Cup structure with shaping function and bra

Abstract

The invention relates to the technical field of underwear, in particular to a cup structure with a shaping function and a bra. The cup structure comprises a cup body, wherein the cup body is a non-detachable structure consisting of a cup inner layer, a middle layer and an outer layer. The inner surface of the inner layer of each cup is provided with a thin front panel attaching functional area with gradually changing thickness, an ear position filling functional area, a side position pushing functional area, a lower support supporting functional area and a lower concave containing functional area containing BP points. And the functional areas are arranged around the concave accommodating functional area and are in smooth transition. By presetting the proportional relation of size parameters such as the thickness and the arc length of each functional area, the cups are used for filling upper sunken parts of drooping breasts, pushing and returning side fat and supporting the lower parts of the drooping breasts, so that a collaborative shaping system is formed. The problem that an existing bra cannot effectively correct the appearance defect of mastoptosis is solved, both precise shaping and high comfort are achieved, and parametric design is suitable for industrial mass production.

Description

Technical Field

[0001] This invention relates to the field of underwear technology, and more specifically, to a cup structure and bra with shaping function. Background Technology

[0002] As a core category of women's intimate apparel, the bra's core functional component is the cup. The structural design of the cup directly determines the bra's wearing comfort, health, and safety, and also directly affects its support and shaping effect on the breasts. As women age, especially into middle and old age, physiological factors such as breast tissue atrophy, relaxation of the breast suspensory ligaments, and decreased skin elasticity commonly lead to varying degrees of breast sagging. This is accompanied by appearance defects such as upper breast drooping and indentation, loose lower breast contours, and outward displacement of breast fat. These physiological characteristics differ significantly from the breast shape of younger women, posing entirely different demands on the functional design of bra cups. Bras now require not only basic support but also specialized filling, precise shaping, and shape correction functions for sagging breasts. This is a long-standing technical challenge that the current lingerie industry has failed to effectively address.

[0003] Existing patent US8167678B2 discloses a bra cup for breast augmentation and a bra with the same cup. This patent addresses the issues of breast sagging and insufficient fullness at the upper edge of the breast by designing a multi-segment differentiated cup structure. The cup is divided into three independent functional segments. The lower first segment forms a suspension-like support structure with a built-in stabilizer, simultaneously pushing the breast upwards and inwards. The upper outer second segment features a thickened filling structure to fill the gaps in the upper outer quadrant of the breast. Together, they achieve a rounded breast appearance, solving the problems of breast overflow and insufficient fullness at the upper edge of the breast that are common with traditional push-up bras. However, the cup body in this patent uses a spliced ​​structure of multiple blocks ultrasonically welded and then covered with a continuous layer. This not only results in a complex manufacturing process and high mass production costs, but also causes friction against the skin due to the seams, affecting wearing comfort. The cup's filling structure only covers the upper outer quadrant of the breast, failing to provide specific filling, support, and restraint designs for issues such as the ear-shaped area, indentation under the breast, and lateral fat expansion that occur after breast ptosis in middle-aged and elderly women. Therefore, its corrective effect on moderate to severe breast ptosis is very limited. Furthermore, the technical focus of this solution is concentrated on the combination and selection of materials and the splicing process. For breasts deformed by ptosis, the required support, pushing direction, and filling volume for each part are highly specific. Relying solely on differences in material properties and simple local thickening, lacking a refined and quantitative geometric design of the cup's inner surface curvature, makes it difficult to achieve precise "repositioning" and "reshaping" of sagging tissue. The purpose of its thickened areas is more inclined towards "fullness" rather than specifically "filling the depression caused by ptosis."

[0004] Existing patent CN201726873U discloses a half-piece wire-free bra cup with a push-up design and underwire. The core design is a three-layer composite molded wire-free cup structure. The cup is formed by bonding the outer, middle, and inner layers together in a single molding process. Simultaneously, five functional zones with varying thicknesses are molded onto the inner surface of the cup: the inner cup bend, the cup support, the underwire, the cup top, and the cup opening. By setting gradient thickness ranges for different functional zones, the design achieves inward push-up, upward support, and stable wearing effect for the breasts. This solution eliminates the traditional underwire structure, solving the industry pain point of underwire bras compressing the breasts and affecting blood circulation. Furthermore, the regional thickness design improves the problems of insufficient support and poor push-up effect in wire-free bras to some extent. However, the core design of this technical solution revolves around the common "breast lifting and support" needs of young women, without addressing the specific filling and correction structures for the core aesthetic defects that occur in middle-aged and elderly women with sagging breasts, such as upper breast sagging and indentation. Its functional areas only achieve basic support through thickness differences, without designing differentiated shapes for the inner curved surfaces of the cups, thus failing to achieve full-dimensional shape correction for sagging breasts. After wearing, it is difficult to improve the core aesthetic problem of upper breast indentation. Furthermore, the solution only broadly limits the thickness range of each functional area without revealing the geometric relationships and proportional relationships between them, resulting in poor consistency of shaping effect during mass production and an inability to consistently achieve the expected shape correction effect. In addition, the technical solution does not design a specific containment and limiting structure for the fixation needs of sagging breasts, which can easily lead to breast fat displacement and diminished shaping effect during wear, making it severely unsuitable for middle-aged and elderly women with sagging breasts.

