Brake device for braking a spool and fishing reel having the same

Abstract

The present invention provides a braking device for braking a spool and a fishing reel having the braking device. In a braking device capable of adjusting a braking force by an electric motor, a situation where the battery runs out is dealt with without causing the enlargement of the reel. A braking device for a double-bearing reel is configured to brake a spool that is rotatably assembled to a reel body of the double-bearing reel and is capable of winding a fishing line. The braking device for the double-bearing reel includes: a braked portion that is mounted on the spool; a braking portion that applies a braking force to the braked portion; an electric motor that can drive a part of the braking portion; a speed reduction mechanism that transmits the drive of the electric motor to a part of the braking portion; and a power source that supplies power to the electric motor. When the holding torque of the electric motor is set as C and the maximum torque required to move the braking portion is set as Mmax, the reduction ratio r of the speed reduction mechanism satisfies r > Mmax / C.

Description

Technical Field

[0001] The present invention relates to a braking device, and more particularly to a braking device for a double-bearing reel that brakes a spool rotatably mounted on a reel body, and a fishing reel having such a braking device. Background Art

[0002] Conventionally, in a double-bearing reel, particularly in a baitcasting reel that attaches a hook assembly such as a bait to the front end of a fishing line and performs casting (casting), a braking device for braking the spool is provided to prevent recoil during casting (casting). In such a braking device, as in Patent Document 1, there is a braking device that automatically adjusts recoil prevention by rotating a magnet with an electric motor.

[0003] In Patent Document 1, based on signals from a sensor that detects the rotation of the spool and a signal from a timing circuit, the CPU calculates the rotational speed and rotational acceleration of the spool, and compares the rotational speed and rotational acceleration with data at regular intervals. Thus, when a difference greater than a certain value occurs, an eddy current is generated in a non-magnetic conductor to apply a brake to the spool, thereby enabling an extended flight distance of the hook assembly. In addition, in such a braking device, an intermittent gear is rotatably supported on the reel body, and the intermittent manual gear is meshed with a motor shaft gear or a magnet gear in a manner that allows for easy meshing and disengagement. Thus, even when the battery of the motor runs out, manual adjustment can be performed as desired.

[0004] Patent Document 1: Japanese Utility Model Publication No. 4-051581

[0005] However, in the braking device of Patent Document 1, in order to enable user operation, the intermittent manual gear needs to be disposed near the exterior of the reel. Therefore, there are restrictions such as the inability to dispose other components outside it, and thus there is a problem of causing the enlargement of the reel. Summary of the Invention

[0006] The present invention has been made in view of the above circumstances, and an object thereof is to cope with the situation where the battery runs out without causing the enlargement of a fishing reel in a braking device for a spool that can adjust the braking force with an electric motor. Other objects of the present invention will become clear by referring to the entire specification.

[0007] The braking device of the double-bearing fishing reel according to an embodiment of the present invention is configured to brake a spool that is rotatably assembled to the fishing reel body of the double-bearing fishing reel and is capable of winding fishing line. The braking device includes: a braked portion that is mounted on the spool; a braking portion that applies a braking force to the braked portion; a motor that can drive a part of the braking portion; a speed reduction mechanism that transmits the drive of the motor to a part of the braking portion; and a power source that supplies power to the motor. When the holding torque of the motor is set to C and the maximum torque required to move the braking portion is set to Mmax, the reduction ratio r of the speed reduction mechanism satisfies r > Mmax / C.

[0008] The braking device of the double-bearing fishing reel according to an embodiment of the present invention is further configured to include: a remaining amount detection portion that detects the remaining amount of the battery; and a control portion that controls the motor. When it is detected that the remaining amount of the battery has become less than or equal to a specified value, the control portion cuts off the power supply of the braking device after the braking portion has reached a specified state.

[0009] In the braking device of the double-bearing fishing reel according to an embodiment of the present invention, the braked portion is a conductive member, and the braking portion is a magnetic circuit having at least one rotatable magnet that applies a magnetic force to the conductive member.

[0010] In the braking device of the double-bearing fishing reel according to an embodiment of the present invention, the braking portion is a magnetic circuit having at least one rotatable magnet that applies a magnetic force to the conductive member, and the specified state refers to a state in which the rotatable magnet is held at the position when it is detected that the remaining amount of the battery has become less than or equal to a specified value.

[0011] In the braking device of the double-bearing fishing reel according to an embodiment of the present invention, the speed reduction mechanism is one or more reduction gears.

