Three-dimensional adjusting buckle

Abstract

The utility model relates to the field of adjusting buckles, in particular to a three-dimensional adjusting buckle. The bra aims to solve the problems that the bra shoulder straps are uncomfortable and easy to wear and loosen when being buckled back. The adjusting buckle comprises a frame and a barrier strip, the frame is divided into a transverse part and a vertical part which are located on the same horizontal plane, and the two ends of the barrier strip are smoothly connected with the vertical part to form a first through hole and a second through hole. The middle of each barrier strip is bent upwards to form an arc shape, sufficient containing space is provided for the shoulder straps, discomfort of a user caused by protrusions is avoided, and friction cutting damage of the shoulder straps is reduced. The frame is provided with an arc-shaped concave part, so that the shoulder strap fixing effect is enhanced. The ratio is reasonable, the shoulder strap is convenient to put on, take off and adjust, and the fixing firmness is improved. The ratio of the barrier strip to the perforation width is optimized, friction is reduced, and longitudinal adjustment is facilitated. The frame and the barrier strips are integrally formed, the structural stability is enhanced, the fault risk is reduced, and the production efficiency is improved. The section is designed to be round, oval or kidney-shaped and fits the outline of the shoulder strap, so that the comfort and the stability are improved.

Description

Technical Field

[0001] The utility model relates to the field of adjusting buckles, in particular to a three-dimensional adjusting buckle. Background Art

[0002] In the field of women's underwear structure, the adjusting buckle of the shoulder strap is a key component connecting the main body of the underwear and the shoulder, and the design is crucial. Among the existing adjusting fasteners, the flat "day" - shaped buckle has been widely used because of its simple structure, easy manufacturing and low cost. The design principle of the day - shaped buckle is relatively intuitive. Its main body is composed of a horizontal partition strip, straight parts and feet on both sides, resembling the Chinese character "日". As people's requirements for the comfort and beauty of underwear increase day by day, the design defects of the day - shaped buckle gradually emerge. Especially when it is necessary to buckle back and forth two or more layers of straps, a large bulge often forms at the horizontal partition strip part of the day - shaped buckle. This bulge not only increases the discomfort during wearing.

[0003] Chinese utility model patent with the publication number CN221204213U discloses an adjusting fastener, a bra and a luggage case with the adjusting fastener. The adjusting fastener includes a buckle frame and a horizontal partition strip. The horizontal partition strip includes a straight part and a foot. The straight part and the foot are fixedly connected, and the included angle between the straight part and the foot is a right angle; the foot is connected to the buckle frame and equally divides the buckle frame; there are at least 2 straight parts, and all the straight parts are parallel to each other. Due to the existence of the foot, when the strap is passed through the adjusting fastener more than two times back and forth, the bulge formed on one side of the adjusting fastener will be reduced, reducing the discomfort of the user during use. In addition, because the included angle between the straight part and the foot of the horizontal partition strip is a right angle, the strap can be tightly stuck in the adjusting fastener after being passed through and is not easy to slide, so as to keep the adjusted length unchanged. However, the two ends at the lower part of the horizontal partition strip are right - angled and the included angle between the straight part and the foot is a right angle, which is easy to cause friction and abrasion to the shoulder strap, resulting in easy damage of the shoulder strap. And the buckle frame and the horizontal partition strip are of the same width. When the buckle frame and the horizontal partition strip are too wide, the shoulder strap is easy to tilt and deviate during buckling, resulting in loosening of the shoulder strap. When the buckle frame is too narrow, it is inconvenient for the shoulder strap to be inserted, reducing the production efficiency. Content of the Utility Model

[0004] The utility model aims to overcome the following defects in the above - mentioned prior art: when the shoulder straps of a bra are buckled back and forth two or more layers of shoulder straps, a large bulge is formed at the horizontal partition strip part of the day - shaped buckle, causing discomfort during wearing; the two ends at the lower part of the horizontal partition strip are right - angled and the included angle between the straight part and the foot is a right angle, resulting in easy friction and abrasion at these right - angled parts when the shoulder strap is frequently adjusted or pulled by external force, thus accelerating the damage of the shoulder strap; when the buckle frame and the horizontal partition strip are too wide, the shoulder strap is easy to tilt and deviate due to uneven force or external force during buckling, resulting in loosening of the shoulder strap, affecting the support effect and wearing stability of the underwear; when the buckle frame is too narrow, it increases the difficulty of inserting the shoulder strap and reduces the production efficiency.

