Brake force control device and fishing reel having the same

Abstract

The present application provides a braking force control device and a fishing reel having the same, which can prevent backlash and increase a flight distance without monitoring acceleration. A braking force control device of one embodiment of the present application has a spool whose shaft is supported by a reel body and which can wind a fishing line, a rotational speed detection section that detects a rotational speed of the spool, a braking section that generates a braking force against the spool, and a braking force control section that controls the braking force of the braking section, characterized in that the braking force control section is configured to adjust the braking force in accordance with an elapsed time from a cast start or detection information of the rotational speed detection section.

Description

TECHNICAL FIELD

[0001] The present application relates to a brake force control device, and particularly to a brake force control device for a dual bearing reel in which a spool is rotatably attached to a reel body, and a fishing reel having the same. BACKGROUND

[0002] In a dual bearing reel, particularly in a bait casting reel in which a lure or the like is attached to the front end of a fishing line and cast, a brake device is provided to brake the spool in order to prevent backlash at the time of casting. In such a brake device, an electric control type brake device is known in which a generator mechanism is provided between the spool and the reel body, and the brake force during casting is adjusted by electric control.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2004-208630

[0004] In the brake device of Patent Document 1, the angular acceleration is always monitored while considering that the tension is proportional to the angular acceleration, and the short circuit or the open of the brake device is switched, whereby feedback control is performed to make the angular acceleration within a target range.

[0005] In this method, the angular acceleration of the spool needs to be detected. In order to detect the angular acceleration of the spool, for example, there are a method in which an incremental encoder is constituted by two photoelectric sensors or the like, and the angular acceleration is obtained by twice differentiating the angle with respect to time after the angle of the spool is obtained, and a method in which a magnet is provided to the spool and a coil is provided to the reel body, and the angular velocity is obtained by detecting the counter electromotive force proportional to the rotation of the spool, and the angular acceleration is obtained by differentiating the angular velocity with respect to time.

[0006] However, in the former method, when the angle is differentiated twice, there is a problem that the control is easily affected by noise and it is difficult to perform control at a required precision. In addition, in the latter method, the magnet needs to be provided to the spool, and there is a problem that there is a limit to reducing the inertia of the spool.

[0007] In addition, since a feedback loop in which the angular acceleration is always monitored is originally constituted, there is a problem that the control is easily affected by oscillation depending on the condition, and the calculation load of the microcomputer becomes high. SUMMARY

[0008] The present application was achieved in view of the above-described circumstances, and an object thereof is to provide a brake force control device in which backlash prevention and flight distance improvement can be both achieved without monitoring acceleration, and a fishing reel having the same. The objects other than those of the present application will become apparent from the entire contents of the present specification.

[0009] The brake force control device of one embodiment of the present application includes a spool whose shaft is supported by a reel body and which can wind a fishing line, a rotation speed detection unit that detects a rotation speed of the spool, a brake unit that generates a brake force for the spool, and a brake force control unit that controls the brake force of the brake unit, and is characterized in that the brake force control unit is configured to adjust the brake force in accordance with an elapsed time from the start of casting or detection information of the rotation speed detection unit.

[0010] In the brake force control device of one embodiment of the present application, the brake force control unit is configured to control the brake force in accordance with a brake setting value defined by time during a first time of casting and to control the brake force in accordance with a brake setting value defined on the basis of the rotation speed of the spool during a second time of casting.

[0011] In the brake force control device of one embodiment of the present application, the brake setting value during the first time of casting and the brake setting value during the second time of casting are configured to be individually set or changed.

[0012] In the brake force control device of one embodiment of the present application, the brake unit is configured to generate a brake force that increases in proportion to an angular velocity of the spool, and the brake force control unit is configured to control the brake force in such a manner that the proportional coefficient can be changed.

[0013] In the brake force control device of one embodiment of the present application, the brake unit includes an electrically conductive member provided to the spool, a magnetic force generation unit provided to the reel body, and a magnetic field adjustment unit that changes a magnetic field state of the magnetic force generation unit.

[0014] In the brake force control device of one embodiment of the present application, the electrically conductive member is an induction rotor, the magnetic force generation unit is a permanent magnet, and the magnetic field adjustment unit is an electric motor and a speed reducer.

[0015] In the brake force control device of one embodiment of the present application, the brake force control unit is configured to control the brake force in such a manner that the strength of a magnetic field acting on the electrically conductive member is proportional to the rotation speed of the spool.

[0016] In the brake force control device of one embodiment of the present application, the brake unit includes a brake plate provided to the spool and a magnetic viscous fluid in contact with the brake plate, and the brake force control unit includes a magnetic field adjustment unit that adjusts a magnetic field acting on the magnetic viscous fluid.

[0017] The fishing reel of one embodiment of the present application is configured to include any of the above-described brake force control devices.

