Air cushion with built-in inflating device

Abstract

The utility model discloses an air cushion with a built-in inflating device, which comprises a fabric layer, a backing material layer, an anti-slip layer, a plurality of airbags communicated by air passages formed in the middle, a micro-pressure one-way inflating valve mounted on the inflating airbags, and a quick deflating valve mounted on the deflating airbags, the transition air bag, the deflation air bag and all other air bags are communicated through a plurality of airflow channels. The seat cushion can be inflated without an additional inflation tool, is more convenient to carry about, can be subjected to pressure reduction fine adjustment when the inflation pressure is too large, can be freely adjusted by a user according to personal preference, is easy to fold and store after being exhausted, is convenient to carry about, is not limited to indoor use, and is convenient to carry about. And the chair can be used for outdoor leisure.

Description

Technical Field

[0001] The utility model relates to the technical field of household cushions, in particular to an air cushion with a built-in inflation device. Background Art

[0002] In the field of traditional cushions, most products are filled with sponge or foam plastic, woven with bamboo or wood, or made of soft three-dimensional mesh plastic. These materials may easily absorb moisture and harbor dirt and breed bacteria during use, or the materials are hard and have poor anti-slip properties, making the user experience uncomfortable and inconvenient to carry. Air cushions, on the other hand, have multiple airbags formed between the upper and lower cushion bodies. Air circulates between the airbags, which are relatively sealed and rely on the internal air pressure to provide a cushioning and decompression effect when the user sits down. Air cushions are generally made of materials such as TPU, which are lighter than traditional cushions and less likely to breed bacteria.

[0003] However, the air cushions currently on the market need to be equipped with external inflation tools to fill the air holes of the cushion airbags. When using them outdoors, the inflation tools need to be carried, which is very inconvenient. At the same time, the existing air cushions cannot conveniently adjust the airbag pressure to achieve the effect of meeting the best comfort level for the user. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art products and provide an air cushion with a built-in inflation device, a built-in inflation and quick deflation device, so that the cushion can be inflated without the aid of any additional inflation tool, which is not only convenient to use and operate, but also can save unnecessary accessories and consumables, and can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An air cushion with a built-in inflation device comprises a fabric layer, a base material layer and an anti-skid layer. The fabric layer and the base material layer are laminated up and down to form a plurality of air bags in between. The anti-skid layer is arranged below the base material layer. The plurality of air bags are connected by airways. Two of the air bags are respectively provided with a micro-pressure one-way inflation valve and a quick deflation valve.

[0007] Furthermore, the fabric layer is made of a composite material of TPU and high elastic fabric, the base material layer is made of a composite material of TPU and tensile fabric, and the anti-slip layer is made of fabric with an anti-slip coating. The micro-pressure one-way inflation valve and the quick deflation valve are made by vacuum forming or hot pressing, high-frequency welding, sewing and other processes.

[0008] Preferably, the air cushion with built-in inflation device has three airbags on one side of the periphery as an inflation airbag, a transition airbag and a deflation airbag, respectively, the inflation airbag is installed with the micro-pressure one-way inflation valve, and the deflation airbag is installed with the quick deflation valve. The three are arranged on the same sideline to avoid affecting the use.

[0009] Preferably, a high-elasticity memory sponge is arranged in the inflatable airbag, and the micro-pressure one-way inflation valve is arranged below the high-elasticity memory sponge; a dedicated inflation airway is arranged between the inflatable airbag and the transition airbag, and the inflatable airbag is only connected to the transition airbag through an airway, and is not connected to other airbags; the transition airbag is connected to other adjacent airbags, and airflow airways are arranged between them, and the transition airbag, the deflated airbag and all airbags except the inflatable airbag are connected through multiple airflow airways to facilitate rapid airflow circulation.

[0010] Furthermore, the ventilation cross-sectional area of ​​the micro-pressure one-way inflation valve and the ventilation cross-sectional area of ​​the dedicated inflation airway have a certain proportional relationship, which is usually controlled at 5:1 or above. That is, the ventilation cross-sectional area of ​​the micro-pressure one-way inflation valve is 5 times or more than 5 times the cross-sectional area of ​​the dedicated inflation airway. This ratio determines the final inflation pressure of the air cushion. The smaller the ratio, the greater the inflation pressure, and vice versa.

[0011] The one-way inflation valve is composed of an inflation valve body, an inflation valve core, an inflation valve silicone membrane valve sheet, an inflation valve cover, an inflation valve spring, and an inflation valve protective cover. The inflation valve body is welded on the base material layer and its position is facing the center of the inflatable airbag; the inflation valve core, the inflation valve silicone membrane valve sheet, and the inflation valve spring are assembled into an assembly, and the assembly can move axially within the inflation valve body. The inflation valve core has a deflation function and is used for pressure reduction fine-tuning.

