A pressurized self-sealing device

Abstract

The present application relates to air cushion sealing assembly technical field, specifically to a kind of self-sealing device with pressure, the device includes: plug body, inside is formed with inflation passage, top is equipped with support cover, the support cover is equipped with the inflation port of intercommunication inflation passage;Check valve is arranged in inflation passage, with cavity inside one-way communication, to be used for inflating to cavity inside;Plug body outside is equipped with hollow sealing ring, hollow sealing ring is communicated with cavity inside through inflation small hole, during inflation process, hollow sealing ring expands and extrudes installation port inner wall.The present application utilizes the hollow structure of hollow sealing ring, so that the pressure gas in cavity can enter hollow sealing ring, so as to promote hollow sealing ring extruding installation port inner wall by the expansion of hollow sealing ring, thereby ensuring that hollow sealing ring is always combined with installation port inner wall tightly, increase sealing performance, and the higher the pressure, the greater the extrusion force, the stronger the sealing.

Description

Technical Field

[0001] This invention belongs to the technical field of air cushion sealing components, and specifically relates to a pressurized self-sealing device. Background Technology

[0002] Nowadays, air mattresses are becoming increasingly popular due to their advantages such as durability, affordability, and ease of carrying and storage. They are being used more and more widely in various settings, including leisure and entertainment, healthcare, and home life.

[0003] Air mattresses need to be inflated before use. Most air mattresses on the market use an electric air pump nozzle that is aligned with the inflation port. The inflation port of an air mattress is usually a sealed assembly with a built-in one-way valve installed on the installation port of the air mattress.

[0004] Currently, most air mattresses, both domestically and internationally, use devices with solid sealing rings for their sealing components. Their sealing performance relies primarily on the material properties of the sealing ring, the fit clearance, and the elasticity of the sealing ring. However, during daily use, it has been found that as the material ages, the elasticity of the sealing component decreases, making the device prone to air leakage and resulting in poor mattress performance.

[0005] Therefore, in order to solve the problems existing in the prior art, the inventors have developed a pressurized self-sealing device with a self-sealing effect through long-term use research and multiple tests and improvements. This device can ensure that the sealing part is always tightly combined with the cavity wall, increasing the sealing performance of the sealing component; and the higher the pressure inside the air mattress, the stronger the sealing performance of the device, thus keeping the air mattress in a state of sufficient air pressure. The performance is significantly better than that of a solid sealing ring air mattress. Summary of the Invention

[0006] In view of the above problems, the present invention proposes a pressurized self-sealing device. This device is equipped with a hollow sealing ring. Its hollow structure allows pressurized gas inside the cavity to enter the hollow sealing ring, which then expands, causing the sealing ring to press against the inner wall of the mounting opening. This ensures that the hollow sealing ring is always tightly bonded to the cavity wall, increasing the sealing performance. Moreover, the higher the pressure, the greater the extrusion force, and the stronger the sealing performance, preventing gas leakage. The air mattress as a whole maintains a sufficient air pressure, thereby significantly improving the use effect of the air mattress, saving materials, and reducing production costs.

[0007] The specific solution of the present invention is as follows: a pressurized self-sealing device, which is installed at the installation port of an air cushion or air mattress for inflating the cavity, comprising: a plug having an inflation channel formed inside, a supporting cover having a supporting cover having an inflation port communicating with the inflation channel; and a one-way valve installed in the inflation channel, communicating unidirectionally with the cavity for inflating the cavity.

[0008] The plug body is provided with a hollow sealing ring on the outside. The hollow sealing ring is connected to the inside of the cavity through an inflation hole. During the inflation process, pressurized gas in the cavity enters the hollow sealing ring to expand the hollow sealing ring and squeeze the inner wall of the installation port.

[0009] Furthermore, the plug body is provided with a solid sealing ring on its exterior, which is interference-fitted with the inner wall of the mounting port; and the solid sealing ring is located below the hollow sealing ring.

[0010] When the equipment inflates the air mattress through the inflation port, pressurized gas enters the air mattress cavity through the one-way valve. The pressurized gas inside the cavity enters the hollow sealing ring through the inflation hole, causing the hollow sealing ring to expand and press against the inner wall of the mounting opening. This ensures that the hollow sealing ring is always tightly sealed to the inside of the mounting opening, increasing the sealing performance. At the same time, as the pressure increases, the squeezing force of the hollow sealing ring against the inner wall of the mounting opening also gradually increases, further enhancing the sealing performance of the equipment and making the air mattress inflation effect more perfect.

[0011] Furthermore, the pressurized self-sealing device also includes a plug; the plug is adapted to the inflation port to seal the inflation port.

[0012] Furthermore, the plug has a connector on its back, and is movably connected to the outer surface of the support cover via the connector.

