Snap fastener

Abstract

The utility model relates to a snap fastener which comprises a male fastener component and a female fastener component, the male fastener component comprises a male fastener base body and a clamping protrusion protruding outwards from the male fastener base body, the circumferential surface of the clamping protrusion is a first conical surface, and the first conical surface gradually shrinks from one end close to the male fastener base body to the other end in the radial direction. The inclination of the first conical surface is kept consistent in the axial direction of the first conical surface, the female buckle component comprises a female buckle base body and a clamping groove formed in the female buckle base body, the clamping groove sequentially comprises a guide-in groove part and a limiting groove part in the direction from a groove opening to the groove bottom, and the circumferential groove wall of the guide-in groove part is a second conical surface; the second conical surface gradually shrinks in the radial direction from the notch of the clamping groove to the bottom of the clamping groove, and the inclination of the second conical surface is kept consistent in the direction from the notch of the clamping groove to the bottom of the clamping groove. According to the snap fastener, sudden change of force in the buckling and unbuckling process of the snap fastener can be avoided, the needed force changes uniformly, and therefore a user can control the buckling or unbuckling force conveniently, and the purpose of improving the use hand feeling of the user is achieved.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to a snap fastener. Background Technology

[0002] Snap fasteners, consisting of a pair of male and female snaps, are widely used in the seams of clothing, bags, and other items. The male snap includes an engaging protrusion, while the female snap has an engaging groove for attaching and detaching the male snap. The engaging protrusion has an enlarged portion, and the engaging groove contains a contracting portion. The maximum diameter of the enlarged portion is slightly larger than the minimum diameter of the contracting portion. When the engaging protrusion and engaging groove are inserted, the enlarged portion and / or the contracting portion elastically deform radially, causing the engaging protrusion and engaging groove to lock into place, thus completing the connection between the male and female snaps.

[0003] Currently, the radial dimension changes of the aforementioned expanded and contracted parts are uneven. That is, the required force is very small before the expanded and contracted parts come into contact, but the required force suddenly increases after they come into contact. Furthermore, the required force will rapidly decrease when the expanded part is about to pass through the contracted part. Therefore, the required force needs to change suddenly during the process of fastening and unfastening the male and female buckles, making it difficult for users to control the force of fastening or unfastening, resulting in a poor user experience. Utility Model Content

[0004] The purpose of this invention is to provide a snap fastener that improves the uniformity of force changes during fastening and unfastening, allowing users to easily control the force required to fasten or unfasten, and enhancing the user's tactile experience.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A snap fastener, comprising:

[0007] A male fastener component, the male fastener component including a male fastener base and an engaging protrusion protruding outward from the male fastener base, the circumferential surface of the engaging protrusion including a first conical surface, the first conical surface radially tapering from one end near the male fastener base to the other end, and the slope of the first conical surface remaining consistent along the axial direction of the first conical surface;

[0008] The female fastener component includes a female fastener base and an engaging groove disposed on the female fastener base. The engaging groove includes an inlet groove and a limiting groove in sequence along the groove opening to the groove bottom direction. The circumferential groove wall of the inlet groove is a second conical surface. The second conical surface radially tapers along the groove opening to the groove bottom direction. The slope of the second conical surface remains consistent along the groove opening to the groove bottom direction. The maximum diameter of the first conical surface is greater than the minimum diameter of the second conical surface. The limiting groove is used to limit the large end of the engaging protrusion.

[0009] In one embodiment of this application, the circumferential groove wall of the limiting groove is a third conical surface. The third conical surface gradually expands radially along the direction from the opening to the bottom of the engaging groove. The slope of the third conical surface remains consistent along the direction from the opening to the bottom of the engaging groove. The maximum diameter of the first conical surface is greater than the minimum diameter of the third conical surface.

[0010] In one embodiment of this application, the circumferential groove wall of the engaging groove further includes an annular mating surface connecting the second conical surface and the third conical surface.

[0011] In one embodiment of this application, the male fastening member includes:

[0012] The male buckle body includes an end facing the female buckle component, a first annular peripheral sidewall erected from the periphery of the end away from the female buckle component, and an annular support wall disposed in a first groove structure formed by the end and the first annular peripheral sidewall and abutting against the first annular peripheral sidewall. The end and the first annular peripheral sidewall form the engaging protrusion, and the outer peripheral surface of the first annular peripheral sidewall is the first conical surface.