[0012] The quick deflation valve is an integrated structure, comprising a deflation valve body, a deflation valve core, and a deflation valve cover; the quick deflation valve body is welded on the base material layer, and its position is directly opposite to the center of the deflation airbag.

[0013] The working principle of the inflatable airbag is as follows: the inflatable airbag is inflated by repeatedly pressing the inflatable airbag. When the inflatable airbag is pressed, the internal pressure increases. Due to the one-way non-return property of the built-in inflation valve, the compressed air inside the airbag can only flow to the adjacent airbag through the inflation airway, that is, the air is inflated once inside the air cushion. When the inflatable airbag is released, the high-elastic memory foam inside it rebounds and stretches quickly. Since the ventilation cross-sectional area of ​​the dedicated inflation airway is much smaller than the ventilation cross-sectional area of ​​the inflation valve, a short-term negative pressure can be generated inside the airbag to suck open the silicone valve sheet of the inflation valve, allowing external air to enter the inflatable airbag. When the internal pressure of the inflatable airbag reaches equilibrium with the external air pressure, the silicone valve sheet of the inflation valve closes. Press the inflatable airbag again to inflate the air cushion for the second time. Repeat this operation until the cushion pressure reaches an ideal state.

[0014] Furthermore, when external force is applied to the valve core assembly of the micro-pressure one-way inflation valve in the inflatable airbag, the internal silicone mold valve sheet and the valve body can quickly disengage and release the compressed air inside the airbag. Since the inflation airway cross-section of the inflatable airbag and the transition airbag is very small, the air in the air cushion flows out slowly, thereby achieving fine-tuning of the internal pressure of the airbag.

[0015] A quick deflation valve is arranged inside the deflated airbag, which is mainly used to quickly release the gas inside the air cushion to facilitate subsequent folding, storage, cleaning and carrying.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The air cushion is made of a new type of airbag fabric made of TPU and high-elastic fabric and a fabric base with an anti-slip coating, which is processed into an inflatable combined airbag. The base has excellent anti-slip properties, and the airbag structure makes its contact surface have excellent air exhaust and moisture removal properties. The airbag is hollow inside, and external moisture and dirt cannot enter the cushion and breed bacteria and other harmful substances.

[0018] 2. The air cushion design has a built-in inflation structure device, so that it can be inflated without relying on any additional inflation tools. You don’t need to carry any external inflation tools when going out. The cushion is easy to fold and store after being deflated, making it easier to carry around. It is not only limited to indoor use, but can also be used for outdoor leisure.

[0019] 3. The built-in one-way valve can not only be used for inflation, but also can instantly release the internal gas when the inflation pressure is too high, and fine-tune the internal pressure of the seat cushion. Users can freely adjust the internal air pressure according to their personal preferences, which brings excellent comfort. At the same time, the pressure airbag structure can also provide a good buffering and decompression effect against the impact of sitting pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the main material combination of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the micro-pressure one-way inflation valve of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the quick air release valve of the utility model;

[0024] Figure 5 This is a schematic diagram of the inflation working principle of the utility model;

[0025] Figure 6 This is a schematic diagram of the pressure fine-tuning principle of the utility model;

[0026] Figure 7 This is a schematic diagram of the rapid deflation principle of the utility model;

[0027] Figure 8 This is a schematic diagram of an air cushion according to another embodiment of the utility model.

[0028] In the figure: 1 fabric layer, 2 micro-pressure one-way inflation valve, 3 quick deflation valve, 4 bottom material layer, 5 anti-skid layer, 6 special inflation airway, 7 airflow airway, 8 high-elastic sponge, 9 edging, 10 airbag, 101 TPU material one, 102 high-elastic fabric material, 401 TPU material two, 402 fabric material one, 501 fabric material two, 502 anti-skid coating; 21 inflation valve body, 22 inflation valve core, 23 inflation valve silicone membrane valve sheet, 24 inflation valve cover, 25 inflation valve spring, 26 inflation valve dust cover; 301 deflation valve body, 302 deflation valve core, 303 deflation valve cover. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example 1: See Figure 1-7 , is a square air cushion, applying the technical solution of the utility model. Figure 1 and Figure 2As shown, this embodiment uses a polyether or polyester TPU material 101 and a high elastic fabric material 102 such as Lycra or milk silk, and uses an adhesive to dry-compound a composite material, and then uses a vacuum forming or hot pressing process to make a fabric layer 1; a polyether or polyester TPU material 401 and other tensile fabric materials such as non-woven fabric or chemical fiber cloth 402, and uses an adhesive to dry-compound a composite material as a base material layer 4; the fabric layer 1 and the base material layer 4 are welded together by a high-frequency machine, and a plurality of airbags 10 are formed in the middle to form an airbag body. This embodiment is provided with 36 airbags, arranged in a square. Air passages are provided between the airbags 10, and the internal pressure of the airbags can flow freely; airbag 10A is selected as the inflatable airbag, and airbag 10A is only connected with the adjacent transition airbag 10C through a dedicated inflation air passage 6; airbag 10B is selected as the deflated airbag; airbag 10B is connected with the transition airbag 10C and all other airbags 10D through an airflow air passage 7; a hole is opened at a position corresponding to the center of the base material layer 4 and the airbag 10A, and a micro-pressure one-way inflation valve 2 is welded at high frequency; a hole is opened at a position corresponding to the center of the base material layer 4 and the airbag 10B, and a quick deflation valve 3 is welded; the anti-slip layer 5 is sewn around the cushion body and then edged with an edge material 9.

