Quick-connect fittings, gas containment components and gas supply equipment

Abstract

This utility model provides a quick-connect fitting, a gas containing assembly, and a gas supply device, belonging to the field of gas supply technology. The quick-connect fitting is used to connect a gas supply device and a gas containing device, and includes: a connecting part, the connecting part including a first snap-fit ​​structure and / or a second snap-fit ​​structure, the connecting part being used to snap-fit ​​with the gas supply device through the first snap-fit ​​structure, and / or the connecting part being used to snap-fit ​​with the gas containing device through the second snap-fit ​​structure; a limiting part, the connecting part being fixedly disposed on the limiting part, the limiting part being used to install on the gas supply device and / or the gas containing device to limit the connection part. This solution has a simple overall structure, is easy to install, is not easily loosened, and can ensure a reliable seal after installation, preventing gas leakage.

Description

Technical Field

[0001] This utility model relates to the field of gas supply technology, specifically to a quick-connect fitting, a gas containing component, and a gas supply device. Background Technology

[0002] With the increasing frequency of tourism, exploration, and infrastructure construction activities on high-altitude plateaus, altitude sickness caused by exposure to low oxygen and low pressure environments has become a prominent health and safety issue. To alleviate and prevent altitude sickness, portable oxygen supply devices (such as portable oxygen cylinders and oxygen respirators) carried by individuals have become widely used. These devices connect to oxygen masks or nasal cannulas via valves, providing users with emergency or continuous oxygen replenishment using gas cylinders, and are key equipment for ensuring safety during activities at high altitudes.

[0003] For example, the gas supply devices disclosed in Chinese patents with publication numbers CN223248604U, CN223042025U, and CN223248651U generally use a traditional threaded connection method to connect the valve body to the gas cylinder. Although this method can provide a reliable seal, the operation process is cumbersome, requiring a certain number of turns and time to tighten. In harsh environments at high altitudes (such as low temperatures, wearing gloves, or when the user may experience physical discomfort or slow movement), it is difficult to achieve rapid installation, which may delay oxygen supply in emergencies. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a quick-connect fitting, a gas containment component, and a gas supply device to solve the problem that the above-mentioned threaded connection method, although providing a reliable seal, is cumbersome to operate, difficult to achieve quick installation, and may delay oxygen supply in emergency situations.

[0005] To achieve the above objectives, this utility model provides a quick-connect fitting for connecting a gas supply device and a gas containing device, the quick-connect fitting comprising: The connecting part includes a first snap-fit ​​structure and / or a second snap-fit ​​structure, the connecting part being used to snap-fit ​​with the gas supply device through the first snap-fit ​​structure, and / or the connecting part being used to snap-fit ​​with the gas container device through the second snap-fit ​​structure; A limiting part is provided, and the connecting part is fixedly disposed on the limiting part. The limiting part is used to be installed on the gas supply device and / or the gas containing device to limit the connecting part.

[0006] Optionally, the first snap-fit ​​structure includes a first groove disposed on the first connecting structure, the first groove being used for engaging with the snap-fit ​​block on the gas supply device; Wherein, the first connecting structure is disposed around the limiting part and has a first protrusion structure on the outside, and the first protrusion structure and the first connecting structure form the first groove; Preferably, the first protrusion structure is a first protruding ring.

[0007] Optionally, the limiting portion includes a tubular structure for insertion into the gas supply device, the tubular structure being connected to the first protrusion structure via a first connecting structure.

[0008] Optionally, a deformation gap exists between the first protruding structure and the tubular structure.

[0009] Optionally, the second snap-fit ​​structure includes a second groove disposed between the limiting portion and the second connecting structure, the second groove engaging with a retaining ring on the gas containing device; The second connecting structure is disposed around the periphery of the limiting part and a second protrusion structure is formed on the inner side of the end. The second protrusion structure, the second connecting structure and the limiting part form the second groove. Preferably, the second protrusion structure is annular.

[0010] Optionally, the limiting portion includes a tubular structure for insertion into the gas containing device, the tubular structure being connected to the second protrusion structure via a second connecting structure.

[0011] Secondly, the present invention also provides a gas containing assembly, including the aforementioned quick-connect fitting and gas containing device. The gas containing device includes a housing forming a sealed chamber, a first vent on the housing, and a fixing ring around the first vent that engages with a second snap-fit ​​structure of the quick-connect fitting.

