An ultra-thin, silent, cool outdoor pant

Abstract

The utility model discloses a kind of super-thin mute cool outdoor trousers, comprising: trousers body, waist and two leg parts, the leg part includes thigh and knee part; Honeycomb sheet is set to the outside area of thigh to knee part, the honeycomb sheet includes outer layer, middle layer, inner layer sequentially arranged from outside to inside;The outer layer is tear-resistant layer with thickness.‑.mm, the utility model is by in dynamic adjustment air permeability and heat dissipation efficiency, adopt honeycomb sheet structure, set to thigh to knee cap outside side etc. High load area of movement. Honeycomb sheet is composed of three-layer composite structure: tear-resistant outer layer, D support net rack middle layer and wet inner layer. Among them, outer layer is formed by laser cutting gradient distribution hexagonal hole array, so that different parts realize different ventilation effect according to the difference of exercise intensity.

Description

Technical Field

[0001] This utility model relates to an ultra-thin, quiet, and cool outdoor trousers, belonging to the field of outdoor trousers technology. Background Technology

[0002] In recent years, with the improvement of people's living standards and the enhancement of health awareness, outdoor sports have gradually become a fashionable lifestyle. The popularization and diversification of outdoor sports have driven the rapid development of the outdoor clothing market. As an important part of outdoor sports, outdoor clothing is designed to cope with the complex and ever-changing characteristics of the outdoor environment and protect the human body from the effects of harsh environments.

[0003] With the increasing popularity of outdoor sports and lightweight urban lifestyles, ultra-thin functional outdoor pants have become core equipment for coping with complex environments. Typical applications include dynamic, high-intensity activities such as mountain climbing, urban cycling, and high-temperature work. As functional equipment for complex environments, outdoor pants have long faced the technical challenge of balancing breathability, comfort, and durability.

[0004] Traditional ultra-thin outdoor pants mostly use single-layer chemically coated fabrics, which, while providing basic waterproof and breathable functions, are limited by their homogeneous pore structure, making it difficult to dynamically regulate airflow. This leads to problems such as stuffiness, sweat buildup, and reduced protective performance during exercise. Some products improve heat dissipation efficiency through mechanical ventilation designs such as zipper opening and closing or electric fans, but the aerodynamic noise significantly affects the user experience, and the additional energy consumption and structural redundancy restrict the need for lightweight design.

[0005] In addition, conventional sewing processes are prone to producing abnormal noises from fabric friction during dynamic activities, accompanied by localized deformation and deterioration of breathability caused by stress concentration. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an ultra-thin, quiet, and cool outdoor trousers to solve the problems of the existing technology.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] A type of ultra-thin, quiet, and cool outdoor trousers, comprising: a main body, a waistband, and two legs, wherein the legs include the thighs and knees;

[0009] A honeycomb sheet is disposed in the outer region from the thigh to the knee, the honeycomb sheet comprising an outer layer, a middle layer, and an inner layer arranged sequentially from the outside to the inside;

[0010] The outer layer is a tear-resistant layer with a thickness of 0.1-0.15mm. The surface of the outer layer is provided with an array of hexagonal through holes formed by laser cutting. The diameter of the hexagonal through holes is 0.8mm, and the hole density is distributed in a gradient along the longitudinal direction.

[0011] The middle layer is a 3D support frame layer with a thickness of 0.3-0.5mm. The 3D support frame layer is composed of multiple asymmetrical wavy ribs with a height difference of 0.2mm-0.4mm. Adjacent ribs form air guiding channels.

[0012] The inner layer is a moisture-wicking layer with a thickness of 0.05mm-0.08mm, and the surface of the inner layer is provided with raised particles with a density of 200-250 particles / cm².

[0013] A heat dissipation strip is longitudinally disposed on the rear side of the leg, the heat dissipation strip including a diamond-shaped mesh base layer;

[0014] And unidirectional opening and closing scales covering the rhomboid mesh base layer;

[0015] The one-way opening and closing scales include an outer TPU hydrophobic layer and an inner cellulose moisture-absorbing layer that adheres to the skin. The cellulose moisture-absorbing layer absorbs sweat and expands, while the TPU hydrophobic layer remains in place, causing the one-way opening and closing scales to curl outwards.

[0016] As a further improvement, the edge of the cellulose moisture-absorbing layer is provided with fine fibers that absorb sweat.

[0017] The opening angle range of the unidirectional opening and closing scales is 30°-45°.

