A self-adjusting bra and method of adjusting the same

Abstract

The application provides a self-adaptive bra and a self-adaptive adjusting method thereof, which comprises a bra body, a flexible sensing module, a stimulation generating module and a processing unit; the bra body comprises at least one functional component made of a deformed material and having a preset deformation structure; the flexible sensing module is used for collecting real-time wearing state data; the processing unit is used for receiving and analyzing the wearing state data; and the stimulation generating module outputs a stimulation signal to trigger the reversible deformation of the deformation structure in the corresponding functional component along a preset track, so as to automatically adjust the tension, curvature, volume or the fit with the human body of the functional component. The bra can be automatically adjusted according to the state data thereof.

Description

Technical Field

[0001] This invention relates to the field of women's clothing or smart clothing, and particularly to an adaptive adjustable bra and its adjustment method. Background Technology

[0002] As an indispensable piece of intimate clothing for women, the core function of a bra is to provide effective support for the breasts, ensure wearing comfort, and conform to the body's physiological curves through proper shaping. However, during daily activities (such as walking and exercise), changes in posture (such as standing, sitting, and bending over), and even changes in the menstrual cycle, the shape, volume, and required support of the breasts undergo significant dynamic changes. An ideal bra should be able to adapt to these dynamic changes, achieving a close fit in all situations, avoiding problems such as neck and shoulder pain, breast compression, and shoulder strap slippage caused by improper fit, and ensuring the wearer's freedom of movement and physical health.

[0003] Current bra products on the market, whether traditional or the so-called "smart" types that have emerged in recent years, all suffer from significant adaptation defects and technological limitations. Traditional bras are mainly divided into two categories: underwire and wire-free. While underwire bras can achieve good shaping effects, their rigid underwire design can directly compress the base of the breast and surrounding tissues. Long-term wear may affect blood circulation in the breast area, causing shoulder pain and discomfort. At the same time, the tight fit between the underwire and multiple layers of fabric often leads to a significant decrease in breathability, resulting in a noticeable stuffiness and compromising wearing comfort. To compensate for insufficient structural support, wire-free bras often use high-density foam filling or high-strength elastic underband designs, which ironically leads to uneven distribution of support and transfers the pressure to the shoulder straps or underbust. Moreover, no matter how optimized the structure is, the fixed cup shape and shoulder strap length design still cannot fundamentally solve the fundamental contradiction between static products and the dynamic changes of the human body. While some traditional bras offer limited shoulder strap adjustments through mechanical fasteners such as hooks and clasps, this discrete, manual adjustment method cannot achieve continuous, dynamic, and personalized precise fitting, making it difficult to meet women's immediate needs in different situations.

[0004] With the development of smart wearable technology, adaptive bras integrating sensors, shape memory alloys, or pneumatic devices have begun to appear on the market, attempting to solve the aforementioned fitting problems through technological means. For example, some solutions use slow-rebound smart fabrics, but their adjustment range is usually narrow (≤10%) and their response speed is slow (≥30 seconds), failing to accurately match the immediate support needs of women during high-intensity activities such as running and jumping. Other solutions introduce electronic drive components, such as micro-motors and air pumps, attempting to achieve active adjustment. However, the design concept of existing smart bras remains at the level of mechanical drive and simple electronic control, failing to fundamentally integrate the adjustment function with the material itself, resulting in complex structures and poor reliability.

[0005] Therefore, how to provide a bra that is simple in structure, comfortable to wear, and can dynamically and precisely adapt to changes in human physiological state and environment has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an adaptive adjustable bra and its adjustment method. A sensing module collects wear data in real time, and a processing unit analyzes the data to drive a stimulation module that outputs heat, light, or airflow stimulation. This triggers reversible deformation of functional components, achieving dynamic adaptive adjustment of shoulder strap tension and cup shape, forming a perception-decision-response system. This invention features a simple structure, rapid response, comfortable wear, and combines personalized customization with durability.

[0007] The present invention achieves the above-mentioned technical objectives through the following technical means.

