A multi-chambered biomimetic fishing lure

Abstract

The utility model discloses a kind of multi-chamber bionic fish bait, it is related to fishing gear technical field, including fish bait main part;Fish bait main part is connected into streamline whole by fish bait front end and fish bait rear end of embedding symmetrical tongue plate, fish bait rear end moves relative to fish bait front end;Fish bait front end is empty in upper and heavy in lower, first bottom cavity and second bottom cavity are equipped with different number of counterweight, its moving direction is different with limit direction;Tongue plate is connected by interference fit with the clamping groove of fish bait front end through its clamping post, and eight-character ring passes through the secondary locking of tongue plate formation by tongue plate opening slot;Fish bait main part is connected by fish bait front end and fish bait rear end through omega ring and special line piece hinged component by relatively movable.The utility model is limited by the movement of multi-cavity structure and differentiating counterweight steel ball, can effectively avoid fish bait unstable under external interference movement, strengthen fish bait in water up and down swing amplitude, turning realistic swimming posture and structure impact resistance.

Description

Technical Field

[0001] This utility model relates to the field of fishing gear technology, specifically to a multi-chamber biomimetic fish bait with a dynamic counterweight system. Background Technology

[0002] With the rapid development of recreational fishing and competitive fishing, biomimetic fish baits have become a core product in the fishing equipment market due to their highly effective fish-attracting properties. Currently, the mainstream biomimetic fish baits mainly include three categories: hard plastic baits, soft plastic baits, and composite material baits. Their technical principles rely on biomimetic design, surface coating processes, and internal weighting structures to simulate the swimming posture of real fish.

[0003] Patent CN217722462U provides a multi-functional simulated fish lure technology solution, which contains a counterweight ball inside and swings through a hinged tail. It also features a front slot and top and front double fishing line connecting rings to accommodate interchangeable lip plates, fin plates, and tail accessories, integrating the functions of VIBs, minnows, pencils, and other lures into one unit. However, the internal counterweight of this solution is fixed and cannot be disassembled. The multi-functional design results in a complex structure. The lip plates and other plug-in components are prone to loosening and loss in actual use. Foreign objects and algae can easily get entangled at the hinges, accelerating wear. The durability of the movable hinge components is insufficient. The multi-shell splicing process seriously affects watertightness and reliability. Furthermore, frequent switching of accessories is cumbersome, making it less practical than a professional single-function lure.

[0004] The above defects stem from the product structure's insufficient adaptability to dynamic environments and the lack of systematic optimization of functional modules. Utility Model Content

[0005] This invention provides a multi-chamber biomimetic fish bait device. By setting a rolling movable counterweight steel ball in the first bottom cavity, the second bottom cavity and the front cavity and implementing differentiated limiting, combined with the internal structure of the fish bait being light at the top and heavy at the bottom, it solves the technical problems of the biomimetic fish bait having a single swimming posture, insufficient naturalness of mimicry and being prone to flipping up and down.

[0006] A further objective of this invention is to solve the technical problems of easy detachment and loss of the detachable tongue plate, inflexible tail swing, and low reliability of the connection structure by using the interference fit between the tongue plate locking post and the locking groove combined with the figure-eight ring penetrating the opening groove to form a double locking mechanism, and by using the Omega ring and the wire sleeve to connect the tail structure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a multi-chamber biomimetic fish bait, comprising a fish bait body, wherein the fish bait body is composed of a fish bait front end and a fish bait rear end connected by a symmetrical tongue plate, forming a streamlined whole, and the fish bait rear end moves relative to the fish bait front end; the fish bait front end is hollow at the top and heavy at the bottom, and is provided with a hollow front cavity at the top and a first bottom cavity and a second bottom cavity at the bottom containing different numbers of counterweights, wherein the movement direction and the limiting direction of the counterweight steel balls in the counterweight cavity are different; the front, middle and rear parts of the fish bait body are provided with figure-eight rings.