[0013] A first mounting component includes a first base and a first column connected to the first base. The first column extends between the annular support wall and the end and is bent and deformed to connect the male buckle body to the first mounting component.

[0014] In one embodiment of this application, the annular support wall includes a first annular wall portion and a second annular wall portion connected to one end of the first annular wall portion and having a tortuous cross-section. The first annular wall portion is attached to the first annular peripheral wall, and the second annular wall portion extends out of the first groove structure in a direction away from the end and abuts against the first column portion.

[0015] In one embodiment of this application, one end of the first column extends between the first annular peripheral wall and the end portion and contacts the end portion, and abuts against the first annular wall portion.

[0016] In one embodiment of this application, the end is provided with a relief groove that is recessed toward the first groove-shaped structure.

[0017] In one embodiment of this application, a first concave-convex structure is provided on the surface of the male buckle body facing the first base and / or on the surface of the first base facing the male buckle body.

[0018] In one embodiment of this application, the female fastener includes:

[0019] The female buckle body includes a bottom facing the male buckle member and a second annular peripheral sidewall that rises from the periphery of the bottom towards the male buckle member. The bottom and the second annular peripheral sidewall form a second groove structure. The circumferential inner wall of the second groove structure is provided with a second conical surface and a third conical surface to form the engaging groove. The bottom is provided with a through hole.

[0020] The second mounting member includes a second base and a second post connected to the second base. The second post passes through the through hole from the side of the female buckle body away from the male buckle member and is bent and deformed to connect the second mounting member to the female buckle body.

[0021] In one embodiment of this application, a locking rubber ring is embedded in the second groove structure, the locking rubber ring is attached to the second annular peripheral sidewall, and the inner ring surface of the locking rubber ring is provided with the second conical surface and the third conical surface.

[0022] In one embodiment of this application, the second base includes:

[0023] A first substrate, wherein the periphery of the first substrate has an upright third annular peripheral sidewall;

[0024] The second substrate has a fourth annular circumferential sidewall that stands in the same direction as the third annular circumferential sidewall. The third annular circumferential sidewall is bent and deformed to wrap the fourth annular circumferential sidewall inside, so as to connect the first substrate and the second substrate. The second post is disposed on one of the first substrate and the second substrate near the female buckle body.

[0025] In one embodiment of this application, a second uneven structure is provided on the surface of the bottom facing the second base and / or on the surface of the second base facing the bottom.

[0026] As can be seen from the above technical solution, this utility model discloses a snap fastener, which includes a male snap fastener component and a female snap fastener component. The male snap fastener component includes a male snap fastener base and an engaging protrusion protruding outward from the male snap fastener base. The circumferential surface of the engaging protrusion is a first conical surface. The first conical surface gradually tapers radially from one end near the male snap fastener base to the other end, and the slope of the first conical surface remains consistent along the axial direction of the first conical surface. The female snap fastener component includes a female snap fastener base and an engaging groove disposed on the female snap fastener base. The engaging groove includes an inlet groove and a limiting groove in sequence along the groove opening to the groove bottom direction. The circumferential groove wall of the inlet groove is a second conical surface. The second conical surface gradually tapers radially along the groove opening to the groove bottom direction, and the slope of the second conical surface remains consistent along the groove opening to the groove bottom direction. The maximum diameter of the first conical surface is greater than the minimum diameter of the second conical surface. The limiting groove is used to limit the large end of the engaging protrusion.

[0027] In this design, the snap fastener's engaging protrusion has a first conical surface with a consistent axial slope, while the circumferential wall of the guide groove of the engaging groove has a second conical surface with a consistent axial slope. When fastened, the larger end of the first conical surface of the engaging protrusion contacts the second conical surface of the guide groove, allowing the engaging protrusion to slide along the second conical surface into the engaging groove, i.e., into the limiting groove. Since the first and second conical surfaces maintain a consistent axial slope, the required force does not change abruptly during the contact and relative movement between the first and second conical surfaces of the engaging protrusion and the engaging groove, but gradually increases until the larger end of the first conical surface of the engaging protrusion passes through the smaller end of the second conical surface. When unfastened, the first conical surface of the engaging protrusion contacts the limiting groove of the engaging groove. Since the first conical surface maintains a consistent axial slope, the required force does not change abruptly during the relative movement between the engaging protrusion and the engaging groove, but gradually increases until the engaging protrusion disengages from the engaging groove.

