WO2015106620A1 - 一种运动文胸 - Google Patents

一种运动文胸 Download PDF

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Publication number
WO2015106620A1
WO2015106620A1 PCT/CN2014/094835 CN2014094835W WO2015106620A1 WO 2015106620 A1 WO2015106620 A1 WO 2015106620A1 CN 2014094835 W CN2014094835 W CN 2014094835W WO 2015106620 A1 WO2015106620 A1 WO 2015106620A1
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modulus
young
cup
movement
initial length
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PCT/CN2014/094835
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English (en)
French (fr)
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李翼
胡军岩
林晓芬
林颖蕾
郭月萍
周金云
曹旭勇
孙舒
吕如
韩艳霞
叶青
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香港纺织及成衣研发中心有限公司
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Publication of WO2015106620A1 publication Critical patent/WO2015106620A1/zh

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    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41C—CORSETS; BRASSIERES
    • A41C3/00—Brassieres
    • A41C3/005—Brassieres specially adapted for specific purposes
    • A41C3/0057—Brassieres specially adapted for specific purposes for sport activities
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
    • A41B2400/00—Functions or special features of shirts, underwear, baby linen or handkerchiefs not provided for in other groups of this subclass
    • A41B2400/60—Moisture handling or wicking function

Definitions

  • the invention relates to the technical field of textiles, in particular to a sports bra which is directly combined with human skin and is composed of special functional fabrics for improving the comfort and health of use and a preparation method thereof.
  • Women's breasts are mainly composed of fat and glands.
  • the superficial fascia of the chest wraps the entire breast, and Cooper’s ligaments and skin support the breast and adipose tissue.
  • the size and weight of an adult woman's breasts vary from person to person. Small and medium breasts weigh less than or equal to 500 grams, and large breasts can reach 750 to 1000 grams.
  • Female breasts may sag due to factors such as aging and gravity.
  • the bra is the underwear used by women to cover and protect the breast.
  • the size of the Chinese chest in real life is expressed by the bra type: the number refers to the size of the lower bust; the type refers to the size of the cup.
  • Bras are generally divided into the following sections: cups, straps, shoulder straps and adjustment buckles.
  • the breast will shake and shake. If the bra is not worn, the chest will involuntarily swing greatly, causing permanent damage to the elastic fiber tissue in the breast, resulting in sagging of the chest.
  • Sports bra is a special type of underwear that can prevent female breasts from being hurt during exercise.
  • the current types of sports bras developed to reduce the damage to the chest during exercise can be divided into simple fixed type, pressure fixed type and composite type.
  • the simple fixed type is fixed by a layer of elastic mesh fabric, and the structure is simple, and there is basically no design for the human body structure, and the fixing property is poor.
  • the composite structure is the most fixed, and it usually contains special steel support to obtain better support and make the fabric stronger.
  • the pressure type is the most widely used type. It mainly relies on the elasticity of the fabric to form the pressure on the chest to achieve the purpose of fixing the breast.
  • the ergonomics is usually considered in the cutting, so that good fixation is obtained. Maintain relative comfort.
  • the padded pressure bra is the mainstream and is loved by women.
  • This type of pressure sports bra provides the greatest possible pressure on the woman, so that the chest is as close as possible to the main body of the woman, in order to minimize the shaking of the chest during the movement of the woman.
  • the pressure bra compresses the chest for a long time, which not only causes the user's discomfort and pain, but also oppresses the blood circulation system and the lymphatic circulation system in the breast, causing obstacles in the blood circulation system and the lymphatic system. It may be used for a long time.
  • this type of bra is usually used to increase the pressure effect, and the use of multi-layer fabrics reduces the moisture wicking performance of the bra. Therefore, after sweating, the sweat cannot be discharged in time, and the body surface heat cannot be dissipated in time. Accelerate the user's body temperature rise, affecting the user's exercise performance; at the same time, the discharge of sweat is accumulated in the chest pad portion, the weight of the chest pad is greatly increased, but will increase the possibility of the chest shaking during exercise. Therefore, there is an urgent need for a movement that has moderate pressure, can quickly wick sweat, and maintain chest support. Bra.
  • US201013202217, US201113294899 and US201113072071 are all pressure-fixed sports bras, among which US201113072071 uses an elastic material to enhance the lifting effect on the chest, thereby reducing the discomfort during exercise.
  • US201113294899 constitutes a supporting structure with a covering and separating action by a double-layer compression fabric of m-type and w-type. The structure plus the elasticity of the fabric provides a three-dimensional coating, suspension and pressure on the chest, which is then applied to the movement to prevent breast damage.
  • US201113072071 utilizes an elastic material to invent a sports bra design method that can adjust its compression and coat the breast during exercise.
  • the sports bra described in the above-mentioned plurality of published patents for reducing breast damage during female exercise is mainly realized by utilizing fabric elasticity, fabric structure and special part design of the bra.
  • the above-mentioned sports bra can not achieve breast displacement and stress control under different motion states, and can not effectively transmit and evaporate chest sweat during exercise. No bras with the above functions were found by literature search.
  • the technical problem to be solved by the present invention is to provide a sports bra for the above-mentioned drawbacks of the prior art.
  • a sports bra comprising two cups for accommodating a breast, two shoulder straps respectively connected to the upper portions of the two cups and fixed to the human body, An annular bottom wall connected to a bottom edge of the two cups, a core connected between the two cups, a soil table connected to a lower edge of the cup and a lower edge of the chicken core, connected to the a bottom side of the cup and a side ratio for stacking the breast, and an appendage connected between the chicken heart and the two cups and filling the gap between the shoulder straps; characterized in that the shoulder strap, the cup, The bottom circumference, the chicken heart, the soil platform, the side ratio, and the appendage are respectively made of seven fabrics which have the functions of dynamic adsorption and transfer of sweat, and the liquid water dynamic transmission comprehensive indexes of the seven fabrics are all greater than or equal to 3. And the seven fabrics have predetermined different Young's moduli respectively under different deformation amounts.
  • the cup is used.
  • the fabric has a corresponding low-movement Young's modulus of the cup in the low-motion state, and has a corresponding Young's modulus of the amount of movement in the cup in the state of the amount of movement, and a corresponding amount of high-capacity of the cup in the state of high-movement
  • the Young's modulus, the low-movement Young's modulus of the cup, the Young's modulus of the movement in the cup, and the Young's modulus of the cup's high-movement are different, and both increase with the increase of the size of the cup;
  • the shoulder strap has an initial length of the shoulder strap, and the fabric used in the shoulder strap has a low-movement Young's modulus corresponding to the cup during the deformation of the initial length of the shoulder strap of 40% or less.