[0031] like Figure 3 As shown, the micro-pressure one-way inflation valve 2 of the air cushion of the utility model is composed of a valve body 21, a valve core 22, a silicone membrane valve sheet 23, a valve cover 24, a spring 25, and a protective cover 26. The valve core 22, the silicone membrane valve sheet 23, and the spring 25 are assembled together and inserted into the valve body 21. The valve core assembly can move up and down, and the spring 25 provides a reverse force to make the silicone membrane valve sheet 23 and the mouth of the valve body 21 close to play a primary sealing role. The valve cover 24 can be plugged in and out, and plays a secondary sealing role after being tightly closed.

[0032] like Figure 4 As shown, the quick deflation valve 3 of the air cushion of the utility model is composed of three parts: 301 valve body, 302 valve core, and 303 valve cover, which are combined into an integral valve. The 302 valve core is inserted into the 301 valve body, and the 303 valve cover is inserted into the 302 valve core. After all are inserted, the air valve is closed and sealed; otherwise, the air valve is opened. The deflation valve has three structural forms. Form A is a structure after the three parts are pulled apart, and form B is a structure after the three parts are inserted. When an external force is applied to the 303 valve cover, the outer wall of the valve body 303 is reversed to form form C; form C can shrink the valve body and hide it inside the airbag 10B.

[0033] Inflatable working principle: Figure 5As shown, the inflation principle of the internally inflated air cushion of the utility model is that when inflating, the deflation valve 3 must be kept in a closed state; the valve cover 24 of the inflation valve 2 is in an open state; when a pressure F is applied to the inflatable airbag 10A, the airbag 10A and its internal high-elastic memory foam 8 are compressed, and the internal pressure thereof increases, and the air in the airbag 10A quickly enters the adjacent airbag 10C through the airway 6. At the same time, the internal high pressure forces the silicone diaphragm 23 of the inflation valve 2 to tightly adhere to the valve body 21 to play a sealing role, thereby inflating the entire cushion. When the external force F of the airbag 10A is removed, the sponge inside the airbag rebounds and stretches, and a short-term negative pressure is generated inside the airbag 10A, sucking open the silicone valve sheet 23 of the inflation valve 2. The silicone valve sheet 23 is made of flexible silicone and can be opened with only a very small pressure; the external air is sucked into the airbag, and when the internal pressure of the airbag 10A reaches equilibrium with the external atmospheric pressure, the silicone valve sheet 23 rebounds and re-attaches to the inflation valve body 21. At the same time, a small amount of gas inside the airbag 10C will return to the airbag 10A through the airway 6. Since the ventilation cross-sectional area of ​​the airway 6 is much smaller than the air inlet channel cross-sectional area of ​​the inflation valve 2, most of the gas enters the airbag 10A from the outside through the inflation valve 2, so the small amount of gas returned by the airbag 10C does not affect the inflation rate. The ratio of the ventilation cross-sectional area of ​​the inflation valve 2 to the ventilation cross-sectional area of ​​the dedicated inflation airway 6 is not less than 5:1. The larger the ratio, the higher the inflation pressure, and vice versa. The maximum inflation pressure can be adjusted by controlling the ratio of the ventilation cross-sectional area of ​​the dedicated inflation airway 6 to the inflation valve 2. The valve cover 24 of the inflation valve 2 must be tightly closed after inflation is completed.

[0034] Working principle of pressure fine-tuning: Figure 6 As shown, when the internal pressure of the seat cushion needs to be reduced, the valve cover 24 of the inflation valve 2 must be opened, and the pressing force F2 is applied to the valve core 24 of the inflation valve 2, so that the assembly composed of the valve core 24 and the silicone membrane valve sheet 23 can be lifted up, and the silicone membrane valve sheet 23 is separated from the main body 21 of the inflation valve 2, and the internal gas of the airbag 10A is discharged to the outside through the airway of the inflation valve 2; at the same time, the internal gas of the airbag 10C adjacent to the airbag 10A flows out to the airbag 10A through the airway 6 and is discharged to the outside; because the ventilation cross-section of the airway 6 is very small, its deflation speed is very slow. However, when the pressing force F2 is cancelled, the directional force of the internal spring 25 causes the silicone membrane valve sheet 23 to quickly close with the valve body 21, preventing the internal gas from leaking out. By repeatedly applying short-term pressure to the valve core 24 of the inflation valve 2, the internal pressure can be controlled to be reduced until it reaches the ideal state. Similarly, if the seat cushion needs to be inflated, the inflation action can be performed. When the pressure adjustment is completed, the valve cover 24 of the inflation valve 2 must be tightly closed.