[0008] An adaptive adjustment bra includes a bra body, a flexible sensing module, a stimulation generation module, and a processing unit;

[0009] The bra body includes at least one functional component made of deformable material and having a preset deformation structure; the flexible sensing module is integrated inside the bra body for real-time acquisition of wear status data; the processing unit is signal-connected to the flexible sensing module for receiving and analyzing wear status data and generating drive commands based on the analysis results; the stimulation generation module is electrically connected to the microprocessor unit and acts on the functional component.

[0010] The stimulation generation module responds to the drive command of the microprocessor unit, outputs a stimulation signal, and triggers the deformation structure in the corresponding functional component to undergo reversible deformation along a preset trajectory, which is used to automatically adjust the tension, curvature, volume, or fit of the functional component to the human body.

[0011] Furthermore, the functional components include at least one of shoulder straps, cups, side panels, underband, and center gore; the deformable material includes at least one of thermally responsive shape memory polymers, light-responsive liquid crystal elastomers, temperature-sensitive hydrogels, and humidity-sensitive polymers.

[0012] Furthermore, the shoulder strap adopts a layered structure composed of a shape memory polymer layer and an elastic rubber layer, and the shoulder strap has an airbag channel inside that communicates with the stimulation generation module.

[0013] Furthermore, the cup has a multi-layered gradient structure, which includes, from the inside out, an inner comfort layer made of temperature-sensitive or humidity-sensitive material, an intermediate driving support layer composed of a shape memory polymer support layer and a light-responsive liquid crystal elastomer driving layer, and an outer breathable protective layer.

[0014] Furthermore, the flexible sensing module includes at least a pressure sensor and a strain sensor. The flexible sensing module is integrated into the root of the shoulder strap, the inner wall of the cup, and the underband fitting area, and is used to collect data on shoulder strap pressure, cup fit, and chest movement status.

[0015] Furthermore, the stimulus generation module includes:

[0016] At least one air pump with a heating function, its outlet connected via a gas channel to an airbag channel located inside the shoulder strap; and

[0017] At least one heating element is attached to a segment of the shoulder strap made of shape memory polymer.

[0018] Furthermore, the stimulation generation module includes at least one near-infrared LED array, the irradiation direction of which corresponds to the driving layer in the cup composed of a photoresponsive liquid crystal elastomer.

[0019] Furthermore, the processing unit pre-stores human physiological parameter thresholds, different scenario adaptation models, and user personalized preference parameters, which are used to analyze and calculate the wearable status data and generate corresponding driving instructions.

[0020] Furthermore, it also includes a flexible power supply module that supplies power to the flexible sensing module, processing unit and stimulation generation module, the flexible power supply module being encapsulated in a reserved cavity inside the side panel of the bra body.

[0021] An adjustment method for an adaptive bra includes the following steps:

[0022] Tension and shape adjustment: The processing unit drives the stimulation generation module to output at least one of thermal stimulation, light stimulation or airflow pressure stimulation according to the preset mode or preliminary sensing data, triggering the corresponding functional component to undergo the first-level deformation and complete the preliminary shape adaptation.

[0023] Precise tension and shape adjustment: Based on the initial shape adaptation, the flexible sensing module provides real-time feedback on the wearing status data. The processing unit generates a secondary driving command based on the wearing status data, which drives the stimulation generation module to output a second-level stimulus that is different from the first-level stimulus. This allows for local fine-tuning and deformation control of the functional components, thereby achieving a precise fit between the bra body and the human body contour.

[0024] The beneficial effects of this invention are as follows:

[0025] 1. The adaptive adjustable bra of this invention achieves real-time and precise adaptation to the dynamic changes of the human body by constructing a closed-loop system of perception-decision-response composed of functional components made of 4D-printed smart materials, an ultra-thin flexible sensing module, a miniature processing unit, and a miniature stimulation generation module. By embedding deformable functional materials within the bra body, the complex mechanical transmission structure of traditional smart bras is eliminated, achieving a weight reduction of more than 50% compared to traditional smart bras. Simultaneously, the dynamic response time is shortened to less than 20 seconds. It can adjust the shoulder strap tension and cup shape in real time according to the user's different states such as walking, exercising, and sitting, completely solving the problems of poor dynamic adaptation and slow response of traditional bras and existing smart bras.