[0028] Therefore, it can be seen that by designing the shape of the snap protrusion and the snap groove, this design can avoid sudden changes in the force required during the snapping and unsnap process, so that the force required during the snapping and unsnap process changes evenly. This allows users to easily control the force required to snap or unsnap, thereby improving the user's feel. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the snap fastener provided in an embodiment of this utility model;

[0031] Figure 2 A front view of the snap fastener provided in an embodiment of this utility model;

[0032] Figure 3 A top view of the snap fastener provided in an embodiment of this utility model;

[0033] Figure 4 for Figure 3 A sectional view along direction A of the snap fastener in the fastened state provided in this embodiment of the utility model;

[0034] Figure 5 This is a cross-sectional view of the snap fastener in the unfastened state according to an embodiment of the present utility model.

[0035] Figure 6 This is a first-view structural diagram of the male fastener component of the snap fastener provided in an embodiment of the present utility model;

[0036] Figure 7 This is a second-view structural diagram of the male fastener component of the snap fastener provided in an embodiment of the present utility model;

[0037] Figure 8 A front view of the male snap fastener component provided in an embodiment of this utility model;

[0038] Figure 9 A top view of the male snap fastener component of the snap fastener provided in an embodiment of this utility model;

[0039] Figure 10 for Figure 9 Sectional view along direction B in the middle;

[0040] Figure 11 A cross-sectional view of the male snap fastener body of the male snap fastener component provided in an embodiment of this utility model;

[0041] Figure 12 This is a structural schematic diagram of the female snap fastener component of the snap fastener provided in an embodiment of the present utility model;

[0042] Figure 13 This is a front view of the female snap fastener component of the snap fastener provided in an embodiment of the present utility model;

[0043] Figure 14 A top view of the female snap fastener component of the snap fastener provided in an embodiment of this utility model;

[0044] Figure 15 for Figure 14 The C-direction sectional view.

[0045] In the picture:

[0046] 100 is the male fastener component; 100a is the first conical surface; 110 is the first mounting component; 111 is the first base; 112 is the first column; 120 is the male fastener body; 120a is the first groove structure; 120b is the clearance groove; 121 is the end; 122 is the first annular circumferential sidewall; 123 is the annular support wall; 1231 is the first annular wall portion; 1232 is the second annular wall portion;

[0047] 200 is the female fastener component; 200a is the second conical surface; 200b is the third conical surface; 200c is the annular mating surface; 210 is the second mounting component; 211 is the second base; 2111 is the first base plate; 2112 is the second base plate; 2113 is the third annular circumferential sidewall; 2114 is the fourth annular circumferential sidewall; 212 is the second column portion; 220 is the female fastener body; 221 is the bottom; 222 is the second annular circumferential sidewall; 223 is the annular extension portion; 230 is the locking rubber ring; 240 is the second concave-convex structure. Detailed Implementation

[0048] The core of this utility model is to provide a snap button. The structural design of the snap button can improve the uniformity of force changes during the fastening and unfastening process, making it easier for users to control the force of fastening or unfastening and improving the user's feel.

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] Please see Figures 1 to 4 , Figure 1 This is a schematic diagram of the snap fastener structure provided in an embodiment of the present utility model. Figure 2 This is a front view of the snap fastener provided in an embodiment of the present utility model. Figure 3 This is a top view of the snap fastener provided in an embodiment of the present invention. Figure 4 for Figure 3 A sectional view along direction A of the snap fastener in the fastened state provided in the embodiment of this utility model.

[0051] This utility model discloses a snap fastener, which includes a male snap fastener 100 and a female snap fastener 200.

[0052] The male fastener 100 includes a male fastener base and an engaging protrusion protruding outward from the male fastener base. The circumferential surface of the engaging protrusion is a first conical surface 100a, which tapers radially from one end near the male fastener base to the other end, and the slope of the first conical surface 100a remains consistent along its axial direction. The female fastener 200 includes a female fastener base and an engaging groove disposed on the female fastener base. The engaging groove includes an inlet groove and a limiting groove in sequence from the groove opening to the groove bottom. The circumferential wall of the inlet groove is a second conical surface 200a, which tapers radially from the groove opening to the groove bottom, and the slope of the second conical surface 200a remains consistent along the groove opening to the groove bottom. The maximum diameter of the first conical surface 100a is greater than the minimum diameter of the second conical surface 200a. The limiting groove is used to limit the large end of the engaging protrusion.