[0012] In the braking device of the double-bearing fishing reel according to an embodiment of the present invention, an operation portion that can be accessed from the outside is provided on any of the one or more reduction gears. Further, in the braking device of the double-bearing fishing reel according to an embodiment of the present invention, the operation portion is a recess.

[0013] The fishing reel according to an embodiment of the present invention is configured to include any of the above braking devices. Further, the fishing reel according to an embodiment of the present invention is configured to be provided with a tool hole that enables access to the speed reduction mechanism.

[0014] According to the above-described embodiment, when the motor is powered off, the braking device can overcome the magnetic force generated in the magnetic circuit and continue to maintain its own position. In this way, it is possible to provide a braking device that does not cause the reel to become large-sized and can cope with the situation where the battery runs out, and a fishing reel having such a braking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a view showing a fishing reel having a braking device according to an embodiment of the present invention.

[0016] Figure 2 FIG. is a view showing the structure of a braking device in a braking device or a fishing reel according to an embodiment of the present invention.

[0017] Figure 3 FIG. is a view showing the relationship between the position θ of the rotating magnet relative to the fixed magnet and the magnetic potential energy of the magnetic circuit.

[0018] Figure 4 FIG. is a view showing the relationship between the position θ of the rotating magnet relative to the fixed magnet and the magnitude F(θ) of the magnetic force acting on the rotating magnet.

[0019] REFERENCE SIGNS LIST

[0020] 1: Fishing reel; 2: Frame (reel body); 3: Spool; 4: Braked portion (braked unit); 5: Bearing; 6: Rotating magnet; 7: Fixed magnet; 8: Braking portion (braking unit); 9: Mounting plate; 10: Braking device; 11: Middle cover; 12: Motor; 13: Gear; 14: Gear; 15: Gear; 16: Reduction mechanism (reduction gear train); 17: Magnet gear; 18: Battery; 19: Control board; 20: Outer cover; 22: Operation portion (engaged portion). DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Hereinafter, embodiments of a braking force control device of the present invention and a fishing reel having such a braking force control device will be specifically described with reference to the drawings. In the plurality of drawings, the same reference numerals are assigned to common structural elements. Note that, for ease of explanation, the respective drawings are not necessarily drawn to an accurate scale.

[0022] Refer to Figures 1 to 4 , a braking device of a double-bearing reel and a fishing reel having such a braking device according to an embodiment of the present invention will be described.

[0023] First, Figure 1 FIG. is a cross-sectional view of a fishing reel 1, showing a cross-section passing through the central axis of a reduction gear train described later. In addition, for simplicity of explanation, illustration and description of a part of the known functions of the fishing reel 1 are omitted.

[0024] As Figure 1 shown, a fishing reel 1 according to an embodiment of the present invention includes a frame (reel body) 2, a spool 3, a braked portion (braked unit) 4, a bearing 5, a braking portion (braking unit) 8 including a rotating magnet 6 and a fixed magnet 7, a mounting plate 9, a middle cover 11, a motor 12, a reduction unit (reduction gear train) 16 including gears 13, 14, and 15, a magnet gear 17, a battery 18, a control board 19, and an outer cover 20. Here, a braking device according to an embodiment of the present invention has a braked portion 4 and a braking portion 8 including a rotating magnet 6 and a fixed magnet 7, but may also include portions other than these components.

[0025] The frame (reel body) 2 can be mounted on a fishing rod (not shown). Similar to conventional fishing reels, the fishing reel 1 has an operation unit (handle) (not shown), and by operating the handle by a user, the spool rotates forward to wind the fishing line. The rotation of the handle is transmitted to the spool through a transmission unit such as gears (not shown).

[0026] In addition, the fishing reel 1 has a clutch unit (not shown), and by operating the clutch unit, a user can select connection or disconnection of power transmission to the spool. In the connected state, winding can be performed using the operation unit. In the released state, the spool can rotate freely in both forward and reverse directions, so that the fishing line can be released.

[0027] In addition, the fishing reel 1 may also have a drag unit (not shown) that prevents breakage of the fishing line by idling the spool when a torque above a specified value acts, and a reverse prevention unit (not shown) that prevents reverse rotation of the handle. Moreover, an oscillation device (not shown) may be provided, and the oscillation device reciprocates the position of a guiding portion that guides the fishing line in response to rotation of the spool, thereby winding the fishing line evenly.