[0005] The technical solution adopted by the utility model is to provide a three-dimensional adjustment buckle, a three-dimensional adjustment buckle, comprising a frame and a barrier strip, wherein the frame is divided into a horizontal portion and a vertical portion, and the horizontal portion and the vertical portion are on the same horizontal plane; the two ends of the barrier strip smoothly transition to connect the vertical portions at both ends of the frame, dividing the frame into a first perforation and a second perforation, and the middle of the barrier strip is bent upward to form an arc-shaped curved portion, and the curved portion is not on the same plane as the horizontal portion and the vertical portion.

[0006] The upwardly curved center of the barrier strip creates a curved section that provides ample space for the shoulder straps, eliminating the problem of the adjustment buckle forming a large protrusion on the barrier strip. This ensures that the adjustment buckle area remains flat, regardless of whether the shoulder strap is fastened in a single or multi-layer configuration, enhancing the user's wearing experience. Furthermore, the adjustment buckle utilizes a smooth transition between the ends of the barrier strip to connect to the vertical portion of the frame, preventing direct friction between the two sides of the shoulder strap. Even with frequent adjustments or external forces, the shoulder strap can move smoothly under the guidance of the curved section, reducing the risk of friction and damage, thereby effectively extending the service life of the shoulder strap.

[0007] Furthermore, the lateral portion is recessed into the frame to form a first arc-shaped recess, so that when the shoulder strap is straightened, this arc-shaped recess can provide an additional fixing point to press against the lateral side of the shoulder strap, thereby effectively preventing the shoulder strap from sliding in the up and down directions, and enhancing the stability and comfort of the shoulder strap during use.

[0008] Furthermore, the portion where the vertical portion is connected to the barrier strip is recessed into the frame to form a second recess, thereby enhancing the structural strength of the portion where the barrier strip is connected to the frame. This recessed design makes the connection stronger. When the shoulder strap is straightened, the barrier strip can withstand greater tension and will not cause fatigue and deformation of the material at the connection portion due to long-term pressure, thereby improving the stability and durability of the adjustment buckle. At the same time, the second recess can resist the left and right sides of the shoulder strap at the connection between the first perforation, the second perforation and the barrier strip, effectively preventing the shoulder strap from tilting in the left and right directions.

[0009] The vertical parts of the second recess corresponding to the first perforation and the second perforation respectively protrude outward from the frame in an arc shape. The length L1 of the first perforation and the second perforation is greater than the length L2 of the barrier strip, which reserves more space for inserting or exiting the shoulder strap, so that the shoulder strap can be looser during perforation. While improving the efficiency of shoulder strap perforation during production, it also increases the freedom of the shoulder strap after perforation, so that the shoulder strap can be more flexibly adjusted according to the needs of the wearer, and reduces the wear and damage of the shoulder strap caused by over-tight perforations.

[0010] Furthermore, the ratio of the lengths L1 of the first and second perforations to the length L2 of the barrier strip is set to greater than 1:0.7. This ratio design makes the perforations more spacious laterally than the barrier strip, facilitating the insertion, removal, and adjustment of the shoulder strap. It also allows the shoulder strap to be more securely fixed to the adjustment buckle, reducing the risk of tilting or deviation caused by loose shoulder straps.

[0011] Furthermore, the ratio of the width D2 of the barrier strip to the width D1 of the first perforation and the second perforation is 1:3 to 1:5, making the longitudinal space of the perforation more spacious than the barrier strip, which not only facilitates the insertion or exit of the shoulder straps, but also reduces the friction and wear between the shoulder straps or the shoulder straps and the edges of the perforations, allowing the shoulder straps to be adjusted longitudinally over a wider range within the perforations. Users can easily adjust the tightness of the shoulder straps according to personal needs, thereby ensuring optimal wearing comfort and stability.