[0018] According to the above-described embodiment, a braking force control device capable of preventing backlash and increasing flight distance without monitoring acceleration and a fishing reel having the same can be provided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a view showing an example of a sequence of casting and retrieving a fishing tool such as a lure using a fishing reel.

[0020] Figure 2 is a view showing a change in the rotation speed of a spool when a fishing tool such as a lure is cast and retrieved using a fishing reel.

[0021] Figure 3 is a view illustrating the structure of a fishing reel having a braking force control device of one embodiment of the present application.

[0022] Figure 4 is a view illustrating the structure of a fishing reel having a braking force control device of one embodiment of the present application.

[0023] Figure 5 is a view illustrating the structure of a fishing reel having a braking force control device of one embodiment of the present application.

[0024] Figure 6 is a view illustrating the relationship between the rotation speed of a spool and the braking torque of a braking force control device of one embodiment of the present application.

[0025] Figure 7 is a view illustrating the relationship between elapsed time and a brake setting value of a braking force control device of one embodiment of the present application.

[0026] Figure 8 is a view illustrating a flowchart of a control method of a braking force control device of one embodiment of the present application.

[0027] Figure 9 is a view illustrating the relationship between elapsed time and the rotation speed of a spool and the like of a braking force control device of one embodiment of the present application.

[0028] Figure 10 is a view illustrating the relationship between the change in the rotation speed of a spool and a brake setting value of a braking force control device of one embodiment of the present application.

[0029] REFERENCE NUMERALS

[0030] 1: fishing reel; 2: frame; 3: spool; 4: braked member (sensing rotor); 5: fixed magnet; 6: rotating magnet; 7: lure; 10: fishing rod; 11: bearing; 12: reflection plate; 13: mounting plate; 14: locking member; 15: middle cover; 16: motor; 18: battery; 19: base plate; 20: braking force generating portion (braking force generating unit); 21: outer cover; 22: rotating magnet holder; 23: reduction gear; 24: position sensor; 25: motor driver; 26: spool rotation sensor; 30: braking force control portion; 31: casting preparation detection portion (casting preparation detection unit). DETAILED DESCRIPTION

[0031] Hereinafter, an embodiment of a braking force control device of the present application and a fishing reel having the same will be described with reference to the accompanying drawings. In the drawings, like components are designated by like reference numerals, and repeated description thereof will be omitted. It should be noted that the drawings are not necessarily to scale for the sake of convenience of explanation.

[0032] First, with reference to Figure 1 , Figure 2 An example of a sequence of casting a lure or the like and reeling in using a general fishing reel 1 including the present fishing reel will be described. First, as shown in (a) of Figure 1 , the lure 7 is adjusted to a prescribed length from the tip of the fishing rod 10, the clutch is disengaged, and the spool is brought to a free state. At this time, the thumb is pressed against the spool 3 of the fishing reel 1 so that the fishing line does not come out due to the weight of the lure or the like.

[0033] Next, as shown in (b) to (d) of Figure 1 , the lure 7 is given an initial speed by shaking the fishing rod 10. Further, as shown in (e) of Figure 1 , at a timing at which the speed of the lure 7 and the direction of the cast become appropriate, the thumb is removed from the spool 3, and the lure 7 can be cast.

[0034] Further, after the cast, Figure 1 , the lure 7 starts to decelerate due to the tension from the fishing line and air resistance. On the other hand, the spool 3 starts to rotate due to the tension from the fishing line. When the speed of the fishing line and the flight speed of the lure 7 coincide, the spool 3 reaches the highest rotational speed, and the fishing line loses tension. The lure 7 also continues to lose speed due to air resistance or the like. At this time, if the spool 3 continues to rotate at high speed due to inertia, the speed of the fishing line exceeds the flight speed of the lure 7. As a result, the fishing line is excessively cast, and line winding occurs in the fishing reel 1. In order to avoid this, a braking device can be used to apply a prescribed braking force to the spool 3.

[0035] Figure 2The time change of the spool speed is shown. The horizontal axis indicates the elapsed time from the start of the spool rotation, and the vertical axis indicates the rotational speed of the spool. As shown in Figure 2 the spool 3 sharply increases in speed in conjunction with the start of casting, reaching the maximum speed. The maximum speed of the rotational speed is about 6000 rpm to 40000 rpm depending on the kind of the lure 7 to be cast, the distance to be targeted, the difference in the diameter of the line wound around the spool, and the like, and the time until the maximum speed is reached is about 70 ms to 150 ms. In one embodiment of the present application, this region is referred to as an acceleration region.

[0036] After that, when the line length is sufficiently paid out, the lure 7 is no longer affected by the action of the fishing rod 10, and the influence of the air resistance becomes dominant, and the lure speed gradually decreases. In one embodiment of the present application, this region is referred to as a cruising region. The boundary between the acceleration region and the cruising region is mostly after the elapse of about 100 ms to 400 ms from the start of the spool rotation. Then, if the height of the lure 7 sufficiently decreases, the lure hits the water, and the lure speed sharply decreases. In one embodiment of the present application, this region is referred to as a water landing region.

