Air column welding structure and inflatable tent framework

Abstract

The utility model discloses an air column welding structure and an inflatable tent framework, the air column welding structure comprises a plurality of pipe bodies, the plurality of pipe bodies are butted together to form a multi-way pipe joint, a first welding area for hermetically connecting the adjacent pipe bodies is arranged at the butted part of the adjacent pipe bodies, a first reinforcing sheet is welded on the first welding area, and a second reinforcing sheet is welded on the second welding area. Center holes are formed in the top center and the bottom center of the multi-way pipe joint, and sealing pieces and second reinforcing pieces are welded to the inner sides and the outer sides of the peripheries of the center holes correspondingly. The utility model has the advantages that the manufacturing process can be optimized, the production efficiency is improved, the product quality is ensured, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to air -filled product technical field especially, it relates to a gas column welding structure and air -filled tent framework. BACKGROUND

[0002] Traditional air -filled tent manufacturing process has many challenges in actual production. First, due to the complex structure of air -filled tent, especially the connecting node part of gas pipe, usually need skilled technician to complete through manual operation. This manual operation not only puts forward higher requirement to the experience and technical level of worker, also leads to low production efficiency. In large -scale production, this manual mode is difficult to guarantee the consistency and standardization of product, thereby limiting the popularization and application of automatic production line.

[0003] Secondly, the traditional process is prone to quality problems in the manufacturing process. For example, the welding or bonding part of gas pipe node due to the insufficient process control precision, can lead to the connection not firm, and further cause the air leakage problem. In addition, in the overall forming process of tent, due to the uneven tension distribution of material or the limitation of splicing process, the finished product often appears structural distortion, deformation and other problems. This not only significantly reduces the appearance and practicability of product, also can affect its durability and safety performance.

[0004] Therefore, it is necessary to further improve and perfect the prior art to overcome these deficiencies, and the utility model is made based on this situation. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at overcoming the deficiencies of prior art, and provides a gas column welding structure and air -filled tent framework that can optimize manufacturing process, improve production efficiency, guarantee product quality and reduce production cost.

[0006] The utility model can be realized through the following technical schemes:

[0007] To solve the above technical problem, the utility model provides a gas column welding structure, including multiple pipe bodies, multiple pipe bodies are butted together to form a multi -way pipe joint, the butt joint of adjacent pipe bodies is equipped with the first welding area of sealing connection two, the first welding area is welded with the first reinforcing sheet, the top center and the bottom center of the multi -way pipe joint are equipped with center hole, and the inner and outer sides of the periphery of the center hole are respectively welded with sealing sheet and second reinforcing sheet.

[0008] To further solve the technical problem that the utility model wants to solve, the utility model provides a gas column welding structure, the pipe body includes pipe sheet and is rolled from pipe sheet, and the second welding area of sealing connection two is equipped on the two long side edges of pipe sheet.

[0009] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of gas column welding structure, the butt joint end of the pipe piece is punched with two parallel arc connecting ports, and the first welding area is formed by welding the periphery of the connecting port of adjacent pipe body together.

[0010] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of gas column welding structure, the two corners and the middle part of the butt joint end of the pipe piece are punched with arc notches, and the notches of each pipe body are connected together to form the center hole.

[0011] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of gas column welding structure, the size of the sealing sheet is greater than the size of the second reinforcing sheet, the size of the second reinforcing sheet is greater than the size of the center hole, and a third welding area is provided between the sealing sheet, the second reinforcing sheet and the periphery of the center hole.

[0012] The utility model can also be realized by the following technical solutions:

[0013] To solve the above technical problems, the utility model provides an inflatable tent framework, which comprises a plurality of top gas columns, the upper ends of the top gas columns are connected together by the above-mentioned gas column welding structure, the lower ends of the top gas columns are connected with support gas columns, and the lower ends of the support gas columns are provided with support foot sealing structures.

[0014] In order to further solve the technical problems to be solved by the utility model, the utility model provides an inflatable tent framework, wherein the support foot sealing structure comprises an outward turning edge provided at the lower end of the support gas column, a sealing sheet and a bottom sealing sheet are sequentially provided below the outward turning edge, the periphery of the outward turning edge, the sealing sheet and the periphery of the bottom sealing sheet are welded together to form a fourth welding area.

[0015] In order to further solve the technical problems to be solved by the utility model, the utility model provides an inflatable tent framework, wherein a hard plate is clamped between the middle part of the bottom sealing sheet and the middle part of the sealing sheet, and a fifth welding area is provided around the hard plate between the bottom sealing sheet and the sealing sheet.

