Combined anti-seismic and anti-falling buffer inflatable bag

Abstract

The utility model relates to the technical field of packaging, in particular to a combined type anti-shock and anti-falling buffering inflatable bag which comprises an inflatable bag body, an inflation valve, a connecting device and a reinforcing device. The inflation bag is arranged in an inflation expansion mode, the inflation valve is installed on the surface of the inflation bag, the top of the inflation valve is connected with the top cover, and the connecting devices are arranged on the two sides of the inflation bag. The reinforcing device is arranged on the inflation valve and comprises a reinforcing ring, a gland and a limiting piece, the reinforcing ring is fixedly arranged on the inflation valve, one end of the gland is hinged to one end of the reinforcing ring, the gland and the top cover are arranged in a penetrating and screwing mode through the limiting piece to be connected in a fastened mode, and the limiting piece is fixedly arranged on the top cover. And after the limiting piece is unscrewed and pulled away, the gland and the top cover are separated, so that gas leakage is effectively prevented, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and mainly to a combined shockproof and drop-proof cushioning inflatable bag. Background Technology

[0002] Inflatable bags, also known as inflatable packaging bags, are widely used in the transportation and handling of large items such as electronic products, ceramic products, precision instruments, watches, auto parts, and pianos, as well as fragile items such as glass, vases, and porcelain. In truck, shipping container, and rail transport, inflatable bags fill gaps between goods, support the weight of goods caused by swaying, absorb vibrations, effectively prevent goods from shifting, and protect goods from damage during transport. However, the inflation valve is a key component of the inflatable bag, used to control the inflation and deflation of gas; its performance directly affects the bag's effectiveness and safety. For example, a one-way check valve effectively prevents gas leakage after inflation, and a specially designed inflation valve can also protect the bag from damage during inflation and reduce the possibility of injury to operators.

[0003] However, some traditional inflatable bag inflation valves may have design flaws, such as insufficient tightness between the valve body and valve cover, leading to loosening and air leakage. Some inflation valves also suffer from structural design deficiencies that leave them vulnerable to deformation, breakage, and other damage when subjected to external impacts. Furthermore, some inflation valves require sophisticated manufacturing processes, resulting in higher costs, and their sealing and robustness cannot be guaranteed even after prolonged use.

[0004] Therefore, in order to solve the problem of the inflation valve and improve the reliability and service life of the air bag, there is an urgent need for a cushioned air bag that can enhance the structural strength of the inflation valve, improve its impact resistance and wear resistance, and reduce damage and leakage caused by various factors. Utility Model Content

[0005] To address the above issues, a combined shockproof and drop-proof inflatable bag with good overall stability, impact resistance, and wear resistance was developed. The designed reinforcement device enables the inflatable bag to better perform its function and prevents the top cover from loosening under strong pressure and impact, which could lead to air leakage or deformation and damage to the inflation valve.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A modular shock-absorbing and drop-proof cushioning inflatable bag, comprising:

[0008] Inflatable bags, inflation valves, connecting devices, and reinforcement devices;

[0009] The air bag is designed for inflation, the inflation valve is installed on the surface of the air bag, a top cover is connected to the top of the inflation valve, and the connecting device is located on both sides of the air bag;

[0010] The reinforcement device is installed on the inflation valve. The reinforcement device includes a reinforcement ring, a pressure cap, and a limiting member. The reinforcement ring is fixedly installed on the inflation valve. One end of the pressure cap is hinged to one end of the reinforcement ring. The pressure cap and the top cover are fastened together by the limiting member and screwed on. When the limiting member is loosened and removed, the pressure cap and the top cover are separated.

[0011] A first connecting rod is provided on one side of the reinforcing ring with a protrusion, and a first hole ring is provided at the end of the first connecting rod.

[0012] The pressure cap is L-shaped, and a fixing rod is fixedly installed at one end of the pressure cap. The first hole ring passes through the fixing rod. Two sets of circular holes are also symmetrically arranged at the corner of the pressure cap, and the circular holes are provided with threaded grooves.

