Container opening sealing structure and container
By incorporating an annular protrusion and double-layer sealing gaskets on the inner wall of the container opening, the problem of leakage at the container opening is solved, achieving a double seal of the container, preventing liquid leakage, and improving the sealing effect and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN YISI TECH CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-05-12
AI Technical Summary
Existing technologies often use a method of directly placing an annular gasket between the container opening and the container lid for sealing, which results in leakage problems between the inner wall of the container and the container lid, posing environmental pollution and safety hazards.
A ring-shaped boss is provided around the inner wall of the container opening, and first and second sealing gaskets are provided between the container opening and the container cover. The ring-shaped flange of the pressing part and the protrusion form a complex leakage path, and a second sealing gasket is added to seal the gap, forming a double sealing structure.
It effectively prevents liquid leakage, eliminates the possibility of seepage at the container opening, improves the sealing effect, and avoids environmental pollution and safety hazards.
Smart Images
Figure CN224225710U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of container sealing technology, and in particular to a container opening sealing structure and a container. Background Technology
[0002] Oil tanks or other containers used to hold liquids require a sealing structure at their openings to prevent leakage after the container is closed. In developing this application, the inventors discovered that existing technologies have at least the following problems: Existing technologies often use a method of directly placing an annular gasket between the container opening and the container lid for sealing, or, in some structures with filter plugs, placing an annular gasket between the annular flange of the filter plug and the container opening. While this sealing structure can reduce leakage to some extent, leakage problems still occur. A certain degree of leakage can still occur in the gap between the inner wall of the container and the container lid. Leakage problems may lead to environmental pollution, and in severe cases, may even pose safety hazards. Summary of the Invention
[0003] Based on this, this application provides a container opening sealing structure and a container to better solve the problem of easy leakage at the container opening.
[0004] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:
[0005] On the one hand, embodiments of this application provide a container opening sealing structure, including an annular boss, a first sealing gasket, a second sealing gasket, and a pressing member;
[0006] The annular boss is circumferentially arranged along the inner wall of the container opening, and the side wall of the container opening extends outward from the outer surface of the annular boss along the axial direction of the container opening to form a protrusion.
[0007] The pressing member includes a body portion and an annular flange located at one end of the body portion; the pressing member is used to partially insert into the container opening, and the annular flange is located outside the annular boss;
[0008] The first sealing gasket is used to be installed between the annular flange and the annular boss, and the second sealing gasket is used to abut against the outer surface of the end of the annular flange and the protrusion.
[0009] In one embodiment, the annular flange is formed by extending radially outward from the outer wall of the body portion, the outer diameter of the annular flange is smaller than the inner diameter of the protrusion, and the outer diameter of the body portion is smaller than the inner diameter of the annular boss.
[0010] In one embodiment, the circumferential inner wall of the first sealing gasket is used to abut against the body portion, the circumferential outer wall of the first sealing gasket is used to abut against the inner sidewall of the protrusion, the axial inner wall of the first sealing gasket is used to abut against the annular boss, and the axial outer wall of the first sealing gasket is used to abut against the annular flange.
[0011] In one embodiment, the outer diameter of the second sealing gasket is the same as the outer diameter of the protrusion, and the inner diameter of the second sealing gasket is smaller than the inner diameter of the protrusion.
[0012] On the other hand, embodiments of this application provide a container, including a container body, a container lid, and a container opening sealing structure as described above. The container body is provided with a container opening, the container lid is used to cover the container opening, and the container opening sealing structure is disposed between the container opening and the container lid to seal the container opening.
[0013] In one embodiment, the container cap is threaded to the container opening, the outer wall of the second sealing gasket abuts against the inner wall of the container cap along the axial direction, and the inner wall of the second sealing gasket abuts against the surface of the annular flange and the protrusion near the container cap along the axial direction.
[0014] In one embodiment, the inner surface of the container lid is provided with an annular groove for installing the second sealing gasket.
[0015] In one embodiment, the inner surface of the container lid is provided with an annular pressing platform, the pressing platform protruding from the inner surface of the container lid, and the annular groove is formed between the pressing platform and the inner sidewall of the container lid. The pressing platform is used to abut against the annular flange when the container lid is placed on the container opening.
[0016] In one embodiment, the container further includes a filter plug, which includes the pressing member and a filter screen disposed on the body portion.
[0017] In one embodiment, the container further includes a vent plug, a vent hole is provided at the center of the container lid, and an annular mounting portion is provided on the inner surface of the container lid. The inner cavity of the mounting portion is connected to the vent hole, and the mounting portion is used to install the vent plug.
