Fastening structure and back hook for underwear

Abstract

The present invention discloses a fastening structure and a back hook for underwear, and relates to the technical field of underwear parts. The fastening structure includes a female and a male, a positioning ring is provided at one end of the female and a step is provided at the other end, a positioning ring is provided at one end of the male and a hook is provided at the other end, the step protrudes in a direction away from the bottom surface of the female positioning ring, and the male engages with the step through the hook to engage with the female. By providing the female with a step protruding in a direction away from the back of the human body, a retreat gap is formed between the step and the back of the human body. When the male engages with the step through the hook, the tip of the hook is located in the retreat gap, so that it does not come into contact with the back of the human body, effectively preventing the hook from pressing against the back of the human body and causing discomfort to the human body, and the overall wearing comfort is improved compared to the prior art. In addition, since the step protrudes in a direction away from the bottom surface of the female positioning ring, the male hook can be easily inserted into the step when wearing.

Description

[Technical field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to Chinese Patent Application No. 202211440908.5 (Title: Attachment Structure and Back Hook for Underwear) filed on November 17, 2022, the contents of which are incorporated herein by reference in their entirety. The present invention relates to the technical field of underwear parts, and in particular to a fastening structure and a back hook for underwear. [Background technology]

[0002] In the conventional fastening structure, the female is often a flat structure, part of which is bent on a stepped surface and has only one positioning ring. The conventional male is often formed by flatwise bending, part of the hook head is fitted into the inner ring of the positioning ring, there is no safety stopper, and there is only one positioning ring. The above conventional fastening structures are all fabric layers close to the back hook of the underwear, so the contact surface is large and the feeling of pressure on the skin is strong. In addition, in the folded structure, the folded part is usually easily deformed and even broken by force, which affects the service life of the entire underwear. Summary of the Invention

[0003] To overcome the deficiencies existing in the prior art, the present invention provides an attachment structure and a back hook for underwear.

[0004] In the present invention, the means for solving the technical problem are as follows: A fastening structure including a female and a male, The female has a positioning ring at one end and a step at the other end, The male has a positioning ring at one end and a hook at the other end; The step portion protrudes in a direction away from the bottom surface of the female positioning ring, and the male engages with the step portion via a hook to engage with the female.

[0005] Preferably, the step portion includes a horizontal engagement portion and a sloped portion, the horizontal engagement portion is parallel to the female positioning ring, the horizontal engagement portion is connected to the female positioning ring via the sloped portion, the horizontal engagement portion is located on one side away from the bottom surface of the female positioning ring, and the hook engages with the horizontal engagement portion.

[0006] Preferably, the knife has a pair of locating rings on either side thereof, and the knife is formed integrally with the entire strip of material by bending it.

[0007] Preferably, an engagement opening is formed between the male positioning ring and the hook, and a safety stop is provided on one side of the male positioning ring facing the hook.

[0008] Preferably, the top of the safety stopper is formed with an arc-shaped protrusion, and both sides are formed with arc-shaped smooth transitions with male locating rings and hooks respectively.

[0009] Preferably, the tip of the hook is provided with a curved portion that curves in a direction away from the engagement opening.

[0010] Preferably, the tip of the hook is bent toward the safety stopper, the rear end of the warped portion forms a narrowed portion in the engagement opening together with the safety stopper, and the tip of the warped portion forms an outwardly expanding guide portion in the engagement opening together with the male positioning ring.

[0011] Preferably, the male has a pair of locating rings on either side thereof, the male being formed integrally with the entire strip of material by bending it.

[0012] A back hook for underwear including a first connecting belt, a second connecting belt, and the above-mentioned fastening structure, A back hook for underwear, wherein the female is provided on a first connecting belt and the male is provided on a second connecting belt.

[0013] Preferably, the females are arranged in multiple rows in an array along the length of the first connecting belt, the females are fixed to the first connecting belt by a positioning ring and a sewing machine, the first connecting belt is made of multiple layers of fabric, the female positioning ring is covered within the fabric, the step portion protrudes to the outside of the first connecting belt, and ultrasonic press spots are provided at positions corresponding to the first connecting belt and the step portion, and multiple sets of males are provided at intervals along the width direction of the second connecting belt, and the males are fixed to the second connecting belt by a positioning ring and a sewing machine.