[0037] In each region, if the braking force of the braking device is too large, the distance at which the lure 7 can be cast becomes short. On the other hand, if the braking force of the braking device is too small, the line is entangled, and it is difficult to normally perform winding and paying out. The appropriate value of the braking force can vary depending on the mass of the lure 7, the air resistance, and the like. Furthermore, the appropriate value of the braking force can vary depending on the length of the fishing rod 10, the casting method, or the natural environment such as the wind, and the like.

[0038] Next, the structure of the fishing reel 1 to which the braking force control device 100 of one embodiment of the present application is attached will be described with reference to Figures 3 to 5 to FIG. 1. Figure 3 is a system diagram showing the structure of the braking force control device 100 of one embodiment of the present application. Figure 4 is an exploded perspective view showing the structure of the braking force control device 100 of one embodiment of the present application. Figure 5 is a sectional view of the braking force control device 100 of one embodiment of the present application after assembly.

[0039] The fishing reel 1 of one embodiment of the present application is composed of a frame 2 constituting a reel main body, a spool 3, a braking member (sensing rotor) 4, a bearing 11, a reflecting plate 12, a fixed magnet 5, a rotating magnet 6, a mounting plate 13, a locking member 14, a middle cover 15, a motor 16, a reduction gear 17, a battery 18, a substrate 19, and an outer cover 21. Note that, for simplicity of description, a part of the functions of the reel main body that are known are omitted.

[0040] The spool 3 is generally cylindrical, and when rotated clockwise, it can wind the fishing line around its outer circumference. One of the pair of bearings 11 that support the rotation of the spool 3 is fixed to the frame (spool body) 2, and the other is fixed to the mounting plate 13.

[0041] Here, the frame (reel body) 2 can be mounted on the fishing rod. The fishing reel 1, like conventional fishing reels, has an operating unit (handle) not shown. By rotating the drum 3 clockwise through user operation, the fishing line can be wound. The rotation of the handle (not shown) is transmitted to the drum 3 via a transmission unit such as gears. The fishing reel 1 has a clutch unit (not shown), which allows the user to select whether to connect or disconnect the power transmission to the drum 3. In the connected state, winding can be performed using the operating unit. In the released state, the drum 3 can be freely rotated in both directions, thereby releasing the fishing line.

[0042] Additionally, the fishing reel 1 may also have a dragging mechanism to prevent the fishing line from breaking by allowing the drum 3 to spin freely when a torque exceeding a specified value is applied, and a reversal prevention mechanism to prevent the handle from reversing. Furthermore, an oscillation device may be provided, which reciprocates the position of the guide portion that guides the fishing line according to the rotation of the drum 3, thereby evenly winding the fishing line.

[0043] Mounting plate 13 can be fixed to frame 2. In one embodiment of the present invention, a latch structure is used in which multiple claws provided on the locking member are rotated and locked into the retaining part provided on frame 2, thereby enabling the roll 3 and mounting plate 13 to be loaded and unloaded from frame 2. However, it can also be fixed by means of screw fixing, adhesive bonding, etc.

[0044] By fixing the mounting plate 13 to the frame 2, the drum 3 is rotatably supported by a shaft. Furthermore, by holding the fixed magnet 5 and the rotating magnet 6 to the mounting plate 13, the braking force generating unit (braking force generating unit) 20, described later, is formed. Additionally, by integrating the mounting plate 13, the middle cover 15, and the outer cover 21 as a single unit, a side plate unit can be constructed. The middle cover 15 and the outer cover 21 form a watertight chamber, which houses electrical components such as the base plate 19, battery 18, motor 16, and sensors.

[0045] Next, mainly refer to Figure 3 The principle of braking force generation and the method of braking force adjustment are explained. It should be noted that in one embodiment of the invention, the braking torque is applied to the drum via eddy currents, but various other methods are also possible. A ring-shaped rotating braking part (induction rotor) 4, made of a non-magnetic conductor such as aluminum or copper, is mounted on the drum 3. A cylindrical rotating magnet 6 is disposed on the outer periphery of the induction rotor 4, and a cylindrical fixed magnet 5 is disposed on the inner periphery.

[0046] The outer periphery of the fixed magnet 5 is divided into N equal parts, and is alternately magnetized with N and S poles. Also, the inner periphery of the rotating magnet 6 is divided into N equal parts, and is alternately magnetized with N and S poles. The magnetic field generated by the fixed magnet 5 and the rotating magnet 6 penetrates the induction rotor 4 (also referred to as a "eddy current generation plate") located therebetween. Therefore, when the drum rotates, an eddy current is generated in the induction rotor 4, and a braking torque corresponding to the rotation speed acts. The magnitude of the braking torque is proportional to the strength of the magnetic field and the rotation speed.