[0005] Therefore, there is an urgent need in this field for a cup structure designed for sagging breasts that can achieve multi-dimensional shaping functions such as "lower support, side compression, and upper filling". This structure should have quantified geometric design parameters so that each functional area can work together precisely to form an integrated continuous curved surface shaping solution, so as to stably and reliably solve the industry technical problem of unattractive breast appearance after middle-aged and elderly women wear bras. Summary of the Invention

[0006] In view of this, the present invention aims to propose a cup structure and bra with shaping function to solve the problem that in the prior art, bra cups for middle-aged and elderly women with sagging breasts lack specific lifting, filling and shaping functions, and after wearing them, there are generally appearance defects such as sagging breasts and the upper part of the breasts collapsing and sunken. They cannot take into account both shaping effect and wearing comfort, and it is difficult to meet the core needs of this group for the aesthetic appearance of the breast shape.

[0007] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0008] This invention discloses a bra cup structure with shaping function, the bra cup structure comprising:

[0009] The cup body includes a cup inner layer; the inner surface of the cup inner layer is provided with multiple functional areas, including: an ear-position filling functional area located at the upper part of the cup body; a side-position pushing functional area located at the side of the cup body; a pull-up functional area located at the lower part of the cup body; and a recessed receiving functional area located in the central area of ​​the cup body, which includes the cup BP point.

[0010] The dimensions of each functional area satisfy a preset proportional relationship.

[0011] Optionally, the ear-position filling functional area is provided with the highest ear-position protrusion point TP. The thickness T4 of the highest ear-position protrusion point TP and the thickness T3 of the cup BP point satisfy the following proportional relationship: T4 is 1 to 10 times T3.

[0012] Optionally, the thickness range of the BP point of the bra cup is 2mm≤T3≤20mm; the thickness range of the highest point TP of the ear protrusion is 8mm≤T4≤40mm.

[0013] Optionally, the ear filling function area, the side pushing function area, and the undercarriage lifting function area are all arranged around the recessed receiving function area, and the function areas are smoothly connected.

[0014] Optionally, the cup body also includes a non-front edge of the cup, which is composed of one or more continuous curves; and the outer periphery of the cup body is enclosed by the front edge of the cup and the non-front edge of the cup to form a closed shape.

[0015] Optionally, the thickness of the non-front edge of the bra cup is T2, and the thickness of the front edge of the bra cup is T1. T1 and T2 satisfy the following proportional relationship: T2 is 1 to 5 times T1; and the value range of T1 is 0.3mm≤T1≤2.0mm, and the value range of T2 is 0.3mm≤T2≤4.0mm.

[0016] Optionally, on a vertical cross-section passing through the highest point TP of the ear protrusion, the inner surface of the cup inner layer 5 has an upper endpoint f1, the highest point TP of the ear protrusion, a dividing point A, a dividing point C, and a lower endpoint f2 connected in sequence; and the arc length L1 between f1 and TP, the arc length L2 between TP and A, the arc length L3 between A and C, and the arc length L4 between C and f2 satisfy the first arc length ratio relationship.

[0017] Optionally, on the horizontal cross-section passing through the BP point of the bra cup, the inner surface of the inner layer of the bra cup has a front end point e1, a dividing point e2, a dividing point e3 and a side end point e4 connected in sequence; and the arc length W1 between points e1 and e2, the arc length W2 between points e2 and e3, and the arc length W3 between points e3 and e4 satisfy the second arc length ratio relationship.

[0018] Optionally, the inner surface of the bra cup also has a front-fitting functional area, which is located at the front edge of the bra cup. The ear-filling functional area, the under-push-up functional area, and the recessed accommodating functional area are respectively connected to the front-fitting functional area.

[0019] Optionally, the thickness of the front panel fitting functional area is thinner than that of other functional areas, and the thickness of the cup body gradually increases from the front panel edge of the cup downwards to accommodate the functional area.

[0020] Optionally, the cup body also includes an outer cup layer and a middle cup layer located between the inner cup layer and the outer cup layer, wherein the inner cup layer, the middle cup layer and the outer cup layer are non-separable structures.

[0021] Optionally, the thickness of the bra cup body ranges from 10 to 40 mm.

[0022] The present invention also discloses a bra, including the cup structure described above.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] (1) The present invention constructs an integrated shaping system with multi-regional collaboration. Through the structural linkage of the five functional areas of the inner curved surface of the cup, the lower part of the breast is lifted, the side fat is pushed to the center and returned to its original position, the upper part is accurately filled, and the main body of the breast is stably accommodated and fixed, forming a complete shaping closed loop. It can specifically improve various appearance defects caused by breast ptosis, and the shaping effect is comprehensive and long-lasting.

[0025] (2) The present invention adopts a precise quantitative structural parameter design, and clearly defines the thickness range of each key position of the cup, the arc length of the key section, and the size ratio of each functional area. This can ensure the high consistency of the product shaping effect during mass production, and can also flexibly adjust the corresponding parameters according to different breast shape characteristics, with strong adaptability and feasibility.

[0026] (3) This invention achieves a balance between strong shaping effect and high wearing comfort. Through the thin gradient design of the front panel fitting functional area, the smooth and seamless connection between the edge of the cup and the human skin is achieved. At the same time, the composite structure of inner layer, outer layer and middle layer is fixed in one piece, with no splicing friction points. While ensuring strong shaping and correction ability, it greatly improves the fit and skin-friendliness of the wearer, and there is no local pressure discomfort.

