A magnetic braking structure and fishing reel

Abstract

This invention provides a magnetic braking structure. By arranging a first and second magnetic ring within the side cover, and installing a magnetic induction wheel that moves with the turbine blades in the middle, combined with the linkage between the upper limit pin and the cam groove on the rotating shaft and the self-resetting function of the return spring, automatic adjustment and rapid response of the braking force are achieved. During casting, the upper limit pin disengages from the cam groove, causing the turbine blades to shift and rotate towards the side cover, pushing the magnetic induction wheel into the gap between the magnetic rings, quickly generating a stable and powerful magnetic damping force, effectively suppressing excessive spool speed. After the spool decelerates, the thrust weakens, and the return spring causes the magnetic induction wheel to quickly retract, thus weakening the braking force. This ensures that the braking force automatically adjusts according to the speed of the spool during casting, maintaining a balance between the line release speed and the lure speed. This application also provides a fishing reel that can quickly build up braking force to prevent line breakage during high-speed casting and quickly release resistance to ensure smooth line reeling during low-speed casting.

Description

Technical Field

[0001] This utility model relates to the field of fishing reel technology, specifically to a magnetic braking structure and a fishing reel. Background Technology

[0002] As a crucial component of modern fishing equipment, the performance of fishing reels directly impacts key user experiences such as casting distance and handling. To effectively control the spool's rotation speed during casting and prevent issues like line tangling and tangling, most mid-to-high-end fishing reels are equipped with braking systems. Magnetic brakes, due to their advantages of being contactless, having a fast response, and experiencing minimal wear, are widely used among various brake types, especially suitable for high-precision lure casting scenarios.

[0003] Existing magnetic braking structures mostly employ fixed magnetic rings or simple adjustable structures, with the magnet mounted on the side cover of the fishing reel. The braking force is adjusted by changing the distance between the magnet and the spool. However, these structures suffer from delayed braking response, especially during the initial high-speed rotation of the spool during casting. Traditional magnetic braking systems struggle to respond promptly, resulting in insufficient braking force and the possibility of line breakage. Furthermore, the braking adjustment lacks precise control; magnet position adjustment typically relies on a mechanical knob with a short travel and limited adjustment range, making it difficult to meet the dynamic braking needs of different fishing environments.

[0004] In light of this, some improved designs have attempted to incorporate components such as floating magnets and magnetic induction wheels to achieve dynamic control, but these still suffer from issues such as structural complexity, slow response, or poor stability. Particularly during high-speed casting, the speed and stability of the magnetic braking response remain key bottlenecks limiting the performance improvement of the braking system. Therefore, it is necessary to provide a magnetic braking device that offers rapid response, adjustable braking force, and stable and reliable structure to improve the control performance and user experience of fishing reels in practical use. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a magnetic braking structure and fishing reel, which effectively improves some of the problems of slow braking response in traditional magnetic braking structures.

[0006] A magnetic braking structure is disclosed for controlling the braking force of a fishing reel. The fishing reel includes a spool, a swivel, and a side cover. The magnetic braking structure comprises a magnetic ring assembly, a magnetic induction wheel, and a turbine blade. The magnetic ring assembly includes a first magnetic ring and a second magnetic ring disposed within the side cover, with a gap between the first and second magnetic rings and the second magnetic ring located on the inner side. The magnetic induction wheel is connected to the turbine blade on the side near the side cover and is located between the first and second magnetic rings. The turbine blade includes a bushing and a ring-shaped arrangement of... The bushing has multiple blades on its side. The bushing is fitted onto the top of the rotating shaft. A cam groove is recessed on the side of the bushing away from the side cover and towards the side cover. An upper limit pin is provided on the rotating shaft to fit the cam groove. The upper limit pin cooperates with the cam groove to make the turbine blades travel and rotate along the axis of the rotating shaft, thereby changing the distance between the magnetic induction wheel and the first magnetic ring and the second magnetic ring. A stop is provided on the side of the rotating shaft near the side cover. A return spring is fitted on the outside of the rotating shaft between the stop and the turbine blades.

