Buckle with air guide function and flexible product with multiple cavities

Abstract

The utility model discloses a buckle with an air guide function and a flexible product with multiple cavities. The buckle with the air guide function comprises a first buckle mechanism and a second buckle mechanism which are matched with each other, the second buckle mechanism is sleeved with the first buckle mechanism, the middle portion of the second buckle mechanism is connected with the first buckle mechanism through a buckle structure, and the two end portions of the second buckle mechanism are arranged outside the first buckle mechanism. The second buckle mechanism is internally provided with an air guide channel penetrating through the second buckle mechanism, the air guide channel serves as an air guide channel of the buckle, and the two ends of the second buckle mechanism are provided with air guide ports communicated with the air guide channel. The first buckling mechanism and the second buckling mechanism are fixed in the axial direction and can relatively rotate around the axes of the first buckling mechanism and the second buckling mechanism under driving of external force, and after the first buckling mechanism and the second buckling mechanism rotate by a specified angle, the first buckling mechanism and the second buckling mechanism can be separated from each other in the axial direction.

Description

Technical Field

[0001] This utility model specifically relates to a buckle with air guiding function and a flexible product with multiple cavities, belonging to the field of connection buckle technology. Background Technology

[0002] Clips are widely used as connecting components in many fields. Traditional clips typically only have a simple connecting function, using mechanical structures to fix two parts together. However, with continuous technological development and increasingly diverse application needs, higher requirements are being placed on the performance and functionality of clips. In certain specific application scenarios, such as those requiring gas transmission or pressure balancing, the limitations of traditional clips are becoming increasingly apparent.

[0003] In the field of flexible cavity connections, the requirements for connecting components are often quite high. On the one hand, the connecting components need to have sufficient strength and stability to ensure that the flexible cavity maintains reliable connection under various usage conditions. On the other hand, the connecting components also need to have good flexibility and adaptability, be compatible with the material of the flexible cavity, and not cause damage to the flexible cavity. Summary of the Invention

[0004] The main purpose of this utility model is to provide a buckle with air guiding function and a flexible product with multiple cavities, thereby overcoming the shortcomings of the prior art.

[0005] To achieve the aforementioned objectives, the technical solution adopted by this utility model includes:

[0006] The first aspect of this utility model embodiment provides a buckle with an air guiding function, which includes: a first buckle mechanism and a second buckle mechanism, wherein the first buckle mechanism is sleeved on the outside of the second buckle mechanism;

[0007] The first buckle mechanism has a through-hole inside, which has a first port and a second port. The first port is provided with x guide notches for positioning and guiding around it. The x guide notches surround the first port and are respectively radially connected to the first port. The assembly hole is also provided with x slots. The x slots are spaced apart along the circumference of the assembly hole. Furthermore, the guide notches and the slots are staggered in the circumference of the assembly hole.

[0008] The second snap-fit ​​mechanism has an internal air channel that runs through it. The middle part of the second snap-fit ​​mechanism is located inside the assembly hole, and the two ends are located outside the assembly hole. At least the side of the part extending from the second port is also provided with an air vent that communicates with the air channel. The outside of the middle part has x hooks. The x hooks are arranged at intervals along the circumference of the second snap-fit ​​mechanism. The x hooks are respectively embedded in x slots. The first snap-fit ​​mechanism and the second snap-fit ​​mechanism are fixed to each other in their own axial direction, and x≥2.

[0009] When the first and second locking mechanisms rotate relative to each other around their own axes, the x hooks can disengage from the x slots or be respectively embedded in the x slots; when the x hooks are aligned with the x guide notches one by one, and the first and second locking mechanisms move relative to each other along their own axes, the x hooks can disengage from or enter the assembly hole through the x guide notches.

[0010] A second aspect of this utility model provides a flexible product with multiple cavities, comprising: a first flexible working unit, multiple second flexible working units, and multiple buckles with air guiding function. The first flexible working unit has a first cavity inside, and the second flexible working units have a second cavity inside. The first buckle mechanism is fixed to the first flexible working unit, and the second buckle mechanism is fixed to the second flexible working unit. When the first buckle mechanism and the second buckle mechanism are fixedly combined, the portion of the second buckle mechanism extending from the second port of the first buckle mechanism is located inside the first cavity. The first cavity and the second cavity are connected through an air guiding channel in the second buckle mechanism.

