Air valve and air cushion

Abstract

The utility model provides an air valve and an air cushion, which relates to the technical field of air cushion air valves, and comprises a valve body, a valve core, a cover body and a pressure relief structure, a valve body channel is formed in the valve body, and a first valve port and a second valve port which are communicated with the valve body channel are further formed in the valve body; a valve element channel axially penetrating through the first end of the valve element and the second end of the valve element is arranged in the valve element, and a sealing component used for opening or closing the valve element channel is installed in the valve element channel. The first end of the valve element is inserted into the first valve port, and the outer circumferential face of the valve element is in threaded connection with the inner circumferential face of the first valve port. The cover body covers a port of the second end of the valve element. The pressure relief structure comprises at least one pressure relief groove formed in the peripheral face of the first end of the valve element, and the pressure relief groove extends in the axial direction of the valve element and partitions a threaded groove formed in the peripheral face of the first end of the valve element. The air cushion air valve at least solves the technical problem that normal use of an air cushion is affected due to the fact that an existing air cushion air valve is prone to being ejected to fly under high pressure.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air cushion air valve, especially to an air valve and air cushion. BACKGROUND

[0002] With the popularity of outdoor sports and high-intensity work, air cushions, as an important buffer and support equipment, have continuously expanded their application scenarios. For example, as a special type of air cushion, the pull-out air cushion has been widely used in high-pressure environments due to its unique structure and function. The pull-out air cushion is usually made of high-strength materials and filled with high-pressure gas to provide better support and buffering effect. However, the existing air valves are usually designed according to low-pressure air cushions, and the release and closure of low-pressure gas are achieved by rotating the knob cover. However, in air cushions such as pull-out air cushions that are filled with high-pressure gas, this design has the following problems:

[0003] (1) Under high internal pressure, the air valve is easily blown away due to excessive pressure, which affects the effective control of the gas and the normal use of the air cushion;

[0004] (2) The components of the air valve may be loose or dispersed due to vibration or pressure changes in the high-pressure environment, further affecting the function and safety of the air cushion;

[0005] (3) During the use of the air cushion, the internal filler (such as the wire inside the pull-out air cushion) may overflow from the air cushion, affecting the durability and service life of the air cushion;

[0006] (4) The traditional knob cover design is not convenient to operate, and users need to spend a lot of time and effort to complete the adjustment of the gas, resulting in poor user experience;

[0007] These problems seriously affect the performance and user experience of the air cushion. SUMMARY

[0008] The purpose of the utility model is to provide an air valve and air cushion to alleviate at least one of the above technical problems in the prior art.

[0009] To achieve the above purpose, the utility model embodiment adopts the following technical scheme:

[0010] In a first aspect, the utility model provides an air valve, comprising:

[0011] a valve body having a valve body passage inside, and a first valve port and a second valve port in communication with the valve body passage;

[0012] a valve core, which is internally provided with a valve core channel penetrating through the valve core first end and the valve core second end in the axial direction, and is internally provided with a sealing component for opening or closing the valve core channel; the valve core first end is inserted into the first valve port and the outer circumferential surface thereof is threadedly connected to the inner circumferential surface of the first valve port, and the valve core second end is located on the side of the valve body close to the first valve port;

[0013] a cover body, which covers the port of the valve core second end;

[0014] and a pressure relief structure, which comprises at least one pressure relief groove provided on the outer circumferential surface of the valve core first end, the pressure relief groove extends along the axial direction of the valve core and separates the thread groove provided on the outer circumferential surface of the valve core first end.

[0015] In an optional embodiment, the pressure relief groove has a first end facing the valve core first end and a second end facing the valve core second end, and extends along the axial direction of the valve core:

[0016] the thread groove extends to the edge of the valve core first end in the direction of the valve core first end;

[0017] and / or, the thread groove extends to the second end edge of the pressure relief groove in the direction of the valve core second end, or extends to the part of the valve core between the second end edge of the pressure relief groove and the valve core second end edge in the direction of the valve core second end.

[0018] In an optional embodiment, the gas valve further comprises an isolation cover, which is connected to the second valve port of the valve body in abutment or one-piece; and a plurality of hollow parts are provided on the surface of the isolation cover.

