Electromagnetic brake mechanism, water dropper wheel and fishing tackle

Abstract

The utility model discloses an electromagnetic brake mechanism which comprises a wire wheel. The magnetic assembly comprises a magnetic ring and at least one coil, and the magnetic ring is arranged on the rotating shaft of the wire wheel in a sleeving mode and comprises a plurality of magnets arranged in a Halbach array mode; and the brake control circuit is connected with the coil so as to form a closed loop with the coil according to the rotating speed of the wire wheel, so that an induction electromagnetic field is generated, and brake force for inhibiting the rotation of the wire wheel is formed. The magnetic ring in the magnetic assembly is composed of a plurality of magnets which are arranged in a Halbach array, so that magnetic induction lines of the magnetic ring are denser, the magnetic field intensity is improved, strong magnetic force can be achieved by using small magnets, the effect that the small magnets have large magnetic force is achieved, and the magnetic field intensity is improved. And the size of the magnetic ring can be reduced under the same magnetic force intensity, so that the overall weight of the reel is reduced, and the user experience is improved. The utility model further discloses the water dripping wheel and a fishing tackle.

Description

Technical Field

[0001] The utility model relates to the field of fishing appliances, and more specifically to an electromagnetic brake mechanism, a spinning reel, and a fishing tackle. Background Art

[0002] A fishing reel is one of the essential fishing appliances for casting a (sea) rod. Existing spinning reels and fishing tackles with electromagnetic brakes can generate a sufficient braking force during use. Usually, magnets with a sufficient volume are installed on the spool of the spinning reel, which greatly increases the weight of the spool, restricting the casting of small-weight baits and affecting the user experience. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an electromagnetic brake mechanism, a spinning reel, and a fishing tackle that can reduce the weight of the spool.

[0004] To solve the above technical problem, according to one aspect of the utility model, an electromagnetic brake mechanism is provided, including:

[0005] A spool;

[0006] A magnetic force assembly, including a magnetic ring and at least one coil. The magnetic ring is sleeved on the rotating shaft of the spool and includes a plurality of magnets arranged in a Halbach array.

[0007] A brake control circuit, connected to the coil, to form a closed loop with the coil according to the rotation speed of the spool to generate an induced electromagnetic field, thereby forming a braking force to inhibit the rotation of the spool.

[0008] A further technical solution thereof is that the magnetic force assembly further includes a mounting assembly. The mounting assembly includes a first bracket fixed inside the spool. The magnetic ring is located on the upper surface of the first bracket and is located at the end face of the spool.

[0009] A further technical solution thereof is that the mounting assembly further includes a second bracket located above the magnetic ring, and the coil is located on the second bracket.

[0010] A further technical solution thereof is that the magnetic force assembly further includes a mounting assembly. The mounting assembly includes a third bracket. The coil is installed inside the spool through the third bracket. The number of coils is four, and the four coils are arranged around the magnetic ring in a surrounding manner and are connected in series and then connected to the brake control circuit.

[0011] A further technical solution thereof is that the third bracket includes a hollow mounting cylinder. The four coils are embedded in the mounting cylinder, and the magnetic ring is located in the mounting cylinder, and the rotating shaft passes through the magnetic ring.

[0012] Its further technical solution is as follows: The electromagnetic braking mechanism further includes a side cover assembly covering one side of the wire wheel, and the rotating shaft of the wire wheel passes through the magnetic ring and is located inside the side cover assembly.

[0013] Its further technical solution is as follows: The braking control circuit includes a sensor, a controller, and two MOS transistors. The sensor is used to detect the rotation speed of the wire wheel. The number of coils is four. The four coils are connected in series between the drains of the two MOS transistors. The sources of the two MOS transistors are both grounded. The controller is connected to the sensor and the gates of the two MOS transistors to obtain the wire speed according to the rotation speed of the wire wheel, and control the operation of the MOS transistors according to the rotation speed and wire speed of the wire wheel, thereby forming a closed loop.

[0014] To solve the above technical problems, according to another aspect of the present invention, a fishing reel is provided, which includes a fishing reel main body and an electromagnetic braking mechanism connected to the fishing reel main body, and the electromagnetic braking mechanism is the above-mentioned electromagnetic braking mechanism.

[0015] To solve the above technical problems, the present invention also provides a fishing tackle, which includes the above-mentioned fishing reel.