[0018] As a further improvement, the rib height of the 3D support grid layer is distributed in an arithmetic sequence along the airflow direction, with a tolerance of 0.05mm-0.08mm.

[0019] As a further improvement, the outer layer pore density of the thigh portion is 110-130 pores / cm², and the outer layer pore density of the knee portion is 70-90 pores / cm².

[0020] As a further improvement, the outer layer has a passivation layer of 0.02mm-0.05mm at the edge of the hexagonal through-hole.

[0021] As a further improvement, the inner layer of protruding particles has a pyramidal structure with a bottom diameter of 0.08mm-0.12mm and a spacing between adjacent particles of 1.5-2 times the particle height. The surface of the protruding particles 311 is provided with a nano-scale hydrophobic coating with a contact angle >150°.

[0022] As a further improvement, the waist section is provided with multiple sets of annular flow channels with a tapered cross-section, an inlet width of 1.2 mm and an outlet width of 0.6 mm, and the flow channels are filled with phase change energy storage material. Beneficial effects

[0023] This invention utilizes a honeycomb structure to dynamically adjust breathability and heat dissipation efficiency, positioned in high-load areas such as the outer thighs and knees. The honeycomb structure consists of a three-layer composite structure: a tear-resistant outer layer, a D-support mesh middle layer, and a moisture-wicking inner layer. The outer layer is laser-cut to form a gradient array of hexagonal through-holes, allowing for differentiated ventilation effects in different areas based on varying activity levels.

[0024] For example, the thigh area experiences high activity levels, so a higher perforation density is used to enhance ventilation; while the knee area has relatively less activity, so a lower perforation density is used to maintain basic protection. This structural design effectively responds to dynamic environmental changes, avoiding the noise and energy consumption problems associated with traditional zipper or fan systems, while also achieving a lightweight design.

[0025] Secondly, regarding aerodynamic optimization and quiet operation, the middle layer employs a 3D support mesh structure composed of asymmetrical wave ribs. This not only enhances the overall structural elasticity and support but also creates guiding channels extending along the airflow direction, helping to guide sweat evaporation and heat dissipation while reducing frictional noise caused by turbulent airflow. Combined with the heat dissipation band structure on the back of the legs, this further enhances directional heat dissipation capabilities and avoids the noise issues caused by fabric friction in conventional sewing processes, thus significantly improving quiet comfort during wear.

[0026] Third, regarding moisture wicking and skin-friendly comfort, the inner layer uses a thermo-pressed raised particle structure, which reduces the contact area between the skin and the fabric, preventing the sticky feeling caused by sweat retention and improving dryness. Meanwhile, the one-way opening and closing scale structure on the back of the legs senses sweat through the cellulose moisture-absorbing layer and deforms, automatically opening heat dissipation channels to expel moisture from the inside. The TPU hydrophobic layer prevents external rainwater penetration, thus achieving a sensor-based "exhaust-only" function. Furthermore, the edges of the cellulose layer have a fine fleece structure that quickly absorbs and diffuses sweat, further accelerating the evaporation rate and improving wearing comfort.

[0027] Finally, regarding structural stability and durability, the layers of the honeycomb sheet are mutually supported by their physical structure, avoiding the problems of easy aging and decreased moisture permeability found in traditional coated fabrics. The diamond-shaped mesh base layer woven from shape memory alloy wires has good elasticity and resilience, adapting to frequent bending and stretching during movement, and is less prone to deformation or decreased breathability due to stress concentration, thus extending the product's service life. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a front structural diagram of an ultra-thin, quiet, and cool outdoor trousers according to this utility model.

[0030] Figure 2 This is a schematic diagram of the back structure of an ultra-thin, quiet, and cool outdoor trousers according to this utility model.

[0031] Figure 3 yes Figure 2 A schematic diagram of the enlarged cross-section of the structure at point A.

[0032] Figure 4 yes Figure 3 A magnified side view of the outer layer.

[0033] Figure 5 yes Figure 3 A magnified side view of the middle layer.

[0034] Figure 6 yes Figure 3 A magnified side view of the inner layer.

[0035] Figure 7 yes Figure 2 Enlarged structural diagram of the structure at point B.

[0036] Figure 8 yes Figure 7 A side view of the enlarged cross-section of the structure at point C.

[0037] Figure 9 yes Figure 2 A schematic diagram of the enlarged cross-section of the structure at point D.