  • the cup has an initial length of the cup, and the fabric used for the cup has a low-movement Young's modulus of the cup during a deformation process with a tensile length of 1 cm or less; and a tensile length of 1-2.5 cm.
  • the deformation process has a Young's modulus of the amount of movement in the cup; and the deformation of the cup has a high-movement Young's modulus during a deformation process of 2.5 cm or more.
  • the bottom circumference has an initial length of the bottom circumference
  • the fabric used in the bottom circumference has a low movement amount corresponding to the cup during the deformation of the initial length of the bottom circumference of 25% or less.
  • Double bottom height high mobility Young's modulus Double bottom height high mobility Young's modulus.
  • the heart of the chicken has an initial length of the heart, and the fabric used in the heart has a low-movement Young's modulus corresponding to the cup during the modification of the initial length of the heart of 20% or less. -4 times the low-movement Young's modulus of the heart; in the variation of the initial length of the heart with a stretch of more than 20%, there is a high-activity Yang of the heart equivalent to 3-5 times the Young's modulus of the cup. Modulus.
  • the soil platform has an initial length of the soil platform
  • the fabric used in the soil platform has a low-movement Young's modulus corresponding to the cup in the deformation process of the initial length of the soil table having a tensile amount of 20% or less. -2 times the low-movement Young's modulus of the soil platform; in the deformation process of the initial length of the soil table with the tensile amount greater than 20%, the soil has a high-activity Yang of 1.5-2.5 times the Young's modulus of the cup. Modulus.
  • the side ratio has a side ratio of an initial length, and the side ratio has a lower movement amount of the cup corresponding to the cup during a modification in which the side of the stretch amount is 20% or less than the initial length.
  • the side of the modulus is 1-2 times higher than the low-movement Young's modulus; in the variation of the side with the stretch amount greater than 20% than the initial length, there is a 1.5-2.5 equivalent to the high-movement Young's modulus of the cup.
  • Double Side ratio is higher than the Young's modulus.
  • the appendage has an initial length of the appendage, and the fabric used in the appendage has a low-movement amount of the cup corresponding to the cup during the modification of the initial length of the appendage of 20% or less. 1-2 times the modulus of the low-movement Young's modulus; in the variation of the initial length of the appendage with a stretch of more than 20%, there is a 1.5-2.5 equivalent of the high-movability Young's modulus of the cup. Double the high mobility Young's modulus of the appendage.
  • a sports bra is different from the design of the traditional bra by increasing the pressure or modulus to reduce the displacement of the breast during exercise; instead, while maintaining comfort and reducing sports injuries as much as possible,
  • the breast displacement and the momentum amount automatically adjust the Young's modulus of the bra material, which can automatically adjust the transfer characteristics of sweat and sweat from the skin surface to the outer surface of the bra, so that under various sports conditions, Wears health and comfort, prevents or reduces the damage caused by high-intensity exercise to the breast, and improves the heat transfer efficiency of the chest skin surface by effectively improving the transmission and evaporation efficiency of chest sweat in the bra, delaying the rate of rise of the body's core body temperature, suitable for Women wear when they are exercising.
  • Figure 1 is a schematic view showing the structure of a first embodiment of a preferred embodiment of the sports bra of the present invention
  • FIG. 2 is a schematic view showing the structure of a second embodiment of a preferred embodiment of the sports bra of the present invention.
  • a brand new sports bra is proposed, and the core idea of the invention is: from the physiological and psychological needs of the human body, it is not absolutely pursued to increase the pressure or Young's modulus by an infinite amount.
  • the method is to reduce the displacement of the breast during exercise, but to allow the movement of the breast in a certain range under the premise of safety and comfort; to reduce the pressure on the breast caused by the designed bra.
  • the Young's modulus of the bra material is automatically adjusted accordingly, and the characteristics of sweat and sweat are automatically adjusted from the skin surface to the outer surface of the bra, thereby achieving different movement states.
  • It can be worn health and comfort, prevent or reduce the damage caused by high-intensity exercise to the breast, and improve the heat transfer efficiency of the chest skin surface by effectively improving the transmission and evaporation efficiency of chest sweat in the bra, and delay the rising rate of the body core body temperature.
  • the sports bra features (pictured in Figures 1 and 2) is a sports bra with a shoulder strap, no coaster, no steel ring and a specific functional partition design. It consists of the following specific functional areas: shoulder strap 1, cup 2, bottom circumference 3, chicken heart 4, soil platform 5, side ratio 6, auxiliary part 7.
  • Another technical problem in this patent is how to design a fabric that has dynamic adsorption and transfer functions of liquid water (sweat) under different deformation conditions.
  • a design principle and a manufacturing method of a porous material having a dynamic adsorption and transfer function (Application No. 201210378024.1).
  • the measurement method of the liquid water dynamic transmission comprehensive index refer to the national standard GB21655.2-2009, the evaluation of the wet and dry speed of textiles, part 2, the dynamic moisture transfer method.
  • the seven fabrics in the text are based on "a design principle and production method of a porous material with dynamic adsorption and transfer functions" (application number) Made in 201210378024.1).
  • the design method also designs the size of the bra cup as a variable, and the shape of the cup is from A to G.
  • the Young's modulus of the designed sports bra material was designed according to the variables: exercise intensity and cup size.
  • the basic reference selection table shown in Table 1 is designed for the Young's modulus of the fabric with different exercise intensity and the required cup size.
  • the data in the table is a preferred parameter, which may range from a preferred parameter up and down by 15%.
  • the values of the low-motion Young's modulus, the medium-movement Young's modulus, and the high-movement Young's modulus are different, and both increase with the increase of the cup size.
  • a sports bra including two cups 2 for accommodating the breast, respectively connected to the upper part of the two cups 2, two shoulder straps 1 for fixing on the human body, connected to the two An annular bottom 3 of the bottom edge of the cup 2, a core 4 connected between the two cups 2, a soil table 5 connected to the lower edge of the cup 2 and the lower edge of the core 4, and a bottom side connected to the cup 2, a side ratio 6 for stacking the breast, and an appendage 7 connected between the chicken core 4 and the two cups 2 and filling the shoulder strap 1; characterized in that the shoulder strap 1, the cup 2, the bottom 3,
  • the heart 4, the soil table 5, the side ratio 6, and the appendage 7 are respectively made of seven fabrics which have the functions of dynamic adsorption and transfer of sweat, and the liquid water dynamic transmission comprehensive indexes of the seven fabrics are all greater than or equal to 3, and
  • the seven fabrics have predetermined different Young's moduli at different variations.
