A segmented connection structure for a fishing lure

Abstract

The utility model discloses a kind of fish bait segmented connection structure, it is related to bionic fish bait technical field.Aiming at the low degree of freedom of existing fish bait tail swing, the problem of stress concentration in the bending place of connecting structure, fish body section and fish tail section are connected by special connecting structure.The structure includes connecting ring and M type wire parts: connecting ring is equipped with hanging ring and symmetrical left and right connecting ring fixed shaft, fixed shaft is embedded in the fixed groove of fish body section end;M type wire parts are equipped with symmetrical left and right hanging ring and fixed shaft, and fixed shaft is embedded in fish tail section first end fixed groove.Connecting ring and the stress ring and fixed shaft of special wire part are all equipped with arm parallel to stress direction, for solving stress concentration problem.Hanging ring and hanging ring vertical set link, there is gap between hanging ring and hanging ring, form a kind of structure similar to "cross universal", so that fish tail realizes multidirectional free swing.V type tongue plate is welded at the head of fish body section, and tip end is upward to enhance left and right vibration amplitude.

Description

Technical Field

[0001] This utility model relates to the field of biomimetic fish bait technology, and in particular to a segmented connection structure for fish bait. Background Technology

[0002] Fish bait is the food used to lure fish when fishing. Based on the principle of attracting fish, fish bait can be divided into real bait and artificial bait. Artificial bait, also known as simulated bait or artificial lure, is a small device made of plastic, metal, or other materials that resembles small fish, shrimp, and insects. When fishing, the angler manipulates it to make it appear like a natural living creature in the water, enticing predatory fish to bite. Unlike traditional real bait, artificial bait is now widely used in fishing, and its durability and stability are highly valued. Multi-section artificial bait is widely used, and the connecting structure is its core component.

[0003] For example, Chinese Patent Application No. CN202421974945.9 / Publication No. CN223040815U disclosed a lure hook with a flexible connection structure in 2024. The lure includes a simulated fish body with a flexible connection structure at its front end, through which a lip plate is connected. This connection structure cannot adjust the angle of the fish's tail movement, resulting in limited freedom of movement. It cannot adapt to the swimming posture requirements under different water flow speeds.

[0004] Chinese Patent Application No. CN202420311892.6 / Publication No. CN221769122U, published in 2024, discloses a detachable and reusable lure connection structure and fishing tackle. The structure includes an upper frame and a lower frame, wherein the upper and lower frames are detachably connected on both sides or rotatably connected on one side. When the hook connected to the detachable connection between the upper and lower frames gets snagged, the fishing line pulls the lure to achieve a rated detachment force between the upper and lower frames, causing the lure to detach / separate from the upper and lower frames and be retrieved. However, this connection structure can cause stress concentration at bending points when the upper and lower frames are under tension, easily leading to deformation or breakage of the connection structure. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of low freedom of movement of the fishtail by connecting the connecting ring and the wire with the circular hole; and to solve the problem of stress concentration caused by the right-angle transition between the bent fixed shaft and the force ring by designing an arm perpendicular to the force direction between the connecting ring and the force ring and the fixed shaft, thus avoiding the breakage of the connection structure.

[0006] A further objective of this invention is to address the problem of insufficient biomimicry in fish bait by employing a V-shaped tongue design.

[0007] To achieve the above objectives, this utility model discloses a two-section biomimetic fish bait with a special connecting structure, comprising a fish body section and a fish tail section. The fish body section and the fish tail section are connected to each other by connecting rings and line components; the end of the fish body section is provided with two connecting ring fixing grooves; the beginning of the fish tail section is provided with two line component fixing grooves.

[0008] Preferably, the connecting ring is provided with a hanging ring, which extends to one side to form the left arm and left fixed shaft of the connecting ring, and extends to the other side to form the right arm and right fixed shaft of the connecting ring.

[0009] Preferably, the wire component has a left hanging ring and a right hanging ring. The left hanging ring and the right hanging ring extend to one side to form the left arm and the left fixed shaft of the wire component, and extend to the other side to form the right arm and the right fixed shaft of the wire component, respectively. The left hanging ring and the right hanging ring extend towards the middle to form a fixed ring.

[0010] Preferably, both the connecting ring and the wire are symmetrical structures.

