Rope chain butt joint lock catch

Abstract

A rope chain butt joint lock catch comprises two connecting pieces, one side of each connecting piece is connected with the two ends of a rope chain, the other side of each connecting piece is in butt joint and buckled, each connecting piece comprises an outer shell, an inner clamping portion and a connecting tail end, one end of each connecting tail end is connected with the rope chain, the other end of each connecting tail end is connected with the inner clamping portion and the outer shell at the same time, and each connecting tail end is internally connected with the inner clamping portion and externally connected with the outer shell. Outer shells of the first connecting piece and the second connecting piece are each of a spiral hollowed-out structure, and the spiral hollowed-out parts of the first connecting piece and the second connecting piece are nested and matched with each other and belong to the same spherical shell after being spliced. And the inner clamping parts are butted and buckled with each other. According to the rope chain butt joint lock catch, the spiral hollowed-out spherical shell structure design is adopted, meanwhile, the inner clamping parts are in butt joint and buckled in the shell, the connecting and clamping processes are completed through a double-confirmation type structure, opening and buckling can be achieved at any time, the wearing process is completed, and the rope chain butt joint lock catch is convenient to use and high in practicability. Meanwhile, the structure is simple, the manufacturing cost is low, reliability and safety are good, and the use experience is improved.

Description

[Technical Field]

[0001] This utility model relates to the field of jewelry technology, and in particular to the field of locking mechanisms used in the connection of jewelry cords and chains. [Background Technology]

[0002] As living standards continue to improve, people's enthusiasm for jewelry products is also rising, and their requirements for jewelry categories and aesthetics are becoming more and more diversified. Necklaces, bracelets and earrings are among the most common types of jewelry, and they have always been loved by consumers of all levels and ages, becoming major consumer products.

[0003] For jewelry such as bracelets, necklaces, and cords, there are styles with fixed, inseparable connections, as well as styles that open and close using movable clasps. The oldest connection method is the lobster clasp. With the development of precision hardware processing or precious metal processing technology, various types of clasp structures have gradually emerged, including snap clasps, rotating locking clasps, and press-fit clasps, among other connection devices with different structures and matching methods. Considering the current technical requirements, the structures used in jewelry need to be small in size and have high reliability requirements, making structural design quite difficult. Moreover, since the clasps used in jewelry are high-frequency opening and closing components, there are many related requirements regarding their fatigue limit and ease of wearing.

[0004] Currently, common locks on the market have simple structures, such as snap-on structures. Repeatedly opening and closing the snap can cause the buckle to loosen, leading to the risk of it accidentally coming loose and falling off. There are also magnetic buckles, which may be accidentally hooked in daily life and the magnetic part may be opened by external force, potentially causing them to come loose. To address these issues, there is a need to design lock products that are simple in structure but highly reliable. [Summary of the Invention]

[0005] This invention addresses existing problems by proposing a locking mechanism suitable for use with jewelry cord chains. It is designed to be attached to both ends of the chain, allowing for easy opening and closing during wear. The mechanism should be simple in structure, low in manufacturing cost, reliable and secure, suitable for repeated opening and closing without easily failing or reaching its fatigue limit in a short time, thus improving the user experience. Therefore, a double-confirmation structure is adopted to complete the connection and locking process.

[0006] This utility model relates to a rope chain docking lock, comprising a first connector and a second connector. The two connectors connect to both ends of the rope chain on one side and are fastened together on the other. The first and second connectors each include an outer shell, an inner locking portion, and a connecting end. One end of the connecting end connects to the rope chain, and the other end connects to both the inner locking portion and the outer shell. The inner locking portion connects to the inner shell, and the outer shell connects to the outer shell. Both the outer shells of the first and second connectors have a spiral hollow structure, and the spiral hollow portions of both are nested and matched, forming a single spherical shell after assembly. The inner locking portions are fastened together.

[0007] The matching sides of the spirally perforated portions of the outer shells of the first and second connectors are roughened surfaces. These roughened surfaces provide a certain degree of frictional resistance.

[0008] The inner snap-fit ​​parts of the first connector and the second connector are mating connection structures, and the mating parts are either a protrusion and groove structure or a magnetic attraction structure.

