A concealed fastener

Abstract

This utility model relates to the field of concealed fasteners, providing a concealed fastener including a male fastener and a female fastener. The male fastener includes a first base plate and a first fastener seat disposed on the first base plate. The first fastener seat includes an upwardly protruding first ring seat, and the outer wall of the first ring seat has an annular groove. The female fastener includes a second base plate and a second fastener seat disposed on the second base plate. The second fastener seat includes an upwardly protruding second ring seat, and the top of the second ring seat is recessed inward to form a retaining ring with an opening decreasing from top to bottom. The retaining ring can be engaged in the annular groove, and the first and second fastener seats can be fixed to the fabric by hot melt adhesive. The base plate thickness of the male and female fasteners is less than 1.5mm, reducing the overall thickness and weight, resulting in almost no foreign body sensation when worn, improving comfort and reducing the weight of clothing. The fastener is hidden inside the fabric, significantly improving the aesthetics of the garment, and solving the technical problems of excessively thick fasteners affecting aesthetics, heavy buttons that may cause discomfort upon contact with the skin.

Description

Technical Field

[0001] This utility model relates to the field of invisible buckles, and more particularly to an invisible buckle. Background Technology

[0002] In existing button technology, traditional buttons typically employ a clamping method (such as sewing, riveting, or snap-on structures), resulting in a relatively large overall thickness. This structure easily comes into direct contact with the body when worn, creating a noticeable foreign body sensation and pressure, especially for underwear, which can easily cause skin irritation with prolonged wear. Simultaneously, the clamping structure increases the weight of the garment, and the exposed buttons detract from the overall aesthetics. Furthermore, traditional button fastening methods often rely on mechanical connections, which are prone to loosening and falling off due to frequent use or external impacts. While some buttons improve the user experience by adding anti-slip textures, limitations in materials and structural design still result in issues such as insecure fastening and easy wear. In existing technologies, it is difficult to simultaneously achieve the desired button thickness, fastening method, and aesthetics, becoming a key bottleneck restricting the improvement of button performance. Utility Model Content

[0003] Therefore, to address the aforementioned problems, this utility model proposes an invisible clasp. It solves the technical issues of clasps being too thick, affecting aesthetics, heavy, and potentially causing discomfort upon skin contact.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An invisible fastener includes a male fastener and a female fastener. The male fastener includes a first base piece and a first fastener seat disposed on the first base piece. The first fastener seat is located in the middle of the first base piece and includes an upwardly protruding first ring seat with an annular groove on its outer side wall. The female fastener includes a second base piece and a second fastener seat disposed on the second base piece. The second fastener seat is located in the middle of the second base piece and includes an upwardly protruding second ring seat. The top of the second ring seat is recessed inward to form a retaining ring with an opening decreasing from top to bottom. The retaining ring can be engaged in the annular groove. The thickness of the first base piece and the second base piece is less than 1.5 mm. The first fastener seat and the second fastener seat can be fixed to the fabric by hot melt adhesive.

[0006] Further:

[0007] The first buckle seat includes a first protruding ring located outside the first ring seat, and the second buckle seat includes a second protruding ring located outside the second ring seat. The first protruding ring and the second protruding ring are correspondingly arranged, and when the female buckle and the male buckle are fastened, there is a gap between the first protruding ring and the second protruding ring.

[0008] The first convex ring is located on the side edge of the first ring seat, and the second convex ring is located on the side edge of the second ring seat.

[0009] The first film has a first anti-slip part on its inner surface, and the second film has a second anti-slip part on its inner surface.

[0010] The first anti-slip part and the second anti-slip part include multiple protrusions.

[0011] The first film has a first through hole in the middle, and the second film has a second through hole in the middle.

[0012] The rear wall of the first buckle is provided with a first groove located in the first through hole, and the first through hole and the first groove form a stepped first anti-slip groove. The rear wall of the second buckle is provided with a second groove located in the second through hole, and the second through hole and the second groove form a stepped second anti-slip groove.

[0013] The outer wall of the retaining ring is inclined along the free end direction, and the thickness of the retaining ring decreases along the free end direction.

[0014] The thickness of the first film and the second film is no greater than 1 mm.

[0015] The first and second substrates are made of TPU material, and the first and second fasteners are made of POM material.

