Portable double-system gas pipe joint

Abstract

The utility model belongs to the technical field of air pipe joint accessories, and particularly relates to a portable double-system air pipe joint which comprises a mouthpiece sleeve provided with a hollow channel, a mouthpiece core, a mouthpiece nut and a fixing piece, the mouthpiece core is arranged in the hollow channel in a sliding mode, one end of the mouthpiece core is used for penetrating out of one end of the hollow channel, and the other end of the mouthpiece core is used for penetrating out of the other end of the hollow channel. The mouthpiece nut is detachably installed at the other end of the hollow channel, the outer side wall of the mouthpiece nut is connected with the inner wall of the hollow channel in a sealed mode, and the fixing piece is arranged in the hollow channel and used for making the mouthpiece core stop at the preset position of the hollow channel. The air pipe connector has the advantages that the use cost of the air pipe connector is reduced, operations such as pre-installation are not needed, and assembling is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of tracheal joint accessories, in particular to a portable dual-system tracheal joint. Background Technique

[0002] At present, portable air pumps used for inflating equipment or devices such as vehicle tires are widely applied. In order to connect the air pump with the inflating equipment or device, an air tube is required. One end of the air tube is provided with an air tube nut. Since in different countries or regions, the thread systems at the interfaces of the inflating equipment or device are not consistent. For example, the interfaces in some countries or regions adopt American standard threads, and the interfaces in some countries or regions adopt French standard threads, British standard threads, etc. At present, the air tube nut on the air tube is only provided with one type of thread system, which means that this air tube can only be connected to the interface of this thread system. If it is necessary to connect to the interface thread of another thread system, an additional air tube or an additional adapter needs to be configured. However, whether an additional air tube or an additional adapter is configured, there are deficiencies such as inconvenient use, inconvenient carrying, and increased consumer costs for users.

[0003] In the related art, according to an air tube with a multi-functional air tube nut with the patent number "202022457286.X", an annular fitting groove is provided on the inner wall of a cylindrical body, a snap ring is arranged in the groove, and at the same time, a first abutting convex ring and a second abutting convex ring are arranged on the outer wall of the air nozzle body. A stepped surface is formed at the joint of the first abutting convex ring and the second abutting convex ring, and the inner diameter of the snap ring is smaller than the diameter of the first abutting convex ring but larger than the diameter of the second abutting convex ring. Through the cooperation of the snap ring with the first abutting convex ring and the second abutting convex ring, the air tube can realize the switching of different thread systems.

[0004] During the production process of the air tube, it is necessary to first machine the fitting groove on the inner wall of the cylindrical body. The air nozzle core assembly needs to be pre-loaded at one end with the annular fitting groove, and then the snap ring is loaded into the fitting groove. After the assembly is completed, the whole air tube is non-detachable and the parts cannot be replaced. At the same time, the process is complex, and the part cost, machining cost, and assembly cost are relatively high.

[0005] Therefore, the existing technology needs to be improved. Content of the Utility Model

[0006] In order to make up for the deficiencies of the existing technology, this application proposes a portable dual-system tracheal joint.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0008] A portable dual-mode tracheal connector, comprising a nozzle sleeve provided with a hollow channel and a nozzle core, the nozzle core being slidably disposed in the hollow channel, one end of the nozzle core being adapted to protrude from one end of the hollow channel, further comprising a nozzle nut and a fixing member, the nozzle nut being detachably mounted at the other end of the hollow channel, the outer wall of the nozzle nut being sealingly connected to the inner wall of the hollow channel, the fixing member being disposed in the hollow channel, the fixing member being adapted to stop the nozzle core at a predetermined position in the hollow channel.

[0009] By adopting the above technical solution, when assembling the tracheal connector, first install the nozzle core into the hollow channel and make one end of the nozzle core protrude from the hollow channel. Then, install the nozzle nut into the hollow channel from the other end in a sealed connection manner. The fixing member is used to make the nozzle core stay at different positions in the hollow channel to facilitate connection with inflation device interfaces of different modes. When disassembly is required, the nozzle nut can be removed through the detachable connection between the nozzle nut and the hollow channel. At this time, the nozzle nut will not block the nozzle core, and the nozzle core can be taken out from one side of the nozzle nut. This design method divides the tracheal connector into three separate components: the nozzle sleeve, the nozzle core, and the nozzle nut through the detachable nozzle nut. And after a part is damaged, the parts can be replaced separately, thereby reducing the use cost of the tracheal connector. At the same time, during the assembly process, only the nozzle core and the nozzle nut need to be installed in sequence, without the need for pre-installation and other operations. The assembly is simple and the cost is low.

