Temperature-locking down jacket with anti-fouling structure and temperature-locking anti-fouling method

By integrating a stain detection mechanism and breathable structure into the down jacket, the problem of stain penetration is solved, achieving the prevention of stubborn stains and comfortable warmth.

CN120884126APending Publication Date: 2025-11-04SHANGHAI FEIZI TECH CO LTD
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Patent Information

Application Number
CN202511000405.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-18
Publication Date
2025-11-04

AI Technical Summary

Technical Problem

Existing stain-resistant down jackets cannot completely prevent stains from penetrating, making stubborn stains difficult to clean.

Method used

A heat-locking down jacket with a stain recognition mechanism has been designed, including a miniature hot air blower, a color sensor, and an integrated chip. It is controlled by a mobile terminal via a Bluetooth connection module, automatically identifies and alerts users to stains, and achieves rapid heating and heat dissipation by combining a breathable mechanism and a double-layer down structure.

Benefits of technology

It effectively prevents stains from penetrating the fabric due to prolonged contact, assists users in daily maintenance, and improves comfort and warmth.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a temperature-locking down jacket with an anti-fouling structure and a temperature-locking anti-fouling method. The temperature-locking down jacket comprises a down jacket body, sleeves are sewn to the two sides of the down jacket body, stain recognition mechanisms surround the tail ends of the sleeves, and ventilation mechanisms are arranged at the sewn positions of the down jacket body and the sleeves; the stain identification mechanism comprises a micro hot-air blower, an air conveying pipe I and an air conveying pipe II which are fixedly communicated with two output ends of the micro hot-air blower respectively, an anti-fouling outer layer fixedly surrounding the circumferential outer wall of the tail end of the sleeve, a mounting ring, a lamp belt, a plurality of mesh enclosures and a plurality of color sensors which are electrically connected at equal intervals and are fixed on the periphery of the mounting ring; the net cover is filled with the cotton, and the integrated chip is electrically connected and fixed to the inner wall of the mounting ring. The temperature-locking down jacket with the anti-fouling structure and the temperature-locking anti-fouling method have the advantages that stubborn stains caused by the fact that stains stay for a long time and permeate into cloth are avoided, and a user can be assisted in daily maintenance of clothes.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of down jackets, and particularly relates to a temperature-locked down jacket with an anti-stain structure and a temperature-locked anti-stain method. BACKGROUND

[0002] In winter, people wear down jackets to keep warm, such as in cold northern regions, where windproof temperature-locked down jackets are the first choice of people in the region. The warmth of a down jacket mainly depends on the down filling inside it. Frequent washing can cause the down to clump or felt, affecting its loft and thus reducing the warmth. Therefore, anti-stain down jackets appear on the market to reduce the frequency of washing down jackets.

[0003] Anti-stain down jackets can effectively prevent oil stains, dirt stains and water stains from penetrating the fibers, keeping the fabric clean and dry for a long time and reducing the frequency of washing. This is undoubtedly a great convenience for busy modern people, saving a lot of time and effort. However, regardless of the fabric, the main way to achieve the anti-stain effect is to reduce the speed of stain adhesion and permeability, but it cannot completely prevent stains from penetrating. If the stains remain on the clothes for too long and penetrate the fabric, stubborn stains will be caused, which are more difficult to clean. SUMMARY

[0004] The present application discloses a temperature-locked down jacket with an anti-stain structure and a temperature-locked anti-stain method, aiming to solve the technical problem that regardless of the fabric, the main way to achieve the anti-stain effect is to reduce the speed of stain adhesion and permeability, but it cannot completely prevent stains from penetrating. If the stains remain on the clothes for too long and penetrate the fabric, stubborn stains will be caused, which are more difficult to clean.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A temperature-locked down jacket with an anti-stain structure comprises a down jacket main body, sleeves are sewn on both sides of the down jacket main body, a stain identification mechanism is arranged around the tail end of the sleeves, and a ventilation mechanism is arranged at the sewing position of the down jacket main body and the sleeves.

[0007] The stain identification mechanism comprises a micro hot air blower, air conveying pipes one and two fixedly connected to the two output ends of the micro hot air blower, a stain-proof outer layer fixedly arranged around the outer wall of the circumference of the tail end of the sleeves, a mounting ring, a lamp strip and a plurality of mesh covers, a plurality of color sensors equally and electrically connected to the outer circumference of the mounting ring, cotton filled in the mesh covers, and an integrated chip electrically connected to and fixed to the inner wall of the mounting ring.

