A portable catapult fishing device and method of use

Abstract

The present application relates to fishing technology field, specifically to a portable ejection fishing device, including the shell, the rear end of the shell is equipped with trigger assembly, the front end of the shell is equipped with launch assembly, the trigger assembly is connected with launch assembly through bearing;The front end of the shell is equipped with opening, the launch assembly is installed with fishing net, and the fishing net is ejected by the trigger assembly to push the launch assembly.The spring storage and the thread rotation combined launch mechanism of the present application make the fishing net produce rotating centrifugal force in the ejection process, so as to realize the automatic unfolding of the fishing net;At the same time, the opening and closing component composed of fan-shaped blades is arranged, which automatically clamps and fixes the net opening counterweight end of the fishing net in the storage stage, and automatically opens and releases when the inner cylinder advances, cooperates with the automatic take-up device and the recovery mechanism driven by the motor, realizes one-key recovery, solves the problems of large operation difficulty, high physical consumption, poor portability of the existing net fishing mode, low fishing efficiency and other problems.

Description

Technical Field

[0001] This invention relates to the field of fishing technology, and in particular to a portable catapult fishing device and its method of use. Background Technology

[0002] Fishing has long been a way for humans to both produce and relax. Net fishing, as a common form, is widely used due to its high catch efficiency. Traditional manual net casting requires a certain level of physical strength and skilled operation, has a high learning curve, and puts significant strain on the lower back, shoulders, and other joints with prolonged use, making it unsuitable for the elderly and those with weaker physical abilities. With the increasing popularity of recreational fishing, various auxiliary fishing devices have gradually appeared on the market. However, most products are large, complex in structure, and lack portability, failing to meet the demand for miniaturized and lightweight equipment in scenarios such as outdoor fishing and temporary catches.

[0003] Chinese utility model patent CN216874609U discloses a portable multi-functional fishing device. The device includes a rod, a reel holder, a launch handle, a harpoon, and a launch rope. The rod has a positioning groove for holding the harpoon, and the harpoon's tail engages with the launch handle. Both ends of the launch rope are fixed to the top of the rod. In use, pressing the handle separates the rod from the harpoon tail, and the launch rope resets, launching the harpoon towards the target. The device can also be used as a fishing rod. This patented fishing device has a relatively simple structure, is easy to operate, and is quite portable.

[0004] However, the device disclosed in the aforementioned utility model patent uses a catapult-launched harpoon as a fishing method, which relies on precise aiming at a single target fish. The catch per catch is limited. This device is not suitable for net fishing operations that require a large area of ​​water coverage, and there is still considerable room for improvement in fishing efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a portable catapult fishing device and its usage method. A launching mechanism combining spring charging and screw rotation generates centrifugal force during the launching process, thereby automatically deploying the fishing net. Simultaneously, an opening and closing component composed of fan-shaped blades automatically clamps and secures the net's opening counterweight during the charging phase, automatically opening and releasing as the inner cylinder advances during launch. Operation is simple and reliable. Combined with an automatic line reel and a motor-driven retrieval mechanism, the fishing net can be retrieved with a single click, solving the problems of high operational difficulty, high physical exertion, limited applicability, and low fishing efficiency associated with existing net-casting fishing methods.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A portable catapult fishing device includes a housing, a triggering component located at the rear end of the housing, and a launching component located at the front end of the housing. The triggering component and the launching component are connected by a bearing. An opening is provided at the front end of the housing, and a fishing net is installed inside the launching component. The fishing net is launched by the launching component through the triggering component. The triggering assembly includes a mounting post fixed to the inner wall of the rear end of the housing. A limit member is fixed to the front end of the mounting post. A thrust spring is sleeved on the mounting post. A sleeve is slidably installed inside the housing. One end of the sleeve is slidably sleeved on the mounting post and located between the thrust spring and the limit member. The other end of the sleeve is connected to the launching assembly. A reset plate is fixed to the upper end of the sleeve. A sliding groove is opened on the housing, and the reset plate extends out of the outer side of the housing through the sliding groove. A locking protrusion is fixed to the lower end of the sleeve. A mounting hole is opened at the bottom of the housing. A trigger is hinged in the mounting hole. The top of the trigger can contact the locking protrusion. A limit spring is also installed between the trigger and the housing.

[0007] Preferably, the trigger includes a contact end and a trigger end. The contact end is provided with a sleeve groove, which is slidably sleeved with the top of the trigger end. The sleeve groove is provided with a first limiting protrusion, and the trigger end is provided with a second limiting protrusion. The first limiting protrusion and the second limiting protrusion restrict the contact end from disengaging from the trigger end. The top of the trigger end is also provided with a mounting groove, and an elastic lifting member is provided in the mounting groove. One end of the elastic lifting member abuts against the bottom wall of the mounting groove, and the other end of the elastic lifting member abuts against the top wall of the sleeve groove. The trigger end is hinged in a mounting hole. One end of the limiting spring is fixedly connected to the trigger end, and the other end of the limiting spring is connected to the housing on the front side of the trigger end.

