A spring ring and female buckle applied to a four-buckle

Abstract

This utility model discloses a spring coil and female snap fastener for use in snap fasteners, relating to the field of snap fastener technology. It includes a coil body with an inner and outer ring. The coil body has a protrusion on one side of the inner ring facing the center point of the coil body, and the protrusion has first endpoints at both ends. The center point of the coil body is defined as O, the diameter of the coil body is XY, the distance from the protrusion's endpoint closest to the center point to the center point is OA, and the distance from the first endpoint to the center point is OB, satisfying OA < OB, and OA / XY = 30%–40%, OB / XY = 35%–45%. The protrusion on one side of the inner ring facing the center point, with first endpoints at both ends, provides a contact point when the spring coil engages with the male snap fastener, ensuring stable opening and closing. Even if the spring coil breaks accidentally, the elasticity of the protrusion facing the center point allows it to maintain its engagement function after breakage.

Description

Technical Field

[0001] This utility model belongs to the field of snap fastener technology, specifically relating to a spring ring and female snap fastener used in snap fasteners. Background Technology

[0002] Snap fasteners, also known as four-button fasteners, typically consist of a female and a male. The female fastener has a groove in the center, while the male fastener has a raised bead. An elastic element, such as a spring coil, is often installed in the groove. This elastic element clamps the bead, connecting the two different fasteners. They are widely used in clothing, bags, umbrellas, and other items. Snap fasteners facilitate fastening and unfastening, making them convenient for consumers. The spring coil, as the most critical core component of the snap fastener, directly affects the product's functionality. Currently, common spring coils have the following functional defects: First, the fastening force is too tight, while the unfastening force is too loose. Conventional spring coils come in two shapes: round and hexagonal. Round spring coils are generally made of copper, providing a tighter fastening; hexagonal spring coils are generally made of plastic, resulting in a looser unfastening force. Second, spring coils are prone to breakage. Breakage frequently occurs during production assembly and garment binding, causing the snap fastener to lose its lock and become unusable. Third, the large contact area of ​​the snap fastener leads to excessive tightness. To solve at least one of the above technical problems, it is necessary to develop a spring ring and female snap fastener for use in snap fasteners. Utility Model Content

[0003] The purpose of this utility model is to provide a spring ring and female buckle for use in snap fasteners to solve the above-mentioned technical problems. A protrusion is provided on one side of the inner ring facing the center point of the ring body, and the two ends of the protrusion are provided with first endpoints. Since the endpoints of the protrusion are a certain distance away from the ring body, the spring ring has a contact point with the male buckle when it is fastened, so that the product can be opened and closed stably. In the event of accidental breakage of the spring ring, since the protrusion faces the center point of the ring body and has elasticity, the fastening function can be maintained after the breakage.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0005] A spring coil for snap fasteners includes a coil body with an inner coil and an outer coil. The coil body has a protrusion on one side of the inner coil that faces the center point of the coil body, and the two ends of the protrusion are provided with first endpoints.

[0006] Define the center point of the coil as O, the diameter of the coil as XY, the distance from the end of the protrusion closest to the center point of the coil to the center point of the coil as OA, and the distance from the first end point to the center point of the coil as OB, satisfying OA < OB, and OA / XY = 30%~40%, OB / XY = 35%~45%. A protrusion facing the center point of the coil is provided on one side of the inner coil, and the two ends of the protrusion are provided with first end points. Because the end points of the protrusion are a certain distance from the coil, the spring coil has a contact point with the male buckle when it is engaged, making the product opening and closing stable. In the event of accidental breakage of the spring coil, because the protrusion faces the center point of the coil and has elasticity, the engagement function can be maintained after breakage.

[0007] Preferably, one or more protrusions are arranged circumferentially around the center point of the ring body. When multiple protrusions are provided, adjacent protrusions share a common first end point, such that the number of first end points is equal to the number of protrusions; in this technical solution, the number of protrusions is set to 8, and the number of first end points is set to 8. This gives the protrusions multiple contact points that can contact the male buckle, making the product opening and closing stable.