[0008] Preferably, the middle part of the tongue plate is an arc transition section, and the upper end is tilted forward, so that the resistance is smaller when throwing in the air and moving horizontally in the water, and the movement trajectory is more stable; when moving up and down, the water splash is larger, which is more likely to attract fish and less likely to trap foreign objects; the tongue plate includes an opening groove and a locking post, and the locking post is embedded in the locking groove at the front end of the bait.

[0009] Preferably, the locking post is a symmetrical quadrangular prism that is narrow at the top and wide at the bottom, with symmetrical concave surfaces on both sides; the locking groove is a groove that is wide at the outside and narrow at the inside, with an internal shape adapted to the locking post; the top of the locking post is provided with a guide slope, which facilitates the locking post to enter the locking groove quickly and accurately, and can be stably embedded in the locking groove in the interlocking state. The locking post and the locking groove form an interference fit, improving assembly efficiency.

[0010] Preferably, the figure-eight swivel at the front of the bait body passes through the opening groove above the lip plate, so that the lip plate can fit against the bait body; when the figure-eight swivel is equipped with fishing line, it can prevent the lip plate from falling off and being lost.

[0011] Preferably, the rear end of the bait is provided with a vertical support plate and a rear cavity. The vertical support plate makes the rear end of the bait more robust and stable, ensuring structural strength.

[0012] Preferably, the first bottom cavity and the second bottom cavity are separated by a figure-eight ring in the middle of the bait body and a front partition and a rear partition; the first bottom cavity is equipped with three counterweight steel balls, and the second bottom cavity is equipped with one counterweight steel ball; the counterweight steel ball is located in the center of the bottom cavity; when the bait body is in a horizontal position, the counterweight steel balls converge at the bottom front end of the bait; when the bait body is subjected to external force, the counterweight steel ball can dynamically roll in response, which facilitates the adjustment of the bait's center of gravity position, so that the bait can present a more natural dynamic effect when moving in the water.

[0013] Preferably, two limiting plates are symmetrically arranged in the first bottom cavity, and a channel is provided between the two limiting plates to accommodate the counterweight steel balls, thereby locking the left and right movement of the three counterweight steel balls, which can only roll back and forth.

[0014] Preferably, the maximum distance that the three counterweight steel balls in the first cavity roll back and forth when subjected to an external force is the sum of the three radii of the steel balls.

[0015] Preferably, the left and right inner walls of the second bottom cavity form a movement space for the counterweight steel ball, the gap between the front and rear inner walls is small, the front and rear rolling distance is small, and it can roll left and right when subjected to external force, with the maximum rolling distance being the distance between the left and right inner walls of the second bottom cavity.

[0016] Preferably, the front end and rear end of the bait are connected by two Omega rings and a special line fitting; the two Omega rings are installed at the front end of the bait, and the special line fitting is inserted into the rear end of the bait; the connection structure is firm and has low friction, so that the tail swings smoothly and continuously in the water, and more realistically simulates the changes in the swimming posture of fish following the changes in water flow.

[0017] Beneficial effects: By setting up the coordinated action of the upper cavity and the lower counterweight cavity movable unit, this utility model can effectively prevent the bait from rolling and overturning under rapid movement or external interference, ensuring the stability and realism of the movement posture.

[0018] This utility model also features an interference fit between the locking post and the locking groove of the tongue plate, and utilizes a figure-eight ring passing through the opening groove of the tongue plate to form a double insurance mechanism, effectively preventing the detachable tongue plate from being easily lost when thrown or attacked.

[0019] The front and rear ends of the bait are connected by Omega rings and special line fittings. At the same time, the vertical support plate inside the rear end of the bait enhances the structural strength, allowing the product to move nimbly while enhancing the overall tensile and impact resistance of the structure, ensuring the overall sturdiness and service life. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of an embodiment of the multi-chamber simulated fish bait of this utility model.

[0021] Figure 2 This is a schematic diagram of the positional structure of an embodiment of the multifunctional simulated fish bait of this utility model.

[0022] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the multifunctional simulated fish bait of this utility model.