[0008] The integrated chip comprises a Bluetooth connection module, a data transmission module and a remote control module, and is connected with the color sensors, the lamp strip and the micro hot air blower.

[0009] The mounting ring, the lamp strip, the mesh cover and the cotton are arranged in the antifouling outer layer, the mesh cover is located between the mounting ring and the lamp strip, and the output end of the air conveying pipe one is fixedly connected to the antifouling outer layer;

[0010] The sleeve has a cloth cover fixedly sewn on one side of the outer wall of the sleeve, and the air conveying pipe one is inserted into the cloth cover.

[0011] The mobile terminal can be connected with the down jacket through the Bluetooth connection module, and the mobile terminal can control the identification frequency of the stain identification mechanism through the remote control module. When the set time is reached, the stain identification mechanism can identify the stain by itself. When the color sensor identifies the stain, the data transmission module processes and prompts to avoid the user not seeing the stain, so that the stain stays in the cloth for too long and penetrates into the cloth to cause stubborn stains. The user can assist in daily maintenance of the clothes.

[0012] In a preferred scheme, the down jacket body includes a down temperature-locking outer layer and a down temperature-locking inner layer, and the bottom end of the down temperature-locking inner layer is fixedly sewn to the inner wall of the down temperature-locking outer layer. A gap is arranged between the down temperature-locking outer layer and the down temperature-locking inner layer, and a perforation is arranged on one side of the down temperature-locking outer layer.

[0013] The end of the air conveying pipe two extends into the gap through the perforation, and zippers are fixedly sewn to the two sides of the down temperature-locking inner layer and the inner wall of the down temperature-locking outer layer, respectively. The outer part of the down jacket body is coated with an antifouling coating.

[0014] The down jacket body is mainly composed of a down temperature-locking outer layer and a down temperature-locking inner layer. The double-layer structure can make the distribution of down more uniform under the same amount of down, and can avoid the occurrence of down loss. The overall temperature-locking performance of the down jacket is optimized, and the micro hot air blower can deliver hot air into the gap between the down temperature-locking outer layer and the down temperature-locking inner layer through the air conveying pipe two, so that the down jacket can be quickly heated. Finally, when the outdoor temperature rises, the down jacket is too thick, the zipper can be opened, and the down temperature-locking inner layer can be turned down, so that the length of the down jacket is extended to reduce the thickness, and the adaptability of the down jacket to the environment is optimized.

[0015] In a preferred scheme, the air permeable mechanism includes an antibacterial lining, a humidity sensor fixedly attached to the antibacterial lining, a plurality of heat dissipation openings arranged through the antibacterial lining, and a sealing cloth attached to the outside of the heat dissipation openings. The humidity sensor is connected to the data transmission module.

[0016] The antibacterial lining is attached to the connecting part of the down jacket body and the sleeve, the outer wall of the down jacket body, the sleeve and the sealing cloth is fixedly sewn with a magic tape, and the sealing cloth is connected to the down jacket body and the sleeve through the magic tape;

[0017] A temperature locking method for a temperature locking down jacket with an anti-fouling structure, comprising the following specific steps:

[0018] S1: input hot air: use a mobile terminal to control a micro hot air blower through a remote control module to transport hot air from the air inlet pipe two to the inner layer and the outer layer of the down jacket;

[0019] S2: heat absorption and temperature locking: the inner layer and the outer layer of the down jacket absorb the heat of the hot air and lock the heat, rapidly increasing the internal temperature of the down jacket, and the hot air is discharged from the top end of the down jacket body;

[0020] S3: set the identification frequency: use a mobile terminal to control the identification frequency of the stain identification mechanism through a remote control module;

[0021] S4: inflation: when identifying stains, the micro hot air blower inflates hot air into the anti-fouling outer layer through the air inlet pipe one, causing it to swell;

[0022] S5: stain identification: the light strip is turned on synchronously, the stain is made obvious through the light transmission, and the color sensor identifies the stain on the anti-fouling outer layer;

[0023] S6: stain reminder: after the color sensor identifies the stain, it is processed and reminded through the data transmission module.