[0013] The limiting member is cylindrical and has threads that mate with the threaded groove. One end of the limiting member extends symmetrically to both sides as a rod.

[0014] The bottom of the top cover is provided with a rubber pad, and the top of the top cover is stepped, which is matched with the cover body of the pressure cap.

[0015] One side of the top cover is also provided with a fixing strap that is fixedly connected to the inflation valve, and the other side of the top cover is provided with a second connecting rod that protrudes and extends, and the end of the second connecting rod is provided with a second hole ring, which is located between the two sets of the circular holes.

[0016] The other end of the pressure cap has a protruding ring buckle, and a detachable connecting strap is provided inside the ring buckle. Both ends of the connecting strap are provided with hooks, and the connecting strap is connected to the ring buckle by hooking one end of the hook.

[0017] The inflation valve is also equipped with an inflation / deflation valve device, which includes a valve port, an air supply module, screws, a spring component, a closing stop block, and a spring top cover.

[0018] The ventilation module is fitted onto the closing block, which extends upward from its center. A spring top cover is fixedly connected to the top of the closing block by screws, and a spring is connected to the bottom of the spring top cover. The closing block blocks the inflation valve, and squeezing the spring top cover opens the inflation valve.

[0019] The inflatable bag includes an inner bag and an outer bag that are nested inside each other. The inner bag is a sealed transparent bag structure, and the outer bag is a woven bag structure.

[0020] The connecting device is installed on both sides of the middle part of the outer bag. The connecting device includes a male connecting strap and a female connecting strap. The male connecting strap is located on one side of the outer bag, and the female connecting strap is located on the other side of the outer bag.

[0021] The male connector has a male buckle at one end, which is shaped like a mountain. The female connector has a female buckle at one end, which has a groove. The male buckle matches the groove and can be elastically inserted into the groove for engagement.

[0022] The beneficial effects of this utility model are as follows:

[0023] (1) The reinforcement device provided in this utility model can increase the strength and stability of the inflation valve, enabling it to withstand greater external forces. After multiple inflations, ordinary inflation valves are prone to deformation and wear due to gas pressure. Therefore, the reinforcement device can enhance the structural strength of the inflation valve, enabling it to withstand greater pressure, reducing the risk of damage caused by frequent use or accidental collisions, thereby extending the service life of the inflation bag.

[0024] (2) In the utility model, the pressure cap in the reinforcement device presses against the structure of the top cover, which better fixes the tight connection between the inflation valve and the top cover, effectively prevents gas from leaking from the connection, ensures the sealing performance of the air bag, and maintains stable internal air pressure. Especially in application scenarios where it is necessary to maintain the inflation state for a long time, it can avoid frequent air replenishment due to air leakage, improve the convenience and reliability of use. At the same time, the reinforcement device at the top cover can protect the sealing structure from damage by external factors. Whether it is the bumps and collisions during transportation or the friction and squeezing during use, the reinforcement device can play a buffering and protective role, so that the sealing performance of the top cover is not affected and the integrity of the air bag is maintained.

[0025] (3) The design of the reinforcement device in this utility model is also convenient for employees to operate, and it is convenient to operate the inflation valve during inflation and deflation. Users can easily pinch the limiting part, the pressure cap and the top cover to increase the contact area, making it easier to connect or separate the pressure cap and the top cover, making it easier to accurately control the inflation and deflation process, and making it convenient for users to quickly complete the inflation and deflation.

[0026] (4) The reinforced device designed in this utility model effectively improves safety. The reinforced top cover can withstand higher internal pressure and will not suddenly pop out during inflation, thereby avoiding injury to people around it and playing an important safety protection role.

[0027] (5) The present invention is also provided with a detachable connection device, which can flexibly adjust the use of the inflatable bag according to different usage needs. It can be spliced ​​or reduced according to the actual situation to adapt to various complex transportation scenarios, achieve more precise fixing and buffer protection, and improve the versatility and adaptability of the inflatable bag.