[0016] Compared with the prior art, the magnetic ring in the magnetic force assembly of the present invention is composed of a plurality of magnets arranged in a Halbach array, which can make the magnetic induction lines of the magnetic ring more concentrated, thereby increasing the magnetic field strength. Therefore, a smaller magnet can be used to achieve a stronger magnetic force, realizing the effect of small magnets having large magnetic force. Then, at the same magnetic force intensity, the size of the magnetic ring can be reduced, thereby reducing the overall weight of the wire wheel and improving the user experience. Moreover, the magnetic induction lines of the magnetic ring are concentrated above the magnetic ring and less at the bottom of the magnetic ring, which can also reduce the influence on the bearing in the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the first embodiment of the electromagnetic braking mechanism of the present invention.

[0018] Figure 2 is an exploded structural schematic diagram of the first embodiment of the electromagnetic braking mechanism of the present invention.

[0019] Figure 3 is a cross-sectional schematic diagram of the first embodiment of the electromagnetic braking mechanism of the present invention.

[0020] Figure 4 is Figure 2 a specific structural schematic diagram of the magnetic ring in the electromagnetic braking mechanism shown.

[0021] Figure 5 is an exploded structural schematic diagram of the second embodiment of the electromagnetic braking mechanism of the present invention.

[0022] Figure 6It is a cross-sectional schematic view of the second embodiment of the electromagnetic brake mechanism of the present utility model. Detailed implementation manners

[0023] In order to enable those of ordinary skill in the art to more clearly understand the purpose, technical solution and advantages of the present utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Referring to Figures 1 to 4 , Figures 1 to 4 shows the first embodiment of the electromagnetic brake mechanism 1 of the present utility model. In the embodiment shown in the accompanying drawings, the electromagnetic brake mechanism 1 includes a wire wheel 10, a magnetic force assembly 20 and a brake control circuit; wherein, the magnetic force assembly 20 includes a magnetic ring 21 and at least one coil 22, the magnetic ring 21 is used to generate magnetic induction lines, sleeved on the rotating shaft 11 of the wire wheel 10, and includes a plurality of magnets 211 arranged in a Halbach array (such as Figure 2 and Figure 4 shown); the brake control circuit is connected to the coil 22 to form a closed loop with the coil 22 according to the rotation speed of the wire wheel 10 to generate an induced electromagnetic field, so as to form a braking force that inhibits the rotation of the wire wheel 10. Based on the above design, the magnetic ring 21 in the magnetic force assembly 20 of the present utility model is composed of a plurality of magnets 211 arranged in a Halbach array, which can make the magnetic induction lines above the magnetic ring 21 more concentrated, thereby increasing the magnetic field strength. Then, a smaller magnet can be used to achieve a stronger magnetic force, achieving the effect of a small magnet having a large magnetic force. Then, at the same magnetic force intensity, the size of the magnetic ring 21 can be reduced, thereby reducing the overall weight of the wire wheel 10 and improving the user experience. Moreover, the magnetic induction lines of the magnetic ring 21 are concentrated above the magnetic ring 21 and less at the bottom of the magnetic ring, which can also reduce the influence on the bearing in the rotating shaft 11. During operation, the magnetic ring 21 forms a permanent magnetic field. During the rotation of the magnetic ring 21 following the wire wheel 10, since the coil 22 is in the magnetic field, when the brake control circuit detects that the wire wheel 10 rotates too fast, it can close its circuit with the coil 22, causing the coil 22 to generate an induced current, thereby generating an induced electromagnetic field. According to Lenz's law, a torque that hinders the movement of the magnetic ring 21 is generated to hinder the movement of the magnetic ring 21, that is, a torque (braking force) opposite to the rotation direction of the wire wheel 10 is generated to inhibit the rotation of the wire wheel 10.

[0025] Continuing to refer to Figure 2 and Figure 3, in this embodiment, the magnetic assembly 20 further includes an installation assembly 23. The installation assembly 23 includes a first bracket 231 and a second bracket 232. The first bracket 231 is fixed inside the wire wheel 10. The magnetic ring 21 is located on the upper surface of the first bracket 231 and at the end face of the wire wheel 10. The second bracket 232 is located above the magnetic ring 21, and the coil 22 is located on the second bracket 232. Preferably, in this embodiment, the number of the coils 22 is four. The four coils 22 are arranged on the upper surface of the second bracket 232, and the four coils 22 can be connected in series through wires and then connected to the brake control circuit. Understandably, in some other embodiments, the number of the coils 22 can be increased or decreased according to actual requirements. Based on the above design, in this embodiment, the coil 22 is located above the magnetic ring 21, and the magnets 211 arranged in a Halbach array can make the magnetic induction lines above the magnetic ring 21 more dense, so that the coil 22 can generate a strong induced electromagnetic field, and then can quickly inhibit the rotation of the wire wheel 10.