[0019] In an optional embodiment, the outer circumferential surface of the valve core is provided with a rotation boss protruding outward in the radial direction of the valve core; wherein: a plurality of anti-skid protrusions are provided on the outer circumferential surface of the rotation boss; and / or, the gas valve further comprises a valve seat provided on the outer circumferential surface of the valve body, and a sealing ring is provided on the surface of the valve seat in contact with the rotation boss.

[0020] In an optional embodiment, the gas valve further comprises a valve seat provided on the outer circumferential surface of the valve body, and the gas valve further comprises a locking connector connecting the cover body and the valve seat.

[0021] In an optional embodiment, the outer circumferential surface of the valve seat is provided with a first positioning groove extending in the circumferential direction of the valve seat, and the outer circumferential surface of the valve core second end is provided with a second positioning groove extending in the circumferential direction of the valve core;

[0022] The anti-loosening connector includes at least a first elastic ring, a second elastic ring, and a first elastic connecting strip connecting the first elastic ring and the elastic ring. The first elastic ring is nested inside the first positioning groove, and the second elastic ring is nested inside the second positioning groove.

[0023] In an optional embodiment, the cover includes a body that covers the port of the second end of the valve core and a top protrusion provided on the side surface of the body opposite to the valve core, wherein a third positioning groove is formed between the top protrusion and the body.

[0024] The anti-loosening connector also includes a third elastic ring and a second elastic connecting strip connecting the third elastic ring and the second elastic ring, wherein the third elastic ring is nested inside the third positioning groove.

[0025] In an optional embodiment, the cover is snapped onto the port at the second end of the valve core in a pressing manner.

[0026] In an optional embodiment, the sealing component includes a porous plate and an elastic membrane;

[0027] The perforated plate is fixed or integrally connected to the inner wall of the valve core channel along the radial direction of the valve core, and the through holes on the perforated plate connect the two sides of the perforated plate to connect the valve core channel.

[0028] The elastic diaphragm is fixedly installed on the side of the perforated plate facing the first end of the valve core by a limiting member. With the gas pressure on the side of the perforated plate facing the first end of the valve core as Pa1 and the gas pressure on the side of the perforated plate facing the second end of the valve core as Pa2, then, under the working condition: when Pa2 > Pa1, the elastic diaphragm undergoes elastic deformation, creating a gap between itself and the through-hole of the perforated plate to open the valve core channel; when Pa1 ≥ Pa2, the elastic diaphragm automatically covers the through-hole of the perforated plate under elastic restoring force to close the valve core channel.

[0029] Secondly, this utility model provides an air cushion, including the air valve described in any of the foregoing embodiments.

[0030] Specifically, in the present invention, the term "and / or" indicates that the structure before "and / or" and the structure after "and / or" are set simultaneously or selectively.

[0031] The air valve and air cushion provided by this utility model can achieve at least the following beneficial effects:

[0032] In use, the air valve provided by this utility model is installed on the air cushion with the second valve port facing inward. During inflation, the cover is opened, and air is injected into the valve core channel from the port at the second end of the valve core. The gas flows through the first end of the valve core, the first valve port, and the second valve port, and enters the air cushion through the sealing component and the valve body channel. After inflation, a seal is achieved by inserting the first end of the valve core into the first valve port and threading its outer circumferential surface to the inner circumferential surface of the first valve port, and by sealing the port at the second end of the valve core with the cover. In the sealed state, the angle of rotation of the valve core relative to the valve body allows the threaded groove on the outer circumferential surface of the valve core to fit tightly with the threaded groove on the inner circumferential surface of the valve body. When the internal pressure of the air cushion is too high, the relative position of the two mating threaded grooves can be changed by rotating the valve core relative to the valve body, creating a gap between the mating threaded grooves. A small amount of gas is then released through the pressure relief groove to release excess gas and achieve the pressure relief function. After pressure relief, the valve core is rotated back to reseal the air cushion.

[0033] Optionally, the above function can be achieved by controlling parameters such as the height of the threaded groove on the outer circumferential surface of the valve core and the threaded groove on the outer circumferential surface of the valve body. Similarly, some intermittent grooves that can disconnect the threaded grooves can be provided on the outer circumferential surface of the valve body. In the sealed state, these intermittent grooves are not connected with the pressure relief grooves. Rotating the valve core relative to the valve body can make the two connected to each other to achieve the pressure relief function.