  • the shoulder strap 1 has an initial length of the shoulder strap, and the fabric used for the shoulder strap 1 has a 1-2 times the Young's modulus of the low movement amount of the cup in the variation of the initial length of the shoulder strap of 40% or less.
  • the low-movement Young's modulus of the shoulder strap is preferably 1.5 times in the present embodiment; and 1.5-2.5 times the Young's modulus of the high-movement amount of the cup in the variation of the initial length of the shoulder strap having a stretch of more than 40%.
  • the high mobility Young's modulus of the shoulder strap is preferably 2 times in this embodiment.
  • the cup 2 has an initial length of the cup, and the fabric used for the cup 2 has a low-movement Young's modulus of the cup during the deformation of the stretch length of 1 cm or less; and a cup during the deformation between the stretch length of 1-2.5 cm
  • the bottom 3 has an initial length of the bottom circumference, and the fabric used for the bottom 3 has a 1-2 times the Young's modulus of the low movement amount of the cup in the variation of the initial length of the bottom of the stretch of 25% or less.
  • the low-movement Young's modulus of the bottom circumference is preferably 1.5 times in the present embodiment; and the deformation of the initial length of the bottom circumference of the stretch amount of more than 25% has 1.5-2.5 times the Young's modulus of the high-moving cup of the cup.
  • the high dynamic amount Young's modulus of the bottom circumference is preferably 2 times in the present embodiment.
  • the heart 4 has the initial length of the heart, and the fabric used in the heart 4 has a 2-4 times the Young's modulus of the low-movement of the cup in the variation of the initial length of the heart with a stretch of 20% or less.
  • the low-moving Young's modulus of the heart of the chicken is preferably 3 times in the present embodiment; in the variation of the initial length of the heart of the stretched amount of more than 20%, the heart has a heart equivalent to 3-5 times the Young's modulus of the cup.
  • the high mobility Young's modulus is preferably 4 times in the present embodiment.
  • the soil platform 5 has the initial length of the soil platform, and the fabric used in the soil platform 5 has a low soil movement amount equivalent to 1-2 times the Young's modulus of the low movement amount of the cup in the deformation process of the initial length of the soil table with the stretching amount of 20% or less.
  • the Young's modulus is preferably 1.5 times in the present embodiment; in the modification process of the initial length of the soil table having a tensile amount of more than 20%, the soil has a height of 1.5-2.5 times the Young's modulus of the cup.
  • the modulus is preferably 2 times in the present embodiment.
  • the side ratio 6 has a side ratio to the initial length, and the side ratio of the fabric used in the side is 1-2 times the Young's modulus of the low movement amount of the cup in the variation of the side of the stretch amount of 20% or less than the initial length.
  • the side ratio is lower than the low-movement Young's modulus, which is preferably 1.5 times in the present embodiment; and the side having a stretch amount of more than 20% is 1.5 to 2.5 times the Young's modulus of the high-moving amount of the cup compared to the initial length.
  • the side ratio is higher than the high amount of Young's modulus, and is preferably 2 times in the present embodiment.
  • the appendage 7 has an initial length of the appendage, and the fabric used in the appendage 7 has a 1-2 times the Young's modulus of the low-motion amount of the cup in the modification of the initial length of the appendage of 20% or less.
  • the low-motion Young's modulus of the appendage is preferably 1.5 times in the present embodiment; and in the modification of the initial length of the appendage having a stretch of more than 20%, it has 1.5-2.5 times the Young's modulus of the cup with a high amount of movement.
  • the high-movement Young's modulus of the appendage is preferably twice as large in the present embodiment.
  • the finite element structure model of the present invention for the sports bra and the female chest is implemented on a computer with a CPU frequency of 2.83 GHz, dual core, and a memory of 3.25 G.
  • the computer uses the Windows XP operating system and the version of the ABAQUS system is 6.10-2.
  • one Adult women with a chest circumference and breast size of 75B were constructed. According to the reference Gefen, A. and B. Dilmoney (2007). "Mechanics of the normal woman's breast. "Technology and Health Care 15(4): 259-271.” and “Chen, LH, SPNg, et Al. (2013).
  • the simulation results show that the maximum vertical stress that the breast receives at this time is located inside the breast, and the value is 5.681 kPa.
  • the vertical displacement of the female chest during exercise is calculated, and the maximum vertical displacement of the female chest wearing the bra at low exercise is 1.64 cm. At this time, the maximum vertical stress of the breast is located in the middle of the chest, the value is 0.3449. kPa.
  • the vertical displacement gives a maximum vertical displacement of 3.74 cm in the case of a female breast wearing a bra at a high amount of exercise, and the maximum vertical stress that the breast receives is located on the lower side of the breast, with a value of 2.593 kPa.
  • the knitting materials with different Young's modulus under different deformation conditions were prepared by the inventor's prior invention technology, which was used in the sports bra of this design.
  • the following table shows the actual wear test results showing that in a controlled environmental meteorological room, when the subject (75B) wears the designed sports bra to perform low-volume exercise on the treadmill at a speed of 5 km/h, the average maximum displacement of the breast It is 0.5 cm; high-volume exercise is performed on a treadmill at a speed of 8 km/h, and the average maximum displacement of the breast is 1.1 cm.
  • the subject wears the invented bra and the commercial market that does not have the dynamic adsorption and transfer function of liquid water (sweat), and has only the same Young's modulus under different variants.
  • a sports bra that performs a series of sports contrast tests at specified times, including average body temperature changes, body core temperature changes, microenvironmental temperature changes between the chest and bra, sweat concentration after exercise on the left bra cup, comfort Degree, degree of ventilation, specific test comparison results were statistically analyzed (repetitive measurement variance) as follows:
  • the performance of the sports bra of the present invention has a significant advantage, and mainly relies on the elasticity of the fabric to form a pressure on the chest to achieve the purpose of fixing the breast, and the ergonomics is fully considered in the cutting, so that good fixation is obtained at the same time.