[0026] In some embodiments, the electromagnetic brake mechanism 1 further includes a side cover assembly 30 covering one side of the wire wheel 10. The rotating shaft 11 of the wire wheel 10 passes through the magnetic assembly 20 and is placed inside the side cover assembly 30, and the second bracket 232 can be fixed on the side cover assembly 30.

[0027] In some embodiments, the brake control circuit may include a sensor, a controller, and two MOS transistors. The sensor is used to detect the rotation speed of the wire wheel 10. Four of the coils 22 are connected in series between the drains of the two MOS transistors. The sources of the two MOS transistors are both grounded. The controller is connected to the sensor and the gates of the two MOS transistors to obtain the wire-out speed based on the rotation speed of the wire wheel 10, and to control the operation of the MOS transistors according to the rotation speed of the wire wheel 10 and the wire-out speed, thereby forming a closed loop. Preferably, the sensor may be a Hall sensor, and the controller may be a microcontroller or a single-chip microcomputer, etc. Understandably, the controller and the MOS transistors may be arranged on a circuit board, and the circuit board may be located within the side cover assembly 30. The controller may also change the magnitude of the braking force by controlling and adjusting the conduction time of the two MOS transistors to automatically adjust the braking force and balance the rotation speed of the wire wheel 10 and the wire-out speed. When braking is required, the two MOS transistors are turned on simultaneously, and the four coils 22 are short-circuited to form a closed loop. Each coil 22 forms an induced electromagnetic field. Understandably, the polarity of this induced electromagnetic field may be the same as or opposite to the polarity of the permanent magnetic field generated by the magnetic ring 21. According to Lenz's law, the electromagnetic field of the induced current always obstructs the change in the magnetic flux that causes the induced current. Therefore, when the permanent magnetic field formed by the magnetic ring 21 increases, the polarity of the induced electromagnetic field generated by the coil 22 is opposite to the permanent magnetic field, and when the permanent magnetic field weakens, the polarity of the induced electromagnetic field of the coil 22 is the same as the permanent magnetic field, and a torque that obstructs the movement of the magnetic ring 21 is always generated, thereby obstructing the rotation of the wire wheel 10; it can be seen that when the wire wheel 10 rotates continuously at a high speed, a continuous braking torque can be formed to complete the braking action; and by adjusting the closing time of the coil 22, that is, adjusting the conduction time of the two MOS transistors, the magnitude of the braking force can be adjusted. When the conduction time becomes longer, the braking force increases, and when the conduction time becomes shorter, the braking force decreases.

[0028] As can be seen from the above, by changing the placement position of the magnet 211 and arranging it in a Halbach array, the magnetic induction lines of the magnetic ring 21 can be made more concentrated, thereby increasing the magnetic field strength. Then, a smaller magnet can be used to achieve a stronger magnetic force. At the same magnetic force intensity, the size of the magnetic ring 21 can be reduced, thereby reducing the overall weight of the wire wheel 10 and improving the user experience. Moreover, the magnetic induction lines of the magnetic ring 21 are concentrated above the magnetic ring 21 and less at the bottom of the magnetic ring 21, which can also make the coil 22 located above the magnetic ring 21 generate a stronger induced electromagnetic field, and at the same time, the influence on the bearings in the rotating shaft 11 can be reduced.