[0016] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0017] The base thickness of both the male and female buttons is less than 1.5mm (preferably less than 1mm), and they are directly fixed to the fabric with hot melt adhesive, eliminating the need for traditional top and bottom clamping structures. This significantly reduces the overall thickness and weight of the buttons, resulting in almost no foreign body sensation when worn, improving comfort and reducing the weight of clothing. Simultaneously, the buttons are hidden inside the fabric, making them virtually invisible from the outside, significantly enhancing the garment's aesthetics. The snap-fit ​​structure of the locking ring and groove, combined with the inclined design of the annular groove wall, ensures a tight fit and prevents them from easily falling off. Furthermore, the raised anti-slip parts on the inner surface of the base enhance the friction between the base and the hand, preventing the buttons from slipping off. The design features a sliding mechanism to enhance stability and reliability. Furthermore, the stepped anti-slip groove structure strengthens the fastening while increasing friction between the hand and the fastener during engagement, preventing slippage and facilitating closure. Additionally, the TPU backing material improves elasticity, making it flexible and allowing users to easily release the fastener using two fingers. The POM fastener base balances elasticity and structural durability, extending service life and enhancing the fastening effect. The combination of the TPU backing and POM fastener base achieves a balance between lightweight design and flexibility while maintaining fastening strength. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the concealed buckle of this utility model.

[0019] Figure 2 This is a structural diagram of a button.

[0020] Figure 3 This is a structural diagram of the buckle from another angle.

[0021] Figure 4 This is a structural diagram of the female buckle.

[0022] Figure 5 This is a structural diagram of the female buckle from another angle.

[0023] Figure 6 This is a simplified cross-sectional view of the invisible clasp.

[0024] Figure label:

[0025] 1. Female buckle; 11. First base plate; 110. First anti-slip part; 111. First through hole; 12. First buckle seat; 121. First ring seat; 122. Ring groove; 123. First convex ring; 124. First groove body; 2. Female buckle; 21. Second base plate; 210. Second anti-slip part; 211. Second through hole; 22. Second buckle seat; 221. Second ring seat; 222. Locking ring; 223. Second convex ring; 224. Second groove body. Detailed Implementation

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0027] refer to Figures 1 to 6 This embodiment provides an invisible fastener, including a female fastener 1 and a female fastener 2. The female fastener 1 includes a first base plate 11 and a first fastener seat 12 disposed on the first base plate 11. The first fastener seat 12 is located in the middle of the first base plate 11 and includes an upwardly protruding first ring seat 121. The outer wall of the first ring seat 121 has an annular groove 122. The female fastener 2 includes a second base plate 21 and a second fastener seat 22 disposed on the second base plate 21. The second fastener seat 22 is located in the middle of the second base plate 21 and includes an upwardly protruding second ring seat 221. The top of the second ring seat 221 is recessed inward to form a retaining ring 222 with an opening decreasing from top to bottom. The retaining ring 222 can be retained in the annular groove 122. The thickness of the first base plate 11 and the second base plate 21 is less than 1.5 mm. The first fastener seat 12 and the second fastener seat 22 can be fixed to the fabric by hot melt adhesive.

[0028] In one embodiment, the first buckle seat 12 includes a first protruding ring 123 located outside the first ring seat 121, and the second buckle seat 22 includes a second protruding ring 223 located outside the second ring seat 221. The first protruding ring 123 and the second protruding ring 223 are correspondingly arranged. When the female buckle 1 and the female buckle 2 are fastened, there is a gap between the first protruding ring 123 and the second protruding ring 223.

[0029] In this structure, the first protruding ring 123 and the second protruding ring 223 can enhance the strength of the first buckle 12 and the second buckle 22, and there is a gap between them, which has a certain buffering effect.

[0030] In one embodiment, the first protruding ring 123 is located on the side edge of the first ring seat 121, and the second protruding ring 223 is located on the side edge of the second ring seat 221.

[0031] In one embodiment, the inner surface of the first substrate 11 is provided with a first anti-slip part 110, and the inner surface of the second substrate 21 is provided with a second anti-slip part 210.

[0032] In one embodiment, the first anti-slip portion 110 and the second anti-slip portion 210 include a plurality of protrusions.

[0033] The first anti-slip part 110 and the second anti-slip part 210 mentioned above can also be anti-slip strips or other anti-slip structures, depending on the specific situation.