[0053] In this design, the snap-fit ​​protrusion has a first conical surface 100a with a consistent axial slope, while the circumferential groove wall of the guide groove of the snap-fit ​​groove has a second conical surface 200a with a consistent axial slope. When engaged, the larger end of the first conical surface 100a of the snap-fit ​​protrusion contacts the second conical surface 200a of the guide groove. Figure 5 As shown, the engaging protrusion can slide along the second conical surface 200a into the engaging groove, i.e., into the limiting groove. Since the axial slope of the first conical surface 100a and the second conical surface 200a remains consistent, the required force will not change suddenly during the contact and relative movement between the first conical surface 100a of the engaging protrusion and the second conical surface 200a of the engaging groove, but will gradually increase until the maximum end of the first conical surface 100a of the engaging protrusion passes through the minimum end of the second conical surface 200a, as shown. Figure 4 As shown, when the buckle is released, the first conical surface 100a of the engaging protrusion contacts the limiting groove of the engaging groove. Since the axial slope of the first conical surface 100a remains consistent, the required force will not change suddenly during the relative movement of the engaging protrusion and the engaging groove, but will gradually increase until the engaging protrusion and the engaging groove disengage.

[0054] Compared with the prior art, the snap provided in this utility model embodiment, through the shape design of the engaging protrusion and engaging groove, can avoid sudden changes in the force during the snapping and unbuckled process, so that the force required during the snapping and unbuckled process changes evenly, thereby making it easier for users to control the force of snapping or unbuckled, and achieving the purpose of improving the user's feel.

[0055] like Figure 4 and Figure 5As shown, in order to limit the engagement protrusion and improve the unhooking feel, in one embodiment of this application, the circumferential groove wall of the limiting groove is a third conical surface 200b. The third conical surface 200b gradually expands radially from the opening to the bottom of the engagement groove. The slope of the third conical surface 200b is consistent from the opening to the bottom of the engagement groove. The maximum diameter of the first conical surface 100a is greater than the minimum diameter of the third conical surface 200b, so that after the large end of the engagement protrusion enters the limiting groove, the axial limiting of the engagement protrusion can be achieved.

[0056] To increase the contact area between the engaging groove and the engaging protrusion, thereby improving the engaging strength, such as Figure 4 and Figure 5 As shown, in one embodiment, the circumferential groove wall of the engaging groove further includes an annular mating surface 200c connected between the second conical surface 200a and the third conical surface 200b. The annular mating surface 200c can be a cylindrical surface or a conical surface. When the annular mating surface 200c is a conical surface, the slope of the conical surface can be consistent with the slope of the first conical surface 100a, thereby ensuring that the annular mating surface 200c can fit with the first conical surface 100a, and more effectively increasing the contact area between the engaging groove and the engaging protrusion.

[0057] Please see Figures 6 to 11 In one specific embodiment of this application, the male fastener 100 includes a male fastener body 120 and a first mounting member 110. The first mounting member 110 forms the aforementioned male fastener base. The male fastener body 120 forms a snap-fit ​​protrusion protruding outward from the male fastener base. The male fastener body 120 includes an end 121 facing the female fastener 200, a first annular peripheral sidewall 122 extending from the periphery of the end 121 away from the female fastener 200, and an annular support wall 123 disposed in the first groove structure 120a formed by the end 121 and the first annular peripheral sidewall 122 and abutting against the first annular peripheral sidewall 122. The end 121 and the first annular peripheral sidewall 123... 22 is made of a metal plate, the material of which includes, but is not limited to, copper alloy and aluminum alloy. The annular support wall 123 is made of another metal plate and is formed by stamping. Of course, it should be noted that in other embodiments, the forming method can also be other methods, such as casting. The end 121 and the first annular peripheral sidewall 122 form an engaging protrusion. The outer peripheral surface of the first annular peripheral sidewall 122 is a first conical surface 100a. The annular support wall 123 is used to provide support for the first annular peripheral sidewall 122, improve the strength of the first annular peripheral sidewall 122, reduce the deformation of the first annular peripheral sidewall 122 due to fastening, and improve the durability of the male buckle body 120.

