Air pressure self-adaptive structure of intelligent response type breathable film

Abstract

The invention belongs to the technical field of breathable films, and discloses an intelligent response type breathable film air pressure self-adaption structure which comprises an air conveying pipe, a sealing cover is arranged at the top of the air conveying pipe, a breathable film is arranged in the sealing cover, an installation mechanism is arranged at the top of the air conveying pipe, and the installation mechanism comprises an installation assembly and a protection assembly. By arranging the three-layer composite breathable film structure, the functions of protection, response and sealing are integrated, and intelligent and self-adaptive response to air pressure changes is achieved by combining macroscopic deformation of the protection layer with microcosmic adjustment of the response layer. According to the mounting assembly, the sealing cover is quickly clamped and unlocked through cooperation of an exquisite inclined plane mechanism (a telescopic inclined plane block, an inclined plane sliding sleeve and a lower inclined plane block) and a spring, and the disassembly and assembly process is greatly simplified. According to the protection assembly, flexible opening and closing and stable supporting of a protection frame are achieved through a sliding frame, the protection frame and a connecting rod mechanism, and physical protection in a normal state and convenience during overhauling are both considered.

Description

Technical Field

[0001] This application relates to the field of breathable membrane technology, and in particular to a pressure-adaptive structure for an intelligent responsive breathable membrane. Background Technology

[0002] Breathable membranes are functional components widely used in electronic devices, automobiles, aerospace and other fields. Their core function is to allow gas molecules to pass through while effectively blocking liquid water, dust and other pollutants, thereby achieving pressure balance and protection of internal components. Traditional breathable membranes mainly rely on the microporous structure of materials such as expanded polytetrafluoroethylene to achieve physical air permeability, and their air permeability is basically fixed after the material is formed.

[0003] Existing breathable membranes have significant limitations. First, their permeability cannot self-adjust according to dynamic changes in ambient air pressure. When the pressure difference between the inside and outside of the system increases sharply, the membrane with a fixed permeability cannot respond quickly to restrict airflow, which may cause damage to internal precision components due to pressure shock or loss of effective sealing in high-flow-rate scenarios. Second, existing breathable membrane components are mostly installed and maintained using adhesive or simple snap-fit ​​methods, which are not only cumbersome to disassemble and reassemble and inefficient to replace, but also difficult to guarantee the sealing reliability after repeated installation. In addition, most existing structures lack dedicated physical protection for the breathable membrane body, leaving the membrane surface directly exposed to the external environment, making it extremely susceptible to damage from accidental bumps, tool impacts, or debris accumulation, affecting the service life and reliability of the entire system. Summary of the Invention

[0004] One objective of this application is to provide a pressure-adaptive structure for a smart responsive breathable membrane.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a pressure-adaptive structure for an intelligent responsive breathable membrane, comprising an air supply pipe, a sealing cover at the top of the air supply pipe, a breathable membrane inside the sealing cover, and an installation mechanism at the top of the air supply pipe, the installation mechanism comprising an installation component and a protective component, the installation component and the protective component working together; the breathable membrane is a three-layer structure, consisting of a protective layer, a responsive layer, and a sealing layer from top to bottom; the protective layer is made of thermoplastic polyurethane with a thickness of 50-150 micrometers; its function is to provide the main structural rigidity and... Mechanical protection and serving as the main body for macroscopic deformation, the responsive layer is made of perfluorosulfonic acid resin or silicone rubber with a microporous structure, with a thickness of 10-50 micrometers. Its function is to respond to changes in air pressure through the material's own microporous structure or molecular chain gaps. When the air pressure difference increases, its microscopic air permeability channels are compressed or closed, resulting in a decrease in gas permeability and achieving preliminary and fine air permeability regulation. The sealing layer is made of soft silicone rubber with a thickness of 100-300 micrometers. Its function is to tightly fit with the sealing cover under the drive of the protective layer when the air pressure difference reaches a critical threshold, forming an airtight seal.

[0006] Preferably, the installation assembly includes a rectangular slot located at the top of the gas supply pipe. The inner wall of the rectangular slot has symmetrically formed extension grooves on both sides. The gas supply pipe has symmetrically formed telescopic grooves on both sides of its interior. A fixing post is fixedly connected to one side of the inner wall of each telescopic groove, and a spring is fixedly connected to the outer side of the fixing post. A telescopic inclined block is fixedly connected to the other end of the spring. The telescopic inclined block extends into the extension groove and is slidably connected to the gas supply pipe. Insert plates are symmetrically fixedly connected to both sides of the bottom of the sealing cover. A connecting plate is fixedly connected to the bottom of each insert plate. A lower inclined block is fixedly connected to the bottom of each connecting plate. A slidable sliding sleeve is slidably connected to the outer side of the connecting plate. The telescopic inclined block, the slidable sliding sleeve, and the lower inclined block cooperate with each other.