[0012] Optionally, the fixing ring includes a vertically arranged fixing ring and an arc-shaped ring disposed at the top of the fixing ring; the arc-shaped ring is engaged with the second locking structure, and the arc shape of the arc-shaped ring forms a deformation space.

[0013] On the other hand, the present invention also provides a gas supply device, including the quick-connect fitting or the gas containing assembly described above, and a gas supply device; the gas supply device has a gas supply body and an outer peripheral wall disposed outside the gas supply body, and a snap-fit ​​block is provided on the outer peripheral wall to cooperate with the first snap-fit ​​structure of the quick-connect fitting.

[0014] Optionally, the outer peripheral wall is provided with a second vent that communicates with the gas supply body and a limiting structure surrounding the second vent, and the limiting part of the quick-connect fitting cooperates with the limiting structure; when the gas supply device is installed on the gas containing assembly, the second vent is connected to the first vent of the gas containing device.

[0015] Optionally, a pressing structure is provided on two opposing side walls of the outer peripheral wall. The pressing structure includes a fixed support part and a pressing part and a snap-fit ​​part respectively provided on both sides of the support part. A snap-fit ​​block is provided on the snap-fit ​​part.

[0016] Optionally, the gas supply device is rotatably connected to the quick-connect fitting; and / or, the quick-connect fitting is rotatably connected to the gas receiving device.

[0017] The quick-connector in this technical solution includes a connecting part and a limiting part. It can be connected to the gas supply device through the first snap-fit ​​structure of the connecting part, and to the gas holding device through the second snap-fit ​​structure of the connecting part. This enables the quick installation of the gas supply device and the gas holding device. At the same time, the limiting part limits the connecting part. The overall structure is simple, can ensure reliable sealing after installation, is not easy to loosen, and effectively avoids gas leakage.

[0018] Other features and advantages of this utility model embodiment will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural schematic diagram of the quick-connect component provided by this utility model; Figure 2 This is a cross-sectional structural diagram of the quick-connect fitting provided by this utility model; Figure 3 This is a cross-sectional structural diagram of the quick-connect fitting provided by this utility model in the installed state; Figure 4 This is a schematic diagram of the gas containing device provided by this utility model; Figure 5 This is a schematic diagram of the structure of the gas containment component provided by this utility model; Figure 6 This is a schematic diagram of the gas supply device provided by this utility model; Figure 7 This is a cross-sectional structural schematic diagram of the gas supply device provided by this utility model; Figure 8 This is a schematic diagram of the structure of the first gas supply device provided by this utility model; Figure 9 This is a partial structural schematic diagram of the second type of gas supply device provided by this utility model.

[0020] Explanation of reference numerals in the attached figures 1-Gas supply device; 2-Gas container; 3-Quick connector; 11-Snap-fit ​​block; 12-Gas supply main body; 13-Outer peripheral wall; 14-Second vent; 15-Limiting structure; 16-Pressing structure; 21-Fixing retaining ring; 22-Outer shell; 23-First vent; 31-Connecting part; 32-Limiting part; 161-Supporting part; 162-Pressing part; 163-Snap-fit ​​part; 211-Retaining ring; 212-Arc-shaped ring; 311-First snap-fit ​​structure; 312-Second snap-fit ​​structure; 3111-First connecting structure; 3112 - First protruding structure; 3121 - Second connecting structure; 3122 - Second protruding structure. Detailed Implementation

[0021] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0022] In this embodiment of the utility model, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use.

[0023] The terms “first,” “second,” “third,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] The terms "parallel" and "perpendicular" do not mean that the components must be absolutely parallel or perpendicular, but rather that they can be slightly tilted. For example, "parallel" simply means that its direction is more parallel than "perpendicular," not that the structure must be completely parallel, but that it can be slightly tilted.