[0038] 1. Main body of the pants; 2. Waist; 3. Legs; 31. Thigh; 32. Knee; 33. Honeycomb sheet; 10. Outer layer; 20. Middle layer; 30. Inner layer; 11. Hexagonal through-hole; 21. Rib; 22. Channel; 311. Protruding particles; 40. Heat dissipation strip; 41. Mesh base layer; 42. One-way opening and closing scales; 12. Passivation treatment layer; 321. Nanoscale hydrophobic coating; 70. Annular flow channel; 71. Phase change energy storage material. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0040] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] Reference Figure 1-9 As shown, a type of ultra-thin, quiet, and cool outdoor pants includes:

[0042] The pants consist of a main body 1, a waistband 2, and two legs 3, wherein the legs 3 include a thigh 31 and a knee 32;

[0043] A honeycomb sheet 33 is disposed on the outer region from the thigh 31 to the knee 32. The honeycomb sheet 33 includes an outer layer 10, a middle layer 20 and an inner layer 30 disposed sequentially from the outside to the inside.

[0044] The outer layer 10 is a tear-resistant layer with a thickness of 0.1-0.15 mm. The surface of the outer layer 10 is provided with an array of hexagonal through holes 11 formed by laser cutting. The diameter of the through holes 11 is 0.8 mm, and the hole density is distributed in a gradient along the longitudinal direction. The hole density of the outer layer 10 of the thigh part 31 is 110-130 holes / cm², and the hole density of the outer layer 10 of the knee part 32 is 70-90 holes / cm².

[0045] The middle layer 20 is a 3D support grid layer with a thickness of 0.3-0.5mm. The 3D support grid layer is composed of multiple asymmetrical wavy ribs 21. The height difference of the ribs 21 is 0.2-0.4mm. Adjacent ribs 21 form air guiding channels 22.

[0046] The inner layer 30 is a moisture-wicking layer with a thickness of 0.05-0.08 mm. The surface of the inner layer 30 is provided with hot-pressed protruding particles 311, and the density of the protruding particles 311 is 200-250 particles / cm².

[0047] A heat dissipation strip 40 is longitudinally arranged on the rear side of the leg 3. The heat dissipation strip 40 includes a diamond-shaped mesh base layer 41 woven from shape memory alloy wires. The mesh unit size of the diamond-shaped mesh base layer 41 is 4×4mm to 6×6mm.

[0048] And unidirectional opening and closing scales 42 covering the rhomboid mesh base layer 41;

[0049] The one-way opening and closing scale 42 includes an outer TPU hydrophobic layer 421 and an inner cellulose moisture-absorbing layer 422 that adheres to the skin. The cellulose moisture-absorbing layer 422 absorbs sweat and expands, while the TPU hydrophobic layer 421 remains in a fixed state, causing the one-way opening and closing scale 42 to curl outward.

[0050] The edge of the cellulose moisture-absorbing layer 422 is provided with fine fibers 4221, which absorb sweat.

[0051] By dynamically adjusting breathability and heat dissipation efficiency, a honeycomb sheet 33 structure is adopted and placed in high-load areas such as the outer thigh and knee. The honeycomb sheet 33 consists of a three-layer composite structure: a tear-resistant outer layer 10, a 3D support mesh middle layer 20, and a moisture-wicking inner layer 30. Among them, the outer layer 10 is laser-cut to form a gradient distribution of hexagonal through-holes 11, so that different parts can achieve differentiated ventilation effects according to the difference in exercise intensity.

[0052] For example, the thigh section 31, with its high activity level, has a higher perforation density to enhance ventilation; while the knee section 32, with relatively low activity level, has a lower perforation density to maintain basic protection. This structural design effectively responds to dynamic environmental changes, avoiding the noise and energy consumption problems associated with traditional zipper or fan systems, while achieving a lightweight design.

[0053] Secondly, in terms of aerodynamic optimization and quiet operation, the middle layer 20 adopts a 3D support mesh structure composed of asymmetrical wave ribs 21. This not only enhances the elasticity and support of the overall structure but also forms guide channels 22 extending along the airflow direction, which helps guide sweat evaporation and heat dissipation while reducing friction noise caused by turbulent airflow. Combined with the heat dissipation band 40 structure on the back of the leg 3, it further enhances directional heat dissipation capabilities and avoids the abnormal noise caused by fabric friction in conventional sewing processes, thereby significantly improving quiet comfort during wear.