[0010] Preferably, a first annular groove is provided on one side of the hollow channel close to the nozzle nut, the side wall of the first annular groove being sealingly connected to the nozzle nut, and the bottom of the first annular groove being in contact with the nozzle nut.

[0011] By adopting the above technical solution, due to the provision of the first annular groove, during the installation process of the nozzle nut, the nozzle nut will abut against the bottom of the first annular groove to block the nozzle nut, so that the nozzle nut can be installed in the correct position, facilitating the subsequent installation and disassembly of the nozzle nut.

[0012] Preferably, the nozzle nut is tightly and fittingly abutted against the side wall of the first annular groove.

[0013] By adopting the above technical solution, during the installation process of the nozzle nut, align the nozzle nut with the notch of the first annular groove, and then forcefully push the nozzle nut into the first annular groove until the nozzle nut abuts against the bottom of the first annular groove. Through the tight abutment between the side wall of the first annular groove and the outer side wall of the nozzle nut, the nozzle nut can be stably installed on the nozzle sleeve. At the same time, the tight abutment between the side wall of the first annular groove and the outer side wall of the nozzle nut can achieve the sealing between the nozzle nut and the hollow channel. When it needs to be disassembled, only need to forcefully pull out the nozzle nut from the hollow channel, thus the detachable installation of the nozzle nut can be completed.

[0014] Preferably, a second annular groove is provided on the outer side wall of the nozzle nut, and a first sealing ring is provided in the second annular groove. The first sealing ring is used to extend from the second annular groove and tightly abut against the side wall of the first annular groove.

[0015] By adopting the above technical solution, through the tight abutment between the first sealing ring and the side wall of the first annular groove, the nozzle nut is further stably installed on the hollow channel, and the sealing effect can be further improved.

[0016] Preferably, the outer side wall of the nozzle nut is threadedly connected to the inner side wall of the hollow channel.

[0017] By adopting the above technical solution, the nozzle nut and the nozzle sleeve are detachably connected by means of threaded connection, which is simple and convenient.

[0018] Preferably, the fixing member includes a blocking ring, an abutting convex ring and a second sealing ring. The blocking ring is arranged on the inner wall of the hollow channel on the side far from the nozzle nut. One end of the nozzle core passes through the inner ring of the blocking ring. The abutting convex ring is arranged on the outer side wall of the nozzle core. The abutting convex ring is arranged in the hollow channel. The abutting convex ring is used to abut against the blocking ring. A third annular groove is arranged on the outer side wall of the abutting convex ring. The second sealing ring is arranged in the third annular groove. The second sealing ring is used to extend from the third annular groove to abut against the inner side wall of the hollow channel.

[0019] By adopting the above technical solution, due to the arrangement of the blocking ring, the abutting convex ring and the second sealing ring in the fixing member, the nozzle nut and the blocking ring will form a movable space in the hollow channel. The distance between the nozzle nut and the blocking ring is the range of movement of the nozzle core. By blocking the abutting convex ring by the nozzle nut and the blocking ring, the separation of the nozzle core from the nozzle sleeve can be avoided. At the same time, the setting of the second sealing ring can not only increase the friction between the nozzle core and the inner wall of the hollow channel, enable the nozzle core to stay stably in the hollow channel, but also improve the sealing between the nozzle core and the nozzle sleeve.

[0020] Preferably, a serrated convex ring is provided on the outer side wall of one end of the mouthpiece core extending out of the hollow channel. A trachea is sleeved on one end of the mouthpiece core extending out of the hollow channel, and the trachea is sleeved on the part of the mouthpiece core where the serrated convex ring is located.

[0021] By adopting the above technical solution, due to the setting of the serrated convex ring, when the trachea is sleeved on one end of the mouthpiece core extending out of the hollow channel, the serrated convex ring will abut against the inner wall of the trachea. Compared with the direct tight-fitting sleeve method, in this design method, the connection strength between the trachea and the mouthpiece core is more stable, the trachea is not easily detached from the connection, and at the same time, the sealing performance can be improved.