  • Maintain relative comfort automatically adjust the Young's modulus of the bra material according to the breast displacement and momentum caused by different exercise intensity, and automatically adjust the transfer characteristics of sweat and sweat from the skin surface to the outer surface of the bra. It can wear health and comfort under various sports conditions, prevent or reduce the damage caused by high-intensity exercise to the breast, and improve the heat transfer efficiency of the chest skin surface by effectively improving the transmission and evaporation efficiency of chest sweat in the bra, delaying the core of the human body.
  • the rate of rise in body temperature is suitable for women to wear when exercising.

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Abstract

一种运动文胸，包括两个罩杯（2）、肩带（1）、底围（3）、鸡心（4）、土台（5）、侧比（6）和附属部（7）。罩杯（2）、肩带（1）、底围（3）、鸡心（4）、土台（5）、侧比（6）和附属部（7）分别采用七种对汗液具有动态吸附及转移功能的面料制成，其液态水动态传递综合指数均大于或等于3，且该七种面料在不同的变型量下分别具有不同的杨氏模量。该运动文胸有别于传统文胸通过压力或模量来降低乳房在运动中的位移量；其是在尽量保持舒适与减少运动损伤的前提下，可以根据不同的运动强度所造成的乳房位移相应地自动调节文胸材料的杨氏模量，防止或减少高强度运动对乳房造成的损伤，并通过有效提高汗液在文胸中的传递与蒸发效率以达到提高胸部皮肤表面热散失效率，延缓人体核心体温的上升速率。

Description

一种运动文胸 技术领域
本发明涉及纺织技术领域，尤其涉及一种直接与人体皮肤相接触的，由特殊功能面料组合而成，用于改善使用舒适性与健康的运动文胸及其制备方法。
背景技术
女性的乳房主要是由脂肪和腺体构成。胸部的浅筋膜(superficial fascia)包裹整个乳房，库柏氏悬韧带(Cooper’s ligaments)和皮肤对乳腺组织和脂肪组织起支撑作用。成年女性乳房的大小和重量因人而异。中小型的乳房重量小于或等于500克，大型的乳房能达到750到1000克。由于老化和重力等的因素，女性乳房有可能会下垂。
文胸是女性用于遮蔽和保护乳房的内衣，在现实生活中文胸的尺码是以文胸号型来表达：号是指下胸围的大小；型是指罩杯的大小。不同国家以及不同生产厂商的间，对文胸的号型标注存在着巨大的差别。但规律是号越大，下胸围尺寸越大；型越高，胸围与下胸围的间的差距越大。
文胸一般分为以下几个部分：罩杯、背带、肩带和调节扣环等。在进行运动健身的过程中，乳房会震动摇晃，如果没有穿文胸，胸部会不由自主地大幅度摆动，使得乳房内的弹性纤维组织受到永久性伤害，从而导致胸部下垂。
运动文胸，是一类能避免女性乳房在运动健身过程中受到伤害的特定功能内衣。目前为减少胸部在运动过程受到伤害而开发的运动文胸大致类型可分为：简易固定型、压力式固定型及复合结构型。其中简易固定式，采用一层具有弹性的网状织物固定，结构简易，基本不存在针对人体结构而作出的设计，其固定性较差。复合结构式则是固定性最强，其一般都含有特殊钢托，以获得更好承托支撑，使得织物强度更大。压力式固定型是应用最为广泛的类型，其主要依靠织物的弹性而形成对胸部的压力进而达到固定乳房的目的，其在剪裁上通常会充分考虑人体工程学，从而在得到良好固定性的同时保持相对的舒适性。
目前，在市面上销售的运动文胸中，带垫的压力文胸是主流，受到女性的喜爱。这种类型的压力运动文胸为女性提供尽可能大的压力，使得胸部尽可能的贴近女性的主躯干部位，以达到尽可能减少胸部在女性运动过程中的上下晃动的目的。但是，随着科技的不断发展，人们发现，不单过度的上下晃动有可能破坏乳腺组织，在运动过程中长时间过度压迫胸部同样会破坏乳腺组织。压力文胸长时间的挤压胸部，不但造成使用者的不舒适感和疼痛感，还会压迫乳腺中的血液循环系统和淋巴循环系统，造成血液循环系统和淋巴系统出现障碍，长时间使用有可能会使乳腺产生病变，例如造成胸部组织坏死，进而有可能发展成乳腺癌。另外，该类型的文胸通常为了增加压力效果，而使用多层的布料，降低了文胸的吸湿排汗性能，于是使用者在出汗后，汗液不能及时排出，体表热量不能及时散发，有可能加速使用者的体温上升，影响使用者的运动成绩；同时，排出汗液大量积聚在胸垫部分，胸垫部分重量大大增加，反而会增大胸部在运动过程中晃动的可能性。因此，人们急需一种既有适度的压力，能迅速排汗，同时能保持胸部支撑作用的运动 文胸。
