Underwear

Abstract

The underwear comprises an underwear body made of elastic fabric, a zipper, a side supporting piece used for providing side lifting force and a clamping strip used for providing lower limit, two cover parts are arranged on the underwear body, the zipper is arranged on the underwear body and located between the two cover parts, and the underwear body is opened when the zipper is unzipped. The side supporting pieces are arranged on the underwear body and located on the periphery of the outer side of the cover part, and the clamping strips are arranged on the underwear body and located below the cover part. The underwear can enable the big chest to be thin and small and the chest shape to be attractive, and is suitable for sports and daily use.

Description

Technical Field

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

[0002] Due to the physiological characteristics of women, the breasts will shake significantly during exercise. This shaking can easily cause the breasts to sag, affecting movement during exercise and causing pain after exercise. Therefore, women have higher requirements for the functionality of underwear, which can support the breasts and prevent breast shaking.

[0003] For example, Chinese patent CN211211475U describes a sports bra made from a nylon and cotton blend elastic fabric. It features elastic edging and an elastic band at the bottom to ensure a closer fit, preventing exposure and shifting during exercise, and enhancing shock absorption. However, women often wear sports bras for everyday use, not just during workouts. Therefore, higher functional requirements are placed on sports bras, such as making large breasts appear smaller and more defined, and providing a flattering shape. The aforementioned sports bra compresses the entire breast to fix it and prevent vibration. While this may make the breasts appear as a compressed circle, resulting in a smaller and more defined shape, the tight compression can lead to an unattractive breast shape. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art, the present invention provides an underwear that can make large breasts appear thinner and smaller and improve the breast shape, making it suitable for both sports and daily use.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] An underwear, comprising:

[0007] The underwear body is made of elastic fabric and has two covers.

[0008] A zipper is located on the body of the bra and between the two bra sections. When the zipper is opened, it is used to open the body of the bra.

[0009] Side support pieces are used to provide lateral lifting force. The side support pieces are set on the bra body and located on the outer periphery of the cover.

[0010] A retaining strip is used to provide a lower limit position. The retaining strip is set on the body of the underwear and located below the cover.

[0011] Furthermore, the side support pieces are made of elastic fabric and are fixed to the outer side of the bra body.

[0012] Furthermore, the side support pieces are adhesively attached to the main body of the underwear.

[0013] Furthermore, the upper end of the side support piece is connected to the shoulder strap connection of the bra body, the lower end of the side support piece is connected to the lower edge of the bra body, and the horizontal side of the lower end of the side support piece extends to the zipper.

[0014] Furthermore, the side support extends in a curved shape near the edge of the cover.

[0015] Furthermore, the locking strip is fixed to the inner side of the bra body, and the locking strip is located within the coverage area of ​​the side support piece in the bra body.

[0016] Furthermore, the underwear body includes an outer elastic fabric and an inner elastic fabric, which are bonded and fixed together by an elastic adhesive layer. The elastic adhesive layer includes a frame portion and a side binding portion. The frame portion extends along the edge of the underwear body and includes an upper elastic portion and a lower elastic portion. The upper end of the side binding portion is connected to the upper elastic portion, and the lower end of the side binding portion is connected to the lower elastic portion. The side binding portion is inclined, with its upper end extending towards the front chest and its lower end extending towards the back waist.

[0017] Furthermore, the elastic adhesive layer also includes an arc-shaped side support elastic part, the upper end of which is connected to the upper edge elastic part, and the lower end of which is connected to the lower edge elastic part. The arc-shaped side support elastic part is located within the coverage area of ​​the side support piece in the underwear body.

[0018] Furthermore, the elastic layer also includes a back shoulder strap elastic part, the upper end of which is connected to the shoulder strap connection of the upper edge elastic part, and the lower end of which is connected to the lower edge elastic part.

[0019] Furthermore, the cover is equipped with a small cup, which can be shaped like a rabbit ear, a petal, or a teardrop, etc.

[0020] Furthermore, it also includes an inner pad, which is located inside the zipper, with one side of the inner pad connected to one side of the underwear body at the zipper.

[0021] Furthermore, it also includes a zipper, which is connected to the bra body and located between the zipper and the inner padding.

