Variable magnetic damping system of fishing reel

Abstract

The utility model relates to a variable magnetic damping system of a fishing reel, which comprises a swing arm, a supporting component used for bearing the swing arm, at least two first magnets with opposite polarities and an adjusting component capable of adjusting magnetic damping, and the head end of the swing arm is rotatably supported on the supporting component to enable the swing arm to be close to or far away from the wire wheel shaft. The wire winding device is characterized in that the adjusting component comprises a rotating component and a second magnet, wherein the rotating component can rotate relative to the supporting component, and the second magnet is arranged on the rotating component and can be matched with the first magnet; and the second magnet can approach to or be far away from the corresponding first magnet on the swing arm along with the rotation of the rotating component. Different magnetic damping effects are obtained through attraction or repulsion acting force generated by the second magnets on the first magnets at the corresponding positions of the swing arm, the overall structure is simple, adjustment is convenient, the number of brake gears is large, the swing arm does not need to be reset by means of a spring, and manufacturing is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of fishing reels, in particular to a variable magnetic damping system of a fishing reel. Background Art

[0002] During the flight of the fishing bait or when the fishing bait enters the water, due to changes in external conditions such as changes in wind direction or sudden gusts of wind, the flight speed of the fishing bait changes. However, due to inertia, the spool continues to rotate and pay out the line. As a result, a large amount of loose fishing line cannot be pulled out of the spool, causing the fishing line to knot.

[0003] To prevent this phenomenon of line explosion (also known as line tangling), a braking device is usually installed on the current fishing reels. This braking device generally uses structures such as centrifugal friction damping and magnetic damping to achieve. For example, the document with the Chinese patent authorization publication number CN107410236B discloses a double-bearing fishing reel with a magnetic damping braking device. The double-bearing fishing reel has a fishing reel main body, a spool shaft, a spool (also known as a line wheel), and a braking device. The spool shaft is rotatably supported by the fishing reel main body. The spool has a winding body part, a shaft mounting part, and a connecting wall part. The winding body part has a space inside. The shaft mounting part allows the spool shaft to pass through. The shaft mounting part is cylindrical. The connecting wall part connects the winding body part and the shaft mounting part. Part of the braking device is located in the space of the winding body part. The braking device has at least one magnet arranged opposite to the connecting wall part. The spool is braked by the magnetic force of the magnet relative to the connecting wall part. Specifically, the braking device includes a magnet mounting component for mounting the magnet. The magnet mounting component is formed in an arc shape extending in the circumferential direction and has a first end and a second end. The second end can move between a first position and a second position on the outer peripheral side of the first position. At the same time, the braking device also has a supporting component and a biasing component. The supporting component rotatably supports the first end of the magnet mounting component. The biasing component biases the second end of the magnet mounting component toward the first position side.

[0004] To meet the needs of users, the above braking device further includes an adjusting component. The adjusting component adjusts the braking force by moving axially through the supporting component. That is, by rotating the adjusting component, the engagement between the spiral groove formed on the outer peripheral surface of the cylindrical part of the adjusting component and the protrusion of the engaging part on the supporting component drives the supporting component, the magnet mounting component and the magnet on it to move axially, thereby changing the axial distance between the magnet and the connecting wall part of the spool, and finally realizing the adjustment of the magnitude of the magnetic damping force.

[0005] However, in the above-mentioned literature, only fine adjustment of the magnetic damping force can be achieved. Due to the limitation of the axial space, the adjustment range of the magnitude of the magnetic damping force is small. For this reason, the applicant has designed a fishing reel with a coarse adjustment and fine adjustment structure. For example, in the "Magnetic Damping Structure of a Fishing Reel" in the literature with Chinese Patent No. CN201820232874.X, by axially pressing the damping disc and releasing the hand after rotating by an angle, after the damping disc is axially displaced and reset under the action of the first spring, the pin shaft falls into a corresponding deeper or shallower groove, so as to change the distance between the damping disc and the magnetic block. That is, in this literature, by reasonably selecting the depth difference of each groove, the purpose of coarse adjustment of the damping force can be achieved. However, due to the addition of the damping disc, the volume of the spool increases and becomes bulky, so a greater magnetic damping force is required during braking. Utility Model Content

[0006] The technical problem to be solved by the present utility model is to provide a variable magnetic damping system for a fishing reel with a more reasonable structure and capable of conveniently adjusting the magnitude of the magnetic damping force according to the current situation of the prior art.

