A modular adjustable inflatable sofa

Abstract

This utility model relates to the field of inflatable furniture manufacturing technology, and discloses a modular adjustable inflatable sofa, including an airbag assembly, a sponge cushion assembly, and a zippered modular sofa cover. The airbag assembly consists of multiple airbags, each with an internal support structure, including tension wires or reinforcing ribs. The zippered modular sofa cover is a continuous, integral fabric with at least five independent chambers, each with a zipper opening, sewn together on its inner side. Each chamber is used to individually house the corresponding area of ​​the airbag. This utility model, through the structural cooperation of the independent airbags and the zippered modular sofa cover, breaks down the traditional one-piece air chamber into at least five independently operable airbags, and pre-sets corresponding zippered chambers within the sofa cover. During replacement and maintenance, it is not necessary to disassemble the entire sofa, significantly reducing maintenance costs and time. The diverse support structures achieve ergonomic adjustability.

Description

Technical Field

[0001] This utility model belongs to the field of inflatable furniture manufacturing technology, specifically to a modular adjustable inflatable sofa. Background Technology

[0002] Most existing inflatable sofas are designed as a single air chamber, which increases in size after inflation, making it difficult to fit the one-piece sofa cover. When a part is damaged, the whole sofa needs to be replaced, and subsequent cleaning also requires disassembling the entire set. Therefore, installation and maintenance are complicated and inconvenient.

[0003] Furthermore, in terms of seating comfort and durability, the pure inflatable structure has a "bouncy" feel and lacks conformity. Localized stress concentration can easily lead to problems such as fraying, fabric wear, and short service life. In terms of shape stability, the parts are prone to shifting after inflation, making it difficult to maintain the regular shape of the sofa, which affects the user experience and aesthetics. In addition, the double-seater models are mostly designed as a whole, making it difficult to meet the needs of both independent use and overall coherence.

[0004] Therefore, there is a need for an inflatable sofa technology that is modularly assembled, ergonomically designed for comfortable seating, easy to maintain, and structurally stable, while also being suitable for single and double use. Utility Model Content

[0005] To address the problems of cumbersome installation, inconvenient maintenance, stiff seating, and unstable shape in existing technologies, this utility model provides a modular adjustable inflatable sofa.

[0006] The technical solution adopted by this utility model is as follows: A modular adjustable inflatable sofa includes an airbag assembly, a sponge cushion assembly, and a zippered modular sofa cover; the airbag assembly consists of multiple independent airbags that can be inflated and deflated individually, and the airbags have a support structure inside, including a rib or a reinforcing bar; the zippered modular sofa cover is a continuous integral fabric, with at least five independent chambers, each with a zipper opening, formed by sewing on its inner side, corresponding to the left armrest, right armrest, seat cushion, backrest, and headrest areas respectively. Each chamber is used to individually accommodate the airbag in the corresponding area after the airbag is deflated, and the chamber walls limit the airbag after inflation; the seat cushion area has an upper and lower partition layer sewn integrally with the main fabric of the sofa cover; the sponge cushion assembly includes an upper sponge pad and a lower sponge pad, the upper sponge pad is placed in the upper partition layer to bear the pressure of the human body to enhance the sitting comfort and fit, and the lower sponge pad is placed in the lower partition layer to prevent airbag wear and extend the service life of the airbags.

[0007] Furthermore, the support structure consists of longitudinally arranged wires of equal or unequal length, which are high-frequency fused to the upper and lower inner walls of the airbag to form an elastic longitudinal support array. This array is used to maintain the stability of the airbag shape and disperse surface pressure after the airbag is inflated. When the wires are arranged of equal length in the airbag, a planar airbag is formed. When the wires are arranged of unequal length with gradually changing length in the airbag, that is, when the length increases or decreases sequentially along a certain direction of the airbag, an inclined airbag is formed.

[0008] Furthermore, the supporting structure is a tension rod, with both ends of the tension rod being high-frequency fused to the upper and lower inner walls of the airbag. After inflation, the tension rod and the airbag tension work together to provide support and maintain shape stability.

[0009] Furthermore, when the airbag in the seat area is an inclined airbag, the upper sponge pad is flat, and its outer contour is consistent with the inclined airbag, so as the inclined airbag tilts, it presents an inclined sitting feeling; or the upper sponge pad is inclined, and its tilt angle is complementary to the inclined airbag, so that after the two inclined surfaces are put together, the upper surface returns to an approximately horizontal position, providing a flat sitting feeling.