[0022] Preferably, a pipe locking sleeve is sleeved on the trachea, and the pipe locking sleeve is tightly sleeved at the connection between the trachea and the mouthpiece core.

[0023] By adopting the above technical solution, due to the setting of the pipe locking sleeve, when the trachea is sleeved on the mouthpiece core, the pipe locking sleeve is tightly sleeved at the connection between the trachea and the mouthpiece core. Through the extrusion action of the pipe locking sleeve, the connection between the trachea and the pipe locking sleeve is made more stable and the sealing performance is better.

[0024] Preferably, a convex block is provided on the outer side wall of the mouthpiece sleeve. A limiting through groove is provided on one side surface of the convex block away from the mouthpiece sleeve. A connecting sleeve is spacedly sleeved on one end of the mouthpiece core extending out of the hollow channel. A connecting ring is provided on the inner wall of one side of the connecting sleeve away from the mouthpiece nut. The inner side wall of the connecting ring is used for rotationally abutting against the mouthpiece sleeve. A clamping block is provided inside the connecting sleeve near the mouthpiece nut. The clamping block is L-shaped and is arranged towards the connecting ring. The inner side of the clamping block is used for placing the convex block. A limiting block is provided on the inner side of the clamping block, and the limiting block is used for being clamped into the limiting through groove.

[0025] By adopting the above technical solution, when the trachea joint form is in the American standard, at this time, the mouthpiece core is moved towards the direction close to the mouthpiece nut until the mouthpiece nut abuts against the abutting convex ring. Then the connecting sleeve is rotated so that the convex block is located inside the clamping block of the connecting sleeve. At this time, the limiting block will be clamped into the limiting through groove. When it is necessary to change to a trachea joint of other standards, the connecting sleeve is rotated in the reverse direction so that the convex block is relatively rotated out of the clamping block, and then the mouthpiece core can be normally slid. In this design method, through the cooperation of the clamping block and the convex block, and the limiting block and the limiting through groove, the limitation of the connecting sleeve in the axial and circumferential directions is realized, and the phenomenon that the mouthpiece core slides when the trachea joint is in the American standard can be avoided as much as possible.

[0026] Preferably, the mouthpiece sleeve is made of a plastic material with good heat insulation property.

[0027] By adopting the above technical solution, since a relatively large amount of heat is generated during the use of the air pipe joint, the nozzle sleeve is made of a plastic material with good heat insulation properties, which can play a role in heat insulation and prevent scalding, and can avoid the problem of scalding the user's hand when picking up the air pipe nozzle, thereby improving the comfort performance of use.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. When assembling the air pipe joint, first install the nozzle core into the hollow channel, and make one end of the nozzle core pass through the hollow channel. Then, install the nozzle nut into the hollow channel from the other end in a sealed connection manner. The fixing member is used to make the nozzle core stay at different positions in the hollow channel to facilitate connection with the interfaces of different types of inflation devices. When disassembly is required, the nozzle nut can be disassembled through the detachable connection between the nozzle nut and the hollow channel. At this time, the nozzle nut will not block the nozzle core, and the nozzle core can be taken out from one side of the nozzle nut. In this design method, through the detachable nozzle nut, the air pipe joint is divided into three separate components: the nozzle sleeve, the nozzle core, and the nozzle nut. And after the parts are damaged, the parts can be replaced separately, thereby reducing the use cost of the air pipe joint. At the same time, during the assembly process, only the nozzle core and the nozzle nut need to be installed in sequence, and no pre-installation operations are required. The assembly is simple and the cost is low;

[0030] 2. Due to the arrangement of the fixing member including the blocking ring, the abutting convex ring, and the second sealing ring, the nozzle nut and the blocking ring will form a movable space in the hollow channel. The distance between the nozzle nut and the blocking ring is the range of movement of the nozzle core. By blocking the abutting convex ring by the nozzle nut and the blocking ring, the separation of the nozzle core from the nozzle sleeve can be avoided. At the same time, the setting of the second sealing ring can not only increase the friction force between the nozzle core and the inner wall of the hollow channel, enabling the nozzle core to stay stably in the hollow channel, but also improve the sealing performance between the nozzle core and the nozzle sleeve;