[0007] The technical solution adopted by the present utility model to solve the above technical problem is: a variable magnetic damping system for a fishing reel, which is installed on one side of the spool of the fishing reel. The variable magnetic damping system includes a swing arm, a supporting member for carrying the swing arm, at least two first magnets with opposite polarities, and an adjusting member for adjusting the magnetic damping magnitude. At least one of the first magnets is installed on the swing arm, and the head end of the swing arm is rotatably supported on the supporting member so that the swing arm can approach or move away from the spool shaft. The feature is that: the adjusting member includes a rotating member that can rotate relative to the supporting member and a second magnet installed on the rotating member and capable of cooperating with the first magnet. The second magnet can approach or move away from the corresponding first magnet on the swing arm as the rotating member rotates, so that the swing arm swings outward or inward.

[0008] In the above solution, in order to obtain more magnetic damping force gears, at least two first magnets on the swing arm are distributed at intervals, and the adjacent first magnets are arranged with opposite polarities.

[0009] Furthermore, when the number of the first magnets on the swing arm is odd, an auxiliary magnet adjacent to the head end or the tail end of the swing arm is also installed on the supporting member, and the auxiliary magnet is arranged with the opposite polarity to the adjacent first magnet. In this way, as many magnet groups as possible can be obtained in a limited space to better meet the use requirements.

[0010] Considering that the spool should be evenly stressed during braking, it is preferable that there are multiple swing arms, which are respectively supported on the supporting member circumferentially in sequence with the head and tail opposite to each other. Correspondingly, the number of the second magnets matches the number of the swing arms.

[0011] In each of the above solutions, a further improvement is that radial holes are formed on the circumferential surface of the rotating member, and a positioning post with its head exposed and a spring that abuts against the positioning post to keep the head of the positioning post always having a tendency to be exposed are constrained in the radial holes. Positioning grooves corresponding to the number of the first magnets on the swing arm are circumferentially arranged at intervals on the inner wall of the supporting member. When the second magnet corresponds to the first magnet on the swing arm, the positioning post can successively fall into the corresponding positioning grooves as the rotating member rotates. In this way, the impact sound generated when the positioning post falls into the corresponding positioning groove is used to remind the user that the required gear has been rotated to, so as to improve the experience during use.

[0012] In the above improvement solution, preferably, the supporting member includes a supporting seat and a fixing ring. The supporting seat further includes a seat body, a first cylinder body extending along the axial direction of the wire wheel shaft towards the wire wheel side on one end face of the seat body, and a second cylinder body that also extends along the axial direction of the wire wheel shaft and communicates with the first cylinder body on the other end face of the seat body. The fixing ring is fixed on the top surface of the extending end of the first cylinder body. The rotating member is sleeved on the second cylinder body, and the swing arm is located on the outer circumference of the first cylinder body. Such a structure is conducive to installing the swing arm and the rotating member and ensuring their coaxial distribution.

[0013] To prevent the rotating member from rotating excessively, preferably, an arc-shaped long hole and a limit pin that can be inserted into the arc-shaped long hole and slide relative to the arc-shaped long hole as the rotating member rotates are provided between the rotating member and the seat body.

[0014] At the same time, gear position marks of magnetic damping magnitude can be provided at the edge of the arc-shaped long hole, so that the user can intuitively know the gear position.

[0015] To apply force to the rotating member conveniently, preferably, a protrusion for applying force is further provided on the rotating member, and an arc-shaped operation hole is formed on the seat body, and the protrusion is exposed in the arc-shaped operation hole.

[0016] More practically, limiting arms corresponding to the number of swing arms extend circumferentially on the outer circumferential surface of the first cylinder body, and a limiting groove for the tail end of the corresponding swing arm to extend into is formed between the limiting arm and the outer circumferential surface of the first cylinder body to limit the swing amplitude of the swing arm.

