Special fiber cloth-based modular military thermal insulation boots and manufacturing method thereof
By using modular design and high-silica fiber cloth, the contradiction between heat preservation and mobility in military boots under extreme environments has been resolved. This has achieved ultimate passive heat preservation, all-terrain adaptability and active fire protection, improved comfort and tactical mobility, and reduced maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- YINCHUAN NAS RENJIA TRADING CO LTD
- Filing Date
- 2026-03-06
- Publication Date
- 2026-06-05
AI Technical Summary
Existing military boots suffer from problems such as a conflict between insulation and mobility, limited functionality, insufficient comfort, and lack of active protection in extremely cold, slippery, and high-temperature environments. In particular, traditional padded insulated boots are bulky, electrically heated boots have short battery life, and anti-slip crampons are slow to react and do not have active fire protection capabilities.
The modular heat-insulating liner, made of high-silica fiber cloth as the core material, is combined with a retractable anti-slip steel stud mechanism and a pluggable active heating module. It is designed as a three-layer modular system, including a composite functional sole, a core passive heat-insulating liner and a boot frame, and solves the problem of sweating through a moisture management channel and an active ventilation system.
It achieves ultimate passive insulation, all-terrain adaptability, active fire protection and intelligent comfort, improves tactical mobility, reduces total life cycle cost and facilitates field maintenance.
Smart Images

Figure CN122140050A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of individual soldier protective equipment technology, specifically to a military multi-functional thermal boot suitable for extremely cold, slippery and potentially high-temperature environments, and more particularly to a military thermal boot with a special fiber cloth as the core passive heat insulation material, integrated retractable anti-slip steel studs, and modularly equipped with an active heating system, as well as its manufacturing method. Background Technology
[0002] In military operations in cold regions and complex terrains, foot protection is crucial for maintaining combat effectiveness. Existing military boots suffer from the following shortcomings: The conflict between insulation and mobility: Traditional padded insulated boots are bulky and cumbersome, severely hindering tactical movements. Existing electrically heated boots rely on batteries, have short battery life, and weak passive insulation capabilities; once the power is cut off, they become "dead weight."
[0003] Limited functionality: General-purpose combat boots cannot simultaneously cope with multiple extreme environments such as extreme cold, ice surfaces, and fires. Anti-slip crampons need to be carried and worn separately, resulting in slow reaction times.
[0004] Insufficient comfort: The heavy insulation material hinders perspiration, which can easily lead to non-combat casualties such as "trench foot".
[0005] Lack of active protection: Most military boots do not have active fire protection capabilities and are difficult to cope with sudden heat hazards such as battlefield explosions and fires.
[0006] Currently, there is no publicly available technical solution that applies special fiber cloth, a high-performance heat-insulating and fire-resistant material, to military boots in a modular and systematic manner, and integrates a retractable anti-slip mechanism to solve the aforementioned comprehensive problems. Summary of the Invention
[0007] This invention aims to provide a next-generation military insulated boot that integrates ultimate passive insulation, active fire prevention, all-terrain anti-slip properties, and intelligent temperature control, thereby completely resolving the aforementioned contradictions through material innovation and system design.
[0008] To achieve the above objectives, the present invention provides the following technical solution: A modular military insulated boot based on special fiber cloth is characterized by comprising a detachable heat-insulating inner liner made of high-silica fiber cloth as the core material, and a retractable anti-slip steel stud mechanism integrated inside the sole.
[0009] Furthermore, a physical gap channel is formed between the heat-insulating inner liner and the boot body to guide moisture from the feet upwards.
[0010] Furthermore, the heat-insulating inner liner is integrated with an electrical connection interface for pluggable connection to an external active heating power supply module.
[0011] Furthermore, the retractable anti-slip steel stud mechanism includes a housing, multiple alloy steel studs, a linkage drive mechanism, and a shoe side slider, which allows the steel studs to switch between retracted and extended positions and lock.
[0012] Furthermore, the heat-insulating inner liner is composed of a skin-friendly moisture-wicking layer, a buffer layer, a flexible heating element layer, a core heat-insulating layer, a shaping protective layer, and a USB protective layer stacked sequentially.
[0013] Furthermore, the boot body includes an outer layer, a waterproof and breathable layer, a structural support layer, a battery compartment, a quick-connect female connector, a moisture management channel, and an integrated small fan and ventilation system.
[0014] A method for manufacturing the military insulated boots includes the steps of separately manufacturing the insulated liner, the sole with a steel stud mechanism, and the boot body with an integrated interface and a ventilation system, and then assembling them together.