[0034] The air valve provided by this utility model can prevent the air cushion from being blown away due to excessive internal gas pressure, effectively improving the stability of the air valve during inflation and deflation (especially deflation) under high internal pressure, so that the air cushion can be used normally.

[0035] In addition, some optional embodiments of this utility model can alleviate other problems, and their specific structure and functional effects will be described in detail in the specific embodiments section of this specification. Attached Figure Description

[0036] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 A schematic diagram of the overall structure of the air valve provided in Embodiment 1 of this utility model. Figure 1 ;

[0038] Figure 2 The air valve provided in Embodiment 1 of this utility model is Figure 1An exploded view of the overall structure from a specific perspective;

[0039] Figure 3 A schematic diagram of the overall structure of the air valve provided in Embodiment 1 of this utility model. Figure 2 ;

[0040] Figure 4 The air valve provided in Embodiment 1 of this utility model is Figure 3 A frontal sectional view taken from a normal angle;

[0041] Figure 5 A schematic diagram of the overall structure of the valve core in the air valve provided in Embodiment 1 of this utility model. Figure 1 ;

[0042] Figure 6 A schematic diagram of the overall structure of the valve core in the air valve provided in Embodiment 1 of this utility model. Figure 2 ;

[0043] Figure 7 The valve core in the air valve provided in Embodiment 1 of this utility model is Figure 3 Top view when viewed from a normal angle;

[0044] Figure 8 for Figure 7 Sectional view along axis AA;

[0045] Figure 9 This is a schematic diagram of the overall structure of the air valve provided in Embodiment 2 of this utility model;

[0046] Figure 10 This is a schematic diagram of the overall structure of the isolation cover in the air valve provided in Embodiment 2 of this utility model;

[0047] Figure 11 This is a schematic diagram of the overall structure of the valve core in the air valve provided in Embodiment 2 of this utility model.

[0048] Icons: 1-Valve body; 101-First valve port; 102-Second valve port; 11-Isolation cover; 12-Valve seat; 121-Sealing ring; 2-Valve core; 201-First end of valve core; 202-Second end of valve core; 21-Threaded groove; 22-Pressure relief groove; 23-Rotating boss; 231-Anti-slip protrusion; 31-Perforated plate; 311-Limiting rod sleeve; 32-Elastic membrane; 33-Limiting rod; 331-Limiting protrusion; 4-Cover; 41-Body; 42-Top protrusion; 43-Side handle; 5-Anti-loosening connector; 501-First positioning groove; 502-Second positioning groove; 503-Third positioning groove; 51-First elastic connecting band; 52-Second elastic connecting band; 53-First elastic ring; 54-Second elastic ring; 55-Third elastic ring. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0051] It should be noted that similar labels and letters in the accompanying drawings indicate similar items. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.

[0052] In the description of this utility model, it should be noted that the terms "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0053] Furthermore, the terms "horizontal" and "vertical" do not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0054] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0055] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0056] First aspect

[0057] This embodiment provides a gas valve, as shown in the reference. Figures 1 to 8 The valve includes a valve body 1, a valve core 2, a cover 4, and a pressure relief structure. Specifically: the valve body 1 has a valve body channel inside, and the valve body 1 also has a first valve port 101 and a second valve port 102 communicating with the valve body channel. The valve core 2 has a valve core channel axially penetrating the first end 201 and the second end 202 of the valve core, and a sealing component for opening or closing the valve core channel is installed inside the valve core channel; the first end 201 of the valve core is inserted into the first valve port 101 and its outer circumferential surface is threaded to the inner circumferential surface of the first valve port 101, and the second end 202 of the valve core is located on the side of the valve body 1 near the first valve port 101; the cover 4 covers the port of the second end 202 of the valve core. In particular, the valve is provided with a pressure relief structure, which includes at least one pressure relief groove 22 provided on the outer circumferential surface of the first end 201 of the valve core, the pressure relief groove 22 extending axially along the valve core 2 and interrupting the threaded groove 21 provided on the outer circumferential surface of the first end 201 of the valve core.

