A type of cold-resistant, waterproof, and warm boot

Abstract

This utility model belongs to the field of outdoor cold-weather boot technology, and discloses a cold-resistant and waterproof cold-weather boot, including an outsole, an outer boot, and an inner boot. The outsole is sealed to the bottom of the outer boot through a flange, effectively preventing ice, snow, and cold wind from entering through the gaps at the bottom. The hollow insulation cavity formed by the two effectively reduces the direct conduction of extremely low ground temperatures to the inside of the boot, allowing the entire boot to maintain good cold resistance and structural stability in extremely cold environments below -50℃. The anti-slip structure on the outsole improves adhesion to ice surfaces. The double-layer structure of the outer and inner boots works in tandem; the outer boot provides insulation and structural support, while the inner boot is responsible for internal insulation and comfort adjustment. Furthermore, the detachable design of the inner and outer boots facilitates cleaning, drying, and replacement, and different types of inner boots can be selected according to different environments, improving the overall adaptability and durability of the boot.

Description

Technical Field

[0001] This utility model relates to the field of outdoor cold-proof boot technology, and in particular to a cold-resistant and waterproof cold-proof boot. Background Technology

[0002] Winter boots are primarily used for outdoor work and activities in extremely cold, snowy, or low-temperature environments, such as border patrol, polar scientific expeditions, power and communication line maintenance, forestry patrols, road snow removal, and urban sanitation work—jobs requiring prolonged exposure to low temperatures. They are also widely used in winter outdoor sports such as snow hiking, skiing, camping, and ice fishing, as well as in high-altitude operations and specialized low-temperature environments like cold storage and refrigerated warehouses, providing protection for the wearer.

[0003] However, traditional winter boots typically use insulating cotton or fillings as insulation materials. These materials easily absorb sweat, moisture, or snowmelt during prolonged wear, making them difficult to dry quickly. This creates a damp environment inside the boot, significantly reducing its warmth retention and causing foot discomfort, odor, and even frostbite. Furthermore, their outer layer often uses ordinary waterproof coatings or leather for waterproofing. However, these coatings are prone to wear and cracking after repeated bending, friction, and long-term use, leading to a decrease in waterproof performance. This allows moisture or snow to gradually seep in through the stitching and opening, making it difficult to maintain stable waterproofing in harsh weather. In addition, traditional winter boots exhibit reduced slip resistance in extremely cold conditions; their insulation and cold-resistance are also insufficient for the demands of extreme cold environments, resulting in significant deficiencies in overall structural adaptability and durability. Utility Model Content

[0004] The purpose of this invention is to solve or at least alleviate some or all of the aforementioned problems. Therefore, the purpose of this invention is to provide a cold-resistant, waterproof, and warm boot that maintains dryness and stable warmth even after prolonged wear in extremely cold working conditions; it has strong wind and water resistance; effectively improves slip resistance and walking safety; enhances cold resistance and insulation; and ensures good adaptability and durability of the boot in extreme low-temperature environments.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A cold-resistant, waterproof, and warm-weather boot, comprising:

[0007] The outsole of the boot has an anti-slip structure on its bottom surface, and the upper surface of the outsole has a flange that extends continuously upward along its periphery;

[0008] The outer boot has its bottom sealed to the flange portion, and the outer boot and the outsole form a hollow heat-insulating cavity for insulating the low temperature of the ground; the outer boot includes, from the outside to the inside, an outer protective layer, a waterproof layer, a middle heat-insulating layer and a waterproof sealing sock, and each layer is bonded to each other to form an outer shell with supporting strength for waterproofing, windproofing and insulation against external cold air; a bottom heat-insulating pad is provided on the side of the bottom of the outer boot opposite to the outsole;

[0009] The inner boot is detachably installed inside the outer boot and fits against the inner wall of the outer boot. The inner boot includes a heat-locking composite layer, a heat-insulating layer and a breathable composite layer from the outside to the inside, and the layers are bonded together to form a flexible inner shell for locking in temperature, keeping warm and dissipating moisture in the feet.

[0010] In some alternative embodiments, the heat-locking composite layer covers the sole, upper, and shaft of the inner boot, and comprises, from the outside to the inside:

[0011] The first silver film layer is a continuous and dense metal film structure;

[0012] A wool blended felt layer is disposed on the inner side of the first silver film layer;

[0013] The second silver film layer is disposed on the inner side of the wool blended felt layer, and multiple through holes are formed on the second silver film layer. The heat reflected by the first silver film layer is conducted inward through the wool blended felt layer and locked in the insulation layer through the through holes of the second silver film layer.