[0027] (4) This invention is specifically adapted to the physiological morphological characteristics of sagging breasts. It designs special functional structures for specific morphological problems such as the collapse of the area corresponding to the ear, the pit under the breast, and the outward expansion of the lateral fat after the breasts sag. These structures can accurately match the contour characteristics of sagging breasts, achieve a natural and harmonious appearance correction effect, and fully meet the core needs of the target population for the beauty of the breast shape. Attached Figure Description

[0028] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0029] Figure 1 This is a front view of the cup structure of the present invention;

[0030] Figure 2 This is a side view of the cup structure of the present invention;

[0031] Figure 3 Front view of the bra cup structure with M1-M1 section mark.

[0032] Figure 4 This is a cross-sectional view of the bra cup structure along M1-M1;

[0033] Figure 5 This is a front view of the cup structure with the M2-M2 section mark marked.

[0034] Figure 6 This is a cross-sectional view of the bra cup structure along M2-M2;

[0035] Figure 7 This is a front view of the cup structure with the N1-N1 section marked.

[0036] Figure 8 This is a cross-sectional view of the cup structure along N1-N1;

[0037] Figure 9 This is a front view of the cup structure with the N2-N2 section marked.

[0038] Figure 10 This is a cross-sectional view of the cup structure along N2-N2;

[0039] Figure 11 This is a front view of the cup structure with the N3-N3 section marked.

[0040] Figure 12 This is a cross-sectional view of the bra cup structure along N3-N3;

[0041] Figure 13 This is a front view of the cup structure with the N4-N4 section marked.

[0042] Figure 14 This is a cross-sectional view of the bra cup structure along N4-N4;

[0043] Figure 15 A front view of the cup structure with the horizontal sectioning position of point BP marked;

[0044] Figure 16 A diagram showing the location of each region in the inner layer on the horizontal cross-section of the BP point of the bra cup structure;

[0045] Figure 17 A front view of the cup structure with the vertical sectioning position marked at TP point;

[0046] Figure 18 This is a diagram showing the location of each region in the inner layer on the vertical cross-section of the TP point of the bra cup structure.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Cup body; 2. Front edge of cup; 3. Non-front edge of cup; 4. BP point of cup; 5. Inner layer of cup; 6. Outer layer of cup; 7. Middle layer of cup; 51. Front fitting area; 52. Ear filling area; 53. Ear protrusion highest point TP; 54. Lateral pushing area; 55. Undercut lifting area; 56. Concave accommodating area. Detailed Implementation

[0049] The present invention will be further described below with reference to specific embodiments. First, it should be noted that the data in the following experimental examples were obtained by the inventors through numerous experiments. Due to space limitations, only a portion of these data is shown in the specification, and those skilled in the art can understand and implement the present invention based on this data. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art can make various modifications or alterations to the invention, and these modifications or alterations also fall within the scope of protection of this application.

[0050] like Figures 1 to 10 As shown, the present invention provides a bra cup structure with shaping function, the bra cup structure comprising:

[0051] The cup body 1 includes a cup inner layer 5. The inner surface of the cup inner layer 5 is provided with multiple functional areas, including: an ear-position filling functional area 52 located at the upper part of the cup body 1; a side-position pushing functional area 54 located at the side of the cup body 1; a lower pull-up functional area 55 located at the lower part of the cup body 1; and a recessed receiving functional area 56 located in the central area of ​​the cup body 1, which includes the cup BP point 4.

[0052] The dimensions of each functional area satisfy a preset proportional relationship.

[0053] This invention divides the inner surface of the inner layer 5 of the bra cup into multiple functional zones with clearly defined roles and establishes dimensional relationships between these zones. This achieves a four-in-one synergistic shaping mechanism for sagging breasts: lower support, lateral compression, upper filling, and central fixation. Compared to traditional bra cups that simply rely on a single curved surface or uniform thickness to contain the breast, the zoning design of this invention precisely addresses the morphological defects of sagging breasts: the lower support zone 55 corresponds to the lower sagging area of ​​the breast, the lateral compression zone 54 corresponds to the outward expansion area on the sides of the breast, the ear-shaped filling zone 52 corresponds to the concave area above the breast, and the concave receiving zone 56 serves as the core receiving space to receive and stably fix the displaced breast tissue. The functional zones work together in a preset dimensional ratio, allowing the three forces of support, lateral compression, and filling to be applied simultaneously to the corresponding parts of the breast, correcting breast shape from multiple dimensions and achieving a comprehensive, balanced, and natural shaping effect.

[0054] Specifically, each functional area is composed of different convex and concave curved surfaces on the inner surface of the inner layer 5 of the cup. The ear-position filling functional area 52, the side-position pushing functional area 54, and the under-push-up functional area 55 are curved surface structures that bulge towards the inside of the cup, while the concave-receiving functional area 56 is a curved surface structure that is concave towards the outside of the cup; and the ear-position filling functional area 52 is Figure 1 The closed region formed by curves R4-R3-A-R6-R4; the lateral thrust functional area 54 is Figure 1 The closed region formed by curves V1-US-R1-R2-V1; the lower support functional area 55 is Figure 1 The closed region formed by curves R1-S-R0-R1; the concave accommodating functional area 56 is Figure 1 The cup is enclosed by curves R3-C-R6-A-R3. The ear-position filling area 52, the side-position pushing area 54, and the under-push lifting area 55 all surround the concave containment area 56, with smooth transitions between them, forming a layout structure with the concave containment area 56 as the core and the other areas surrounding it. The concave containment area 56 is located in the center of the cup, serving as the final location for securing breast tissue; the ear-position filling area 52 is located above the concave containment area 56, corresponding to the upper concave area of ​​the breast; the side-position pushing area 54 is located to the side of the concave containment area 56, corresponding to the lateral outward expansion area of ​​the breast; and the under-push lifting area 55 is located below the concave containment area 56, corresponding to the lower sagging area of ​​the breast. This surrounding layout ensures that three forces converge simultaneously from different directions on the concave containment area 56, stably containing breast tissue in the center of the cup and avoiding problems such as tissue displacement and diminished shaping effect common in traditional cups.

