Pneumatic control multi-air-chamber synchronous inflation and deflation air model product

Abstract

The invention discloses an air model product for pneumatically controlling synchronous inflation and deflation of multiple air chambers, which realizes automatic control of synchronous inflation and deflation of the multiple air chambers through cooperative action of a one-way valve driven by air pressure difference. Comprising an inflation chamber, an air inlet channel and an exhaust channel, the inflation chamber is formed by arranging a plurality of closed air chambers, and each air chamber is correspondingly provided with a one-way air inlet valve and a one-way exhaust valve; the one-way air inlet valve is installed on the air inlet channel in a penetrating mode and communicates with an inner cavity of the air chamber. The one-way exhaust valve penetrates through the exhaust channel and is communicated with the inner cavity of the air chamber; at least one end of the air inlet channel and the exhaust channel is provided with an air tap which can be quickly butted with inflating or exhausting equipment, the air tap is provided with a sealing cover or a control valve, and the other end parts are of a closed structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of inflatable airform products, in particular to an airform product with pneumatic control of multiple air chambers for synchronous inflation and deflation. BACKGROUND

[0002] Inflatable airform products have been widely used in indoor and outdoor scenarios such as inflatable tents, inflatable mattresses, and water inflatable products due to their lightweight, easy folding, and convenient transportation. However, these products are prone to damage and pose safety hazards due to complex use environments and material limitations.

[0003] To improve reliability and prevent complete gas leakage caused by damage to a single air chamber, a multiple air chamber structure has emerged. This structure ensures that the remaining air chambers maintain an inflated state when one air chamber is damaged and leaks, significantly improving the safety of inflatable airform products. However, existing multiple air chamber airform products have obvious limitations in inflation and deflation operations. The mainstream uses a single air chamber inflation and deflation mode, which not only leads to low efficiency in deployment and storage, but also easily causes air chamber pressure imbalance, affecting the stability of the product structure and the reliability of the function.

[0004] To simplify the operation, existing technologies attempt two control schemes, but both have defects. One is an electromagnetic control valve, which can synchronize the control of multiple air chamber inflation and deflation operations, but has high cost, poor durability, and metal wires that severely damage the folding performance of the product, limiting its application. The second is a physical switch control, such as the scheme disclosed in invention patent CN115675730N (a multiple air chamber inflatable boat and its inflation and deflation method), which only adds independent controllable valves to each air chamber and then operates them one by one through the outer wall knob. This not only has a complex structure, but also is difficult to adapt to products with a large number of air chambers due to the long process, and fails to fundamentally solve the core contradiction between operation convenience and use safety. SUMMARY

[0005] The present application aims to provide an airform product with pneumatic control of multiple air chambers for synchronous inflation and deflation to address the deficiencies in the application of the background technology described above.

[0006] To achieve the above purpose, the following technical solutions are adopted:

[0007] A pneumatically controlled multi-chamber synchronous inflation and deflation inflatable model product includes an inflation chamber, an air inlet channel, and an exhaust channel. The inflation chamber is composed of multiple independent air chambers arranged in a row. Each air chamber is formed by its own chamber wall, or by a combination of the chamber wall, the air inlet channel wall, and the exhaust channel wall sharing a portion of the wall. The air chambers are not interconnected. Each air chamber is equipped with a one-way air inlet valve and a one-way air outlet valve. The one-way air inlet valve is installed through the air inlet channel wall, with its inlet end communicating with the inner cavity of the air inlet channel and its outlet end communicating with the inner cavity of the air chamber, allowing gas only to flow from the inner cavity of the air inlet channel to the outer cavity of the air outlet. The air chamber has unidirectional flow; the unidirectional exhaust valve is installed through the wall of the exhaust channel, with the inlet end connected to the air chamber cavity and the outlet end connected to the exhaust channel cavity, allowing only unidirectional flow of gas from the air chamber cavity to the exhaust channel cavity; the air inlet channel is a closed channel, with at least one end equipped with an air nozzle that can be quickly connected to an inflation device, the air nozzle being fitted with a sealing cap or control valve, and the remaining ends being a closed structure; the exhaust channel is a closed channel, with at least one end equipped with an air nozzle that can be quickly connected to an exhaust device, the air nozzle being fitted with a sealing cap or control valve, and the remaining ends being a closed structure.