[0014] In some optional embodiments, the insulation layer covers the upper and shaft of the inner boot, and uses insulation cotton with a unit area weight of not less than 400g / m², the insulation layer thickness is not less than 8mm, its thermal insulation coefficient is not less than 1.8, and its thermal resistance is not less than 0.28m²·K / W.

[0015] In some alternative embodiments, the breathable composite layer includes a sandwich mesh layer and a foam layer:

[0016] The sandwich mesh layer covers the upper and shaft of the inner boot, and from the outside to the inside, it includes an outer mesh layer, a connecting wire layer and an inner mesh layer, forming a breathable channel.

[0017] The foam layer covers the sole of the inner boot, forming an internal moisture management structure to wick away moisture and keep the sole dry, while providing cushioning and comfort.

[0018] In some alternative embodiments, the inner boot also includes an insole that covers the foam layer and is sized to match the inner sole size of the inner boot.

[0019] In some alternative embodiments, the inner boot has a pull ring near its opening for pulling the inner boot on or off.

[0020] In some alternative embodiments, the boot height of the outer boot is higher than that of the inner boot.

[0021] In some alternative embodiments, the outer protective layer covers the upper of the outer boot and is made of rubber to prevent external impacts and abrasion.

[0022] The waterproof layer covers the upper and shaft of the outer boot, and is made of Oxford cloth with a waterproof membrane coating on its outer surface to prevent water vapor from penetrating through siphon action.

[0023] The middle heat insulation layer covers the upper and shaft of the outer boot, and is made of foamed rubber to insulate against low external temperatures.

[0024] The waterproof sealing sock covers the sole, upper, and shaft of the outer boot, and is used to enhance waterproof sealing and prevent moisture from entering the outer boot.

[0025] The bottom heat insulation pad covers the sole of the outer boot and is used to insulate against the low temperature of the ground.

[0026] In some alternative embodiments, the waterproof sealing sock is provided with a locking seal at the opening of the outer boot.

[0027] In some alternative embodiments, the outsole of the boot is made of rubber, and the anti-slip structure on its bottom surface is provided with anti-slip particles.

[0028] The beneficial effects of this utility model are:

[0029] This invention provides a cold-resistant, waterproof, and cold-weather boot, comprising an outsole, an outer boot, and an inner boot. The outsole is sealed to the bottom of the outer boot via a flange, effectively preventing ice, snow, and cold wind from penetrating through gaps in the bottom. The hollow insulating cavity formed by the two components reduces contact with the ground. The air within the hollow insulating cavity creates an insulation system, enhancing the warmth of the bottom and effectively reducing the direct conduction of extremely low ground temperatures to the boot interior. This improves the insulation performance of the sole, allowing the entire boot to maintain good cold resistance and structural stability even in extremely cold environments below -50℃. The anti-slip structure on the outsole improves adhesion to ice surfaces and prevents a decrease in anti-slip performance due to material hardening at low temperatures. The double-layer structure of the outer and inner boots works in tandem. The outer boot provides insulation and structural support, while the inner boot provides internal insulation and comfort. The outer boot is composed of multiple layers of protective materials, effectively blocking the penetration of wind, snow, and moisture, and resisting external low temperatures and mechanical impacts. The outer boot supports the entire shoe, is resistant to deformation, and is suitable for long-term use in extremely cold conditions. As a second layer of insulation, the inner boot features a heat-locking composite layer and an insulating layer that quickly retain heat and maintain foot temperature. A breathable composite layer wicks away sweat and internal moisture, keeping the inside of the boot dry and preventing hypothermia caused by dampness and cold. The inner boot is made of soft material that conforms to the shape of the foot, enhancing comfort during extended wear. Furthermore, the removable design of the inner and outer boots makes them easy to clean, dry, and replace, and different types of inner boots can be selected for different environments, improving the overall boot's adaptability and durability. Attached Figure Description

[0030] Figure 1 This is a schematic cross-sectional view of the cold-resistant, waterproof, and cold-proof boots of this utility model;

[0031] Figure 2 This is a cross-sectional view of the outer boot in this utility model;

[0032] Figure 3 This is a cross-sectional view of the inner boot in this utility model.