[0026] 2. The adaptive adjustable bra of this invention features shoulder straps with a composite structure of shape memory polymer and elastic rubber layers and built-in airbag channels. Deformation is triggered by hot airflow from a micro-heating plate or micro-air pump. The cups employ a multi-layered gradient structure including a temperature-sensitive skin-friendly layer, an SMP support layer, and an LCE driving layer. Curvature adjustment is achieved by triggering LCE layer deformation through a near-infrared LED array. Different stimulation response mechanisms are used for the shoulder straps and cups, achieving stable switching between tight and relaxed shoulder strap tension and a 20% increase in cup curvature to enhance support during exercise. This enables precise fit and zoned adjustment in different scenarios.

[0027] 3. The adaptive adjustment bra of this invention integrates and encapsulates electronic components such as a flexible lithium battery, a miniature air pump, and a miniature processing unit within a reserved cavity inside the bra's side panel. Electrical connections are achieved through flexible circuitry, and a waterproof flexible encapsulation process is used to seal and protect the sensing unit and core structure. Through this integrated and modular structural layout and encapsulation design, the response sensitivity of each adjustment mode will not be affected by washing (within the warranty period), significantly improving the product's lifespan and daily usability. This overcomes the technical bottleneck of traditional smart bras, which are difficult to use due to the fragility of electronic components and the difficulty of cleaning.

[0028] 4. The adaptive adjustable bra of this invention, through the cooperation of an ultra-thin flexible sensing module and a miniature processing unit, collects wearing data such as shoulder strap pressure and cup fit in real time, and can establish wireless communication with a mobile terminal APP via a signal transmission module. By constructing an intelligent interactive system of flexible sensing-wireless interconnection-data-driven, it achieves intelligent health management effects such as accurate recording of wearing data, real-time reminders of poor posture, and early warning of abnormal pressure distribution. This upgrades the bra from a simple garment into a personalized health management tool that can assist women in managing their menstrual cycles and correcting their posture, expanding the product's functional dimensions and user experience. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are some embodiments of the present invention. For those skilled in the art, it is obvious that other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of the adaptive adjustable bra described in this invention.

[0031] Figure 2 This is a schematic diagram of the shoulder strap structure described in this invention and its length / tension changes under thermal stimulation.

[0032] Figure 3 This is the integrated sensor structure of the present invention.

[0033] Figure 4 It has a multi-layered, partitioned overall structure for the bra cup.

[0034] Figure 5 This is a schematic diagram showing the deformation state of the bra cup under different stimuli.

[0035] Figure 6 This is a schematic diagram illustrating the principle of the adaptive adjustable bra adjustment method described in this invention.

[0036] In the picture:

[0037] 1-Bra body; 1-1-Cup; 1-2-Shoulder strap; 2-Thermal response drive element; 3-Sensor; 4-Control system; 5-4D printed multi-layer structure; 6-Power supply module; 7-Heating element; 8-Flexible circuit; 9-Near-infrared LED array; 10-Pressure sensor; 11-Processing unit; 12-Signal transmission module; 13-Air pump; 14-Gas channel; 15-Airbag channel. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, 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, and therefore should not be construed as a limitation of the invention. Furthermore, 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 with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] Example 1

[0042] like Figure 1 As shown in Embodiment 1, the adaptive adjustable bra includes a bra body 1, a flexible sensing module, a stimulation generation module, and a processing unit 11. The bra body 1 includes at least one functional component made of a deformable material and having a preset deformation structure. The functional component is manufactured using 4D printing technology. The bra body 1 includes cups 1-1, shoulder straps 1-2, side panels, underband, and center gore, which are all conventional bra components. At least one of these components is made of a deformable material and forms a functional component with a preset deformation structure. These functional components can actively deform in response to external stimuli.