[0018] This application has at least the following beneficial effects: The container opening sealing structure provided by this application, based on the original container structure, adds a ring-shaped protrusion to the inner wall of the container opening. This ring-shaped protrusion is a certain distance from the top edge of the container opening, creating an installation space between the ring-shaped protrusion and the protrusion. The ring-shaped flange of the pressing member presses the first sealing gasket onto the ring-shaped protrusion, forming the first seal. This first sealing structure makes the liquid leakage path tortuous and complex, forming the first barrier against liquid leakage. Even if leakage still occurs under these conditions, it can only leak outwards along the gap between the protrusion and the ring-shaped flange. Furthermore, this application adds a second sealing gasket, which simultaneously abuts against the outer surfaces of both the protrusion and the ring-shaped flange, sealing the gap between them and forming the second barrier against liquid leakage. This completely seals off the liquid leakage path, eliminating the possibility of leakage at the container opening. The container provided by this application includes the aforementioned container opening sealing structure and therefore also possesses the aforementioned beneficial effects. Attached Figure Description
[0019] Figure 1 This is a cross-sectional view of the container opening sealing structure according to an embodiment of this application.
[0020] Figure 2 This is an exploded view of the container according to an embodiment of this application.
[0021] Figure 3 This is a schematic diagram of the structure of the container opening in an embodiment of this application.
[0022] Figure 4 This is a schematic diagram of the overall structure of the container according to an embodiment of this application.
[0023] Figure 5 This is a cross-sectional view of the container lid according to an embodiment of this application.
[0024] Figure 6 This is a schematic diagram of the possible liquid leakage path of the container in an embodiment of this application.
[0025] The meanings of the labels in the attached diagram are as follows:
[0026] 1. Container body; 11. Container opening; 12. Annular boss; 13. Protrusion;
[0027] 2. Container lid; 21. Lower pressure platform; 22. Vent hole; 23. Mounting part; 24. Annular groove;
[0028] 3. First sealing gasket; 4. Second sealing gasket;
[0029] 5. Pressing part; 51. Body part; 52. Annular flange; 6. Vent plug. Detailed Implementation
[0030] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the ways in which this application may be implemented. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0032] In the description of this application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are used 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, and therefore should not be construed as a limitation on this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0034] Please see Figure 1 and Figure 2 The sealing structure of the container opening 11 in this embodiment includes an annular boss 12, a first sealing gasket 3, a second sealing gasket 4, and a pressing member 5.
[0035] like Figure 3 As shown, the annular boss 12 is circumferentially arranged along the inner wall of the container opening 11, and the side wall of the container opening 11 extends outward from the outer surface of the annular boss 12 along the axial direction of the container opening 11 to form a protrusion 13. That is, the annular boss 12 is located slightly lower than the container opening 11, rather than being flush with the edge of the container opening 11. The structure of the container opening 11 itself remains unchanged except for the addition of an annular boss 12.
[0036] like Figure 1 and Figure 2As shown, the pressing member 5 includes a body portion 51 and an annular flange 52 located at one end of the body portion 51. The body portion 51 and the annular flange 52 can be integrally formed. The pressing member 5 is used to partially insert into the container opening 11, and the annular flange 52 is located outside the annular boss 12. Specifically, the annular flange 52 is formed by extending radially outward from the outer side wall of one end of the body portion 51. The outer diameter of the annular flange 52 is substantially equal to the inner diameter of the protrusion 13. For example, the outer diameter of the annular flange 52 can be slightly smaller than the inner diameter of the protrusion 13, so as to facilitate the installation of the annular flange 52 in the inner cavity of the protrusion 13. The outer diameter of the body portion 51 is slightly smaller than the inner diameter of the annular boss 12, so as to facilitate the insertion of the body portion 51 into the container opening 11 from the inner cavity of the annular boss 12. The annular flange 52 is located outside the annular boss 12 (on the side closer to the container cap 2, that is, above the annular boss 12 in the figure).
[0037] The first sealing gasket 3 is used to be installed between the annular flange 52 and the annular boss 12, and the second sealing gasket 4 is used to abut against the outer surface of the end of the annular flange 52 and the protrusion 13.
[0038] The first sealing gasket 3 and the second sealing gasket 4 can be made of materials such as nitrile rubber, hydrogenated nitrile rubber, fluororubber, or silicone rubber.