[0016] In order to further solve the technical problems to be solved by the utility model, the utility model provides an inflatable tent framework, wherein an inner pulling sheet is welded to the middle part of the bottom sealing sheet, the sixth welding area is provided in the welding area, the outer ring of the inner pulling sheet is pulled upward and welded to the inner side wall of the support gas column, and the seventh welding area is provided in the welding area.

[0017] In order to further solve the technical problems to be solved by the utility model, a kind of inflatable tent framework provided by the utility model, hard plate is clamped between the middle part of bottom sealing sheet and the middle part of sealing sheet, inner pull sheet is further provided above the middle part of sealing sheet, eighth welding area that encloses hard plate is provided between the middle part of inner pull sheet, the middle part of sealing sheet and the middle part of bottom sealing sheet, and the outer ring of inner pull sheet is pulled up and welded with the inner side wall of support air column, and the welding area is ninth welding area.

[0018] In order to further solve the technical problems to be solved by the utility model, a kind of inflatable tent framework provided by the utility model, support foot sealing structure includes inner turn-up edge arranged at the lower end of support air column, bottom sealing sheet and sealing sheet are sequentially arranged above the inner turn-up edge, and the periphery of inner turn-up edge, bottom sealing sheet and sealing sheet is welded together, forming tenth welding area.

[0019] Compared with prior art, the utility model has the following advantages:

[0020] 1, the air column welding structure of the utility model is designed with a central hole, and the sealing sheet is welded on the inner side of the central hole, and the reinforcing sheet is welded on the outer side, forming a third welding area, which realizes high-strength sealing connection. This design effectively disperses local stress, avoids tearing and falling due to load concentration, significantly improves the sealing performance and structural strength of the joint. At the same time, this optimized structure simplifies the manufacturing process, improves the production efficiency, reduces the risk of gas leakage, and enhances the reliability and service life of the product.

[0021] 2, the welding method steps of the utility model are simple and easy to operate, which avoids the complex positioning and adjustment problem in traditional welding technology. In addition, the method adopts folding and multi-layer stacking mode, which significantly improves the efficiency of punching and welding. The welding process of the utility model has low requirement on processing precision, which can significantly reduce production cost, and realizes material saving through reasonable structure design and material use. The formed air column welding structure has excellent sealing performance and strength, which can effectively avoid gas leakage problem and improve the reliability and service life of the product.

[0022] 3, the utility model provides various sealing structure designs for inflatable tent support feet, which can adapt to different application scenarios and strength requirements. These designs not only improve the compression resistance and durability of the bottom of support air column, but also effectively solve the problem of structural deformation or tearing caused by air pressure fluctuation, providing more reliable protection for the use of inflatable tent. BRIEF DESCRIPTION OF DRAWINGS

[0023] The specific embodiments of the utility model will be further described in detail below in combination with the drawings, in which:

[0024] Figure 1 is a schematic view of a three-dimensional structure of a gas column welding structure;

[0025] Figure 2 is an expanded view of a tube body (tube sheet);

[0026] Figure 3 is a schematic view of a plurality of tube sheets in a stacked relationship;

[0027] Figure 4 is a schematic view of a forming process of a gas column welding structure;

[0028] Figure 5 is a schematic view of a structure at a central hole;

[0029] Figure 6 is a schematic view of a three-dimensional structure of a gas column welding structure;

[0030] Figure 7 is an embodiment one of a support leg sealing structure;

[0031] Figure 8 is an embodiment two of a support leg sealing structure;

[0032] Figure 9 is an embodiment three of a support leg sealing structure;

[0033] Figure 10 is an embodiment four of a support leg sealing structure;

[0034] Figure 11 is an embodiment five of a support leg sealing structure. DETAILED DESCRIPTION

[0035] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0036] As shown in Figures 1 to 5 The utility model discloses an improved gas column welding structure for solving the problems of easy air leakage, insufficient node strength, complex processing and the like in the traditional gas column welding structure.

[0037] The structure comprises a plurality of tube bodies 1, and the plurality of tube bodies 1 are butted together at one end to form a multi-way pipe joint, which is used to constitute a supporting gas column of an inflatable product such as an inflatable tent.

[0038] In order to ensure the sealing performance and the welding strength, a first welding area 11 is arranged at the butt joint of the adjacent tube bodies 1 to seal and connect both. In order to further improve the mechanical strength and durability of the welding part, a first reinforcing sheet 2 is welded on the first welding area 11, so that the tensile strength and the torsional performance of the joint area are effectively enhanced.