[0043] In Example 1, the shoulder straps 1-2 and the bra cups 1-1 are functional components. Specifically, the shoulder straps 1-2 adopt a double-layer composite structure, such as... Figure 2As shown, its inner (or middle) layer is formed by 4D printing of a thermally responsive shape memory polymer (SMP) material (such as a polyurethane blend). The glass transition temperature (Tg) of this material is set at approximately 34°C, close to the temperature of human skin. The microstructure of the inner layer of the thermally responsive shape memory polymer material adopts a fiber-woven design, with a printing layer height of 0.1 mm, a fill density of 75%, a fiber diameter of 80 μm, and a weaving porosity of 22%, ensuring both structural strength and good breathability. The outer layer is composited with an elastic rubber layer to provide basic elastic recovery force. Crucially, the shoulder straps 1-2 also have pre-set airbag channels 15 along their length. These airbag channels 15 are integrally formed during the 4D printing process and are connected to the gas channels 14 in the side panels. Together with a miniature air pump 13, they achieve air pump heating and directional gas transmission functions, simultaneously responding to thermal and airflow stimuli and coordinating with pressure feedback to achieve dynamic adaptation. The connection between the shoulder strap 1-2 and the upper edge of the cup 1-1 is provided with an embedded connection groove, which is bonded and fixed by medical-grade light-curing adhesive. After bonding, it is cured by UV light irradiation for 4 minutes to ensure that the connection strength meets the needs of daily wear and pulling. At the same time, it can be separated without damage by a special adhesive remover, which facilitates the replacement and maintenance of the parts.

[0044] like Figure 4As shown, the bra cup 1-1 adopts a multi-layer gradient structure design, comprising, from the inside out: an inner comfort layer, a middle driving support layer, and an outer breathable protective layer. The inner comfort layer, which is in direct contact with human skin, is 4D printed from a temperature-sensitive hydrogel or a humidity-sensitive polymer. This inner comfort layer can sense changes in temperature and humidity on the skin surface, producing minute volume expansion or contraction to adaptively conform to the subtle contours of the chest and distribute local pressure. The middle driving support layer is the core component for adjusting the shape of the bra cup 1-1. This layer has a dual-layer synergistic structure: a high-modulus shape memory polymer (SMP) support layer as the base to ensure the overall structural stability of the cup; and a driving layer composed of a photoresponsive liquid crystal elastomer (LCE) covering the outside of the SMP support layer (i.e., the side facing away from the skin). The LCE material uniformly incorporates multi-walled carbon nanotubes with high photothermal conversion efficiency. These two layers are integrally formed by 4D printing, and the contraction or expansion of the LCE layer directly drives the curvature change of the entire bra cup. The addition of multi-walled carbon nanotubes is 1% of the mass of the liquid crystal elastomer. With a response wavelength of 808nm and a photothermal conversion efficiency ≥85%, it can simultaneously respond to photothermal stimulation and airflow pressure stimulation, achieving dual adjustment of curvature and support strength. Combined with pressure feedback data, it precisely matches changes in breast shape. The outer breathable protective layer is made of highly breathable fiber material and 4D printed on the outermost side, ensuring the bra's breathability and aesthetics. Furthermore, the pre-set microchannels inside the intermediate drive support layer can communicate with the gas channel 14. These microchannels are distributed in a mesh or radial pattern along the cup's curved surface, with one end sealed to a branch channel of the gas channel 14 and the other end extending to the adjacent drive layer area. When the heated airflow output by the air pump 13 enters the microchannels through the branch channel, it can uniformly and gently assist heating of the drive layer without direct contact with the skin. This, combined with the photothermal effect of the near-infrared LED array 9, improves the deformation response speed and uniformity of the drive layer.

[0045] To achieve closed-loop regulation of perception-decision-response, the bra incorporates a control system 4, which includes an ultra-thin flexible sensing module, a miniature processing unit 11, and a miniature stimulation generation module. For example... Figure 3 As shown, the flexible sensing module includes multiple ultra-thin flexible pressure sensors 10 and strain sensors. These sensors are integrated into key stress points on the inside of the bra, such as the base of the shoulder straps 1-2, the center of the inner wall of the cups 1-1, and the underband fitting area. The sensors are only about 0.08 mm thick, with a detection accuracy of 0.08 kPa. They are connected to a miniature processing unit 11 via a flexible circuit 8 to collect real-time wear data such as shoulder strap pressure, cup fit, and chest movement. The sensor surface is covered with a skin-friendly conductive gel to improve detection sensitivity and wearing comfort.

[0046] The processing unit 11 uses a low-power chip (such as STM32L476), which has pre-stored user-personalized parameters (such as preferred tightness and menstrual cycle information) and comfort thresholds (such as the optimal shoulder pressure range of 1.8-2.2 kPa). The processing unit 11 is electrically connected to the sensing module and the stimulation generation module via flexible cables, and is responsible for receiving and analyzing sensing data and generating corresponding drive commands.