[0010] Furthermore, when the filaments cover the entire area inside the airbag, forming full-cavity filaments; or when they only cover a local area inside the airbag, and the filaments in that local area are not arranged with gradually varying lengths, but rather in a preset pattern, forming non-full-cavity filaments.

[0011] Furthermore, when the airbag in the seat area is a flat airbag, the upper sponge pad is flat and overlaps with the flat airbag to maintain an overall flat sitting feel; or the upper sponge pad is sloping and its own wedge slope is directly superimposed on the flat airbag to form an inclined sitting surface.

[0012] Furthermore, when it is necessary to adapt to the use scenarios of two or more people, taking the use of two people as an example, the airbag in the seat area is a split seat airbag or an integrated seat airbag. The split seat airbag is composed of two independent seat airbags, and the integrated seat airbag is composed of a single extra-large seat airbag.

[0013] Furthermore, when using a split-type seat cushion airbag, the sofa cover seat cushion area chamber is a single long zippered chamber with an internal partition layer sewn integrally with the sofa cover, dividing the seat cushion area chamber into left and right parts to accommodate two independent seat cushion airbags respectively; each of the left and right parts is equipped with an upper partition and a lower partition to place the upper and lower sponge pads respectively.

[0014] Furthermore, when using an integrated seat cushion airbag, the sofa cover seat cushion area chamber is an integral long zippered chamber that is compatible with the integrated seat cushion airbag; the chamber is equipped with an upper partition and a lower partition for corresponding placement of the upper and lower sponge pads.

[0015] Furthermore, the airbag is equipped with a self-closing anti-leak valve, which automatically closes after the inflation pump is pulled out. After closing, a dust plug is inserted to maintain stable air pressure and prevent dust from entering.

[0016] Furthermore, the surface of the airbag is provided with rough embossing or has added anti-slip silicone dots to increase the coefficient of friction with the inner wall of the cavity, thereby further reducing the risk of displacement.

[0017] Furthermore, both the upper and lower partitions are equipped with Velcro, which is used to restrict the displacement of the foam cushion assembly.

[0018] Furthermore, the upper layer of sponge pad is thicker than the lower layer of sponge pad, and the upper layer of sponge pad is filled with latex particles, memory foam fragments or salt pack functional fillers, and can be replaced by Velcro, thereby providing different sitting sensations such as warm, high rebound or slow rebound.

[0019] Furthermore, the airbag has an annular edge around its outer periphery, and fixing holes are provided at the four corners of the annular edge. Cable ties are sewn onto the corresponding inner corners of the chamber. The cable ties are detachably connected to the fixing holes to fix the airbag to the chamber at the corner position and prevent the airbag from shifting after inflation.

[0020] Furthermore, the zippers for each chamber are waterproof resin zippers, with the zipper length adapted to the circumference of the corresponding airbag after deflation. When closed, the zipper head is hidden in the pleats, without affecting the overall appearance.

[0021] Furthermore, the airbag is made of PVC or TPU and is airtightly sealed using high-frequency welding, hot pressing, or adhesive bonding processes.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0023] This modular adjustable inflatable sofa utilizes an independent airbag and a zippered modular sofa cover structure to break down the traditional one-piece air chamber into at least five independently operable airbags, with corresponding zippered chambers pre-installed within the sofa cover. Installation is simple: just insert the deflated airbags into the chambers one by one, inflate them, and close the zipper; a single person can quickly complete the operation. In case of partial damage, only the corresponding airbag needs to be replaced, eliminating the need to disassemble the entire sofa, significantly reducing maintenance costs and time.

[0024] By using a double-layer sandwich design with an upper and lower layer of sponge pads, the upper layer of sponge directly bears the pressure of the human body, providing a close fit and cushioning, eliminating the elastic overshoot and local stress concentration of pure inflatable structures; the lower layer of sponge isolates the airbag from the chamber wall, preventing the airbag fabric from repeatedly rubbing against the ground or sofa cover, thereby extending the service life of the airbag and solving the defects of pure inflatable seating feeling and easy wear and tear of fabric in the background technology.

[0025] By diversifying the support structure, ergonomic adjustability is achieved. The support structure includes wire or rib, which overcomes the problems of easy bulging and collapse caused by the simple inflation of existing technologies.