[0055] More specifically, the concave accommodating functional area 56 includes the breast BP point 4. The cup BP point 4 is the corresponding position of the human breast point on the cup body 1, and is the core design benchmark of the entire cup structure. The dimensional parameters of each functional area include one or more of the following: thickness, arc length, and curvature. The preset proportional relationship refers to the specific numerical correlation between the dimensional parameters of different functional areas, such as the proportional relationship between the thickness of the ear-position filling functional area 52 and the thickness of the concave accommodating functional area 56, or the arc length proportional relationship of each functional area on a specific cross-section. These preset proportional relationships are based on the physiological morphological characteristics of sagging breasts in middle-aged and elderly women and ergonomic design, which can ensure that the shaping force of each functional area matches the physiological characteristics of the breast, both fully correcting morphological defects and avoiding excessive compression that causes discomfort.

[0056] It should be noted that the functional areas are seamlessly connected by continuous curved surfaces, with the thickness of the transition areas varying gradually, without obvious boundary steps or seams. This avoids friction and pressure marks on the chest skin during wear, while ensuring uniform transmission of shaping force, further enhancing wearing comfort. Maintaining a preset proportional relationship between the dimensional parameters of each functional area is crucial to achieving the technical effect of this invention. If multiple functional areas are simply set without establishing a dimensional relationship between them, the effects of each area will be isolated and discrete, making it difficult to create a synergistic effect. For example, if the size of the ear-position filling functional area 52 is too large while the size of the lateral pushing functional area 54 is too small, it may lead to overfilling above the breast and insufficient lateral pushing, resulting in an unbalanced shaping effect. This invention establishes a proportional relationship between the dimensional areas, ensuring that the magnitude and range of the lifting, lateral pushing, and filling forces are matched and coordinated, forming an organic, integrated shaping system. This ensures stable and reproducible ideal shaping effects for breasts of different shapes and degrees of sagging.

[0057] Specifically, the ear-position filling functional area 52 is provided with the highest ear-position protrusion point TP53. The thickness T4 of the highest ear-position protrusion point TP53 and the thickness T3 of the cup BP point 4 satisfy the following proportional relationship: T4 is 1 to 10 times T3.

[0058] More specifically, the thickness range of the cup BP point 4 is 2mm≤T3≤20mm; the thickness range of the highest point of the ear protrusion TP53 is 8mm≤T4≤40mm.

[0059] It should be noted that the highest point of the ear-position protrusion, TP53, is the most prominent point on the inner surface of the inner layer 5 of the cup, and its location corresponds to the concave area above the breast caused by sagging. The thickness of the cup's BP point 4 is designed with the core principle of ensuring no pressure on the nipple area and comfortable wear. The thickness T4 of the highest point of the ear-position protrusion, TP53, needs to be matched and designed according to the degree of upper breast concavity. The ratio between it and the thickness T3 of the cup's BP point 4 limits the reasonable range of filling thickness, avoiding insufficient or excessive filling. The ratio of T4 to T3 is limited to a range of 1 to 10 because if the ratio of T4 to T3 is less than 1, i.e., T4 < T3, the protrusion height of the ear-position filling functional area 52 is insufficient, and it cannot effectively fill the concave area above the breast, and the upper edge of the breast will still be visible after wearing. If the ratio of T4 to T3 is greater than 10, i.e., T4 is much greater than T3, it will be overfilled, resulting in an excessively high bulge above the breast, an unnatural appearance, and may also cause abnormal pressure on the upper breast. In addition, T3 is controlled at 2-20mm and T4 at 8-40mm to accommodate the needs of different bra sizes from A cup to G cup. Smaller sizes use smaller values ​​and larger sizes use larger values. By coordinating the thickness parameters and proportional relationships, the cup structure of this invention is suitable for women with different bust sizes and achieves a consistent and controllable shaping effect across all sizes.

[0060] This invention establishes a proportional relationship between the thickness T4 of the highest point TP53 of the ear-position protrusion and the thickness T3 of the BP point, ensuring that the protrusion height of the ear-position filling functional area 52 matches the basic thickness of the cup body 1. This guarantees that the filling force is adapted to the breast volume, avoiding overfilling of small breasts or underfilling of large breasts. Secondly, by setting the highest point TP53 of the ear-position protrusion in the ear-position filling functional area 52, the filling force is concentrated on the part of the breast that needs the most support, ensuring that the protrusion thickness of the ear-position filling functional area 52 is sufficient to completely fill the sunken area of ​​the upper part of the sagging breast, thus completely concealing the shape defects caused by the sagging and depression of the breast. Moreover, different proportions and thickness values ​​can be precisely adapted to the breast filling needs of different degrees of sagging, achieving both targeted appearance modification effects and avoiding the wearing pressure and bulky appearance caused by excessive filling thickness, thus achieving a balance between filling effect and wearing comfort.

