Elasticity-adjustable combined back strap suitable for bra-integrated garments
By combining the design of the shoulder straps with the elastic mother-child straps, the tightness of the bra garment can be precisely adjusted, solving the problem of loosening caused by the aging of the elastic connecting straps, and improving comfort and support.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- GUANGZHOU XINGXING COTTON TECHNOLOGY R & D CO LTD
- Filing Date
- 2025-12-12
- Publication Date
- 2026-06-18
AI Technical Summary
The elastic connecting bands in existing bras and apparel are prone to aging and loosening during frequent use and washing, failing to meet the individual needs of different wearers and affecting comfort and support.
Design a modular baby carrier, including a main elastic carrier and a secondary elastic carrier. By adjusting the length of the secondary elastic carrier and arranging them side by side, the tightness of the carrier can be precisely adjusted to ensure a close fit and support to the back skin.
It improves wearing comfort, reduces discomfort caused by looseness or tightness, provides extra support, maintains the stability and aesthetics of the straps, and is suitable for various bra garments.
Smart Images

Figure CN2025142208_18062026_PF_FP_ABST
Abstract
Description
An elastic, adjustable combination bra strap suitable for bra-inspired garments Technical Field
[0001] This application belongs to the field of clothing technology, and specifically relates to an elastic adjustable combination strap suitable for bra-wearing garments. Background Technology
[0002] With the development of clothing technology, existing technologies have achieved integrated designs of bras and garments, such as lingerie and vests with built-in bras. These garments typically include two cups and a connecting strap (also called a back strap). This connecting strap is mainly used to connect the two cups to better provide coverage and support for the breasts. For example, Chinese patent CN204969506U discloses a bra, which also mentions that the second connecting end of the left cup is connected to the second connecting end of the right cup via a connecting strap. However, to meet the needs of wearers with different body shapes and to ensure the comfort and fit of these garments, this connecting strap is often designed to have a certain degree of elasticity.
[0003] However, existing elastic band designs have an inherent drawback. While these bands initially conform well to the wearer's body shape, over time, especially with frequent wear and washing, the elastic material in the bands gradually loses its original elasticity due to fatigue and aging. This change causes the bands to loosen, making the bra overall looser and no longer conforming to the wearer's body curves, thus reducing the bra's support and comfort.
[0004] Furthermore, due to individual differences, different wearers have varying needs regarding the tightness and support of underwear. Traditional elastic band designs often lack sufficient adjustment space, making it difficult to meet the personalized needs of all wearers. This limitation is particularly pronounced for women who seek a more snug fit and supportive effect.
[0005] Therefore, there is an urgent need for a flexible and adjustable combination bra strap suitable for bra-wearing garments. Summary of the Invention
[0006] To address the problems in related technologies, this application proposes an elastic adjustable combination strap suitable for bra-integrated garments, overcoming the aforementioned technical issues in existing technologies. This application designs the sub-elastic strap and the main elastic strap into a combination strap, enabling precise adjustment of the tightness of the back of the bra-integrated garment according to individual body shape and tightness requirements. This not only improves wearing comfort but also ensures a close fit between the combination strap and the back skin, reducing discomfort caused by looseness or tightness.
[0007] The technical solution of this application is implemented as follows: an elastic adjustable combination back strap suitable for bra-wearing garments, including a female elastic back strap, the female elastic back strap being used to connect two symmetrically arranged bra cups, the female elastic back strap being located on the back of the bra-wearing garment, and the inner side of the female elastic back strap being used to contact the skin on the back.
[0008] The inner side of the main elastic shoulder strap is provided with a sub-elastic shoulder strap for adjusting its tightness, and the sub-elastic shoulder strap and the main elastic shoulder strap are arranged side by side, inside and outside; the first and last ends of the sub-elastic shoulder strap are respectively connected to the inner side of the main elastic shoulder strap.
[0009] The width of the sub-elastic shoulder strap is smaller than the width of the mother elastic shoulder strap.
[0010] It should be noted that when worn, because the sub-elastic shoulder strap and the main elastic shoulder strap are arranged side by side inside and outside, and the sub-elastic shoulder strap is narrower, the sub-elastic shoulder strap is always covered by the main elastic shoulder strap and will not exceed the coverage area of the main elastic shoulder strap.
[0011] The sub-elastic shoulder strap is slidably connected to a length adjustment buckle, and the tightness of the main elastic shoulder strap can be adjusted by lengthening or shortening the sub-elastic shoulder strap;
[0012] The elasticity of the sub-elastic shoulder strap is greater than that of the mother elastic shoulder strap.
[0013] Furthermore, the elastic back strap has a double-layer structure without a back buckle.
[0014] Furthermore, the mother elastic shoulder strap includes an inner and outer skin-adhering layer and a surface fabric layer, and the child elastic shoulder strap is disposed on the skin-adhering layer; one side of the skin-adhering layer is a skin-adhering and non-slip surface.