[0047] Thus, a braking force generation portion (braking force generation unit) 20 of one embodiment of the present application is implemented. Note that a mechanism in which the induction rotor 4 is able to move in the axial direction by the balance between centrifugal force and spring force, so that the facing area of the magnet and the induction rotor is changed, and the relationship between the rotation speed and the braking force is adjusted, can also be used.

[0048] The rotating magnet 6 is fixed to a rotating magnet holder 22 and is supported so as to be able to rotate with respect to the mounting plate 13. The rotating magnet holder 22 has a gear portion, and receives transmission of force from the motor via a reduction gear 17. A position sensor 24 is able to transmit a voltage signal corresponding to the position of the rotating magnet 6 to a control portion. In one embodiment of the present application, this structure is implemented by detecting the angular position of a part of a gear that constitutes the gear portion with a knob, but other means known to detect the angle of the rotating magnet 6 with a magnetic sensor or the like can also be used.

[0049] In addition, a clutch state detection portion (clutch state detection unit) 31 that detects the state of the clutch unit is provided, and when the clutch is switched from the connected state to the disconnected state, it is considered that the cast preparation is performed. The motor driver 25 supplies a prescribed electric power to the motor 16, and rotates the motor 16. The braking force control portion (braking force control unit) 30 feeds back controls the rotating magnet 6 to a prescribed position by the motor 16 being rotated in the forward and reverse directions by the motor driver 25, on the basis of a signal from the position sensor 24. In this way, the magnetic field acting on the braked member 4 can be set to a prescribed magnitude.

[0050] The magnetic field acting on the braked member 4 is the smallest when the rotating magnet 6 and the fixed magnet 5 are in the same-pole opposing state, and is the largest when they are in the different-pole opposing state. When the rotating magnet 6 is rotated from the same-pole opposing state to the different-pole opposing state, the magnetic field acting on the braked member 4 increases approximately in proportion to the amount of angular movement.

[0051] Hereinafter, the same-pole opposing state is defined as a brake setting value 1, and the different-pole opposing state is defined as a brake setting value 20. Therefore, the braking torque acting on the drum 3 increases approximately in proportion to the brake setting value. Figure 6The relationship between the braking torque acting on the spool 3 and the speed of the spool 3, the brake setting value is shown. As shown, it is known that the braking torque increases in proportion to the rotational speed of the spool and the brake setting value. The brake force control section 30 can impart a desired braking force to the spool 3 by moving the rotating magnet to a prescribed position using the motor 16.

[0052] Next, the rotational speed detection unit (in the example shown, the spool rotation sensor 26) that detects the rotational speed of the spool 3 will be described. In one embodiment of the present application, a well-known incremental rotary encoder that outputs a prescribed number of pulse signals each time the spool rotates one revolution is used to detect the rotational speed. That is, the reflecting plate 12 mounted to the spool is divided into N equal parts, and the surface is alternately divided and painted light and dark, changing the reflectivity. The light part is painted with a metal surface, white paint. The dark part is painted black or the like, which is a surface treatment with low reflectivity. Figure 3

[0053] By disposing two reflective optical sensors at positions opposite the reflecting plate 12, the light and dark of the surface opposite each optical sensor can be detected. Thus, the rotation of the spool 3 can be detected. In one embodiment of the present application, the light and dark of the reflecting plate 12 are spaced 180° apart, and the two optical sensors are disposed 90° apart. Thus, the spool 3 outputs a signal of four pulses each time it rotates one revolution.

[0054] As an incremental rotary encoder, in addition to using a reflective optical sensor as described above, the same effect can be achieved using a transmissive optical sensor or a magnetic sensor. The amount of rotation of the spool can be calculated based on the number of pulses of the rotary encoder. In addition, by calculating the change in the number of pulses per unit time, the rotational speed of the spool can be detected. Furthermore, as the rotational speed detection unit, it is not limited to this method, and other units known in the art can be used. In addition, as described above, by using a non-contact rotational speed detection unit that does not come into contact with the spool, it is possible to avoid causing the spool to generate unnecessary frictional resistance.

[0055] The brake force control device of one embodiment of the present application has a spool whose shaft is supported by a spool body and which can wind a fishing line, a rotational speed detection section that detects the rotational speed of the spool, a brake section that generates a braking force to the spool, and a brake force control section that controls the braking force of the brake section, characterized in that the brake force control section is configured to adjust the braking force in accordance with the elapsed time from the start of casting or the detection information of the rotational speed detection section.

[0056] ​The brake force control device according to one embodiment of the present application can provide a brake force control device that can take into account both prevention of backlash and increase in flying distance without monitoring acceleration. In particular, in the brake force control device according to one embodiment of the present application, since acceleration and tension are not calculated, the noise tolerance at the time of speed detection is high, and since the brake setting value is determined based on the brake speed by feedforward control, the brake force can be controlled without oscillation and with reduced calculation load.