[0028] (6) In this utility model, the unused cushioning air bags are stacked together by a detachable connecting device and then connected to each other by wrapping them around the male and female connecting straps of the connecting device. This makes them easy to store and carry, saves space, and improves convenience. In particular, for larger air bags, this operation makes it easier to store the air bags without taking up space.

[0029] In summary, the combined shockproof and drop-proof cushioning inflatable bag of this utility model is more durable and more effectively protects the product. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the front structure of this utility model;

[0032] Figure 3 This is a schematic cross-sectional view of the present invention.

[0033] Figure 4 This is a schematic diagram of the pressure cap of this utility model;

[0034] Figure 5 This is a schematic diagram of the reinforcing ring structure of this utility model;

[0035] Figure 6 This is a schematic diagram of the top cover structure of this utility model;

[0036] Figure 7 This is a schematic diagram of the limiting component structure of this utility model;

[0037] Figure 8 This is a schematic diagram of the connecting strip structure of this utility model;

[0038] Figure 9 This is a schematic diagram of the female connector structure of this utility model;

[0039] Figure 10 This is a schematic diagram of the male connector structure of this utility model;

[0040] Figure 11 This is a schematic cross-sectional view of the inflation valve of this utility model;

[0041] Figure 12 This is a schematic diagram of the internal structure of the inflation valve of this utility model;

[0042] Figure 13 This is a schematic diagram of the ventilation module structure of this utility model.

[0043] In the diagram: 1. Inflatable bag, 12. Inner bag, 13. Outer bag, 2. Inflation valve, 21. Top cover, 22. Inflation / deflation valve device, 221. Valve port, 222. Ventilation module, 223. Screw, 224. Spring component, 225. Closing stop, 226. Spring top cover, 210. Fixing strap, 3. Connecting device, 31. Male strap, 311. Male buckle, 32. Female strap, 321. Female buckle, 4. Reinforcing device, 41. Reinforcing ring, 411. First connecting rod, 412. First hole ring, 42. Pressure cap, 420. Cover body, 421. Fixing rod, 422. Round hole, 4221. Threaded groove, 43. Limiting component, 430. Thread, 431. Rod part, 423. Ring buckle, 424. Connecting strap, 425. Hook. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] In the description of this utility model, 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", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] Example 1:

[0048] like Figures 1 to 13 As shown, a combined shock-absorbing and drop-proof cushioning inflatable bag includes:

[0049] 1. Inflatable bag; 2. Inflatable valve; 3. Connecting device; and 4. Reinforcing device.

[0050] The air bag 1 is designed for inflation, the inflation valve 2 is installed on the surface of the air bag 1, the top of the inflation valve 2 is connected to a top cover 21, and the connecting device 3 is located on both sides of the air bag 1.

[0051] The reinforcing device 4 is installed on the inflation valve 2. The reinforcing device 4 includes a reinforcing ring 41, a pressure cap 42, and a limiting member 43. The reinforcing ring 41 is fixedly installed on the inflation valve 2. The inner diameter of the reinforcing ring 41 is adapted to the outer diameter of the inflation valve 2. One end of the pressure cap 42 is hinged to one end of the reinforcing ring 41. The pressure cap 42 and the top cover 21 are fastened together by the limiting member 43 and screwed on. When the limiting member 43 is loosened and removed, the pressure cap 42 is separated from the top cover 21.

[0052] The reinforcing ring 41 has a first connecting rod 411 extending from one side, and a first hole ring 412 is provided at the end of the first connecting rod 411. The reinforcing ring 41 is made of a high-strength aluminum alloy material, which has good corrosion resistance and mechanical strength.

[0053] The pressure cap 42 is L-shaped, and a fixing rod 421 is fixedly installed at one end of the pressure cap 42. The first hole ring 412 passes through the fixing rod 421, thereby realizing the hinge connection between the reinforcing ring 41 and the pressure cap 42, so that the pressure cap 42 can rotate flexibly around the hinge point. While ensuring that the connection between the reinforcing ring 41 and the pressure cap 42 is stable, it does not affect the normal operating space of the inflation valve 2. Two sets of circular holes 422 are also symmetrically arranged at the corner position of the pressure cap 42, and a threaded groove 4221 is provided in the circular hole 422.