[0007] Preferably, the cam groove includes a bottom surface, an arcuate surface connected to a first side of the bottom surface and parallel to the outer surface of the bushing, a stop surface connected to a second side of the bottom surface and perpendicular to the bottom surface, and a sliding surface connected to a third side of the bottom surface and set at an acute angle to the bottom surface. The stop surface, the arcuate surface, and the sliding surface are connected end to end. The stop surface and the sliding surface are arranged opposite to each other. The sliding surface is used for the upper limit pin to slide along it, thereby driving the turbine blade to rotate and causing the turbine blade to move upward toward the side cover.

[0008] Furthermore, two cam grooves are provided, and the two cam groove shafts are arranged symmetrically with respect to the central axis of the bushing.

[0009] Preferably, an annular ring is connected to the outer periphery of the plurality of blades, and the annular ring and the magnetic induction wheel are provided with matching connection holes and connection posts.

[0010] Preferably, the first magnetic ring component includes a plurality of floating magnet mounting seats arranged in a ring on the inner side of the side cover. The floating magnet mounting seats have mounting grooves on the side facing the second magnetic ring component, and arc-shaped magnets are disposed in the mounting grooves. Guide strips are provided on both sides of the floating magnet mounting seats, and the guide strips are connected to the side cover by an elastic element so that the floating magnet mounting seats are floatingly mounted inside the side cover.

[0011] Furthermore, the elastic element is a torsion spring.

[0012] Furthermore, an annular bracket is provided on the inner side of the side cover. The annular bracket has multiple arc-shaped mounting positions for mounting the floating magnet mounting base. Each side of the arc-shaped mounting position of the annular bracket has a mounting hole. The torsion spring is installed in the mounting hole, and one end of the torsion spring is sleeved on the guide strip.

[0013] A fishing reel includes a reel body, a spool for reeling in and out fishing line and capable of rotating relative to the reel body, a shaft for driving the spool to rotate, a side cover, and a magnetic brake structure.

[0014] Preferably, a mounting hole is provided at the end of the rotating shaft away from the side cover, a limiting pin is inserted into the mounting hole, a cam limiting component is provided on the main body of the fishing reel, the cam limiting component is provided with multiple cam limiting grooves, and the cam limiting component is connected to a mechanical brake adjustment knob provided at the end of the main body of the fishing reel.

[0015] Preferably, a bearing is provided in the middle of the rotating shaft.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides a magnetic brake structure. By arranging a first magnetic ring and a second magnetic ring in the side cover and installing a magnetic induction wheel that can move with the turbine blades in between, combined with the linkage between the upper limit pin and the cam groove on the rotating shaft and the self-resetting function of the return spring, the automatic adjustment and rapid response of the braking force are realized. During casting, the upper limit pin disengages from the cam groove, causing the turbine blades to shift towards the side cover. Simultaneously, the turbine blades are rotated by the shaft. The centrifugal force of the rotating turbine blades provides a thrust towards the side cover, rapidly propelling the magnetic induction wheel into the gap between the inner and outer magnetic rings. The magnetic induction wheel cuts the magnetic field between the inner and outer magnetic rings, quickly generating a stable and powerful magnetic damping force to effectively suppress excessive spool speed. As the spool decelerates, the centrifugal force of the rotating turbine blades decreases, and the thrust on the magnetic induction wheel weakens accordingly. The return spring releases energy (when the thrust is less than the spring force), causing the magnetic induction wheel to retract at a faster speed (i.e., the magnetic induction wheel slowly exits the gap between the first and second magnetic rings), thus reducing the braking force. This ensures that the braking force automatically adjusts with the speed of the spool during casting, maintaining a balance between the spool's line exit speed and the lure's speed, ensuring smooth and stable casting. This structure achieves dynamic matching of braking force without the need for external adjustment mechanisms, and boasts advantages such as fast response speed and high adjustment precision, thereby significantly improving the handling performance and safety of the fishing reel in different fishing methods and environments. This application also provides a fishing reel that can quickly establish and stably maintain sufficient braking force during high-speed casting, preventing line breakage or tangling caused by excessive spool speed, thus ensuring its handling performance and reliability in various fishing environments. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the fishing reel described in this utility model; Figure 2 This is a cross-sectional schematic diagram of the magnetic braking structure described in this utility model; Figure 3 This is a three-dimensional cross-sectional schematic diagram of the magnetic braking structure described in this utility model; Figure 4 This is a three-dimensional structural diagram of the spool described in this utility model; Figure 5 This is a partial cross-sectional schematic diagram of the magnetic braking structure at the spool of the present invention; Figure 6 This is a partial three-dimensional cross-sectional schematic diagram of the magnetic braking structure at the spool of the present invention; Figure 7 This is a three-dimensional structural diagram of the turbine blade of the present invention in one direction; Figure 8 This is a three-dimensional structural diagram of the turbine blade of this utility model from another direction; Figure 9 This is a schematic diagram of the side cover structure of the present invention; Figure 10 This is a partial structural diagram of the side cover of the present invention; Figure 11 This is a schematic diagram of the structure of the side cover after removing the floating magnet mounting base as described in this utility model.