[0039] More importantly, in order to solve the problem of easy tearing and gas leakage caused by the structural weakness of the top center and bottom center of the conventional multi-way pipe joint, the utility model discloses a center hole 1a arranged at the top center and bottom center of the multi-way pipe joint through innovative design. The design of the center hole 1a not only simplifies the distribution of the airflow and the connecting structure, but also enhances the sealing performance and mechanical strength of the part through an optimized welding process.

[0040] Specifically, the periphery of the center hole 1a is welded with a sealing sheet 3 on the inner side and a second reinforcing sheet 4 on the outer side. The combination structure of the double-sided welding firmly seals the periphery of the center hole 1a through the inner and outer clamping mode. The size of the sealing sheet 3 is designed to be larger than that of the second reinforcing sheet 4, and the size of the second reinforcing sheet 4 is larger than that of the center hole 1a. The distribution of the size gradient ensures that the welding area has higher stress dispersion capacity, avoiding the tearing or failure of the welding point due to excessive local load.

[0041] In addition, the periphery of the center hole 1a, the sealing sheet 3 and the second reinforcing sheet 4 are sealed and connected through a third welding area 15. This sealed connection firmly fuses the inner and outer materials, effectively disperses the stress concentration after welding, and further reduces the risk of cracking or falling off of the welding area caused by long-term use or external environmental changes (such as pressure fluctuation, mechanical impact, etc.).

[0042] The design of the double-sided welding not only effectively improves the sealing performance of the center hole 1a, but also significantly enhances the structural strength of the entire multi-way pipe joint. Compared with the traditional single-sided welding or non-reinforced structure design, the structure of the utility model greatly reduces the risk of gas leakage caused by insufficient process precision during the manufacturing process, and simplifies the manufacturing process through a reasonable welding process, making the overall process more efficient. At the same time, the quality of the finished product after welding is more stable, with excellent fatigue resistance and long-term sealing capacity, thereby meeting the actual needs of high sealing performance and high reliability for air column products such as inflatable tents.

[0043] Further, each pipe body 1 is rolled from a pipe sheet 1b, and the two long sides of the pipe sheet 1b are welded together through a second welding area 12 to form a sealed tubular structure. This design simplifies the pre-processing process of the material and improves the production efficiency.

[0044] The pipe sheet 1b is formed with two parallel arc-shaped connecting ports 13 at the end through stamping before welding, which are used for butt welding of adjacent pipe bodies 1. In addition, the butt end of the pipe sheet 1b is also stamped with arc-shaped notches 14 at the corners and the middle part (between the two parallel connecting ports 13), and the notches 14 of each pipe sheet 1b after welding form a center hole 1a that penetrates through the entire multi-way pipe joint. The center hole 1a position is cut to facilitate the subsequent welding of the sealing sheet 3 and the second reinforcing sheet 4, thereby strengthening the sealing performance and structural strength of the top center and bottom center of the multi-way pipe joint.

[0045] In order to further improve the strength of the welding area, the size of the sealing sheet 3 is larger than that of the second reinforcing sheet 4, and the size of the second reinforcing sheet 4 is larger than the diameter of the center hole 1a. The size gradient design further improves the sealing performance and pressure resistance of the periphery of the center hole 1a, and reduces the use of materials.

[0046] In terms of material selection, the pipe body 1, the first reinforcing sheet 2 and the second reinforcing sheet 4 generally use sandwich coated materials, the innermost layer and the outermost layer of which are coated, and are generally made of PVC (polyvinyl chloride), TPU (thermoplastic polyurethane) or other polymer materials. The coating can be conveniently welded by hot melt connection. The middle layer is provided with a cloth layer or a net layer (such as a fiber net or a woven net) to improve the tensile strength and enhance the durability and stability of the pipe body. The sealing sheet 3 generally uses soft PVC, TPU or other soft film materials that can be stretched. The selection of these materials ensures that the sealing sheet 3 can maintain good sealing state under various working conditions.

[0047] Manufacturing method

[0048] In order to realize the above structure, the utility model provides a kind of welding method for making gas column welding structure, comprising the following specific steps:

[0049] Step S1: punching preparation

[0050] Take pipe sheet 1b, and form arc-shaped connecting port 13 and arc-shaped notch 14 at the end of one end by stamping. The connecting port 13 is arranged in parallel along the end of the butt joint end of the pipe sheet 1b, and is used for subsequent welding of adjacent pipe sheets. The notch 14 is arranged between the two corners of the end of the pipe sheet 1b and the two connecting ports 13 respectively, to form the center hole 1a of the multi-pass pipe joint.