[0023] Figure 4 This is a schematic diagram of the tongue plate structure in one embodiment of the multifunctional simulated fish bait of this utility model.

[0024] Figure 5 This is a side view of an embodiment of the multifunctional simulated fish bait of this utility model when the tongue plate is installed.

[0025] Figure 6 This is a front view connection structure diagram of an embodiment of the multifunctional simulated fish bait of this utility model.

[0026] In the diagram: front end of the bait 1, rear end of the bait 2, Omega swivel 3, special line component 4, tongue plate 5, figure-eight swivel 6, front partition 71, rear partition 72, limiting plate 8, support plate 9, first bottom cavity 10, second bottom cavity 11, front cavity 12, rear cavity 13, slot 14, counterweight steel ball 15, opening slot 51, locking post 52. Detailed Implementation

[0027] A multi-chamber biomimetic fish bait, please refer to Figures 1 to 6 The core design concept of this biomimetic fish bait lies in its innovative internal cavity structure, dynamic counterweight system that can respond in different directions, and robust and reliable connection method. It comprehensively simulates the dynamic behavior of baitfish in natural waters, especially mimicking the irregular struggling posture of injured small fish, thereby effectively stimulating the predatory fish's attack desire and increasing the catch rate.

[0028] like Figure 1 As shown, the main body 100 of the multi-chamber biomimetic fish bait is divided into two parts: the front end 1 and the rear end 2. The overall shape presents a streamlined fish body to minimize water resistance. At the front end of the main body 100, an innovative embedded structure is used to symmetrically install a tongue plate 5, which is a key component for controlling the diving depth and generating water splash. High-strength figure-eight swivels 6 are respectively provided at the front, middle and tail of the fish body to connect the fishing line and the hook, forming a complete functional system.

[0029] like Figure 2 and Figure 3 As shown, the internal structure of the lure front end 1 is designed with a "hollow top and heavy bottom" layout. The interior is divided into a hollow front cavity 12 and a first bottom cavity 10 and a second bottom cavity 11 by the mounting base of the figure-eight ring 6 in the middle of the lure body 100 and the front partition 71 and the rear partition 72. The front cavity 12 is a sealed airtight chamber filled with air. The main function of this chamber is to provide stable net buoyancy, ensuring that the lure can be suspended in the water when it is stationary and maintain a natural standby posture with its head slightly raised, simulating the moment when a small fish stops swimming. When it is pulled, this buoyancy will work together with the downward potential of the tongue plate 5 and the counterweight to produce a strong pitching motion.

[0030] The rear end 2 of the bait has a rear cavity 13 inside. This cavity has a larger air space, which can reduce the weight of the tail and make the center of gravity more concentrated in the front, which is conducive to the flexible swing of the tail. An integrally formed vertical support plate 9 is added to the center of the rear cavity. The upper and lower ends of the support plate are firmly connected to the top and bottom walls of the cavity, which greatly enhances the structural rigidity and overall durability of the rear end 2 of the bait, ensuring that this relatively large cavity will not deform or break when subjected to water flow impact and fish attacks.

[0031] like Figure 3As shown, the first cavity 10 and the second cavity 11 are respectively equipped with different numbers of counterweight steel balls 15. In the first cavity 10, two limiting plates 8 are centrally and symmetrically installed on the inner wall of the cavity. The distance between the two limiting plates 8 forms a channel of equal width that can only accommodate three steel balls closely arranged. This structure locks the left and right degrees of freedom of movement of the three counterweight steel balls 15, so that they can only roll synchronously along the front and rear axis in the channel as a whole. The maximum displacement of the rolling is physically limited to approximately the sum of the radii of the three steel balls, thereby generating short and frequent front and rear inertial impacts. The second cavity 11 is separated from the first cavity 10 by a figure-eight ring 6. The second cavity 11 is equipped with a counterweight steel ball 15. The width between its left and right inner walls is much larger than the diameter of a steel ball, providing it with a large space for lateral movement. The left and right rolling displacement is greater than the front and rear rolling displacement.