[0008] As a further aspect of the present invention: both the one-way inlet valve and the one-way outlet valve are pneumatically controlled one-way valves, comprising a valve body, a valve core, and a connecting component. The valve body serves as the outer shell of the valve core and also serves as a fixed connecting component; the connecting component is used for the fixed connection between the valve body and the air chamber wall, the inlet channel wall, or the outlet channel wall; the valve core is a valve device that opens based on the pressure difference between the inlet and outlet ends.

[0009] Preferably, the opening pressure of the one-way exhaust valve is equal to the normal operating pressure of the air chamber. This can prevent the valve from opening prematurely, which would prevent the air chamber from reaching its rated working pressure. On the other hand, it can ensure that the valve opens in response to the instant of overpressure in the air chamber, thus taking into account the pressure relief function and ensuring the safe operation of the air chamber.

[0010] As a further embodiment of the present invention, the intake passage and the exhaust passage can be shared.

[0011] As a further embodiment of the present invention, the air inlet channel and the air outlet channel can be replaced by one or two air chambers in a multi-chamber inflatable product that can be radially connected to other air chambers.

[0012] Preferably, the air intake and exhaust channels should be flexible, bend-resistant, and anti-aging, while also having good high-pressure resistance. In particular, the exhaust channel should be prevented from collapsing due to insufficient structural strength caused by plastic deformation during air extraction due to the pressure difference between the inside and outside, which would affect the air extraction effect. If the material cannot meet the high-pressure resistance requirements, a support frame can be installed inside the exhaust channel cavity to prevent deformation and collapse.

[0013] Furthermore: the support frame should be flexible and bend-resistant, and able to resist deformation that occurs during exhaust channel suction operation; the support frame does not need to fill the entire exhaust channel, but only needs to ensure good ventilation of the exhaust channel.

[0014] The specific working principle is as follows:

[0015] During inflation, open the air inlet channel sealing cover or control valve, connect the inflation device to the air inlet channel nozzle, and start the device to inflate the sealed air inlet channel cavity. The air pressure inside the channel gradually increases during inflation. When the pressure difference between the air inlet channel and the air chamber exceeds the opening pressure threshold of the one-way air inlet valve, the valve automatically opens, and airflow is simultaneously injected into all air chambers; at this time, the one-way exhaust valve remains closed because the pressure difference between the two ends does not meet the opening condition. After the air chambers are inflated to meet the usage requirements, stop the inflation operation. The air pressure inside the air inlet channel then decreases, and the one-way air inlet valve automatically closes as the pressure difference disappears, completing the inflation process.

[0016] During evacuation, open the exhaust channel sealing cover or control valve, connect the evacuation device to the exhaust channel nozzle, and start the device to evacuate air from the sealed exhaust channel. The air pressure inside the channel gradually decreases, creating a negative pressure. When the pressure difference between the air chamber and the exhaust channel exceeds the opening pressure threshold of the one-way exhaust valve, the valve automatically opens, and the gas in each air chamber is simultaneously discharged into the exhaust channel and extracted. At this time, the one-way inlet valve remains closed due to the reverse pressure difference. After the gas in the air chambers is completely evacuated, turn off the evacuation device. The one-way exhaust valve automatically closes due to the disappearance of the pressure difference, and the evacuation process is complete.

[0017] In summary, the present invention has the following beneficial technical effects:

[0018] The above process utilizes the coordinated action of one-way valves driven by air pressure difference to achieve automated control of simultaneous inflation and deflation of multiple air chambers. No manual intervention in valve status is required, ensuring ease of operation while avoiding pressure imbalances caused by operating each chamber individually. This simplifies product structure design, enhances product durability, and balances cost control with foldable storage. Theoretically, this invention can simultaneously control the inflation and deflation of countless independent air chambers. The increased number of air chambers not only significantly improves the safety of multi-chamber inflatable products but also allows for the design of multi-chamber inflatable products with more diverse functions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Example 1.