[0033] In the picture:

[0034] 1. Boot outsole; 11. Anti-slip structure; 12. Flanged part; 13. Hollow insulation cavity;

[0035] 2. Outer boot; 21. Outer protective layer; 22. Waterproof layer; 23. Middle heat insulation layer; 24. Waterproof sealing sock liner; 25. Bottom heat insulation pad;

[0036] 3. Inner boot; 31. Thermal insulation composite layer; 311. First silver film layer; 312. Wool blended felt layer; 313. Second silver film layer; 32. Thermal insulation layer; 33. Breathable composite layer; 331. Sandwich mesh layer; 332. Foam layer; 34. Insole. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0038] In this invention, the terms "comprising," "including," "having," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0039] In this invention, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "and / or" relationship.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," "combined," "coupled," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can be a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For example, a direct connection refers to two parts or components being connected together without an intermediate component, while an indirect connection refers to two parts or components each being connected to at least one intermediate component, with the connection achieved through the intermediate component. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, "connected" and "coupled" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0041] In this invention, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0042] In this invention, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can be performed by one part, one component, or a combination of multiple parts.

[0043] In this utility model, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationships shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, in the context, it should be understood that when an element is mentioned as being "upper" or "lower" of another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as "upper side," "lower side," "left side," "right side," "front side," and "rear side" not only represent positive orientation but can also be understood as lateral orientation. For example, "above," "on top of," "upper side of," and "above" of the first feature and the second feature include the first feature being directly above, to the upper left, to the upper right, to the upper front, and to the upper rear of the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. The terms "below," "under," "below," and "below" for "first feature" and "second feature" include situations where the first feature is directly below, to the lower left, to the lower right, in front of, or behind the second feature, or simply indicate that the first feature is at a lower horizontal level than the second feature. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0044] Please refer to Figures 1 to 3As shown, this embodiment provides a cold-resistant, waterproof, and cold-proof boot for resisting extremely cold environments below -50°C. It includes an outsole 1, an outer boot 2, and an inner boot 3. The outsole 1 has an anti-slip structure 11 on its bottom surface, and a flange 12 is continuously provided along its periphery on its upper surface. The bottom of the outer boot 2 is sealed to the flange 12, and the outer boot 2 and the outsole 1 together form a hollow insulating cavity 13 for insulating against the low temperature of the ground. The outer boot 2 includes, from the outside to the inside, an outer protective layer 21 and a waterproof layer 22. The outer boot 2 consists of a heat-insulating layer 23 and a waterproof sealing sock 24, with each layer bonded together to form a strong outer shell for waterproofing, windproofing, and insulation against external cold air. The bottom of the outer boot 2 is provided with a bottom heat-insulating pad 25 on the side opposite to the outer sole 1. The inner boot 3 is detachably installed inside the outer boot 2 and is bonded to the inner wall of the outer boot 2. The inner boot 3 includes a heat-locking composite layer 31, a heat-insulating layer 32, and a breathable composite layer 33 from the outside to the inside, with each layer bonded together to form a flexible inner shell for locking in temperature, keeping warm, and dissipating moisture from the feet.

[0045] The outsole 1 is sealed to the bottom of the outer boot 2 via a flange 12, effectively preventing ice, snow, and cold wind from intruding through the gaps at the bottom. The hollow insulating cavity 13 formed by the two reduces contact with the ground. The air inside the hollow insulating cavity 13 forms an insulation system, enhancing the warmth of the bottom and effectively reducing the direct conduction of extremely low ground temperatures into the boot. This improves the thermal insulation performance of the boot sole, allowing the entire boot to maintain good cold resistance and structural stability even in extremely cold environments below -50℃. The anti-slip structure 11 on the outsole 1 improves adhesion to ice surfaces and prevents a decrease in anti-slip performance caused by the material hardening at low temperatures.

[0046] The boot employs a double-layer structure with an outer boot (2) and an inner boot (3) working in tandem. The outer boot (2) provides insulation and structural support against the external environment, while the inner boot (3) provides internal insulation and comfort regulation. The outer boot (2) is constructed of multiple layers of protective materials, effectively blocking wind, snow, and moisture penetration, and resisting low temperatures and mechanical impacts. It supports the entire boot, is resistant to deformation, and is suitable for long-term use in extremely cold conditions. The inner boot (3), as a second layer of insulation, features a heat-locking composite layer (31) and an insulating layer (32) that quickly store heat and maintain foot temperature. A breathable composite layer (33) effectively wicks away sweat and internal moisture, keeping the boot dry and preventing hypothermia caused by dampness and cold. The inner boot (3) is made of soft material that conforms to the shape of the foot, enhancing comfort during extended wear. Furthermore, the detachable design of both the inner boot (3) and outer boot (2) facilitates cleaning, drying, and replacement. Different types of inner boots (3) can be selected for different environments, improving the overall adaptability and durability of the boot.