[0013] More preferably, the hollow sealing ring is an annular structure with a semi-circular cross-section.

[0014] More preferably, the inflation hole is a long straight hole set inside the plug wall and extending along the plug axis; the bottom end of the inflation hole is connected to the cavity, and the top end extends outward to connect to the hollow sealing ring.

[0015] Furthermore, the solid sealing ring is an annular structure with a semi-circular cross-section, and the solid sealing ring, hollow sealing ring, and plug body are a single integrated structure. The advantage of this integrated design of the solid sealing ring, hollow sealing ring, and plug body is that the components are more compact, the overall stability is higher, and the integrated design helps to save production materials.

[0016] Furthermore, the one-way valve includes a valve core with an air inlet cavity inside; the bottom end of the air inlet cavity is connected to the cavity body, and its top end is connected to the inflation channel through an air inlet hole; a support ring is provided at the bottom of the air inlet cavity, and a spring is provided inside the air inlet cavity; the bottom end of the spring abuts against the support ring, and the top end of the spring presses the check valve ball against the air inlet hole to block the air inlet hole and realize one-way gas flow.

[0017] Furthermore, the air inlet is formed by extending upwards and inwards from the top of the valve core. This facilitates the formation of an arc surface inside the structure, thereby creating a good fit with the check valve ball.

[0018] Furthermore, the one-way valve also includes a sealing plate, with the upper part of the valve core connected to the middle part of the sealing plate, and the outer side of the sealing plate connected to the inner wall of the plug body; and the plug body, valve core, and sealing plate are an integral structure.

[0019] The above-described one or more technical solutions in the embodiments of this application have at least the following technical effects:

[0020] (1) Increase the sealing performance of the air mattress to improve its performance;

[0021] Specifically, the pressurized self-sealing device requires tight pressure against the inner wall of the installation port to achieve a sealing effect;

[0022] The traditional method involves placing a solid sealing ring on the outside of the plug of the sealing component, which is then pressed against the inner wall of the mounting port to form a seal. However, as the material ages, the elasticity of the sealing component decreases, which can easily lead to poor sealing between the sealing component and the inner wall of the mounting port.

[0023] This solution adds a hollow sealing ring to the top of the solid sealing ring of the original air mattress. This hollow structure allows pressurized gas inside the air mattress cavity to enter the hollow sealing ring. As the pressurized gas enters, the hollow sealing ring expands, causing it to press against the inner wall of the mounting opening, thus ensuring that the hollow sealing ring is always tightly bonded to the cavity wall and increasing the sealing performance.

[0024] Furthermore, with this solution, the higher the pressure, the greater the compressive force of the hollow sealing ring, and the stronger the sealing performance, ensuring that the air mattress maintains sufficient air pressure overall, resulting in a significantly better performance than air mattresses with solid sealing rings.

[0025] (2) This solution adopts an integrated structure, saves materials, facilitates production, and reduces production costs;

[0026] Traditional sealing components are typically manufactured separately and then glued together, resulting in a structure that is not compact enough and lacks stability.

[0027] In this solution, the solid sealing ring, hollow sealing ring, plug body, valve core, and sealing plate are designed as an integrated structure, making the overall structure more compact, more stable, and saving materials and reducing production costs.

[0028] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of a self-pressure sealing device according to this solution is shown;

[0031] Figure 2 A schematic diagram showing the combination of the device in this solution with the air mattress is shown;

[0032] Figure 3 A schematic diagram of an existing device is shown;

[0033] Wherein: 1 - one-way valve; 2 - inflation orifice; 3 - hollow sealing ring; 4 - solid sealing ring; 5 - support cover; 6 - plug; 7 - plug body; 8 - inflation channel; 9 - cavity; 10 - valve core; 11 - spring; 12 - check valve ball; 13 - sealing plate; 601 - connector; 901 - inner wall of mounting port; 1001 - air inlet cavity; 1002 - support ring; 1003 - air inlet hole. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that the terms "first," "second," etc., used in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," "longitudinal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings.

[0036] like Figure 1 , Figure 2 As shown, a pressurized self-sealing device includes a plug body 7, a plug 6, and a one-way valve 1. The plug body 7 has an inflation channel 8 inside, and the one-way valve 1 is disposed in the inflation channel 8. The top of the plug body 7 is provided with a support cover 5, and the middle of the support cover 5 is provided with an inflation port that communicates with the inflation channel 8. Gas can be injected into the inflation channel 8 through the inflation port. The gas enters the inflation channel 8 and enters the cavity 9 of the air mattress through the one-way valve 1 to realize the inflation of the air mattress.

[0037] Meanwhile, the plug 6 is detachably installed at the air inlet and is adapted to the air inlet to seal the air inlet.