[0011] Compared with the prior art, the advantages of this utility model include:

[0012] This utility model provides a buckle with air guiding function, which combines connection and air guiding functions. It is especially suitable for connecting flexible products with cavities. By setting a hollow support structure, the support structure can contact the flexible product and provide support when it is assembled into the flexible cavity. At the same time, the hollow structure on the side can still have a good air guiding effect when the flexible product contacts the end face of the flexible structure and blocks the air guiding port at the end face, thereby improving the stability of the product.

[0013] This utility model provides a buckle with an air guiding function. The two buckling mechanisms constituting the buckle maintain good structural stability in the axial direction. Before they can be separated in the axial direction, they must first undergo relative rotation, thereby ensuring that they cannot be separated without sufficient external force intervention, thus improving the stability and reliability of use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a first buckling mechanism provided in a typical embodiment of this utility model;

[0016] Figure 2 This is a top view of a first latching mechanism provided in a typical embodiment of this utility model;

[0017] Figure 3 This is a bottom view of a first latching mechanism provided in a typical embodiment of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of a second buckling mechanism provided in a typical embodiment of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of a second buckling mechanism provided in a typical embodiment of this utility model;

[0020] Figure 6 This is a side view of a second buckling mechanism provided in a typical embodiment of this utility model;

[0021] Figure 7 This is a top view of a second latching mechanism provided in a typical embodiment of this utility model. Detailed Implementation

[0022] In view of the shortcomings of the prior art, the inventor of this case, through long-term research and extensive practice, has come up with the technical solution of this utility model. The following will further explain the technical solution, its implementation process, and its principles.

[0023] The first aspect of this utility model embodiment provides a buckle with an air guiding function, which includes: a first buckle mechanism and a second buckle mechanism, wherein the first buckle mechanism is sleeved on the outside of the second buckle mechanism;

[0024] The first buckle mechanism has a through-hole inside, which has a first port and a second port. The first port is provided with x guide notches for positioning and guiding around it. The x guide notches surround the first port and are respectively radially connected to the first port. The assembly hole is also provided with x slots. The x slots are spaced apart along the circumference of the assembly hole. Furthermore, the guide notches and the slots are staggered in the circumference of the assembly hole.

[0025] The second snap-fit ​​mechanism has an internal air channel that runs through it. The middle part of the second snap-fit ​​mechanism is located inside the assembly hole, and the two ends are located outside the assembly hole. At least the side of the part extending from the second port is also provided with an air vent that communicates with the air channel. The outside of the middle part has x hooks. The x hooks are arranged at intervals along the circumference of the second snap-fit ​​mechanism. The x hooks are respectively embedded in x slots. The first snap-fit ​​mechanism and the second snap-fit ​​mechanism are fixed to each other in their own axial direction, and x≥2.

[0026] When the first and second locking mechanisms rotate relative to each other around their own axes, the x hooks can disengage from the x slots or be respectively embedded in the x slots; when the x hooks are aligned with the x guide notches one by one, and the first and second locking mechanisms move relative to each other along their own axes, the x hooks can disengage from or enter the assembly hole through the x guide notches.

[0027] Furthermore, the outermost edges of the x guide notches are located on the first circumference, the outermost edges of the x hooks are located on the second circumference, the outer diameter of the portion of the second latching mechanism extending from the second port is ≤ the outer diameter of the middle portion of the second latching mechanism < the diameter of the first port < the diameter of the second circumference < the diameter of the first circumference ≤ the diameter of the mounting hole, and the diameter of the portion of the second latching mechanism near the first port and located outside the mounting hole is greater than the diameter of the first port.

[0028] In a more specific implementation, the first snap-fit ​​mechanism includes a first assembly cylinder and a stop cover. The assembly hole is coaxially disposed inside the first assembly cylinder, and the stop cover is fixedly disposed at one end of the second assembly cylinder. The first port, the x guide notches, and the x slots are all disposed on the stop cover, and the x slots are located on the inner side of the stop cover facing the assembly hole.