[0054] The limiting member 43 is cylindrical and has threads 430 that mate with the threaded groove 4221. The threads 430 on the limiting member 43 are tightly fitted to the threaded groove 4221 on the circular hole 422, ensuring reliable connection and smooth and secure engagement with the threaded groove 4221 in the circular hole 422. One end of the limiting member 43 extends symmetrically to both sides with a rod 431. The design of the rod 431 facilitates manual screwing of the limiting member 43 by the operator, improving operational convenience.

[0055] The bottom of the top cover 21 is provided with a rubber pad. The rubber pad is made of aging-resistant and highly elastic rubber material, which effectively enhances the sealing between the top cover 21 and the inflation valve 2 and prevents air leakage. The top of the top cover 21 is set in a stepped manner. This stepped position is set to cooperate with the cover body 420 of the pressure cover 42. When the pressure cover 42 rotates through the hinge point with the reinforcing ring 41 to fit against the stepped position on the top of the top cover 21, the stepped design on the top cover 21 increases the contact area between the cover body 420 and the top cover 21, making the fastening effect better. It can also play a positioning role during assembly, making it convenient, quick and accurate to install.

[0056] One side of the top cover 21 is also provided with a fixing strap 210 that is fixedly connected to the inflation valve 2. The other side of the top cover 21 is provided with a second connecting rod 211 that protrudes and extends. The end of the second connecting rod 211 is provided with a second hole ring 212. The second hole ring 212 is located between the two sets of circular holes 422. When the pressure cap 42 and the top cover 21 are fitted together, the second hole ring 212 is coaxially arranged between the two sets of circular holes 422. This allows the limiting member 43 to pass through the second hole ring 212 and the circular holes 422 at the same time. Then, it is connected to the limiting member 43 by the threaded groove 4221 in the circular hole 422 and the threaded thread 430 on the limiting member 43. The second connecting rod 211 and the top cover 21 are integrally formed to ensure the strength of the structure.

[0057] The other end of the pressure cap 42 is provided with a ring buckle 423. The ring buckle 423 is also provided with a detachable connecting strap 424. Both ends of the connecting strap 424 are provided with hooks 425. The connecting strap 424 is connected to the ring buckle 423 by hooking the hook 425 at one end.

[0058] It should be noted that the connecting strap 424 is made of a material with wear-resistant and tensile-resistant properties, and can be stretched according to length requirements. The surface of the hook 425 is galvanized to prevent rust. The connecting strap 424 is hooked into the ring buckle 423 by the hook 425 at one end, and hooked onto the container by the hook 425 at the other end to further enhance the connection stability. Its hook design has been optimized to ensure stable hooking.

[0059] The inflation valve 2 is also provided with an inflation / deflation valve device 22, which includes a valve port 221, an air supply module 222, a screw 223, a spring element 224, a closing block 225, and a spring top cover 226.

[0060] The ventilation module 222 is sleeved on the closing block 225. The closing block 225 extends upward from the center. A spring top cover 226 is fixedly connected to the top of the closing block 225 by screws 223. A spring element 224 is connected to the bottom of the spring top cover 226. The closing block 225 blocks the inflation valve 2. By squeezing the spring top cover 226, the inflation valve 2 is opened.

[0061] It should be noted that the specific structure of the inflation / deflation valve device 22 is as follows: When the air bag 1 needs to be inflated, the external inflation device is aligned with the valve port 221, and then the spring top cover 226 is squeezed. The spring element 224 is compressed, causing the closing block 225 to move inward, opening the valve port 221. Gas enters the air bag 1 through the ventilation module 222. After inflation is completed, the spring top cover 226 is released, and the spring element 224 pushes the closing block 225 outward through elastic rebound, resealing the valve port 221 to prevent gas leakage. When deflation is required, the spring top cover 226 is pressurized in the same way to open the valve port 221, and the gas is discharged from the air bag 1.