[0047] Combination Figure 1 and Figure 3As shown, specifically, the heat-locking composite layer 31 covers the sole, upper, and shaft of the inner boot 3, and consists of a first silver film layer 311, a wool blend felt layer 312, and a second silver film layer 313 from the outside to the inside. The first silver film layer 311 is a continuous and dense metal film structure. The wool blend felt layer 312 is disposed inside the first silver film layer 311. The second silver film layer 313 is disposed inside the wool blend felt layer 312, and has multiple through holes. The silver film, as a highly reflective metal layer, can reflect far-infrared radiation heat from the human body, significantly reducing heat loss. It also has high thermal conductivity, enabling it to quickly and evenly distribute foot heat to the inner boot 3, avoiding heat loss caused by uneven local temperatures. The heat-locking composite layer 31 covers the entire inner boot 3, forming a fully enclosed three-dimensional heat-insulating cavity from the bottom, sides, and top of the foot, creating a continuous heat reflection and insulation barrier to reduce heat leakage. The first silver film layer 311 thus constructs an outer thermal radiation reflective interface, effectively blocking heat diffusion outward and transmitting far-infrared rays back to the heat source, reducing heat radiation dissipation. The wool blended felt layer 312 has numerous tiny static air cavities formed by interlaced fibers. Air is a poor conductor of heat, which can significantly reduce heat convection and heat conduction. At the same time, the natural crimp structure of wool fibers further generates internal micro air pockets, improving thermal insulation performance. In addition, wool releases heat during moisture absorption (hygroscopic heat generation effect), which can compensate for some heat loss and enhance the overall insulation effect. Therefore, the wool blended felt layer 312 can form a stable and efficient air insulation structure and provide an additional heat source. The second silver film layer 313, as an inner reflective interface, can reflect the heat radiation penetrating the wool blended felt layer 312 again and guide it to the inner insulation layer 32. Its through holes ensure the dissipation of moisture and allow heat to enter the insulation layer 32 and be further locked in. In summary, the heat-locking composite layer 31 achieves a synergistic effect through the high reflectivity and thermal conductivity of the first silver film layer 311, the air insulation and moisture absorption and heat generation effect of the wool blend felt layer 312, and the breathability and reflectivity of the second silver film layer 313. This allows heat to be reflected, released and retained multiple times inside the inner boot 3, thereby significantly improving the overall heat preservation performance in extremely cold environments and keeping the inside of the inner boot 3 dry and comfortable.

[0048] Furthermore, the wool blended felt layer 312 uses 70% to 90% wool content. While fully utilizing the excellent warmth retention and moisture absorption and temperature regulation properties of wool fibers, it introduces 10% to 30% synthetic fibers to enhance the mechanical strength and structural stability of the felt. This blending ratio not only enhances the tear resistance and abrasion resistance of the felt but also improves its deformation recovery ability under repeated bending and compression conditions. This allows the felt layer to maintain a stable thickness and fluffy structure even after long-term use, preventing collapse and ensuring long-lasting and effective thermal insulation performance.

[0049] Because the lower leg and ankle are densely populated with blood vessels, the foot is the area where heat loss is fastest. To further improve the warmth retention, in some embodiments, the insulation layer 32 covers the upper and shaft of the inner boot 3. It uses insulation cotton with a unit area weight of not less than 400g / m², a thickness of not less than 8mm, a thermal insulation coefficient of not less than 1.8, and a thermal resistance of not less than 0.28m²·K / W. This effectively improves the lateral and upper cold resistance of the inner boot 3. By fixing a large amount of still air, extending the heat conduction path, and reducing radiative heat loss, a highly efficient heat insulation zone is formed in the area from the ankle to the shaft of the inner boot 3, protecting a large area of ​​blood vessel distribution, improving the overall body temperature retention capacity, and thus enhancing the overall warmth retention performance and continuous heat-locking effect of the entire boot in extremely cold environments.