[0061] Specifically, the cup body 1 also includes a non-front edge 3, which is composed of one or more continuous curves; and the outer periphery of the cup body 1 is enclosed by the front edge 2 and the non-front edge 3 to form a closed shape.

[0062] More specifically, the thickness of the non-front edge 3 of the bra cup is T2, and the thickness of the front edge 2 of the bra cup is T1. T1 and T2 satisfy the following proportional relationship: T2 is 1 to 5 times T1; and the value range of T1 is 0.3mm≤T1≤2.0mm, and the value range of T2 is 0.3mm≤T2≤4.0mm.

[0063] It should be noted that the front edge 2 of the bra cup refers to the outer perimeter of the cup near the midline of the chest, which directly contacts the skin of the chest, and its thickness T1 is designed to be extremely thin. The non-front edge 3 of the bra cup includes the edge of the cup near the armpit, as well as the edges of the upper band and underband of the cup body 1, and its thickness T2 is relatively thicker. This is because the non-front edge 3 needs to connect to external components such as shoulder straps and side panels, and also bears the structural support function of the cup edge, so it needs a certain thickness to ensure strength; while the front edge 2 of the cup does not need to bear excessive tension, and its primary goal is a close fit, so it can be designed to be thinner. Limiting the ratio of T2 to T1 to within the range of 1 to 5 times ensures a coordinated transition in thickness between the two, and avoids edge stress concentration or uneven appearance caused by excessive thickness difference. In addition, the non-front edge 3 of the bra cup is composed of one or more continuous curves to adapt to the complex curved transition needs of different breast shapes in areas such as the armpit and ear, so that the edge of the bra cup can closely fit the curve of the human body and avoid gaps or pressure due to shape mismatch.

[0064] This invention achieves multiple technical benefits through precise control and proportional limitation of the cup edge thickness. First, the extremely thin design of the front edge 2 of the cup allows for a smooth transition between the front edge of the cup and the skin of the chest, achieving a seamless fit against the chest and preventing it from being visible under clothing, thus enhancing the invisibility effect. Second, the moderately thickened non-front edge 3 of the cup provides necessary structural support for the entire cup, ensuring sufficient strength and durability at key stress points such as the shoulder strap connection and side panel joints. Moreover, by limiting the thickness ratio, a smooth thickness transition is formed at the junction of the front edge 2 and the non-front edge 3 of the cup, avoiding wrinkles or stress concentration caused by abrupt changes in thickness, thus improving the product's appearance quality and lifespan. At the same time, the non-front edge 3 of the cup adopts a continuous curve design, allowing for customized edge curvature according to different breast shapes, making the fit between the cup and areas such as the armpits and earlobes more precise, further improving the fit between the cup edge and the skin, and eliminating problems such as edge lifting and gaps.

[0065] Specifically, on the vertical cross-section passing through the highest point TP53 of the ear protrusion, the inner surface of the cup inner layer 5 has an upper endpoint f1, the highest point TP53 of the ear protrusion, the dividing point A, the dividing point C and the lower endpoint f2 connected in sequence; and the arc length L1 between f1 and TP, the arc length L2 between TP and A, the arc length L3 between A and C, and the arc length L4 between C and f2 satisfy the first arc length ratio relationship.

[0066] More specifically, arc length L1 corresponds to the upper half of the raised transition section of the ear-position filling functional area 52 and the area above the lateral pushing functional area 54, covering the complete curved surface from the upper edge of the cup ear position endpoint f1 to the highest point of the ear position protrusion TP53. It is the connecting section between the ear-position filling functional area 52 and the cup ear structure, achieving a smooth transition between the filling curved surface and the edge of the cup. Arc length L2 corresponds to the lower half of the core raised filling section of the ear-position filling functional area 52, from the highest point of the ear position protrusion TP53 to the upper boundary of the concave accommodating functional area 56. The curved surface at dividing point A is the core functional section for accurately filling the upper concave area of ​​the breast; L3 corresponds to the vertical containment depth of the concave containment functional area 56, which is the complete curved surface between the upper and lower dividing points A and C of the concave containment functional area 56, and is the core containment and fixation section of the main breast tissue; L4 corresponds to the vertical support section of the lifting functional area 55, which covers the curved surface from the lower dividing point C of the concave containment functional area 56 to the lower end point f2 of the lower edge of the cup, and is the core functional section for filling and lifting the lower part of the breast. The first arc length ratio relationship includes: L1≥15mm, L2≥15mm, and L1 is 0.6~4 times L2; ​​L3≥25mm, and L3 is 0.6~3 times the sum of L1 and L2; L4≥8mm, and L4 is 0.2~0.5 times the sum of L1 and L2, while L4 is 0.3~1 times L1; the total arc length of this vertical section L=L1+L2+L3+L4.

[0067] It should be noted that the key points on the vertical section are not randomly selected, but precisely correspond to the boundaries of the functional areas: the upper endpoint f1 is located at the upper edge of the cup and is the starting point of the ear-position filling functional area 52; the highest point TP53 of the ear-position protrusion is the core protrusion position of the ear-position filling functional area 52; the dividing point A is the vertical intersection of the ear-position filling functional area 52 and the concave accommodating functional area 56; the dividing point C is the vertical intersection of the concave accommodating functional area 56 and the undercut supporting functional area 55; and the lower endpoint f2 is located at the bottom edge of the cup and is the ending point of the undercut supporting functional area 55. By setting these points and establishing the arc length ratio, it is equivalent to establishing a "geometric coordinate system" for the vertical section of the cup, so that the vertical range of each functional area can be precisely quantified and controlled. This parametric design method gets rid of the limitations of traditional cups that rely on experience-based adjustments, making the shaping effect highly repeatable and predictable, and providing technical support for industrial mass production.

