Inflatable aerogel super-heat-preservation tent
By adopting a multi-layer structure of aerogel layer and thermally insulated cotton tarpaulin in the inflatable tent, combined with the outer cover layer and sealed bottom plate, the problem of poor insulation effect of the inflatable tent is solved, and better insulation and energy retention effects are achieved.
Patent Information
- Application Number
- CN202420811642.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-18
AI Technical Summary
The existing inflatable tents lack effective insulation structure, resulting in rapid internal temperature dissipation and poor insulation effect, making it difficult to meet accommodation needs.
An inflatable aerogel ultra-insulating tent was designed, using an aerogel layer as the insulation layer, combining the outer cover layer and the insulation cotton tarpaulin to form a multi-layer structure, and the aerogel layer scattered through its nano-slim skeleton and air pores. The effect limits thermal radiation, the outer cover layer is connected by Velcro for easy installation, and a sealed base plate is installed to prevent heat loss.
Effectively reduce energy loss inside the tent, provide a good thermal insulation environment, reduce energy consumption, improve insulation effect in extreme weather, and prevent air leakage.
Smart Images
Figure CN222350392U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of inflatable tents, in particular to an inflatable aerogel super-heat-insulating tent. Background Art
[0002] At present, tents are widely used. In addition to being widely used by herdsmen in pastoral areas, tents are widely used in outdoor tourism, mountaineering, earthquake relief, geological exploration, military camping, etc. Inflatable tents are a type of tent. The frame is designed based on the principles of structural mechanics. The air bag is inflated by the gas pressure characteristics to form a column with a certain rigidity, which is supported by an organic combination to form the frame of the tent.
[0003] The existing inflatable tent is an integrated structure. After inflation is completed, the interior does not have a corresponding thermal insulation structure, so that the temperature inside and outside the tent tends to be consistent, the temperature inside the tent dissipates quickly, and the overall thermal insulation effect is poor, which makes it difficult to meet accommodation needs.
[0004] Therefore, it is necessary to provide an inflatable tent with a thermal insulation structure to reduce temperature dissipation in the tent and improve the thermal insulation effect of the tent. Utility Model Content
[0005] In view of the above analysis, the utility model aims to provide an inflatable aerogel super thermal insulation tent to solve the problem of poor thermal insulation performance of existing inflatable tents.
[0006] The purpose of this utility model is mainly achieved through the following technical solutions:
[0007] An inflatable aerogel super-insulation tent, comprising: a tent body, a tent front and a tent back; the tent body comprises: an outer tent surface and an inner tent surface, an inflatable cavity is formed between the outer tent surface and the inner tent surface, and the tent body is a semi-enclosed room-type structure after being inflated; the tent front and the tent back are respectively connected to the front and rear sides of the tent body;
[0008] The inner wall surfaces of the tent door and the back of the tent are respectively provided with a first insulation cotton tarpaulin and a second insulation cotton tarpaulin, and the inner wall surface of the main structure is provided with a third insulation cotton tarpaulin; the first insulation cotton tarpaulin, the second insulation cotton tarpaulin and the third insulation cotton tarpaulin are the basic insulation layer structure;
[0009] The surface of the basic thermal insulation layer structure is provided with a thermal insulation layer, and the thermal insulation layer is a multi-piece splicing structure; the thermal insulation layer comprises: an outer cover layer and an aerogel layer; the outer cover layer is provided on the surface of the aerogel layer, and the outer cover layer is connected to the basic thermal insulation layer structure.
[0010] Furthermore, the thermal insulation layer is a rectangular structure; multiple pieces of the thermal insulation layer are arranged vertically and horizontally on the inner surface of the basic thermal insulation layer structure and are continuously spliced to cover the inner surface of the basic thermal insulation layer structure.
[0011] Furthermore, the outer cover layer is Oxford cloth, and the edge of the outer cover layer is fixed by sewing or bonding.
[0012] Furthermore, Velcro is fixedly provided on the surface of the outer cover layer, and is connected to the basic thermal insulation layer structure via the Velcro.