[0038] In this design, a hollow sealing ring 3 is provided on the outside of the plug body 7. The hollow sealing ring 3 is connected to the inside of the cavity 9 through the inflation hole 2. When the plug 6 is opened and inflated, the gas is injected into the cavity 9 of the air mattress through the one-way valve 1. The pressurized gas inside the cavity 9 enters the hollow sealing ring 4. The hollow sealing ring 4 expands and squeezes the inner wall 901 of the mounting port, thereby ensuring that the hollow sealing ring is always tightly connected with the cavity wall and increasing the sealing performance.

[0039] In this embodiment, a solid sealing ring 4 is also provided on the outside of the plug body 7, and the solid sealing ring 4 is interference-fitted with the inner wall 901 of the mounting port; at the same time, as Figure 1 As shown, the solid sealing ring 4 is positioned below the hollow sealing ring 3. The advantage of this design is that when no air is filled into the cavity 9, the solid sealing ring 4 achieves a preliminary seal with the inner wall 901 of the mounting port; during the inflation process, the solid sealing ring 4 isolates the outside of the hollow sealing ring 3 from the cavity 9, allowing pressurized gas to enter the hollow sealing ring 3 through the inflation hole 2, thereby achieving the purpose of expanding the hollow sealing ring 3.

[0040] In one embodiment of this solution, the hollow sealing ring 3 is an annular structure with a semi-circular cross-section; this solution has multiple small air inlets 2 on the inner wall of the plug body 7.

[0041] In this embodiment, the inflation hole 2 is a long, straight hole extending axially along the plug body 7; the bottom end of the inflation hole 2 connects downward to the cavity 9, and the top end of the inflation hole 2 extends horizontally outward to connect to the hollow sealing ring 4; and the connection between the inflation hole 2 and the hollow sealing ring 4 is located in the middle of the hollow sealing ring 4. The advantage of this design is that it allows pressurized gas to quickly fill the hollow sealing ring 3 through multiple slender inflation holes 2, causing the hollow sealing ring 3 to expand rapidly.

[0042] Optionally, in this solution, the solid sealing ring 4 is an annular structure with a semi-circular cross-section, and the solid sealing ring 4, the hollow sealing ring 3, and the plug body 7 are an integral structure.

[0043] Furthermore, in another embodiment, the plug 6 is interference-fitted with the air inlet, and a connector 601 is provided on the back of the plug 6, which is movably connected to the outer surface of the support cover 5 to prevent the plug 6 from being lost.

[0044] In this embodiment, the cavity 9 is designed to be unidirectional with the outside world. Gas can only enter the cavity 9 from the side of the plug 6, and cannot enter the plug 6 from the cavity 9 in the opposite direction.

[0045] The design advantages of plug 6 are twofold: firstly, plug 6 can seal the air inlet channel 8 when not inflating, preventing dust from entering the equipment; secondly, plug 6 can also serve as an additional sealing structure to prevent rapid air leakage after the one-way valve 1 is damaged.

[0046] Furthermore, in this solution, the one-way valve 1 includes a valve core 10, and an air inlet cavity 1001 is provided inside the valve core 10; the bottom end of the air inlet cavity 1001 is connected to the cavity 9 to facilitate the entry of gas into the cavity 9, and the top end of the air inlet cavity 1001 is connected to the inflation channel 8 through the air inlet hole 1003; a support ring 1002 is also provided at the bottom of the air inlet cavity 1001, and a spring 11 is also provided inside the air inlet cavity 1001.

[0047] Specifically, in this embodiment, the bottom end of the spring 11 abuts against the support ring 1002, and the top end of the spring 11 presses against the check valve ball 12 to push the check valve ball 12 against the air inlet 1003 to block the air inlet 1003 and realize one-way gas flow.

[0048] In another embodiment, the air inlet 1003 is formed by the valve core 10 extending upward and inward from the top, and the inner wall of the extended structure is adapted to the outer surface of the check valve ball 12 to form a good one-way sealing effect.

[0049] In this embodiment, the one-way valve 1 also includes a sealing plate 13, the upper part of the valve core 10 is connected to the middle part of the sealing plate 13, and the outer side of the sealing plate 13 is connected to the inner wall of the plug body 7; and the plug body 7, valve core 10, sealing plate 13, solid sealing ring 4, hollow sealing ring 3, and plug body 7 are all integral structures.

[0050] The inflation steps of this embodiment are as follows: First, insert the plug 7 into the installation port of the air cushion or air mattress, so that the support cover 5 is pressed against the outer edge of the installation port; open the plug 6, connect the inflation nozzle of the inflation device to the inflation port, and then turn on the inflation device to inflate the cavity 9 with gas; after inflation is completed, remove the inflation device, and finally plug the plug 6 back in.