[0007] Preferably, the protective assembly includes sliding frames, which are symmetrically and fixedly connected to the top of the gas supply pipe. A protective frame is rotatably connected between the two sliding frames. Protective rods are equidistantly and fixedly connected inside the protective frame. Sliding grooves are provided inside the two sliding frames. Sliding columns are slidably connected inside the two sliding grooves. Side support rods are rotatably connected to the outer sides of the two sliding columns. Rotating blocks are symmetrically and fixedly connected to the top of the protective frame. The other ends of the rotating blocks and the side support rods are rotatably connected. Support blocks are symmetrically and fixedly connected to one side of the bottom of the protective frame.

[0008] Preferably, a sealing ring is fixedly connected to the inner wall of the rectangular slot, the top of the sealing ring is inclined, and the sealing ring and the sealing cover cooperate to form a sealing structure.

[0009] Preferably, the protective frame is made of a rigid material and its outer surface is coated with an anti-corrosion coating; the tilt direction of the protective rod is configured to effectively block straight objects falling from above, while providing a channel for lateral airflow to minimize the impact on the ventilation function.

[0010] Preferably, the contact surfaces of the telescopic inclined block and the lower inclined block, as well as the contact surfaces of the inclined sliding sleeve and the telescopic inclined block, are treated with a low coefficient of friction or have embedded sliding pieces made of self-lubricating material to ensure smooth installation and disassembly.

[0011] Preferably, the air inlet end of the gas supply pipe is connected to a Venturi tube section, and the throat of the Venturi tube section is connected to the internal cavity of the sealing cover through a branch pipe; when the airflow velocity in the gas supply pipe increases, the negative pressure generated at the throat of the Venturi tube section acts on the breathable membrane through the branch pipe, thereby helping to enhance its sealing effect.

[0012] Preferably, a limiting structure can be installed on the sliding frame. When the protective frame is flipped to the fully open position, the support block abuts against the limiting structure, so that the protective frame remains in a horizontally unfolded state.

[0013] Preferably, the length of the side support rod is configured such that when the sliding column slides to the end of the sliding groove, the protective frame is supported at an obtuse angle to the top plane of the gas pipe, forming a stable semi-open state.

[0014] Compared with the prior art, the beneficial effects of this application are as follows:

[0015] (1) The three-layer composite breathable membrane structure integrates protection, response and sealing functions. By combining the macroscopic deformation of the protective layer with the microscopic adjustment of the response layer, it realizes intelligent and adaptive response to air pressure changes, fundamentally improving the functionality of the product. The installation component realizes quick snap-fit ​​and unlocking of the sealing cover through the cooperation of the ingenious inclined mechanism (telescopic inclined block, inclined sliding sleeve, lower inclined block) and spring, which greatly simplifies the disassembly and assembly process. The protective component realizes flexible opening and closing and stable support of the protective frame through the sliding frame, protective frame and linkage mechanism (sliding column, side support rod, rotating block), taking into account both physical protection under normal conditions and convenience during maintenance.

[0016] (2) The inclined sealing ring and low-friction treatment of the contact surface improve sealing reliability and operational smoothness, respectively. The limitation on the material, coating and angle of the protective frame ensures both protection and breathability. The venturi effect is used to passively enhance the seal. Through the precise configuration of the limiting structure and the length of the side support rod, reliable support for both horizontal and inclined stable states of the protective frame is achieved, meeting the usage requirements in different scenarios. Together, they form an efficient, reliable and user-friendly complete system. Attached Figure Description

[0017] Figure 1 This is a three-dimensional exploded view of the present invention.

[0018] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0019] Figure 3 This is a three-dimensional cross-sectional schematic diagram of the present invention.

[0020] Figure 4 This is a stereoscopic rear view diagram of the present invention.

[0021] Figure 5 This is a three-dimensional upward view of the present invention.

[0022] Figure 6 For the present invention Figure 3 A magnified diagram of point A.

[0023] Figure 7 This is a three-dimensional cross-sectional schematic diagram of the gas pipeline of the present invention.

