Inverted-V-shaped ring with knotless connection of main lines

Abstract

The utility model discloses a main line knotless connection splayed ring, comprising a hollow cap, the top end of which is provided with a through hole in a penetrating manner; a sub-line connecting ring is rotatably arranged at the bottom end of the structural column; the connecting column is used for connecting the hollow cap and the structural column into an integrated structure; the bottom face of the hollow cap is provided with an annular blocking face, the inner diameter of the annular blocking face is larger than that of the penetrating hole, so that a knot of the main line which penetrates through the penetrating hole and is knotted is limited by the annular blocking face in a pull-back state, and therefore a knot-free self-locking connecting structure of the main line is formed. The bottom end of the structural column is provided with a cavity, and the sub-line connecting ring is rotatably arranged in the cavity, so that the sub-line can freely rotate by 360 degrees relative to the structural column in use. The structure can improve the connection strength, simplify the operation and improve the anti-winding performance, and is suitable for various fishing environments.

Description

Technical Field

[0001] This utility model relates to the technical field of fishing tackle manufacturing, specifically to a knotless figure-eight swivel for connecting the main line. Background Technology

[0002] Traditional fishing rigs typically use knots tied to small accessories like swivels to secure the main line and leader. However, this knotting method has significant drawbacks. First, knotting significantly weakens the line's tensile strength, often leaving only about half of its original strength at the knot, resulting in reduced load-bearing capacity. Knots also create stress concentration, making the line prone to breakage under the force of a large fish's charge or repeated pulling. Second, knotting is cumbersome and difficult to do quickly in wet or poorly lit environments, making it inconvenient to use. Furthermore, the traditional swivel structure, with its rigid metal rings at both ends, lacks flexibility once the main and leader lines are secured. When a fish spins or thrashes violently in the water, the traditional connection's inability to rotate freely can cause the leader line to entangle with the main line, resulting in high-frequency bending and wear, increasing the risk of breakage. These drawbacks are even more pronounced in complex water environments such as turbulent currents and strong undercurrents, easily leading to broken lines and lost fish, failing to meet the demands for high-strength, safe, and reliable use. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the above-mentioned shortcomings of the existing figure-eight ring connection method and provide a figure-eight ring for main line knotless connection, which can firmly connect the main line without knotting and reduce entanglement when subjected to dynamic load.

[0004] Therefore, the present invention provides the following technical solution:

[0005] A type of figure-eight ring that can be connected without knots.

[0006] include:

[0007] A hollow cap with a through-hole at the top;

[0008] A structural column, wherein a sub-line connecting ring is rotatably provided at the bottom end of the structural column;

[0009] Connecting column, used to connect the hollow cap to the structural column to form an integral structure;

[0010] The perforation is aligned with the center of the conical surface, and the bottom surface of the hollow cap is provided with an annular blocking surface with an inner diameter larger than that of the perforation, so that the knot of the main line that passes through the perforation and is knotted is limited by the annular blocking surface in the pull-back state, thereby forming a knotless self-locking connection structure of the main line.

[0011] The bottom end of the structural column is provided with a cavity, and the sub-line connecting ring is rotatably disposed in the cavity, so that the sub-line can rotate freely 360 degrees relative to the structural column during use, thereby avoiding tangling and knotting even when the direction of force on the fishing line changes continuously.

[0012] The diameter of the perforation matches the diameter of the target fishing line, and the size of the perforation matches the mainline knot to form a self-locking function. The inner surface of the perforation is a smooth structure or has a polymer coating to reduce friction and improve protection. Preferably, the clearance between the perforation diameter and the target fishing line diameter is controlled within, for example, 5%, to achieve precise positioning.

[0013] The inner edge of the annular blocking surface is provided with a chamfer or rounded transition section to improve the fit of the fishing line during locking and prevent sharp angles from damaging the fishing line. The chamfer angle is 30° to 45° or transitions with a predetermined radius of curvature, so that the line loop fits the blocking surface without being damaged when tightened, while increasing the resistance to accidental dislodgement.

[0014] To further improve the efficiency of the main line entering the perforation and the smoothness of its pullback, this invention preferably features a conical surface at the top of the structural column. This conical surface is aligned with the center of the perforation, guiding the fishing line into the perforation and conforming it to the annular blocking surface. During insertion or pullback, the main line, guided by the conical surface, can quickly be positioned at the center of the perforation, preventing line deviation or jamming. Especially in field operations, where anglers find it difficult to precisely control the angle of the fishing line, this conical surface effectively improves threading efficiency, reduces the rate of misoperation, and thus enhances ease of use and assembly speed.

[0015] The cavity is cylindrical, and the sub-line connecting ring is provided with a shoulder or limiting ring in the cavity to ensure that it can rotate in both axial and radial directions without dislodging. A gap is left in the cavity to allow for its rotation.

[0016] The hollow cap, connecting column, and structural column are an integrated structure, and the material used is high-strength corrosion-resistant stainless steel.