[0011] Preferably, the hanging ring is perpendicularly connected to the left or right hanging ring, with a gap between the hanging ring and the hanging ring, forming a structure similar to a "cross universal joint", which can increase the freedom of movement of the fish tail.

[0012] Preferably, the left and right fixed axes of the connecting ring are collinear and are embedded in the connecting ring fixing groove to fix the connecting ring.

[0013] Preferably, the left and right fixing axes of the wire component are parallel to each other and are embedded in the wire component fixing groove for fixing the wire component.

[0014] Preferably, the fish body segment (1) and the fish body segment (2) have a streamlined structure, which can reduce resistance.

[0015] Preferably, the head of the fish body segment (1) is provided with a tongue plate (3), which is a V-shaped structure with the tip pointing upwards. It is ultrasonically welded to the head of the fish body segment (1). The V-shaped tongue plate will vibrate from side to side when impacted by water flow, further increasing the biomimetic effect.

[0016] Preferably, the head, abdomen and tail of the fish body are each provided with a ring for connecting the fishhook and the fishing line.

[0017] Compared with existing technologies, this invention employs a two-section biomimetic fish bait with a special connecting structure. The beneficial effects of this invention are as follows.

[0018] By connecting the connecting ring and the line through their circular holes, a gap is created between them during lure movement, forming a "cross-shaped universal joint" structure. This increases the freedom of movement of the fish's tail, enhancing its biomimetic qualities. Furthermore, by designing an arm perpendicular to the force direction between the connecting ring and the force-bearing ring and the fixed shaft, stress is dispersed within this arm during force application. This effectively alleviates stress concentration caused by the right-angle transition between the bent fixed shaft and the force-bearing ring, preventing breakage of the connection structure. A further objective of this invention is to increase the lateral vibration amplitude of the lure by employing a V-shaped tongue, resulting in a stronger fish-attracting effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a longitudinal sectional view of the overall structure of this utility model.

[0021] Figure 3 This is a cross-sectional view of the overall structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the overall connection structure of this utility model.

[0023] Figure 5 This is a schematic diagram of the connecting ring in the connection structure of this utility model.

[0024] Figure 6 This is a schematic diagram of the connecting components in the connection structure of this utility model.

[0025] Figure 7 This is a schematic diagram of the tongue plate structure of this utility model.

[0026] Diagram Explanation: 1: Fish body segment, 2: Fish tail segment, 11: Fixing groove 1, 2: Fish tail segment, 21: Fixing groove 2, 3: Tongue plate, 4: Connecting ring, 41: Hanging ring, 42-1: Left arm of connecting ring, 42-2: Right arm of connecting ring, 43-1: Left connecting ring fixing shaft, 43-2: Right connecting ring fixing shaft, 5: Line component, 51-1: Left hanging ring, 51-2: Right hanging ring, 52-1: Left arm of line component, 52-2: Right arm of line component, 53-1: Left line component fixing shaft, 53-2: Right line component fixing shaft. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings.

[0028] Example 1: As Figure 1 and Figure 6As shown, this embodiment discloses a two-section biomimetic lure with a special connection structure. Its core components include a fish body section 1, a fish tail section 2, a lip plate 3, a connecting ring 4, and a line component 5. The components are combined into a highly durable and highly biomimetic whole through structural design and assembly processes.

[0029] In this invention, the fish body segment 1 and the fish tail segment 2 constitute the main outline of the biomimetic bait, and the overall structure of the bait is streamlined. The core advantage of this streamlined structure lies in minimizing the bait's resistance in the water. When the bait is dragged in the water, the water flow smoothly transitions along its smooth, edgeless surface, avoiding large-scale turbulence and eddies, thus ensuring efficient power transmission. This allows anglers to achieve longer casting distances and smoother line retrieval with less force. More importantly, low resistance means that more energy is used to drive the bait's own movement, rather than being consumed in overcoming water resistance, which is a significant improvement in maneuverability.

[0030] The fish body section 1 and the fish tail section 2 can be made of high-strength, corrosion-resistant ABS engineering plastic or environmentally friendly soft rubber (such as TPU, TPE) using precision injection molding to create a symmetrical first and second half-shell. The first and second half-shells are connected to a long shaft via slots to form a sealed cavity. The connection method between the first and second half-shells includes, but is not limited to, fitting, ultrasonic welding, and bonding, and can be adjusted according to actual conditions, as long as a seamless connection between the first and second shells is ensured. The sealed cavity prevents problems such as density changes and rusting of parts caused by water ingress, thus extending the service life of the bionic fish bait.