[0013] Furthermore, the tent facade and the tent back have the same structural composition as the tent body but different shapes; the tent facade and the tent back can close the front side and the rear side of the tent body after being inflated.
[0014] Furthermore, a first sealing bottom plate is provided at the bottom of the tent door and the back of the tent; a second sealing bottom plate is provided at the bottom of the tent body; and the first sealing bottom plate and the second sealing bottom plate are both provided between the outer tent surface and the inner tent surface.
[0015] Furthermore, the thickness of the aerogel layer is 1 cm-3 cm.
[0016] Furthermore, a rectangular opening is provided on the tent door surface, and the rectangular opening serves as a tent door for entering and exiting.
[0017] Furthermore, a windproof door curtain is installed at the upper end of the tent door. The windproof door curtain is a multi-section structure and can be folded or rolled up.
[0018] The technical solution of the utility model can achieve at least one of the following effects:
[0019] 1. When the inflatable aerogel super thermal insulation tent of the utility model is used, the aerogel layer covers the tent body, the tent door and the inner wall of the back of the tent. By utilizing the structural characteristics of the aerogel itself, the thermal radiation wave in the aerogel layer will be continuously scattered by the interface between the nano-fine skeleton and the pores inside the aerogel, which limits the radiation free path, causing the thermal radiation capacity of the aerogel layer to approach the minimum limit, providing a heat-insulating environment inside the tent, and utilizing the good thermal insulation effect of the aerogel layer to reduce the energy loss inside the tent.
[0020] 2. The aerogel of the inflatable aerogel super thermal insulation tent of the utility model is wrapped with an outer cover layer, which can effectively prevent the lint and aerogel powder on the surface of the aerogel from escaping.
[0021] 3. The outer cover surface of the inflatable aerogel super thermal insulation tent of the utility model is provided with Velcro, which facilitates the connection between the thermal insulation layer and the base thermal insulation layer through the outer cover layer, and the aerogel layer is installed inside the tent. The thermal insulation layer adopts a block structure, which is convenient for transportation and installation, and the regular rectangular structure reduces the gap during connection, which is conducive to improving the thermal insulation effect.
[0022] 4. The inflatable aerogel super thermal insulation tent of the utility model is also provided with an inflatable cavity and a thermal insulation cotton tarpaulin, which constitute a basic thermal insulation structure. The double thermal insulation layer design improves the thermal insulation effect, so that the tent is conducive to maintaining the internal energy of the tent for a long time under extreme weather conditions, reducing the energy loss of heating equipment such as air conditioners inside the tent, and at the same time, the first sealed bottom plate and the second sealed bottom plate are used to further provide protection to prevent heat from being lost from the bottom. At the same time, the sealed bottom plate serves as a protective structure, which is conducive to reducing the phenomenon of air leakage in the inflatable tent due to touching sharp objects.
[0023] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by implementing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the contents specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.
[0025] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of the inflatable aerogel super thermal insulation tent of the utility model;
[0026] Figure 2 It is a schematic diagram of the front sectional three-dimensional structure of the tent main body of the inflatable aerogel super thermal insulation tent of the utility model;
[0027] Figure 3 It is a schematic diagram of the oblique section of the three-dimensional structure of the tent main body of the inflatable aerogel super thermal insulation tent of the utility model;
[0028] Figure 4 It is a schematic diagram of the oblique section of the three-dimensional structure of the tent front and the back of the inflatable aerogel super-insulation tent of the utility model;
[0029] Figure 5 It is a schematic diagram of the installation structure of the inner tent surface and the heat insulation layer of the tent body of the utility model;
[0030] Figure 6 for Figure 4Schematic diagram of the local enlarged structure at point A in the middle.
[0031] Reference numerals:
[0032] 1-outer tent surface; 2-tent door surface; 3-outer cover layer; 4-first thermal insulation cotton tarpaulin; 5-back of tent; 6-second thermal insulation cotton tarpaulin; 7-first sealing bottom plate; 8-inner tent surface; 9-inflatable cavity; 10-aerogel layer; 11-second sealing bottom plate. DETAILED DESCRIPTION
[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.
