat ring 6 and a lower folded ring 7 located on the outer edge of the flat ring 6. The flat ring 6 is disposed in the nesting groove 5, and the lower folded ring 7 is fastened to the outer upper end of the lower extension 3.
[0042] In this technical solution, the flat ring 6 helps to ensure that the elastic sealing gasket 1 is subjected to uniform force deformation along the axial direction, and ensures that both ends of the elastic sealing gasket 1 form a sealing plane (i.e., two sealing planes are formed). The lower folded ring 7 is covered on the inner end of the lower extension 3 (i.e., the large-diameter end of the frustoconical annulus).
[0043] In practical applications, the lower folding ring 7 and the flat ring 6 are an integral structure. The lower folding ring 7 and the main body of the support frame 2 are curved and transitioned. The axial length of the lower folding ring 7 is greater than the thickness of the flat ring 6, and the thickness of the upper extension 4 is less than the thickness of the lower extension 3.
[0044] In practical applications, the support frame 2 is a metal part, and the lower folding ring 7 cooperates with the upper cylindrical part of the lower extension 3.
[0045] Regarding the interface sealing gasket involved in this technical solution, in practical applications, such as Figure 4 and Figure 5 As shown, it can be fitted onto bolt 9 (or onto quick connector 10, as shown). Figure 7 As shown), the bolt 9 is then threadedly connected to the pipe interface on the connecting pipe (or workpiece 8). Since the countersunk hole of the pipe interface is often drilled directly by a drill bit and has a truncated cone portion, it matches the lower end of the truncated cone-shaped ring of the lower extension 3 on the elastic sealing gasket 1 of the interface. During the tightening of the bolt 9, the lower extension 3 is subjected to axial force, forming a first sealing plane 11 at the end of the lower folding ring 7, and the upper extension 4 forms a second sealing plane 12 on the end face of the bolt head 9.
[0046] like Figure 6 As shown, the bolt 9 with the interface sealing gasket is fully sunk into the countersunk hole, and the lower extension 3 is subjected to axial force, forming a first sealing plane 11 at the end of the lower folding ring 7.
[0047] In addition, since the countersunk hole is a flat surface directly drilled by the drill bit, there will be a standard twist drill tip angle after machining. The twist drill tip usually has an angle of 118° ± 2°. Therefore, the included angle α is preferably 118° ± 2°.
[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Various modifications and variations can be made to the above embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An interface sealing gasket, characterized in that... The device includes an elastic sealing gasket (1) and a support frame (2) that is nested with the elastic sealing gasket (1). The support frame (2) is annular and is coaxial with the elastic sealing gasket (1). The elastic sealing gasket (1) has an upper extension (4) and a lower extension (3) above and below the support frame (2). The outer diameters of the upper extension (4) and the lower extension (3) are both larger than the outer diameter of the support frame (2).
2. The interface sealing gasket according to claim 1, characterized in that... The lower end of the lower extension (3) is a frustoconical ring.
3. The interface sealing gasket according to claim 1, characterized in that... The included angle α between the lower end face of the lower extension (3) and the inclined surface of the lower extension (3) is 95°~125°.
4. The interface sealing gasket according to claim 1, characterized in that... The upper end of the upper extension (4) is a frustum-shaped ring.
5. The interface sealing gasket according to claim 1, characterized in that... The outer diameter of the lower extension (3) is greater than the outer diameter of the upper extension (4).
6. The interface sealing gasket according to any one of claims 1-5, characterized in that... The elastic sealing gasket (1) has a nesting groove (5) located between the upper extension (4) and the lower extension (3), and the support frame (2) is embedded in the nesting groove (5).
7. The interface sealing gasket according to claim 6, characterized in that... The inner diameter of the support frame (2) is larger than the bottom diameter of the nested groove (5).
8. The interface sealing gasket according to claim 6, characterized in that... The support frame (2) includes a flat ring (6) and a lower folded ring (7) located on the outer edge of the flat ring (6). The flat ring (6) is disposed in the nested groove (5), and the lower folded ring (7) is fastened to the outer side of the upper end of the lower extension (3).
9. The interface sealing gasket according to claim 8, characterized in that... The lower folding ring (7) and the flat ring (6) are an integral structure. The lower folding ring (7) and the main body of the support frame (2) are curved and transitioned. The axial length of the lower folding ring (7) is greater than the thickness of the flat ring (6), and the thickness of the upper extension (4) is less than the thickness of the lower extension (3).
10. The interface sealing gasket according to claim 9, characterized in that... The supporting frame (2) is a metal part, and the lower folding ring (7) cooperates with the upper cylindrical part of the lower extension (3).