[0009] The inner locking parts of the first connector and the second connector are of the structure of protrusion and groove. The first connector has a protrusion on its inner central axis, while the second connector has a groove on its central axis.

[0010] The groove structure is a groove with a partially spherical groove carved out inside.

[0011] Near the opening of the groove structure, there is a cylindrical groove that connects inward to a spherical groove.

[0012] The front end of the protruding post is a partially spherical protrusion.

[0013] Several expansion grooves coaxial with the axial direction are provided on the side wall of the groove structure.

[0014] The expansion grooves are evenly distributed in the circumferential direction of the groove structure.

[0015] The expansion grooves are typically 3 to 6.

[0016] The rope chain locking buckle of this utility model adopts a spiral hollow spherical shell structure design, and the spiral hollow parts of the two parts are nested and matched with each other, and after splicing, they belong to the same spherical shell. At the same time, the inner locking parts are interlocked within the shell, which is a double confirmation structure to complete the connection and locking process. It can be opened and locked at any time to complete the wearing process. The design is simple and has low manufacturing cost, good reliability and safety, and is suitable for repeated opening and closing without easily failing or reaching the fatigue limit in a short time, thus improving the user experience. [Attached Image Description]

[0017] Figure 1This is a schematic diagram of the overall structure of the rope and chain docking lock involved in this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the rope chain docking lock after docking and pairing involved in this utility model;

[0019] Figure 3 This is a schematic diagram of the overall and partial structure of the rope chain docking lock involved in this utility model;

[0020] Figure 4 This is a cross-sectional view of the overall structure of the rope chain docking lock involved in this utility model;

[0021] Figure 5 This is a schematic diagram of the inner locking part of the rope chain docking lock involved in this utility model;

[0022] Figure 6 This is a detailed schematic diagram of the groove structure of the rope chain docking lock involved in this utility model;

[0023] in:

[0024] 10. First connector; 11. Outer shell; 12. Inner snap-fit ​​part; 13. Connecting end; 14. Protrusion;

[0025] 20. Second connector; 21. Outer shell; 22. Inner snap-fit ​​part; 23. Connecting end; 24. Groove structure; 241. Partial spherical groove; 242. Cylindrical groove; 243. Expansion groove.

Detailed Implementation Methods

[0026] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0027] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Please refer to the attached document. Figure 1 and attached Figure 2 The invention relates to a rope chain docking lock, which includes a first connector 10 and a second connector 20. The two connectors connect the two ends of the rope chain on one side and fasten to each other on the other side. In fact, the two connectors are assembled at both ends of the rope chain to realize the movable locking and unlocking operation of the rope chain.

[0030] The first connector 10 and the second connector 20 each include an outer shell 11, an inner snap-fit ​​part 12 and a connecting end 13, wherein one end of the connecting end 13 is connected to the rope chain, and the other end is connected to both the inner snap-fit ​​part 12 and the outer shell 11, wherein the inner snap-fit ​​part is connected to the inner shell 11 and the outer shell 11 is connected to the outer shell 11.

[0031] Please refer to the attached document. Figure 2 The illustration shows the effect of the first connector 10 and the second connector 20 being assembled together. For distinction, we can see the outer shell 11 of the first connector 10 and the outer shell 21 of the second connector, as well as the connecting end 13 of the first connector 10 and the connecting end 23 of the second connector. (See attached image.) Figure 1 and attached Figure 2 By combining these, we can see that the outer shells of the first connector 10 and the second connector 20 are both spiral hollow structures, and the spiral hollow parts of the two are nested and matched with each other, and after splicing, they belong to the same spherical shell; the inner snap-fit ​​parts are connected and snapped together.

[0032] More importantly, the matching sides of the spiral hollow parts of both have rough surfaces to provide a certain amount of frictional resistance. This is to avoid accidental operation due to unintentional touch. Instead, a certain amount of force is required to push or pull to insert them or pull them out of the matching state, forming the first confirmation action.