[0024] By setting the ventilation mechanism, the ventilation mechanism can be cooled through the heat dissipation port. When the temperature needs to be raised for warmth, the sealing cloth can be stably covered at the bottom end of the plurality of heat dissipation ports through the magic tape to close the heat dissipation port position, so as to avoid heat loss. If the armpit is overheated, the sealing cloth can be removed to dissipate heat through the heat dissipation port. In addition, through the setting of the humidity sensor, the humidity of the armpit can be monitored in real time to assist in creating a healthy and ventilated environment.

[0025] As described above, a heat-locking down jacket with an anti-fouling structure includes a down jacket body, sleeves sewn onto both sides of the down jacket body, and a stain recognition mechanism surrounding the tail of the sleeves. A breathable mechanism is provided at the seam between the down jacket body and the sleeves. The stain recognition mechanism includes a miniature hot air blower, two air supply pipes fixedly connected to the two output ends of the miniature hot air blower, an anti-fouling outer layer fixedly surrounding the outer circumference of the tail of the sleeve, a mounting ring, a light strip and multiple mesh covers, multiple color sensors electrically connected and fixed to the outer circumference of the mounting ring at equal intervals, cotton filling the mesh covers, and an integrated chip electrically connected and fixed to the inner wall of the mounting ring. The integrated chip includes a Bluetooth connection module, a data transmission module and a remote control module, and the integrated chip is connected to the color sensors, the light strip and the miniature hot air blower. The heat-locking down jacket with a stain-resistant structure and the heat-locking and stain-resistant method provided by this invention have the technical effect of preventing stains from penetrating into the fabric for too long and causing stubborn stains, and can assist users in the daily maintenance of clothing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a heat-locking down jacket with an anti-fouling structure proposed in this invention.

[0027] Figure 2 This is a schematic diagram of the internal structure of a stain recognition mechanism for a heat-locking down jacket with an anti-fouling structure proposed in this invention.

[0028] Figure 3 This is a schematic diagram of the main body of a heat-locking down jacket with an anti-fouling structure proposed in this invention.

[0029] Figure 4 This is a schematic diagram showing the breakdown of the breathable mechanism of a heat-locking down jacket with an anti-fouling structure proposed in this invention.

[0030] Figure 5 This is a flowchart of a heat-locking and stain-resistant method for a heat-locking down jacket with an anti-fouling structure proposed in this invention.

[0031] In the diagram: 1. Stain detection mechanism; 2. Sleeve; 3. Down jacket body; 4. Breathing mechanism; 101. Miniature hot air blower; 102. Air duct one; 103. Fabric cover; 104. Anti-fouling outer layer; 105. Color sensor; 106. Mounting ring; 107. LED strip; 108. Cotton; 109. Mesh cover; 110. Air duct two; 111. Fabric pocket; 301. Down insulation outer layer; 302. Down insulation inner layer; 303. Zipper; 304. Perforation; 401. Humidity sensor; 402. Heat dissipation vent; 403. Antibacterial lining; 404. Sealing cloth; 405. Velcro. Detailed Implementation

[0032] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0033] The lock temperature down jacket with anti-pollution structure and the lock temperature down jacket anti-pollution method disclosed by the present application are mainly applied to the scene of use of the down jacket.

[0034] Referring to Figure 1 and Figure 2 The lock temperature down jacket with anti-pollution structure comprises a down jacket main body 3, sleeves 2 sewn on both sides of the down jacket main body 3, and a stain identification mechanism 1 surrounding the tail end of the sleeves 2, and a breathable mechanism 4 arranged at the sewing position of the down jacket main body 3 and the sleeves 2.

[0035] The stain identification mechanism 1 comprises a micro hot air blower 101, air conveying pipes 102 and 110 fixedly connected with two output ends of the micro hot air blower 101 respectively, an anti-pollution outer layer 104 fixedly surrounding the outer wall of the circumference of the tail end of the sleeves 2, a mounting ring 106, a lamp strip 107, a plurality of mesh covers 109, a plurality of color sensors 105 equidistantly electrically connected and fixed to the outer circumference of the mounting ring 106, cotton 108 filled in the mesh covers 109, and an integrated chip electrically connected and fixed to the inner wall of the mounting ring 106.