[0051] Step S2: folding pipe sheet

[0052] Fold along the length direction of the pipe sheet 1b, so that the connecting port 13 and the notch 14 form a pre-alignment state. This process can be completed before punching (step S1), and the order of the two is interchangeable without affecting the process effect.

[0053] Step S3: stacking alignment

[0054] Stack the folded pipe sheet 1b in sequence, and adjust to make all the connecting ports 13 and notches 14 of the pipe sheets completely aligned. This step ensures the precision and uniformity of the subsequent welding process.

[0055] Step S4: first welding area welding

[0056] Adjacent pipe sheets 1b are welded (hot pressure welding or ultrasonic welding, etc.) along the periphery of the corresponding connecting port 13 to form the first welding area 11. After welding, the adjacent pipe sheets are connected to form a whole.

[0057] As shown in Figure 3 , four pipe pieces 1b are butted together, the edges of B and C should be aligned and welded together, the edges of D and E should be aligned and welded together, the edges of F and G should be aligned and welded together, and the edges of H and A should be aligned and welded together.

[0058] Step S5: First reinforcement piece installation

[0059] After the pipe pieces 1b are welded, a plurality of first reinforcement pieces 2 are taken and welded on the corresponding first welding areas 11. This process effectively enhances the strength and durability of the pipe body at the butted joint.

[0060] Step S6: Forming of pipe body and central hole

[0061] The two long sides of each pipe piece 1b are welded along the second welding areas 12 to form a sealed pipe body 1. After all the welding is completed, the notches 14 of the pipe pieces are butted together to form the central hole 1a of the multi-way pipe joint.

[0062] Step S7: Sealing and reinforcing of central hole

[0063] A sealing piece 3 and a second reinforcement piece 4 are taken, as shown in Figure 5 , the sealing piece 3 is placed on the inner side of the central hole 1a, the second reinforcement piece 4 is placed on the outer side of the central hole 1a, and the three are welded together at the third welding area 15. After the welding is completed, the sealing performance and mechanical strength of the central hole 1a are guaranteed.

[0064] The welding method of the utility model has simple steps and strong operability, and avoids the complex positioning and adjustment problems in traditional welding technology. In addition, the method uses the folding and multi-layer stacking method, which significantly improves the efficiency of punching and welding. The welding process of the utility model has low requirements for processing precision, can significantly reduce production cost, and realizes material saving through reasonable structure design and material use. The formed gas column welding structure has excellent sealing performance and strength, can effectively avoid the air leakage problem, and improves the reliability and service life of the product.

[0065] As shown in Figure 6 , the utility model also discloses a kind of inflatable tent framework, comprising a plurality of top gas column 5, the upper end of each of the top gas column 5 is connected together by the gas column welding structure described above, the lower end of the top gas column 5 is connected with support gas column 6, and the lower end of the support gas column 6 is provided with support foot sealing structure.

[0066] The following are several embodiments of support foot sealing structure:

[0067] As shown in Figure 7The image shows an embodiment of the support foot sealing structure. The support foot sealing structure includes an outer flange 61 located at the lower end of the support air column 6. A sealing sheet 7 and a bottom sealing sheet 8 are sequentially arranged below the outer flange 61. The outer flange 61, the periphery of the sealing sheet 7, and the periphery of the bottom sealing sheet 8 are welded together to form a fourth welding area 81.

[0068] The supporting air column 6 and the sealing plate 8 are preferably made of a mesh-coated material, with both the innermost and outermost layers being coatings. The sealing plate 7 is preferably made of PVC (polyvinyl chloride), TPU (thermoplastic polyurethane), or other polymer materials. The supporting air column 6, the sealing plate 7, and the sealing plate 8 are welded together to form a sealed structure, with the sealing plate 7 serving to increase the welding strength.

[0069] like Figure 8 The following is a second embodiment of the support foot sealing structure. The difference from the first embodiment is that a rigid plate 9 is sandwiched between the middle of the bottom sealing plate 8 and the middle of the sealing plate 7, and a fifth welding area 82 surrounding the rigid plate 9 is provided between the bottom sealing plate 8 and the sealing plate 7.