[0050] Since the feet still sweat in extremely cold conditions, if moisture is retained, the warmth retention will be significantly reduced. In order to improve breathability, in some embodiments, the breathable composite layer 33 includes a sandwich mesh layer 331 and a foam layer 332. The sandwich mesh layer 331 covers the upper and shaft of the inner boot 3, and from the outside to the inside, it includes an outer mesh layer, a connecting yarn layer and an inner mesh layer to form a breathable channel. The foam layer 332 covers the sole of the inner boot 3 to form a moisture management structure inside the boot, which is used to wick away moisture and keep the sole dry, while providing cushioning and comfort.

[0051] The sandwich mesh fabric forms a three-dimensional structure. The outer and inner mesh layers provide multi-directional breathable surfaces, while the connecting filament layer in the middle forms a stable three-dimensional support chamber. This creates a continuous airflow channel, effectively accelerating the upward and outward diffusion of moisture and preventing condensation at the boot top and shaft of the inner boot 3, keeping it dry. The connecting filament layer supports the internal cavity, ensuring stability even under compression and bending, unlike ordinary fabrics that can be flattened and lose breathability. Specifically, the outer and inner mesh layers can be made of polyester. Polyester typically has a moisture absorption rate of less than 0.5%, far lower than materials like cotton and nylon, preventing it from absorbing water and becoming damp and cold. This keeps the breathable channels of the mesh fabric from being blocked by moisture, allowing for smoother moisture removal. The connecting filament layer can be made of polyester monofilament with a thickness of at least 4mm. Polyester monofilament has high rigidity and good resilience, effectively maintaining the stable and reliable three-dimensional support structure of the inner and outer mesh fabrics.

[0052] The foam layer 332 is located at the bottom of the inner boot 3 and can be made of Ortholite polyurethane foam. Ortholite is a high-performance polyurethane foam with numerous interconnected open micropores that allow air and moisture to flow freely, quickly absorbing and diffusing sweat from the soles of the feet, and guiding moisture along the pores to the outer layer material, achieving stable dryness and preventing cold, damp feet. At the same time, the foam maintains long-lasting resilience, is not prone to collapsing, reduces pressure on the soles of the feet, improves walking comfort, and enhances the boot's adaptability and durability.

[0053] Therefore, by setting sandwich mesh fabric at the boot upper and boot shaft of the inner boot 3, lateral moisture can be quickly vented to keep the upper part of the foot dry. A foam layer is set at the sole of the inner boot 3 to quickly absorb and release sweat from the sole of the foot and support the sole of the foot, providing cushioning. The two work together to form a zoned moisture management system inside the inner boot 3, improving overall warmth and comfort.

[0054] In some alternative embodiments, the inner boot 3 also includes an insole 34, which covers the foam layer 332 and is sized to match the inner sole of the inner boot 3. This provides additional soft cushioning and, together with the foam layer 332, forms a double-layer cushioning system to reduce foot pressure and make the feet more comfortable during long walks or standing. At the same time, the insole 34 fits snugly to the insole, protecting the surface of the foam layer 332 from direct friction from the foot, extending the life of the foam layer 332. The insole 34 is also removable and washable for easy daily maintenance, keeping the inside of the boot dry and hygienic.

[0055] In some alternative embodiments, the inner boot 3 has a pull ring near its opening for pulling the inner boot 3 to put on and take off. The pull ring provides a gripping point for the wearer, making it easier to pull the inner boot 3 into the boot, which is more effortless and convenient to operate.

[0056] Combination Figures 1 to 2 As shown, in some optional embodiments, the boot shaft height of the outer boot 2 is higher than that of the inner boot 3, so that the boot shaft of the outer boot 2 covers the top of the boot shaft of the inner boot 3, forming a natural overlapping area, which prevents cold air, wind, snow or snow water from directly invading from the boot opening, further improving the temperature stability inside the boot and enhancing the cold protection effect.

[0057] Specifically, the outer protective layer 21 covers the upper of the outer boot 2 and is made of rubber to prevent external impact and abrasion; the waterproof layer 22 covers the upper and shaft of the outer boot 2 and is made of Oxford cloth with a waterproof membrane coating on its outer surface to prevent water vapor from penetrating through siphoning; the intermediate heat insulation layer 23 covers the upper and shaft of the outer boot 2 and is made of foamed rubber to insulate against external low temperatures; the waterproof sealing sock liner 24 covers the sole, upper, and shaft of the outer boot 2 to enhance waterproof sealing and prevent water vapor from entering the outer boot 2; and the bottom heat insulation pad 25 covers the sole of the outer boot 2 to insulate against the low temperature of the ground.