[0025] The terms "horizontal," "vertical," and "sag" do not imply that a component must be absolutely horizontal, vertical, or sagging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0026] Furthermore, terms like "roughly" and "basically" are used to indicate that the content does not require absolute precision, but rather allows for a certain degree of deviation. For example, "roughly equal" does not simply mean absolute equality; in actual production and operation, achieving absolute "equality" is difficult, and a certain degree of deviation is generally present. Therefore, besides absolute equality, "roughly equal to" also includes the aforementioned situation where a certain degree of deviation exists. Using this as an example, in other cases, unless otherwise specified, terms like "roughly" and "basically" have similar meanings.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0028] Figure 1 This is a structural schematic diagram of the quick-connect component provided by this utility model; Figure 2 This is a cross-sectional structural diagram of the quick-connect fitting provided by this utility model; Figure 3 This is a cross-sectional structural diagram of the quick-connect fitting provided by this utility model in the installed state; Figure 4 This is a schematic diagram of the gas containing device provided by this utility model; Figure 5 This is a schematic diagram of the structure of the gas containment component provided by this utility model; Figure 6 This is a schematic diagram of the gas supply device provided by this utility model; Figure 7 This is a cross-sectional structural schematic diagram of the gas supply device provided by this utility model; Figure 8 This is a schematic diagram of the structure of the first gas supply device provided by this utility model; Figure 9 This is a partial structural schematic diagram of the second type of gas supply device provided by this utility model.

[0029] In existing technologies, a traditional threaded connection is commonly used to connect the gas supply device 1 and the gas receiving device 2. While this method provides a reliable seal, the operation is cumbersome, requiring a certain number of turns to tighten, and takes a considerable amount of time. In harsh environments such as high altitudes (e.g., low temperatures, wearing gloves, user discomfort, or slowed movement), rapid installation is difficult, and gas supply may be delayed in emergencies. Therefore, in this embodiment, as... Figure 1-3As shown, a quick-connect fitting is provided for connecting a gas supply device 1 and a gas container 2. The quick-connect fitting 3 includes a connecting part 31, which includes a first snap-fit ​​structure 311 and / or a second snap-fit ​​structure 312. The connecting part 31 is snapped to the gas supply device 1 through the first snap-fit ​​structure 311, and / or the connecting part 31 is used to snap to the gas container 2 through the second snap-fit ​​structure 312, thereby realizing the connection between the gas supply device 1 and the gas container 2.

[0030] Specifically, the connecting part 31 can be arranged vertically, with the first snap-fit ​​structure 311 located on the top outer side of the connecting part 31 and the second snap-fit ​​structure 312 located on the bottom inner side of the connecting part 31, thus serving as the first end and the second end of the connecting part 31. This arrangement with opposite sides ensures the stability of the connection and allows the upper and lower ends of the connecting part 31 to undergo a certain amount of deformation under compression during installation, thereby ensuring a smoother process for the first snap-fit ​​structure 311 to snap into the gas supply device 1 and a smoother process for the second snap-fit ​​structure 312 to snap into the gas container 2.

[0031] When the connecting part 31 has a first snap-fit ​​structure 311 and a second snap-fit ​​structure 312, both ends of the connecting part 31 (the first end and the second end) are snap-fit ​​connected, that is, both ends of the connecting part 31 are snap-fitted and fixed to the gas supply device 1 and the gas containing device 2, respectively. Alternatively, when the connecting part 31 only has a first snap-fit ​​structure 311 or a second snap-fit ​​structure 312, that is, one end of the connecting part 31 is snap-fitted, and the other end can be directly fixedly connected. For example, when one end of the connecting part 31 is snap-fitted to the gas supply device 1 through the first snap-fit ​​structure 311, the other end of the connecting part 31 can be directly fixedly connected to the gas containing device 2. The fixing method is not limited to threaded fixing, ultrasonic welding, etc.

[0032] In addition, to further improve the stability of the connection, a limiting part 32 is provided on the inner side of the connecting part 31. When in the installed state, the limiting part 32 contacts the gas supply device 1 and / or the gas containing device 2, thereby supporting and limiting the connecting part 31. The quick-connect fitting 3 constructed by the above scheme has a simple overall structure, is easy to install, is not easy to loosen, and can ensure a reliable seal after installation, thus avoiding the beneficial effect of gas leakage.

[0033] In one implementation, such as Figure 1-3As shown, the bottom end of the gas supply device 1 is provided with at least one snap-fit ​​block 11; the first snap-fit ​​structure 311 includes a first groove provided on the first connecting structure 3111, the first groove is used to cooperate with the snap-fit ​​block 11 on the gas supply device 1, so that the snap-fit ​​block 11 can be snapped into the first groove, thereby realizing the quick and stable snap-fit ​​fixation of the connecting part 31 and the gas supply device 1.