[0026] Equal-length drawn wires form flat airbags, providing even support and suitable for sitting upright at work; unequal-length drawn wires form slanted airbags, which automatically conform to the curves of the hips and legs after inflation, relieving pressure on the thighs.

[0027] Full-cavity brushed finish ensures high load-bearing capacity and long-term shape retention, preventing localized collapse; partial brushed finishes in non-full-cavity areas can be shaped into different patterns according to actual needs, thereby meeting different usage requirements.

[0028] Pure ribbed solutions are still superior to traditional pure air-filled structures in cost-sensitive markets when replacing wire-drawn structures. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a single sofa provided for an embodiment of this utility model;

[0031] Figure 2 A schematic diagram of the internal wire drawing structure of the airbag provided in this embodiment of the utility model;

[0032] Figure 3 This is a schematic diagram of the full-cavity drawn wire outer surface structure of the airbag provided in Embodiment 1 of this utility model;

[0033] Figure 4 for Figure 3 Product structure diagram;

[0034] Figure 5 This is a schematic diagram of the non-full-cavity drawn wire outer surface structure inside the airbag provided in Embodiment 3 of this utility model;

[0035] Figure 6 for Figure 5 Product structure diagram;

[0036] Figure 7 This is a schematic diagram of the split-type seat cushion airbag structure provided in an embodiment of the present utility model;

[0037] Figure 8 A schematic diagram of the integrated seat cushion airbag structure provided in an embodiment of this utility model.

[0038] Attached diagram description: 1-Airbag, 2-Upper sponge pad, 3-Lower sponge pad, 4-Stretch string, 5-Leak-proof valve, 6-Dust plug. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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.

[0042] The following is combined Figures 1-8 This utility model will be described in detail.

[0043] Example

[0044] Example 1: Single-seat full-cavity brushed flat airbag sofa

[0045] 1. Airbag assembly (core support and load-bearing reinforcement)

[0046] The airbag assembly comprises five independent air chambers: left armrest, right armrest, seat cushion, backrest, and headrest. Each air chamber is made of TPU or PVC fabric using a high-frequency welding process, ensuring good tensile strength at the seams and guaranteeing airtightness and structural stability. Among them, the seat cushion airbag 1 is the core component, with a full-cavity brushed wire 4 serving as its support structure.

[0047] The material for the filament 4 can be high-strength TPU thread (but is not limited to this material; other materials that meet actual needs are also acceptable), arranged longitudinally with uniform density, and fixed to the upper and lower inner walls of the airbag 1 through a high-frequency welding process, forming a fully covered, elastic longitudinal support array. This structure improves the load-bearing capacity of the airbag 1 after inflation, meeting the daily use and temporary load-bearing needs of adults, effectively solving the problem of insufficient load-bearing capacity of traditional pure inflatable sofas.

[0048] The surface of airbag 1 is embossed with a diamond-shaped rough texture, which increases the coefficient of friction with the sofa cover cavity. Each air chamber is equipped with a self-closing anti-leakage valve 5. The valve automatically closes after the air pump is removed, and a silicone dust plug 6 (interference fit with the valve) is inserted after closure to maintain stable air pressure for a long time. In addition, the independent air chamber design means that if a single air chamber is damaged, only the corresponding airbag 1 needs to be replaced, while the other air chambers can be used normally, reducing maintenance costs.

[0049] 2. Foam seat cushion assembly (functional filling and double fixation)

[0050] The seat cushion area adopts a double-layer sandwich structure of "upper layer sponge pad 2 + lower layer sponge pad 3", placed inside the double-layer partition of the sofa cover seat cushion cavity, forming a layered arrangement of "outer layer of sofa cover → upper layer sponge pad 2 → seat cushion airbag 1 → lower layer sponge pad 3". The upper layer sponge pad 2 is of moderate thickness and is filled with memory foam fragments. It can be replaced with a salt pack filling version (containing natural mineral salts and equipped with a removable heating pad, suitable for winter warmth and muscle relaxation scenarios) as needed. The lower layer sponge pad 3 is made of high-density polyester sponge, which is harder than the upper layer sponge and can isolate the airbag 1 from friction with the ground, extending the service life of the airbag 1.

[0051] The opening edges of both the upper and lower compartments are sewn with Velcro to prevent the sponge pad from shifting during use.