[0022] Furthermore, the zipper includes a zipper head and two chain straps, which are respectively connected to the underwear body. The zipper head is used to operate the teeth of the two chain straps to engage or disengage. The zipper head includes a zipper head body, a pull tab, and a locking element. The zipper head body is provided with a through hole and a Y-shaped slide for the chain straps to pass through. The through hole leads to the Y-shaped slide. The pull tab is provided with a pivot, which is rotatably mounted on the zipper head body. The pivot is provided with an eccentric protrusion. The locking element is elastically deformable. One end of the locking element is connected to the zipper head body, and the other end of the locking element is provided with a locking claw that passes through the through hole. The locking claw is used to insert into or disengage from the chain straps. When the pull tab rotates relative to the zipper head body to a preset angle, the eccentric protrusion pushes the locking element to elastically deform, causing the locking claw to disengage from the chain straps, thereby unlocking the zipper.

[0023] Furthermore, the main body of the slider includes a first wing plate, a second wing plate, and a guide post. The front ends of the first wing plate and the second wing plate are connected by the guide post to form a Y-shaped slide. The guide post is provided with a slot for inserting one end of the locking member to form a fixed connection. A through hole is provided on the first wing plate. The first wing plate is also provided with two sets of constraint parts for constraining the pivot. The two sets of constraint parts are arranged at intervals, and the locking member is located between the two sets of constraint parts. The constraint part includes two constraining teeth arranged at intervals. The pivot passes through the two constraining teeth. The upper ends of the two constraining teeth deform and move closer to each other to restrict the pivot from disengaging.

[0024] In summary, the underwear provided by this utility model has the following technical effects:

[0025] The bra body, made of a front-mounted zipper and elastic fabric, utilizes the inelasticity of the zipper to create a fixed support band between the two sections. Combined with the support panels, side panels, and gusseted strips, the bra uses the pull of the zipper and the elasticity of the bra body to slim and reduce the appearance of smaller areas. Simultaneously, it provides space in the bust area, creating lifting, shaping, and support, resulting in an overall effect that makes a large bust appear smaller and more aesthetically pleasing. Furthermore, the front zipper facilitates wearing. Other beneficial effects will be demonstrated in the detailed implementation. Attached Figure Description

[0026] Figure 1 This is a front view structural diagram of the underwear according to an embodiment of the present utility model.

[0027] Figure 2 This is a three-dimensional structural diagram of the underwear according to an embodiment of the present utility model.

[0028] Figure 3 An exploded view of the underwear according to an embodiment of this utility model.

[0029] Figure 4 A three-dimensional structural diagram of the elastic adhesive layer in an embodiment of this utility model.

[0030] Figure 5A three-dimensional structural diagram of the zipper pull according to an embodiment of this utility model.

[0031] Figure 6 A cross-sectional view of the zipper pull in this embodiment of the present invention.

[0032] Figure 7 An exploded view of the zipper puller according to an embodiment of this utility model.

[0033] The meanings of the reference numerals in the attached figures are as follows:

[0034] 1. Underwear body; 11. Outer elastic fabric; 12. Inner elastic fabric; 13. Elastic adhesive layer; 131. Edge; 1311. Upper elastic edge; 1312. Lower elastic edge; 132. Side binding; 133. Curved side support elastic; 134. Back shoulder strap elastic; 2. Small cup; 3. Zipper; 31. Zipper pull; 311. Zipper pull body; 3111. Through hole; 3112. Y-shaped slide; 3113, First wing plate; 3114, Second wing plate; 3115, Guide post; 3116, Slot; 3117, Constraint part; 3118, Constraint tooth; 3119, Bayonet; 312, Pull tab; 3121, Pivot; 3122, Eccentric protrusion; 313, Locking element; 3131, Locking claw; 3132, T-shaped foot; 4, Side support plate; 5, Positioning strip; 6, Shoulder strap; 7, Inner pad; 8, Buckle. Detailed Implementation