[0058] In use, the air valve provided in this embodiment is installed on the air cushion with the second valve port 102 facing the inside of the air cushion. When inflating, the cover 4 is opened to inflate the valve core channel from the port of the second end 202 of the valve core. The gas flows through the first end 201 of the valve core, the first valve port 101 and the second valve port 102, and enters the air cushion through the sealing component and the valve body channel. After inflation, the air is sealed by inserting the first end 201 of the valve core into the first valve port 101 and threading its outer circumferential surface to the inner circumferential surface of the first valve port 101, and by sealing the port of the second end 202 of the valve core with the cover 4. In the sealed state, the angle at which the valve core 2 rotates relative to the valve body 1 allows the threaded groove 21 on the outer circumferential surface of the valve core 2 to fit tightly with the threaded groove on the inner circumferential surface of the valve body 1. When the internal pressure of the air cushion is too high, the relative position of the two mating threaded grooves can be changed by rotating the valve core 2 relative to the valve body 1, so that a gap is created between the mating threaded grooves. A small amount of gas is then released through the pressure relief groove 22 to release excess gas and achieve the pressure relief function. After pressure relief, the valve core 2 is rotated in the opposite direction to re-seal the valve.

[0059] Optionally, the above function can be achieved by controlling the height of the threaded groove 21 on the outer circumferential surface of the valve core 2 and the threaded groove on the outer circumferential surface of the valve body 1. Similarly, some intermittent grooves that can disconnect the threaded grooves can be provided on the outer circumferential surface of the valve body 1. In the sealed state, these intermittent grooves are not connected with the pressure relief groove 22. Rotating the valve core 2 relative to the valve body 1 can make the two connected to each other to achieve the pressure relief function.

[0060] The air valve provided in this embodiment can prevent the air cushion from being blown away due to excessive internal gas pressure, effectively improving the stability of the air valve during inflation and deflation (especially deflation) under high internal pressure, so that the air cushion can be used normally.

[0061] Therefore, more specific structural details of the air valve provided in this embodiment can be found by referring to [the relevant documentation]. Figures 1 to 8 The specific embodiment provided can also be referred to. Figures 9 to 11 The provided specific embodiment two, or the structures in the two specific embodiments can be modified or combined, for example, but not limited to:

[0062] In an optional implementation of this embodiment, refer to Figure 2 , Figure 5 and Figure 11 With the end of the aforementioned pressure relief groove 22 facing the first end 201 of the valve core as its first end and the end facing the second end 202 of the valve core as its second end, along the axial direction of the valve core 2: the threaded groove 21 provided on the outer circumferential surface of the valve core 2 can be as follows: Figure 11 As shown, extending towards the first end 201 of the valve core to the edge of the first end 201 of the valve core (i.e., the boundary line of the threaded groove 21 towards the first end 201 of the valve core on the valve core 2 is the edge of the first end 201 of the valve core); and / or, as Figure 2 , Figure 5 and Figure 11 As shown, along the axial direction of the valve core 2: the threaded groove 21 on the outer circumferential surface of the valve core 2 extends towards the second end 202 of the valve core to the second end edge of the pressure relief groove 22, or extends towards the second end 202 of the valve core to the portion on the valve core 2 located between the second end edge of the pressure relief groove 22 and the second end 202 of the valve core (i.e., the pressure relief groove 22 is disposed inside the area where the threaded groove 21 extends along the axial direction of the valve core 2). In this optional embodiment, "and / or" indicates that the structural feature before "and / or" and the structural feature after "and / or" are designed simultaneously or selectively. The above design of this optional embodiment ensures that when gas is discharged through the pressure relief groove 22, the structural support provided by the threaded groove 21 can be effectively utilized, thereby maintaining the stability of the entire gas valve during pressure relief. In addition, when the threaded groove 21 extends towards the first end 201 of the valve core to the edge of the first end 201 of the valve core (that is, the boundary line of the threaded groove 21 towards the first end 201 of the valve core on the valve core 2 is the edge of the first end 201 of the valve core), rotating the valve core 2 relative to the valve body 1 along the threaded groove 21 allows the gas to be slowly released until the threaded groove 21 is screwed to the edge of the first end 201 of the valve core, thus achieving the function of completely releasing the gas, making it more convenient to use.