[0034] Example 1
[0035] A specific embodiment of the utility model is as follows Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, an inflatable aerogel super thermal insulation tent is disclosed, comprising: a tent body, a tent facade 2 and a tent back 5; the tent body comprises: an outer tent surface 1 and an inner tent surface 8, an inflatable cavity 9 is formed between the outer tent surface 1 and the inner tent surface 8, and the tent body is a semi-enclosed room-type structure after being inflated; the tent facade 2 and the tent back 5 are respectively connected to the front and rear sides of the tent body; the inner wall surfaces of the tent facade 2 and the tent back 5 are provided with a first thermal insulation cotton tarpaulin 4 and a second thermal insulation cotton tarpaulin 6, and the inner wall surface of the main structure is provided with a third thermal insulation cotton tarpaulin (not shown in the figure); the first thermal insulation cotton tarpaulin 4 and the second thermal insulation cotton tarpaulin 6 are a basic thermal insulation layer structure; a heat insulation layer is provided on the surface of the basic thermal insulation layer structure, and the heat insulation layer is a multi-piece splicing structure; the heat insulation layer comprises: an outer cover layer 3 and an aerogel layer 10; the outer cover layer 3 is covered on the surface of the aerogel layer 10, and the outer cover layer 3 is connected to the basic thermal insulation layer structure.
[0036] like Figure 1 As shown, the tent front 2 and the tent back 5 are symmetrically arranged and have the same structure.
[0037] Specifically, the inner wall surfaces of the tent door 2 and the tent back 5 are fixed with the first insulation cotton tarpaulin 4 and the second insulation cotton tarpaulin 6 by sewing, and the inner surface of the inner tent surface 8 of the tent body is fixed with the third insulation cotton tarpaulin by sewing, and the insulation cotton tarpaulin is the basic insulation layer structure. When inflated, the basic insulation structure is unfolded as the tent is unfolded.
[0038] like Figure 4 , Figure 5As shown, the tent front 2 and the tent back 5 have the same structural composition as the tent body but different shapes; the tent front 2 and the tent back 5 can close the front side and the rear side of the tent body after being inflated. That is to say, the tent body, the tent front 2 and the tent back 5 are all double-layer structures with an inner tent surface 8 and an outer tent surface 1, and an intermediate cavity 9 is formed between the inner tent surface 8 and the outer tent surface 1.
[0039] In the present invention, the inner tent surface 8 of the tent body, the tent door 2 and the tent back 5 are fabric surfaces, and the outer tent surface 1 is windproof canvas.
[0040] Specifically, Figure 1 As shown, the tent facade 2 and the tent back 5 are both planar structures, and the edges of the inner and outer awning surfaces 8 and 1 of the two are connected to the inner and outer awning surfaces 8 and 1 of the tent body by sewing. As the two ends of the outer awning surface 1 of the tent body are sewn flush with the tent facade 2 and the tent back 5, the tent forms a room-shaped structure. Preferably, a bracket is arranged inside the outer awning surface 1, and after inflation, the bracket is used to maintain the outer awning surface 1 to maintain the room-shaped structure, such as Figure 1 shown.
[0041] Specifically, Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a heat insulation layer is arranged on the outside of the basic heat insulation layer structure, and multiple heat insulation layers are arranged horizontally and vertically in the inner layer of the tent. The utility model is conducive to improving the heat preservation effect by arranging the heat insulation cotton tarpaulin and the aerogel layer 10 as a double-layer heat preservation structure.
[0042] In a specific embodiment of the present invention, the thermal insulation layer is a rectangular structure; multiple pieces of the thermal insulation layer are arranged vertically and horizontally on the inner surface of the basic thermal insulation layer structure and are continuously spliced to cover the inner surface of the basic thermal insulation layer structure.
[0043] Preferably, the heat insulation layer is a square structure.
[0044] Preferably, the aerogel layer 10 is made of mature aerogel felt on the market.
[0045] Specifically, the thickness of the aerogel layer is 1-3 cm. Preferably, the thickness of the aerogel layer is 2 cm.