[0068] By setting multiple key dividing points on the vertical cross-section and establishing arc length ratios, this invention achieves precise control over the vertical shape of the breast. When the aforementioned arc lengths meet the preset ratios, the three functions of lifting, containing, and filling work together in the vertical direction: the ear-position filling functional area 52, through the two convex curved surfaces corresponding to L1 and L2, forms a continuous and fitting filling support above the breast, accurately filling the upper edge depression area caused by breast sagging with an appropriate convex height, completely concealing the shape defects caused by breast sagging and depression; the depression containing functional area 56, through the vertical containing depth corresponding to L3, adapts to the depression curved surface of the breast's physiological shape, completely receiving and stably fixing the main breast tissue, preventing the breast tissue from shifting up and down during wear; the lower lifting functional area 55, through the vertical support section corresponding to L4, applies a stable upward supporting force to the sagging tissue in the lower part of the breast, filling the depression below the breast while pushing the sagging breast tissue upward, keeping it stably within the core containing area. This synergistic mechanism gives the breasts a uniform and full contour curve from the lower pole to the upper edge, completely eliminating the disharmony that is common in traditional bra cups, such as "insufficient support at the top and excessive squeezing at the bottom" or "excessive support at the top and emptiness at the bottom," achieving a natural and firm shaping effect.

[0069] Specifically, on the horizontal cross-section passing through the BP point 4 of the bra cup, the inner surface of the inner layer 5 of the bra cup has a front end point e1, a dividing point e2, a dividing point e3 and a side end point e4 connected in sequence; and the arc length W1 between points e1 and e2, the arc length W2 between points e2 and e3, and the arc length W3 between points e3 and e4 satisfy the second arc length ratio relationship.

[0070] More specifically, arc length W3 corresponds to the horizontal pushing range of the lateral pushing functional area 54, covering the complete curved surface from the axillary side boundary of the cup to the inner boundary of the lateral pushing functional area 54. It is the core functional area for pushing and repositioning the lateral breast fat towards the center. Arc length W2 corresponds to the horizontal core receiving section of the concave receiving functional area 56, covering the complete curved surface from the inner boundary of the lateral pushing functional area 54 to the inner boundary of the front fitting functional area 51. It is the core section for receiving the breast fat pushed and repositioned by the side and for stabilizing and fixing the main body of the breast in the horizontal direction. Arc length W1 corresponds to the horizontal fitting transition section of the front fitting functional area 51, covering the complete curved surface from the inner boundary of the front fitting functional area 51 to the side boundary of the anterior chest midline of the cup. It is the core section for achieving seamless fitting between the front edge of the cup and the human chest. The second arc length ratio relationship includes: W1≥5mm, W2≥15mm, and W2 is 1 to 6 times W1; W3≥10mm, and W3 is 0.3 to 1 times the sum of W1 and W2, while W3 is 1 to 5 times W1; the total arc length of this horizontal profile is W=W1+W2+W3.

[0071] It should be noted that the key points on the horizontal cross-section are not randomly selected, but precisely correspond to the boundaries of the functional areas: the side endpoint e4 is the axillary side boundary point of the inner surface of the cup inner layer 5 on this horizontal cross-section, corresponding to the axillary side endpoint of the non-front edge 3 of the cup, and is the connection boundary between the cup and the bra side panel structure; the dividing point e3 is the inner boundary point between the side pushing functional area 54 and the concave receiving functional area 56; the dividing point e2 is the boundary point between the concave receiving functional area 56 and the front fitting functional area 51; the front point e1 is the front midline side boundary point of the inner surface of the cup inner layer 5 on this horizontal cross-section, corresponding to the front end point of the front edge 2 of the cup, and is the connection boundary between the left and right cups at the midline of the human chest. By setting these points and establishing the arc length ratio, it is equivalent to establishing a complete "horizontal geometric coordinate system" for the horizontal cross-section of the cup.

[0072] This invention quantitatively designs the horizontal range W1 of the lateral pushing functional area 54 to ensure that appropriate pushing pressure and range are applied to the outward-spreading fat on the sides of the breast, effectively gathering the fat towards the center of the cup and improving the outward-spreading shape of the breast. Through the proportional design of the horizontal width W2 of the concave accommodating functional area 56 relative to W1, it ensures that the pushed-in breast tissue has sufficient space to be stably received and fixed, preventing fat regression or displacement, and ensuring a long-lasting and stable shaping effect. Through the proportional design of the horizontal range W3 of the front-fitting functional area 51 relative to W1 and W2, it ensures that the front edge of the cup smoothly fits the chest skin, achieving a seamless wearing effect and preventing it from being visible under clothing. Furthermore, the proportional relationships of the horizontal and vertical sections work together to construct a three-dimensional quantitative design system for the inner curved surface of the cup, allowing for precise quantification and control of the horizontal range of action and the amplitude of protrusion / concavity of each functional area. This all-dimensional parametric design method completely breaks away from the industry limitations of traditional bra cups that rely on manual experience for adjustment and lack quantitative standards for horizontal design. It makes the horizontal lateral push and gathering fixation effects of different batches and sizes of products highly repeatable and predictable, providing technical support for the industrialization and standardized mass production of products.