[0058] like Figure 10As shown, the first mounting member 110 includes a first base 111 and a first column portion 112 connected to the first base 111. The first mounting member 110 is made of a metal plate. The first column portion 112 extends between the annular support wall 123 and the end 121 and is bent and deformed to connect the male buckle body 120 to the first mounting member 110. When the male buckle member 100 is installed at the seam of clothing, bags, etc., the male buckle body 120 is placed on one side of the seam position, and the groove of the first groove structure 120a faces the seam. The first column portion 112 passes through the seam position from the other side of the seam position and extends into the groove of the first groove structure 120a. When it is squeezed, it deforms in a preset direction. As needed, the preset direction can be radially inward along the first column portion 112 or radially outward along the first column portion 112 to realize the riveting of the male buckle body 120 and the first mounting member 110.

[0059] To increase the strength of the annular support wall 123, in one embodiment of this application, such as Figure 10 and Figure 11 As shown, the annular support wall 123 includes a first annular wall portion 1231 and a second annular wall portion 1232 connected to one end of the first annular wall portion 1231 and having a tortuous cross-section. The first annular wall portion 1231 fits against the first annular peripheral wall 122. The second annular wall portion 1232 extends out of the first groove structure 120a in a direction away from the end 121 and abuts against the first column portion 112. In this way, the second annular wall portion 1232 with a tortuous cross-section can increase the radial strength of the annular support wall 123, and by having its end 121 abut against the first column portion 112, the support effect on the first annular peripheral wall 122 can be further improved.

[0060] To further optimize the above technical solution, in one embodiment of this application, such as... Figure 10 and Figure 11 As shown, one end of the first column portion 112 that extends between the first annular circumferential sidewall 122 and the end portion 121 contacts the end portion 121 and abuts against the first annular wall portion 1231, thereby further improving the support effect on the male buckle body 120.

[0061] To reduce the circumferential dimensions of the male fastener 100 and the female fastener 200 after they are fastened together, save space, and reduce the gaps at the seams of clothing, bags, etc., the end 121 is provided with a relief groove 120b that is recessed in the direction of the first groove structure 120a. The relief groove 120b is used to avoid the protruding structure at the connection between the female fastener body 220 of the female fastener 200 and the second connecting member that protrudes from the bottom of the engaging groove.

[0062] To clamp the seams of clothing, bags, etc., a first concave-convex structure is provided on the surface of the male buckle body 120 facing the first base 111 and / or the surface of the first base 111 facing the male buckle body 120. The first concave-convex structure can be formed by the end of the first annular peripheral sidewall 122 away from the end 121, or by the end of the annular support wall 123 away from the end 121. Of course, it can also be formed on the first base 111, or it can be formed simultaneously on the first base 111 and the first annular peripheral sidewall 122, or simultaneously on the first base 111 and the annular support wall 123. The first concave-convex structure can be multiple protrusions arranged circumferentially, or it can be a wavy structure formed by bending the first annular peripheral sidewall 122, the annular support wall 123, or the first base 111.

[0063] like Figures 12 to 15 As shown, in one embodiment of this application, the female buckle component 200 includes a female buckle body 220 and a second mounting component 210. The female buckle body 220 and the second mounting component 210 together form the aforementioned female buckle base. The female buckle body 220 includes a bottom 221 facing the male buckle component 100 and a second annular peripheral sidewall 222 rising from the periphery of the bottom 221 toward the male buckle component 100. The bottom 221 and the second annular peripheral sidewall 222 form a second groove structure. The circumferential inner wall of the second groove structure is provided with a second conical surface 200a and a third conical surface 200b to form a locking groove. The bottom 221 is provided with a through hole. The female buckle component 200 is made of a metal plate, and the material of the metal plate includes, but is not limited to, aluminum alloy and copper alloy.