[0034] In one embodiment, a first through hole 111 is provided in the middle of a first base plate 11, and a second through hole 211 is provided in the middle of a second base plate 21. A first groove 124 is provided on the rear wall of a first buckle 12 located within the first through hole 111, and the first through hole 111 and the first groove 124 form a stepped first anti-slip groove. A second groove 224 is provided on the rear wall of a second buckle 22 located within the second through hole 211, and the second through hole 211 and the second groove 224 form a stepped second anti-slip groove.

[0035] In one embodiment, the outer wall of the retaining ring 222 is inclined along the free end direction, and the thickness of the retaining ring 222 decreases along the free end direction.

[0036] In one embodiment, the thickness of the first film 11 and the second film 21 is no greater than 1 mm.

[0037] In one embodiment, the first substrate 11 and the second substrate 21 are made of TPU material, and the first fastener 12 and the second fastener 22 are made of POM material.

[0038] The first negative 11 and the second negative 21 mentioned above can also be made of other materials, depending on the specific circumstances.

[0039] The working principle of this utility model is as follows:

[0040] When the invisible buckle is installed on the fabric, the first buckle seat 12 passes through the installation hole in the fabric. The first buckle seat 12 and the second buckle seat 22 can be fixed to the fabric with hot melt adhesive, which greatly reduces the overall thickness and weight of the buckle. When wearing it, there is almost no foreign body sensation, which improves comfort and reduces the weight of the garment. The buckle is hidden inside the fabric and is almost invisible from the outside, which significantly improves the appearance of the garment. When fastening, the fingers are positioned in the stepped first anti-slip groove and the second anti-slip groove to fasten the buckle, which does not easily slip. Pressing makes the locking ring 222 lock into the ring groove 122. When unfastening, the first base plate 11 and the second base plate 21 are moved. Two fingers hold the first base plate 11 and the second base plate 21 respectively and pull to separate the female buckle 1 and the female buckle 2.

[0041] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A concealed clasp, characterized in that: The device includes a male fastener and a female fastener. The male fastener includes a first base piece and a first fastener seat disposed on the first base piece. The first fastener seat is located in the middle of the first base piece and includes an upwardly protruding first ring seat with an annular groove on its outer side wall. The female fastener includes a second base piece and a second fastener seat disposed on the second base piece. The second fastener seat is located in the middle of the second base piece and includes an upwardly protruding second ring seat with its top recessed inward to form a retaining ring with an opening decreasing from top to bottom. The retaining ring can be engaged in the annular groove. The thickness of the first base piece and the second base piece is less than 1.5 mm. The first fastener seat and the second fastener seat can be fixed to the fabric by hot melt adhesive.

2. The invisible clasp according to claim 1, characterized in that: The first buckle seat includes a first protruding ring located outside the first ring seat, and the second buckle seat includes a second protruding ring located outside the second ring seat. The first protruding ring and the second protruding ring are correspondingly arranged, and when the female buckle and the male buckle are fastened, there is a gap between the first protruding ring and the second protruding ring.

3. The invisible clasp according to claim 2, characterized in that: The first convex ring is located on the side edge of the first ring seat, and the second convex ring is located on the side edge of the second ring seat.

4. The invisible clasp according to claim 1, characterized in that: The first film has a first anti-slip part on its inner surface, and the second film has a second anti-slip part on its inner surface.

5. The invisible clasp according to claim 4, characterized in that: The first anti-slip part and the second anti-slip part include multiple protrusions.

6. The invisible clasp according to claim 1, characterized in that: The first film has a first through hole in the middle, and the second film has a second through hole in the middle.

7. The invisible clasp according to claim 6, characterized in that: The rear wall of the first buckle is provided with a first groove located in the first through hole, and the first through hole and the first groove form a stepped first anti-slip groove. The rear wall of the second buckle is provided with a second groove located in the second through hole, and the second through hole and the second groove form a stepped second anti-slip groove.

8. The invisible clasp according to claim 1, characterized in that: The outer wall of the retaining ring is inclined along the free end direction, and the thickness of the retaining ring decreases along the free end direction.

9. The invisible clasp according to claim 1, characterized in that: The thickness of the first film and the second film is no greater than 1 mm.

10. A concealed clasp according to any one of claims 1 to 9, characterized in that: The first and second substrates are made of TPU material, and the first and second fasteners are made of POM material.

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