A light sports underwear

Abstract

The utility model discloses a kind of light sportswear, including front piece, back and two shoulder straps connected before and after, further include: extension piece, from the middle part of the back upwards, the left and right ends of the extension piece are respectively extended upwards, form the connecting portion connected with the shoulder strap;Support sheet assembly is built-in in the extension piece, the support sheet assembly includes the main support band extending along human back longitudinally and at least one rib support band extending from the side of the main support band, the connecting area of the rib support band and the main support band constitutes flexible hinge part, the distal end of the rib support band away from the main support band and the surface layer and / or inner lining layer of extension piece are fixedly connected.The utility model provides basic stability when stationary, when moving (such as deep breathing, chest expansion) can be through the deformation of flexible hinge part self-adapting back expansion, reduce the restraint and breathing restriction caused by traditional integrated back piece, solve the contradiction between support and activity freedom.

Description

Technical Field

[0001] This utility model relates to the field of sports underwear technology, and in particular to a lightweight sports underwear. Background Technology

[0002] Sports bras are an important part of modern women's sportswear. Their core function is to provide effective support for the breasts during exercise, reducing excessive breast displacement during high-intensity activities, thereby improving athletic performance and reducing the risk of potential sports injuries. With advancements in sports science and materials technology, the design of sports bras has evolved from simple tight-fitting garments to complex systems that integrate ergonomics, materials mechanics, and thermal comfort.

[0003] Currently, sports bras on the market generally tend to use wide and tight shoulder straps, a strong binding band, and a large-area back structure to achieve sufficient support and stability. For example, a single or large-area reinforced structure on the back, such as a widened back panel or embedded rigid padding, can restrict normal deformation and skin stretching during high-intensity dynamic activities like deep breathing, large chest expansion, or torso twisting. This can lead to a noticeable feeling of constriction, pressure, and discomfort, and even affect breathing depth and freedom of movement. Some designs use elastic materials to improve mobility, but this comes at the cost of support and stability, making it impossible to maintain effective support during high-impact activities. Furthermore, traditional sports bras rely on a limited size system and discrete hook-and-eye clasp adjustment levels. Since the chest and underbust measurements of different users, and even the same user, vary dynamically and individually under different exercise conditions, this fixed size and limited adjustment method makes it difficult to achieve a precise and close fit. If it is too loose, it will lead to insufficient support and friction; if it is too tight, it will cause marks and aggravate pressure and discomfort. The size adjustment function of the back is particularly lacking, and it cannot meet the user's personalized needs for back wrapping. Utility Model Content

[0004] The purpose of this utility model is to provide a lightweight sports bra to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: This utility model provides a lightweight sports bra, including a front panel, a back panel, and two shoulder straps connecting the front and back, and also includes: An extension piece extends upward from the middle of the rear section, with its left and right ends extending upward to form a connecting portion that connects to the shoulder strap. A support plate assembly is built into the extension plate. The support plate assembly includes a main support band extending longitudinally along the back of the human body and at least one rib support band extending laterally from the main support band. The connection area between the rib support band and the main support band forms a flexible hinge. The distal end of the rib support band away from the main support band is fixedly connected to the surface layer and / or inner lining layer of the extension plate.

[0006] This invention transforms static, large-area back support into a dynamic support system consisting of a centrally rigidly anchored main support belt, laterally elastically linked rib support belts and flexible hinges, and an extension plate with a flexible force transmission interface. It provides basic stability when stationary and can adapt to back expansion through the deformation of the flexible hinges during movement (such as deep breathing and chest expansion), reducing the feeling of constriction and breathing restriction caused by traditional one-piece back panels and resolving the contradiction between support and freedom of movement.

[0007] In an optional embodiment, the support plate assembly is made of a low-elongation elastic material and is wrapped between the surface layer and the inner lining layer of the extension plate. The low-elongation elastic material is a polyurethane film, thermoplastic polyurethane sheet, or elastic mesh, and the longitudinal elongation of the support plate assembly is less than 50% of that of the surface material of the extension plate. This improved solution uses a low-elongation elastic material to provide resistance to excessive deformation, ensuring the functionality of the support plate assembly as a mechanical skeleton, effectively resisting longitudinal tension, preventing the overall structure from deforming upwards during movement, and converting the shoulder strap tension into effective lifting force.