[0031] 3. When the air pipe joint is in the American standard form, move the nozzle core towards the nozzle nut until the nozzle nut abuts against the abutting convex ring. Then rotate the connecting sleeve so that the convex block is inside the clamping block of the connecting sleeve. At this time, the limiting block will snap into the limiting through groove. When it is necessary to change to an air pipe joint of other standards, rotate the connecting sleeve in the reverse direction so that the convex block rotates out of the clamping block relatively, and then the nozzle core can be slid normally. In this design method, through the cooperation of the clamping block and the convex block, and the limiting block and the limiting through groove, the limitation of the connecting sleeve in the axial and circumferential directions can be realized, and the phenomenon of the nozzle core sliding when the air pipe joint is in the American standard form can be avoided as much as possible;

[0032] 4. During the use of the tracheal connector, a relatively large amount of heat will be generated. Therefore, the nozzle sleeve is made of a plastic material with good heat insulation properties, which can play a role in heat insulation and prevent scalding, avoid the problem of scalding the user's hand when picking up the tracheal nozzle, and improve the comfort performance of use. Brief Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0034] Figure 1 It is the overall view of the tracheal nozzle in the embodiment of this application when it is in the American standard;

[0035] Figure 2 It is the cross-sectional view of the tracheal nozzle in the embodiment of this application when it is in the American standard;

[0036] Figure 3 It is the overall view of the tracheal nozzle in the embodiment of this application when it is not in the American standard;

[0037] Figure 4 It is the cross-sectional view of the tracheal nozzle in the embodiment of this application when it is not in the American standard;

[0038] Figure 5 It is the exploded cross-sectional view of the tracheal nozzle in the embodiment of this application;

[0039] Figure 6 It is the partial exploded schematic diagram of the tracheal nozzle in the embodiment of this application;

[0040] Figure 7 It is the schematic diagram of the connecting sleeve in the embodiment of this application.

[0041] Explanation of the reference numerals in the drawings: 1. Nozzle sleeve; 11. Hollow channel; 12. First annular groove; 13. Protrusion; 14. Restricting through groove; 2. Nozzle core; 21. Serrated convex ring; 3. Nozzle nut; 31. Second annular groove; 32. First sealing ring; 4. Fixing member; 41. Blocking ring; 42. Abutting convex ring; 43. Third annular groove; 44. Second sealing ring; 5. Trachea; 6. Pipe locking sleeve; 7. Connecting sleeve; 71. Connecting ring; 72. Block; 73. Restricting block. Detailed Description of the Embodiments

[0042] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0043] An embodiment of the present application discloses a portable dual-standard tracheal joint.

[0044] Referring to Figures 1 to 7 , a portable dual-standard tracheal joint includes a mouthpiece sleeve, a nozzle core 2, a nozzle nut 3, and a fixing member 4. Specifically, the mouthpiece sleeve 1 is tubular, and a hollow channel 11 is coaxially arranged along the axis of the mouthpiece sleeve 1. The nozzle core 2 is strip-shaped, and the nozzle core 2 is slidably arranged in the hollow channel 11, and the sliding direction of the nozzle core 2 is along the axis direction of the mouthpiece sleeve 1. One end of the nozzle core 2 penetrates out from one end of the hollow channel 11. The nozzle nut 3 is detachably arranged at the other end of the hollow channel 11. At the same time, the connection between the nozzle nut 3 and the hollow channel 11 is a sealed connection. One side of the inner wall of the nozzle nut 3 is provided with a US standard thread, and the other side is provided with a non-US standard thread. And the non-US standard thread can adopt a French standard thread or a British standard thread according to different market sales situations. And a sealing ring is also arranged between the US standard thread and the non-US standard thread; the fixing member 4 is arranged in the hollow channel 11, and the fixing member 4 is used to make the nozzle core 2 stay at a predetermined position in the hollow channel 11 to perform the standard conversion of the tracheal joint. Therefore, during the installation of the tracheal joint, the nozzle core 2 can be first inserted into the hollow channel 11 from one end of the nozzle nut 3 and make part of it penetrate out from the other end, and then the nozzle nut 3 is installed through the detachable connection between the nozzle nut 3 and the mouthpiece sleeve 1 to complete the installation of the tracheal joint. When disassembling, only the nozzle nut 3 needs to be removed and then the nozzle core 2 can be taken out. This design method divides the whole tracheal joint into three separate components: the mouthpiece sleeve 1, the nozzle nut 3, and the nozzle core 2. And the parts can be replaced separately after being damaged, so that the use cost of the tracheal joint can be reduced. At the same time, during the assembly process, only the nozzle core 2 and the nozzle nut 3 need to be installed in sequence, and no pre-installation and other operations are required. The assembly is simple and the cost is low.