[0047] The stimulation generation module responds to the driving command of the microprocessor unit 11, outputs a stimulation signal, and triggers the deformation structure in the corresponding functional component to undergo reversible deformation along a preset trajectory, which is used to automatically adjust the tension, curvature, volume or fit of the functional component to the human body.

[0048] The stimulation module at the shoulder strap 1-2 includes an air pump 13 and heating pads 7. The air pump 13 is a piezoelectric or electromagnetic miniature air pump with a heating function, capable of heating the pumped gas to a set temperature (e.g., 36-42℃). The air outlet of the air pump 13 is connected to the airbag channel 15 inside the shoulder strap 1-2 via a gas channel 14; simultaneously, the gas channel 14 extends into a branch channel, connecting to a pre-set microchannel inside the intermediate drive support layer of the bra cup 1-1. Three sets of heating pads 7 are evenly distributed along the length of the shoulder strap 1-2. Each heating pad 7 is a flexible thin-film heating pad with a thickness of approximately 0.05mm and a power of 5mW / cm². 2 It fits into the section of shoulder strap 1-2 made of shape memory polymer, such as Figure 2 As shown, it is used to apply thermal stimulation to a local area. At the same time, the heating element 7 is arranged correspondingly to the airbag channel 15, which can maintain the temperature of the gas heated by the air pump 13 and ensure the stability of the thermal stimulation.

[0049] The stimulation generation module at cup 1-1 includes a near-infrared LED array 9, which consists of multiple LED beads with a wavelength of 808nm. The array is distributed around the lower outer region of cup 1-1, and its illumination direction corresponds to the driving layer in cup 1-1 composed of a photoresponsive liquid crystal elastomer, for outputting near-infrared light stimulation. In this embodiment, the power of a single LED bead is 40mW / cm². 2 The light emission angle is 120° to ensure uniform irradiation of the cup support layer.

[0050] The embodiment also includes a flexible power supply module 6, which uses a flexible lithium battery with a capacity of approximately 200-500mAh. This module is also encapsulated in another chamber inside the side panel, adjacent to the air pump 13, and connected to various electrical components via a flexible circuit 8. The flexible circuit 8 uses a polyimide substrate with a thickness of 0.03mm. It is electrically connected to the LED array 9, the power supply module 6, and the control system 4 via conductive silver paste. The outer side of the circuit is covered with a waterproof insulating coating to prevent short circuits caused by sweat corrosion.

[0051] The embodiment also includes a signal transmission module 12, which adopts the Bluetooth 5.0 protocol and can establish wireless communication with the user's mobile terminal APP to realize the functions of command reception and data feedback.

[0052] like Figure 6 As shown, the microprocessor unit 11 can coordinate the actions of three types of stimulation modules—heat, light, and airflow—based on pressure detection data, forming a pressure feedback-driven, multi-stimulus coordinated control method. The adjustment method described in this invention includes preliminary tension and shape adjustment and precise tension and shape adjustment; these two methods work together to achieve a dynamic and precise fit for the bra, as detailed below:

[0053] 1. Initial adjustment of tension and shape

[0054] Based on a preset pattern or preliminary sensing data, the drive stimulation generation module outputs a first stimulation signal, triggering the corresponding functional component to undergo the first stage of deformation, thus completing the initial morphological adaptation. The triggering methods include both passive and active triggering.

[0055] Initial Fit (Passive Trigger): When a user begins wearing the bra at room temperature (e.g., 25°C), the SMP material of shoulder straps 1-2 is in a pre-programmed "stretched state," approximately 10% longer than the fit length, facilitating easy on and off. After wearing, the temperature of the skin on the shoulder (approximately 34-37°C) is transferred to the shoulder straps, raising their temperature above the glass transition temperature (Tg, 34°C) of the SMP material. The material then activates its shape memory recovery effect, undergoing controlled shrinkage along the fiber weave direction. The shrinkage rate stabilizes at 8%-10% until the shoulder strap length adapts to the contours of the human shoulder, achieving automatic tightening and providing stable support.