[0008] In an optional embodiment, the flexible hinge portion is formed by an incompletely bonded area between the main support strip and the rib support strip, or by a bridging area with higher elongation formed locally during weaving or thermoforming. The incompletely bonded area utilizes the material's inherent elasticity and bending properties, creating a movable hinge effect by controlling the bonding area at predetermined locations; the process is simple and reliable. The bridging area employs localized high-elasticity bridging, achieving a transition between rigidity and flexibility through changes in local material ratios or structures while maintaining integral molding, resulting in a more complete appearance and potentially better durability.

[0009] In an optional embodiment, the back section has a notch in the middle, located directly below the extension piece, and the notch is semi-elliptical or semi-circular. This notch, situated in the area of ​​the back where sweat accumulates most, serves as a direct ventilation channel, significantly accelerating sweat evaporation and alleviating the feeling of stuffiness.

[0010] In an optional embodiment, the outer edge of the notch is provided with a support wing, the inner edge of which matches the arcuate contour of the notch. The support wing acts as a reinforcement for the notch, reinforcing the edge to prevent the area from losing its shape, collapsing, or curling after repeated stretching and sweat soaking, ensuring the notch maintains its design shape and function over the long term.

[0011] In an optional embodiment, the support wing is composed of reinforcing webbing integrally formed with the rear axle, the width of which gradually narrows from the middle to both ends. This improvement eliminates the friction discomfort that may be caused by seams, improves the overall aesthetics and reliability, and the gradual narrowing of the support wing's width from the middle to both ends ensures that the middle of the upper edge of the notch bears the main downward pull from the upper extension piece, while the force gradually decreases towards both ends, and the width narrows accordingly, achieving a reasonable distribution of material and a smooth transition of pressure, avoiding abrupt cut-off points at both ends of the support wing, and further improving wearing comfort.

[0012] In an optional embodiment, the bottom edges of the front panel and the back panel share a common elastic underband. This elastic underband is disconnected at the position corresponding to the notch. One end of the elastic underband has a first connecting buckle, and the other end extends to form an adjustment strap. The adjustment strap passes through the first connecting buckle and folds back, then is secured by a first Velcro assembly on the adjustment strap and / or the elastic underband. The disconnection means that both ends of the elastic underband terminate at the edge of the notch, allowing for continuous adjustment via the adjustment strap and Velcro assembly. Users can fine-tune the fit according to their daily comfort, breathing depth, or the desired level of support during different activities.

[0013] In an optional embodiment, the connecting portion on the extension for attaching the shoulder strap is positioned above the apex of the extension along the posterior midline of the body. When the connecting point is above the apex of the posterior midline, the direction of the shoulder strap along the back naturally forms an outward and upward vector. This vector can be decomposed into: an upward component that more effectively counteracts the weight of the breasts; and an outward component that helps to gently gather the soft tissue of the back towards the side and front, enhancing the lateral coverage. Simultaneously, the higher outer connecting point makes the shoulder strap less likely to slip from the shoulder towards the base of the neck, improving stability.

[0014] In an optional embodiment, the shoulder strap has an adjustment section at the end away from the extension piece, and a second connecting buckle is provided on the front piece. The adjustment section passes through the second connecting buckle and folds back, and is secured by a second Velcro assembly provided on the adjustment section and / or the shoulder strap. The user can not only adjust the shoulder strap length, but also fine-tune the tension and fit angle at the base of the shoulder strap by folding it back, thereby optimizing the shoulder pressure distribution.

[0015] In an optional embodiment, the first and second connecting buckles are either D-rings or H-shaped buckles. The advantage of a D-ring is that the adjusting strap / section, after passing through its two grooves, generates double the friction, resulting in a very secure fixation and smooth sliding adjustment. The advantage of a D-ring is its simple structure and lightweight design; the strap folds back after passing through the annular space, making operation intuitive and convenient. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a structural schematic diagram of the sports bra in an embodiment.

[0017] In the attached diagram: 100: front piece, 200: rear piece, 210: notch, 220: support wing, 300: shoulder strap, 400: extension piece, 410: connecting part, 510: main support strap, 520: rib support strap, 530: flexible hinge part, 600: elastic pull tab, 610: adjustment strap. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figure 1 The following are several embodiments of a lightweight sports bra according to the present invention.

