An electromagnetic braking mechanism and a fishing reel

Abstract

This invention discloses an electromagnetic braking mechanism, comprising: a fishing reel; a braking assembly located on one side of the reel, including a magnet and at least one coil, wherein the magnet generates magnetic field lines and is sleeved on the rotating shaft of the reel; and a control and adjustment assembly including a sensing circuit and a switching circuit, wherein the coil is connected to the switching circuit, and the sensing circuit is connected to the switching circuit to obtain the line output speed according to the reel's rotation speed. The switching circuit is controlled to operate according to the reel's rotation speed and the line output speed, so that the coil and the switching circuit form a closed loop. The coil generates an induced electromagnetic field, thereby forming a braking force that inhibits the reel's rotation. The operating time of the switching circuit can be controlled according to the reel's rotation speed and the line output speed to automatically adjust the magnitude of the braking force. A fishing reel is also disclosed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fishing tackle, more particularly to an electromagnetic brake mechanism and a fishing reel. BACKGROUND

[0002] The lure is a fishing method operated by the angler through repeated casting and backline, and is becoming more and more popular in outdoor fishing activities as the most environmentally friendly fishing method. The traditional fishing reel used in fishing has the disadvantages of being difficult to master and easy to blow the line, and the user needs to master the casting angle and force through long-term practice and manual control if necessary. In order to solve this problem, the existing solution is to add a centrifugal brake and a magnetic brake to the fishing reel. These two ways are full brake, and as long as the line reel rotates, there will be brake action, which will hinder the line reel to come out faster, and thus cannot be better for long casting. In order to achieve long casting, the brake must be reduced, and the brake force is too small, which will still cause the line to blow. At this time, the user needs to control manually, which reduces the fun of fishing, especially for beginners. SUMMARY

[0003] The technical problem to be solved by the present application is to provide an electromagnetic brake mechanism and a fishing reel that can improve user experience and reduce the entry threshold of lure activities.

[0004] To solve the above technical problems, according to one aspect of the present application, an electromagnetic brake mechanism is provided, comprising:

[0005] a line reel;

[0006] a brake assembly located on one side of the line reel, comprising a magnet and at least one coil, the magnet being used to generate a magnetic induction line, and being sleeved on the rotating shaft of the line reel;

[0007] a control and adjustment assembly comprising a sensing circuit and a switching circuit, the coil being connected to the switching circuit, and the sensing circuit being connected to the switching circuit to obtain the line speed according to the rotating speed of the line reel, and the switching circuit being controlled according to the rotating speed of the line reel and the line speed to make the coil and the switching circuit form a closed loop, the coil generates an induced electromagnetic field, thereby forming a brake force to inhibit the rotation of the line reel, and the working time of the switching circuit can be controlled according to the rotating speed of the line reel and the line speed to automatically adjust the brake force.

[0008] Further technical solutions are as follows: the sensing circuit comprises a Hall sensor and an MCU, the Hall sensor is used to detect the rotating speed of the line reel, and the MCU is connected to the Hall sensor to obtain the line speed according to the rotating speed of the line reel, and controls the switching circuit to work according to the rotating speed of the line reel and the line speed.

[0009] Further, the switch circuit comprises a first switch tube and a second switch tube, the gate of the first switch tube and the second switch tube is connected with the MCU, the coil is connected between the drain of the first switch tube and the second switch tube, and the source of the first switch tube and the second switch tube is grounded.

[0010] Further, the gate of the first switch tube and the second switch tube is connected with the MCU through a resistor.

[0011] Further, the coil is installed in the line wheel through a support, the number of the coil is four, the four coils are arranged around the magnet, and the four coils are connected in series and then connected with the switch circuit.

[0012] Further, the coil is installed outside the line wheel through a support, and the rotating shaft is sequentially arranged in the magnet and the support.

[0013] Further, the number of the coil is four, the four coils are connected in series and then connected with the switch circuit.

[0014] Further, the electromagnetic brake mechanism further comprises a power supply circuit for supplying power to the sensing circuit.

[0015] Further, the power supply circuit comprises a rectifier circuit, a voltage reduction circuit and an energy storage element, the rectifier circuit is connected with the voltage reduction circuit and the energy storage element, and the voltage reduction circuit is connected with the sensing circuit to supply power to the sensing circuit.