[0008] Preferably, the cross-sectional shape of the protrusion near its center point is one of an arc shape, a broken line shape, or a triangle. This technical solution uses an arc shape.

[0009] Preferably, the ring body also has a deformation portion arranged radially on the side of the protrusion near the outer ring. The deformation portion serves as a buffer design, providing space for the protrusion to deform when connected to the male buckle, ensuring uniform force at the contact point between the protrusion and the male buckle, making the product fasten smoothly and effortlessly.

[0010] Preferably, the deformable portion is disposed within the projection range of the protrusion along the radial direction of the ring body.

[0011] Preferably, the deformable portion includes a deformable hole. Specifically, the deformable hole is disposed between the inner ring and the outer ring.

[0012] Preferably, one or more deformable holes are provided along the radial direction of the ring body. This technical solution provides one hole, and preferably two holes, which serve as a buffer during fastening to ensure that the contact points of the protrusions are subjected to uniform force.

[0013] Preferably, the deformable hole is one of a through hole, a blind hole, or a buried hole. In this technical solution, the deformable hole is specifically a through hole.

[0014] Preferably, the deformable holes and protrusions are arranged in groups, with one or more groups arranged along the circumference of the ring body. In this technical solution, the number of protrusions and deformable holes is one, and eight groups are arranged along the circumference of the ring body.

[0015] Preferably, both ends of the ring body along the axial direction are flat. This facilitates molding, and compared to uneven surfaces, the mold structure is simpler, and the contact area with the mold is smaller, making demolding easier.

[0016] This technical solution also provides a female buckle, including a female buckle assembly, wherein the female buckle assembly is fitted with the spring ring.

[0017] This application has achieved beneficial technical effects:

[0018] This utility model has a protrusion on one side of the inner ring facing the center point of the ring body, and the two ends of the protrusion are provided with first endpoints. Since the endpoints of the protrusion are a certain distance away from the ring body, the spring ring has a contact point that contacts the male buckle when it is engaged, so that the product can open and close stably. In the event of accidental breakage of the spring ring, since the protrusion faces the center point of the ring body, the engagement function can be maintained after the breakage. Attached Figure Description

[0019] Figure 1 The image shown is one of the structural schematic diagrams of a spring coil;

[0020] Figure 2 The second schematic diagram of the spring coil is shown.

[0021] Figure 3 The diagram shows a structure with multiple deformable holes.

[0022] Figure 4 The diagram shows the connection structure between the male and female buckles.

[0023] Figure 5 The diagram shown is an exploded view of the male and female fasteners.

[0024] Figure Labels

[0025] 1-Inner ring; 2-Outer ring; 3-Ring body; 4-Protrusion; 5-First end point; 6-Deformable hole. Detailed Implementation

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0027] The technical solution of this utility model will be described in detail below with specific embodiments.

[0028] Reference Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, a spring ring for snap fasteners includes a ring body 3 with an inner ring 1 and an outer ring 2. The ring body 3 has a protrusion 4 on one side of the inner ring 1 facing the center point of the ring body 3, and the two ends of the protrusion 4 are provided with first endpoints 5.

[0029] Define the center point of the ring 3 as O, the diameter of the ring 3 as XY, the distance from the endpoint of the protrusion 4 closest to the center point of the ring 3 to the center point of the ring 3 as OA, and the distance from the first endpoint 5 to the center point of the ring 3 as OB, satisfying OA < OB, and OA / XY = 30%~40%, OB / XY = 35%~45%. A protrusion facing the center point of the ring 3 is provided on one side of the inner ring 1, and the first endpoints 5 are provided at both ends of the protrusion 4. Since the endpoints of the protrusion 4 are a certain distance from the ring 3, the spring ring has a contact point with the male buckle when it is engaged, making the product opening and closing stable. In the event of accidental breakage of the spring ring, since the protrusion 4 faces the center point of the ring and has elasticity, the engagement function can be maintained after breakage, providing a double safety measure.