[0031] The first and second shells are not entirely hollow; instead, they are reinforced with several ribs. The primary function of these ribs is to ensure that the shells do not deform or crack under water pressure, impacts, or even attacks from target fish, maintaining the integrity of the design. Secondly, precise counterweight compartments are pre-installed inside. By inserting steel balls of varying weights or numbers and precisely matching them with the buoyancy created by the internal cavities, the overall specific gravity of the bait can be accurately set to be the same as or similar to that of seawater or river water. This not only adapts to different fishing depths but also allows adjustment of the bait's posture in the water to suit different fishing methods.

[0032] The core design of this utility model lies in the special connection structure that connects the fish body segment 1 and the fish tail segment 2. This structure is not a simple hinge or swivel, but a composite joint system with multi-dimensional mobility, consisting of two symmetrical connecting rings 4 and an M-shaped line member 5.

[0033] like Figure 5As shown in the embodiment of this application, a connection structure for a two-section biomimetic lure includes: a connecting ring 4 and a line 5.

[0034] like Figure 2 As shown, the connecting ring 4 is provided with a hanging ring 41, which extends downward from both ends to form a left arm 42-1 and a right arm 42-2 of the connecting ring; the left arm 42-1 extends to the left to form a left fixed shaft 43-1 of the connecting ring; and the right arm 42-2 extends to the right to form a right fixed shaft 43-2 of the connecting ring.

[0035] like Figure 2 As shown, the left arm 42-1 and the right arm 42-2 are parallel to each other; the left connecting ring fixing shaft 43-1 and the right connecting ring fixing shaft 43-2 are collinear.

[0036] The connecting ring 4 is integrally bent from high-elasticity stainless steel wire. Its top hanging ring 41 is a standard circular ring, serving as the core pivot for movement. The key lies in the "arm" structure (42-1, 42-2) connecting the hanging ring 41 to the fixed shafts (43-1, 43-2). Traditional connectors often have a straight shaft welded directly under the circular ring; the right-angle transition becomes a stress concentration point under water flow impact and intense tension, easily leading to metal fatigue and even fracture. The left arm 42-1 and right arm 42-2 of this invention cleverly extend the force transmission path and change the force direction from a single pull to a slight bending of the "arms," ​​thereby evenly distributing stress throughout the entire component and greatly improving tensile strength and fatigue resistance. The left fixed shaft 43-1 and the right fixed shaft 43-2 of the connecting ring are designed to be collinear, which allows them to be stably mounted in the two connecting ring fixing grooves 11 at the end of the fish body section 1, just like a pair of bridge piers, ensuring a stable and smooth connection.

[0037] like Figure 3 As shown, the top of the wire component 5 is provided with a left hanging ring 51-1 and a right hanging ring 51-2. The left hanging ring 51-1 and the right hanging ring 51-2 extend downward from both ends to form the left arm 52-1 and the right arm 52-2 of the wire component, respectively. The left arm 52-1 and the right arm 52-2 extend outward to form the left fixed shaft 53-1 and the right fixed shaft 53-2 of the wire component, respectively. The left hanging ring 51-1 and the right hanging ring 51-2 extend towards the middle and bend to connect, forming a fixed ring 54.

[0038] like Figure 3 As shown, the wire component 5 is M-shaped and has a symmetrical structure; the left hanging ring 51-1 and the right hanging ring 51-2 are symmetrical about the central axis.

[0039] like Figure 3As shown, the left arm 52-1 and the right arm 52-2 of the wire component are parallel to each other; the left fixed axis 53-1 and the right fixed axis 53-2 of the wire component are parallel to each other; the left fixed axis 53-1 and the right fixed axis 53-2 of the wire component are both perpendicular to the plane formed by the wire component 5.