[0024] Figure 8 This is a frontal cross-sectional view of the gas pipeline of the present invention.

[0025] Figure 9 This is a three-dimensional schematic diagram of the mounting bracket of the present invention.

[0026] Figure 10 This is a three-dimensional schematic diagram of the protective component of the present invention.

[0027] In the diagram: 1. Gas supply pipe; 2. Sealing cover; 3. Breathable membrane; 31. Rectangular slot; 32. Extension slot; 33. Telescopic slot; 34. Fixed column; 35. Spring; 36. Telescopic inclined block; 37. Insert plate; 38. Connecting plate; 39. Inclined sliding sleeve; 310. Lower inclined block; 41. Sliding frame; 42. Protective frame; 43. Protective rod; 44. Sliding groove; 45. Sliding column; 46. Side support rod; 47. Rotating block; 48. Support block; 5. Sealing ring. Detailed Implementation

[0028] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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 should not be construed as limiting the specific protection scope of this application.

[0030] It should be noted that the terms "first" and "second" in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. One preferred embodiment of this application, such as Figures 1 to 10As shown, a pressure-adaptive structure of an intelligent responsive breathable membrane includes an air supply pipe 1, a sealing cover 2 at the top of the air supply pipe 1, and a breathable membrane 3 inside the sealing cover 2. An installation mechanism is located at the top of the air supply pipe 1, comprising an installation component and a protective component, which work together. The breathable membrane 3 has three layers: a protective layer, a responsive layer, and a sealing layer, arranged from top to bottom. The protective layer is made of thermoplastic polyurethane with a thickness of 50-150 micrometers; its function is to provide the main structural rigidity and mechanical protection for the overall membrane structure and to act as the main body for macroscopic deformation. The responsive layer is made of perfluorosulfonic acid resin or silicone rubber with a microporous structure, with a thickness of 10-50 micrometers; its function is to respond to pressure changes through the material's own microporous structure or molecular chain gaps. When the pressure difference increases, its microscopic breathable channels are compressed or closed, leading to a decrease in gas permeability and achieving preliminary and fine-tuned breathability adjustment. The sealing layer is made of soft silicone rubber with a thickness of 100-50 micrometers. 300 micrometers; its function is to tightly fit with the sealing cover 2 under the drive of the protective layer when the air pressure difference reaches the critical threshold, forming an airtight seal. The installation component includes a rectangular slot 31, which is opened at the top of the gas supply pipe 1. The inner wall of the rectangular slot 31 has symmetrical extension grooves 32 on both sides. The inner walls of the gas supply pipe 1 have symmetrical telescopic grooves 33 on both sides. A fixed post 34 is fixedly connected to one side of the inner wall of the telescopic groove 33. A spring 35 is fixedly connected to the outer side of the fixed post 34. A telescopic inclined block 36 is fixedly connected to the other end of the spring 35. The telescopic inclined block 36 extends into the interior of the extension groove 32 and is slidably connected to the gas supply pipe 1. Insert plates 37 are symmetrically fixedly connected to both sides of the bottom of the sealing cover 2. A connecting plate 38 is fixedly connected to the bottom of the insert plate 37. A lower inclined block 310 is fixedly connected to the bottom of the connecting plate 38. An inclined sliding sleeve 39 is slidably connected to the outer side of the connecting plate 38. The telescopic inclined block 36, the inclined sliding sleeve 39 and the lower inclined block 310 are used in cooperation with each other. The protective assembly includes sliding frames 41, which are symmetrically and fixedly connected to the top of the gas supply pipe 1. A protective frame 42 is rotatably connected between the two sliding frames 41. Protective rods 43 are equidistantly fixedly connected inside the protective frame 42. Each of the two sliding frames 41 has a sliding groove 44 inside, and a sliding column 45 is slidably connected inside each of the two sliding grooves 44. Side support rods 46 are rotatably connected to the outside of each of the two sliding columns 45. A rotating block 47 is symmetrically and fixedly connected to the top of the protective frame 42. The other end of the rotating block 47 and the side support rod 46 are rotatably connected. A support block 48 is symmetrically and fixedly connected to one side of the bottom of the protective frame 42. By setting a three-layer composite breathable membrane 3 composed of a thermoplastic polyurethane protective layer, a perfluorosulfonic acid resin or microporous silicone rubber responsive layer, and a soft silicone rubber sealing layer, the air pressure adaptive function is realized. The protective layer provides structural rigidity and acts as the main body for deformation. The responsive layer achieves fine adjustment by changing the air permeability under pressure difference through its microstructure. The sealing layer adheres to the sealing cover 2 under high pressure difference to form a final seal, thereby intelligently balancing and protecting the internal pressure of the system.The installation assembly, through the engagement of the insert plate 37, connecting plate 38, lower inclined block 310, inclined sliding sleeve 39, and telescopic inclined block 36 on the air supply pipe 1, enables the quick snap-fit ​​installation and unlocking / removal of the sealing cover 2 under the elastic force of the spring 35, greatly simplifying the maintenance process. The protective assembly, through the sliding frame 41, the rotatable protective frame 42, and the linkage mechanism composed of sliding column 45, side support rod 46, and rotating block 47, allows the protective frame 42 to be flipped open for maintenance and stably supported at a specific angle by the support block 48, providing adjustable physical protection for the breathable membrane 3 below.