[0063] In this embodiment, there are multiple optional structures for the sealing component. In some optional embodiments, the sealing component includes a perforated plate 31 and an elastic membrane 32. The perforated plate 31 is fixed radially along the valve core 2 or integrally connected to the inner wall of the valve core channel. The through holes on the perforated plate 31 connect the two sides of the perforated plate 31 to connect the valve core channel. The elastic membrane 32 is limited and installed on the side of the perforated plate 31 facing the first end 201 of the valve core by a limiting member. Taking the gas pressure on the side of the perforated plate 31 facing the first end 201 of the valve core as Pa1 and the gas pressure on the side of the perforated plate 31 facing the second end 202 of the valve core as Pa2, then, under the working state: when Pa2>Pa1 (when inflating), the elastic membrane 32 undergoes elastic deformation and a gap is generated between it and the through hole of the perforated plate 31 to open the valve core channel; when Pa1≥Pa2 (after being fully inflated), the elastic membrane 32 automatically covers the through hole of the perforated plate 31 under the elastic restoring force to close the valve core channel. When releasing air, the valve core 2 can be rotated relative to the valve body 1 to release air.

[0064] The specific installation method of the elastic diaphragm 32, which is limited and installed on the side of the perforated plate 31 facing the first end 201 of the valve core by a limiting member, includes, but is not limited to, having the limiting member include a limiting rod 33, which passes through a through hole in the middle of the perforated plate 31, and the middle part of the elastic diaphragm 32 is fixedly connected to the end of the limiting rod 33 facing the first end 201 of the valve core. A limiting protrusion 331 is provided on the outer peripheral surface of the limiting rod 33, and the limiting protrusion 331 is limited on the side of the perforated plate 31 facing the second end 202 of the valve core, for limiting the elastic diaphragm 32. 2. Positioning: Optionally, a limiting rod sleeve 311 communicating with the central through hole is provided on the side surface of the perforated plate 31 facing the first end 201 of the valve core. This allows the limiting rod 33 to pass through the limiting rod sleeve 311, preventing the limiting rod 33 from deflecting during operation and affecting the sealing performance of the elastic membrane 32. Furthermore, a positioning groove that mates with the end of the limiting rod is provided on the side surface of the body 41 of the cover 4 facing the valve core 2, further improving the limiting stability of the limiting rod 33 and enhancing the sealing performance of the elastic membrane 32. In addition, the perforated plate 31 can be a flat plate or an arc-shaped plate in the radial cross-section along the valve core channel. An arc-shaped plate convex towards the second end 202 of the valve core is the optimal plate shape structure, so that the elastic membrane 32 better adheres to the surface of the perforated plate 31 facing the first end 201 of the valve core under sealed conditions, thereby further ensuring the sealing performance of the elastic membrane 32.

[0065] In addition, in some optional embodiments of this example, when the air valve is applied to air cushions with internal fillings, such as wire-drawing air cushions, during the use of the air cushion, there may be a situation where the wire or other fillings overflow from the air cushion, affecting the durability and service life of the air cushion. Therefore, the air valve further includes an isolation cover 11, which is connected to the second valve port 102 of the valve body 1, and has several perforations on its surface. During use, the isolation cover 11 is embedded inside the air cushion, preventing the wire from entering the isolation cover 11 and then escaping from the valve body channel and valve core channel. This achieves the function of preventing the fillings from overflowing from the air cushion and preventing the fillings from disturbing or damaging the internal structure of the air valve. The several perforations ensure effective airflow, thereby ensuring that the air valve can properly inflate and deflate the air cushion. Regarding the specific structure of the isolation cover 11, the perforations can be as follows: Figures 1 to 4 The through-hole structure shown is provided on the isolation cover 11, or the isolation cover 11 is as follows: Figure 9 and Figure 10 As shown, it is grid-like, with open sections being its spaces. The isolation cover 11 can be made by cutting or punching holes after shaping plastic or polymer material, or it can be made by cutting metal cylinders, or by weaving metal material, or by welding metal mesh after winding, or by other methods. This embodiment does not impose specific limitations on its manufacturing materials and methods. The isolation cover 11 is connected to the second valve port 102 of the valve body 1 by threaded connection or snap-fit, or the isolation cover 11 is integrally formed and connected to the second valve port 102 of the valve body 1. To improve the structural stability of the air valve, it is preferable that the isolation cover 11 is integrally formed and connected to the second valve port 102 of the valve body 1, that is, the isolation cover 11 and the valve body 1 are a single structural component to prevent the isolation cover 11 from loosening into the wire mesh air cushion during use.