[0040] The aforementioned wire component 5 is another major innovation of this utility model. Its M-shaped structure is not merely for aesthetics, but rather a manifestation of functional orientation. The top left hanging ring 51-1 and right hanging ring 51-2 are responsible for vertically connecting with the hanging ring 41 of the connecting ring 4, forming the first movable dimension. The downward-extending left arm 52-1 and right arm 52-2 of the wire component also serve to distribute stress. The left and right fixed shafts 53-1 and 53-2 of the wire component are parallel to each other and are embedded in the wire component fixing groove 21 at the beginning of the fishtail section 2. This dual-point fixing method provides a stable and firm base for the swing of the fishtail, preventing the shaking and twisting that may occur with single-point fixing. The fixing ring 54 is located in the middle of the wire component 5, connecting the left and right parts into a highly integrated elastic mechanism. When the wire component 5 receives axial tension, the fixing ring 54 acts as a support point to prevent the wire component 5 from deforming. When the fish tail is subjected to lateral and longitudinal forces, the entire M-shaped structure acts like a small spring system, absorbing and releasing energy through its own elastic deformation. This gives the fish tail a high degree of freedom of movement while also buffering the impact of extreme external forces on the structure.

[0041] In this invention, the fish body segment 1 and the fish tail segment 2 are connected by a special connection structure, which consists of, as shown in the figure below. Figure 2 The two connecting rings 4 shown and as follows Figure 3 The line components 5 shown are interlocked perpendicularly to form a multi-directional hinge point. In water, this connection point is not locked but has a slight gap for movement. When the angler uses the rod and line to give the bait twitching, pausing, or other actions, the impact of the water flow on the V-shaped lip 3 and the fish's body and tail is complex and varied. This cross joint allows the tail segment 2 to simulate left and right deflection relative to the body segment 1, simulate up and down nodding when pecking or diving, and even simulate slight axial rotation when struggling and twisting. This complex movement mode breaks the limitations of single-planar oscillation, producing an extremely realistic, frantic, and unpredictable swimming posture, which is an irresistible temptation for predatory fish.

[0042] Of course, the connector of this utility model can be composed of multiple connecting rings and a wave-shaped wire or multiple connecting rings and multiple shaped wires, in addition to the two connecting rings 4 and one shaped wire 5 mentioned above. It is not limited to a specific combination form, as long as it can satisfy the function of connecting the fish body and the fish tail together and allowing the fish tail to swing freely.

[0043] In this utility model, the end of the fish body segment 1 is provided with the following... Figure 1 The connecting ring 4 shown has a corresponding hole and groove, which is used to fix and place the connecting ring 4; the first end of the fishtail section is provided with... Figure 1 The hole and slot shown are used to fix and place the profile member 5.

[0044] like Figure 2 or Figure 3 As shown, the connecting ring 4 and the wire 5 correspond to each other.

[0045] The connecting ring 4 and the wire 5 are respectively parallel to each other, perpendicular to each other, and interchangeable in shape; the connecting ring 4 and the special wire 5 are respectively not absolutely identical, not absolutely parallel or perpendicular, but only relatively similar.

[0046] The perpendicularity of the connecting ring 4 and the special wire piece 5 is defined by their annular holes being perpendicular to each other and interconnected; the parallelism of the two is defined by their fixed axes being parallel to each other.

[0047] In this invention, the connecting ring 4 is integrally bent from stainless steel wire with a diameter of 0.7-0.9 mm, with a total length of 5-6 mm, a width of 4-5 mm, a top arc diameter of 3-4 mm, and a bottom opening gap of less than 0.1 mm; the M-shaped special wire component 5 is integrally bent from stainless steel wire with a diameter of 0.7-0.9 mm, with a total length of 9-10 mm, a width of 6-7 mm, and a top arc diameter of 4-5 mm. Of course, the above dimensions are for illustrative purposes only and should not be construed as defining features of this product; similar product designs with dimensions different from the aforementioned range are also considered similar products.

[0048] The connecting ring 4 and the special wire component 5 can be formed using various metal processing techniques, including but not limited to bending, stamping, and die casting. The goal is to efficiently and accurately process the required curved components while preserving the elasticity and toughness of the material.

[0049] The connecting ring 4 and the wire 5 are interchangeable on the left and right, and the positions of the connecting ring 4 and the dedicated wire 5 are interchangeable.

[0050] In this invention, a tongue plate 3 is provided at the head of the fish body segment 1. The tongue plate 3 abandons the traditional flat or single-curved surface design, adopting a V-shaped structure with the tip pointing upwards. Its material can be transparent polycarbonate (PC) to increase concealment. It is precisely embedded into the groove at the head of the fish body segment 1 through a square protrusion at the tail end, and permanently fixed by ultrasonic welding. During the dragging of the bait, the water flow impacts the two sides of the V-shape, generating two eddies and lift forces in opposite directions with constantly changing intensity. These forces drive the bait head to produce a high-frequency, small-amplitude left-right tremor. This tremor is transmitted through the fish body to the tail joint, combining with the tail's own swaying, making the entire bait, from head to tail, full of a sense of "life," like a small fish struggling, combining visual allure with the allure of water vibration signals, greatly stimulating the target fish's attack instinct.