[0016] To solve the above technical problems, according to another aspect of the present application, a fishing reel is provided, which comprises a fishing reel body and an electromagnetic brake mechanism connected with the fishing reel body, and the electromagnetic brake mechanism is the above-mentioned electromagnetic brake mechanism.

[0017] Compared with the prior art, the magnet is arranged on the line wheel, and the coil and the control adjusting assembly are arranged, the coil is connected to the switch circuit of the control adjusting assembly, the sensing circuit can obtain the line speed according to the rotating speed of the line wheel, and the rotating speed of the line wheel and the line speed are used to control the working of the switch circuit, so that the coil and the switch circuit form a closed loop, the coil generates an induced electromagnetic field to inhibit the movement of the magnet, thereby inhibiting the rotation of the line wheel, reducing the rotating speed, forming a brake, and the working time of the switch circuit can be controlled according to the rotating speed of the line wheel and the line speed to automatically adjust the brake force, that is, the rotating speed of the line wheel is detected by the sensing circuit, when the rotating speed is detected to change from the rising state to the falling state, the brake force needs to be reduced, the closing time of the coil is controlled through the cooperation of the sensing circuit and the switch circuit, so that the brake force enters the linear decline mode, the rotating speed of the line wheel is reduced more smoothly, the line output time is prolonged, and the purpose of throwing and casting farther is achieved. When affected by the external environment, for example, when affected by the wind, the line speed will suddenly speed up or slow down, the sensing circuit quickly detects the change of the line speed at this time, controls the switch circuit to work to increase the brake force, so that the line speed and the rotating speed of the line wheel are balanced, and the line explosion is avoided. It can be seen that the electromagnetic brake mechanism can automatically adjust the brake force according to the rotating speed of the line wheel and the line speed, balance the rotating speed of the line wheel and the line speed, and does not need manual operation, thereby improving the user experience and lowering the entry threshold of the lure, so that more people can participate in the lure activity. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a three-dimensional structure schematic diagram of the first embodiment of the electromagnetic brake mechanism of the present application.

[0019] Figure 2 is an exploded structure schematic diagram of the first embodiment of the electromagnetic brake mechanism of the present application.

[0020] Figure 3 is a sectional view schematic diagram of the first embodiment of the electromagnetic brake mechanism of the present application.

[0021] Figure 4 is a schematic diagram of the control adjusting assembly in the electromagnetic brake mechanism of the present application.

[0022] Figure 5 is an exploded structure schematic diagram of the second embodiment of the electromagnetic brake mechanism of the present application.

[0023] Figure 6 is a sectional view schematic diagram of the second embodiment of the electromagnetic brake mechanism of the present application.

[0024] Figure 7 is Figure 5 the specific position structure of the coil in the electromagnetic brake mechanism shown.

[0025] Figure 8 is a structure schematic diagram of a specific embodiment of the fishing reel of the present application. DETAILED DESCRIPTION

[0026] In order to make ordinary skilled in the art more clearly understand the purpose, technical scheme and advantages of the present application, the present application is further described below in conjunction with the drawings and examples.

[0027] Referring to Figures 1 to 4 , Figures 1 to 4 A first embodiment of the electromagnetic brake mechanism 1 of the present application is shown. In the embodiment shown in the drawings, the electromagnetic brake mechanism 1 comprises a line reel 10, a brake assembly 20 located on one side of the line reel 10, and a control adjustment assembly; wherein the brake assembly 20 comprises a magnet 21 for generating magnetic induction lines and at least one coil 22, the magnet 21 is sleeved on the rotating shaft 11 of the line reel 10, preferably, in this embodiment, the magnet 21 is tightly fitted on the rotating shaft 11; the control adjustment assembly comprises a sensing circuit and a switching circuit 52, the coil 22 is connected to the switching circuit 52, and the sensing circuit is connected to the switching circuit 52 to obtain the line speed according to the rotating speed of the line reel 10, and the switching circuit 52 is controlled to work according to the rotating speed of the line reel 10 and the line speed, so that the coil 22 and the switching circuit 52 form a closed loop, the coil 22 generates an induced electromagnetic field, thereby forming a brake force to inhibit the rotation of the line reel 10, and the working time of the switching circuit 52 can be controlled according to the rotating speed of the line reel 10 and the line speed to automatically adjust the brake force. Preferably, in this embodiment, the coil 22 is installed in the line reel 10 through a support 23, the number of the coil 22 is four, the four coils 22 are arranged around the magnet 21, and the four coils 22 are connected in series and then connected to the switching circuit 52.