[0062] The inflatable bag 1 includes an inner bag 12 and an outer bag 13 nested together. The inner bag 12 is a sealed transparent bag structure with good flexibility and sealing performance, which can effectively prevent gas leakage. The outer bag 13 is a woven bag structure made of high-strength nylon, which is wear-resistant and pressure-resistant, and can protect the inner bag 12. The surface of the outer bag 13 is also waterproofed to prevent the inner bag 12 from getting damp in a humid environment. The inner bag 12 is tightly fitted inside the outer bag 13, and the two are connected by small fixing points to prevent the inner bag 12 from shaking inside the outer bag 13.

[0063] The connecting device 3 is installed on both sides of the middle part of the outer bag 13. The connecting device 3 includes a male connecting strap 31 and a female connecting strap 32. Both the male connecting strap 31 and the female connecting strap 32 are made of materials with wear-resistant and tensile-resistant properties. The male connecting strap 31 is located on one side of the outer bag 13, and the female connecting strap 32 is located on the other side of the outer bag 13.

[0064] The male connector 31 is provided with a male buckle 311 at one end, which is arranged in a mountain shape. The female connector 32 is provided with a female buckle 321 at one end, which is provided with a groove 322. The male buckle 311 is matched with the groove 322, and the male buckle 311 can be elastically inserted into the groove 322 and engaged.

[0065] It should be noted that the male buckle 311 is made of plastic with a smooth surface to facilitate insertion into the groove 322 of the female buckle 321. The two sides of the male buckle 311 have an elastic structure. When inserted into the groove 322, the two sides will contract inward and then unfold within the groove 322 to achieve engagement. The female buckle 321 is also made of plastic, and the groove 322 inside it matches the shape and size of the male buckle 311. The inner wall of the groove 322 is provided with small protrusions. When the male buckle 311 is inserted, these protrusions can increase the friction, making the engagement between the male buckle 311 and the groove 322 more secure.

[0066] Therefore, when multiple air bags 1 need to be connected, align the male buckle 311 on one side of the outer bag 13 of one air bag 1 with the groove 322 of the female buckle 321 on the other side of the outer bag 13 of another air bag 1, and then forcefully insert the male buckle 311 into the groove 322 to lock it in place. When it is necessary to separate the air bags 1, press the elastic structure on both sides of the male buckle 311 to retract it inward, thereby releasing it from the groove 322.

[0067] The specific operating procedures for the inflation valve 2 and the reinforcement device 4, depending on the circumstances, are as follows:

[0068] When it is necessary to open the inflation valve 2 for inflation, first, grasp and rotate the limiting member 43 through the rod 431 to loosen and remove the limiting member 43, thereby separating the pressure cap 42 from the top cover 21. Since the pressure cap 42 is hinged to the reinforcing ring 41, the operator can easily rotate the pressure cap 42 to one side, fully exposing the top cover 21 for convenient operation. Then, open the top cover 21 and insert the external inflation device into the inflation valve 2 for inflation. After inflation is complete, remove the external inflation device and... The top cover 21 is placed on top, and then the cover body 420 of the pressure cap 42 is rotated onto the top cover 21 and pressed together. The limiting member 43 is inserted into the round hole 422 and the second hole ring 212 and tightened to securely connect the top cover 21 and the pressure cap 42, so that the pressure cap 42 is pressed tightly onto the top cover 21. This prevents the top cover 21 from loosening due to excessive gas pressure inside the air bag 1, thereby reinforcing the inflation valve 2 and providing effective physical protection for the inflation valve 2.

[0069] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A combination shock absorbing and fall protection air cushion bag, characterized in that, The utility model relates to an inflatable bag (1), inflation valve (2), connecting device (3) and reinforcing device (4) are included. The inflatable bag (1) is set up with inflation, the inflation valve (2) is installed on the surface of the inflatable bag (1), the inflation valve (2) top is connected with top cover (21) setting, the connecting device (3) is set up in the both sides of the inflatable bag (1); The reinforcing device (4) is installed on the inflation valve (2), the reinforcing device (4) includes reinforcing ring (41), gland (42) and stopper (43), the reinforcing ring (41) is fixedly installed on the inflation valve (2), one end of the gland (42) is hingedly arranged with one end of the reinforcing ring (41), the gland (42) and the top cover (21) are fastened and connected by the stopper (43) through the penetration, when the stopper (43) is loosened and separated, the gland (42) and the top cover (21) are separated.