[0058] The outer protective layer 21 is made of rubber, giving it excellent abrasion resistance and impact resistance, effectively preventing damage to the boot surface from external stones, snow, and mechanical friction. Simultaneously, the rubber's inherent waterproof properties prevent meltwater from seeping into the boot. The outer protective layer 21 can be 1.6mm thick, ensuring both the rubber layer's flexibility and providing sufficient support to maintain the boot's shape and prevent deformation or collapse.

[0059] The waterproof layer 22 is made of Oxford cloth, specifically anti-siphon FY-900 Oxford cloth, and coated with a waterproof membrane (such as PU waterproof coating) on ​​the outer surface. The anti-siphon treatment can prevent water vapor from penetrating into the interior of the outer boot 2 along the capillary action of the fibers. At the same time, the tear resistance of the Oxford cloth can work in synergy with the outer protective layer 21 to improve the overall durability of the boot.

[0060] The middle insulation layer 23 is made of foamed rubber, specifically styrene-butadiene foamed rubber (made by fusing styrene-butadiene rubber particles with other raw materials). Its cells have an independent closed-cell structure, low thermal conductivity, and excellent cold insulation effect. The thickness of the middle insulation layer 23 can be 5mm, effectively slowing down the conduction of heat from inside the shoe to the outside and blocking the entry of low external temperatures into the boot, forming a highly efficient cold-proof and heat-insulating layer.

[0061] The waterproof sealing sock liner 24 uses a dynamic waterproof membrane that covers the entire outer boot 2. It maintains highly efficient waterproof sealing performance even in extremely cold environments, effectively preventing moisture, snow, or meltwater from seeping into the outer boot 2, thereby enhancing the overall cold-weather and waterproof capabilities of the boot. This waterproof membrane is available in 0.05mm thickness options; it is thin yet flexible, deforming with the boot and foot movements without breaking, ensuring both comfort and durability.

[0062] The bottom insulation pad 25 is made of a flexible insulation material mainly composed of nano-silica or metal aerogel, and reinforced with glass fiber, pre-oxidized fiber and other materials. This bottom insulation pad 25 has a low thermal conductivity and its insulation performance is about 2 to 5 times higher than that of traditional materials. It significantly blocks the conduction of low ground temperature into the shoe, further improving the bottom insulation performance.

[0063] In some optional embodiments, the waterproof sealing sock 24 is provided with a locking seal at the boot opening of the outer boot 2. The locking seal can tightly seal the boot opening of the waterproof sealing sock 24, forming a reliable top sealing barrier, improving the overall cold protection and waterproof performance of the boot, effectively blocking cold wind, snow water or melted snow water from entering the interior of the outer boot 2 from the boot opening. At the same time, after the boot opening of the outer boot 2 is sealed, heat loss from the top of the boot shaft can be reduced, enhancing the insulation effect inside the boot.

[0064] Specifically, an adjustable Velcro strap is provided at the boot opening of the waterproof sealing sock 24. The boot opening is tightly closed by wrapping and gluing, and the tightness can be adjusted according to the wearer's foot shape, taking into account both sealing performance and ease of putting on and taking off.

[0065] In some other implementations, an elastic band or elastic cord is provided at the boot opening of the waterproof sealing sock 24. By tightening, the boot opening is made to fit snugly against the leg. The elastic structure can dynamically stretch and contract with the movement of the leg, maintaining a seal without affecting comfort.

[0066] In some optional embodiments, the outsole 1 of the boot is made of rubber, and the anti-slip structure 11 on its bottom surface is provided with anti-slip particles; wherein, the rubber material itself has a good coefficient of friction, and still maintains a certain elasticity at low temperatures, without excessive hardening, thereby increasing the adhesion to ice, snow, and slippery surfaces; the anti-slip structure 11 on the bottom surface of the outsole 1 uses anti-slip particles to further increase the contact friction with the ground, reduce the risk of slipping, and ensure walking safety in extremely cold environments.

[0067] Furthermore, anti-slip textures can be added to the bottom surface of the boot outsole 1 to ensure anti-slip effect.