[0054] Third, regarding moisture wicking and skin-friendly comfort, the inner layer 30 employs a thermo-pressed raised particle structure 311, which reduces the contact area between the skin and the fabric, preventing the stickiness caused by sweat retention and improving dryness. Simultaneously, the one-way opening and closing scale structure 42 on the back of the leg 3 senses sweat through the cellulose moisture-absorbing layer and deforms, automatically opening the heat dissipation channel 22 to expel moisture from the inside. The TPU hydrophobic layer prevents external rainwater penetration, thus achieving a sensor-based "exhaust-only" function. Furthermore, the edges of the cellulose layer have a fine fleece structure that quickly absorbs and diffuses sweat, further accelerating the evaporation rate and enhancing wearing comfort.

[0055] Finally, in terms of structural stability and durability, the layers of the honeycomb sheet 33 are mutually supported by physical structure, avoiding the problems of easy aging and decreased moisture permeability of traditional coated fabrics. The diamond-shaped mesh base layer 41 woven with shape memory alloy wire has good elasticity and resilience, can adapt to frequent bending and stretching during movement, and is not prone to deformation or decreased breathability caused by stress concentration, thus extending the service life of the product.

[0056] The multi-layered structural design overcomes the technical contradictions inherent in traditional outdoor pants regarding breathability, comfort, durability, and noise reduction. It meets the needs of outdoor enthusiasts for high-performance gear and aligns with the trend towards lightweight urban lifestyles, possessing broad market application prospects.

[0057] The text specifically introduces the three-layer composite structure of the honeycomb panel 33, the gradient-distributed hexagonal through-holes 11, the asymmetric ribs 21 in the 3D support frame, the raised particles 311 in the inner layer 30, the heat dissipation strips 40 on the rear side of the leg 3, and its unidirectional opening and closing scales 42. These elements not only work together structurally but also achieve dynamic response and a balance of multiple performance characteristics.

[0058] The honeycomb panel 33 is located in the area from the thigh to the outer side of the knee, which experiences high stress during movement. It consists of a tear-resistant outer layer 10, a 3D support mesh middle layer 20, and a moisture-wicking inner layer 30. This multi-layered structure is designed to achieve a synergistic effect of protection, ventilation, and perspiration wicking.

[0059] The outer layer 10 is made of tear-resistant material to ensure abrasion and scratch resistance in outdoor environments;

[0060] The middle layer 20 is a 3D support frame, providing structural flexibility and air channels 22 to enhance the microclimate regulation capability inside the fabric;

[0061] The inner layer 30 is a moisture-wicking material that accelerates the transfer of sweat from the skin to the outside through its surface microstructure.

[0062] The three layers of material are not simply stacked together, but rather form a whole system through spatial layout and physical structure, so that the wearer can resist external aggressors and keep the skin dry and comfortable during high-intensity exercise.

[0063] On the outer layer 10 material, a hexagonal through-hole array 11 is formed by laser cutting technology, and the hole density gradient is designed according to the longitudinal position: the thigh 31 has a high hole density of 110–130 holes / cm², and the knee 32 has a lower density of 70–90 holes / cm².

[0064] The principle lies in the difference in heat and humidity generated by different parts of the body during movement. The thighs 31 generate a lot of heat due to frequent muscle activity, requiring higher ventilation efficiency; while the knees 32, although frequently active, accumulate relatively less heat, so the density of pores is appropriately reduced to maintain basic protection.

[0065] Compared to traditional circular or square holes, hexagonal structures offer better structural stability and airflow guidance, effectively preventing fabric tearing or deformation caused by localized stress concentration.

[0066] The height difference of the asymmetrical wavy ribs 21 in the middle layer 20 is controlled at 0.2–0.4 mm, and they are arranged to extend along the airflow direction to form air guiding channels 22.

[0067] The asymmetrical design guides airflow in a specific direction as it passes through, reducing turbulence and frictional resistance, thereby reducing fabric noise during movement.

[0068] The channels 22 formed between the wavy ribs 21 can accelerate the expulsion of moisture after sweat evaporation, while keeping the structure lightweight and not pressing on the skin.

[0069] The structure also has a certain buffering and resilience, which can maintain a stable ventilation path under bending or stretching conditions, avoiding the problem of reduced air permeability caused by stress concentration in traditional sewing processes.