[0023] An embodiment of this utility model provides a lightweight sports bra, including a front panel 100, a back panel 200, and two shoulder straps 300 connecting the front and back, and further including: An extension piece 400 extends upward from the middle of the rear section 200, and the left and right ends of the extension piece 400 extend upward respectively to form a connecting portion 410 that connects to the shoulder strap 300. A support plate assembly is built into the extension plate 400. The support plate assembly includes a main support band 510 extending longitudinally along the back of the human body and at least one rib support band 520 extending laterally from the main support band 510. The connection area between the rib support band 520 and the main support band 510 forms a flexible hinge portion 530. The distal end of the rib support band 520 away from the main support band 510 is fixedly connected to the surface layer and / or inner lining layer of the extension plate 400.

[0024] In this embodiment, the support plate assembly being built into the extension plate means that the support plate assembly can be completely enclosed, such as through a sandwich structure, or fixed to the inner surface of the extension plate by means of local hot pressing, sewing, etc. Its purpose is to integrate with the extension plate into a functional composite, rather than a detachable component. The flexible hinge allows the rib support band to elastically deflect relative to the main support band, and the fixed connection between the distal end of the rib support band and the extension plate can be achieved through connection methods such as high-frequency hot pressing, ultrasonic welding, sewing, etc. This embodiment deconstructs the back support requirement into two sub-problems: longitudinal stability and lateral compliance. The main support band simulates the spine to provide longitudinal rigidity, and the rib support band simulates the ribs to provide lateral expansion capability. The two are dynamically connected through a flexible hinge that simulates the rib-vertebral joint. By embedding the support plate assembly within the flexible carrier of the extension plate, the advantages of biomechanics are transformed into an industrially manufactureable product structure.

[0025] This invention transforms static, large-area back support into a dynamic support system consisting of a centrally rigidly anchored main support belt, laterally elastically linked rib support belts and flexible hinges, and an extension plate with a flexible force transmission interface. It provides basic stability when stationary and can adapt to back expansion through the deformation of the flexible hinges during movement (such as deep breathing and chest expansion), reducing the feeling of constriction and breathing restriction caused by traditional one-piece back panels and resolving the contradiction between support and freedom of movement.

[0026] In an optional embodiment, such as Figure 1As shown, the support sheet assembly is made of a low-elongation elastic material and is wrapped between the surface layer and the inner lining layer of the extension sheet 400. The low-elongation elastic material is a polyurethane film, thermoplastic polyurethane sheet, or elastic mesh fabric. The longitudinal elongation of the support sheet assembly is less than 50% of that of the surface material of the extension sheet. In this embodiment, the low-elongation elastic material refers to an elastic sheet or film material with a longitudinal elongation at break between 30% and 80%, preferably 40% to 60%, under standard test conditions (e.g., referring to GB / T 3923.1 "Textiles - Tensile Properties of Fabrics - Part 1: Determination of Breaking Strength and Elongation at Break"). This material is mainly used to provide structural shape retention and directional support. In contrast, the surface material of the extension sheet in this embodiment is typically a high-elasticity knitted fabric, whose longitudinal elongation at break under the same test conditions is generally greater than 100%, and can even reach over 150%. The fact that the longitudinal elongation of the support plate assembly in this embodiment is less than 50% of the surface material of the extension plate indicates that the tensile stiffness of the support plate assembly material is significantly higher than that of the surface material of the extension plate that wraps it, so as to ensure that the support plate assembly can play a role as the main mechanical skeleton when under stress, and limit the excessive deformation of the extension plate.

[0027] In a preferred embodiment, the support sheet assembly uses a thermoplastic polyurethane (TPU) film with a thickness of 0.3 mm to 0.8 mm. The TPU film has a longitudinal elongation at break of approximately 50%-70% and a Shore A hardness between 75 and 85 degrees. The accompanying extension sheet surface material is a plain weave elastic fabric with a spandex content of approximately 15%-20%, and a longitudinal elongation at break of approximately 120%-160%. Therefore, the elongation of the TPU film is less than half that of the extension sheet surface material, which meets the requirement of a low-elongation elastic material in this invention, effectively providing directional reinforcement and limiting deformation.

[0028] This embodiment utilizes a low-elongation elastic material to provide resistance to excessive deformation, ensuring the support plate assembly functions as a mechanical framework. It effectively resists longitudinal stretching, preventing the overall structure from shifting and deforming during movement, and converting shoulder strap tension into effective lifting force. Simultaneously, to achieve a comfortable fit and avoid direct skin contact with rigid materials, this embodiment uses the outer and inner lining layers of the extension piece to cover the support plate assembly. To prevent the support plate assembly from shifting or curling due to friction within the extension piece, it can be reliably bonded to the inner and outer layers of the extension piece using existing hot-pressing, bonding, and other specific processes.