[0029] Furthermore, the inner side of the stop cover is provided with x first protrusion structures and x second protrusion structures. The x first protrusion structures and x second protrusion structures are alternately arranged at intervals along the circumference of the stop cover. The x first protrusion structures and x second protrusion structures are configured as x limiting structures. The x limiting structures and x guide notches are alternately arranged at intervals. Each limiting structure includes one first protrusion structure and one second protrusion structure disposed on both sides of a slot. The height of the second protrusion is greater than the height of the first protrusion. The buckle with air guiding function is configured to be able to enter and exit the slot only from one side of the first protrusion structure.

[0030] Furthermore, the first protrusion structure has a first guide surface and a second guide surface arranged sequentially along the circumference of the stop cover. The second guide surface faces the slot located between the first protrusion structure and the second protrusion structure and is connected to one side wall of the slot. Both the first guide surface and the second guide surface are inclined. The first guide surface and the second guide surface are connected and set at an angle. The inclination angle of the second guide surface is greater than the inclination angle of the first guide surface.

[0031] Furthermore, the guide notch is located at the end of the first guide surface.

[0032] Furthermore, the first snap-fit ​​mechanism also includes a first base, and the second base is located at one end of the first assembly cylinder near the second port. The first base is arranged around the first assembly cylinder and is fixedly connected to the first assembly cylinder.

[0033] In a more specific implementation, the second snap-fit ​​mechanism includes a second assembly cylinder and a support structure arranged sequentially along its own axis. The air guide channel continuously passes through the second assembly cylinder and the support structure. The x hooks are fixedly arranged on the circumferential side of the second assembly cylinder. A part of the second assembly cylinder is disposed in the assembly hole. The support structure extends out from the second port. The air guide port is provided on the circumferential side of the support structure. The outer diameter of the support structure is less than the outer diameter of the second assembly cylinder and less than the diameter of the first port.

[0034] Furthermore, the circumferential side surface of the support structure and the end face opposite to the second assembly cylinder are both hollow structures, and the hollow structure serves as the air guide port.

[0035] Furthermore, the support structure is a frame structure, which includes a support ring and x connecting ribs. The x connecting ribs are spaced apart circumferentially along the second buckling mechanism. One end of each connecting rib is fixedly connected to the second assembly cylinder, and the other end is fixedly connected to the support ring. The air duct is formed between adjacent connecting ribs and between the inner ring of the support ring.

[0036] Furthermore, x hooks are located at the connection interface between the second assembly cylinder and the support structure.

[0037] Furthermore, in the circumferential direction of the second latching mechanism, the positions of x latches and x connecting ribs correspond one-to-one.

[0038] Furthermore, the second snap-fit ​​mechanism also includes a second base, which is fixedly connected to the second assembly cylinder. The second base is located at one end of the second assembly cylinder opposite to the support structure. The second base is arranged around the second assembly cylinder. The diameter of the second base is larger than the diameter of the first port. When the second assembly cylinder is located inside the assembly hole of the second snap-fit ​​mechanism, the first snap-fit ​​mechanism abuts against the second base.

[0039] A second aspect of this utility model provides a flexible product with multiple cavities, comprising: a first flexible working unit, multiple second flexible working units, and multiple buckles with air guiding function. The first flexible working unit has a first cavity inside, and the second flexible working units have a second cavity inside. The first buckle mechanism is fixed to the first flexible working unit, and the second buckle mechanism is fixed to the second flexible working unit. When the first buckle mechanism and the second buckle mechanism are fixedly combined, the portion of the second buckle mechanism extending from the second port of the first buckle mechanism is located inside the first cavity. The first cavity and the second cavity are connected through an air guiding channel in the second buckle mechanism.

[0040] Specifically, the flexible product with multiple cavities can be a mask, etc. The first flexible working unit can be the mask body, and the second flexible working unit can be an external filter element, etc.