[0035] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0036] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation 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.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0038] See Figure 1 and Figure 2This utility model discloses an underwear, including an underwear body 1, a zipper 3, two side support pieces 4, two locking strips 5, two shoulder straps 6, inner padding 7, and a zipper 8. The underwear body 1 is made of elastic fabric, preferably a high-elasticity and breathable fabric. The underwear body 1 has two coverings arranged opposite each other, preferably with small rabbit ear-shaped cups 2 to utilize their thinness and prevent nipple protrusion. The two shoulder straps 6 are spaced apart and connected to the underwear body 1. The shoulder straps 6 are preferably adjustable and retractable, thus providing adjustment space to accommodate different breast heights and making them suitable for a wider range of people. Of course, the shoulder straps 6 can also be integrally formed with the underwear body 1, that is, the fabric of the underwear body 1 extends from the front to the back to form a shoulder strap. The zipper 3 is front-mounted in the underwear, located between the two coverings on the underwear body 1. When the zipper 3 is opened, it is used to open the underwear body 1 for easy wearing. The two side support pieces 4 are located on the underwear body 1, each side support piece 4 being located on the outside of one covering piece. Side support pieces 4 provide lateral lifting force; two locking strips 5 are located on the bra body 1, each positioned below a portion of the bra, providing a lower limit; an inner pad 7 is located inside the zipper 3, with one side connected to one side of the bra body 1 at the zipper 3, serving to isolate the zipper 3 and prevent pinching or other injuries from contact with the user's skin; multiple zipper buckles 8 can be provided, extending along the length of the zipper 3 and connected to the bra body 1. The body 1 is located between the zipper 3 and the inner pad 7. The specific structure of the zipper 8 can adopt any of the existing technologies (such as including an S-shaped buckle and two pieces of fabric, or including a figure-9 buckle and two pieces of fabric, or the back buckle structure used in existing underwear). When wearing, the zipper 8 can be used to initially tighten the underwear body 1 to provide a pre-wearing function, and then the zipper 3 can be pulled to further facilitate the wearing of the underwear. Since the zipper 8 is located between the zipper 3 and the inner pad 7, the zipper 8 can be hidden and avoids it from touching the user's skin.

[0039] In other examples, the cover may be cupless or made of other small cups (such as teardrop or petal shapes).

[0040] In the above solution, the zipper 3 is not elastic, while the bra body 1 is elastic. When worn, the bra body 1 elastically contracts, and the non-elasticity of the zipper 3 creates a fixed force band between the two parts, thus making the user's breasts appear thinner and smaller. Furthermore, based on the combination of the bra body, side support panels 4, and locking strips 5, a reserved space is formed in the breast area. The side support panels 4 provide lateral lifting force, the locking strips 5 provide a lower limit, and the zipper 3 provides central traction. When compressing the breasts, the breasts are concentrated in the reserved space, preventing the two breasts from being squeezed together. This also prevents the breasts from sagging and lifts and shapes the breasts, preventing them from shifting. As a result, the bra can achieve the effect of making large breasts appear thinner and smaller, with a beautiful breast shape, making it suitable for both sports and daily use.

[0041] Combination Figure 3 and Figure 4 In this embodiment, the bra body 1 adopts a double-layer fabric structure, including an outer elastic fabric 11 and an inner elastic fabric 12. The outer elastic fabric 11 and the inner elastic fabric 12 are bonded and fixed together by an elastic adhesive layer 13. The elastic adhesive layer 13 is preferably a jelly adhesive, which gives the elastic adhesive layer 13 better elasticity and toughness, allowing the user to better support the chest during exercise, and the bra as a whole is relatively thin and seamless. The thickness of the elastic adhesive layer 13 is preferably 0.5mm-1.5mm. The small cup 2 is located between the outer elastic fabric 11 and the inner elastic fabric 12.

[0042] Preferably, the elastic adhesive layer 13 includes a frame portion 131, a side binding portion 132, an arc-shaped side support elastic portion 133, and a back shoulder strap elastic portion 134. The frame portion 131 extends along the edge of the bra body 1 and includes an upper edge elastic portion 1311 and a lower edge elastic portion 1312. The lower edge elastic portion 1312 can replace the elastic function of the existing lower binding strap, eliminating the need for an additional lower binding strap, which simplifies the bra structure and saves costs. The width of the lower edge elastic portion 1312 is preferably 15mm-40mm. The upper end of the back shoulder strap elastic portion 134 is connected to the shoulder strap 6 connection point of the upper edge elastic portion 1311, and the lower end of the back shoulder strap elastic portion 134 is connected to... The elastic band 1312 at the lower edge helps stabilize the overall frame strength of the elastic layer 13, making the elastic fabric fit the user's body better and generating a force that pulls the shoulders back, lifting the chest upwards. The upper end of the side band 132 is connected to the upper edge elastic band 1311, and the lower end of the side band 132 is connected to the lower edge elastic band 1312. The side band 132 is inclined with its upper end extending towards the front chest and its lower end extending towards the back waist. Thus, based on the gathering effect of the lower edge elastic band 1312 on the lower part of the chest and the lifting effect of the side support plate 4, the side band 132, which is inclined forward at the upper end and backward at the lower end, generates a lateral pulling force that pushes the upper part of the chest forward, which can improve the lateral pulling effect.

