Snap fastener type traceless back fastener

Abstract

The utility model provides a snap-fastener type traceless back fastener, which comprises a female fastener and a male fastener, the female fastener comprises a circle of base cloth, a piece of perforated cloth and at least one concave fastener seat, the concave fastener seat is provided with a fastener ring and a buckle inserting opening defined by the fastener ring, the perforated cloth is provided with at least one fastener ring hole, and the male fastener is provided with at least one buckle inserting opening defined by the fastener ring hole. The ring bottom cloth and the perforated cloth are bonded with each other, the concave buckle seat is arranged between the ring bottom cloth and the perforated cloth, the buckle ring extends out of the buckle ring hole, the male buckle piece comprises inserting bottom cloth, inserting hole cloth and at least one convex buckle seat, the convex buckle seat is provided with a seat bottom plate and a convex column extending outwards from the seat bottom plate, and the convex column is provided with a convex hole. The inserting hole cloth is provided with at least one convex column hole, the inserting bottom cloth and the perforated cloth are bonded with each other, the convex buckle seat is arranged between the inserting bottom cloth and the inserting hole cloth, the convex column extends out of the convex column hole, and the male buckle piece and the female buckle piece are suitable for being buckled with each other in the state that the convex column is inserted into the inserting buckle opening.

Description

Technical Field

[0001] The utility model relates to the field of underwear accessories, and particularly relates to a snap-type seamless back buckle. Background Art

[0002] As a kind of clothing, bras have become one of the indispensable important clothes for modern people. The most common wearing method of existing bras is the back-fastening type. Specifically, the back buckle of a back-fastening bra includes a hook part and a loop part. The hook part and the loop part are respectively sewn on the two back straps of the bra. The wearer wears and fixes the bra by engaging the hook part and the loop part. The hook part is provided with a row of hooks, and the loop part is provided with several rows of loops. The wearer can adjust the tightness of wearing the bra by engaging the hooks of the hook part with different rows of loops of the loop part.

[0003] With the continuous improvement of people's living standards, people not only pursue the practicality and functionality of bras, but also pay more attention to the beauty and comfort of bras. In recent years, seamless and comfortable styles of underwear have been deeply loved by consumers. The reason is that this kind of underwear is simple and comfortable, and has good wearing comfort in daily wear. Moreover, most of the cups of this kind of underwear adopt a smooth surface design. When the wearer wears thin and tight clothes, the outline of the underwear will not protrude from the outer clothes, so as to avoid embarrassing the wearer and giving the wearer a good wearing experience. However, it is not enough for seamless underwear to achieve seamless only in the cup, shoulder strap and back strap parts. Since the back buckle bears the loops and the hooks, especially for the loop part, the side bearing the loops faces away from the wearer. When the wearer wears thin and tight clothes, the clothes will stick tightly to the loops, so the outline of the back buckle will be drawn on the outer clothes. Moreover, when the hook is engaged with the loop, not only will the thickness of the back buckle be highlighted due to the superposition of the hook part and the loop part, but the structural form of the hook will also cause a gap between the hook part and the loop part, further expanding the thickness of the back buckle, resulting in the back buckle protruding from the outer clothes.

[0004] That is to say, the traditional back buckle design causes the current seamless and comfortable style of underwear to only achieve the seamless effect in the cup, shoulder strap and back strap parts. The back buckle still protrudes from the outer clothes, and will also draw obvious back buckle outlines and structures on the outer clothes, unable to achieve a flat effect. Therefore, it is difficult for the current seamless style of underwear to be seamless as a whole and cannot meet the actual needs of consumers. Content of the Utility Model

[0005] An object of the present utility model is to provide a snap - type seamless back buckle, wherein the snap - type seamless back buckle breaks through the morphological design of traditional lingerie back buckles, tends to be planar as a whole, and has a seamless morphological effect.

[0006] Another object of the present utility model is to provide a snap - type seamless back buckle, wherein the snap - type seamless back buckle includes a female fastener and a male fastener. In a state where the female fastener and the male fastener are mutually fastened, the female fastener and the male fastener approach each other, and the thickness of the snap - type seamless back buckle can be reduced.

[0007] Another object of the present utility model is to provide a snap - type seamless back buckle, wherein the snap - type seamless back buckle adopts a pressing connection method, which is convenient for the wearer to operate.