[0032] When the bait body 100 is in a horizontal position, the counterweight steel balls 15 gather at the bottom of the front end 1 of the bait. When the bait body 100 is affected by the impact of water flow, changes in traction force, and changes in its own swimming posture, it will be in a dynamic process of acceleration, deceleration, turning, and bumping. The three counterweight steel balls 15 in the first bottom cavity 10 are affected by the water flow pulsation and roll back and forth synchronously in the equidistant channel, generating regular reciprocating inertial force. The single counterweight steel ball 15 in the second bottom cavity 11 swings left and right with a large amplitude due to the cavity space characteristics. The composite motion of the two sets of steel balls 15 is superimposed through phase difference, continuously stimulating the high-frequency vibration of the bait body 100 in the pitch and yaw directions. Combined with the large water splash disturbance aroused by the tongue plate 5, it simulates the violent struggle of an injured small fish, significantly enhancing the visual and lateral line stimulation effect on predatory fish.

[0033] like Figure 4 As shown in the structural diagram of the lip plate, the lip plate 5 includes an opening groove 51 and a retaining post 52. The opening groove accommodates the passage of the figure-eight swivel 6, allowing the lip plate 5 to fit snugly against the bait body 100. When the figure-eight swivel 6 is fitted with fishing line, it prevents the lip plate 5 from falling off and being lost. The lip plate 5 has a symmetrical shape and is a composite structure optimized by hydrodynamics. Its middle part is designed as an arc transition section, which can smoothly guide the water flow and reduce the generation of eddies. The upper end of the lip plate 5 is tilted forward, which can ensure sufficient diving depth while minimizing wind resistance during air casting and fluid resistance during underwater movement, ensuring the stability of the movement trajectory. The one-piece molding design of the lip plate 5 can effectively avoid assembly gaps and reduce the risk of foreign objects getting entangled and stuck.

[0034] like Figure 5As shown in the side view when the tongue plate is installed, the locking post 52 on the tongue plate 5 is embedded in the locking groove 14 of the lure front end 1. The locking post 52 adopts a symmetrical quadrangular prism structure that is narrow at the top and wide at the bottom, and its two sides are symmetrical concave structures. The locking groove 14 is a groove that is wide at the outside and narrow at the inside, and its inner cavity shape is precisely matched with the geometric contour of the locking post 52. A guide slope is provided on the top of the locking post 52 to facilitate the quick and accurate insertion of the locking post 52 into the locking groove 14. In the biting state, the locking post 52 can be stably embedded in the locking groove 14, and the two form an interference fit relationship, which significantly improves the assembly efficiency.

[0035] like Figure 6 As shown, this invention abandons the simple single-point hinge. The front end 1 and the rear end 2 of the bait are connected by two Omega rings 3 and a special line 4. The circular ends of the two Omega rings 3 are respectively fitted onto the two circular connection points of the special line 4. The special line 4 is installed inside the rear end 2 of the bait, and one end of the two Omega rings 3 is installed at the rear of the front end 1 of the bait. The two connection points provide better torque balance, making the tail swing smoother and less prone to twisting. The elasticity of the Omega rings themselves allows the tail to receive a flexible rebound force when it swings to the extreme position, simulating the elasticity of the fish tail muscles, making the movement more vivid and natural.

[0036] The vertical support plate 9 is precisely positioned in the middle region of the rear cavity 13, and its upper and lower ends are firmly connected to the inner top and bottom walls of the rear end of the bait 2 through a high-strength connection. The core function of the vertical support plate 9 is to significantly enhance the overall structural strength and stability of the rear end of the bait 2. By optimizing the internal support layout, it significantly improves its bending modulus and torsional stiffness, ensuring that the structure can respond elastically without plastic deformation or permanent deformation when subjected to hydrodynamic loads such as water flow impact, effectively maintaining its shape integrity. At the same time, its surface provides excellent smoothness, significantly reducing motion friction resistance and improving overall performance and durability.