[0046] Specifically, the outer cover layer 3 is oxford cloth, and the outer cover layer 3 is attached to the surface of the aerogel layer 10, and the edges of the outer cover layer 3 are fixed by sewing or bonding.
[0047] In a specific embodiment of the utility model, the thermal insulation layer includes an outer cover layer 3 and an aerogel layer 10 arranged in the outer cover layer 3; the aerogel layer 10 is a rectangular block with uniform thickness, the outer cover layer 3 is a rectangular sleeve, which can be sleeved on the outside of the aerogel layer 10, and the edge of the outer cover layer 3 is fixed by bonding or sewing. After fixing, the outer cover layer 3 can wrap the aerogel layer 10 inside.
[0048] Furthermore, the outer cover layer 3 is fixedly provided with Velcro on its surface, and is connected to the basic insulation layer structure through the Velcro. Specifically, Velcro is sewn on the outer surface of the outer cover layer 3, and is bonded to the basic insulation layer structure through the Velcro. Correspondingly, Velcro is also provided on the surface of the inner awning 8, which is convenient for quick adhesion and closure with the Velcro on the surface of the outer cover layer 3. Figure 2-4 shown.
[0049] The utility model conveniently installs the heat insulation layer inside the tent through the Velcro, and the aerogel layer 10 is attached to the inner wall surface of the inner tent surface 8 through the Velcro of the outer cover layer 3 and the inner tent surface 8, and it is also convenient to remove the heat insulation layer from the inner tent surface.
[0050] The utility model utilizes the structural characteristics of aerogel itself to reduce the heat flow of the tent insulation, presents a zero convection effect, and avoids the energy leakage inside the tent; the heat radiation wave will be continuously scattered by the interface between the nano-fine skeleton and the pores inside the aerogel in the aerogel layer 10. Since the pores in the aerogel layer 10 are nano-pores and have an extremely high porosity, it is equivalent to adding countless scattering centers, limiting the radiation free path, and the heat radiation capacity of the aerogel layer 10 is close to the minimum limit, which greatly improves the thermal insulation effect of the tent.
[0051] For example, in this embodiment, the tent body, the tent facade 2 and the tent back 5 are separate structures and are fixed as a whole by bonding. The middle cavities 9 of the tent body, the tent facade 2 and the tent back 5 are not connected to each other and are inflated independently. After inflation, they expand into a house-shaped structure and a house-shaped side panel to form a tent shape. Alternatively, the tent body, the tent facade 2 and the tent back 5 are an integrated structure, the inner tent surface 8 and the outer tent surface 1 of the three are connected to each other, and the internal inflation cavities 9 are connected to each other. When inflated, the three expand synchronously into a tent shape.
[0052] In a specific embodiment of the utility model, the bottom of the tent facade 2 and the tent back 5 are both provided with a first sealing bottom plate 7; the first sealing bottom plate 7 serves as the bottom support of the tent facade 2 and the tent back 5; the first sealing bottom plate 7 is connected between the inner tent surface 8 and the outer tent surface 1 of the tent facade 2 or the tent back 5 to form an intermediate cavity 9, which forms a plate-type tent facade 2 or the tent back 5 after being inflated. The bottom ends of the tent facade 2 and the tent back 5 are both provided with the first sealing bottom plate 7 to maintain the balance and stability of the lower end of the tent.
[0053] Specifically, two first sealing bottom plates 7 are provided, which are used to seal the tent door 2 and the tent back 5 respectively.
[0054] In a specific embodiment of the present invention, a second sealing bottom plate 11 is provided at the bottom of the tent body; the second sealing bottom plate 11 serves as the bottom support of the tent body, is connected between the inner tent surface 8 and the outer tent surface 1 of the tent body, forms an intermediate cavity 9 inside the tent body, and can seal the intermediate cavity 9 of the tent body. Figure 2 shown.
[0055] Specifically, two second sealing bottom plates 11 are also provided, which are respectively used to seal the bottom end surfaces on both sides of the tent body, so that the interior of the tent body is in a sealed state.