[0029] In an optional embodiment, such as Figure 1As shown, the flexible hinge portion 530 is formed by an incompletely bonded area between the main support strip 510 and the rib support strip 520, or by a bridging area with higher elongation formed locally during weaving or thermoforming. The incompletely bonded area can be formed by applying thermosetting adhesive in a dot matrix or discontinuous strip pattern, ensuring sufficient bonding force to prevent delamination while leaving sufficient unbonded length for bending. For the weaving scheme, this bridging area uses yarn with a higher spandex content; for the thermoforming scheme, this area uses a thinner TPU film sheet with a lower Shore hardness.

[0030] In this embodiment, the incompletely bonded area utilizes the material's inherent elasticity and bending properties. A movable hinge effect is created by controlling the bonding area at predetermined locations (e.g., applying adhesive in dots or strips). The process is simple and reliable. The bridging area employs localized high-elasticity bridging. Under the premise of integral molding, a transition between rigidity and flexibility is achieved by changing the local material ratio or structure (e.g., using higher-elasticity yarn during weaving, or using films of different moduli during hot pressing). This results in a more complete appearance and potentially better durability. Both methods reliably ensure that the flexible hinge maintains its connection under normal conditions and allows for springback deflection under external force.

[0031] In an optional embodiment, such as Figure 1 As shown, the rear section 200 has a notch 210 in the middle, the notch 210 is located directly below the extension piece 400, and the notch 210 is semi-elliptical or semi-circular.

[0032] In this embodiment, a notch is provided in the area on the back where sweat accumulates most (corresponding to the area between and below the shoulder blades). This notch serves as a direct ventilation channel, significantly accelerating sweat evaporation and alleviating the feeling of stuffiness. At the same time, when the body bends forward or takes a deep breath, the skin and soft tissue of the back stretch, and the notch provides space to accommodate this stretching, avoiding the restriction of back movements and the accumulation and wrinkling of fabric after the full movement.

[0033] In an optional embodiment, the outer edge of the notch 210 is provided with a support wing 220, the inner edge of which matches the arcuate contour of the notch 210. The support wing acts as a reinforcement for the notch, reinforcing the edge of the notch to prevent the area from losing its shape, collapsing, or curling after repeated stretching and soaking in sweat, ensuring that the notch maintains its design shape and function over a long period.

[0034] In an optional embodiment, such as Figure 1As shown, the support wing 220 is composed of reinforcing webbing integrally formed with the back wing 200, and its width gradually narrows from the middle to both ends. Integral forming refers to directly weaving a strip structure with different properties in the area where the support wing needs to be formed by increasing yarn density locally, using higher-strength yarns, or employing double-layer weaving, during the weaving of the back wing fabric. The support wing is not an accessory sewn on later. This embodiment eliminates the friction discomfort that may be caused by splicing seams, improving overall aesthetics and reliability. The gradual narrowing of the support wing's width from the middle to both ends ensures that the middle of the upper edge of the notch bears the main downward pull from the upper extension piece; as it extends towards both ends, the force gradually decreases, and the width narrows accordingly, achieving a reasonable distribution of material and a smooth transition of pressure, avoiding abrupt cutoff points at both ends of the support wing, further improving wearing comfort.

[0035] In an optional embodiment, such as Figure 1 As shown, the bottom edges of the front panel 100 and the rear panel 200 are jointly provided with an elastic underband 600. The elastic underband 600 is disconnected at the position corresponding to the notch 210. One end of the elastic underband 600 is provided with a first connecting buckle, and the other end extends to form an adjustment strap 610. The adjustment strap 610 passes through the first connecting buckle and folds back in the opposite direction, and is fixed by a first Velcro assembly provided on the adjustment strap 610 and / or the elastic underband 600. In this embodiment, the disconnection means that both ends of the elastic underband terminate at the edge of the notch, and continuous adjustment is achieved by adjusting the strap and the Velcro assembly. Users can fine-tune the fit according to their daily body feel, breathing depth, or different exercise needs.

[0036] In an optional embodiment, such as Figure 1 As shown, the connecting portion 410 on the extension piece 400 for connecting the shoulder strap 300 is positioned higher than the apex of the extension piece 400 at the posterior midline of the body. This embodiment achieves effective lifting and prevents slippage. When the connecting point is higher than the apex of the posterior midline, the direction of the shoulder strap on the back naturally forms an outward and upward vector. This vector can be decomposed into: an upward component force, which more effectively counteracts the weight of the breasts; and an outward component force, which helps to gently gather the soft tissue of the back towards the side and front, enhancing the side coverage. At the same time, the higher outer connecting point makes the shoulder strap less likely to slip from the shoulder towards the base of the neck, improving stability.

