A connecting structure and an oxygen filling system

Abstract

The embodiment of the application provides a connecting structure and an oxygen filling system, which comprise a first connecting head and a second connecting head; the first connecting head comprises a first connecting body and a first electric connecting piece, and the first connecting body is provided with a first channel; the second connecting head comprises a second connecting body and a second electric connecting piece, and the second connecting body is provided with a second channel; the first connecting head and the second connecting head have a first connecting position and a second connecting position which are sequentially matched; in the first connecting position, the first connecting body is in sealed connection with the second connecting body, and the first channel is in communication with the second channel; in the second connecting position, the first connecting body and the second connecting body remain in sealed connection, and the first electric connecting piece is in electric connection with the second electric connecting piece. The connecting structure of the embodiment of the application can not only complete the connection or disconnection of the gas circuit and the electric circuit in one operation, but also can avoid the safety hidden danger caused by the operation sequence disorder.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, specifically relating to a connection structure and an oxygen filling system. Background Technology

[0002] With the improvement of living standards and the advancement of medical technology, people are paying more and more attention to respiratory health. Portable oxygen-filled devices can provide clean oxygen anytime and anywhere, which is beneficial to people's respiratory health and is a better oxygen therapy device.

[0003] In related technologies, in order to enable oxygenation and charging of oxygen-fillable oxygen inhalation devices, these devices are usually equipped with separate inflation and charging connectors, which often need to be connected or disconnected separately, making the operation process cumbersome and posing safety hazards. Summary of the Invention

[0004] This application aims to provide a connection structure and an oxygen filling system to solve the problems of cumbersome operation and potential installation hazards in the oxygen filling and charging process of existing oxygen-fillable oxygen inhalation equipment.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, this application discloses a connection structure, including: a first connector and a second connector;

[0007] The first connector includes a first connector body and a first electrical connector disposed on the first connector body, wherein the first connector body is provided with a first channel;

[0008] The second connector includes a second connector body and a second electrical connector disposed on the second connector body, wherein the second connector body is provided with a second channel;

[0009] The first connector and the second connector have a first connection position and a second connection position that are sequentially engaged. In the first connection position, the first connection body and the second connection body are sealed together, and the first channel is connected to the second channel. In the second connection position, the first connection body and the second connection body are sealed together, and the first electrical connector is electrically connected to the second electrical connector.

[0010] Optionally, the connection structure further includes: a first locking member and a second locking member, wherein the first locking member is disposed on the first connection body and the second locking member is disposed on the second connection body;

[0011] In the first connection position, the first locking member and the second locking member are in an unlocked state; in the second connection position, the first locking member and the second locking member are in a locked state.

[0012] Optionally, the first connector further includes: a first sealing ring, the first sealing ring being fixedly connected to the inner wall of the first channel;

[0013] At the first connection position and the second connection position, at least a portion of the second connection body passes through the first sealing ring and is sealed to the first sealing ring.

[0014] Optionally, the second connector further includes a second sealing ring, which is sleeved on the second connector body, and the second sealing ring abuts against the first sealing ring at the first connection position and the second connection position.

[0015] Optionally, one of the first locking member and the second locking member is a claw, and the other of the first locking member and the second locking member is a block;

[0016] In the first connection position, the claw disengages from the block; in the second connection position, the claw engages with the block.

[0017] Optionally, multiple claws and multiple locking blocks are provided, with one claw used to engage with one locking block.

[0018] The plurality of said claws are arranged at circumferential intervals along the first connecting body, and the plurality of said locking blocks are arranged at circumferential intervals along the second connecting body; and / or, the plurality of said claws are arranged at circumferential intervals along the second connecting body, and the plurality of said locking blocks are arranged at circumferential intervals along the first connecting body.

[0019] Optionally, the card block has a first mating surface, and the card claw has a second mating surface;

[0020] One of the first electrical connector and the second electrical connector is disposed on the first mating surface, and the other of the first electrical connector and the second electrical connector is disposed on the second mating surface. At the second connection position, the first mating surface abuts against the second mating surface to make the first electrical connector and the second electrical connector electrically contact each other.

[0021] Optionally, the locking block is an arc-shaped locking block, and one or both ends of the arc-shaped locking block are provided with anti-reverse protrusions along its extension direction. At the second connection position, at least a portion of the locking claw abuts against the anti-reverse protrusions to limit the locking claw.

[0022] Optionally, the second connector further includes: a second sealing ring;

[0023] The inner wall of the second channel is provided with an annular boss, and the second sealing ring is fixedly connected to the annular boss;

[0024] At the first connection position and the second connection position, at least a portion of the first connection body extends into the second channel and abuts against the second sealing ring.

[0025] Optionally, one of the first locking member and the second locking member is a slot, and the other of the first locking member and the second locking member is a buckle;

[0026] In the first connection position, the slot is disengaged from the buckle; in the second connection position, the slot engages with the buckle.

[0027] Optionally, the first connector further includes a mounting sleeve, which is fitted onto the first connector body and surrounds the first connector body to form a insertion cavity, and the slot is disposed in the mounting sleeve;

[0028] The second connecting body includes a connecting segment, and the buckle is disposed on the connecting segment;

[0029] In the second connection position, the connecting segment is inserted into the insertion cavity so that the slot and the buckle engage.

[0030] Optionally, the first electrical connector is disposed on the mounting sleeve, and the second electrical connector is disposed on the connecting segment;

[0031] At the second connection position, the connecting segment is inserted into the insertion cavity so that the first electrical connector and the second electrical connector make electrical contact.

[0032] Optionally, the mounting sleeve extends from one end near the second connecting body toward the center of the first connecting body to form a limiting portion. In the second connection position, the limiting portion abuts against at least a portion of the second connecting body to limit the second connecting body.