[0041] The following will further explain the technical solution, its implementation process and principle in conjunction with the accompanying drawings and specific implementation examples. Unless otherwise specified, the specific dimensions and shapes of the components of the first and second buckling mechanisms in the embodiments of this utility model can be adjusted according to specific needs. The materials of the first and second buckling mechanisms can also be selected according to specific needs. The first and second buckling mechanisms can be manufactured using conventional custom processes known in the art, and no specific limitations are made here.

[0042] In a typical implementation, a snap fastener with a gas-guiding function includes a first snap fastener mechanism and a second snap fastener mechanism that match each other. The first snap fastener mechanism is sleeved on the outside of the second snap fastener mechanism. The middle part of the second snap fastener mechanism is connected to the first snap fastener mechanism through a snap fastening structure, and the two ends are located outside the first snap fastener mechanism. The interior of the second snap fastener mechanism has a gas-guiding channel that runs through it. This gas-guiding channel serves as the gas-guiding channel for the snap fastener. The two ends of the second snap fastener mechanism have gas-guiding ports that communicate with the gas-guiding channel. When the second snap fastener mechanism and the first snap fastener mechanism are connected through the snap fastening structure, the first snap fastener mechanism and the second snap fastener mechanism are fixed in the axial direction, but can rotate relative to each other around their own axis under the drive of an external force. After rotating through a specified angle, the first snap fastener mechanism and the second snap fastener mechanism can separate from each other in the axial direction.

[0043] For example, both the first and second locking mechanisms can be plastic components.

[0044] For details, please refer to Figure 1 , Figure 2 and Figure 3 The first latching mechanism includes a coaxially arranged annular first base 110, a first assembly cylinder 120, and an annular stop cover 130. The first base 110 and the stop cover 130 are respectively fixedly disposed at both ends of the first assembly cylinder 120. The first assembly cylinder 120 and the stop cover 130 together form an assembly hole. The first port 131 of the assembly hole is disposed on the stop cover 130, and the second port is disposed on the end face of the end of the first assembly cylinder 120 that is fixedly connected to the first base 110. The stop cover 130 is also provided with x guide notches 132 and x slots 133. The x guide notches 132 surround the first port 131 and are respectively radially directly connected to the first port 131. The x slots 133 are disposed on the inner side of the stop cover 130 facing the assembly hole. The x slots 133 are spaced apart circumferentially along the assembly hole, and the guide notches 132 and slots 133 are staggered in the circumferential direction of the assembly hole. For details, please refer to [link to relevant documentation]. Figure 4 , Figure 5 , Figure 6 and Figure 7The second latching mechanism includes a second base 210, a second assembly cylinder 220, and a support structure 230 coaxially arranged. The second base 210 and the support structure 230 are respectively fixed at both ends of the second assembly cylinder 220. The air guide channel 201 continuously passes through the second assembly cylinder 220 and the support structure 230. x hooks 221 are fixedly arranged on the circumferential side of the second assembly cylinder 220. The second assembly cylinder 220 is arranged in the assembly hole. The x hooks 221 are respectively embedded in x slots 133. The support structure 230 extends out from the second port of the assembly hole. The circumferential side and the end face of the support structure 230 facing away from the second assembly cylinder 220 are provided with air guide ports 202. The stop cover 130 is in clearance fit or direct contact with the second base 210. x≥2, x=3 in the figure.

[0045] Specifically, the first base 110, the second base 210, and the stop cover 130 are all circular structures, while the first assembly cylinder 120, the second assembly cylinder 220, and the support structure 230 are all cylindrical structures. The guide notches 132, hooks 221, and slots 133 have the same outline shape, and their outline shapes are all rectangular or fan-shaped. The outermost edges of the x guide notches 132 are located on the first circumference, and the outermost edges of the x hooks 221 are located on the first circumference. On the second circumference, the outer diameter of the support structure 230 is less than the outer diameter of the second assembly cylinder 220, which is less than the diameter of the first port 131, which is less than the diameter of the second circumference, which is less than the diameter of the assembly hole, which is less than the outer diameter of the second base 210. The axial lengths of the first assembly cylinder 120 and the second assembly cylinder 220 are equal. More specifically, the axial length of the second assembly cylinder 220 is the same as the axial length of the assembly hole. When the first snap-fit ​​mechanism and the second snap-fit ​​mechanism are engaged, the second assembly cylinder 220 is completely located inside the assembly hole.