[0018] in: 10-Side cover, 20-Spool, 30-Fishing reel body, 40-Shaft, 21-Magnetic induction wheel, 22-Turbine fan blade, 23-First magnetic ring, 24-Second magnetic ring, 221-Busset, 222-Blade, 223-Annular ring, 224-Cam groove, 225-Bottom surface, 226-Arc-shaped surface, 227-Stop surface, 228-Sliding surface, 41-Upper limit pin, 42-E-shaped buckle, 43-Washer, 44-Bearing, 45-Lower limit pin, 50-Reset spring, 11-Floating magnet mounting base, 12-Mounting groove, 13-Arc-shaped magnet, 14-Guide strip, 15-Torsion spring, 16-Annular bracket, 17-Arc-shaped mounting position, 18-Mounting hole, 19-Limiting post, 110-Arc-shaped cover plate. Detailed Implementation

[0019] The embodiments described below are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] See Figures 2-8 This embodiment provides a magnetic braking structure for controlling the braking force of a fishing reel. The fishing reel is provided with a spool 20, a shaft 40, and a side cover 10. The magnetic braking structure includes a magnetic ring assembly, a magnetic induction wheel 21, and a turbine blade 22.

[0021] See Figure 2 , Figure 3 Specifically, the magnetic ring assembly includes a first magnetic ring 23 and a second magnetic ring 24 disposed within the side cover 10, with a gap between the first magnetic ring 23 and the second magnetic ring 24 and the second magnetic ring 24 located on the inner side. See Figure 2 , Figure 5 as well as Figure 6 The magnetic induction wheel 21 is connected to the turbine blade 22, and the magnetic induction wheel 21 is located between the first magnetic ring 23 and the second magnetic ring 24. When the turbine blade 22 moves axially toward the side cover 10 on the rotating shaft 40, the magnetic induction wheel 21 is inserted into the gap area between the first magnetic ring 23 and the second magnetic ring 24, thereby generating magnetic damping force for braking.

[0022] See Figure 2 , Figure 3 , Figure 5 as well as Figure 6 The turbine blade 22 includes a bushing 221 and a plurality of blades 222 arranged annularly on the side of the bushing 221. The bushing 221 is fitted onto the top of the rotating shaft 40, and a cam groove 224 is recessed from the side of the bushing 221 away from the side cover 10 toward the side cover 10. An upper limit pin 41 is provided on the rotating shaft 40 to fit with the cam groove 224. The upper limit pin 41 cooperates with the cam groove 224 to make the turbine blade 22... The magnetic induction wheel 21 travels along the axis of the rotating shaft 40, thereby changing the distance between the first magnetic ring 23 and the second magnetic ring 24. At the same time, the turbine blade 22 will rotate with the rotating shaft 40, thereby driving the magnetic induction wheel 21 to cut the magnetic field between the first magnetic ring 23 and the second magnetic ring 24. A stop is provided on the side of the rotating shaft 40 near the side cover 10, and a return spring 50 is sleeved on the outside of the rotating shaft 40 between the stop and the turbine blade 22.