[0020] Figure 2 A front sectional view of the connection between the one-way intake valve and the intake passage wall.

[0021] Figure 3 A schematic diagram of the intake manifold nozzle and sealing cap.

[0022] Figure 4 A sectional view of an exhaust channel with a support frame.

[0023] Figure 5 Top cross-sectional view of Example 2

[0024] In the diagram: Inflation chamber 1, air chamber 2, air chamber wall 201, air inlet channel 41, air inlet channel nozzle 411, air inlet channel sealing cover or control valve 412, air inlet channel wall 202, exhaust channel 42, exhaust channel nozzle 421, exhaust channel sealing cover or control valve 422, exhaust channel wall 203, one-way air inlet valve 31, one-way air inlet valve body 311, one-way air inlet valve core 312, one-way air inlet valve connector 313, one-way exhaust valve 32, one-way exhaust valve body 321, one-way exhaust valve core 322, one-way exhaust valve connector 323, support frame 423, common channel (43), multi-functional nozzle (431), common channel sealing cover (432) Detailed Implementation

[0025] The inflatable model product with pneumatic control for synchronous inflation and deflation of multiple air chambers disclosed in this invention has its core inventive point in achieving coordinated inflation and deflation of multiple air chambers through a combination of "sealed channel (or alternative structure) + pneumatic one-way valve," thus solving the problems of cumbersome operation and insufficient safety of traditional products. The following detailed description, in conjunction with Figures 1-5, uses two typical embodiments. Each embodiment corresponds to the technical features of claims 1-7, differing only in channel shape and structural layout, while maintaining the same core pneumatic control logic. The described embodiments are one example among many application scenarios of this invention, not all embodiments.

[0026] Example 1: External air chamber replaces dual-channel structure (Figures 1-4)

[0027] This embodiment is an outdoor inflatable tent (combined with attachments). Figure 1 The external channel facilitates maintenance and can also serve as a reinforcement structure for the product's edges. This corresponds to the core definition of claim 1 and the detailed features of claims 2, 3, 5, 6, and 7. The inflatable product is mainly composed of three core parts: an inflatable chamber (1), an air inlet channel (41), and an exhaust channel (42). Each part is made of flexible sealing material, taking into account both structural strength and folding and storage performance. Among them, the inflatable chamber (1) is the main load-bearing structure of the product. The air inlet channel (41) is arranged along the left edge of the inflatable chamber (1), and the exhaust channel (42) is arranged along the right edge of the inflatable chamber (1). Both are long, sealed channels that extend parallel to the inflatable chamber (1) to achieve centralized airflow control of multiple air chambers.

[0028] Detailed structure and working principle of each component:

[0029] 1. Inflatable chamber (1)

[0030] The inflation chamber (1) is composed of multiple parallel air chambers (2) connected by heat sealing and other processes. The top of the air chamber (2) is formed by the air inlet channel wall (202), the bottom by the air outlet channel wall (203), and the rest by the air chamber wall (201). The junction of the air chamber wall (201) with the air inlet channel wall (202) and the air outlet channel wall (203) is sealed by heat sealing and other processes to form a relatively sealed air chamber (2). The air chamber wall (201) and the channel wall (202 / 203) are made of a flexible material with high toughness and tear resistance to ensure that the sealing performance of the remaining air chambers is not affected when a single air chamber is damaged, providing basic safety redundancy for the product.