[0070] This embodiment is an improvement on Embodiment 1, by adding a rigid plate 9 between the bottom sealing plate 8 and the sealing plate 7. The rigid plate 9 is placed between the sealing plate 7 and the bottom sealing plate 8 and welded around it. The supporting air column 6 tube body, the sealing plate 7, and the bottom sealing plate 8 are welded together to form a sealed structure.

[0071] The rigid plate 9 is typically made of rigid plastic, metal, or wood, and a fifth weld zone 82 is formed around it by welding. Its function is:

[0072] - Provides additional structural support to limit deformation at the bottom caused by air pressure expansion.

[0073] - Prevents the back cover sheet 8 from tearing under high pressure conditions.

[0074] The addition of rigid plate 9 not only improves the overall rigidity of the bottom structure, but also significantly enhances the compressive strength, making the support feet more stable and durable.

[0075] like Figure 9 The illustration shows a third embodiment of the support foot sealing structure. The difference from the first embodiment is that this embodiment further adds an inner pull tab 10 as a reinforcing structure. The inner pull tab 10 is welded to the center of the bottom sealing plate 8, and the welding area is the sixth welding area 83. The outer ring of the inner pull tab 10 is pulled upwards and welded to the inner wall of the supporting air column 6, and the welding area is the seventh welding area 101.

[0076] The inner pull plate 10 is preferably made of a mesh-coated material, with both its innermost and outermost layers being coated. The inner pull plate 10, sealing plate 7, and bottom sealing plate 8 are welded together, and then the inner pull plate 10 is welded to the inner wall of the supporting air column 6 tube. Finally, the supporting air column 6 tube, sealing plate 7, and bottom sealing plate 8 are welded together to form a sealed structure.

[0077] The functions of the inner pull tab 10 are: 1) The inner pull tab 10 generates a reaction force by pulling the bottom structure inward, limiting the excessive expansion of the bottom sealing sheet 8 during inflation. 2) It prevents bottom tearing due to excessive pressure, further improving sealing performance and durability. 3) The inner pull tab 10 also uses a mesh-coated material, which, after being welded to the supporting air column 6 tube, forms a complete high-sealing structure.

[0078] like Figure 10 The illustration shows a fourth embodiment of the support foot sealing structure. The difference from the third embodiment is that the fourth embodiment combines the advantages of the second and third embodiments, placing the rigid plate 9 between the inner pull piece 10 and the sealing sheet 7. The rigid plate 9 is sandwiched between the middle of the bottom sealing sheet 8 and the middle of the sealing sheet 7. An inner pull piece 10 is also provided above the middle of the sealing sheet 7. An eighth welding area 84 surrounding the rigid plate 9 is provided between the middle of the inner pull piece 10, the middle of the sealing sheet 7, and the middle of the bottom sealing sheet 8. The outer ring of the inner pull piece 10 is pulled upwards and welded to the inner wall of the supporting air column 6, and the welding area is the ninth welding area 102.

[0079] The rigid plate 9 is placed between the inner pull tab 10, the sealing plate 7, and the bottom sealing plate 8, and welded together. The supporting air column 6, the sealing plate 7, and the bottom sealing plate 8 are welded together to form a sealed structure. The rigid plate 9 controls the expansion deformation at the bottom caused by air pressure, preventing the bottom sealing plate 8 from tearing under high pressure. The inner pull tab 10 further strengthens the tensile force distribution at the bottom. The multi-welded layout significantly improves the overall structure's resistance to pressure and tearing, ensuring stability under high pressure conditions.

[0080] like Figure 11 The illustration shows a fifth embodiment of the support foot sealing structure. The difference from the first embodiment is that the fifth embodiment uses an inner flange 62 design. The support foot sealing structure includes an inner flange 62 located at the lower end of the support air column 6. A bottom sealing plate 8 and a sealing plate 7 are sequentially arranged above the inner flange 62. The inner flange 62, the periphery of the bottom sealing plate 8, and the periphery of the sealing plate 7 are welded together to form a tenth welding area 85.

[0081] Among them, the sealing sheet 7 is in the innermost layer, the sealing bottom sheet 8 is in the middle, the inner turning edge 62 of the supporting air column 6 tube body is in the outermost layer, the supporting air column 6 tube body end is folded inward to form the inner turning edge 62 naturally, the sealing sheet 7+the sealing bottom sheet 8+the inner turning edge 62 are welded to form a sealing structure, and the tearing resistance and the sealing strength of the bottom are greatly enhanced after the three are welded.