[0014] The beneficial effects of the present invention are as follows: 1. The female is provided with a step that protrudes away from the back of the human body, so that a retraction gap is formed between the step and the back of the human body. When the male is engaged with the step via the hook, the tip of the hook is located in the retraction gap and does not come into contact with the back of the human body, so that the hook is effectively prevented from pressing against the back of the human body and causing discomfort to the human body, resulting in a better overall wearing comfort than the prior art. 2. The stepped portion protrudes away from the bottom surface of the female positioning ring, so that the male hook can be easily inserted into the stepped portion when attaching. [Brief description of the drawings]

[0015] [Figure 1] FIG. 2 is a perspective view of a scalpel according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a side view of a scalpel according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a perspective view of a male according to an embodiment of the present invention. [Figure 4] FIG. 2 is a side view of a male in an embodiment of the present invention. [Diagram 5] FIG. 2 is a perspective view of a fastening structure according to an embodiment of the present invention. [Figure 6] FIG. 2 is a side view of the fastening structure according to the embodiment of the present invention. [Figure 7] FIG. 2 is a perspective view of a first connecting belt in the first embodiment of the present invention. [Figure 8] FIG. 4 is a schematic local view of a first connecting belt in an embodiment of the present invention. [Figure 9] FIG. 4 is a perspective view of a second connecting belt in the embodiment of the present invention. [Figure 10] FIG. 2 is a schematic diagram of an engagement structure of a back hook for underwear in accordance with the first embodiment of the present invention. [Figure 11] FIG. 11 is a perspective view of a first connecting belt in a second embodiment of the present invention. [Figure 12] FIG. 11 is a schematic diagram of an engagement structure of a back hook for underwear in accordance with a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. Note that the description of these embodiments is for the purpose of understanding the present invention, and is not intended to limit the present invention. In addition, the technical features according to the embodiments of the present invention described below can be combined as long as they are not mutually inconsistent.

[0017] Example 1 As shown in FIGS. 1-6, the fastening structure provided in the present invention includes a female 10 and a male 20. The knife 10 has a positioning ring 31 at one end for fixing the knife 10, and a step portion 11 at the other end. A pair of positioning rings 31 are provided on each side of the knife 10. The knife 10 is integrally formed by bending an entire metal strip. The male 20 has a positioning ring 31 at one end for fixing the male 20, and a hook 21 at the other end. A pair of positioning rings 31 are provided on each side of the male 20. The male 20 is integrally formed by bending the entire metal strip. The step portion 11 protrudes in a direction away from the bottom surface of the positioning ring 31 of the scalpel 10. The male 20 engages with the scalpel 10 by engaging with the step portion 11 via the hook 21. In use, the positioning ring 31 of the scalpel 10 is located on the side closer to the human body. In other words, the positioning ring 31 of the scalpel 10 abuts against the back of the human body, and the step portion 11 protrudes in a direction away from the back of the human body.

[0018] Specifically, the female 10 is provided with a step 11 that protrudes away from the back of the human body, and a retraction gap 41 is formed between the step 11 and the back of the human body. When the male 20 engages with the step 11 via the hook 21, the tip of the hook 21 is located in the retraction gap 41 and does not come into contact with the back of the human body, effectively preventing the hook 21 from pressing against the back of the human body and causing discomfort to the human body, resulting in a better overall fit compared to the prior art. In addition, since the step 11 protrudes away from the bottom surface of the positioning ring 31 of the female 10, the hook 21 of the male 20 can be easily inserted into the step 11 when wearing.

[0019] Further, the step portion 11 includes a U-shaped horizontal engagement portion 12 and an inclined portion 13 provided at an incline. The horizontal engagement portion 12 is parallel to the positioning ring 31 of the scalpel 10. The horizontal engagement portion 12 is connected to the positioning ring 31 of the scalpel 10 via the inclined portion 13. The horizontal engagement portion 12 is located on the side farther from the bottom surface of the positioning ring 31 of the scalpel 10. The hook 21 engages with the horizontal engagement portion 12. In the case of flatwise bending, deformation and tearing are likely to occur when subjected to force, which affects the life of the entire underwear. Therefore, by providing the inclined portion 13, it is possible to prevent the formation of a flatwise bend in the scalpel 10, and by reducing the angle α between the horizontal engagement portion 12 and the plane on which the positioning ring 31 of the scalpel 10 is located, it is possible to prevent the positioning ring 31 of the scalpel 10 from being pulled excessively in a diagonal direction when the horizontal engagement portion 12 receives force, and one side of the positioning ring 31 of the scalpel 10 from pressing against the back of the human body and causing discomfort.

[0020] Furthermore, an engagement opening 42 is formed between the positioning ring 31 of the male 20 and the hook 21. In order to prevent the male 20 from easily falling off from the female 10, a safety stopper 22 that fits the horizontal engagement portion 12 is provided on one side of the positioning ring 31 of the male 20 toward the hook 21. The hook 21 extends until it faces the positioning ring 31 of the male 20. The safety stopper 22 corresponds to the engagement opening 42. When the male 20 and the female 10 are engaged, the safety stopper 22 aligns with the horizontal engagement portion 12 to restrict the position of the hook 21 to a certain extent, thereby preventing the hook 21 from easily falling off from the horizontal engagement portion 12.