[0064] The second mounting member 210 includes a second base 211 and a second post portion 212 connected to the second base 211. The second post portion 212 passes through a through hole from the side of the female fastener body 220 away from the male fastener member 100 and is bent and deformed to connect the second mounting member 210 to the female fastener body 220. To further compress the axial dimension after the male fastener member 100 and the female fastener member 200 are engaged, in one embodiment of this application, the deformation amount and deformation structure of the first post portion 112 of the first mounting member 110 and the second post portion 212 of the second mounting member 210 are different, such as... Figure 4As shown, the diameter of the first column portion 112 is larger than the diameter of the second column portion 212. During the pressing process of the first mounting member 110 and the male buckle body 120, the end portion 121 of the first column portion 112 of the first mounting member 110 expands radially outward under the action of the bottom of the clearance groove 120b in the above embodiment, forming a trumpet-shaped structure. While riveting the first mounting member 110 and the male buckle body 120, it provides support for the first annular peripheral sidewall 122 of the male buckle body 120. During the pressing process of the second mounting member 210 and the female buckle body 220, the end portion 121 of the second column portion 212 bends radially outward into an arc-shaped ring structure. This arc-shaped ring structure is opposite to the trumpet-shaped structure, and the clearance groove 120b can avoid the arc-shaped structure, thereby further compressing the axial dimension after the male buckle member 100 and the female buckle member 200 are fastened together, saving space.

[0065] It should be noted that the aforementioned second conical surface 200a, third conical surface 200b, and annular mating surface 200c can be formed by bending the end of the second annular circumferential sidewall 222 away from the bottom 221 inward, and can be formed by installing other components, such as... Figure 4 and Figure 5 As shown, in one embodiment of this application, a locking rubber ring 230 is embedded in the second groove structure. The locking rubber ring 230 is attached to the bottom 221 of the female buckle body 220 and the second annular peripheral sidewall 222. The inner ring surface of the locking rubber ring 230 is provided with a second conical surface 200a and a third conical surface 200b. Compared with metal materials, the locking rubber ring 230 can produce greater deformation, which is more conducive to improving the operating feel.

[0066] To facilitate the fixing of the snap ring 230, such as Figure 15 As shown, the second annular circumferential sidewall 222 has an annular extension 223 that bends and extends toward the axis of the female buckle body 220 at one end away from the bottom 221. The bottom 221 and the annular extension 223 can limit the locking ring 230 in the axial direction, and the second annular circumferential sidewall 222 can limit the locking ring 230 in the radial direction, so that the locking ring 230 can be well fixed in both the axial and radial directions, and avoids it from coming off the female buckle body 220 during the fastening and unfastening process.

[0067] like Figure 15As shown, in a specific embodiment of this application, the second base 211 includes a first substrate 2111 and a second substrate 2112, wherein the first substrate 2111 and the second substrate 2112 are respectively formed by stamping metal plates. The periphery of the first substrate 2111 has a raised third annular peripheral sidewall 2113, and the periphery of the second substrate 2112 has a fourth annular peripheral sidewall 2114 raised in the same direction as the third annular peripheral sidewall 2113. The third annular peripheral sidewall 2113 is bent and deformed to wrap the fourth annular peripheral sidewall 2114 inside, so as to connect the first substrate 2111 and the second substrate 2112. The second post portion 212 is disposed on one of the first substrate 2111 and the second substrate 2112 near the female buckle body 220.

[0068] Of course, the second base 211 mentioned above can also adopt an integral structure, which is not limited here.

[0069] In order to enable the female buckle component 200 to be clamped to the seam of clothing, bags, etc., in one embodiment of this application, a second concave-convex structure 240 is provided on the surface of the bottom facing the second base 211 and / or the surface of the second base 211 facing the bottom. The second concave-convex structure 240 can be a plurality of protrusions arranged in the circumferential direction or a wave-shaped undulating structure. In this application, the second concave-convex structure 240 is provided on the surface of the first substrate 2111 and the second substrate 2112 near the female buckle body 220 facing the female buckle body 220, or is provided on the surface of the bottom facing the second base 211.

[0070] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0071] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A snap fastener, characterized in that, include: A male fastener (100) includes a male fastener base and an engaging protrusion protruding outward from the male fastener base. The circumferential surface of the engaging protrusion includes a first conical surface (100a). The first conical surface (100a) radially tapers from one end near the male fastener base to the other end, and the slope of the first conical surface (100a) remains consistent along the axial direction of the first conical surface (100a). A female fastener component (200) includes a female fastener base and an engaging groove disposed on the female fastener base. The engaging groove includes an inlet groove and a limiting groove in sequence along the groove opening to the groove bottom direction. The circumferential groove wall of the inlet groove is a second conical surface (200a). The second conical surface (200a) gradually tapers radially along the groove opening to the groove bottom direction. The slope of the second conical surface (200a) remains consistent along the groove opening to the groove bottom direction. The maximum diameter of the first conical surface (100a) is greater than the minimum diameter of the second conical surface (200a). The limiting groove is used to limit the large end of the engaging protrusion.