[0028] The spool 3 is supported so as to be rotatable relative to the reel body 2, and can wind the fishing line around the outer periphery by rotating forward. In addition, when casting bait or the like, it rotates in the reverse direction to release the wound fishing line. At this time, if the amount of fishing line released is excessive compared to the moving amount of the bait or the like, line entanglement called backlash occurs due to the excess line, which hinders normal use of the fishing reel 1. Therefore, an appropriate braking force is applied to the spool 3 by a braking device 10 described later, thereby preventing backlash.

[0029] The braked part (induction rotor) 4 is coaxially and non-rotatably fixed relative to the drum 3, so that a braking torque can be imparted to the drum 3. The braked part 4 is made of a conductor such as aluminum, copper, or iron, and is formed in a substantially cylindrical shape. In the braking device 10 according to an embodiment of the present invention, a so-called eddy current brake that imparts a braking force by eddy currents generated in the braked part 4 is used. That is, when a magnetic field is applied to the braked part 4 from the outside, eddy currents are generated in the moving braked part. Through the interaction between the eddy currents and the magnetic field, a braking torque proportional to the angular velocity of the drum 3 and the intensity of the magnetic field is generated.

[0030] In addition, Figure 1 The mounting plate 9 shown can be fixed to the frame 2. By fixing the mounting plate 9 to the frame 2, the drum 3 is axially supported so as to be rotatable. In addition, by holding the fixed magnet 7 and the rotating magnet (movable magnet) 6 using the mounting plate 9, the braking device 10 described later is constituted. In addition, by integrating the mounting plate 9, the middle cover 11, and the outer cover 20, a side plate unit can be constituted. In addition, a watertight chamber is formed by the middle cover 11 and the outer cover 20, and electrical components such as a substrate, a battery, a motor, and a sensor can be housed inside.

[0031] Next, the structure of the braking device 10 according to an embodiment of the present invention will be described. In the braking device 10 according to an embodiment of the present invention, a magnetic field is applied to the braked part through a magnetic circuit having at least one permanent magnet. In addition, the magnetic circuit is composed of two permanent magnets, and by moving the permanent magnets relative to each other, the magnetic field applied to the braked part can be adjusted.

[0032] In addition, as Figure 2 shown, a fixed magnet 7 is disposed on the inner peripheral side of the braked part (braked member) 4, and a rotating magnet 6 is disposed on the outer peripheral side of the braked part 4. The rotating magnet 6 and the fixed magnet 7 are each equally divided into N in the circumferential direction (quadruple in the example of Figure 2 ), and the N poles and S poles are alternately magnetized. Thereby, a magnetic field penetrating the braked part 4 is formed.

[0033] In Figure 2 state (a), the S pole of the fixed magnet 7 faces the N pole of the rotating magnet 6. That is, unlike poles face each other, and the intensity of the magnetic field penetrating the braked part is the maximum. This state is set as the maximum braking state. On the other hand, in Figure 2 state (b), the S pole of the fixed magnet 7 faces the S pole of the rotating magnet 6, that is, like poles face each other, and the magnetic field penetrating the braked part is the minimum. This state is set as the minimum braking state.

[0034] The rotating magnet 6 can rotate between a maximum braking state and a minimum braking state. Specifically, the rotating magnet 6 is fixed to a magnet gear (magnet holding gear) 17 made of resin or the like having a gear, and the magnet gear 17 is pivotally supported so as to be rotatable relative to the mounting plate 9 within a range of 0° to 90°. The magnet gear 17 receives rotational transmission from the electric motor 12 via a speed reduction mechanism (speed reduction gear train) 16. Thereby, the rotating magnet 6 can be rotated relative to the fixed magnet 7 by the electric motor 12. The speed reduction gear train 16 is a known speed reduction unit. In one embodiment of the present invention, it is composed of Figure 1 three two-stage gears, namely, a gear 13, a gear 14, and a gear 15 shown in the figure, but is not limited thereto, and can be set in any manner. Here, the reduction ratio of this speed reduction gear train is set to r.

[0035] Next, Figure 3 The relationship between the position θ of the rotating magnet relative to the fixed magnet and the magnetic potential energy of the magnetic circuit is shown. As shown in the figure, the magnetic potential energy of the magnetic circuit is the highest in the minimum braking state where like poles face each other, and the lowest in the maximum braking state where unlike poles face each other. It varies substantially in a Sin curve therebetween.