[0033] Please refer to the attached document. Figure 3 -Appendix Figure 5The inner locking parts of the first connector 10 and the second connector 20 are mutually matching mating connection structures. The mating parts are either a protrusion and groove structure or a magnetic attraction structure. Essentially, the inner locking part is the second confirmation action. After the outer shell is spiraled forward a certain distance, the inner locking parts begin to engage, completing the second mating lock confirmation. The inner locking part can use various different structures, such as magnetic attraction or snap-fit, as long as the mating structure remains coaxial during both engagement and disengagement.

[0034] Please refer to the attached document. Figure 3 The illustration shows an embodiment in which the inner locking structure adopts a protruding post and a groove structure. The inner locking part of the first connector 10 and the second connector 20 is a protruding post and a groove structure. The first connector 10 has a protruding post 14 on its inner central axis, while the second connector 20 has a groove structure 24 on its central axis.

[0035] Please refer to the attached document. Figure 4 and attached Figure 5 The groove structure 24 is a groove with a partially spherical groove 241 carved out inside.

[0036] Near the opening of the groove structure 24, there is a cylindrical groove 242 that connects inward to a spherical groove 241.

[0037] The front end of the protrusion 14 is a partially spherical protrusion.

[0038] Several expansion grooves 243 coaxial with the axial direction are provided on the side wall of the groove structure 24.

[0039] The expansion grooves 243 are evenly distributed in the circumferential direction of the groove structure 24.

[0040] The expansion grooves 243 are typically 3 to 6 in number. The function of these expansion grooves is to provide slight expansion space and leeway. The size of the protrusion itself should be slightly larger than the inner diameter of the groove structure for locking. When it needs to be inserted, it needs to be squeezed with a little force, so the protrusion will expand the groove structure to a certain extent to insert into it. Therefore, expansion grooves need to be opened on the side wall to provide space for expansion and contraction.

[0041] The rope chain locking buckle of this utility model adopts a spiral hollow spherical shell structure design, and the spiral hollow parts of the two parts are nested and matched with each other, and after splicing, they belong to the same spherical shell. At the same time, the inner locking parts are interlocked within the shell, which is a double confirmation structure to complete the connection and locking process. It can be opened and locked at any time to complete the wearing process. The design is simple and has low manufacturing cost, good reliability and safety, and is suitable for repeated opening and closing without easily failing or reaching the fatigue limit in a short time, thus improving the user experience.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A rope chain butt lock buckle comprising a first connecting piece and a second connecting piece, both of which connect two ends of a rope chain on one side and are buckled tightly to each other on the other side, characterized in that, The first connecting piece and the second connecting piece each comprise an outer shell, an inner clamping part and a connecting end, wherein the connecting end is connected with the rope chain at one end and is connected with the inner clamping part and the outer shell at the other end, the inner clamping part is connected with the inner clamping part, and the outer shell is connected with the outer shell; the outer shell of the first connecting piece and the second connecting piece is a spiral hollow structure, and the spiral hollow parts of the two are nested and matched with each other, and after splicing, they belong to the same spherical shell; the inner clamping parts are mutually butted and buckled.

2. The cord chain docking lock of claim 1, wherein, The matched side surface of the spiral hollow part of the outer shell of the first connecting piece and the second connecting piece is a rough surface.

3. The cord interface lock of claim 2, wherein: The inner clamping parts of the first connecting piece and the second connecting piece are mutually matched butt joint structures, and the butt joint parts are convex column and groove structures or magnetic attraction structures.

4. The cord interface lock of claim 3, wherein: If the inner clamping parts of the first connecting piece and the second connecting piece are convex column and groove structures, the first connecting piece is provided with a convex column on the central axis, and the second connecting piece is provided with a groove structure on the central axis.

5. The cord interface lock of claim 4, wherein: The groove structure is a groove inside a part of a spherical groove.

6. The cord interface lock of claim 5, wherein: The groove structure is a groove inside a part of a spherical groove.

7. The cord interface lock of claim 4, wherein: The front end of the convex column is a part of a spherical protrusion.

8. The cord interface lock of any of claims 4-7, wherein, A plurality of expansion line grooves coaxial with the axis direction are arranged on the side wall of the groove structure.

9. The cord chain docking lock of claim 8, wherein, The expansion line grooves are uniformly distributed in the circumferential direction of the groove structure.

10. The cord interface lock of claim 9, wherein: The expansion line grooves are generally 3-6.

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