[0036] The integrated chip comprises a Bluetooth connection module, a data conveying module and a remote control module, and is connected with the color sensors 105, the lamp strip 107 and the micro hot air blower 101. A mobile terminal can establish a connection with the down jacket through the Bluetooth connection module. The mobile terminal can control the identification frequency of the stain identification mechanism 1 through the remote control module. When the set time is reached, the stain identification mechanism can identify the stain automatically. In the process, the micro hot air blower 101 fills hot air into the anti-pollution outer layer 104 through the air conveying pipe 102 to inflate it. In the inflation process, the hot air leaks slowly through the anti-pollution outer layer 104, and at the same time, the lamp strip 107 is turned on synchronously to make the stain obvious through the light transmission property. The color sensors 105 identify the stain on the anti-pollution outer layer 104 and process the image. When the color sensors 105 identify the stain, the data conveying module is used to process and remind to avoid the user not seeing the stain, so that the stain stays for too long to penetrate into the cloth to cause stubborn stains. The user can assist in the daily maintenance of the clothes. The mesh covers 109 and the cotton can be inserted between the mounting ring 106 and the lamp strip 107. The setting of the cotton can unify the thickness of the mounting ring 106 and the lamp strip 107 of the sleeve part, so as to reduce the foreign body sensation and improve the comfort. In addition, the setting of the filter screen 109 can stabilize the filling position of the cotton to avoid affecting the identification result of the color sensors 105 when inflating.

[0037] Referring to Figure 2In a preferred embodiment, the mounting ring 106, the light strip 107, the mesh cover 109, and the cotton 108 are simultaneously disposed inside the anti-fouling outer layer 104. The mesh cover 109 is located between the mounting ring 106 and the light strip 107, and the output end of the air duct 102 is fixedly connected to the anti-fouling outer layer 104.

[0038] Reference Figure 2 In a preferred embodiment, a cloth cover 103 is fixedly sewn onto one side of the outer wall of the sleeve 2, and an air duct 102 is inserted into the cloth cover 103. At the same time, a cloth pocket 111 is fixedly sewn onto the outer wall of the same side of the sleeve 2, and a miniature hot air blower 101 is located inside the cloth pocket 111.

[0039] Reference Figure 3 In a preferred embodiment, the down jacket body 3 includes a down-locking outer layer 301 and a down-locking inner layer 302, and the bottom end of the down-locking inner layer 302 is fixedly sewn to the inner wall of the down-locking outer layer 301. A gap is provided between the down-locking outer layer 301 and the down-locking inner layer 302, and a perforation 304 is provided through one side of the down-locking outer layer 301.

[0040] Reference Figure 3 In a preferred embodiment, the end of the second air duct 110 extends into the gap through the perforation 304. Zippers 303 are fixedly sewn to both sides of the down-locking inner layer 302, and the zippers 303 are also fixedly sewn to the inner wall of the down-locking outer layer 301. The exterior of the down jacket body 3 is coated with an anti-fouling coating. The down jacket body 3 is mainly composed of the down-locking outer layer 301 and the down-locking inner layer 302. This double-layer design allows for more uniform down distribution with the same amount of down, and prevents down leakage, thus optimizing the overall heat-locking performance of the down jacket. Simultaneously, the miniature hot air blower 101 can deliver hot air to the down-locking outer layer through the second air duct 110. Hot air is delivered to the bottom of the gap between the outer down-insulating layer 301 and the inner down-insulating layer 302. It can penetrate the inner walls of the outer down-insulating layer 301 and the inner down-insulating layer 302 and act on the down filling inside, which can quickly raise the internal temperature of the down jacket body 3. The temperature is stabilized by the filling down. As the hot air rises, it is discharged from the top of the inner down-insulating layer 302. This can achieve rapid heating of the down jacket. Finally, if the outdoor temperature rises and the down jacket is too thick, the zipper 303 can be opened and the inner down-insulating layer 302 can be folded down. This can reduce the thickness by extending the length of the down jacket and optimize the adaptability of the down jacket to the environment.

[0041] Reference Figure 4In a preferred embodiment, the air-permeable mechanism 4 comprises an antibacterial lining 403, a humidity sensor 401 fixedly attached to the antibacterial lining 403, a plurality of heat dissipation openings 402 arranged through the antibacterial lining 403, and a sealing cloth 404 attached to the outside of the heat dissipation openings 402, and the humidity sensor 401 is connected to the data transmission module.