[0033] Optionally, one of the first electrical connector and the second electrical connector is a metal contact, and the other of the first electrical connector and the second electrical connector is a metal contact piece. At the second connection position, the metal contact and the metal contact piece are in electrical contact.

[0034] Optionally, the first electrical connector is a first circuit board, and the first circuit board is provided with a first connection terminal;

[0035] The second electrical connector is a second circuit board, which is provided with a second connection terminal. At the second connection position, the second connection terminal is in electrical contact with the first connection terminal.

[0036] Optionally, the connection structure further includes a connecting pipe, which is fixedly connected to the end of the first connector opposite to the second connector, and / or, the connecting pipe is fixedly connected to the end of the second connector opposite to the first connector.

[0037] Optionally, the connection structure further includes a protective sleeve, which is fitted onto one end of the connecting tube near the first connector and / or the second connector.

[0038] Optionally, the connecting pipe is provided with conductive lines, which are electrically connected to the first electrical connector and / or the second electrical connector.

[0039] Secondly, this application also discloses an oxygen filling system, including: an oxygen filling device, a device to be filled, and the above-mentioned connection structure, wherein the connection structure is disposed between the oxygen filling device and the device to be filled and is connected to the oxygen filling device and the device to be filled.

[0040] In this embodiment, on the one hand, since the first connector includes a first connecting body and a first electrical connector, and the second connector includes a second connecting body and a second electrical connector, the connection or disconnection of the gas path and the circuit can be completed in one operation between the first connector and the second connector, thereby simplifying the operation process. On the other hand, since the first connector and the second connector have a first connection position and a second connection position that cooperate sequentially, during the process of connecting the first connector and the second connector, the first connection position is reached first, the first connecting body and the second connecting body are sealed together, and the first channel and the second channel are connected, thereby realizing the conduction of the gas path. Then, the second connection position is reached, the first connecting body and the second connecting body remain sealed together, and the first electrical connector and the second electrical connector are electrically connected, thereby realizing the conduction of the circuit while ensuring that the gas does not leak. During the connection process between the first and second connectors, firstly, the second connector is withdrawn, maintaining a sealed connection between the first and second connectors, while the first and second electrical connectors are disconnected. This disconnects the circuit while ensuring no gas leakage. Secondly, the first connector is withdrawn, releasing the sealed connection between the first and second connectors, discontinuing the connection between the first and second channels, thus disconnecting the gas path. In summary, when this connection structure is applied to oxygen charging scenarios, it allows for the "connect oxygen first, then connect electricity; disconnect electricity first, then disconnect oxygen" operation sequence, effectively avoiding safety hazards caused by incorrect sequence.

[0041] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0042] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0043] Figure 1 This is one of the structural schematic diagrams of a connection structure provided in the embodiments of this application;

[0044] Figure 2 This is a second schematic diagram of a connection structure provided in an embodiment of this application;

[0045] Figure 3 This is the third schematic diagram of a connection structure provided in the embodiments of this application;

[0046] Figure 4 This is one of the structural schematic diagrams of the first connector of a connection structure provided in an embodiment of this application;

[0047] Figure 5 This is a second schematic diagram of the structure of the first connector of a connection structure provided in an embodiment of this application;

[0048] Figure 6 This is a schematic diagram of the structure of the second connector of a connection structure provided in an embodiment of this application;

[0049] Figure 7 This is one of the structural schematic diagrams of another connection structure provided in the embodiments of this application;

[0050] Figure 8 This is a second schematic diagram of another connection structure provided in the embodiments of this application;

[0051] Figure 9 This is the third schematic diagram of another connection structure provided in the embodiments of this application;

[0052] Figure 10 This is a schematic diagram of the structure of the first connector of another connection structure provided in the embodiments of this application;

[0053] Figure 11 This is a schematic diagram of the structure of the second connector of another connection structure provided in the embodiments of this application;

[0054] Figure 12 This is a schematic diagram of an oxygen filling system provided in an embodiment of this application.

[0055] Reference numerals: 100. Connection structure; 1. First connector; 11. First connection body; 111. First channel; 12. First electrical connector; 121. Metal contact; 122. First circuit board; 1221. First connection terminal; 13. First locking element; 131. Locking block; 1311. Anti-reverse protrusion; 132. Slot; 14. First sealing ring; 15. Mounting sleeve; 151. Insertion cavity; 152. Limiting part. 2. Second connector, 21. Second connector body, 211. Second channel, 212. Annular boss, 213. Connecting segment, 22. Second electrical connector, 221. Metal contact, 222. Second circuit board, 2221. Second connecting terminal, 23. Second locking element, 231. Claw, 232. Buckle, 24. Second sealing ring, 3. Connecting tube, 4. Protective sleeve, 200. Oxygen filling equipment, 300. Equipment to be filled. Detailed Implementation

[0056] Embodiments of the present invention will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0057] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0058] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0059] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical 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 invention based on the specific circumstances.

[0060] In related technologies, portable oxygen-filled devices have separate inflation and charging connectors. During inflation / charging or power-off processes, these connectors must be connected or disconnected separately, making the operation cumbersome. Furthermore, sparks or arcing can easily occur during circuit connection and disconnection, and the high-pressure oxygen flowing in the gas path is an ideal combustion aid. Incorrect operating sequence can easily lead to fires or other safety accidents, posing a significant safety hazard. Generally, in oxygen-filling / charging scenarios, the operating sequence should be "connect oxygen first, then connect power; disconnect power first, then disconnect oxygen."

[0061] This application provides a connection structure, which will be described in detail below with reference to the accompanying drawings.