[0056] Specifically, the first sealing bottom plate 7 and the second sealing bottom plate 11 are both rectangular plate structures. The first sealing bottom plate 7 and the second sealing bottom plate 11 are made of hard plastic plate or metal plate.
[0057] Preferably, the first sealed bottom plate 7 and the second sealed bottom plate 11 are formed by splicing a plurality of rectangular plates that are rotatably connected, for example, hinged by hinge shafts, so that the tent can be easily folded and stored after being deflated.
[0058] The existing inflatable bag and the inflatable end surface of the tent lack a protective structure, which makes the inflatable tent very easy to leak due to contact with sharp objects on the ground. In the utility model, a first sealing bottom plate 7 and a second sealing bottom plate 11 are provided, which can serve as a protective structure to protect the inflatable tent from being scratched by sharp objects on the ground.
[0059] like Figure 1 As shown, a rectangular opening is provided on the tent door 2, and the rectangular opening serves as a tent door for entering and exiting. Furthermore, a wind-shielding door curtain is installed on the upper end of the tent door. The wind-shielding door curtain can be rolled up or unfolded, and can cover the rectangular opening on the tent door 2 when unfolded.
[0060] In a specific embodiment of the utility model, the windproof door curtain is a multi-section structure. Specifically, the multi-section door curtain is a rectangular strip structure and is arranged in sequence longitudinally; the multi-section door curtain is connected by soft colloid or hinged connection, and can be folded or rolled up. When the multi-section door curtain is partially folded or rolled up, a partial tent door can be opened.
[0061] Specifically, the wind-shielding door curtain and the tent door surface can be bonded together by Velcro; and a bonding Velcro is also provided on the back side of the wind-shielding door curtain so that the wind-shielding door curtain can be rolled up above the tent door.
[0062] Alternatively, a plurality of first magnet sheets and second magnet sheets are respectively provided on the inner side of the wind-proof door curtain and the outer side of the tent facade 2; and thus the wind-proof door curtain can seal the interior of the tent by the attraction of the first magnet sheets and the second magnet sheets to prevent air leakage. When the wind-proof door curtain needs to be lifted, the wind-proof door curtain can also be kept lifted by the reverse attraction of the two first magnet sheets (one positive and one negative) or the misaligned attraction of the first magnet sheet and the second magnet sheet to achieve a ventilation effect. Preferably, a small gap is provided between the wind-proof door curtain and the tent facade to prevent oxygen deficiency inside the tent.
[0063] Preferably, the windproof door curtain is made of thick windproof canvas or soft plastic material.
[0064] In this embodiment, the aerogel layer 10 located on the inner wall of the tent body, the inner wall of the tent door 2, and the inner wall of the tent back 5 is combined with the thermal insulation cotton tarpaulin to form a double-layer thermal insulation structure. At the same time, the windproof curtain blocks the entry of external air temperature, thereby achieving the thermal insulation effect of the tent.
[0065] In this embodiment, the aerogel layer 10 is an existing aerogel block product, which is evenly attached to the inner wall of the tent body, the tent facade 2 and the base insulation layer (insulating cotton tarpaulin) on the back 5 of the tent in a block shape, and is used to maintain the energy inside the tent. The insulating cotton tarpaulin is a mature product sold on the market, which is sewn with the inner wall of the tent body, the tent facade 2 and the back 5 of the tent, and is used to stabilize the temperature inside the tent, improve the heat insulation effect, reduce the energy loss of the tent, and improve the heat preservation effect. In addition, the inflatable cavity 9 is filled with air, which is also conducive to reducing energy loss.
[0066] It is worth noting that: in order to clearly illustrate the structural composition of the utility model, the thermal insulation layers on the tent front and the back of the tent in the drawings of the specification are not completely pasted; in actual application, the area for installing the thermal insulation layer can also be determined according to needs.