在专利检索中发现，目前国内外已发明的运动文胸专利亦旨在减少女性运动过程中乳房伤害的运动文胸，多集中为压力固定式运动文胸，其中中国专利No.200720173339.7及No.201320100507.5就是利用不同织物结构弹性对胸部的压力，发明了两款不同类型的无钢圈运动文胸。前者在实现运动时对胸部强支撑作用的同时可达到有效地侧推和抬高胸部的塑胸效果；后者在女性运动时能够减轻防止胸部下垂，松懈，达到运动塑身衣和文胸的融合。在美国专利USP7192333中则通过在胸罩部分倒“V”型设计及松紧带的配合，发明了一种利于运动过程中呼吸调节的文胸。在欧洲专利检索结果中显示US201013202217、US201113294899及US201113072071等均为压力固定式运动文胸，其中US201113072071利用一种弹性材料增强对胸部的提升作用，进而降低运动过程中的不舒适感。US201113294899则通过m型和w型的双层压缩织物构成一个具有包覆及分开作用的承托结构。该结构加上织物的弹性给胸部提供了一个三维包覆、悬空和压力作用，进而将其运用到运动过程中，起到预防乳房损伤的作用。US201113072071利用一种弹性材料，发明了一种具有在运动过程中可调整其压缩及包覆乳房作用的运动文胸设计方法。
上述多件公开专利所述的降低女性运动过程中乳房损伤的运动文胸，主要通过利用织物弹性、织物结构及胸罩特殊部位设计来实现。上述运动文胸在不同运动状态下无法实现乳房位移和应力可控，并且在运动过程中无法实现有效传递和蒸发胸部汗液的功能。通过文献检索，均未发现具有上述功能的文胸。
发明内容
本发明要解决的技术问题在于，针对现有技术的上述缺陷，提供一种运动文胸。
本发明解决其技术问题所采用的技术方案是：一种运动文胸，包括用于容纳乳房的两个罩杯、分别连接在所述两个罩杯上部且用于固定在人体上的两根肩带、连接于所述两个罩杯的底部边缘的环状底围、连接于所述两个罩杯之间的鸡心、与所述罩杯的下边缘和所述鸡心的下边缘连接的土台、连接于所述罩杯的底部侧面且用于堆塑乳房的侧比、以及连接在所述鸡心和两个罩杯之间和填补所述肩带之间空缺的附属部；其特征在于，所述肩带、罩杯、底围、鸡心、土台、侧比、附属部分别是采用七种对汗液具有动态吸附及转移的功能的面料制成，而所述七种面料的液态水动态传递综合指数均大于或等于3，且所述七种面料在不同的变型量下分别具有预定的不同杨氏模量。
优选地，当定义人体在新陈代谢率≤2.5METs时处于低运动量状态、2.5METs＜新陈代谢率≤8.0METs时处于中运动量状态、新陈代谢率＞8.0METs时处于高运动量状态时，所述罩杯所采用的面料在所述低运动量状态下具有相应的罩杯低运动量杨氏模量，在所述中运动量状态下具有相应的罩杯中运动量杨氏模量，在所述高运动量状态下具有相应的罩杯高运动量杨氏模量，所述罩杯低运动量杨氏模量、罩杯中运动量杨氏模量、罩杯高运动量杨氏模量的数值各不相同，均随着罩杯尺寸的增大而呈增大趋势；所述肩带具有肩带初始长度，且所述肩带所采用的面料在拉伸量小于等于40％的肩带初始长度的变型过程中均具有相当于所述罩杯低运动量杨氏模量的1-2倍的肩带低运动量杨氏模量；在拉伸量大于40％的肩带初始长度的变型过程中均具有相当于所述罩杯高运动量杨氏模量的1.5-2.5倍的肩带高运动量杨氏模量。
优选地，所述罩杯具有罩杯初始长度，所述罩杯所采用的面料在拉伸长度小于等于1cm的变型过程中具有所述罩杯低运动量杨氏模量；在拉伸长度为1-2.5cm之间的变型过程中具有所述罩杯中运动量杨氏模量；在拉伸长度大于等于2.5cm的变型过程中具有所述罩杯高运动量杨氏模量。
优选地，所述底围具有底围初始长度，所述底围所采用的面料，在拉伸量小于等于25％的底围初始长度的变型过程中均具有相当于所述罩杯低运动量杨氏模量的1-2倍的底围低运动量杨氏模量；在拉伸量大于25％的底围初始长度的变型过程中均具有相当于所述罩杯高运动量杨氏模量的1.5-2.5倍的底围高运动量杨氏模量。
优选地，所述鸡心具有鸡心初始长度，所述鸡心所采用的面料，在拉伸量小于等于20％的鸡心初始长度的变型过程中均具有相当于所述罩杯低运动量杨氏模量的2-4倍的鸡心低运动量杨氏模量；在拉伸量大于20％的鸡心初始长度的变型过程中均具有相当于所述罩杯高运动量杨氏模量的3-5倍的鸡心高运动量杨氏模量。
优选地，所述土台具有土台初始长度，所述土台所采用的面料，在拉伸量小于等于20％的土台初始长度的变型过程中均具有相当于所述罩杯低运动量杨氏模量的1-2倍的土台低运动量杨氏模量；在拉伸量大于20％的土台初始长度的变型过程中均具有相当于所述罩杯高运动量杨氏模量的1.5-2.5倍的土台高运动量杨氏模量。
优选地，所述侧比具有侧比初始长度，所述侧比所采用的面料，在拉伸量小于等于20％的侧比初始长度的变型过程中均具有相当于所述罩杯低运动量杨氏模量的1-2倍的侧比低运动量杨氏模量；在拉伸量大于20％的侧比初始长度的变型过程中均具有相当于所述罩杯高运动量杨氏模量的1.5-2.5倍的 侧比高运动量杨氏模量。
优选地，所述附属部具有附属部初始长度，所述附属部所采用的面料，在拉伸量小于等于20％的附属部初始长度的变型过程中均具有相当于所述罩杯低运动量杨氏模量的1-2倍的附属部低运动量杨氏模量；在拉伸量大于20％的附属部初始长度的变型过程中均具有相当于所述罩杯高运动量杨氏模量的1.5-2.5倍的附属部高运动量杨氏模量。
实施本发明的有益效果是：一种运动文胸有别于传统文胸的设计通过提高压力或模量来降低乳房在运动中的位移量；而是在尽量保持舒适与减少运动损伤的前提下，可以根据不同的运动强度所造成的乳房位移及动量大小相应地自动调节文胸材料的杨氏模量，可以自动调节汗汽与汗液由皮肤表面向文胸外表面传递特性，从而在各种运动状态下可以穿戴健康舒适，防止或减少高强度运动对乳房造成的损伤，并通过有效提高胸部汗液在文胸中的传递与蒸发效率以达到提高胸部皮肤表面热散失效率，延缓人体核心体温的上升速率，适于女性运动时穿着。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1是本发明运动文胸的优选实施例的一第一视角的结构示意图；
图2是本发明运动文胸的优选实施例的一第二视角的结构示意图。
具体实施方式
在本发明专利中提出了一种全新的运动文胸，其发明的核心思想是：从人体生理与心理需求出发，并非绝对追求通过无限量地增加压力或杨氏模量 的方法来减少运动中的乳房的位移，而是在安全与舒适的前提下，允许运动中的乳房在一定范围内的运动；以减少所设计的文胸对乳房所造成的压力。根据不同的运动强度所造成的乳房位移及动量大小，相应地自动调节文胸材料的杨氏模量及自动调节汗汽与汗液由皮肤表面，向文胸外表面传递特性，从而实现在不同运动状态下可以健康舒适穿戴，防止或减少高强度运动对乳房造成的损伤，并通过有效提高胸部汗液在文胸中的传递与蒸发效率以达到提高胸部皮肤表面热散失效率，延缓人体核心体温的上升速率。