[0062] Reference Figures 1 to 3 The diagram shows a structural schematic of a connection structure provided in an embodiment of this application. (Refer to...) Figures 4 to 5 This diagram illustrates the structure of a first connector of a connection structure provided in an embodiment of this application. (Refer to...) Figure 6 This diagram illustrates the structure of a second connector of a connection structure provided in an embodiment of this application. (Refer to...) Figures 7 to 9 This shows a schematic diagram of another connection structure provided in an embodiment of this application. (Refer to...) Figure 10 This shows a schematic diagram of the structure of the first connector of another connection structure provided in an embodiment of this application. (Refer to...) Figure 11 The diagram shows a schematic diagram of the structure of the second connector of another connection structure provided in an embodiment of this application.

[0063] like Figures 1 to 3 ,as well as Figures 7 to 9As shown, this application provides a connection structure 100, including: a first connector 1 and a second connector 2; the first connector 1 includes a first connector body 11 and a first electrical connector 12 disposed on the first connector body 11, the first connector body 11 being provided with a first channel 111; the second connector 2 includes a second connector body 21 and a second electrical connector 22 disposed on the second connector body 21, the second connector body 21 being provided with a second channel 211; wherein, the first connector 1 and the second connector 2 have a first connection position and a second connection position that are sequentially engaged, in the first connection position, the first connector body 11 and the second connector body 21 are sealed together, and the first channel 111 and the second channel 211 are in communication; in the second connection position, the first connector body 11 and the second connector body 21 are kept sealed together, and the first electrical connector 12 and the second electrical connector 22 are electrically connected.

[0064] In this embodiment, on the one hand, since the first connector 1 includes a first connecting body 11 and a first electrical connector 12, and the second connector 2 includes a second connecting body 21 and a second electrical connector 22, the connection or disconnection of the gas path and the circuit can be completed in one operation between the first connector 1 and the second connector 2, thereby simplifying the operation process. On the other hand, since the first connector 1 and the second connector 2 have a first connection position and a second connection position that cooperate sequentially, during the process of connecting the first connector 1 and the second connector 2, the first connection position is reached first, the first connecting body 11 and the second connecting body 21 are sealed together, and the first channel 111 and the second channel 211 are connected, thereby realizing the conduction of the gas path. Then, the second connection position is reached, the first connecting body 11 and the second connecting body 21 remain sealed together, and the first electrical connector 12 and the second electrical connector 22 are electrically connected, thereby realizing the conduction of the circuit while ensuring that the gas does not leak. During the connection process between the first connector 1 and the second connector 2, the second connector is first withdrawn from the second connection position. The first connector body 11 and the second connector body 21 maintain a sealed connection, while the first electrical connector 12 and the second electrical connector 22 are disconnected. This disconnects the circuit while ensuring no gas leakage. Then, the first connector is withdrawn from the first connection position, and the first connector body 11 and the second connector body 21 are released from their sealed connection. The first channel 111 and the second channel 211 are no longer connected, thus disconnecting the gas path. In summary, when the connection structure 100 is applied to a gas charging device, it allows for the "connect gas first, then connect electricity; disconnect electricity first, then disconnect gas" operation sequence, effectively avoiding safety hazards caused by incorrect sequence. Especially when the filling gas is oxygen-enriched, since oxygen is a combustion accelerant, and sparks or arcing are easily generated during circuit contact and separation, contact with oxygen-enriched air can easily cause a fire. This design, however, achieves gas path connection first during a single operation (such as insertion, removal, or rotation), and then connects the circuit only after the gas path is completely sealed, thus avoiding the aforementioned safety hazards and improving safety.

[0065] It should be noted that, in this application embodiment, the "first connection position" refers to the mating position of the first connector 1 and the second connector 2 when the first connecting body 11 and the second connecting body 21 begin to be sealed together, that is, a specific position during the assembly process of the first connector 1 and the second connector 2; the "second connection position" refers to the mating position of the first connector 1 and the second connector 2 when the first connecting body 11 and the second connecting body 21 are sealed together and the first electrical connector 12 and the second electrical connector 22 are electrically connected, that is, the position when the first connector 1 and the second connector 2 are fully assembled. Furthermore, the cross-sectional shape of the first channel and the second channel can be circular, elliptical, or other shapes, which can be adjusted according to actual needs by those skilled in the art. It is understood that when the cross-sectional shapes of the first channel and the second channel are the same, they can be better matched, which is beneficial to improving the sealing performance of the connection structure.

[0066] Furthermore, this application does not limit the types of the first electrical connector 12 and the second electrical connector 22, and those skilled in the art can make adjustments according to actual needs. For example... Figure 2 and Figure 4 As shown, in some optional embodiments, one of the first electrical connector 12 and the second electrical connector 22 is a metal contact 221, and the other is a metal contact piece 121. At the second connection position, the metal contact 221 and the metal contact piece 121 are in electrical contact. The contact between the metal contact 221 and the metal contact piece 121 can be in sliding contact or contact pressure contact. Thus, through the electrical contact between the metal contact 221 and the metal contact piece 121, the circuit between the first connector 1 and the second connector 2 can be established. This electrical connection structure 100 is simple, easy to manufacture, and helps reduce the manufacturing difficulty of the connection structure 100.

[0067] like Figure 10 and Figure 11 As shown, in some alternative embodiments, the first electrical connector 12 is a first circuit board 122, which is provided with a first connection terminal 1221; the second electrical connector 22 is a second circuit board 222, which is provided with a second connection terminal 2221. At the second connection position, the second connection terminal 2221 is in electrical contact with the first connection terminal 1221. Thus, through the electrical contact between the first connection terminal 1221 of the first circuit board 122 and the second connection terminal 2221 of the second circuit board 222, the circuit between the first connector 1 and the second connector 2 can be established. This electrical connection structure is 100% reliable and helps improve charging reliability.