[0052] In the specific implementation process, it is worth noting that the sponge pad is not limited to the seat area; sponge pads can be placed in other areas of human contact. Furthermore, the upper sponge pad 2 and the lower sponge pad 3 do not necessarily have to be installed simultaneously; they can be selectively installed according to actual needs.

[0053] 3. Zippered modular sofa cover (optimized installation and detailed design)

[0054] The sofa cover is made of 1800D imitation linen polyester Oxford cloth (this material is preferred but not limited to; those skilled in the art can choose according to actual needs), which combines wear resistance and breathability. The inside is double-stitched to form five independent chambers, each equipped with a waterproof resin zipper. The zipper length is adapted to the circumference of the deflated airbag. When the zipper of the seat cushion chamber is closed, the zipper head is hidden in the folds of the chamber edge, not affecting the appearance.

[0055] Installation Procedure: Unzip each chamber. First, insert the deflated left armrest, right armrest, backrest, and headrest airbags 1 into their respective chambers. Next, unzip the seat cushion chamber, place the lower layer sponge pad 3 into the lower compartment and close the Velcro, then place the deflated seat cushion airbag 1 inside. Finally, place the upper layer sponge pad 2 into the upper compartment and secure it with Velcro. After inflating each airbag 1, check its shape and zip all zippers closed before use. Example 2: Single-seat, full-cavity, unequal-length, slanted airbag sofa

[0056] 1. Airbag assembly (sloping structure and tension design)

[0057] The airbag assembly contains five independent air chambers. The seat cushion airbag 1 adopts a full-cavity wire 4 support structure. The core difference lies in the differentiated setting of the wire 4 length: the wire 4 on the side closer to the backrest is shorter, and the wire 4 on the side farther from the backrest is longer. After being fixed by high-frequency welding, the airbag 1 naturally forms an inclined surface due to the tension difference of the wire 4 when inflated, conforming to the natural curve of the human body from the buttocks to the legs, reducing fatigue from sitting for a long time.

[0058] The airbag 1 has a ring-shaped edge around its outer perimeter, with fixing holes at the four corners of the ring-shaped edge; nylon cable ties are sewn into the inner corners of the sofa cover cushion cavity, with one end of the cable tie fixed to the cavity and the other end having a buckle. After the airbag 1 is inserted into the cavity, the cable tie is passed through the fixing holes and fastened to achieve corner fixation and reduce the risk of displacement.

[0059] 2. Sponge seat cushion assembly (two adapter options)

[0060] The flat sponge pad 2 is flat and its size perfectly matches the contour of the sloping airbag 1. It is filled with latex particles. After placement, the flat sponge naturally conforms to the sloping surface of the airbag 1, providing a tilted seating feel suitable for reclining and relaxation scenarios, and improving lumbar support.

[0061] The solution uses a slanted sponge: the upper sponge pad 2 is slanted, with the angle of inclination complementing that of the airbag 1. The thickness gradually changes from the front to the back, and the material is high-resilience latex. After the sponge and airbag 1 are attached, the upper surface returns to a near-horizontal state, providing a flat seating experience suitable for scenarios requiring proper posture, such as office work and dining.

[0062] 3. Sofa covers and other components

[0063] The sofa cover structure is the same as in Example 1, except that corner straps are added to the seat cushion cavity; the structure of other air chambers (left armrest, right armrest, etc.), the method of fixing the sponge pads, and the installation process are all the same as in Example 1, ensuring overall consistency and compatibility.

[0064] Example 3: Single-seat non-full-cavity brushed airbag sofa

[0065] In Example 1, as Figure 3 and Figure 4As shown, the seat cushion airbag 1 has been introduced to use full-cavity wire drawing. When the wire drawing 4 covers the entire area inside the airbag 1 and all the wire drawing 4 are set to the same length, a full-cavity wire drawing 4 support structure is formed. After inflation, the airbag 1 is subjected to uniform force and the surface remains flat. However, this embodiment uses non-full-cavity wire drawing 4 as the support structure.

[0066] 1. Airbag assembly (non-full-cavity stretch fabric with shape flexibility)

[0067] The airbag assembly contains five independent air chambers. The core innovation lies in the seat cushion airbag 1, which adopts a non-full-cavity brushed 4-support structure. The non-full-cavity brushed 4-support structure is divided into the following two types:

[0068] Scenario 1: Regular, non-full-cavity, equal-length stringing, with an uneven, patterned surface on the airbag.