[0021] Furthermore, the axial direction of the safety stopper 22 is the same as the axial direction of the hook 21. An arc-shaped protrusion 23 is formed at the top of the safety stopper 22, and along the axial direction, an arc-shaped smooth transition portion 24 is formed between the positioning ring 31 of the male 20 and the hook 21 on both sides of the safety stopper 22. The arc-shaped smooth transition portion 24 and the arc-shaped protrusion 23 allow the horizontal engagement portion 12 to be fitted relatively smoothly into the hook 21, improving the smoothness of the fitting. Although the arc-shaped smooth transition portion 24 is provided on both sides of the safety stopper 22, it does not affect the position regulation action of the safety stopper 22 and the horizontal engagement portion 12 with respect to the hook 21.

[0022] Furthermore, in order to make it easier for the hook 21 to engage with the flat catch portion, the tip of the hook 21 is provided with a curved portion 25 that curves in a direction away from the engagement opening 42. When the hook 21 is engaged with the horizontal engagement portion 12, the curved portion 25 acts as a guide.

[0023] Furthermore, in order to improve the positioning function, the tip of the hook 21 is bent toward the safety stopper 22, and the rear end of the warped portion 25 forms a narrowed portion 43 in the engagement opening 42 together with the safety stopper 22. The tip of the warped portion 25 forms an outwardly expanding guide portion 44 for guiding engagement in the engagement opening 42 together with the positioning ring 31 of the male 20.

[0024] In addition, in the prior art, when the flat hook formed by flatwise bending is compressed by an external force during wearing, one side of the flat hook is entirely compressed against the back of the human body, that is, the point of action is the entire plane of one side of the flat hook, so the area of ​​the frictional action surface is relatively large, and the feeling of pressure on the back of the human body is strong. By providing the curved portion 25, when compressed by an external force, only one point of action is formed at the tip of the curved portion 25, and the point of action forms a friction point with a relatively small area, so the feeling of pressure on the back of the human body when compressed by an external force is reduced. In addition, when compressed by an external force, there is only a point of action at the tip of the curved portion 25, and when the tip of the curved portion 25 receives a force, the rear end of the curved portion 25 and the semi-arc-shaped part at the rear end of the hook 21 form an effective elastic buffer, and after the external force is removed, the tip of the curved portion 25 recovers due to elastic deformation. The elastic buffering and recovery due to elastic deformation effectively prevent the hook 21 from plastically deforming due to stress, and the service life of the fastening structure is extended.

[0025] 7-10, the back hook for underwear includes a first connecting belt 50, a second connecting belt 60, and the fastening structure. The female 10 is provided on the first connecting belt 50, and the male 20 is provided on the second connecting belt 60.

[0026] Similarly, by providing the female 10 with a step portion 11 that protrudes in a direction away from the back of the human body, a retraction gap 41 is formed between the step portion 11 and the belt body of the first connecting belt 50. When the male 20 engages with the step portion 11 via the hook 21, the tip of the hook 21 is located in the retraction gap 41, so that the hook 21 does not press against the back of the human body, effectively preventing the hook 21 from pressing against the back of the human body and causing discomfort to the human body, and the overall wearing comfort of the back hook for underwear is improved compared to the conventional technology. In addition, since the step portion 11 protrudes in a direction away from the bottom surface of the positioning ring 31 of the female 10, the hook 21 of the male 20 can be easily inserted into the step portion 11 when wearing.

[0027] Furthermore, the females 10 are arranged in multiple rows in an array along the length direction of the first connecting belt 50. The females 10 are fixed to the first connecting belt 50 by a positioning ring 31 and a sewing machine. The first connecting belt 50 is composed of multiple layers of fabric. The positioning ring 31 of the females 10 is covered within the fabric, and the step portion 11 protrudes to the outside of the first connecting belt 50. Multiple sets of males 20 are provided at intervals along the width direction of the second connecting belt 60. The males 20 are fixed to the second connecting belt 60 by a positioning ring 31 and a sewing machine. The safety stoppers 22 push the fabric up onto the second connecting belt 60 to form protruding steppers 61. The outer edges of the first connecting belt 50 and the second connecting belt 60 are rounded by folding the fabric, and soft rounded edges are formed on both sides of the two sets of tips by the rounded corner folding process, thereby preventing sharp edges from being formed on the outer edges that may injure the skin, resulting in a back hook for underwear that is gentle on the skin, and also preventing the outer edges from peeling off due to washing.