[0043] Based on the application of the side support piece 4, in order to improve the submission effect of the side support piece 4, preferably, the upper end of the arc-shaped side support elastic part 133 is connected to the upper edge elastic part 1311, and the lower end of the arc-shaped side support elastic part 133 is connected to the lower edge elastic part 1312. The arc-shaped side support elastic part 133 is located within the coverage area of ​​the side support piece 4 in the underwear body 1. The distance between the arc-shaped side support elastic part 133 and the side binding part 132 gradually increases from top to bottom, that is, the upper end of the arc-shaped side support elastic part 133 and the side binding part 132 are close together. The upper ends of the section 132 are relatively close together, resulting in a smaller distance. However, the lower ends of the curved side support elastic section 133 and the lower ends of the side binding section 132 are relatively far apart, and the two are roughly shaped like a trumpet opening downwards. In this way, the elasticity of the side support piece 4 can be enhanced by using the curved side support elastic section 133, thereby better lifting the breasts. Moreover, when combined with the application of the side binding section 132, an overall lateral force is generated to push the fat from the waist to the front of the bra, which can further improve the lifting, lateral binding, minimizing, and slimming effects.

[0044] See Figures 1 to 3 In this embodiment, the side support piece 4 is also made of elastic fabric. The side support piece 4 is fixed to the outer side of the underwear body 1, preferably by adhesive bonding. The positioning strip 5 is fixed to the inner side of the underwear body 1, located within the coverage area of ​​the side support piece 4 in the underwear body 1. Preferably, the positioning strip 5 is made by rolling fabric into a strip and then sewing it to the underwear body 1. The side support piece 4 serves to locally increase elasticity, generating lateral lifting force without affecting elastic deformation, resulting in a higher aesthetic appeal and better flatness. Furthermore, the positioning strip 5, made of rolled fabric, provides a better and more comfortable feel when in contact with the user's skin, and is less likely to cause indentations or abrasions. In addition, the upper end of the side support piece 4 is connected to the shoulder strap 6 of the bra body 1, and the lower end of the side support piece 4 is connected to the lower edge of the bra body 1. The horizontal side of the lower end of the side support piece 4 extends to the zipper 3. The side support piece 4 extends in a curve near the edge of the bra, so that the lifting force of the side support piece 4 starts from below the breast and extends in an arc along the edge of the breast to the shoulder strap 6 of the bra body 1. This allows the side support piece 4 to provide good support and lifting force for the breast, and it is more comfortable to wear.

[0045] It is understandable that the card slot strip 5 can also be formed in other ways, and the card slot strip 5 can also be connected to the underwear body 1 by means of adhesive or internal interlayer, etc. The specific form of the card slot strip 5 is not limited here.

[0046] See Figures 5 to 7 In this embodiment, the zipper 3 is preferably a thinner No. 5 zipper 3 to avoid the zipper 3 bulging.

[0047] The zipper 3 includes a zipper pull 31 and two chain straps. The two chain straps are respectively connected to the underwear body 1 by sewing. The zipper pull 31 is used to operate the teeth of the two chain straps to engage or disengage. The teeth of the chain straps preferably face inward so that they are not exposed when engaged, thus improving the aesthetics.

[0048] The zipper puller 31 includes a zipper puller body 311, a pull tab 312, and a locking element 313. The zipper puller body 311 is provided with a through hole 3111 and a Y-shaped slide 3112 for the chain to pass through. The through hole 3111 leads to the Y-shaped slide 3112. Specifically, the zipper puller body 311 includes a first wing plate 3113, a second wing plate 3114, and a guide post 3115. The front ends of the first wing plate 3113 and the second wing plate 3114 are connected by the guide post 3115 to form a zipper puller body. The Y-shaped slide 3112 has a slot 3116 on the guide post 3115 and a through hole 3111 on the first wing plate 3113. The first wing plate 3113 is also provided with two sets of spaced-apart constraint parts 3117. The function of the constraint parts 3117 is to limit the rotational installation of the pull tab 312 on the pull head body 311. The constraint parts 3117 include two spaced-apart constraint teeth 3118, and the upper ends of the two constraint teeth 3118 deform and move closer to each other.