[0012] Furthermore, the convex arc of the vertical portion corresponding to the first and second perforations is greater than the concave arc of the first recess, and the concave arc of the first recess is greater than 17 / 18π. This range enables the first recess to more effectively support the lateral side of the shoulder strap. When the shoulder strap is straightened, this design provides a more stable support surface, preventing the shoulder strap from sliding vertically.

[0013] Furthermore, the curvature of the curved portion is greater than 17 / 18π, and the distance between the endpoint of the top of the curved portion and the bottom of the frame is greater than 2mm, so that the barrier strip forms an upward bulge in the middle, providing sufficient accommodation space for the shoulder strap, which can better fit the natural shape of the shoulder strap, reduce the friction and pressure between the shoulder strap and the adjustment buckle, and ensure that the adjustment buckle area remains flat regardless of whether the shoulder strap is single-layer or multi-layer, thereby improving the wearer's comfort.

[0014] Furthermore, the first and second perforations are symmetrically arranged with the barrier strip as the axis of symmetry. This eliminates the need to distinguish between left and right during production and installation, allowing for faster insertion of the shoulder strap through the adjustment buckle. Furthermore, this symmetrical design ensures that when the shoulder strap is straightened, the force applied is evenly distributed on both sides of the barrier strip, helping to reduce concentrated wear on the adjustment buckle at a single point and extending its service life. Furthermore, the even force distribution also contributes to improved wear stability and comfort for the user.

[0015] Furthermore, the frame and the barrier strip are integrally formed, which not only reduces the risk of failure due to loose or damaged connection parts, enhances the structural stability of the entire adjustment buckle, but also simplifies the production process, reduces production costs, and improves production efficiency.

[0016] Furthermore, the cross-section of the frame and the barrier strip is designed to be circular, oval or waist-shaped, which can better fit the contour of the shoulder strap. Compared with the traditional right-angle or straight design, this cross-sectional shape reduces the gap between the shoulder strap and the shoulder strap, thereby improving the stability and comfort of the shoulder strap, while reducing the sharp edges when in contact with the shoulder strap, reducing the risk of cuts caused by friction, and extending the service life of the shoulder strap.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the upwardly curved protrusion in the middle of the barrier strip forms an arc-shaped curved portion, which provides sufficient accommodation space for the shoulder straps, avoids the discomfort caused by the protrusion, and reduces the friction and cutting between the shoulder straps and the adjustment buckles, thereby extending the service life of the shoulder straps. The horizontal and vertical portions of the frame are designed with arc-shaped recesses, which enhance the fixing effect of the shoulder straps and prevent the shoulder straps from sliding and tilting. The lengths of the first and second perforations are greater than the barrier strips, and the ratio is reasonably set, which facilitates the insertion, removal and adjustment of the shoulder straps, while improving the fixing firmness of the shoulder straps. The width ratio of the barrier strips to the perforations is optimized, which reduces the friction between the shoulder straps and the edges of the perforations, and facilitates the longitudinal adjustment of the shoulder straps. In addition, the frame and the barrier strips are integrally formed, which enhances the structural stability, reduces the risk of failure, and improves production efficiency. The circular, oval or waist-shaped cross-sectional design better fits the contour of the shoulder straps, reduces friction and cutting, and improves wearing comfort and shoulder strap stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the present utility model.

[0019] Figure 2 It is a top view of the utility model.

[0020] Figure 3 It is the main view of the present utility model.

[0021] Figure 4 It is a side view of the present utility model.

[0022] Figure 5 This is an example of the size ratio of the utility model Figure 1 Sectional view.

[0023] Figure 6 This is an example of the size ratio of the utility model Figure 2 Sectional view.

[0024] Figure 7 This is an example of the shoulder strap being straightened in the utility model Figure 1 .

[0025] Figure 8 This is an example of the shoulder strap being straightened in the utility model Figure 2 .