[0057] In the brake force control device according to one embodiment of the present application, the brake force control section is configured to control the brake force according to the brake setting value defined by time during a first time of casting, and to control the brake force according to the brake setting value defined based on the rotational speed of the spool during a second time of casting. Thus, appropriate brake force can be applied without calculating acceleration separately during the first time when the acceleration changes greatly, and during the second time when the speed gradually decreases.

[0058] In the brake force control device according to one embodiment of the present application, the brake setting value during the first time of casting and the brake setting value during the second time of casting can be individually set or changed. Thus, the brake force can be set separately during the first time when the optimal value of the brake torque is influenced by the main cause of the large individual differences in casting style, and during the second time when the optimal value of the brake torque is influenced by the main cause of the small individual differences in air resistance. Thus, the brake force can be easily optimized.

[0059] In the brake force control device according to one embodiment of the present application, the brake section generates brake force that increases in proportion to the angular velocity of the spool, and the brake force control section controls the brake force in a manner that can change the proportional coefficient. Here, "in proportion to" includes not only the case where the proportion is mathematically correct, but also the case where the proportion can be considered to be correct (approximately correct). In addition, approximately correct means that, when the angular velocity of the spool is set as ω and the brake setting value is set as B, the relationship between B and ω is set as B = kω n and approximated using the least squares method or the like, the value of n is in the vicinity of 1, for example, in the range of 0.5 to 1.5. In this way, the speed change of the cast object such as a lure can be made to approximately coincide with the speed change of the spool, and thus the optimization of the brake force based on feedforward control can be achieved.

[0060] In the brake force control device according to one embodiment of the present application, the brake section includes an electrically conductive member provided to the spool, a magnetic force generating section provided to the spool, and a magnetic field adjusting section that changes the magnetic field state of the magnetic force generating section.

[0061] In the braking force control device of one embodiment of the present application, the electrically conductive member is an induction rotor, the magnetic force generating portion is a permanent magnet, and the magnetic field adjusting portion is an electric motor and a speed reducer.

[0062] In the braking force control device of one embodiment of the present application, the braking force control portion controls the strength of the magnetic field acting on the electrically conductive member in a manner proportional to the rotational speed of the spool.

[0063] In the braking force control device of one embodiment of the present application, the braking portion includes a braking plate provided on the spool and a magnetic viscous fluid in contact with the braking plate, and the braking force control portion includes a magnetic field adjusting portion that adjusts the magnetic field acting on the magnetic viscous fluid.

[0064] The fishing reel of one embodiment of the present application includes any of the above-described braking force control devices. Thus, the fishing reel of one embodiment of the present application can provide a fishing reel including a braking force control device that can prevent backlash and increase the flight distance without monitoring acceleration. In particular, in the braking force control device of one embodiment of the present application, since acceleration and tension are not calculated, the device has high tolerance to noise generated at the time of speed detection, and since the device is a feedforward control that determines the brake setting value in accordance with the brake speed, the device can be free from oscillation and has low calculation load.

[0065] Generally, feedback control has advantages of high tolerance to disturbance and easy optimal setting as compared with feedforward control. The conventional braking force control device using feedback control uses angular acceleration as the monitoring target as described above. However, the accuracy and response speed of the angular acceleration have a limit, and in particular, since the weight of the decoy and the like is several g, the angular acceleration needs to have accuracy corresponding to several g. Thus, in feedback control using angular acceleration as the monitoring target, if the accuracy and response of the angular acceleration are insufficient, the braking force cannot be optimally set, the device is affected by oscillation, and the calculation load is increased. In one embodiment of the present application, the characteristics of the braking device can be determined on the basis of the braking force required at the time of casting as described above. Thus, feedback is not used, and the device can avoid the effects of oscillation and reduce the calculation load.

[0066] Next, the control method of the braking force control device of one embodiment of the present application will be described in detail. Figures 7 to 9 Next, the control method of the braking force control device of one embodiment of the present application will be described in detail. Figure 7 The values in the drawing are examples of the brake setting value, which is the user-set braking force. The values on the left side in the drawing are the brake setting values in the acceleration region, and the values on the right side are the brake setting values in the cruising region.

[0067] In one embodiment of the present application, in the acceleration region, the brake setting value is determined in accordance with the elapsed time from the start of the cast. PI indicates the brake setting value Bl set at the start of the cast, and P2 indicates the brake setting value B2 changed after the elapse of tl. In the cruising region, the brake setting value is determined in accordance with the rotation speed of the spool. P3 indicates the brake setting value B3 set at the time when the rotation speed of the spool is the highest, and P4 indicates the brake setting value B4 set at the time when the rotation speed of the spool is X% or less of the highest. In the present embodiment, the brake setting value between P3 and P4 (between X% and 100% of the highest rotation speed of the spool) is set to change linearly between the brake setting values B3 and B4.