[0042] With reference to Figure 4 In a preferred embodiment, the antibacterial lining 403 is attached to the joint of the down jacket body 3 and the sleeve 2, the outer walls of the down jacket body 3, the sleeve 2, and the sealing cloth 404 are fixedly stitched with Velcro 405, and the sealing cloth 404 is connected to the down jacket body 3 and the sleeve 2 through the Velcro 405. The air-permeable mechanism 4 can dissipate heat through the heat dissipation openings 402. When warming is needed, the sealing cloth 404 can be stably covered on the bottom end of the plurality of heat dissipation openings 402 through the Velcro 405 to close the position of the heat dissipation openings 402 and avoid heat loss. If the armpit is overheated due to sweating, the sealing cloth 404 can be removed to dissipate heat through the heat dissipation openings 402 to adjust the comfort of the armpit position according to the needs of the user. In addition, through the setting of the humidity sensor 401, the humidity of the armpit can be monitored in real time. Since the skin may cause skin diseases or bacterial growth in a humid environment for a long time, but people do not pay attention to the armpit in a concentrated state, the user can be reminded through the mobile terminal when the humidity is high, and the sealing cloth 404 can be quickly opened to create a healthy and ventilated environment.

[0043] With reference to Figures 1-5 A temperature-locking anti-fouling method for a temperature-locking down jacket with an anti-fouling structure, comprising the following specific steps:

[0044] S1: input hot air: use a mobile terminal to control a miniature hot air blower 101 through a remote control module to transport hot air from a wind pipe two 110 to between a down jacket temperature-locking inner layer 302 and a down jacket temperature-locking outer layer 301;

[0045] S2: heat absorption and temperature locking: the down jacket temperature-locking inner layer 302 and the down jacket temperature-locking outer layer 301 absorb the heat of the hot air and lock the heat to quickly increase the internal temperature of the down jacket, and the hot air is discharged from the top end of the down jacket body 3;

[0046] S3: set the identification frequency: use a mobile terminal to control the identification frequency of the stain identification mechanism 1 through a remote control module;

[0047] S4: inflation: when identifying stains, the miniature hot air blower 101 inflates hot air into the anti-fouling outer layer 104 through the wind pipe one 102 to make it bulge;

[0048] S5: stain identification: the light strip 107 is turned on synchronously to make the stains visible through the transparency, and the color sensor 105 identifies the stains on the anti-fouling outer layer 104;

[0049] S6: Stain reminder: After the color sensor 105 identifies the stain, the data transmission module processes and reminds.

[0050] Working principle: The mobile terminal can establish a connection with the down jacket through the Bluetooth connection module, wherein the mobile terminal can control the identification frequency of the stain identification mechanism 1 through the remote control module, and when the set time is reached, the stain identification mechanism can identify the stain by itself. During the process, the miniature air heater 101 fills hot air into the stain-proof outer layer 104 through the air inlet pipe 102 to inflate it, and the hot air slowly leaks through the stain-proof outer layer 104 during the inflation process, while the lamp strip 107 is turned on at the same time, making the stain visible through the light transmission, and the color sensor 105 identifies the stain on the stain-proof outer layer 104 and processes the image. When the color sensor 105 identifies the stain, the data transmission module processes and reminds to avoid the user not seeing the stain, making the stain stay for too long and penetrate into the fabric to cause stubborn stains. It can assist users in daily maintenance of clothes, and the mesh cover 109 and cotton can be inserted between the mounting ring 106 and the lamp strip 107. The setting of cotton can not only have a warming effect, but also can unify the thickness of the sleeve mounting ring 106 and the lamp strip 107 to reduce the foreign body sensation and improve comfort. In addition, the setting of the filter screen 109 can stabilize the filling position of the cotton and avoid affecting the identification result of the color sensor 105 when inflating.