[0017] Furthermore, the swing arm is formed by splicing an upper arm body and a lower arm body, and a magnetic isolation sheet is provided in the upper and lower arm bodies. The first magnet is embedded on the outer side surface of the swing arm outside the magnetic isolation sheet. By using the magnetic isolation sheet, the magnetic lines of force are made to face the wire wheel as much as possible to ensure the magnetic damping effect.

[0018] Compared with the prior art, since the adjusting component of the present utility model adopts a rotating component with a second magnet, during adjustment, only one rotating action can drive the second magnet to rotate, and can exert an attractive or repulsive force on the first magnet at the corresponding position on the swing arm. At the same time, by using different distances (i.e., force arms) from each first magnet to the pin shaft, different magnetic damping effects are obtained at each first magnet, thereby obtaining different magnetic damping gears for the user to select. Moreover, such an adjustment method has a simple structure, is convenient to adjust, has multiple braking gears, and the swing arm does not need to be reset by a spring, making it more convenient to manufacture and having a lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic cross-sectional view of an embodiment of the present utility model installed on a fishing reel;

[0020] Figure 2 is Figure 1 a three-dimensional schematic view (first gear) after the line wheel and the side cover are separated after removing the main body of the fishing reel in

[0021] Figure 3 is Figure 2 a three-dimensional schematic view after the fixing ring is separated from the seat body after removing the line wheel in

[0022] Figure 4 is Figure 3 a further three-dimensional exploded view of

[0023] Figure 5 is Figure 4 a further three-dimensional exploded view of

[0024] Figure 6 is Figure 5 a three-dimensional exploded view in another direction of

[0025] Figure 7 is Figure 2 a three-dimensional schematic view (second gear, maximum magnetic damping force) after the pushing protrusion rotates clockwise by an angle after removing the line wheel in

[0026] Figure 8 is Figure 7 a three-dimensional schematic view (third gear, magnetic damping force at intermediate value) after continuing to push the protrusion to rotate clockwise by an angle in

[0027] Figure 9 is Figure 1 a schematic cross-sectional view when the supporting component and the rotating component rise to the highest position axially during fine adjustment by rotating the knob in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present utility model will be further described in detail below in conjunction with the embodiments of the drawings.

[0029] As shown Figures 1 to 9 in the figure, the variable magnetic damping system in this embodiment is installed on a fishing reel. The fishing reel includes a main body 10 of the fishing reel, a spool 20, and a side cover 30. The spool 20 is installed on a spool shaft 40. The spool 20 in the figure is the same as that in the prior art and has a winding body portion 201, a shaft mounting portion 202, and a connecting wall portion 203. The winding body portion 201 has a space inside. The shaft mounting portion 202 is designed as a cylindrical body for the spool shaft 40 to pass through. The connecting wall portion 203 connects the winding body portion 201 and the shaft mounting portion 202. Both ends of the spool shaft 40 are also supported on the main body 10 and the side cover 30 through a first bearing A1 and a second bearing A2, so that the spool 20 can rotate together with the spool shaft 40. Since these are all prior arts, they will not be elaborated here.

[0030] The above variable magnetic damping system is installed on one side of the spool 20 of the fishing reel. In the figure, it is constrained on the side cover 30 of the fishing reel and can partially extend into the space of the winding body portion 201 of the above spool 20. The variable magnetic damping system includes a swing arm 1, a support member 2, a first magnet 3, and an adjustment member 4 that can adjust the magnetic damping magnitude. The support member 2 is constrained on the side cover 30 and used to carry the swing arm 1. For the convenience of installing the swing arm 1, the support member 2 preferably adopts the following structure: it includes a support seat 21 and a fixing ring 22. The support seat 21 further includes a seat body 211, a first cylinder 212 provided on one end face of the seat body 211 and extending along the axial direction of the spool shaft toward the connecting wall portion 203 side, and a second cylinder 213 provided on the other end face of the seat body 2113 and also extending along the axial direction of the spool shaft and communicating with the first cylinder. The fixing ring 22 is fixed on the top surface of the extending end of the first cylinder 212 through bolts. The number of swing arms 1 can be one or more. In the figure, two swing arms are adopted and are respectively circumferentially supported on the above support member 2 in sequence with their heads and tails opposite to each other. Specifically, in combination with the structure of the above support member 2, each swing arm 1 is located outside the first cylinder 212 and extends circumferentially along the outer peripheral surface of the first cylinder 212. The head end of each swing arm 1 is supported on the fixing ring 22 and the seat body 211 through a pin shaft 5. That is, the same as in the prior art, the tail end of each swing arm 1 can swing between the first position and the second position closer to the outer peripheral side than the first position, so that each swing arm 1 can approach or move away from the first cylinder. That is, the swing arm can approach or move away from the spool shaft 40.