[0008] Another object of the present utility model is to provide a snap - type seamless back buckle, wherein the snap - type seamless back buckle is convenient for the wearer to identify the corresponding buckling positions by touch and distinguish the connection situation during blind operation, so that the wearer can accurately grasp the connection situation of the back buckle.

[0009] Another object of the present utility model is to provide a snap - type seamless back buckle, wherein the snap - type seamless back buckle can reduce the number of fabric layers, which is beneficial to the overall lightness and thinness, so as to better ensure the overall seamless effect of the lingerie. And based on the reduction of the number of fabric layers, the breathability of the snap - type seamless back buckle can also be improved.

[0010] Another object of the present utility model is to provide a snap - type seamless back buckle, wherein the female fastener includes a circular bottom cloth, a perforated cloth, and at least one concave buckle seat. The concave buckle seat has a buckle ring and an insertion buckle opening defined by the buckle ring. The perforated cloth has at least one buckle ring hole corresponding to the number of the concave buckle seats. The circular bottom cloth and the perforated cloth are adhesively bonded to each other. The concave buckle seat is arranged between the circular bottom cloth and the perforated cloth, and the buckle ring extends out from the buckle ring hole to form a position positioning and insertion position on the surface of the female fastener, which is convenient for the wearer to fasten the male fastener to the female fastener.

[0011] Another object of the present utility model is to provide a snap - type seamless back buckle, wherein the male fastener includes an insertion bottom cloth, a jack cloth, and at least one convex buckle seat. The convex buckle seat has a seat bottom plate and a convex column protruding and extending outward from the seat bottom plate. The jack cloth has at least one convex column hole corresponding to the number of the convex buckle seats. The insertion bottom cloth and the perforated cloth are adhesively bonded to each other. The convex buckle seat is arranged between the insertion bottom cloth and the jack cloth, and the convex column extends out from the convex column hole to form a protruding insertion column on the surface of the male fastener. The male fastener and the female fastener are mutually fastened in a state where the convex column is inserted into the insertion buckle opening.

[0012] Another object of the present utility model is to provide a snap - type seamless back buckle. When the male fastener and the female fastener are engaged with each other with the convex post inserted into the buckle ring, the protruding dimension of the convex post is inserted into the buckle ring. Therefore, the protruding dimension of the convex post will not be increased between the male fastener and the female fastener, which is beneficial to reducing the thickness when the male fastener and the female fastener are stacked, and improving the seamless effect of the snap - type seamless back buckle.

[0013] Another object of the present utility model is to provide a snap - type seamless back buckle. Based on the structural forms of the male fastener and the female fastener, the wearer only needs to insert the convex post downward into the buckle insertion opening to complete the engagement between the male fastener and the female fastener. Compared with the engagement operation of the hook and the loop of the traditional back buckle, the operation is simpler, which is more conducive to the wearer's blind operation on the back and convenient for the wearer to wear the corresponding underwear.

[0014] Another object of the present utility model is to provide a snap - type seamless back buckle. The notch seat includes a buckle ring seat, and the buckle ring extends outwardly from the buckle ring seat. When the bottom cloth of the ring and the perforated cloth are bonded, the buckle ring seat is bonded between the bottom cloth of the ring and the perforated cloth, and the buckle ring extends out from the perforation, so that the notch seat can be fixed between the bottom cloth of the ring and the perforated cloth.

[0015] Another object of the present utility model is to provide a snap - type seamless back buckle. The female fastener clamps and bonds the concave buckle seat between the bottom cloth of the ring and the perforated cloth through the bonding of the bottom cloth of the ring and the perforated cloth, and the male fastener clamps and bonds the convex buckle seat between the bottom cloth of the insertion and the perforated cloth of the insertion through the bonding of the bottom cloth of the insertion and the perforated cloth of the insertion. Then, the female fastener and the male fastener only include two single - layer fabrics, which is beneficial to the overall thinning of the female fastener and the male fastener, so as to better ensure the overall seamless effect of the underwear, and also improve the air permeability of the snap - type seamless back buckle based on the reduction of the number of fabric layers.