[0039] The circumferential inner wall of the first sealing gasket 3 abuts against the body portion 51, the circumferential outer wall of the first sealing gasket 3 abuts against the inner side wall of the protrusion 13, the axial inner wall of the first sealing gasket 3 abuts against the annular boss 12, and the axial outer wall of the first sealing gasket 3 abuts against the annular flange 52. That is, after the first sealing gasket 3 is installed, the side wall of its inner hole abuts against the body portion 51, the side wall of its outer circle abuts against the inner side wall of the protrusion 13, its upper surface abuts against the lower surface of the annular flange 52, and its lower surface abuts against the upper surface of the annular boss 12, thereby forming a good first leak-proof barrier for the container opening 11. For ease of installation, the first sealing gasket 3 can be fitted onto the body portion 51 of the pressing member 5, and positioned near the annular flange 52. When the pressing member 5 is inserted into the container opening 11, the first sealing gasket 3 can be installed in place together with it.
[0040] The outer diameter of the second sealing gasket 4 is basically the same as the outer diameter of the protrusion 13, and the inner diameter of the second sealing gasket 4 is smaller than the inner diameter of the protrusion 13. The purpose of setting the inner diameter of the second sealing gasket 4 to be smaller than the inner diameter of the protrusion 13 is to make the wall thickness of the second sealing gasket 4 greater than the wall thickness of the protrusion 13. In this way, the second sealing gasket 4 can cover the gap formed between the protrusion 13 and the annular flange 52, thereby forming a second leak-proof barrier for the container opening 11.
[0041] In this embodiment, the sealing structure of the container opening 11 adds an annular boss 12 to the original structure of the container opening 11, and a first sealing gasket 3 is placed above the annular boss 12. A pressing member 5 is pressed onto the first sealing gasket 3. At this time, if the liquid wants to seep out, there are two paths (such as...). Figure 6 As shown, the first path L1 passes through the gap between the annular boss 12 and the body 51, then through the gap between the first sealing gasket 3 and the annular boss 12, and finally through the gap between the protrusion 13, the first sealing gasket 3, and the annular flange 52. The second path L2 passes through the gap between the annular boss 12, the first sealing gasket 3, and the body 51, then through the gap between the first sealing gasket 3 and the annular flange 52, and finally through the gap between the annular flange 52 and the protrusion 13. Both paths L1 and L2 are very tortuous and complex, making it difficult for liquid to leak out. Furthermore, this embodiment also includes a second sealing gasket 4, which can be pressed against the final possible leak point by the container cap 2, preventing liquid from leaking out.
[0042] like Figure 2 and Figure 4 As shown, this application embodiment also provides a container, such as an oil tank. The container in this embodiment includes a container body 1, a container lid 2, and a sealing structure for the container opening 11 as described in the above embodiment. The container body 1 is provided with a container opening 11, the container lid 2 is used to cover the container opening 11, and the sealing structure for the container opening 11 is disposed between the container opening 11 and the container lid 2 to seal the container opening 11.
[0043] In some embodiments, the container cap 2 is threadedly connected to the container opening 11, the side wall of the container cap 2 is provided with an internal thread, and the outer side wall of the container opening 11 is provided with an external thread for cooperation.
[0044] like Figure 1 As shown, the outer wall of the second sealing gasket 4 abuts against the inner wall of the container cap 2 along the axial direction, and the inner wall of the second sealing gasket 4 abuts against the surface of the annular flange 52 and the protrusion 13 near the container cap 2 along the axial direction. That is, the upper surface of the second sealing gasket 4 abuts against the top inner wall of the container cap 2, and the lower surface of the second sealing gasket 4 abuts against the upper surfaces of the annular flange 52 and the protrusion 13, respectively. The container cap 2 presses the second sealing gasket 4 tightly above the container opening 11, thereby effectively preventing liquid leakage.
[0045] like Figure 1 and Figure 5As shown, to facilitate the installation of the second sealing gasket 4, an annular groove 24 can be provided on the inner surface of the container cap 2. The annular groove 24 is used to install the second sealing gasket 4. When the second sealing gasket 4 is inserted into the annular groove 24 and the container cap 2 is tightened with the container opening 11, the second sealing gasket 4 can abut against the upper surface of the protrusion 13 and the annular flange 52. The outer diameter of the annular groove 24 is basically the same as the outer diameter of the protrusion 13, and the inner diameter of the annular groove 24 is smaller than the inner diameter of the protrusion 13 and larger than the inner diameter of the annular flange 52.