[0045] Referring to Figures 1 to 5, in order to enable the nozzle nut 3 to be installed at a predetermined position in the hollow channel 11, a first annular groove 12 is provided on the side wall of the hollow channel 11 on the side of the nozzle nut 3. The bottom of the first annular groove 12 communicates with the hollow channel 11 and is coaxially arranged with the hollow channel 11. The cross-sectional area of the bottom of the first annular groove 12 is larger than the cross-sectional area of the hollow channel 11, so that the overall shape of the hollow channel 11 is stepped. Therefore, when the nozzle nut 3 is installed, when the nozzle nut 3 abuts against the bottom of the first annular groove 12, it means that the nozzle nut 3 has been installed to the predetermined position. At the same time, the bottom of the first annular groove 12 can also limit the position of the nozzle nut 3, and can prevent the nozzle nut 3 from continuing to move inward into the hollow channel 11, so as to facilitate the disassembly of the nozzle nut 3.

[0046] Refer to Figure 5 and Figure 6 , in this embodiment, the outer diameter of the nozzle nut 3 is slightly larger than the inner diameter of the first annular groove 12. Therefore, when the nozzle nut 3 is installed in the first annular groove 12, an interference fit is achieved between the outer side wall of the nozzle nut 3 and the inner side wall of the first annular groove 12, that is, a tight fit. The nozzle nut 3 is stably installed in the first annular groove 12 through the interference fit, and it is required not to loosen under a pressure of 200 PSI. At the same time, a second annular groove 31 is provided on the outer side wall of the nozzle nut 3, and a first sealing ring 32 is provided in the second annular groove 31. The first sealing ring 32 extends out of the groove opening of the second annular groove 31 and tightly abuts against the side wall of the first annular groove 12. Under the action of the first sealing ring 32, the stability of the nozzle nut 3 can be further improved, and the sealing performance of the nozzle nut 3 installed in the first annular groove 12 can be improved.

[0047] In another embodiment, an external thread can be provided on the outer side wall of the nozzle nut 3, and an internal thread can be provided on the side wall of the first annular groove 12, so that the nozzle nut 3 is threadedly connected to the side wall of the first annular groove 12, and the detachable connection between the nozzle nut 3 and the nozzle sleeve 1 can also be achieved.

[0048] Refer to Figures 1 to 6, the fixing member 4 includes a blocking ring 41, an abutting convex ring 42 and a second sealing ring 44. The blocking ring 41 is circular, and the blocking ring 41 is integrally provided with the nozzle sleeve 1. The blocking ring 41 is arranged at the edge of the pipe orifice at the end of the hollow channel 11 away from the nozzle nut 3, and the blocking ring 41 is coaxially arranged with the axis of the nozzle sleeve 1. The inner ring of the blocking ring 41 is used for the nozzle core 2 to pass through. The abutting convex ring 42 is integrally arranged on the outer side wall of the nozzle core 2, and the abutting convex ring 42 is coaxially arranged with the nozzle core 2, and the abutting convex ring 42 is located in the hollow channel 11. A third ring groove 43 is formed on the outer side wall of the abutting convex ring 42, and the second sealing ring 44 is arranged in the third ring groove 43, and the second sealing ring 44 will protrude from the notch of the third ring groove 43 to tightly abut against the inner wall of the hollow channel 11. Therefore, when the nozzle core 2 slides, the abutting convex ring 42 will always slide between the nozzle nut 3 and the blocking ring 41. The side surfaces of the nozzle nut 3 and the blocking ring 41 that are close to each other are used to block the abutting convex ring 42. When the abutting convex ring 42 abuts against the nozzle nut 3, the tracheal joint is in the American standard, and when the abutting convex ring 42 abuts against the blocking ring 41, the tracheal joint is in the British or French standard. At the same time, because the second sealing ring 44 tightly abuts against the inner wall of the hollow channel 11, the friction force between the nozzle core 2 and the inner wall of the hollow channel 11 will be increased, so that the nozzle core 2 will not easily slide, and the sealing performance between the nozzle core 2 and the nozzle sleeve 1 can also be improved.