[0046] Specifically, when the first and second locking mechanisms rotate relative to each other around their own axes, the x hooks 221 can disengage from the x slots 133, or respectively embed into the x slots 133; when the x hooks 221 are aligned with the x guide notches 132, and the first and second locking mechanisms move relative to each other along their own axes, the x hooks 221 can disengage from or enter the assembly hole through the x guide notches 132 respectively. More specifically, when the x hooks 221 of the first locking mechanism are aligned one by one with the x guide notches 132 of the second locking mechanism, and the first and second locking mechanisms move relative to each other along their own axes, the x hooks 221 can enter the assembly hole or disengage from the assembly hole through the x guide notches 132 respectively. When the x hooks 221 are located inside the assembly hole and the first and second locking mechanisms rotate relative to each other around their own axes, the x hooks 221 can be respectively inserted into the x slots 133 or disengaged from the x slots 133. When the x hooks 221 are respectively inserted into the x slots 133, the first and second locking mechanisms are fixed in the axial direction.

[0047] Specifically, the first base 110 can be fixed radially to the outside of the first assembly cylinder 120, that is, the first base 110 is arranged around the first assembly cylinder 120, and the end faces of the first base 110 and the first assembly cylinder 120 are flush. The stop cover 130 is fixed radially to the inside of the first assembly cylinder 120, or the stop cover 130 is fixed to the end face of the first assembly cylinder 120. The first base 110, the first assembly cylinder 120 and the stop cover 130 can be fixed in a manner known in the art. Of course, the first base 110, the first assembly cylinder 120 and the stop cover 130 can also be integral.

[0048] Specifically, in order to ensure the stability of the connection between the first and second latching mechanisms, while not hindering the release of the connection between the first and second latching mechanisms, x first protrusions 134 and x second protrusions 135 are provided on the inner side of the stop cover 130. The x first protrusions 134 and x second protrusions 135 are alternately arranged along the circumference of the stop cover 130. The x first protrusions 134 and x second protrusions 135 are configured as x limiting structures. The x limiting structures and x guide notches 132 are alternately arranged. Each limiting structure includes one first protrusion 134 and one second protrusion 135, which are located on both sides of a slot 133. The height of the second protrusion is greater than the height of the first protrusion. The latch with air guiding function is configured to be able to enter and exit the slot 133 only from one side of the first protrusion 134.

[0049] Understandably, when x hooks 221 enter the assembly hole axially through x guide notches 132, the second latching mechanism and the first latching mechanism can only rotate relative to each other in the first direction and cross the first protrusion structure 134 to enter the slot 133. The hooks 221 cannot directly cross the second protrusion structure 135 to enter the slot 133. Correspondingly, the second latching mechanism and the first latching mechanism can only rotate relative to each other in the second direction and cross the first protrusion structure 134 to disengage from the slot 133. That is, the circumferential movement of the hooks 221 in the assembly hole is hindered by the second protrusion structure 135.

[0050] Specifically, to better facilitate the insertion of the hook 221 into the mounting hole into the slot 133, the first protrusion structure 134 has a first guide surface and a second guide surface arranged sequentially along the circumference of the stop cover 130. The second guide surface faces the slot 133 located between the first protrusion structure 134 and the second protrusion structure 135, and connects to one side wall of the slot 133. Both the first and second guide surfaces are inclined, connected at an angle, with the inclination angle of the second guide surface being greater than that of the first guide surface, and the length of the second guide surface being less than that of the first guide surface. Therefore, the force required to drive the hook 221 into the slot 133 is less than the force required to disengage the hook 221 from the slot 133. More specifically, the guide notch 132 is located at the end of the first guide surface away from the second guide surface, and the slot 133 is located at the end of the second guide surface away from the first guide surface. By making the first and second guide surfaces inclined, the hook 221 can enter and exit the slot 133.