[0067] Directions:
[0068] When using the inflatable aerogel super thermal insulation tent, gas is filled into the inflation cavity 9, so that the tent body, the tent facade 2 and the tent back 5 are expanded, and then the outer tent surface 1 is tightened to form a room-type structure. The first sealing bottom plate 7 at the bottom of the tent facade 2 and the tent back 5 and the second sealing bottom plate 11 at the bottom of the tent body are used to help the overall bottom remain stable. The thermal insulation cotton tarpaulin set on the inner wall of the tent is used to provide a sealed thermal insulation environment. The Velcro on the outer wall of the outer cover layer 3 is glued and connected to the inner tent surface 8, so that the aerogel layer 10 and the thermal insulation cotton tarpaulin remain tightly adhered. The aerogel layer 10 provides thermal insulation protection for the internal energy, avoids energy loss, effectively reduces the energy loss of the heating equipment, and increases the overall practicality.
[0069] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.
Claims
1. An inflatable aerogel super thermal insulation tent, characterized in that: include: A tent body, a tent front (2) and a tent back (5); the tent body comprises: an outer tent surface (1) and an inner tent surface (8); an inflatable cavity (9) is formed between the outer tent surface (1) and the inner tent surface (8); the tent body is a semi-enclosed room-type structure after being inflated; the tent front (2) and the tent back (5) are respectively connected to the front and rear sides of the tent body; The inner wall surfaces of the tent front (2) and the tent back (5) are respectively provided with a first heat-insulating cotton tarpaulin (4) and a second heat-insulating cotton tarpaulin (6), and the inner wall surface of the tent main structure is provided with a third heat-insulating cotton tarpaulin; the first heat-insulating cotton tarpaulin (4), the second heat-insulating cotton tarpaulin (6) and the third heat-insulating cotton tarpaulin are the basic heat-insulating layer structure; A heat insulation layer is arranged on the surface of the basic heat insulation layer structure, and the heat insulation layer is a multi-piece splicing structure; the heat insulation layer comprises: an outer cover layer (3) and an aerogel layer (10); the outer cover layer (3) is arranged on the surface of the aerogel layer (10), and the outer cover layer (3) is connected to the basic heat insulation layer structure.
2. The inflatable aerogel super thermal insulation tent according to claim 1, characterized in that: The heat insulation layer is a rectangular structure.
3. The inflatable aerogel super thermal insulation tent according to claim 2, characterized in that: The plurality of thermal insulation layers are arranged vertically and horizontally on the inner surface of the basic thermal insulation layer structure and are continuously spliced to cover the inner surface of the basic thermal insulation layer structure.
4. The inflatable aerogel super thermal insulation tent according to claim 3, characterized in that: The outer cover layer (3) is made of Oxford cloth, and the edge of the outer cover layer (3) is fixed by sewing or bonding.
5. The inflatable aerogel super thermal insulation tent according to claim 4, characterized in that: The outer cover layer (3) is fixedly provided with Velcro on its surface and is connected to the basic thermal insulation layer structure via the Velcro.
6. The inflatable aerogel super thermal insulation tent according to any one of claims 1 to 5, characterized in that: The tent door (2) and the tent back (5) have the same structural composition as the tent main body but different shapes; the tent door (2) and the tent back (5) can close the front side and the rear side of the tent main body after being inflated.
7. The inflatable aerogel super thermal insulation tent according to claim 6, characterized in that: A first sealing bottom plate (7) is arranged at the bottom of the tent door (2) and the bottom of the tent back (5); a second sealing bottom plate (11) is arranged at the bottom of the tent body; and the first sealing bottom plate (7) and the second sealing bottom plate (11) are arranged between the outer tent surface (1) and the inner tent surface (8).
8. The inflatable aerogel super thermal insulation tent according to claim 1, characterized in that: The thickness of the aerogel layer (10) is 1 cm to 3 cm.
9. The inflatable aerogel super thermal insulation tent according to claim 1, characterized in that: A rectangular opening is arranged on the tent door surface (2), and the rectangular opening serves as a tent door for entering and exiting.
10. The inflatable aerogel super thermal insulation tent according to claim 9, characterized in that: A windproof door curtain is installed at the upper end of the tent door. The windproof door curtain is a multi-section structure and can be folded or rolled up.