[0068] In another embodiment, the cross-sections of the first channel 111 and the second channel 211 are circular or elliptical, and the cross-sections of the connecting terminals of the first electrical connector 12 and / or the second electrical connector 22 are portions embedded within or protruding from the relatively circular or elliptical channel cross-sections. This increases the stability of the connection between the first connector 1 and the second connector 2 and prevents the pipe from coming off.

[0069] In some optional embodiments of this application, the connection structure 100 further includes: a first locking member 13 and a second locking member 23, wherein the first locking member 13 is disposed on the first connection body 11 and the second locking member 23 is disposed on the second connection body 21; in the first connection position, the first locking member 13 and the second locking member 23 are in an unlocked state, and in the second connection position, the first locking member 13 and the second locking member 23 are in a locked state.

[0070] In this embodiment, the presence of a first locking member 13 and a second locking member 23 ensures a reliable connection between the first connector 1 and the second connector 2, preventing pipe detachment due to excessive pressure. Since the first locking member 13 and the second locking member 23 are unlocked at the first connection position and locked at the second connection position, they do not lock during the assembly of the first connector 1 and the second connector 2. Locking only occurs after the first connector 1 and the second connector 2 are properly assembled, effectively preventing premature locking that could lead to improper assembly of the first connector 1 and the second connector 2.

[0071] It should be noted that the connection structure 100 in this embodiment can also achieve locking by adjusting the friction between the first connector 1 and the second connector 2. This locking method is more suitable for situations where the gas pressure in the gas path is low, thereby reducing the processing difficulty and cost of the connection structure 100. For example, the connectors (including the first connector 1 and the second connector 2) can be made of silicone material to increase friction. Combined with the connection between the first electrical connector 12 and the second electrical connector 22, this is sufficient to achieve a stable connection even without a locking element in the connection structure 100.

[0072] In some optional embodiments of this application, the connection structure 100 further includes a connecting pipe 3, which is fixedly connected to the end of the first connector 1 opposite to the second connector 2, and / or, the connecting pipe 3 is fixedly connected to the end of the second connector 2 opposite to the first connector 1. Thus, by providing the connecting pipe 3, different application scenarios (such as scenarios where the distance between the oxygen filling device 200 and the device to be filled 300 is different) can be adapted by adjusting the length of the connecting pipe 3.

[0073] Furthermore, the end of the first connector 1 facing away from the second connector 2, and / or the end of the second connector 2 facing away from the first connector 1, is provided with a connecting portion. At least a portion of the connecting pipe 3 is sleeved on the connecting portion, thereby realizing the connection between the connecting pipe 3 and the first connector 1 and / or the second connector 2. In one embodiment, the connecting portion is a pagoda connector, and the connecting pipe 3 is a high-pressure hose. By sleeved the high-pressure hose on the pagoda connector, the phenomenon of pipe detachment can be effectively limited, and the connection reliability between the connecting pipe 3 and the first connector 1 and / or the second connector 2 can be improved.

[0074] It should be noted that the accompanying drawings of this application only show the case where the connecting pipe 3 is provided at the end of the second connector 2 away from the first connector 1. In actual applications, the connecting pipe 3 can also be provided at the end of the first connector 1 away from the second connector 2, or the connecting pipe 3 can be provided at both the end of the first connector 1 away from the second connector 2 and the end of the second connector 2 away from the first connector 1. This is not limited here, and those skilled in the art can make adjustments according to actual needs.

[0075] In some optional embodiments of this application, the connection structure 100 further includes a protective sleeve 4, which is fitted onto the end of the connecting tube 3 near the first connector 1 and / or the second connector 2. This covers the connection point between the connecting tube 3 and the first connector 1, and / or the connection point between the connecting tube 3 and the second connector 2, thereby reinforcing the connection between the connecting tube 3 and the first connector 1 and / or the second connector 2, and further preventing the risk of detachment. Furthermore, the surface of the protective sleeve 4 may be provided with an anti-slip texture, thereby facilitating handheld connection operations by the operator.

[0076] The following is in conjunction with the appendix Figures 1 to 11 The present application provides a detailed description of two connection structures 100 provided in its embodiments. It is understood that the connection structures 100 in the embodiments of the present application include, but are not limited to, the following two types.

[0077] Example 1

[0078] like Figures 1 to 6 As shown, the first connector 1 further includes: a first sealing ring 14, which is fixedly connected to the inner wall of the first channel 111; at the first connection position and the second connection position, at least a portion of the second connecting body 21 passes through the first sealing ring 14 and is sealed to the first sealing ring 14.

[0079] In this embodiment of the application, since a first sealing ring 14 is provided, the first sealing ring 14 and the second connecting body 21 are sealed together, which can achieve radial sealing of the first connecting body 11 and the second connecting body 21, thereby improving the sealing performance during the assembly process of the first connector 1 and the second connector 2, effectively avoiding gas leakage, and improving the safety of power connection and power disconnection.

[0080] Furthermore, the second connector 2 also includes a second sealing ring 24, which is sleeved on the second connector body 21. In the first connection position and the second connection position, the second sealing ring 24 abuts against the first sealing ring 14.

[0081] In this embodiment of the application, due to the provision of a second sealing ring 24, the second sealing ring 24 abuts against the first sealing ring 14, that is, the second sealing ring 24 and the first sealing ring 14 are pressed and compressed together, which can achieve secondary radial sealing of the first connecting body 11 and the second connecting body 21, thereby further improving the sealing performance during the assembly process of the first connecting head 1 and the second connecting head 2, which is conducive to further improving the safety of power connection and power disconnection.