[0016] Another object of the present utility model is to provide a snap - type seamless back buckle. The buckle ring seat is provided with a hollowed - out portion at the buckle insertion opening, that is, the area of the buckle ring seat surrounded by the buckle ring is hollowed out, so as to increase the depth of insertion of the convex post into the buckle insertion opening. In the state where the male fastener and the female fastener are engaged with each other, the male fastener and the female fastener can approach each other to reduce the gap between the male fastener and the female fastener, so as to reduce the thickness of the male fastener and the female fastener when they are stacked, and reduce the thickness of the snap - type seamless back buckle.

[0017] Another object of the present utility model is to provide a snap - type seamless back buckle, wherein the buckle ring is arranged in an elliptical shape so that when the convex post is inserted into the buckle ring, the limiting of the convex post can be enhanced based on the oval area formed by the winding of the elliptical - shaped buckle ring, ensuring the buckling stability and firmness between the male fastener and the female fastener, and enhancing the wearing sense of security of the wearer.

[0018] Another object of the present utility model is to provide a snap - type seamless back buckle, wherein the convex post is arranged in an umbrella shape and includes a convex handle extending upward from the base and a convex cover disposed at the upper end of the convex handle, wherein the cross - sectional area of the convex cover is larger than that of the convex handle, so that when the convex post is inserted into the buckle ring, the lower end of the convex cover can abut against the buckle ring to form anti - detachment limiting of the convex post, further ensuring the buckling stability and firmness between the male fastener and the female fastener, and enhancing the wearing sense of security of the wearer.

[0019] Another object of the present utility model is to provide a snap - type seamless back buckle, wherein the concave buckle seat and the convex buckle seat are made of soft plastic material to enhance the overall softness of the male fastener and the female fastener, improve the comfort of the snap - type seamless back buckle, and enable the snap - type seamless back buckle not to be provided with metal parts, so that the wearer can wear corresponding underwear in specific scenarios, such as some security checks, medical equipment inspections and other scenarios where the wearer needs to avoid wearing metal, thus avoiding embarrassing emotions of the wearer.

[0020] According to one aspect of the present utility model, the present utility model provides a snap - type seamless back buckle, wherein the snap - type seamless back buckle includes:

[0021] A female fastener, wherein the female fastener includes a bottom cloth loop, a perforated cloth, and at least one concave buckle seat. The concave buckle seat has a buckle ring and an insertion buckle opening defined by the buckle ring. The perforated cloth has at least one buckle ring hole corresponding to the number of the concave buckle seats. The bottom cloth loop and the perforated cloth are adhesively bonded to each other. The concave buckle seat is disposed between the bottom cloth loop and the perforated cloth, and the buckle ring extends out from the buckle ring hole; and

[0022] A male fastener, wherein the male fastener includes an insertion bottom cloth, a jack cloth, and at least one convex buckle seat. The convex buckle seat has a base plate and a convex post protruding outward from the base plate. The jack cloth has at least one convex post hole corresponding to the number of the convex buckle seats. The insertion bottom cloth and the perforated cloth are adhesively bonded to each other. The convex buckle seat is disposed between the insertion bottom cloth and the jack cloth, and the convex post extends out from the convex post hole. The male fastener and the female fastener are adapted to be buckled with each other in a state where the convex post is inserted into the insertion buckle opening.

[0023] In one embodiment, the notch seat includes a snap ring seat, the snap ring extends outwardly from the snap ring seat, in the state where the bottom cloth of the ring and the perforated cloth are bonded, the snap ring seat is bonded between the bottom cloth of the ring and the perforated cloth, and the snap ring extends out from the perforation.

[0024] In one embodiment, the snap ring seat is provided with a hollow at the insertion snap opening.

[0025] In one embodiment, the snap ring is arranged in an elliptical shape.

[0026] In one embodiment, the insertion snap opening has a diameter that gradually narrows in the extending direction of the snap ring.

[0027] In one embodiment, the convex post is arranged in an umbrella shape and includes a convex handle extending upward from the base and a convex cover arranged at the upper end of the convex handle, wherein the cross-sectional area of the convex cover is larger than the cross-sectional area of the convex handle.

[0028] In one embodiment, the female snap seat and the male snap seat are made of soft plastic material.

[0029] In one embodiment, the female fastener only includes two layers of fabrics, namely the bottom cloth of the ring and the perforated cloth, and the male fastener only includes two layers of fabrics, namely the insertion bottom cloth and the insertion hole cloth.