[0069] When the filaments 4 are only set in a preset area within the seat cushion airbag 1, and not in non-preset areas, and the "areas with filaments 4" and "areas without filaments 4" are regularly distributed, and the filaments 4 in the areas with filaments 4 are all of equal length, a non-full-cavity filament structure is formed. After inflation, the areas with filaments 4 maintain a fixed height due to the support of the filaments 4, while the areas without filaments 4 can expand freely, creating a significant height difference between the two, resulting in an uneven surface on the airbag 1. Figure 5 and Figure 6 The flower pattern shown.

[0070] The wire 4 is made of high-strength TPU thread (the material selection is the same as in Example 1), arranged longitudinally in a predetermined area with uniform density, and fixed to the upper and lower inner walls of the airbag 1 by high-frequency welding.

[0071] Scenario 2: Equal-length wire drawing in a specific area, focusing on local support.

[0072] When a preset circular area is defined on the surface of the airbag 1 (e.g., only the area in contact with the user's buttocks is defined), and an equal-length filament 4 is set only in this circular area and no filament 4 is set in the other areas, a partial non-full cavity filament 4 structure is formed; this setting can specifically enhance the support of specific contact areas, while the other areas do not affect the overall user experience.

[0073] The wire 4 is made of high-strength TPU thread (the material selection is the same as in Example 1), which is arranged longitudinally in a dense manner in the circular area and fixed to the upper and lower inner walls of the airbag 1 by high-frequency welding. It focuses on strengthening the support of the buttock contact area to prevent the airbag 1 from collapsing due to prolonged sitting. The other areas are not constrained by the wire 4, ensuring the softness when other parts of the body come into contact with it.

[0074] 2. Foam seat cushion assembly (irregular shape adaptation and functional expansion)

[0075] The upper sponge pad 2 is round and filled with latex particles. It can be replaced with a salt pack filled version (round structure with detachable heating function) as needed. The lower sponge pad 3 is also round and made of high-density polyester sponge to isolate the airbag 1 from friction with the ground.

[0076] The sofa cover cushion has a circular structure with a double-layer partition sewn inside to fit the airbag 1. The edges of the partition are sewn with Velcro, and the fixing method is the same as in Example 1, ensuring that the circular sponge pad fits stably with the airbag 1 without the risk of displacement.

[0077] 3. Installation of other components

[0078] The structure of the left armrest, right armrest, backrest, and headrest airbag 1 (independent air chamber, anti-leakage valve 5, etc.), and the design of the corresponding chamber of the sofa cover (waterproof zipper, fabric material) are all the same as in Example 1. The installation process only requires placing the deflated round seat cushion airbag 1 and the round sponge pad into the corresponding round chamber of the sofa cover. The other steps are the same as in Example 1. The operation is convenient and the shape is highly adaptable.

[0079] Example 4: Single-seat pure ribbed support airbag sofa

[0080] 1. Airbag assembly (balancing reinforcement and cost)

[0081] The airbag assembly comprises five independent air chambers. The seat cushion airbag 1 is made of PVC fabric using a hot-pressing process, with no internal fraying (4), only multiple TPU reinforcing ribs. The ends of the reinforcing ribs are fixed to the upper and lower inner walls of the airbag 1 by high-frequency welding. After inflation, the reinforcing ribs and the airbag 1 work together to provide support, resulting in a flat seat surface and sufficient load-bearing capacity for daily use. It is suitable for users with limited budgets who require basic support.

[0082] Anti-slip silicone dots are attached to the surface of the airbag 1 to increase the coefficient of friction with the sponge pad; each air chamber is equipped with a self-closing anti-leakage valve 5 and a dust plug 6 to maintain stable air pressure.

[0083] 2. Sponge cushion assembly and sofa cover

[0084] The foam cushion assembly adopts a double-layer structure: the upper foam pad 2 is made of ordinary polyester foam, providing basic seating comfort; the lower foam pad 3 is made of high-density polyester foam, protecting the airbag 1. The sofa cover structure is consistent with that of Example 1 (1800D Oxford cloth, five independent chambers, waterproof zipper), and the Velcro on the edge of the partition is used to fix the foam pad to ensure no risk of displacement.