[0082] It should be noted that the first sealing ring 14 and the first connecting body 11 can be integrally molded or separately molded. It is understood that when the first sealing ring 14 and the first connecting body 11 are integrally molded, the assembly process of the first connector 1 can be simplified. Similarly, the second sealing ring 24 and the second connecting body 21 can be integrally molded or separately molded. It is understood that when the second sealing ring 24 and the second connecting body 21 are integrally molded, the assembly process of the second connector 2 can be simplified. In one embodiment, the first sealing ring 14 and the first connecting body 11, and the second sealing ring 24 and the second connecting body 21 can be injection molded using two different injection molding materials through a two-color injection molding process. The first connecting body 11 and the second connecting body 21 can be made of a hard material (i.e., a material that is not easily deformed), such as plastic, while the first sealing ring 14 and the second sealing ring 24 can be made of a soft material (i.e., a material that is easily deformed), such as silicone.

[0083] Furthermore, one of the first locking member 13 and the second locking member 23 is a claw 231, and the other of the first locking member 13 and the second locking member 23 is a locking block 131; in the first connection position, the claw 231 is disengaged from the locking block 131, and in the second connection position, the claw 231 engages with the locking block 131. This engagement structure of the locking block 131 and the claw 231 is simple and reliable, thereby simplifying the structure of the first connector 1 and the second connector 2 and improving the connection reliability of the first connector 1 and the second connector 2.

[0084] Furthermore, multiple claws 231 and multiple locking blocks 131 are provided, with one claw 231 used to engage with one locking block 131; multiple claws 231 are spaced apart circumferentially along the first connecting body 11, and multiple locking blocks 131 are spaced apart circumferentially along the second connecting body 21; and / or, multiple claws 231 are spaced apart circumferentially along the second connecting body 21, and multiple locking blocks 131 are spaced apart circumferentially along the first connecting body 11.

[0085] In this embodiment, by providing multiple claws 231 and multiple locking blocks 131, multi-point locking can be achieved through the one-to-one correspondence between the claws 231 and the locking blocks 131, thereby improving the connection stability and reliability of the first connector 1 and the second connector 2. Furthermore, since the multiple claws 231 are arranged circumferentially along the first connecting body 11 and / or the second connecting body 21, and the multiple locking blocks 131 are spaced apart circumferentially along the first connecting body 11 and / or the second connecting body 21, on the one hand, the claws 231 and locking blocks 131 can be engaged or disengaged by rotation; on the other hand, the force at the connection point of the first connecting body 11 and the second connecting body 21 can be evenly distributed across the claws 231 and locking blocks 131, effectively avoiding deformation or damage caused by excessive local force, which is beneficial to improving the durability and service life of the first connector 1 and the second connector 2, i.e., the connection structure 100.

[0086] It should be noted that the accompanying drawings of this application only show the case where both the circumferential direction of the first connecting body 11 and the circumferential direction of the second connecting body 21 are provided with claws 231 and blocks 131. However, in practical applications, those skilled in the art may also provide claws 231 only in the circumferential direction of the first connecting body 11 and correspondingly provide blocks 131 in the circumferential direction of the second connecting body 21; or they may provide blocks 131 only in the circumferential direction of the first connecting body 11 and correspondingly provide claws 231 in the circumferential direction of the second connecting body 21. This is not limited here, and those skilled in the art can make adjustments according to actual needs.

[0087] Furthermore, this application embodiment does not limit the number of claws 231 and card blocks 131, and those skilled in the art can adjust them according to actual needs. In one embodiment, such as Figures 4 to 6As shown, four claws 231 are provided, two of which are spaced apart in the circumference of the first connecting body 11, and the other two are spaced apart in the circumference of the second connecting body 21. Correspondingly, four locking blocks 131 are provided, two of which are spaced apart in the circumference of the first connecting body 11, and the other two are spaced apart in the circumference of the second connecting body 21. At the first connection position, the claws 231 and their corresponding locking blocks 131 are staggered to avoid interference between them and the problem of improper assembly. Then, at least one of the first connecting head 1 or the second connecting head 2 is rotated to move from the first connection position to the second connection position. At this time, the claws 231 and their corresponding locking blocks 131 are aligned to achieve locking.

[0088] Furthermore, the locking block 131 has a first mating surface, and the locking claw 231 has a second mating surface; one of the first electrical connector 12 and the second electrical connector 22 is disposed on the first mating surface, and the other of the first electrical connector 12 and the second electrical connector 22 is disposed on the second mating surface. In the second connection position, the first mating surface abuts against the second mating surface to make the first electrical connector 12 and the second electrical connector 22 electrically contact each other. Specifically, the first electrical connector 12 is a metal contact piece 121, and the second electrical connector 22 is a metal contact point 221.

[0089] In this embodiment, since the metal contact 121 is disposed on the first mating surface of the card block 131 and the metal contact 221 is disposed on the second mating surface of the claw 231, by rotating the first connecting body 11 and / or the second connecting body 21, the metal contact 121 and the metal contact 221 can be electrically contacted at the same time as the first mating surface of the card block 131 abuts against the second mating surface of the claw 231, which helps to simplify the connection process of the first connector 1 and the second connector 2.

[0090] Furthermore, the locking block 131 is an arc-shaped locking block 131, and one or both ends of the arc-shaped locking block 131 are provided with anti-reverse protrusions 1311 along its extension direction. In the second connection position, at least a portion of the locking claw 231 abuts against the anti-reverse protrusions 1311 to limit the locking claw 231. Specifically, the anti-reverse protrusions 1311 are provided on the first mating surface of the arc-shaped locking block 131.