[0049] Referring to Figures 1 to 5 , a serrated convex ring 21 is arranged at the end of the nozzle core 2 extending out of the hollow channel 11, that is, the serrated convex ring 21 is arranged at the end of the nozzle core 2 away from the nozzle nut 3. A trachea 5 is also connected to the nozzle core 2 for connecting to an external device interface. When the trachea 5 is sleeved on the nozzle core 2, the trachea 5 will be sleeved at the serrated convex ring 21 of the nozzle core 2 to achieve an interference fit, so as to improve the stability of the trachea 5 connected to the nozzle core 2. At the same time, in order to further improve the connection tightness between the nozzle core 2 and the trachea 5, a pipe locking sleeve 6 is sleeved on the trachea 5. The inner wall of the pipe locking sleeve 6 and the outer side wall of the trachea 5 are connected by an interference fit, and the pipe locking sleeve 6 is sleeved at the connection between the trachea 5 and the nozzle core 2. Through the extrusion action of the pipe locking sleeve 6 on the trachea 5, the connection between the trachea 5 and the nozzle sleeve 1 is made more tight and stable, and at the same time, the sealing performance between the trachea 5 and the nozzle core 2 can also be improved.

[0050] When the tracheal joint is of the American standard, in order to tightly connect the nozzle core 2 and the nozzle nut 3, a convex block 13 is provided on one side of the outer side wall of the nozzle sleeve 1 away from the nozzle nut 3. The protruding direction of the convex block 13 is towards the direction away from the axis of the nozzle sleeve 1. At the same time, a limiting through groove 14 is provided on one side surface of the convex block 13 away from the nozzle sleeve 1. The length direction of the limiting through groove 14 is along the axis direction of the nozzle sleeve 1. A connecting sleeve 7 is sleeved at intervals on the part of the nozzle core 2 extending out of the hollow channel 11. A connecting ring 71 is provided at the edge of the side of the connecting sleeve 7 away from the nozzle nut 3. The connecting ring 71 is sleeved on the nozzle core 2. The inner wall of the connecting ring 71 is in rotational contact with the outer side wall of the nozzle core 2, and the contact between the connecting ring 71 and the nozzle core 2 is a tight contact. A clamping block 72 is provided on the inner side wall of the connecting sleeve 7. The clamping block 72 is integrally L-shaped, and the inner side of the bend of the clamping block 72 is arranged towards the connecting ring 71. The inner side of the bend of the clamping block 72 is used for placing the convex block 13. A limiting block 73 is provided at the inner side of the bend of the clamping block 72. The shape of the limiting block 73 is adapted to the shape of the limiting through groove 14. The limiting block 73 is used for being clamped in the limiting through groove 14. In this embodiment, two sets of the convex block 13, the limiting through groove 14, the clamping block 72, and the limiting block 73 are provided, and the two sets are symmetrically arranged along the axis of the nozzle core 2. Therefore, when the nozzle nut 3 is in contact with the abutting convex ring 42, the connecting sleeve 7 is rotated so that the convex block 13 is turned into the inner side of the bend of the clamping block 72 until the limiting block 73 is clamped into the limiting through groove 14 on the convex block 13. Through the cooperation of the limiting block 73 and the limiting through groove 14 and the cooperation of the clamping block 72 and the convex block 13, the circumferential and axial restrictions on the connecting sleeve 7 can be realized, which can avoid the phenomenon of the nozzle core 2 sliding.

[0051] Referring to Figures 5 to 7 , since a large amount of heat will be generated during the working process of the tracheal joint, the user will be scalded when contacting the nozzle sleeve 1. Therefore, the nozzle sleeve 1 is made of a plastic material with good heat insulation performance, which plays the role of heat insulation and scald prevention, and can avoid the problem of the user getting burned, so as to improve the comfort performance during use.