[0085] 3. Installation and Usage Advantages

[0086] The installation process is the same as in Example 1, and the operation is simple. The pure bracing support design ensures the stability of the foundation while reducing costs. Furthermore, each damaged air chamber can be replaced independently, making maintenance convenient and suitable for rental, temporary use and other scenarios.

[0087] Example 5: Single-seat basic inflatable sofa

[0088] 1. Airbag assembly (simplified design and basic functions)

[0089] The airbag assembly comprises five independent air chambers, all made of PVC fabric bonded together with adhesive. There are no internal fraying or reinforcing ribs; the shape is maintained solely by the tension of the fabric after inflation. When inflated, the seat's load-bearing capacity meets temporary usage needs, making it suitable for rental housing, outdoor camping, and other similar scenarios.

[0090] The surface of the airbag 1 is pressed with anti-slip texture to increase friction with the sofa cover; each air chamber is equipped with a self-closing anti-leakage valve 5 and a dust plug 6 to meet the air pressure stability requirements for basic use; when a single air chamber is damaged, the corresponding airbag 1 can be quickly replaced, resulting in low maintenance costs.

[0091] 2. Sponge cushion assembly and sofa cover

[0092] The foam cushion assembly adopts a single-layer structure: only ordinary polyester foam is placed in the upper layer, which is placed in a single-layer compartment in the sofa cover cushion cavity; the edges of the compartment are sewn with Velcro to prevent the foam cushion from shifting during use.

[0093] The sofa cover is made of 1200D Oxford cloth, which is lightweight and easier to store; the inside has five independent compartments sewn together and is equipped with a basic resin zipper, simplifying the process and controlling costs.

[0094] 3. Installation and Usage Features

[0095] The installation process is simplified: Unzip each chamber, insert the deflated airbag 1 into the corresponding chamber, put in a single layer of sponge pad, inflate, and then zip up the chamber to use; the overall weight is light, the storage volume is small, and the portability is significantly improved, making it suitable for short outdoor trips or temporary use.

[0096] Example 6: Two-seater split-type full-cavity brushed airbag sofa

[0097] 1. Airbag assembly (split design and welded sections)

[0098] The airbag assembly includes four independent air chambers: the left armrest, right armrest, backrest, and headrest, as well as two independent seat cushion air chambers (split design), suitable for the independent use of two people. The seat cushion air chambers are made of PVC fabric through high-frequency welding. A welding partition is set between the two seat cushion air chambers to make the left and right seat cushion air chambers relatively independent in terms of force, avoiding the influence of force on one side on the other side, while maintaining the continuity of the seat surface for two people.

[0099] Each seat cushion chamber features a full-cavity, four-support structure with TPU reinforcing ribs, forming a composite support system of "rib reinforcement + four-grid bracing". After inflation, each individual seat cushion chamber has good load-bearing capacity, and the overall structure can support two people for daily use. The seat surface is flat with no risk of localized collapse.

[0100] 2. Sponge seat cushion assembly (independently adaptable and reinforced with anti-slip properties)

[0101] Equipped with two independent double-layer sponge pads, each set includes an upper sponge pad 2 and a lower sponge pad 3: the left upper sponge pad 2 is filled with latex particles, and the right upper sponge pad 2 is filled with salt packs (with heating function) to meet the different sitting comfort needs of two people; the two sets of sponge pads are placed in the left and right independent compartments of the sofa cover cushion cavity, with a small gap reserved between the compartments to balance independence and continuity.

[0102] The lower sponge pad 3 is made of high-density polyester sponge with an anti-slip silicone film pasted on the surface. This, combined with the anti-slip texture on the surface of the seat cushion airbag 1, enhances the anti-slip effect and reduces the risk of airbag 1 shifting.

[0103] 3. Zippered modular sofa cover (divided design and double fastening)

[0104] The sofa cover's cushion area is a single, elongated chamber with an internal partition layer sewn into it, dividing the chamber into two independent spaces, each accommodating two cushion air chambers. Each independent space has a double-layer partition with Velcro sewn along the edges, using the same fastening method as in Example 1. Nylon cable ties are sewn into the inner corners of the sofa cover, engaging with the fixing holes on the annular edge of the cushion airbag 1 to secure the airbag 1 to the corner of the chamber, providing double protection against displacement.