[0015] Furthermore, the skin-adhesive layer includes two positioning portions, each of which contains positioning cartilage; when worn, each positioning portion is in close contact with the underarm skin; the first and last ends of the sub-elastic shoulder strap extend to the positioning portions on both sides respectively.
[0016] Furthermore, the first and last ends of the sub-elastic shoulder strap are movably connected to the positioning part via detachable connecting buckles.
[0017] Furthermore, each of the positioning parts is provided with a shoulder strap connection point, and the two shoulder strap connection points are located on the same horizontal line; the first and last ends of the sub-elastic shoulder strap are respectively connected with buckles, which are used to engage with the shoulder strap connection points.
[0018] Furthermore, the first and last ends of the sub-elastic shoulder strap are fixedly connected to the positioning part by adhesive or sewing.
[0019] Furthermore, the fabric layer and the skin-adhesive layer are bonded together along their upper and lower edges to form an upper portion and a lower portion, respectively; the fabric layer and the skin-adhesive layer form a non-bonded cavity between the upper portion and the lower portion.
[0020] Furthermore, the sub-elastic back strap has an elastic structure with inner and outer double layers bonded together.
[0021] Furthermore, both the sub-elastic shoulder strap and the mother elastic shoulder strap are made of non-slip fabric.
[0022] Furthermore, the elastic shoulder strap is made of spandex.
[0023] The beneficial effects of this application are:
[0024] (1) By arranging the sub-elastic shoulder strap and the mother elastic shoulder strap side by side, and by the sliding connection and length adjustment function of the sub-elastic shoulder strap inside the mother elastic shoulder strap, the combined shoulder strap described in this application can be precisely adjusted in tightness according to individual body shape and comfort needs. This not only improves the comfort when wearing it, but also ensures that the combined shoulder strap fits closely to the skin of the back, reducing discomfort caused by looseness or tightness.
[0025] (2) When worn, this application tightens the sub-elastic back strap laterally to pull the main elastic back strap, and the main elastic back strap then pulls the upper part of the two cups laterally to make the combined back strap widely applicable to any bra-wearing garment.
[0026] (3) Because the elasticity of the sub-elastic shoulder strap is greater than that of the main elastic shoulder strap, when the main elastic shoulder strap is stretched, the sub-elastic shoulder strap can provide additional support to help maintain the stability of the main elastic shoulder strap. At the same time, the sub-elastic shoulder strap is always covered by the main elastic shoulder strap and will not exceed its coverage area, ensuring the aesthetics of the combined shoulder strap. This concealed design allows the combined shoulder strap to maintain functionality while also taking into account aesthetics. Attached Figure Description
[0027] Figure 1 is a front view of the cup and combined back strap of this application after they are unfolded.
[0028] Figure 2 is a rear view of the cup and combined back strap of this application after they are unfolded.
[0029] Figure 3 is a front view of the combined harness of this application.
[0030] Figure 4 is a rear view of the present application when the combination-type shoulder strap is worn.
[0031] Figure 5 is another structural schematic diagram of the cup and combined back strap combination of this application.
[0032] Markings: 1. Cup; 2. Mother elastic back strap; 21. Outer fabric layer; 22. Skin-contact layer; 3. Daughter elastic back strap; 31. Length adjustment buckle; 32. Buckle; 4. Positioning part; 41. Positioning cartilage. Detailed Implementation
[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0034] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment 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 application.
[0035] Example 1
[0036] As shown in Figures 1-4, this embodiment provides an elastic adjustable combination back strap suitable for bra-wearing garments, including a female elastic back strap 2, which is used to connect two symmetrically arranged bra cups 1. The female elastic back strap 2 is located on the back of the bra-wearing garment, and the inner side of the female elastic back strap 2 is used to contact the skin on the back.
[0037] The inner side of the main elastic shoulder strap 2 is provided with a sub-elastic shoulder strap 3 for adjusting its tightness, and the sub-elastic shoulder strap 3 and the main elastic shoulder strap 2 are arranged side by side, inside and outside; the first and last ends of the sub-elastic shoulder strap 3 are respectively connected to the inner side of the main elastic shoulder strap 2.
[0038] The width of the sub-elastic shoulder strap 3 is smaller than the width of the mother elastic shoulder strap 2.
[0039] It should be noted that when worn, because the sub-elastic back strap 3 and the mother elastic back strap 2 are arranged side by side inside and outside, and the width of the sub-elastic back strap 3 is smaller, the sub-elastic back strap 3 is always covered by the mother elastic back strap 2 and will not exceed the coverage area of the mother elastic back strap 2.
[0040] The sub-elastic shoulder strap 3 is slidably connected to a length adjustment buckle 31, and the tightness of the mother elastic shoulder strap 2 can be adjusted by lengthening or shortening the sub-elastic shoulder strap 3.