[0037] The front cavity 12 is a sealed cavity. This design allows the bait to gain additional buoyancy in the water, ensuring that it can maintain a vertical suspension posture when stationary. This simulates the natural standby state of small fish in the water. When the fishing line is pulled, the tongue plate 5 is first pressed down by the water resistance, the counterweight steel ball 15 rolls forward, the front end 1 of the bait sinks, and then the buoyancy of the front cavity 12 will make it float up again. This process intensifies the pitching and shoving motion of the bait.

[0038] The surface of the bait body 100 is not absolutely smooth. Instead, based on computational fluid dynamics simulation analysis, biomimetic scale patterns are designed in non-critical flow field areas such as its head and side line. These fine patterns can guide the water flow to flow closely to the surface of the bait when dragged at high speed, delay boundary layer separation, effectively reduce eddy resistance, and make swimming more effortless and smooth. This simulates the biological disturbance field generated when a school of small fish swims, stimulating the predatory instinct of the target fish from another sensory dimension.

[0039] The lure's low center of gravity and high center of buoyancy, with its "heavy on top and light on the bottom" design, constitutes a stable mechanical system. Its internal multi-chamber layout forms a self-stabilizing system based on the relative position of the center of gravity and the center of buoyancy, similar to a roly-poly toy. When impacted by water flow from the side, the front cavity 12 provides a stable center of buoyancy, while the counterweight steel ball 15 inside the bottom cavity forms a movable center of mass. The buoyancy generates a restoring torque, effectively resisting water flow interference and helping the lure maintain its preset head orientation and swimming posture. This avoids the common problem of spinning wildly in flowing water and ensures that the lure's action is always effective.

[0040] This biomimetic fish bait was designed with both freshwater and seawater applications in mind from the outset. The core of its suspension control lies in the delicate balance between the fixed buoyancy provided by the front cavity 12 and the fixed gravity provided by the bottom counterweight system. This balance is crucial because seawater has a density of approximately 1.025 g / cm³. 3 The density of the oxygen is significantly greater than that of fresh water (1.0 g / cm³). 3 According to Archimedes' principle, the buoyancy of a fish bait is greater in seawater than in freshwater.

[0041] When the bait enters the seawater environment, the buoyancy of the bait increases proportionally due to the increased density of the seawater. At this time, the buoyancy will be slightly greater than the weight, and the excess buoyancy will cause the bait to have an upward tendency. However, this tendency will be balanced by the downward pull of the fishing line. In actual fishing, when the angler stops reeling in the line, the bait will not sink to the bottom quickly, but will be able to float more stably in the current water layer. This is crucial for fishing in seabed reef areas, coral areas, or waters with complex obstacles, greatly reducing the risk of snagging. This is an advantage that many traditional sinking lures cannot match.

[0042] For anglers seeking control, the inherent adjustability of this invention is also applicable to marine environments. If it is necessary to adjust the suspension posture or diving response speed in seawater with a specific salinity, simply replace the 15 sets of counterweight steel balls of different weights to finely adjust the weight of the body, thereby accurately matching the density of the local waters and achieving multiple states from negative buoyancy (slow sinking), neutral buoyancy (perfect suspension) to positive buoyancy (stable hovering), to meet the demanding requirements of different target fish species and fishing techniques.

[0043] The working principle and process of this utility model are as follows: When dragged in water, the water flow impacts the tongue plate 5, driving the bait to submerge and begin to sway left and right; the water flow pulsation is transmitted through the surface of the fish body to the internal cavity. The three counterweight steel balls 15 in the first bottom cavity 10 are restricted to rolling synchronously back and forth within the channel formed by the limiting plate 8, generating periodic forward and backward inertial forces. This force excites the bait body 100 to vibrate at high frequency in the pitch direction. The single counterweight steel ball 15 in the second bottom cavity 11 swings left and right with a larger amplitude and irregularity, generating a torque in the yaw direction, inducing the bait body 100 to sway in the yaw direction.