[0105] The cavity design, fabric material (1800D Oxford cloth), and zipper configuration (waterproof resin zippers) of other areas (left armrest, right armrest, etc.) are the same as in Example 1, ensuring overall quality and consistency. Example 7: Two-seater integrated ribbed and brushed 4-composite support airbag sofa

[0106] 1. Airbag assembly (integrated design and composite support)

[0107] The airbag assembly comprises four independent air chambers: the left armrest, right armrest, backrest, and headrest, as well as an integrated seat cushion air chamber, suitable for scenarios that prioritize a comfortable seating experience for two people. The seat cushion air chamber is made of TPU fabric using high-frequency welding, with internal TPU reinforcing ribs as the main support, and full-cavity brushed wire 4 arranged, which radiates outwards from the reinforcing ribs to form a composite support system of "reinforcing ribs + brushed wire 4 mesh".

[0108] After inflation, the composite support system ensures good overall load-bearing capacity of the seat cushion air chamber. At the same time, the welded partitions along the length divide the seat cushion air chamber into multiple independent stress areas, preventing one side from being affected by the other side, thus maintaining the continuity of the overall seat surface and ensuring stability during use.

[0109] 2. Foam seat cushion assembly (overall fit and zoned design)

[0110] Equipped with a set of long strip double-layer sponge pads: the upper sponge pad 2 is filled with a mixture of latex particles and memory foam, providing both resilience and a comfortable fit, and can be completely removed and replaced with a full salt pack filling version (with zoned heating function, and independent temperature control on the left and right sides); the lower sponge pad 3 is made of high-density polyester sponge with anti-slip texture pressed on the surface, which works in conjunction with the anti-slip texture on the surface of the airbag 1 to improve stability.

[0111] 3. Zippered modular sofa cover (optimized for overall fit and installation)

[0112] The sofa cover cushion chamber is a long, rectangular structure, perfectly matching the size of the one-piece cushion air chamber. Double layers are sewn on the inside, with Velcro sewn onto the edges of the openings. Nylon cable ties are sewn into the inner corners of the chamber, which fit into the fixing holes on the ring edge of the cushion airbag 1 to secure the corners of the airbag 1.

[0113] The design and fabric materials of other areas are consistent with those of Example 1. The installation process is the same as that of Example 1, which is convenient to operate and ensures the comfort and stability of two people using it.

[0114] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A modular adjustable inflatable sofa, characterized in that: Includes airbag components, foam cushion components, and zippered modular sofa covers; The airbag assembly consists of multiple independent airbags (1) that can be inflated and deflated individually. The airbag (1) has a support structure inside, which includes wires (4) or reinforcing bars. The zippered modular sofa cover is a continuous whole fabric. At least five independent chambers with zipper openings are formed by sewing on its inner side, which correspond to the left armrest, right armrest, seat cushion, backrest and headrest areas respectively. Each chamber is used to separately contain the airbag (1) in the corresponding area after the airbag (1) is deflated, and the chamber wall is used to limit the airbag (1) after inflation. The cushion area cavity is provided with an upper and lower partition layer that are sewn together with the main fabric of the sofa cover. The sponge cushion assembly includes an upper sponge pad (2) and a lower sponge pad (3). The upper sponge pad (2) is placed in the upper compartment to bear the pressure of the human body to enhance the comfort and fit of the seat. The lower sponge pad (3) is placed in the lower compartment to prevent wear and tear on the airbag (1) and extend the service life of the airbag (1).

2. The modular adjustable inflatable sofa according to claim 1, characterized in that: The support structure consists of longitudinally arranged wires (4) of equal or unequal length, which are high-frequency fused to the upper and lower inner walls of the airbag (1) to form an elastic longitudinal support array, which is used to maintain the shape stability of the airbag (1) and disperse the surface pressure after the airbag (1) is inflated. When the wire (4) is set at equal length in the airbag (1), a planar airbag is formed; when the wire (4) is set at unequal length with gradually changing length in the airbag (1), that is, when the length increases or decreases sequentially along a certain direction of the airbag, an inclined airbag is formed.

3. The modular adjustable inflatable sofa according to claim 1, characterized in that: The supporting structure is a rib, and the two ends of the rib are high-frequency fused to the upper and lower inner walls of the airbag (1). After inflation, the rib and the airbag (1) work together to provide support and maintain shape stability.