[0070] The inner layer 30 has hot-pressed protruding particles 311 on its surface, with a density of 200–250 particles / cm².

[0071] The raised particles 311 reduce the contact area between the fabric and the skin, thereby reducing the damp, clingy feeling and improving dryness.

[0072] At the same time, tiny gaps are formed between the particles, which helps sweat to spread quickly and be discharged, preventing stuffiness and discomfort caused by local sweat accumulation.

[0073] The hot-pressing process ensures the stability of the granular structure, making it less prone to wear and tear during washing or use, thus improving the product's durability.

[0074] The heat dissipation strip 40 provided on the rear side of the leg 3 consists of a diamond-shaped mesh base layer 41 woven from shape memory alloy wires and unidirectional opening and closing scales 42 covering it.

[0075] Shape memory alloy wires have excellent elastic recovery properties, and can quickly return to their original shape after bending or stretching, thus avoiding structural deformation after prolonged movement.

[0076] The diamond mesh structure allows the fabric to stretch and contract freely with body movements, reducing stress concentration at seams.

[0077] The unidirectional opening and closing scale 42 is composed of a TPU hydrophobic layer and a cellulose moisture-absorbing layer. Its working principle is based on the moisture absorption and expansion characteristics of the materials.

[0078] When the human body sweats, the cellulose moisture-absorbing layer absorbs the sweat and expands, causing the entire scale to curl outwards and form a heat dissipation opening.

[0079] The TPU hydrophobic layer maintains its shape and prevents rainwater and other external liquids from seeping back in.

[0080] It achieves an intelligent sensing sweat-wicking mechanism that requires no additional energy to drive and relies solely on the physical response of the material itself to control opening and closing.

[0081] The fine downy structure at the edges of the scales further enhances the absorption rate of sweat, facilitates rapid diffusion and evaporation of moisture, and improves overall heat dissipation efficiency.

[0082] The unidirectional opening and closing scales 42 have an opening angle range of 30°-45°. When the human body sweats, the cellulose moisture-absorbing layer absorbs sweat and expands in volume, while the TPU hydrophobic layer remains unchanged, thus generating a bending moment that causes the entire scale to curl outwards. Due to the control of material combination and structural design, this curling angle is stable between 30° and 45°. The moderate opening angle forms an effective heat dissipation channel without allowing external rainwater or sand to enter due to an excessively large angle.

[0083] When not sweating, the scales remain closed, serving to protect against wind, water, and dust.

[0084] It requires no mechanical power and relies entirely on material response to achieve intelligent ventilation, improving wearing convenience and quiet experience.

[0085] The height of the ribs 21 of the 3D support grid layer is distributed in an arithmetic sequence along the airflow direction, with a tolerance of 0.05mm-0.08mm.

[0086] As the airflow moves along the direction of leg 3, the heat and humidity gradually increase. Therefore, by gradually increasing the height of rib 21, that is, increasing the space of air channel 22, the ever-increasing heat and humidity load can be matched, and local heat accumulation can be prevented.

[0087] It enhances the ability to direct and guide sweat, effectively improving the efficiency of sweat excretion after evaporation.

[0088] Reduce airflow resistance and decrease frictional noise caused by airflow turbulence;

[0089] The structure has good elastic support and can maintain a stable airflow channel 22 when bent or stretched, avoiding the air permeability deterioration problem in traditional sewing structures.

[0090] Because the thigh muscles 31 are frequently active and generate a lot of heat, a higher density of perforations is provided to enhance ventilation and heat dissipation; while the knee 32 is frequently active but generates relatively little heat, so the density of perforations is appropriately reduced to balance protection.

[0091] The outer layer of the thigh portion 31 has a pore density of 110-130 pores / cm², and the outer layer of the knee portion 32 has a pore density of 70-90 pores / cm².

[0092] It achieves dynamic zone adjustment function, which can automatically adjust the microclimate of the body surface according to the movement status without manual intervention;

[0093] It avoids the drawbacks of "excessive ventilation" or "insufficient ventilation" caused by traditional homogeneous porous structures;

[0094] While improving overall wearing comfort, it also enhances the durability and tear resistance of the fabric.

[0095] The outer layer 10 has a passivation layer 12 of 0.02-0.05 mm at the edge of the hexagonal through hole 11.

[0096] The edges of through-holes created by laser cutting may have burrs or stress concentration points, which can easily cause fabric tearing during use. By adding a nano-level passivation coating, sharp edges can be eliminated, while enhancing the stability of the material interface.