[0068] Next, Figure 8 is a flowchart for explaining the control method of the brake force control device of one embodiment of the present application. The brake force control device 100 of one embodiment of the present application changes the brake setting value to the initial state if the cast preparation is detected (step Fl). In one embodiment of the present application, the clutch state detection section (clutch state detection unit) 31 that detects the state of the clutch unit is provided, and the cast preparation is considered to be performed when the clutch is switched from the connected state to the disconnected state.

[0069] As another method of detecting the cast preparation, the cast preparation can be detected based on the case where the rotation in the pay-out direction of the fishing line is started from the state where the spool is stopped, the case where the fishing rod becomes a prescribed posture in a particular direction, or the case where the angular velocity in a prescribed direction of the reel 1 becomes equal to or greater than a set threshold value, or the like. The initial state of the brake setting value uses the setting value Bl of point 1 in Figure 7 .

[0070] If the rotation speed of the spool obtained by the spool rotation sensor 26 is detected to exceed a prescribed value, the cast is considered to have started (step F3). At this time, the timer is initialized to 0 (step F4). In the case where the elapsed time t from the start of the cast is less than a prescribed value Tl (step F5), the cast is considered to be in the acceleration region. In this region, the brake setting value is changed in accordance with the time regardless of the rotation speed of the spool (step F6). The brake setting value at this time can be determined by a function represented by the curve PI-P2-P3 on the acceleration region of Figure 7 .

[0071] If the elapsed time t from the start of the throw (casting) becomes a predetermined value T1 or more, the control device is considered to have switched to cruise mode. The predetermined value T1 is, for example, in the range of 200 to 500 ms. In this state, the brake setting is changed according to the speed change. In this region, the drum's rotational speed is obtained each time the timer elapses a predetermined time Δt (step F7) (step F8). Correspondingly, the control circuit is based on the... Figure 7 The function settings shown by curves P3-P4 on the cruise area determine the brake setting value that becomes the target, and the drive motor moves the rotating magnet to the specified position (step F9). If the drum rotation speed is below the specified value (within... Figure 8 In the example shown, if the speed is 0 (step F10), the throw is considered to be over, and the game will wait until the next throw (toss) begins (step F11).

[0072] Figure 9 This is an example of the casting results. The horizontal axis represents the elapsed time since the casting began. The vertical axes represent the changes in drum rotation speed, brake setting, and braking torque acting on the drum, respectively. As shown in the central diagram, in the acceleration zone, the brake setting changes according to the elapsed time. Similarly, in the cruise zone, the brake setting decreases as the drum rotation speed decreases. As a result, in the lower part, as shown in the diagram, the braking torque decreases in the latter half of the casting, effectively increasing the flight distance. In the latter half of this cruise zone, in the upper part, as shown in the diagram, the drum rotation speed and decoy speed also decrease, and the diameter of the line wound on the drum also decreases, so even with reduced braking torque, there is little recoil.

[0073] As described above, the braking torque during the acceleration phase and the braking torque during the gradual decrease in drum speed can be set independently. This allows for both preventing line backlash and increasing the casting distance of the bait.

[0074] During the initial acceleration of the reel immediately after casting, the line constantly pulls on the reel, preventing line shavings and recoil, thus eliminating the need for braking. Recoil is most likely to occur immediately after the reel reaches maximum speed and begins to decelerate. To prevent this, appropriate braking needs to be applied at this moment. The optimal braking torque varies depending on the characteristics of the fishing rod (length, stiffness, density, etc.), the rod swing, the length of the bait before casting, the bait weight, and the bait trajectory. Therefore, individual variations are significant. In one embodiment of the invention, the brake setting can be time-defined within this region. This allows for easy reduction of braking force during periods when no braking is needed and maximized braking force during periods when braking is required.

[0075] In the cruising, the lure gradually decelerates. The reason for the deceleration is mainly the air resistance acting on the lure and the fishing line. In most cases, the air resistance in the cast becomes a turbulent flow region, proportional to the square of the lure speed and the frontal projected area. In addition, the proportional coefficient largely depends on the shape of the lure. In the case where the tension of the fishing line is small enough, the air resistance is the weight of the lure multiplied by the deceleration of the lure, so the deceleration (change in speed) of the lure is proportional to the square of the lure speed. By decelerating the rotation speed of the reel to the same degree (slightly more) as the change in speed of the lure, it is possible to continue the state where the fishing line is always pulling the reel. That is, it is possible to prevent the generation of line chips and the generation of backlash.

[0076] Therefore, in the process where the lure speed gradually decreases, it is possible to apply a brake corresponding to the shape of the lure and the weight of the lure to the reel. The optimal value of the brake force at this time is not so dependent on the characteristics of the rod used, the swinging method of the rod, so the individual differences and the differences caused by the rod are small. In one embodiment of the present application, it is possible to define the brake setting value based on the rotation speed of the reel in this region. Thereby, it is easy to make the change in speed of the lure substantially coincide with the change in speed of the reel, and it is possible to easily optimize the brake.