4. The modular adjustable inflatable sofa according to claim 2, characterized in that: When the airbag in the cushion area is an inclined airbag, the upper sponge pad (2) is planar in shape, and its outer contour is consistent with the inclined airbag, presenting an inclined sitting feeling as the inclined airbag is tilted. Alternatively, the upper sponge pad (2) may be sloping, with its tilt angle complementing that of the airbag (1), so that the upper surface returns to approximately horizontal after the two sloping surfaces are joined, providing a flat sitting feel.

5. The modular adjustable inflatable sofa according to claim 2, characterized in that: When the filament (4) covers the entire area inside the airbag (1), it forms a full-cavity filament; or when it only covers a local area inside the airbag (1), and the filament (4) in the local area is not set with a gradual change in length, but is arranged according to a preset pattern, it forms a non-full-cavity filament.

6. The modular adjustable inflatable sofa according to claim 2, characterized in that: When the airbag in the cushion area is a planar airbag, the upper sponge pad (2) is planar and is superimposed on the planar airbag (1) to maintain an overall flat sitting feel; Alternatively, the upper sponge pad (2) may be in the form of a slope, and its own wedge-shaped slope may be directly superimposed on the planar airbag to form an inclined sitting surface.

7. The modular adjustable inflatable sofa according to claim 1, characterized in that: When it is necessary to adapt to the use scenarios of two or more people, taking the use of two people as an example, the airbag in the seat area is a split seat airbag or an integrated seat airbag. The split seat airbag is composed of two independent seat airbags, and the integrated seat airbag is composed of a single extra-large seat airbag.

8. The modular adjustable inflatable sofa according to claim 7, characterized in that: When using a split-type seat cushion airbag, the sofa cover seat cushion area chamber is a single long zippered chamber with an internal partition layer sewn together with the sofa cover, dividing the seat cushion area chamber into left and right parts to accommodate two independent seat cushion airbags respectively; each of the left and right parts is equipped with an upper partition and a lower partition to place the upper sponge pad (2) and the lower sponge pad (3) respectively.

9. The modular adjustable inflatable sofa according to claim 7, characterized in that: When an integrated seat cushion airbag is used, the sofa cover seat cushion area chamber is an integral long strip zipper chamber that is adapted to the integrated seat cushion airbag; the chamber is provided with an upper partition and a lower partition for corresponding placement of the upper sponge pad (2) and the lower sponge pad (3).

10. The modular adjustable inflatable sofa according to claim 1, characterized in that: The airbag (1) is equipped with a self-closing anti-leakage valve (5). The anti-leakage valve (5) closes automatically after the inflation pump is pulled out. After closing, a dust plug (6) is inserted to maintain stable air pressure and prevent dust from entering.

11. The modular adjustable inflatable sofa according to claim 1, characterized in that: The surface of the airbag (1) is provided with rough embossing or with added anti-slip silicone dots to increase the coefficient of friction with the inner wall of the cavity and further reduce the risk of displacement.

12. The modular adjustable inflatable sofa according to claim 1, characterized in that: Both the upper and lower partitions are equipped with Velcro, which is used to restrict the displacement of the foam cushion assembly.

13. The modular adjustable inflatable sofa according to claim 1, characterized in that: The upper layer of sponge pad (2) is thicker than the lower layer of sponge pad (3), and the upper layer of sponge pad (2) is filled with latex particles, memory foam fragments or salt pack functional fillers, and is installed replaceably through Velcro, thereby providing different sitting sensations such as warm, high rebound or slow rebound.

14. The modular adjustable inflatable sofa according to claim 1, characterized in that: The airbag (1) has an annular edge on its outer periphery. Each of the four corners of the annular edge has a fixing hole. A cable tie is sewn onto the inner corner of the cavity. The cable tie is detachably connected to the fixing hole to fix the airbag (1) to the cavity at the corner position and prevent the airbag (1) from shifting after inflation.

15. The modular adjustable inflatable sofa according to claim 1, characterized in that: The zippers in each chamber are waterproof resin zippers. The zipper length is adapted to the circumference of the corresponding airbag (1) after deflation. After closing, the zipper head is hidden in the folds and does not affect the overall appearance.

16. The modular adjustable inflatable sofa according to claim 1, characterized in that: The airbag (1) is made of PVC or TPU and is airtight by high-frequency welding, hot pressing or glue bonding process.

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