这款运动文胸其特征(如图1、2所示)是一款有肩带无杯垫无钢圈具有特定功能分区设计的运动型文胸，其由如下特定功能区域组成：肩带1、罩杯2、底围3、鸡心4、土台5、侧比6、附属部7。
目前的一个技术问题就是如何设计一种面料，它在不同变形条件下，有不同的杨氏模量。有关这种材料的实现方法请参见本发明人的中国发明专利申请“开发具有分段变形模量及强力的柔性材料设计原理及制作方法”(申请号201210378062.7)。而文中七种面料，均是根据“开发具有分段变形模量及强力的柔性材料设计原理及制作方法”(申请号201210378062.7)而制作而成的。
本专利中的另一个技术问题就是如何设计一种面料，它在不同变形条件下，有液态水(汗液)动态吸附及转移功能。有关这种面料的实现方法请参见本发明人的中国发明专利申请“一种具有动态吸附与转移功能的多孔材料的设计原理及制作方法”(申请号201210378024.1)。有关液态水动态传递综合指数的测量方法可以参见国家标准GB21655.2-2009，纺织品湿速干性的评定第2部分动态水分传递法。而文中七种面料，均是根据“一种具有动态吸附与转移功能的多孔材料的设计原理及制作方法”(申请号 201210378024.1)而制作而成的。
运动强度对乳房的位移及加速度有相当大的影响。因此为了便于设计的实际操作，在本发明中以新陈代谢率表示不同的运动强度状态。新陈代谢率≤2.5METs：低运动量状态；2.5METs＜新陈代谢率≤8.0METs：中运动量状态；新陈代谢率＞8.0METs：高运动量状态。这一表示方法是一优选的表示方法，但并不是唯一表示方法，可以根据实际需要进行不同的分级。
同时乳房的大小与质量也是密切地与运动中的乳房位移量相关，因此本设计方法将文胸罩杯的型尺寸也设计为一个变量，罩杯的型由A至G。根据变量：运动强度与罩杯尺寸对所设计的运动文胸材料的杨氏模量进行设计。
由此在本设计方法中不同运动强度与所需要的罩杯大小对面料的杨氏杨氏模量设计了如表一所示的基本参考选择表。表中的数据为优选参数，其范围可以是优选参数上下变化15％。所述低运动量杨氏模量、中运动量杨氏模量、高运动量杨氏模量的数值不相同，均随着罩杯尺寸的增大而呈增大趋势。
表一运动文胸在各种运动状态下的杨氏模量表(单位：kPa)
Figure PCTCN2014094835-appb-000001
运用以上两种方法制成一种运动文胸，包括用于容纳乳房的两个罩杯2、分别连接在两个罩杯2上部，用于固定在人体上的两根肩带1、连接于两 个罩杯2的底部边缘的环状底围3、连接于两个罩杯2之间的鸡心4、与罩杯2的下边缘和鸡心4的下边缘连接的土台5、连接于罩杯2的底部侧面，用于堆塑乳房的侧比6、以及连接在鸡心4和两个罩杯2之间和填补肩带1之间空缺的附属部7；其特征在于，肩带1、罩杯2、底围3、鸡心4、土台5、侧比6、附属部7分别是采用七种对汗液具有动态吸附及转移的功能的面料制成，而七种面料的液态水动态传递综合指数均大于或等于3，且七种面料在不同的变型量下分别具有预定的不同杨氏模量。
肩带1具有肩带初始长度，且肩带1所采用的面料在拉伸量小于等于40％的肩带初始长度的变型过程中均具有相当于罩杯低运动量杨氏模量的1-2倍的肩带低运动量杨氏模量，本实施中优选为1.5倍；在拉伸量大于40％的肩带初始长度的变型过程中均具有相当于罩杯高运动量杨氏模量的1.5-2.5倍的肩带高运动量杨氏模量，本实施中优选为2倍。
罩杯2具有罩杯初始长度，罩杯2所采用的面料在拉伸长度小于等于1cm的变型过程中具有罩杯低运动量杨氏模量；在拉伸长度为1-2.5cm之间的变型过程中具有罩杯中运动量杨氏模量；在拉伸长度大于等于2.5cm的变型过程中具有罩杯高运动量杨氏模量。
底围3具有底围初始长度，底围3所采用的面料，在拉伸量小于等于25％的底围初始长度的变型过程中均具有相当于罩杯低运动量杨氏模量的1-2倍的底围低运动量杨氏模量，本实施中优选为1.5倍；在拉伸量大于25％的底围初始长度的变型过程中均具有相当于罩杯高运动量杨氏模量的1.5-2.5倍的底围高运动量杨氏模量，本实施中优选为2倍。
鸡心4具有鸡心初始长度，鸡心4所采用的面料，在拉伸量小于等于20％的鸡心初始长度的变型过程中均具有相当于罩杯低运动量杨氏模量的2-4倍 的鸡心低运动量杨氏模量，本实施中优选为3倍；在拉伸量大于20％的鸡心初始长度的变型过程中均具有相当于罩杯高运动量杨氏模量的3-5倍的鸡心高运动量杨氏模量，本实施中优选为4倍。
土台5具有土台初始长度，土台5所采用的面料，在拉伸量小于等于20％的土台初始长度的变型过程中均具有相当于罩杯低运动量杨氏模量的1-2倍的土台低运动量杨氏模量，本实施中优选为1.5倍；在拉伸量大于20％的土台初始长度的变型过程中均具有相当于罩杯高运动量杨氏模量的1.5-2.5倍的土台高运动量杨氏模量，本实施中优选为2倍。
侧比6具有侧比初始长度，侧比6所采用的面料，在拉伸量小于等于20％的侧比初始长度的变型过程中均具有相当于罩杯低运动量杨氏模量的1-2倍的侧比低运动量杨氏模量，本实施中优选为1.5倍；在拉伸量大于20％的侧比初始长度的变型过程中均具有相当于罩杯高运动量杨氏模量的1.5-2.5倍的侧比高运动量杨氏模量，本实施中优选为2倍。
附属部7具有附属部初始长度，附属部7所采用的面料，在拉伸量小于等于20％的附属部初始长度的变型过程中均具有相当于罩杯低运动量杨氏模量的1-2倍的附属部低运动量杨氏模量，本实施中优选为1.5倍；在拉伸量大于20％的附属部初始长度的变型过程中均具有相当于罩杯高运动量杨氏模量的1.5-2.5倍的附属部高运动量杨氏模量，本实施中优选为2倍。
为了进一步实证本发明的可实行性，根据本发明，进行了一系列的计算辅助仿真计算，利用计算机仿真设计软件，对设计原理与可行性进行了验证。