[0056] Active triggering due to ambient temperature: If the ambient temperature is too low (e.g., outdoor temperature below 15℃ in winter), the body temperature transferred to the shoulder strap may not be sufficient to quickly raise the material temperature above Tg. At this time, the temperature sensor located at the root of the shoulder strap detects that the material temperature is below a preset threshold, and active auxiliary heating is required. The processing unit 11 drives the heating element 7 to locally heat the shoulder strap, and at the same time, the processing unit 11 drives the air pump 13 to deliver airflow heated to about 36℃ through the gas channel 14 and the airbag channel 15 to the shoulder strap area, assisting the material to quickly reach Tg and complete the contraction.

[0057] Users actively trigger the process by switching modes: Users can select different working modes, such as sports mode, leisure mode, and common mode, via a mobile app. The command is transmitted to the processing unit 11 via Bluetooth, and the processing unit 11 generates driving commands based on the preset mode. Taking sports mode as an example, the processing unit 11 activates the near-infrared LED array 9 to irradiate the LCE driving layer on the lower outer side of the cup 1-1 (irradiation time approximately 4 seconds), outputting light stimulation; simultaneously, the processing unit 11 activates the air pump 13, delivering airflow heated to 42°C through the cup branch channel to the preset microchannel inside the middle driving support layer, outputting airflow pressure stimulation. The carbon nanotubes in the cup's LCE layer absorb 808nm near-infrared light and efficiently convert it into heat energy. This, combined with the hot airflow transmitted through the microchannel, causes the LCE layer temperature to rapidly rise to its deformation temperature (45°C), triggering it to contract along a preset direction, increasing the curvature of the entire cup (approximately 20%), thereby enhancing the breast's coverage and support. When the user switches back to relaxation mode, LED illumination stops, the air pump shuts off, the temperature of the LCE layer in the bra cup decreases, material stress relaxes, and the curvature of the bra cup slowly returns to its initial state. Figure 5 As shown. When the user switches to the common mode, the control system 4 maintains the initial fit of the shoulder strap, the LED array remains off, the air pump 13 starts intermittently, and gently heated gas is directionally transmitted through the airbag channel 15 to help maintain a comfortable temperature and fit, and the pressure feedback module works normally.

[0058] 2. Precise adjustment of tension and shape

[0059] Building upon the initial adjustment described above, the precise adjustment step utilizes real-time wear status data fed back by the flexible sensing module. The processing unit 11 then generates secondary drive commands, outputting a second-level stimulus distinct from the first-level stimulus. This provides localized, fine-tuning deformation control of the functional components, achieving a precise fit to the human body's contours. This precise adjustment step is not limited to a specific stage but runs continuously throughout the entire wearing process, working in conjunction with the initial adjustment step to form a dynamic closed-loop adjustment.

[0060] Taking shoulder strap pressure adjustment as an example, after initial fitting, the pressure sensor 10 located at the base of the shoulder strap continuously collects shoulder pressure data and transmits it to the processing unit 11 in real time. When it detects that the local pressure on one side of the shoulder strap has risen to 2.5 kPa due to prolonged sitting or changes in body posture, exceeding the preset comfort threshold (2.2 kPa), the processing unit 11 initiates a local adjustment command. The processing unit 11 drives the heating element 7 corresponding to the area with excessive pressure. The heat from the heating element is conducted to the local SMP material, causing it to expand slightly and relax; the local tension in the area is released, and the value detected by the pressure sensor 10 gradually decreases. When the pressure value drops to 2.0 kPa, the processing unit 11 controls the heating element 7 to stop working. The entire adjustment process can be completed within seconds, with an adjustment accuracy of ≤0.2 kPa and a maximum heating temperature controlled at 39°C, which is below the temperature threshold that may cause skin discomfort, ensuring the safety of the adjustment process.

[0061] Similarly, in sports mode, after the curvature of the bra cup increases, the inner comfort layer can undergo localized slight volume expansion or contraction according to changes in temperature and humidity on the skin surface (this is a passive response of the temperature-sensitive material itself, and can also be regarded as an auxiliary precise fit). At the same time, the processing unit 11 can instruct the near-infrared LED array 9 to provide supplementary irradiation at a lower power based on the fit data fed back by the strain sensor, and make secondary fine adjustments to the curvature of the local area of ​​the bra cup to ensure that the chest is always evenly supported during exercise.