[0049] The pull tab 312 is preferably a sheet-like structure. A pivot 3121 is provided on the pull tab 312, and an eccentric protrusion 3122 is provided on the pivot 3121. The pivot 3121 is rotatably mounted on the zipper head body 311. Specifically, the pivot 3121 passes between the two constraint teeth 3118 of each set of constraint parts 3117. After the upper ends of the two constraint teeth 3118 deform and come together, they can restrict the pivot 3121 from disengaging from them, thereby facilitating the installation of the pull tab 312 on the zipper head body 311. Its structure is simple, low in cost, and conducive to controlling the overall thickness of the zipper 3.

[0050] The locking member 313 is elastically deformable and has a multiple-bending shape. One end of the locking member 313 is connected to the slider body 311, specifically, one end of the locking member 313 is inserted into the slot 3116 to form a fixed connection. More preferably, one end of the locking member 313 is provided with a T-shaped foot 3132, and the slot 3116 is provided with a bayonet 3119. When the locking member 313 is inserted into the slot 3116, the T-shaped foot 3132 is embedded in the bayonet 3119, thereby forming a fixation; the other end of the locking member 313... A locking claw 3131 is provided through the through hole 3111. The locking claw 3131 is used to insert or disengage from the chain belt. The locking member 313 is located between two sets of constraint parts 3117. The constraint parts 3117 can be used to prevent the locking member 313 from shifting. The eccentric protrusion 3122 on the pull tab 312 can abut against the locking member 313. When the pull tab 312 rotates relative to the pull head body 311 to a preset angle, the eccentric protrusion 3122 pushes the locking member 313 to elastically deform, causing the locking claw 3131 to disengage from the chain belt, thereby unlocking.

[0051] The specific value of the preset angle can be set as needed, preferably between 30° and 90°, with the direction in which the user wears the underwear as a reference. When the pull tab 312 is in a downward rotating state and attached to the first wing plate 3113 of the pull head body 311, the locking member 313, under the action of the elastic restoring force, causes the locking claw 3131 to insert into the chain belt to form a lock (specifically, the locking claw 3131 can be inserted into the chain teeth of one of the chain belts), thereby achieving self-locking and ensuring that the underwear will not break open. At the same time, the locking member 313 will provide a reaction force to the pull tab 312, keeping the pull tab 312 in place. The first wing plate 3113 is fitted to ensure the flatness of the inner surface. When the pull tab 312 is rotated upward, the eccentric protrusion 3122 will gradually push the locking member 313 to deform elastically until the pull tab 312 rotates relative to the pull head body 311 to a preset angle (e.g., 45°) so that the locking claw 3131 disengages from the chain to form an unlocked state. At this time, the pull tab 312 can be pulled to make the pull head 31 operate the chain teeth of the two chains to engage or disengage. Of course, it can be understood that the pull tab 312 can be in the unlocked state within a certain range after the rotation angle exceeds the preset angle.

[0052] Thus, compared to the self-locking zipper of the prior art, the zipper 3 solution described above has a simpler overall structure, lower cost, and is easier to control the overall thickness of zipper 3 to meet the requirements of overall flatness of underwear.

[0053] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. An underwear, characterized in that, include: The underwear body (1) is made of elastic fabric and has two covers. A zipper (3) is provided on the underwear body (1) and located between the two cover parts. When the zipper (3) is pulled open, it is used to open the underwear body (1). Side support piece (4) for providing lateral lifting force, the side support piece (4) is disposed on the underwear body (1) and located on the outer periphery of the cover; A locking strip (5) for providing a lower limit position is provided on the underwear body (1) and located below the cover.

2. The underwear according to claim 1, characterized in that, The side support piece (4) is made of elastic fabric and is fixed to the outer side of the underwear body (1).

3. The underwear according to claim 2, characterized in that, The side support piece (4) is glued to the underwear body (1).

4. The underwear according to claim 2, characterized in that, The upper end of the side support piece (4) is connected to the shoulder strap (6) connection of the bra body (1), the lower end of the side support piece (4) is connected to the lower edge of the bra body (1), and the lateral side of the lower end of the side support piece (4) extends to the zipper (3).