[0082] Through the above multiple embodiments, the utility model provides multiple sealing structure designs for the supporting feet of the inflatable tent, which can adapt to different application scenarios and strength requirements. These designs not only improve the compression resistance and durability of the supporting air column bottom, but also effectively solve the structural deformation or tearing problem caused by air pressure fluctuation, providing more reliable protection for the use of the inflatable tent.

Claims

1. A gas column weld structure, characterized by: The utility model relates to a multi -way pipe joint, which comprises a plurality of pipe bodies (1) that are butted together to form a multi -way pipe joint, a first welding area (11) that seals and connects two adjacent pipe bodies (1) at the butt joint, a central hole (1a) at the top center and bottom center of the multi -way pipe joint, a sealing sheet (7) (3) and a second reinforcing sheet (4) welded on the inner and outer sides of the periphery of the central hole (1a) respectively.

2. A gas column weld structure according to claim 1, wherein: The first welding area (11) is welded with a first reinforcing sheet (2).

3. A gas column weld structure according to claim 1, wherein: The pipe body (1) comprises a pipe sheet (1b) and is rolled from the pipe sheet (1b), and the two long sides of the pipe sheet (1b) are provided with a second welding area (12) that seals and connects two.

4. A gas column weld structure according to claim 3, wherein: The butt joint end of the pipe sheet (1b) is provided with two parallel arc-shaped connecting openings (13), and the first welding area (11) is formed by welding the periphery of the connecting openings (13) of the adjacent pipe bodies (1) together.

5. A gas column weld structure according to claim 4, wherein: The two corners and the middle part of the butt joint end of the pipe sheet (1b) are provided with arc-shaped notches (14), and the corresponding notches (14) of each pipe body (1) are butted together to form the central hole (1a).

6. A gas column weld structure according to claim 1, wherein: The size of the sealing sheet (7) (3) is larger than that of the second reinforcing sheet (4), the size of the second reinforcing sheet (4) is larger than that of the central hole (1a), and a third welding area (15) is arranged between the peripheries of the sealing sheet (7) (3), the second reinforcing sheet (4) and the central hole (1a).

7. An inflatable tent pole frame, characterized by: The utility model relates to a multi -way pipe joint, which comprises a plurality of pipe bodies (1) that are butted together to form a multi -way pipe joint, a first welding area (11) that seals and connects two adjacent pipe bodies (1) at the butt joint, a central hole (1a) at the top center and bottom center of the multi -way pipe joint, a sealing sheet (7) (3) and a second reinforcing sheet (4) welded on the inner and outer sides of the periphery of the central hole (1a) respectively.

8. An inflatable tent framework according to claim 7, wherein: The support foot sealing structure comprises an outward turning edge (61) arranged at the lower end of the support column (6), a sealing sheet (7) and a bottom sealing sheet (8) arranged in sequence below the outward turning edge (61), and the peripheries of the outward turning edge (61), the sealing sheet (7) and the bottom sealing sheet (8) are welded together to form a fourth welding area (81).

9. An inflatable tent framework according to claim 8, wherein: A hard plate (9) is clamped between the middle part of the bottom sealing sheet (8) and the middle part of the sealing sheet (7), and a fifth welding area (82) is arranged between the bottom sealing sheet (8) and the sealing sheet (7) to surround the hard plate (9).

10. An inflatable tent framework according to claim 8, wherein: An inner pulling sheet (10) is welded to the middle part of the bottom sealing sheet (8), and the welding area is a sixth welding area (83), the outer ring of the inner pulling sheet (10) is pulled upward and welded to the inner side wall of the support column (6), and the welding area is a seventh welding area (101).

11. An inflatable tent framework according to claim 8, wherein: A hard plate (9) is clamped between the middle part of the bottom sealing sheet (8) and the middle part of the sealing sheet (7), and an inner pulling sheet (10) is further arranged above the middle part of the sealing sheet (7), an eighth welding area (84) is arranged between the middle part of the inner pulling sheet (10), the middle part of the sealing sheet (7) and the middle part of the bottom sealing sheet (8) to surround the hard plate (9), and the outer ring of the inner pulling sheet (10) is pulled upward and welded to the inner side wall of the support column (6), and the welding area is a ninth welding area (102).

12. An inflatable tent structure according to claim 7, wherein: The support leg sealing structure comprises an inward flanging (62) arranged at the lower end of the support air column (6), a sealing bottom sheet (8) and a sealing sheet (7) arranged above the inward flanging (62) in sequence, and the periphery of the inward flanging (62), the sealing bottom sheet (8) and the sealing sheet (7) are welded together to form a tenth welding area (85).

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