[0031] One preferred embodiment of this application, such as Figures 1 to 10 As shown, a sealing ring 5 is fixedly connected to the inner wall of the rectangular slot 31. The top of the sealing ring 5 is inclined, and the sealing ring 5 and the sealing cover 2 cooperate to form a sealing structure. The sealing ring 5 with its inclined top is set in the rectangular slot 31, so that it forms an inclined contact seal with the bottom of the sealing cover 2, which effectively improves the sealing reliability of the joint and prevents gas from leaking from the interface.

[0032] One preferred embodiment of this application, such as Figures 1 to 10 The protective frame 42 shown is made of rigid material and its outer surface is coated with an anti-corrosion coating. The inclined direction of the protective rod 43 is configured to effectively block vertically falling objects while providing a channel for lateral airflow to minimize the impact on the ventilation function. The protective frame 42 is made of rigid material and coated with an anti-corrosion coating to ensure its mechanical protection capability and durability; the inclined protective rod 43 ensures that it blocks vertically falling objects and protects the breathable membrane 3 while minimizing its obstruction to lateral airflow.

[0033] One preferred embodiment of this application, such as Figures 1 to 10 The contact surfaces of the telescopic inclined block 36 and the lower inclined block 310, as well as the contact surfaces of the inclined sliding sleeve 39 and the telescopic inclined block 36, are all treated with a low coefficient of friction or have self-lubricating pads embedded to ensure smooth installation and disassembly. The low-friction treatment or the addition of self-lubricating pads to the contact surfaces of the telescopic inclined block 36, the lower inclined block 310, and the inclined sliding sleeve 39 effectively reduces the movement resistance between components, making installation and disassembly operations smoother and less strenuous, thus improving the user experience.

[0034] One preferred embodiment of this application, such as Figures 1 to 10As shown, the inlet end of the gas supply pipe 1 is connected to a Venturi tube section, and the throat of the Venturi tube section is connected to the internal cavity of the sealing cover 2 through a branch pipe. When the airflow velocity in the gas supply pipe 1 increases, the negative pressure generated at the throat of the Venturi tube section acts on the breathable membrane 3 through the branch pipe, helping to enhance its sealing effect. By setting a Venturi tube section at the inlet end of the gas supply pipe 1 and using a branch pipe to guide the negative pressure at its throat to the cavity of the sealing cover 2, the principle of fluid dynamics is cleverly utilized to automatically enhance the sealing force on the breathable membrane 3 when the flow velocity in the pipe increases, thus achieving a passive improvement in sealing effect.

[0035] One preferred embodiment of this application, such as Figures 1 to 10 As shown, a limiting structure can be installed on the sliding frame 41. When the protective frame 42 is flipped to the fully open position, the support block 48 abuts against the limiting structure, keeping the protective frame 42 in a horizontally unfolded state. The limiting structure on the sliding frame 41, in conjunction with the support block 48 on the protective frame 42, limits the horizontal position of the protective frame 42 when it is fully open, forming a stable maintenance platform that facilitates operation.

[0036] One preferred embodiment of this application, such as Figures 1 to 10 As shown, the length of the side support rod 46 is configured such that when the sliding column 45 slides to the end of the sliding groove 44, the protective frame 42 is supported at an obtuse angle to the top plane of the air supply pipe 1, forming a stable semi-open state. By precisely configuring the length of the side support rod 46, it can reliably support the protective frame 42 at an obtuse angle when the sliding column 45 slides to the end of the sliding groove 44. This semi-open state ensures a certain ventilation efficiency while providing basic protection, adapting to different usage scenarios.