[0044] These two sets of movements superimpose and couple in time and phase, producing a complex and random composite vibration effect that realistically simulates the panicked and unbalanced struggle of a small fish after being injured. The movable connection between the lure's front end 1 and rear end 2, formed by the Omega swivel 3 and the dedicated line 4, further amplifies this vibration and transmits it throughout the lure, making the tail movement more agile and greatly enhancing the realism and unpredictability of the action. The lip plate 5 continuously splashes water during movement, and combined with the amplified sound and amplitude of the internal steel ball, it provides multiple visual and auditory stimuli to predatory fish, effectively increasing their attack desire.

[0045] In summary, this invention, through its multi-chamber dynamic counterweight system, double-safety tongue plate fixing mechanism, and low-friction, high-reliability tail connection system, works together to create a biomimetic fish lure with extremely complex, realistic, and random movements. It not only simulates the swimming of healthy small fish but also remarkably reproduces the struggling state of an injured baitfish. Through multiple stimuli, including visual, water wave vibration, and acoustic (internal steel ball impact sound), it effectively triggers the attack instinct of the target fish species, greatly improving the catch rate.

Claims

1. A multi-chamber biomimetic fish bait, comprising a bait body (100), characterized in that: The bait body (100) is a streamlined whole consisting of a bait front end (1) with an embedded symmetrical tongue plate and a bait rear end (2); the bait front end (1) is hollow at the top and heavy at the bottom, and has a hollow front cavity (12) at the top and a first bottom cavity (10) and a second bottom cavity (11) with counterweights at the bottom. The front, middle and rear parts of the bait body (100) are equipped with figure-eight rings (6).

2. The multi-chamber biomimetic fish bait according to claim 1, characterized in that: The tongue plate (5) has a rounded transition section in the middle and the upper end is inclined forward; the tongue plate (5) includes an opening groove (51) and a locking post (52), and the locking post (52) is embedded in the locking groove (14) of the front end (1) of the bait.

3. The multi-chamber biomimetic fish bait according to claim 2, characterized in that: The locking post (52) is a symmetrical quadrangular prism that is narrow at the top and wide at the bottom, with symmetrical concave surfaces on both sides; the locking groove (14) is a groove that is wide at the outside and narrow at the inside, with an internal shape that fits the locking post (52); the top of the locking post (52) is provided with a guide slope.

4. The multi-chamber biomimetic fish bait according to claim 1 or 2, characterized in that: The figure-eight ring (6) at the front of the bait body (100) passes through the opening groove (51) above the tongue plate (5).

5. The multi-chamber biomimetic fish bait according to claim 1, characterized in that: The rear end (2) of the bait is provided with a vertical support plate (9) and a rear cavity (13).

6. The multi-chamber biomimetic fish bait according to claim 1, characterized in that: The first bottom cavity (10) and the second bottom cavity (11) are separated by the figure-eight ring (6) in the middle of the bait body (100) and the front partition 71 and the rear partition 72; the first bottom cavity (10) is equipped with three counterweight steel balls (15) and the second bottom cavity (11) is equipped with one counterweight steel ball (15); the counterweight steel ball (15) is located in the center of the bottom cavity.

7. The multi-chamber biomimetic fish bait according to claim 6, characterized in that: Two limiting plates (8) are symmetrically arranged in the first bottom cavity (10), and a channel is provided between the two limiting plates (8) to accommodate the counterweight steel ball (15).

8. The multi-chamber biomimetic fish bait according to claim 7, characterized in that: When the three counterweight steel balls (15) in the first bottom cavity (10) are subjected to an external force, the maximum distance they roll back and forth is the sum of the three radii of the steel balls.

9. The multi-chamber biomimetic fish bait according to claim 6 or 7, characterized in that: The left and right inner walls of the second bottom cavity (11) form a motion space to accommodate the rolling of one of the counterweight steel balls (15).

10. The multi-chamber biomimetic fish bait according to claim 1 or 5, characterized in that: The front end (1) and rear end (2) of the bait are connected by two Omega rings (3) and a special line (4); the two Omega rings (3) are installed on the front end (1) of the bait, and the special line (4) is inserted into the rear end (2) of the bait.

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