[0051] Based on the above technical solutions, one or more of the technical solutions in the embodiments of this application have at least the following technical effects:

[0052] (1) Increase the sealing performance of the air mattress to improve its performance;

[0053] Specifically, the pressurized self-sealing device requires tight pressure against the inner wall of the installation port to achieve a sealing effect;

[0054] The traditional method involves placing a solid sealing ring on the outside of the plug of the sealing component, which is then pressed against the inner wall of the mounting port to form a seal. However, as the material ages, the elasticity of the sealing component decreases, which can easily lead to poor sealing between the sealing component and the inner wall of the mounting port.

[0055] This solution adds a hollow sealing ring to the top of the solid sealing ring of the original air mattress. This hollow structure allows pressurized gas inside the air mattress cavity to enter the hollow sealing ring. As the pressurized gas enters, the hollow sealing ring expands, causing it to press against the inner wall of the mounting opening, thus ensuring that the hollow sealing ring is always tightly bonded to the cavity wall and increasing the sealing performance.

[0056] Furthermore, with this solution, the higher the pressure, the greater the compressive force of the hollow sealing ring, and the stronger the sealing performance, ensuring that the air mattress maintains sufficient air pressure overall, resulting in a significantly better performance than air mattresses with solid sealing rings.

[0057] (2) This solution adopts an integrated structure, saves materials, facilitates production, and reduces production costs;

[0058] Traditional sealing components are typically manufactured separately and then glued together, resulting in a structure that is not compact enough and lacks stability.

[0059] In this solution, the solid sealing ring, hollow sealing ring, plug body, valve core, and sealing plate are designed as an integrated structure, making the overall structure more compact, more stable, and saving materials and reducing production costs.

[0060] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pressurized self-sealing device, wherein the device is disposed at the mounting port of an air cushion or air mattress for inflating a cavity (9), characterized in that, include: The plug (7) has an inflation channel (8) inside and a support cover (5) on its top. The support cover (5) has an inflation port that connects to the inflation channel (8). A one-way valve (1) is installed in the inflation channel (8) and communicates unidirectionally with the inside of the cavity (9) for inflation into the cavity (9); The plug body (7) is provided with a hollow sealing ring (4) on the outside. The hollow sealing ring (4) is connected to the inside of the cavity (9) through the inflation hole (2). During the inflation process, the pressurized gas in the cavity (9) enters the hollow sealing ring (4) to expand the hollow sealing ring (4) and squeeze the inner wall (901) of the mounting port. The hollow sealing ring (4) is a ring structure with a semi-circular cross-section. The inflation hole (2) is a long straight hole set in the wall of the plug body (7) and extending along the axial direction of the plug body (7). The bottom end of the inflation hole (2) is connected to the cavity (9), and the top end extends outward to connect to the hollow sealing ring (4). The plug body (7) is also provided with a solid sealing ring (3) on the outside, and the solid sealing ring (3) is interference-fitted with the inner wall (901) of the mounting port; Furthermore, the solid sealing ring (3) is located below the hollow sealing ring (4); The solid sealing ring (3) is a ring structure with a semi-circular cross-section, and the solid sealing ring (3), hollow sealing ring (4), and plug (7) are an integral structure.

2. The pressurized self-sealing device according to claim 1, characterized in that, The pressurized self-sealing device also includes a plug (6); The plug (6) is adapted to the air inlet for sealing the air inlet.

3. The pressurized self-sealing device according to claim 2, characterized in that, The plug (6) has a connector (601) on its back, and is movably connected to the outer surface of the support cover (5) via the connector (601).

4. The pressurized self-sealing device according to claim 1, characterized in that, The one-way valve (1) includes a valve core (10), and an air inlet cavity (1001) is provided inside the valve core (10). The bottom end of the air intake cavity (1001) is connected to the cavity (9), and the top end is connected to the inflation channel (8) through the air intake hole (1003); The bottom of the air intake cavity (1001) is provided with a support ring (1002), and a spring (11) is provided inside the air intake cavity (1001). The bottom end of the spring (11) rests against the support ring (1002), and the top end of the spring (11) presses the check valve ball (12) against the air inlet (1003) to block the air inlet (1003) and realize the one-way flow of gas.

5. A pressurized self-sealing device according to claim 4, characterized in that, The air inlet (1003) is formed by the valve core (10) extending upward and inward from the top.

6. A pressurized self-sealing device according to claim 1, characterized in that, The one-way valve (1) also includes a sealing plate (13), the upper part of the valve core (10) is connected to the middle part of the sealing plate (13), and the outer side of the sealing plate (13) is connected to the inner wall of the plug (7); Furthermore, the plug body (7), valve core (10), and sealing plate (13) are an integral structure.

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