[0051] Specifically, the circumferential side surface of the support structure 230 and the end face facing away from the second assembly cylinder 220 are both hollow structures, which serve as air inlets 202. More specifically, the support structure 230 is a frame structure, including a support ring 231 and x connecting ribs 232. The x connecting ribs 232 are spaced apart circumferentially along the second snap-fit ​​mechanism. One end of each connecting rib 232 is fixedly connected to the second assembly cylinder 220, and the other end is fixedly connected to the support ring 231. Air inlets 202 are formed between adjacent connecting ribs 232 and between the inner rings of the support ring 231. More specifically, in the circumferential direction of the second assembly cylinder 220, the positions of x hooks 221 and x connecting ribs 232 correspond one-to-one. Through this design, the buckle can adapt to the connection and conduction of flexible products, and can prevent the flexible products from sticking to the port of the air guide channel 201 and blocking the air guide channel 201. The support structure 230 is completely located outside the assembly hole, which can support the flexible working body connected to it and prevent the flexible working body from sticking.

[0052] Specifically, the outer periphery of both the first base 110 and the second base 210 has a toothed structure. This design increases the friction between the base and the fixed body, thereby improving the stability of the fixed connection.

[0053] This utility model provides a buckle with air guiding function, which combines connection and air guiding functions. It is especially suitable for connecting flexible products with cavities. By setting a hollow support structure, the support structure can contact the flexible product and provide support when it is assembled into the flexible cavity. At the same time, the hollow structure on the side can still have a good air guiding effect when the flexible product contacts the end face of the flexible structure and blocks the air guiding port at the end face, thereby improving the stability of the product.

[0054] This utility model provides a buckle with an air guiding function. The two buckling mechanisms constituting the buckle maintain good structural stability in the axial direction. Before they can be separated in the axial direction, they must first undergo relative rotation, thereby ensuring that they cannot be separated without sufficient external force intervention, thus improving the stability and reliability of use.

[0055] It should be understood that the above embodiments are merely illustrative of the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A buckle with an air-guiding function, characterized in that, include: A first latching mechanism and a second latching mechanism, wherein the first latching mechanism is sleeved on the outside of the second latching mechanism; The first buckle mechanism has a through-hole inside, which has a first port and a second port. The first port is provided with x guide notches for positioning and guiding around it. The x guide notches surround the first port and are respectively radially connected to the first port. The assembly hole is also provided with x slots. The x slots are spaced apart along the circumference of the assembly hole. Furthermore, the guide notches and the slots are staggered in the circumference of the assembly hole. The second snap-fit ​​mechanism has an internal air channel that runs through it. The middle part of the second snap-fit ​​mechanism is located inside the assembly hole, and the two ends are located outside the assembly hole. At least the side of the part extending from the second port is also provided with an air vent that communicates with the air channel. The outside of the middle part has x hooks. The x hooks are arranged at intervals along the circumference of the second snap-fit ​​mechanism. The x hooks are respectively embedded in x slots. The first snap-fit ​​mechanism and the second snap-fit ​​mechanism are fixed to each other in their own axial direction, and x≥2. When the first and second locking mechanisms rotate relative to each other around their own axes, the x hooks can disengage from the x slots or be respectively embedded in the x slots; when the x hooks are aligned with the x guide notches one by one, and the first and second locking mechanisms move relative to each other along their own axes, the x hooks can disengage from or enter the assembly hole through the x guide notches.

2. The buckle with air guiding function according to claim 1, characterized in that: The outermost edges of the x guide notches are located on the first circumference, and the outermost edges of the x hooks are located on the second circumference. The outer diameter of the portion of the second latching mechanism extending from the second port is ≤ the outer diameter of the middle portion of the second latching mechanism < the diameter of the first port < the diameter of the second circumference < the diameter of the first circumference ≤ the diameter of the mounting hole. The diameter of the portion of the second latching mechanism near the first port and located outside the mounting hole is greater than the diameter of the first port.

3. The buckle with air guiding function according to claim 2, characterized in that: The first snap-fit ​​mechanism includes a first assembly cylinder and a stop cover. The assembly hole is coaxially disposed inside the first assembly cylinder. The stop cover is fixedly disposed at one end of the first assembly cylinder. The first port, the x guide notches, and the x slots are all disposed on the stop cover. The x slots are located on the inner side of the stop cover facing the assembly hole.