[0017] The polymer coating is selected from one or more of polytetrafluoroethylene, polyimide, or polyetheretherketone. On the one hand, the coating prevents metal parts from rusting during long-term use in water, ensuring the durability of the device in both freshwater and seawater environments; on the other hand, the coating provides a smooth surface to reduce frictional resistance when the fishing line and connecting ring rotate, further reducing the risk of wear and entanglement.

[0018] In summary, the figure-eight ring provided by this utility model, which allows for knotless connection, has significant advantages over existing technologies:

[0019] Significantly improved connection strength: Since no knots are required, this invention avoids the weakening effect of traditional knots on the fishing line strength, fully preserving the effective tensile strength of the line and significantly reducing the probability of line breakage under impact from large objects. Furthermore, the self-locking structure of the through-hole limiting and the annular blocking surface tightens under tension, ensuring a stable and reliable connection that is not easily loosened.

[0020] The locking method is safe and reliable: This utility model adopts a passive limiting self-locking design, which uses structural geometry to achieve automatic locking of the fishing line without relying on friction or adhesive fixation. Even when the fishing line is wet and slippery or there is mud and sand underwater, the connection will not fail due to insufficient friction; at the same time, no chemical adhesives are involved, ensuring the weather resistance and underwater durability of the connection.

[0021] Excellent anti-tangling performance: The leader line connecting ring of this invention can rotate freely 360° relative to the main body. When a fish swings, rotates, or even impacts in multiple directions after being hooked, the leader line connecting ring can rotate synchronously with the direction of force on the fishing line, actively eliminating rotational torque and preventing the main line and leader line from tangling and knotting. This design performs better than the traditional rigid figure-eight swivel when dealing with active fish species (such as high-speed rotating silver carp and eels), and is also suitable for reliable operation under different fish impact intensities.

[0022] Compact structure and intuitive operation: This utility model cleverly integrates the through-hole limiting structure and the rotating connecting ring into a small main body, resulting in a compact overall structure that does not increase the volume of the fishing line. When in use, the angler only needs to thread the fishing line end through the through-hole and tighten it to complete the connection. The operation is simple and intuitive, requiring no complicated knotting skills. Assembly can be completed quickly even at night or when using gloves, improving convenience in actual fishing.

[0023] Detailed design enhances durability: Precise matching of the through-hole size to the line diameter and the smooth transition of the inner edge of the blocking surface ensure a secure lock-on while minimizing wear under stress, extending the lifespan of the fishing line and connector. Combined with the corrosion-resistant and abrasion-reducing properties of the special polymer coating, this design maintains stable performance even after long-term use in complex water conditions (such as saltwater, highly acidic or alkaline water, or muddy water), and is not prone to rust or aging. The abrasion-reducing properties of the coating also make the leader ring rotate more smoothly, reducing wear and noise during frequent casting and reeling.

[0024] Wide applicability: This figure-eight swivel connector is compatible with fishing lines of different materials and diameters, including nylon monofilament lines and braided PE lines. The knotless connection method is particularly suitable for high-strength PE braided lines, avoiding the low tensile strength problem of knots in such lines. Furthermore, this device can be applied to various fishing methods, including freshwater fishing, sea fishing, and lure fishing, and is suitable for a wide range of target fish, from small to large. In complex conditions such as fast-flowing waters, areas with obstacles, or competitive fishing, the high-strength, tangle-free connection method provided by this invention offers significant advantages, ensuring the reliability and safety of the fishing rig.

[0025] In summary, this utility model, through innovative structural design, achieves a knotless, high-strength connection between the fishing line and the figure-eight swivel, significantly improving the shortcomings of traditional connection methods in terms of strength, fatigue resistance, and anti-tangling. It has the advantages of simple and compact structure, safe and efficient use, and strong adaptability, demonstrating outstanding progress and creativity. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below with reference to the accompanying drawings, in which:

[0027] Figure 1 This is a three-dimensional structural diagram of a figure-eight ring that can be connected without knots according to the present invention;

[0028] Figure 2 for Figure 1 A side view of the figure-eight ring structure shown;

[0029] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the figure-eight ring shown;

[0030] Figure 4 This is a schematic diagram showing the main thread being threaded and knotted to form a self-locking state.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1—Hollow hat;

[0033] 2—Perforation;

[0034] 3—Structural columns;

[0035] 4—Conical surface;

[0036] 5—Sub-line connecting ring;

[0037] 6—Connecting column;

[0038] 7—Annular blocking surface;

[0039] 8—Cavity;

[0040] 9—Polymer coating;

[0041] 10—Main Storyline;

[0042] 11—End;

[0043] 12 - Chamfered transition area. Detailed Implementation

[0044] The following describes in detail an embodiment of the figure-eight loop with a knotless mainline connection according to the present invention, with reference to the accompanying drawings. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0045] like Figures 1 to 4 As shown, the figure-eight loop with knotless connection of the main line provided by this utility model is as follows:

[0046] I. Structural Composition

[0047] This device includes a hollow cap 1 with a circular perforation 2 at its top for the main line 10 to pass through. The perforation 2 passes through the hollow cap and is located at the center of the axis. Its inner diameter is slightly smaller than the outer diameter of the knot 11 after the fishing line is knotted, so as to form a limiting function. The inner wall of the perforation 2 is preferably provided with a polymer coating 9, such as polytetrafluoroethylene or other low-friction, high-corrosion-resistant materials, to reduce wear during threading and improve durability.