[0023] It should be noted that the blades 222 described in this application are all inclined along the rotation direction of the bushing 221, and are used to generate thrust along the axis of the shaft 40 when the turbine blades 22 rotate at high speed with the shaft 40. Specifically, the inclination direction of the blades 222 and the rotation direction work together to form a centrifugal thrust pointing towards the side cover 10, which pushes the turbine blades 22 towards the side cover 10. During normal operation, as the rotation speed of the shaft 40 increases, the axial thrust generated by the blades 222 gradually increases, thereby overcoming the elastic force of the return spring 50, so that the magnetic induction wheel 21 is located in the gap between the first magnetic ring 23 and the second magnetic ring 24, thereby enhancing the magnetic induction coupling strength and achieving a stronger electromagnetic braking effect; when the rotation speed decreases and the magnetic induction wheel 21 needs to exit the gap between the first magnetic ring 23 and the second magnetic ring 24, the axial thrust generated by the blades 222 will cause the magnetic induction wheel 21 to slowly exit, avoiding the rapid disappearance of braking force and achieving a slow decrease in braking force. Preferably, the tilt angle of the blade 222 is at an angle of 30° to 60° with the axis of the bushing 221. More preferably, the tilt angle of the blade 222 is at an angle of 45° with the axis of the bushing 221. This ensures the axial thrust output efficiency while balancing airflow resistance and structural strength, which is beneficial for achieving sufficient axial displacement under small speed changes.

[0024] See Figure 7 , Figure 8 Preferably, the cam groove 224 includes a bottom surface 225, an arc-shaped surface 226 connected to a first side of the bottom surface 225 and parallel to the outer surface of the bushing 221, a stop surface 227 connected to a second side of the bottom surface 225 and perpendicular to the bottom surface 225, and a sliding surface 228 connected to a third side of the bottom surface 225 and set at an acute angle to the bottom surface 225. The stop surface 227, the arc-shaped surface 226, and the sliding surface 228 are connected end to end. The stop surface 227 and the sliding surface 228 are arranged opposite to each other. The sliding surface 228 is used for the upper limit pin 41 to slide along it, thereby driving the turbine fan blade 22 to rotate and causing the turbine fan blade 22 to move upward toward the side cover 10.

[0025] When the shaft 40 rotates, the upper limit pin 41 rotates synchronously with the shaft 40. Guided by the cam groove 224, the upper limit pin 41 rotates from the bottom surface 225 to the sliding surface 228. Because the sliding surface 228 and the bottom surface 225 are arranged at an acute angle, and the sliding surface 228 is inclined downward along the axial direction away from the side cover 10, the upper limit pin 41 can push the turbine blade 22 to move towards the side cover 10. Since the upper limit pin 41 is fixed to the shaft 40 and has a tight fit with the cam groove 224, a torque is applied to the bushing 221 of the turbine blade 22 while the sliding surface 228 slides, thereby driving the turbine blade 22 to rotate synchronously around the axis of the shaft 40.

[0026] See Figure 7 , Figure 8 Furthermore, two cam grooves 224 are provided, and the two cam grooves 224 are arranged axially symmetrically with respect to the central axis of the bushing 221. This structure allows the upper limit pin 41 to slide simultaneously along the sliding surfaces 228 of the corresponding two cam grooves 224 during rotation, forming a symmetrical linkage thrust. This not only improves the stability of the turbine blade 22 during axial movement but also ensures the balanced force during its rotation around the axis, further enhancing the overall response accuracy and reliability of the system.

[0027] Preferably, an annular ring 223 is connected to the outer periphery of the plurality of blades 222. The annular ring 223 not only enhances the overall structural strength and stability of the blades 222, but also effectively ensures that the blades 222 maintain a consistent stress state during high-speed rotation, preventing deformation or displacement of the blades 222. The annular ring 223 is provided with multiple connecting holes or connecting posts, which cooperate with the corresponding connecting posts or connecting holes on the magnetic induction wheel 21, allowing the annular ring 223 to be firmly installed on the outer periphery of the magnetic induction wheel 21, achieving reliable fixation between the two. By connecting the turbine blades 22 and the magnetic induction wheel 21, the turbine blades 22 and the magnetic induction wheel 21 form an integral rotating unit, working collaboratively to more efficiently achieve axial adjustment of the magnetic induction wheel 21 between the first magnetic ring 23 and the second magnetic ring 24, and dynamic control of the electromagnetic braking intensity.