[0028] Example 2 This embodiment differs from the above embodiment in the following respects. The females 10 are arranged in a plurality of rows in an array along the length direction of the first connecting belt 50. The females 10 are fixed to the first connecting belt 50 by a positioning ring 31 and a sewing machine. The first connecting belt 50 is made of a plurality of layers of fabric, the positioning ring 31 of the females 10 is covered in the fabric, and the step portion 11 protrudes to the outside of the first connecting belt 50. At positions facing the first connecting belt 50 and the step portion 11, ultrasonic press spots 51 are provided for improving the stability of the females 10 by ultrasonic hot pressing. This prevents the females 10 from slipping out of the protruding holes and the fabric layers from separating. A plurality of pairs of males 20 are provided at intervals along the width direction of the second connecting belt 60. The males 20 are fixed to the second connecting belt 60 by a positioning ring 31 and a sewing machine. The safety stopper 22 pushes the fabric up onto the second connecting belt 60 to form the protruding stepper 61.

[0029] Although the embodiments of the present invention have been described in detail above with reference to the drawings, the present invention is not limited to these embodiments. Those skilled in the art will recognize that any changes, modifications, substitutions, and variations made to these embodiments without departing from the principle and spirit of the present invention are within the scope of protection of the present invention.

[0030] Explanation of symbols 10. Scalpel 11. Step 12, horizontal engagement part 13, slope part 20, male 21. Hook 22. Safety stopper 23, arcuate process 24. Arc-shaped smooth transition 25. Warped part 31. Positioning ring 41. Evacuation gap 42, engagement opening 43, stenosis 44, Outer flaring guide part 50, 1st connecting belt 51. Ultrasonic press spot 60, second connecting belt 61. Protrusion stepper

Claims

1. A fastening structure including a female (10) and a male (20), The female (10) has a positioning ring (31) at one end and a step portion (11) at the other end. The male (20) has a positioning ring (31) at one end and a hook (21) at the other end; The step portion (11) protrudes in a direction away from the bottom surface of the positioning ring (31) of the female (10), and the male (20) engages with the step portion (11) via a hook (21) to engage with the female (10).

2. 2. The fastening structure according to claim 1, characterized in that the step portion (11) includes a horizontal engagement portion (12) and a slope portion (13), the horizontal engagement portion (12) is parallel to the positioning ring (31) of the female (10), the horizontal engagement portion (12) is connected to the positioning ring (31) of the female (10) via the slope portion (13), the horizontal engagement portion (12) is located on one side away from the bottom surface of the positioning ring (31) of the female (10), and the hook (21) engages with the horizontal engagement portion (12).

3. 2. The fastening structure according to claim 1, characterized in that the female (10) is provided with a pair of positioning rings (31) on both sides thereof, and the female (10) is integrally formed by bending an entire strip material.

4. The fastening structure according to claim 3, characterized in that an engagement opening (42) is formed between the positioning ring (31) of the male (20) and the hook (21), and a safety stopper (22) is provided on one side of the positioning ring (31) of the male (20) facing the hook (21).

5. The fastening structure according to claim 4, characterized in that the top of the safety stopper (22) is formed with an arc-shaped protrusion (23), and both sides are respectively formed with an arc-shaped smooth transition portion (24) together with the male positioning ring (31) and the hook (21) of the male (20).

6. 5. The fastening structure according to claim 4, wherein a curved portion (25) curved in a direction away from the engagement opening (42) is provided at the tip of the hook (21).

7. The fastening structure according to claim 6, characterized in that the tip of the hook (21) is bent toward the safety stopper (22), the rear end of the warped portion (25) forms a narrowed portion (43) in the engagement opening (42) together with the safety stopper (22), and the tip of the warped portion (25) forms an outwardly expanding guide portion (44) in the engagement opening (42) together with the positioning ring (31) of the male (20).

8. The fastening structure according to claim 4, characterized in that a pair of positioning rings (31) are provided on both sides of the male (20), and the male (20) is integrally formed by bending the entire strip material.

9. A back hook for underwear, comprising a first connecting belt (50), a second connecting belt (60), and the fastening structure according to any one of claims 1 to 8, A back hook for underwear, characterized in that the female (10) is provided on a first connecting belt (50) and the male (20) is provided on a second connecting belt (60).

10. 10. The back hook for underwear according to claim 9, characterized in that the females (10) are arranged in a plurality of rows in an array along the length direction of the first connecting belt (50), the females (10) are fixed to the first connecting belt (50) by a positioning ring (31) and a sewing machine, the first connecting belt (50) is made of a plurality of layers of fabric, the positioning ring (31) of the females (10) is covered within the fabric, the step portion (11) protrudes to the outside of the first connecting belt (50), and ultrasonic press spots (51) are provided at positions corresponding to the first connecting belt (50) and the step portion (11), and the males (20) are provided in a plurality of sets at intervals along the width direction of the second connecting belt (60), and the males (20) are fixed to the second connecting belt (60) by a positioning ring (31) and a sewing machine.

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