[0037] Working principle:

[0038] The working principle of the air pressure adaptive structure of the intelligent responsive breathable membrane encompasses both air pressure response and mechanical operation. Its workflow is specifically described as follows: I. Air Pressure Adaptive Process: When the air pressure inside the air supply pipe 1 increases, the airflow continuously acts on the bottom of the breathable membrane 3. In the initial stage, the pressure difference is small, and the airflow mainly penetrates the microporous structure of the response layer to achieve normal air permeability. When the pressure difference increases to the first threshold, the microporous structure of the response layer begins to compress and close under pressure, and the gas permeability automatically decreases, achieving initial intelligent adjustment. If the pressure difference continues to increase to the second critical threshold, the air pressure will push the protective layer to undergo macroscopic deformation, causing the sealing layer to shift upwards and form a tight fit with the inner top surface of the sealing cover 2, establishing a reliable airtight seal. When the air pressure inside the pipe drops, the elastic restoring force of the protective layer drives the entire membrane structure to return to its initial shape, the micropores reopen, and the system returns to normal air permeability. II. Installation Mechanism Workflow: The installation mechanism's workflow mainly includes two stages: installation and disassembly. Installation Stage: Align the insert plate 37 at the bottom of the sealing cover 2 with the rectangular slot 31 at the top of the air supply pipe 1 and insert it. When the lower inclined block 310 contacts the telescopic inclined block 36, under the guidance of the inclined surface, it compresses the telescopic inclined block 36 into the telescopic groove 33, and the spring 35 stores energy. When the insert plate 37 is inserted to the designed depth, the lower inclined block 310 passes the highest point of the telescopic inclined block 36, the spring 35 releases energy, pushing the telescopic inclined block 36 to reset and locking the lower inclined block 310. When the inclined sliding sleeve 39 slides upward under the action of the connecting plate 38, it forms an interlocking structure with the telescopic inclined block 36, thus completing the reliable fixation of the sealing cover 2. At the same time, the bottom of the sealing cover 2 presses the sealing ring 5 to form a preliminary seal. During the disassembly stage: the inclined sliding sleeve 39 is pressed down, causing it to push the telescopic inclined block 36 into the telescopic groove 33 to retract, releasing the limit on the lower inclined block 310. Then, the sealing cover 2 is lifted upward, and the insert plate 37 drives the lower inclined block 310 to smoothly disengage from the rectangular slot 31, completing the disassembly. Throughout the process, the low-friction contact surface ensures smooth and effortless operation. III. Working process of the protective component: When the protective frame 42 is closed: the protective frame 42 and the inclined protective rod 43 on it completely cover the breathable membrane 3, forming a complete seal. It forms a physical barrier, effectively blocking accidental bumps, falling objects, or debris accumulation from the outside, thus providing normalized safety protection for the core component, the breathable membrane 3. When the protective frame 42 is open: by pushing the protective frame 42, the sliding column 45 slides along the sliding groove 44, and through the linkage of the side support rod 46 and the rotating block 47, the protective frame 42 is stably supported in the open position (such as horizontal or inclined state). This is intended to make room for operation, so that maintenance personnel can approach and perform maintenance, replacement, and other operations on the breathable membrane 3 or the sealing cover 2 without obstacles. Through the above working mechanism, this structure realizes intelligent adjustment of breathability, convenient installation and maintenance, and effective physical protection, comprehensively improving the working efficiency and service life of the breathable membrane system.

[0039] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A pressure-adaptive structure for a smart responsive breathable membrane, comprising an air delivery pipe (1), characterized in that: The gas supply pipe (1) is provided with a sealing cover (2) at the top, and a breathable membrane (3) is provided inside the sealing cover (2). The gas supply pipe (1) is provided with an installation mechanism at the top. The installation mechanism includes an installation component and a protective component. The installation component and the protective component work together. The breathable membrane (3) is provided with three layers, which are a protective layer, a response layer and a sealing layer from top to bottom. The protective layer is made of thermoplastic polyurethane with a thickness of 50-150 micrometers; its function is to provide the main structural rigidity and mechanical protection for the overall membrane structure and to serve as the main body for macroscopic deformation. The responsive layer is made of perfluorosulfonic acid resin or silicone rubber with microporous structure with a thickness of 10-50 micrometers; its function is to respond to changes in air pressure through the microporous structure or molecular chain gaps of the material itself. When the air pressure difference increases, its microscopic air permeable channels are compressed or closed, resulting in a decrease in gas permeability and achieving preliminary and fine air permeability regulation. The sealing layer is made of soft silicone rubber with a thickness of 100-300 micrometers; its function is to be tightly fitted with the sealing cover (2) under the drive of the protective layer when the air pressure difference reaches the critical threshold, forming an airtight seal.