[0031] 2. One-way intake valve (31) and one-way exhaust valve (32) (in conjunction with appendix) Figure 2 )

[0032] Each air chamber (2) is equipped with a one-way air inlet valve (31) and a one-way air outlet valve (32). Both types of valves are pneumatically controlled one-way valves. In order to meet the core characteristics of lightweight and easy-to-fold inflatable products, a compact design is adopted while ensuring the air inlet and outlet volume requirements. The specific structure is as follows:

[0033] Overall structure: Includes valve body (311 / 321) and valve core (312 / 322). The valve body has a rounded, edgeless design to prevent wear and damage to the air chamber wall (201), air intake channel wall (202), and exhaust channel wall (203) when the product is folded for storage; the valve body (311 / 321) serves as both the mounting shell for the valve core and a fixing connector (313 / 323).

[0034] Valve core (312 / 322): The opening structure is driven by the pressure difference between the inlet and outlet ends (such as a spring-lift one-way valve core), and it must have excellent sealing performance. Among them, the one-way inlet valve core (312) is the core control unit for the inflation operation of the inlet channel (41) and the air chamber (2); the one-way exhaust valve core (322) is the core control unit for the exhaust operation of the exhaust channel (42) and the air chamber (2).

[0035] Opening pressure design: The opening pressure value of the one-way exhaust valve (32) is set to be equal to the normal operating air pressure value of the air chamber (2). On the one hand, it can prevent the valve from opening in advance, causing the air chamber (2) to fail to reach the rated working pressure. On the other hand, it can ensure that the valve responds and opens instantly when the air chamber (2) is overpressured, taking into account the pressure relief function and ensuring the safe operation of the air chamber.

[0036] 3. Connectors (313 / 323)

[0037] The valve (31 / 32) is heat-sealed and fixed to the channel wall (202 / 203) at both ends of the air chamber (2) by the connector (313 / 323). The material must meet two characteristics: first, it must have flexible and bend-resistant properties to meet the product folding and storage requirements; second, it must be a material that can form a stable and sealed connection with the channel wall (202 / 203) by heat sealing or other means (preferably flexible materials such as thermoplastic rubber and TPU).

[0038] Installation method: (refer to the attached document) Figure 2 One-way inlet valve (31) is installed through one-way inlet valve connector (313) on the inlet channel wall (202) forming the top of the air chamber (2). The inlet end is connected to the inner cavity of the inlet channel (41), and the outlet end is connected to the inner cavity of the air chamber (2). Gas is allowed to flow unidirectionally from the inner cavity of the inlet channel (41) to the inner cavity of the air chamber (2). One-way exhaust valve (32) is installed through one-way exhaust valve connector (323) on the exhaust channel wall (203) forming the bottom of the air chamber (2). The inlet end is connected to the inner cavity of the air chamber (2), and the outlet end is connected to the inner cavity of the exhaust channel (42). Gas is allowed to flow unidirectionally from the inner cavity of the air chamber (2) to the inner cavity of the exhaust channel (42). The preferred connection method is heat sealing to ensure no air leakage between the channel wall (202 / 203) and the valve (31 / 32) connector. Other equivalent sealing connection methods such as bonding and pressing can also be used.

[0039] 4. Air intake passage (41)

[0040] The intake passage is a long, sealed channel. Its structure, connection relationships, and functions are as follows (see attached diagram). Figure 1 Appendix Figure 3 ):

[0041] End structure: One axial end is fitted with an air nozzle (411) by heat sealing or other sealing methods. The air nozzle (411) adopts a standard quick-connect structure and can be quickly connected with inflation equipment such as air pumps. The air nozzle (411) is equipped with a sealing cover or control valve (412), and the other axial end is a sealed structure.

[0042] Core function and working principle: It serves as the centralized air intake channel for each air chamber (2). When the air nozzle (411) is connected to the inflation device, the air pressure in the sealed air intake channel (41) gradually increases. When the air pressure difference between the air intake channel (41) and the air chamber (2) is greater than the opening pressure of the one-way air intake valve (31), the valve opens automatically, and the airflow enters each air chamber (2) synchronously to complete the inflation. At this time, the one-way exhaust valve (32) is closed because the pressure difference between the two ends has not reached the opening threshold and does not participate in the work.