[0097] Effectively prevents tearing at the edges of through-holes, extending the lifespan of garments;

[0098] Reduces the discomfort of fabric rubbing against the skin, improving the skin-friendly feel when wearing it;

[0099] Meanwhile, the passivation layer has a certain degree of hydrophobicity, which helps to reduce the retention of water at the orifice and prevent water from seeping in and affecting the protective performance.

[0100] The inner layer 30 has a pyramid-shaped structure with a base diameter of 0.08-0.12 mm and a spacing between adjacent particles that is 1.5-2 times the particle height. The surface of the protruding particles 311 is coated with a nano-scale hydrophobic coating 321 with a contact angle >150°.

[0101] The pyramid-shaped particle structure minimizes the contact area between the fabric and the skin, thereby reducing the stuffiness caused by sweat adhesion.

[0102] The particle spacing is designed reasonably, which ensures air circulation space while avoiding a structure that is too sparse and thus reduces support.

[0103] The nano-scale hydrophobic coating 321 gives the surface superhydrophobic properties with a contact angle >150°, allowing sweat to spread rapidly on the surface and be guided to the outer layer 10 for excretion.

[0104] It significantly improves the dryness of the inner 30 fabric, keeping the skin dry even when sweating heavily;

[0105] To prevent sweat from accumulating on the fabric surface and forming condensation, thus avoiding discomfort caused by a drop in body temperature after exercise;

[0106] The hydrophobic coating also has antibacterial and antifungal properties, improving the product's hygiene and durability. The waistband 2 of the trousers is provided with an annular flow channel 70, which has a tapered cross-section with an inlet width of 1.2 mm and an outlet width of 0.6 mm. The flow channel 70 is filled with a phase change energy storage material 71, with a phase change temperature range of 28-32℃.

[0107] Phase change energy storage materials (71) are a class of functional materials that can absorb or release a large amount of heat through phase changes such as solid-liquid or liquid-gas within a specific temperature range. Their core characteristic is that the material temperature remains basically unchanged during the phase change process, but it can absorb or release a large amount of latent heat.

[0108] For example, when the ambient temperature rises to the set temperature, the PCM changes from a solid to a liquid state, absorbing heat without significantly increasing its temperature; when the ambient temperature drops, it condenses from a liquid to a solid state, releasing the heat it previously stored.

[0109] In this solution, the phase change energy storage material 71 has an operating temperature range of 28–32℃, which is close to the comfortable temperature range of human skin surface, making it particularly suitable for thermal management and microclimate regulation in outdoor clothing.

[0110] The waistband 2 of the trousers is equipped with an annular flow channel 7070, which has a tapered cross-section with an inlet of 1.2mm and an outlet of 0.6mm, and is filled with the aforementioned phase change energy storage material 7171. This design possesses the following rationality and functionality:

[0111] During exercise, the lower back is one of the areas where heat is concentrated, and it is easy for clothing to cause local stuffiness.

[0112] The phase change material located in the waist 2 undergoes a phase change reaction between 28 and 32°C, which is precisely the range of body surface temperature changes during mild to moderate exercise.

[0113] When body temperature rises, the phase change material absorbs heat and melts, slowing down the rate at which the body surface temperature rises; when exercise stops or the environment cools down, the material releases heat and solidifies, delaying the decrease in perceived body temperature, thereby maintaining a constant and comfortable wearing experience.

[0114] The tapered cavity design, with its wide inlet and narrow outlet, helps guide the direction of airflow, creating a localized micro-pressure difference and promoting directional heat transfer along the cavity.

[0115] This structure can accelerate the heat exchange rate between the phase change material and the external environment, thereby improving the response sensitivity.

[0116] At the same time, the tapered structure also plays a certain role in mechanical support, preventing the cavity from collapsing or deforming under pressure, and ensuring the stable distribution of the phase change material and its effective function.

[0117] The annular flow channel 70 surrounds the waist 2, which can uniformly regulate the heat energy of the entire waist and abdomen area, avoiding problems such as local overheating or uneven cooling.

[0118] Compared to point or line arrangements, ring structures are more ergonomic and are especially suitable for the characteristics of frequent changes in body posture in dynamic motion scenarios.

[0119] Phase change materials are usually encapsulated in polymer substrates in the form of microcapsules or filled in flexible cavities to ensure that they do not leak out and do not affect the breathability and flexibility of the fabric.