[0041] The elasticity of the sub-elastic shoulder strap 3 is greater than that of the mother elastic shoulder strap 2.
[0042] Firstly, through the side-by-side arrangement of the sub-elastic shoulder strap 3 and the mother elastic shoulder strap 2, and the sliding connection and length adjustment function of the sub-elastic shoulder strap 3 inside the mother elastic shoulder strap 2, the combined shoulder strap described in this embodiment can be precisely adjusted for tightness according to individual body shape and comfort needs. This not only improves the comfort of wearing it, but also ensures a close fit between the combined shoulder strap and the back skin, reducing discomfort caused by looseness or tightness. At the same time, the length adjustment buckle 31 is a flat buckle, which helps to reduce friction with the skin, reduce the feeling of foreign objects, and improve aesthetics.
[0043] Furthermore, when worn, this embodiment tightens the female elastic back strap 2 laterally by tightening the sub-elastic back strap 3, and the female elastic back strap 2 then tightens the upper part of the two cups 1 laterally, making the combined back strap widely applicable to any bra-integrated garment.
[0044] Furthermore, because the elastic sub-strappable strap 3 is more elastic than the elastic female strap 2, it provides additional support when the female strap 2 is stretched, helping to maintain its stability. This design is particularly important during activity, effectively preventing the straps from slipping or deforming and improving the overall wearing experience. Simultaneously, the sub-strappable strap 3 is always covered by the female strap 2 and never exceeds its coverage area, ensuring the aesthetic appeal of the combined strap design. This discreet design allows the combined straps to maintain both functionality and aesthetics.
[0045] Specifically, the female elastic shoulder strap 2 is a double-layer structure without a back buckle.
[0046] It should be noted that when the bra-like garment is a strapless front-fastening bra, the combined back strap, as part of the bra, utilizes its elastic adjustment function. The sub-elastic back strap 3 first horizontally tightens the main elastic back strap 2, and the main elastic back strap 2 then further horizontally tightens the two cups 1, effectively preventing the bra from slipping down during wear. Moreover, through the synergistic cooperation between the front clasp and the combined back strap, the strapless front-fastening bra can maintain comfort and freedom of movement while achieving a supportive, lift-up, and anti-slip effect, even without shoulder straps.
[0047] Specifically, the mother elastic shoulder strap 2 includes an inner and outer skin-fitting layer 22 and a surface fabric layer 21, and the child elastic shoulder strap 3 is disposed on the skin-fitting layer 22; one side of the skin-fitting layer 22 is a skin-fitting and non-slip surface.
[0048] Specifically, the skin-adhesive layer 22 includes two positioning parts 4, each of which has a positioning cartilage 41 embedded therein; when worn, each of the positioning parts 4 is in close contact with the underarm skin; the first and last ends of the sub-elastic back strap 3 extend to the positioning parts 4 on both sides respectively.
[0049] More specifically, the first and last ends of the sub-elastic shoulder strap 3 are fixedly connected to the positioning part 4 by adhesive or sewing.
[0050] In this embodiment, the positioning part 4 plays a crucial role in fixing and preventing slippage in the design of the elastic shoulder strap 2. The positioning part 4 has a built-in positioning cartilage 41, a design that allows it to fit snugly against the underarm skin during wear, forming a stable support point. Because the positioning cartilage 41 has a certain degree of rigidity and support, it effectively prevents the elastic shoulder strap 2 from slipping or shifting during dynamic activities, thus ensuring that the elastic shoulder strap 2 always remains in the correct position, providing continuous comfort and support.
[0051] Specifically, the fabric layer 21 and the skin-adhesive layer 22 are attached to each other along their upper and lower edges, forming an upper portion and a lower portion respectively; the fabric layer 21 and the skin-adhesive layer 22 form a non-attached cavity between the upper portion and the lower portion.
[0052] The cavity design helps reduce the use of adhesive, makes it more breathable, and allows the elastic female strap 2 to maintain its original elasticity.
[0053] Specifically, the sub-elastic back strap 3 is an elastic structure with inner and outer double layers.
[0054] In this embodiment, the elastic design of the sub-elastic back strap 3 and the mother elastic back strap 2 enables each elastic back strap to provide stronger support and stability for the bra-wearing garment, ensuring that the bra-wearing garment remains stable during exercise or daily activities and reducing the risk of slipping or shifting.
[0055] Specifically, both the sub-elastic shoulder strap 3 and the mother elastic shoulder strap 2 are made of non-slip fabric, making each elastic shoulder strap skin-friendly and non-slip, further preventing the sub-elastic shoulder strap 3 and the mother elastic shoulder strap 2 from slipping down, while also being lighter and thinner.