[0091] In this embodiment of the application, since a backstop protrusion 1311 is provided, the backstop protrusion 1311 abuts against the claw 231, which can limit the claw 231 and prevent the first connector 1 and the second connector 2 from retracting from the second connection position to the first connection position, thereby improving the reliability and safety of the connection structure 100.

[0092] The following provides an example of a connection and disconnection process for the connection structure 100 of Embodiment 1:

[0093] Connection process: First, push the second connector 2 to insert it into the first connector 1; second, continue to push the second connector 2 to reach the first connection position. During this process, the second connector body 21 and the first sealing ring 14, and the first sealing ring 14 and the second sealing ring 24 form a double seal to achieve air passage; third, rotate the second connector 2 to reach the second connection position. During this process, the metal contact 221 and the metal contact piece 121 make electrical contact to achieve circuit conduction, and the claw 231 engages with the block 131 to achieve locking.

[0094] Disconnection process: First, rotate the second connector 2 to exit the second connection position. During this process, the metal contact 221 and the metal contact piece 121 lose electrical contact to achieve circuit disconnection, and the claw 231 and the locking block 131 disengage to achieve unlocking. Second, pull the second connector 2 to exit the second connection position. During this process, the second connector body 21 and the first sealing ring 14, and the first sealing ring 14 and the second sealing ring 24 are unsealed to achieve gas path disconnection. Finally, under the action of the remaining high-pressure gas inside and / or by continuing to pull the second connector 2, the second connector 2 is completely disengaged from the first connector 1.

[0095] Example 2

[0096] like Figures 7 to 11 As shown, the second connector 2 further includes: a second sealing ring 24; an annular boss 212 is provided on the inner wall of the second channel 211, and the second sealing ring 24 is fixedly connected to the annular boss 212; at the first connection position and the second connection position, at least a portion of the first connecting body 11 extends into the second channel 211 and abuts against the second sealing ring 24.

[0097] In this embodiment, the second sealing ring 24 is provided. By abutting the first connecting body 11 with the second sealing ring 24, the first connecting body 11 and the second connecting body 21 can be sealed together, thereby improving the sealing performance during the assembly process of the first connector 1 and the second connector 2, effectively avoiding gas leakage, and improving the safety of power connection and power disconnection.

[0098] It should be noted that the second sealing ring 24 and the second connecting body 21 can be integrally molded or separately molded. It is understood that when the second sealing ring 24 and the second connecting body 21 are integrally molded, the assembly process of the second connector 2 can be simplified. In one embodiment, the second sealing ring 24 and the second connecting body 21 can be injection molded using two different injection molding materials through a two-color injection molding process. The second connecting body 21 can be made of a hard material (i.e., a material that is not easily deformed), such as plastic, while the second sealing ring 24 can be made of a soft material (i.e., a material that is easily deformed), such as silicone.

[0099] Furthermore, one of the first locking member 13 and the second locking member 23 is a slot 132, and the other of the first locking member 13 and the second locking member 23 is a buckle 232; in the first connection position, the slot 132 and the buckle 232 are disengaged, and in the second connection position, the slot 132 and the buckle 232 are engaged.

[0100] Specifically, the first connector 1 further includes a mounting sleeve 15, which is fitted onto the first connector body 11 and surrounds the first connector body 11 to form a insertion cavity 151. A slot 132 is disposed in the mounting sleeve 15. The second connector body 21 includes a connecting segment 213, and a buckle 232 is disposed in the connecting segment 213. In the second connection position, the connecting segment 213 is inserted into the insertion cavity 151 so that the slot 132 and the buckle 232 engage. When unlocking, simply squeezing the second connector body 21 to deform the connecting segment 213 will disengage the buckle 232 from the slot 132. Furthermore, the surface of the second connector body 21 is also provided with an anti-slip textured structure for ease of operation.

[0101] In this embodiment, since the slot 132 is disposed on the mounting sleeve 15 and the buckle 232 is disposed on the connecting section 213, when the connecting section 213 and the insertion cavity 151 are in place, that is, when the second connection position is reached, the slot 132 and the buckle 232 engage to achieve locking. Moreover, the engagement structure of the slot 132 and the buckle 232 is simple and reliable, thereby simplifying the structure of the first connector 1 and the second connector 2 and improving the connection reliability of the first connector 1 and the second connector 2.

[0102] Furthermore, the first electrical connector 12 is disposed on the mounting sleeve 15, and the second electrical connector 22 is disposed on the connecting section 213; at the second connection position, the connecting section 213 is inserted into the insertion cavity 151 so that the first electrical connector 12 and the second electrical connector 22 make electrical contact. Specifically, the first electrical connector 12 is a first circuit board 122 provided with a first connecting terminal 1221, and the second electrical connector 22 is a second circuit board 222 provided with a second connecting terminal 2221.

[0103] In this embodiment, since the first circuit board 122 is disposed on the mounting sleeve 15 and the second circuit board 222 is disposed on the connecting section 213, by pushing the first connecting body 11 and / or the second connecting body 21, the first connecting terminal 1221 of the first circuit board 122 and the second connecting terminal 2221 of the second circuit board 222 can be electrically contacted when the connecting section 213 and the insertion cavity 151 are in place, which helps to simplify the connection process of the first connector 1 and the second connector 2.

[0104] It should be noted that the first circuit board 122 can be fixedly connected to the first connecting body 11 or detachably connected to the first body. Similarly, the second circuit board 222 can be fixedly connected to the second connecting body 21 or detachably connected to the second body. No limitation is made here, and those skilled in the art can adjust it according to actual needs.