[0034] like Figure 1-3 As shown, the first snap-fit ​​structure 311 includes: a first connecting structure 3111 disposed around the periphery of the limiting part 32 and a first protruding structure 3112 disposed outside the first connecting structure 3111. The first protruding structure 3112 and the first connecting structure 3111 form a first groove for engaging with the snap-fit ​​block 11 on the gas supply device 1. The gas supply device 1 and the connecting part 31 are engaged with each other by the snap-fit ​​block 11 and the first groove, which enables quick installation and disassembly, ensures the connection stability of the connection part, and effectively prevents slippage.

[0035] In one embodiment, the first protrusion structure 3112 is a first protruding ring. Specifically, it can be a circular protruding ring, a square protruding ring, or other structures, to match the structure of the gas supply device 1.

[0036] In another implementation, such as Figure 1-3 As shown, since the first groove and each snap-fit ​​block 11 are connected by snap-fit, during the snap-fit ​​process, the snap-fit ​​block 11 will first contact the outer wall surface of the first convex ring, and then gradually slide downward, so that the snap-fit ​​block 11 slides into the first groove to achieve snap-fit. Therefore, the cross-sectional area of ​​the first convex ring is gradually increased from top to bottom to ensure that the snap-fit ​​process is smoother.

[0037] In one implementation, such as Figure 1-3 As shown, the limiting part 32 includes a tubular structure for insertion into the gas supply device 1. The tubular structure is connected to the first protruding structure 3112 via a first connecting structure 3111. The tubular structure can be circular or square, and has a certain width and thickness to increase structural strength and ensure structural integrity.

[0038] In another implementation, such as Figure 1-3 As shown, there is a deformation gap between the first protruding structure 3112 and the tubular structure. The first protruding structure 3112 and the tubular structure are not in contact, forming a deformation gap, which facilitates installation and disassembly.

[0039] In one implementation, such as Figure 1-3As shown, a retaining ring 21 is provided at the top of the gas containing device 2; the second locking structure 312 includes a second groove provided between the limiting part 32 and the second connecting structure 3121. The second groove cooperates with the retaining ring 21 on the gas containing device 2, so that the retaining ring 21 can be locked in the second groove, thereby realizing the quick and stable locking and fixing of the connecting part 31 and the gas containing device 2.

[0040] In one implementation, such as Figure 1-3 As shown, the second snap-fit ​​structure 312 includes a second connecting structure 3121 disposed around the periphery of the limiting part 32 and a second protruding structure 3122 disposed on the inner side of the end of the second connecting structure 3121. The second protruding structure 3122, the second connecting structure 3121, and the limiting part 32 form a second groove for engaging with the fixing ring 21 on the gas containing device 2. The gas containing device 2 and the connecting part 31 are engaged with each other by the fixing ring 21 and the second groove, which enables quick installation and disassembly, ensures the connection stability of the connection part, and effectively prevents slippage. In addition, the fixing ring 21 is located in the second groove. This positional distribution and installation method can achieve auxiliary limiting and protection of the fixing ring 21, while ensuring a simpler overall structural appearance.

[0041] In one embodiment, the second protrusion structure 3122 is annular. Specifically, it can adopt a circular protrusion ring, a square protrusion ring, or other structures to match the structure of the gas containing device 2.

[0042] In one implementation, such as Figure 1-3 As shown, the limiting part 32 includes a tubular structure for insertion into the gas containing device 2. The tubular structure is connected to the second protruding structure 3122 via a second connecting structure 3121. The tubular structure can be circular or square, and has a certain width and thickness to increase structural strength and ensure structural integrity.

[0043] In another implementation, such as Figure 1-3 As shown, since the second protrusion structure 3122 and the fixing ring 21 are connected by a snap-fit ​​connection, during the snap-fit ​​process, the bottom surface of the second protrusion structure 3122 will first contact the outer wall of the fixing ring 21, and then gradually slide downward, so that the fixing ring 21 slides into the second groove to achieve snap-fit. In order to make the snap-fit ​​process smoother, the cross-sectional area of ​​the second protrusion structure 3122 is gradually increased from top to bottom to ensure that the snap-fit ​​process is smoother.

[0044] In another embodiment, the limiting part 32 is set as a horizontally arranged annular piece with a hollow interior to form a limiting space, so that the gas containing device 2 can pass through the limiting space to support and limit the connecting part 31, thereby ensuring the stability of the connection.