4. The buckle with air guiding function according to claim 3, characterized in that: The inner side of the stop cover is also provided with x first protrusion structures and x second protrusion structures. The x first protrusion structures and x second protrusion structures are alternately arranged at intervals along the circumference of the stop cover. The x first protrusion structures and x second protrusion structures are configured as x restricting structures. The x restricting structures and x guide notches are alternately arranged at intervals. Each restricting structure includes one first protrusion structure and one second protrusion structure arranged on both sides of a slot. The height of the second protrusion is greater than the height of the first protrusion. The buckle with air guiding function is configured to be able to enter and exit the slot only from one side of the first protrusion structure.

5. The buckle with air guiding function according to claim 4, characterized in that: The first protrusion structure has a first guide surface and a second guide surface arranged sequentially along the circumference of the stop cover. The second guide surface faces the slot located between the first protrusion structure and the second protrusion structure and is connected to one side wall of the slot. Both the first guide surface and the second guide surface are inclined. The first guide surface and the second guide surface are connected and set at an angle. The inclination angle of the second guide surface is greater than the inclination angle of the first guide surface.

6. The snap fastener with air guiding function according to claim 5, characterized in that: The guide notch is located at the end of the first guide surface.

7. The snap fastener with air guiding function according to claim 3, characterized in that: The first snap-fit ​​mechanism further includes a first base, which is located at one end of the first assembly cylinder near the second port. The first base is arranged around the first assembly cylinder and is fixedly connected to the first assembly cylinder.

8. The snap fastener with air guiding function according to claim 1 or 3, characterized in that: The second snap-fit ​​mechanism includes a second assembly cylinder and a support structure arranged sequentially along its own axis. The air guide channel continuously passes through the second assembly cylinder and the support structure. The x hooks are fixedly arranged on the circumferential side of the second assembly cylinder. A part of the second assembly cylinder is arranged in the assembly hole. The support structure extends out from the second port. The air guide port is provided on the circumferential side of the support structure. The outer diameter of the support structure is less than the outer diameter of the second assembly cylinder and less than the diameter of the first port.

9. The buckle with air guiding function according to claim 8, characterized in that: The circumferential side surface of the support structure and the end face opposite to the second assembly cylinder are both hollow structures, and the hollow structure serves as the air guide port.

10. The snap fastener with air guiding function according to claim 9, characterized in that: The support structure is a frame structure, which includes a support ring and x connecting ribs. The x connecting ribs are arranged at intervals along the circumference of the second buckling mechanism. One end of each connecting rib is fixedly connected to the second assembly cylinder, and the other end is fixedly connected to the support ring. The air duct is formed between adjacent connecting ribs and between the inner ring of the support ring.

11. The snap fastener with air guiding function according to claim 10, characterized in that: x hooks are located at the connection interface between the second assembly cylinder and the support structure.

12. The snap fastener with air guiding function according to claim 10, characterized in that: In the circumferential direction of the second buckle mechanism, the positions of x hooks and x connecting ribs correspond one-to-one.

13. The snap fastener with air guiding function according to claim 8, characterized in that: The second snap-fit ​​mechanism further includes a second base, which is fixedly connected to the second assembly cylinder. The second base is located at one end of the second assembly cylinder opposite to the support structure. The second base is arranged around the second assembly cylinder. The diameter of the second base is larger than the diameter of the first port. When the second assembly cylinder is located inside the assembly hole of the second snap-fit ​​mechanism, the first snap-fit ​​mechanism abuts against the second base.

14. A flexible product with multiple cavities, characterized in that, include: The system comprises a first flexible working unit, multiple second flexible working units, and multiple latches with air guiding function as described in any one of claims 1-13. The first flexible working unit has a first cavity inside, and the second flexible working unit has a second cavity inside. The first latch mechanism is fixed to the first flexible working unit, and the second latch mechanism is fixed to the second flexible working unit. When the first latch mechanism and the second latch mechanism are fixedly combined, the portion of the second latch mechanism extending from the second port of the first latch mechanism is located inside the first cavity. The first cavity and the second cavity are connected through an air guiding channel within the second latch mechanism.

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