[0105] Furthermore, the mounting sleeve 15 extends from one end near the second connecting body 21 toward the center of the first connecting body 11 to form a limiting portion 152. In the second connection position, the limiting portion 152 abuts against at least a portion of the second connecting body 21 to limit the second connecting body 21.

[0106] In this embodiment of the application, since a limiting part 152 is provided, the second connecting body 21 can be limited by the contact between the limiting part 152 and the second connecting body 21, so as to avoid the power failure caused by the first connecting head 1 and the first connecting head 1 crossing the second connecting position, which is beneficial to improving the reliability and safety of the connecting structure 100.

[0107] The following provides an example of the connection and disconnection process of the connection structure 100 in Embodiment 2:

[0108] Connection process: First, push the second connector 2 to insert it into the first connector 1; second, continue to push the second connector 2 to reach the first connection position. During this process, the first connection body 11 abuts against the second sealing ring 24 to achieve air passage; third, continue to push the second connector 2 to reach the second connection position. During this process, the first connection terminal 1221 and the second connection terminal 2221 make electrical contact to achieve circuit conduction, and the slot 132 engages with the buckle 232 to achieve locking.

[0109] Disconnection process: First, pull the second connector 2 to exit the second connection position. During this process, the first connection terminal 1221 and the second connection terminal 2221 lose electrical contact to achieve circuit disconnection, and the slot 132 and the buckle 232 are released to achieve unlocking. Second, continue to pull the second connector 2 to exit the second connection position. During this process, the first connection body 11 and the second sealing ring 24 are released from contact to achieve gas path disconnection. Finally, under the action of the remaining high-pressure gas inside and / or continue to pull the second connector 2 to make the second connector 2 completely disengage from the first connector 1.

[0110] In summary, the connection structure provided in this application embodiment has at least the following advantages:

[0111] In this embodiment, on the one hand, since the first connector includes a first connecting body and a first electrical connector, and the second connector includes a second connecting body and a second electrical connector, the connection or disconnection of the gas path and the circuit can be completed in one operation between the first connector and the second connector, thereby simplifying the operation process. On the other hand, since the first connector and the second connector have a first connection position and a second connection position that cooperate sequentially, during the process of connecting the first connector and the second connector, the first connection position is reached first, the first connecting body and the second connecting body are sealed together, and the first channel and the second channel are connected, thereby realizing the conduction of the gas path. Then, the second connection position is reached, the first connecting body and the second connecting body remain sealed together, and the first electrical connector and the second electrical connector are electrically connected, thereby realizing the conduction of the circuit while ensuring that the gas does not leak. During the connection process between the first and second connectors, firstly, the second connector is withdrawn, maintaining a sealed connection between the first and second connectors, while the first and second electrical connectors are disconnected. This disconnects the circuit while ensuring no gas leakage. Secondly, the first connector is withdrawn, releasing the sealed connection between the first and second connectors, discontinuing the connection between the first and second channels, thus disconnecting the gas path. In summary, when this connection structure is applied to oxygen charging scenarios, it allows for the "connect oxygen first, then connect electricity; disconnect electricity first, then disconnect oxygen" operation sequence, effectively avoiding safety hazards caused by incorrect sequence.

[0112] Reference Figure 12 The diagram shows a structural schematic of an oxygen filling system provided in an embodiment of this application. Figure 12 As shown in the illustration, this application also provides an oxygen filling system, including: an oxygen filling device 200, a device to be filled 300, and a connection structure 100 as described in any of the above embodiments. The connection structure 100 is disposed between the oxygen filling device 200 and the device to be filled 300 and is connected to both the oxygen filling device 200 and the device to be filled 300. In one embodiment, the connection structure 100 includes a connecting pipe 3, two first connectors 1 and a second connector 2. The two first connectors 1 are respectively disposed on the oxygen filling device 200 and the device to be filled 300, and the two second connectors 2 are respectively disposed at both ends of the connecting pipe 3. The oxygen filling device 200 and the device to be filled 300 can be connected by connecting one second connector 2 to one first connector 1. The oxygen filling device is not limited to an oxygen generator, oxygen filling equipment, an integrated oxygen generator and filling machine, high-pressure oxygen cylinder, etc. The device to be filled 300 can be a single oxygen cylinder or an oxygen supply device composed of multiple oxygen cylinders, etc., which has an electronic oxygen output control device, such as an oxygen output valve.

[0113] In one embodiment, the connecting tube 3 is wound with conductive wires inside, and the two ends of the conductive wires are electrically connected to two second connectors 2 respectively. Two first connectors 1 are respectively disposed on the oxygen filling device 200 and the device to be filled 300. The first electrical connector 12 in the first connector 1 disposed on the oxygen filling device 200 is electrically connected to the power supply or circuit board inside the oxygen filling device 200. The first electrical connector 12 in the first connector 1 disposed on the device to be filled 300 can be disposed in or electrically connected to the electronic oxygen output control device. When the device to be filled 300 is connected to the oxygen filling device 200 through the connecting structure 100, the oxygen filling device 200 will first determine whether the device to be filled 300 is electrically connected correctly. Only after the correct connection is made will the oxygen filling device 200 be allowed to start. In this way, the device to be filled 300 is charged while it is being filled with gas.

[0114] It should be noted that in this embodiment, the structure of the connecting structure 100 is the same as that of the connecting structure 100 in any of the above embodiments, and its beneficial effects are similar, so it will not be described in detail here. It should also be noted that the oxygen filling device 200 includes, but is not limited to, an oxygen generator, an integrated oxygen generator and oxygen filling machine, etc., and the device to be filled 300 is an oxygen-fillable oxygen inhalation device, including but not limited to, an oxygen backpack, a portable oxygen cylinder, etc.