[0026] Figure 9It is a dimensional sectional view of the utility model. DETAILED DESCRIPTION

[0027] The drawings in this utility model are for illustrative purposes only and are not to be construed as limiting the scope of this utility model. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the products. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0028] Example:

[0029] like Figure 1 and Figure 2 As shown, this embodiment provides a three-dimensional adjustment buckle, including a frame 1 for adjusting and restraining the shoulder strap, and a barrier strip 2 for adjusting and suppressing the shoulder strap. The frame 1 is divided into a horizontal portion 11 for limiting the upper and lower sides of the shoulder strap and a vertical portion 12 for limiting the left and right sides of the shoulder strap. These two parts are perpendicular to each other on the same horizontal plane and smoothly transition to form a stable frame foundation. The two ends of the barrier strip 2 smoothly transition to the vertical portions 12 at both ends of the frame 1, dividing the frame 1 into two independent first through-holes 3 and second through-holes 4 for inserting or exiting the shoulder strap, as shown in FIG. Figure 3 and Figure 4 As shown, the middle of the barrier strip 2 is bent upward to form an arc-shaped curved portion 21 for accommodating the shoulder strap. The curved portion 21 is not in the same plane as the transverse portion 11 and the vertical portion 12.

[0030] The transverse portion 11 includes a first recess 111 formed inwardly of the frame 1. The first recess 111 is inwardly of the frame 1 in an arc shape, so that when the shoulder strap is straightened, the arc-shaped recess can provide an additional fixing point against the lateral side of the shoulder strap, thereby effectively preventing the shoulder strap from sliding in the up and down directions.

[0031] like Figure 5 As shown, the vertical portion 12 includes a second recess 121 recessed into the frame 1 at the connection point with the barrier strip 2. This serves to enhance the structural strength of the connection between the barrier strip 2 and the frame 1, allowing the barrier strip 2 to withstand greater tension without fatigue and deformation due to prolonged pressure. Furthermore, the second recess 121 abuts against the left and right sides of the shoulder strap at the junctions between the first and second perforations 3 and 4 and the barrier strip 2, effectively preventing the shoulder strap from tilting or sliding left or right.

[0032] The vertical portions 12 of the second recess 121 corresponding to the positions of the first and second perforations 3 and 4 protrude outward from the frame 1 to form an arc shape. The length L1 of the first and second perforations 3 and 4 is greater than the length L2 of the barrier strip 2. The ratio of the length L1 of the first and second perforations 3 and 4 to the length L2 of the barrier strip 2 is greater than 1:0.7. This makes the perforations more spacious laterally than the barrier strips, ensuring sufficient space within the perforations for the passage and adjustment of multiple shoulder straps, facilitating the insertion, removal, and adjustment of the shoulder straps. This also allows the shoulder straps to be more securely fixed to the adjustment buckle, reducing the risk of tilting or deviation caused by loose shoulder straps.

[0033] like Figure 6 As shown, the ratio of the width D2 of the barrier strip 2 to the width D1 of the first perforation 3, as well as the ratio of the width D2 of the barrier strip 2 to the width D1 of the second perforation 4, are both controlled within the range of 1:3 to 1:5. This design makes the longitudinal space of the perforation more spacious than that of the barrier strip, ensuring that the shoulder strap will not encounter excessive resistance when passing through. This not only facilitates the insertion or exit of the shoulder strap, but also reduces friction and wear between the shoulder straps or between the shoulder straps and the edges of the perforations.

[0034] like Figure 7 and Figure 8 As shown, the convex arc angle of the vertical portion 12 corresponding to the first through hole 3 and the second through hole 4 is greater than the concave arc angle of the first concave portion 111 , and the concave arc angle of the first concave portion 111 is greater than 17 / 18π.

[0035] like Figure 9 As shown, the curvature of the curved portion 21 is greater than 17 / 18π, and the distance between the top endpoint of the curved portion 21 and the bottom of the frame is greater than 2 mm, so as to ensure that sufficient accommodation space is provided for the multi-layer shoulder straps, so that whether the single-layer or multi-layer shoulder straps are fastened, the adjustment buckle part can be kept flat, thereby improving the user's wearing experience.