5. The underwear according to claim 4, characterized in that, The side support (4) extends in a curved shape near the edge of the cover.

6. The underwear according to claim 1, characterized in that, The locking strip (5) is fixed to the inner side of the underwear body (1), and the locking strip (5) is located in the coverage area of ​​the side support piece (4) in the underwear body (1).

7. The underwear according to claim 1, characterized in that, The underwear body (1) includes an outer elastic fabric (11) and an inner elastic fabric (12). The outer elastic fabric (11) and the inner elastic fabric (12) are bonded and fixed together by an elastic adhesive layer (13). The elastic adhesive layer (13) includes a frame portion (131) and a side binding portion (132). The frame portion (131) extends along the edge of the underwear body (1). The frame portion (131) includes an upper edge elastic portion (1311) and a lower edge elastic portion (1312). The upper end of the side binding portion (132) is connected to the upper edge elastic portion (1311), and the lower end of the side binding portion (132) is connected to the lower edge elastic portion (1312). The side binding portion (132) is inclined with its upper end extending towards the front chest and its lower end extending towards the back waist.

8. The underwear according to claim 7, characterized in that, The elastic adhesive layer (13) also includes an arc-shaped side support elastic part (133), the upper end of which is connected to the upper edge elastic part (1311), and the lower end of which is connected to the lower edge elastic part (1312). The arc-shaped side support elastic part (133) is located in the coverage area of ​​the side support piece (4) in the underwear body (1).

9. The underwear according to claim 7, characterized in that, The elastic adhesive layer (13) also includes a rear shoulder strap elastic part (134), the upper end of which is connected to the shoulder strap (6) connection of the upper edge elastic part (1311), and the lower end of which is connected to the lower edge elastic part (1312).

10. The underwear according to claim 1, characterized in that, The cover is equipped with a small cup.

11. The underwear according to claim 1, characterized in that, It also includes an inner pad (7), which is located inside the zipper (3), and one side of the inner pad (7) is connected to one side of the underwear body (1) at the zipper (3).

12. The underwear according to claim 11, characterized in that, It also includes a zipper (8) which is connected to the underwear body (1) and located between the zipper (3) and the inner pad (7).

13. The underwear according to claim 1, characterized in that, The zipper (3) includes a zipper head (31) and two chain straps. The two chain straps are respectively connected to the underwear body (1). The zipper head (31) is used to operate the teeth of the two chain straps to engage or disengage. The zipper head (31) includes a zipper head body (311), a pull tab (312), and a locking member (313). The zipper head body (311) is provided with a through hole (3111) and a Y-shaped slide (3112) for the chain straps to pass through. The through hole (3111) leads to the Y-shaped slide (3112). The pull tab (312) is provided with a pivot (3121). The pivot (3121) is rotatably mounted on the zipper head body. On (311), an eccentric protrusion (3122) is provided on the pivot (3121). The locking member (313) is elastically deformable. One end of the locking member (313) is connected to the zipper body (311). The other end of the locking member (313) is provided with a locking claw (3131) that passes through the through hole (3111). The locking claw (3131) is used to insert into or disengage from the chain. When the pull tab (312) rotates relative to the zipper body (311) to a preset angle, the eccentric protrusion (3122) pushes the locking member (313) to elastically deform, causing the locking claw (3131) to disengage from the chain, thereby unlocking.

14. The underwear according to claim 13, characterized in that, The slider body (311) includes a first wing plate (3113), a second wing plate (3114), and a guide post (3115). The front ends of the first wing plate (3113) and the second wing plate (3114) are connected by the guide post (3115) to form the Y-shaped slide (3112). The guide post (3115) is provided with a slot (3116) for one end of the locking member (313) to be inserted and fixedly connected. The through hole (3111) is provided on the first wing plate (3113). (3113) is also provided with two sets of constraint parts (3117) for constraining the pivot (3121). The two sets of constraint parts (3117) are arranged at intervals, and the locking member (313) is located between the two sets of constraint parts (3117). The constraint part (3117) includes two spaced constraint teeth (3118). The pivot (3121) passes through the two constraint teeth (3118). The upper ends of the two constraint teeth (3118) deform and move closer to each other to restrict the pivot (3121) from disengaging.

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