2. The air pressure adaptive structure of the intelligent responsive breathable membrane as described in claim 1, characterized in that: The installation assembly includes a rectangular slot (31) located at the top of the gas pipe (1). The inner wall of the rectangular slot (31) has symmetrical extension slots (32) on both sides of its bottom. The gas pipe (1) has symmetrical telescopic slots (33) on both sides of its interior. A fixing post (34) is fixedly connected to one side of the inner wall of the telescopic slot (33). A spring (35) is fixedly connected to the outer side of the fixing post (34). A telescopic inclined block (36) is fixedly connected to the other end of the spring (35). The telescopic inclined block (36) extends into the interior of the extension groove (32) and is slidably connected to the gas pipe (1). The bottom sides of the sealing cover (2) are symmetrically fixedly connected with insert plates (37). The bottom of the insert plate (37) is fixedly connected with a connecting plate (38). The bottom of the connecting plate (38) is fixedly connected with a lower inclined block (310). The outer side of the connecting plate (38) is slidably connected with an inclined sliding sleeve (39). The telescopic inclined block (36), the inclined sliding sleeve (39) and the lower inclined block (310) are used in cooperation with each other.

3. The air pressure adaptive structure of the intelligent responsive breathable membrane as described in claim 1, characterized in that: The protective assembly includes a sliding frame (41), which is symmetrically fixedly connected to the top of the gas pipe (1). A protective frame (42) is rotatably connected between the two sliding frames (41). Protective rods (43) are fixedly connected at equal intervals inside the protective frame (42). Sliding grooves (44) are opened inside the two sliding frames (41). Sliding columns (45) are slidably connected inside the two sliding grooves (44). Side support rods (46) are rotatably connected to the outside of the two sliding columns (45). A rotating block (47) is symmetrically fixedly connected to the top of the protective frame (42). The other end of the rotating block (47) and the side support rod (46) are rotatably connected. A support block (48) is symmetrically fixedly connected to one side of the bottom of the protective frame (42).

4. The air pressure adaptive structure of a smart responsive breathable membrane as described in claim 2, characterized in that: The inner wall of the rectangular slot (31) is fixedly connected with a sealing ring (5). The top of the sealing ring (5) is inclined. The sealing ring (5) and the sealing cover (2) cooperate with each other to form a sealing structure.

5. The air pressure adaptive structure of the intelligent responsive breathable membrane as described in claim 3, characterized in that: The protective frame (42) is made of rigid material and its outer surface is coated with an anti-corrosion coating; the inclined direction of the protective rod (43) is configured to effectively block straight objects falling from above, while providing a channel for lateral airflow to minimize the impact on the ventilation function.

6. The air pressure adaptive structure of the intelligent responsive breathable membrane as described in claim 2, characterized in that: The contact surfaces of the telescopic inclined block (36) and the lower inclined block (310), as well as the contact surfaces of the inclined sliding sleeve (39) and the telescopic inclined block (36), are all treated with a low coefficient of friction or have sliding plates made of self-lubricating material embedded to ensure smooth installation and disassembly.

7. The air pressure adaptive structure of the intelligent responsive breathable membrane as described in claim 1, characterized in that: The inlet end of the gas supply pipe (1) is connected to a Venturi tube section, and the throat of the Venturi tube section is connected to the internal cavity of the sealing cover (2) through a branch pipe. When the airflow velocity in the gas supply pipe (1) increases, the negative pressure generated by the throat of the Venturi tube section acts on the breathable membrane (3) through the branch pipe to help enhance its sealing effect.

8. The air pressure adaptive structure of a smart responsive breathable membrane as described in claim 3, characterized in that: A limiting structure can be installed on the sliding frame (41). When the protective frame (42) is flipped to the fully open position, the support block (48) abuts against the limiting structure, so that the protective frame (42) remains in a horizontally unfolded state.

9. The air pressure adaptive structure of the intelligent responsive breathable membrane as described in claim 3, characterized in that: The length of the side support rod (46) is configured such that when the sliding column (45) slides to the end of the sliding groove (44), the protective frame (42) is supported at an obtuse angle to the top plane of the gas pipe (1), forming a stable semi-open state.

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