[0045] This embodiment also provides a gas containing component, such as... Figure 1-5 As shown, the device includes the quick-connect fitting 3 and the gas containing device 2. The gas containing device 2 includes a housing 22 forming a sealed chamber. The housing 22 is provided with a first vent 23. A fixing ring 21 is provided around the first vent 23 to engage with the second snap-fit ​​structure 312 of the quick-connect fitting 3.

[0046] Specifically, the sealed chamber of the gas containing device 2 stores gas, which can be a gas cylinder or an oxygen bag with a corresponding interface, and can have different volumes such as 1L or 5L, or different shapes such as round or square. When gas is supplied to the outside through the gas containing device 2, the first vent 23 serves as the outlet; when gas is filled into the gas containing device 2 through an external filling device, the first vent 23 serves as the inlet. The fixed retaining ring 21 is matched with the structure of the second groove, and through mutual locking, quick installation and disassembly can be achieved, ensuring the connection stability of the connection parts and effectively preventing slippage.

[0047] In one implementation, such as Figure 3 As shown, the fixing ring 21 includes a vertically arranged fixing ring 211 and an arc-shaped ring 212 disposed at the top of the fixing ring 211; the arc-shaped ring 212 engages with the second engaging structure 312, and the arc shape of the arc-shaped ring 212 forms a deformation space. Specifically, in this embodiment, the fixing ring 21 is configured to include: a vertically arranged fixing ring 211 and an arc-shaped ring 212 disposed at the top of the fixing ring 211, and the arc-shaped ring 212 engages with the first protruding ring 331. The fixing ring 211 has a certain height, so that during the process of the arc-shaped ring 212 engaging with the second groove, the arc-shaped ring 212 will undergo a certain amount of deformation, making the engagement process smoother. In addition, the fixing ring 21 is manufactured by integral molding, which can increase the structural strength.

[0048] This embodiment also provides a gas supply device, such as... Figure 1-3 , Figure 6-8 As shown, it includes the quick-connect fittings and a gas supply device 1; the gas supply device 1 has a gas supply body 12 and an outer peripheral wall 13 disposed outside the gas supply body 12, and the outer peripheral wall 13 is provided with a snap-fit ​​block 11 that cooperates with the first snap-fit ​​structure 311 of the quick-connect fitting 3.

[0049] This embodiment also provides a gas supply device, such as... Figure 1-3 , Figure 9 As shown, it includes the gas containing assembly described above, and a gas supply device 1; the gas supply device 1 has a gas supply body 12 and an outer peripheral wall 13 disposed outside the gas supply body 12, and a snap-fit ​​block 11 is provided on the outer peripheral wall 13 to cooperate with the first snap-fit ​​structure 311 of the quick-connect member 3.

[0050] Specifically, the gas supply device 1 can be a breather valve or a filling device. The specific structure of the breather valve can adopt the structure described in Chinese patents such as CN223248604U, CN223042025U, and CN223248651U. The specific structure is described in detail in these patents; therefore, the specific structural details and usage method of the gas supply device 1 in this solution will not be repeated here. At least one snap-fit ​​block 11 is provided to achieve snap-fit. To further enhance the stability of the connection, two or more snap-fit ​​blocks 11 can also be provided. Preferably, if there are two snap-fit ​​blocks 11, the two blocks are arranged opposite each other; if there are three snap-fit ​​blocks 11, the three blocks are arranged in a triangular structure (e.g., an equilateral triangle); if there are four snap-fit ​​blocks 11, the four blocks are arranged in a rhomboid or rectangular structure (e.g., a square). Using this uniform or symmetrical distribution method to achieve the snap-fit ​​connection can further improve the stability of the snap-fit.

[0051] In one implementation, such as Figure 6-7 As shown, the outer peripheral wall 13 is provided with a second vent 14 communicating with the gas supply body 12 and a limiting structure 15 surrounding the second vent 14. The limiting part 32 of the quick connector 3 cooperates with the limiting structure 15. When the gas supply device 1 is installed on the gas containing assembly, the second vent 14 is connected to the first vent 23 of the gas containing device 2. Specifically, the limiting structure 15 is a hollow, vertically arranged annular structure, giving it a certain length in the vertical direction. The second vent 14 of the gas supply device 1 is located in the middle of the limiting structure 15. After installation, in addition to contacting the limiting part 32, the bottom end of the limiting structure 15 contacts the top of the gas containing device 2, ensuring that after installation, the lateral movement space between the gas supply device 1 and the quick connector 3 is restricted, achieving better limiting and improving the stability of the overall connection structure. In addition, when installed, the nozzle (first vent 23) of the gas container 2 contacts and squeezes the second vent 14 of the gas supply device 1, thereby opening the gas path and enabling the gas container 2 to supply gas to the gas supply device 1. In order to ensure that the nozzle and the second vent 14 are in close contact and to avoid gas leakage, the second vent 14 of the gas supply device 1 is set in the middle of the limiting structure 15.