[0068] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cold-resistant, waterproof, and warm-weather boot, characterized in that, include: The outsole (1) of the boot has an anti-slip structure (11) on its bottom surface, and the upper surface of the outsole (1) is provided with a flange (12) extending upward along its periphery. The outer boot (2) is sealed to the flange (12) at its bottom. The outer boot (2) and the outsole (1) of the boot form a hollow heat-insulating cavity (13) for isolating the low temperature of the ground. The outer boot (2) includes an outer protective layer (21), a waterproof layer (22), a middle heat-insulating layer (23) and a waterproof sealing sock (24) from the outside to the inside. Each layer is bonded to each other to form an outer shell with supporting strength for waterproofing, windproofing and isolation from external cold air. The bottom of the outer boot (2) is provided with a bottom heat-insulating pad (25) on the side opposite to the outsole (1) of the boot. The inner boot (3) is detachably installed inside the outer boot (2) and fits against the inner wall of the outer boot (2). The inner boot (3) includes a heat-locking composite layer (31), a heat-insulating layer (32) and a breathable composite layer (33) from the outside to the inside. Each layer is bonded together to form a flexible inner shell for locking in the foot temperature, keeping it warm and dissipating moisture.

2. The cold-resistant, waterproof, and warm-weather boots according to claim 1, characterized in that, The heat-locking composite layer (31) covers the sole, upper, and shaft of the inner boot (3), and from the outside to the inside, it includes: The first silver film layer (311) is a continuous and dense metal film structure; A wool blended felt layer (312) is disposed on the inner side of the first silver film layer (311); The second silver film layer (313) is disposed on the inner side of the wool blended felt layer (312), and multiple through holes are provided on the second silver film layer (313). The heat reflected by the first silver film layer (311) is conducted inward through the wool blended felt layer (312) and locked in the insulation layer (32) through the through holes of the second silver film layer (313).

3. The cold-resistant, waterproof, and warm-weather boots according to claim 1, characterized in that, The insulation layer (32) covers the upper and shaft of the inner boot (3), and uses insulation cotton with a unit area weight of not less than 400g / m². The insulation layer (32) is not less than 8mm thick and has a thermal insulation coefficient of not less than 1.

8. Furthermore, its thermal resistance is not less than 0.28 m²·K / W.

4. The cold-resistant, waterproof, and cold-proof boots according to claim 1, characterized in that, The breathable composite layer (33) includes a sandwich mesh layer (331) and a foam layer (332): The sandwich mesh layer (331) covers the boot upper and boot shaft of the inner boot (3), and from the outside to the inside, it includes an outer mesh layer, a connecting wire layer and an inner mesh layer, forming a breathable channel; The foam layer (332) covers the sole of the inner boot (3), forming an in-boot moisture management structure for wicking away moisture and keeping the sole dry, while providing cushioning and comfort.

5. The cold-resistant, waterproof, and cold-proof boots according to claim 4, characterized in that, The inner boot (3) also includes an insole (34) which covers the foam layer (332) and whose size matches the inner bottom size of the inner boot (3).

6. The cold-resistant, waterproof, and cold-proof boots according to claim 1, characterized in that, The inner boot (3) has a pull ring near its opening for pulling the inner boot (3) to put on and take off.

7. The cold-resistant, waterproof, and warm-weather boots according to claim 1, characterized in that, The boot height of the outer boot (2) is higher than that of the inner boot (3).

8. The cold-resistant, waterproof, and winter-proof boots according to claim 1, characterized in that, The outer protective layer (21) covers the upper of the outer boot (2) and is made of rubber material to prevent external impact and wear; The waterproof layer (22) covers the upper and shaft of the outer boot (2), and is made of Oxford cloth with a waterproof membrane coating on its outer surface to prevent water vapor from penetrating through siphon action. The middle heat insulation layer (23) covers the upper and shaft of the outer boot (2), and is made of foamed rubber to insulate against the low temperature outside. The waterproof sealing sock (24) covers the sole, upper and shaft of the outer boot (2) to enhance waterproof sealing and prevent moisture from entering the outer boot (2); The bottom heat insulation pad (25) covers the sole of the outer boot (2) and is used to insulate against the low temperature of the ground.

9. The cold-resistant, waterproof, and warm-weather boots according to claim 8, characterized in that, The waterproof sealing sock (24) is provided with a locking seal at the opening of the outer boot (2).

10. The cold-resistant, waterproof, and warm-weather boots according to any one of claims 1-9, characterized in that, The outsole (1) of the boot is made of rubber, and the anti-slip structure (11) on its bottom surface is provided with anti-slip particles.

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