[0043] The function of the sealing cover or control valve (412) is: ① to protect the internal structure of the air intake channel (41) and prevent foreign objects from entering and damaging the air intake channel wall (202) and the one-way air intake valve (31); ② in this embodiment, when the air intake channel (41) is used as the base part of the air model product, the sealed channel ensures that the internal air pressure reaches the strength required for normal use of the product, thereby improving the load-bearing stability of the base.

[0044] 5. Exhaust passage (42)

[0045] The exhaust passage (42) and the intake passage (41) are structurally symmetrical, and their detailed design and functions are as follows (refer to Figure 3 and Appendix 4). Figure 4 ):

[0046] End structure: One axial end is fitted with an air nozzle (421) by heat sealing or other means. The air nozzle (421) adopts a standard quick-connect design and can be quickly connected to air pumps and other air extraction equipment. The air nozzle (421) is equipped with a sealing cap or control valve (422). The other axial end is in a closed state.

[0047] Core function and working principle: It serves as a centralized exhaust channel for each air chamber (2). When the air nozzle (421) is connected to the air extraction device, the air pressure in the sealed exhaust channel (42) gradually decreases. When the air pressure difference between the air chamber (2) and the exhaust channel (42) is greater than the opening pressure of the one-way exhaust valve (32), the valve opens automatically, and the gas in each air chamber (2) is simultaneously discharged into the exhaust channel (42) and discharged. At this time, the one-way air inlet valve (31) remains closed due to insufficient pressure difference and does not participate in the operation.

[0048] The functions of the sealing cover or control valve (422) are: ① To protect the internal structure of the exhaust channel (42) and prevent foreign objects from entering and damaging the exhaust channel wall (203) and the one-way exhaust valve (32); ② To achieve pressure regulation under overpressure conditions of the air chamber: When it is necessary to improve the strength of the air model structure (such as the inflatable tent to cope with strong winds), close the sealing cover or control valve (422) to seal the exhaust channel (42). When the air chamber (2) is overpressured, the gas in the air chamber (2) will push the one-way exhaust valve (32) to open and enter the exhaust channel (42). As the air pressure in the exhaust channel (42) increases, the one-way exhaust valve (32) will close again due to the decrease in pressure difference. This cycle repeats until each air chamber (2) reaches the preset pressure; ③ In this embodiment, when the exhaust channel (42) is used as the product base, the sealing ensures that the internal air pressure meets the load-bearing strength requirements.

[0049] Deformation-resistant design (in conjunction with attached) Figure 4The intake channel (41) and exhaust channel (42) must both be flexible, bend-resistant, anti-aging, and high-pressure resistant. In particular, the exhaust channel (42) needs to withstand the pressure difference between the inside and outside during the suction operation, which is prone to deformation and collapse. Therefore, special optimization is required. In this embodiment, the exhaust channel (42) and the air chamber (2) are made of the same material (with limited high-pressure resistance). Therefore, a support frame (423) is installed in its cavity to ensure that the exhaust channel (42) can resist the negative pressure deformation during suction. The support frame (423) is preferably made of spring-shaped flexible hoses such as TPU, which are flexible, bend-resistant, and lightweight. The part near the one-way exhaust valve (32) can be fixed to the exhaust channel wall (203) by bonding or heat fusion to avoid the support frame (423) blocking the exhaust port of the one-way exhaust valve (32). The core function of the support frame (423) is to ensure that the exhaust channel (42) remains unobstructed and to ensure exhaust efficiency.

[0050] II. Example 2: Shared intake and exhaust channel structure (corresponding to the core definition of claim 1 and the detailed features of claims 2, 3, 4, and 6)

[0051] This embodiment is a multi-chamber swimming ring (in conjunction with the attached...). Figure 5 The inflatable chamber (1) is the main structure of the ring-shaped swimming ring, consisting of 9 independent air chambers (2) evenly arranged along the circumference. Each air chamber is a fan-shaped structure, and the air chambers are not interconnected. The shared channel (43) replaces the independent air intake channel (41) and exhaust channel (42). The shared channel (43) is made of TPU tubing, which not only has good high pressure resistance, but also excellent folding resistance and lightness. The shared channel (43) is arranged along the inner circumferential edge of the inflatable chamber (1). The junction between the shared channel wall and the air chamber wall (201) that constitutes the air chamber is sealed by high-frequency heat sealing process to ensure that the air chamber forms a leak-free, sealed buoyancy unit.