[0029] Refer to Figures 5 to 6 , Figures 5 to 6The second embodiment of the electromagnetic braking mechanism 1 of the present utility model is shown. The difference between this embodiment and the first embodiment lies in the positions of the magnetic ring 21 and the coil 22 in the magnetic force assembly 20 and the mounting assembly 23, and the rest of the structures are similar or the same. In this embodiment, the mounting assembly 23 includes a third bracket 233. The coil 22 is mounted in the wire wheel 10 through the third bracket 233. The number of the coils 22 is four. The four coils 22 are arranged around the magnetic ring 21, and after the four coils 22 are connected in series, they are connected to the brake control circuit. Specifically, the third bracket 233 includes a hollow mounting cylinder 2331. The four coils 22 are embedded in the mounting cylinder 2331, and the magnetic ring 21 is located in the mounting cylinder 2331. The rotating shaft 11 passes through the magnetic ring 21, and the magnetic ring 21 is fixed on the rotating shaft 11. In order to stabilize the position of the magnetic force assembly 20, the third bracket 233 further includes a connecting portion 2332 extending outward and upward from the top surface edge of the mounting cylinder 2331. The connecting portion 2332 is fixed on the side cover assembly 30. This embodiment can also achieve the purpose of reducing the overall weight of the wire wheel 10, and can also automatically adjust the magnitude of the braking force.

[0030] Understandably, in other embodiments of the present utility model, a fishing reel can also be provided, which includes a fishing reel main body and the electromagnetic braking mechanism of the above embodiment. The wire wheel and the like in the electromagnetic braking mechanism can be assembled in the fishing reel main body, and the side cover assembly is connected to the fishing reel main body. At the same time, a fishing tackle including the above fishing reel can also be provided. Except for the fishing reel, the rest of the structures of the fishing tackle can be the same as those of the common fishing tackles in the prior art. For example, a fishing rod, a fishing line, etc. can be provided, and its structure is well known to those skilled in the art and will not be described in detail here.

[0031] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Those skilled in the art can make various equivalent changes and improvements based on the above embodiments. Any equivalent changes or modifications made within the scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. An electromagnetic braking mechanism, characterized in that, The electromagnetic braking mechanism includes: A wire wheel; A magnetic force assembly, including a magnetic ring and at least one coil. The magnetic ring is sleeved on the rotating shaft of the wire wheel and includes a plurality of magnets arranged in a Halbach array; A brake control circuit, connected to the coil, to form a closed loop with the coil according to the rotation speed of the wire wheel, so as to generate an induced electromagnetic field, thereby forming a braking force to inhibit the rotation of the wire wheel.

2. The electromagnetic braking mechanism according to claim 1, wherein: The magnetic force assembly further includes a mounting assembly. The mounting assembly includes a first bracket. The first bracket is fixed inside the wire wheel. The magnetic ring is located on the upper surface of the first bracket and at the end face of the wire wheel.

3. The electromagnetic braking mechanism according to claim 2, wherein: The mounting assembly further includes a second bracket. The second bracket is located above the magnetic ring, and the coil is located on the second bracket.

4. The electromagnetic braking mechanism according to claim 1, characterized in that: The magnetic force assembly further includes a mounting assembly. The mounting assembly includes a third bracket. The coil is mounted inside the wire wheel through the third bracket. The number of the coils is four. The four coils are arranged around the magnetic ring in a surrounding manner, and the four coils are connected in series and then connected to the brake control circuit.

5. The electromagnetic braking mechanism according to claim 4, wherein: The third bracket includes a hollow mounting cylinder. The four coils are embedded in the mounting cylinder, and the magnetic ring is located in the mounting cylinder. The rotating shaft passes through the magnetic ring.

6. The electromagnetic braking mechanism according to claim 1, characterized in that: The electromagnetic braking mechanism further includes a side cover assembly covering one side of the wire wheel. The rotating shaft of the wire wheel passes through the magnetic ring and is located inside the side cover assembly.

7. The electromagnetic braking mechanism according to claim 1, wherein: The brake control circuit includes a sensor, a controller and two MOS transistors. The sensor is used to detect the rotation speed of the wire wheel. The number of the coils is four. The four coils are connected in series and then connected between the drains of the two MOS transistors. The sources of the two MOS transistors are both grounded. The controller is connected to the sensor and the gates of the two MOS transistors to obtain the wire speed according to the rotation speed of the wire wheel, and control the operation of the MOS transistors according to the rotation speed and the wire speed of the wire wheel, so as to form a closed loop.

8. A water droplet wheel, characterized in that: It includes a fishing reel main body and an electromagnetic braking mechanism connected to the fishing reel main body. The electromagnetic braking mechanism is the electromagnetic braking mechanism according to any one of claims 1-7 above.

9. A fishing tackle, characterized in that: It includes the baitcasting reel according to claim 8 above.

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