[0008] Preferably, the launching assembly includes an inner cylinder, one end of which is closed and the other end is open, and the inner cylinder is used to hold a fishing net; the outer wall of the inner cylinder is provided with a threaded groove, the front end of the shell is circular and the inner wall is provided with a threaded protrusion, and the inner cylinder and the inner wall of the shell are rotatably connected by the engagement of the threaded groove and the threaded protrusion; the closed end of the inner cylinder is provided with an annular mounting groove, the outer ring of the bearing is fixedly connected to the inner wall of the annular mounting groove, and the inner ring of the bearing is fixedly connected to a frustum provided on the sleeve; the open end of the inner cylinder is located on the front side of the shell.

[0009] Furthermore, the inner cylinder has an opening and closing component on its open side, which includes multiple fan-shaped blades. A hinge cylinder is provided on the outer side of each fan-shaped blade, and a hinge shaft is provided on the open side of the inner cylinder to cooperate with it. The fan-shaped blades and the inner cylinder are rotatably connected through the hinge cylinder and the hinge shaft. The multiple fan-shaped blades surround the open side of the inner cylinder to form an annular limiting ring. A tension spring is connected between the fan-shaped blades and the inner wall of the inner cylinder. One end of the tension spring is fixed to the fan-shaped blades, and the other end is fixed to the inner wall of the inner cylinder.

[0010] Furthermore, an extension rod is fixed on the hinged cylinder, and the extension rod is arranged in the opposite direction to the extension direction of the fan-shaped blade. The inner cylinder is provided with a square groove to accommodate the extension rod. A limiting ring is provided at the front end of the shell. The inner diameter of the limiting ring is smaller than the outer diameter of the inner cylinder. When the inner cylinder is pushed forward, the contact between the extension rod and the limiting ring causes the extension rod to rotate, so that the fan-shaped blade is in an open state.

[0011] Furthermore, the top of the housing is also equipped with an automatic line reel, which includes a fixed bracket. A connecting tube is rotatably connected between the two fixed brackets, and a coil is wound on the connecting tube. A motor is fixed to one side of the fixed bracket, and the output shaft of the motor is fixedly connected to the connecting tube. The housing has a hole, and the end of the sleeve connected to the inner cylinder has a through hole. One end of the coil passes through the hole and the through hole on the housing and is fixedly connected to the pull rope of the fishing net. The housing is equipped with a battery compartment, and a battery is installed in the battery compartment. The battery is electrically connected to the motor.

[0012] Preferably, a handheld end is provided at the front end of the bottom of the housing, and a handheld end is provided at the rear end of the bottom of the housing.

[0013] Preferably, the end of the sleeve that is sleeved with the mounting post has a circular hole, and the sleeve is slidably mounted on the mounting post through the circular hole.

[0014] Furthermore, when the multiple fan-shaped blades are in a closed state, they enclose a circular hole. The fishing net is provided with a counterweight end at the opening. When the counterweight end at the opening of the fishing net is closed, it forms an interference fit with the circular hole to prevent the fishing net from coming out of the inner cylinder before launch.

[0015] This invention also claims protection for a method of using a portable catapult fishing device, comprising the following steps: S1: Securely connect the fishing net's pull rope to the coil inside the inner cylinder, ensuring the motor is off and the coil is in a free-flowing state. Fold the fishing net and place it inside the inner cylinder of the launching assembly, with the net's opening counterweight end located on the front side of the inner cylinder. Hold the housing and push the reset plate backward, causing the sleeve to slide backward along the mounting post, compressing the thrust spring. Simultaneously, the inner cylinder rotates along the threaded groove towards the rear of the housing. At this time, under the tension of the tension spring, the extension rod of the fan-shaped blade disengages from the limiting ring. Under the tension of the tension spring, the extension rod and the fan-shaped blade rotate around the hinge axis simultaneously. All fan-shaped blades adhere to the front end of the inner cylinder, forming a closed state. The round hole formed in the middle clamps the net's opening counterweight end. As the reset plate continues to push backward until the locking protrusion at the lower end of the sleeve presses against the elastic lifting component, it passes over the top of the trigger component to form a lock, and the device remains in a charged state. S2: Hold handheld end one and handheld end two with both hands respectively, and aim the front of the shell at the target water area; S3: Press the trigger end of the trigger, the trigger rotates around the hinge point in the mounting hole, the top disengages from the locking protrusion, the thrust spring releases its elastic force to push the sleeve forward, causing the inner cylinder to rotate forward along the threaded protrusion. The counterweight end of the fishing net rotates and opens under the centrifugal force generated by the rotation, rotating towards the front end of the shell. When it reaches the front end of the shell, the extension rod abuts against the limit ring, causing the fan-shaped blades and the extension rod to rotate around the hinge axis. The fan-shaped blades are fully opened. At this time, the limit ring restricts the inner cylinder from continuing to move forward, forming a stop force. The fishing net is then shot out of the inner cylinder and unfolded into the water for fishing. S4: Start the motor, the motor drives the connecting drum to rotate, winding up the coil, and pulling the fishing net and catch back by the pull rope to clean the fishing net; S5: Repeat S1-S4 until the fishing operation is completed; S6: Disconnect the fishing net's pull rope from the coil, push the reset plate backward to reset the sleeve, and simultaneously screw the inner cylinder back into the housing. The device returns to its initial state and is ready for the next use.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention uses a launching method that combines a thrust spring with a screw rotation mechanism to make the inner cylinder rotate synchronously during the launching process. The counterweight end of the fishing net naturally unfolds with the help of the centrifugal force generated by the rotation. Compared with the traditional manual casting of nets, it reduces the dependence on the operator's physical strength and skills and expands the range of applicable people. The opening and closing part is composed of multiple fan-shaped blades. Utilizing the linkage relationship between the tension spring, the extension rod, and the limiting ring, it automatically closes and clamps the counterweight end of the fishing net during the power storage stage to prevent the fishing net from falling out of the inner cylinder before launching. During launching, it automatically opens and releases as the inner cylinder moves forward. No additional manual operation is required. The structure and action are smooth and continuous, ensuring that the fishing net unfolds and improving the success rate of catching.