[0048] The bottom surface of the hollow cap 1 is provided with an annular blocking surface 7, which is used to physically limit the knot 11 after knotting, thereby realizing the "self-locking connection" state of the main line. Preferably, the inner edge of the blocking surface 7 is provided with a chamfered or rounded transition section 12, the angle of which is controlled between 30° and 45° or has a curvature radius of 1 to 2 mm, so as to improve the fit stability of the knot when tightened and avoid cutting the line.

[0049] A structural column 3 is connected to the bottom of the hollow cap 1. The top of the structural column 3 is provided with a conical surface 4 for guiding the threading. The conical surface is aligned with the center of the through hole 2, which helps to guide the main line during the threading and pulling process.

[0050] The hollow cap 1 and the structural column 3 are connected by the connecting column 6 to form an integral injection-molded or die-cast structure to enhance strength.

[0051] The bottom of the structural column 3 is hollow, forming a cavity 8, and a rotatable sub-line connecting ring 5 is provided in the cavity. The connecting ring is installed in the cavity by means of a pin, a ring shoulder or a limiting groove structure to ensure that it can rotate freely around the axis within a 360° range. It is used to connect the sub-line, counteract the torsional force of the fish during fishing, and prevent the sub-line from getting tangled in the main line.

[0052] The recommended perforation size is to leave a clearance of 0.05~0.1mm based on the wire diameter to ensure that the joint is effectively blocked after being pulled back.

[0053] The polymer coating thickness is controlled at 10~50μm, which is both corrosion-resistant and does not affect the smoothness of threading.

[0054] Hollow caps, connecting columns, and structural columns are preferably made of high-strength stainless steel, titanium alloy, or engineering plastic materials, which combine strength and weather resistance.

[0055] II. Instructions for Use

[0056] Main thread insertion and knotting:

[0057] The angler threades the main line 10 through the hole 2 until its end protrudes from the bottom of the hollow cap 1. Then, a knot is tied at the end of the main line to form a figure-eight knot or a single knot 11, the outer diameter of which should be larger than the diameter of the hole 2.

[0058] Pull-back creates self-locking:

[0059] The angler then pulls the other end of the main line, causing the knot 11 to be pulled back to the annular blocking surface 7 and locked in the limiting space between the outlet of the perforation 2 and the blocking surface 7. Due to the combination of size design and chamfered structure, the knot will stably fit against the blocking surface to form a self-locking state, without the need for additional auxiliary fixation.

[0060] Trim the end of the thread:

[0061] Excess thread ends can be left 1-2mm before being cut off to avoid interfering with the transmission of tension in the main line, while ensuring the integrity of the knot structure.

[0062] Sub-line connection and rotation:

[0063] The leader line is connected to the leader line connecting ring 5 by knotting, binding, or quick-release buckles. Since the leader line connecting ring 5 can rotate freely, when the fish struggles violently or rotates at high speed during fishing, the connecting ring will rotate synchronously with the direction of the force, effectively releasing the torsional torque and preventing the main leader line from tangling.

[0064] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A figure-eight loop with a knotless mainline connection, characterized in that, include: A hollow cap with a through-hole at the top; A structural column, wherein a sub-line connecting ring is rotatably provided at the bottom end of the structural column; Connecting column, used to connect the hollow cap to the structural column to form an integral structure; The bottom surface of the hollow cap is provided with an annular blocking surface with an inner diameter larger than that of the perforation, so that the knot of the main line that passes through the perforation and is knotted is limited by the annular blocking surface in the pull-back state, thereby forming a knotless self-locking connection structure of the main line. The bottom end of the structural column is provided with a cavity, and the sub-line connecting ring is rotatably disposed in the cavity, so that the sub-line can rotate freely 360 degrees relative to the structural column during use.

2. The figure-eight ring according to claim 1, characterized in that: The diameter of the perforation matches the diameter of the target fishing line, and the size of the perforation matches the size of the main line knot to form a limiting self-locking function. The inner surface of the perforation has a smooth structure or is coated with a polymer coating to reduce friction and improve protection.

3. The figure-eight ring according to claim 1, characterized in that: The inner edge of the annular blocking surface is provided with a chamfered or rounded transition section to improve the fit of the fishing line when locking and prevent sharp angles from damaging the fishing line.

4. The figure-eight ring according to claim 1, characterized in that: The top of the structural column is provided with a tapered surface, and the perforation is aligned with the center of the tapered surface to guide the wire smoothly into the perforation and fit against the annular blocking surface during the main wire threading and pullback process.

5. The figure-eight ring according to claim 1, characterized in that: The cavity is a cylindrical cavity, and the sub-line connecting ring is provided with a shoulder or a limiting ring in the cavity to ensure that it can rotate in both the axial and radial directions without coming out.

6. The figure-eight ring according to claim 1, characterized in that: The hollow cap, connecting column, and structural column are an integrated structure, and the material used is high-strength corrosion-resistant stainless steel.

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