[0046] To improve the sealing effect of the container opening 11, an annular pressing platform 21 can be provided on the inner surface of the container lid 2. The pressing platform 21 protrudes from the inner surface of the top of the container lid 2, that is, the pressing platform 21 protrudes from the inner wall of the top of the container lid 2 toward the container opening 11. An annular groove 24 for installing the second sealing gasket 4 is formed between the pressing platform 21 and the inner wall of the container lid 2. The pressing platform 21 is used to abut against the annular flange 52 when the container lid 2 is placed on the container opening 11, so that the annular flange 52 presses the first sealing gasket 3, forming a good sealing structure for the container opening 11. When the container lid 2 presses the annular flange 52, the upper surface of the annular flange 52 is basically flush with the upper surface of the protrusion 13, so that the second sealing gasket 4 forms a good seal for the gap between them.
[0047] like Figure 2 As shown, in some embodiments, the container further includes a filter plug, which includes the pressing member 5 of the above embodiments and a filter screen (not shown) disposed on the body portion 51 of the pressing member 5.
[0048] like Figure 1 and Figure 5 As shown, in some embodiments, the container also includes a vent plug 6, a vent hole 22 is provided at the center of the container cover 2, and an annular protrusion mounting part 23 is provided on the inner surface of the container cover 2. The inner cavity of the mounting part 23 is connected to the vent hole 22, and the mounting part 23 is used to install the vent plug 6.
[0049] The container opening sealing structure and container of this application embodiment can complicate the leakage path of liquid, thereby forming a good seal at the container opening and effectively preventing liquid leakage. Furthermore, the container opening sealing structure is simple, has low manufacturing cost, and is very convenient to install.
[0050] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0051] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A container opening sealing structure, characterized in that, It includes an annular boss, a first sealing gasket, a second sealing gasket, and a pressing component; The annular boss is circumferentially arranged along the inner wall of the container opening, and the side wall of the container opening extends outward from the outer surface of the annular boss along the axial direction of the container opening to form a protrusion. The pressing member includes a body portion and an annular flange located at one end of the body portion; the pressing member is used to partially insert into the container opening, and the annular flange is located outside the annular boss; The first sealing gasket is used to be installed between the annular flange and the annular boss, and the second sealing gasket is used to abut against the outer surface of the end of the annular flange and the protrusion.
2. The container opening sealing structure as described in claim 1, characterized in that, The annular flange is formed by extending radially outward from the outer wall of the body portion. The outer diameter of the annular flange is smaller than the inner diameter of the protrusion, and the outer diameter of the body portion is smaller than the inner diameter of the annular boss.
3. The container opening sealing structure as described in claim 2, characterized in that, The circumferential inner wall of the first sealing gasket is used to abut against the body portion, the circumferential outer wall of the first sealing gasket is used to abut against the inner side wall of the protrusion, the axial inner wall of the first sealing gasket is used to abut against the annular boss, and the axial outer wall of the first sealing gasket is used to abut against the annular flange.
4. The container opening sealing structure as described in claim 2, characterized in that, The outer diameter of the second sealing gasket is the same as the outer diameter of the protrusion, and the inner diameter of the second sealing gasket is smaller than the inner diameter of the protrusion.
5. A container, characterized in that, The container includes a container body, a container cap, and a container opening sealing structure as described in any one of claims 1 to 4, wherein the container body has a container opening, the container cap is used to cover the container opening, and the container opening sealing structure is disposed between the container opening and the container cap to seal the container opening.
6. The container as claimed in claim 5, characterized in that, The container cap is threaded to the container opening, the outer wall of the second sealing gasket abuts against the inner wall of the container cap along the axial direction, and the inner wall of the second sealing gasket abuts against the surface of the annular flange and the protrusion near the container cap along the axial direction.
7. The container as claimed in claim 5, characterized in that, The inner surface of the container lid is provided with an annular groove, which is used to install the second sealing gasket.
8. The container as claimed in claim 7, characterized in that, The inner surface of the container lid is provided with an annular pressing platform, which protrudes from the inner surface of the container lid. An annular groove is formed between the pressing platform and the inner sidewall of the container lid. The pressing platform is used to abut against the annular flange when the container lid is placed on the container opening.
9. The container as claimed in claim 5, characterized in that, It also includes a filter plug, which includes the pressing member and a filter screen disposed on the body portion.
10. The container as claimed in claim 5, characterized in that, It also includes a vent plug, with a vent hole at the center of the container cap and an annular mounting portion on the inner surface of the container cap. The inner cavity of the mounting portion is connected to the vent hole, and the mounting portion is used to install the vent plug.