[0052] 1. Shared channel and valve adaptation design

[0053] 1). Valve layout: Each independent air chamber (2) is equipped with a set of one-way inlet valve (31) and one-way exhaust valve (32). Both types of valves are pneumatically controlled one-way valves, which are evenly arranged along the radial side wall of the common channel (43) and correspond one-to-one with the air chambers. They are fixed to the outer wall of the channel by heat sealing through TPU material connectors (313 / 323).

[0054] Arrangement: The one-way inlet valve (31) is located on the upper half of the channel, and the one-way exhaust valve (32) is located on the lower half of the channel. The two are offset by a certain distance in the radial direction to avoid the airflow forming turbulence in the channel and ensure the airflow delivery efficiency.

[0055] 2) Air nozzle design: A multi-functional air nozzle (431) compatible with both inflation and deflation devices is installed at one end of the common channel (43). The air nozzle is a straight-tube double-adapter structure. The air nozzle is equipped with a threaded sealing cap (432). The other end of the common channel (43) adopts an injection-molded integrated sealing structure with no leakage points. When the sealing cap (432) is closed, the channel (43) forms a sealed cavity.

[0056] 2. Inflation and deflation working principle

[0057] 1) Inflation process: Remove the sealing cap (432) of the multi-functional air nozzle (431) and connect the quick connector of the inflation device to the air nozzle; start the inflation device, and the high-pressure airflow enters the common channel (43). Because the channel is sealed, the internal air pressure continues to rise; when the air pressure difference between the common channel (43) and the air chamber (2) reaches the opening pressure of the one-way air inlet valve (31), the one-way air inlet valve (31) opens automatically. At this time, the one-way exhaust valve (32) remains closed due to the reverse pressure, and the airflow enters the 9 air chambers simultaneously; when the working air requirement of the air chamber (2) is met, turn off the inflation device and tighten the sealing cap (432) to complete the inflation.

[0058] 2). Exhaust process: This embodiment supports two modes: equipment suction and manual press exhaust, which are suitable for different usage scenarios: ① Equipment suction mode: Remove the sealing cover (432) and connect the suction device to the air nozzle (431); start the suction device, and the air pressure in the common channel (43) gradually decreases. When the air pressure difference between the air chamber (2) and the common channel reaches the opening pressure of the one-way exhaust valve (32), the one-way exhaust valve (32) will open automatically. At this time, the one-way air inlet valve (31) will remain closed due to the reverse pressure. The gas in each air chamber (2) will be discharged into the common channel (43) and discharged by the suction device. After the gas in the air chamber (2) is emptied, the suction device will be turned off and the sealing cover will be tightened to complete the exhaust. ② Manual press exhaust mode (no equipment scene adaptation): Remove the sealing cover (432) to connect the common channel (43) with the atmosphere; press each air chamber (2) in sequence along the circumference by hand. The air pressure in the air chamber increases due to compression. When the air pressure difference formed with the common channel (atmospheric pressure) exceeds the opening pressure of the one-way exhaust valve (32), the one-way exhaust valve (32) will open automatically. At this time, the one-way air inlet valve (31) will remain closed due to reverse pressure. The gas in the air chamber (2) will be discharged into the common channel (43) through the valve and released to the atmosphere. After all the air chambers are pressed, the gas will be exhausted, the one-way exhaust valve (32) will close automatically, tighten the sealing cover, and the exhaust will be completed.