[0062] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0063] The detailed descriptions listed above are merely specific illustrations of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. An adaptive adjustable bra, characterized in that, It includes a bra body (1), a flexible sensing module, a stimulation generation module, and a processing unit (11). The bra body (1) includes at least one functional component made of deformable material and having a preset deformation structure; the flexible sensing module is integrated inside the bra body (1) for real-time acquisition of wear status data; the processing unit (11) is signal-connected to the flexible sensing module for receiving and analyzing wear status data and generating drive commands based on the analysis results; the stimulation generation module is electrically connected to the micro-processing unit (11) and acts on the functional component; The stimulation generation module responds to the drive command of the microprocessor unit (11), outputs a stimulation signal, and triggers the deformation structure in the corresponding functional component to undergo reversible deformation along a preset trajectory, which is used to automatically adjust the tension, curvature, volume or fit of the functional component to the human body.

2. The adaptive adjustable bra according to claim 1, characterized in that, The functional components include at least one of the following: shoulder straps (1-2), cups (1-1), side panels, underband, and center gore; the deformable material includes at least one of the following: thermally responsive shape memory polymer, light-responsive liquid crystal elastomer, temperature-sensitive hydrogel, and humidity-sensitive polymer.

3. The adaptive adjustable bra according to claim 2, characterized in that, The shoulder strap (1-2) adopts a layered structure composed of a shape memory polymer layer and an elastic rubber layer, and the shoulder strap (1-2) has an airbag channel (15) inside that communicates with the stimulation generation module.

4. The adaptive adjustable bra according to claim 2, characterized in that, The cup (1-1) has a multi-layer gradient structure, which includes, from the inside out, an inner comfort layer made of temperature-sensitive or humidity-sensitive material, an intermediate driving support layer composed of a shape memory polymer support layer and a light-responsive liquid crystal elastomer driving layer, and an outer breathable protective layer.

5. The adaptive adjustable bra according to claim 1, characterized in that, The flexible sensing module includes at least a pressure sensor (10) and a strain sensor. The flexible sensing module is integrated at the root of the shoulder strap, the inner wall of the cup, and the underband fitting area, and is used to collect data on shoulder strap pressure, cup fit, and chest movement status.

6. The adaptive adjustable bra according to claim 3, characterized in that, The stimulus generation module includes: At least one air pump (13) has a heating function, and its air outlet is connected to an airbag channel (15) provided inside the shoulder strap (1-2) via a gas channel (14); and At least one heating element (7) is attached to a segment of the shoulder strap (1-2) made of shape memory polymer.

7. The adaptive adjustable bra according to claim 4, characterized in that, The stimulation generation module includes at least one near-infrared LED array (9), the irradiation direction of which corresponds to the driving layer in the cup (1-1) composed of a photoresponsive liquid crystal elastomer.

8. The adaptive adjustable bra according to claim 1, characterized in that, The processing unit (11) pre-stores human physiological parameter thresholds, different scene adaptation models and user personalized preference parameters, which are used to analyze and calculate the wearable status data and generate corresponding driving instructions.

9. The adaptive adjustable bra according to claim 1, characterized in that, It also includes a flexible power supply module (6) that supplies power to the flexible sensing module, the processing unit (11) and the stimulation generation module, the flexible power supply module (6) being encapsulated in a reserved cavity inside the side panel of the bra body (1).

10. A method for adjusting an adaptive adjustable bra according to any one of claims 1-9, characterized in that, Includes the following steps: Tension and shape preliminary adjustment: The processing unit (11) drives the stimulation generation module to output at least one of thermal stimulation, light stimulation or airflow pressure stimulation according to the preset mode or preliminary sensing data, triggering the corresponding functional component to undergo the first-level deformation and complete the preliminary shape adaptation; Precise tension and shape adjustment: Based on the initial shape adaptation, the flexible sensing module provides real-time feedback on the wearing status data. The processing unit (11) generates a secondary driving instruction based on the wearing status data, which drives the stimulation generation module to output a second-level stimulus that is different from the first-level stimulus, and performs local fine-tuning deformation control on the functional components, thereby achieving a precise fit between the bra body (1) and the human body contour.

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