[0030] One or more protrusions 4 are arranged circumferentially around the center point of the ring body 3. When multiple protrusions 4 are provided, adjacent protrusions 4 share a common first end point 5, such that the number of first end points 5 is equal to the number of protrusions 4; in this technical solution, the number of protrusions 4 is set to 8, and the number of first end points 5 is set to 8. This gives the protrusions 4 multiple contact points that can contact the male buckle, making the product opening and closing stable.

[0031] The cross-sectional shape of the protrusion 4 near the center point is one of arc, zigzag, or triangular. This technical solution uses an arc shape. This ensures that the protrusion 4 has a contact point facing the center of the coil, making the product open and close securely when used with the male buckle; in the event of accidental breakage of the spring coil, because the protrusion 4 faces the center of the coil and is elastic, it can maintain the fastening function after breakage, providing a double safety function.

[0032] The ring body 3 is also provided with a deformation part arranged radially on the side of the protrusion 4 near the outer ring. The deformation part is designed as a buffer position, providing space for the protrusion 4 to deform when it is connected with the male buckle. The contact point between the protrusion 4 and the male buckle is subjected to uniform force, so that the product can be fastened smoothly and without effort.

[0033] Along the radial direction of the ring body, the deformable part is disposed within the projection range of the protrusion 4.

[0034] The deformable part includes a deformable hole 6. Specifically, the deformable hole 6 is disposed between the inner ring 1 and the outer ring 2.

[0035] The deformable hole 6 is provided radially along the ring body to serve as a buffer when it is fastened, so that the contact point of the protrusion 4 is subjected to uniform force.

[0036] The deformable hole 6 is a through hole. In this technical solution, the deformable hole 6 is specifically a through hole. The cross-section of the deformable hole 6 along the radial direction of the ring body 3 is an annular closed surface, so that the deformable hole 6 deforms when it is compressed.

[0037] The deformable hole 6 and the protrusion 4 are grouped together and arranged in one or more groups along the circumference of the ring body 3. In this technical solution, the number of protrusion 4 and deformable hole 6 is one, and eight groups are arranged along the circumference of the ring body 3. This gives the inner ring multiple protrusions 4, thus providing multiple contact points. When used with the male buckle, this ensures a stable opening and closing of the product. In the event of accidental breakage of the spring ring, because the protrusion 4 faces the center of the ring body and is elastic, it can maintain the fastening function after breakage, providing a double safety function.

[0038] The two ends of the ring 3 along the axial direction are both flat, which facilitates molding. Compared with uneven surfaces, the mold structure is simple and the contact area with the mold is small, making demolding easier.

[0039] A cross-section along the radial direction of the ring body 3 shows that the outer circumference of the outer ring 1 is circular; the ring body 3 has a through hole in the middle for easy connection with the male buckle.

[0040] This technical solution also provides a female buckle, including a female buckle assembly 7, wherein the female buckle assembly 7 is fitted with a spring coil as described in any one of claims 1 to 9. The female buckle assembly 7 includes a spring cup 71, and the spring coil is coaxially disposed within the spring cup 71; the male buckle 8 is provided with a bead head 81, wherein the bead head 81 penetrates the spring cup 71 and its radially outer surface abuts against the surface of the protrusion 4. Thus, the male buckle 8 and the female buckle 7 are fastened together.

[0041] This technical solution also provides a four-in-one fastener for installing the female fastener.

[0042] In this technical solution, compared with the existing technology, the added protrusion 4 has an arched curvature, which improves the elasticity of the spring coil and maintains a good user experience even in the event of coil breakage. It also allows for smoother fastening and more stable opening. The coil body features protrusions and deformable holes, creating a double-layer integrated design. The protrusion 4 has a contact point near the center of the coil body, and first endpoints 5 are located on both sides of the protrusion 4, making the inner coil umbrella-shaped. This provides multiple contact points for the axially arranged protrusions 4 to contact the bead head, ensuring stable opening and closing. Even if a protrusion on the inner coil accidentally breaks, the contact point on the protrusion 4 still retains elastic tension, maintaining the fastening function after breakage, providing double protection. The buffer design of the deformable holes ensures even force distribution on the contact points of the protrusions 4, making the product fasten smoothly and effortlessly. The double-layer structure of the spring coil and the integrated buffer design of the deformable holes solve the problems of functional loss of lock and unstable fastening force after breakage, improving the difficulty of spring coil breakage during the production process of snap fasteners.