[0028] As can be seen from the above, in the electromagnetic brake mechanism 1 of the present application, the magnet 21 forms a permanent magnetic field, through the cooperation of the sensing circuit, the switching circuit 52, and the coil 22 and the magnet 21, a brake force can be formed and the brake force can be automatically adjusted, that is, the sensing circuit obtains the line speed according to the rotating speed of the line reel 10, and the switching circuit 52 is controlled to work according to the rotating speed of the line reel 10 and the line speed, so that the coil 22 and the switching circuit 52 form a closed loop, the coil 22 generates an induced electromagnetic field, that is, during the rotation of the magnet 21 following the line reel 10, the coil 22 generates an induced current in the magnetic field, thereby generating an induced electromagnetic field, according to Lenz's law, a torque is generated to hinder the movement of the magnet 21, that is, a torque (brake force) opposite to the direction of rotation of the line reel 10 is generated to inhibit the rotation of the line reel 10, and the closing time of the coil 22 in the switching circuit 52 can be controlled according to the rotating speed of the line reel 10 and the line speed to automatically adjust the brake force, balance the rotating speed of the line reel 10 and the line speed, and make the user have a better experience and feel a better fishing pleasure, while reducing the entry threshold of the fishing activity.

[0029] In some embodiments, such as Figure 4 As shown, the sensing circuit includes a Hall sensor U2 and an MCU U1. The Hall sensor U2 is used to detect the rotational speed of the reel 10. The MCU U1 is connected to the Hall sensor U2 to obtain the wire output speed based on the rotational speed of the reel 10, and controls the operation of the switching circuit 52 based on the rotational speed and the wire output speed. Specifically, the switching circuit 52 includes a first switching transistor Q1 and a second switching transistor Q2. The gates of the first switching transistor Q1 and the second switching transistor Q2 are connected to the MCU U1 through a second resistor R2 and a seventh resistor R7, respectively. The four coils 22 are connected in series between the drains of the first switching transistor Q1 and the second switching transistor Q2. The sources of the first switching transistor Q1 and the second switching transistor Q2 are both grounded. In this embodiment, the MCU is an STM32L010. The switching circuit 52 also includes a third resistor R3 and a tenth resistor R10. The third resistor R3 is connected between the gate of the first switching transistor Q1 and ground, and the tenth resistor R10 is connected between the gate of the second switching transistor Q2 and ground. Understandably, the MCU U1 and the switching circuit 52 are arranged on a circuit board 60 located on the bracket 23. The MCU U1 can also be connected to an coded switch S, through which the brake gear is set. The braking force is changed by setting the conduction time of the first switch Q1 and the second switch Q2. Based on the above design, the magnet 21 forms a permanent magnetic field. When braking is required, the MCU U1 controls the first switch Q1 and the second switch Q2 to conduct simultaneously, and the four coils 22 are short-circuited, forming a closed loop. Each coil 22 forms an induced electromagnetic field. Understandably, the polarity of the induced electromagnetic field can be the same as or opposite to the polarity of the permanent magnetic field. According to Lenz's law, the electromagnetic field of the induced current always opposes the change in the magnetic flux that causes the induced current. Therefore, when the permanent magnetic field formed by the magnet 21 is strengthened, the polarity of the induced electromagnetic field generated by the coil 22 is opposite to that of the permanent magnetic field, and when the permanent magnetic field is weakened, the polarity of the induced electromagnetic field generated by the coil 22 is opposite to that of the permanent magnetic field. The magnetic field has the same polarity as the permanent magnetic field and always generates a torque that opposes the movement of magnet 21, thereby hindering the rotation of the reel 10. It can be seen that the continuous high-speed rotation of the reel 10 can generate a continuous braking torque to complete the braking action. Furthermore, the braking force can be adjusted by adjusting the closing time of coil 22, that is, adjusting the conduction time of Q1 and Q2. In other words, the braking force can be adjusted by adjusting the duty cycle of the PWM output from the MCU to Q1 and Q2. When the duty cycle of the PWM increases, the conduction time of Q1 and Q2 becomes longer, and the braking force increases. When the duty cycle of the PWM decreases, the conduction time of Q1 and Q2 becomes shorter, and the braking force decreases.