[0017] (2) The trigger component of the present invention adopts a locking structure of locking protrusion and trigger to achieve power storage and locking. After the operator has stored the power, he can aim and fire at his own ease, which improves the controllability of the firing timing. The trigger is set with a two-section structure and is equipped with an elastic lifting component, so that the locking protrusion can smoothly pass over the top of the trigger during the power storage process to complete the locking, while ensuring reliable locking and sensitive release during triggering. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the fishing device of the present invention; Figure 2 This is a cross-sectional structural diagram of the fishing device of the present invention before launch; Figure 3 This is a schematic cross-sectional view of the fishing device of the present invention after launch; Figure 4 This is a schematic diagram of the internal three-dimensional structure of the fishing device of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the internal three-dimensional structure of the fishing device of the present invention. Figure 2 ; Figure 6 yes Figure 2 A partially enlarged structural diagram; Figure 7 yes Figure 3 A partially enlarged structural diagram; Figure 8 yes Figure 5 A partially enlarged structural diagram.

[0019] In the diagram: 100, housing; 110, slide groove; 120, mounting hole; 130, threaded protrusion; 140, limiting ring; 150, handheld end one; 160, handheld end two; 200, launching assembly; 210, inner cylinder; 211, threaded groove; 212, hinge shaft; 213, square groove; 220, opening and closing component; 221, fan-shaped blade; 222, hinge cylinder; 223, extension rod; 230, tension spring; 240, annular mounting groove; 250, round hole; 300, trigger assembly; 310, mounting post; 320. Thrust spring; 330, limiting component; 340, socket; 341, circular hole; 342, frustum; 350, reset plate; 360, locking protrusion; 370, trigger component; 371, contact end; 372, trigger end; 373, socket groove; 374, limiting protrusion one; 375, limiting protrusion two; 376, mounting groove; 377, elastic lifting component; 380, limiting spring; 400, bearing; 500, battery compartment; 600, automatic retractor; 610, fixed bracket; 620, terminal block; 630, coil. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. Furthermore, the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0021] Example 1 Reference Figure 1-8 A portable catapult fishing device includes a housing 100, a trigger assembly 300 located at the rear end of the housing 100, and a launching assembly 200 located at the front end of the housing 100. The trigger assembly 300 and the launching assembly 200 are connected by a bearing 400. The front end of the housing 100 has an opening, and a fishing net is installed inside the launching assembly 200. The fishing net is launched by the trigger assembly 300 pushing the launching assembly 200. The housing 100 is cylindrical in shape, with a circular opening at the front end to accommodate the rotational movement of the launching assembly 200; the rear end is closed, and the mounting post 310 is fixed to the center of the inner wall of the rear end.

[0022] The triggering assembly 300 includes a mounting post 310 fixed to the inner wall of the rear end of the housing 100. A limiting member 330 is fixed to the front end of the mounting post 310. A thrust spring 320 is sleeved on the mounting post 310. A sleeve 340 is slidably installed inside the housing 100. One end of the sleeve 340 is slidably sleeved on the mounting post 310 and located between the thrust spring 320 and the limiting member 330. The other end of the sleeve 340 is connected to the launching assembly 300. A reset plate 350 is fixed at one end. A sliding groove 110 is provided on the housing 100. The reset plate 350 extends out of the housing 100 through the sliding groove 110. A locking protrusion 360 is fixed at the lower end of the sleeve 340. A mounting hole 120 is provided at the bottom of the housing 100. A trigger 370 is hinged in the mounting hole 120. The top of the trigger 370 can contact the locking protrusion 360. A limit spring 380 is also installed between the trigger 370 and the housing 100.