[0028] Preferably, the stop is an E-shaped buckle 42, and a washer 43 is provided at the bottom of the E-shaped buckle 42.

[0029] See Figure 9 , Figure 10 as well as Figure 11Preferably, the first magnetic ring component 23 includes a plurality of floating magnet mounting seats 11 arranged in a ring on the inner side of the side cover 10. Each floating magnet mounting seat 11 has a mounting groove 12 on the side facing the second magnetic ring component 24, and an arc-shaped magnet 13 is disposed within the mounting groove 12. Guide strips 14 are provided on both sides of the floating magnet mounting seat 11, and the guide strips 14 are connected to the side cover 10 via an elastic element to allow the floating magnet mounting seat 11 to float within the side cover 10. In this application, the elastic element is a torsion spring 15. During operation, the faster the rotation speed of the magnetic induction wheel 21, the more continuously the magnetic induction wheel 21 on the spool 20 cuts the static magnetic field of the arc-shaped magnet 13 on the floating magnet mounting seat 11, resulting in a significant increase in the rate of change of magnetic flux passing through the magnetic induction wheel 21. According to Faraday's law of electromagnetic induction, this change induces strong eddy currents within the toroidal conductor. The induced magnetic field generated by these eddy currents is opposite in direction to the magnetic field polarity of the arc-shaped magnet 13, thus pushing the floating magnet mounting base 11 to overcome the resistance of the elastic element and move towards the magnetic induction wheel 21. Consequently, the distance between the arc-shaped magnet 13 and the magnetic induction wheel 21 decreases. Since the strength of the magnetic field is inversely proportional to the square of the distance, the braking force of the arc-shaped magnet 13 on the spool 20 increases, and the elastic element is stretched and stores elastic potential energy during this process. When the rotational speed of the spool 20 decreases, the rate of change of magnetic flux through the magnetic induction wheel 21 decreases, resulting in a weakening of the induced eddy current intensity. The elastic potential energy of the elastic element is released, pulling the floating magnet mounting base 11 back to its original position. The distance between the arc-shaped magnet 13 and the magnetic induction wheel 21 increases, and the braking force decreases simultaneously. Therefore, the first magnetic ring 23 can automatically and sensitively adjust the braking force according to the change in the rotation speed of the shaft 40, adjust the balance between the line release speed of the spool and the movement speed of the bait, and prevent the fishing line from piling up on the spool, causing the spool to become "stirred rice powder".

[0030] It should be noted that in this application, the second magnetic ring 24 is a multi-level magnet arranged in a ring. Of course, the first magnetic ring 23 can also be a multi-level magnet arranged in a ring, and the magnetic poles of the second magnetic ring 24 and the first magnetic ring 23 are opposite.

[0031] See Figure 9 , Figure 10 as well as Figure 11Furthermore, an annular retaining seat 16 is provided on the inner side of the side cover 10. The annular retaining seat 16 has multiple arc-shaped mounting positions 17 for mounting the floating magnet mounting base 11. Each arc-shaped mounting position 17 of the annular retaining seat 16 has a mounting hole 18 on both sides. The mounting hole 18 has a B-shaped cross-section. The opening of the B-shaped mounting hole 18 is used to accommodate the torsion spring 15 body coil and allow it to stably store energy under tension. The waist of the B-shaped mounting hole 18 is used to accommodate one end of the torsion spring 15. The other end of the torsion spring 15 is sleeved on the guide strip 14. In this application, the annular retaining seat 16 achieves a limiting connection through multiple limiting posts 19 provided on the side cover 10. Furthermore, this application also includes an arc-shaped cover plate 110, which is screwed into the mounting hole 18 of the annular retainer 16. It should be noted that the arc-shaped cover plate 110 is also screwed into the threaded hole on the limiting post 19. The arc-shaped cover plate 110 serves to limit the annular retainer 16 and prevents the torsion spring 15 from dislodging. The screw connection between the arc-shaped cover plate 110 and the limiting post 19 facilitates quick disassembly and assembly during later maintenance. Only the screws on the arc-shaped cover plate 110 need to be removed to remove the torsion spring 15 or replace the arc-shaped magnet 13, greatly improving the convenience and reliability of assembly and maintenance.