2. The combined anti-seismic and anti-falling cushion inflatable bag according to claim 1, wherein: one side of the reinforcing ring (41) is provided with a first connecting rod (411) protruding and extending, and the first connecting rod (411) is provided with a first hole ring (412) at the end.

3. The combined anti-seismic and anti-falling cushion inflatable bag according to claim 2, wherein: the gland (42) is provided in an L shape, one end of the gland (42) is fixedly provided with a fixed rod (421), the first hole ring (412) penetrates the fixed rod (421), and two groups of circular holes (422) are symmetrically provided at the corner position of the gland (42), and a screw groove (4221) is arranged in the circular hole (422).

4. The combined anti-seismic and anti-falling cushion inflatable bag according to claim 3, wherein: the stopper (43) is provided in a cylindrical shape, the stopper (43) is provided with a screw thread (430), the screw thread (430) is arranged in cooperation with the screw groove (4221), and a rod portion (431) is symmetrically protruding and extending at one end of the stopper (43).

5. The combined anti-seismic and anti-falling cushion inflatable bag according to claim 3, wherein: the top cover (21) is provided with a rubber pad at the bottom, the top cover (21) is provided in a stepped shape at the top, and the stepped position of the top cover (21) is arranged in cooperation with the cover body (420) of the gland (42).

6. The combined anti-seismic and anti-falling cushion inflatable bag according to claim 3, wherein: one side of the top cover (21) is further provided with a fixing belt (210) fixedly connected with the inflation valve (2), the other side of the top cover (21) is provided with a second connecting rod (211) protruding and extending, the second connecting rod (211) is provided with a second hole ring (212) at the end, and the second hole ring (212) is located between the two groups of circular holes (422).

7. The combined anti-seismic and anti-falling cushion inflatable bag according to claim 3, wherein: ​ ​ ​ ​ ​ ​ The other end of the gland (42) is provided with a ring buckle (423), and a detachable connecting band (424) is arranged in the ring buckle (423), and hooks (425) are arranged at both ends of the connecting band (424).

8. The combined anti-vibration and anti-falling cushion air bag according to claim 1, characterized in that: The inflating valve (2) is internally provided with a charging and discharging valve device (22), and the charging and discharging valve device (22) comprises a valve port (221), an air passage module (222), a screw (223), a spring member (224), a closing block (225) and a spring top cover (226); The air passage module (222) is sleeved on the closing block (225), the closing block (225) is upwardly and centrally protrudingly arranged, the closing block (225) is fixedly connected with the spring top cover (226) at the top through the screw (223), the spring top cover (226) is connected with the spring member (224) at the bottom, and the closing block (225) blocks the inflating valve (2), extrudes the spring top cover (226) and opens the inflating valve (2).

9. The combined anti-vibration and anti-falling cushion air bag according to claim 1, characterized in that: The air bag (1) comprises an inner bag (12) and an outer bag (13) which are sleeved with each other, the inner bag (12) is a sealed transparent bag structure, and the outer bag (13) is a woven bag structure.

10. The combined anti-vibration and anti-falling cushion air bag according to claim 9, characterized in that: The connecting device (3) is arranged at the middle of the outer bag (13) on both sides, the connecting device (3) comprises a male connecting band (31) and a female connecting band (32), the male connecting band (31) is arranged on one side of the outer bag (13), and the female connecting band (32) is arranged on the other side of the outer bag (13); One end of the male connecting band (31) is provided with a male buckle (311), the male buckle (311) is arranged in a mountain shape, one end of the female connecting band (32) is provided with a female buckle (321), the female buckle (321) is internally provided with a groove (322), the male buckle (311) and the groove (322) are matched, and the male buckle (311) can be elastically inserted into the groove (322) and engaged.

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