[0052] The implementation principle of a portable dual-mode tracheal connector in an embodiment of the present application is as follows: When assembling the tracheal connector, first insert the nozzle core 2 into the hollow channel 11 from the nozzle side. The blocking ring 41 will block the abutting convex ring 42 on the nozzle core 2. Then, detachably install the nozzle nut 3 in the hollow channel 11. The nozzle nut 3 will block the other end of the nozzle core 2. By tightly abutting the second sealing ring 44 against the inner wall of the hollow channel 11, the nozzle core 2 can be stopped at different positions in the hollow channel 11 to form conversions of different modes. In this design method, through the detachably designed nozzle nut 3, the nozzle sleeve 1, the nozzle core 2, and the nozzle nut 3 can be divided into three separate components, and the parts can be replaced separately after being damaged, thereby reducing the usage cost of the tracheal connector. At the same time, during the assembly process, only the nozzle core 2 and the nozzle nut 3 need to be installed in sequence, without the need for pre-installation and other operations. The assembly is simple and the cost is low.

[0053] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A portable dual-standard air pipe connector, comprising a nozzle sleeve provided with a hollow channel and a nozzle core, wherein the nozzle core is slidably arranged in the hollow channel, and one end of the nozzle core is used to pass through one end of the hollow channel, characterized in that: It also includes a nozzle nut and a fixing part. The nozzle nut is detachably installed at the other end of the hollow channel. The outer wall of the nozzle nut is sealed and connected to the inner wall of the hollow channel. The fixing part is arranged in the hollow channel, and the fixing part is used to stop the nozzle core at a predetermined position of the hollow channel.

2. A portable dual-standard air pipe connector according to claim 1, characterized in that: A first annular groove is arranged on one side of the hollow channel close to the nozzle nut, a side wall of the first annular groove is sealingly connected to the nozzle nut, and a groove bottom of the first annular groove abuts against the nozzle nut.

3. A portable dual-standard air pipe connector according to claim 2, characterized in that: The nozzle nut is tightly fitted and abutted against the side wall of the first annular groove.

4. A portable dual-standard air pipe connector according to claim 3, characterized in that: The outer side wall of the nozzle nut is provided with a second annular groove, and a first sealing ring is provided in the second annular groove. The first sealing ring is used to extend from the second annular groove and tightly abut against the inner side wall of the hollow channel.

5. The portable dual-standard air pipe connector according to claim 2, characterized in that: The outer side wall of the nozzle nut is threadedly connected to the inner side wall of the hollow channel.

6. The portable dual-standard air pipe connector according to claim 1, characterized in that: The fixing member includes a blocking ring, an abutting convex ring and a second sealing ring, the blocking ring is arranged on the inner wall of the hollow channel away from the nozzle nut, one end of the nozzle core passes through the inner ring of the blocking ring, the abutting convex ring is arranged on the outer wall of the nozzle core, the abutting convex ring is arranged in the hollow channel, the abutting convex ring is used to abut against the blocking ring, the outer wall of the abutting convex ring is provided with a third ring groove, the second sealing ring is arranged in the third ring groove, and the second sealing ring is used to extend from the third ring groove to abut against the inner side wall of the hollow channel.

7. The portable dual-standard air pipe connector according to claim 1, characterized in that: A serrated convex ring is arranged on the outer side wall of the end of the nozzle core extending out of the hollow passage, and an air pipe is sleeved on the end of the nozzle core extending out of the hollow passage, and the air pipe is sleeved on the portion of the nozzle core located at the serrated convex ring.

8. The portable dual-standard air pipe connector according to claim 7, characterized in that: A locking tube sleeve is sleeved on the air pipe, and the locking tube sleeve is tightly mounted at the connection between the air pipe and the nozzle core.

9. The portable dual-standard air pipe connector according to claim 1, characterized in that: A protrusion is provided on the outer wall of the nozzle sleeve, and a limiting groove is provided on the side of the protrusion away from the nozzle sleeve. A connecting sleeve is provided at an interval on the end of the nozzle core extending out of the hollow channel, and a connecting ring is provided on the inner wall of the connecting sleeve away from the nozzle nut. The inner side wall of the connecting ring is used for rotatably abutting with the nozzle sleeve, and a clamping block is provided inside the side of the connecting sleeve close to the nozzle nut, the clamping block is L-shaped and arranged toward the connecting ring, the inner side of the clamping block is used for placing the protrusion, and a limiting block is provided on the inner side of the clamping block, and the limiting block is used to be clamped into the limiting groove.

10. The portable dual-standard air pipe connector according to claim 1, characterized in that: The mouthpiece cover is made of a plastic material with good scald resistance.

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