[0032] Preferably, two floating magnet mounting bases 11 are provided, symmetrically arranged within the side cover 10. This ensures the balance and stability of the magnetic braking effect. Specifically, the two sets of floating magnet mounting bases 11 are respectively installed at symmetrical positions on the annular bracket 16, enabling them to synchronously respond to the magnetic field changes generated by the high-speed rotation of the spool 20 during operation. This causes the arc-shaped magnets 13 on the two mounting bases to approach the spool 20 in the same direction and amplitude, achieving symmetrical braking control. This effectively avoids problems such as spool 20 wobbling, delayed braking response, or unstable operation caused by uneven braking force on one side, further improving the stability of the braking system and the coaxial accuracy of the spool 20, and enhancing the overall handling feel and service life of the fishing reel.

[0033] The magnetic brake structure provided by this utility model achieves automatic adjustment and rapid response of braking force by arranging a first magnetic ring 23 and a second magnetic ring 24 in the side cover 10 and installing a magnetic induction wheel 21 that can move axially with the turbine fan blade 22 therebetween. Combined with the linkage between the upper limit pin 41 and the cam groove 224 on the rotating shaft 40 and the self-resetting function of the return spring 50, it achieves automatic adjustment of braking force and rapid response. During casting, the upper limit pin 41 disengages from the cam groove 224, thereby driving the turbine blade 22 to move and rotate towards the side cover 10. Due to the centrifugal force of the turbine blade 22 during rotation, it provides a thrust towards the side cover 10, thereby quickly pushing the magnetic induction wheel 21 into the gap between the inner and outer magnetic rings. The magnetic induction wheel cuts the magnetic field between the inner and outer magnetic rings, which can quickly generate a stable and strong magnetic damping force, thereby effectively suppressing the excessive speed of the spool 20. When the spool 20 decelerates, the centrifugal force of the turbine blade during rotation decreases, and the thrust weakens accordingly. The return spring 50 releases energy, causing the magnetic induction wheel 21 to retract faster, thereby reducing the braking force. This ensures that the braking force automatically adjusts with the speed of the spool during casting, ensuring the balance between the spool's line exit speed and the lure speed, thus ensuring smooth and stable casting. It should be noted that the axial thrust of the turbine blade 22 also prevents the turbine blade 22 from quickly exiting the gap between the first magnetic ring 23 and the second magnetic ring 24, thus avoiding the rapid disappearance of the braking force. Therefore, this magnetic braking structure can achieve dynamic matching of braking force without the need for an external adjustment mechanism, and has the advantages of fast response speed and high adjustment accuracy, thus significantly improving the handling performance and safety of the fishing reel in different fishing methods and environments.

[0034] See Figures 1-11 This embodiment also provides a fishing reel, including a fishing reel body 30, a spool 20 for reeling in and out fishing line and capable of rotating relative to the fishing reel body 30, a shaft 40 for driving the spool 20 to rotate, a side cover 10, and the magnetic brake structure.

[0035] Preferably, the rotating shaft 40 has a mounting hole 18 at the end away from the side cover 10, a lower limiting pin 45 is inserted into the mounting hole 18, a cam limiting member is provided on the fishing reel body 30, the cam limiting member is provided with multiple cam limiting grooves, and the cam limiting member is connected to a mechanical brake adjustment knob provided at the end of the fishing reel body 30.

[0036] Preferably, a bearing 44 is provided in the middle of the rotating shaft 40. This bearing 44 reduces friction during rotation, improving the smoothness and sensitivity of the rotation. The bearing 44 is a high-precision ball bearing made of wear-resistant and corrosion-resistant materials to meet the needs of fishing reels in various complex environments. The bearing 44 is installed in the bearing housing in the middle of the rotating shaft 40, ensuring coaxiality between the bearing and the rotating shaft 40 through precise fitting, avoiding vibration and noise caused by eccentricity. Simultaneously, the sealing structure of the bearing 44 effectively prevents the ingress of impurities such as moisture and sand, extending the service life of the bearing. This design allows the fishing reel to maintain good stability and handling even at high speeds, significantly improving the overall user experience.