[0043] In this technical solution, the spring coil is made of plastic, specifically POM; alternatively, other materials such as copper, iron, and stainless steel can be selected; alternatively, a non-integrated structure, such as a composite structure, can be used.

[0044] Example 2

[0045] This embodiment only describes the differences from the above embodiments; other technical features are the same. In this embodiment, the deformable hole 6 is a blind hole, wherein the cross-section of the deformable hole 6 along the radial direction of the ring body 3 is an annular closed surface, so that the deformable hole 6 deforms when compressed. Specifically, the blind hole is closed on one side and open on the other side along the axial direction of the ring body, and partially penetrates the ring body; it is sufficient to satisfy the requirement that the deformable hole deforms when the protrusion is compressed.

[0046] Example 3

[0047] This embodiment only describes the differences from the above embodiments; other technical features are the same. In this embodiment, the deformable hole 6 is a buried hole, wherein the cross-section of the deformable hole 6 along the radial direction of the ring body 3 is an annular closed surface, so that the deformable hole 6 deforms when compressed. Specifically, the buried hole is closed on both sides along the axial direction of the ring body, and a cavity is provided between the two sides along the axial direction of the ring body; it is sufficient to satisfy the requirement that the deformable hole deforms when the protrusion is compressed.

[0048] Example 4

[0049] This embodiment only describes the differences from the above embodiments; other technical features are the same. In this embodiment, refer to... Figure 3 As shown, multiple deformable holes 6 are arranged radially along the coil body. Specifically, two holes are provided to act as a buffer during engagement, ensuring uniform force distribution at the contact points of the protrusions 4. This creates a multi-layered structure between the protrusions in the radial direction of the spring coil and the coil body.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0052] The embodiments of the spring ring and female buckle applied to snap fasteners provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the core idea 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 principle 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 spring ring for snap fasteners, comprising a ring body (3) having an inner ring (1) and an outer ring (2), characterized in that, The ring body (3) has a protrusion (4) facing the center point of the ring body (3) on one side of the inner ring (1), and the two ends of the protrusion (4) are provided with first endpoints (5); Define the center point of the ring body (3) as O, the diameter of the ring body (3) as XY, the distance from the end point of the protrusion (4) closest to the center point of the ring body (3) to the center point of the ring body (3) as OA, and the distance from the first end point (5) to the center point of the ring body (3) as OB, satisfying OA < OB, and OA / XY = 30%~40%, OB / XY = 35%~45%.

2. The spring coil according to claim 1, characterized in that, One or more protrusions (4) are arranged circumferentially around the center point of the ring body (3).

3. The spring coil according to claim 1 or 2, characterized in that, The cross-sectional shape of the protrusion (4) on the side near the center point is one of arc, broken line, or triangle.

4. The spring coil according to claim 1, characterized in that, The ring body (3) is also provided with a deformable part arranged in its radial direction on the side of the protrusion (4) near the outer ring.

5. The spring coil according to claim 4, characterized in that, Along the radial direction of the ring body, the deformable part is disposed within the projection range of the protrusion (4).

6. The spring coil according to claim 4, characterized in that, The deformable part includes a deformable hole (6).

7. The spring coil according to claim 6, characterized in that, One or more deformable holes (6) are provided along the radial direction of the ring body.

8. The spring coil according to claim 6, characterized in that, The deformable hole (6) is one of the following: through hole, blind hole, or buried hole.

9. The spring coil according to claim 6, characterized in that, The deformable holes (6) and protrusions (4) are arranged in groups and one or more groups are arranged along the circumference of the ring body (3); The two ends of the ring (3) along the axial direction are both planar.

10. A female buckle, comprising a female buckle assembly, characterized in that, The female buckle assembly (7) is fitted with a spring coil as described in any one of claims 1 to 9.

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