[0035] Working principle of quick deflation: Figure 7As shown, the quick deflation principle of the internally inflated air cushion of the utility model is that when the cushion needs to be cleaned, stored, folded or carried outside, the valve core 302 and valve cover 303 of the quick deflation valve 3 can be unplugged, and the cushion can be quickly deflated by rolling and pressing. After deflation, the valve core 302 and valve cover 303 of the quick deflation valve 3 must be tightly closed to prevent external air from flowing back into the cushion or water from entering the cushion during cleaning, so as to maintain the compressed state after deflation. After deflation, the next step of folding, storage, or cleaning can be carried out.

[0036] The built-in inflatable device of the utility model is suitable for air cushions whose main materials are rubber-plastic thermoplastic elastomers such as TPU or PVC.

[0037] Embodiment 2: Figure 8 As shown, this embodiment is an air cushion with square front corners and arc rear corners, suitable for round chairs. Compared with the first embodiment, the shape of the cushion is different, and the shape and arrangement of the airbags formed between the fabric layer and the base layer are different. Applying the technical solution of the utility model, a row of inflatable airbags, transition airbags and deflated airbags are selected to be set behind the cushion, which are 10A, 10B, and 10C in the figure respectively. The inflatable airbag 10A is only connected to the transition airbag 10B through a dedicated inflatable airway. The working principle of this embodiment is the same as that of the first embodiment.

[0038] The above is only the preferred method of the utility model, and it certainly cannot be used to limit the scope of rights of the utility model. It should be pointed out that for ordinary technicians in this technical field, modifications or equivalent replacements of the technical solutions of the utility model do not depart from the protection scope of the utility model.

Claims

1. An air cushion with a built-in inflatable device, characterized in that: It includes a fabric layer, a base material layer, and an anti-skid layer. The fabric layer and the base material layer are laminated up and down to form a plurality of airbags in the middle. The anti-skid layer is arranged below the base material layer. The plurality of airbags are connected by airways. Two of the airbags are respectively equipped with a micro-pressure one-way inflation valve and a quick deflation valve; the micro-pressure one-way inflation valve consists of an inflation valve body, an inflation valve core, an inflation valve silicone membrane valve sheet, an inflation valve cover, an inflation valve spring, and an inflation valve protective cover. The inflation valve body is welded on the base material layer and its position is directly opposite to the center of the inflatable airbag; the inflation valve core, the inflation valve silicone membrane valve sheet, and the inflation valve spring are assembled into an assembly, and the assembly can move axially in the inflation valve body. The inflation valve core has a deflation function and is used for pressure reduction fine-tuning.

2. The air cushion with built-in inflatable device according to claim 1, characterized in that: The fabric layer is made of a composite material of TPU and high-elastic fabric, the base material layer is made of a composite material of TPU and tensile-resistant fabric, and the anti-slip layer is made of fabric with an anti-slip coating.

3. The air cushion with built-in inflatable device according to claim 1, characterized in that: The air cushion with built-in inflation device has three airbags selected on one side of the four sides as inflation airbags, transition airbags and deflation airbags respectively. The micro-pressure one-way inflation valve is installed in the inflation airbag, and the quick deflation valve is installed in the deflation airbag.

4. The air cushion with built-in inflatable device according to claim 3, characterized in that: A high-elastic memory sponge is arranged in the inflatable airbag, and the micro-pressure one-way inflation valve is arranged below the high-elastic memory sponge; a dedicated inflation airway is arranged between the inflatable airbag and the transition airbag, and the inflatable airbag is only connected to the transition airbag through an airway, and is not connected to other airbags; the transition airbag is connected to other adjacent airbags, and airflow airways are arranged between them, and the transition airbag, the deflated airbag and all airbags except the inflatable airbag are connected through multiple airflow airways.

5. The air cushion with built-in inflatable device according to claim 4, characterized in that: The ratio of the ventilation cross-sectional area of ​​the micro-pressure one-way inflation valve to the ventilation cross-sectional area of ​​the dedicated inflation airway is 5:1 or above.

6. The air cushion with built-in inflatable device according to claim 3, characterized in that: The quick deflation valve is an integrated structure, comprising a deflation valve body, a deflation valve core, and a deflation valve cover; the quick deflation valve body is welded on the base material layer, and its position is directly opposite to the center of the deflation airbag.

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