[0023] The sleeve 340 is axially slidably installed within the housing 100. Its upper reset plate 350 protrudes through the groove 110 at the top of the housing 100, allowing the operator to manually push and store force. The lower locking protrusion 360 extends towards the mounting hole 120 at the bottom of the housing, engaging with the top of the trigger 370 hinged within the mounting hole 120. A thrust spring 320 is sleeved on the mounting post 310. When the sleeve 340 slides backward, it compresses the thrust spring 320. A limiting member 330 is fixed to the front end of the mounting post 310, restricting the sleeve 340's forward travel after the spring force is released, preventing the sleeve 340 from dislodging from the mounting post 310.

[0024] The trigger element 370 is hinged and installed in the mounting hole 120. A limiting spring 380 is connected between the trigger element 370 and its front housing 100, so that the trigger element 370 maintains the default posture of its top engaging with the locking protrusion 360 when no external force is applied. The bearing 400 connects the trigger assembly 300 and the launching assembly 200, allowing the inner cylinder 210 to rotate freely relative to the sleeve 340 and move axially synchronously with the sleeve 340.

[0025] In this embodiment, the trigger 370 includes a contact end 371 and a trigger end 372. The contact end 371 is provided with a sleeve groove 373, which is slidably sleeved with the top of the trigger end 372. The sleeve groove 373 is provided with a first limiting protrusion 374, and the trigger end 372 is provided with a second limiting protrusion 375. The first limiting protrusion 374 and the second limiting protrusion 375 restrict the contact end 371 from disengaging from the trigger end 372. The top of the trigger end 372 also has... An installation groove 376 is provided, and an elastic lifting member 377 is provided in the installation groove 376. One end of the elastic lifting member 377 abuts against the bottom wall of the installation groove 376, and the other end of the elastic lifting member 377 abuts against the top wall of the sleeve groove 373. The trigger end 372 is hinged in the installation hole 120. One end of the limiting spring 380 is fixedly connected to the trigger end 372, and the other end of the limiting spring 380 is connected to the housing 100 on the front side of the trigger end 372.

[0026] The trigger 370 adopts a two-section structure, which is intended to allow the locking protrusion 360 to smoothly pass over the top of the trigger 370 to complete the engagement during the charging process, without requiring the operator to manually remove the trigger.

[0027] Specifically, the contact end 371 is sleeved on the top of the trigger end 372, and the two are elastically abutted by the elastic lifting member 377. When the locking protrusion 360 slides backward and presses the contact end 371, the contact end 371 overcomes the elastic force of the elastic lifting member 377 and compresses downward, allowing the locking protrusion 360 to pass over the top of the contact end 371. After passing over, the elastic lifting member 377 pushes the contact end 371 back to its original position, and the locking protrusion 360 is limited by the top of the contact end 371, completing the locking. When triggered, the operator presses the trigger end 372, and the trigger member 370 rotates around the hinge point inside the mounting hole 120, with the top deflecting downward, disengaging the locking protrusion 360 and releasing the thrust spring 320. The cooperation of the first limiting protrusion 374 and the second limiting protrusion 375 prevents the contact end 371 from separating from the trigger end 372 during use.

[0028] The elastic lifting element 377 can be a small compression spring. The two-stage triggering structure of the trigger element 370 eliminates the need for an additional manual unlocking step during the charging operation, simplifying the operation process while ensuring the locking reliability in the charging state.

[0029] In this embodiment, the launching assembly 200 includes an inner cylinder 210, which is closed at one end and open at the other end. The inner cylinder 210 is used to hold a fishing net. The outer wall of the inner cylinder 210 is provided with a threaded groove 211. The front end of the housing 100 is circular and the inner wall is provided with a threaded protrusion 130. The inner cylinder 210 and the inner wall of the housing 100 are rotatably connected through the engagement of the threaded groove 211 and the threaded protrusion 130. The closed end of the inner cylinder 210 is provided with an annular mounting groove 240. The outer ring of the bearing 400 is fixedly connected to the inner wall of the annular mounting groove 240, and the inner ring of the bearing 400 is fixedly connected to a frustum 342 provided on the sleeve 340. The open end of the inner cylinder 210 is located on the front side of the housing 100.

[0030] The threaded groove 211 on the outer wall of the inner cylinder 210 engages with the threaded protrusion 130 on the inner wall of the front end of the housing 100, causing the inner cylinder 210 to rotate synchronously under axial force. Since the inner cylinder 210 is connected to the sleeve 340 via the bearing 400, and the sleeve 340 only performs axial linear motion without rotation, the bearing 400 decouples their movements, allowing the inner cylinder 210 to rotate forward along the threaded protrusion 130 under the thrust of the sleeve 340. An annular mounting groove 240 is located at the closed end of the inner cylinder 210, where the outer ring of the bearing 400 is embedded and fixed, while the inner ring is fixed to the frustum 342 at the front end of the sleeve 340. The open end of the inner cylinder 210 faces the front of the housing 100; after folding, the fishing net is inserted into the inner cylinder 210 from the open end.