[0030] In one embodiment, the female fastener includes a first adhesive film and a second adhesive film. The first adhesive film is arranged on the side of the bottom cloth of the ring facing the perforated cloth, and the second adhesive film is arranged on the side of the perforated cloth facing the bottom cloth of the ring, and the bottom cloth of the ring, the female snap seat and the perforated cloth are bonded based on a hot pressing and melting process.

[0031] In one embodiment, the male fastener includes a first adhesive film and a second adhesive film. The first adhesive film is arranged on the side of the insertion bottom cloth facing the insertion hole cloth, and the second adhesive film is arranged on the side of the insertion hole cloth facing the insertion bottom cloth, and the insertion bottom cloth, the male snap seat and the insertion hole cloth are bonded based on a hot pressing and melting process.

[0032] Through the understanding of the subsequent description and the drawings, the further objects and advantages of the present utility model will be fully reflected. Description of the Drawings

[0033] Figure 1 It is a schematic structural diagram of a female fastener of a snap - type seamless back snap according to an embodiment of the present utility model.

[0034] Figure 2 It is an exploded structural diagram of the female fastener according to the above - mentioned embodiment of the present utility model.

[0035] Figure 3 It is a schematic structural view of a concave socket of the female fastener according to the above-mentioned embodiment of the present utility model.

[0036] Figure 4 It is a schematic structural view of a male fastener of the snap - type traceless back fastener according to the above - mentioned embodiment of the present utility model.

[0037] Figure 5 It is an exploded schematic structural view of the male fastener according to the above - mentioned embodiment of the present utility model.

[0038] Figure 6 It is a schematic structural view of a convex socket of the male fastener according to the above - mentioned embodiment of the present utility model.

[0039] Figure 7 It is a schematic cross - sectional structural view of the snap - type traceless back fastener in a state where the female fastener and the male fastener are engaged according to the above - mentioned embodiment of the present utility model.

[0040] Figure 8 It is an application schematic view of the snap - type traceless back fastener according to the above - mentioned embodiment of the present utility model. Detailed implementation manners

[0041] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description can be applied to other implementation schemes, variant schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present utility model.

[0042] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present utility model.

[0043] It can be understood that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "a" should not be construed as limiting the quantity.

[0044] Referring to the accompanying drawings of the specification of the present utility modelFigures 1 to 8 As shown, the structure of a snap - type seamless back clasp 100 according to an embodiment of the present utility model and the application scenario of the snap - type seamless back clasp 100 are respectively schematically shown. Among them, the snap - type seamless back clasp 100 breaks through the traditional way of connecting the back clasp of an undergarment by engaging steel rings, and innovatively adopts a pressing - type operation method for connection, improving the connection convenience and seamless aesthetic degree of the back clasp.

[0045] Specifically, the snap - type seamless back clasp 100 includes a female fastener 10 and a male fastener 20. The female fastener 10 and the male fastener 20 are adapted to be connected to the left and right side straps 200 of the corresponding undergarment respectively, and the male fastener 20 is adapted to be snapped onto the female fastener 10 to realize the connection of the two straps 200.

[0046] Detailed reference Figures 1 to 3 , where the female fastener 10 includes a circular bottom cloth 11, a perforated cloth 13, and at least one concave snap base 12. The concave snap base 12 has a snap ring 121 and an insertion snap opening 122 defined by the snap ring 121. The perforated cloth 13 has at least one snap - ring hole 131 corresponding to the number of the concave snap bases 121. The circular bottom cloth 11 and the perforated cloth 13 are adhesively bonded to each other. The concave snap base 12 is disposed between the circular bottom cloth 11 and the perforated cloth 13, and the snap ring 121 extends out from the snap - ring hole 131 to form a position - positioning and insertion position on the surface of the female fastener 10, facilitating the wearer to snap the male fastener 20 onto the female fastener 10.