[0066] In an optional embodiment of this invention, a rotating boss 23 protruding radially outward from the outer circumferential surface of the valve core 2 is provided. Furthermore, a plurality of anti-slip protrusions 231 are provided on the outer circumferential surface of the rotating boss 23 to provide enhanced friction when rotating the valve core 2, ensuring better control and operating experience for the user. Optionally, the valve also includes a valve seat 12 disposed on the outer circumferential surface of the valve body 1, with a sealing ring 121 provided on the side of the valve seat 12 that contacts the rotating boss 23. The radial cross-section of the rotating boss 23 can be square or polygonal to facilitate the rotation of the valve core 2. In order to further improve the operator's tactile experience, the rotating boss 23 can be coated with rubber, and the aforementioned anti-slip protrusions 231 can be provided on the outer peripheral surface of the coated structure. In the sealed state, the sealing ring 121 is in contact with the coated surface. The coated material can be nested on the outside of the rotating boss 23 by means of a concave-convex fit to improve the structural reliability. Similarly, the valve seat 12 can also be fitted and installed on the outside of the first end 101 of the valve body by means of a concave-convex fit. The valve seat 12 can be, but is not limited to, made of hard rubber or hard plastic.

[0067] In an optional embodiment of this example, in order to address the problem that the components of the air valve may become loose or dispersed due to vibration or pressure changes in a high-pressure environment, affecting the function and safety of the air cushion, the air valve is further provided with a valve seat 12 disposed on the outer peripheral surface of the valve body 1. At the same time, it also includes an anti-loosening connector 5 connecting the cover 4 and the valve seat 12. The anti-loosening connector 5 ensures that the components of the air valve will not disperse or become loose during use.

[0068] Further optional, refer to Figure 2 The outer circumferential surface of the valve seat 12 is provided with a first positioning groove 501 extending circumferentially along the valve seat 12, and the outer circumferential surface of the second end 202 of the valve core is provided with a second positioning groove 502 extending circumferentially along the valve core 2; the above-mentioned anti-loosening connector 5 includes at least a first elastic ring 53, a second elastic ring 54, and a first elastic connecting band 51 connecting the first elastic ring 53 and the elastic ring, the first elastic ring 53 is nested inside the first positioning groove 501, and the second elastic ring 54 is nested inside the second positioning groove 502.

[0069] Further optionally, the cover 4 includes a body 41 that covers the port of the second end 202 of the valve core and a top protrusion 42 provided on the side surface of the body 41 opposite to the valve core 2, and the top protrusion 42 and the body 41 form a third positioning groove 503; the above-mentioned anti-loosening connector 5 also includes a third elastic ring 55 and a second elastic connecting band 52 connecting the third elastic ring 55 and the second elastic ring 54, and the third elastic ring 55 is nested inside the third positioning groove 503.

[0070] The above structure can effectively avoid the risk of valve components falling off or becoming loose, thus improving the overall stability of the product.

[0071] In an optional embodiment of this invention, the cover 4 is snapped onto the port of the second end 202 of the valve core by a press-fit mechanism. Optionally, a side handle 43 is also provided on one side of the body 41 of the cover 4 to facilitate lifting the cover 4 during inflation. The cover 4 is a press-fit design, which provides a better user experience and is more convenient to operate compared to a traditional knob cover. The cover 4 may be made of, but is not limited to, hard plastic, which improves the tactile feel and ensures strong airtightness, preventing gas leakage from the cover 4 under sealed conditions.

[0072] Second aspect

[0073] This embodiment also provides an air cushion, including the air valve provided in any of the aforementioned optional embodiments, and the effect it can achieve is the same as that of the aforementioned air valve.

[0074] Finally, it should be noted that:

[0075] 1. In this specification, "and / or" means that the structure before "and / or" and the structure after "and / or" are set simultaneously or selectively;

[0076] 2. The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to mutually. The above embodiments in this specification are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model 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 or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A gas valve, characterized in that: include: The valve body (1) has a valve body channel inside, and the valve body (1) is also provided with a first valve port (101) and a second valve port (102) communicating with the valve body channel; The valve core (2) has a valve core channel that axially connects the first end (201) and the second end (202) of the valve core inside. A sealing component for opening or closing the valve core channel is installed inside the valve core channel. The first end (201) of the valve core is inserted into the first valve port (101) and its outer circumferential surface is threaded to the inner circumferential surface of the first valve port (101). The second end (202) of the valve core is located on the side of the valve body (1) close to the first valve port (101). Cover (4) seals the port of the second end (202) of the valve core; And a pressure relief structure, including at least one pressure relief groove (22) provided on the outer peripheral surface of the first end (201) of the valve core, the pressure relief groove (22) extending along the axial direction of the valve core (2) and interrupting the threaded groove (21) provided on the outer peripheral surface of the first end (201) of the valve core.