[0031] In this embodiment, the inner cylinder 210 has an opening and closing component 220 on its open side. The opening and closing component 220 includes multiple fan-shaped blades 221. A hinge cylinder 222 is provided on the outer side of each fan-shaped blade 221. A hinge shaft 212 is provided on the open side of the inner cylinder 210 to cooperate with it. The fan-shaped blades 221 and the inner cylinder 210 are rotatably connected through the hinge cylinder 222 and the hinge shaft 212. The multiple fan-shaped blades 221 surround the open side of the inner cylinder 210 to form an annular limiting ring. A tension spring 230 is connected between the fan-shaped blades 221 and the inner wall of the inner cylinder 210. One end of the tension spring 230 is fixed on the fan-shaped blades 221, and the other end is fixed on the inner wall of the inner cylinder 210.

[0032] The number of fan-shaped blades 221 can be set to four or six according to actual needs. Multiple fan-shaped blades 221 are evenly distributed around the opening of the inner cylinder 210, and after closing, they are assembled into a complete closed end face, forming a circular hole 250 in the center. The hinge cylinder 222 on the outer side of each fan-shaped blade 221 is sleeved on the corresponding hinge shaft 212 on the opening side of the inner cylinder 210, and the opening and closing rotation of the blade is realized by using the hinge shaft 212 as the rotation axis. One end of the tension spring 230 is fixed to the inner side of the fan-shaped blade 221, and the other end is fixed to the inner wall of the inner cylinder 210, providing elastic force to keep the blade in a closed tendency. The opening and closing component design of the fan-shaped blades 221 constrains the counterweight end of the fishing net to the front end of the inner cylinder 210 before launch, preventing the fishing net from shifting during the period from power storage to launch. At the same time, during the launch rotation, the counterweight end can also be rotated to generate centrifugal force, ensuring the subsequent opening of the fishing net, effectively improving the stability and repeatability of the launch, and greatly improving the fishing effect.

[0033] It should be noted that both ends of the tension spring 230 are smooth hinged connections to prevent the fishing net from getting caught. The fishing net can be a spiral net commonly used in this field.

[0034] In this embodiment, an extension rod 223 is fixed on the hinged cylinder 222. The extension rod 223 is arranged in the opposite direction to the extension direction of the fan-shaped blade 221. The inner cylinder 210 is provided with a square groove 213 to accommodate the extension rod 223. The front end of the housing 100 is provided with a limiting ring 140. The inner diameter of the limiting ring 140 is smaller than the outer diameter of the inner cylinder 210. When the inner cylinder 210 is pushed forward, the contact between the extension rod 223 and the limiting ring 140 causes the extension rod 223 to rotate, so that the fan-shaped blade 221 is in an open state.

[0035] The extension rod 223 is fixed to the hinged cylinder 222, and its direction is opposite to the extension direction of the fan-shaped blade 221. That is, when the fan-shaped blade 221 is facing the center of the inner cylinder 210, the extension rod 223 extends radially outward of the inner cylinder 210 and is accommodated in the gap between the outer wall of the inner cylinder 210 and the inner wall of the shell 100. When the inner cylinder 210 is in the retracted state, the extension rod 223 is not in contact with the limiting ring 140, and the fan-shaped blade 221 remains closed under the action of the tension spring 230. When the sleeve 340 pushes the inner cylinder 210 forward to the front end of the shell 100, the end of the extension rod 223 abuts against the inner wall of the limiting ring 140. After being blocked, it rotates around the hinge shaft 212 with the hinge sleeve 222. The extension rod 223 rotates into the square groove 213 opened in the inner cylinder 210, and the fan-shaped blade 221 flips outward, releasing the counterweight end of the fishing net. At the same time, the inner cylinder 210 is blocked by the limiting ring 140, and the sleeve 340 is blocked by the limiting member 330, stopping forward and generating a cutting force. At this time, the fishing net is cast out. Under the centrifugal action of the counterweight end, the fishing net opens further and falls into the water.

[0036] The inner diameter of the limiting ring 140 is smaller than the outer diameter of the inner cylinder 210, preventing the inner cylinder 210 from passing through the limiting ring 140. At the same time, it forms a stop limit on the axial displacement of the inner cylinder 210. This stop force works together with the kinetic energy of the fishing net to make the fishing net detach from the inner cylinder 210 and be thrown forward. The linkage design between the extension rod 223 and the limiting ring 140 realizes the automatic synchronization of the opening and closing action of the fan-shaped blade 221 with the launching stroke, without the need for an additional control mechanism, which is ingenious.

[0037] In this embodiment, the top of the housing 100 is also provided with an automatic line reel 600. The automatic line reel includes a fixed bracket 610, and a connecting tube 620 is rotatably connected between the two fixed brackets 610. A coil 630 is wound on the connecting tube 620. A motor is fixed on one side of the fixed bracket 610, and the output shaft of the motor is fixedly connected to the connecting tube 620. The housing 100 has a hole, and the end of the sleeve 340 connected to the inner cylinder 210 has a through hole. One end of the coil 630 passes through the hole and the through hole on the housing 100 and is fixedly connected to the pull rope of the fishing net. The housing 100 is provided with a battery compartment 500, and a battery is installed in the battery compartment 500. The battery is electrically connected to the motor.