[0056] More specifically, the sub-elastic shoulder strap 3 is made of spandex, giving it better elasticity and resilience. Even after repeated stretching, it quickly returns to its original shape, preventing deformation or loosening due to prolonged use and extending the product's lifespan. Furthermore, spandex is lightweight and soft, reducing friction and pressure on the back skin and improving wearing comfort, making it especially suitable for extended wear.
[0057] Example 2
[0058] This embodiment provides another elastic adjustable combination strap suitable for bra-inspired garments. Features not explained in this embodiment can be explained using the methods described in Embodiment 1, and will not be repeated here. The difference between this embodiment and Embodiment 1 is:
[0059] As shown in Figure 5, the first and last ends of the sub-elastic shoulder strap 3 are movably connected to the positioning part 4 via detachable connecting buckles.
[0060] More specifically, each of the positioning parts 4 is provided with a strap connection point, and the two strap connection points are located on the same horizontal line. This helps to maintain the horizontal position of the sub-elastic strap 3, prevent it from shifting or twisting during use, and further enhance the stability of the sub-elastic strap 3.
[0061] The first and last ends of the sub-elastic shoulder strap 3 are respectively connected to buckles 32, which are used to engage with the shoulder strap connection point.
[0062] In this embodiment, the detachable buckle design makes the installation and removal of the sub-elastic shoulder strap 3 exceptionally simple and quick. Users can easily install and remove the strap without complicated operations or tools, saving time and effort, improving ease of use, and also facilitating the maintenance and replacement of the sub-elastic shoulder strap 3.
[0063] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this application is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this application should also fall within the protection scope of the claims of this application. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this application.
Claims
1. An elastically adjustable combination bra strap suitable for bra-inspired garments, comprising a female elastic bra strap for connecting two symmetrically arranged bra cups, characterized in that: The elastic back strap is located at the back of the bra-wearing garment, and the inside of the elastic back strap is for contact with the skin on the back. The inner side of the main elastic shoulder strap is provided with a sub-elastic shoulder strap for adjusting its tightness, and the sub-elastic shoulder strap and the main elastic shoulder strap are arranged side by side, inside and outside; the first and last ends of the sub-elastic shoulder strap are respectively connected to the inner side of the main elastic shoulder strap. The sub-elastic shoulder strap is slidably connected to a length adjustment buckle, and the tightness of the main elastic shoulder strap can be adjusted by lengthening or shortening the sub-elastic shoulder strap.
2. The elastic adjustable combination strap suitable for bra-inspired garments according to claim 1, characterized in that, The female elastic shoulder strap has a double-layer structure without a back buckle; The width of the sub-elastic shoulder strap is smaller than the width of the mother elastic shoulder strap; the elasticity of the sub-elastic shoulder strap is greater than the elasticity of the mother elastic shoulder strap.
3. A flexible, adjustable combination bra strap suitable for clothing with a bra, as described in claim 1 or 2, characterized in that, The mother elastic shoulder strap includes an inner and outer skin-fitting layer and a fabric layer, and the child elastic shoulder strap is disposed on the skin-fitting layer; one side of the skin-fitting layer is a skin-fitting and non-slip surface.
4. The elastic adjustable combination strap suitable for bra-inspired garments according to claim 3, characterized in that, The skin-adhesive layer includes two positioning parts, each of which contains positioning cartilage; when worn, each positioning part is in close contact with the underarm skin; the first and last ends of the sub-elastic shoulder strap extend to the positioning parts on both sides respectively.
5. The elastic adjustable combination strap suitable for bra-inspired garments according to claim 4, characterized in that, The first and last ends of the sub-elastic shoulder strap are movably connected to the positioning part via detachable connecting buckles.
6. The elastic adjustable combination strap suitable for bra-inspired garments according to claim 5, characterized in that, Each of the positioning parts is provided with a shoulder strap connection point, and the two shoulder strap connection points are located on the same horizontal line; the first and last ends of the sub-elastic shoulder strap are respectively connected with buckles, which are used to engage with the shoulder strap connection points.
7. The elastic adjustable combination strap suitable for bra-inspired garments according to claim 4, characterized in that, The first and last ends of the sub-elastic shoulder strap are fixedly connected to the positioning part by adhesive or stitching.
8. The elastic adjustable combination strap for bra-inspired garments according to claim 3, characterized in that, The fabric layer and the skin-adhesive layer are attached to each other along their upper and lower edges, forming an upper portion and a lower portion respectively; the fabric layer and the skin-adhesive layer form a non-attached cavity between the upper portion and the lower portion.
9. A flexible, adjustable combination bra strap suitable for clothing with a bra as described in claim 1, characterized in that, The sub-elastic back strap has an elastic structure with inner and outer double layers.
10. The elastic adjustable combination strap for bra-inspired garments according to claim 1, characterized in that, The elastic shoulder strap is made of spandex.