[0051] In this invention, the head and abdomen of the first and second half shells of the fish body section, and the tail of the first and second half shells of the fish tail section are respectively provided with holes and grooves that cooperate with the figure-eight rings. The holes and grooves are used to fix and place the figure-eight rings. The first half shell has a long shaft protrusion in the middle of the hole and groove, and its diameter is smaller than the diameter of the hole of the figure-eight ring, so that the first and second half shells can be interlocked through the long shaft.

[0052] like Figure 6 As shown, rings are respectively provided at the head, abdomen, and tail of fish body segment 1 and fish tail segment 2, except as... Figure 1 Besides the figure-eight swivel shown, a three-pronged swivel can also be used, as long as it meets the usage requirements. The head swivel connects to the main line and is the starting point for control and force; the belly swivel is the core position for suspending the hook, and its design ensures the effective transmission of force after a fish is hooked; the tail swivel can be used to attach auxiliary hooks or bait decorations to increase the attractiveness.

[0053] In summary, this invention solves the problems of low freedom of movement in fish tail swing and low structural strength by using a connecting ring and a special line component to form a "cross-shaped universal joint" connection structure. The V-shaped tongue design allows the bait to vibrate during fishing due to water flow. Furthermore, the shell design, sealing process, and counterweight system ensure performance stability, sealing, and adjustability. Overall, this forms a complete and synergistic system solution.

Claims

1. A segmented connection structure for fish bait, comprising a fish body segment (1) and a fish tail segment (2), characterized in that, The fish body section (1) and the fish tail section (2) are connected to each other by a connecting ring (4) and a wire (5); the end of the fish body section (1) is provided with several connecting ring fixing grooves (11); the beginning of the fish tail section (2) is provided with several wire fixing grooves (21).

2. The segmented connection structure for fish bait according to claim 1, characterized in that: The connecting ring (4) is provided with a hanging ring (41), which extends to one side to form the left arm (42-1) and the left fixed shaft (43-1) of the connecting ring, and extends to the other side to form the right arm (42-2) and the right fixed shaft (43-2) of the connecting ring.

3. The segmented connection structure for fish bait according to claim 1, characterized in that: The wire component (5) is provided with a left hanging ring (51-1) and a right hanging ring (51-2). The left hanging ring (51-1) and the right hanging ring (51-2) extend to one side to form the left arm (52-1) and the left fixed shaft (53-1) of the wire component, and extend to the other side to form the right arm (52-2) and the right fixed shaft (53-2) of the wire component. The left hanging ring (51-1) and the right hanging ring (51-2) extend towards the middle to form a fixed ring (54).

4. The segmented connection structure for fish bait according to claim 1, characterized in that: Both the connecting ring (4) and the wire (5) are left-right symmetrical structures.

5. A segmented connection structure for fish bait according to claim 2 or 3, characterized in that: The hanging ring (41) is perpendicularly connected to the left hanging ring (51-1) or the right hanging ring (51-2).

6. A segmented connection structure for fish bait according to claim 1 or 2, characterized in that: The left fixed shaft (43-1) and the right fixed shaft (43-2) of the connecting ring are collinear and are embedded in the connecting ring fixing groove (11).

7. A segmented connection structure for fish bait according to claim 1 or 3, characterized in that: The left fixing shaft (53-1) and the right fixing shaft (53-2) of the wire component are parallel to each other and are embedded in the wire component fixing groove (21).

8. The segmented connection structure for fish bait according to claim 1, characterized in that: The fish body segments (1) and (2) are generally streamlined.

9. The segmented connection structure for fish bait according to claim 1, characterized in that: The head of the fish body segment (1) is provided with a tongue plate (3), which has a V-shaped structure with the tip pointing upwards and is connected to the head of the fish body segment (1).

10. The segmented connection structure for fish bait according to claim 1, characterized in that: The head, abdomen and tail of the fish body segment (1) and the tail of the fish tail segment (2) are each provided with a ring.

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