[0030] In some embodiments, the electromagnetic brake mechanism 1 further comprises a power supply circuit for powering the sensing circuit. Specifically, the power supply circuit can comprise a rectifier circuit, a step-down circuit and an energy storage element, the rectifier circuit being connected to the step-down circuit and the energy storage element, the step-down circuit being connected to the sensing circuit for powering the sensing circuit. Preferably, both ends (P1, P2) of the four coils 22 connected in series are connected to the input end of the rectifier circuit, so that the coils 22 cut the magnetic lines to generate electric energy, which is supplied to the sensing circuit through the power supply circuit and can be stored through the energy storage element. Based on the above design, during the fishing process, when the rod is thrown, the bait drives the fishing line out of the line, the fishing line pulls the line wheel 10 to rotate, and the magnet 21 sleeved on the rotating shaft 11 also rotates. During the rotation, since the coil 22 is in the magnetic field, the coil 22 cuts the magnetic lines to generate an induced current, an induced electromotive force, and a sinusoidal voltage. After rectification and filtering by the rectifier circuit in the power supply circuit, the voltage is reduced by the step-down circuit to power the electromagnetic brake mechanism 1, and the energy storage element can also be charged. The power stored in the energy storage element can be used as an auxiliary power source to assist in powering the sensing circuit.

[0031] In some embodiments, the electromagnetic brake mechanism 1 further comprises a side cover assembly 30 arranged on one side of the line wheel 10, and the rotating shaft 11 of the line wheel 10 passes through the brake assembly 20 and the circuit board 60 and is arranged in the side cover assembly 30. Specifically, the side cover assembly 30 comprises a side cover body 31 and a line wheel seat 32 connected to the side cover body 31, and the rotating shaft 11 of the line wheel 10 passes through the brake assembly 20 and the circuit board 60 and is arranged in the line wheel seat 32.

[0032] Understandably, when the electromagnetic brake mechanism 1 of the present application is in use, the bait drives the fishing line out of the line, pulls the line reel 10 to rotate, and the magnet 21 also rotates. During the rotation, the coil 22 cuts the magnetic lines to generate a sine wave voltage, which is supplied to the sensing circuit through the rectifier circuit and the voltage reduction circuit, and at the same time, the energy storage element is charged. When the line reel 10 reaches a certain speed, the voltage reaches the preset working requirement, the MCUU1 reads the speed of the line reel 10 detected by the Hall sensor U2, and calculates the out-of-line speed of the line reel 10. When the difference between the speed of the line reel 10 and the out-of-line speed of the line reel 10 is greater than the preset threshold value, the brake action is started, that is, the first switch tube Q1 and the second switch tube Q2 are controlled to be turned on, the four coils 22 are short-circuited, a closed loop is formed, each coil 22 generates an induced electromagnetic field, and a torque that inhibits the movement of the magnet 21 is generated, thereby inhibiting the rotation of the line reel 10, balancing the speed of the line reel 10 and the out-of-line speed, and the conduction time of the first switch tube Q1 and the second switch tube Q2 can be controlled according to the speed of the line reel 10 and the out-of-line speed in actual conditions, that is, the time for forming a closed loop is controlled, and the brake force is automatically adjusted. For example, if the speed of the line reel 10 detected by the Hall sensor U2 changes from an upward state to a downward state during the out-of-line process of the line reel 10, the brake force needs to be reduced at this time. Through the cooperation of the sensing circuit and the switching circuit 52, the brake force can enter a linear decline mode, so that the speed of the line reel 10 is reduced more smoothly, the out-of-line speed is accelerated, the speed is reduced, gradually reaches balance, the out-of-line time is prolonged, and the purpose of throwing and casting farther is achieved. When the out-of-line speed begins to decrease and the speed of the line reel 10 decreases slowly and uniformly, if the line reel 10 encounters external environmental influences, such as side wind, headwind or tailwind, the out-of-line speed will suddenly increase or decrease. After the Hall sensor U2 quickly detects the change of the out-of-line speed at this time (sudden increase or decrease), the MCUU1 controls the duty cycle of the PWM input to the switching circuit 52, that is, the conduction time of the first switch tube Q1 and the second switch tube Q2 is increased, thereby increasing the brake force, so that the out-of-line speed and the speed of the line reel 10 reach balance, and the line explosion is avoided. When the bait enters the water, the fishing line stops out-of-line, and the line reel 10 continues to out-of-line due to inertia, which will cause the line explosion. At this time, the MCUU1 controls the first switch tube Q1 and the second switch tube Q2 to perform the maximum brake force, so that the line reel 10 is slowed down until it stops, preventing the line explosion.