2. The air valve according to claim 1, characterized in that: With the end of the pressure relief groove (22) facing the first end (201) of the valve core as its first end and the end facing the second end (202) of the valve core as its second end, along the axial direction of the valve core (2): The threaded groove (21) extends toward the first end (201) of the valve core to the edge of the first end (201) of the valve core; And / or, the threaded groove (21) extends toward the second end (202) of the valve core to the second end edge of the pressure relief groove (22), or extends toward the second end (202) of the valve core to the portion of the valve core (2) located between the second end edge of the pressure relief groove (22) and the second end (202) of the valve core.

3. The air valve according to claim 1, characterized in that: The valve also includes an isolation cover (11), which is connected to the second valve port (102) of the valve body (1) by docking or integral molding, and has several hollowed-out parts on the surface of the isolation cover (11).

4. The air valve according to claim 1, characterized in that: The outer circumferential surface of the valve core (2) is provided with a rotating boss (23) that protrudes radially outward along the valve core (2); wherein: A plurality of anti-slip protrusions (231) are provided on the outer peripheral surface of the rotating boss (23); And / or, the valve further includes a valve seat (12) disposed on the outer peripheral surface of the valve body (1), and a sealing ring (121) is provided on the side of the valve seat (12) that is in contact with the rotating boss (23).

5. The air valve according to claim 1, characterized in that: The air valve also includes a valve seat (12) disposed on the outer peripheral surface of the valve body (1), and the air valve also includes an anti-loosening connector (5), which connects the cover (4) and the valve seat (12).

6. The air valve according to claim 5, characterized in that: The outer peripheral surface of the valve seat (12) is provided with a first positioning groove (501) extending circumferentially along the valve seat (12), and the outer peripheral surface of the second end (202) of the valve core is provided with a second positioning groove (502) extending circumferentially along the valve core (2); The anti-loosening connector (5) includes at least a first elastic ring (53), a second elastic ring (54), and a first elastic connecting strip (51) connecting the first elastic ring (53) and the elastic ring. The first elastic ring (53) is nested inside the first positioning groove (501), and the second elastic ring (54) is nested inside the second positioning groove (502).

7. The air valve according to claim 6, characterized in that: The cover (4) includes a body (41) that covers the port of the second end (202) of the valve core and a top protrusion (42) provided on the side surface of the body (41) away from the valve core (2), and a third positioning groove (503) is formed between the top protrusion (42) and the body (41). The anti-loosening connector (5) further includes a third elastic ring (55) and a second elastic connecting strip (52) connecting the third elastic ring (55) and the second elastic ring (54), wherein the third elastic ring (55) is nested inside the third positioning groove (503).

8. The air valve according to claim 1, characterized in that: The cover (4) is snapped onto the port of the second end (202) of the valve core by pressing.

9. The air valve according to claim 1, characterized in that: The sealing component includes a perforated plate (31) and an elastic membrane (32); The perforated plate (31) is fixed radially along the valve core (2) or integrally connected to the inner wall of the valve core channel. The through holes on the perforated plate (31) connect the two sides of the perforated plate (31) to connect the valve core channel. The elastic membrane (32) is fixedly installed on the side of the perforated plate (31) facing the first end (201) of the valve core by a limiting member; with the gas pressure on the side of the perforated plate (31) facing the first end (201) of the valve core as Pa1 and the gas pressure on the side of the perforated plate (31) facing the second end (202) of the valve core as Pa2, then, in the working state: when Pa2>Pa1, the elastic membrane (32) undergoes elastic deformation and a gap is generated between it and the through hole of the perforated plate (31) to open the valve core channel; when Pa1≥Pa2, the elastic membrane (32) automatically covers the through hole of the perforated plate (31) under the elastic restoring force to close the valve core channel.

10. An air cushion, characterized in that: Includes the air valve as described in any one of claims 1-9.

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