[0120] In this design, it is sealed inside the drainage cavity, which not only ensures the safety of wearing it, but also facilitates later maintenance and replacement.

[0121] Phase change materials can be made from n-alkanes such as n-eicosane, n-docosane, and n-tetracosane.

[0122] Its phase transition temperature can be controlled by the carbon chain length.

[0123] For example: n-eicosane C 20 H 42 Phase transition temperature approximately 37°C; n-octadecane C 18 H 38 Approximately 28°C; n-Hexadecane C 16 H 34 : Approximately 18℃.

[0124] By mixing paraffins with different carbon chain lengths, a eutectic mixture can be obtained, allowing the phase transition temperature to be precisely matched within the range of 28–32°C.

[0125] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A type of ultra-thin, quiet, and cool outdoor trousers, characterized in that: include: The pants consist of a main body (1), a waist (2), and two legs (3), wherein the legs (3) include the thighs (31) and the knees (32); A honeycomb sheet (33) is disposed on the outer region from the thigh (31) to the knee (32), the honeycomb sheet (33) comprising an outer layer (10), a middle layer (20) and an inner layer (30) arranged sequentially from the outside to the inside; The outer layer (10) is a tear-resistant layer with a thickness of 0.1-0.15 mm. The surface of the outer layer (10) is provided with an array of hexagonal through holes (11) formed by laser cutting. The diameter of the hexagonal through holes (11) is 0.8 mm, and the hole density is distributed in a gradient along the longitudinal direction. The middle layer (20) is a 3D support frame layer with a thickness of 0.3-0.5mm. The 3D support frame layer is composed of multiple asymmetrical wavy ribs (21). The height difference of the ribs (21) is 0.2mm-0.4mm. Adjacent ribs (21) form air guiding channels (22). The inner layer (30) is a moisture-wicking layer with a thickness of 0.05mm-0.08mm. The surface of the inner layer (30) is provided with raised particles (311) with a density of 200-250 particles / cm². A heat dissipation strip (40) is longitudinally arranged on the rear side of the leg (3), the heat dissipation strip (40) including a diamond-shaped grid base layer (41). And unidirectional opening and closing scales (42) covering the rhomboid mesh base layer (41). The one-way opening and closing scale (42) includes an outer TPU hydrophobic layer (421) and an inner cellulose moisture-absorbing layer (422) that adheres to the skin. The cellulose moisture-absorbing layer (422) absorbs sweat and expands, while the TPU hydrophobic layer (421) remains in a fixed state, causing the one-way opening and closing scale (42) to curl outward.

2. The ultra-thin, quiet, and cool outdoor pants according to claim 1, characterized in that: The edge of the cellulose moisture-absorbing layer (422) is provided with fine fibers (4221), which absorb sweat and allow it to evaporate quickly.

3. The ultra-thin, quiet, and cool outdoor pants according to claim 2, characterized in that: The opening angle range of the one-way opening and closing scale (42) is 30°-45°.

4. The ultra-thin, quiet, and cool outdoor pants according to claim 1, characterized in that: The height of the ribs (21) of the 3D support grid layer is distributed in an arithmetic sequence along the airflow direction, with a tolerance of 0.05mm-0.08mm.

5. The ultra-thin, quiet, and cool outdoor pants according to claim 1, characterized in that: The outer layer (10) of the thigh (31) has a pore density of 110-130 pores / cm², and the outer layer (10) of the knee (32) has a pore density of 70-90 pores / cm².

6. The ultra-thin, quiet, and cool outdoor pants according to claim 1, characterized in that: The outer layer (10) has a passivation layer (12) of 0.02mm-0.05mm at the edge of the hexagonal through hole (11).

7. The ultra-thin, quiet, and cool outdoor pants according to claim 1, characterized in that: The inner layer (30) has a pyramid-shaped structure with a bottom diameter of 0.08mm-0.12mm. The spacing between adjacent particles is 1.5-2 times the height of the particles. The surface of the protruding particles (311) is provided with a nano-scale hydrophobic coating (321).

8. The ultra-thin, quiet, and cool outdoor pants according to claim 1, characterized in that: The waist section (2) is provided with multiple sets of annular flow channels (70), which have a tapered cross-section with an inlet width of 1.2 mm and an outlet width of 0.6 mm. The flow channels (70) are filled with phase change energy storage material (71).

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