[0047] Detailed reference Figures 4 to 6 , where the male fastener 20 includes an insertion bottom cloth 21, a jack - hole cloth 23, and at least one convex snap base 22. The convex snap base 22 has a base plate 221 and a convex column 222 extending outwardly from the base plate 221. The jack - hole cloth 23 has at least one convex - column hole 231 corresponding to the number of the convex snap bases 22. The insertion bottom cloth 21 and the perforated cloth 23 are adhesively bonded to each other. The convex snap base 231 is disposed between the insertion bottom cloth 21 and the jack - hole cloth 23, and the convex column 222 extends out from the convex - column hole 231 to form a protruding insertion column on the surface of the male fastener 20. As Figure 7 shown, the male fastener 20 and the female fastener 10 are snapped together with the convex column 222 inserted into the insertion snap opening 122.

[0048] Reference Figure 7As shown, when the male fastener 20 and the female fastener 10 are engaged with each other with the convex post 222 inserted into the snap ring 121, the protruding dimension of the convex post 222 is inserted into the snap ring 121. Therefore, the protruding dimension of the convex post 222 will not increase between the male fastener 20 and the female fastener 10, which is beneficial to reducing the thickness when the male fastener 20 and the female fastener 10 are stacked, and improving the traceless effect of the snap-type traceless back fastener 100.

[0049] It is worth mentioning that based on the structural forms of the male fastener 20 and the female fastener 10, the wearer only needs to insert the convex post 222 downward into the snap opening 122 to complete the engagement between the male fastener 20 and the female fastener 10. Compared with the engagement operation of the hook and the loop of the traditional back fastener, it is more convenient. Refer to Figure 8 As shown, during the process of the wearer wearing the underwear, it is more beneficial to blindly operate behind the back to engage the male fastener 20 with the female fastener 10, facilitating the wearer to wear the corresponding underwear.

[0050] Refer to Figure 3 As shown, the notch seat 12 includes a snap ring seat 123. The snap ring 121 extends outwardly from the snap ring seat 123. In the state where the bottom cloth 11 of the loop and the perforated cloth 13 are bonded, the snap ring seat 123 is bonded between the bottom cloth 11 of the loop and the perforated cloth 13, and the snap ring 121 extends out from the perforation 131, so that the notch seat 12 can be fixed between the bottom cloth 11 of the loop and the perforated cloth 13.

[0051] Further refer to Figure 3 and Figure 7 As shown, the snap ring seat 123 is provided with a hollowed-out portion at the snap opening 122, that is, the area of the snap ring seat 123 surrounded by the snap ring 121 is hollowed out, so as to increase the depth of insertion of the convex post 222 into the snap opening 122. Corresponding to Figure 7 As shown, in the state where the convex post 222 is inserted into the snap opening 122, the convex post 222 can abut against the bottom cloth 11 of the loop, so as to improve the approaching degree between the male fastener 20 and the female fastener 10 in the state where the male fastener 20 and the female fastener 10 are engaged with each other, reduce the gap between the male fastener 20 and the female fastener 10, reduce the thickness when the male fastener 20 and the female fastener 10 are stacked, and reduce the thickness of the snap-type traceless back fastener 100.

[0052] Specifically, as Figure 8As shown, when the wearer fastens the male fastener 20 and the female fastener 10, since the stacked thickness of the male fastener 20 and the female fastener 10 is reduced, the snap - type seamless back buckle 100 will not protrude significantly from the strap 200. Therefore, when the wearer wears a tight outer garment, the snap - type seamless back buckle 100 will not protrude from the outer garment either, thus enhancing the overall seamless effect of the corresponding underwear.

[0053] Specifically, the buckle ring 121 is arranged in an elliptical shape so that when the convex post 222 is inserted into the buckle ring 121, the limiting of the convex post 222 can be enhanced based on the oval area formed by the winding of the elliptical - shaped buckle ring 121, ensuring the buckling stability and firmness of the male fastener 20 and the female fastener 10, and enhancing the wearing sense of security of the wearer.

[0054] Further refer to Figure 6 and Figure 7 , where the convex post 222 is arranged in an umbrella shape and includes a convex handle 2221 extending upward from the base 221 and a convex cover 2222 arranged at the upper end of the convex handle 2221. The cross - sectional area of the convex cover 2222 is larger than that of the convex handle 2221. When the convex post 222 is inserted into the buckle ring 121, the lower end of the convex cover 2222 can abut against the buckle ring 121 to form anti - detachment limiting of the convex post 222, further ensuring the buckling stability and firmness of the male fastener 20 and the female fastener 10, and enhancing the wearing sense of security of the wearer.