[0052] In another embodiment, the limiting part 32 and the limiting structure 15 are set to have the same height to increase the contact area between the limiting part 32 and the limiting structure 15, thereby further increasing the stability of the structure. Furthermore, in order to ensure the overall structural strength, the quick-connect part 3 is manufactured by integral molding; the connecting part 31 and the limiting part 32 can form an H-shaped or other structure to ensure structural strength.

[0053] In one implementation, such as Figure 6-7 As shown, two opposing sidewalls of the outer peripheral wall 13 are provided with pressing structures 16. Each pressing structure 16 includes a fixed support portion 161 and pressing portions 162 and locking portions 163 respectively disposed on both sides of the support portion 161. A locking block 11 is provided on the locking portion 163. Preferably, two pressing structures 16 are provided, and each pressing structure 16 is fixedly connected to the gas supply body 12 through the support portion 161. The support portion 161 is provided with pressing portions 162 and locking portions 163 on its upper and lower sides. When disassembling the gas supply device 1, pressing the pressing portion 162 can cause a small outward displacement of the locking portion 163, allowing the locking block 11 on the locking portion 163 to disengage from the first groove, facilitating disassembly, avoiding damage, and realizing the recycling of the gas supply device 1.

[0054] In another embodiment, an opening is provided at the location where the pressing structure 16 is provided on the outer peripheral wall 13. The pressing structure 16 is disposed within the opening, so that the pressing part 162 and the locking part 163 do not come into contact with the outer peripheral wall 13, but are fixedly connected to the air supply body 12 only through the support part 161. This ensures that when the pressing part 162 is pressed, the pressing part 162 and the locking part 163 can generate corresponding deformation displacement, facilitating disassembly. In addition, at least one reinforcing rib is provided on the support part 161, and the reinforcing rib contacts the inner wall of the pressing part 162 to ensure the connection strength between the support part 161 and the pressing part 162 and improve service life. Furthermore, the thickness of the pressing part 162 will have a gradual change to affect elastic deformation (e.g., the thickness decreases sequentially from top to bottom). Secondly, the pressing part 162 and the locking part 163 are connected by an arc to reduce stress concentration, improve fatigue life, enhance the overall structural strength, avoid the risk of scratching the user, and improve safety and user experience. The top surface of the pressing part is designed as a slope to optimize the mechanical structure and ensure that pressing force is saved during the pressing process.

[0055] In one embodiment, when the first protruding structure 3112 is configured as a first protruding ring, the gas supply device 1 and the quick-connect fitting 3 are rotatably connected via the first snap-fit ​​structure 311; and / or, when the second protruding structure 3122 is configured as an annular ring, the quick-connect fitting 3 and the gas receiving device 2 are rotatably connected via the second snap-fit ​​structure 312. The gas supply direction can be changed by rotation, facilitating use. Under normal circumstances, the gas supply direction can be changed by rotating the overall structure itself, meeting usage requirements. However, in some special situations, such as when wearing thick gloves and only being able to hold the gas receiving device 2 with one hand, it is inconvenient to rotate the gas receiving device 2 to adjust its posture with one hand, and there is a risk of the gas receiving device 2 falling. Therefore, the rotation setting in this solution provides a way to adjust the gas supply direction by contacting the gas supply device 1 with the arm, chest, face, or other parts of the other hand, causing the gas supply device 1 to rotate relative to the gas receiving device 2, thereby increasing the flexibility of use.

[0056] The optional embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present utility model, various simple modifications can be made to the technical solutions of the present utility model, and these simple modifications all fall within the protection scope of the present utility model.

[0057] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the various possible combinations will not be described separately in this embodiment.