[0036] The braking device of a double-bearing fishing reel according to one embodiment of the present invention is configured to brake a spool that is rotatably assembled to the fishing reel body of the double-bearing fishing reel and is capable of winding fishing line. The braking device includes: a portion to be braked, which is mounted on the spool; a braking portion, which applies a braking force to the portion to be braked; an electric motor, which can drive a part of the braking portion; a speed reduction mechanism, which transmits the drive of the electric motor to a part of the braking portion; and a power source, which supplies power to the electric motor. When the holding torque of the electric motor is set to C and the maximum torque required to move the braking portion is set to Mmax, the reduction ratio r of the speed reduction mechanism satisfies r > Mmax / C.

[0037] According to the braking device of a double-bearing fishing reel according to one embodiment of the present invention, when the electric motor is powered off, the braking device can overcome the magnetic force generated in the magnetic circuit and continue to hold its own position. In this way, a braking device that can cope with the situation of battery exhaustion without causing the fishing reel to become large-sized and a fishing reel having such a braking device can be provided.

[0038] Figure 4Shows the relationship between the position θ of the rotating magnet relative to the fixed magnet and the magnitude F(θ) of the magnetic force acting on the rotating magnet. The magnetic force acting on the rotating magnet is obtained by differentiating the magnetic potential energy with respect to distance and varies approximately in a Cos curve. In the minimum braking state and the maximum braking state, the magnetic force becomes 0 respectively, and becomes the maximum magnetic force Mmax in between. The maximum braking state is a stable point, and even when a small angular change occurs, a restoring force towards this point is generated. The minimum braking state is an unstable point, and when a small angular change occurs, a magnetic force towards the stable point is generated.

[0039] In this way, when the rotating magnet is in the minimum braking state, although no magnetic force is applied to the rotating magnet, when it is impacted or vibrated from the outside and undergoes a small displacement, a magnetic force towards the maximum braking state as the stable point starts to be generated. In addition, when the rotating magnet is between the minimum braking state and the maximum braking state, a magnetic force towards the maximum braking state is generated. And when the rotating magnet is in the maximum braking state, no magnetic force is generated. When it undergoes a small displacement due to an impact or vibration from the outside, a magnetic force to return to the maximum braking state is generated.

[0040] In one embodiment of the present invention, in order to move the rotating magnet by the motor, the moving force generated by the motor for the rotating magnet needs to be greater than the magnetic force generated between the rotating magnet and the fixed magnet. That is, if the energization torque of the motor is set as T and the reduction ratio between the motor and the rotating magnet is set as r, then r > Mmax / T is required. Thus, in the motor drive, the rotating magnet can be positioned at an arbitrary position by overcoming the magnetic force.

[0041] On the other hand, in the case where the motor drive is stopped such as when the battery runs out or the power supply to the control board is cut off, due to the magnetic force between the rotating magnet and the fixed magnet, the motor receives a torque in the rotating direction via the gear. When the motor is not energized, usually a cogging torque generated due to torque unevenness acting between the rotor and the stator and a holding torque C caused by frictional torques such as those of bearings are generated.

[0042] The reduction ratio r in the present invention is set as r > Mmax / C. Thus, a holding torque of rC is generated between the rotating magnet and the fixed magnet. Figure 4 Shows the torque rC. In this way, the magnetic force F(θ) acting between the fixed magnet and the rotating magnet is less than the torque rC in the entire region. In this way, through the braking device 10 of one embodiment of the present invention and the fishing reel having this braking device, the holding torque (holding force) of the motor can be made greater than the magnetic force generated between the rotating magnet and the fixed magnet. Thus, when the power supply to the motor is stopped, the fixed magnet can also continue to hold its own position.

[0043] Here, in the fishing reel shown in Patent Document 1, in order not to move the magnet without motor control, an appropriate braking force needs to be applied. However, since this braking force is generated by friction, there are problems such as energy loss and difficulty in power saving. On the other hand, in the braking device 10 of one embodiment of the present invention and the fishing reel having this braking device, by adopting a reduction ratio of the reduction mechanism that is large enough, even without a braking mechanism based on friction such as an O-ring, a self-holding torque large enough with respect to the magnetic force can be ensured. Thereby, power saving can be achieved.

[0044] Next, a control method of the braking device 10 of one embodiment of the present invention will be described. As described above, in one embodiment of the present invention, the rotating magnet is relatively rotated with respect to the fixed magnet by the motor, whereby the braking torque applied to the spool can be adjusted to a specified amount. As needed, by detecting the rotational movement amount and rotational speed of the spool, the braking torque corresponding to each situation is set.