[0038] An automatic line reel 600 is mounted on the top of the housing 100. Fixed brackets 610 are symmetrically distributed on both sides of the line reel 620. A motor is fixed to the outside of one fixed bracket 610, and its output shaft is coaxially and fixedly connected to the line reel 620, driving the line reel 620 to rotate and reel in the line. A coil 630 is wound around the line reel 620, with one end passing through a hole in the side wall of the housing 100 and a through hole at the front end of the sleeve 340, and is fixedly connected to the fishing net's pull rope. This allows the fishing net to be pulled back after it is launched by the coil 630. A battery compartment 500 is located on the housing 100, housing a battery that is electrically connected to the motor to provide power. The battery compartment 500 should preferably have an openable and closable cover for easy battery replacement.

[0039] It should be noted that the motor is a reversible motor. When the motor is off, the wire drum 620 can rotate freely relative to the fixed bracket 610, and the coil 630 can be freely released as the fishing net is launched. After the motor is started, it drives the wire drum 620 to rotate in the opposite direction and rewind the coil 630.

[0040] In this embodiment, a handheld end 150 is provided at the front end of the bottom of the housing 100, and a handheld end 160 is provided at the rear end of the bottom of the housing 100.

[0041] Handheld end 150 and handheld end 2 160 are located at the front and rear ends of the bottom of the housing 100, respectively. The operator holds both ends with both hands, which helps to keep the housing 100 stable during launch and reduce deflection caused by ejection reaction force.

[0042] In this embodiment, a circular hole 341 is provided at one end of the sleeve 340 that is sleeved with the mounting post 310, and the sleeve 340 is slidably mounted on the mounting post 310 through the circular hole 341.

[0043] The sleeve 340 has a circular hole 341 at one end near the mounting post 310. The diameter of the circular hole 341 is adapted to the outer diameter of the mounting post 310. The sleeve 340 is fitted into the mounting post 310 through the circular hole 341 and can slide along its axial direction. At the same time, the sleeve 340 slides in contact with the inner wall of the housing 100, and the inner wall of the housing 100 also has a guiding function.

[0044] In this embodiment, when the multiple fan-shaped blades 221 are in a closed state, they surround and form a circular hole 250. The fishing net is provided with a net opening counterweight end. After the net opening counterweight end of the fishing net is closed, it forms an interference clamp fit with the circular hole 250 to prevent the fishing net from coming out of the inner cylinder 210 before launch.

[0045] The inner diameter of the circular hole 250 formed by the closed fan-shaped blades 221 is slightly smaller than the outer diameter of the counterweight end of the fishing net when closed. The two form an interference fit, which allows the fishing net to be reliably held at the front end of the inner cylinder 210 after charging, and it will not fall out due to gravity or vibration during the movement and aiming of the device. Due to the limited interference, the fishing net can be smoothly released outward by the combined action of the ejection force and centrifugal force during launch, without affecting normal launch. This allows the device to solve the pre-positioning problem of the fishing net without adding an additional fixing mechanism, ensuring the accuracy of the fishing net's release time.

[0046] Example 2 A method of using the portable catapult fishing device described in Embodiment 1 includes the following steps: S1: Securely connect the fishing net's pull rope to the coil inside the inner cylinder 210, ensuring the motor is off and the coil 630 is in a free-flowing state; fold the fishing net and place it inside the inner cylinder 210 of the launching assembly 200, with the net's counterweight end positioned on the front outer side of the inner cylinder 210; hold the housing 100 and push the reset plate 350 backward, causing the sleeve 340 to slide backward along the mounting post 310, compressing the thrust spring 320, and simultaneously causing the inner cylinder 210 to rotate along the threaded groove 211 towards the rear of the housing 100. At this time, the tension of the tension spring 230... When the extension rod 223 of the fan-shaped blade 221 disengages from the limiting ring 140, the extension rod 223 rotates around the hinge shaft 212 simultaneously with the fan-shaped blade 221 under the tension of the tension spring 230. All the fan-shaped blades 221 are in contact with the front end of the inner cylinder 210, forming a closed state. The round hole formed in the middle clamps the counterweight end of the fishing net. As the reset plate 350 continues to push backward, until the locking protrusion 360 at the lower end of the sleeve cylinder 340 presses the elastic lifting member 377, it passes over the top of the trigger member 370 to form a lock, and the device remains in the stored state. S2: Hold the first handpiece 150 and the second handpiece 160 with both hands respectively, and aim the front end of the shell 100 at the target water area; S3: Press the trigger end 372 of the trigger 370. The trigger 370 rotates around the hinge point in the mounting hole 120. The top disengages from the locking protrusion 360. The thrust spring 320 releases its elastic force to push the sleeve 340 forward, causing the inner cylinder 210 to rotate forward along the threaded protrusion 130. The counterweight end of the fishing net rotates and opens under the centrifugal force generated by the rotation, rotating towards the front end of the shell 100. When it reaches the front end of the shell 100, the extension rod 223 abuts against the limiting ring 140, causing the fan-shaped blade 221 and the extension rod 223 to rotate around the hinge axis 212. The fan-shaped blade 221 is fully opened. At this time, the limiting ring 140 restricts the inner cylinder 210 from continuing to move forward, forming a stop force. The fishing net is shot out of the inner cylinder 210 and then spreads into the water for fishing. S4: Start the motor, the motor drives the junction drum 620 to rotate, and the coil 630 is wound up. The fishing net and catch are pulled back by the pull rope to clean the fishing net. Sufficient slack should be reserved in the connection length between coil 630 and fishing net rope to match the actual fishing distance; the motor starting method can be controlled by the button set on the housing 100; S5: Repeat S1-S4 until the fishing operation is completed; S6: Disconnect the fishing net's pull rope from the coil, push the reset plate 350 backward to reset the sleeve 340, and simultaneously screw the inner cylinder 210 back into the housing 100. The device returns to its initial state and is ready for the next use.