[0058] Furthermore, various different implementation methods of this utility model can be arbitrarily combined, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A quick-connect fitting for connecting a gas supply device (1) and a gas container (2), characterized in that, The quick connector (3) includes: The connecting part (31) includes a first snap-fit ​​structure (311) and / or a second snap-fit ​​structure (312). The connecting part (31) is used to snap-fit ​​with the gas supply device (1) through the first snap-fit ​​structure (311), and / or the connecting part (31) is used to snap-fit ​​with the gas container device (2) through the second snap-fit ​​structure (312). The limiting part (32) is fixedly disposed on the connecting part (31). The limiting part (32) is used to be installed on the gas supply device (1) and / or the gas container device (2) to limit the connecting part (31).

2. The quick-connect fitting according to claim 1, characterized in that, The first snap-fit ​​structure (311) includes a first groove provided on the first connection structure (3111), the first groove being used to engage with the snap-fit ​​block (11) on the gas supply device (1); The first connecting structure (3111) is disposed around the limiting part (32) and has a first protrusion structure (3112) on the outside. The first protrusion structure (3112) and the first connecting structure (3111) form the first groove.

3. The quick-connect fitting according to claim 2, characterized in that, The first protruding structure (3112) is a first protruding ring.

4. The quick-connect fitting according to claim 2, characterized in that, The limiting part (32) includes a tubular structure for insertion into the gas supply device (1), and the tubular structure is connected to the first protrusion structure (3112) via a first connecting structure (3111).

5. The quick-connect fitting according to claim 4, characterized in that, There is a deformation gap between the first protruding structure (3112) and the tubular structure.

6. The quick-connect fitting according to claim 1, characterized in that, The second snap-fit ​​structure (312) includes a second groove disposed between the limiting part (32) and the second connecting structure (3121), and the second groove cooperates with the fixing ring (21) on the gas containing device (2); The second connecting structure (3121) is disposed around the limiting part (32) and a second protrusion structure (3122) is formed on the inner side of the end. The second protrusion structure (3122), the second connecting structure (3121) and the limiting part (32) form the second groove.

7. The quick-connect fitting according to claim 6, characterized in that, The second protrusion structure (3122) is ring-shaped.

8. The quick-connect fitting according to claim 6, characterized in that, The limiting part (32) includes a tubular structure for insertion into the gas containing device (2), and the tubular structure is connected to the second protrusion structure (3122) via a second connecting structure (3121).

9. A gas containment assembly, characterized in that, The device includes the quick-connect fitting (3) and the gas containing device (2) as described in any one of claims 1 to 8. The gas containing device (2) includes a housing (22) forming a sealed chamber. A first vent (23) is provided on the housing (22). A retaining ring (21) is provided around the first vent (23) to engage with a second snap-fit ​​structure (312) of the quick-connect fitting (3).

10. The gas containment assembly according to claim 9, characterized in that, The fixing ring (21) includes a vertically arranged fixing ring (211) and an arc-shaped ring (212) disposed at the top of the fixing ring (211); the arc-shaped ring (212) is engaged with the second snap-fit ​​structure (312), and the arc shape of the arc-shaped ring (212) forms a deformation space.

11. A gas supply device, characterized in that, The invention includes a quick-connect fitting as described in any one of claims 1 to 8 or a gas-containing assembly as described in any one of claims 9 to 10, and a gas supply device (1); the gas supply device (1) has a gas supply body (12) and an outer peripheral wall (13) disposed outside the gas supply body (12), wherein the outer peripheral wall (13) is provided with a snap-fit ​​block (11) that cooperates with the first snap-fit ​​structure (311) of the quick-connect fitting (3).

12. The gas supply device according to claim 11, characterized in that, The outer peripheral wall (13) is provided with a second vent (14) communicating with the gas supply body (12) and a limiting structure (15) surrounding the second vent (14). The limiting part (32) of the quick connector (3) cooperates with the limiting structure (15). When the gas supply device (1) is installed on the gas containing assembly, the second vent (14) is connected to the first vent (23) of the gas containing device (2).

13. The gas supply device according to claim 12, characterized in that, The outer peripheral wall (13) has two opposing side walls with a pressing structure (16). The pressing structure (16) includes a fixed support part (161) and a pressing part (162) and a snap-fit ​​part (163) respectively provided on both sides of the support part. The snap-fit ​​part is provided with a snap-fit ​​block (11).

14. The gas supply device according to claim 11, characterized in that, The gas supply device (1) is rotatably connected to the quick-connect fitting (3); and / or the quick-connect fitting (3) is rotatably connected to the gas container (2).

Images