[0077] The brake force control device 100 according to one embodiment of the present application can independently set the brake torque at the initial stage of the cast and the brake torque in the cruising. Thereby, it is possible to optimize the brake conditions in each condition, and it is possible to take into account both the prevention of backlash of the fishing line and the improvement of the casting distance of the lure. For example, in the case where the lure is changed, only the setting of the acceleration region is changed, in the case where the weather conditions such as the wind direction are changed, only the setting of the cruising region is changed, and the like, it is possible to make the setting change corresponding to the situation.

[0078] In addition, in one embodiment of the present application, as shown in Figure 7 , the brake setting value is decreased in proportion to the rotation speed of the reel. As shown in Figure 6 , the reel brake torque is in a substantially proportional relationship with the brake setting value and the rotation speed of the reel. In addition, in the present embodiment, as shown in Figure 7 , the brake setting value is increased in proportion to the rotation speed of the reel. Therefore, in one embodiment of the present application, the reel brake torque is substantially increased in proportion to the square of the rotation speed of the reel. In the case where the air resistance of the lure is increased in proportion to the square of the lure speed as described above, by setting like this, it is possible to synchronize the deceleration of the reel with the deceleration of the lure, and it is easy to optimize the brake conditions.

[0079] In addition, the winding radius of the fishing line wound around the spool gradually decreases as the number of rotations of the spool increases. The speed v at which the fishing line is paid out from the spool is the speed obtained by multiplying the rotational speed ω of the spool by the winding radius r of the fishing line. Therefore, when the radius r decreases by paying out the line, the change Δω in the rotational speed becomes relatively small with respect to the change Δv in the speed of the fishing line. That is, when flying far away, the necessary braking force becomes smaller than when located close by. This effect is stronger under conditions in which the amount of change in the winding radius of the fishing line becomes large when the width of the spool is narrow, when the diameter of the fishing line is large, and the like. In order to correct this effect, the brake setting value can also be changed in accordance with the rotational speed of the spool.

[0080] In addition, depending on the shape of the lure and the flying speed, the air resistance sometimes does not increase in proportion to the square of the speed of the lure. Also, since the flight trajectory of the lure is affected by the acceleration and deceleration caused by gravity, it is not necessarily optimal to decrease the brake setting value in proportion to the rotational speed of the spool as in Figure 7 . Under such conditions, as shown in (A) of Figure 10 , (B) of Figure 10 , by changing the brake setting value in a curve that is convex with respect to the rotational speed of the spool or in a curve that is concave, it is possible to adjust the relationship between the rotational speed of the spool and the braking torque. In this way, it is possible to apply an arbitrary braking torque to the lure during cruising.

[0081] As a situation in which a user changes the brake setting of the brake force control device 100 of one embodiment of the present application, there are cases in which the user spends time to find the optimal condition of the setting in order to slightly increase the casting distance, and cases in which the user wants to reduce the effort required for setting changes as much as possible in order to concentrate on fishing.

[0082] In one embodiment of the present application, since there are parameters of the conditions of the plurality of brake settings, it is sometimes difficult to set the respective values on the spooler main body. Therefore, in order to change the brake setting values of the above-described respective parameters (for example, P1 to P4 in Figure 7 ), a method in which a setting value is made by an external information device such as a smartphone and is transmitted to the control device is effective. Thereby, it is possible to independently set each setting value.

[0083] When the effort required for setting changes is desired to be reduced, it is preferable that the setting can be performed using only the fishing spool without using an external device, but in many cases, the space in which an operation unit is provided is restricted in the fishing spool main body compared to an external information device. In this case, it is effective that a part of the above-described parameters can be changed by the operation of the fishing spool. For example, in Figure 7In the example of FIG. 6, when the brake setting value B2 = B3 is set, only the value of the brake setting value B2 can be adjusted from the fishing reel. Thus, by changing the brake setting value B2, the brake setting value B3 is also changed. Therefore, the effort required for setting change can be reduced, and rough adjustment can be performed.

[0084] In the brake force control device 100 of one embodiment of the present application, the brake torque is substantially proportional to the rotational speed of the drum as described above by using the brake device that obtains the brake force by generating eddy currents in the member to be braked provided to the drum. The deceleration of the lure in the cruising is substantially proportional to the square of the speed as described above by the air resistance. Therefore, by making the brake setting value proportional to the drum speed, the brake force acting on the drum can be substantially synchronized with the air resistance acting on the lure. In addition, in the eddy current brake, the brake torque is proportional to the angular speed of the drum, so even if the brake setting value is not changed, the optimal brake torque is not largely deviated. Therefore, even if the frequency of changing the brake setting value is reduced, the optimal brake torque is not deviated, and the technical effect of reducing the calculation load can be obtained.