[0015] Compared with the prior art, the present invention has the following significant advantages: 1. Revolutionary passive insulation: The extremely low thermal conductivity of the high-silica fiber cloth creates a highly efficient thermal barrier, and its insulation performance in a passive state far exceeds that of existing military boots.
[0016] 2. Built-in all-terrain adaptability: The one-button retractable steel spike system integrates crampon functionality, enabling instantaneous switching between ice and muddy terrain, enhancing tactical mobility.
[0017] 3. True active fire protection: The high-silica fiber cloth is heat resistant to over 1000°C, providing soldiers with valuable fire escape protection.
[0018] 4. Intelligent comfort and reliability: The modular design makes the heating system an optional plug-in, turning it into a highly reliable passive insulated boot when not in use; the unique "moisture upward exhaust" system and active ventilation system solve the problem of sweating in heavy insulated boots.
[0019] 5. Efficient logistics and maintenance: The heat-insulating inner liner, battery, and sole module can all be replaced independently, reducing the total life cycle cost and facilitating field maintenance. Attached Figure Description
[0020] Figure 1 Side view of the overall appearance of the military insulated boot of this invention.
[0021] Figure 2 : A full sectional view along the centerline of Figure 1; Figure 3 : Explosive disassembly diagram of the core heat-insulating inner liner module; Figure 4 : A bottom view of the composite functional sole module and a schematic diagram of the retracted and extended state of the steel nails (left is retracted, right is extended); Figure 5 A partially enlarged cross-sectional view illustrating the working principle of the moisture management channel; Figure 6 : Structural diagram of modular electrical connection interface; Figure 7 Schematic diagram of a small fan and ventilation system.
[0022] Illustration markings: 1. Side view of the shoe, 2. Military-grade protective layer, 3. Cushioning protective layer, 4. Large view, 5. Outsole along the central axis, 6. Multifunctional shoe, 7. Support layer, 8. Thermal core liner, 9. Calf-shaped protective layer, 10. Battery compartment, 11. Outsole; 12. Skin-friendly moisture-wicking layer; 13. Soothing layer; 14. Flexible heating element layer; 15. High-silica fiber cloth (heat-resistant core); 16. Shaping and protective layer; 17. USB protective layer. 18. Steel needle retracted (retracted state), 19. Side needle sliding (extended state), 20.8mm (steel nail extension height), 21.12 Alloy block (steel nail material); 22.3-5mm (width of moisture channel), 23. Ventilation and drainage holes; 24. Male head of inner liner at the heel; 25. Female head of worm gear; 26. Battery compartment; 27. Modular electrical connection interface; 28. Military-grade thermal shoes; 29. Small fan; 30. Miniature channel; 31. Sound fan; 32. Channel; 33. Current; 34. Power compartment; 35. Airflow system; 36. Integrated diameter 3cm (fan diameter). Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0024] This invention proposes a special fiber-based modular military insulated boot, characterized by its core feature being the construction of a three-layer modular system: The overall system of the military insulated boots consists of three relatively independent modules: a composite functional sole module, a core passive heat insulation liner module, and a boot frame and integrated outer cover module, as well as an optional active heating and control module.
[0025] Multifunctional shoe sole module: Wear-resistant and slip-resistant outsole (11): Made with ultra-low temperature rubber formula, featuring deep tooth pattern; Retractable steel nail system: One of the key features of this invention. Includes: Shell: Made of high-strength composite material; Multiple alloy steel studs (21): evenly distributed in the forefoot and heel bearing areas, extending 8mm (20); Linkage drive mechanism: Controlled by the slider on the side of the shoe, all steel spikes can be switched synchronously between two positions: "retracted" (18, flush with the sole, for regular walking) and "extended" (19, protruding 5-10mm from the bottom, for ice surfaces and steep slopes), and it also has a position locking function. Cushioning and base puncture-resistant layer: Located above the steel nail system, it provides cushioning and protection against ground punctures.
[0026] Core passive heat insulation inner liner module (8): Main structure: It is a three-dimensional "sock cover" that can be removed as a whole; This is the core innovation of the invention. Hierarchical structure (from inside to outside): Skin-friendly moisture-wicking layer (12): Flame-retardant merino wool or Coolmax® fabric, manages foot sweat; Buffer layer (13) (optional): locally laid memory foam, located at the arch and heel; Flexible heating element layer (14) (optional): carbon fiber heating element, pre-installed on the forefoot and back of the foot; Core insulation layer (15): at least one layer of high-silica fiber cloth. This is the basic material for achieving ultimate passive insulation and active fire protection; Shaping protective layer (16): Thin flame-retardant cloth, which wraps around and fixes the above layers; USB protective layer (17): Protects electrical connections; Fixing and interface: Each layer is fixed by quilting with aramid flame retardant thread. A military-grade waterproof electrical quick-connect male connector (24) is pre-embedded in the heel of the inner liner and connected to the heating element layer (14). The upper edge of the inner liner (at the ankle) is fixed to the boot body by Velcro or snap fasteners.