[0059] In summary, the pneumatically controlled multi-chamber synchronous inflation and deflation air model product disclosed in this invention addresses the core pain points of existing multi-chamber inflation products, such as cumbersome operation, insufficient safety, structural redundancy, and cost imbalance. It achieves centralized synchronous inflation and deflation of multiple chambers through pneumatic control logic.

[0060] The above are preferred embodiments of the present invention and are not intended to limit the scope of protection of this application. According to relevant provisions of the Patent Law, any equivalent substitutions, structural improvements, principle derivations, or shape optimizations made based on the technical solutions, structural principles, or design concepts of this application shall be deemed to fall within the scope of protection of this application.

Claims

1. A pneumatically controlled multi-chamber synchronous inflation and deflation inflatable product, comprising an inflation chamber (1), an air inlet channel (41), and an exhaust channel (42), characterized in that: The air chamber (1) is composed of multiple independent air chambers (2). Each air chamber (2) is formed by an air chamber wall (201) alone, or by a combination of the air chamber wall (201) and the air inlet channel wall (202) and the exhaust channel wall (203) sharing a part of the wall. Each air chamber (2) is not interconnected. Each air chamber (2) is equipped with a one-way air intake valve (31) and a one-way air exhaust valve (32); the one-way air intake valve (31) is installed through the air intake channel wall (202), with the air intake end connected to the inner cavity of the air intake channel (41) and the air exhaust end connected to the inner cavity of the air chamber (2); the one-way air exhaust valve (32) is installed through the air exhaust channel wall (203), with the air intake end connected to the inner cavity of the air chamber (2) and the air exhaust end connected to the inner cavity of the exhaust channel (42); The air intake channel (41) is a closed channel, at least one end of which is equipped with an air nozzle (411) that can be quickly connected to the inflation device. The air nozzle (411) is equipped with a sealing cap or a control valve (412), and the other ends are closed structures. The exhaust channel (42) is a closed channel, with at least one end equipped with a nozzle (421) that can be quickly connected to the air extraction equipment. The nozzle (421) is equipped with a sealing cap or control valve (422), and the other ends are closed structures.

2. The pneumatically controlled multi-chamber synchronous inflation and deflation inflatable product according to claim 1, characterized in that: The one-way inlet valve (31) and one-way outlet valve (32) are both pneumatically controlled one-way valves, including valve body (311 / 321), valve core (312 / 322) and connecting parts (313 / 323).

3. The pneumatically controlled multi-chamber synchronous inflation and deflation inflatable product according to claims 1 and 2, characterized in that: The opening pressure of the one-way exhaust valve (32) is equal to the normal operating pressure of the air chamber (2).

4. The pneumatically controlled multi-chamber synchronous inflation and deflation inflatable product according to claim 1, characterized in that: The intake passage (41) and exhaust passage (42) can be shared.

5. The pneumatically controlled multi-chamber synchronous inflation and deflation inflatable product according to claims 1 and 4, characterized in that: The air intake channel (41) and exhaust channel (42) can also be replaced by one or two air chambers (2) in a multi-chamber air model product that can be radially connected to other air chambers.

6. A pneumatically controlled multi-chamber synchronous inflation and deflation inflatable product according to claims 1, 4, and 5, characterized in that: The air intake channel (41) and the exhaust channel (42) should be flexible, bend-resistant and anti-aging, and should also have good high pressure resistance. In particular, the exhaust channel (42) should be prevented from deforming and collapsing due to insufficient structural strength during the operation of the air extraction due to the pressure difference between the inside and outside, which would affect the air extraction effect. If the material cannot meet the high pressure resistance, a support frame (423) can be installed in the cavity of the exhaust channel (42) to prevent it from deforming and collapsing.

7. A pneumatically controlled multi-chamber synchronous inflation and deflation inflatable product according to claims 1, 4, 5, and 6, characterized in that: The support frame (423) should be lightweight, flexible and bend-resistant, and able to resist deformation during exhaust channel suction operation; the support frame (423) does not need to fill the entire cavity of the exhaust channel (42), but can ensure that the exhaust channel (42) has good ventilation.

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