[0085] As the brake device in which the brake torque is substantially proportional to the rotational speed of the drum, there is a brake device that uses the viscous resistance of a fluid in addition to the eddy current brake as described above. As a method of controlling the viscous resistance of a fluid, for example, there is an MR fluid brake device that uses an MR fluid whose viscosity can be controlled by the strength of a magnetic field. Even if the MR fluid brake device is used, the same effect as one embodiment of the present application is obtained.

[0086] As other effects of the eddy current brake, there are a power saving effect and a failure protection effect. In the eddy current brake of one embodiment of the present application, the magnetic field is applied to the member to be braked by the permanent magnet. Therefore, even if the energization to the control device is cut off, the brake torque can be applied to the drum. Thus, even if the control device is abnormally stopped in the cast, the recoil of the drum can be suppressed, and the failure protection can be achieved.

[0087] In addition, since the control device energizes the motor only when the brake setting value is to be changed, the power saving can be achieved. Furthermore, since the eddy current brake is used, the drum brake torque is always proportional to the drum speed. That is, even if the rotating magnet is not moved, if the drum speed is reduced, the brake torque is also reduced. Therefore, even if the time Δt at which the brake setting value is changed is changed, the temporal change in the brake force acting on the drum is not largely changed. Therefore, the time Δt can be set to be relatively large, and the reduction in the consumption power of the motor and the suppression of the calculation load of the microcomputer can be achieved.

[0088] As described above, in the brake force control device of one embodiment of the present application, it is not necessary to calculate the acceleration of the drum. In the brake force control device of one embodiment of the present application, as described above, the rotational speed of the drum is calculated using the incremental encoder, and the brake set value is determined on the basis of the value. In addition, by differentiating the rotational speed of the drum, that is, by calculating the amount of change in the rotational speed of the drum in a predetermined time, the acceleration of the drum can also be obtained.

[0089] However, the incremental encoder becomes discrete data, and further, the processing time when various operations are performed, so the time interval in which the control device obtains the rotational speed of the drum also becomes discrete. Thus, the differentiated value of the rotational speed is easily affected by noise. If smoothing filter processing is performed in order to avoid this, a time lag is generated. That is, it is generally difficult to obtain an acceleration with little noise without a time lag, and the calculation load on the microcomputer is also large. Thus, according to the brake force control device of one embodiment of the present application, since the brake torque to the drum is determined without calculating the acceleration of the drum, it is possible to avoid an increase in the calculation load on the microcomputer.

[0090] The size, material, and arrangement of each structural element described in this specification are not limited to those explicitly described in the embodiments, and each structural element can be changed to have any size, material, and arrangement that can be included in the scope of the present application. In addition, a structural element not explicitly described in this specification can be added to the described embodiments, and part of the structural elements described in each embodiment can be omitted.

Claims

1. A braking force control device having: a reel whose shaft is supported by a reel body and which is capable of winding a fishing line; a rotational speed detection section configured to detect a rotational speed of the reel; a braking section configured to generate a braking force against the reel; and a braking force control section configured to control the braking force of the braking section, characterized in that the braking force control section is configured to adjust the braking force in accordance with an elapsed time from a cast start or detection information of the rotational speed detection section, wherein the braking force control section is configured to control the braking force in accordance with a brake setting value defined by time during a first time of the cast and to control the braking force in accordance with a brake setting value defined on the basis of the rotational speed of the reel during a second time of the cast, wherein the first time of the cast corresponds to an acceleration region of the cast and the second time of the cast corresponds to a cruising region of the cast, wherein the brake setting value is defined by a relationship in which a braking torque acting on the reel increases in proportion to the rotational speed of the reel and the brake setting value.

2. The braking force control device according to claim 1, wherein the brake setting value during the first time of the cast and the brake setting value during the second time of the cast are individually set or changed.

3. The braking force control device according to claim 1, wherein the braking section is configured to generate a braking force that increases in proportion to an angular speed of the reel, and the braking force control section is configured to control in a manner capable of changing a coefficient of the proportion.

4. The braking force control device according to claim 1, wherein the braking section has: an electrically conductive member provided to the reel; a magnetic force generation section provided to the reel body; and a magnetic field adjustment section configured to change a magnetic field state of the magnetic force generation section.

5. The braking force control device according to claim 4, wherein the electrically conductive member is an induction rotor, the magnetic force generation section is a permanent magnet, and the magnetic field adjustment section is an electric motor and a speed reducer.

6. The braking force control device according to claim 5, wherein the braking force control section is configured to control in a manner such that an intensity of a magnetic field acting on the electrically conductive member increases in proportion to the rotational speed of the reel.

7. The braking force control device according to claim 1, wherein the braking section has: a braking plate provided to the reel; and a magnetic viscous fluid in contact with the braking plate, and the braking force control section has a magnetic field adjustment section configured to adjust a magnetic field acting on the magnetic viscous fluid.

8. A fishing reel having the braking force control device according to claim 1. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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