[0031] There are at least two first magnets 3 in the above variable magnetic damping system. At least one first magnet needs to be installed on the swing arm 1, or all the first magnets 3 are installed on the swing arm 1. In the figure, considering the installation space, three first magnets 3 are installed on each swing arm 1, and the fourth first magnet (for the convenience of identification, the fourth first magnet can also be called an auxiliary magnet 3a, please refer to Figure 2) It is placed on the side of the first cylinder body 212, adjacent to the first magnet at the head end (or tail end) of the swing arm, and the polarities of adjacent first magnets among the four first magnets are set to be opposite. That is, on the inner wall of the winding body part 201 facing the wire wheel, the polarities of the four first magnets are arranged in the form of N, S, N, S or S, N, S, N respectively, so that every two form a group of magnetic coupling.

[0032] In order to ensure the magnetic damping effect, a magnetic isolation sheet 1c is preset in the swing arm 1 to ensure that the magnetic lines of force generated by the outer groups of first magnets act on the wire wheel 20 as much as possible. To facilitate the installation of the magnetic isolation sheet 1c, the above swing arm is composed of an upper arm body 1a and a lower arm body 1b spliced together, and the three first magnets 3 are buried on the outer side surface of the swing arm 1 outside the magnetic isolation sheet 1c at circumferential intervals.

[0033] Same as the prior art, on the outer peripheral surface of the above first cylinder body 212, a limiting arm 214 corresponding to the number of swing arms 1 extends circumferentially. A limiting groove 215 for the tail end of the corresponding swing arm to extend into is formed between the limiting arm 214 and the outer peripheral surface of the first cylinder body 212 to limit the swing amplitude of the swing arm 1.

[0034] During use, same as the prior art, when the wire wheel 20 pays out the wire and rotates, it will cut the magnetic lines generated by each group of first magnets 3 and generate an induced current, and thus will attract each swing arm 1 to swing outward around the pin shaft 5 (the suction force at this time is called the first acting force). For the wire wheel, at this time the magnetic lines of force are denser, and thus a greater magnetic damping force will be generated. When the rotation speed of the wire wheel 20 is greater, the induced current on it is greater, the suction force of the generated magnetic field on the first magnet 3 increases, and thus the swing arm 1 will be closer to the inner wall of the winding body part 201, and the magnetic damping force is greater.

[0035] During use, in order to quickly adjust the magnitude of the magnetic damping force and obtain different magnetic damping gears, in this embodiment, the above-mentioned adjusting member 4 is improved. Specifically, the adjusting member 4 includes a rotating member 41 that can rotate relative to the supporting member 2 and a second magnet 42 mounted on the rotating member 41 and capable of cooperating with the first magnet 3. The second magnet 42 can approach or move away from each first magnet 3 on the swing arm as the rotating member 41 rotates. In this way, by relying on the magnetic force of the second magnet 42, an attractive or repulsive force (this attractive or repulsive force is referred to as the second acting force) is generated on the corresponding first magnet 3 on the swing arm 1. Since the swing arm 1 is hinged to the supporting member 2, the swing arm 1 swings outward or inward, that is, the swing arm 1 makes an opening or closing movement. And using the lever principle, the torque generated by the second acting force acting on the first magnet at the head end of the swing arm or the torque generated by the second acting force acting on the first magnet at the tail end of the swing arm is different. Therefore, for the three first magnets 3 on the swing arm 1, there are three different forms of magnetic force swing arm states, so that the suppression of the rotational speed of the wire wheel 20 by the first magnet 3 on the swing arm has three different magnetic damping effects. As long as the user selects the desired state, the required braking effect can be achieved.