有研究表明(Mason，B.R.，K.-A.Page，et al.(1999).″An analysis of movement and discomfort of the female breast during exercise and  the effects of breast support in three cases.″Journal of Science and Medicine in Sport 2(2)：134-144.)，女性在裸体跑步过程中，在垂直方向，乳房部位需要承受2.5到3个重力加速度；穿着普通的文胸跑步，能减少0.7个重力加速度；穿着运动文胸跑步，能减少1.2个重力加速度。而且，胸部受到的力是循环力，有研究估算，一个女性一天的正常活动，胸部需要承受5000次达到5至15牛顿(因个人胸部重量各异)的循环力。
在本发明中首先参考先有的研究结果如陈晓荣，李可基等在营养学报(2010，/05，V.4，P.211)中报道的中国成年妇女平均运动水平为：
一、慢走(每分钟90步)3.5±0.3km/h；
二、快走(每分钟120步)5.2±0.4km/h；
三、慢跑(每分钟150步)8.1±1.2km/h；
四、中速跑(每分钟180步)11.7±1.9km/h
同时，Scurr，J.C.，J.L.White，et al.(2011)在其论文″Supported and unsupported breast displacement in three dimensions across treadmill activity levels.″Journal of Sports Sciences 29(1)：55-61.中报道乳房在无支托，与步行条件下其乳房运动位移量大约在4.2+1.0cm左右；而在跑的时候，相同无支托的乳房其位移量达到了15.2+4.2cm。相似的观察结果在Zhou J，W.N.Yu，et al.(2012).″Studies of three-dimensional trajectories of breast movement for better bra design.″Textile Research Journal 82(3)：242-254中也有报导。
在本实施例中，本发明针对运动文胸和女性胸部的有限元结构模型是在一台CPU主频为2.83GHz，双核，内存为3.25G的计算机上实现。该计算机采用WindowsXP操作系统，ABAQUS系统的版本是6.10-2。在本实施例中一位 胸围及乳房尺寸75B的成年女性被构建。根据参考文献Gefen，A.and B.Dilmoney(2007).″Mechanics of the normal woman′s breast.″Technology and Health Care 15(4)：259-271.”和“Chen，L.H.，S.P.Ng，et al.(2013).″A study of breast motion using non-linear dynamic FE ana lysis.″Ergonomics 56(5)：868-878.”。女性胸部软组织的参数是，杨氏模量为1.2kPa，泊松比是0.495。设每分钟90步为低运动量的运动，此时的新陈代谢率＝2.5METs。利用有限元模型，计算运动过程中女性胸部的垂直位移，得到在没有穿文胸的女性胸部在低运动量的情况下的最大垂直位移2.25cm。
仿真计算结果显示：此时乳房承受到的最大垂直应力位于乳房内部，数值为5.681kPa。
设每分钟180步为高运动量的运动，此时的新陈代谢率＝8.2METs。利用有限元模型，计算运动过程中女性胸部的垂直位移，得到在没有穿文胸的女性胸部在高运动量的情况下的最大垂直位移7.096cm；此时乳房承受到的最大垂直应力位于乳房内部，数值为23.4kPa。
低运动量情况下运动文胸的肩带，罩杯和底围的杨氏模量分别为90kPa，90kPa，90kPa，泊松比是0.495；设每分钟90步为低运动量的运动，此时的新陈代谢率＝2.4METs。利用有限元模型，计算运动过程中女性胸部的垂直位移，得到在穿着文胸的女性胸部在低运动量的情况下的最大垂直位移1.64cm，此时乳房承受到的最大垂直应力位于胸腔中部，数值0.3449kPa。
高运动量情况下运动文胸的肩带，罩杯和下围的杨氏模量分别为90kPa，90kPa，90kPa，泊松比是0.495；设每分钟180步为高运动量的运动，此时的新陈代谢率＝8.2METs。利用有限元模型，计算运动过程中女性胸部的 垂直位移，得到在穿着文胸的女性胸部在高运动量的情况下的最大垂直位移3.74cm，此时乳房承受到的最大垂直应力位于乳房内下侧，数值为2.593kPa。
在上述充分的计算机辅助仿真设计计算的基础上，利用本发明人先有的发明技术制备了不同变形条件下具有不同杨氏模量的针织材料，用于本设计的运动文胸中，具体应用表示如下表：实际穿着测试结果表明在一个可控的环境气象室中，当受试者(75B)穿着所设计的运动文胸以5km/h速度在跑步机上进行低运动量运动，其乳房的平均最大位移是0.5cm；以8km/h速度在跑步机上进行高运动量运动，其乳房的平均最大位移是1.1cm。
此外，在可控环境气象室中，受试者穿着所发明的文胸与市面常见不具备液态水(汗液)动态吸附与转移功能、在不同的变型量下只具有相同的杨氏模量的商业款运动文胸，在指定流程按规定时间进行一系列运动对比穿着试验，包括平均体温变化值、体内核心温度变化值、胸部与文胸间微环境温度变化值、左边文胸罩杯运动后汗液聚集值、舒适程度、透气程度，具体检测比较结果进行统计学(重复测量方差)分析如下：
表1.平均体温变化值
(文胸：p＜0.001；文胸*运动状态：p＜0.001；运动状态：p＜0.001)
Figure PCTCN2014094835-appb-000002
Figure PCTCN2014094835-appb-000003
表2.体内核心温度变化值
(文胸：p＝0.136；文胸*运动状态：p＜0.001；运动状态：p＜0.001)
Figure PCTCN2014094835-appb-000004
表3.胸部与文胸间微环境温度变化值
(文胸：p＜0.05；文胸*运动状态：p＜0.001；运动状态：p＝0.066)
Figure PCTCN2014094835-appb-000005
表4.左边文胸罩杯运动后汗液聚集值(文胸：p＜0.05)
文胸类型 单位(g.m-2.h-1)
商业款文胸 162.08±9.50