[0055] It is worth mentioning that referring to Figure 7 as shown, the insertion buckle opening 122 has a diameter that gradually narrows in the extending direction of the buckle ring 121, so that when the convex post 222 is inserted into the buckle ring 121, anti - detachment limiting of the convex post 222 is formed, further ensuring the buckling stability and firmness of the male fastener 20 and the female fastener 10, and enhancing the wearing sense of security of the wearer.

[0056] Specifically, based on the structural design that the insertion buckle opening 122 has a diameter that gradually narrows in the extending direction of the buckle ring 121 and the umbrella - shaped structure of the convex post 222, when the convex post 222 is inserted into the insertion buckle opening 122, the convex post 222 inserts into the insertion buckle opening 122 with a smaller - sized end into the insertion buckle opening 122 with a gradually increasing diameter. Therefore, the force for the wearer to fasten the male fastener 20 and the female fastener 10 can be reduced, facilitating the operation of the wearer. After the convex post 222 is inserted into the insertion buckle opening 122, the convex post 222 has a strong limiting resistance when pulling out from the insertion buckle opening 122 with a gradually narrowing diameter. Therefore, during the daily wearing of the wearer, the male fastener 20 and the female fastener 10 can be limited and guaranteed when they are buckled with each other.

[0057] Specifically, the concave snap base 12 and the convex snap base 22 are made of soft plastic material to improve the overall softness of the male fastener 20 and the female fastener 10, enhance the comfort of the snap - type seamless back fastener 100, and enable the snap - type seamless back fastener 100 not to be provided with metal components. This allows the wearer to wear the corresponding underwear in specific scenarios, such as some security checks, medical equipment inspections, etc., where it is necessary to avoid the wearer wearing metal, thus avoiding embarrassing emotions for the wearer.

[0058] It is worth mentioning that the female fastener 10 clamps and bonds the concave snap base 12 between the loop bottom cloth 11 and the perforated cloth 13 through the adhesion of the loop bottom cloth 11 and the perforated cloth 13. The male fastener 20 clamps and bonds the convex snap base 22 between the insert bottom cloth 21 and the jack cloth 23 through the adhesion of the insert bottom cloth 21 and the jack cloth 23. Then the female fastener 10 only includes two layers of fabrics, namely the loop bottom cloth 11 and the perforated cloth 13, and the male fastener 20 only includes two layers of fabrics, namely the insert bottom cloth 21 and the jack cloth 23. This is beneficial to the overall thinning of the female fastener 10 and the male fastener 20, thereby better ensuring the overall seamless effect of the underwear, and also improving the breathability of the snap - type seamless back fastener 100 based on the reduction of the number of fabric layers.

[0059] Specifically, referring to Figure 2 As shown, the female fastener 10 includes the loop bottom cloth 11, the perforated cloth 13, and the concave snap base 12. One side of the loop bottom cloth 11 facing the perforated cloth 13 bears a first adhesive film, and one side of the perforated cloth 13 facing the loop bottom cloth 11 bears a second adhesive film. After stacking the perforated cloth 13, the concave snap base 12, and the loop bottom cloth 11, the first adhesive film and the second adhesive film bond the loop bottom cloth 11, the concave snap base 12, and the perforated cloth 13 based on the hot - pressing and hot - melting process.

[0060] Referring to Figure 5 As shown, the male fastener 20 includes the insert bottom cloth 21, the jack cloth 23, and the convex snap base 22. One side of the insert bottom cloth 21 facing the jack cloth 23 bears a first adhesive film, and one side of the jack cloth 23 facing the insert bottom cloth 21 bears a second adhesive film. After stacking the jack cloth 23, the convex snap base 22, and the insert bottom cloth 21, the first adhesive film and the second adhesive film bond the insert bottom cloth 21, the convex snap base 22, and the jack cloth 23 based on the hot - pressing and hot - melting process. It can be understood that the first adhesive film can be hot - pressed on the loop bottom cloth 11 and the insert bottom cloth 21 first, and the second adhesive film can be hot - pressed on the perforated cloth 13 and the jack cloth 23 first.