[0047] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A portable catapult fishing device, characterized in that: The device includes a housing (100), a trigger assembly (300) located at the rear end of the housing (100), and a launching assembly (200) located at the front end of the housing (100). The trigger assembly (300) and the launching assembly (200) are connected by a bearing (400). The front end of the housing (100) has an opening, and a fishing net is installed inside the launching assembly (200). The fishing net is launched by the launching assembly (200) through the trigger assembly (300). The triggering assembly (300) includes a mounting post (310) fixed to the inner wall of the rear end of the housing (100). A limiting member (330) is fixed to the front end of the mounting post (310). A thrust spring (320) is sleeved on the mounting post (310). A sleeve (340) is slidably installed inside the housing (100). One end of the sleeve (340) is slidably sleeved on the mounting post (310) and located between the thrust spring (320) and the limiting member (330). The other end of the sleeve (340) is connected to the launching assembly (300). The upper end of the sleeve (340) A reset plate (350) is fixed thereon. A sliding groove (110) is provided on the housing (100). The reset plate (350) extends out of the outer side of the housing (100) through the sliding groove (110). A locking protrusion (360) is fixed at the lower end of the sleeve (340). An installation hole (120) is provided at the bottom of the housing (100). A trigger (370) is hinged in the installation hole (120). The top of the trigger (370) can be contacted with the locking protrusion (360). A limit spring (380) is also installed between the trigger (370) and the housing (100).

2. The portable catapult fishing device according to claim 1, characterized in that: The trigger (370) includes a contact end (371) and a trigger end (372). The contact end (371) is provided with a socket groove (373), which is slidably sleeved with the top of the trigger end (372). The socket groove (373) is provided with a first limiting protrusion (374), and the trigger end (372) is provided with a second limiting protrusion (375). The first limiting protrusion (374) and the second limiting protrusion (375) restrict the contact end (371) from disengaging from the trigger end (372). The top of the trigger end (372) is also provided with... There is a mounting groove (376), and an elastic lifting member (377) is provided in the mounting groove (376). One end of the elastic lifting member (377) abuts against the bottom wall of the mounting groove (376), and the other end of the elastic lifting member (377) abuts against the top wall of the sleeve groove (373). The trigger end (372) is hinged in the mounting hole (120). One end of the limiting spring (380) is fixedly connected to the trigger end (372), and the other end of the limiting spring (380) is connected to the housing (100) on the front side of the trigger end (372).

3. The portable catapult fishing device according to claim 1, characterized in that: The launching assembly (200) includes an inner cylinder (210), which is closed at one end and open at the other end. The inner cylinder (210) is used to hold a fishing net. The outer wall of the inner cylinder (210) is provided with a threaded groove (211). The front end of the housing (100) is circular and the inner wall is provided with a threaded protrusion (130). The inner cylinder (210) and the inner wall of the housing (100) are rotatably connected by the engagement of the threaded groove (211) and the threaded protrusion (130). The closed end of the inner cylinder (210) is provided with an annular mounting groove (240). The outer ring of the bearing (400) is fixedly connected to the inner wall of the annular mounting groove (240). The inner ring of the bearing (400) is fixedly connected to the frustum (342) provided on the sleeve (340). The open end of the inner cylinder (210) is located on the front side of the housing (100).

4. A portable catapult fishing device according to claim 3, characterized in that: The inner cylinder (210) has an opening and closing component (220) on its open side. The opening and closing component (220) includes multiple fan-shaped blades (221). A hinge cylinder (222) is provided on the outer side of the fan-shaped blades (221). A hinge shaft (212) is provided on the open side of the inner cylinder (210) to cooperate with it. The fan-shaped blades (221) and the inner cylinder (210) are rotatably connected through the hinge cylinder (222) and the hinge shaft (212). The multiple fan-shaped blades (221) surround the open side of the inner cylinder (210) to form an annular limiting ring. A tension spring (230) is connected between the fan-shaped blades (221) and the inner wall of the inner cylinder (210). One end of the tension spring (230) is fixed on the fan-shaped blades (221), and the other end is fixed on the inner wall of the inner cylinder (210).