[0036] Specifically, in the figure, the rotating member 41 is a sheet-like body with a through hole. The rotating member 41 is sleeved on the second cylinder body 213 of the above-mentioned supporting member 2 through the through hole, so that the rotating member 41 can rotate smoothly around the second cylinder body 213 relative to the supporting member 2. Corresponding to the two swing arms 1, two second magnets 42 are correspondingly provided. And in order to enable the user to clearly and intuitively know the gear position during the adjustment process, a gear position identifier for the magnitude of the magnetic damping force is provided between the rotating member 41 and the supporting member 2. It can also be in accordance with the structure in Figure 4 、 5 、6, that is, a spring post is installed on the side surface of the rotating member 41. Specifically, a radial hole 411 is opened on the side surface of the rotating member 41. A positioning post 43 with its head exposed is constrained in the radial hole 411, and a spring 44 that abuts against the positioning post 43 and makes the head of the positioning post always have a tendency to be exposed. On the inner side wall of the seat body 211, positioning grooves 216 corresponding to the number of the first magnets 3 on the swing arm 1 are circumferentially spaced apart. When the second magnet 42 rotates with the rotating member 41 to correspond to one of the first magnets 3 on the swing arm 1, the positioning post 43 falls into the corresponding positioning groove 216 under the action of the spring 44, and the head of the positioning post 43 hits the bottom of the positioning groove 216 to generate a sound to prompt the user that the corresponding gear position has been rotated to.

[0037] To prevent the over-rotation of the rotating member 41, an arc-shaped long hole and a limit pin that can be inserted into the arc-shaped long hole and relatively slide in the arc-shaped long hole as the rotating member rotates can be provided between the above-mentioned seat body 211 and the rotating member 41. The above gear position mark can be located at the edge of the arc-shaped long hole. In the figure, the arc-shaped long hole 412 is formed on the rotating member 41, and the limit pin 45 is a screw that is fixed to the seat body 211 after passing through the arc-shaped long hole 412. Of course, the arc-shaped long hole can also be formed on the seat body, and the limit pin is arranged on the rotating member. And to apply force to the rotating member 41 conveniently, a protrusion 413 is also provided on the rotating member 41. Corresponding to the protrusion 413, an arc-shaped operation hole 217 is formed on the above-mentioned seat body 211, so that the protrusion 413 is exposed outside the arc-shaped operation hole to facilitate the user to touch the protrusion 413.

[0038] When adjustment is needed, just remove the side cover 30 from the main body 10 of the fishing reel (the connection structure between the side cover and the main body of the fishing reel is the prior art, and the structures in documents such as Chinese Patent No. CN202220785020.4 and CN20212133247.6 can be referred to. Of course, other existing structures can also be adopted). At this time, the variable magnetic damping system constrained on the side cover 30 is exposed. By pushing the protrusion 413, the magnitude of the magnetic damping force can be conveniently adjusted. Specifically, as Figure 2 shown in the figure, at this time, the second magnet 42 is adjacent to the first magnet 3 at the head end of the swing arm 1, that is, in the first gear position. In the figure, the second magnet 42 has the same polarity as the first magnet 3, so that the swing arm 1 is repelled and swings inward (towards the axis) by the second acting force. This second acting force is opposite to the direction of the first acting force generated on the swing arm when the fishing line spool rotates out. Therefore, the magnetic damping force at the first gear position is the smallest. When the protrusion 413 is pushed to make the rotating member 41 rotate Figure 2 in the clockwise direction as shown in the figure to Figure 7 the state shown, the second magnet 42 corresponds to the first magnet 3 at the middle position on the swing arm. At this time, it is the second gear position. At this time, the second magnet 42 has the opposite polarity to the first magnet 3 and attracts each other. This attraction force is in the same direction as the above first acting force. Therefore, the combined magnetic damping force in this state is the largest. If the protrusion 413 is continuously pushed to make the rotating member 41 continue to rotate clockwise to Figure 8 the state shown, at this time, it is the third gear position. The second magnet 42 is adjacent to the first magnet 3 at the tail end of the swing arm 1. Since their polarities are the same, a repulsive force will be generated again. And since the first magnet is far from the pin shaft 5 at the head end of the swing arm at this time, the moment generated by the repulsive force at the third gear position on the swing arm is greater than the moment generated by the repulsive force at the first gear position on the swing arm. That is, at this time, the combined magnetic damping force is between the magnetic damping force at the first gear position and the magnetic damping force at the second gear position.