[0061] It is worth mentioning that both the female fastener 10 and the male fastener 20 only include two layers of single-layer fabrics. Therefore, the thicknesses of the female fastener 10 and the male fastener 20 are relatively small. Referring to Figure 8 as shown, when the female fastener 10 and the male fastener 20 are connected to the strap 200, they approach the thickness of the strap 200. When the wearer fastens the male fastener 20 and the female fastener 10, the stacked thickness of the male fastener 20 and the female fastener 10 is also relatively thin. The snap-type seamless back buckle 100 does not protrude significantly from the strap 200. Therefore, when the wearer wears a tight outer garment, the snap-type seamless back buckle 100 will not protrude from the outer garment either, thus enhancing the overall seamless effect of the corresponding underwear.

[0062] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0063] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The object of the present invention has been fully and effectively achieved. The function and structural principle of the present invention have been shown and explained in the embodiments. Without departing from the principle, the embodiments of the present invention can have any deformation or modification.

Claims

1. Snap - type seamless back buckle, characterized in that, Comprising: A female fastener, wherein the female fastener includes a circular base cloth, a perforated cloth, and at least one concave fastener seat. The concave fastener seat has a buckle ring and an insertion buckle opening defined by the buckle ring. The perforated cloth has at least one buckle ring hole corresponding to the number of the concave fastener seats. The circular base cloth and the perforated cloth are adhesively bonded to each other. The concave fastener seat is disposed between the circular base cloth and the perforated cloth, and the buckle ring extends out from the buckle ring hole; and A male fastener, wherein the male fastener includes an insertion base cloth, a jack cloth, and at least one convex fastener seat. The convex fastener seat has a seat bottom plate and a convex column protruding and extending outward from the seat bottom plate. The jack cloth has at least one convex column hole corresponding to the number of the convex fastener seats. The insertion base cloth and the perforated cloth are adhesively bonded to each other. The convex fastener seat is disposed between the insertion base cloth and the jack cloth, and the convex column extends out from the convex column hole. The male fastener and the female fastener are adapted to be buckled with each other in a state where the convex column is inserted into the insertion buckle opening.

2. The snap - type seamless back buckle according to claim 1, wherein the notch seat includes a buckle ring seat, the buckle ring protrudes and extends outward from the buckle ring seat. In a state where the circular base cloth and the perforated cloth are adhesively bonded, the buckle ring seat is adhesively bonded between the circular base cloth and the perforated cloth, and the buckle ring extends out from the perforation.

3. The snap - type seamless back buckle according to claim 2, wherein the buckle ring seat is hollowed out at the insertion buckle opening.

4. The snap - type seamless back buckle according to claim 3, wherein the buckle ring is arranged in an elliptical shape.

5. The snap - type seamless back buckle according to claim 4, wherein the insertion buckle opening has a diameter that gradually decreases in the extending direction of the buckle ring.

6. The snap - type seamless back buckle according to claim 5, wherein the convex column is arranged in an umbrella shape and includes a convex handle extending upward from the base and a convex cover arranged at the upper end of the convex handle, and the cross - sectional area of the convex cover is larger than the cross - sectional area of the convex handle.

7. The snap - type seamless back buckle according to any one of claims 1 to 6, wherein the concave fastener seat and the convex fastener seat are made of soft plastic material.

8. The snap - type seamless back buckle according to claim 7, wherein the female fastener only includes two layers of fabrics, namely the circular base cloth and the perforated cloth, and the male fastener only includes two layers of fabrics, namely the insertion base cloth and the jack cloth.

9. The snap - type seamless back buckle according to claim 8, wherein the female fastener includes a first adhesive film and a second adhesive film. The first adhesive film is disposed on the side of the circular base cloth facing the perforated cloth, and the second adhesive film is disposed on the side of the perforated cloth facing the circular base cloth, and the circular base cloth, the concave fastener seat, and the perforated cloth are adhesively bonded based on a hot - melt pressing process.

10. The snap-type seamless back buckle according to claim 8, wherein the male fastener includes a first adhesive film and a second adhesive film, wherein the first adhesive film is disposed on a surface of the inserting base cloth facing the inserting hole cloth, the second adhesive film is disposed on a surface of the inserting hole cloth facing the inserting base cloth, and the inserting base cloth, the convex buckle seat and the inserting hole cloth are bonded based on a hot pressing and hot melting process.

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