5. A portable catapult fishing device according to claim 4, characterized in that: An extension rod (223) is fixed on the hinged cylinder (222). The extension rod (223) is arranged in the opposite direction to the extension direction of the fan-shaped blade (221). The inner cylinder (210) is provided with a square groove (213) to accommodate the extension rod (223). The front end of the housing (100) is provided with a limiting ring (140). The inner diameter of the limiting ring (140) is smaller than the outer diameter of the inner cylinder (210). When the inner cylinder (210) is pushed forward, the contact between the extension rod (223) and the limiting ring (140) causes the extension rod (223) to rotate, so that the fan-shaped blade (221) is in an open state.

6. A portable catapult fishing device according to claim 3, characterized in that: The top of the housing (100) is also provided with an automatic reel (600). The automatic reel includes a fixed bracket (610). A wire tube (620) is rotatably connected between the two fixed brackets (610). A coil (630) is wound on the wire tube (620). A motor is fixed on one side of the fixed bracket (610). The output shaft of the motor is fixedly connected to the wire tube (620). The housing (100) has a hole. One end of the sleeve (340) connected to the inner cylinder (210) has a through hole. One end of the coil (630) passes through the hole and the through hole on the housing (100) and is fixedly connected to the pull rope of the fishing net. The housing (100) is provided with a battery compartment (500). A battery is installed in the battery compartment (500). The battery is electrically connected to the motor.

7. A portable catapult fishing device according to claim 1, characterized in that: The bottom front end of the housing (100) is provided with a handheld end one (150), and the bottom rear end of the housing (100) is provided with a handheld end two (160).

8. A portable catapult fishing device according to claim 1, characterized in that: The sleeve (340) is fitted with a circular hole (341) at one end of the mounting post (310), and the sleeve (340) is slidably mounted on the mounting post (310) through the circular hole (341).

9. A portable catapult fishing device according to claim 4, characterized in that: When the multiple fan-shaped blades (221) are in a closed state, they surround and form a circular hole (250). The fishing net is provided with a net mouth counterweight end. After the net mouth counterweight end of the fishing net is closed, it forms an interference clamp fit with the circular hole (250) to restrict the fishing net from coming out of the inner cylinder (210) before launching.

10. A method of using the portable catapult fishing device as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: Securely connect the fishing net's pull rope to the coil inside the inner cylinder (210), confirm that the motor is off and the coil (630) is in a free-flowing state; fold the fishing net and place it inside the inner cylinder (210) of the launching assembly (200), with the net's counterweight end located on the front side of the inner cylinder (210). Hold the housing (100) and push the reset plate (350) backward, causing the sleeve (340) to slide backward along the mounting post (310), compressing the thrust spring (320), and simultaneously causing the inner cylinder (210) to rotate along the threaded groove (211) towards the rear side of the housing (100). At this time, under the tension of the tension spring (230)... When the extension rod (223) of the fan-shaped blade (221) disengages from the limiting ring (140), the extension rod (223) rotates around the hinge axis (212) simultaneously with the fan-shaped blade (221) under the tension of the tension spring (230). All the fan-shaped blades (221) are attached to the front end of the inner cylinder (210) to form a closed state. The round hole formed in the middle clamps the counterweight end of the fishing net. As the reset plate (350) continues to push backward, until the locking protrusion (360) at the lower end of the sleeve cylinder (340) presses the elastic lifting member (377), it passes over the top of the trigger member (370) to form a lock, and the device remains in the stored state. S2: Hold the first handpiece (150) and the second handpiece (160) with both hands respectively, and align the front end of the shell (100) with the target water area; S3: Press the trigger end (372) of the trigger (370), the trigger (370) rotates around the hinge point in the mounting hole (120), the top disengages from the locking protrusion (360), the thrust spring (320) releases its elastic force to push the sleeve (340) forward, and drives the inner cylinder (210) to rotate forward along the threaded protrusion (130). The net opening counterweight end of the fishing net rotates and opens under the centrifugal force generated by the rotation, and rotates towards the front end of the shell (100). When it reaches the front end of the shell (100), the extension rod (223) abuts against the limiting ring (140), and drives the fan-shaped blade (221) and the extension rod (223) to rotate around the hinge axis (212). The fan-shaped blade (221) is fully opened. At this time, the limiting ring (140) restricts the inner cylinder (210) from continuing to move forward, forming a stop force. The fishing net is shot out to the outside of the inner cylinder (210) and then unfolds and is scattered into the water for fishing. S4: Start the motor, the motor drives the junction box (620) to rotate, and wind up the coil (630). Pull the fishing net and catch back by pulling the rope and clean the fishing net; S5: Repeat S1-S4 until the fishing operation is completed; S6: Disconnect the fishing net's pull rope from the coil, push the reset plate (350) backward to reset the sleeve (340), and at the same time screw the inner cylinder (210) back into the housing (100). The device returns to its initial state and is ready for the next use.

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