[0033] Referring to Figures 5 to 7 , Figures 5 to 7 A second embodiment of the electromagnetic brake mechanism 1 of the present application is shown. The difference between this embodiment and the first embodiment is that the positions of the magnet 21 and the coil 22 in the brake assembly 20 are different, and the rest of the structure is similar or the same. In this embodiment, the four coils 22 are installed outside the line reel 10 through the bracket 23, the rotating shaft 11 is located in the side cover assembly 30 by sequentially penetrating the magnet 21 and the bracket 23, and specifically, Figure 5 and Figure 6As shown, the magnet 21 can be sleeved on the rotating shaft 11 through a support 40, the coils 22 are located at one side of the magnet 21, and the four coils 22 are connected in series through wires and connected between the drains of the first switch tube Q1 and the second switch tube Q2, so that when the MCUU1 arranged on the circuit board 60 controls the first switch tube Q1 and the second switch tube Q2 to work, a closed loop is formed with the switch circuit 52, each coil 22 generates an induced electromagnetic field, so as to generate a brake force to inhibit the rotation of the magnet 21 and the wire reel 10, and according to the matching of the sensing circuit and the switch circuit 52, the purpose of automatically adjusting the brake force can also be achieved.

[0034] Referring to Figure 8 , Figure 8 is a specific embodiment of the fishing reel 100. In the embodiment shown in the drawings, the fishing reel 100 comprises a fishing reel body 2 and the electromagnetic brake mechanism 1 described in the first embodiment or the second embodiment, the electromagnetic brake mechanism 1 can be assembled in the fishing reel body 2, and the side cover assembly 30 is connected with the fishing reel body 2. The structure of the fishing reel body 2 is a structure known to those skilled in the art, and will not be described here.

[0035] The above is only the preferred embodiment of the present application, not any form of restriction on the present application. Those skilled in the art can make various equivalent changes and improvements on the basis of the above-mentioned embodiments, and any equivalent changes or modifications made within the scope of the claims shall fall within the protection scope of the present application.

Claims

1. An electromagnetic brake mechanism, characterized by comprising: The electromagnetic brake mechanism comprises: a wire wheel; a brake assembly located on one side of the wire wheel, comprising a magnet for generating magnetic induction lines and at least one coil sleeved on a rotating shaft of the wire wheel; a control and adjustment assembly comprising a sensing circuit and a switching circuit, the coil being connected to the switching circuit, the sensing circuit being connected to the switching circuit and comprising a Hall sensor for detecting the rotating speed of the wire wheel and an MCU connected to the Hall sensor to obtain the wire speed according to the rotating speed of the wire wheel and control the switching circuit to work according to the rotating speed of the wire wheel and the wire speed so that the coil and the switching circuit form a closed loop, the coil generates an induced electromagnetic field to form a brake force to inhibit the rotation of the wire wheel, to dynamically balance the rotating speed of the wire wheel and the wire speed, and to control the working time of the switching circuit according to the rotating speed of the wire wheel and the wire speed to automatically adjust the brake force; and the electromagnetic brake mechanism further comprises a power supply circuit for supplying power to the sensing circuit.