2. The snap fastener according to claim 1, characterized in that, The circumferential groove wall of the limiting groove is a third conical surface (200b). The third conical surface (200b) gradually expands radially from the opening to the bottom of the engaging groove. The slope of the third conical surface (200b) remains consistent from the opening to the bottom of the engaging groove. The maximum diameter of the first conical surface (100a) is greater than the minimum diameter of the third conical surface (200b).

3. The snap fastener according to claim 2, characterized in that, The circumferential groove wall of the engaging groove also includes an annular mating surface (200c) connecting the second conical surface (200a) and the third conical surface (200b).

4. The snap fastener according to any one of claims 1-3, characterized in that, The male fastener (100) includes: The male buckle body (120) includes an end (121) facing the female buckle member (200), a first annular peripheral sidewall (122) erected from the periphery of the end (121) away from the female buckle member (200), and an annular support wall (123) disposed in a first groove structure (120a) formed by the end (121) and the first annular peripheral sidewall (122) and abutting against the first annular peripheral sidewall (122). The end (121) and the first annular peripheral sidewall (122) constitute the engaging protrusion. The outer peripheral surface of the first annular peripheral sidewall (122) is the first conical surface (100a). A first mounting member (110) includes a first base (111) and a first column (112) connected to the first base (111). The first column (112) extends between the annular support wall (123) and the end (121) and is bent and deformed to connect the male buckle body (120) to the first mounting member (110).

5. The snap fastener according to claim 4, characterized in that, The annular support wall (123) includes a first annular wall portion (1231) and a second annular wall portion (1232) connected to one end of the first annular wall portion (1231) and having a tortuous cross-section. The first annular wall portion (1231) fits against the first annular peripheral wall (122), and the second annular wall portion (1232) extends out of the first groove structure (120a) in a direction away from the end (121) and abuts against the first column portion (112).

6. The snap fastener according to claim 5, characterized in that, The first column portion (112) extends into the space between the first annular peripheral wall (122) and the end portion (121), and contacts the end portion (121) and abuts against the first annular wall portion (1231).

7. The snap fastener according to claim 4, characterized in that, The end portion (121) is provided with a relief groove (120b) that is recessed toward the first groove structure (120a).

8. The snap fastener according to claim 4, characterized in that, The male buckle body (120) has a first concave-convex structure on the surface facing the first base (111) and / or the surface of the first base (111) facing the male buckle body (120).

9. The snap fastener according to claim 2 or 3, characterized in that, The female fastener component (200) includes: The female buckle body (220) includes a bottom facing the male buckle member (100) and a second annular peripheral sidewall that rises from the periphery of the bottom toward the male buckle member (100). The bottom and the second annular peripheral sidewall form a second groove structure. The circumferential inner wall of the second groove structure is provided with a second conical surface (200a) and a third conical surface (200b) to form the engaging groove. The bottom is provided with a through hole. The second mounting member (210) includes a second base (211) and a second post (212) connected to the second base (211). The second post (212) passes through the through hole from the side of the female buckle body (220) away from the male buckle member (100) and is bent and deformed to connect the second mounting member (210) to the female buckle body (220).

10. The snap fastener according to claim 9, characterized in that, The second groove structure is embedded with a locking rubber ring (230), which is attached to the second annular peripheral sidewall. The inner ring surface of the locking rubber ring (230) is provided with the second conical surface (200a) and the third conical surface (200b).

11. The snap fastener according to claim 9, characterized in that, The second base (211) includes: A first substrate (2111) has a raised third annular peripheral sidewall (2113) at its periphery; The second substrate (2112) has a fourth annular sidewall (2114) that stands in the same direction as the third annular sidewall (2113) around its periphery. The third annular sidewall (2113) is bent and deformed to wrap the fourth annular sidewall (2114) inside, so as to connect the first substrate (2111) and the second substrate (2112). The second post (212) is disposed on one of the first substrate (2111) and the second substrate (2112) near the female buckle body (220).

12. The snap fastener according to claim 9, characterized in that, A second concave-convex structure (240) is provided on the bottom surface facing the second base (211) and / or the second base (211) surface facing the bottom.

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