[0027] Boot frame and integrated outer cover module (1): Outer layer: Flame-retardant cowhide (high-wear areas) spliced with flame-retardant Cordura® nylon; Waterproof and breathable layer: ePTFE film (such as Gore-Tex®), laminated on the inside of the outer layer; Structural support layer (7): provides boot-shaped support; Modular integration interface: Battery compartments (10, 26, 34): located in the boot barrel, with conductive contacts inside; Quick-connect female connector (25): precisely matches the inner male connector (24); Moisture management channel: the second key point of this invention. A physical gap of 3-5mm (22) is designed between the top of the inner liner module (8) and the outer cover to guide the sweat vapor from the feet to flow upward and finally be discharged outside the boot through the ventilation and drainage holes (23) at the top of the boot shaft, thereby solving the problem of stuffiness caused by the non-breathable special fiber cloth; Small fan and ventilation system (28, 29, 30, 31, 32, 33, 35, 36): Integrated into the boot shaft, including a small fan (29, 36) with a diameter of 3cm, a micro channel (30, 31, 32) and an air guide system (35), powered by an electrical compartment (34) (33), for active ventilation and dehumidification.
[0028] Active heating and control module (optional plug-in): Includes a rechargeable battery pack and a smart thermostat. Inserting the battery into the battery compartment (10, 26, 34) completes the circuit connection, enabling functions such as heating, temperature adjustment, and power display.
[0029] Referring to the attached diagram, taking the model equipped with an active heating module as an example: Manufacturing the inner liner: Stack the layers (12-17) as shown in Figure 3, insert the heating element (14), quilt and shape it, and install the quick-connect male connector (24).
[0030] Manufacturing the boot body: stitch the outer layer, waterproof layer, and structural layer (7), and install the quick-connect female head (25) and battery compartment (10,26, 34), ensuring that the moisture passage (22, 23) is unobstructed, while integrating a small fan and ventilation system (28-36).
[0031] Manufacturing the sole: The steel nail system (18-21) is assembled into the shell and then combined with the cushioning layer and outsole (11).
[0032] Final assembly: Insert the inner liner (8) into the boot body (1) and connect the male and female toe caps (24, 25). Attach the boot body to the sole (11, 18-21) using adhesive and sewing. Finally, insert the active module into the battery compartment (10, 26, 34).
[0033] Use: Slide the slider on the ice to extend the steel spikes (19, 20); pull out the active module at the campsite to save power; for everyday walking, the system functions as a top-of-the-line passive fireproof and heat-insulating boot.
[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.
Claims
1. A modular military insulated boot based on special fiber fabric, characterized in that, It includes a removable heat-insulating inner liner made of high-silica fiber cloth as the core material, and a retractable anti-slip steel stud mechanism integrated inside the sole.
2. The insulated boot according to claim 1, characterized in that, A physical gap channel is formed between the heat-insulating liner and the boot body to allow moisture from the feet to be directed upwards.
3. The insulated boot according to claim 1 or 2, characterized in that, The heat-insulating inner liner has an integrated electrical connection interface for pluggable connection to an external active heating power supply module.
4. The insulated boot according to claim 1, characterized in that, The retractable anti-slip steel nail mechanism includes a shell, multiple alloy steel nails, a linkage drive mechanism, and a shoe side slider, which allows the steel nails to switch between two positions: retracted and extended, and then lock.
5. The insulated boot according to claim 1, characterized in that, The heat-insulating inner liner is composed of a skin-friendly moisture-wicking layer, a buffer layer, a flexible heating element layer, a core heat-insulating layer, a shaping protective layer, and a USB protective layer stacked in sequence.
6. The insulated boot according to claim 1, characterized in that, The boot body includes an outer layer, a waterproof and breathable layer, a structural support layer, a battery compartment, a quick-connect female connector, a moisture management channel, and an integrated small fan and ventilation system.
7. A method for manufacturing military insulated boots as described in any one of claims 1-6, characterized in that, The process includes manufacturing the heat-insulating inner liner, the sole with a steel nail mechanism, and the boot body with an integrated interface and ventilation system, and then assembling them together.