[0115] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0116] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A connection structure, characterized in that, include: First connector and second connector; The first connector includes a first connector body and a first electrical connector disposed on the first connector body, wherein the first connector body is provided with a first channel; The second connector includes a second connector body and a second electrical connector disposed on the second connector body, wherein the second connector body is provided with a second channel; The first connector and the second connector have a first connection position and a second connection position that are sequentially engaged. In the first connection position, the first connection body and the second connection body are sealed together, and the first channel is connected to the second channel. In the second connection position, the first connection body and the second connection body are sealed together, and the first electrical connector is electrically connected to the second electrical connector.

2. The connection structure according to claim 1, characterized in that, The connection structure further includes: a first locking member and a second locking member, wherein the first locking member is disposed on the first connection body and the second locking member is disposed on the second connection body; In the first connection position, the first locking member and the second locking member are in an unlocked state; in the second connection position, the first locking member and the second locking member are in a locked state.

3. The connection structure according to claim 1 or 2, characterized in that, The first connector further includes: a first sealing ring, which is fixedly connected to the inner wall of the first channel; At the first connection position and the second connection position, at least a portion of the second connection body passes through the first sealing ring and is sealed to the first sealing ring.

4. The connection structure according to claim 3, characterized in that, The second connector further includes a second sealing ring, which is sleeved on the second connector body, and the second sealing ring abuts against the first sealing ring at the first connection position and the second connection position.

5. The connection structure according to claim 2, characterized in that, One of the first locking member and the second locking member is a claw, and the other of the first locking member and the second locking member is a locking block; In the first connection position, the claw disengages from the block; in the second connection position, the claw engages with the block.

6. The connection structure according to claim 5, characterized in that, The claw is provided in multiple ways, and the block is provided in multiple ways. One claw is used to engage with one block. The plurality of said claws are arranged at circumferential intervals along the first connecting body, and the plurality of said locking blocks are arranged at circumferential intervals along the second connecting body; and / or, the plurality of said claws are arranged at circumferential intervals along the second connecting body, and the plurality of said locking blocks are arranged at circumferential intervals along the first connecting body.

7. The connection structure according to claim 6, characterized in that, The card block has a first mating surface, and the card claw has a second mating surface; One of the first electrical connector and the second electrical connector is disposed on the first mating surface, and the other of the first electrical connector and the second electrical connector is disposed on the second mating surface. At the second connection position, the first mating surface abuts against the second mating surface to make the first electrical connector and the second electrical connector electrically contact each other.

8. The connection structure according to claim 5, characterized in that, The locking block is an arc-shaped locking block, and one or both ends of the arc-shaped locking block are provided with anti-reverse protrusions along its extension direction. At the second connection position, at least a portion of the locking claw abuts against the anti-reverse protrusions to limit the locking claw.

9. The connection structure according to claim 1 or 2, characterized in that, The second connector also includes: a second sealing ring; The inner wall of the second channel is provided with an annular boss, and the second sealing ring is fixedly connected to the annular boss; At the first connection position and the second connection position, at least a portion of the first connection body extends into the second channel and abuts against the second sealing ring.

10. The connection structure according to claim 2, characterized in that, One of the first locking member and the second locking member is a slot, and the other of the first locking member and the second locking member is a buckle; In the first connection position, the slot is disengaged from the buckle; in the second connection position, the slot engages with the buckle.

11. The connection structure according to claim 10, characterized in that, The first connector also includes a mounting sleeve, which is fitted onto the first connector body and surrounds the first connector body to form a insertion cavity, and the slot is provided in the mounting sleeve; The second connecting body includes a connecting segment, and the buckle is disposed on the connecting segment; In the second connection position, the connecting segment is inserted into the insertion cavity so that the slot and the buckle engage.

12. The connection structure according to claim 11, characterized in that, The first electrical connector is disposed on the mounting sleeve, and the second electrical connector is disposed on the connecting segment; At the second connection position, the connecting segment is inserted into the insertion cavity so that the first electrical connector and the second electrical connector make electrical contact.

13. The connection structure according to claim 11 or 12, characterized in that, The mounting sleeve extends from one end near the second connecting body toward the center of the first connecting body to form a limiting part. At the second connection position, the limiting part abuts against at least a portion of the second connecting body to limit the second connecting body.

14. The connection structure according to claim 1, characterized in that, One of the first electrical connector and the second electrical connector is a metal contact, and the other of the first electrical connector and the second electrical connector is a metal contact piece. At the second connection position, the metal contact and the metal contact piece are in electrical contact.

15. The connection structure according to claim 1, characterized in that, The first electrical connector is a first circuit board, and the first circuit board is provided with a first connection terminal; The second electrical connector is a second circuit board, which is provided with a second connection terminal. At the second connection position, the second connection terminal is in electrical contact with the first connection terminal.

16. The connection structure according to claim 1, characterized in that, The connection structure further includes a connecting pipe, which is fixedly connected to the end of the first connector opposite to the second connector, and / or, the connecting pipe is fixedly connected to the end of the second connector opposite to the first connector.

17. The connection structure according to claim 16, characterized in that, The connection structure also includes a protective sleeve, which is fitted onto one end of the connecting tube near the first connector and / or the second connector.

18. The connection structure according to claim 16, characterized in that, The connecting pipe is provided with conductive lines, which are electrically connected to the first electrical connector and / or the second electrical connector.

19. An oxygen filling system, characterized in that, include: An oxygenation device, a device to be filled, and a connection structure as described in any one of claims 1-18, wherein the connection structure is disposed between the oxygenation device and the device to be filled and is connected to the oxygenation device and the device to be filled.

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