[0037] In an optional embodiment, such as Figure 1As shown, the shoulder strap 300 has an adjustment section at the end away from the extension piece 400, and the front piece 100 has a second connecting buckle. The adjustment section passes through the second connecting buckle and folds back, and is secured by a second Velcro assembly provided on the adjustment section and / or the shoulder strap. Users can not only adjust the shoulder strap length, but also fine-tune the tension and fit angle at the base of the shoulder strap by folding it back and fastening it, thereby optimizing the shoulder pressure distribution. The cooperation with the front piece connecting buckle also makes the adjustment operation extremely convenient and intuitive.

[0038] In an optional embodiment, the first and second connecting buckles are either D-rings or H-shaped buckles. The advantage of D-rings is that the adjusting strap / section, after passing through its two grooves, generates double the friction, resulting in a very secure fixation and smooth sliding adjustment. The advantages of D-rings are their simple structure, lightweight design, and intuitive and convenient operation, as the strap folds back after passing through the annular space. Both are mature, low-cost, and highly reliable standard components in the textile and apparel industry, ensuring convenience and economy in production and maintenance.

[0039] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A lightweight sports bra, comprising a front panel (100), a back panel (200), and two shoulder straps (300) connecting the front and back, characterized in that, Also includes: An extension piece (400) extends upward from the middle of the rear section (200), and the left and right ends of the extension piece (400) extend upward respectively to form a connecting part (410) that connects to the shoulder strap (300). A support plate assembly is built into the extension plate (400). The support plate assembly includes a main support band (510) extending longitudinally along the back of the human body and at least one rib support band (520) extending laterally from the main support band (510). The connection area between the rib support band (520) and the main support band (510) forms a flexible hinge (530). The distal end of the rib support band (520) away from the main support band (510) is fixedly connected to the surface and / or inner lining of the extension plate (400).

2. The lightweight sports bra according to claim 1, characterized in that: The support plate assembly is made of a low elongation elastic material and is covered between the surface layer and the inner lining layer of the extension plate (400). The low elongation elastic material is a polyurethane film, thermoplastic polyurethane sheet or elastic mesh. The longitudinal elongation of the support plate assembly is less than 50% of the surface material of the extension plate (400).

3. A lightweight sports bra according to claim 2, characterized in that: The flexible hinge (530) is formed by the incompletely fitted area between the main support strip (510) and the rib support strip (520) or by a bridging area with higher elongation formed locally during the weaving or hot pressing process.

4. A lightweight sports bra according to claim 1, characterized in that: The rear section (200) has a notch (210) in the middle, the notch (210) is located directly below the extension piece (400), and the notch (210) is semi-elliptical or semi-circular.

5. A lightweight sports bra according to claim 4, characterized in that: The outer edge of the notch (210) is provided with a support wing (220), and the inner edge of the support wing (220) matches the arcuate contour of the notch (210).

6. A lightweight sports bra according to claim 5, characterized in that: The support wing (220) is made of a reinforcing webbing integrally formed with the rear wing (200), and its width gradually narrows from the middle to both ends.

7. A lightweight sports bra according to claim 4, characterized in that: The bottom edges of the front piece (100) and the rear piece (200) are provided with a common elastic pull tab (600). The elastic pull tab (600) is disconnected at the position corresponding to the notch (210). One end of the elastic pull tab (600) is provided with a first connecting buckle, and the other end extends to form an adjustment strap (610). The adjustment strap (610) passes through the first connecting buckle and folds back in the opposite direction, and is fixed by a first Velcro assembly provided on the adjustment strap (610) and / or the elastic pull tab (600).

8. A lightweight sports bra according to claim 1, characterized in that: The connecting portion (410) on the extension piece (400) for connecting the shoulder strap (300) is positioned above the apex of the extension piece (400) at the posterior midline of the human body.

9. A lightweight sports bra according to claim 7, characterized in that: The shoulder strap (300) has an adjustment section at one end away from the extension piece (400), and the front piece has a second connecting buckle. The adjustment section passes through the second connecting buckle and folds back in the opposite direction, and is fixed by a second Velcro assembly provided on the adjustment section and / or the shoulder strap (300).

10. A lightweight sports bra according to claim 9, characterized in that: The first and second connecting buckles are either D-rings or swivels.

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