[0039] Obviously, after adopting this embodiment, during adjustment, only one rotation action can drive the second magnet to rotate and exert a force on the first magnets at different positions, ultimately affecting the magnitude of the magnetic damping force when the wire wheel pays out the wire. Moreover, such an adjustment method has a simple structure and is convenient to adjust. No additional structure needs to be added to the wire wheel, making the wire wheel relatively small in volume and lightweight. It can achieve the same braking effect with a smaller magnetic damping force. Additionally, according to the number of the first magnets arranged on the swing arm, more braking gears can be obtained, and the swing arm does not need to be reset by a spring, which is more convenient to manufacture and has a lower cost.

[0040] Similarly, in this embodiment, in order to conveniently and finely adjust the magnetic damping force, a partially exposed knob 6 and a driving member 7 for driving the variable magnetic damping system to axially move are also provided on the side cover. The knob 6 and the driving member 7 can adopt existing technologies. In the figure, on the opposite end faces of the driving member 7 and the knob 6, there are annular rings 71 with helically rising end faces and annular grooves 61 with helically descending bottoms that cooperate with each other. Moreover, two connecting columns 72 extend from the driving member 7, and each connecting column 72 passes through the damping seat 8 and is connected to the seat body 211 in the supporting member 2 (in the figure, a screw passes through the mounting hole in the seat body 211 and is threadedly connected to the screw hole in the connecting column 72). The arrangement of the connecting columns 72 is to prevent interference with the rotation of the rotating member 41, and an avoidance groove 414 is opened on the circumferential surface of the above-mentioned rotating member. At the same time, a first return spring 9 is arranged between the driving member 7 and the damping seat 8, or a second return spring (not shown in the figure) is sleeved on the connecting column, so that the driving member 7 and the knob 6 are always engaged. The above-mentioned damping seat 8 covers the seat body 211 and is fixed to the side cover 30 by three screws. In this way, after the variable magnetic damping system is constrained to the side cover 30 through the damping seat 8, it can still axially move relative to the damping seat 8.

[0041] When the magnetic damping force needs to be finely adjusted specifically, as long as the knob 6 is rotated, at this time, through the cooperation of the annular ring and the annular groove between it and the driving member 7, the driving member 7 can be pushed to axially move towards the wire wheel side or away from the wire wheel side (under the restoring force of the first return spring or the second return spring), thereby subtly changing the distances between the first magnets 3, the second magnets 42 and the wire wheel 20. For example, Figure 1 in the figure, when the supporting member 2 and the rotating member 41 axially descend to the lowest position, the magnetic damping force becomes smaller; conversely, when the knob 6 is rotated in the reverse direction to make the supporting member 2 and the rotating member 41 axially rise to the highest position, as Figure 9 shown in the figure, at this time, the magnetic damping force becomes larger.

[0042] In the above preferred embodiment, the first magnet 3 on the swing arm 1 directly acts on the winding body part 201 of the wire wheel 20. In addition, the first magnet 3 on the swing arm 1 can also be installed on the end face of the swing arm to directly act on the connecting wall part 203 of the wire wheel; or the first magnet 3 on the swing arm 1 can indirectly magnetically damp the wire wheel. For example, similar to the prior art, a damping disc that can be inserted into the fixing ring 22 and the support seat 21 is directly fixed on the wire wheel shaft 40, and the first magnet acts on the damping disc, so as to indirectly brake the wire wheel. Or, teeth are provided on the circumferential surface of the rotating member 41, and a gear or a gear set that meshes with the teeth is arranged on the side cover, and the gear or the gear set is driven by an operation button exposed outside the side cover, so as to drive the rotating member to rotate. Or the supporting member adopts other structures. Or a fine-tuning damping force structure with other structures is selected. That is, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A variable magnetic damping system for a fishing reel, mounted on one side of a reel (20) of the fishing reel, the variable magnetic damping system comprising a swing arm (1), a support component (2) for carrying the swing arm (1), at least two first magnets (3) with opposite polarities, and an adjustment component (4) capable of adjusting the magnitude of magnetic damping, wherein at least one of the first magnets (3) is mounted on the swing arm (1), and the head end of the swing arm (1) is rotatably supported on the support component (2) so that the swing arm (1) can be moved close to or away from a reel shaft (40), characterized in that: The adjusting component (4) comprises a rotating component (41) which can rotate relative to the supporting component (2) and a second magnet (42) mounted on the rotating component (41) and capable of cooperating with the first magnet (3). The second magnet can approach or move away from the corresponding first magnet (3) on the swing arm (1) as the rotating component (41) rotates, so that the swing arm can swing outward or inward.