[0073] Specifically, the inner surface of the inner layer 5 of the cup is also provided with a front-facing conforming functional area 51. The front-facing conforming functional area 51 is located at the front edge of the cup, and the ear-position filling functional area 52, the under-push-up functional area 55 and the recessed receiving functional area 56 are respectively connected to the front-facing conforming functional area 51.

[0074] More specifically, the thickness of the front panel fitting functional area 51 is thinner than that of other functional areas, and the thickness of the cup body 1 gradually increases from the front panel edge 2 of the cup downwards to accommodate the functional area 56.

[0075] It should be noted that the front panel mounting function area 51 is... Figure 1The enclosed area, consisting of R0-C-R7-V1-R0, directly contacts the skin of the chest. Its core function is to achieve a smooth transition and a seamless fit between the bra cup and the body. This area is designed to be the thinnest, with the thickness gradually increasing from the front edge 2 of the bra cup downwards to accommodate the functional area 56. This is primarily based on the following considerations: First, the front edge 2 of the bra cup, as the forefront of contact between the cup and the chest skin, is extremely thin, allowing for a seamless connection between the cup edge and the skin, avoiding noticeable edge lines under clothing and achieving an invisible effect. Second, the gradual increase in thickness from front to back creates a natural slope transition, avoiding stress concentration or uneven appearance that might result from abrupt changes in thickness. Furthermore, since the ear filling functional area 52, the under-lifting functional area 55, and the recessed accommodating functional area 56 are respectively connected to the front panel fitting functional area 51, this gradual thickness design makes the force transmission from the fitting area to the filling area, lifting area, and accommodating area gentle and continuous, without causing a sudden pressure on the skin.

[0076] The ultra-thin edge design of the front-fitting functional area 51 of this invention allows the front edge of the cup to smoothly fit against the skin of the chest, avoiding marks or edge contours under clothing, thus meeting women's core needs for a beautiful and invisible bra after wearing. Moreover, the gradient design with the thickness gradually increasing from front to back eliminates the step-like feeling that may be caused by abrupt changes in thickness, making the contact between the edge of the cup and the skin soft and natural, without pressure or friction discomfort during long-term wear. In addition, the ear-position filling functional area 52, the under-support lifting functional area 55, and the recessed receiving functional area 56 are respectively connected to the front-fitting functional area 51, so that the shaping force of upper filling, lower support, and center receiving can be smoothly transitioned to the front edge of the chest through the front-fitting functional area 51, forming a complete closed loop of force transmission, and avoiding the reduction of the shaping effect due to the abrupt transition of the edge.

[0077] Specifically, the cup body 1 also includes an outer cup layer 6 and an intermediate cup layer 7 located between the inner cup layer 5 and the outer cup layer 6. The inner cup layer 5, the intermediate cup layer 7, and the outer cup layer 6 are an inseparable structure.

[0078] More specifically, the thickness of the cup body 1 ranges from 10 to 40 mm.

[0079] It should be noted that the inner layer 5 of the bra cup directly contacts the human skin. Its inner surface is equipped with multiple functional areas, including an ear-position filling area 52, a side-position pushing area 54, an under-push-up area 55, a recessed accommodating area 56, and a front-facing conforming area 51. This is the core layer for achieving breast shaping. The inner layer 5 can be composed of one or more layers of material, such as simple sponge or a combination of sponge, fabric, or other materials, with a thickness ranging from 0.1 to 10 mm. The outer layer 6 of the bra cup is located on the outermost side of the bra cup body 1 and determines the cup's appearance and surface texture. The outer layer 6 can also be composed of one or more layers of material, such as simple sponge or a combination of sponge, fabric, or other materials, with a thickness ranging from 0.1 to 20 mm. The shape of the outer layer 6 is based on the inner layer 5, following the product's design to ensure a beautiful and smooth overall shape. The middle layer 7 of the bra cup is located between the inner layer 5 and the outer layer 6, serving to fill, support, and transition the cup. The middle layer 7 can be composed of one or more layers of material, including simple sponge or a combination of sponge and other materials, with a maximum thickness of 0-25mm. The presence of the middle layer allows for the realization of the total thickness of the bra cup body 1, while providing sufficient material support for the convex and concave curved surfaces of the inner functional areas. Furthermore, the overall thickness of the bra cup body 1 is limited to 10-40mm based on the following considerations: the lower limit of 10mm ensures sufficient material thickness to achieve the required protrusions, depressions, and thickness differences in each functional area, thus providing sufficient shaping force; the upper limit of 40mm controls the overall volume and weight of the cup, avoiding a bulky appearance or excessive burden due to excessive thickness, balancing shaping effect with lightweight wear. In addition, the three-layer integrated structure of the bra cup body 1 complements the aforementioned curved surface design of each functional area. It is precisely because of the use of one-piece molding process that the convex and concave curved surfaces of multiple functional areas on the inner surface of the cup inner layer 5 can be precisely shaped, and the transition between each functional area can be smooth and seamless.