[0051] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A heat-locking down jacket with a stain-resistant structure, comprising a down jacket body (3), characterized in that, The down jacket body (3) has sleeves (2) sewn on both sides, and the end of the sleeves (2) is surrounded by a stain identification mechanism (1). A breathable mechanism (4) is provided at the seam between the down jacket body (3) and the sleeves (2). The stain recognition mechanism (1) includes a miniature hot air blower (101), a first air supply pipe (102) and a second air supply pipe (110) that are fixedly connected to the two output ends of the miniature hot air blower (101), a stain-resistant outer layer (104) fixedly surrounding the outer wall of the circumference of the sleeve (2), a mounting ring (106), a light strip (107) and multiple mesh covers (109), multiple color sensors (105) that are equidistantly electrically connected and fixed to the outer circumference of the mounting ring (106), cotton (108) filled in the mesh cover (109), and an integrated chip that is electrically connected and fixed to the inner wall of the mounting ring (106). The integrated chip includes a Bluetooth connection module, a data transmission module and a remote control module. The integrated chip is connected to a color sensor (105), a light strip (107) and a miniature hot air blower (101).

2. A heat-locking down jacket with an anti-fouling structure according to claim 1, characterized in that, The mounting ring (106), light strip (107), mesh cover (109) and cotton (108) are simultaneously disposed inside the anti-fouling outer layer (104). The mesh cover (109) is located between the mounting ring (106) and the light strip (107). The output end of the air duct (102) is fixedly connected to the anti-fouling outer layer (104).

3. A heat-locking down jacket with a stain-resistant structure according to claim 1, characterized in that, A cloth cover (103) is fixedly sewn onto one side of the outer wall of the sleeve (2), and an air duct (102) is inserted into the cloth cover (103). A cloth pocket (111) is also fixedly sewn onto the same side of the outer wall of the sleeve (2), and a miniature hot air blower (101) is located inside the cloth pocket (111).

4. A heat-locking down jacket with an anti-fouling structure according to claim 1, characterized in that, The main body (3) of the down jacket includes a down-locking outer layer (301) and a down-locking inner layer (302), and the bottom end of the down-locking inner layer (302) is fixedly sewn to the inner wall of the down-locking outer layer (301). A gap is provided between the down-locking outer layer (301) and the down-locking inner layer (302), and a perforation (304) is provided through one side of the down-locking outer layer (301).

5. A heat-locking down jacket with an anti-fouling structure according to claim 4, characterized in that, The end of the second air duct (110) extends into the gap through the perforation (304). Zippers (303) are fixedly sewn on both sides of the down heat-locking inner layer (302), and the zippers (303) are also fixedly sewn to the inner wall of the down heat-locking outer layer (301). The exterior of the down jacket body (3) is coated with a stain-resistant coating.

6. A heat-locking down jacket with an anti-fouling structure according to claim 1, characterized in that, The breathable mechanism (4) includes an antibacterial lining (403), a humidity sensor (401) fixedly attached to the antibacterial lining (403), a plurality of heat dissipation vents (402) through the antibacterial lining (403), and a sealing cloth (404) attached to the outside of the heat dissipation vents (402). The humidity sensor (401) is connected to the data transmission module.

7. A heat-locking down jacket with an anti-fouling structure according to claim 6, characterized in that, The antibacterial lining (403) is attached to the connection between the down jacket body (3) and the sleeve (2). The outer walls of the down jacket body (3), the sleeve (2) and the sealing cloth (404) are respectively fixedly sewn with Velcro (405), and the sealing cloth (404) is connected to the down jacket body (3) and the sleeve (2) through Velcro (405).

8. A method for heat-locking and stain-resistant down jacket with a stain-resistant structure, applied to the heat-locking down jacket with a stain-resistant structure as described in claim 5, characterized in that, The specific steps include the following: S1: Input hot air: Use a mobile terminal to control the micro hot air blower (101) through the remote control module to deliver hot air between the down insulation inner layer (302) and the down insulation outer layer (301) through the air supply pipe two (110); S2: Heat absorption and heat retention: The down heat-retaining inner layer (302) and the down heat-retaining outer layer (301) absorb the heat of the hot air and lock in the heat, which quickly increases the internal temperature of the down jacket. The hot air is discharged from the top of the main body of the down jacket (3). S3: Set the recognition frequency: Use a mobile terminal to control the recognition frequency of the stain recognition mechanism (1) via a remote control module; S4: Inflation: When performing stain identification, the miniature hot air blower (101) inflates the anti-fouling outer layer (104) by inflating it through the air supply pipe (102); S5: Stain recognition: The light strip (107) is turned on simultaneously, and the stains are made more visible through light transmission. The color sensor (105) identifies the stains on the anti-fouling outer layer (104). S6: Stain Reminder: After the color sensor (105) identifies a stain, it processes and reminds the user through the data transmission module.