所发明文胸 113.43±50.63
表5.主观问卷调查舒适程度(不舒适-舒适：1-7)
(文胸：p＜0.001；文胸*运动状态：p＜0.001；运动状态：p＜0.05)
Figure PCTCN2014094835-appb-000006
表6.主观问卷调查透气程度(闷-透气：1-7)
(文胸：p＜0.05；文胸*运动状态：p＜0.001；运动状态：p＜0.05)
Figure PCTCN2014094835-appb-000007
对比不同织物结构对受试者胸部汗液传递蒸发效率、表面热散失效率和人体核心体温的上升速率的影响，结果显示所发明的文胸在试穿运动试验中 皮肤温度，织物与皮肤微环境温度和人体核心温度等指标与商业款相比具有显著性优势。此外，在受试者主观问卷调查结果中显示，本发明文胸主观舒适性透气性亦具有显著优势。
本发明的运动文胸的性能具有的显著优势，其主要依靠织物的弹性而形成对胸部的压力进而达到固定乳房的目的，其在剪裁上充分考虑了人体工程学，从而在得到良好固定性的同时保持相对的舒适性；可以根据不同的运动强度所造成的乳房位移及动量大小相应地自动调节文胸材料的杨氏模量，可以自动调节汗汽与汗液由皮肤表面向文胸外表面传递特性，从而在各种运动状态下可以穿戴健康舒适，防止或减少高强度运动对乳房造成的损伤，并通过有效提高胸部汗液在文胸中的传递与蒸发效率以达到提高胸部皮肤表面热散失效率，延缓人体核心体温的上升速率，适于女性运动时穿着。
以上结合具体实施例，进一步阐述本发明。但这些实施例仅用于说明本发明而不是用于限制本发明的实施范围。此外还应该理解，在阅读本发明的内容的后，本领域相关技术人员可以对本发明作各种改动和修改，这些等价形式同样落于本申请所附要求书中所限定的范围。

Claims (8)

  1. 一种运动文胸，包括用于容纳乳房的两个罩杯(2)、分别连接在所述两个罩杯(2)上部，用于固定在人体上的两根肩带(1)、连接于所述两个罩杯(2)的底部边缘的环状底围(3)、连接于所述两个罩杯(2)之间的鸡心(4)、与所述罩杯(2)的下边缘和所述鸡心(4)的下边缘连接的土台(5)、连接于所述罩杯(2)的底部侧面，用于堆塑乳房的侧比(6)、以及连接在所述鸡心(4)和两个罩杯(2)之间和填补所述肩带(1)之间空缺的附属部(7)；其特征在于，所述肩带(1)、罩杯(2)、底围(3)、鸡心(4)、土台(5)、侧比(6)、附属部(7)分别是采用七种对汗液具有动态吸附及转移的功能的面料制成，而所述七种面料的液态水动态传递综合指数均大于或等于3，且所述七种面料在不同的变型量下分别具有预定的不同杨氏模量。
  2. 根据所述权利要求1所述的运动文胸，其特征在于：当定义人体在新陈代谢率≤2.5METs时处于低运动量状态、2.5METs＜新陈代谢率≤8.0METs时处于中运动量状态、新陈代谢率＞8.0METs时处于高运动量状态时，所述罩杯(2)所采用的面料在所述低运动量状态下具有相应的罩杯低运动量杨氏模量，在所述中运动量状态下具有相应的罩杯中运动量杨氏模量，在所述高运动量状态下具有相应的罩杯高运动量杨氏模量，所述罩杯低运动量杨氏模量、罩杯中运动量杨氏模量、罩杯高运动量杨氏模量的数值各不相同，均随着罩杯尺寸的增大而呈增大趋势；所述肩带(1)具有肩带初始长度，且所述肩带(1)所采用的面料在拉伸量小于等于40％的肩带初始长度的变型过程中均具有相当于所述罩杯低运动量杨氏模量的1-2倍的肩带低运动量杨氏模量； 在拉伸量大于40％的肩带初始长度的变型过程中均具有相当于所述罩杯高运动量杨氏模量的1.5-2.5倍的肩带高运动量杨氏模量。
  3. 根据所述权利要求2所述的运动文胸，其特征在于，所述罩杯(2)具有罩杯初始长度，所述罩杯(2)所采用的面料在拉伸长度小于等于1cm的变型过程中具有所述罩杯低运动量杨氏模量；在拉伸长度为1-2.5cm之间的变型过程中具有所述罩杯中运动量杨氏模量；在拉伸长度大于等于2.5cm的变型过程中具有所述罩杯高运动量杨氏模量。
  4. 根据所述权利要求3所述的运动文胸，其特征在于，所述底围(3)具有底围初始长度，所述底围(3)所采用的面料，在拉伸量小于等于25％的底围初始长度的变型过程中均具有相当于所述罩杯低运动量杨氏模量的1-2倍的底围低运动量杨氏模量；在拉伸量大于25％的底围初始长度的变型过程中均具有相当于所述罩杯高运动量杨氏模量的1.5-2.5倍的底围高运动量杨氏模量。
  5. 根据所述权利要求4所述的运动文胸，其特征在于，所述鸡心(4)具有鸡心初始长度，所述鸡心(4)所采用的面料，在拉伸量小于等于20％的鸡心初始长度的变型过程中均具有相当于所述罩杯低运动量杨氏模量的2-4倍的鸡心低运动量杨氏模量；在拉伸量大于20％的鸡心初始长度的变型过程中均具有相当于所述罩杯高运动量杨氏模量的3-5倍的鸡心高运动量杨氏模量。
  6. 根据所述权利要求5所述的运动文胸，其特征在于，所述土台(5)具有土台初始长度，所述土台(5)所采用的面料，在拉伸量小于等于20％的土台初始长度的变型过程中均具有相当于所述罩杯低运动量杨氏模量的1-2倍的土台低运动量杨氏模量；在拉伸量大于20％的土台初始长度的变型过 程中均具有相当于所述罩杯高运动量杨氏模量的1.5-2.5倍的土台高运动量杨氏模量。
  7. 根据所述权利要求6所述的运动文胸，其特征在于，所述侧比(6)具有侧比初始长度，所述侧比(6)所采用的面料，在拉伸量小于等于20％的侧比初始长度的变型过程中均具有相当于所述罩杯低运动量杨氏模量的1-2倍的侧比低运动量杨氏模量；在拉伸量大于20％的侧比初始长度的变型过程中均具有相当于所述罩杯高运动量杨氏模量的1.5-2.5倍的侧比高运动量杨氏模量。
  8. 根据所述权利要求7所述的运动文胸，其特征在于，所述附属部(7)具有附属部初始长度，所述附属部(7)所采用的面料，在拉伸量小于等于20％的附属部初始长度的变型过程中均具有相当于所述罩杯低运动量杨氏模量的1-2倍的附属部低运动量杨氏模量；在拉伸量大于20％的附属部初始长度的变型过程中均具有相当于所述罩杯高运动量杨氏模量的1.5-2.5倍的附属部高运动量杨氏模量。
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