[0045] A control unit is arranged in the control board, and this control unit is composed of electrical components such as a motor driver that supplies current to the motor and a microcomputer equipped with a program for determining the driving amount of the motor. The positioning of the motor can use known methods such as feedforward control using a stepping motor and feedback control using a position sensor. Thereby, the rotating magnet can be moved to a specified position, and a specified braking force can be imparted to the spool.

[0046] The braking device of the double-bearing reel of one embodiment of the present invention is further configured to include: a remaining amount detection unit that detects the remaining amount of the battery; and a control unit that controls the motor, and when it is detected that the remaining amount of the battery becomes below a specified value, this control unit cuts off the power supply of the braking device after the braking unit becomes a specified state.

[0047] In the braking device of the double-bearing reel of one embodiment of the present invention, the braked part is a conductive member, and the braking part is a magnetic circuit having at least one rotatable magnet that imparts a magnetic force to this conductive member.

[0048] In the braking device of the double-bearing reel of one embodiment of the present invention, the braking part is a magnetic circuit having at least one rotatable magnet that imparts a magnetic force to this conductive member, and the specified state means a state of being held at the position of the rotatable magnet when it is detected that the remaining amount of the battery becomes below a specified value.

[0049] In the braking device of the double-bearing reel of one embodiment of the present invention, the reduction mechanism is one or more reduction gears.

[0050] In the braking device of the double-bearing fishing reel according to an embodiment of the present invention, an operation part that can be accessed from the outside is provided on any one of the one or more reduction gears. Further, in the braking device of the double-bearing fishing reel according to an embodiment of the present invention, the operation part is a concave part. Thus, even when the battery runs out, by inserting a tool (such as a flat-head screwdriver) through a tool hole provided in the fishing reel (such as a frame, etc.) and engaging it with the operation part (such as a concave part) of the reduction mechanism, the rotary magnet connected to the reduction mechanism can be moved to an appropriate position.

[0051] The fishing reel according to an embodiment of the present invention is configured to have any of the above braking devices. According to the fishing reel having the braking device of the double-bearing fishing reel according to an embodiment of the present invention, when the motor is powered off, the braking device can overcome the magnetic force generated in the magnetic circuit and continue to hold its own position. Thus, a braking device that can cope with the situation of battery exhaustion without causing the fishing reel to become large-sized and a fishing reel having the braking device can be provided.

[0052] Further, the fishing reel according to an embodiment of the present invention is configured to be provided with a tool hole that enables access to the reduction mechanism. According to the fishing reel having the braking device of the double-bearing fishing reel according to an embodiment of the present invention, even when the battery runs out, by inserting a tool (such as a flat-head screwdriver) through the tool hole and engaging it with the operation part (such as a concave part) of the reduction mechanism, the rotary magnet connected to the reduction mechanism can be moved to an appropriate position.

[0053] In a state where the battery remaining amount is sufficient, the motor is driven during casting (casting), and the position of the rotary magnet is appropriately adjusted, whereby an appropriate braking force corresponding to the timing can be applied. Thus, an increase in the casting distance and suppression of recoil can be achieved. In the control part of the braking device 10 according to an embodiment of the present invention, there is a battery remaining amount detection part (battery remaining amount detection unit) that detects the remaining amount of the battery, and when the battery remaining amount becomes less than or equal to a specified value, the power supply of the control device can be cut off after moving the rotary magnet to a specified position.

[0054] Thus, in a state where the battery remaining amount is insufficient, the rotary magnet can be moved to a specified position before the power supply is cut off. The position of the rotary magnet at this time can be the maximum braking state or near it. Thus, although the casting distance is reduced, the risk of recoil occurrence can be reduced. Thus, even when there is no battery remaining amount, the user can continue fishing. Further, the position of the rotary magnet before the power supply is cut off can also be input by the user.

[0055] The remaining amount detection unit for detecting the remaining amount of the battery may, for example, be a method of detecting the remaining charge of the battery based on the voltage drop of the battery. In this case, a structure for directly reading the potential difference of the battery and a structure for reading the potential difference of a shunt resistor provided in the circuit are considered. In addition, there are a Coulomb counting method for measuring the power consumption from full charge by accumulating the current used, a battery cell modeling method for correcting the temporal change and environmental change of the Coulomb counting method through learning, an impedance tracking method for always recording the impedance of the battery, etc., but it is not limited to a specific method.