[0037] The fishing reel provided in this application can quickly build up and maintain sufficient braking force during high-speed casting to prevent line breakage or tangling caused by excessive speed of the spool 20, thereby ensuring its handling performance and reliability in various fishing environments.

[0038] The above-disclosed embodiments are merely some preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model patent application shall still fall within the scope of the present utility model.

Claims

1. A magnetic braking structure for controlling the braking force of a fishing reel, the fishing reel comprising a spool, a shaft, and a side cover, characterized in that: The magnetic brake structure includes a magnetic ring assembly, a magnetic induction wheel, and a turbine blade. The magnetic ring assembly includes a first magnetic ring and a second magnetic ring disposed within the side cover, with a gap between the first and second magnetic rings and the second magnetic ring located on the inner side. The magnetic induction wheel is connected to the turbine blade and is located between the first and second magnetic rings. The turbine blade includes a bushing and multiple blades arranged annularly on the side of the bushing, and the bushing is fitted onto the top of the rotating shaft. The bushing has a cam groove recessed on the side away from the side cover and towards the side closer to the side cover. An upper limit pin is provided on the rotating shaft to fit the cam groove. The upper limit pin cooperates with the cam groove to make the turbine blade travel and rotate along the axis of the rotating shaft, thereby changing the distance between the magnetic induction wheel and the first magnetic ring and the second magnetic ring. A stop is provided on the side of the rotating shaft near the side cover. A return spring is sleeved on the outside of the rotating shaft between the stop and the turbine blade.

2. The magnetic braking structure as described in claim 1, characterized in that, The cam groove includes a bottom surface, an arcuate surface connected to a first side of the bottom surface and parallel to the outer surface of the bushing, a stop surface connected to a second side of the bottom surface and perpendicular to the bottom surface, and a sliding surface connected to a third side of the bottom surface and set at an acute angle to the bottom surface. The stop surface, the arcuate surface, and the sliding surface are connected end to end. The stop surface and the sliding surface are arranged opposite to each other. The sliding surface is used for the upper limit pin to slide along it, thereby driving the turbine blade to rotate and causing the turbine blade to move upward toward the side cover.

3. The magnetic braking structure as described in claim 2, characterized in that, Two cam grooves are provided, and the two cam groove shafts are arranged symmetrically with respect to the central axis of the bushing.

4. The magnetic braking structure as described in claim 1, characterized in that, A ring is connected to the outer periphery of the multiple blades, and the ring and the magnetic induction wheel are provided with matching connection holes and connection posts.

5. The magnetic braking structure as described in claim 1, characterized in that, The first magnetic ring component includes a plurality of floating magnet mounting seats arranged in a ring on the inner side of the side cover. The floating magnet mounting seats have mounting grooves on the side facing the second magnetic ring component. Arc-shaped magnets are disposed in the mounting grooves. Guide strips are provided on both sides of the floating magnet mounting seats. The guide strips and the side cover are connected by an elastic element so that the floating magnet mounting seats are floatingly mounted inside the side cover.

6. The magnetic braking structure as described in claim 5, characterized in that, The elastic element is a torsion spring.

7. The magnetic braking structure as described in claim 6, characterized in that, An annular bracket is provided on the inner side of the side cover. The annular bracket has multiple arc-shaped mounting positions for mounting the floating magnet mounting base. Each side of the arc-shaped mounting position of the annular bracket has a mounting hole. The torsion spring is installed in the mounting hole, and one end of the torsion spring is sleeved on the guide strip.

8. A fishing reel, comprising a reel body, a spool for reeling in and out fishing line and capable of rotating relative to the reel body, a shaft for driving the spool to rotate, and a side cover, characterized in that, It also includes the magnetic braking structure as described in any one of claims 1 to 7.

9. The fishing reel as described in claim 8, characterized in that, A mounting hole is provided at the end of the rotating shaft away from the side cover. A limiting pin is inserted into the mounting hole. A cam limiting component is provided on the main body of the fishing reel. The cam limiting component is provided with multiple cam limiting grooves. The cam limiting component is connected to a mechanical brake adjustment knob provided at the end of the main body of the fishing reel.

10. The fishing reel as described in claim 8, characterized in that, A bearing is provided in the middle of the rotating shaft.

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