2. The variable magnetic damping system according to claim 1, characterized in that: There are at least two first magnets (3) on the swing arm (1) that are spaced apart from each other, and adjacent first magnets (3) are arranged with opposite polarities.

3. The variable magnetic damping system according to claim 2, characterized in that: When the number of the first magnets (3) on the swing arm (1) is an odd number, an auxiliary magnet (3a) adjacent to the head end or the tail end of the swing arm (1) is also mounted on the support component (2), and the polarity of the auxiliary magnet (3a) is opposite to that of the adjacent first magnet (3).

4. The variable magnetic damping system according to claim 1, characterized in that: There are a plurality of swing arms (1), which are respectively supported on the support component (2) in a circumferential direction in a head-to-tail relationship. Correspondingly, the number of the second magnets (42) matches the number of the swing arms (1).

5. The variable magnetic damping system according to any one of claims 1 to 4, characterized in that: A radial hole (411) is formed on the circumferential surface of the rotating component (41), a positioning column (43) with its head exposed and a spring (44) abutting against the positioning column (43) so that the head of the positioning column always has a tendency to be exposed are constrained in the radial hole (411), and positioning grooves (216) corresponding to the number of the first magnets (3) on the swing arm (1) are provided on the inner wall of the supporting component (2) at intervals in the circumferential direction, and when the second magnets (42) correspond to the first magnets (3) on the swing arm (1), the positioning columns (43) can fall into the corresponding positioning grooves (216) in sequence as the rotating component (41) rotates.

6. The variable magnetic damping system according to any one of claims 1 to 4, characterized in that: The support component (2) comprises a support seat (21) and a fixing ring (22), wherein the support seat (21) further comprises a seat body (211), a first cylinder body (212) arranged on one end surface of the seat body and extending axially along the reel shaft (40) toward the reel side, and a second cylinder body (213) arranged on the other end surface of the seat body and extending axially along the reel shaft (40) and intersecting with the first cylinder body, the fixing ring (22) being fixed on the top surface of the extended end of the first cylinder body (212), the rotating component (41) being sleeved on the second cylinder body (213), and the swing arm (1) being located on the outer periphery of the first cylinder body (212).

7. The variable magnetic damping system according to claim 6, characterized in that: An arc-shaped long hole (412) and a limiting pin (45) which can be inserted into the arc-shaped long hole and can slide relative to the arc-shaped long hole as the rotating component (41) rotates are provided between the rotating component (41) and the seat body (211).

8. The variable magnetic damping system according to claim 7, characterized in that: A gear position mark indicating the magnitude of magnetic damping is provided at the edge of the arc-shaped long hole (412).

9. The variable magnetic damping system according to claim 6, characterized in that: The rotating component (41) is also provided with a protrusion (413) for facilitating force application, and the seat body (211) is provided with an arc-shaped operating hole (217), and the protrusion (413) is exposed in the arc-shaped operating hole (217).

10. The variable magnetic damping system according to any one of claims 1 to 4, characterized in that: The swing arm (1) is composed of an upper arm body (1a) and a lower arm body (1b), and a magnetic shielding sheet (1c) is provided in the upper and lower arm bodies. The first magnet (3) is embedded in the outer surface of the swing arm (1) outside the magnetic shielding sheet (1c).

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