[0056] In addition, in a fishing reel according to an embodiment of the present invention, a tool hole (not shown) is provided so as to be able to contact a reduction gear (for example, gear 13) constituting a reduction mechanism, and as Figure 2 shown, an operation portion (engaging portion) 22 that can be operated by a tool, such as a recess, is provided on a part of the reduction gear (for example, gear 13) constituting the reduction mechanism. Thus, the user can operate the positions of the reduction gear and the movable magnet. Here, the tool hole can be provided at any position in the force transmission path between the motor 12 and the rotary magnet 6, that is, in the reduction mechanism 16, the magnet gear 17, or the rotary magnet 6. At this time, if the gear 13, the magnet gear 17, the rotary magnet 6, etc. are arranged on the side far from the motor, it is easy to arrange the tool hole outside the watertight chamber, which is beneficial for waterproofing.

[0057] More specifically, a tool such as a flat-blade screwdriver is inserted through the tool hole, and the flat-blade screwdriver is engaged with an operation portion (for example, a recess) provided on a part of the reduction gear. Thus, if the reduction gear is rotated, the movable magnet can be rotated. In addition, the shape and structure of the operation portion can be considered in various shapes and structures and are not limited to a specific manner. Thus, even after the battery is exhausted, the braking torque applied to the spool can be adjusted. The reduction gear provided with the operation portion 22 can be Figure 1 any of the gears shown, but it is preferably provided on the final reduction gear of the reduction mechanism that transmits power to the movable magnet ( Figure 1 gear 13 in). Thus, a tool hole that can contact the operation portion can be provided at a place that can be easily accessed in the state where the side plate unit is removed.

[0058] In addition, at this time, a scale indicating the position of the movable magnet can be provided. Thus, the user knows the reference of the braking force on the spool, and the operability of the adjustment operation is further improved. According to a braking device 10 and a fishing reel having the braking device according to an embodiment of the present invention, it is possible to relatively freely achieve the adjustment of the braking force on the spool even when the battery is exhausted without being restricted by the layout. In this way, a braking device and a fishing reel having the braking device that avoid the enlargement and high cost of the entire device can be formed.

[0059] The dimensions, materials, and arrangements of the respective structural elements described in this specification are not limited to those explicitly described in the embodiments, and each of these structural elements can be deformed into any dimensions, materials, and arrangements that can be included within the scope of the present invention. Additionally, structural elements not explicitly described in this specification can be added to the described embodiments, or a part of the structural elements described in each embodiment can be omitted.

Claims

1. A braking device, which is a braking device for a double-bearing fishing reel, and brakes a spool that is rotatably assembled on the main body of the double-bearing fishing reel and can wind fishing line. It is characterized in that this braking device has: a braked part, which is mounted on this spool; a braking part, which applies a braking force to this braked part; a motor, which can drive a part of this braking part; a speed reduction mechanism, which transmits the drive of this motor to a part of this braking part; and a power source, which supplies power to this motor. When the holding torque of this motor is set as C and the maximum torque required to move this braking part is set as Mmax, the reduction ratio r of this speed reduction mechanism satisfies r > Mmax / C. By satisfying such a ratio of r > Mmax / C, when this motor is powered off, this braking device can overcome the magnetic force generated in the magnetic circuit and continue to maintain its own position. This braking device also has: a remaining amount detection part, which detects the remaining amount of the battery; and a control part, which controls this motor. When it is detected that the remaining amount of the battery becomes below a specified value, this control part cuts off the power supply of this braking device after this braking part becomes a specified state. This braked part is a conductive component.

2. The braking device according to claim 1, wherein this braking part is a magnetic circuit having at least one rotatable magnet, and this magnet applies a magnetic force to this conductive component.

3. The braking device according to claim 1, wherein this braking part is a magnetic circuit having at least one rotatable magnet, and this magnet applies a magnetic force to this conductive component. This specified state means a state of being held at the position of this rotatable magnet when it is detected that the remaining amount of the battery becomes below a specified value.

4. The braking device according to claim 1, wherein this speed reduction mechanism is one or more reduction gears.

5. The braking device according to claim 4, wherein an operation part that can be accessed from the outside is provided on any of the one or more reduction gears.

6. The braking device according to claim 5, wherein this operation part is a concave part.

7. A fishing reel having the braking device according to any one of claims 1 to 6.

8. The fishing reel according to claim 7, wherein a tool hole that can enable access to this speed reduction mechanism is provided on this fishing reel.

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