2. The electromagnetic brake mechanism of claim 1, wherein: The switching circuit comprises first and second switching tubes, the gates of the first and second switching tubes being connected to the MCU, and the coil being connected between the drains of the first and second switching tubes, the sources of the first and second switching tubes being grounded.

3. The electromagnetic brake mechanism of claim 2, wherein: The gates of the first and second switching tubes are connected to the MCU through a resistor.

4. The electromagnetic brake mechanism of claim 1, wherein: The coil is installed in the wire wheel through a bracket, the number of the coils is four, the four coils are arranged around the magnet, and the four coils are connected in series and then connected to the switching circuit.

5. The electromagnetic brake mechanism of claim 1, wherein: The coil is installed outside the wire wheel through a bracket, and the rotating shaft passes through the magnet and the bracket in sequence.

6. The electromagnetic brake mechanism of claim 5, wherein: The number of the coils is four, the four coils are connected in series and then connected to the switching circuit.

7. The electromagnetic brake mechanism of claim 1, wherein: The power supply circuit comprises a rectifier circuit, a voltage reduction circuit and an energy storage element, the rectifier circuit being connected to the voltage reduction circuit and the energy storage element, and the voltage reduction circuit being connected to the sensing circuit to supply power to the sensing circuit.

8. A fishing reel characterized by: The electromagnetic brake mechanism comprises: a wire wheel; a brake assembly located on one side of the wire wheel, comprising a magnet for generating magnetic induction lines and at least one coil sleeved on a rotating shaft of the wire wheel; a control and adjustment assembly comprising a sensing circuit and a switching circuit, the coil being connected to the switching circuit, the sensing circuit being connected to the switching circuit and comprising a Hall sensor for detecting the rotating speed of the wire wheel and an MCU connected to the Hall sensor to obtain the wire speed according to the rotating speed of the wire wheel and control the switching circuit to work according to the rotating speed of the wire wheel and the wire speed so that the coil and the switching circuit form a closed loop, the coil generates an induced electromagnetic field to form a brake force to inhibit the rotation of the wire wheel, to dynamically balance the rotating speed of the wire wheel and the wire speed, and to control the working time of the switching circuit according to the rotating speed of the wire wheel and the wire speed to automatically adjust the brake force; and the electromagnetic brake mechanism further comprises a power supply circuit for supplying power to the sensing circuit. The switching circuit comprises first and second switching tubes, the gates of the first and second switching tubes being connected to the MCU, and the coil being connected between the drains of the first and second switching tubes, the sources of the first and second switching tubes being grounded. The gates of the first and second switching tubes are connected to the MCU through a resistor. The coil is installed in the wire wheel through a bracket, the number of the coils is four, the four coils are arranged around the magnet, and the four coils are connected in series and then connected to the switching circuit. The coil is installed outside the wire wheel through a bracket, and the rotating shaft passes through the magnet and the bracket in sequence. The number of the coils is four, the four coils are connected in series and then connected to the switching circuit. The power supply circuit comprises a rectifier circuit, a voltage reduction circuit and an energy storage element, the rectifier circuit being connected to the voltage reduction circuit and the energy storage element, and the voltage reduction circuit being connected to the sensing circuit to supply power to the sensing circuit. The electromagnetic brake mechanism comprises: a wire wheel; a brake assembly located on one side of the wire wheel, comprising a magnet for generating magnetic induction lines and at least one coil sleeved on a rotating shaft of the wire wheel; a control and adjustment assembly comprising a sensing circuit and a switching circuit, the coil being connected to the switching circuit, the sensing circuit being connected to the switching circuit and comprising a Hall sensor for detecting the rotating speed of the wire wheel and an MCU connected to the Hall sensor to obtain the wire speed according to the rotating speed of the wire wheel and control the switching circuit to work according to the rotating speed of the wire wheel and the wire speed so that the coil and the switching circuit form a closed loop, the coil generates an induced electromagnetic field to form a brake force to inhibit the rotation of the wire wheel, to dynamically balance the rotating speed of the wire wheel and the wire speed, and to control the working time of the switching circuit according to the rotating speed of the wire wheel and the wire speed to automatically adjust the brake force; and the electromagnetic brake mechanism further comprises a power supply circuit for supplying power to the sensing circuit.

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