[0036] The first and second perforations 3 and 4 are symmetrically arranged around the barrier strip 2, one on each side of the barrier strip 2. This design eliminates the need to distinguish left from right during production and installation, allowing for faster insertion of the shoulder strap through the adjustment buckle. Furthermore, this symmetrical design ensures that when the shoulder strap is straightened, the stress points are evenly distributed on both sides of the barrier strip 2, helping to reduce concentrated wear on the adjustment buckle at a single stress point and extending its service life.

[0037] The frame 1 and barrier strip 2 are integrally formed. The barrier strip 2 and frame 1 are molded from the same material in a single process. This connection method not only reduces the risk of failure due to loose or damaged connections, but also enhances the structural stability of the entire adjustment buckle.

[0038] The cross-sections of the horizontal portion 11, the vertical portion 12 and the barrier strip 2 of the frame 1 are circular, oval or waist-shaped, which fit the shoulder straps better without rubbing or cutting the shoulder straps. Moreover, they fit the skin better and are more comfortable, which improves the durability of the shoulder straps and also improves the wearing experience of the user.

[0039] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A three-dimensional adjustment buckle, comprising a frame (1) and a barrier strip (2), wherein the frame (1) is divided into a transverse portion (11) and a vertical portion (12), the transverse portion (11) and the vertical portion (12) being on the same horizontal plane, characterized in that: The two ends of the barrier strip (2) smoothly transition to connect the vertical portions (12) at the two ends of the frame (1), dividing the frame (1) into a first through-hole (3) and a second through-hole (4). The middle of the barrier strip (2) is bent upward to form an arc-shaped curved portion (21), and the curved portion (21) is not in the same plane as the horizontal portion (11) and the vertical portion (12).

2. The three-dimensional adjustment buckle according to claim 1, characterized in that: The transverse portion (11) includes a first recessed portion (111) recessed into the frame (1), and the first recessed portion (111) is recessed into the frame (1) in an arc shape.

3. The three-dimensional adjustment buckle according to claim 2, characterized in that: The vertical portion (12) includes a portion connected to the barrier strip (2) that is recessed into the frame (1) to form a second recess (121). The vertical portion (12) at the second recess (121) corresponding to the first through hole (3) and the second through hole (4) protrudes outward from the frame (1) in an arc shape. The length L1 of the first through hole (3) and the second through hole (4) is greater than the length L2 of the barrier strip (2).

4. The three-dimensional adjustment buckle according to claim 3, characterized in that: The ratio of the length L1 of the first perforation (3) and the second perforation (4) to the length L2 of the barrier strip (2) is greater than 1:0.

7.

5. The three-dimensional adjustment buckle according to claim 4, characterized in that: The ratio of the width D2 of the barrier strip (2) to the width D1 of the first perforation (3) is 1:3 to 1:5; the ratio of the width D2 of the barrier strip (2) to the width D1 of the second perforation (4) is 1:3 to 1:

5.

6. The three-dimensional adjustment buckle according to claim 2, characterized in that: The radian of the convex circular arc of the vertical portion (12) corresponding to the first through hole (3) and the second through hole (4) is greater than the radian of the concave portion (111), and the concave radian of the first concave portion (111) is greater than 17 / 18π.

7. The three-dimensional adjustment buckle according to claim 1, characterized in that: The curvature of the curved portion (21) is greater than 17 / 18π, and the distance between the top endpoint of the curved portion (21) and the bottom of the frame is greater than 2 mm.

8. The three-dimensional adjustment buckle according to claim 5, characterized in that: The first perforation (3) and the second perforation (4) are symmetrically arranged with the barrier strip (2) as the axis of symmetry.

9. The three-dimensional adjustment buckle according to claim 8, characterized in that: The frame (1) and the barrier strip (2) are integrally formed.

10. The three-dimensional adjustment buckle according to claim 9, characterized in that: The cross sections of the horizontal portion (11) and the vertical portion (12) of the frame (1) are circular, elliptical or waist-shaped; the cross section of the barrier strip (2) is circular, elliptical or waist-shaped.

Images