[0080] This invention uses a molding process to integrally form the inner layer 5, middle layer 7, and outer layer 6 of the bra cup. This not only ensures that the curved shapes of each functional area are precisely fixed and not easily deformed over long-term use, resulting in a durable and stable shaping effect, but also avoids friction points and foreign body sensations that may occur with sewing or gluing. This makes the overall feel of the bra cup smooth and delicate, and fits naturally against the skin, greatly improving wearing comfort. At the same time, the thickness range of 10-40mm ensures sufficient material thickness to realize the convex and concave curved surface design of each functional area, while effectively controlling the overall volume and weight of the bra cup, achieving a balance between powerful shaping and lightweight wear. In addition, the integral molding process allows multiple functional areas on the inner surface of the inner layer 5 of the bra cup to be precisely formed with smooth and natural transitions, ensuring that multiple forces such as lifting, pushing, filling, and conforming work together to form a complete three-dimensional shaping system.

[0081] The present invention also provides a bra, including the cup structure described above.

[0082] It should be noted that the bra typically includes two cup bodies 1, a center gore connecting the two cup bodies 1, side panels and back panels, shoulder straps, and other conventional bra components. The bra's appearance design is compatible with the flat curved surface design of the outer layer 6 of the cups. However, the key point is that both cup bodies 1 adopt the cup structure described in this invention. Due to the adoption of the cup structure of this invention, the bra as a whole has a special shaping ability for sagging breasts, which can effectively meet the core pursuit of breast shape beauty for middle-aged and elderly women and women with breast sagging problems.

[0083] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various alterations and modifications without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A cup structure with shaping function, characterized in that, The cup structure includes: The cup body (1) includes a cup inner layer (5); the inner surface of the cup inner layer (5) is provided with a plurality of functional areas, including: an ear-position filling functional area (52) located at the upper part of the cup body (1); a side-position pushing functional area (54) located at the side of the cup body (1); a pull-up functional area (55) located at the lower part of the cup body (1); and a recessed receiving functional area (56) located in the central area of ​​the cup body (1), and it includes the cup BP point (4); The size parameters of each functional area satisfy a preset proportional relationship.

2. The cup structure according to claim 1, characterized in that, The ear filling functional area (52) is provided with the highest ear protrusion point TP (53). The thickness T4 of the highest ear protrusion point TP (53) and the thickness T3 of the cup BP point (4) satisfy the following proportional relationship: T4 is 1 to 10 times T3.

3. The cup structure according to claim 2, characterized in that, The thickness range of the cup BP point (4) is 2mm≤T3≤20mm; the thickness range of the highest point TP (53) of the ear protrusion is 8mm≤T4≤40mm.

4. The cup structure according to claim 1, characterized in that, The ear filling functional area (52), the side pushing functional area (54), and the underpush lifting functional area (55) are all arranged around the recessed receiving functional area (56), and the functional areas are smoothly connected.

5. The cup structure according to claim 1, characterized in that, The cup body (1) also includes a non-front edge (3) of the cup, which is composed of one or more continuous curves; and the outer periphery of the cup body (1) is enclosed by the front edge (2) of the cup and the non-front edge (3) of the cup to form a closed shape.

6. The cup structure according to claim 5, characterized in that, The thickness of the non-front edge (3) of the bra cup is T2, and the thickness of the front edge (2) of the bra cup is T1. T1 and T2 satisfy the following proportional relationship: T2 is 1 to 5 times T1; and the value range of T1 is 0.3mm≤T1≤2.0mm, and the value range of T2 is 0.3mm≤T2≤4.0mm.

7. The cup structure according to claim 1, characterized in that, On the vertical cross-section passing through the highest point TP (53) of the ear protrusion, the inner surface of the cup inner layer (5) has an upper end point f1, the highest point TP (53) of the ear protrusion, a dividing point A, a dividing point C and a lower end point f2 connected in sequence; and the arc length L1 between f1 and TP, the arc length L2 between TP and A, the arc length L3 between A and C, and the arc length L4 between C and f2 satisfy the first arc length ratio relationship.

8. The cup structure according to claim 1, characterized in that, On the horizontal cross section passing through the BP point (4) of the cup, the inner surface of the cup inner layer (5) has a front end point e1, a dividing point e2, a dividing point e3 and a side end point e4 connected in sequence; and the arc length W1 between points e1 and e2, the arc length W2 between points e2 and e3 and the arc length W3 between points e3 and e4 satisfy the second arc length ratio relationship.

9. The cup structure according to claim 1, characterized in that, The inner surface of the inner layer (5) of the bra cup is also provided with a front-facing fitting function area (51). The front-facing fitting function area (51) is located at the front edge of the bra cup, and the ear-position filling function area (52), the under-push-up function area (55), and the recessed accommodating function area (56) are respectively connected to the front-facing fitting function area (51).

10. The cup structure according to claim 9, characterized in that, The thickness of the front panel fitting area (51) is thinner than the other functional areas, and the thickness of the cup body (1) gradually increases from the front panel edge (2) of the cup towards the recessed receiving area (56).

11. The cup structure according to claim 1, characterized in that, The cup body (1) also includes an outer cup layer (6) and a middle cup layer (7) located between the inner cup layer (5) and the outer cup layer (6). The inner cup layer (5), the middle cup layer (7) and the outer cup layer (6) are an inseparable structure.

12. The cup structure according to claim 1, characterized in that, The thickness of the cup body (1) ranges from 10 to 40 mm.

13. A bra, characterized in that, Includes the cup structure as described in any one of claims 1 to 12.

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